aic79xx_osm.h

这个linux源代码是很全面的~基本完整了~使用c编译的~由于时间问题我没有亲自测试~但就算用来做参考资料也是非常好的

/*
 * Adaptec AIC79xx device driver for Linux.
 *
 * Copyright (c) 2000-2001 Adaptec Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions, and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    substantially similar to the "NO WARRANTY" disclaimer below
 *    ("Disclaimer") and any redistribution must be conditioned upon
 *    including a substantially similar Disclaimer requirement for further
 *    binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 *
 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.h#35 $
 *
 */
#ifndef _AIC79XX_LINUX_H_
#define _AIC79XX_LINUX_H_

#include <linux/types.h>
#include <linux/blk.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/version.h>
#ifndef AHD_MODVERSION_FILE
#define __NO_VERSION__
#endif
#include <linux/module.h>
#include <asm/byteorder.h>

#ifndef KERNEL_VERSION
#define KERNEL_VERSION(x,y,z) (((x)<<16)+((y)<<8)+(z))
#endif

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
#include <linux/interrupt.h> /* For tasklet support. */
#include <linux/config.h>
#include <linux/slab.h>
#else
#include <linux/malloc.h>
#endif

/* Core SCSI definitions */
#include "../scsi.h"
#include "../hosts.h"

/* Name space conflict with BSD queue macros */
#ifdef LIST_HEAD
#undef LIST_HEAD
#endif

#include "cam.h"
#include "queue.h"
#include "scsi_message.h"
#include "scsi_iu.h"

/*********************************** Debugging ********************************/
#ifdef CONFIG_AIC79XX_DEBUG_ENABLE
#ifdef CONFIG_AIC79XX_DEBUG_MASK
#define AHD_DEBUG CONFIG_AIC79XX_DEBUG_MASK
#else
/*
 * Compile in debugging code, but do not enable any printfs.
 */
#define AHD_DEBUG 0
#endif
#endif

/********************************** Misc Macros *******************************/
#define	roundup(x, y)   ((((x)+((y)-1))/(y))*(y))
#define	powerof2(x)	((((x)-1)&(x))==0)

/************************* Forward Declarations *******************************/
struct ahd_softc;
typedef struct pci_dev *ahd_dev_softc_t;
typedef Scsi_Cmnd      *ahd_io_ctx_t;

/******************************* Byte Order ***********************************/
#define ahd_htobe16(x)	cpu_to_be16(x)
#define ahd_htobe32(x)	cpu_to_be32(x)
#define ahd_htobe64(x)	cpu_to_be64(x)
#define ahd_htole16(x)	cpu_to_le16(x)
#define ahd_htole32(x)	cpu_to_le32(x)
#define ahd_htole64(x)	cpu_to_le64(x)

#define ahd_be16toh(x)	be16_to_cpu(x)
#define ahd_be32toh(x)	be32_to_cpu(x)
#define ahd_be64toh(x)	be64_to_cpu(x)
#define ahd_le16toh(x)	le16_to_cpu(x)
#define ahd_le32toh(x)	le32_to_cpu(x)
#define ahd_le64toh(x)	le64_to_cpu(x)

#ifndef LITTLE_ENDIAN
#define LITTLE_ENDIAN 1234
#endif

#ifndef BIG_ENDIAN
#define BIG_ENDIAN 4321
#endif

#ifndef BYTE_ORDER
#if defined(__BIG_ENDIAN)
#define BYTE_ORDER BIG_ENDIAN
#endif
#if defined(__LITTLE_ENDIAN)
#define BYTE_ORDER LITTLE_ENDIAN
#endif
#endif /* BYTE_ORDER */

/************************* Configuration Data *********************************/
extern int aic79xx_detect_complete;
extern Scsi_Host_Template* aic79xx_driver_template;

/***************************** Bus Space/DMA **********************************/

#if LINUX_VERSION_CODE > KERNEL_VERSION(2,2,17)
typedef dma_addr_t bus_addr_t;
#else
typedef uint32_t bus_addr_t;
#endif
typedef uint32_t bus_size_t;

typedef enum {
	BUS_SPACE_MEMIO,
	BUS_SPACE_PIO
} bus_space_tag_t;

typedef union {
	u_long		  ioport;
	volatile uint8_t *maddr;
} bus_space_handle_t;

typedef struct bus_dma_segment
{
	bus_addr_t	ds_addr;
	bus_size_t	ds_len;
} bus_dma_segment_t;

struct ahd_linux_dma_tag
{
	bus_size_t	alignment;
	bus_size_t	boundary;
	bus_size_t	maxsize;
};
typedef struct ahd_linux_dma_tag* bus_dma_tag_t;

struct ahd_linux_dmamap
{
	bus_addr_t	bus_addr;
};
typedef struct ahd_linux_dmamap* bus_dmamap_t;

typedef int bus_dma_filter_t(void*, bus_addr_t);
typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int);

#define BUS_DMA_WAITOK		0x0
#define BUS_DMA_NOWAIT		0x1
#define BUS_DMA_ALLOCNOW	0x2
#define BUS_DMA_LOAD_SEGS	0x4	/*
					 * Argument is an S/G list not
					 * a single buffer.
					 */

#define BUS_SPACE_MAXADDR	0xFFFFFFFF
#define BUS_SPACE_MAXADDR_32BIT	0xFFFFFFFF
#define BUS_SPACE_MAXSIZE_32BIT	0xFFFFFFFF

int	ahd_dma_tag_create(struct ahd_softc *, bus_dma_tag_t /*parent*/,
			   bus_size_t /*alignment*/, bus_size_t /*boundary*/,
			   bus_addr_t /*lowaddr*/, bus_addr_t /*highaddr*/,
			   bus_dma_filter_t*/*filter*/, void */*filterarg*/,
			   bus_size_t /*maxsize*/, int /*nsegments*/,
			   bus_size_t /*maxsegsz*/, int /*flags*/,
			   bus_dma_tag_t */*dma_tagp*/);

void	ahd_dma_tag_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/);

int	ahd_dmamem_alloc(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
			 void** /*vaddr*/, int /*flags*/,
			 bus_dmamap_t* /*mapp*/);

void	ahd_dmamem_free(struct ahd_softc *, bus_dma_tag_t /*dmat*/,
			void* /*vaddr*/, bus_dmamap_t /*map*/);

void	ahd_dmamap_destroy(struct ahd_softc *, bus_dma_tag_t /*tag*/,
			   bus_dmamap_t /*map*/);

int	ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t /*dmat*/,
			bus_dmamap_t /*map*/, void * /*buf*/,
			bus_size_t /*buflen*/, bus_dmamap_callback_t *,
			void */*callback_arg*/, int /*flags*/);

int	ahd_dmamap_unload(struct ahd_softc *, bus_dma_tag_t, bus_dmamap_t);

/*
 * Operations performed by ahd_dmamap_sync().
 */
#define BUS_DMASYNC_PREREAD	0x01	/* pre-read synchronization */
#define BUS_DMASYNC_POSTREAD	0x02	/* post-read synchronization */
#define BUS_DMASYNC_PREWRITE	0x04	/* pre-write synchronization */
#define BUS_DMASYNC_POSTWRITE	0x08	/* post-write synchronization */

/*
 * XXX
 * ahd_dmamap_sync is only used on buffers allocated with
 * the pci_alloc_consistent() API.  Although I'm not sure how
 * this works on architectures with a write buffer, Linux does
 * not have an API to sync "coherent" memory.  Perhaps we need
 * to do an mb()?
 */
#define ahd_dmamap_sync(ahd, dma_tag, dmamap, offset, len, op)

/************************** SCSI Constants/Structures *************************/
#define SCSI_REV_2 2
#define	SCSI_STATUS_OK			0x00
#define	SCSI_STATUS_CHECK_COND		0x02
#define	SCSI_STATUS_COND_MET		0x04
#define	SCSI_STATUS_BUSY		0x08
#define SCSI_STATUS_INTERMED		0x10
#define SCSI_STATUS_INTERMED_COND_MET	0x14
#define SCSI_STATUS_RESERV_CONFLICT	0x18
#define SCSI_STATUS_CMD_TERMINATED	0x22
#define SCSI_STATUS_QUEUE_FULL		0x28

/*
 * 6 byte request sense CDB format.
 */
struct scsi_sense
{
	uint8_t opcode;
	uint8_t byte2;
	uint8_t unused[2];
	uint8_t length;
	uint8_t control;
};

struct scsi_sense_data
{
	uint8_t	error_code;
	uint8_t	segment;
	uint8_t	flags;
	uint8_t	info[4];
	uint8_t	extra_len;
	uint8_t	cmd_spec_info[4];
	uint8_t add_sense_code;
	uint8_t add_sense_code_qual;
	uint8_t	fru;
	uint8_t	sense_key_spec[3];
	uint8_t	extra_bytes[14];
};

struct scsi_inquiry
{ 
	u_int8_t opcode;
	u_int8_t byte2;
#define	SI_EVPD 0x01
	u_int8_t page_code;
	u_int8_t reserved;
	u_int8_t length;
	u_int8_t control;
};

struct scsi_inquiry_data
{
	uint8_t device;
#define	SID_TYPE(inq_data) ((inq_data)->device & 0x1f)
#define	SID_QUAL(inq_data) (((inq_data)->device & 0xE0) >> 5)
#define	SID_QUAL_LU_CONNECTED	0x00	/*
					 * The specified peripheral device
					 * type is currently connected to
					 * logical unit.  If the target cannot
					 * determine whether or not a physical
					 * device is currently connected, it
					 * shall also use this peripheral
					 * qualifier when returning the INQUIRY
					 * data.  This peripheral qualifier
					 * does not mean that the device is
					 * ready for access by the initiator.
					 */
#define	SID_QUAL_LU_OFFLINE	0x01	/*
					 * The target is capable of supporting
					 * the specified peripheral device type
					 * on this logical unit; however, the
					 * physical device is not currently
					 * connected to this logical unit.
					 */
#define SID_QUAL_RSVD		0x02
#define	SID_QUAL_BAD_LU		0x03	/*
					 * The target is not capable of
					 * supporting a physical device on
					 * this logical unit. For this
					 * peripheral qualifier the peripheral
					 * device type shall be set to 1Fh to
					 * provide compatibility with previous
					 * versions of SCSI. All other
					 * peripheral device type values are
					 * reserved for this peripheral
					 * qualifier.
					 */
#define	SID_QUAL_IS_VENDOR_UNIQUE(inq_data) ((SID_QUAL(inq_data) & 0x08) != 0)
	uint8_t dev_qual2;
#define	SID_QUAL2	0x7F
#define	SID_IS_REMOVABLE(inq_data) (((inq_data)->dev_qual2 & 0x80) != 0)
	uint8_t version;
#define SID_ANSI_REV(inq_data) ((inq_data)->version & 0x07)
#define		SCSI_REV_0		0
#define		SCSI_REV_CCS		1
#define		SCSI_REV_2		2
#define		SCSI_REV_SPC		3
#define		SCSI_REV_SPC2		4

#define SID_ECMA	0x38
#define SID_ISO		0xC0
	uint8_t response_format;
#define SID_AENC	0x80
#define SID_TrmIOP	0x40
	uint8_t additional_length;
	uint8_t reserved[2];
	uint8_t flags;
#define	SID_SftRe	0x01
#define	SID_CmdQue	0x02
#define	SID_Linked	0x08
#define	SID_Sync	0x10
#define	SID_WBus16	0x20
#define	SID_WBus32	0x40
#define	SID_RelAdr	0x80
#define SID_VENDOR_SIZE   8
	char	 vendor[SID_VENDOR_SIZE];
#define SID_PRODUCT_SIZE  16
	char	 product[SID_PRODUCT_SIZE];
#define SID_REVISION_SIZE 4
	char	 revision[SID_REVISION_SIZE];
	/*
	 * The following fields were taken from SCSI Primary Commands - 2
	 * (SPC-2) Revision 14, Dated 11 November 1999
	 */
#define	SID_VENDOR_SPECIFIC_0_SIZE	20
	u_int8_t vendor_specific0[SID_VENDOR_SPECIFIC_0_SIZE];
	/*
	 * An extension of SCSI Parallel Specific Values
	 */
#define	SID_SPI_IUS		0x01
#define	SID_SPI_QAS		0x02
#define	SID_SPI_CLOCK_ST	0x00
#define	SID_SPI_CLOCK_DT	0x04
#define	SID_SPI_CLOCK_DT_ST	0x0C
#define	SID_SPI_MASK		0x0F
	uint8_t spi3data;
	uint8_t reserved2;
	/*
	 * Version Descriptors, stored 2 byte values.
	 */
	uint8_t version1[2];
	uint8_t version2[2];
	uint8_t version3[2];
	uint8_t version4[2];
	uint8_t version5[2];
	uint8_t version6[2];
	uint8_t version7[2];
	uint8_t version8[2];

	uint8_t reserved3[22];

#define	SID_VENDOR_SPECIFIC_1_SIZE	160
	uint8_t vendor_specific1[SID_VENDOR_SPECIFIC_1_SIZE];
};

static __inline uint32_t scsi_4btoul(uint8_t *bytes);
static __inline uint32_t
scsi_4btoul(uint8_t *bytes)
{
	return ((bytes[0] << 24)|(bytes[1] << 16)|(bytes[2] << 8)|bytes[3]);
}
/************************** Timer DataStructures ******************************/
typedef struct timer_list ahd_timer_t;

/********************************** Includes **********************************/
/* Host template and function declarations referenced by the template. */
#include "aic79xx_host.h"

/* Core driver definitions */
#include "aic79xx.h"

/***************************** Timer Facilities *******************************/
#define ahd_timer_init init_timer
#define ahd_timer_stop del_timer
typedef void ahd_linux_callback_t (u_long);  
static __inline void
ahd_timer_reset(ahd_timer_t *timer, int usec, ahd_callback_t *func, void *arg)
{
	struct ahd_softc *ahd;

	ahd = (struct ahd_softc *)arg;
	del_timer(timer);
	timer->data = (u_long)arg;
	timer->expires = jiffies + (usec * HZ)/1000000;
	timer->function = (ahd_linux_callback_t*)func;
	add_timer(timer);