path: root/drivers/scsi/aic7xxx/aic7xxx_osm.h

/*
 * Adaptec AIC7xxx device driver for Linux.
 *
 * Copyright (c) 1994 John Aycock
 *   The University of Calgary Department of Computer Science.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 * 
 * Copyright (c) 2000-2003 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/aic7xxx_osm.h#151 $
 *
 */
#ifndef _AIC7XXX_LINUX_H_
#define _AIC7XXX_LINUX_H_

#include <linux/config.h>
#include <linux/types.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/smp_lock.h>
#include <linux/version.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <asm/byteorder.h>
#include <asm/io.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_spi.h>

/* Core SCSI definitions */
#define AIC_LIB_PREFIX ahc

/* 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 "aiclib.h"

/*********************************** Debugging ********************************/
#ifdef CONFIG_AIC7XXX_DEBUG_ENABLE
#ifdef CONFIG_AIC7XXX_DEBUG_MASK
#define AHC_DEBUG 1
#define AHC_DEBUG_OPTS CONFIG_AIC7XXX_DEBUG_MASK
#else
/*
 * Compile in debugging code, but do not enable any printfs.
 */
#define AHC_DEBUG 1
#endif
/* No debugging code. */
#endif

/************************* Forward Declarations *******************************/
struct ahc_softc;
typedef struct pci_dev *ahc_dev_softc_t;
typedef struct scsi_cmnd      *ahc_io_ctx_t;

/******************************* Byte Order ***********************************/
#define ahc_htobe16(x)	cpu_to_be16(x)
#define ahc_htobe32(x)	cpu_to_be32(x)
#define ahc_htobe64(x)	cpu_to_be64(x)
#define ahc_htole16(x)	cpu_to_le16(x)
#define ahc_htole32(x)	cpu_to_le32(x)
#define ahc_htole64(x)	cpu_to_le64(x)

#define ahc_be16toh(x)	be16_to_cpu(x)
#define ahc_be32toh(x)	be32_to_cpu(x)
#define ahc_be64toh(x)	be64_to_cpu(x)
#define ahc_le16toh(x)	le16_to_cpu(x)
#define ahc_le32toh(x)	le32_to_cpu(x)
#define ahc_le64toh(x)	le64_to_cpu(x)

/************************* Configuration Data *********************************/
extern u_int aic7xxx_no_probe;
extern u_int aic7xxx_allow_memio;
extern int aic7xxx_detect_complete;
extern struct scsi_host_template aic7xxx_driver_template;

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

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 __iomem *maddr;
} bus_space_handle_t;

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

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

typedef dma_addr_t bus_dmamap_t;

typedef int bus_dma_filter_t(void*, dma_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	ahc_dma_tag_create(struct ahc_softc *, bus_dma_tag_t /*parent*/,
			   bus_size_t /*alignment*/, bus_size_t /*boundary*/,
			   dma_addr_t /*lowaddr*/, dma_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	ahc_dma_tag_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/);

int	ahc_dmamem_alloc(struct ahc_softc *, bus_dma_tag_t /*dmat*/,
			 void** /*vaddr*/, int /*flags*/,
			 bus_dmamap_t* /*mapp*/);

void	ahc_dmamem_free(struct ahc_softc *, bus_dma_tag_t /*dmat*/,
			void* /*vaddr*/, bus_dmamap_t /*map*/);

void	ahc_dmamap_destroy(struct ahc_softc *, bus_dma_tag_t /*tag*/,
			   bus_dmamap_t /*map*/);

int	ahc_dmamap_load(struct ahc_softc *ahc, 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	ahc_dmamap_unload(struct ahc_softc *, bus_dma_tag_t, bus_dmamap_t);

/*
 * Operations performed by ahc_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
 * ahc_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 ahc_dmamap_sync(ahc, dma_tag, dmamap, offset, len, op)

/************************** Timer DataStructures ******************************/
typedef struct timer_list ahc_timer_t;

/********************************** Includes **********************************/
#ifdef CONFIG_AIC7XXX_REG_PRETTY_PRINT
#define AIC_DEBUG_REGISTERS 1
#else
#define AIC_DEBUG_REGISTERS 0
#endif
#include "aic7xxx.h"

/***************************** Timer Facilities *******************************/
#define ahc_timer_init init_timer
#define ahc_timer_stop del_timer_sync
typedef void ahc_linux_callback_t (u_long);  
static __inline void ahc_timer_reset(ahc_timer_t *timer, int usec,
				     ahc_callback_t *func, void *arg);
static __inline void ahc_scb_timer_reset(struct scb *scb, u_int usec);

static __inline void
ahc_timer_reset(ahc_timer_t *timer, int usec, ahc_callback_t *func, void *arg)
{
	struct ahc_softc *ahc;

	ahc =