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/*
* 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.
*
* $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7xxx_linux.h#72 $
*
* 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/aic7xxx_linux.h#72 $
*
*/
#ifndef _AIC7XXX_LINUX_H_
#define _AIC7XXX_LINUX_H_
#include <linux/types.h>
#include <linux/blk.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/version.h>
#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/config.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"
/************************* Forward Declarations *******************************/
struct ahc_softc;
typedef struct pci_dev *ahc_dev_softc_t;
typedef 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)
#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 aic7xxx_no_probe;
extern int aic7xxx_detect_complete;
extern Scsi_Host_Template* aic7xxx_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 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;
struct ahc_linux_dmamap
{
bus_addr_t bus_addr;
};
typedef struct ahc_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 ahc_dma_tag_create(struct ahc_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 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)
/************************** 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];
};
/********************************** Includes **********************************/
/* Host template and function declarations referenced by the template. */
#include "aic7xxx_linux_host.h"
/* Core driver definitions */
#include "aic7xxx.h"
/* SMP support */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,17)
#include <linux/spinlock.h>
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,93)
#include <linux/smp.h>
#endif
#define AIC7XXX_DRIVER_VERSION "6.2.4"
/**************************** Front End Queues ********************************/
/*
* Data structure used to cast the Linux struct scsi_cmnd to something
* that allows us to use the queue macros. The linux structure has
* plenty of space to hold the links fields as required by the queue
* macros, but the queue macors require them to have the correct type.
*/
struct ahc_cmd_internal {
/* Area owned by the Linux scsi layer. */
uint8_t private[offsetof(struct scsi_cmnd, SCp.Status)];
union {
STAILQ_ENTRY(ahc_cmd) ste;
LIST_ENTRY(ahc_cmd) le;
TAILQ_ENTRY(ahc_cmd) tqe;
} links;
uint32_t end;
};
struct ahc_cmd {
union {
struct ahc_cmd_internal icmd;
struct scsi_cmnd scsi_cmd;
} un;
};
#define acmd_icmd(cmd) ((cmd)->un.icmd)
#define acmd_scsi_cmd(cmd) ((cmd)->un.scsi_cmd)
#define acmd_links un.icmd.links
/*************************** Device Data Structures ***************************/
/*
* A per probed device structure used to deal with some error recovery
* scenarios that the Linux mid-layer code just doesn't know how to
* handle. The structure allocated for a device only becomes persistant
* after a successfully completed inquiry command to the target when
* that inquiry data indicates a lun is present.
*/
TAILQ_HEAD(ahc_busyq, ahc_cmd);
typedef enum {
AHC_DEV_UNCONFIGURED = 0x01,
AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
AHC_DEV_TIMER_ACTIVE = 0x04, /* Our timer is active */
AHC_DEV_ON_RUN_LIST = 0x08, /* Queued to be run later */
AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */
AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */
AHC_DEV_PERIODIC_OTAG = 0x40 /* Send OTAG to prevent starvation */
} ahc_dev_flags;
struct ahc_linux_target;
struct ahc_linux_device {
TAILQ_ENTRY(ahc_linux_device) links;
struct ahc_busyq busyq;
/*
* The number of transactions currently
* queued to the device.
*/
int active;
/*
* The currently allowed number of
* transactions that can be queued to
* the device. Must be signed for
* conversion from tagged to untagged
* mode where the device may have more
* than one outstanding active transaction.
*/
int openings;
/*
* A positive count indicates that this
* device's queue is halted.
*/
u_int qfrozen;
/*
* Cumulative command counter.
*/
u_long commands_issued;
/*
* The number of tagged transactions when
* running at our current opening level
* that have been successfully received by
* this device since the last QUEUE FULL.
*/
u_int tag_success_count;
#define AHC_TAG_SUCCESS_INTERVAL 50
ahc_dev_flags flags;
/*
* The high limit for the tags variable.
*/
u_int maxtags;
/*
* The computed number of tags outstanding
* at the time of the last QUEUE FULL event.
*/
u_int tags_on_last_queuefull;
/*
* How many times we have seen a queue full
* with the same number of tags. This is used
* to stop our adaptive queue depth algorithm
* on devices with a fixed number of tags.
*/
u_int last_queuefull_same_count;
#define AHC_LOCK_TAGS_COUNT 50
/*
* How many transactions have been queued
* without the device going idle. We use
* this statistic to determine when to issue
* an ordered tag to prevent transaction
* starvation. This statistic is only updated
* if the AHC_DEV_PERIODIC_OTAG flag is set
* on this device.
*/
u_int commands_since_idle_or_otag;
#define AHC_OTAG_THRESH 500
int lun;
struct ahc_linux_target *target;
};
struct ahc_linux_target {
struct ahc_linux_device *devices[AHC_NUM_LUNS];
int channel;
int target;
int refcount;
struct ahc_transinfo last_tinfo;
};
/********************* Definitions Required by the Core ***********************/
/*
* Number of SG segments we require. So long as the S/G segments for
* a particular transaction are allocated in a physically contiguous
* manner and are allocated below 4GB, the number of S/G segments is
* unrestricted.
*/
#define AHC_NSEG 128
/*
* Per-SCB OSM storage.
*/
struct scb_platform_data {
struct ahc_linux_device *dev;
uint32_t xfer_len;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0)
uint32_t resid; /* Transfer residual */
#endif
};
/*
* Define a structure used for each host adapter. All members are
* aligned on a boundary >= the size of the member to honor the
* alignment restrictions of the various platforms supported by
* this driver.
*/
TAILQ_HEAD(ahc_completeq, ahc_cmd);
struct ahc_platform_data {
/*
* Fields accessed from interrupt context.
*/
struct ahc_linux_target *targets[AHC_NUM_TARGETS];
TAILQ_HEAD(, ahc_linux_device) device_runq;
struct ahc_completeq completeq;
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0)
spinlock_t spin_lock;
#endif
u_int qfrozen;
struct timer_list reset_timer;
struct semaphore eh_sem;
struct Scsi_Host *host; /* pointer to scsi host */
uint32_t irq; /* IRQ for this adapter */
uint32_t bios_address;
uint32_t mem_busaddr; /* Mem Base Addr */
bus_addr_t hw_dma_mask;
};
/************************** OS Utility Wrappers *******************************/
#define printf printk
#define M_NOWAIT GFP_ATOMIC
#define M_WAITOK 0
#define malloc(size, type, flags) kmalloc(size, flags)
#define free(ptr, type) kfree(ptr)
static __inline void ahc_delay(long);
static __inline void
ahc_delay(long usec)
{
/*
* udelay on Linux can have problems for
* multi-millisecond waits. Wait at most
* 1024us per call.
*/
while (usec > 0) {
udelay(usec % 1024);
usec -= 1024;
}
}
/***************************** Low Level I/O **********************************/
#if defined(__powerpc__) || defined(__i386__) || defined(__ia64__)
#define MMAPIO
#endif
static __inline uint8_t ahc_inb(struct ahc_softc * ahc, long port);
static __inline void ahc_outb(struct ahc_softc * ahc, long port, uint8_t val);
static __inline void ahc_outsb(struct ahc_softc * ahc, long port,
uint8_t *, int count);
static __inline void ahc_insb(struct ahc_softc * ahc, long port,
uint8_t *, int count);
static __inline uint8_t
ahc_inb(struct ahc_softc * ahc, long port)
{
uint8_t x;
#ifdef MMAPIO
if (ahc->tag == BUS_SPACE_MEMIO) {
x = readb(ahc->bsh.maddr + port);
} else {
x = inb(ahc->bsh.ioport + port);
}
#else
x = inb(ahc->bsh.ioport + port);
#endif
mb();
return (x);
}
static __inline void
ahc_outb(struct ahc_softc * ahc, long port, uint8_t val)
{
#ifdef MMAPIO
if (ahc->tag == BUS_SPACE_MEMIO) {
writeb(val, ahc->bsh.maddr + port);
} else {
outb(val, ahc->bsh.ioport + port);
}
#else
outb(val, ahc->bsh.ioport + port);
#endif
mb();
}
static __inline void
ahc_outsb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
{
int i;
/*
* There is probably a more efficient way to do this on Linux
* but we don't use this for anything speed critical and this
* should work.
*/
for (i = 0; i < count; i++)
ahc_outb(ahc, port, *array++);
}
static __inline void
ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
{
int i;
/*
* There is probably a more efficient way to do this on Linux
* but we don't use this for anything speed critical and this
* should work.
*/
for (i = 0; i < count; i++)
*array++ = ahc_inb(ahc, port);
}
/**************************** Initialization **********************************/
int ahc_linux_register_host(struct ahc_softc *,
Scsi_Host_Template *);
uint64_t ahc_linux_get_memsize(void);
/*************************** Pretty Printing **********************************/
struct info_str {
char *buffer;
int length;
off_t offset;
int pos;
};
void ahc_format_transinfo(struct info_str *info,
struct ahc_transinfo *tinfo);
/******************************** Locking *************************************/
/* Lock protecting internal data structures */
static __inline void ahc_lockinit(struct ahc_softc *);
static __inline void ahc_lock(struct ahc_softc *, unsigned long *flags);
static __inline void ahc_unlock(struct ahc_softc *, unsigned long *flags);
/* Lock held during command compeletion to the upper layer */
static __inline void ahc_done_lockinit(struct ahc_softc *);
static __inline void ahc_done_lock(struct ahc_softc *, unsigned long *flags);
static __inline void ahc_done_unlock(struct ahc_softc *, unsigned long *flags);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,93)
static __inline void
ahc_lockinit(struct ahc_softc *ahc)
{
spin_lock_init(&ahc->platform_data->spin_lock);
}
static __inline void
ahc_lock(struct ahc_softc *ahc, unsigned long *flags)
{
*flags = 0;
spin_lock_irqsave(&ahc->platform_data->spin_lock, *flags);
}
static __inline void
ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
{
spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags);
}
static __inline void
ahc_done_lockinit(struct ahc_softc *ahc)
{
/* We don't own the iorequest lock, so we don't initialize it. */
}
static __inline void
ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags)
{
*flags = 0;
spin_lock_irqsave(&io_request_lock, *flags);
}
static __inline void
ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags)
{
spin_unlock_irqrestore(&io_request_lock, *flags);
}
#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0) */
ahc_lockinit(struct ahc_softc *ahc)
{
}
static __inline void
ahc_lock(struct ahc_softc *ahc, unsigned long *flags)
{
*flags = 0;
save_flags(*flags);
cli();
}
static __inline void
ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
{
restore_flags(*flags);
}
ahc_done_lockinit(struct ahc_softc *ahc)
{
}
static __inline void
ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags)
{
/*
* The done lock is always held while
* the ahc lock is held so blocking
* interrupts again would have no effect.
*/
}
static __inline void
ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags)
{
}
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0) */
/******************************* PCI Definitions ******************************/
/*
* PCIM_xxx: mask to locate subfield in register
* PCIR_xxx: config register offset
* PCIC_xxx: device class
* PCIS_xxx: device subclass
* PCIP_xxx: device programming interface
* PCIV_xxx: PCI vendor ID (only required to fixup ancient devices)
* PCID_xxx: device ID
*/
#define PCIR_DEVVENDOR 0x00
#define PCIR_VENDOR 0x00
#define PCIR_DEVICE 0x02
#define PCIR_COMMAND 0x04
#define PCIM_CMD_PORTEN 0x0001
#define PCIM_CMD_MEMEN 0x0002
#define PCIM_CMD_BUSMASTEREN 0x0004
#define PCIM_CMD_MWRICEN 0x0010
#define PCIM_CMD_PERRESPEN 0x0040
#define PCIR_STATUS 0x06
#define PCIR_REVID 0x08
#define PCIR_PROGIF 0x09
#define PCIR_SUBCLASS 0x0a
#define PCIR_CLASS 0x0b
#define PCIR_CACHELNSZ 0x0c
#define PCIR_LATTIMER 0x0d
#define PCIR_HEADERTYPE 0x0e
#define PCIM_MFDEV 0x80
#define PCIR_BIST 0x0f
#define PCIR_CAP_PTR 0x34
/* config registers for header type 0 devices */
#define PCIR_MAPS 0x10
#define PCIR_SUBVEND_0 0x2c
#define PCIR_SUBDEV_0 0x2e
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
extern struct pci_driver aic7xxx_pci_driver;
#endif
typedef enum
{
AHC_POWER_STATE_D0,
AHC_POWER_STATE_D1,
AHC_POWER_STATE_D2,
AHC_POWER_STATE_D3
} ahc_power_state;
void ahc_power_state_change(struct ahc_softc *ahc,
ahc_power_state new_state);
/**************************** VL/EISA Routines ********************************/
int aic7770_linux_probe(Scsi_Host_Template *);
int aic7770_map_registers(struct ahc_softc *ahc);
int aic7770_map_int(struct ahc_softc *ahc, u_int irq);
/******************************* PCI Routines *********************************/
/*
* We need to use the bios32.h routines if we are kernel version 2.1.92 or less.
*/
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,1,92)
#if defined(__sparc_v9__) || defined(__powerpc__)
#error "PPC and Sparc platforms are only support under 2.1.92 and above"
#endif
#include <linux/bios32.h>
#endif
int ahc_linux_pci_probe(Scsi_Host_Template *);
int ahc_pci_map_registers(struct ahc_softc *ahc);
int ahc_pci_map_int(struct ahc_softc *ahc);
static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t pci,
int reg, int width);
static __inline uint32_t
ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width)
{
switch (width) {
case 1:
{
uint8_t retval;
pci_read_config_byte(pci, reg, &retval);
return (retval);
}
case 2:
{
uint16_t retval;
pci_read_config_word(pci, reg, &retval);
return (retval);
}
case 4:
{
uint32_t retval;
pci_read_config_dword(pci, reg, &retval);
return (retval);
}
default:
panic("ahc_pci_read_config: Read size too big");
/* NOTREACHED */
return (0);
}
}
static __inline void ahc_pci_write_config(ahc_dev_softc_t pci,
int reg, uint32_t value,
int width);
static __inline void
ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width)
{
switch (width) {
case 1:
pci_write_config_byte(pci, reg, value);
break;
case 2:
pci_write_config_word(pci, reg, value);
break;
case 4:
pci_write_config_dword(pci, reg, value);
break;
default:
panic("ahc_pci_write_config: Write size too big");
/* NOTREACHED */
}
}
static __inline int ahc_get_pci_function(ahc_dev_softc_t);
static __inline int
ahc_get_pci_function(ahc_dev_softc_t pci)
{
return (PCI_FUNC(pci->devfn));
}
static __inline int ahc_get_pci_slot(ahc_dev_softc_t);
static __inline int
ahc_get_pci_slot(ahc_dev_softc_t pci)
{
return (PCI_SLOT(pci->devfn));
}
static __inline int ahc_get_pci_bus(ahc_dev_softc_t);
static __inline int
ahc_get_pci_bus(ahc_dev_softc_t pci)
{
return (pci->bus->number);
}
static __inline void ahc_flush_device_writes(struct ahc_softc *);
static __inline void
ahc_flush_device_writes(struct ahc_softc *ahc)
{
/* XXX Is this sufficient for all architectures??? */
ahc_inb(ahc, INTSTAT);
}
#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,3,0)
#define pci_map_sg(pdev, sg_list, nseg, direction) (nseg)
#define pci_unmap_sg(pdev, sg_list, nseg, direction)
#define sg_dma_address(sg) (VIRT_TO_BUS((sg)->address))
#define sg_dma_len(sg) ((sg)->length)
#define pci_map_single(pdev, buffer, bufflen, direction) \
(VIRT_TO_BUS(buffer))
#define pci_unmap_single(pdev, buffer, buflen, direction)
#endif
/*********************** Transaction Access Wrappers **************************/
static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
static __inline
void ahc_set_transaction_status(struct scb *scb, uint32_t status)
{
scb->io_ctx->result &= ~(CAM_STATUS_MASK << 16);
scb->io_ctx->result |= status << 16;
}
static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
static __inline
void ahc_set_scsi_status(struct scb *scb, uint32_t status)
{
scb->io_ctx->result &= ~0xFFFF;
scb->io_ctx->result |= status;
}
static __inline uint32_t ahc_get_transaction_status(struct scb *);
static __inline
uint32_t ahc_get_transaction_status(struct scb *scb)
{
return ((scb->io_ctx->result >> 16) & CAM_STATUS_MASK);
}
static __inline uint32_t ahc_get_scsi_status(struct scb *);
static __inline
uint32_t ahc_get_scsi_status(struct scb *scb)
{
return (scb->io_ctx->result & 0xFFFF);
}
static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
static __inline
void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type)
{
/*
* Nothing to do for linux as the incoming transaction
* has no concept of tag/non tagged, etc.
*/
}
static __inline u_long ahc_get_transfer_length(struct scb *);
static __inline
u_long ahc_get_transfer_length(struct scb *scb)
{
return (scb->platform_data->xfer_len);
}
static __inline int ahc_get_transfer_dir(struct scb *);
static __inline
int ahc_get_transfer_dir(struct scb *scb)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,40)
return (scb->io_ctx->sc_data_direction);
#else
if (scb->io_ctx->bufflen == 0)
return (CAM_DIR_NONE);
switch(scb->io_ctx->cmnd[0]) {
case 0x08: /* READ(6) */
case 0x28: /* READ(10) */
case 0xA8: /* READ(12) */
return (CAM_DIR_IN);
case 0x0A: /* WRITE(6) */
case 0x2A: /* WRITE(10) */
case 0xAA: /* WRITE(12) */
return (CAM_DIR_OUT);
default:
return (CAM_DIR_NONE);
}
#endif
}
static __inline void ahc_set_residual(struct scb *, u_long);
static __inline
void ahc_set_residual(struct scb *scb, u_long resid)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
scb->io_ctx->resid = resid;
#else
scb->platform_data->resid = resid;
#endif
}
static __inline void ahc_set_sense_residual(struct scb *, u_long);
static __inline
void ahc_set_sense_residual(struct scb *scb, u_long resid)
{
/* This can't be reported in Linux */
}
static __inline u_long ahc_get_residual(struct scb *);
static __inline
u_long ahc_get_residual(struct scb *scb)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
return (scb->io_ctx->resid);
#else
return (scb->platform_data->resid);
#endif
}
static __inline int ahc_perform_autosense(struct scb *);
static __inline
int ahc_perform_autosense(struct scb *scb)
{
/*
* We always perform autosense in Linux.
* On other platforms this is set on a
* per-transaction basis.
*/
return (1);
}
static __inline uint32_t
ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
{
return (sizeof(struct scsi_sense_data));
}
static __inline void ahc_notify_xfer_settings_change(struct ahc_softc *,
struct ahc_devinfo *);
static __inline void
ahc_notify_xfer_settings_change(struct ahc_softc *ahc,
struct ahc_devinfo *devinfo)
{
/* Nothing to do here for linux */
}
static __inline void ahc_platform_scb_free(struct ahc_softc *ahc,
struct scb *scb);
static __inline void
ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
{
ahc->flags &= ~AHC_RESOURCE_SHORTAGE;
}
int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
void ahc_platform_free(struct ahc_softc *ahc);
void ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb);
static __inline void ahc_freeze_scb(struct scb *scb);
static __inline void
ahc_freeze_scb(struct scb *scb)
{
/* Noting to do here for linux */
}
void ahc_platform_set_tags(struct ahc_softc *ahc,
struct ahc_devinfo *devinfo, ahc_queue_alg);
int ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
char channel, int lun, u_int tag,
role_t role, uint32_t status);
void ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs);
void ahc_platform_flushwork(struct ahc_softc *ahc);
int ahc_softc_comp(struct ahc_softc *, struct ahc_softc *);
void ahc_done(struct ahc_softc*, struct scb*);
void ahc_send_async(struct ahc_softc *, char channel,
u_int target, u_int lun, ac_code, void *);
void ahc_print_path(struct ahc_softc *, struct scb *);
void ahc_platform_dump_card_state(struct ahc_softc *ahc);
#ifdef CONFIG_PCI
#define AHC_PCI_CONFIG 1
#else
#define AHC_PCI_CONFIG 0
#endif
#define bootverbose aic7xxx_verbose
extern int aic7xxx_verbose;
#endif /* _AIC7XXX_LINUX_H_ */
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