aic7xxx_osm.h
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上传日期:2013-04-10
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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_osm.h#82 $
- *
- * 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_osm.h#82 $
- *
- */
- #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/pci.h>
- #include <linux/version.h>
- #ifndef AHC_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"
- /************************* 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_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 "6.2.8"
- /**************************** 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;
- /*
- * Per device timer.
- */
- struct timer_list timer;
- /*
- * 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;
- struct ahc_softc *ahc;
- };
- /********************* 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;
- bus_addr_t buf_busaddr;
- 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
- #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- struct tasklet_struct runq_tasklet;
- #endif
- u_int qfrozen;
- struct timer_list reset_timer;
- struct semaphore eh_sem;
- struct Scsi_Host *host; /* pointer to scsi host */
- #define AHC_LINUX_NOIRQ ((uint32_t)~0)
- 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);
- /* Lock held during ahc_list manipulation and ahc softc frees */
- extern spinlock_t ahc_list_spinlock;
- static __inline void ahc_list_lockinit(void);
- static __inline void ahc_list_lock(unsigned long *flags);
- static __inline void ahc_list_unlock(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);
- }
- static __inline void
- ahc_list_lockinit()
- {
- spin_lock_init(&ahc_list_spinlock);
- }
- static __inline void
- ahc_list_lock(unsigned long *flags)
- {
- *flags = 0;
- spin_lock_irqsave(&ahc_list_spinlock, *flags);
- }
- static __inline void
- ahc_list_unlock(unsigned long *flags)
- {
- spin_unlock_irqrestore(&ahc_list_spinlock, *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);
- }
- static __inline void
- 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)
- {
- }
- static __inline void
- ahc_list_lockinit()
- {
- }
- static __inline void
- ahc_list_lock(unsigned long *flags)
- {
- *flags = 0;
- save_flags(*flags);
- cli();
- }
- static __inline void
- ahc_list_unlock(unsigned long *flags)
- {
- restore_flags(*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,
- u_int port);
- 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_ */