Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * 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#166 $

 *

 */

#ifndef _AIC79XX_LINUX_H_

#define _AIC79XX_LINUX_H_

#include <linux/types.h>

#include <linux/blkdev.h>

#include <linux/delay.h>

#include <linux/ioport.h>

#include <linux/pci.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 ahd

/* 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"

#include "aiclib.h"

/*********************************** Debugging ********************************/

#ifdef CONFIG_AIC79XX_DEBUG_ENABLE

#ifdef CONFIG_AIC79XX_DEBUG_MASK

#define AHD_DEBUG 1

#define AHD_DEBUG_OPTS CONFIG_AIC79XX_DEBUG_MASK

#else

/*

 * Compile in debugging code, but do not enable any printfs.

 */

#define AHD_DEBUG 1

#define AHD_DEBUG_OPTS 0

#endif

/* No debugging code. */

#endif

/********************************** Misc Macros *******************************/

#define powerof2(x)     ((((x)-1)&(x))==0)

/************************* Forward Declarations *******************************/

struct ahd_softc;

typedef struct pci_dev *ahd_dev_softc_t;

typedef struct 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)

/************************* Configuration Data *********************************/

extern uint32_t aic79xx_allow_memio;

extern struct scsi_host_template aic79xx_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 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;

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     ahd_dma_tag_create(struct ahd_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    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)

/************************** Timer DataStructures ******************************/

typedef struct timer_list ahd_timer_t;

/********************************** Includes **********************************/

#ifdef CONFIG_AIC79XX_REG_PRETTY_PRINT

#define AIC_DEBUG_REGISTERS 1

#else

#define AIC_DEBUG_REGISTERS 0

#endif

#include "aic79xx.h"

/***************************** Timer Facilities *******************************/

#define ahd_timer_init init_timer

#define ahd_timer_stop del_timer_sync

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);

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);

}

/***************************** SMP support ************************************/

#include <linux/spinlock.h>

#define AIC79XX_DRIVER_VERSION "3.0"

/*************************** 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 persistent

 * after a successfully completed inquiry command to the target when

 * that inquiry data indicates a lun is present.

 */

typedef enum {

        AHD_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */

        AHD_DEV_Q_BASIC          = 0x10, /* Allow basic device queuing */

        AHD_DEV_Q_TAGGED         = 0x20, /* Allow full SCSI2 command queueing */

        AHD_DEV_PERIODIC_OTAG    = 0x40, /* Send OTAG to prevent starvation */

} ahd_linux_dev_flags;

struct ahd_linux_device {

        TAILQ_ENTRY(ahd_linux_device) links;

        /*

         * 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 AHD_TAG_SUCCESS_INTERVAL 50

        ahd_linux_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 AHD_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 AHD_DEV_PERIODIC_OTAG flag is set

         * on this device.

         */

        u_int                   commands_since_idle_or_otag;

#define AHD_OTAG_THRESH 500

};

/********************* 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 AHD_NSEG 128

/*

 * Per-SCB OSM storage.

 */

struct scb_platform_data {

        struct ahd_linux_device *dev;

        dma_addr_t               buf_busaddr;

        uint32_t                 xfer_len;

        uint32_t                 sense_resid;   /* Auto-Sense residual */

};

/*

 * 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.

 */

struct ahd_platform_data {

        /*

         * Fields accessed from interrupt context.

         */

        struct scsi_target *starget[AHD_NUM_TARGETS];

        spinlock_t               spin_lock;

        struct completion       *eh_done;

        struct Scsi_Host        *host;          /* pointer to scsi host */

#define AHD_LINUX_NOIRQ ((uint32_t)~0)

        uint32_t                 irq;           /* IRQ for this adapter */

        uint32_t                 bios_address;

        uint32_t                 mem_busaddr;   /* Mem Base Addr */

};

/************************** 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 ahd_delay(long);

static __inline void

ahd_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 **********************************/

static __inline uint8_t ahd_inb(struct ahd_softc * ahd, long port);

static __inline uint16_t ahd_inw_atomic(struct ahd_softc * ahd, long port);

static __inline void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val);

static __inline void ahd_outw_atomic(struct ahd_softc * ahd,

                                     long port, uint16_t val);

static __inline void ahd_outsb(struct ahd_softc * ahd, long port,

                               uint8_t *, int count);

static __inline void ahd_insb(struct ahd_softc * ahd, long port,

                               uint8_t *, int count);

static __inline uint8_t

ahd_inb(struct ahd_softc * ahd, long port)

{

        uint8_t x;

        if (ahd->tags[0] == BUS_SPACE_MEMIO) {

                x = readb(ahd->bshs[0].maddr + port);

        } else {

                x = inb(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF));

        }

        mb();

        return (x);

}

static __inline uint16_t

ahd_inw_atomic(struct ahd_softc * ahd, long port)

{

        uint8_t x;

        if (ahd->tags[0] == BUS_SPACE_MEMIO) {

                x = readw(ahd->bshs[0].maddr + port);

        } else {

                x = inw(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF));

        }

        mb();

        return (x);

}

static __inline void

ahd_outb(struct ahd_softc * ahd, long port, uint8_t val)

{

        if (ahd->tags[0] == BUS_SPACE_MEMIO) {

                writeb(val, ahd->bshs[0].maddr + port);

        } else {

                outb(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF));

        }

        mb();

}

static __inline void

ahd_outw_atomic(struct ahd_softc * ahd, long port, uint16_t val)

{

        if (ahd->tags[0] == BUS_SPACE_MEMIO) {

                writew(val, ahd->bshs[0].maddr + port);

        } else {

                outw(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF));

        }

        mb();

}

static __inline void

ahd_outsb(struct ahd_softc * ahd, 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++)

                ahd_outb(ahd, port, *array++);

}

static __inline void

ahd_insb(struct ahd_softc * ahd, 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++ = ahd_inb(ahd, port);

}

/**************************** Initialization **********************************/

int             ahd_linux_register_host(struct ahd_softc *,

                                        struct scsi_host_template *);

/*************************** Pretty Printing **********************************/

struct info_str {

        char *buffer;

        int length;

        off_t offset;

        int pos;

};

/******************************** Locking *************************************/

static __inline void

ahd_lockinit(struct ahd_softc *ahd)

{

        spin_lock_init(&ahd->platform_data->spin_lock);

}

static __inline void

ahd_lock(struct ahd_softc *ahd, unsigned long *flags)

{

        spin_lock_irqsave(&ahd->platform_data->spin_lock, *flags);

}

static __inline void

ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)

{

        spin_unlock_irqrestore(&ahd->platform_data->spin_lock, *flags);

}

/******************************* 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 PCIM_CMD_SERRESPEN      0x0100

#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

/****************************** PCI-X definitions *****************************/

#define PCIXR_COMMAND   0x96

#define PCIXR_DEVADDR   0x98

#define PCIXM_DEVADDR_FNUM      0x0003  /* Function Number */

#define PCIXM_DEVADDR_DNUM      0x00F8  /* Device Number */

#define PCIXM_DEVADDR_BNUM      0xFF00  /* Bus Number */

#define PCIXR_STATUS    0x9A

#define PCIXM_STATUS_64BIT      0x0001  /* Active 64bit connection to device. */

#define PCIXM_STATUS_133CAP     0x0002  /* Device is 133MHz capable */

#define PCIXM_STATUS_SCDISC     0x0004  /* Split Completion Discarded */

#define PCIXM_STATUS_UNEXPSC    0x0008  /* Unexpected Split Completion */

#define PCIXM_STATUS_CMPLEXDEV  0x0010  /* Device Complexity (set == bridge) */

#define PCIXM_STATUS_MAXMRDBC   0x0060  /* Maximum Burst Read Count */

#define PCIXM_STATUS_MAXSPLITS  0x0380  /* Maximum Split Transactions */

#define PCIXM_STATUS_MAXCRDS    0x1C00  /* Maximum Cumulative Read Size */

#define PCIXM_STATUS_RCVDSCEM   0x2000  /* Received a Split Comp w/Error msg */

typedef enum

{

        AHD_POWER_STATE_D0,

        AHD_POWER_STATE_D1,

        AHD_POWER_STATE_D2,

        AHD_POWER_STATE_D3

} ahd_power_state;

void ahd_power_state_change(struct ahd_softc *ahd,

                            ahd_power_state new_state);

/******************************* PCI Routines *********************************/

int                      ahd_linux_pci_init(void);

void                     ahd_linux_pci_exit(void);

int                      ahd_pci_map_registers(struct ahd_softc *ahd);

int                      ahd_pci_map_int(struct ahd_softc *ahd);

static __inline uint32_t ahd_pci_read_config(ahd_dev_softc_t pci,

                                             int reg, int width);

static __inline uint32_t

ahd_pci_read_config(ahd_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("ahd_pci_read_config: Read size too big");

                /* NOTREACHED */

                return (0);

        }

}

static __inline void ahd_pci_write_config(ahd_dev_softc_t pci,

                                          int reg, uint32_t value,

                                          int width);

static __inline void

ahd_pci_write_config(ahd_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("ahd_pci_write_config: Write size too big");

                /* NOTREACHED */

        }

}

static __inline int ahd_get_pci_function(ahd_dev_softc_t);

static __inline int

ahd_get_pci_function(ahd_dev_softc_t pci)

{

        return (PCI_FUNC(pci->devfn));

}

static __inline int ahd_get_pci_slot(ahd_dev_softc_t);

static __inline int

ahd_get_pci_slot(ahd_dev_softc_t pci)

{

        return (PCI_SLOT(pci->devfn));

}

static __inline int ahd_get_pci_bus(ahd_dev_softc_t);

static __inline int

ahd_get_pci_bus(ahd_dev_softc_t pci)

{

        return (pci->bus->number);

}

static __inline void ahd_flush_device_writes(struct ahd_softc *);

static __inline void

ahd_flush_device_writes(struct ahd_softc *ahd)

{

        /* XXX Is this sufficient for all architectures??? */

        ahd_inb(ahd, INTSTAT);

}

/**************************** Proc FS Support *********************************/

int     ahd_linux_proc_info(struct Scsi_Host *, char *, char **,

                            off_t, int, int);

/*********************** Transaction Access Wrappers **************************/

static __inline void ahd_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);

static __inline void ahd_set_transaction_status(struct scb *, uint32_t);

static __inline void ahd_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);

static __inline void ahd_set_scsi_status(struct scb *, uint32_t);

static __inline uint32_t ahd_cmd_get_transaction_status(struct scsi_cmnd *cmd);

static __inline uint32_t ahd_get_transaction_status(struct scb *);

static __inline uint32_t ahd_cmd_get_scsi_status(struct scsi_cmnd *cmd);

static __inline uint32_t ahd_get_scsi_status(struct scb *);

static __inline void ahd_set_transaction_tag(struct scb *, int, u_int);

static __inline u_long ahd_get_transfer_length(struct scb *);

static __inline int ahd_get_transfer_dir(struct scb *);

static __inline void ahd_set_residual(struct scb *, u_long);

static __inline void ahd_set_sense_residual(struct scb *scb, u_long resid);

static __inline u_long ahd_get_residual(struct scb *);

static __inline u_long ahd_get_sense_residual(struct scb *);

static __inline int ahd_perform_autosense(struct scb *);

static __inline uint32_t ahd_get_sense_bufsize(struct ahd_softc *,

                                               struct scb *);

static __inline void ahd_notify_xfer_settings_change(struct ahd_softc *,

                                                     struct ahd_devinfo *);

static __inline void ahd_platform_scb_free(struct ahd_softc *ahd,

                                           struct scb *scb);

static __inline void ahd_freeze_scb(struct scb *scb);

static __inline

void ahd_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)

{

        cmd->result &= ~(CAM_STATUS_MASK << 16);

        cmd->result |= status << 16;

}

static __inline

void ahd_set_transaction_status(struct scb *scb, uint32_t status)

{

        ahd_cmd_set_transaction_status(scb->io_ctx,status);

}

static __inline

void ahd_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)

{

        cmd->result &= ~0xFFFF;

        cmd->result |= status;

}

static __inline

void ahd_set_scsi_status(struct scb *scb, uint32_t status)

{

        ahd_cmd_set_scsi_status(scb->io_ctx, status);

}