scsi_pt.c File Reference

#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/types.h>
#include <sys/bio.h>
#include <sys/devicestat.h>
#include <sys/malloc.h>
#include <sys/conf.h>
#include <sys/ptio.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_periph.h>
#include <cam/cam_xpt_periph.h>
#include <cam/cam_debug.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
#include <cam/scsi/scsi_pt.h>
#include "opt_pt.h"

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Data Structures
struct	pt_softc

Macros
#define	ccb_state   ppriv_field0
#define	ccb_bp   ppriv_ptr1
#define	SCSI_PT_DEFAULT_TIMEOUT   60

Enumerations
enum	pt_state { PT_STATE_PROBE , PT_STATE_NORMAL }
enum	pt_flags { PT_FLAG_NONE = 0x00 , PT_FLAG_OPEN = 0x01 , PT_FLAG_DEVICE_INVALID = 0x02 , PT_FLAG_RETRY_UA = 0x04 }
enum	pt_ccb_state { PT_CCB_BUFFER_IO = 0x01 , PT_CCB_RETRY_UA = 0x04 , PT_CCB_BUFFER_IO_UA = PT_CCB_BUFFER_IO|PT_CCB_RETRY_UA }

Functions
	__FBSDID ("$FreeBSD$")
static void	ptasync (void *callback_arg, u_int32_t code, struct cam_path *path, void *arg)
static void	ptdone (struct cam_periph *periph, union ccb *done_ccb)
static int	pterror (union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
void	scsi_send_receive (struct ccb_scsiio *csio, u_int32_t retries, void(*cbfcnp)(struct cam_periph *, union ccb *), u_int tag_action, int readop, u_int byte2, u_int32_t xfer_len, u_int8_t *data_ptr, u_int8_t sense_len, u_int32_t timeout)
	PERIPHDRIVER_DECLARE (pt, ptdriver)
static int	ptopen (struct cdev *dev, int flags, int fmt, struct thread *td)
static int	ptclose (struct cdev *dev, int flag, int fmt, struct thread *td)
static void	ptstrategy (struct bio *bp)
static cam_status	ptctor (struct cam_periph *periph, void *arg)
static void	ptoninvalidate (struct cam_periph *periph)
static void	ptdtor (struct cam_periph *periph)
static void	ptstart (struct cam_periph *periph, union ccb *start_ccb)
static int	ptioctl (struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td)

Variables
static d_open_t	ptopen
static d_close_t	ptclose
static d_strategy_t	ptstrategy
static periph_init_t	ptinit
static periph_ctor_t	ptctor
static periph_oninv_t	ptoninvalidate
static periph_dtor_t	ptdtor
static periph_start_t	ptstart
static d_ioctl_t	ptioctl
static struct periph_driver	ptdriver
static struct cdevsw	pt_cdevsw

Macro Definition Documentation

ccb_bp

#define ccb_bp   ppriv_ptr1

Definition at line 77 of file scsi_pt.c.

ccb_state

#define ccb_state   ppriv_field0

Definition at line 76 of file scsi_pt.c.

SCSI_PT_DEFAULT_TIMEOUT

#define SCSI_PT_DEFAULT_TIMEOUT   60

Definition at line 132 of file scsi_pt.c.

Enumeration Type Documentation

pt_ccb_state

enum pt_ccb_state

Enumerator
PT_CCB_BUFFER_IO
PT_CCB_RETRY_UA
PT_CCB_BUFFER_IO_UA

Definition at line 69 of file scsi_pt.c.

pt_flags

enum pt_flags

Enumerator
PT_FLAG_NONE
PT_FLAG_OPEN
PT_FLAG_DEVICE_INVALID
PT_FLAG_RETRY_UA

Definition at line 62 of file scsi_pt.c.

pt_state

enum pt_state

Enumerator
PT_STATE_PROBE
PT_STATE_NORMAL

Definition at line 57 of file scsi_pt.c.

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

PERIPHDRIVER_DECLARE()

PERIPHDRIVER_DECLARE	(	pt	,
		ptdriver
	)

ptasync()

static void ptasync ( void *  callback_arg, u_int32_t  code, struct cam_path *  path, void *  arg  )

static

Definition at line 359 of file scsi_pt.c.

References AC_BUS_RESET, AC_FOUND_DEVICE, AC_SENT_BDR, cam_periph_alloc(), cam_periph_async(), CAM_PERIPH_BIO, CAM_REQ_CMP, CAM_REQ_INPROG, ccb_getdev::inq_data, PROTO_SCSI, ccb_getdev::protocol, PT_CCB_RETRY_UA, PT_FLAG_RETRY_UA, ptasync(), ptctor, ptdtor, ptoninvalidate, ptstart, SID_QUAL, SID_QUAL_LU_CONNECTED, SID_TYPE, cam_periph::softc, and T_PROCESSOR.

Referenced by ptasync(), ptctor(), and ptoninvalidate().

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ptclose()

static int ptclose ( struct cdev *  dev, int  flag, int  fmt, struct thread *  td  )

static

Definition at line 170 of file scsi_pt.c.

References cam_periph_lock, cam_periph_release_locked(), cam_periph_unlock, and cam_periph::softc.

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ptctor()

static cam_status ptctor ( struct cam_periph *  periph, void *  arg  )

static

Definition at line 247 of file scsi_pt.c.

References AC_BUS_RESET, AC_LOST_DEVICE, AC_SENT_BDR, pt_softc::bio_queue, cam_periph_lock, cam_periph_unlock, CAM_REQ_CMP, CAM_REQ_CMP_ERR, pt_softc::device_stats, ccb_getdev::inq_data, cam_periph::path, cam_periph::periph_name, pt_cdevsw, PT_STATE_NORMAL, ptasync(), SCSI_PT_DEFAULT_TIMEOUT, SID_TYPE, cam_periph::softc, ccb_pathinq::transport, cam_periph::unit_number, XPORT_DEVSTAT_TYPE, xpt_announce_periph(), xpt_path_inq(), and xpt_register_async().

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ptdone()

static void ptdone ( struct cam_periph *  periph, union ccb *  done_ccb  )

static

Definition at line 473 of file scsi_pt.c.

References pt_softc::bio_queue, CAM_DEBUG, CAM_DEBUG_TRACE, CAM_DEV_QFRZN, cam_release_devq(), CAM_REQ_CMP, CAM_RETRY_SELTO, CAM_STATUS_MASK, ccb_scsiio::ccb_h, ccb::ccb_h, ccb::csio, pt_softc::device_stats, ccb_hdr::path, cam_periph::path, PT_CCB_BUFFER_IO, PT_CCB_BUFFER_IO_UA, PT_CCB_RETRY_UA, PT_FLAG_DEVICE_INVALID, pterror(), ccb_scsiio::resid, SF_RETRY_UA, cam_periph::softc, ccb_hdr::status, xpt_print(), and xpt_release_ccb().

Referenced by ptstart().

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ptdtor()

static void ptdtor ( struct cam_periph *  periph )

static

Definition at line 345 of file scsi_pt.c.

References cam_periph_lock, cam_periph_unlock, pt_softc::device_stats, and cam_periph::softc.

pterror()

static int pterror ( union ccb *  ccb, u_int32_t  cam_flags, u_int32_t  sense_flags  )

static

Definition at line 561 of file scsi_pt.c.

References cam_periph_error().

Referenced by ptdone(), and ptioctl().

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ptioctl()

static int ptioctl ( struct cdev *  dev, u_long  cmd, caddr_t  addr, int  flag, struct thread *  td  )

static

Definition at line 568 of file scsi_pt.c.

References cam_periph_ioctl(), cam_periph_lock, cam_periph_unlock, pterror(), and cam_periph::softc.

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ptoninvalidate()

static void ptoninvalidate ( struct cam_periph *  periph )

static

Definition at line 323 of file scsi_pt.c.

References pt_softc::bio_queue, cam_periph::path, PT_FLAG_DEVICE_INVALID, ptasync(), cam_periph::softc, and xpt_register_async().

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ptopen()

static int ptopen ( struct cdev *  dev, int  flags, int  fmt, struct thread *  td  )

static

Definition at line 136 of file scsi_pt.c.

References CAM_DEBUG, CAM_DEBUG_TRACE, cam_periph_acquire(), cam_periph_lock, cam_periph_release(), cam_periph_release_locked(), cam_periph_unlock, cam_periph::path, PT_FLAG_DEVICE_INVALID, PT_FLAG_OPEN, and cam_periph::softc.

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ptstart()

static void ptstart ( struct cam_periph *  periph, union ccb *  start_ccb  )

static

Definition at line 420 of file scsi_pt.c.

References pt_softc::bio_queue, CAM_DEBUG, CAM_DEBUG_TRACE, CAM_PRIORITY_NORMAL, ccb::ccb_h, ccb::csio, pt_softc::device_stats, MSG_SIMPLE_Q_TAG, cam_periph::path, PT_CCB_BUFFER_IO_UA, ptdone(), scsi_send_receive(), cam_periph::softc, SSD_FULL_SIZE, xpt_action(), xpt_release_ccb(), and xpt_schedule().

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ptstrategy()

static void ptstrategy ( struct bio *  bp )

static

Definition at line 192 of file scsi_pt.c.

References pt_softc::bio_queue, cam_periph_lock, cam_periph_unlock, CAM_PRIORITY_NORMAL, PT_FLAG_DEVICE_INVALID, cam_periph::softc, and xpt_schedule().

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scsi_send_receive()

void scsi_send_receive	(	struct ccb_scsiio *	csio,
		u_int32_t	retries,
		void(*)(struct cam_periph *, union ccb *)	cbfcnp,
		u_int	tag_action,
		int	readop,
		u_int	byte2,
		u_int32_t	xfer_len,
		u_int8_t *	data_ptr,
		u_int8_t	sense_len,
		u_int32_t	timeout
	)

Definition at line 606 of file scsi_pt.c.

References scsi_send_receive::byte2, CAM_DIR_IN, CAM_DIR_OUT, cam_fill_csio(), cdb_t::cdb_bytes, ccb_scsiio::cdb_io, scsi_send_receive::control, scsi_send_receive::opcode, RECEIVE, scsi_ulto3b(), SEND, and scsi_send_receive::xfer_len.

Referenced by ptstart().

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Variable Documentation

pt_cdevsw

struct cdevsw pt_cdevsw

static

Initial value:

= {
        .d_version =    D_VERSION,
        .d_flags =      0,
        .d_open =       ptopen,
        .d_close =      ptclose,
        .d_read =       physread,
        .d_write =      physwrite,
        .d_ioctl =      ptioctl,
        .d_strategy =   ptstrategy,
        .d_name =       "pt",
}

Definition at line 119 of file scsi_pt.c.

Referenced by ptctor().

ptclose

d_close_t ptclose

static

Definition at line 90 of file scsi_pt.c.

ptctor

periph_ctor_t ptctor

static

Definition at line 95 of file scsi_pt.c.

Referenced by ptasync().

ptdriver

struct periph_driver ptdriver

static

Initial value:

=
{
        ptinit, "pt",
        TAILQ_HEAD_INITIALIZER(ptdriver.units),  0
}

Definition at line 111 of file scsi_pt.c.

ptdtor

periph_dtor_t ptdtor

static

Definition at line 97 of file scsi_pt.c.

Referenced by ptasync().

ptinit

static void ptinit ( void  )

static

Definition at line 92 of file scsi_pt.c.

ptioctl

d_ioctl_t ptioctl

static

Definition at line 101 of file scsi_pt.c.

ptoninvalidate

periph_oninv_t ptoninvalidate

static

Definition at line 96 of file scsi_pt.c.

Referenced by ptasync().

ptopen

d_open_t ptopen

static

Definition at line 89 of file scsi_pt.c.

ptstart

periph_start_t ptstart

static

Definition at line 98 of file scsi_pt.c.

Referenced by ptasync().

ptstrategy

d_strategy_t ptstrategy

static

Definition at line 91 of file scsi_pt.c.