232 lines
7.8 KiB
C
232 lines
7.8 KiB
C
/*
|
|
* Data structures and definitions for the CAM system.
|
|
*
|
|
* Copyright (c) 1997 Justin T. Gibbs.
|
|
* 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, immediately at the beginning of the file.
|
|
* 2. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _CAM_CAM_H
|
|
#define _CAM_CAM_H 1
|
|
|
|
#ifdef _KERNEL
|
|
#include <opt_cam.h>
|
|
#endif
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
typedef u_int path_id_t;
|
|
typedef u_int target_id_t;
|
|
typedef u_int lun_id_t;
|
|
|
|
#define CAM_XPT_PATH_ID ((path_id_t)~0)
|
|
#define CAM_BUS_WILDCARD ((path_id_t)~0)
|
|
#define CAM_TARGET_WILDCARD ((target_id_t)~0)
|
|
#define CAM_LUN_WILDCARD ((lun_id_t)~0)
|
|
|
|
/*
|
|
* Maximum length for a CAM CDB.
|
|
*/
|
|
#define CAM_MAX_CDBLEN 16
|
|
|
|
/*
|
|
* Definition of a CAM peripheral driver entry. Peripheral drivers instantiate
|
|
* one of these for each device they wish to communicate with and pass it into
|
|
* the xpt layer when they wish to schedule work on that device via the
|
|
* xpt_schedule API.
|
|
*/
|
|
struct cam_periph;
|
|
|
|
/*
|
|
* Priority information for a CAM structure. The generation number is
|
|
* incremented everytime a new entry is entered into the queue giving round
|
|
* robin per priority level scheduling.
|
|
*/
|
|
typedef struct {
|
|
u_int32_t priority;
|
|
#define CAM_PRIORITY_NONE (u_int32_t)-1
|
|
u_int32_t generation;
|
|
int index;
|
|
#define CAM_UNQUEUED_INDEX -1
|
|
#define CAM_ACTIVE_INDEX -2
|
|
#define CAM_DONEQ_INDEX -3
|
|
} cam_pinfo;
|
|
|
|
/*
|
|
* Macro to compare two generation numbers. It is used like this:
|
|
*
|
|
* if (GENERATIONCMP(a, >=, b))
|
|
* ...;
|
|
*
|
|
* GERERATIONCMP uses modular arithmetic to guard against wraps
|
|
* wraps in the generation number.
|
|
*/
|
|
#define GENERATIONCMP(x, op, y) ((int32_t)((x) - (y)) op 0)
|
|
|
|
/* CAM flags XXX Move to cam_periph.h ??? */
|
|
typedef enum {
|
|
CAM_FLAG_NONE = 0x00,
|
|
CAM_EXPECT_INQ_CHANGE = 0x01,
|
|
CAM_RETRY_SELTO = 0x02 /* Retry Selection Timeouts */
|
|
} cam_flags;
|
|
|
|
/* CAM Status field values */
|
|
typedef enum {
|
|
CAM_REQ_INPROG, /* CCB request is in progress */
|
|
CAM_REQ_CMP, /* CCB request completed without error */
|
|
CAM_REQ_ABORTED, /* CCB request aborted by the host */
|
|
CAM_UA_ABORT, /* Unable to abort CCB request */
|
|
CAM_REQ_CMP_ERR, /* CCB request completed with an error */
|
|
CAM_BUSY, /* CAM subsystem is busy */
|
|
CAM_REQ_INVALID, /* CCB request was invalid */
|
|
CAM_PATH_INVALID, /* Supplied Path ID is invalid */
|
|
CAM_DEV_NOT_THERE, /* SCSI Device Not Installed/there */
|
|
CAM_UA_TERMIO, /* Unable to terminate I/O CCB request */
|
|
CAM_SEL_TIMEOUT, /* Target Selection Timeout */
|
|
CAM_CMD_TIMEOUT, /* Command timeout */
|
|
CAM_SCSI_STATUS_ERROR, /* SCSI error, look at error code in CCB */
|
|
CAM_MSG_REJECT_REC, /* Message Reject Received */
|
|
CAM_SCSI_BUS_RESET, /* SCSI Bus Reset Sent/Received */
|
|
CAM_UNCOR_PARITY, /* Uncorrectable parity error occurred */
|
|
CAM_AUTOSENSE_FAIL = 0x10,/* Autosense: request sense cmd fail */
|
|
CAM_NO_HBA, /* No HBA Detected error */
|
|
CAM_DATA_RUN_ERR, /* Data Overrun error */
|
|
CAM_UNEXP_BUSFREE, /* Unexpected Bus Free */
|
|
CAM_SEQUENCE_FAIL, /* Target Bus Phase Sequence Failure */
|
|
CAM_CCB_LEN_ERR, /* CCB length supplied is inadequate */
|
|
CAM_PROVIDE_FAIL, /* Unable to provide requested capability */
|
|
CAM_BDR_SENT, /* A SCSI BDR msg was sent to target */
|
|
CAM_REQ_TERMIO, /* CCB request terminated by the host */
|
|
CAM_UNREC_HBA_ERROR, /* Unrecoverable Host Bus Adapter Error */
|
|
CAM_REQ_TOO_BIG, /* The request was too large for this host */
|
|
CAM_REQUEUE_REQ, /*
|
|
* This request should be requeued to preserve
|
|
* transaction ordering. This typically occurs
|
|
* when the SIM recognizes an error that should
|
|
* freeze the queue and must place additional
|
|
* requests for the target at the sim level
|
|
* back into the XPT queue.
|
|
*/
|
|
CAM_IDE = 0x33, /* Initiator Detected Error */
|
|
CAM_RESRC_UNAVAIL, /* Resource Unavailable */
|
|
CAM_UNACKED_EVENT, /* Unacknowledged Event by Host */
|
|
CAM_MESSAGE_RECV, /* Message Received in Host Target Mode */
|
|
CAM_INVALID_CDB, /* Invalid CDB received in Host Target Mode */
|
|
CAM_LUN_INVALID, /* Lun supplied is invalid */
|
|
CAM_TID_INVALID, /* Target ID supplied is invalid */
|
|
CAM_FUNC_NOTAVAIL, /* The requested function is not available */
|
|
CAM_NO_NEXUS, /* Nexus is not established */
|
|
CAM_IID_INVALID, /* The initiator ID is invalid */
|
|
CAM_CDB_RECVD, /* The SCSI CDB has been received */
|
|
CAM_LUN_ALRDY_ENA, /* The LUN is already enabled for target mode */
|
|
CAM_SCSI_BUSY, /* SCSI Bus Busy */
|
|
|
|
CAM_DEV_QFRZN = 0x40, /* The DEV queue is frozen w/this err */
|
|
|
|
/* Autosense data valid for target */
|
|
CAM_AUTOSNS_VALID = 0x80,
|
|
CAM_RELEASE_SIMQ = 0x100,/* SIM ready to take more commands */
|
|
CAM_SIM_QUEUED = 0x200,/* SIM has this command in it's queue */
|
|
|
|
CAM_STATUS_MASK = 0x3F, /* Mask bits for just the status # */
|
|
|
|
/* Target Specific Adjunct Status */
|
|
CAM_SENT_SENSE = 0x40000000 /* sent sense with status */
|
|
} cam_status;
|
|
|
|
typedef enum {
|
|
CAM_ESF_NONE = 0x00,
|
|
CAM_ESF_COMMAND = 0x01,
|
|
CAM_ESF_CAM_STATUS = 0x02,
|
|
CAM_ESF_PROTO_STATUS = 0x04,
|
|
CAM_ESF_ALL = 0xff
|
|
} cam_error_string_flags;
|
|
|
|
typedef enum {
|
|
CAM_EPF_NONE = 0x00,
|
|
CAM_EPF_MINIMAL = 0x01,
|
|
CAM_EPF_NORMAL = 0x02,
|
|
CAM_EPF_ALL = 0x03,
|
|
CAM_EPF_LEVEL_MASK = 0x0f
|
|
/* All bits above bit 3 are protocol-specific */
|
|
} cam_error_proto_flags;
|
|
|
|
typedef enum {
|
|
CAM_ESF_PRINT_NONE = 0x00,
|
|
CAM_ESF_PRINT_STATUS = 0x10,
|
|
CAM_ESF_PRINT_SENSE = 0x20
|
|
} cam_error_scsi_flags;
|
|
|
|
struct cam_status_entry
|
|
{
|
|
cam_status status_code;
|
|
const char *status_text;
|
|
};
|
|
|
|
extern const struct cam_status_entry cam_status_table[];
|
|
extern const int num_cam_status_entries;
|
|
union ccb;
|
|
|
|
__BEGIN_DECLS
|
|
typedef int (cam_quirkmatch_t)(caddr_t, caddr_t);
|
|
|
|
caddr_t cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries,
|
|
int entry_size, cam_quirkmatch_t *comp_func);
|
|
|
|
void cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen);
|
|
|
|
int cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len);
|
|
const struct cam_status_entry*
|
|
cam_fetch_status_entry(cam_status status);
|
|
#ifdef _KERNEL
|
|
char * cam_error_string(union ccb *ccb, char *str, int str_len,
|
|
cam_error_string_flags flags,
|
|
cam_error_proto_flags proto_flags);
|
|
void cam_error_print(union ccb *ccb, cam_error_string_flags flags,
|
|
cam_error_proto_flags proto_flags);
|
|
#else /* _KERNEL */
|
|
struct cam_device;
|
|
|
|
char * cam_error_string(struct cam_device *device, union ccb *ccb, char *str,
|
|
int str_len, cam_error_string_flags flags,
|
|
cam_error_proto_flags proto_flags);
|
|
void cam_error_print(struct cam_device *device, union ccb *ccb,
|
|
cam_error_string_flags flags,
|
|
cam_error_proto_flags proto_flags, FILE *ofile);
|
|
#endif /* _KERNEL */
|
|
__END_DECLS
|
|
|
|
#ifdef _KERNEL
|
|
static __inline void cam_init_pinfo(cam_pinfo *pinfo);
|
|
|
|
static __inline void cam_init_pinfo(cam_pinfo *pinfo)
|
|
{
|
|
pinfo->priority = CAM_PRIORITY_NONE;
|
|
pinfo->index = CAM_UNQUEUED_INDEX;
|
|
}
|
|
#endif
|
|
|
|
#endif /* _CAM_CAM_H */
|