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freebsd-skq/sys/cam/cam.h
Kenneth D. Merry 5672fac935 Add support for reading MAM attributes to camcontrol(8) and libcam(3). 
MAM is Medium Auxiliary Memory and is most commonly found as flash
chips on tapes.

This includes support for reading attributes and decoding most
known attributes, but does not yet include support for writing
attributes or reporting attributes in XML format.

libsbuf/Makefile:
	Add subr_prf.c for the new sbuf_hexdump() function.  This
	function is essentially the same function.

libsbuf/Symbol.map:
	Add a new shared library minor version, and include the
	sbuf_hexdump() function.

libsbuf/Version.def:
	Add version 1.4 of the libsbuf library.

libutil/hexdump.3:
	Document sbuf_hexdump() alongside hexdump(3), since it is
	essentially the same function.

camcontrol/Makefile:
	Add attrib.c.

camcontrol/attrib.c:
	Implementation of READ ATTRIBUTE support for camcontrol(8).

camcontrol/camcontrol.8:
	Document the new 'camcontrol attrib' subcommand.

camcontrol/camcontrol.c:
	Add the new 'camcontrol attrib' subcommand.

camcontrol/camcontrol.h:
	Add a function prototype for scsiattrib().

share/man/man9/sbuf.9:
	Document the existence of sbuf_hexdump() and point users to
	the hexdump(3) man page for more details.

sys/cam/scsi/scsi_all.c:
	Add a table of known attributes, text descriptions and
	handler functions.

	Add a new scsi_attrib_sbuf() function along with a number
	of other related functions that help decode attributes.

	scsi_attrib_ascii_sbuf() decodes ASCII format attributes.

	scsi_attrib_int_sbuf() decodes binary format attributes, and
	will pass them off to scsi_attrib_hexdump_sbuf() if they're
	bigger than 8 bytes.

	scsi_attrib_vendser_sbuf() decodes the vendor and drive
	serial number attribute.

	scsi_attrib_volcoh_sbuf() decodes the Volume Coherency
	Information attribute that LTFS writes out.

sys/cam/scsi/scsi_all.h:
	Add a number of attribute-related structure definitions and
	other defines.

	Add function prototypes for all of the functions added in
	scsi_all.c.

sys/kern/subr_prf.c:
	Add a new function, sbuf_hexdump().  This is the same as
	the existing hexdump(9) function, except that it puts the
	result in an sbuf.

	This also changes subr_prf.c so that it can be compiled in
	userland for includsion in libsbuf.

	We should work to change this so that the kernel hexdump
	implementation is a wrapper around sbuf_hexdump() with a
	statically allocated sbuf with a drain.  That will require
	a drain function that goes to the kernel printf() buffer
	that can take a non-NUL terminated string as input.
	That is because an sbuf isn't NUL-terminated until it is
	finished, and we don't want to finish it while we're still
	using it.

	We should also work to consolidate the userland hexdump and
	kernel hexdump implemenatations, which are currently
	separate.  This would also mean making applications that
	currently link in libutil link in libsbuf.

sys/sys/sbuf.h:
	Add the prototype for sbuf_hexdump(), and add another copy
	of the hexdump flag values if they aren't already defined.

	Ideally the flags should be defined in one place but the
	implemenation makes it difficult to do properly.  (See
	above.)

Sponsored by:	Spectra Logic Corporation
MFC after:	1 week
2015-06-09 21:39:38 +00:00

414 lines
10 KiB
C
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/*-
* 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_int64_t 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 (~(u_int)0)
#define CAM_EXTLUN_BYTE_SWIZZLE(lun) ( \
((((u_int64_t)lun) & 0xffff000000000000L) >> 48) | \
((((u_int64_t)lun) & 0x0000ffff00000000L) >> 16) | \
((((u_int64_t)lun) & 0x00000000ffff0000L) << 16) | \
((((u_int64_t)lun) & 0x000000000000ffffL) << 48))
/*
* 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.
*/
typedef enum {
CAM_RL_HOST,
CAM_RL_BUS,
CAM_RL_XPT,
CAM_RL_DEV,
CAM_RL_NORMAL,
CAM_RL_VALUES
} cam_rl;
/*
* 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_HOST ((CAM_RL_HOST << 8) + 0x80)
#define CAM_PRIORITY_BUS ((CAM_RL_BUS << 8) + 0x80)
#define CAM_PRIORITY_XPT ((CAM_RL_XPT << 8) + 0x80)
#define CAM_PRIORITY_DEV ((CAM_RL_DEV << 8) + 0x80)
#define CAM_PRIORITY_OOB (CAM_RL_DEV << 8)
#define CAM_PRIORITY_NORMAL ((CAM_RL_NORMAL << 8) + 0x80)
#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
#define CAM_EXTRAQ_INDEX INT_MAX
} 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;
enum {
SF_RETRY_UA = 0x01, /* Retry UNIT ATTENTION conditions. */
SF_NO_PRINT = 0x02, /* Never print error status. */
SF_QUIET_IR = 0x04, /* Be quiet about Illegal Request reponses */
SF_PRINT_ALWAYS = 0x08, /* Always print error status. */
SF_NO_RECOVERY = 0x10, /* Don't do active error recovery. */
SF_NO_RETRY = 0x20, /* Don't do any retries. */
SF_RETRY_BUSY = 0x40 /* Retry BUSY status. */
};
/* CAM Status field values */
typedef enum {
/* CCB request is in progress */
CAM_REQ_INPROG = 0x00,
/* CCB request completed without error */
CAM_REQ_CMP = 0x01,
/* CCB request aborted by the host */
CAM_REQ_ABORTED = 0x02,
/* Unable to abort CCB request */
CAM_UA_ABORT = 0x03,
/* CCB request completed with an error */
CAM_REQ_CMP_ERR = 0x04,
/* CAM subsystem is busy */
CAM_BUSY = 0x05,
/* CCB request was invalid */
CAM_REQ_INVALID = 0x06,
/* Supplied Path ID is invalid */
CAM_PATH_INVALID = 0x07,
/* SCSI Device Not Installed/there */
CAM_DEV_NOT_THERE = 0x08,
/* Unable to terminate I/O CCB request */
CAM_UA_TERMIO = 0x09,
/* Target Selection Timeout */
CAM_SEL_TIMEOUT = 0x0a,
/* Command timeout */
CAM_CMD_TIMEOUT = 0x0b,
/* SCSI error, look at error code in CCB */
CAM_SCSI_STATUS_ERROR = 0x0c,
/* Message Reject Received */
CAM_MSG_REJECT_REC = 0x0d,
/* SCSI Bus Reset Sent/Received */
CAM_SCSI_BUS_RESET = 0x0e,
/* Uncorrectable parity error occurred */
CAM_UNCOR_PARITY = 0x0f,
/* Autosense: request sense cmd fail */
CAM_AUTOSENSE_FAIL = 0x10,
/* No HBA Detected error */
CAM_NO_HBA = 0x11,
/* Data Overrun error */
CAM_DATA_RUN_ERR = 0x12,
/* Unexpected Bus Free */
CAM_UNEXP_BUSFREE = 0x13,
/* Target Bus Phase Sequence Failure */
CAM_SEQUENCE_FAIL = 0x14,
/* CCB length supplied is inadequate */
CAM_CCB_LEN_ERR = 0x15,
/* Unable to provide requested capability*/
CAM_PROVIDE_FAIL = 0x16,
/* A SCSI BDR msg was sent to target */
CAM_BDR_SENT = 0x17,
/* CCB request terminated by the host */
CAM_REQ_TERMIO = 0x18,
/* Unrecoverable Host Bus Adapter Error */
CAM_UNREC_HBA_ERROR = 0x19,
/* Request was too large for this host */
CAM_REQ_TOO_BIG = 0x1a,
/*
* 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_REQUEUE_REQ = 0x1b,
/* ATA error, look at error code in CCB */
CAM_ATA_STATUS_ERROR = 0x1c,
/* Initiator/Target Nexus lost. */
CAM_SCSI_IT_NEXUS_LOST = 0x1d,
/* SMP error, look at error code in CCB */
CAM_SMP_STATUS_ERROR = 0x1e,
/*
* Command completed without error but exceeded the soft
* timeout threshold.
*/
CAM_REQ_SOFTTIMEOUT = 0x1f,
/*
* 0x20 - 0x32 are unassigned
*/
/* Initiator Detected Error */
CAM_IDE = 0x33,
/* Resource Unavailable */
CAM_RESRC_UNAVAIL = 0x34,
/* Unacknowledged Event by Host */
CAM_UNACKED_EVENT = 0x35,
/* Message Received in Host Target Mode */
CAM_MESSAGE_RECV = 0x36,
/* Invalid CDB received in Host Target Mode */
CAM_INVALID_CDB = 0x37,
/* Lun supplied is invalid */
CAM_LUN_INVALID = 0x38,
/* Target ID supplied is invalid */
CAM_TID_INVALID = 0x39,
/* The requested function is not available */
CAM_FUNC_NOTAVAIL = 0x3a,
/* Nexus is not established */
CAM_NO_NEXUS = 0x3b,
/* The initiator ID is invalid */
CAM_IID_INVALID = 0x3c,
/* The SCSI CDB has been received */
CAM_CDB_RECVD = 0x3d,
/* The LUN is already enabled for target mode */
CAM_LUN_ALRDY_ENA = 0x3e,
/* SCSI Bus Busy */
CAM_SCSI_BUSY = 0x3f,
/*
* Flags
*/
/* The DEV queue is frozen w/this err */
CAM_DEV_QFRZN = 0x40,
/* Autosense data valid for target */
CAM_AUTOSNS_VALID = 0x80,
/* SIM ready to take more commands */
CAM_RELEASE_SIMQ = 0x100,
/* SIM has this command in it's queue */
CAM_SIM_QUEUED = 0x200,
/* Quality of service data is valid */
CAM_QOS_VALID = 0x400,
/* Mask bits for just the status # */
CAM_STATUS_MASK = 0x3F,
/*
* Target Specific Adjunct Status
*/
/* sent sense with status */
CAM_SENT_SENSE = 0x40000000
} 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;
typedef enum {
CAM_ESMF_PRINT_NONE = 0x00,
CAM_ESMF_PRINT_STATUS = 0x10,
CAM_ESMF_PRINT_FULL_CMD = 0x20,
} cam_error_smp_flags;
typedef enum {
CAM_EAF_PRINT_NONE = 0x00,
CAM_EAF_PRINT_STATUS = 0x10,
CAM_EAF_PRINT_RESULT = 0x20
} cam_error_ata_flags;
typedef enum {
CAM_STRVIS_FLAG_NONE = 0x00,
CAM_STRVIS_FLAG_NONASCII_MASK = 0x03,
CAM_STRVIS_FLAG_NONASCII_TRIM = 0x00,
CAM_STRVIS_FLAG_NONASCII_RAW = 0x01,
CAM_STRVIS_FLAG_NONASCII_SPC = 0x02,
CAM_STRVIS_FLAG_NONASCII_ESC = 0x03
} cam_strvis_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;
#ifdef _KERNEL
extern int cam_sort_io_queues;
#endif
union ccb;
struct sbuf;
#ifdef SYSCTL_DECL /* from sysctl.h */
SYSCTL_DECL(_kern_cam);
#endif
__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);
void cam_strvis_sbuf(struct sbuf *sb, const u_int8_t *src, int srclen,
uint32_t flags);
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 */
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