74e66e6c70
declarations. We typically don't use them elsewhere in the kernel, and they aren't needed here: the actual functions are a few lines away and aren't mutually recursive.
414 lines
10 KiB
C
414 lines
10 KiB
C
/*-
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* Data structures and definitions for the CAM system.
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*
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1997 Justin T. Gibbs.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _CAM_CAM_H
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#define _CAM_CAM_H 1
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#ifdef _KERNEL
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#include "opt_cam.h"
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#endif
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#include <sys/cdefs.h>
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typedef u_int path_id_t;
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typedef u_int target_id_t;
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typedef u_int64_t lun_id_t;
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#define CAM_XPT_PATH_ID ((path_id_t)~0)
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#define CAM_BUS_WILDCARD ((path_id_t)~0)
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#define CAM_TARGET_WILDCARD ((target_id_t)~0)
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#define CAM_LUN_WILDCARD (~(u_int)0)
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#define CAM_EXTLUN_BYTE_SWIZZLE(lun) ( \
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((((u_int64_t)lun) & 0xffff000000000000L) >> 48) | \
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((((u_int64_t)lun) & 0x0000ffff00000000L) >> 16) | \
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((((u_int64_t)lun) & 0x00000000ffff0000L) << 16) | \
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((((u_int64_t)lun) & 0x000000000000ffffL) << 48))
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/*
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* Maximum length for a CAM CDB.
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*/
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#define CAM_MAX_CDBLEN 16
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/*
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* Definition of a CAM peripheral driver entry. Peripheral drivers instantiate
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* one of these for each device they wish to communicate with and pass it into
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* the xpt layer when they wish to schedule work on that device via the
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* xpt_schedule API.
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*/
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struct cam_periph;
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/*
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* Priority information for a CAM structure.
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*/
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typedef enum {
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CAM_RL_HOST,
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CAM_RL_BUS,
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CAM_RL_XPT,
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CAM_RL_DEV,
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CAM_RL_NORMAL,
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CAM_RL_VALUES
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} cam_rl;
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/*
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* The generation number is incremented every time a new entry is entered into
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* the queue giving round robin per priority level scheduling.
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*/
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typedef struct {
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u_int32_t priority;
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#define CAM_PRIORITY_HOST ((CAM_RL_HOST << 8) + 0x80)
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#define CAM_PRIORITY_BUS ((CAM_RL_BUS << 8) + 0x80)
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#define CAM_PRIORITY_XPT ((CAM_RL_XPT << 8) + 0x80)
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#define CAM_PRIORITY_DEV ((CAM_RL_DEV << 8) + 0x80)
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#define CAM_PRIORITY_OOB (CAM_RL_DEV << 8)
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#define CAM_PRIORITY_NORMAL ((CAM_RL_NORMAL << 8) + 0x80)
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#define CAM_PRIORITY_NONE (u_int32_t)-1
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u_int32_t generation;
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int index;
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#define CAM_UNQUEUED_INDEX -1
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#define CAM_ACTIVE_INDEX -2
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#define CAM_DONEQ_INDEX -3
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#define CAM_EXTRAQ_INDEX INT_MAX
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} cam_pinfo;
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/*
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* Macro to compare two generation numbers. It is used like this:
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*
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* if (GENERATIONCMP(a, >=, b))
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* ...;
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*
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* GERERATIONCMP uses modular arithmetic to guard against wraps
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* wraps in the generation number.
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*/
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#define GENERATIONCMP(x, op, y) ((int32_t)((x) - (y)) op 0)
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/* CAM flags XXX Move to cam_periph.h ??? */
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typedef enum {
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CAM_FLAG_NONE = 0x00,
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CAM_EXPECT_INQ_CHANGE = 0x01,
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CAM_RETRY_SELTO = 0x02 /* Retry Selection Timeouts */
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} cam_flags;
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enum {
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SF_RETRY_UA = 0x01, /* Retry UNIT ATTENTION conditions. */
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SF_NO_PRINT = 0x02, /* Never print error status. */
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SF_QUIET_IR = 0x04, /* Be quiet about Illegal Request responses */
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SF_PRINT_ALWAYS = 0x08, /* Always print error status. */
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SF_NO_RECOVERY = 0x10, /* Don't do active error recovery. */
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SF_NO_RETRY = 0x20, /* Don't do any retries. */
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SF_RETRY_BUSY = 0x40 /* Retry BUSY status. */
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};
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/* CAM Status field values */
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typedef enum {
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/* CCB request is in progress */
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CAM_REQ_INPROG = 0x00,
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/* CCB request completed without error */
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CAM_REQ_CMP = 0x01,
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/* CCB request aborted by the host */
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CAM_REQ_ABORTED = 0x02,
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/* Unable to abort CCB request */
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CAM_UA_ABORT = 0x03,
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/* CCB request completed with an error */
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CAM_REQ_CMP_ERR = 0x04,
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/* CAM subsystem is busy */
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CAM_BUSY = 0x05,
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/* CCB request was invalid */
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CAM_REQ_INVALID = 0x06,
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/* Supplied Path ID is invalid */
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CAM_PATH_INVALID = 0x07,
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/* SCSI Device Not Installed/there */
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CAM_DEV_NOT_THERE = 0x08,
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/* Unable to terminate I/O CCB request */
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CAM_UA_TERMIO = 0x09,
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/* Target Selection Timeout */
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CAM_SEL_TIMEOUT = 0x0a,
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/* Command timeout */
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CAM_CMD_TIMEOUT = 0x0b,
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/* SCSI error, look at error code in CCB */
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CAM_SCSI_STATUS_ERROR = 0x0c,
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/* Message Reject Received */
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CAM_MSG_REJECT_REC = 0x0d,
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/* SCSI Bus Reset Sent/Received */
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CAM_SCSI_BUS_RESET = 0x0e,
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/* Uncorrectable parity error occurred */
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CAM_UNCOR_PARITY = 0x0f,
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/* Autosense: request sense cmd fail */
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CAM_AUTOSENSE_FAIL = 0x10,
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/* No HBA Detected error */
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CAM_NO_HBA = 0x11,
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/* Data Overrun error */
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CAM_DATA_RUN_ERR = 0x12,
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/* Unexpected Bus Free */
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CAM_UNEXP_BUSFREE = 0x13,
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/* Target Bus Phase Sequence Failure */
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CAM_SEQUENCE_FAIL = 0x14,
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/* CCB length supplied is inadequate */
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CAM_CCB_LEN_ERR = 0x15,
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/* Unable to provide requested capability*/
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CAM_PROVIDE_FAIL = 0x16,
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/* A SCSI BDR msg was sent to target */
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CAM_BDR_SENT = 0x17,
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/* CCB request terminated by the host */
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CAM_REQ_TERMIO = 0x18,
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/* Unrecoverable Host Bus Adapter Error */
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CAM_UNREC_HBA_ERROR = 0x19,
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/* Request was too large for this host */
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CAM_REQ_TOO_BIG = 0x1a,
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/*
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* This request should be requeued to preserve
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* transaction ordering. This typically occurs
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* when the SIM recognizes an error that should
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* freeze the queue and must place additional
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* requests for the target at the sim level
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* back into the XPT queue.
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*/
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CAM_REQUEUE_REQ = 0x1b,
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/* ATA error, look at error code in CCB */
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CAM_ATA_STATUS_ERROR = 0x1c,
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/* Initiator/Target Nexus lost. */
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CAM_SCSI_IT_NEXUS_LOST = 0x1d,
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/* SMP error, look at error code in CCB */
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CAM_SMP_STATUS_ERROR = 0x1e,
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/*
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* Command completed without error but exceeded the soft
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* timeout threshold.
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*/
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CAM_REQ_SOFTTIMEOUT = 0x1f,
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/*
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* 0x20 - 0x32 are unassigned
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*/
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/* Initiator Detected Error */
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CAM_IDE = 0x33,
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/* Resource Unavailable */
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CAM_RESRC_UNAVAIL = 0x34,
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/* Unacknowledged Event by Host */
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CAM_UNACKED_EVENT = 0x35,
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/* Message Received in Host Target Mode */
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CAM_MESSAGE_RECV = 0x36,
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/* Invalid CDB received in Host Target Mode */
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CAM_INVALID_CDB = 0x37,
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/* Lun supplied is invalid */
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CAM_LUN_INVALID = 0x38,
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/* Target ID supplied is invalid */
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CAM_TID_INVALID = 0x39,
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/* The requested function is not available */
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CAM_FUNC_NOTAVAIL = 0x3a,
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/* Nexus is not established */
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CAM_NO_NEXUS = 0x3b,
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/* The initiator ID is invalid */
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CAM_IID_INVALID = 0x3c,
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/* The SCSI CDB has been received */
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CAM_CDB_RECVD = 0x3d,
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/* The LUN is already enabled for target mode */
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CAM_LUN_ALRDY_ENA = 0x3e,
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/* SCSI Bus Busy */
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CAM_SCSI_BUSY = 0x3f,
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/*
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* Flags
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*/
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/* The DEV queue is frozen w/this err */
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CAM_DEV_QFRZN = 0x40,
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/* Autosense data valid for target */
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CAM_AUTOSNS_VALID = 0x80,
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/* SIM ready to take more commands */
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CAM_RELEASE_SIMQ = 0x100,
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/* SIM has this command in its queue */
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CAM_SIM_QUEUED = 0x200,
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/* Quality of service data is valid */
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CAM_QOS_VALID = 0x400,
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/* Mask bits for just the status # */
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CAM_STATUS_MASK = 0x3F,
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/*
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* Target Specific Adjunct Status
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*/
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/* sent sense with status */
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CAM_SENT_SENSE = 0x40000000
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} cam_status;
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typedef enum {
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CAM_ESF_NONE = 0x00,
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CAM_ESF_COMMAND = 0x01,
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CAM_ESF_CAM_STATUS = 0x02,
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CAM_ESF_PROTO_STATUS = 0x04,
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CAM_ESF_ALL = 0xff
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} cam_error_string_flags;
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typedef enum {
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CAM_EPF_NONE = 0x00,
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CAM_EPF_MINIMAL = 0x01,
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CAM_EPF_NORMAL = 0x02,
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CAM_EPF_ALL = 0x03,
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CAM_EPF_LEVEL_MASK = 0x0f
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/* All bits above bit 3 are protocol-specific */
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} cam_error_proto_flags;
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typedef enum {
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CAM_ESF_PRINT_NONE = 0x00,
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CAM_ESF_PRINT_STATUS = 0x10,
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CAM_ESF_PRINT_SENSE = 0x20
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} cam_error_scsi_flags;
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typedef enum {
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CAM_ESMF_PRINT_NONE = 0x00,
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CAM_ESMF_PRINT_STATUS = 0x10,
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CAM_ESMF_PRINT_FULL_CMD = 0x20,
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} cam_error_smp_flags;
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typedef enum {
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CAM_EAF_PRINT_NONE = 0x00,
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CAM_EAF_PRINT_STATUS = 0x10,
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CAM_EAF_PRINT_RESULT = 0x20
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} cam_error_ata_flags;
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typedef enum {
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CAM_STRVIS_FLAG_NONE = 0x00,
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CAM_STRVIS_FLAG_NONASCII_MASK = 0x03,
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CAM_STRVIS_FLAG_NONASCII_TRIM = 0x00,
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CAM_STRVIS_FLAG_NONASCII_RAW = 0x01,
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CAM_STRVIS_FLAG_NONASCII_SPC = 0x02,
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CAM_STRVIS_FLAG_NONASCII_ESC = 0x03
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} cam_strvis_flags;
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struct cam_status_entry
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{
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cam_status status_code;
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const char *status_text;
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};
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extern const struct cam_status_entry cam_status_table[];
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extern const int num_cam_status_entries;
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#ifdef _KERNEL
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extern int cam_sort_io_queues;
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#endif
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union ccb;
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struct sbuf;
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#ifdef SYSCTL_DECL /* from sysctl.h */
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SYSCTL_DECL(_kern_cam);
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#endif
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__BEGIN_DECLS
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typedef int (cam_quirkmatch_t)(caddr_t, caddr_t);
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caddr_t cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries,
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int entry_size, cam_quirkmatch_t *comp_func);
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void cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen);
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void cam_strvis_sbuf(struct sbuf *sb, const u_int8_t *src, int srclen,
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uint32_t flags);
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int cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len);
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const struct cam_status_entry*
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cam_fetch_status_entry(cam_status status);
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#ifdef _KERNEL
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char * cam_error_string(union ccb *ccb, char *str, int str_len,
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cam_error_string_flags flags,
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cam_error_proto_flags proto_flags);
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void cam_error_print(union ccb *ccb, cam_error_string_flags flags,
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cam_error_proto_flags proto_flags);
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#else /* _KERNEL */
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struct cam_device;
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char * cam_error_string(struct cam_device *device, union ccb *ccb, char *str,
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int str_len, cam_error_string_flags flags,
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cam_error_proto_flags proto_flags);
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void cam_error_print(struct cam_device *device, union ccb *ccb,
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cam_error_string_flags flags,
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cam_error_proto_flags proto_flags, FILE *ofile);
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#endif /* _KERNEL */
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__END_DECLS
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#ifdef _KERNEL
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static __inline void cam_init_pinfo(cam_pinfo *pinfo)
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{
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pinfo->priority = CAM_PRIORITY_NONE;
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pinfo->index = CAM_UNQUEUED_INDEX;
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}
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#endif
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#endif /* _CAM_CAM_H */
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