freebsd-src/sys/cam/cam.c
Mike Smith 65c382562e Define the kern.cam sysctl in the cam layer, rather than multiply in several
peripheral drivers.  Remove Ken's comment to the effect that this needed
to be done.

Staticise camnet_ih and cambio_ih.
2002-01-09 03:39:04 +00:00

361 lines
9.9 KiB
C

/*
* Generic utility routines for the Common Access Method layer.
*
* 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#ifdef _KERNEL
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#else /* _KERNEL */
#include <stdlib.h>
#include <stdio.h>
#endif /* _KERNEL */
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/scsi/scsi_all.h>
#include <sys/sbuf.h>
#ifdef _KERNEL
#include <sys/libkern.h>
#include <cam/cam_xpt.h>
#endif
static int camstatusentrycomp(const void *key, const void *member);
const struct cam_status_entry cam_status_table[] = {
{ 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 subsytem is busy" },
{ CAM_REQ_INVALID, "CCB request was invalid" },
{ CAM_PATH_INVALID, "Supplied Path ID is invalid" },
{ CAM_DEV_NOT_THERE, "Device Not Present" },
{ CAM_UA_TERMIO, "Unable to terminate I/O CCB request" },
{ CAM_SEL_TIMEOUT, "Selection Timeout" },
{ CAM_CMD_TIMEOUT, "Command timeout" },
{ CAM_SCSI_STATUS_ERROR, "SCSI Status Error" },
{ CAM_MSG_REJECT_REC, "Message Reject Reveived" },
{ CAM_SCSI_BUS_RESET, "SCSI Bus Reset Sent/Received" },
{ CAM_UNCOR_PARITY, "Uncorrectable parity/CRC error" },
{ CAM_AUTOSENSE_FAIL, "Auto-Sense Retrieval Failed" },
{ CAM_NO_HBA, "No HBA Detected" },
{ 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, "SCSI BDR Message Sent" },
{ 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, "Unconditionally Re-queue Request", },
{ CAM_IDE, "Initiator Detected Error Message Received" },
{ 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, "Invalid Lun" },
{ CAM_TID_INVALID, "Invalid Target ID" },
{ CAM_FUNC_NOTAVAIL, "Function Not Available" },
{ CAM_NO_NEXUS, "Nexus Not Established" },
{ CAM_IID_INVALID, "Invalid Initiator ID" },
{ CAM_CDB_RECVD, "CDB Received" },
{ CAM_LUN_ALRDY_ENA, "LUN Already Enabled for Target Mode" },
{ CAM_SCSI_BUSY, "SCSI Bus Busy" },
};
const int num_cam_status_entries =
sizeof(cam_status_table)/sizeof(*cam_status_table);
#ifdef _KERNEL
SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD, 0, "CAM Subsystem");
#endif
void
cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen)
{
/* Trim leading/trailing spaces, nulls. */
while (srclen > 0 && src[0] == ' ')
src++, srclen--;
while (srclen > 0
&& (src[srclen-1] == ' ' || src[srclen-1] == '\0'))
srclen--;
while (srclen > 0 && dstlen > 1) {
u_int8_t *cur_pos = dst;
if (*src < 0x20 || *src >= 0x80) {
/* SCSI-II Specifies that these should never occur. */
/* non-printable character */
if (dstlen > 4) {
*cur_pos++ = '\\';
*cur_pos++ = ((*src & 0300) >> 6) + '0';
*cur_pos++ = ((*src & 0070) >> 3) + '0';
*cur_pos++ = ((*src & 0007) >> 0) + '0';
} else {
*cur_pos++ = '?';
}
} else {
/* normal character */
*cur_pos++ = *src;
}
src++;
srclen--;
dstlen -= cur_pos - dst;
dst = cur_pos;
}
*dst = '\0';
}
/*
* Compare string with pattern, returning 0 on match.
* Short pattern matches trailing blanks in name,
* wildcard '*' in pattern matches rest of name,
* wildcard '?' matches a single non-space character.
*/
int
cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len)
{
while (*pattern != '\0'&& str_len > 0) {
if (*pattern == '*') {
return (0);
}
if ((*pattern != *str)
&& (*pattern != '?' || *str == ' ')) {
return (1);
}
pattern++;
str++;
str_len--;
}
while (str_len > 0 && *str++ == ' ')
str_len--;
return (str_len);
}
caddr_t
cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries,
int entry_size, cam_quirkmatch_t *comp_func)
{
for (; num_entries > 0; num_entries--, quirk_table += entry_size) {
if ((*comp_func)(target, quirk_table) == 0)
return (quirk_table);
}
return (NULL);
}
const struct cam_status_entry*
cam_fetch_status_entry(cam_status status)
{
status &= CAM_STATUS_MASK;
return (bsearch(&status, &cam_status_table,
num_cam_status_entries,
sizeof(*cam_status_table),
camstatusentrycomp));
}
static int
camstatusentrycomp(const void *key, const void *member)
{
cam_status status;
const struct cam_status_entry *table_entry;
status = *(const cam_status *)key;
table_entry = (const struct cam_status_entry *)member;
return (status - table_entry->status_code);
}
#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)
#else /* !_KERNEL */
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)
#endif /* _KERNEL/!_KERNEL */
{
char path_str[64];
struct sbuf sb;
if ((ccb == NULL)
|| (str == NULL)
|| (str_len <= 0))
return(NULL);
if (flags == CAM_ESF_NONE)
return(NULL);
switch (ccb->ccb_h.func_code) {
case XPT_SCSI_IO:
switch (proto_flags & CAM_EPF_LEVEL_MASK) {
case CAM_EPF_NONE:
break;
case CAM_EPF_ALL:
case CAM_EPF_NORMAL:
proto_flags |= CAM_ESF_PRINT_SENSE;
/* FALLTHROUGH */
case CAM_EPF_MINIMAL:
proto_flags |= CAM_ESF_PRINT_STATUS;
default:
break;
}
break;
default:
break;
}
#ifdef _KERNEL
xpt_path_string(ccb->csio.ccb_h.path, path_str, sizeof(path_str));
#else /* !_KERNEL */
cam_path_string(device, path_str, sizeof(path_str));
#endif /* _KERNEL/!_KERNEL */
sbuf_new(&sb, str, str_len, 0);
if (flags & CAM_ESF_COMMAND) {
sbuf_cat(&sb, path_str);
switch (ccb->ccb_h.func_code) {
case XPT_SCSI_IO:
#ifdef _KERNEL
scsi_command_string(&ccb->csio, &sb);
#else /* !_KERNEL */
scsi_command_string(device, &ccb->csio, &sb);
#endif /* _KERNEL/!_KERNEL */
sbuf_printf(&sb, "\n");
break;
default:
break;
}
}
if (flags & CAM_ESF_CAM_STATUS) {
cam_status status;
const struct cam_status_entry *entry;
sbuf_cat(&sb, path_str);
status = ccb->ccb_h.status & CAM_STATUS_MASK;
entry = cam_fetch_status_entry(status);
if (entry == NULL)
sbuf_printf(&sb, "CAM Status: Unknown (%#x)\n",
ccb->ccb_h.status);
else
sbuf_printf(&sb, "CAM Status: %s\n",
entry->status_text);
}
if (flags & CAM_ESF_PROTO_STATUS) {
switch (ccb->ccb_h.func_code) {
case XPT_SCSI_IO:
if ((ccb->ccb_h.status & CAM_STATUS_MASK) !=
CAM_SCSI_STATUS_ERROR)
break;
if (proto_flags & CAM_ESF_PRINT_STATUS) {
sbuf_cat(&sb, path_str);
/*
* Print out the SCSI status byte as long as
* the user wants some protocol output.
*/
sbuf_printf(&sb, "SCSI Status: %s\n",
scsi_status_string(&ccb->csio));
}
if ((proto_flags & CAM_ESF_PRINT_SENSE)
&& (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
&& (ccb->ccb_h.status & CAM_AUTOSNS_VALID)) {
#ifdef _KERNEL
scsi_sense_sbuf(&ccb->csio, &sb,
SSS_FLAG_NONE);
#else /* !_KERNEL */
scsi_sense_sbuf(device, &ccb->csio, &sb,
SSS_FLAG_NONE);
#endif /* _KERNEL/!_KERNEL */
}
break;
default:
break;
}
}
sbuf_finish(&sb);
return(sbuf_data(&sb));
}
#ifdef _KERNEL
void
cam_error_print(union ccb *ccb, cam_error_string_flags flags,
cam_error_proto_flags proto_flags)
{
char str[512];
printf("%s", cam_error_string(ccb, str, sizeof(str), flags,
proto_flags));
}
#else /* !_KERNEL */
void
cam_error_print(struct cam_device *device, union ccb *ccb,
cam_error_string_flags flags, cam_error_proto_flags proto_flags,
FILE *ofile)
{
char str[512];
if ((device == NULL) || (ccb == NULL) || (ofile == NULL))
return;
fprintf(ofile, "%s", cam_error_string(device, ccb, str, sizeof(str),
flags, proto_flags));
}
#endif /* _KERNEL/!_KERNEL */