Commit c1f40631 authored by Thomas Schmitt's avatar Thomas Schmitt

Centralized interpretation of SCSI command outcome

parent 4cc52409
#define Cdrskin_timestamP "2010.08.21.095456"
#define Cdrskin_timestamP "2010.09.14.124934"
......@@ -759,13 +759,17 @@ int sg_release(struct burn_drive *d)
int sg_issue_command(struct burn_drive *d, struct command *c)
{
int done = 0, err, sense_len = 0, ret, ignore_error, no_retry = 0;
int cam_pass_err_recover = 0, key, asc, ascq;
int done = 0, err, sense_len = 0, ret, ignore_error, no_retry = 0, i;
int cam_pass_err_recover = 0, key, asc, ascq, timeout_ms;
union ccb *ccb;
char buf[161];
static FILE *fp = NULL;
time_t start_time;
snprintf(buf, sizeof (buf), "sg_issue_command d->cam=%p d->released=%d",
#define Libburn_use_scsi_eval_cmd_outcomE yes
snprintf(buf, sizeof (buf),
"sg_issue_command d->cam=%p d->released=%d",
(void*)d->cam, d->released);
mmc_function_spy(NULL, buf);
......@@ -854,7 +858,9 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
ccb->csio.dxfer_len = 0;
}
do {
start_time = time(NULL);
timeout_ms = 200000;
for (i = 0; !done; i++) {
memset(c->sense, 0, sizeof(c->sense));
err = cam_send_ccb(d->cam, ccb);
......@@ -954,6 +960,17 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
c->sense[13] = 0x00;
no_retry = 1;
}
#ifdef Libburn_use_scsi_eval_cmd_outcomE
done = scsi_eval_cmd_outcome(d, c, fp, c->sense,
sense_len, 0, start_time,
timeout_ms, i,
2 | !!ignore_error);
#else /* Libburn_use_scsi_eval_cmd_outcomE */
if (no_retry || ignore_error || !c->retry) {
c->error = 1;
{ret = 1; goto ex;}
......@@ -983,12 +1000,18 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
0, 1 | 2);
{ret = 1; goto ex;}
}
#endif /* ! Libburn_use_scsi_eval_cmd_outcomE */
} else {
done = 1;
}
} while (!done);
ret = 1;
ex:;
#ifndef Libburn_use_scsi_eval_cmd_outcomE
if (c->error)
scsi_notify_error(d, c, c->sense, 18, 0);
......@@ -997,6 +1020,8 @@ ex:;
scsi_log_err(c, fp, c->sense, sense_len > 0 ? sense_len : 18,
0, (c->error != 0) | 2);
#endif /* ! Libburn_use_scsi_eval_cmd_outcomE */
cam_freeccb(ccb);
return ret;
}
......
......@@ -586,6 +586,9 @@ int sg_release(struct burn_drive *d)
}
#define Libburn_use_scsi_eval_cmd_outcomE yes
/** Sends a SCSI command to the drive, receives reply and evaluates wether
the command succeeded or shall be retried or finally failed.
Returned SCSI errors shall not lead to a return value indicating failure.
......@@ -597,8 +600,8 @@ int sg_release(struct burn_drive *d)
*/
int sg_issue_command(struct burn_drive *d, struct command *c)
{
int sense_valid = 0, i, usleep_time, timeout_ms, no_retry = 0;
int key = 0, asc = 0, ascq = 0;
int sense_valid = 0, i, timeout_ms, no_retry = 0;
int key = 0, asc = 0, ascq = 0, done = 0;
time_t start_time;
driver_return_code_t i_status;
unsigned int dxfer_len;
......@@ -608,6 +611,10 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
CdIo_t *p_cdio;
unsigned char *sense_pt = NULL;
#ifndef Libburn_use_scsi_eval_cmd_outcomE
int usleep_time;
#endif
c->error = 0;
if (d->p_cdio == NULL) {
return 0;
......@@ -643,7 +650,7 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
/* retry-loop */
start_time = time(NULL);
timeout_ms = 200000;
for(i = 0; ; i++) {
for(i = 0; !done; i++) {
i_status = mmc_run_cmd(p_cdio, timeout_ms, &cdb, e_direction,
dxfer_len, c->page->data);
......@@ -688,6 +695,14 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
}
}
if (i_status != 0 || (key || asc || ascq)) {
#ifdef Libburn_use_scsi_eval_cmd_outcomE
done = scsi_eval_cmd_outcome(d, c, fp, c->sense, 18,
0, start_time, timeout_ms, i, 2);
#else /* Libburn_use_scsi_eval_cmd_outcomE */
if (no_retry || !c->retry) {
c->error = 1;
goto ex;
......@@ -724,17 +739,24 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
goto ex;
}
usleep(usleep_time);
#endif /* ! Libburn_use_scsi_eval_cmd_outcomE */
} else
break; /* retry-loop */
done = 1;
} /* end of retry-loop */
#ifndef Libburn_use_scsi_eval_cmd_outcomE
ex:;
if (c->error)
scsi_notify_error(d, c, c->sense, 18, 0);
if (burn_sg_log_scsi & 3)
/* >>> Need own duration time measurement. Then remove bit1 */
scsi_log_err(c, fp, c->sense, 18, 0, (c->error != 0) | 2);
#endif /* ! Libburn_use_scsi_eval_cmd_outcomE */
return 1;
}
......
......@@ -1782,13 +1782,19 @@ int sg_release(struct burn_drive *d)
*/
int sg_issue_command(struct burn_drive *d, struct command *c)
{
int done = 0, no_c_page = 0, usleep_time, i;
int done = 0, no_c_page = 0, i;
int err;
time_t start_time;
sg_io_hdr_t s;
/* ts A61030 */
static FILE *fp= NULL;
#define Libburn_use_scsi_eval_cmd_outcomE yes
#ifndef Libburn_use_scsi_eval_cmd_outcomE
int usleep_time;
#endif
/* <<< ts A60821
debug: for tracing calls which might use open drive fds */
char buf[161];
......@@ -1910,6 +1916,14 @@ if(0){
/* <<< */
#endif /* NIX */
#ifdef Libburn_use_scsi_eval_cmd_outcomE
done = scsi_eval_cmd_outcome(d, c, fp, s.sbp, s.sb_len_wr,
s.duration, start_time, s.timeout, i, 0);
#else /* Libburn_use_scsi_eval_cmd_outcomE */
if (s.sb_len_wr) {
if (!c->retry) {
c->error = 1;
......@@ -1951,14 +1965,28 @@ if(0){
} else {
done = 1;
}
#endif /* ! Libburn_use_scsi_eval_cmd_outcomE */
}
/* ts A61106 */
#ifdef Libburn_use_scsi_eval_cmd_outcomE
if (s.host_status != Libburn_sg_host_oK ||
(s.driver_status != Libburn_sg_driver_oK && !c->error)) {
#else /* Libburn_use_scsi_eval_cmd_outcomE */
ex:;
if (c->error) {
scsi_notify_error(d, c, s.sbp, s.sb_len_wr, 0);
} else if (s.host_status != Libburn_sg_host_oK ||
s.driver_status != Libburn_sg_driver_oK) {
#endif /* ! Libburn_use_scsi_eval_cmd_outcomE */
char msg[161];
sprintf(msg,
......@@ -1973,9 +2001,13 @@ ex:;
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
msg, 0, 0);
}
#ifndef Libburn_use_scsi_eval_cmd_outcomE
if (burn_sg_log_scsi & 3)
scsi_log_err(c, fp, s.sbp, s.sb_len_wr,
s.duration, c->error != 0);
#endif
return 1;
}
......
......@@ -565,12 +565,17 @@ int sg_release(struct burn_drive *d)
*/
int sg_issue_command(struct burn_drive *d, struct command *c)
{
int i, usleep_time, timeout_ms, no_retry = 0, ret, key, asc, ascq;
int i, timeout_ms, ret, key, asc, ascq, done = 0;
time_t start_time;
struct uscsi_cmd cgc;
char msg[80];
static FILE *fp = NULL;
#define Libburn_use_scsi_eval_cmd_outcomE yes
#ifndef Libburn_use_scsi_eval_cmd_outcomE
int usleep_time, no_retry = 0;
#endif
c->error = 0;
memset(c->sense, 0, sizeof(c->sense));
if (d->fd == -1)
......@@ -616,7 +621,7 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
/* retry-loop */
start_time = time(NULL);
timeout_ms = 200000;
for(i = 0; ; i++) {
for(i = 0; !done; i++) {
ret = ioctl(d->fd, USCSICMD, &cgc);
......@@ -639,6 +644,25 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
return -1;
}
#ifdef Libburn_use_scsi_eval_cmd_outcomE
/* >>> Should replace "18" by realistic sense length.
What's about following older remark ?
*/
/* >>> valid sense: cgc.uscsi_rqlen - cgc.uscsi_rqresid */;
spc_decode_sense(c->sense, 0, &key, &asc, &ascq);
if (key || asc || ascq) {
done = scsi_eval_cmd_outcome(d, c, fp, c->sense, 18, 0,
start_time, timeout_ms, i, 2);
} else
done = 1;
#else /* Libburn_use_scsi_eval_cmd_outcomE */
/* >>> valid sense: cgc.uscsi_rqlen - cgc.uscsi_rqresid */;
spc_decode_sense(c->sense, 0, &key, &asc, &ascq);
......@@ -681,15 +705,24 @@ int sg_issue_command(struct burn_drive *d, struct command *c)
usleep(usleep_time);
} else
break; /* retry-loop */
#endif /* ! Libburn_use_scsi_eval_cmd_outcomE */
} /* end of retry-loop */
#ifndef Libburn_use_scsi_eval_cmd_outcomE
ex:;
if (c->error)
scsi_notify_error(d, c, c->sense, 18, 0);
if (burn_sg_log_scsi & 3)
/* >>> Need own duration time measurement. Then remove bit1 */
scsi_log_err(c, fp, c->sense, 18, 0, (c->error != 0) | 2);
#endif /* ! Libburn_use_scsi_eval_cmd_outcomE */
return 1;
}
......
......@@ -1408,28 +1408,10 @@ int scsi_notify_error(struct burn_drive *d, struct command *c,
sprintf(msg, "SCSI error condition on command %2.2Xh %s: ",
c->opcode[0],
scsi_command_name((unsigned int) c->opcode[0], 0));
#ifdef NIX
if (key>=0)
sprintf(msg+strlen(msg), " key=%Xh", key);
if (asc>=0)
sprintf(msg+strlen(msg), " asc=%2.2Xh", asc);
if (ascq>=0)
sprintf(msg+strlen(msg), " ascq=%2.2Xh", ascq);
ret = libdax_msgs_submit(libdax_messenger, d->global_index, 0x0002010f,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH, msg,0,0);
if (ret < 0)
return ret;
ret = libdax_msgs_submit(libdax_messenger, d->global_index, 0x0002010f,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
scsi_msg,0,0);
#else
strcat(msg, scsi_msg);
ret = libdax_msgs_submit(libdax_messenger, d->global_index, 0x0002010f,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH, msg,0,0);
#endif /* NIX */
return ret;
}
......@@ -1530,13 +1512,6 @@ int scsi_log_err(struct command *c, void *fp_in, unsigned char sense[18],
if (fp != NULL && (fp == stderr || (burn_sg_log_scsi & 1))) {
if (flag & 1) {
durtxt[0] = 0;
if (!(flag & 2))
sprintf(durtxt, " (%6d ms)", duration);
spc_decode_sense(sense, 0, &key, &asc, &ascq);
fprintf(fp, "+++ key=%X asc=%2.2Xh ascq=%2.2Xh%s\n",
(unsigned int) key, (unsigned int) asc,
(unsigned int) ascq, durtxt);
l = 18;
if ((sense[0] & 0x7f) == 0x72 ||
(sense[0] & 0x7f) == 0x73)
......@@ -1547,6 +1522,13 @@ int scsi_log_err(struct command *c, void *fp_in, unsigned char sense[18],
for (i = 0 ; i < l; i++)
fprintf(fp, " %2.2X", sense[i]);
fprintf(fp, "\n");
durtxt[0] = 0;
if (!(flag & 2))
sprintf(durtxt, " (%6d ms)", duration);
spc_decode_sense(sense, 0, &key, &asc, &ascq);
fprintf(fp, "+++ key=%X asc=%2.2Xh ascq=%2.2Xh%s\n",
(unsigned int) key, (unsigned int) asc,
(unsigned int) ascq, durtxt);
} else {
scsi_show_cmd_reply(c, fp, 0);
if (!(flag & 2))
......@@ -1561,3 +1543,51 @@ int scsi_log_err(struct command *c, void *fp_in, unsigned char sense[18],
return 1;
}
/* ts B00808 */
/*
@param flag bit0 = do not retry
bit1 = do not print duration
@return 0 = not yet done , 1 = done , -1 = error
*/
int scsi_eval_cmd_outcome(struct burn_drive *d, struct command *c, void *fp,
unsigned char *sense, int sense_len,
int duration, time_t start_time, int timeout_ms,
int loop_count, int flag)
{
enum response outcome;
int done = -1, usleep_time;
if (sense_len <= 0)
return 1;
if (burn_sg_log_scsi & 3)
scsi_log_err(c, fp, sense, sense_len, duration,
1 | (flag & 2));
outcome = scsi_error(d, sense, sense_len);
if (outcome == RETRY && c->retry && !(flag & 1)) {
/* Calming down retries and breaking up endless cycle
*/
usleep_time = Libburn_scsi_retry_usleeP +
loop_count * Libburn_scsi_retry_incR;
if (time(NULL) + usleep_time / 1000000 - start_time >
timeout_ms / 1000 + 1) {
done = 1;
goto ex;
}
usleep(usleep_time);
if (burn_sg_log_scsi & 3)
scsi_log_cmd(c, fp, 0);
return 0;
} else if (outcome == RETRY) {
done = 1;
} else if (outcome == GO_ON) {
return 1;
} else if (outcome == FAIL) {
done = 1;
}
ex:;
c->error = 1;
scsi_notify_error(d, c, sense, sense_len, 0);
return done;
}
......@@ -84,5 +84,23 @@ int scsi_log_err(struct command *c, void *fp, unsigned char sense[18],
int spc_decode_sense(unsigned char *sense, int senselen,
int *key, int *asc, int *ascq);
/* ts B00808 */
/** Evaluates outcome of a single SCSI command, eventually logs sense data,
and issues DEBUG error message in case the command is evaluated as done.
@param flag bit1 = do not print duration
@return 0 = not yet done , 1 = done , -1 = error
*/
int scsi_eval_cmd_outcome(struct burn_drive *d, struct command *c, void *fp_in,
unsigned char *sense, int sense_len,
int duration, time_t start_time, int timeout_ms,
int loop_count, int flag);
/* The waiting time before eventually retrying a failed SCSI command.
Before each retry wait Libburn_scsi_retry_incR longer than with
the previous one.
*/
#define Libburn_scsi_retry_usleeP 100000
#define Libburn_scsi_retry_incR 100000
#endif /*__SPC*/
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