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Add to camcontrol cmd support for sending arbitrary ATA commands.

Browse Source 
It could be used for broad range of tasks, such as configuring drive
power management modes, caching, security and any other features and tasks,
not supported by existing drivers.
This commit is contained in:
Alexander Motin 2009-09-04 18:21:40 +00:00
parent 4dc50fc92d
commit 80976615e3
2 changed files with 141 additions and 52 deletions
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23
sbin/camcontrol/camcontrol.8
View File

@ -27,7 +27,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd June 29, 2009
.Dd September 4, 2009
.Dt CAMCONTROL 8
.Os
.Sh NAME
@ -120,10 +120,12 @@
.Ic cmd
.Op device id
.Op generic args
.Aq Fl a Ar cmd Op args
.Aq Fl c Ar cmd Op args
.Op Fl i Ar len Ar fmt
.Bk -words
.Op Fl o Ar len Ar fmt Op args
.Op Fl r Ar fmt
.Ek
.Nm
.Ic debug
@ -486,12 +488,14 @@ Saved values
.El
.El
.It Ic cmd
Allows the user to send an arbitrary SCSI CDB to any device.
Allows the user to send an arbitrary ATA or SCSI CDB to any device.
The
.Ic cmd
function requires the
.Fl c
argument to specify the CDB.
argument to specify SCSI CDB or the
.Fl a
argument to specify ATA Command Block registers values.
Other arguments are optional, depending on
the command type.
The command and data specification syntax is documented
@ -503,9 +507,13 @@ SCSI device in question, you MUST specify either
or
.Fl o .
.Bl -tag -width 17n
.It Fl a Ar cmd Op args
This specifies the content of 12 ATA Command Block registers (command,
features, lba_low, lba_mid, lba_high, device, lba_low_exp, lba_mid_exp.
lba_high_exp, features_exp, sector_count, sector_count_exp).
.It Fl c Ar cmd Op args
This specifies the SCSI CDB.
CDBs may be 6, 10, 12 or 16 bytes.
SCSI CDBs may be 6, 10, 12 or 16 bytes.
.It Fl i Ar len Ar fmt
This specifies the amount of data to read, and how it should be displayed.
If the format is
@ -519,6 +527,13 @@ If the format is
.Sq - ,
.Ar len
bytes of data will be read from standard input and written to the device.
.It Fl r Ar fmt
This specifies that 11 result ATA Command Block registers should be displayed
(status, error, lba_low, lba_mid, lba_high, device, lba_low_exp, lba_mid_exp,
lba_high_exp, sector_count, sector_count_exp), and how.
If the format is
.Sq - ,
11 result registers will be written to standard output in hex.
.El
.It Ic debug
Turn on CAM debugging printfs in the kernel.

170
sbin/camcontrol/camcontrol.c
View File

@ -120,7 +120,7 @@ struct camcontrol_opts {
};
#ifndef MINIMALISTIC
static const char scsicmd_opts[] = "c:i:o:";
static const char scsicmd_opts[] = "a:c:i:o:r";
static const char readdefect_opts[] = "f:GP";
static const char negotiate_opts[] = "acD:O:qR:T:UW:";
#endif
@ -2078,12 +2078,15 @@ scsicmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
u_int32_t flags = CAM_DIR_NONE;
u_int8_t *data_ptr = NULL;
u_int8_t cdb[20];
u_int8_t atacmd[12];
struct get_hook hook;
int c, data_bytes = 0;
int cdb_len = 0;
char *datastr = NULL, *tstr;
int atacmd_len = 0;
int need_res = 0;
char *datastr = NULL, *tstr, *resstr = NULL;
int error = 0;
int fd_data = 0;
int fd_data = 0, fd_res = 0;
int retval;
ccb = cam_getccb(device);
@ -2094,10 +2097,32 @@ scsicmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
}
bzero(&(&ccb->ccb_h)[1],
sizeof(struct ccb_scsiio) - sizeof(struct ccb_hdr));
sizeof(union ccb) - sizeof(struct ccb_hdr));
while ((c = getopt(argc, argv, combinedopt)) != -1) {
switch(c) {
case 'a':
tstr = optarg;
while (isspace(*tstr) && (*tstr != '\0'))
tstr++;
hook.argc = argc - optind;
hook.argv = argv + optind;
hook.got = 0;
atacmd_len = buff_encode_visit(atacmd, sizeof(atacmd), tstr,
iget, &hook);
/*
* Increment optind by the number of arguments the
* encoding routine processed. After each call to
* getopt(3), optind points to the argument that
* getopt should process _next_. In this case,
* that means it points to the first command string
* argument, if there is one. Once we increment
* this, it should point to either the next command
* line argument, or it should be past the end of
* the list.
*/
optind += hook.got;
break;
case 'c':
tstr = optarg;
while (isspace(*tstr) && (*tstr != '\0'))
@ -2194,6 +2219,16 @@ scsicmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
iget, &hook);
optind += hook.got;
break;
case 'r':
need_res = 1;
hook.argc = argc - optind;
hook.argv = argv + optind;
hook.got = 0;
resstr = cget(&hook, NULL);
if ((resstr != NULL) && (resstr[0] == '-'))
fd_res = 1;
optind += hook.got;
break;
default:
break;
}
@ -2226,50 +2261,51 @@ scsicmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
/* Disable freezing the device queue */
flags |= CAM_DEV_QFRZDIS;
/*
* This is taken from the SCSI-3 draft spec.
* (T10/1157D revision 0.3)
* The top 3 bits of an opcode are the group code. The next 5 bits
* are the command code.
* Group 0: six byte commands
* Group 1: ten byte commands
* Group 2: ten byte commands
* Group 3: reserved
* Group 4: sixteen byte commands
* Group 5: twelve byte commands
* Group 6: vendor specific
* Group 7: vendor specific
*/
switch((cdb[0] >> 5) & 0x7) {
case 0:
cdb_len = 6;
break;
case 1:
case 2:
cdb_len = 10;
break;
case 3:
case 6:
case 7:
/* computed by buff_encode_visit */
break;
case 4:
cdb_len = 16;
break;
case 5:
cdb_len = 12;
break;
}
if (cdb_len) {
/*
* This is taken from the SCSI-3 draft spec.
* (T10/1157D revision 0.3)
* The top 3 bits of an opcode are the group code.
* The next 5 bits are the command code.
* Group 0: six byte commands
* Group 1: ten byte commands
* Group 2: ten byte commands
* Group 3: reserved
* Group 4: sixteen byte commands
* Group 5: twelve byte commands
* Group 6: vendor specific
* Group 7: vendor specific
*/
switch((cdb[0] >> 5) & 0x7) {
case 0:
cdb_len = 6;
break;
case 1:
case 2:
cdb_len = 10;
break;
case 3:
case 6:
case 7:
/* computed by buff_encode_visit */
break;
case 4:
cdb_len = 16;
break;
case 5:
cdb_len = 12;
break;
}
/*
* We should probably use csio_build_visit or something like that
* here, but it's easier to encode arguments as you go. The
* alternative would be skipping the CDB argument and then encoding
* it here, since we've got the data buffer argument by now.
*/
bcopy(cdb, &ccb->csio.cdb_io.cdb_bytes, cdb_len);
/*
* We should probably use csio_build_visit or something like that
* here, but it's easier to encode arguments as you go. The
* alternative would be skipping the CDB argument and then encoding
* it here, since we've got the data buffer argument by now.
*/
bcopy(cdb, &ccb->csio.cdb_io.cdb_bytes, cdb_len);
cam_fill_csio(&ccb->csio,
cam_fill_csio(&ccb->csio,
/*retries*/ retry_count,
/*cbfcnp*/ NULL,
/*flags*/ flags,
@ -2279,6 +2315,21 @@ scsicmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
/*sense_len*/ SSD_FULL_SIZE,
/*cdb_len*/ cdb_len,
/*timeout*/ timeout ? timeout : 5000);
} else {
atacmd_len = 12;
bcopy(atacmd, &ccb->ataio.cmd.command, atacmd_len);
if (need_res)
ccb->ataio.cmd.flags |= CAM_ATAIO_NEEDRESULT;
cam_fill_ataio(&ccb->ataio,
/*retries*/ retry_count,
/*cbfcnp*/ NULL,
/*flags*/ flags,
/*tag_action*/ 0,
/*data_ptr*/ data_ptr,
/*dxfer_len*/ data_bytes,
/*timeout*/ timeout ? timeout : 5000);
}
if (((retval = cam_send_ccb(device, ccb)) < 0)
|| ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)) {
@ -2296,6 +2347,28 @@ scsicmd(struct cam_device *device, int argc, char **argv, char *combinedopt,
goto scsicmd_bailout;
}
if (atacmd_len && need_res) {
if (fd_res == 0) {
buff_decode_visit(&ccb->ataio.res.status, 11, resstr,
arg_put, NULL);
fprintf(stdout, "\n");
} else {
fprintf(stdout,
"%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n",
ccb->ataio.res.status,
ccb->ataio.res.error,
ccb->ataio.res.lba_low,
ccb->ataio.res.lba_mid,
ccb->ataio.res.lba_high,
ccb->ataio.res.device,
ccb->ataio.res.lba_low_exp,
ccb->ataio.res.lba_mid_exp,
ccb->ataio.res.lba_high_exp,
ccb->ataio.res.sector_count,
ccb->ataio.res.sector_count_exp);
fflush(stdout);
}
}
if (((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)
&& (arglist & CAM_ARG_CMD_IN)
@ -4029,8 +4102,9 @@ usage(int verbose)
" camcontrol defects [dev_id][generic args] <-f format> [-P][-G]\n"
" camcontrol modepage [dev_id][generic args] <-m page | -l>\n"
" [-P pagectl][-e | -b][-d]\n"
" camcontrol cmd [dev_id][generic args] <-c cmd [args]>\n"
" [-i len fmt|-o len fmt [args]]\n"
" camcontrol cmd [dev_id][generic args]\n"
" <-a cmd [args] | -c cmd [args]>\n"
" [-i len fmt|-o len fmt [args]] [-r fmt]\n"
" camcontrol debug [-I][-P][-T][-S][-X][-c]\n"
" <all|bus[:target[:lun]]|off>\n"
" camcontrol tags [dev_id][generic args] [-N tags] [-q] [-v]\n"