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* Add "getcache" and "setcache" commands to get/set basic cache 

parameters (enables, really).
* Fix an error in the manpage.
* Shuffle some code to group things together better.
This commit is contained in:
thorpej 2002-09-03 16:56:05 +00:00
parent c9dafdb84c
commit 0683880e19
2 changed files with 129 additions and 24 deletions
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34
sbin/scsictl/scsictl.8
View File

@ -1,6 +1,6 @@
.\" $NetBSD: scsictl.8,v 1.15 2002/06/26 18:07:21 wiz Exp $
.\" $NetBSD: scsictl.8,v 1.16 2002/09/03 16:56:05 thorpej Exp $
.\"
.\" Copyright (c) 1998 The NetBSD Foundation, Inc.
.\" Copyright (c) 1998, 2002 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to The NetBSD Foundation
@ -35,7 +35,7 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
.Dd October 15, 1998
.Dd September 3, 2002
.Dt SCSICTL 8
.Os
.Sh NAME
@ -142,13 +142,6 @@ support the
.Li SCIOCRESET
ioctl.
.Pp
.Nm reset
.Pp
Reset the SCSI bus. This command is only supported if the host adapter
supports the
.Li SCBUSIORESET
ioctl.
.Pp
.Nm start
.Pp
Send a
@ -169,6 +162,27 @@ Send a
.Dq TEST UNIT READY
command to the device. This is useful for generating
current device status.
.Pp
.Nm getcache
.Pp
Returns basic cache parameters for the device.
.Pp
.Nm setcache
.Ar none|r|w|rw
.Op Ar save
.Pp
Set basic cache parameters for the device. The cache may be disabled
.Pq none ,
the read cache enabled
.Pq r ,
the write cache enabled
.Pq w ,
or both read and write cache enabled
.Pq rw .
If the drive's cache parameters are savable, specifying
.Ar save
after the cache enable state will cause the parameters to be saved in
non-volatile storage.
.Sh BUS COMMANDS
The following commands are supported for SCSI busses:
.Pp

119
sbin/scsictl/scsictl.c
View File

@ -1,7 +1,7 @@
/* $NetBSD: scsictl.c,v 1.17 2002/07/20 08:36:28 grant Exp $ */
/* $NetBSD: scsictl.c,v 1.18 2002/09/03 16:56:05 thorpej Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* Copyright (c) 1998, 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
@ -85,6 +85,8 @@ void device_reset __P((int, char *[]));
void device_start __P((int, char *[]));
void device_stop __P((int, char *[]));
void device_tur __P((int, char *[]));
void device_getcache __P((int, char *[]));
void device_setcache __P((int, char *[]));
struct command device_commands[] = {
{ "format", "[blocksize [immediate]]", device_format },
@ -96,6 +98,8 @@ struct command device_commands[] = {
{ "start", "", device_start },
{ "stop", "", device_stop },
{ "tur", "", device_tur },
{ "getcache", "", device_getcache },
{ "setcache", "none|r|w|rw [save]", device_setcache },
{ NULL, NULL, NULL },
};
@ -552,8 +556,6 @@ device_reserve(argc, argv)
return;
}
/*
* device_reset:
*
@ -576,28 +578,94 @@ device_reset(argc, argv)
}
/*
* BUS COMMANDS
*/
/*
* bus_reset:
* device_getcache:
*
* Issue a reset to a SCSI bus.
* Get the caching parameters for a SCSI disk.
*/
void
bus_reset(argc, argv)
device_getcache(argc, argv)
int argc;
char *argv[];
{
struct {
struct scsipi_mode_header header;
struct scsi_blk_desc blk_desc;
struct page_caching caching_params;
} data;
/* No arguments. */
if (argc != 0)
usage();
if (ioctl(fd, SCBUSIORESET, NULL) != 0)
err(1, "SCBUSIORESET");
scsi_mode_sense(fd, 0x08, 0x00, &data, sizeof(data));
return;
if ((data.caching_params.flags & (CACHING_RCD|CACHING_WCE)) ==
CACHING_RCD)
printf("%s: no caches enabled\n", dvname);
else {
printf("%s: read cache %senabled\n", dvname,
(data.caching_params.flags & CACHING_RCD) ? "not " : "");
printf("%s: write-back cache %senabled\n", dvname,
(data.caching_params.flags & CACHING_WCE) ? "" : "not ");
}
printf("%s: caching parameters are %ssavable\n", dvname,
(data.caching_params.pg_code & PGCODE_PS) ? "" : "not ");
}
/*
* device_setcache:
*
* Set cache enables for a SCSI disk.
*/
void
device_setcache(argc, argv)
int argc;
char *argv[];
{
struct {
struct scsipi_mode_header header;
struct scsi_blk_desc blk_desc;
struct page_caching caching_params;
} data;
int dlen;
u_int8_t flags, byte2;
if (argc > 2 || argc == 0)
usage();
if (strcmp(argv[0], "none") == 0)
flags = CACHING_RCD;
else if (strcmp(argv[0], "r") == 0)
flags = 0;
else if (strcmp(argv[0], "w") == 0)
flags = CACHING_RCD|CACHING_WCE;
else if (strcmp(argv[0], "rw") == 0)
flags = CACHING_WCE;
else
usage();
if (argc == 2) {
if (strcmp(argv[1], "save") == 0)
byte2 = SMS_SP;
else
usage();
}
scsi_mode_sense(fd, 0x08, 0x00, &data, sizeof(data));
data.caching_params.pg_code &= PGCODE_MASK;
data.caching_params.flags =
(data.caching_params.flags & ~(CACHING_RCD|CACHING_WCE)) | flags;
data.caching_params.cache_segment_size[0] = 0;
data.caching_params.cache_segment_size[1] = 0;
data.header.data_length = 0;
dlen = sizeof(data.header) + sizeof(data.blk_desc) + 2 +
data.caching_params.pg_length;
scsi_mode_select(fd, byte2, &data, dlen);
}
/*
@ -677,7 +745,30 @@ device_tur(argc, argv)
return;
}
/*
* BUS COMMANDS
*/
/*
* bus_reset:
*
* Issue a reset to a SCSI bus.
*/
void
bus_reset(argc, argv)
int argc;
char *argv[];
{
/* No arguments. */
if (argc != 0)
usage();
if (ioctl(fd, SCBUSIORESET, NULL) != 0)
err(1, "SCBUSIORESET");
return;
}
/*
* bus_scan: