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Implement dkstats for worm devices so they show up in iostat et al.

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I got tired of not seeing my worm stats show up during a burn. :)
[Joerg, I just stapled in 1MB/sec for a bogus xfer rate and left seek = 1,
 as suggested - I'm not going to dynamically calculate the xfer rate from
 a known device spectable, OK? :-)]
Reviewed by:	joerg
This commit is contained in:
Jordan K. Hubbard 1997-04-04 22:12:55 +00:00
parent b15443ba83
commit 6c0a2b9722
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=24641
1 changed files with 22 additions and 1 deletions
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23
sys/scsi/worm.c
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@ -43,7 +43,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: worm.c,v 1.34 1997/03/23 06:33:55 bde Exp $
* $Id: worm.c,v 1.35 1997/03/24 11:25:04 bde Exp $
*/
#include "opt_bounce.h"
@ -66,6 +66,7 @@
#include <scsi/scsi_disk.h>
#include <scsi/scsi_driver.h>
#include <scsi/scsi_worm.h>
#include <sys/dkstat.h>
/* #include <scsi/scsi_cd.h> */ /* XXX a CD-R includes all CD functionality */
struct worm_quirks
@ -90,6 +91,7 @@ struct worm_quirks
struct scsi_data
{
struct buf_queue_head buf_queue;
int dkunit; /* disk stats unit number */
u_int32_t n_blks; /* Number of blocks (0 for bogus) */
u_int32_t blk_size; /* Size of each blocks */
#ifdef DEVFS
@ -203,6 +205,18 @@ struct worm_quirks worm_quirks[] = {
{0}
};
static inline void
worm_registerdev(int unit)
{
if (dk_ndrive < DK_NDRIVE) {
sprintf(dk_names[dk_ndrive], "worm%d", unit);
dk_wpms[dk_ndrive] = (1*1024*1024/2); /* 1MB/sec XXX - fake! */
SCSI_DATA(&worm_switch, unit)->dkunit = dk_ndrive++;
} else {
SCSI_DATA(&worm_switch, unit)->dkunit = -1;
}
}
static errval
worm_size(struct scsi_link *sc_link, int flags)
{
@ -239,6 +253,7 @@ worm_size(struct scsi_link *sc_link, int flags)
static errval
wormattach(struct scsi_link *sc_link)
{
u_int32_t unit = sc_link->dev_unit;
#ifdef DEVFS
int mynor;
#endif
@ -258,6 +273,7 @@ wormattach(struct scsi_link *sc_link)
devfs_add_devswf(&worm_cdevsw, mynor | SCSI_CONTROL_MASK,
DV_CHR, 0, 0, 0600, "rworm%d.ctl", mynor);
#endif
worm_registerdev(unit);
return 0;
}
@ -351,6 +367,11 @@ wormstart(unit, flags)
100000,
bp,
flags | SCSI_NOSLEEP) == SUCCESSFULLY_QUEUED) {
if (worm->dkunit >= 0) { /* Cloned from od.c, possibly with same mistakes. :) */
dk_xfer[worm->dkunit]++;
dk_seek[worm->dkunit] = 1; /* single track */
dk_wds[worm->dkunit] += bp->b_bcount >> 6;
}
if ((bp->b_flags & B_READ) == B_WRITE)
worm->worm_flags |= WORMFL_WRITTEN;
} else {