From: Blue Swirl <blauwirbel@gmail.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [4821] Add rigid and flexible disk geometry page support
Date: Wed, 02 Jul 2008 15:16:20 +0000 [thread overview]
Message-ID: <E1KE44C-0002ZA-3P@cvs.savannah.gnu.org> (raw)
Revision: 4821
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4821
Author: blueswir1
Date: 2008-07-02 15:16:18 +0000 (Wed, 02 Jul 2008)
Log Message:
-----------
Add rigid and flexible disk geometry page support
Modified Paths:
--------------
trunk/hw/scsi-disk.c
Modified: trunk/hw/scsi-disk.c
===================================================================
--- trunk/hw/scsi-disk.c 2008-07-01 23:16:53 UTC (rev 4820)
+++ trunk/hw/scsi-disk.c 2008-07-02 15:16:18 UTC (rev 4821)
@@ -532,7 +532,76 @@
outbuf[2] = 0x80; /* Readonly. */
}
p += 4;
- if ((page == 8 || page == 0x3f)) {
+ if (page == 4) {
+ int cylinders, heads, secs;
+
+ /* Rigid disk device geometry page. */
+ p[0] = 4;
+ p[1] = 0x16;
+ /* if a geometry hint is available, use it */
+ bdrv_get_geometry_hint(s->bdrv, &cylinders, &heads, &secs);
+ p[2] = (cylinders >> 16) & 0xff;
+ p[3] = (cylinders >> 8) & 0xff;
+ p[4] = cylinders & 0xff;
+ p[5] = heads & 0xff;
+ /* Write precomp start cylinder, disabled */
+ p[6] = (cylinders >> 16) & 0xff;
+ p[7] = (cylinders >> 8) & 0xff;
+ p[8] = cylinders & 0xff;
+ /* Reduced current start cylinder, disabled */
+ p[9] = (cylinders >> 16) & 0xff;
+ p[10] = (cylinders >> 8) & 0xff;
+ p[11] = cylinders & 0xff;
+ /* Device step rate [ns], 200ns */
+ p[12] = 0;
+ p[13] = 200;
+ /* Landing zone cylinder */
+ p[14] = 0xff;
+ p[15] = 0xff;
+ p[16] = 0xff;
+ /* Medium rotation rate [rpm], 5400 rpm */
+ p[20] = (5400 >> 8) & 0xff;
+ p[21] = 5400 & 0xff;
+ p += 0x16;
+ } else if (page == 5) {
+ int cylinders, heads, secs;
+
+ /* Flexible disk device geometry page. */
+ p[0] = 5;
+ p[1] = 0x1e;
+ /* Transfer rate [kbit/s], 5Mbit/s */
+ p[2] = 5000 >> 8;
+ p[3] = 5000 & 0xff;
+ /* if a geometry hint is available, use it */
+ bdrv_get_geometry_hint(s->bdrv, &cylinders, &heads, &secs);
+ p[4] = heads & 0xff;
+ p[5] = secs & 0xff;
+ p[6] = s->cluster_size * 2;
+ p[8] = (cylinders >> 8) & 0xff;
+ p[9] = cylinders & 0xff;
+ /* Write precomp start cylinder, disabled */
+ p[10] = (cylinders >> 8) & 0xff;
+ p[11] = cylinders & 0xff;
+ /* Reduced current start cylinder, disabled */
+ p[12] = (cylinders >> 8) & 0xff;
+ p[13] = cylinders & 0xff;
+ /* Device step rate [100us], 100us */
+ p[14] = 0;
+ p[15] = 1;
+ /* Device step pulse width [us], 1us */
+ p[16] = 1;
+ /* Device head settle delay [100us], 100us */
+ p[17] = 0;
+ p[18] = 1;
+ /* Motor on delay [0.1s], 0.1s */
+ p[19] = 1;
+ /* Motor off delay [0.1s], 0.1s */
+ p[20] = 1;
+ /* Medium rotation rate [rpm], 5400 rpm */
+ p[28] = (5400 >> 8) & 0xff;
+ p[29] = 5400 & 0xff;
+ p += 0x1e;
+ } else if ((page == 8 || page == 0x3f)) {
/* Caching page. */
memset(p,0,20);
p[0] = 8;
reply other threads:[~2008-07-02 15:16 UTC|newest]
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