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authorMarkus Armbruster <armbru@redhat.com>2012-07-10 11:12:53 +0200
committerKevin Wolf <kwolf@redhat.com>2012-07-17 16:48:32 +0200
commit2adc99b277ab05877ef847bddde45346378f561a (patch)
treeda0313df8aa57f7ec78584464783689f7a6dae71
parent4e4e6e319b5508289da0f2966f63c841c832b847 (diff)
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hd-geometry: Compute BIOS CHS translation in one place
Currently, it is split between hd_geometry_guess() and pc_cmos_init_late(). Confusing. info qtree shows the result of the former. Also confusing. Fold the part done in pc_cmos_init_late() into hd_geometry_guess(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
-rw-r--r--hw/block-common.h1
-rw-r--r--hw/hd-geometry.c9
-rw-r--r--hw/ide/core.c2
-rw-r--r--hw/ide/qdev.c3
-rw-r--r--hw/pc.c19
5 files changed, 18 insertions, 16 deletions
diff --git a/hw/block-common.h b/hw/block-common.h
index ec7810d..31e12ba 100644
--- a/hw/block-common.h
+++ b/hw/block-common.h
@@ -24,5 +24,6 @@
void hd_geometry_guess(BlockDriverState *bs,
uint32_t *pcyls, uint32_t *pheads, uint32_t *psecs,
int *ptrans);
+int hd_bios_chs_auto_trans(uint32_t cyls, uint32_t heads, uint32_t secs);
#endif
diff --git a/hw/hd-geometry.c b/hw/hd-geometry.c
index 74678a6..1cdb9fb 100644
--- a/hw/hd-geometry.c
+++ b/hw/hd-geometry.c
@@ -125,7 +125,7 @@ void hd_geometry_guess(BlockDriverState *bs,
if (guess_disk_lchs(bs, &cylinders, &heads, &secs) < 0) {
/* no LCHS guess: use a standard physical disk geometry */
guess_chs_for_size(bs, pcyls, pheads, psecs);
- translation = BIOS_ATA_TRANSLATION_AUTO;
+ translation = hd_bios_chs_auto_trans(*pcyls, *pheads, *psecs);
} else if (heads > 16) {
/* LCHS guess with heads > 16 means that a BIOS LBA
translation was active, so a standard physical disk
@@ -148,3 +148,10 @@ void hd_geometry_guess(BlockDriverState *bs,
}
trace_hd_geometry_guess(bs, *pcyls, *pheads, *psecs, translation);
}
+
+int hd_bios_chs_auto_trans(uint32_t cyls, uint32_t heads, uint32_t secs)
+{
+ return cyls <= 1024 && heads <= 16 && secs <= 63
+ ? BIOS_ATA_TRANSLATION_NONE
+ : BIOS_ATA_TRANSLATION_LBA;
+}
diff --git a/hw/ide/core.c b/hw/ide/core.c
index bf1ce89..1ca7cdf 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -2091,6 +2091,8 @@ void ide_init2_with_non_qdev_drives(IDEBus *bus, DriveInfo *hd0,
trans = dinfo->trans;
if (!cyls && !heads && !secs) {
hd_geometry_guess(dinfo->bdrv, &cyls, &heads, &secs, &trans);
+ } else if (trans == BIOS_ATA_TRANSLATION_AUTO) {
+ trans = hd_bios_chs_auto_trans(cyls, heads, secs);
}
if (ide_init_drive(&bus->ifs[i], dinfo->bdrv,
dinfo->media_cd ? IDE_CD : IDE_HD, NULL,
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index 84097fd..de9db3b 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -171,6 +171,9 @@ static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
hd_geometry_guess(dev->conf.bs,
&dev->conf.cyls, &dev->conf.heads, &dev->conf.secs,
&dev->chs_trans);
+ } else if (dev->chs_trans == BIOS_ATA_TRANSLATION_AUTO) {
+ dev->chs_trans = hd_bios_chs_auto_trans(dev->conf.cyls,
+ dev->conf.heads, dev->conf.secs);
}
if (ide_init_drive(s, dev->conf.bs, kind,
diff --git a/hw/pc.c b/hw/pc.c
index 77b12b4..598267a 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -290,7 +290,7 @@ static void pc_cmos_init_late(void *opaque)
int16_t cylinders;
int8_t heads, sectors;
int val;
- int i;
+ int i, trans;
val = 0;
if (ide_get_geometry(arg->idebus[0], 0,
@@ -313,20 +313,9 @@ static void pc_cmos_init_late(void *opaque)
geometry can be different if a translation is done. */
if (ide_get_geometry(arg->idebus[i / 2], i % 2,
&cylinders, &heads, &sectors) >= 0) {
- int translation = ide_get_bios_chs_trans(arg->idebus[i / 2],
- i % 2);
- if (translation == BIOS_ATA_TRANSLATION_AUTO) {
- if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
- /* No translation. */
- translation = 0;
- } else {
- /* LBA translation. */
- translation = 1;
- }
- } else {
- translation--;
- }
- val |= translation << (i * 2);
+ trans = ide_get_bios_chs_trans(arg->idebus[i / 2], i % 2) - 1;
+ assert((trans & ~3) == 0);
+ val |= trans << (i * 2);
}
}
rtc_set_memory(s, 0x39, val);