[Qemu-devel] [PATCH 31/41] Relax IDE CHS limits from 16383, 16, 63 to 65535, 16, 255

[Kevin Wolf <kwolf@redhat.com>]

From: Markus Armbruster <armbru@redhat.com>

New limits straight from ATA4 6.2 Register delivered data transfer
command sector addressing.

I figure the old sector limit 63 was blindly copied from the BIOS
int 13 limit.  Doesn't apply to the hardware.  No idea where the old
cylinder limit comes from.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 hw/ide/core.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/hw/ide/core.c b/hw/ide/core.c
index 1ca7cdf..58a454f 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1935,16 +1935,16 @@ int ide_init_drive(IDEState *s, BlockDriverState *bs, IDEDriveKind kind,
     s->drive_kind = kind;
 
     bdrv_get_geometry(bs, &nb_sectors);
-    if (cylinders < 1 || cylinders > 16383) {
-        error_report("cyls must be between 1 and 16383");
+    if (cylinders < 1 || cylinders > 65535) {
+        error_report("cyls must be between 1 and 65535");
         return -1;
     }
     if (heads < 1 || heads > 16) {
         error_report("heads must be between 1 and 16");
         return -1;
     }
-    if (secs < 1 || secs > 63) {
-        error_report("secs must be between 1 and 63");
+    if (secs < 1 || secs > 255) {
+        error_report("secs must be between 1 and 255");
         return -1;
     }
     s->cylinders = cylinders;
-- 
1.7.6.5