From 2adc99b277ab05877ef847bddde45346378f561a Mon Sep 17 00:00:00 2001
From: Markus Armbruster <armbru@redhat.com>
Date: Tue, 10 Jul 2012 11:12:53 +0200
Subject: 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>
---
 hw/pc.c | 19 ++++---------------
 1 file changed, 4 insertions(+), 15 deletions(-)

(limited to 'hw/pc.c')

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);
-- 
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