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[Qemu-devel] [PATCH 1/2] vga: fix bochs alignment issue
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PATCH 1/2] vga: fix bochs alignment issue |
Date: |
Wed, 21 Nov 2012 14:48:54 +0100 |
The bochs dispi interface traditionally uses port 0x1ce as 16bit index
register and port 0x1cf as 16bit data register. The later is unaligned,
and probably for that reason the the data register was moved to 0x1d0
for non-x86 archs.
This patch makes the data register available at 0x1d0 on x86 too. The
old x86 location is kept for compatibility reasons, so both 0x1cf and
0x1d0 can be used as data register on x86.
Signed-off-by: Gerd Hoffmann <address@hidden>
---
docs/specs/standard-vga.txt | 3 ++-
hw/vga.c | 3 +--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/docs/specs/standard-vga.txt b/docs/specs/standard-vga.txt
index 1cecccd..8a4c1e9 100644
--- a/docs/specs/standard-vga.txt
+++ b/docs/specs/standard-vga.txt
@@ -36,7 +36,8 @@ IO ports used
03c0 - 03df : standard vga ports
01ce : bochs vbe interface index port
-01cf : bochs vbe interface data port
+01cf : bochs vbe interface data port (x86 only)
+01d0 : bochs vbe interface data port
Memory regions used
diff --git a/hw/vga.c b/hw/vga.c
index 81aa76b..2b0200a 100644
--- a/hw/vga.c
+++ b/hw/vga.c
@@ -2321,9 +2321,8 @@ static const MemoryRegionPortio vbe_portio_list[] = {
{ 0, 1, 2, .read = vbe_ioport_read_index, .write = vbe_ioport_write_index
},
# ifdef TARGET_I386
{ 1, 1, 2, .read = vbe_ioport_read_data, .write = vbe_ioport_write_data },
-# else
- { 2, 1, 2, .read = vbe_ioport_read_data, .write = vbe_ioport_write_data },
# endif
+ { 2, 1, 2, .read = vbe_ioport_read_data, .write = vbe_ioport_write_data },
PORTIO_END_OF_LIST(),
};
--
1.7.1
- [Qemu-devel] [PULL for-1.3 0/2] spice patch queue, Gerd Hoffmann, 2012/11/21
- [Qemu-devel] [PATCH 2/2] vga: fix mmio vga register mapping, Gerd Hoffmann, 2012/11/21
- [Qemu-devel] [PATCH 1/2] vga: fix bochs alignment issue,
Gerd Hoffmann <=
- [Qemu-devel] [PATCH 1/2] Fix the inconsistency in x509-dh-key-file parameter, Gerd Hoffmann, 2012/11/21
- [Qemu-devel] [PATCH 2/2] spice: add new spice-server callbacks to ui/spice-display.c, Gerd Hoffmann, 2012/11/21
- Re: [Qemu-devel] [PULL for-1.3 0/2] spice patch queue, Gerd Hoffmann, 2012/11/21
- Re: [Qemu-devel] [PULL for-1.3 0/2] spice patch queue, Anthony Liguori, 2012/11/26