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x86, uv: Update UV arch to target Legacy VGA I/O correctly.

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Add function to direct Legacy VGA I/O traffic to correct I/O Hub.

Signed-off-by: Mike Travis <travis@sgi.com>
LKML-Reference: <201002022238.o12McEbi018727@imap1.linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Robin Holt <holt@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Mike Travis
2010-02-02 14:38:14 -08:00
committed by H. Peter Anvin
parent 95a8b6efc5
commit 841582ea9e
3 changed files with 52 additions and 1 deletions
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4
arch/x86/include/asm/uv/bios.h
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@@ -36,7 +36,8 @@ enum uv_bios_cmd {
UV_BIOS_WATCHLIST_ALLOC,
UV_BIOS_WATCHLIST_FREE,
UV_BIOS_MEMPROTECT,
UV_BIOS_GET_PARTITION_ADDR
UV_BIOS_GET_PARTITION_ADDR,
UV_BIOS_SET_LEGACY_VGA_TARGET
};
/*
@@ -96,6 +97,7 @@ extern int uv_bios_mq_watchlist_alloc(unsigned long, unsigned int,
extern int uv_bios_mq_watchlist_free(int, int);
extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect);
extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *);
extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus);
extern void uv_bios_init(void);