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| author |   Jay Estabrook <jay.estabrook@hp.com> | 2007-06-01 00:47:03 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-06-01 08:18:29 -0700 |
| commit | 025a22151c41890e5d30a1d4fb84c547b84d7671 (patch) | |
| tree | 9effd8ca9ceed994a03d252d4a1d28fa07ae93a1 /arch/alpha/kernel/sys_dp264.c | |
| parent | h8300 trival patches (diff) | |
| download | linux-dev-025a22151c41890e5d30a1d4fb84c547b84d7671.tar.xz linux-dev-025a22151c41890e5d30a1d4fb84c547b84d7671.zip | |
ALPHA: support graphics on non-zero PCI domains
This code replaces earlier and incomplete handling of graphics on non-zero PCI
domains (aka hoses or peer PCI buses).
An option (CONFIG_VGA_HOSE) is set TRUE if configuring a GENERIC kernel, or a
kernel for MARVEL, TITAN, or TSUNAMI machines, as these are the machines whose
SRM consoles are capable of configuring and handling graphics options on
non-zero hoses. All other machines have the option set FALSE.
A routine, "find_console_vga_hose()", is used to find the graphics device
which the machine's firmware believes is the console device, and it sets a
global (pci_vga_hose) for later use in managing access to the device. This is
called in "init_arch" on TITAN and TSUNAMI machines; MARVEL machines use a
custom version of this routine because of extra complexity.
A routine, "locate_and_init_vga()", is used to find the graphics device and
set a global (pci_vga_hose) for later use in managing access to the device, in
the case where "find_console_vga_hose" has failed.
Various adjustments are made to the ioremap and ioportmap routines for
detecting and translating "legacy" VGA register and memory references to the
real PCI domain.
[akpm@linux-foundation.org: don't statically init bss]
[akpm@linux-foundation.org: build fix]
Signed-off-by: Jay Estabrook <jay.estabrook@hp.com>
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha/kernel/sys_dp264.c')
| -rw-r--r-- | arch/alpha/kernel/sys_dp264.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/alpha/kernel/sys_dp264.c b/arch/alpha/kernel/sys_dp264.c index 85d2f933dd07..c71b0fd7a61f 100644 --- a/arch/alpha/kernel/sys_dp264.c +++ b/arch/alpha/kernel/sys_dp264.c @@ -543,6 +543,7 @@ dp264_init_pci(void) { common_init_pci(); SMC669_Init(0); + locate_and_init_vga(NULL); } static void __init @@ -551,6 +552,14 @@ monet_init_pci(void) common_init_pci(); SMC669_Init(1); es1888_init(); + locate_and_init_vga(NULL); +} + +static void __init +clipper_init_pci(void) +{ + common_init_pci(); + locate_and_init_vga(NULL); } static void __init @@ -655,7 +664,7 @@ struct alpha_machine_vector clipper_mv __initmv = { .init_arch = tsunami_init_arch, .init_irq = clipper_init_irq, .init_rtc = common_init_rtc, - .init_pci = common_init_pci, + .init_pci = clipper_init_pci, .kill_arch = tsunami_kill_arch, .pci_map_irq = clipper_map_irq, .pci_swizzle = common_swizzle, |