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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/Kconfig | |
| parent | 8778beb981b7e5df3472b05475e4c7905dad1f3d (diff) | |
| download | lwn-025a22151c41890e5d30a1d4fb84c547b84d7671.tar.gz lwn-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/Kconfig')
| -rw-r--r-- | arch/alpha/Kconfig | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 770f717bd250..905e86408aaa 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -481,6 +481,15 @@ config ALPHA_BROKEN_IRQ_MASK depends on ALPHA_GENERIC || ALPHA_PC164 default y +config VGA_HOSE + bool + depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI + default y + help + Support VGA on an arbitrary hose; needed for several platforms + which always have multiple hoses, and whose consoles support it. + + config ALPHA_SRM bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL @@ -644,6 +653,13 @@ source "arch/alpha/oprofile/Kconfig" source "arch/alpha/Kconfig.debug" +# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig +# but we also need it if VGA_HOSE is set +config DUMMY_CONSOLE + bool + depends on VGA_HOSE + default y + source "security/Kconfig" source "crypto/Kconfig" |