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| author | Artur Rojek <contact@artur-rojek.eu> | 2024-05-11 21:16:14 +0200 |
|---|---|---|
| committer | John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> | 2024-05-13 09:13:26 +0200 |
| commit | 10c88ca5c9aeb51f2608507ca259f8b1176a4723 (patch) | |
| tree | af3b4576a36bf97d8db7c6be3498f6c28246a8c3 /arch/sh/boards | |
| parent | 21b8651502d5989576f9ca4849f40ff3bf1271ff (diff) | |
| download | linux-10c88ca5c9aeb51f2608507ca259f8b1176a4723.tar.gz linux-10c88ca5c9aeb51f2608507ca259f8b1176a4723.tar.bz2 linux-10c88ca5c9aeb51f2608507ca259f8b1176a4723.zip | |
sh: dreamcast: Fix GAPS PCI bridge addressing
The G2-to-PCI bridge chip found in SEGA Dreamcast assumes P2 area
relative addresses.
Set the appropriate IOPORT base offset.
Tested-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20240511191614.68561-2-contact@artur-rojek.eu
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Diffstat (limited to 'arch/sh/boards')
| -rw-r--r-- | arch/sh/boards/mach-dreamcast/setup.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-dreamcast/setup.c b/arch/sh/boards/mach-dreamcast/setup.c index 2d966c1c2cc1..daa8455549fa 100644 --- a/arch/sh/boards/mach-dreamcast/setup.c +++ b/arch/sh/boards/mach-dreamcast/setup.c @@ -25,10 +25,13 @@ #include <asm/irq.h> #include <asm/rtc.h> #include <asm/machvec.h> +#include <cpu/addrspace.h> #include <mach/sysasic.h> static void __init dreamcast_setup(char **cmdline_p) { + /* GAPS PCI bridge assumes P2 area relative addresses. */ + __set_io_port_base(P2SEG); } static struct sh_machine_vector mv_dreamcast __initmv = { |