在 2020/7/21 下午10:17, Jiaxun Yang 写道:
It can be very big on LS7A PCH systems.
Signed-off-by: Jiaxun Yang <jiaxun.y...@flygoat.com>
---
arch/mips/include/asm/io.h | 3 ++-
arch/mips/include/asm/mach-loongson64/spaces.h | 3 +--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index 346fffd9e972..0072489325fa 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -50,8 +50,9 @@
# define __relaxed_ioswabq ioswabq
/* ioswab[bwlq], __mem_ioswab[bwlq] are defined in mangle-port.h */
-
+#ifndef IO_SPACE_LIMIT
#define IO_SPACE_LIMIT 0xffff
+#endif
/*
* On MIPS I/O ports are memory mapped, so we access them using normal
diff --git a/arch/mips/include/asm/mach-loongson64/spaces.h
b/arch/mips/include/asm/mach-loongson64/spaces.h
index 3de0ac9d8829..fa5ea4ee8b6c 100644
--- a/arch/mips/include/asm/mach-loongson64/spaces.h
+++ b/arch/mips/include/asm/mach-loongson64/spaces.h
@@ -11,8 +11,7 @@
#define PCI_IOSIZE SZ_16M
#define MAP_BASE (PCI_IOBASE + PCI_IOSIZE)
-/* Reserved at the start of PCI_IOBASE for legacy drivers */
-#define MMIO_LOWER_RESERVED 0x10000
+#define IO_SPACE_LIMIT PCI_IOSIZE
Oops, it should be (PCI_IOSIZE - 1), will fix in next revision.
Sorry for the noise.
Thanks.
- Jiaxun
#include <asm/mach-generic/spaces.h>
#endif
