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authorJiaxun Yang <jiaxun.yang@flygoat.com>2020-07-28 17:36:57 +0200
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2020-07-28 22:49:53 +0200
commit21a379a8cf917e4c45a3c50d8203859ea318c450 (patch)
treef923dae7e6f3f0cb110a5f86937290b0064fe42f /arch/mips/include
parentMIPS: Loongson64: Process ISA Node in DeviceTree (diff)
downloadlinux-21a379a8cf917e4c45a3c50d8203859ea318c450.tar.xz
linux-21a379a8cf917e4c45a3c50d8203859ea318c450.zip
MIPS: Loongson64: Enlarge IO_SPACE_LIMIT
It can be very big on LS7A PCH systems. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/include')
-rw-r--r--arch/mips/include/asm/io.h2
-rw-r--r--arch/mips/include/asm/mach-generic/spaces.h4
-rw-r--r--arch/mips/include/asm/mach-loongson64/spaces.h3
3 files changed, 5 insertions, 4 deletions
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index 3ecbe9643f60..78537aa23500 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -51,8 +51,6 @@
/* ioswab[bwlq], __mem_ioswab[bwlq] are defined in mangle-port.h */
-#define IO_SPACE_LIMIT 0xffff
-
/*
* On MIPS I/O ports are memory mapped, so we access them using normal
* load/store instructions. mips_io_port_base is the virtual address to
diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h
index ee5ebe98f6cf..c3ac06a6acd2 100644
--- a/arch/mips/include/asm/mach-generic/spaces.h
+++ b/arch/mips/include/asm/mach-generic/spaces.h
@@ -14,6 +14,10 @@
#include <asm/mipsregs.h>
+#ifndef IO_SPACE_LIMIT
+#define IO_SPACE_LIMIT 0xffff
+#endif
+
/*
* This gives the physical RAM offset.
*/
diff --git a/arch/mips/include/asm/mach-loongson64/spaces.h b/arch/mips/include/asm/mach-loongson64/spaces.h
index 3de0ac9d8829..ce04e998a37b 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 - 1)
#include <asm/mach-generic/spaces.h>
#endif