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| author | Wolfram Sang <wsa@kernel.org> | 2022-09-16 20:42:18 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2022-09-16 20:42:18 +0100 |
| commit | d819524d3144f4703f45f473fdc85ad7579ae94c (patch) | |
| tree | 9bcb29b9b1a24ecf5a1a367c1af7d9be138ba041 /arch/loongarch/include/asm/addrspace.h | |
| parent | 859d64685d6c868db62b86064769b053db8bf834 (diff) | |
| parent | 80e78fcce86de0288793a0ef0f6acf37656ee4cf (diff) | |
Merge tag 'v6.0-rc5' into i2c/for-mergewindow
Linux 6.0-rc5
Diffstat (limited to 'arch/loongarch/include/asm/addrspace.h')
| -rw-r--r-- | arch/loongarch/include/asm/addrspace.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/addrspace.h b/arch/loongarch/include/asm/addrspace.h index b91e0733b2e5..d342935e5a72 100644 --- a/arch/loongarch/include/asm/addrspace.h +++ b/arch/loongarch/include/asm/addrspace.h @@ -109,4 +109,20 @@ extern unsigned long vm_map_base; */ #define PHYSADDR(a) ((_ACAST64_(a)) & TO_PHYS_MASK) +/* + * On LoongArch, I/O ports mappring is following: + * + * | .... | + * |-----------------------| + * | pci io ports(16K~32M) | + * |-----------------------| + * | isa io ports(0 ~16K) | + * PCI_IOBASE ->|-----------------------| + * | .... | + */ +#define PCI_IOBASE ((void __iomem *)(vm_map_base + (2 * PAGE_SIZE))) +#define PCI_IOSIZE SZ_32M +#define ISA_IOSIZE SZ_16K +#define IO_SPACE_LIMIT (PCI_IOSIZE - 1) + #endif /* _ASM_ADDRSPACE_H */ |