diff options
| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2020-05-27 21:17:21 +0800 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-05-28 09:38:18 +0200 |
| commit | 482cd90cd781c9b5607ed9c9f8641dc95a9d4cce (patch) | |
| tree | ddff5cf6346e5688e57561b664f96649f99c5f70 /arch/mips/include/asm/mach-loongson64/spaces.h | |
| parent | a202bf71f08b3ef15356db30535e30b03cf23aec (diff) | |
MIPS: Loongson64: Define PCI_IOBASE
PCI_IOBASE is used to create VM maps for PCI I/O ports, it is
required by generic PCI drivers to make memory mapped I/O range
work.
To deal with legacy drivers that have fixed I/O ports range we
reserved 0x10000 in PCI_IOBASE, should be enough for i8259 i8042
stuff.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/include/asm/mach-loongson64/spaces.h')
| -rw-r--r-- | arch/mips/include/asm/mach-loongson64/spaces.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-loongson64/spaces.h b/arch/mips/include/asm/mach-loongson64/spaces.h index e85bc1d9c4f2..3de0ac9d8829 100644 --- a/arch/mips/include/asm/mach-loongson64/spaces.h +++ b/arch/mips/include/asm/mach-loongson64/spaces.h @@ -6,5 +6,13 @@ #define CAC_BASE _AC(0x9800000000000000, UL) #endif /* CONFIG_64BIT */ +/* Skip 128k to trap NULL pointer dereferences */ +#define PCI_IOBASE _AC(0xc000000000000000 + SZ_128K, UL) +#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 + #include <asm/mach-generic/spaces.h> #endif |