Hi, Jiaxun, On Mon, Jul 20, 2020 at 3:45 PM Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> wrote: > > It can be very big on LS7A PCH systems. > > Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> > --- > 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..b99b43854929 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 0x00ffffff Maybe using 0xffffff is better? Huacai > > #include <asm/mach-generic/spaces.h> > #endif > -- > 2.28.0.rc1 >
