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io: change inX() to have their own IO barrier overrides

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Open code readX() inside inX() so that inX() variants have their own
overrideable Port IO barrier combinations as __io_pbr() and __io_par() for
actions to be taken before port IO and after port IO read.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Sinan Kaya 2018-04-05 09:09:13 -04:00 committed by Arnd Bergmann
parent a7851aa54c
commit 87fe2d543f
1 changed files with 18 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

21
include/asm-generic/io.h
View file

@ -433,7 +433,12 @@ static inline void writesq(volatile void __iomem *addr, const void *buffer,
#define inb inb
static inline u8 inb(unsigned long addr)
{
return readb(PCI_IOBASE + addr);
u8 val;
__io_pbr();
val = __raw_readb(PCI_IOBASE + addr);
__io_par();
return val;
}
#endif
@ -441,7 +446,12 @@ static inline u8 inb(unsigned long addr)
#define inw inw
static inline u16 inw(unsigned long addr)
{
return readw(PCI_IOBASE + addr);
u16 val;
__io_pbr();
val = __le16_to_cpu(__raw_readw(PCI_IOBASE + addr));
__io_par();
return val;
}
#endif
@ -449,7 +459,12 @@ static inline u16 inw(unsigned long addr)
#define inl inl
static inline u32 inl(unsigned long addr)
{
return readl(PCI_IOBASE + addr);
u32 val;
__io_pbr();
val = __le32_to_cpu(__raw_readl(PCI_IOBASE + addr));
__io_par();
return val;
}
#endif