Commit 7dc59bdd authored by GuanXuetao's avatar GuanXuetao
Browse files

asm-generic: fix inX/outX functions for architectures that have PCI 



The definitions for the PC-style PIO functions in asm-generic/io.h were
meant as dummies so you could compile code on architectures without
ISA and PCI buses. However, unicore32 actually wants to use them
with a real PCI bus, so they need to be defined to actually address
the register window holding the I/O ports.

Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 521cb40b

include/asm-generic/io.h

+19 −14
Original line number Diff line number Diff line
@@ -94,6 +94,10 @@ static inline void __raw_writeq(u64 b, volatile void __iomem *addr) 
#define writeq(b,addr) __raw_writeq(__cpu_to_le64(b),addr)

#endif



#ifndef PCI_IOBASE

#define PCI_IOBASE ((void __iomem *) 0)

#endif



/*****************************************************************************/

/*

 * traditional input/output functions
@@ -101,32 +105,32 @@ static inline void __raw_writeq(u64 b, volatile void __iomem *addr) 


static inline u8 inb(unsigned long addr)

{

	return readb((volatile void __iomem *) addr);

	return readb(addr + PCI_IOBASE);

}



static inline u16 inw(unsigned long addr)

{

	return readw((volatile void __iomem *) addr);

	return readw(addr + PCI_IOBASE);

}



static inline u32 inl(unsigned long addr)

{

	return readl((volatile void __iomem *) addr);

	return readl(addr + PCI_IOBASE);

}



static inline void outb(u8 b, unsigned long addr)

{

	writeb(b, (volatile void __iomem *) addr);

	writeb(b, addr + PCI_IOBASE);

}



static inline void outw(u16 b, unsigned long addr)

{

	writew(b, (volatile void __iomem *) addr);

	writew(b, addr + PCI_IOBASE);

}



static inline void outl(u32 b, unsigned long addr)

{

	writel(b, (volatile void __iomem *) addr);

	writel(b, addr + PCI_IOBASE);

}



#define inb_p(addr)	inb(addr)
@@ -213,32 +217,32 @@ static inline void outsl(unsigned long addr, const void *buffer, int count) 


static inline void readsl(const void __iomem *addr, void *buf, int len)

{

	insl((unsigned long)addr, buf, len);

	insl(addr - PCI_IOBASE, buf, len);

}



static inline void readsw(const void __iomem *addr, void *buf, int len)

{

	insw((unsigned long)addr, buf, len);

	insw(addr - PCI_IOBASE, buf, len);

}



static inline void readsb(const void __iomem *addr, void *buf, int len)

{

	insb((unsigned long)addr, buf, len);

	insb(addr - PCI_IOBASE, buf, len);

}



static inline void writesl(const void __iomem *addr, const void *buf, int len)

{

	outsl((unsigned long)addr, buf, len);

	outsl(addr - PCI_IOBASE, buf, len);

}



static inline void writesw(const void __iomem *addr, const void *buf, int len)

{

	outsw((unsigned long)addr, buf, len);

	outsw(addr - PCI_IOBASE, buf, len);

}



static inline void writesb(const void __iomem *addr, const void *buf, int len)

{

	outsb((unsigned long)addr, buf, len);

	outsb(addr - PCI_IOBASE, buf, len);

}



#ifndef CONFIG_GENERIC_IOMAP
@@ -269,8 +273,9 @@ static inline void writesb(const void __iomem *addr, const void *buf, int len) 
	outsl((unsigned long) (p), (src), (count))

#endif /* CONFIG_GENERIC_IOMAP */





#define IO_SPACE_LIMIT 0xffffffff

#ifndef IO_SPACE_LIMIT

#define IO_SPACE_LIMIT 0xffff

#endif



#ifdef __KERNEL__

CRA Git | Maintained and supported by SUSTech CRA and CCSE