Commit 7dc59bdd authored by GuanXuetao's avatar GuanXuetao

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
......@@ -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__
......
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