243 lines
6.6 KiB
C
243 lines
6.6 KiB
C
#ifndef _BFIN_IO_H
|
|
#define _BFIN_IO_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <linux/types.h>
|
|
#endif
|
|
#include <linux/compiler.h>
|
|
|
|
/*
|
|
* These are for ISA/PCI shared memory _only_ and should never be used
|
|
* on any other type of memory, including Zorro memory. They are meant to
|
|
* access the bus in the bus byte order which is little-endian!.
|
|
*
|
|
* readX/writeX() are used to access memory mapped devices. On some
|
|
* architectures the memory mapped IO stuff needs to be accessed
|
|
* differently. On the bfin architecture, we just read/write the
|
|
* memory location directly.
|
|
*/
|
|
#ifndef __ASSEMBLY__
|
|
|
|
static inline unsigned char readb(const volatile void __iomem *addr)
|
|
{
|
|
unsigned int val;
|
|
int tmp;
|
|
|
|
__asm__ __volatile__ ("cli %1;\n\t"
|
|
"NOP; NOP; SSYNC;\n\t"
|
|
"%0 = b [%2] (z);\n\t"
|
|
"sti %1;\n\t"
|
|
: "=d"(val), "=d"(tmp): "a"(addr)
|
|
);
|
|
|
|
return (unsigned char) val;
|
|
}
|
|
|
|
static inline unsigned short readw(const volatile void __iomem *addr)
|
|
{
|
|
unsigned int val;
|
|
int tmp;
|
|
|
|
__asm__ __volatile__ ("cli %1;\n\t"
|
|
"NOP; NOP; SSYNC;\n\t"
|
|
"%0 = w [%2] (z);\n\t"
|
|
"sti %1;\n\t"
|
|
: "=d"(val), "=d"(tmp): "a"(addr)
|
|
);
|
|
|
|
return (unsigned short) val;
|
|
}
|
|
|
|
static inline unsigned int readl(const volatile void __iomem *addr)
|
|
{
|
|
unsigned int val;
|
|
int tmp;
|
|
|
|
__asm__ __volatile__ ("cli %1;\n\t"
|
|
"NOP; NOP; SSYNC;\n\t"
|
|
"%0 = [%2];\n\t"
|
|
"sti %1;\n\t"
|
|
: "=d"(val), "=d"(tmp): "a"(addr)
|
|
);
|
|
return val;
|
|
}
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#define writeb(b,addr) (void)((*(volatile unsigned char *) (addr)) = (b))
|
|
#define writew(b,addr) (void)((*(volatile unsigned short *) (addr)) = (b))
|
|
#define writel(b,addr) (void)((*(volatile unsigned int *) (addr)) = (b))
|
|
|
|
#define __raw_readb readb
|
|
#define __raw_readw readw
|
|
#define __raw_readl readl
|
|
#define __raw_writeb writeb
|
|
#define __raw_writew writew
|
|
#define __raw_writel writel
|
|
#define memset_io(a,b,c) memset((void *)(a),(b),(c))
|
|
#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
|
|
#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
|
|
|
|
#define inb(addr) readb(addr)
|
|
#define inw(addr) readw(addr)
|
|
#define inl(addr) readl(addr)
|
|
#define outb(x,addr) ((void) writeb(x,addr))
|
|
#define outw(x,addr) ((void) writew(x,addr))
|
|
#define outl(x,addr) ((void) writel(x,addr))
|
|
|
|
#define inb_p(addr) inb(addr)
|
|
#define inw_p(addr) inw(addr)
|
|
#define inl_p(addr) inl(addr)
|
|
#define outb_p(x,addr) outb(x,addr)
|
|
#define outw_p(x,addr) outw(x,addr)
|
|
#define outl_p(x,addr) outl(x,addr)
|
|
|
|
#define ioread8_rep(a,d,c) insb(a,d,c)
|
|
#define ioread16_rep(a,d,c) insw(a,d,c)
|
|
#define ioread32_rep(a,d,c) insl(a,d,c)
|
|
#define iowrite8_rep(a,s,c) outsb(a,s,c)
|
|
#define iowrite16_rep(a,s,c) outsw(a,s,c)
|
|
#define iowrite32_rep(a,s,c) outsl(a,s,c)
|
|
|
|
#define ioread8(X) readb(X)
|
|
#define ioread16(X) readw(X)
|
|
#define ioread32(X) readl(X)
|
|
#define iowrite8(val,X) writeb(val,X)
|
|
#define iowrite16(val,X) writew(val,X)
|
|
#define iowrite32(val,X) writel(val,X)
|
|
|
|
#define IO_SPACE_LIMIT 0xffffffff
|
|
|
|
/* Values for nocacheflag and cmode */
|
|
#define IOMAP_NOCACHE_SER 1
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
extern void outsb(unsigned long port, const void *addr, unsigned long count);
|
|
extern void outsw(unsigned long port, const void *addr, unsigned long count);
|
|
extern void outsw_8(unsigned long port, const void *addr, unsigned long count);
|
|
extern void outsl(unsigned long port, const void *addr, unsigned long count);
|
|
|
|
extern void insb(unsigned long port, void *addr, unsigned long count);
|
|
extern void insw(unsigned long port, void *addr, unsigned long count);
|
|
extern void insw_8(unsigned long port, void *addr, unsigned long count);
|
|
extern void insl(unsigned long port, void *addr, unsigned long count);
|
|
extern void insl_16(unsigned long port, void *addr, unsigned long count);
|
|
|
|
extern void dma_outsb(unsigned long port, const void *addr, unsigned short count);
|
|
extern void dma_outsw(unsigned long port, const void *addr, unsigned short count);
|
|
extern void dma_outsl(unsigned long port, const void *addr, unsigned short count);
|
|
|
|
extern void dma_insb(unsigned long port, void *addr, unsigned short count);
|
|
extern void dma_insw(unsigned long port, void *addr, unsigned short count);
|
|
extern void dma_insl(unsigned long port, void *addr, unsigned short count);
|
|
|
|
static inline void readsl(const void __iomem *addr, void *buf, int len)
|
|
{
|
|
insl((unsigned long)addr, buf, len);
|
|
}
|
|
|
|
static inline void readsw(const void __iomem *addr, void *buf, int len)
|
|
{
|
|
insw((unsigned long)addr, buf, len);
|
|
}
|
|
|
|
static inline void readsb(const void __iomem *addr, void *buf, int len)
|
|
{
|
|
insb((unsigned long)addr, buf, len);
|
|
}
|
|
|
|
static inline void writesl(const void __iomem *addr, const void *buf, int len)
|
|
{
|
|
outsl((unsigned long)addr, buf, len);
|
|
}
|
|
|
|
static inline void writesw(const void __iomem *addr, const void *buf, int len)
|
|
{
|
|
outsw((unsigned long)addr, buf, len);
|
|
}
|
|
|
|
static inline void writesb(const void __iomem *addr, const void *buf, int len)
|
|
{
|
|
outsb((unsigned long)addr, buf, len);
|
|
}
|
|
|
|
/*
|
|
* Map some physical address range into the kernel address space.
|
|
*/
|
|
static inline void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
|
|
int cacheflag)
|
|
{
|
|
return (void __iomem *)physaddr;
|
|
}
|
|
|
|
/*
|
|
* Unmap a ioremap()ed region again
|
|
*/
|
|
static inline void iounmap(void *addr)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* __iounmap unmaps nearly everything, so be careful
|
|
* it doesn't free currently pointer/page tables anymore but it
|
|
* wans't used anyway and might be added later.
|
|
*/
|
|
static inline void __iounmap(void *addr, unsigned long size)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* Set new cache mode for some kernel address space.
|
|
* The caller must push data for that range itself, if such data may already
|
|
* be in the cache.
|
|
*/
|
|
static inline void kernel_set_cachemode(void *addr, unsigned long size,
|
|
int cmode)
|
|
{
|
|
}
|
|
|
|
static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
|
|
{
|
|
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
|
|
}
|
|
static inline void __iomem *ioremap_nocache(unsigned long physaddr,
|
|
unsigned long size)
|
|
{
|
|
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
|
|
}
|
|
|
|
extern void blkfin_inv_cache_all(void);
|
|
|
|
#endif
|
|
|
|
#define ioport_map(port, nr) ((void __iomem*)(port))
|
|
#define ioport_unmap(addr)
|
|
|
|
/* Pages to physical address... */
|
|
#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
|
|
#define page_to_bus(page) ((page - mem_map) << PAGE_SHIFT)
|
|
|
|
#define phys_to_virt(vaddr) ((void *) (vaddr))
|
|
#define virt_to_phys(vaddr) ((unsigned long) (vaddr))
|
|
|
|
#define virt_to_bus virt_to_phys
|
|
#define bus_to_virt phys_to_virt
|
|
|
|
/*
|
|
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
|
|
* access
|
|
*/
|
|
#define xlate_dev_mem_ptr(p) __va(p)
|
|
|
|
/*
|
|
* Convert a virtual cached pointer to an uncached pointer
|
|
*/
|
|
#define xlate_dev_kmem_ptr(p) p
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _BFIN_IO_H */
|