#ifndef __ASM_AVR32_IO_H
#define __ASM_AVR32_IO_H
#include <linux/string.h>
#ifdef __KERNEL__
#include <asm/addrspace.h>
#include <asm/byteorder.h>
/* virt_to_phys will only work when address is in P1 or P2 */
static __inline__ unsigned long virt_to_phys(volatile void *address)
{
return PHYSADDR(address);
}
static __inline__ void * phys_to_virt(unsigned long address)
{
return (void *)P1SEGADDR(address);
}
#define cached_to_phys(addr) ((unsigned long)PHYSADDR(addr))
#define uncached_to_phys(addr) ((unsigned long)PHYSADDR(addr))
#define phys_to_cached(addr) ((void *)P1SEGADDR(addr))
#define phys_to_uncached(addr) ((void *)P2SEGADDR(addr))
/*
* Generic IO read/write. These perform native-endian accesses. Note
* that some architectures will want to re-define __raw_{read,write}w.
*/
extern void __raw_writesb(void __iomem *addr, const void *data, int bytelen);
extern void __raw_writesw(void __iomem *addr, const void *data, int wordlen);
extern void __raw_writesl(void __iomem *addr, const void *data, int longlen);
extern void __raw_readsb(const void __iomem *addr, void *data, int bytelen);
extern void __raw_readsw(const void __iomem *addr, void *data, int wordlen);
extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
static inline void writeb(unsigned char b, volatile void __iomem *addr)
{
*(volatile unsigned char __force *)addr = b;
}
static inline void writew(unsigned short b, volatile void __iomem *addr)
{
*(volatile unsigned short __force *)addr = b;
}
static inline void writel(unsigned int b, volatile void __iomem *addr)
{
*(volatile unsigned int __force *)addr = b;
}
#define __raw_writeb writeb
#define __raw_writew writew
#define __raw_writel writel
static inline unsigned char readb(const volatile void __iomem *addr)
{
return *(const volatile unsigned char __force *)addr;
}
static inline unsigned short readw(const volatile void __iomem *addr)
{
return *(const volatile unsigned short __force *)addr;
}
static inline unsigned int readl(const volatile void __iomem *addr)
{
return *(const volatile unsigned int __force *)addr;
}
#define __raw_readb readb
#define __raw_readw readw
#define __raw_readl readl
#define writesb(p, d, l) __raw_writesb((unsigned int)p, d, l)
#define writesw(p, d, l) __raw_writesw((unsigned int)p, d, l)
#define writesl(p, d, l) __raw_writesl((unsigned int)p, d, l)
#define readsb(p, d, l) __raw_readsb((unsigned int)p, d, l)
#define readsw(p, d, l) __raw_readsw((unsigned int)p, d, l)
#define readsl(p, d, l) __raw_readsl((unsigned int)p, d, l)
/*
* io{read,write}{8,16,32} macros in both le (for PCI style consumers) and native be
*/
#ifndef ioread8
#define ioread8(p) ({ unsigned int __v = __raw_readb(p); __v; })
#define ioread16(p) ({ unsigned int __v = le16_to_cpu(__raw_readw(p)); __v; })
#define ioread16be(p) ({ unsigned int __v = be16_to_cpu(__raw_readw(p)); __v; })
#define ioread32(p) ({ unsigned int __v = le32_to_cpu(__raw_readl(p)); __v; })
#define ioread32be(p) ({ unsigned int __v = be32_to_cpu(__raw_readl(p)); __v; })
#define iowrite8(v,p) __raw_writeb(v, p)
#define iowrite16(v,p) __raw_writew(cpu_to_le16(v), p)
#define iowrite16be(v,p) __raw_writew(cpu_to_be16(v), p)
#define iowrite32(v,p) __raw_writel(cpu_to_le32(v), p)
#define iowrite32be(v,p) __raw_writel(cpu_to_be32(v), p)
#define ioread8_rep(p,d,c) __raw_readsb(p,d,c)
#define ioread16_rep(p,d,c) __raw_readsw(p,d,c)
#define ioread32_rep(p,d,c) __raw_readsl(p,d,c)
#define iowrite8_rep(p,s,c) __raw_writesb(p,s,c)
#define iowrite16_rep(p,s,c) __raw_writesw(p,s,c)
#define iowrite32_rep(p,s,c) __raw_writesl(p,s,c)
#endif
/*
* These two are only here because ALSA _thinks_ it needs them...
*/
static inline void memcpy_fromio(void * to, const volatile void __iomem *from,
unsigned long count)
{
char *p = to;
while (count) {
count--;
*p = readb(from);
p++;
from++;
}
}
static inline void memcpy_toio(volatile void __iomem *to, const void * from,
unsigned long count)
{
const char *p = from;
while (count) {
count--;
writeb(*p, to);
p++;
to++;
}
}
static inline void memset_io(volatile void __iomem *addr, unsigned char val,
unsigned long count)
{
memset((void __force *)addr, val, count);
}
/*
* Bad read/write accesses...
*/
extern void __readwrite_bug(const char *fn);
#define IO_SPACE_LIMIT 0xffffffff
/* Convert I/O port address to virtual address */
#define __io(p) ((void __iomem *)phys_to_uncached(p))
/*
* IO port access primitives
* -------------------------
*
* The AVR32 doesn't have special IO access instructions; all IO is memory
* mapped. Note that these are defined to perform little endian accesses
* only. Their primary purpose is to access PCI and ISA peripherals.
*
* Note that for a big endian machine, this implies that the following
* big endian mode connectivity is in place.
*
* The machine specific io.h include defines __io to translate an "IO"
* address to a memory address.
*
* Note that we prevent GCC re-ordering or caching values in expressions
* by introducing sequence points into the in*() definitions. Note that
* __raw_* do not guarantee this behaviour.
*
* The {in,out}[bwl] macros are for emulating x86-style PCI/ISA IO space.
*/
#define outb(v, p) __raw_writeb(v, __io(p))
#define outw(v, p) __raw_writew(cpu_to_le16(v), __io(p))
#define outl(v, p) __raw_writel(cpu_to_le32(v), __io(p))
#define inb(p) __raw_readb(__io(p))
#define inw(p) le16_to_cpu(__raw_readw(__io(p)))
#define inl(p) le32_to_cpu(__raw_readl(__io(p)))
static inline void __outsb(unsigned long port, void *addr, unsigned int count)
{
while (count--) {
outb(*(u8 *)addr, port);
addr++;
}
}
static inline void __insb(unsigned long port, void *addr, unsigned int count)
{
while (count--) {
*(u8 *)addr = inb(port);
addr++;
}
}
static inline void __outsw(unsigned long port, void *addr, unsigned int count)
{
while (count--) {
outw(*(u16 *)addr, port);
addr += 2;
}
}
static inline void __insw(unsigned long port, void *addr, unsigned int count)
{
while (count--) {
*(u16 *)addr = inw(port);
addr += 2;
}
}
static inline void __outsl(unsigned long port, void *addr, unsigned int count)
{
while (count--) {
outl(*(u32 *)addr, port);
addr += 4;
}
}
static inline void __insl(unsigned long port, void *addr, unsigned int count)
{
while (count--) {
*(u32 *)addr = inl(port);
addr += 4;
}
}
#define outsb(port, addr, count) __outsb(port, addr, count)
#define insb(port, addr, count) __insb(port, addr, count)
#define outsw(port, addr, count) __outsw(port, addr, count)
#define insw(port, addr, count) __insw(port, addr, count)
#define outsl(port, addr, count) __outsl(port, addr, count)
#define insl(port, addr, count) __insl(port, addr, count)
extern void __iomem *__ioremap(unsigned long offset, size_t size,
unsigned long flags);
extern void __iounmap(void __iomem *addr);
/*
* ioremap - map bus memory into CPU space
* @offset bus address of the memory
* @size size of the resource to map
*
* ioremap performs a platform specific sequence of operations to make
* bus memory CPU accessible via the readb/.../writel functions and
* the other mmio helpers. The returned address is not guaranteed to
* be usable directly as a virtual address.
*/
#define ioremap(offset, size) \
__ioremap((offset), (size), 0)
#define ioremap_nocache(offset, size) \
__ioremap((offset), (size), 0)
#define iounmap(addr) \
__iounmap(addr)
#define cached(addr) P1SEGADDR(addr)
#define uncached(addr) P2SEGADDR(addr)
#define virt_to_bus virt_to_phys
#define bus_to_virt phys_to_virt
#define page_to_bus page_to_phys
#define bus_to_page phys_to_page
/*
* Create a virtual mapping cookie for an IO port range. There exists
* no such thing as port-based I/O on AVR32, so a regular ioremap()
* should do what we need.
*/
#define ioport_map(port, nr) ioremap(port, nr)
#define ioport_unmap(port) iounmap(port)
#define dma_cache_wback_inv(_start, _size) \
flush_dcache_region(_start, _size)
#define dma_cache_inv(_start, _size) \
invalidate_dcache_region(_start, _size)
#define dma_cache_wback(_start, _size) \
clean_dcache_region(_start, _size)
/*
* 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 /* __ASM_AVR32_IO_H */
