diff options
Diffstat (limited to 'include/asm-ia64/io.h')
| -rw-r--r-- | include/asm-ia64/io.h | 142 |
1 files changed, 89 insertions, 53 deletions
diff --git a/include/asm-ia64/io.h b/include/asm-ia64/io.h index 3dcc496fa..4ab52f448 100644 --- a/include/asm-ia64/io.h +++ b/include/asm-ia64/io.h @@ -29,6 +29,7 @@ # ifdef __KERNEL__ +#include <asm/machvec.h> #include <asm/page.h> #include <asm/system.h> @@ -54,8 +55,7 @@ phys_to_virt(unsigned long address) #define bus_to_virt phys_to_virt #define virt_to_bus virt_to_phys -# else /* !KERNEL */ -# endif /* !KERNEL */ +# endif /* KERNEL */ /* * Memory fence w/accept. This should never be used in code that is @@ -100,7 +100,7 @@ __ia64_mk_io_addr (unsigned long port) */ static inline unsigned int -__inb (unsigned long port) +__ia64_inb (unsigned long port) { volatile unsigned char *addr = __ia64_mk_io_addr(port); unsigned char ret; @@ -111,7 +111,7 @@ __inb (unsigned long port) } static inline unsigned int -__inw (unsigned long port) +__ia64_inw (unsigned long port) { volatile unsigned short *addr = __ia64_mk_io_addr(port); unsigned short ret; @@ -122,7 +122,7 @@ __inw (unsigned long port) } static inline unsigned int -__inl (unsigned long port) +__ia64_inl (unsigned long port) { volatile unsigned int *addr = __ia64_mk_io_addr(port); unsigned int ret; @@ -133,113 +133,149 @@ __inl (unsigned long port) } static inline void -__insb (unsigned long port, void *dst, unsigned long count) +__ia64_outb (unsigned char val, unsigned long port) { volatile unsigned char *addr = __ia64_mk_io_addr(port); - unsigned char *dp = dst; + *addr = val; __ia64_mf_a(); - while (count--) { - *dp++ = *addr; - } - __ia64_mf_a(); - return; } static inline void -__insw (unsigned long port, void *dst, unsigned long count) +__ia64_outw (unsigned short val, unsigned long port) { volatile unsigned short *addr = __ia64_mk_io_addr(port); - unsigned short *dp = dst; + *addr = val; __ia64_mf_a(); - while (count--) { - *dp++ = *addr; - } - __ia64_mf_a(); - return; } static inline void -__insl (unsigned long port, void *dst, unsigned long count) +__ia64_outl (unsigned int val, unsigned long port) { volatile unsigned int *addr = __ia64_mk_io_addr(port); - unsigned int *dp = dst; + *addr = val; __ia64_mf_a(); - while (count--) { - *dp++ = *addr; - } - __ia64_mf_a(); - return; } static inline void -__outb (unsigned char val, unsigned long port) +__insb (unsigned long port, void *dst, unsigned long count) { - volatile unsigned char *addr = __ia64_mk_io_addr(port); + unsigned char *dp = dst; - *addr = val; - __ia64_mf_a(); + if (platform_inb == __ia64_inb) { + volatile unsigned char *addr = __ia64_mk_io_addr(port); + + __ia64_mf_a(); + while (count--) + *dp++ = *addr; + __ia64_mf_a(); + } else + while (count--) + *dp++ = platform_inb(port); + return; } static inline void -__outw (unsigned short val, unsigned long port) +__insw (unsigned long port, void *dst, unsigned long count) { - volatile unsigned short *addr = __ia64_mk_io_addr(port); + unsigned short *dp = dst; - *addr = val; - __ia64_mf_a(); + if (platform_inw == __ia64_inw) { + volatile unsigned short *addr = __ia64_mk_io_addr(port); + + __ia64_mf_a(); + while (count--) + *dp++ = *addr; + __ia64_mf_a(); + } else + while (count--) + *dp++ = platform_inw(port); + return; } static inline void -__outl (unsigned int val, unsigned long port) +__insl (unsigned long port, void *dst, unsigned long count) { - volatile unsigned int *addr = __ia64_mk_io_addr(port); + unsigned int *dp = dst; - *addr = val; - __ia64_mf_a(); + if (platform_inl == __ia64_inl) { + volatile unsigned int *addr = __ia64_mk_io_addr(port); + + __ia64_mf_a(); + while (count--) + *dp++ = *addr; + __ia64_mf_a(); + } else + while (count--) + *dp++ = platform_inl(port); + return; } static inline void __outsb (unsigned long port, const void *src, unsigned long count) { - volatile unsigned char *addr = __ia64_mk_io_addr(port); const unsigned char *sp = src; - while (count--) { - *addr = *sp++; - } - __ia64_mf_a(); + if (platform_outb == __ia64_outb) { + volatile unsigned char *addr = __ia64_mk_io_addr(port); + + while (count--) + *addr = *sp++; + __ia64_mf_a(); + } else + while (count--) + platform_outb(*sp++, port); return; } static inline void __outsw (unsigned long port, const void *src, unsigned long count) { - volatile unsigned short *addr = __ia64_mk_io_addr(port); const unsigned short *sp = src; - while (count--) { - *addr = *sp++; - } - __ia64_mf_a(); + if (platform_outw == __ia64_outw) { + volatile unsigned short *addr = __ia64_mk_io_addr(port); + + while (count--) + *addr = *sp++; + __ia64_mf_a(); + } else + while (count--) + platform_outw(*sp++, port); return; } static inline void __outsl (unsigned long port, void *src, unsigned long count) { - volatile unsigned int *addr = __ia64_mk_io_addr(port); const unsigned int *sp = src; - while (count--) { - *addr = *sp++; - } - __ia64_mf_a(); + if (platform_outl == __ia64_outl) { + volatile unsigned int *addr = __ia64_mk_io_addr(port); + + while (count--) + *addr = *sp++; + __ia64_mf_a(); + } else + while (count--) + platform_outl(*sp++, port); return; } +/* + * Unfortunately, some platforms are broken and do not follow the + * IA-64 architecture specification regarding legacy I/O support. + * Thus, we have to make these operations platform dependent... + */ +#define __inb platform_inb +#define __inw platform_inw +#define __inl platform_inl +#define __outb platform_outb +#define __outw platform_outw +#define __outl platform_outl + #define inb __inb #define inw __inw #define inl __inl |