diff options
Diffstat (limited to 'arch/m32r/kernel/io_oaks32r.c')
| -rw-r--r-- | arch/m32r/kernel/io_oaks32r.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/arch/m32r/kernel/io_oaks32r.c b/arch/m32r/kernel/io_oaks32r.c new file mode 100644 index 00000000000..286964794d5 --- /dev/null +++ b/arch/m32r/kernel/io_oaks32r.c @@ -0,0 +1,251 @@ +/* + * linux/arch/m32r/kernel/io_oaks32r.c + * + * Typical I/O routines for OAKS32R board. + * + * Copyright (c) 2001-2004 Hiroyuki Kondo, Hirokazu Takata, + * Hitoshi Yamamoto, Mamoru Sakugawa + */ + +#include <linux/config.h> +#include <asm/m32r.h> +#include <asm/page.h> +#include <asm/io.h> + +#define PORT2ADDR(port) _port2addr(port) + +static inline void *_port2addr(unsigned long port) +{ + return (void *)(port + NONCACHE_OFFSET); +} + +static inline void *_port2addr_ne(unsigned long port) +{ + return (void *)((port<<1) + NONCACHE_OFFSET + 0x02000000); +} + +static inline void delay(void) +{ + __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory"); +} + +/* + * NIC I/O function + */ + +#define PORT2ADDR_NE(port) _port2addr_ne(port) + +static inline unsigned char _ne_inb(void *portp) +{ + return *(volatile unsigned char *)(portp+1); +} + +static inline unsigned short _ne_inw(void *portp) +{ + unsigned short tmp; + + tmp = *(unsigned short *)(portp) & 0xff; + tmp |= *(unsigned short *)(portp+2) << 8; + return tmp; +} + +static inline void _ne_insb(void *portp, void *addr, unsigned long count) +{ + unsigned char *buf = addr; + while (count--) + *buf++ = *(volatile unsigned char *)(portp+1); +} + +static inline void _ne_outb(unsigned char b, void *portp) +{ + *(volatile unsigned char *)(portp+1) = b; +} + +static inline void _ne_outw(unsigned short w, void *portp) +{ + *(volatile unsigned short *)portp = (w >> 8); + *(volatile unsigned short *)(portp+2) = (w & 0xff); +} + +unsigned char _inb(unsigned long port) +{ + if (port >= 0x300 && port < 0x320) + return _ne_inb(PORT2ADDR_NE(port)); + + return *(volatile unsigned char *)PORT2ADDR(port); +} + +unsigned short _inw(unsigned long port) +{ + if (port >= 0x300 && port < 0x320) + return _ne_inw(PORT2ADDR_NE(port)); + + return *(volatile unsigned short *)PORT2ADDR(port); +} + +unsigned long _inl(unsigned long port) +{ + return *(volatile unsigned long *)PORT2ADDR(port); +} + +unsigned char _inb_p(unsigned long port) +{ + unsigned char v; + + if (port >= 0x300 && port < 0x320) + v = _ne_inb(PORT2ADDR_NE(port)); + else + v = *(volatile unsigned char *)PORT2ADDR(port); + + delay(); + return (v); +} + +unsigned short _inw_p(unsigned long port) +{ + unsigned short v; + + if (port >= 0x300 && port < 0x320) + v = _ne_inw(PORT2ADDR_NE(port)); + else + v = *(volatile unsigned short *)PORT2ADDR(port); + + delay(); + return (v); +} + +unsigned long _inl_p(unsigned long port) +{ + unsigned long v; + + v = *(volatile unsigned long *)PORT2ADDR(port); + delay(); + return (v); +} + +void _outb(unsigned char b, unsigned long port) +{ + if (port >= 0x300 && port < 0x320) + _ne_outb(b, PORT2ADDR_NE(port)); + else + *(volatile unsigned char *)PORT2ADDR(port) = b; +} + +void _outw(unsigned short w, unsigned long port) +{ + if (port >= 0x300 && port < 0x320) + _ne_outw(w, PORT2ADDR_NE(port)); + else + *(volatile unsigned short *)PORT2ADDR(port) = w; +} + +void _outl(unsigned long l, unsigned long port) +{ + *(volatile unsigned long *)PORT2ADDR(port) = l; +} + +void _outb_p(unsigned char b, unsigned long port) +{ + if (port >= 0x300 && port < 0x320) + _ne_outb(b, PORT2ADDR_NE(port)); + else + *(volatile unsigned char *)PORT2ADDR(port) = b; + + delay(); +} + +void _outw_p(unsigned short w, unsigned long port) +{ + if (port >= 0x300 && port < 0x320) + _ne_outw(w, PORT2ADDR_NE(port)); + else + *(volatile unsigned short *)PORT2ADDR(port) = w; + + delay(); +} + +void _outl_p(unsigned long l, unsigned long port) +{ + *(volatile unsigned long *)PORT2ADDR(port) = l; + delay(); +} + +void _insb(unsigned int port, void *addr, unsigned long count) +{ + if (port >= 0x300 && port < 0x320) + _ne_insb(PORT2ADDR_NE(port), addr, count); + else { + unsigned char *buf = addr; + unsigned char *portp = PORT2ADDR(port); + while (count--) + *buf++ = *(volatile unsigned char *)portp; + } +} + +void _insw(unsigned int port, void *addr, unsigned long count) +{ + unsigned short *buf = addr; + unsigned short *portp; + + if (port >= 0x300 && port < 0x320) { + portp = PORT2ADDR_NE(port); + while (count--) + *buf++ = _ne_inw(portp); + } else { + portp = PORT2ADDR(port); + while (count--) + *buf++ = *(volatile unsigned short *)portp; + } +} + +void _insl(unsigned int port, void *addr, unsigned long count) +{ + unsigned long *buf = addr; + unsigned long *portp; + + portp = PORT2ADDR(port); + while (count--) + *buf++ = *(volatile unsigned long *)portp; +} + +void _outsb(unsigned int port, const void *addr, unsigned long count) +{ + const unsigned char *buf = addr; + unsigned char *portp; + + if (port >= 0x300 && port < 0x320) { + portp = PORT2ADDR_NE(port); + while (count--) + _ne_outb(*buf++, portp); + } else { + portp = PORT2ADDR(port); + while (count--) + *(volatile unsigned char *)portp = *buf++; + } +} + +void _outsw(unsigned int port, const void *addr, unsigned long count) +{ + const unsigned short *buf = addr; + unsigned short *portp; + + if (port >= 0x300 && port < 0x320) { + portp = PORT2ADDR_NE(port); + while (count--) + _ne_outw(*buf++, portp); + } else { + portp = PORT2ADDR(port); + while (count--) + *(volatile unsigned short *)portp = *buf++; + } +} + +void _outsl(unsigned int port, const void *addr, unsigned long count) +{ + const unsigned long *buf = addr; + unsigned char *portp; + + portp = PORT2ADDR(port); + while (count--) + *(volatile unsigned long *)portp = *buf++; +} |