io.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:2k
- #include <linux/config.h>
- #include <linux/types.h>
- #include <asm/io.h>
- /*
- * Copy data from IO memory space to "real" memory space.
- * This needs to be optimized.
- */
- void
- __ia64_memcpy_fromio (void * to, unsigned long from, long count)
- {
- while (count) {
- count--;
- *(char *) to = readb(from);
- ((char *) to)++;
- from++;
- }
- }
- /*
- * Copy data from "real" memory space to IO memory space.
- * This needs to be optimized.
- */
- void
- __ia64_memcpy_toio (unsigned long to, void * from, long count)
- {
- while (count) {
- count--;
- writeb(*(char *) from, to);
- ((char *) from)++;
- to++;
- }
- }
- /*
- * "memset" on IO memory space.
- * This needs to be optimized.
- */
- void
- __ia64_memset_c_io (unsigned long dst, unsigned long c, long count)
- {
- unsigned char ch = (char)(c & 0xff);
- while (count) {
- count--;
- writeb(ch, dst);
- dst++;
- }
- }
- #ifdef CONFIG_IA64_GENERIC
- unsigned int
- ia64_inb (unsigned long port)
- {
- return __ia64_inb(port);
- }
- unsigned int
- ia64_inw (unsigned long port)
- {
- return __ia64_inw(port);
- }
- unsigned int
- ia64_inl (unsigned long port)
- {
- return __ia64_inl(port);
- }
- void
- ia64_outb (unsigned char val, unsigned long port)
- {
- __ia64_outb(val, port);
- }
- void
- ia64_outw (unsigned short val, unsigned long port)
- {
- __ia64_outw(val, port);
- }
- void
- ia64_outl (unsigned int val, unsigned long port)
- {
- __ia64_outl(val, port);
- }
- /* define aliases: */
- asm (".global __ia64_inb, __ia64_inw, __ia64_inl");
- asm ("__ia64_inb = ia64_inb");
- asm ("__ia64_inw = ia64_inw");
- asm ("__ia64_inl = ia64_inl");
- asm (".global __ia64_outb, __ia64_outw, __ia64_outl");
- asm ("__ia64_outb = ia64_outb");
- asm ("__ia64_outw = ia64_outw");
- asm ("__ia64_outl = ia64_outl");
- #endif /* CONFIG_IA64_GENERIC */