#include <linux/module.h> #include <linux/types.h> #include <linux/io.h> /* * Copy data from IO memory space to "real" memory space. * This needs to be optimized. */ void _memcpy_fromio(void *to, const volatile void __iomem *from, size_t count) { unsigned char *t = to; while (count) { count--; *t = readb(from); t++; from++; } } /* * Copy data from "real" memory space to IO memory space. * This needs to be optimized. */ void _memcpy_toio(volatile void __iomem *to, const void *from, size_t count) { const unsigned char *f = from; while (count) { count--; writeb(*f, to); f++; to++; } } /* * "memset" on IO memory space. * This needs to be optimized. */ void _memset_io(volatile void __iomem *dst, int c, size_t count) { while (count) { count--; writeb(c, dst); dst++; } } EXPORT_SYMBOL(_memcpy_fromio); EXPORT_SYMBOL(_memcpy_toio); EXPORT_SYMBOL(_memset_io);