55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
#include <libk/std.h>
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#include <amd64/io.h>
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void amd64_io_outb(uint16_t port, uint8_t v) {
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__asm__ volatile("outb %1, %0" :: "dN"(port), "a"(v));
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}
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void amd64_io_outw(uint16_t port, uint16_t v) {
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__asm__ volatile("outw %%ax, %%dx" :: "a"(v), "d"(port));
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}
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void amd64_io_outl(uint16_t port, uint32_t v) {
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__asm__ volatile("outl %%eax, %%dx" :: "d"(port), "a"(v));
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}
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void amd64_io_outsw(uint16_t port, const void *addr, int cnt) {
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__asm__ volatile(
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"cld; rep outsw"
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: "+S"(addr), "+c"(cnt)
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: "d"(port)
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: "memory", "cc"
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);
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}
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uint8_t amd64_io_inb(uint16_t port) {
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uint8_t r;
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__asm__ volatile("inb %1, %0" : "=a"(r) : "dN"(port));
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return r;
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}
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uint16_t amd64_io_inw(uint16_t port) {
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uint16_t r;
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__asm__ volatile("inw %%dx, %%ax" : "=a"(r) : "d"(port));
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return r;
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}
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uint32_t amd64_io_inl(uint16_t port) {
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uint32_t r;
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__asm__ volatile("inl %%dx, %%eax" : "=a"(r) : "d"(port));
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return r;
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}
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void amd64_io_insw(uint16_t port, void *addr, int cnt) {
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__asm__ volatile(
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"cld; rep insw"
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: "+D"(addr), "+c"(cnt)
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: "d"(port)
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: "memory", "cc"
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);
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}
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void amd64_io_wait(void) {
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amd64_io_outb(0x80, 0);
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}
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