1 files changed, 50 insertions, 0 deletions
diff --git a/roms/qboot/include/ioport.h b/roms/qboot/include/ioport.h
new file mode 100644
index 000000000..08a8dbd9b
--- /dev/null
+++ b/roms/qboot/include/ioport.h
@@ -0,0 +1,50 @@
+#ifndef BIOS_IOPORT_H
+#define BIOS_IOPORT_H 1
+
+static inline void outsb(unsigned short port, void *buf, int len)
+{
+	asm volatile("rep outsb %%ds:(%0), %3" : "=S" (buf), "=c" (len) : "m"(buf), "Nd"(port), "0" (buf), "1" (len));
+}
+
+static inline void insb(void *buf, unsigned short port, int len)
+{
+	asm volatile("rep insb %3, %%es:(%0)" : "=D" (buf), "=c" (len), "=m"(buf) : "Nd"(port), "0" (buf), "1" (len));
+}
+
+static inline unsigned char inb(unsigned short port)
+{
+	unsigned char val;
+	asm volatile("inb %1, %0" : "=a"(val) : "Nd"(port));
+	return val;
+}
+
+static inline unsigned short inw(unsigned short port)
+{
+	unsigned short val;
+	asm volatile("inw %1, %0" : "=a"(val) : "Nd"(port));
+	return val;
+}
+
+static inline unsigned inl(unsigned short port)
+{
+	unsigned val;
+	asm volatile("inl %1, %0" : "=a"(val) : "Nd"(port));
+	return val;
+}
+
+static inline void outb(unsigned short port, unsigned char val)
+{
+	asm volatile("outb %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline void outw(unsigned short port, unsigned short val)
+{
+	asm volatile("outw %0, %1" : : "a"(val), "Nd"(port));
+}
+
+static inline void outl(unsigned short port, unsigned val)
+{
+	asm volatile("outl %0, %1" : : "a"(val), "Nd"(port));
+}
+
+#endif