1 files changed, 108 insertions, 0 deletions
diff --git a/purgatory/arch/ia64/io.h b/purgatory/arch/ia64/io.h
new file mode 100644
index 0000000..0f78580
--- /dev/null
+++ b/purgatory/arch/ia64/io.h
@@ -0,0 +1,108 @@
+#ifndef IO_H
+#define IO_H
+#define UNCACHED(x) (void *)((x)|(1UL<<63))
+#define MF()	asm volatile ("mf.a" ::: "memory")
+#define IO_SPACE_ENCODING(p)     ((((p) >> 2) << 12) | (p & 0xfff))
+extern long __noio;
+static inline void *io_addr (unsigned long port)
+{
+        unsigned long offset;
+	unsigned long io_base;
+	asm volatile ("mov %0=ar.k0":"=r"(io_base));
+	offset = IO_SPACE_ENCODING(port);
+        return UNCACHED(io_base | offset);
+}
+
+static inline unsigned int inb (unsigned long port)
+{
+        volatile unsigned char *addr = io_addr(port);
+	unsigned char ret = 0;
+	if (!__noio) {
+		ret = *addr;
+		MF();
+	}
+        return ret;
+}
+
+static inline unsigned int inw (unsigned long port)
+{
+        volatile unsigned short *addr = io_addr(port);
+	unsigned short ret = 0;
+
+	if (!__noio) {
+		ret = *addr;
+		MF();
+	}
+        return ret;
+}
+
+static inline unsigned int inl (unsigned long port)
+{
+	volatile unsigned int *addr = io_addr(port);
+	unsigned int ret ;
+	if (!__noio) {
+		ret = *addr;
+		MF();
+	}
+        return ret;
+}
+
+static inline void outb (unsigned char val, unsigned long port)
+{
+        volatile unsigned char *addr = io_addr(port);
+
+	if (!__noio) {
+		*addr = val;
+		MF();
+	}
+}
+
+static inline void outw (unsigned short val, unsigned long port)
+{
+        volatile unsigned short *addr = io_addr(port);
+
+	if (!__noio) {
+		*addr = val;
+		MF();
+	}
+}
+
+static inline void outl (unsigned int val, unsigned long port)
+{
+        volatile unsigned int *addr = io_addr(port);
+
+	if (!__noio) {
+		*addr = val;
+		MF();
+	}
+}
+
+static inline unsigned char readb(const volatile void  *addr)
+{
+	return __noio ? 0 :*(volatile unsigned char *) addr;
+}
+static inline unsigned short readw(const volatile void  *addr)
+{
+	return __noio ? 0 :*(volatile unsigned short *) addr;
+}
+static inline unsigned int readl(const volatile void  *addr)
+{
+	return __noio ? 0 :*(volatile unsigned int *) addr;
+}
+
+static inline void writeb(unsigned char b, volatile void  *addr)
+{
+	if (!__noio)
+		*(volatile unsigned char *) addr = b;
+}
+static inline void writew(unsigned short b, volatile void  *addr)
+{
+	if (!__noio)
+		*(volatile unsigned short *) addr = b;
+}
+static inline void writel(unsigned int b, volatile void  *addr)
+{
+	if (!__noio)
+		*(volatile unsigned int *) addr = b;
+}
+#endif