Code-base clean-up and refactoring (#47)

[lunaix-os.git] / lunaix-os / arch / x86 / includes / asm / x86_pmio.h

diff --git a/lunaix-os/arch/x86/includes/asm/x86_pmio.h b/lunaix-os/arch/x86/includes/asm/x86_pmio.h
new file mode 100644 (file)
index 0000000..da2798b
--- /dev/null
+++ b/lunaix-os/arch/x86/includes/asm/x86_pmio.h
@@ -0,0 +1,124 @@
+#ifndef __LUNAIX_PORT_IO_H
+#define __LUNAIX_PORT_IO_H
+
+#include <lunaix/types.h>
+
+static inline u8_t
+port_rdbyte(int port)
+{
+    u8_t data;
+    asm volatile("inb %w1,%0" : "=a"(data) : "d"(port));
+    return data;
+}
+
+static inline void
+port_rdbytes(int port, void* addr, int cnt)
+{
+    asm volatile("cld\n"
+                 "repne\n"
+                 "insb"
+                 : "=D"(addr), "=c"(cnt)
+                 : "d"(port), "0"(addr), "1"(cnt)
+                 : "memory", "cc");
+}
+
+static inline u16_t
+port_rdword(int port)
+{
+    u16_t data;
+    asm volatile("inw %w1,%0" : "=a"(data) : "d"(port));
+    return data;
+}
+
+static inline void
+port_rdwords(int port, void* addr, int cnt)
+{
+    asm volatile("cld\n"
+                 "repne\n"
+                 "insw"
+                 : "=D"(addr), "=c"(cnt)
+                 : "d"(port), "0"(addr), "1"(cnt)
+                 : "memory", "cc");
+}
+
+static inline u32_t
+port_rddword(int port)
+{
+    u32_t data;
+    asm volatile("inl %w1,%0" : "=a"(data) : "d"(port));
+    return data;
+}
+
+static inline void
+port_rddwords(int port, void* addr, int cnt)
+{
+    asm volatile("cld\n"
+                 "repne\n"
+                 "insl"
+                 : "=D"(addr), "=c"(cnt)
+                 : "d"(port), "0"(addr), "1"(cnt)
+                 : "memory", "cc");
+}
+
+static inline void
+port_wrbyte(int port, u8_t data)
+{
+    asm volatile("outb %0, %w1" : : "a"(data), "d"(port));
+}
+
+static inline void
+port_wrbytes(int port, const void* addr, int cnt)
+{
+    asm volatile("cld\n"
+                 "repne\n"
+                 "outsb"
+                 : "=S"(addr), "=c"(cnt)
+                 : "d"(port), "0"(addr), "1"(cnt)
+                 : "cc");
+}
+
+static inline void
+port_wrword(int port, u16_t data)
+{
+    asm volatile("outw %0,%w1" : : "a"(data), "d"(port));
+}
+
+static inline void
+port_wrwords(int port, const void* addr, int cnt)
+{
+    asm volatile("cld\n"
+                 "repne\n"
+                 "outsw"
+                 : "=S"(addr), "=c"(cnt)
+                 : "d"(port), "0"(addr), "1"(cnt)
+                 : "cc");
+}
+
+static inline void
+port_wrdwords(int port, const void* addr, int cnt)
+{
+    asm volatile("cld\n"
+                 "repne\n"
+                 "outsl"
+                 : "=S"(addr), "=c"(cnt)
+                 : "d"(port), "0"(addr), "1"(cnt)
+                 : "cc");
+}
+
+static inline void
+port_wrdword(int port, u32_t data)
+{
+    asm volatile("outl %0,%w1" : : "a"(data), "d"(port));
+}
+
+static inline void
+port_delay(int counter)
+{
+    asm volatile("   test %0, %0\n"
+                 "   jz 1f\n"
+                 "2: dec %0\n"
+                 "   jnz 2b\n"
+                 "1: dec %0" ::"a"(counter));
+}
+
+#endif /* __LUNAIX_PORT_port_H */