From b2e2cdb19bd14a54b2d18a490a156b34f0b52d1d Mon Sep 17 00:00:00 2001
From: Xnoe <xnoe@xnoe.moe>
Date: Mon, 6 Sep 2021 17:34:48 +0100
Subject: [PATCH] Add inw and outw commands in preparation for ATA-PIO support

---
 io.c | 9 +++++++++
 io.h | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/io.c b/io.c
index bcd6885..ae78e65 100644
--- a/io.c
+++ b/io.c
@@ -7,4 +7,13 @@ uint8_t inb(uint16_t portnumber) {
   uint8_t result;
   asm volatile("inb %1, %0" : "=a" (result) : "Nd" (portnumber));
   return result;
+}
+
+void outw(uint16_t portnumber, uint16_t data) {
+  asm volatile("outw %0, %1" : : "a" (data), "Nd" (portnumber));
+}
+uint16_t inw(uint16_t portnumber) {
+  uint16_t result;
+  asm volatile("inw %1, %0" : "=a" (result) : "Nd" (portnumber));
+  return result;
 }
\ No newline at end of file
diff --git a/io.h b/io.h
index a558cf3..8df8ec6 100644
--- a/io.h
+++ b/io.h
@@ -6,4 +6,7 @@
 void outb(uint16_t portnumber, uint8_t data);
 uint8_t inb(uint16_t portnumber);
 
+void outw(uint16_t portnumber, uint16_t data);
+uint16_t inw(uint16_t portnumber);
+
 #endif
\ No newline at end of file