From 3948e7471190774f3e41f453469fb2a4f59c081e Mon Sep 17 00:00:00 2001
From: Adam Honse <calcprogrammer1@gmail.com>
Date: Tue, 11 Feb 2020 20:25:28 -0600
Subject: [PATCH] Use /dev/port to make Super IO functions work on Linux

---
 super_io/super_io.cpp | 31 ++++++++++++++++++++++++-------
 1 file changed, 24 insertions(+), 7 deletions(-)

diff --git a/super_io/super_io.cpp b/super_io/super_io.cpp
index 6de0de57..0a5c8232 100644
--- a/super_io/super_io.cpp
+++ b/super_io/super_io.cpp
@@ -14,7 +14,11 @@
 
 #pragma comment(lib, "inpout32.lib")
 #else
-#include <sys/io.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <fcntl.h>
+
+int dev_port_fd;
 #endif
 
 /******************************************************************************************\
@@ -31,8 +35,13 @@ void superio_enter(int ioreg)
     Out32(ioreg, 0x87);
     Out32(ioreg, 0x87);
 #else
-    outb_p(0x87, ioreg);
-    outb_p(0x87, ioreg);
+    unsigned char temp = 0x87;
+    dev_port_fd = open("/dev/port", O_RDWR, "rw");
+    lseek(dev_port_fd, ioreg, SEEK_CUR);
+    write(dev_port_fd, &temp, 1);
+    lseek(dev_port_fd, ioreg, SEEK_CUR);
+    write(dev_port_fd, &temp, 1);
+    close(dev_port_fd);
 #endif
 }
 
@@ -51,8 +60,11 @@ void superio_outb(int ioreg, int reg, int val)
     Out32(ioreg, reg);
     Out32(ioreg + 1, val);
 #else
-    outb_p(reg, ioreg);
-    outb_p(val, ioreg + 1);
+    dev_port_fd = open("/dev/port", O_RDWR, "rw");
+    lseek(dev_port_fd, ioreg, SEEK_CUR);
+    write(dev_port_fd, &reg, 1);
+    write(dev_port_fd, &val, 1);
+    close(dev_port_fd);
 #endif
 }
 
@@ -71,7 +83,12 @@ int superio_inb(int ioreg, int reg)
     Out32(ioreg, reg);
     return Inp32(ioreg + 1);
 #else
-    outb_p(reg, ioreg);
-    return inb_p(ioreg + 1);
+    unsigned char temp;
+    dev_port_fd = open("/dev/port", O_RDWR, "rw");
+    lseek(dev_port_fd, ioreg, SEEK_CUR);
+    write(dev_port_fd, &reg, 1);
+    read(dev_port_fd, &temp, 1);
+    close(dev_port_fd);
+    return((int)temp);
 #endif
 }
\ No newline at end of file