From bace775fefff3a1f9825e1282521d4e155cbbfc4 Mon Sep 17 00:00:00 2001
From: Philip Edelbrock <phil@netroedge.com>
Date: Fri, 4 Dec 1998 03:49:47 +0000
Subject: [PATCH] (Phil) OK, here is the first shot at integrating PIIX4
 support in the new lm_sensors2 project.  It was *very* easy to copy-and-paste
 it in, so I'm hoping that it won't include any new bugs.  It builds and
 compiles, but I wasn't able to test it (under 2.1.131) until we get some
 compatibility problems solved.  There is probably a little cleaning up to do
 yet, but everything looks like it is happy.  Test it under 2.0.x and let me
 know what happens.

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@31 7894878c-1315-0410-8ee3-d5d059ff63e0
---
 src/piix4.h | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 src/piix4.h

diff --git a/src/piix4.h b/src/piix4.h
new file mode 100644
index 00000000..b9e8c91e
--- /dev/null
+++ b/src/piix4.h
@@ -0,0 +1,74 @@
+/*
+    piix4.h - Part of a Linux module for reading sensor data.
+    Copyright (c) 1998  Alexander Larsson <alla@lysator.liu.se>,
+    Frodo Looijaard <frodol@dds.nl> and Philip Edelbrock <phil@netroedge.com>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+/* This file was taken almost directly from the first (lm_sensors) project */
+/* Some things will probably need to change or will simply not be used.    */
+
+
+#include <asm/types.h>
+#include <linux/unistd.h>
+/*
+        I/O Space Constants
+*/
+#define SMBHSTSTS PIIX4_smba
+#define SMBHSLVSTS PIIX4_smba + 1
+#define SMBHSTCNT PIIX4_smba + 2
+#define SMBHSTCMD PIIX4_smba + 3
+#define SMBHSTADD PIIX4_smba + 4
+#define SMBHSTDAT0 PIIX4_smba + 5
+#define SMBHSTDAT1 PIIX4_smba + 6
+#define SMBBLKDAT PIIX4_smba + 7
+#define SMBSLVCNT PIIX4_smba + 8
+#define SMBSHDWCMD PIIX4_smba + 9
+#define SMBSLVEVT PIIX4_smba + 0xA
+#define SMBSLVDAT PIIX4_smba + 0xC
+
+/*
+        PCI Address Constants
+*/
+#define SMBBA     0x090
+#define SMBHSTCFG 0x0D2
+#define SMBSLVC   0x0D3
+#define SMBSHDW1  0x0D4
+#define SMBSHDW2  0x0D5
+#define SMBREV    0x0D6
+
+/*
+        Contants for other uses
+*/
+#define MAX_TIMEOUT 500
+#define SMBUS_READ	1
+#define SMBUS_WRITE	0
+/* Set to 1 to enable (don't comment out completely)
+   This is known to freeze some machines (as Frodo knows ;')
+   in the current implemented state, so beware! */
+#define  ENABLE_INT9 0
+
+#define SMBUSTABLE_SIZE 64
+
+/*
+	Prototypes 
+*/
+extern int SMBus_PIIX4_Init(void);
+extern void SMBus_PIIX4_Cleanup(void);
+extern int SMBus_PIIX4_Access(u8 addr, char read_write, u8 command, int size,
+                        union SMBus_Data *data);
+
+extern int SMBus_PIIX4_Initialized;