From 8702ab5ab1ee3e9f4f4d6edd7cec85ed6029aac8 Mon Sep 17 00:00:00 2001
From: Stefan Reinauer <stepan@coresystems.de>
Date: Sun, 14 Mar 2010 17:01:08 +0000
Subject: ICH4 update, fix ATA init, drop SATA (chipset doesn't have SATA) fix
 some PCI IDs, enable USB bus mastering, add some license headers, ...

LPC code needs another look, but I think we're getting there.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Joseph Smith <joe@settoplinux.org>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5207 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
---
 src/southbridge/intel/i82801dx/i82801dx.c | 73 ++++++++++++++++++++-----------
 1 file changed, 47 insertions(+), 26 deletions(-)

(limited to 'src/southbridge/intel/i82801dx/i82801dx.c')

diff --git a/src/southbridge/intel/i82801dx/i82801dx.c b/src/southbridge/intel/i82801dx/i82801dx.c
index abfd8c21cf..282ccfd247 100644
--- a/src/southbridge/intel/i82801dx/i82801dx.c
+++ b/src/southbridge/intel/i82801dx/i82801dx.c
@@ -1,3 +1,23 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2004 Ron G. Minnich
+ *
+ * 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; version 2 of
+ * the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
 #include <console/console.h>
 #include <device/device.h>
 #include <device/pci.h>
@@ -10,48 +30,49 @@ void i82801dx_enable(device_t dev)
 	uint8_t bHasDisableBit = 0;
 	uint16_t cur_disable_mask, new_disable_mask;
 
-//	all 82801dbm devices are in bus 0
-	unsigned int devfn = PCI_DEVFN(0x1f, 0); // lpc
-	device_t lpc_dev = dev_find_slot(0, devfn); // 0
+//      all 82801dbm devices are in bus 0
+	unsigned int devfn = PCI_DEVFN(0x1f, 0);	// lpc
+	device_t lpc_dev = dev_find_slot(0, devfn);	// 0
 	if (!lpc_dev)
 		return;
 
 	// Calculate disable bit position for specified device:function
 	// NOTE: For ICH-4, only the following devices can be disabled:
-	//		 D31: F0, F1, F3, F5, F6, 
-	//		 D29: F0, F1, F2, F7
+	//               D31: F0, F1, F3, F5, F6, 
+	//               D29: F0, F1, F2, F7
 
-    if (PCI_SLOT(dev->path.pci.devfn) == 31) {
-    	index = PCI_FUNC(dev->path.pci.devfn);
+	if (PCI_SLOT(dev->path.pci.devfn) == 31) {
+		index = PCI_FUNC(dev->path.pci.devfn);
 
 		switch (index) {
-			case 0:
-			case 1:
-			case 3:
-			case 5:
-			case 6:
-				bHasDisableBit = 1;
-				break;
-			
-			default:
-				break;
+		case 0:
+		case 1:
+		case 3:
+		case 5:
+		case 6:
+			bHasDisableBit = 1;
+			break;
+
+		default:
+			break;
 		};
-		
+
 		if (index == 0)
-			index = 14;		// D31:F0 bit is an exception
+			index = 14;	// D31:F0 bit is an exception
 
-    } else if (PCI_SLOT(dev->path.pci.devfn) == 29) {
-    	index = 8 + PCI_FUNC(dev->path.pci.devfn);
+	} else if (PCI_SLOT(dev->path.pci.devfn) == 29) {
+		index = 8 + PCI_FUNC(dev->path.pci.devfn);
 
-		if ((PCI_FUNC(dev->path.pci.devfn) < 3) || (PCI_FUNC(dev->path.pci.devfn) == 7))
+		if ((PCI_FUNC(dev->path.pci.devfn) < 3)
+		    || (PCI_FUNC(dev->path.pci.devfn) == 7))
 			bHasDisableBit = 1;
-    }
+	}
 
 	if (bHasDisableBit) {
 		cur_disable_mask = pci_read_config16(lpc_dev, FUNC_DIS);
-		new_disable_mask = cur_disable_mask & ~(1<<index); 		// enable it
+		new_disable_mask = cur_disable_mask & ~(1 << index);	// enable it
 		if (!dev->enabled) {
-			new_disable_mask |= (1<<index);  // disable it
+			new_disable_mask |= (1 << index);	// disable it
 		}
 		if (new_disable_mask != cur_disable_mask) {
 			pci_write_config16(lpc_dev, FUNC_DIS, new_disable_mask);
@@ -61,5 +82,5 @@ void i82801dx_enable(device_t dev)
 
 struct chip_operations southbridge_intel_i82801dx_ops = {
 	CHIP_NAME("Intel ICH4/ICH4-M (82801Dx) Series Southbridge")
-	.enable_dev = i82801dx_enable,
+	    .enable_dev = i82801dx_enable,
 };
-- 
cgit v1.2.3