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authorYinghai Lu <yinghailu@gmail.com>2004-11-04 21:00:13 +0000
committerYinghai Lu <yinghailu@gmail.com>2004-11-04 21:00:13 +0000
commit8085f032f855474089e5b16fed16d689bf17550c (patch)
tree6e54aed89c3f9f91ffdc43ea88132effdf05099d /src/drivers/si/3114
parent2d2bdd38464b6e4984fbfd20d642e6b3d080e1df (diff)
SI Class code check
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1742 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/drivers/si/3114')
-rw-r--r--src/drivers/si/3114/si_sata.c32
1 files changed, 27 insertions, 5 deletions
diff --git a/src/drivers/si/3114/si_sata.c b/src/drivers/si/3114/si_sata.c
index 276dbe20f0..611ee5b8dd 100644
--- a/src/drivers/si/3114/si_sata.c
+++ b/src/drivers/si/3114/si_sata.c
@@ -1,6 +1,6 @@
-/* Copyright 2003 Tyan */
+/* Copyright 2003-2004 Tyan Computer*/
-/* Author: Yinghai Lu
+/* Author: Yinghai Lu yhlu@tyan.com
*
*/
@@ -20,15 +20,37 @@
static void si_sata_init(struct device *dev)
{
uint16_t word;
-
+ uint32_t dword;
+#if 0
word = pci_read_config16(dev, 0x4);
word |= ((1 << 2) |(1<<4)); // Command: 3--> 17
pci_write_config16(dev, 0x4, word);
+#endif
- printk_debug("SI_SATA_FIXUP: done \n");
+ /* some driver change class code to 0x104, but not change deviceid without reason*/
+ /* restore it so we don't need to unplug AC power to restore it*/
-}
+ word = pci_read_config16(dev, 0x0a);
+ if(word!=0x0180) {
+ /* enble change device id and class id*/
+ dword = pci_read_config32(dev,0x40);
+ dword |= (1<<0);
+ pci_write_config32(dev, 0x40, dword);
+
+ word = 0x0180;
+ pci_write_config16(dev, 0x0a, word);
+
+ /* disable change device id and class id*/
+ dword = pci_read_config32(dev,0x40);
+ dword &= ~(1<<0);
+ pci_write_config32(dev, 0x40, dword);
+ printk_debug("Class code restored.\n");
+
+ }
+
+
+}
static struct device_operations si_sata_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,