summaryrefslogtreecommitdiff
path: root/src/southbridge
diff options
context:
space:
mode:
authorRonald G. Minnich <rminnich@gmail.com>2003-09-30 18:18:22 +0000
committerRonald G. Minnich <rminnich@gmail.com>2003-09-30 18:18:22 +0000
commit303349a9d2c266bb342a76f3d55600243ef0b774 (patch)
tree336def2889c3d6556ede23b4a0bc26e54072f167 /src/southbridge
parent00359e91ec36a52fd99f3ad16ec4125ecc3dfb61 (diff)
fix and complaint.
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1163 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/southbridge')
-rw-r--r--src/southbridge/via/vt8231/chip.h7
-rw-r--r--src/southbridge/via/vt8231/vt8231.c25
2 files changed, 31 insertions, 1 deletions
diff --git a/src/southbridge/via/vt8231/chip.h b/src/southbridge/via/vt8231/chip.h
index 5c2d67a78f..0ae3b98c63 100644
--- a/src/southbridge/via/vt8231/chip.h
+++ b/src/southbridge/via/vt8231/chip.h
@@ -4,6 +4,13 @@
extern struct chip_control southbridge_via_vt8231_control;
struct southbridge_via_vt8231_config {
+ /* PCI function enables */
+ /* i.e. so that pci scan bus will find them. */
+ /* I am putting in IDE as an example but obviously this needs
+ * to be more complete!
+ */
+ int enable_ide;
+ /* enables of functions of devices */
int enable_usb;
int enable_native_ide;
int enable_com_ports;
diff --git a/src/southbridge/via/vt8231/vt8231.c b/src/southbridge/via/vt8231/vt8231.c
index 3e6372c64f..95e2ca573a 100644
--- a/src/southbridge/via/vt8231/vt8231.c
+++ b/src/southbridge/via/vt8231/vt8231.c
@@ -134,6 +134,24 @@ static void ethernet_fixup()
}
+/* we need to do things in this function so that PCI scan will find
+ * them. One problem here is that we can't use ANY of the new device
+ * stuff. This work here precedes all that.
+ * Fundamental problem with linuxbios V2 architecture.
+ * You can't do pci control in the C code without having done a PCI scan.
+ * But in some cases you need to to pci control in the c code before doing
+ * a PCI scan. But you can't use arch/romcc_io.h (the code you need) because
+ * that has functions with the same name but different type signatures
+ * (e.g. device_t). This needs to get fixed. We need low-level pci scans
+ * in the C code.
+ */
+static void vt8231_pci_enable(struct southbridge_via_vt8231_config *conf) {
+ unsigned long busdevfn = 0x8000;
+ if (conf->enable_ide) {
+ printk_spew("%s: enabling IDE function\n", __FUNCTION__);
+ }
+
+}
static void vt8231_init(struct southbridge_via_vt8231_config *conf)
{
unsigned char enables;
@@ -144,7 +162,7 @@ static void vt8231_init(struct southbridge_via_vt8231_config *conf)
// to do: use the pcibios_find function here, instead of
// hard coding the devfn.
// done - kevinh/Ispiri
-
+ printk_spew("vt8231 init\n");
/* Base 8231 controller */
dev0 = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, 0);
/* IDE controller */
@@ -262,6 +280,7 @@ static void vt8231_init(struct southbridge_via_vt8231_config *conf)
// Run the IDE controller in 'compatiblity mode - i.e. don't use PCI
// interrupts. Using PCI ints confuses linux for some reason.
+ printk_info("%s: enabling native IDE addresses\n", __FUNCTION__);
enables = pci_read_config8(dev1, 0x42);
printk_debug("enables in reg 0x42 0x%x\n", enables);
enables &= ~0xc0; // compatability mode
@@ -352,6 +371,10 @@ southbridge_init(struct chip *chip, enum chip_pass pass)
(struct southbridge_via_vt8231_config *)chip->chip_info;
switch (pass) {
+ case CONF_PASS_PRE_PCI:
+ vt8231_pci_enable(conf);
+ break;
+
case CONF_PASS_POST_PCI:
vt8231_init(conf);
break;