Resurrect Cobalt support for 2.6.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/pci/fixup-cobalt.c b/arch/mips/pci/fixup-cobalt.c
index 57e1ca2..909292f 100644
--- a/arch/mips/pci/fixup-cobalt.c
+++ b/arch/mips/pci/fixup-cobalt.c
@@ -21,6 +21,20 @@
extern int cobalt_board_id;
+static void qube_raq_galileo_early_fixup(struct pci_dev *dev)
+{
+ if (dev->devfn == PCI_DEVFN(0, 0) &&
+ (dev->class >> 8) == PCI_CLASS_MEMORY_OTHER) {
+
+ dev->class = (PCI_CLASS_BRIDGE_HOST << 8) | (dev->class & 0xff);
+
+ printk(KERN_INFO "Galileo: fixed bridge class\n");
+ }
+}
+
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_MARVELL, PCI_DEVICE_ID_MARVELL_GT64111,
+ qube_raq_galileo_early_fixup);
+
static void qube_raq_via_bmIDE_fixup(struct pci_dev *dev)
{
unsigned short cfgword;
@@ -48,6 +62,9 @@
{
unsigned short galileo_id;
+ if (dev->devfn != PCI_DEVFN(0, 0))
+ return;
+
/* Fix PCI latency-timer and cache-line-size values in Galileo
* host bridge.
*/
@@ -55,6 +72,13 @@
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 7);
/*
+ * The code described by the comment below has been removed
+ * as it causes bus mastering by the Ethernet controllers
+ * to break under any kind of network load. We always set
+ * the retry timeouts to their maximum.
+ *
+ * --x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--
+ *
* On all machines prior to Q2, we had the STOP line disconnected
* from Galileo to VIA on PCI. The new Galileo does not function
* correctly unless we have it connected.
@@ -64,21 +88,43 @@
*/
pci_read_config_word(dev, PCI_REVISION_ID, &galileo_id);
galileo_id &= 0xff; /* mask off class info */
+
+ printk(KERN_INFO "Galileo: revision %u\n", galileo_id);
+
+#if 0
if (galileo_id >= 0x10) {
/* New Galileo, assumes PCI stop line to VIA is connected. */
GALILEO_OUTL(0x4020, GT_PCI0_TOR_OFS);
- } else if (galileo_id == 0x1 || galileo_id == 0x2) {
+ } else if (galileo_id == 0x1 || galileo_id == 0x2)
+#endif
+ {
signed int timeo;
/* XXX WE MUST DO THIS ELSE GALILEO LOCKS UP! -DaveM */
timeo = GALILEO_INL(GT_PCI0_TOR_OFS);
/* Old Galileo, assumes PCI STOP line to VIA is disconnected. */
- GALILEO_OUTL(0xffff, GT_PCI0_TOR_OFS);
+ GALILEO_OUTL(
+ (0xff << 16) | /* retry count */
+ (0xff << 8) | /* timeout 1 */
+ 0xff, /* timeout 0 */
+ GT_PCI0_TOR_OFS);
+
+ /* enable PCI retry exceeded interrupt */
+ GALILEO_OUTL(GALILEO_INTR_RETRY_CTR | GALILEO_INL(GT_INTRMASK_OFS), GT_INTRMASK_OFS);
}
}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_GALILEO, PCI_ANY_ID,
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL, PCI_DEVICE_ID_MARVELL_GT64111,
qube_raq_galileo_fixup);
+static char irq_tab_qube1[] __initdata = {
+ [COBALT_PCICONF_CPU] = 0,
+ [COBALT_PCICONF_ETH0] = COBALT_QUBE1_ETH0_IRQ,
+ [COBALT_PCICONF_RAQSCSI] = COBALT_SCSI_IRQ,
+ [COBALT_PCICONF_VIA] = 0,
+ [COBALT_PCICONF_PCISLOT] = COBALT_QUBE_SLOT_IRQ,
+ [COBALT_PCICONF_ETH1] = 0
+};
+
static char irq_tab_cobalt[] __initdata = {
[COBALT_PCICONF_CPU] = 0,
[COBALT_PCICONF_ETH0] = COBALT_ETH0_IRQ,
@@ -99,6 +145,9 @@
int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
+ if (cobalt_board_id < COBALT_BRD_ID_QUBE2)
+ return irq_tab_qube1[slot];
+
if (cobalt_board_id == COBALT_BRD_ID_RAQ2)
return irq_tab_raq2[slot];