[PATCH] IDE PCI probe

[Tim Hockin <thockin@sun.com>]

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Andre,

Here is the patch as we discussed - it works, it is good.  Needed for
controllers that can do native mode but not native PCI IRQs.

Tim
-- 
Tim Hockin
Systems Software Engineer
Sun Microsystems, Cobalt Server Appliances
thockin@sun.com

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--- virgin-2.4.12/drivers/ide/ide-pci.c	Wed Oct 10 14:37:29 2001
+++ CVS-checkout/drivers/ide/ide-pci.c	Thu Oct 18 10:22:53 2001
@@ -653,32 +653,44 @@
 		/* Its attached to something else, just a random bridge. 
 		   Suspect a fastrak and fall through */
 	}
-	if ((dev->class & ~(0xfa)) != ((PCI_CLASS_STORAGE_IDE << 8) | 5)) {
-		printk("%s: not 100%% native mode: will probe irqs later\n", d->name);
-		/*
-		 * This allows offboard ide-pci cards the enable a BIOS,
-		 * verify interrupt settings of split-mirror pci-config
-		 * space, place chipset into init-mode, and/or preserve
-		 * an interrupt if the card is not native ide support.
-		 */
-		pciirq = (d->init_chipset) ? d->init_chipset(dev, d->name) : ide_special_settings(dev, d->name);
+
+	if (!tried_config && 
+	   (dev->class >> 8 == PCI_CLASS_STORAGE_IDE ||
+	    dev->class >> 8 == PCI_CLASS_STORAGE_OTHER)) {
+		if ((dev->class & 0x5) == 0x5 && pciirq) {
+			if (d->init_chipset) {
+				(void) d->init_chipset(dev, d->name);
+			}
+#ifdef __sparc__
+			printk("%s: 100%% native mode on irq %s\n",
+				d->name, __irq_itoa(pciirq));
+#else
+			printk("%s: 100%% native mode on irq %d\n", 
+				d->name, pciirq);
+#endif
+		} else if ((dev->class & 0x5) == 0x5) {
+			if (d->init_chipset) {
+				pciirq = d->init_chipset(dev, d->name);
+			}
+			printk("%s: native mode: will probe irqs later\n", 
+				d->name);
+		} else {
+			if (d->init_chipset) {
+				pciirq = d->init_chipset(dev, d->name);
+			} else {
+				pciirq = ide_special_settings(dev, d->name);
+			}
+			printk("%s: non-native mode: will probe irqs later\n", 
+				d->name);
+		}
 	} else if (tried_config) {
 		printk("%s: will probe irqs later\n", d->name);
 		pciirq = 0;
-	} else if (!pciirq) {
-		printk("%s: bad irq (%d): will probe later\n", d->name, pciirq);
-		pciirq = 0;
 	} else {
-		if (d->init_chipset)
-			(void) d->init_chipset(dev, d->name);
-#ifdef __sparc__
-		printk("%s: 100%% native mode on irq %s\n",
-		       d->name, __irq_itoa(pciirq));
-#else
-		printk("%s: 100%% native mode on irq %d\n", d->name, pciirq);
-#endif
+		printk("%s: what am I expected to do with this?\n", d->name);
+		pciirq = 0;
 	}
-
+		
 	/*
 	 * Set up the IDE ports
 	 */
@@ -784,6 +796,7 @@
 		    IDE_PCI_DEVID_EQ(d->devid, DEVID_CMD648) ||
 		    IDE_PCI_DEVID_EQ(d->devid, DEVID_CMD649) ||
 		    IDE_PCI_DEVID_EQ(d->devid, DEVID_OSB4) ||
+		    IDE_PCI_DEVID_EQ(d->devid, DEVID_CSB5) ||
 		    ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE && (dev->class & 0x80))) {
 			unsigned long dma_base = ide_get_or_set_dma_base(hwif, (!mate && d->extra) ? d->extra : 0, d->name);
 			if (dma_base && !(pcicmd & PCI_COMMAND_MASTER)) {