patch-2.2.8 linux/arch/ppc/kernel/pmac_pci.c

• Lines: 60
• Date: Thu Apr 29 12:39:01 1999
• Orig file: v2.2.7/linux/arch/ppc/kernel/pmac_pci.c
• Orig date: Tue Mar 23 14:35:46 1999

diff -u --recursive --new-file v2.2.7/linux/arch/ppc/kernel/pmac_pci.c linux/arch/ppc/kernel/pmac_pci.c
@@ -21,6 +21,9 @@
 #include <asm/pgtable.h>
 #include <asm/prom.h>
 #include <asm/pci-bridge.h>
+#include <asm/machdep.h>
+
+#include "pci.h"
 
 struct bridge_data **bridges, *bridge_list;
 static int max_bus;
@@ -437,5 +440,49 @@
 		if (strcmp(dev->name, "bandit") == 0)
 			init_bandit(bp);
 	}
+}
+
+__initfunc(
+void
+pmac_pcibios_fixup(void))
+{
+	struct pci_dev *dev;
+	
+	/*
+	 * FIXME: This is broken: We should not assign IRQ's to IRQless
+	 *	  devices (look at PCI_INTERRUPT_PIN) and we also should
+	 *	  honor the existence of multi-function devices where
+	 *	  different functions have different interrupt pins. [mj]
+	 */
+	for(dev=pci_devices; dev; dev=dev->next)
+	{
+		/*
+		 * Open Firmware often doesn't initialize the,
+		 * PCI_INTERRUPT_LINE config register properly, so we
+		 * should find the device node and se if it has an
+		 * AAPL,interrupts property.
+		 */
+		struct bridge_data *bp = bridges[dev->bus->number];
+		unsigned char pin;
+			
+		if (pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin) ||
+		    !pin)
+			continue; /* No interrupt generated -> no fixup */
+                fix_intr(bp->node->child, dev);
+	}
+}
+
+__initfunc(
+void
+pmac_setup_pci_ptrs(void))
+{
+	if (find_devices("pci") != 0) {
+		/* looks like a G3 powermac */
+		set_config_access_method(grackle);
+	} else {
+		set_config_access_method(pmac);
+	}
+
+	ppc_md.pcibios_fixup = pmac_pcibios_fixup;
 }