Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / arch / i386 / pci / common.c

diff --git a/arch/i386/pci/common.c b/arch/i386/pci/common.c
index 720975e..dbece77 100644 (file)
--- a/arch/i386/pci/common.c
+++ b/arch/i386/pci/common.c
@@ -8,6 +8,7 @@
 #include <linux/pci.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
+#include <linux/dmi.h>
 
 #include <asm/acpi.h>
 #include <asm/segment.h>
@@ -25,7 +26,8 @@ unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
 
 int pci_routeirq;
 int pcibios_last_bus = -1;
-struct pci_bus *pci_root_bus = NULL;
+unsigned long pirq_table_addr;
+struct pci_bus *pci_root_bus;
 struct pci_raw_ops *raw_pci_ops;
 
 static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
@@ -119,11 +121,42 @@ void __devinit  pcibios_fixup_bus(struct pci_bus *b)
        pci_read_bridge_bases(b);
 }
 
+/*
+ * Enable renumbering of PCI bus# ranges to reach all PCI busses (Cardbus)
+ */
+#ifdef __i386__
+static int __devinit assign_all_busses(struct dmi_system_id *d)
+{
+       pci_probe |= PCI_ASSIGN_ALL_BUSSES;
+       printk(KERN_INFO "%s detected: enabling PCI bus# renumbering"
+                       " (pci=assign-busses)\n", d->ident);
+       return 0;
+}
+#endif
+
+/*
+ * Laptops which need pci=assign-busses to see Cardbus cards
+ */
+static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
+#ifdef __i386__
+       {
+               .callback = assign_all_busses,
+               .ident = "Samsung X20 Laptop",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Samsung Electronics"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "SX20S"),
+               },
+       },
+#endif         /* __i386__ */
+       {}
+};
 
 struct pci_bus * __devinit pcibios_scan_root(int busnum)
 {
        struct pci_bus *bus = NULL;
 
+       dmi_check_system(pciprobe_dmi_table);
+
        while ((bus = pci_find_next_bus(bus)) != NULL) {
                if (bus->number == busnum) {
                        /* Already scanned */
@@ -131,9 +164,9 @@ struct pci_bus * __devinit pcibios_scan_root(int busnum)
                }
        }
 
-       printk("PCI: Probing PCI hardware (bus %02x)\n", busnum);
+       printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
 
-       return pci_scan_bus(busnum, &pci_root_ops, NULL);
+       return pci_scan_bus_parented(NULL, busnum, &pci_root_ops, NULL);
 }
 
 extern u8 pci_cache_line_size;
@@ -143,7 +176,7 @@ static int __init pcibios_init(void)
        struct cpuinfo_x86 *c = &boot_cpu_data;
 
        if (!raw_pci_ops) {
-               printk("PCI: System does not support PCI\n");
+               printk(KERN_WARNING "PCI: System does not support PCI\n");
                return 0;
        }
 
@@ -188,6 +221,9 @@ char * __devinit  pcibios_setup(char *str)
        } else if (!strcmp(str, "biosirq")) {
                pci_probe |= PCI_BIOS_IRQ_SCAN;
                return NULL;
+       } else if (!strncmp(str, "pirqaddr=", 9)) {
+               pirq_table_addr = simple_strtoul(str+9, NULL, 0);
+               return NULL;
        }
 #endif
 #ifdef CONFIG_PCI_DIRECT
@@ -249,3 +285,9 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
 
        return pcibios_enable_irq(dev);
 }
+
+void pcibios_disable_device (struct pci_dev *dev)
+{
+       if (pcibios_disable_irq)
+               pcibios_disable_irq(dev);
+}