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Diffstat (limited to 'arch/i386/pci/common.c')
-rw-r--r--arch/i386/pci/common.c59
1 files changed, 57 insertions, 2 deletions
diff --git a/arch/i386/pci/common.c b/arch/i386/pci/common.c
index 68bce194e68..6d5ace845e4 100644
--- a/arch/i386/pci/common.c
+++ b/arch/i386/pci/common.c
@@ -20,6 +20,7 @@
unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
PCI_PROBE_MMCONF;
+int pci_bf_sort;
int pci_routeirq;
int pcibios_last_bus = -1;
unsigned long pirq_table_addr;
@@ -118,6 +119,20 @@ void __devinit pcibios_fixup_bus(struct pci_bus *b)
}
/*
+ * Only use DMI information to set this if nothing was passed
+ * on the kernel command line (which was parsed earlier).
+ */
+
+static int __devinit set_bf_sort(struct dmi_system_id *d)
+{
+ if (pci_bf_sort == pci_bf_sort_default) {
+ pci_bf_sort = pci_dmi_bf;
+ printk(KERN_INFO "PCI: %s detected, enabling pci=bfsort.\n", d->ident);
+ }
+ return 0;
+}
+
+/*
* Enable renumbering of PCI bus# ranges to reach all PCI busses (Cardbus)
*/
#ifdef __i386__
@@ -130,11 +145,11 @@ static int __devinit assign_all_busses(struct dmi_system_id *d)
}
#endif
+static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
+#ifdef __i386__
/*
* 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",
@@ -144,6 +159,38 @@ static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
},
},
#endif /* __i386__ */
+ {
+ .callback = set_bf_sort,
+ .ident = "Dell PowerEdge 1950",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1950"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "Dell PowerEdge 1955",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1955"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "Dell PowerEdge 2900",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2900"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "Dell PowerEdge 2950",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2950"),
+ },
+ },
{}
};
@@ -189,6 +236,8 @@ static int __init pcibios_init(void)
pcibios_resource_survey();
+ if (pci_bf_sort >= pci_force_bf)
+ pci_sort_breadthfirst();
#ifdef CONFIG_PCI_BIOS
if ((pci_probe & PCI_BIOS_SORT) && !(pci_probe & PCI_NO_SORT))
pcibios_sort();
@@ -203,6 +252,12 @@ char * __devinit pcibios_setup(char *str)
if (!strcmp(str, "off")) {
pci_probe = 0;
return NULL;
+ } else if (!strcmp(str, "bfsort")) {
+ pci_bf_sort = pci_force_bf;
+ return NULL;
+ } else if (!strcmp(str, "nobfsort")) {
+ pci_bf_sort = pci_force_nobf;
+ return NULL;
}
#ifdef CONFIG_PCI_BIOS
else if (!strcmp(str, "bios")) {