[PATCH] x86,pci: dmi check for mackpro 2.2 mmconf

change the mconf bus range from [0,0xff] to to [0, 0x3f]
to match range [0xf0000000, 0xf4000000) in e820 tables.

Signed-off-by: Yinghai Lu <[email protected]>
Tested-by: Jack Howarth <[email protected]>

---
arch/x86/pci/mmconfig-shared.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)

Index: linux-2.6/arch/x86/pci/mmconfig-shared.c
===================================================================
--- linux-2.6.orig/arch/x86/pci/mmconfig-shared.c
+++ linux-2.6/arch/x86/pci/mmconfig-shared.c
@@ -374,6 +374,40 @@ reject:

static int __initdata known_bridge;

+static int __devinit check_mmconf(const struct dmi_system_id *d)
+{
+ typeof(pci_mmcfg_config[0]) *cfg;
+
+ if ((pci_mmcfg_config_num != 1) ||
+ (pci_mmcfg_config == NULL) ||
+ (pci_mmcfg_config[0].address == 0))
+ return 1;
+
+ cfg = &pci_mmcfg_config[0];
+
+ if (cfg->start_bus_number == 0 && cfg->end_bus_number > 0x3f)
+ cfg->end_bus_number = 0x3f;
+
+ return 0;
+}
+
+static struct dmi_system_id __devinitdata mmconf_dmi_table[] = {
+ {
+ .callback = check_mmconf,
+ .ident = "Apple",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2"),
+ },
+ },
+ {}
+};
+
+void __init check_mmconf_dmi(void)
+{
+ dmi_check_system(mmconf_dmi_table);
+}
+
static void __init __pci_mmcfg_init(int early)
{
/* MMCONFIG disabled */
@@ -395,6 +429,7 @@ static void __init __pci_mmcfg_init(int

if (!known_bridge) {
acpi_table_parse(ACPI_SIG_MCFG, acpi_parse_mcfg);
+ check_mmconf_dmi();
pci_mmcfg_reject_broken(early);
}

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