Add support for Intel 915 bridge chips to the new PCI MMConfig detection
code. Tested and works on my sole 915 based platform (a Toshiba laptop). I
added register masking per Oliver's suggestion, and moved the __init
qualifier to after the 'static const char' to match Ogawa-san's recent
cleanup patches.
Signed-off-by: Jesse Barnes <[email protected]>
diff --git a/arch/i386/pci/mmconfig-shared.c b/arch/i386/pci/mmconfig-shared.c
index 747d8c6..1339d31 100644
--- a/arch/i386/pci/mmconfig-shared.c
+++ b/arch/i386/pci/mmconfig-shared.c
@@ -72,6 +72,26 @@ static const char __init *pci_mmcfg_e7520(void)
return "Intel Corporation E7520 Memory Controller Hub";
}
+static const char __init *pci_mmcfg_intel_915(void)
+{
+ u32 pciexbar, len = 0;
+
+ pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0x48, 4, &pciexbar);
+
+ /* No enable bit or size field, so assume 256M range is enabled. */
+ len = 0x10000000U;
+ pci_mmcfg_config_num = 1;
+ pciexbar &= 0xe0000000; /* mask out potentially bogus bits */
+
+ pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
+ pci_mmcfg_config[0].address = pciexbar;
+ pci_mmcfg_config[0].pci_segment = 0;
+ pci_mmcfg_config[0].start_bus_number = 0;
+ pci_mmcfg_config[0].end_bus_number = (len >> 20) - 1;
+
+ return "Intel Corporation 915PM/GM/GMS Express Memory Controller Hub";
+}
+
static const char __init *pci_mmcfg_intel_945(void)
{
u32 pciexbar, mask = 0, len = 0;
@@ -129,6 +149,7 @@ struct pci_mmcfg_hostbridge_probe {
static struct pci_mmcfg_hostbridge_probe pci_mmcfg_probes[] __initdata = {
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, pci_mmcfg_e7520 },
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, pci_mmcfg_intel_915 },
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82945G_HB, pci_mmcfg_intel_945 },
};
-
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