---

yaml --- r: 53949 b: refs/heads/master c: b5229db h: refs/heads/master i: 53947: 8c28fb0 v: v3
git-mirror · May 2, 2007 · 5595217 · 5595217
1 parent 21ab7c6
commit 5595217
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Showing 2 changed files with 18 additions and 9 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 6c2af35820f100bde7b9de8a00a76faa7af6bede
+refs/heads/master: b5229dbb857f61d77d8d4048d9033387a5411b8e
diff --git a/trunk/arch/i386/pci/mmconfig-shared.c b/trunk/arch/i386/pci/mmconfig-shared.c
@@ -60,14 +60,19 @@ static const char __init *pci_mmcfg_e7520(void)
 	u32 win;
 	pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0xce, 2, &win);
 
-	pci_mmcfg_config_num = 1;
-	pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
-	if (!pci_mmcfg_config)
-		return NULL;
-	pci_mmcfg_config[0].address = (win & 0xf000) << 16;
-	pci_mmcfg_config[0].pci_segment = 0;
-	pci_mmcfg_config[0].start_bus_number = 0;
-	pci_mmcfg_config[0].end_bus_number = 255;
+	win = win & 0xf000;
+	if(win == 0x0000 || win == 0xf000)
+		pci_mmcfg_config_num = 0;
+	else {
+		pci_mmcfg_config_num = 1;
+		pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
+		if (!pci_mmcfg_config)
+			return NULL;
+		pci_mmcfg_config[0].address = win << 16;
+		pci_mmcfg_config[0].pci_segment = 0;
+		pci_mmcfg_config[0].start_bus_number = 0;
+		pci_mmcfg_config[0].end_bus_number = 255;
+	}
 
 	return "Intel Corporation E7520 Memory Controller Hub";
 }
@@ -108,6 +113,10 @@ static const char __init *pci_mmcfg_intel_945(void)
 	if ((pciexbar & mask) & 0x0fffffffU)
 		pci_mmcfg_config_num = 0;
 
+	/* Don't hit the APIC registers and their friends */
+	if ((pciexbar & mask) >= 0xf0000000U)
+		pci_mmcfg_config_num = 0;
+
 	if (pci_mmcfg_config_num) {
 		pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
 		if (!pci_mmcfg_config)