x86/PCI: read root resources from IOH on Intel

[mv-sheeva.git] / arch / x86 / pci / amd_bus.c

diff --git a/arch/x86/pci/amd_bus.c b/arch/x86/pci/amd_bus.c
index 572ee9782f2afdf75ca1af76ae172ce01ec9a3a8..995f36096a42b972b33b22082db1c7d0acb69141 100644 (file)
--- a/arch/x86/pci/amd_bus.c
+++ b/arch/x86/pci/amd_bus.c
@@ -10,6 +10,8 @@
 #include <linux/cpumask.h>
 #endif
 
+#include "bus_numa.h"
+
 /*
  * This discovers the pcibus <-> node mapping on AMD K8.
  * also get peer root bus resource for io,mmio
@@ -17,25 +19,9 @@
 
 #ifdef CONFIG_X86_64
 
-/*
- * sub bus (transparent) will use entres from 3 to store extra from root,
- * so need to make sure have enought slot there, increase PCI_BUS_NUM_RESOURCES?
- */
-#define RES_NUM 16
-struct pci_root_info {
-       char name[12];
-       unsigned int res_num;
-       struct resource res[RES_NUM];
-       int bus_min;
-       int bus_max;
-       int node;
-       int link;
-};
-
-/* 4 at this time, it may become to 32 */
-#define PCI_ROOT_NR 4
-static int pci_root_num;
-static struct pci_root_info pci_root_info[PCI_ROOT_NR];
+int pci_root_num;
+struct pci_root_info pci_root_info[PCI_ROOT_NR];
+static int found_all_numa_early;
 
 void x86_pci_root_bus_res_quirks(struct pci_bus *b)
 {
@@ -48,8 +34,11 @@ void x86_pci_root_bus_res_quirks(struct pci_bus *b)
            b->resource[1] != &iomem_resource)
                return;
 
-       /* if only one root bus, don't need to anything */
-       if (pci_root_num < 2)
+       if (!pci_root_num)
+               return;
+
+       /* for amd, if only one root bus, don't need to do anything */
+       if (pci_root_num < 2 && found_all_numa_early)
                return;
 
        for (i = 0; i < pci_root_num; i++) {
@@ -130,12 +119,15 @@ static void __init update_range(struct res_range *range, size_t start,
        }
 }
 
-static void __init update_res(struct pci_root_info *info, size_t start,
+void __init update_res(struct pci_root_info *info, size_t start,
                              size_t end, unsigned long flags, int merge)
 {
        int i;
        struct resource *res;
 
+       if (start > end)
+               return;
+
        if (!merge)
                goto addit;
 
@@ -230,7 +222,6 @@ static int __init early_fill_mp_bus_info(void)
        int j;
        unsigned bus;
        unsigned slot;
-       int found;
        int node;
        int link;
        int def_node;
@@ -247,7 +238,7 @@ static int __init early_fill_mp_bus_info(void)
        if (!early_pci_allowed())
                return -1;
 
-       found = 0;
+       found_all_numa_early = 0;
        for (i = 0; i < ARRAY_SIZE(pci_probes); i++) {
                u32 id;
                u16 device;
@@ -261,12 +252,12 @@ static int __init early_fill_mp_bus_info(void)
                device = (id>>16) & 0xffff;
                if (pci_probes[i].vendor == vendor &&
                    pci_probes[i].device == device) {
-                       found = 1;
+                       found_all_numa_early = 1;
                        break;
                }
        }
 
-       if (!found)
+       if (!found_all_numa_early)
                return 0;
 
        pci_root_num = 0;
@@ -488,7 +479,7 @@ static int __init early_fill_mp_bus_info(void)
                info = &pci_root_info[i];
                res_num = info->res_num;
                busnum = info->bus_min;
-               printk(KERN_DEBUG "bus: [%02x,%02x] on node %x link %x\n",
+               printk(KERN_DEBUG "bus: [%02x, %02x] on node %x link %x\n",
                       info->bus_min, info->bus_max, info->node, info->link);
                for (j = 0; j < res_num; j++) {
                        res = &info->res[j];