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Diffstat (limited to 'arch/x86/mm/k8topology_64.c')
-rw-r--r--arch/x86/mm/k8topology_64.c101
1 files changed, 57 insertions, 44 deletions
diff --git a/arch/x86/mm/k8topology_64.c b/arch/x86/mm/k8topology_64.c
index 268f8255280f..970ed579d4e4 100644
--- a/arch/x86/mm/k8topology_64.c
+++ b/arch/x86/mm/k8topology_64.c
@@ -24,6 +24,9 @@
#include <asm/apic.h>
#include <asm/k8.h>
+static struct bootnode __initdata nodes[8];
+static nodemask_t __initdata nodes_parsed = NODE_MASK_NONE;
+
static __init int find_northbridge(void)
{
int num;
@@ -54,18 +57,6 @@ static __init void early_get_boot_cpu_id(void)
* need to get boot_cpu_id so can use that to create apicid_to_node
* in k8_scan_nodes()
*/
- /*
- * Find possible boot-time SMP configuration:
- */
-#ifdef CONFIG_X86_MPPARSE
- early_find_smp_config();
-#endif
-#ifdef CONFIG_ACPI
- /*
- * Read APIC information from ACPI tables.
- */
- early_acpi_boot_init();
-#endif
#ifdef CONFIG_X86_MPPARSE
/*
* get boot-time SMP configuration:
@@ -76,12 +67,26 @@ static __init void early_get_boot_cpu_id(void)
early_init_lapic_mapping();
}
-int __init k8_scan_nodes(unsigned long start, unsigned long end)
+int __init k8_get_nodes(struct bootnode *physnodes)
{
- unsigned numnodes, cores, bits, apicid_base;
+ int i;
+ int ret = 0;
+
+ for_each_node_mask(i, nodes_parsed) {
+ physnodes[ret].start = nodes[i].start;
+ physnodes[ret].end = nodes[i].end;
+ ret++;
+ }
+ return ret;
+}
+
+int __init k8_numa_init(unsigned long start_pfn, unsigned long end_pfn)
+{
+ unsigned long start = PFN_PHYS(start_pfn);
+ unsigned long end = PFN_PHYS(end_pfn);
+ unsigned numnodes;
unsigned long prevbase;
- struct bootnode nodes[8];
- int i, j, nb, found = 0;
+ int i, nb, found = 0;
u32 nodeid, reg;
if (!early_pci_allowed())
@@ -91,16 +96,15 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
if (nb < 0)
return nb;
- printk(KERN_INFO "Scanning NUMA topology in Northbridge %d\n", nb);
+ pr_info("Scanning NUMA topology in Northbridge %d\n", nb);
reg = read_pci_config(0, nb, 0, 0x60);
numnodes = ((reg >> 4) & 0xF) + 1;
if (numnodes <= 1)
return -1;
- printk(KERN_INFO "Number of nodes %d\n", numnodes);
+ pr_info("Number of physical nodes %d\n", numnodes);
- memset(&nodes, 0, sizeof(nodes));
prevbase = 0;
for (i = 0; i < 8; i++) {
unsigned long base, limit;
@@ -111,28 +115,28 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
nodeid = limit & 7;
if ((base & 3) == 0) {
if (i < numnodes)
- printk("Skipping disabled node %d\n", i);
+ pr_info("Skipping disabled node %d\n", i);
continue;
}
if (nodeid >= numnodes) {
- printk("Ignoring excess node %d (%lx:%lx)\n", nodeid,
- base, limit);
+ pr_info("Ignoring excess node %d (%lx:%lx)\n", nodeid,
+ base, limit);
continue;
}
if (!limit) {
- printk(KERN_INFO "Skipping node entry %d (base %lx)\n",
- i, base);
+ pr_info("Skipping node entry %d (base %lx)\n",
+ i, base);
continue;
}
if ((base >> 8) & 3 || (limit >> 8) & 3) {
- printk(KERN_ERR "Node %d using interleaving mode %lx/%lx\n",
- nodeid, (base>>8)&3, (limit>>8) & 3);
+ pr_err("Node %d using interleaving mode %lx/%lx\n",
+ nodeid, (base >> 8) & 3, (limit >> 8) & 3);
return -1;
}
- if (node_isset(nodeid, node_possible_map)) {
- printk(KERN_INFO "Node %d already present. Skipping\n",
- nodeid);
+ if (node_isset(nodeid, nodes_parsed)) {
+ pr_info("Node %d already present, skipping\n",
+ nodeid);
continue;
}
@@ -141,8 +145,8 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
limit |= (1<<24)-1;
limit++;
- if (limit > max_pfn << PAGE_SHIFT)
- limit = max_pfn << PAGE_SHIFT;
+ if (limit > end)
+ limit = end;
if (limit <= base)
continue;
@@ -154,24 +158,24 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
if (limit > end)
limit = end;
if (limit == base) {
- printk(KERN_ERR "Empty node %d\n", nodeid);
+ pr_err("Empty node %d\n", nodeid);
continue;
}
if (limit < base) {
- printk(KERN_ERR "Node %d bogus settings %lx-%lx.\n",
+ pr_err("Node %d bogus settings %lx-%lx.\n",
nodeid, base, limit);
continue;
}
/* Could sort here, but pun for now. Should not happen anyroads. */
if (prevbase > base) {
- printk(KERN_ERR "Node map not sorted %lx,%lx\n",
+ pr_err("Node map not sorted %lx,%lx\n",
prevbase, base);
return -1;
}
- printk(KERN_INFO "Node %d MemBase %016lx Limit %016lx\n",
- nodeid, base, limit);
+ pr_info("Node %d MemBase %016lx Limit %016lx\n",
+ nodeid, base, limit);
found++;
@@ -180,18 +184,29 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
prevbase = base;
- node_set(nodeid, node_possible_map);
+ node_set(nodeid, nodes_parsed);
}
if (!found)
return -1;
+ return 0;
+}
+
+int __init k8_scan_nodes(void)
+{
+ unsigned int bits;
+ unsigned int cores;
+ unsigned int apicid_base;
+ int i;
+ BUG_ON(nodes_empty(nodes_parsed));
+ node_possible_map = nodes_parsed;
memnode_shift = compute_hash_shift(nodes, 8, NULL);
if (memnode_shift < 0) {
- printk(KERN_ERR "No NUMA node hash function found. Contact maintainer\n");
+ pr_err("No NUMA node hash function found. Contact maintainer\n");
return -1;
}
- printk(KERN_INFO "Using node hash shift of %d\n", memnode_shift);
+ pr_info("Using node hash shift of %d\n", memnode_shift);
/* use the coreid bits from early_identify_cpu */
bits = boot_cpu_data.x86_coreid_bits;
@@ -200,14 +215,12 @@ int __init k8_scan_nodes(unsigned long start, unsigned long end)
/* need to get boot_cpu_id early for system with apicid lifting */
early_get_boot_cpu_id();
if (boot_cpu_physical_apicid > 0) {
- printk(KERN_INFO "BSP APIC ID: %02x\n",
- boot_cpu_physical_apicid);
+ pr_info("BSP APIC ID: %02x\n", boot_cpu_physical_apicid);
apicid_base = boot_cpu_physical_apicid;
}
- for (i = 0; i < 8; i++) {
- if (nodes[i].start == nodes[i].end)
- continue;
+ for_each_node_mask(i, node_possible_map) {
+ int j;
e820_register_active_regions(i,
nodes[i].start >> PAGE_SHIFT,
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-30 20:19:10 +0000