*
*/
#include <linux/module.h>
-#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/acpi.h>
#include <acpi/acpi_bus.h>
-#include <acpi/acmacros.h>
+
+#define PREFIX "ACPI: "
#define ACPI_NUMA 0x80000000
#define _COMPONENT ACPI_NUMA
- ACPI_MODULE_NAME ("numa")
+ACPI_MODULE_NAME("numa");
+
+static nodemask_t nodes_found_map = NODE_MASK_NONE;
+
+/* maps to convert between proximity domain and logical node ID */
+static int pxm_to_node_map[MAX_PXM_DOMAINS]
+ = { [0 ... MAX_PXM_DOMAINS - 1] = NID_INVAL };
+static int node_to_pxm_map[MAX_NUMNODES]
+ = { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
+
+int pxm_to_node(int pxm)
+{
+ if (pxm < 0)
+ return NID_INVAL;
+ return pxm_to_node_map[pxm];
+}
+
+int node_to_pxm(int node)
+{
+ if (node < 0)
+ return PXM_INVAL;
+ return node_to_pxm_map[node];
+}
+
+void __acpi_map_pxm_to_node(int pxm, int node)
+{
+ pxm_to_node_map[pxm] = node;
+ node_to_pxm_map[node] = pxm;
+}
+
+int acpi_map_pxm_to_node(int pxm)
+{
+ int node = pxm_to_node_map[pxm];
+
+ if (node < 0){
+ if (nodes_weight(nodes_found_map) >= MAX_NUMNODES)
+ return NID_INVAL;
+ node = first_unset_node(nodes_found_map);
+ __acpi_map_pxm_to_node(pxm, node);
+ node_set(node, nodes_found_map);
+ }
-extern int __init acpi_table_parse_madt_family (enum acpi_table_id id, unsigned long madt_size, int entry_id, acpi_madt_entry_handler handler, unsigned int max_entries);
+ return node;
+}
+
+#if 0
+void __cpuinit acpi_unmap_pxm_to_node(int node)
+{
+ int pxm = node_to_pxm_map[node];
+ pxm_to_node_map[pxm] = NID_INVAL;
+ node_to_pxm_map[node] = PXM_INVAL;
+ node_clear(node, nodes_found_map);
+}
+#endif /* 0 */
-void __init
-acpi_table_print_srat_entry (
- acpi_table_entry_header *header)
+static void __init
+acpi_table_print_srat_entry(struct acpi_subtable_header *header)
{
- ACPI_FUNCTION_NAME ("acpi_table_print_srat_entry");
+ ACPI_FUNCTION_NAME("acpi_table_print_srat_entry");
if (!header)
return;
switch (header->type) {
- case ACPI_SRAT_PROCESSOR_AFFINITY:
+ case ACPI_SRAT_TYPE_CPU_AFFINITY:
#ifdef ACPI_DEBUG_OUTPUT
- {
- struct acpi_table_processor_affinity *p =
- (struct acpi_table_processor_affinity*) header;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
- p->apic_id, p->lsapic_eid, p->proximity_domain,
- p->flags.enabled?"enabled":"disabled"));
- }
-#endif /* ACPI_DEBUG_OUTPUT */
+ {
+ struct acpi_srat_cpu_affinity *p =
+ (struct acpi_srat_cpu_affinity *)header;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "SRAT Processor (id[0x%02x] eid[0x%02x]) in proximity domain %d %s\n",
+ p->apic_id, p->local_sapic_eid,
+ p->proximity_domain_lo,
+ (p->flags & ACPI_SRAT_CPU_ENABLED)?
+ "enabled" : "disabled"));
+ }
+#endif /* ACPI_DEBUG_OUTPUT */
break;
- case ACPI_SRAT_MEMORY_AFFINITY:
+ case ACPI_SRAT_TYPE_MEMORY_AFFINITY:
#ifdef ACPI_DEBUG_OUTPUT
- {
- struct acpi_table_memory_affinity *p =
- (struct acpi_table_memory_affinity*) header;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "SRAT Memory (0x%08x%08x length 0x%08x%08x type 0x%x) in proximity domain %d %s%s\n",
- p->base_addr_hi, p->base_addr_lo, p->length_hi, p->length_lo,
- p->memory_type, p->proximity_domain,
- p->flags.enabled ? "enabled" : "disabled",
- p->flags.hot_pluggable ? " hot-pluggable" : ""));
- }
-#endif /* ACPI_DEBUG_OUTPUT */
+ {
+ struct acpi_srat_mem_affinity *p =
+ (struct acpi_srat_mem_affinity *)header;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "SRAT Memory (0x%lx length 0x%lx) in proximity domain %d %s%s\n",
+ (unsigned long)p->base_address,
+ (unsigned long)p->length,
+ p->proximity_domain,
+ (p->flags & ACPI_SRAT_MEM_ENABLED)?
+ "enabled" : "disabled",
+ (p->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE)?
+ " hot-pluggable" : ""));
+ }
+#endif /* ACPI_DEBUG_OUTPUT */
break;
+ case ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY:
+#ifdef ACPI_DEBUG_OUTPUT
+ {
+ struct acpi_srat_x2apic_cpu_affinity *p =
+ (struct acpi_srat_x2apic_cpu_affinity *)header;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "SRAT Processor (x2apicid[0x%08x]) in"
+ " proximity domain %d %s\n",
+ p->apic_id,
+ p->proximity_domain,
+ (p->flags & ACPI_SRAT_CPU_ENABLED) ?
+ "enabled" : "disabled"));
+ }
+#endif /* ACPI_DEBUG_OUTPUT */
+ break;
default:
- printk(KERN_WARNING PREFIX "Found unsupported SRAT entry (type = 0x%x)\n",
- header->type);
+ printk(KERN_WARNING PREFIX
+ "Found unsupported SRAT entry (type = 0x%x)\n",
+ header->type);
break;
}
}
+/*
+ * A lot of BIOS fill in 10 (= no distance) everywhere. This messes
+ * up the NUMA heuristics which wants the local node to have a smaller
+ * distance than the others.
+ * Do some quick checks here and only use the SLIT if it passes.
+ */
+static __init int slit_valid(struct acpi_table_slit *slit)
+{
+ int i, j;
+ int d = slit->locality_count;
+ for (i = 0; i < d; i++) {
+ for (j = 0; j < d; j++) {
+ u8 val = slit->entry[d*i + j];
+ if (i == j) {
+ if (val != LOCAL_DISTANCE)
+ return 0;
+ } else if (val <= LOCAL_DISTANCE)
+ return 0;
+ }
+ }
+ return 1;
+}
-static int __init
-acpi_parse_slit (unsigned long phys_addr, unsigned long size)
+static int __init acpi_parse_slit(struct acpi_table_header *table)
{
- struct acpi_table_slit *slit;
- u32 localities;
+ struct acpi_table_slit *slit;
- if (!phys_addr || !size)
+ if (!table)
return -EINVAL;
- slit = (struct acpi_table_slit *) __va(phys_addr);
-
- /* downcast just for %llu vs %lu for i386/ia64 */
- localities = (u32) slit->localities;
+ slit = (struct acpi_table_slit *)table;
+ if (!slit_valid(slit)) {
+ printk(KERN_INFO "ACPI: SLIT table looks invalid. Not used.\n");
+ return -EINVAL;
+ }
acpi_numa_slit_init(slit);
return 0;
}
+void __init __attribute__ ((weak))
+acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
+{
+ printk(KERN_WARNING PREFIX
+ "Found unsupported x2apic [0x%08x] SRAT entry\n", pa->apic_id);
+ return;
+}
+
static int __init
-acpi_parse_processor_affinity (
- acpi_table_entry_header *header,
- const unsigned long end)
+acpi_parse_x2apic_affinity(struct acpi_subtable_header *header,
+ const unsigned long end)
{
- struct acpi_table_processor_affinity *processor_affinity;
+ struct acpi_srat_x2apic_cpu_affinity *processor_affinity;
- processor_affinity = (struct acpi_table_processor_affinity*) header;
+ processor_affinity = (struct acpi_srat_x2apic_cpu_affinity *)header;
if (!processor_affinity)
return -EINVAL;
acpi_table_print_srat_entry(header);
/* let architecture-dependent part to do it */
- acpi_numa_processor_affinity_init(processor_affinity);
+ acpi_numa_x2apic_affinity_init(processor_affinity);
return 0;
}
+static int __init
+acpi_parse_processor_affinity(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_srat_cpu_affinity *processor_affinity;
+
+ processor_affinity = (struct acpi_srat_cpu_affinity *)header;
+ if (!processor_affinity)
+ return -EINVAL;
+
+ acpi_table_print_srat_entry(header);
+
+ /* let architecture-dependent part to do it */
+ acpi_numa_processor_affinity_init(processor_affinity);
+
+ return 0;
+}
static int __init
-acpi_parse_memory_affinity (
- acpi_table_entry_header *header,
- const unsigned long end)
+acpi_parse_memory_affinity(struct acpi_subtable_header * header,
+ const unsigned long end)
{
- struct acpi_table_memory_affinity *memory_affinity;
+ struct acpi_srat_mem_affinity *memory_affinity;
- memory_affinity = (struct acpi_table_memory_affinity*) header;
+ memory_affinity = (struct acpi_srat_mem_affinity *)header;
if (!memory_affinity)
return -EINVAL;
return 0;
}
-
-static int __init
-acpi_parse_srat (unsigned long phys_addr, unsigned long size)
+static int __init acpi_parse_srat(struct acpi_table_header *table)
{
- struct acpi_table_srat *srat;
+ struct acpi_table_srat *srat;
- if (!phys_addr || !size)
+ if (!table)
return -EINVAL;
- srat = (struct acpi_table_srat *) __va(phys_addr);
+ srat = (struct acpi_table_srat *)table;
return 0;
}
-
-int __init
-acpi_table_parse_srat (
- enum acpi_srat_entry_id id,
- acpi_madt_entry_handler handler,
- unsigned int max_entries)
+static int __init
+acpi_table_parse_srat(enum acpi_srat_type id,
+ acpi_table_entry_handler handler, unsigned int max_entries)
{
- return acpi_table_parse_madt_family(ACPI_SRAT, sizeof(struct acpi_table_srat),
- id, handler, max_entries);
+ return acpi_table_parse_entries(ACPI_SIG_SRAT,
+ sizeof(struct acpi_table_srat), id,
+ handler, max_entries);
}
-
-int __init
-acpi_numa_init(void)
+int __init acpi_numa_init(void)
{
- int result;
-
/* SRAT: Static Resource Affinity Table */
- result = acpi_table_parse(ACPI_SRAT, acpi_parse_srat);
-
- if (result > 0) {
- result = acpi_table_parse_srat(ACPI_SRAT_PROCESSOR_AFFINITY,
- acpi_parse_processor_affinity,
- NR_CPUS);
- result = acpi_table_parse_srat(ACPI_SRAT_MEMORY_AFFINITY,
- acpi_parse_memory_affinity,
- NR_NODE_MEMBLKS); // IA64 specific
+ if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) {
+ acpi_table_parse_srat(ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY,
+ acpi_parse_x2apic_affinity, NR_CPUS);
+ acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY,
+ acpi_parse_processor_affinity, NR_CPUS);
+ acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY,
+ acpi_parse_memory_affinity,
+ NR_NODE_MEMBLKS);
}
/* SLIT: System Locality Information Table */
- result = acpi_table_parse(ACPI_SLIT, acpi_parse_slit);
+ acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit);
acpi_numa_arch_fixup();
return 0;
}
-int
-acpi_get_pxm(acpi_handle h)
+int acpi_get_pxm(acpi_handle h)
{
- unsigned long pxm;
+ unsigned long long pxm;
acpi_status status;
acpi_handle handle;
acpi_handle phandle = h;
handle = phandle;
status = acpi_evaluate_integer(handle, "_PXM", NULL, &pxm);
if (ACPI_SUCCESS(status))
- return (int)pxm;
+ return pxm;
status = acpi_get_parent(handle, &phandle);
- } while(ACPI_SUCCESS(status));
+ } while (ACPI_SUCCESS(status));
return -1;
}
-EXPORT_SYMBOL(acpi_get_pxm);
+
+int acpi_get_node(acpi_handle *handle)
+{
+ int pxm, node = -1;
+
+ pxm = acpi_get_pxm(handle);
+ if (pxm >= 0 && pxm < MAX_PXM_DOMAINS)
+ node = acpi_map_pxm_to_node(pxm);
+
+ return node;
+}
+EXPORT_SYMBOL(acpi_get_node);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff