*
*/
#include <linux/module.h>
-#include <linux/config.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#define _COMPONENT ACPI_NUMA
ACPI_MODULE_NAME("numa")
+static nodemask_t nodes_found_map = NODE_MASK_NONE;
+#define PXM_INVAL -1
+#define NID_INVAL -1
+
+/* maps to convert between proximity domain and logical node ID */
+int __cpuinitdata pxm_to_node_map[MAX_PXM_DOMAINS]
+ = { [0 ... MAX_PXM_DOMAINS - 1] = NID_INVAL };
+int __cpuinitdata node_to_pxm_map[MAX_NUMNODES]
+ = { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
+
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);
+int __cpuinit pxm_to_node(int pxm)
+{
+ if (pxm < 0)
+ return NID_INVAL;
+ return pxm_to_node_map[pxm];
+}
+
+int __cpuinit node_to_pxm(int node)
+{
+ if (node < 0)
+ return PXM_INVAL;
+ return node_to_pxm_map[node];
+}
+
+int __cpuinit 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);
+ pxm_to_node_map[pxm] = node;
+ node_to_pxm_map[node] = pxm;
+ node_set(node, nodes_found_map);
+ }
+
+ return node;
+}
+
+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);
+}
+
void __init acpi_table_print_srat_entry(acpi_table_entry_header * header)
{
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));
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)
+ node = acpi_map_pxm_to_node(pxm);
+
+ return node;
+}
+EXPORT_SYMBOL(acpi_get_node);