Add generic port support for the parsing of HMAT system locality sub-table.
The attributes will be added to the third array member of the access
coordinates in order to not mix with the existing memory attributes. It only
provides the system locality attributes from initator to the generic port
targets and is missing the rest of the data to the actual memory device.
The complete attributes will be updated when a memory device is
attached and the system locality information is calculated end to end.
Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx>
v2:
- Fix commit log runon sentence. (Jonathan)
- Add a check for memory type for skipping other access levels. (Jonathan)
- NODE_ACCESS_CLASS_GENPORT to NODE_ACCESS_CLASS_GENPORT_SINK. (Jonathan)
---
drivers/acpi/numa/hmat.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c
index e2ab1cce0add..82320c92abed 100644
--- a/drivers/acpi/numa/hmat.c
+++ b/drivers/acpi/numa/hmat.c
@@ -60,6 +60,7 @@ struct target_cache {
enum {
NODE_ACCESS_CLASS_0 = 0,
NODE_ACCESS_CLASS_1,
+ NODE_ACCESS_CLASS_GENPORT_SINK,
NODE_ACCESS_CLASS_MAX,
};
@@ -368,6 +369,15 @@ static __init int hmat_parse_locality(union acpi_subtable_headers *header,
if (mem_hier == ACPI_HMAT_MEMORY) {
target = find_mem_target(targs[targ]);
if (target && target->processor_pxm == inits[init]) {
+ if (*target->device_handle) {
+ hmat_update_target_access(target, type, value,
+ NODE_ACCESS_CLASS_GENPORT_SINK);
+ if ((hmat_loc->flags &
+ ACPI_HMAT_MEMORY_HIERARCHY) ==
+ ACPI_HMAT_MEMORY)
+ continue;
+ }
+
hmat_update_target_access(target, type, value,
NODE_ACCESS_CLASS_0);
/* If the node has a CPU, update access 1 */
