drm/amdkfd: Update cache info reporting for GFX v9.4.3

Update cache info reporting in sysfs to report the correct
number of CUs and associated cache information based on
different spatial partitioning modes.
Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdkfd/kfd_crat.h

@@ -79,6 +79,10 @@ struct crat_header {
 #define CRAT_SUBTYPE_IOLINK_AFFINITY		5
 #define CRAT_SUBTYPE_MAX			6
 
+/*
+ * Do not change the value of CRAT_SIBLINGMAP_SIZE from 32
+ * as it breaks the ABI.
+ */
 #define CRAT_SIBLINGMAP_SIZE	32
 
 /*

drivers/gpu/drm/amd/amdkfd/kfd_topology.c

@@ -1596,14 +1596,17 @@ static int fill_in_l1_pcache(struct kfd_cache_properties **props_ext,
 static int fill_in_l2_l3_pcache(struct kfd_cache_properties **props_ext,
 				struct kfd_gpu_cache_info *pcache_info,
 				struct kfd_cu_info *cu_info,
-				int cache_type, unsigned int cu_processor_id)
+				int cache_type, unsigned int cu_processor_id,
+				struct kfd_node *knode)
 {
 	unsigned int cu_sibling_map_mask;
 	int first_active_cu;
-	int i, j, k;
+	int i, j, k, xcc, start, end;
 	struct kfd_cache_properties *pcache = NULL;
 
-	cu_sibling_map_mask = cu_info->cu_bitmap[0][0][0];
+	start = ffs(knode->xcc_mask) - 1;
+	end = start + NUM_XCC(knode->xcc_mask);
+	cu_sibling_map_mask = cu_info->cu_bitmap[start][0][0];
 	cu_sibling_map_mask &=
 		((1 << pcache_info[cache_type].num_cu_shared) - 1);
 	first_active_cu = ffs(cu_sibling_map_mask);
@@ -1638,6 +1641,7 @@ static int fill_in_l2_l3_pcache(struct kfd_cache_properties **props_ext,
 		cu_sibling_map_mask = cu_sibling_map_mask >> (first_active_cu - 1);
 		k = 0;
 
+		for (xcc = start; xcc < end; xcc++) {
 			for (i = 0; i < cu_info->num_shader_engines; i++) {
 				for (j = 0; j < cu_info->num_shader_arrays_per_engine; j++) {
 					pcache->sibling_map[k] = (uint8_t)(cu_sibling_map_mask & 0xFF);
@@ -1646,10 +1650,11 @@ static int fill_in_l2_l3_pcache(struct kfd_cache_properties **props_ext,
 					pcache->sibling_map[k+3] = (uint8_t)((cu_sibling_map_mask >> 24) & 0xFF);
 					k += 4;
 
-				cu_sibling_map_mask = cu_info->cu_bitmap[0][i % 4][j + i / 4];
+					cu_sibling_map_mask = cu_info->cu_bitmap[xcc][i % 4][j + i / 4];
 					cu_sibling_map_mask &= ((1 << pcache_info[cache_type].num_cu_shared) - 1);
 				}
 			}
+		}
 		pcache->sibling_map_size = k;
 		*props_ext = pcache;
 		return 0;
@@ -1665,7 +1670,7 @@ static int fill_in_l2_l3_pcache(struct kfd_cache_properties **props_ext,
 static void kfd_fill_cache_non_crat_info(struct kfd_topology_device *dev, struct kfd_node *kdev)
 {
 	struct kfd_gpu_cache_info *pcache_info = NULL;
-	int i, j, k;
+	int i, j, k, xcc, start, end;
 	int ct = 0;
 	unsigned int cu_processor_id;
 	int ret;
@@ -1699,15 +1704,19 @@ static void kfd_fill_cache_non_crat_info(struct kfd_topology_device *dev, struct
 	 *			then it will consider only one CU from
 	 *			the shared unit
 	 */
+	start = ffs(kdev->xcc_mask) - 1;
+	end = start + NUM_XCC(kdev->xcc_mask);
+
 	for (ct = 0; ct < num_of_cache_types; ct++) {
 		cu_processor_id = gpu_processor_id;
 		if (pcache_info[ct].cache_level == 1) {
+			for (xcc = start; xcc < end; xcc++) {
 				for (i = 0; i < pcu_info->num_shader_engines; i++) {
 					for (j = 0; j < pcu_info->num_shader_arrays_per_engine; j++) {
 						for (k = 0; k < pcu_info->num_cu_per_sh; k += pcache_info[ct].num_cu_shared) {
 
 							ret = fill_in_l1_pcache(&props_ext, pcache_info, pcu_info,
-									pcu_info->cu_bitmap[0][i % 4][j + i / 4], ct,
+										pcu_info->cu_bitmap[xcc][i % 4][j + i / 4], ct,
 										cu_processor_id, k);
 
 							if (ret < 0)
@@ -1727,9 +1736,10 @@ static void kfd_fill_cache_non_crat_info(struct kfd_topology_device *dev, struct
 						}
 					}
 				}
+			}
 		} else {
 			ret = fill_in_l2_l3_pcache(&props_ext, pcache_info,
-								pcu_info, ct, cu_processor_id);
+					pcu_info, ct, cu_processor_id, kdev);
 
 			if (ret < 0)
 				break;

drivers/gpu/drm/amd/amdkfd/kfd_topology.h

@@ -89,7 +89,7 @@ struct kfd_mem_properties {
 	struct attribute	attr;
 };
 
-#define CACHE_SIBLINGMAP_SIZE 64
+#define CACHE_SIBLINGMAP_SIZE 128
 
 struct kfd_cache_properties {
 	struct list_head	list;