drm/amdkfd: Set TG_CHUNK_SIZE for GC 9.4.3

On GC 9.4.3, DW 41 in MQD is repurposed as compute_tg_chunk_size
for cooperative dispatch. When it's a AQL queue, set compute_tg_chunk_size
as 1 to spread work groups evenly among XCCs. If it's PM4 queue, unset
compute_tg_chunk_size to disable cooperative mode.

v3: set compute_tg_chunk_size as 1 instead of #CUs per XCC
v2: set compute_tg_chunk_size as #CUs per XCC instead of total wave
slots per XCC

Signed-off-by: Amber Lin <Amber.Lin@amd.com>
Reviewed-by: Sean Keely <Sean.Keely@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
index 0778e58..4dfae19 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
@@ -135,6 +135,7 @@ static void init_mqd(struct mqd_manager *mm, void **mqd,
 {
        uint64_t addr;
        struct v9_mqd *m;
+       struct amdgpu_device *adev = (struct amdgpu_device *)mm->dev->adev;
 
        m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr;
        addr = mqd_mem_obj->gpu_addr;
@@ -167,6 +168,20 @@ static void init_mqd(struct mqd_manager *mm, void **mqd,
        if (q->format == KFD_QUEUE_FORMAT_AQL) {
                m->cp_hqd_aql_control =
                        1 << CP_HQD_AQL_CONTROL__CONTROL0__SHIFT;
+               if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 3)) {
+                       /* On GC 9.4.3, DW 41 is re-purposed as
+                        * compute_tg_chunk_size.
+                        * TODO: review this setting when active CUs in the
+                        * partition play a role
+                        */
+                       m->compute_static_thread_mgmt_se6 = 1;
+               }
+       } else {
+               /* PM4 queue */
+               if (adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 3)) {
+                       m->compute_static_thread_mgmt_se6 = 0;
+                       /* TODO: program pm4_target_xcc */
+               }
        }
 
        if (q->tba_addr) {