drm/amdkfd: Increase queue number per process to 255 on GFX9.4.3

Increase the maximum number of queues that can be created per process
to 255 on GFX 9.4.3. There is no HWS limitation restricting the number
queues that can be created.

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>

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
index a3c23d07c7df5b0639951105cc10591a2ba64a6d..b100933340d27bfe87bc0f4a6e790a9e660f34ef 100644 (file)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -242,6 +242,13 @@ int pqm_create_queue(struct process_queue_manager *pqm,
        enum kfd_queue_type type = properties->type;
        unsigned int max_queues = 127; /* HWS limit */
 
+       /*
+        * On GFX 9.4.3, increase the number of queues that
+        * can be created to 255. No HWS limit on GFX 9.4.3.
+        */
+       if (KFD_GC_VERSION(dev) == IP_VERSION(9, 4, 3))
+               max_queues = 255;
+
        q = NULL;
        kq = NULL;