[PATCH 1/6] drm/amdkfd: Increase queue number per process to 255 on GFX9.4.3

[Alex Deucher]

From: Mukul Joshi <mukul.joshi at amd.com>

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 at amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 7 +++++++
 1 file changed, 7 insertions(+)

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 a3c23d07c7df..b100933340d2 100644
--- 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;
 
-- 
2.40.1