drm/amdgpu: Refine gfx_v9_0_kcq_disable function

Send all kcq unmap_queue packets and then wait for
complete.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 37c95c4..21e66f8 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -3216,28 +3216,29 @@ static int gfx_v9_0_hw_init(void *handle)
        return r;
 }
 
-static int gfx_v9_0_kcq_disable(struct amdgpu_ring *kiq_ring,struct amdgpu_ring *ring)
+static int gfx_v9_0_kcq_disable(struct amdgpu_device *adev)
 {
-       int r;
+       int r, i;
+       struct amdgpu_ring *kiq_ring = &adev->gfx.kiq.ring;
 
-       r = amdgpu_ring_alloc(kiq_ring, 6);
-       if (r) {
+       r = amdgpu_ring_alloc(kiq_ring, 6 * adev->gfx.num_compute_rings);
+       if (r)
                DRM_ERROR("Failed to lock KIQ (%d).\n", r);
-               return r;
-       }
 
-       /* unmap queues */
-       amdgpu_ring_write(kiq_ring, PACKET3(PACKET3_UNMAP_QUEUES, 4));
-       amdgpu_ring_write(kiq_ring, /* Q_sel: 0, vmid: 0, engine: 0, num_Q: 1 */
+       for (i = 0; i < adev->gfx.num_compute_rings; i++) {
+               struct amdgpu_ring *ring = &adev->gfx.compute_ring[i];
+
+               amdgpu_ring_write(kiq_ring, PACKET3(PACKET3_UNMAP_QUEUES, 4));
+               amdgpu_ring_write(kiq_ring, /* Q_sel: 0, vmid: 0, engine: 0, num_Q: 1 */
                                                PACKET3_UNMAP_QUEUES_ACTION(1) | /* RESET_QUEUES */
                                                PACKET3_UNMAP_QUEUES_QUEUE_SEL(0) |
                                                PACKET3_UNMAP_QUEUES_ENGINE_SEL(0) |
                                                PACKET3_UNMAP_QUEUES_NUM_QUEUES(1));
-       amdgpu_ring_write(kiq_ring, PACKET3_UNMAP_QUEUES_DOORBELL_OFFSET0(ring->doorbell_index));
-       amdgpu_ring_write(kiq_ring, 0);
-       amdgpu_ring_write(kiq_ring, 0);
-       amdgpu_ring_write(kiq_ring, 0);
-
+               amdgpu_ring_write(kiq_ring, PACKET3_UNMAP_QUEUES_DOORBELL_OFFSET0(ring->doorbell_index));
+               amdgpu_ring_write(kiq_ring, 0);
+               amdgpu_ring_write(kiq_ring, 0);
+               amdgpu_ring_write(kiq_ring, 0);
+       }
        r = amdgpu_ring_test_ring(kiq_ring);
        if (r)
                DRM_ERROR("KCQ disable failed\n");
@@ -3248,14 +3249,12 @@ static int gfx_v9_0_kcq_disable(struct amdgpu_ring *kiq_ring,struct amdgpu_ring
 static int gfx_v9_0_hw_fini(void *handle)
 {
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
-       int i;
 
        amdgpu_irq_put(adev, &adev->gfx.priv_reg_irq, 0);
        amdgpu_irq_put(adev, &adev->gfx.priv_inst_irq, 0);
 
        /* disable KCQ to avoid CPC touch memory not valid anymore */
-       for (i = 0; i < adev->gfx.num_compute_rings; i++)
-               gfx_v9_0_kcq_disable(&adev->gfx.kiq.ring, &adev->gfx.compute_ring[i]);
+       gfx_v9_0_kcq_disable(adev);
 
        if (amdgpu_sriov_vf(adev)) {
                gfx_v9_0_cp_gfx_enable(adev, false);