[PATCH 041/459] drm/amdgpu: Add common gfx func Disable kcq via kiq

[Alex Deucher]

From: Rex Zhu <Rex.Zhu at amd.com>

so can be shared with gfx8 and gfx9

Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 19 +++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h |  1 +
 2 files changed, 20 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index 15e9f120ff84..ad159e06cfb2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -431,6 +431,25 @@ void amdgpu_gfx_mqd_sw_fini(struct amdgpu_device *adev)
 			      &ring->mqd_ptr);
 }
 
+int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev)
+{
+	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
+	struct amdgpu_ring *kiq_ring = &kiq->ring;
+	int i;
+
+	if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues)
+		return -EINVAL;
+
+	if (amdgpu_ring_alloc(kiq_ring, kiq->pmf->unmap_queues_size *
+					adev->gfx.num_compute_rings))
+		return -ENOMEM;
+
+	for (i = 0; i < adev->gfx.num_compute_rings; i++)
+		kiq->pmf->kiq_unmap_queues(kiq_ring, &adev->gfx.compute_ring[i], true);
+
+	return amdgpu_ring_test_ring(kiq_ring);
+}
+
 /* amdgpu_gfx_off_ctrl - Handle gfx off feature enable/disable
  *
  * @adev: amdgpu_device pointer
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index 14d6f01db27b..b22421f2b6fe 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -353,6 +353,7 @@ int amdgpu_gfx_kiq_init(struct amdgpu_device *adev,
 int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev,
 			   unsigned mqd_size);
 void amdgpu_gfx_mqd_sw_fini(struct amdgpu_device *adev);
+int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev);
 
 void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev);
 void amdgpu_gfx_graphics_queue_acquire(struct amdgpu_device *adev);
-- 
2.20.1