[PATCH 2/2] drm/amdgpu: Change kiq ring initialize sequence on gfx9

[Rex Zhu]

1. initialize kiq before initialize gfx ring.
2. set kiq ring ready immediately when kiq initialize
   successfully.
3. split function gfx_v9_0_kiq_resume into two functions.
     gfx_v9_0_kiq_resume is for kiq initialize.
     gfx_v9_0_kcq_resume is for kcq initialize.

Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 38 ++++++++++++++++++++++-------------
 1 file changed, 24 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 5990e5dc..ed1868a 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -2684,7 +2684,6 @@ static int gfx_v9_0_kiq_kcq_enable(struct amdgpu_device *adev)
 		queue_mask |= (1ull << i);
 	}
 
-	kiq_ring->ready = true;
 	r = amdgpu_ring_alloc(kiq_ring, (7 * adev->gfx.num_compute_rings) + 8);
 	if (r) {
 		DRM_ERROR("Failed to lock KIQ (%d).\n", r);
@@ -3091,26 +3090,33 @@ static int gfx_v9_0_kcq_init_queue(struct amdgpu_ring *ring)
 
 static int gfx_v9_0_kiq_resume(struct amdgpu_device *adev)
 {
-	struct amdgpu_ring *ring = NULL;
-	int r = 0, i;
-
-	gfx_v9_0_cp_compute_enable(adev, true);
+	struct amdgpu_ring *ring;
+	int r;
 
 	ring = &adev->gfx.kiq.ring;
 
 	r = amdgpu_bo_reserve(ring->mqd_obj, false);
 	if (unlikely(r != 0))
-		goto done;
+		return r;
 
 	r = amdgpu_bo_kmap(ring->mqd_obj, (void **)&ring->mqd_ptr);
-	if (!r) {
-		r = gfx_v9_0_kiq_init_queue(ring);
-		amdgpu_bo_kunmap(ring->mqd_obj);
-		ring->mqd_ptr = NULL;
-	}
+	if (unlikely(r != 0))
+		return r;
+
+	gfx_v9_0_kiq_init_queue(ring);
+	amdgpu_bo_kunmap(ring->mqd_obj);
+	ring->mqd_ptr = NULL;
 	amdgpu_bo_unreserve(ring->mqd_obj);
-	if (r)
-		goto done;
+	ring->ready = true;
+	return 0;
+}
+
+static int gfx_v9_0_kcq_resume(struct amdgpu_device *adev)
+{
+	struct amdgpu_ring *ring = NULL;
+	int r = 0, i;
+
+	gfx_v9_0_cp_compute_enable(adev, true);
 
 	for (i = 0; i < adev->gfx.num_compute_rings; i++) {
 		ring = &adev->gfx.compute_ring[i];
@@ -3153,11 +3159,15 @@ static int gfx_v9_0_cp_resume(struct amdgpu_device *adev)
 			return r;
 	}
 
+	r = gfx_v9_0_kiq_resume(adev);
+	if (r)
+		return r;
+
 	r = gfx_v9_0_cp_gfx_resume(adev);
 	if (r)
 		return r;
 
-	r = gfx_v9_0_kiq_resume(adev);
+	r = gfx_v9_0_kcq_resume(adev);
 	if (r)
 		return r;
 
-- 
1.9.1