[PATCH 2/3] drm/amdgpu: free up the first paging queue

[Kuehling, Felix]

I think this would break Raven, which only has one SDMA engine.

Regards,
  Felix

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Christian König
Sent: Tuesday, March 12, 2019 8:38 AM
To: amd-gfx at lists.freedesktop.org
Subject: [PATCH 2/3] drm/amdgpu: free up the first paging queue

We need the first paging queue to handle page faults.

Signed-off-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 3ac5abe937f4..bed18e7bbc36 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -2266,7 +2266,7 @@ static void sdma_v4_0_set_buffer_funcs(struct amdgpu_device *adev)  {
 	adev->mman.buffer_funcs = &sdma_v4_0_buffer_funcs;
 	if (adev->sdma.has_page_queue)
-		adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].page;
+		adev->mman.buffer_funcs_ring = &adev->sdma.instance[1].page;
 	else
 		adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;  } @@ -2285,15 +2285,19 @@ static void sdma_v4_0_set_vm_pte_funcs(struct amdgpu_device *adev)
 	unsigned i;
 
 	adev->vm_manager.vm_pte_funcs = &sdma_v4_0_vm_pte_funcs;
-	for (i = 0; i < adev->sdma.num_instances; i++) {
-		if (adev->sdma.has_page_queue)
-			sched = &adev->sdma.instance[i].page.sched;
-		else
-			sched = &adev->sdma.instance[i].ring.sched;
-		adev->vm_manager.vm_pte_rqs[i] =
+	if (adev->sdma.has_page_queue) {
+		sched = &adev->sdma.instance[1].page.sched;
+		adev->vm_manager.vm_pte_rqs[0] =
 			&sched->sched_rq[DRM_SCHED_PRIORITY_KERNEL];
+		adev->vm_manager.vm_pte_num_rqs = 1;
+	} else {
+		for (i = 0; i < adev->sdma.num_instances; i++) {
+			sched = &adev->sdma.instance[i].ring.sched;
+			adev->vm_manager.vm_pte_rqs[i] =
+				&sched->sched_rq[DRM_SCHED_PRIORITY_KERNEL];
+		}
+		adev->vm_manager.vm_pte_num_rqs = adev->sdma.num_instances;
 	}
-	adev->vm_manager.vm_pte_num_rqs = adev->sdma.num_instances;
 }
 
 const struct amdgpu_ip_block_version sdma_v4_0_ip_block = {
--
2.17.1

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