[PATCH v3] drm/amdgpu/sriov: Only sriov runtime support use kiq

[Emily Deng]

Move the check into the caller instead of returning an error code here

For sriov, don't use kiq in exclusive mode, as don't know how long time
it will take, some times it will occur exclusive timeout.

Signed-off-by: Emily Deng <Emily.Deng at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 0bf8439..de1467e 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -321,9 +321,6 @@ signed long  amdgpu_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
 	struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 	struct amdgpu_ring *ring = &kiq->ring;
 
-	if (!ring->ready)
-		return -EINVAL;
-
 	spin_lock_irqsave(&kiq->ring_lock, flags);
 
 	amdgpu_ring_alloc(ring, 32);
@@ -389,11 +386,17 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev,
 	for (i = 0; i < AMDGPU_MAX_VMHUBS; ++i) {
 		struct amdgpu_vmhub *hub = &adev->vmhub[i];
 		u32 tmp = gmc_v9_0_get_invalidate_req(vmid);
-
-		r = amdgpu_kiq_reg_write_reg_wait(adev, hub->vm_inv_eng0_req + eng,
-			hub->vm_inv_eng0_ack + eng, tmp, 1 << vmid);
-		if (!r)
-			continue;
+		struct amdgpu_kiq *kiq = &adev->gfx.kiq;
+		struct amdgpu_ring *ring = &kiq->ring;
+
+		if (ring->ready &&
+		    (amdgpu_sriov_runtime(adev) ||
+		     !amdgpu_sriov_vf(adev))) {
+			r = amdgpu_kiq_reg_write_reg_wait(adev, hub->vm_inv_eng0_req + eng,
+				hub->vm_inv_eng0_ack + eng, tmp, 1 << vmid);
+			if (!r)
+				continue;
+		}
 
 		spin_lock(&adev->gmc.invalidate_lock);
 
-- 
2.7.4