[PATCH 03/11] drm/amdgpu/gfx: add generic handling for disable_kq

[Alex Deucher <alexander.deucher@amd.com>]

Add proper checks for disable_kq functionality in
gfx helper functions.  Add special logic for families
that require the clear state setup.

v2: use ring count as per Felix suggestion

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 3 +++
 drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index a194bf3347cbc..4083b4d0595a2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -1544,6 +1544,9 @@ static ssize_t amdgpu_gfx_set_run_cleaner_shader(struct device *dev,
 	if (adev->in_suspend && !adev->in_runpm)
 		return -EPERM;
 
+	if (adev->gfx.disable_kq)
+		return -ENOTSUPP;
+
 	ret = kstrtol(buf, 0, &value);
 
 	if (ret)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index ddf4533614bac..8fa68a4ac34f1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -483,6 +483,8 @@ struct amdgpu_gfx {
 
 	atomic_t			total_submission_cnt;
 	struct delayed_work		idle_work;
+
+	bool				disable_kq;
 };
 
 struct amdgpu_gfx_ras_reg_entry {
-- 
2.48.1