[PATCH 12/53] drm/amdgpu/gfx11: add ring reset callbacks

[Alex Deucher]

Add ring reset callbacks for gfx and compute.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
index 4a9766635933..6436f7d680da 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c
@@ -6520,6 +6520,22 @@ static void gfx_v11_0_emit_mem_sync(struct amdgpu_ring *ring)
 	amdgpu_ring_write(ring, gcr_cntl); /* GCR_CNTL */
 }
 
+static int gfx_v11_0_reset_ring(struct amdgpu_ring *ring, unsigned int vmid)
+{
+	int r;
+
+	r = amdgpu_mes_reset_legacy_queue(ring->adev, ring, vmid);
+	if (r)
+		return r;
+
+	/* reset the ring */
+	ring->wptr = 0;
+	*ring->wptr_cpu_addr = 0;
+	amdgpu_ring_clear_ring(ring);
+
+	return amdgpu_ring_test_ring(ring);
+}
+
 static void gfx_v11_ip_print(void *handle, struct drm_printer *p)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
@@ -6721,6 +6737,7 @@ static const struct amdgpu_ring_funcs gfx_v11_0_ring_funcs_gfx = {
 	.emit_reg_write_reg_wait = gfx_v11_0_ring_emit_reg_write_reg_wait,
 	.soft_recovery = gfx_v11_0_ring_soft_recovery,
 	.emit_mem_sync = gfx_v11_0_emit_mem_sync,
+	.reset = gfx_v11_0_reset_ring,
 };
 
 static const struct amdgpu_ring_funcs gfx_v11_0_ring_funcs_compute = {
@@ -6758,6 +6775,7 @@ static const struct amdgpu_ring_funcs gfx_v11_0_ring_funcs_compute = {
 	.emit_reg_write_reg_wait = gfx_v11_0_ring_emit_reg_write_reg_wait,
 	.soft_recovery = gfx_v11_0_ring_soft_recovery,
 	.emit_mem_sync = gfx_v11_0_emit_mem_sync,
+	.reset = gfx_v11_0_reset_ring,
 };
 
 static const struct amdgpu_ring_funcs gfx_v11_0_ring_funcs_kiq = {
-- 
2.45.2