[PATCH 36/36] drm/amdgpu/vcn3: implement ring reset

[Alex Deucher]

Use the new helpers to handle engine resets for VCN.

Untested.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c
index 9fb0d53805892..ec4d2ab75fc4d 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v3_0.c
@@ -110,6 +110,7 @@ static int vcn_v3_0_set_pg_state(struct amdgpu_vcn_inst *vinst,
 				 enum amd_powergating_state state);
 static int vcn_v3_0_pause_dpg_mode(struct amdgpu_vcn_inst *vinst,
 				   struct dpg_pause_state *new_state);
+static int vcn_v3_0_reset(struct amdgpu_vcn_inst *vinst);
 
 static void vcn_v3_0_dec_ring_set_wptr(struct amdgpu_ring *ring);
 static void vcn_v3_0_enc_ring_set_wptr(struct amdgpu_ring *ring);
@@ -289,6 +290,7 @@ static int vcn_v3_0_sw_init(struct amdgpu_ip_block *ip_block)
 
 		if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG)
 			adev->vcn.inst[i].pause_dpg_mode = vcn_v3_0_pause_dpg_mode;
+		adev->vcn.inst[i].reset = vcn_v3_0_reset;
 	}
 
 	if (amdgpu_sriov_vf(adev)) {
@@ -1869,6 +1871,7 @@ static const struct amdgpu_ring_funcs vcn_v3_0_dec_sw_ring_vm_funcs = {
 	.emit_wreg = vcn_dec_sw_ring_emit_wreg,
 	.emit_reg_wait = vcn_dec_sw_ring_emit_reg_wait,
 	.emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
+	.reset = amdgpu_vcn_ring_reset,
 };
 
 static int vcn_v3_0_limit_sched(struct amdgpu_cs_parser *p,
@@ -2033,6 +2036,7 @@ static const struct amdgpu_ring_funcs vcn_v3_0_dec_ring_vm_funcs = {
 	.emit_wreg = vcn_v2_0_dec_ring_emit_wreg,
 	.emit_reg_wait = vcn_v2_0_dec_ring_emit_reg_wait,
 	.emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
+	.reset = amdgpu_vcn_ring_reset,
 };
 
 /**
@@ -2164,6 +2168,26 @@ static void vcn_v3_0_set_enc_ring_funcs(struct amdgpu_device *adev)
 	}
 }
 
+static int vcn_v3_0_reset(struct amdgpu_vcn_inst *vinst)
+{
+	int i, r;
+
+	vcn_v3_0_stop(vinst);
+	vcn_v3_0_start(vinst);
+	r = amdgpu_ring_test_ring(&vinst->ring_dec);
+	if (r)
+		return r;
+	for (i = 0; i < vinst->num_enc_rings; i++) {
+		r = amdgpu_ring_test_ring(&vinst->ring_enc[i]);
+		if (r)
+			return r;
+	}
+	amdgpu_fence_driver_force_completion(&vinst->ring_dec);
+	for (i = 0; i < vinst->num_enc_rings; i++)
+		amdgpu_fence_driver_force_completion(&vinst->ring_enc[i]);
+	return 0;
+}
+
 static bool vcn_v3_0_is_idle(struct amdgpu_ip_block *ip_block)
 {
 	struct amdgpu_device *adev = ip_block->adev;
-- 
2.49.0