[PATCH 34/36] drm/amdgpu/vcn2: 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_v2_0.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
index 148b651be7ca7..4ab02533f2fa0 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v2_0.c
@@ -98,6 +98,8 @@ static int vcn_v2_0_set_pg_state(struct amdgpu_vcn_inst *vinst,
 static int vcn_v2_0_pause_dpg_mode(struct amdgpu_vcn_inst *vinst,
 				   struct dpg_pause_state *new_state);
 static int vcn_v2_0_start_sriov(struct amdgpu_device *adev);
+static int vcn_v2_0_reset(struct amdgpu_vcn_inst *vinst);
+
 /**
  * vcn_v2_0_early_init - set function pointers and load microcode
  *
@@ -213,6 +215,7 @@ static int vcn_v2_0_sw_init(struct amdgpu_ip_block *ip_block)
 	}
 
 	adev->vcn.inst[0].pause_dpg_mode = vcn_v2_0_pause_dpg_mode;
+	adev->vcn.inst[0].reset = vcn_v2_0_reset;
 
 	r = amdgpu_virt_alloc_mm_table(adev);
 	if (r)
@@ -1355,6 +1358,26 @@ static int vcn_v2_0_pause_dpg_mode(struct amdgpu_vcn_inst *vinst,
 	return 0;
 }
 
+static int vcn_v2_0_reset(struct amdgpu_vcn_inst *vinst)
+{
+	int i, r;
+
+	vcn_v2_0_stop(vinst);
+	vcn_v2_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_v2_0_is_idle(struct amdgpu_ip_block *ip_block)
 {
 	struct amdgpu_device *adev = ip_block->adev;
@@ -2176,6 +2199,7 @@ static const struct amdgpu_ring_funcs vcn_v2_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,
 };
 
 static const struct amdgpu_ring_funcs vcn_v2_0_enc_ring_vm_funcs = {
@@ -2205,6 +2229,7 @@ static const struct amdgpu_ring_funcs vcn_v2_0_enc_ring_vm_funcs = {
 	.emit_wreg = vcn_v2_0_enc_ring_emit_wreg,
 	.emit_reg_wait = vcn_v2_0_enc_ring_emit_reg_wait,
 	.emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
+	.reset = amdgpu_vcn_ring_reset,
 };
 
 static void vcn_v2_0_set_dec_ring_funcs(struct amdgpu_device *adev)
-- 
2.49.0