drm/amdgpu: add TMR destory function for psp

From Huang Rui
2c41c968c6f6480860c67210815cadc6507f5014 in linux 5.7.y/5.7.9
c564b8601ae917086751d90f464d5f19d731ece7 in mainline linux

1 files changed, 53 insertions, 4 deletions

diff --git a/sys/dev/pci/drm/amd/amdgpu/amdgpu_psp.c b/sys/dev/pci/drm/amd/amdgpu/amdgpu_psp.c
index d7b825312d1..df5c9f31948 100644
--- a/sys/dev/pci/drm/amd/amdgpu/amdgpu_psp.c
+++ b/sys/dev/pci/drm/amd/amdgpu/amdgpu_psp.c
@@ -370,6 +370,52 @@ static int psp_tmr_load(struct psp_context *psp)
 	return ret;
 }
 
+static void psp_prep_tmr_unload_cmd_buf(struct psp_context *psp,
+					struct psp_gfx_cmd_resp *cmd)
+{
+	if (amdgpu_sriov_vf(psp->adev))
+		cmd->cmd_id = GFX_CMD_ID_DESTROY_VMR;
+	else
+		cmd->cmd_id = GFX_CMD_ID_DESTROY_TMR;
+}
+
+static int psp_tmr_unload(struct psp_context *psp)
+{
+	int ret;
+	struct psp_gfx_cmd_resp *cmd;
+
+	cmd = kzalloc(sizeof(struct psp_gfx_cmd_resp), GFP_KERNEL);
+	if (!cmd)
+		return -ENOMEM;
+
+	psp_prep_tmr_unload_cmd_buf(psp, cmd);
+	DRM_INFO("free PSP TMR buffer\n");
+
+	ret = psp_cmd_submit_buf(psp, NULL, cmd,
+				 psp->fence_buf_mc_addr);
+
+	kfree(cmd);
+
+	return ret;
+}
+
+static int psp_tmr_terminate(struct psp_context *psp)
+{
+	int ret;
+	void *tmr_buf;
+	void **pptr;
+
+	ret = psp_tmr_unload(psp);
+	if (ret)
+		return ret;
+
+	/* free TMR memory buffer */
+	pptr = amdgpu_sriov_vf(psp->adev) ? &tmr_buf : NULL;
+	amdgpu_bo_free_kernel(&psp->tmr_bo, &psp->tmr_mc_addr, pptr);
+
+	return 0;
+}
+
 static void psp_prep_asd_load_cmd_buf(struct psp_gfx_cmd_resp *cmd,
 				uint64_t asd_mc, uint32_t size)
 {
@@ -1575,8 +1621,6 @@ static int psp_hw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 	struct psp_context *psp = &adev->psp;
-	void *tmr_buf;
-	void **pptr;
 
 	if (psp->adev->psp.ta_fw) {
 		psp_ras_terminate(psp);
@@ -1586,10 +1630,9 @@ static int psp_hw_fini(void *handle)
 
 	psp_asd_unload(psp);
 
+	psp_tmr_terminate(psp);
 	psp_ring_destroy(psp, PSP_RING_TYPE__KM);
 
-	pptr = amdgpu_sriov_vf(psp->adev) ? &tmr_buf : NULL;
-	amdgpu_bo_free_kernel(&psp->tmr_bo, &psp->tmr_mc_addr, pptr);
 	amdgpu_bo_free_kernel(&psp->fw_pri_bo,
 			      &psp->fw_pri_mc_addr, &psp->fw_pri_buf);
 	amdgpu_bo_free_kernel(&psp->fence_buf_bo,
@@ -1636,6 +1679,12 @@ static int psp_suspend(void *handle)
 		}
 	}
 
+	ret = psp_tmr_terminate(psp);
+	if (ret) {
+		DRM_ERROR("Falied to terminate tmr\n");
+		return ret;
+	}
+
 	ret = psp_ring_stop(psp, PSP_RING_TYPE__KM);
 	if (ret) {
 		DRM_ERROR("PSP ring stop failed\n");