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84e1c1d01f
- In DCE_KMD, dce_fsm_start() schedules start of state machine
functionality which involves the waiting for DCE-FW boot completion,
IPC admin setup and communication etc.
- HVRTOS restricts certain functionalities like waiting on events,
acquiring locks, etc in initialize phase.
- Also for HVRTOS we are executing worker queue work in same
thread context directly from where it's called from.
- For above reasons, we need to decouple SW resource allocation and
init logic and actual execution start logic which was part of
dce_driver_init() earlier into 2 phases:
- dce_driver_init()
- This will do all resource allocation/init and will be called
during resource initialization phase.
- Module probe for Linux
- Initialize() context for HVRTOS.
- dce_driver_start()
- This will start actual DCE logic execution after all
resources are allocated and initialized and will be executed
separately.
- In Linux, both will be executed from the same probe
while in HVRTOS, the former is in process initialize
stage and dce_driver_start is run in the
Thread initialize stage.
JIRA TDS-16052
Change-Id: I1176d748bc705106bb0c8ca7e647713abf2d4a00
Signed-off-by: anupamg <anupamg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3192613
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Arun Swain <arswain@nvidia.com>
Reviewed-by: Mahesh Kumar <mahkumar@nvidia.com>
120 lines
2.1 KiB
C
120 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* SPDX-FileCopyrightText: Copyright (c) 2019-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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*/
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#include <dce.h>
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#include <os-utils.h>
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/**
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* dce_driver_start - Start executing DCE logic
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*
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* @d : Pointer to tegra_dce struct.
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*
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* Returns void
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*/
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void dce_driver_start(struct tegra_dce *d)
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{
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dce_fsm_start(d);
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}
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/**
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* dce_driver_stop - Stop executing DCE logic
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*
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* @d : Pointer to tegra_dce struct.
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*
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* Returns void
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*/
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void dce_driver_stop(struct tegra_dce *d)
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{
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dce_fsm_stop(d);
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}
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/**
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* dce_driver_init - Initializes the various sw components
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* and few hw elements dce.
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*
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* @d : Pointer to tegra_dce struct.
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*
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* Return : 0 if successful.
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*/
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int dce_driver_init(struct tegra_dce *d)
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{
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int ret = 0;
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/**
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* Set dce boot satus to false
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*/
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dce_set_boot_complete(d, false);
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ret = dce_boot_interface_init(d);
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if (ret) {
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dce_err(d, "dce boot interface init failed");
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goto err_boot_interface_init;
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}
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ret = dce_admin_init(d);
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if (ret) {
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dce_err(d, "dce admin interface init failed");
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goto err_admin_interface_init;
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}
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ret = dce_client_init(d);
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if (ret) {
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dce_err(d, "dce client workqueue init failed");
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goto err_client_init;
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}
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ret = dce_work_cond_sw_resource_init(d);
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if (ret) {
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dce_err(d, "dce sw resource init failed");
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goto err_sw_init;
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}
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ret = dce_fsm_init(d);
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if (ret) {
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dce_err(d, "dce FSM init failed");
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goto err_fsm_init;
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}
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return ret;
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err_fsm_init:
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dce_work_cond_sw_resource_deinit(d);
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err_sw_init:
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dce_client_deinit(d);
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err_client_init:
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dce_admin_deinit(d);
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err_admin_interface_init:
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dce_boot_interface_deinit(d);
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err_boot_interface_init:
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d->boot_status |= DCE_STATUS_FAILED;
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return ret;
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}
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/**
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* dce_driver_deinit - Release various sw resources
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* associated with dce.
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*
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* @d : Pointer to tegra_dce struct.
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*
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* Return : Void
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*/
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void dce_driver_deinit(struct tegra_dce *d)
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{
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/* TODO : Reset DCE ? */
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dce_fsm_deinit(d);
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dce_work_cond_sw_resource_deinit(d);
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dce_client_deinit(d);
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dce_admin_deinit(d);
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dce_boot_interface_deinit(d);
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dce_release_fw(d, d->fw_data);
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}
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