mirror of
git://nv-tegra.nvidia.com/linux-nv-oot.git
synced 2025-12-24 02:01:36 +03:00
35242999ff
In current code RPC ack events are handled by thread issuing RPC but Async-IPC events are handled in the bottom-half with interrupt disabled. This may delay delivery of RPC ack if async-IPC handling is hogging the CPU. It can also lead to a race condition where the RPC caller takes the lock, issues a RPC and waits for a reply. And in-between KMD receives an Async IPC and wants to take the same lock. As IPC code is running with interrupt disabled, RPC-reply interrupt will not be notified and will result in a deadlock. This patch creates a Workqueue to handle Async IPC events. JIRA TDS-6381 Change-Id: If7d69ef50298ad9364e9e494a32cf483ecfb744e Signed-off-by: Mahesh Kumar <mahkumar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-t23x/+/2485764 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: svcacv <svcacv@nvidia.com> Reviewed-by: Santosh Galma <galmar@nvidia.com> Reviewed-by: Adeel Raza <araza@nvidia.com> Reviewed-by: Arun Swain <arswain@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit
88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 2019-2021, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*/
|
|
|
|
#include <dce.h>
|
|
#include <dce-util-common.h>
|
|
|
|
/**
|
|
* dce_driver_init - Initializes the various sw components
|
|
* and few hw elements dce.
|
|
*
|
|
* @d : Pointer to tegra_dce struct.
|
|
*
|
|
* Return : 0 if successful.
|
|
*/
|
|
int dce_driver_init(struct tegra_dce *d)
|
|
{
|
|
int ret = 0;
|
|
|
|
ret = dce_boot_interface_init(d);
|
|
if (ret) {
|
|
dce_err(d, "dce boot interface init failed");
|
|
goto err_boot_interface_init;
|
|
}
|
|
|
|
ret = dce_admin_init(d);
|
|
if (ret) {
|
|
dce_err(d, "dce admin interface init failed");
|
|
goto err_admin_interface_init;
|
|
}
|
|
|
|
ret = dce_client_init(d);
|
|
if (ret) {
|
|
dce_err(d, "dce client workqueue init failed");
|
|
goto err_client_init;
|
|
}
|
|
|
|
ret = dce_worker_thread_init(d);
|
|
if (ret) {
|
|
dce_err(d, "dce worker thread init failed");
|
|
goto err_worker_thread_init;
|
|
}
|
|
|
|
return ret;
|
|
|
|
err_worker_thread_init:
|
|
dce_client_deinit(d);
|
|
err_client_init:
|
|
dce_admin_deinit(d);
|
|
err_admin_interface_init:
|
|
dce_boot_interface_deinit(d);
|
|
err_boot_interface_init:
|
|
d->boot_status |= DCE_STATUS_FAILED;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* dce_driver_deinit - Release various sw resources
|
|
* associated with dce.
|
|
*
|
|
* @d : Pointer to tegra_dce struct.
|
|
*
|
|
* Return : Void
|
|
*/
|
|
|
|
void dce_driver_deinit(struct tegra_dce *d)
|
|
{
|
|
/* TODO : Reset DCE ? */
|
|
dce_worker_thread_deinit(d);
|
|
|
|
dce_client_deinit(d);
|
|
|
|
dce_admin_deinit(d);
|
|
|
|
dce_boot_interface_deinit(d);
|
|
|
|
dce_release_fw(d, d->fw_data);
|
|
}
|