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f452d16f44
- completions uses spin lock and disables irq resulting in processor getting blocked to receive mailbox interrupts during IPC synchronization. - current change uses wait queues instead of completions for IPC synchronization to overcome above possibility of IPC blocked on DCE. JIRA TDS-5691 Change-Id: I12e06ff4d31cf47d87e7a9d76d9915e5e2210de6 Signed-off-by: Santosh Reddy Galma <galmar@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-t23x/+/2428661 Reviewed-by: automaticguardword <automaticguardword@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Arun Swain <arswain@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/*
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* Copyright (c) 2019-2020, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef DCE_CLIENT_IPC_INTERNAL_H
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#define DCE_CLIENT_IPC_INTERNAL_H
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#include <linux/platform/tegra/dce/dce-client-ipc.h>
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/**
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* struct tegra_dce_client_ipc - Data Structure to hold client specific ipc
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* data pertaining to IPC type
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*
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* @valid : Tells if the client ipc data held by data structure is valid
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* @data : Pointer to any specific data passed by client during registration
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* for corresponding IPC type
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* @type : Corresponding IPC type as defined in CPU driver
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* @int_type : IPC interface type for above IPC type as defined in CPU driver
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* @d : pointer to OS agnostic dce struct. Stores all runtime info for dce
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* cluster elements
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* @recv_wait : condition variable used for IPC synchronization
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* @complete : atomic variable used for IPC synchronization
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* @callback_fn : function pointer to the callback function passed by the
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* client during registration
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*/
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struct tegra_dce_client_ipc {
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bool valid;
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void *data;
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uint32_t type;
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uint32_t int_type;
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struct tegra_dce *d;
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struct dce_cond recv_wait;
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atomic_t complete;
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tegra_dce_client_ipc_callback_t callback_fn;
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};
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void dce_client_ipc_wakeup(struct tegra_dce *d, u32 ch_type);
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int dce_client_ipc_wait(struct tegra_dce *d, u32 w_type, u32 ch_type);
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#endif
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