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606f03fbf2
For T23x, we have a separate R5 based cluster named as Display Controller Engine(DCE) to run our Display RM code. This driver will run on CPU with the following functionality: Via debugfs for test and bring-up purposes: 1. Reads the DCE firmware image into DRAM. 2. Sets up DCE AST to cover the DCE firmware image. 3. Sets up R5 reset vector to point to DCE firmware entry point 4. Brings DCE out of reset 5. Dumps various regsiters for debug In production env: 1. Manages interrupts to CPU from DCE 2. Uses bootstrap command interface to define Admin IPC 3. Locks down bootstrap command interface 4. Uses Admin IPC to define message IPC 5. Uses Admin IPC to define message IPC payload area 6. Uses Admin IPC to set IPC channels 6. Uses Admin IPC to define crashdump area (optional) 7. Provides IPC interfaces for any DCE Client running on CCPLEX including Display RM. 8. Uses Admin IPC to set logging level (optional) This patch puts a framework in place with the following features : 1. Firmware Loading 2. AST Configuration 3. DCE Reset with EVP Programming 4. Logging Infra 5. Debugfs Support 6. Interrupt Handling 7. Mailbox Programming 8. IPC Programming 9. DCE Client Interface 10. Ftrace Support for debug purposes Change-Id: Idd28cd9254706c7313f531fcadaa7024a5b344e7 Signed-off-by: Arun Swain <arswain@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-t23x/+/2289865 Reviewed-by: automaticguardword <automaticguardword@nvidia.com> Reviewed-by: Mahesh Kumar <mahkumar@nvidia.com> Reviewed-by: Santosh Galma <galmar@nvidia.com> Reviewed-by: Mitch Luban <mluban@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit Tested-by: Mahesh Kumar <mahkumar@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
82 lines
2.4 KiB
C
82 lines
2.4 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_WORKER_H
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#define DCE_WORKER_H
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#include <dce-cond.h>
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#include <dce-lock.h>
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#include <dce-thread.h>
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struct tegra_dce;
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/**
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* enum dce_worker_event_id_type - IDs to be used to convey various
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* events thoughout the life cycle of dce worker thread.
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*/
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enum dce_worker_event_id_type {
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EVENT_ID_DCE_BOOT_COMPLETE_IRQ_REQ_SET = 0,
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EVENT_ID_DCE_BOOT_COMPLETE_IRQ_RECEIVED = 1,
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EVENT_ID_DCE_IPC_SYNC_TRIGGERED = 2,
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EVENT_ID_DCE_IPC_MESSAGE_SENT = 3,
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EVENT_ID_DCE_IPC_SIGNAL_RECEIVED = 4,
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EVENT_ID_DCE_THREAD_ABORT_REQ_RECEIVED = 5,
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EVENT_ID_DCE_INTERFACE_ERROR_RECEIVED = 6,
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EVENT_ID_DCE_BOOT_COMPLETE = 7,
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};
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/**
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* dce_worker_state - Different states of dce worker thread.
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*/
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enum dce_worker_state {
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STATE_DCE_WORKER_IDLE = 0,
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STATE_DCE_WORKER_BOOT_WAIT = 1,
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STATE_DCE_WORKER_WFI = 2,
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STATE_DCE_WORKER_ABORTED = 3,
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STATE_DCE_WORKER_HANDLE_DCE_ERROR = 4,
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};
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/**
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* struct dce_worker_info - Contains information to control and manage
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* dce worker thread throughout its lifecycle.
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* @wrk_thread : Event driven dce thread to manage initilaization and
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* release workflow.
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* @state_changed : Boolean to convey state changes.
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* @c_state : Stores the current state of dce worker thread. State changes
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* are triggered by vrious events.
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* @lock : Used for exclusive state modifications from thread and
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* interrupt context.
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* @cond : dce_cond to manage various thread states.
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*/
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struct dce_worker_info {
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struct dce_thread wrk_thread;
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bool state_changed;
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enum dce_worker_state c_state;
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struct dce_mutex lock;
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struct dce_cond cond;
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};
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void dce_worker_thread_wait(struct tegra_dce *d,
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enum dce_worker_event_id_type event);
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void dce_worker_thread_wakeup(struct tegra_dce *d,
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enum dce_worker_event_id_type event);
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enum dce_worker_state dce_worker_get_state(struct tegra_dce *d);
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int dce_worker_thread_init(struct tegra_dce *d);
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void dce_worker_thread_deinit(struct tegra_dce *d);
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#endif
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