a0b8746173
- Add LIB_VERSION ioctl - Add CLOSE_DELIVERED ioctl - Bump code version Upstream version: 3782f2ad42c08f4d32f64138f8be7341afc380f5
216 lines
6.3 KiB
C
216 lines
6.3 KiB
C
/**
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* Copyright (c) 2014 Raspberry Pi (Trading) Ltd. All rights reserved.
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* Copyright (c) 2010-2012 Broadcom. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the above-listed copyright holders may not be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* ALTERNATIVELY, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2, as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef VCHIQ_ARM_H
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#define VCHIQ_ARM_H
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#include "vchiq_core.h"
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enum vc_suspend_status {
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VC_SUSPEND_FORCE_CANCELED = -3, /* Force suspend canceled, too busy */
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VC_SUSPEND_REJECTED = -2, /* Videocore rejected suspend request */
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VC_SUSPEND_FAILED = -1, /* Videocore suspend failed */
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VC_SUSPEND_IDLE = 0, /* VC active, no suspend actions */
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VC_SUSPEND_REQUESTED, /* User has requested suspend */
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VC_SUSPEND_IN_PROGRESS, /* Slot handler has recvd suspend request */
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VC_SUSPEND_SUSPENDED /* Videocore suspend succeeded */
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};
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enum vc_resume_status {
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VC_RESUME_FAILED = -1, /* Videocore resume failed */
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VC_RESUME_IDLE = 0, /* VC suspended, no resume actions */
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VC_RESUME_REQUESTED, /* User has requested resume */
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VC_RESUME_IN_PROGRESS, /* Slot handler has received resume request */
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VC_RESUME_RESUMED /* Videocore resumed successfully (active) */
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};
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enum USE_TYPE_E {
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USE_TYPE_SERVICE,
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USE_TYPE_SERVICE_NO_RESUME,
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USE_TYPE_VCHIQ
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};
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typedef struct vchiq_arm_state_struct {
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/* Keepalive-related data */
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VCHIQ_THREAD_T ka_thread;
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struct completion ka_evt;
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atomic_t ka_use_count;
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atomic_t ka_use_ack_count;
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atomic_t ka_release_count;
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struct completion vc_suspend_complete;
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struct completion vc_resume_complete;
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rwlock_t susp_res_lock;
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enum vc_suspend_status vc_suspend_state;
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enum vc_resume_status vc_resume_state;
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unsigned int wake_address;
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struct timer_list suspend_timer;
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int suspend_timer_timeout;
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int suspend_timer_running;
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/* Global use count for videocore.
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** This is equal to the sum of the use counts for all services. When
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** this hits zero the videocore suspend procedure will be initiated.
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*/
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int videocore_use_count;
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/* Use count to track requests from videocore peer.
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** This use count is not associated with a service, so needs to be
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** tracked separately with the state.
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*/
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int peer_use_count;
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/* Flag to indicate whether resume is blocked. This happens when the
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** ARM is suspending
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*/
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struct completion resume_blocker;
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int resume_blocked;
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struct completion blocked_blocker;
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int blocked_count;
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int autosuspend_override;
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/* Flag to indicate that the first vchiq connect has made it through.
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** This means that both sides should be fully ready, and we should
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** be able to suspend after this point.
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*/
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int first_connect;
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unsigned long long suspend_start_time;
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unsigned long long sleep_start_time;
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unsigned long long resume_start_time;
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unsigned long long last_wake_time;
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} VCHIQ_ARM_STATE_T;
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extern int vchiq_arm_log_level;
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extern int vchiq_susp_log_level;
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extern int __init
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vchiq_platform_init(VCHIQ_STATE_T *state);
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extern void __exit
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vchiq_platform_exit(VCHIQ_STATE_T *state);
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extern VCHIQ_STATE_T *
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vchiq_get_state(void);
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extern VCHIQ_STATUS_T
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vchiq_arm_vcsuspend(VCHIQ_STATE_T *state);
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extern VCHIQ_STATUS_T
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vchiq_arm_force_suspend(VCHIQ_STATE_T *state);
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extern int
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vchiq_arm_allow_resume(VCHIQ_STATE_T *state);
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extern VCHIQ_STATUS_T
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vchiq_arm_vcresume(VCHIQ_STATE_T *state);
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extern VCHIQ_STATUS_T
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vchiq_arm_init_state(VCHIQ_STATE_T *state, VCHIQ_ARM_STATE_T *arm_state);
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extern int
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vchiq_check_resume(VCHIQ_STATE_T *state);
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extern void
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vchiq_check_suspend(VCHIQ_STATE_T *state);
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VCHIQ_STATUS_T
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vchiq_use_service(VCHIQ_SERVICE_HANDLE_T handle);
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extern VCHIQ_STATUS_T
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vchiq_platform_suspend(VCHIQ_STATE_T *state);
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extern int
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vchiq_platform_videocore_wanted(VCHIQ_STATE_T *state);
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extern int
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vchiq_platform_use_suspend_timer(void);
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extern void
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vchiq_dump_platform_use_state(VCHIQ_STATE_T *state);
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extern void
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vchiq_dump_service_use_state(VCHIQ_STATE_T *state);
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extern VCHIQ_ARM_STATE_T*
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vchiq_platform_get_arm_state(VCHIQ_STATE_T *state);
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extern int
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vchiq_videocore_wanted(VCHIQ_STATE_T *state);
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extern VCHIQ_STATUS_T
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vchiq_use_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
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enum USE_TYPE_E use_type);
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extern VCHIQ_STATUS_T
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vchiq_release_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service);
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#ifdef notyet
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extern VCHIQ_DEBUGFS_NODE_T *
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vchiq_instance_get_debugfs_node(VCHIQ_INSTANCE_T instance);
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#endif
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extern int
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vchiq_instance_get_use_count(VCHIQ_INSTANCE_T instance);
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extern int
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vchiq_instance_get_pid(VCHIQ_INSTANCE_T instance);
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extern int
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vchiq_instance_get_trace(VCHIQ_INSTANCE_T instance);
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extern void
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vchiq_instance_set_trace(VCHIQ_INSTANCE_T instance, int trace);
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extern void
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set_suspend_state(VCHIQ_ARM_STATE_T *arm_state,
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enum vc_suspend_status new_state);
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extern void
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set_resume_state(VCHIQ_ARM_STATE_T *arm_state,
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enum vc_resume_status new_state);
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extern void
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start_suspend_timer(VCHIQ_ARM_STATE_T *arm_state);
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#endif /* VCHIQ_ARM_H */
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