2 * Copyright (c) 2010-2012 Broadcom. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions, and the following disclaimer, 9 * without modification. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The names of the above-listed copyright holders may not be used 14 * to endorse or promote products derived from this software without 15 * specific prior written permission. 16 * 17 * ALTERNATIVELY, this software may be distributed under the terms of the 18 * GNU General Public License ("GPL") version 2, as published by the Free 19 * Software Foundation. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 22 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 23 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 25 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 26 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 28 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 29 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 30 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 31 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34#ifndef VCHIQ_ARM_H 35#define VCHIQ_ARM_H 36 37#include "vchiq_core.h" 38 39 40enum vc_suspend_status { 41 VC_SUSPEND_FORCE_CANCELED = -3, /* Force suspend canceled, too busy */ 42 VC_SUSPEND_REJECTED = -2, /* Videocore rejected suspend request */ 43 VC_SUSPEND_FAILED = -1, /* Videocore suspend failed */ 44 VC_SUSPEND_IDLE = 0, /* VC active, no suspend actions */ 45 VC_SUSPEND_REQUESTED, /* User has requested suspend */ 46 VC_SUSPEND_IN_PROGRESS, /* Slot handler has recvd suspend request */ 47 VC_SUSPEND_SUSPENDED /* Videocore suspend succeeded */ 48}; 49 50enum vc_resume_status { 51 VC_RESUME_FAILED = -1, /* Videocore resume failed */ 52 VC_RESUME_IDLE = 0, /* VC suspended, no resume actions */ 53 VC_RESUME_REQUESTED, /* User has requested resume */ 54 VC_RESUME_IN_PROGRESS, /* Slot handler has received resume request */ 55 VC_RESUME_RESUMED /* Videocore resumed successfully (active) */ 56}; 57 58 59enum USE_TYPE_E { 60 USE_TYPE_SERVICE, 61 USE_TYPE_SERVICE_NO_RESUME, 62 USE_TYPE_VCHIQ 63}; 64 65 66 67typedef struct vchiq_arm_state_struct { 68 /* Keepalive-related data */ 69 VCHIQ_THREAD_T ka_thread; 70 struct completion ka_evt; 71 atomic_t ka_use_count; 72 atomic_t ka_use_ack_count; 73 atomic_t ka_release_count; 74 75 struct completion vc_suspend_complete; 76 struct completion vc_resume_complete; 77 78 rwlock_t susp_res_lock; 79 enum vc_suspend_status vc_suspend_state; 80 enum vc_resume_status vc_resume_state; 81 82 unsigned int wake_address; 83 84 struct timer_list suspend_timer; 85 int suspend_timer_timeout; 86 int suspend_timer_running; 87 88 /* Global use count for videocore. 89 ** This is equal to the sum of the use counts for all services. When 90 ** this hits zero the videocore suspend procedure will be initiated. 91 */ 92 int videocore_use_count; 93 94 /* Use count to track requests from videocore peer. 95 ** This use count is not associated with a service, so needs to be 96 ** tracked separately with the state. 97 */ 98 int peer_use_count; 99 100 /* Flag to indicate whether resume is blocked. This happens when the 101 ** ARM is suspending 102 */ 103 struct completion resume_blocker; 104 int resume_blocked; 105 struct completion blocked_blocker; 106 int blocked_count; 107 108 int autosuspend_override; 109 110 /* Flag to indicate that the first vchiq connect has made it through. 111 ** This means that both sides should be fully ready, and we should 112 ** be able to suspend after this point. 113 */ 114 int first_connect; 115 116 unsigned long long suspend_start_time; 117 unsigned long long sleep_start_time; 118 unsigned long long resume_start_time; 119 unsigned long long last_wake_time; 120 121} VCHIQ_ARM_STATE_T; 122 123extern int vchiq_arm_log_level; 124extern int vchiq_susp_log_level; 125 126extern int __init 127vchiq_platform_init(VCHIQ_STATE_T *state); 128 129extern void __exit 130vchiq_platform_exit(VCHIQ_STATE_T *state); 131 132extern VCHIQ_STATE_T * 133vchiq_get_state(void); 134 135extern VCHIQ_STATUS_T 136vchiq_arm_vcsuspend(VCHIQ_STATE_T *state); 137 138extern VCHIQ_STATUS_T 139vchiq_arm_force_suspend(VCHIQ_STATE_T *state); 140 141extern int 142vchiq_arm_allow_resume(VCHIQ_STATE_T *state); 143 144extern VCHIQ_STATUS_T 145vchiq_arm_vcresume(VCHIQ_STATE_T *state); 146 147extern VCHIQ_STATUS_T 148vchiq_arm_init_state(VCHIQ_STATE_T *state, VCHIQ_ARM_STATE_T *arm_state); 149 150extern int 151vchiq_check_resume(VCHIQ_STATE_T *state); 152 153extern void 154vchiq_check_suspend(VCHIQ_STATE_T *state); 155
| 3 * Copyright (c) 2010-2012 Broadcom. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions, and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The names of the above-listed copyright holders may not be used 15 * to endorse or promote products derived from this software without 16 * specific prior written permission. 17 * 18 * ALTERNATIVELY, this software may be distributed under the terms of the 19 * GNU General Public License ("GPL") version 2, as published by the Free 20 * Software Foundation. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 23 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 26 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 29 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 30 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 31 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35#ifndef VCHIQ_ARM_H 36#define VCHIQ_ARM_H 37 38#include "vchiq_core.h" 39 40 41enum vc_suspend_status { 42 VC_SUSPEND_FORCE_CANCELED = -3, /* Force suspend canceled, too busy */ 43 VC_SUSPEND_REJECTED = -2, /* Videocore rejected suspend request */ 44 VC_SUSPEND_FAILED = -1, /* Videocore suspend failed */ 45 VC_SUSPEND_IDLE = 0, /* VC active, no suspend actions */ 46 VC_SUSPEND_REQUESTED, /* User has requested suspend */ 47 VC_SUSPEND_IN_PROGRESS, /* Slot handler has recvd suspend request */ 48 VC_SUSPEND_SUSPENDED /* Videocore suspend succeeded */ 49}; 50 51enum vc_resume_status { 52 VC_RESUME_FAILED = -1, /* Videocore resume failed */ 53 VC_RESUME_IDLE = 0, /* VC suspended, no resume actions */ 54 VC_RESUME_REQUESTED, /* User has requested resume */ 55 VC_RESUME_IN_PROGRESS, /* Slot handler has received resume request */ 56 VC_RESUME_RESUMED /* Videocore resumed successfully (active) */ 57}; 58 59 60enum USE_TYPE_E { 61 USE_TYPE_SERVICE, 62 USE_TYPE_SERVICE_NO_RESUME, 63 USE_TYPE_VCHIQ 64}; 65 66 67 68typedef struct vchiq_arm_state_struct { 69 /* Keepalive-related data */ 70 VCHIQ_THREAD_T ka_thread; 71 struct completion ka_evt; 72 atomic_t ka_use_count; 73 atomic_t ka_use_ack_count; 74 atomic_t ka_release_count; 75 76 struct completion vc_suspend_complete; 77 struct completion vc_resume_complete; 78 79 rwlock_t susp_res_lock; 80 enum vc_suspend_status vc_suspend_state; 81 enum vc_resume_status vc_resume_state; 82 83 unsigned int wake_address; 84 85 struct timer_list suspend_timer; 86 int suspend_timer_timeout; 87 int suspend_timer_running; 88 89 /* Global use count for videocore. 90 ** This is equal to the sum of the use counts for all services. When 91 ** this hits zero the videocore suspend procedure will be initiated. 92 */ 93 int videocore_use_count; 94 95 /* Use count to track requests from videocore peer. 96 ** This use count is not associated with a service, so needs to be 97 ** tracked separately with the state. 98 */ 99 int peer_use_count; 100 101 /* Flag to indicate whether resume is blocked. This happens when the 102 ** ARM is suspending 103 */ 104 struct completion resume_blocker; 105 int resume_blocked; 106 struct completion blocked_blocker; 107 int blocked_count; 108 109 int autosuspend_override; 110 111 /* Flag to indicate that the first vchiq connect has made it through. 112 ** This means that both sides should be fully ready, and we should 113 ** be able to suspend after this point. 114 */ 115 int first_connect; 116 117 unsigned long long suspend_start_time; 118 unsigned long long sleep_start_time; 119 unsigned long long resume_start_time; 120 unsigned long long last_wake_time; 121 122} VCHIQ_ARM_STATE_T; 123 124extern int vchiq_arm_log_level; 125extern int vchiq_susp_log_level; 126 127extern int __init 128vchiq_platform_init(VCHIQ_STATE_T *state); 129 130extern void __exit 131vchiq_platform_exit(VCHIQ_STATE_T *state); 132 133extern VCHIQ_STATE_T * 134vchiq_get_state(void); 135 136extern VCHIQ_STATUS_T 137vchiq_arm_vcsuspend(VCHIQ_STATE_T *state); 138 139extern VCHIQ_STATUS_T 140vchiq_arm_force_suspend(VCHIQ_STATE_T *state); 141 142extern int 143vchiq_arm_allow_resume(VCHIQ_STATE_T *state); 144 145extern VCHIQ_STATUS_T 146vchiq_arm_vcresume(VCHIQ_STATE_T *state); 147 148extern VCHIQ_STATUS_T 149vchiq_arm_init_state(VCHIQ_STATE_T *state, VCHIQ_ARM_STATE_T *arm_state); 150 151extern int 152vchiq_check_resume(VCHIQ_STATE_T *state); 153 154extern void 155vchiq_check_suspend(VCHIQ_STATE_T *state); 156
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