| /* Copyright (c) 2008-2014, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that 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. |
| * |
| */ |
| |
| |
| #ifndef ____ADRENO_DISPATCHER_H |
| #define ____ADRENO_DISPATCHER_H |
| |
| /* |
| * Maximum size of the dispatcher ringbuffer - the actual inflight size will be |
| * smaller then this but this size will allow for a larger range of inflight |
| * sizes that can be chosen at runtime |
| */ |
| |
| #define ADRENO_DISPATCH_CMDQUEUE_SIZE 128 |
| |
| #define CMDQUEUE_NEXT(_i, _s) (((_i) + 1) % (_s)) |
| |
| #define ACTIVE_CONTEXT_LIST_MAX 2 |
| |
| struct adreno_context_list { |
| unsigned int id; |
| unsigned long jiffies; |
| }; |
| |
| /** |
| * struct adreno_dispatcher_cmdqueue - List of commands for a RB level |
| * @cmd_q: List of command batches submitted to dispatcher |
| * @inflight: Number of commands inflight in this q |
| * @head: Head pointer to the q |
| * @tail: Queues tail pointer |
| * @active_contexts: List of most recently seen contexts |
| * @active_context_count: Number of active contexts in the active_contexts list |
| */ |
| struct adreno_dispatcher_cmdqueue { |
| struct kgsl_cmdbatch *cmd_q[ADRENO_DISPATCH_CMDQUEUE_SIZE]; |
| unsigned int inflight; |
| unsigned int head; |
| unsigned int tail; |
| struct adreno_context_list active_contexts[ACTIVE_CONTEXT_LIST_MAX]; |
| int active_context_count; |
| }; |
| |
| /** |
| * struct adreno_dispatcher - container for the adreno GPU dispatcher |
| * @mutex: Mutex to protect the structure |
| * @state: Current state of the dispatcher (active or paused) |
| * @timer: Timer to monitor the progress of the command batches |
| * @inflight: Number of command batch operations pending in the ringbuffer |
| * @fault: Non-zero if a fault was detected. |
| * @pending: Priority list of contexts waiting to submit command batches |
| * @plist_lock: Spin lock to protect the pending queue |
| * @work: work_struct to put the dispatcher in a work queue |
| * @kobj: kobject for the dispatcher directory in the device sysfs node |
| * @idle_gate: Gate to wait on for dispatcher to idle |
| */ |
| struct adreno_dispatcher { |
| struct mutex mutex; |
| unsigned long priv; |
| struct timer_list timer; |
| struct timer_list fault_timer; |
| unsigned int inflight; |
| atomic_t fault; |
| struct plist_head pending; |
| spinlock_t plist_lock; |
| struct kthread_work work; |
| struct kobject kobj; |
| struct completion idle_gate; |
| }; |
| |
| enum adreno_dispatcher_flags { |
| ADRENO_DISPATCHER_POWER = 0, |
| ADRENO_DISPATCHER_ACTIVE = 1, |
| }; |
| |
| void adreno_dispatcher_start(struct kgsl_device *device); |
| int adreno_dispatcher_init(struct adreno_device *adreno_dev); |
| void adreno_dispatcher_close(struct adreno_device *adreno_dev); |
| int adreno_dispatcher_idle(struct adreno_device *adreno_dev); |
| void adreno_dispatcher_irq_fault(struct kgsl_device *device); |
| void adreno_dispatcher_stop(struct adreno_device *adreno_dev); |
| |
| int adreno_dispatcher_queue_cmd(struct adreno_device *adreno_dev, |
| struct adreno_context *drawctxt, struct kgsl_cmdbatch *cmdbatch, |
| uint32_t *timestamp); |
| |
| void adreno_dispatcher_schedule(struct kgsl_device *device); |
| void adreno_dispatcher_pause(struct adreno_device *adreno_dev); |
| void adreno_dispatcher_queue_context(struct kgsl_device *device, |
| struct adreno_context *drawctxt); |
| |
| #endif /* __ADRENO_DISPATCHER_H */ |