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107 lines
3.9 KiB
107 lines
3.9 KiB
/* Copyright (c) 2008-2018, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef ____ADRENO_DISPATCHER_H
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#define ____ADRENO_DISPATCHER_H
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extern unsigned int adreno_drawobj_timeout;
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/*
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* Maximum size of the dispatcher ringbuffer - the actual inflight size will be
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* smaller then this but this size will allow for a larger range of inflight
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* sizes that can be chosen at runtime
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*/
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#define ADRENO_DISPATCH_DRAWQUEUE_SIZE 128
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#define DRAWQUEUE_NEXT(_i, _s) (((_i) + 1) % (_s))
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/**
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* struct adreno_dispatcher_drawqueue - List of commands for a RB level
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* @cmd_q: List of command obj's submitted to dispatcher
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* @inflight: Number of commands inflight in this q
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* @head: Head pointer to the q
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* @tail: Queues tail pointer
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* @active_context_count: Number of active contexts seen in this rb drawqueue
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* @expires: The jiffies value at which this drawqueue has run too long
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*/
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struct adreno_dispatcher_drawqueue {
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struct kgsl_drawobj_cmd *cmd_q[ADRENO_DISPATCH_DRAWQUEUE_SIZE];
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unsigned int inflight;
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unsigned int head;
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unsigned int tail;
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int active_context_count;
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unsigned long expires;
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};
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/**
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* struct adreno_dispatcher - container for the adreno GPU dispatcher
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* @mutex: Mutex to protect the structure
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* @state: Current state of the dispatcher (active or paused)
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* @timer: Timer to monitor the progress of the drawobjs
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* @inflight: Number of drawobj operations pending in the ringbuffer
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* @fault: Non-zero if a fault was detected.
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* @pending: Priority list of contexts waiting to submit drawobjs
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* @plist_lock: Spin lock to protect the pending queue
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* @work: work_struct to put the dispatcher in a work queue
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* @kobj: kobject for the dispatcher directory in the device sysfs node
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* @idle_gate: Gate to wait on for dispatcher to idle
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*/
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struct adreno_dispatcher {
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struct mutex mutex;
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unsigned long priv;
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struct timer_list timer;
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struct timer_list fault_timer;
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unsigned int inflight;
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atomic_t fault;
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struct plist_head pending;
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spinlock_t plist_lock;
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struct kthread_work work;
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struct kobject kobj;
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struct completion idle_gate;
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};
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enum adreno_dispatcher_flags {
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ADRENO_DISPATCHER_POWER = 0,
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ADRENO_DISPATCHER_ACTIVE = 1,
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};
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void adreno_dispatcher_start(struct kgsl_device *device);
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void adreno_dispatcher_halt(struct kgsl_device *device);
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void adreno_dispatcher_unhalt(struct kgsl_device *device);
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int adreno_dispatcher_init(struct adreno_device *adreno_dev);
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void adreno_dispatcher_close(struct adreno_device *adreno_dev);
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int adreno_dispatcher_idle(struct adreno_device *adreno_dev);
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void adreno_dispatcher_irq_fault(struct adreno_device *adreno_dev);
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void adreno_dispatcher_stop(struct adreno_device *adreno_dev);
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void adreno_dispatcher_stop_fault_timer(struct kgsl_device *device);
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int adreno_dispatcher_queue_cmds(struct kgsl_device_private *dev_priv,
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struct kgsl_context *context, struct kgsl_drawobj *drawobj[],
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uint32_t count, uint32_t *timestamp);
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void adreno_dispatcher_schedule(struct kgsl_device *device);
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void adreno_dispatcher_pause(struct adreno_device *adreno_dev);
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void adreno_dispatcher_queue_context(struct kgsl_device *device,
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struct adreno_context *drawctxt);
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void adreno_dispatcher_preempt_callback(struct adreno_device *adreno_dev,
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int bit);
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void adreno_preempt_process_dispatch_queue(struct adreno_device *adreno_dev,
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struct adreno_dispatcher_drawqueue *dispatch_q);
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static inline bool adreno_drawqueue_is_empty(
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struct adreno_dispatcher_drawqueue *drawqueue)
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{
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return (drawqueue != NULL && drawqueue->head == drawqueue->tail);
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}
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#endif /* __ADRENO_DISPATCHER_H */
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