113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2008-2021, The Linux Foundation. All rights reserved.
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*/
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#ifndef ____ADRENO_DISPATCHER_H
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#define ____ADRENO_DISPATCHER_H
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#include <linux/kobject.h>
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#include <linux/kthread.h>
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#include <linux/llist.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_dispatch_job - An instance of work for the dispatcher
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* @node: llist node for the list of jobs
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* @drawctxt: A pointer to an adreno draw context
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*
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* This struct defines work for the dispatcher. When a drawctxt is ready to send
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* commands it will attach itself to the appropriate list for it's priority.
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* The dispatcher will process all jobs on each priority every time it goes
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* through a dispatch cycle
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*/
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struct adreno_dispatch_job {
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struct llist_node node;
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struct adreno_context *drawctxt;
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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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* @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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/** @jobs - Array of dispatch job lists for each priority level */
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struct llist_head jobs[16];
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/** @requeue - Array of lists for dispatch jobs that got requeued */
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struct llist_head requeue[16];
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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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struct kthread_worker *worker;
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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,
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ADRENO_DISPATCHER_INIT,
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};
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struct adreno_device;
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struct kgsl_device;
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void adreno_dispatcher_start(struct kgsl_device *device);
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int adreno_dispatcher_init(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_stop(struct adreno_device *adreno_dev);
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void adreno_dispatcher_start_fault_timer(struct adreno_device *adreno_dev);
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void adreno_dispatcher_stop_fault_timer(struct kgsl_device *device);
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void adreno_dispatcher_schedule(struct kgsl_device *device);
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/**
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* adreno_dispatcher_fault - Set dispatcher fault to request recovery
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* @adreno_dev: A handle to adreno device
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* @fault: The type of fault
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*/
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void adreno_dispatcher_fault(struct adreno_device *adreno_dev, u32 fault);
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#endif /* __ADRENO_DISPATCHER_H */
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