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/* 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 */
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