/*
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* Copyright (C) 2012-2017 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
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*
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* A copy of the licence is included with the program, and can also be obtained from Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/**
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* @file mali_dma_fence.h
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*
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* Mali interface for Linux dma buf fence objects.
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*/
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#ifndef _MALI_DMA_FENCE_H_
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#define _MALI_DMA_FENCE_H_
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
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#include <linux/dma-fence.h>
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#else
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#include <linux/fence.h>
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#endif
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#include <linux/reservation.h>
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#endif
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struct mali_dma_fence_context;
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/* The mali dma fence context callback function */
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typedef void (*mali_dma_fence_context_callback_func_t)(void *pp_job_ptr);
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struct mali_dma_fence_waiter {
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
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struct dma_fence *fence;
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struct dma_fence_cb base;
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#else
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struct fence_cb base;
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struct fence *fence;
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#endif
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struct mali_dma_fence_context *parent;
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};
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struct mali_dma_fence_context {
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struct work_struct work_handle;
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struct mali_dma_fence_waiter **mali_dma_fence_waiters;
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u32 num_dma_fence_waiter;
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atomic_t count;
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void *pp_job_ptr; /* the mali pp job pointer */;
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mali_dma_fence_context_callback_func_t cb_func;
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};
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/* Create a dma fence
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* @param context The execution context this fence is run on
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* @param seqno A linearly increasing sequence number for this context
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* @return the new dma fence if success, or NULL on failure.
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*/
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
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struct dma_fence *mali_dma_fence_new(u32 context, u32 seqno);
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#else
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struct fence *mali_dma_fence_new(u32 context, u32 seqno);
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#endif
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/* Signal and put dma fence
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* @param fence The dma fence to signal and put
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*/
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 10, 0)
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void mali_dma_fence_signal_and_put(struct dma_fence **fence);
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#else
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void mali_dma_fence_signal_and_put(struct fence **fence);
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#endif
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/**
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* Initialize a mali dma fence context for pp job.
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* @param dma_fence_context The mali dma fence context to initialize.
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* @param cb_func The dma fence context callback function to call when all dma fence release.
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* @param pp_job_ptr The pp_job to call function with.
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*/
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void mali_dma_fence_context_init(struct mali_dma_fence_context *dma_fence_context,
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mali_dma_fence_context_callback_func_t cb_func,
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void *pp_job_ptr);
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/**
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* Add new mali dma fence waiter into mali dma fence context
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* @param dma_fence_context The mali dma fence context
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* @param dma_reservation_object the reservation object to create new mali dma fence waiters
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* @return _MALI_OSK_ERR_OK if success, or not.
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*/
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_mali_osk_errcode_t mali_dma_fence_context_add_waiters(struct mali_dma_fence_context *dma_fence_context,
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struct reservation_object *dma_reservation_object);
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/**
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* Release the dma fence context
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* @param dma_fence_text The mali dma fence context.
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*/
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void mali_dma_fence_context_term(struct mali_dma_fence_context *dma_fence_context);
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/**
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* Decrease the dma fence context atomic count
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* @param dma_fence_text The mali dma fence context.
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*/
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void mali_dma_fence_context_dec_count(struct mali_dma_fence_context *dma_fence_context);
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/**
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* Get all reservation object
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* @param dma_reservation_object The reservation object to add into the reservation object list
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* @param dma_reservation_object_list The reservation object list to store all reservation object
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* @param num_dma_reservation_object The number of all reservation object
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*/
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void mali_dma_fence_add_reservation_object_list(struct reservation_object *dma_reservation_object,
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struct reservation_object **dma_reservation_object_list,
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u32 *num_dma_reservation_object);
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/**
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* Wait/wound mutex lock to lock all reservation object.
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*/
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int mali_dma_fence_lock_reservation_object_list(struct reservation_object **dma_reservation_object_list,
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u32 num_dma_reservation_object, struct ww_acquire_ctx *ww_actx);
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/**
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* Wait/wound mutex lock to unlock all reservation object.
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*/
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void mali_dma_fence_unlock_reservation_object_list(struct reservation_object **dma_reservation_object_list,
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u32 num_dma_reservation_object, struct ww_acquire_ctx *ww_actx);
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#endif
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