/*
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* Copyright © 2014 Broadcom
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef VC4_BUFMGR_H
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#define VC4_BUFMGR_H
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#include <stdint.h>
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#include "util/u_hash_table.h"
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#include "util/u_inlines.h"
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#include "vc4_qir.h"
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struct vc4_context;
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struct vc4_bo {
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struct pipe_reference reference;
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struct vc4_screen *screen;
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void *map;
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const char *name;
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uint32_t handle;
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uint32_t size;
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/* This will be read/written by multiple threads without a lock -- you
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* should take a snapshot and use it to see if you happen to be in the
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* CL's handles at this position, to make most lookups O(1). It's
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* volatile to make sure that the compiler doesn't emit multiple loads
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* from the address, which would make the lookup racy.
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*/
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volatile uint32_t last_hindex;
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/** Entry in the linked list of buffers freed, by age. */
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struct list_head time_list;
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/** Entry in the per-page-count linked list of buffers freed (by age). */
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struct list_head size_list;
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/** Approximate second when the bo was freed. */
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time_t free_time;
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/**
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* Whether only our process has a reference to the BO (meaning that
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* it's safe to reuse it in the BO cache).
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*/
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bool private;
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};
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struct vc4_bo *vc4_bo_alloc(struct vc4_screen *screen, uint32_t size,
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const char *name);
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struct vc4_bo *vc4_bo_alloc_shader(struct vc4_screen *screen, const void *data,
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uint32_t size);
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void vc4_bo_last_unreference(struct vc4_bo *bo);
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void vc4_bo_last_unreference_locked_timed(struct vc4_bo *bo, time_t time);
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struct vc4_bo *vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
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uint32_t winsys_stride);
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struct vc4_bo *vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd,
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uint32_t winsys_stride);
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bool vc4_bo_flink(struct vc4_bo *bo, uint32_t *name);
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int vc4_bo_get_dmabuf(struct vc4_bo *bo);
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static inline void
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vc4_bo_set_reference(struct vc4_bo **old_bo, struct vc4_bo *new_bo)
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{
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if (pipe_reference(&(*old_bo)->reference, &new_bo->reference))
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vc4_bo_last_unreference(*old_bo);
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*old_bo = new_bo;
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}
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static inline struct vc4_bo *
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vc4_bo_reference(struct vc4_bo *bo)
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{
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pipe_reference(NULL, &bo->reference);
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return bo;
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}
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static inline void
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vc4_bo_unreference(struct vc4_bo **bo)
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{
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struct vc4_screen *screen;
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if (!*bo)
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return;
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if ((*bo)->private) {
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/* Avoid the mutex for private BOs */
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if (pipe_reference(&(*bo)->reference, NULL))
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vc4_bo_last_unreference(*bo);
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} else {
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screen = (*bo)->screen;
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mtx_lock(&screen->bo_handles_mutex);
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if (pipe_reference(&(*bo)->reference, NULL)) {
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util_hash_table_remove(screen->bo_handles,
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(void *)(uintptr_t)(*bo)->handle);
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vc4_bo_last_unreference(*bo);
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}
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mtx_unlock(&screen->bo_handles_mutex);
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}
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*bo = NULL;
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}
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static inline void
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vc4_bo_unreference_locked_timed(struct vc4_bo **bo, time_t time)
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{
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if (!*bo)
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return;
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if (pipe_reference(&(*bo)->reference, NULL))
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vc4_bo_last_unreference_locked_timed(*bo, time);
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*bo = NULL;
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}
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void *
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vc4_bo_map(struct vc4_bo *bo);
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void *
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vc4_bo_map_unsynchronized(struct vc4_bo *bo);
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bool
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vc4_bo_wait(struct vc4_bo *bo, uint64_t timeout_ns, const char *reason);
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bool
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vc4_wait_seqno(struct vc4_screen *screen, uint64_t seqno, uint64_t timeout_ns,
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const char *reason);
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void
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vc4_bo_label(struct vc4_screen *screen, struct vc4_bo *bo, const char *fmt, ...);
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void
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vc4_bufmgr_destroy(struct pipe_screen *pscreen);
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#endif /* VC4_BUFMGR_H */
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