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