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/*
* © Copyright 2019 Alyssa Rosenzweig
* © Copyright 2019 Collabora, Ltd.
*
* 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 __PAN_BO_H__
#define __PAN_BO_H__
#include <panfrost-misc.h>
#include "pipe/p_state.h"
#include "util/list.h"
struct panfrost_screen;
/* Flags for allocated memory */
/* This memory region is executable */
#define PAN_BO_EXECUTE (1 << 0)
/* This memory region should be lazily allocated and grow-on-page-fault. Must
* be used in conjunction with INVISIBLE */
#define PAN_BO_GROWABLE (1 << 1)
/* This memory region should not be mapped to the CPU */
#define PAN_BO_INVISIBLE (1 << 2)
/* This memory region will be used for varyings and needs to have the cache
* bits twiddled accordingly */
#define PAN_BO_COHERENT_LOCAL (1 << 3)
/* This region may not be used immediately and will not mmap on allocate
* (semantically distinct from INVISIBLE, which cannot never be mmaped) */
#define PAN_BO_DELAY_MMAP (1 << 4)
/* Some BOs shouldn't be returned back to the reuse BO cache, use this flag to
* let the BO logic know about this contraint. */
#define PAN_BO_DONT_REUSE (1 << 5)
/* BO has been imported */
#define PAN_BO_IMPORTED (1 << 6)
/* BO has been exported */
#define PAN_BO_EXPORTED (1 << 7)
/* GPU access flags */
/* BO is either shared (can be accessed by more than one GPU batch) or private
* (reserved by a specific GPU job). */
#define PAN_BO_ACCESS_PRIVATE (0 << 0)
#define PAN_BO_ACCESS_SHARED (1 << 0)
/* BO is being read/written by the GPU */
#define PAN_BO_ACCESS_READ (1 << 1)
#define PAN_BO_ACCESS_WRITE (1 << 2)
#define PAN_BO_ACCESS_RW (PAN_BO_ACCESS_READ | PAN_BO_ACCESS_WRITE)
/* BO is accessed by the vertex/tiler job. */
#define PAN_BO_ACCESS_VERTEX_TILER (1 << 3)
/* BO is accessed by the fragment job. */
#define PAN_BO_ACCESS_FRAGMENT (1 << 4)
struct panfrost_bo {
/* Must be first for casting */
struct list_head bucket_link;
/* Used to link the BO to the BO cache LRU list. */
struct list_head lru_link;
/* Store the time this BO was use last, so the BO cache logic can evict
* stale BOs.
*/
time_t last_used;
struct pipe_reference reference;
struct panfrost_screen *screen;
/* Mapping for the entire object (all levels) */
uint8_t *cpu;
/* GPU address for the object */
mali_ptr gpu;
/* Size of all entire trees */
size_t size;
int gem_handle;
uint32_t flags;
/* Combination of PAN_BO_ACCESS_{READ,WRITE} flags encoding pending
* GPU accesses to this BO. Useful to avoid calling the WAIT_BO ioctl
* when the BO is idle.
*/
uint32_t gpu_access;
};
/* If a BO is accessed for a particular shader stage, will it be in the primary
* batch (vertex/tiler) or the secondary batch (fragment)? Anything but
* fragment will be primary, e.g. compute jobs will be considered
* "vertex/tiler" by analogy */
static inline uint32_t
panfrost_bo_access_for_stage(enum pipe_shader_type stage)
{
assert(stage == PIPE_SHADER_FRAGMENT ||
stage == PIPE_SHADER_VERTEX ||
stage == PIPE_SHADER_COMPUTE);
return stage == PIPE_SHADER_FRAGMENT ?
PAN_BO_ACCESS_FRAGMENT :
PAN_BO_ACCESS_VERTEX_TILER;
}
bool
panfrost_bo_wait(struct panfrost_bo *bo, int64_t timeout_ns,
uint32_t access_type);
void
panfrost_bo_reference(struct panfrost_bo *bo);
void
panfrost_bo_unreference(struct panfrost_bo *bo);
struct panfrost_bo *
panfrost_bo_create(struct panfrost_screen *screen, size_t size,
uint32_t flags);
void
panfrost_bo_mmap(struct panfrost_bo *bo);
struct panfrost_bo *
panfrost_bo_import(struct panfrost_screen *screen, int fd);
int
panfrost_bo_export(struct panfrost_bo *bo);
void
panfrost_bo_cache_evict_all(struct panfrost_screen *screen);
#endif /* __PAN_BO_H__ */
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