drm/freedreno/freedreno_ringbuffer.h

143 lines
4.8 KiB
C

/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
/*
* Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
*
* 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.
*
* Authors:
* Rob Clark <robclark@freedesktop.org>
*/
#ifndef FREEDRENO_RINGBUFFER_H_
#define FREEDRENO_RINGBUFFER_H_
#include <freedreno_drmif.h>
/* the ringbuffer object is not opaque so that OUT_RING() type stuff
* can be inlined. Note that users should not make assumptions about
* the size of this struct.
*/
struct fd_ringbuffer_funcs;
enum fd_ringbuffer_flags {
/* Ringbuffer is a "state object", which is potentially reused
* many times, rather than being used in one-shot mode linked
* to a parent ringbuffer.
*/
FD_RINGBUFFER_OBJECT = 0x1,
/* Hint that the stateobj will be used for streaming state
* that is used once or a few times and then discarded.
*
* For sub-allocation, non streaming stateobj's should be
* sub-allocated from a page size buffer, so one long lived
* state obj doesn't prevent other pages from being freed.
* (Ie. it would be no worse than allocating a page sized
* bo for each small non-streaming stateobj).
*
* But streaming stateobj's could be sub-allocated from a
* larger buffer to reduce the alloc/del overhead.
*/
FD_RINGBUFFER_STREAMING = 0x2,
};
struct fd_ringbuffer {
int size;
uint32_t *cur, *end, *start, *last_start;
struct fd_pipe *pipe;
const struct fd_ringbuffer_funcs *funcs;
uint32_t last_timestamp;
struct fd_ringbuffer *parent;
/* for users of fd_ringbuffer to store their own private per-
* ringbuffer data
*/
void *user;
enum fd_ringbuffer_flags flags;
/* This is a bit gross, but we can't use atomic_t in exported
* headers. OTOH, we don't need the refcnt to be publicly
* visible. The only reason that this struct is exported is
* because fd_ringbuffer_emit needs to be something that can
* be inlined for performance reasons.
*/
union {
#ifdef HAS_ATOMIC_OPS
atomic_t refcnt;
#endif
uint64_t __pad;
};
};
struct fd_ringbuffer * fd_ringbuffer_new(struct fd_pipe *pipe,
uint32_t size);
will_be_deprecated
struct fd_ringbuffer * fd_ringbuffer_new_object(struct fd_pipe *pipe,
uint32_t size);
struct fd_ringbuffer * fd_ringbuffer_new_flags(struct fd_pipe *pipe,
uint32_t size, enum fd_ringbuffer_flags flags);
struct fd_ringbuffer *fd_ringbuffer_ref(struct fd_ringbuffer *ring);
void fd_ringbuffer_del(struct fd_ringbuffer *ring);
void fd_ringbuffer_set_parent(struct fd_ringbuffer *ring,
struct fd_ringbuffer *parent);
will_be_deprecated
void fd_ringbuffer_reset(struct fd_ringbuffer *ring);
int fd_ringbuffer_flush(struct fd_ringbuffer *ring);
/* in_fence_fd: -1 for no in-fence, else fence fd
* out_fence_fd: NULL for no output-fence requested, else ptr to return out-fence
*/
int fd_ringbuffer_flush2(struct fd_ringbuffer *ring, int in_fence_fd,
int *out_fence_fd);
void fd_ringbuffer_grow(struct fd_ringbuffer *ring, uint32_t ndwords);
uint32_t fd_ringbuffer_timestamp(struct fd_ringbuffer *ring);
static inline void fd_ringbuffer_emit(struct fd_ringbuffer *ring,
uint32_t data)
{
(*ring->cur++) = data;
}
struct fd_reloc {
struct fd_bo *bo;
#define FD_RELOC_READ 0x0001
#define FD_RELOC_WRITE 0x0002
uint32_t flags;
uint32_t offset;
uint32_t or;
int32_t shift;
uint32_t orhi; /* used for a5xx+ */
};
/* NOTE: relocs are 2 dwords on a5xx+ */
void fd_ringbuffer_reloc2(struct fd_ringbuffer *ring, const struct fd_reloc *reloc);
will_be_deprecated void fd_ringbuffer_reloc(struct fd_ringbuffer *ring, const struct fd_reloc *reloc);
uint32_t fd_ringbuffer_cmd_count(struct fd_ringbuffer *ring);
uint32_t fd_ringbuffer_emit_reloc_ring_full(struct fd_ringbuffer *ring,
struct fd_ringbuffer *target, uint32_t cmd_idx);
uint32_t fd_ringbuffer_size(struct fd_ringbuffer *ring);
#endif /* FREEDRENO_RINGBUFFER_H_ */