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