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Diffstat (limited to 'freedreno/freedreno_ringbuffer.h')
| -rw-r--r-- | freedreno/freedreno_ringbuffer.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/freedreno/freedreno_ringbuffer.h b/freedreno/freedreno_ringbuffer.h new file mode 100644 index 00000000..4fb668f7 --- /dev/null +++ b/freedreno/freedreno_ringbuffer.h @@ -0,0 +1,87 @@ +/* -*- 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.. more stuff will be added when we eventually + * have a kernel driver that can deal w/ reloc's.. + */ + +struct fd_rb_bo; +struct fd_ringmarker; + +struct fd_ringbuffer { + int size; + uint32_t *cur, *end, *start, *last_start; + struct fd_pipe *pipe; + struct fd_rb_bo *bo; + uint32_t last_timestamp; +}; + +/* ringbuffer flush flags: + * SAVE_GMEM - GMEM contents not preserved to system memory + * in cmds flushed so if there is a context switch after + * this flush and before the next one the kernel must + * save GMEM contents + * SUBMIT_IB_LIST - tbd.. + */ +#define DRM_FREEDRENO_CONTEXT_SAVE_GMEM 1 +#define DRM_FREEDRENO_CONTEXT_SUBMIT_IB_LIST 4 + + +struct fd_ringbuffer * fd_ringbuffer_new(struct fd_pipe *pipe, + uint32_t size); +void fd_ringbuffer_del(struct fd_ringbuffer *ring); +void fd_ringbuffer_reset(struct fd_ringbuffer *ring); +int fd_ringbuffer_flush(struct fd_ringbuffer *ring); +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; +} + +void fd_ringbuffer_emit_reloc(struct fd_ringbuffer *ring, + struct fd_bo *bo, uint32_t offset, uint32_t or); +void fd_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring, + struct fd_ringmarker *target); + +struct fd_ringmarker * fd_ringmarker_new(struct fd_ringbuffer *ring); +void fd_ringmarker_del(struct fd_ringmarker *marker); +void fd_ringmarker_mark(struct fd_ringmarker *marker); +uint32_t fd_ringmarker_dwords(struct fd_ringmarker *start, + struct fd_ringmarker *end); +int fd_ringmarker_flush(struct fd_ringmarker *marker); + +#endif /* FREEDRENO_RINGBUFFER_H_ */ |