diff options
Diffstat (limited to 'src/gallium/drivers/freedreno/drm/freedreno_ringbuffer.h')
| -rw-r--r-- | src/gallium/drivers/freedreno/drm/freedreno_ringbuffer.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/gallium/drivers/freedreno/drm/freedreno_ringbuffer.h b/src/gallium/drivers/freedreno/drm/freedreno_ringbuffer.h new file mode 100644 index 00000000000..4292c8f65d6 --- /dev/null +++ b/src/gallium/drivers/freedreno/drm/freedreno_ringbuffer.h @@ -0,0 +1,159 @@ +/* + * Copyright (C) 2012-2018 Rob Clark <[email protected]> + * + * 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 <[email protected]> + */ + +#ifndef FREEDRENO_RINGBUFFER_H_ +#define FREEDRENO_RINGBUFFER_H_ + +#include "util/u_debug.h" + +#include "freedreno_drmif.h" + +struct fd_submit; +struct fd_ringbuffer; + +enum fd_ringbuffer_flags { + + /* Primary ringbuffer for a submit, ie. an IB1 level rb + * which kernel must setup RB->IB1 CP_INDIRECT_BRANCH + * packets. + */ + FD_RINGBUFFER_PRIMARY = 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, + + /* Indicates that "growable" cmdstream can be used, + * consisting of multiple physical cmdstream buffers + */ + FD_RINGBUFFER_GROWABLE = 0x4, + + /* Internal use only: */ + _FD_RINGBUFFER_OBJECT = 0x8, +}; + +/* A submit object manages/tracks all the state buildup for a "submit" + * ioctl to the kernel. Additionally, with the exception of long-lived + * non-STREAMING stateobj rb's, rb's are allocated from the submit. + */ +struct fd_submit * fd_submit_new(struct fd_pipe *pipe); + +/* NOTE: all ringbuffer's create from the submit should be unref'd + * before destroying the submit. + */ +void fd_submit_del(struct fd_submit *submit); + +/* Allocate a new rb from the submit. */ +struct fd_ringbuffer * fd_submit_new_ringbuffer(struct fd_submit *submit, + uint32_t size, enum fd_ringbuffer_flags flags); + +/* 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_submit_flush(struct fd_submit *submit, + int in_fence_fd, int *out_fence_fd, + uint32_t *out_fence); + +struct fd_ringbuffer_funcs; + +/* 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 { + uint32_t *cur, *end, *start; + const struct fd_ringbuffer_funcs *funcs; + +// size or end coudl probably go away + int size; + int32_t refcnt; + enum fd_ringbuffer_flags flags; +}; + +/* Allocate a new long-lived state object, not associated with + * a submit: + */ +struct fd_ringbuffer * fd_ringbuffer_new_object(struct fd_pipe *pipe, + uint32_t size); + +struct fd_ringbuffer *fd_ringbuffer_ref(struct fd_ringbuffer *ring); +void fd_ringbuffer_del(struct fd_ringbuffer *ring); + +void fd_ringbuffer_grow(struct fd_ringbuffer *ring, uint32_t ndwords); + +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_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); + +static inline uint32_t +offset_bytes(void *end, void *start) +{ + return ((char *)end) - ((char *)start); +} + +static inline uint32_t +fd_ringbuffer_size(struct fd_ringbuffer *ring) +{ + /* only really needed for stateobj ringbuffers, and won't really + * do what you expect for growable rb's.. so lets just restrict + * this to stateobj's for now: + */ + debug_assert(!(ring->flags & FD_RINGBUFFER_GROWABLE)); + return offset_bytes(ring->cur, ring->start); +} + + +#endif /* FREEDRENO_RINGBUFFER_H_ */ |