diff options
Diffstat (limited to 'freedreno/freedreno_ringbuffer.c')
| -rw-r--r-- | freedreno/freedreno_ringbuffer.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/freedreno/freedreno_ringbuffer.c b/freedreno/freedreno_ringbuffer.c new file mode 100644 index 0000000..8f0093a --- /dev/null +++ b/freedreno/freedreno_ringbuffer.c @@ -0,0 +1,182 @@ +/* -*- 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> + */ + +#include <assert.h> + +#include "freedreno_drmif.h" +#include "freedreno_priv.h" +#include "freedreno_ringbuffer.h" + +drm_public struct fd_ringbuffer * +fd_ringbuffer_new_flags(struct fd_pipe *pipe, uint32_t size, + enum fd_ringbuffer_flags flags) +{ + struct fd_ringbuffer *ring; + + /* we can't really support "growable" rb's in general for + * stateobj's since we need a single gpu addr (ie. can't + * do the trick of a chain of IB packets): + */ + if (flags & FD_RINGBUFFER_OBJECT) + assert(size); + + ring = pipe->funcs->ringbuffer_new(pipe, size, flags); + if (!ring) + return NULL; + + ring->flags = flags; + ring->pipe = pipe; + ring->start = ring->funcs->hostptr(ring); + ring->end = &(ring->start[ring->size/4]); + + ring->cur = ring->last_start = ring->start; + + return ring; +} + +drm_public struct fd_ringbuffer * +fd_ringbuffer_new(struct fd_pipe *pipe, uint32_t size) +{ + return fd_ringbuffer_new_flags(pipe, size, 0); +} + +drm_public struct fd_ringbuffer * +fd_ringbuffer_new_object(struct fd_pipe *pipe, uint32_t size) +{ + return fd_ringbuffer_new_flags(pipe, size, FD_RINGBUFFER_OBJECT); +} + +drm_public void fd_ringbuffer_del(struct fd_ringbuffer *ring) +{ + if (!atomic_dec_and_test(&ring->refcnt)) + return; + + fd_ringbuffer_reset(ring); + ring->funcs->destroy(ring); +} + +drm_public struct fd_ringbuffer * +fd_ringbuffer_ref(struct fd_ringbuffer *ring) +{ + STATIC_ASSERT(sizeof(ring->refcnt) <= sizeof(ring->__pad)); + atomic_inc(&ring->refcnt); + return ring; +} + +/* ringbuffers which are IB targets should set the toplevel rb (ie. + * the IB source) as it's parent before emitting reloc's, to ensure + * the bookkeeping works out properly. + */ +drm_public void fd_ringbuffer_set_parent(struct fd_ringbuffer *ring, + struct fd_ringbuffer *parent) +{ + /* state objects should not be parented! */ + assert(!(ring->flags & FD_RINGBUFFER_OBJECT)); + ring->parent = parent; +} + +drm_public void fd_ringbuffer_reset(struct fd_ringbuffer *ring) +{ + uint32_t *start = ring->start; + if (ring->pipe->id == FD_PIPE_2D) + start = &ring->start[0x140]; + ring->cur = ring->last_start = start; + if (ring->funcs->reset) + ring->funcs->reset(ring); +} + +drm_public int fd_ringbuffer_flush(struct fd_ringbuffer *ring) +{ + return ring->funcs->flush(ring, ring->last_start, -1, NULL); +} + +drm_public int fd_ringbuffer_flush2(struct fd_ringbuffer *ring, int in_fence_fd, + int *out_fence_fd) +{ + return ring->funcs->flush(ring, ring->last_start, in_fence_fd, out_fence_fd); +} + +drm_public void fd_ringbuffer_grow(struct fd_ringbuffer *ring, uint32_t ndwords) +{ + assert(ring->funcs->grow); /* unsupported on kgsl */ + + /* there is an upper bound on IB size, which appears to be 0x100000 */ + if (ring->size < 0x100000) + ring->size *= 2; + + ring->funcs->grow(ring, ring->size); + + ring->start = ring->funcs->hostptr(ring); + ring->end = &(ring->start[ring->size/4]); + + ring->cur = ring->last_start = ring->start; +} + +drm_public uint32_t fd_ringbuffer_timestamp(struct fd_ringbuffer *ring) +{ + return ring->last_timestamp; +} + +drm_public void fd_ringbuffer_reloc(struct fd_ringbuffer *ring, + const struct fd_reloc *reloc) +{ + assert(ring->pipe->gpu_id < 500); + ring->funcs->emit_reloc(ring, reloc); +} + +drm_public void fd_ringbuffer_reloc2(struct fd_ringbuffer *ring, + const struct fd_reloc *reloc) +{ + ring->funcs->emit_reloc(ring, reloc); +} + +drm_public uint32_t fd_ringbuffer_cmd_count(struct fd_ringbuffer *ring) +{ + if (!ring->funcs->cmd_count) + return 1; + return ring->funcs->cmd_count(ring); +} + +drm_public uint32_t +fd_ringbuffer_emit_reloc_ring_full(struct fd_ringbuffer *ring, + struct fd_ringbuffer *target, uint32_t cmd_idx) +{ + return ring->funcs->emit_reloc_ring(ring, target, cmd_idx); +} + +drm_public 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: + */ + assert(ring->flags & FD_RINGBUFFER_OBJECT); + return offset_bytes(ring->cur, ring->start); +} + |