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/* -*- 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);
}
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