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      1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
      2 
      3 /*
      4  * Copyright (C) 2012 Rob Clark <robclark (at) freedesktop.org>
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice (including the next
     14  * paragraph) shall be included in all copies or substantial portions of the
     15  * Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     23  * SOFTWARE.
     24  *
     25  * Authors:
     26  *    Rob Clark <robclark (at) freedesktop.org>
     27  */
     28 
     29 #ifdef HAVE_CONFIG_H
     30 # include <config.h>
     31 #endif
     32 
     33 #include <assert.h>
     34 
     35 #include "freedreno_drmif.h"
     36 #include "freedreno_priv.h"
     37 #include "freedreno_ringbuffer.h"
     38 
     39 drm_public struct fd_ringbuffer *
     40 fd_ringbuffer_new(struct fd_pipe *pipe, uint32_t size)
     41 {
     42 	struct fd_ringbuffer *ring;
     43 
     44 	ring = pipe->funcs->ringbuffer_new(pipe, size);
     45 	if (!ring)
     46 		return NULL;
     47 
     48 	ring->size = size;
     49 	ring->pipe = pipe;
     50 	ring->start = ring->funcs->hostptr(ring);
     51 	ring->end = &(ring->start[size/4]);
     52 
     53 	ring->cur = ring->last_start = ring->start;
     54 
     55 	return ring;
     56 }
     57 
     58 drm_public void fd_ringbuffer_del(struct fd_ringbuffer *ring)
     59 {
     60 	ring->funcs->destroy(ring);
     61 }
     62 
     63 /* ringbuffers which are IB targets should set the toplevel rb (ie.
     64  * the IB source) as it's parent before emitting reloc's, to ensure
     65  * the bookkeeping works out properly.
     66  */
     67 drm_public void fd_ringbuffer_set_parent(struct fd_ringbuffer *ring,
     68 					 struct fd_ringbuffer *parent)
     69 {
     70 	ring->parent = parent;
     71 }
     72 
     73 drm_public void fd_ringbuffer_reset(struct fd_ringbuffer *ring)
     74 {
     75 	uint32_t *start = ring->start;
     76 	if (ring->pipe->id == FD_PIPE_2D)
     77 		start = &ring->start[0x140];
     78 	ring->cur = ring->last_start = start;
     79 	if (ring->funcs->reset)
     80 		ring->funcs->reset(ring);
     81 }
     82 
     83 /* maybe get rid of this and use fd_ringmarker_flush() from DDX too? */
     84 drm_public int fd_ringbuffer_flush(struct fd_ringbuffer *ring)
     85 {
     86 	return ring->funcs->flush(ring, ring->last_start);
     87 }
     88 
     89 drm_public uint32_t fd_ringbuffer_timestamp(struct fd_ringbuffer *ring)
     90 {
     91 	return ring->last_timestamp;
     92 }
     93 
     94 drm_public void fd_ringbuffer_reloc(struct fd_ringbuffer *ring,
     95 				    const struct fd_reloc *reloc)
     96 {
     97 	ring->funcs->emit_reloc(ring, reloc);
     98 }
     99 
    100 drm_public void
    101 fd_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring,
    102 			      struct fd_ringmarker *target,
    103 			      struct fd_ringmarker *end)
    104 {
    105 	assert(target->ring == end->ring);
    106 	ring->funcs->emit_reloc_ring(ring, target, end);
    107 }
    108 
    109 drm_public struct fd_ringmarker * fd_ringmarker_new(struct fd_ringbuffer *ring)
    110 {
    111 	struct fd_ringmarker *marker = NULL;
    112 
    113 	marker = calloc(1, sizeof(*marker));
    114 	if (!marker) {
    115 		ERROR_MSG("allocation failed");
    116 		return NULL;
    117 	}
    118 
    119 	marker->ring = ring;
    120 
    121 	fd_ringmarker_mark(marker);
    122 
    123 	return marker;
    124 }
    125 
    126 drm_public void fd_ringmarker_del(struct fd_ringmarker *marker)
    127 {
    128 	free(marker);
    129 }
    130 
    131 drm_public void fd_ringmarker_mark(struct fd_ringmarker *marker)
    132 {
    133 	marker->cur = marker->ring->cur;
    134 }
    135 
    136 drm_public uint32_t fd_ringmarker_dwords(struct fd_ringmarker *start,
    137 					 struct fd_ringmarker *end)
    138 {
    139 	return end->cur - start->cur;
    140 }
    141 
    142 drm_public int fd_ringmarker_flush(struct fd_ringmarker *marker)
    143 {
    144 	struct fd_ringbuffer *ring = marker->ring;
    145 	return ring->funcs->flush(ring, marker->cur);
    146 }
    147