freedreno/freedreno_ringbuffer.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2012 Rob Clark <robclark@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@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 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->pipe = pipe;
  49         ring->start = ring->funcs->hostptr(ring);
  50         ring->end = &(ring->start[ring->size/4]);
  51
  52         ring->cur = ring->last_start = ring->start;
  53
  54         return ring;
  55 }
  56
  57 void fd_ringbuffer_del(struct fd_ringbuffer *ring)
  58 {
  59         fd_ringbuffer_reset(ring);
  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 void fd_ringbuffer_set_parent(struct fd_ringbuffer *ring,
  68                                          struct fd_ringbuffer *parent)
  69 {
  70         ring->parent = parent;
  71 }
  72
  73 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 int fd_ringbuffer_flush(struct fd_ringbuffer *ring)
  85 {
  86         return ring->funcs->flush(ring, ring->last_start);
  87 }
  88
  89 void fd_ringbuffer_grow(struct fd_ringbuffer *ring, uint32_t ndwords)
  90 {
  91         assert(ring->funcs->grow);     /* unsupported on kgsl */
  92
  93         /* there is an upper bound on IB size, which appears to be 0x100000 */
  94         if (ring->size < 0x100000)
  95                 ring->size *= 2;
  96
  97         ring->funcs->grow(ring, ring->size);
  98
  99         ring->start = ring->funcs->hostptr(ring);
 100         ring->end = &(ring->start[ring->size/4]);
 101
 102         ring->cur = ring->last_start = ring->start;
 103 }
 104
 105 uint32_t fd_ringbuffer_timestamp(struct fd_ringbuffer *ring)
 106 {
 107         return ring->last_timestamp;
 108 }
 109
 110 void fd_ringbuffer_reloc(struct fd_ringbuffer *ring,
 111                                     const struct fd_reloc *reloc)
 112 {
 113         ring->funcs->emit_reloc(ring, reloc);
 114 }
 115
 116 void fd_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring,
 117                 struct fd_ringmarker *target, struct fd_ringmarker *end)
 118 {
 119         uint32_t submit_offset, size;
 120
 121         assert(target->ring == end->ring);
 122
 123         submit_offset = offset_bytes(target->cur, target->ring->start);
 124         size = offset_bytes(end->cur, target->cur);
 125
 126         ring->funcs->emit_reloc_ring(ring, target->ring, 0, submit_offset, size);
 127 }
 128
 129 uint32_t fd_ringbuffer_cmd_count(struct fd_ringbuffer *ring)
 130 {
 131         if (!ring->funcs->cmd_count)
 132                 return 1;
 133         return ring->funcs->cmd_count(ring);
 134 }
 135
 136 uint32_t
 137 fd_ringbuffer_emit_reloc_ring_full(struct fd_ringbuffer *ring,
 138                 struct fd_ringbuffer *target, uint32_t cmd_idx)
 139 {
 140         uint32_t size = offset_bytes(target->cur, target->start);
 141         return ring->funcs->emit_reloc_ring(ring, target, cmd_idx, 0, size);
 142 }
 143
 144 struct fd_ringmarker * fd_ringmarker_new(struct fd_ringbuffer *ring)
 145 {
 146         struct fd_ringmarker *marker = NULL;
 147
 148         marker = calloc(1, sizeof(*marker));
 149         if (!marker) {
 150                 ERROR_MSG("allocation failed");
 151                 return NULL;
 152         }
 153
 154         marker->ring = ring;
 155
 156         marker->cur = marker->ring->cur;
 157
 158         return marker;
 159 }
 160
 161 void fd_ringmarker_del(struct fd_ringmarker *marker)
 162 {
 163         free(marker);
 164 }
 165
 166 void fd_ringmarker_mark(struct fd_ringmarker *marker)
 167 {
 168         marker->cur = marker->ring->cur;
 169 }
 170
 171 uint32_t fd_ringmarker_dwords(struct fd_ringmarker *start,
 172                                          struct fd_ringmarker *end)
 173 {
 174         return end->cur - start->cur;
 175 }
 176
 177 int fd_ringmarker_flush(struct fd_ringmarker *marker)
 178 {
 179         struct fd_ringbuffer *ring = marker->ring;
 180         return ring->funcs->flush(ring, marker->cur);
 181 }