freedreno_ringbuffer.c revision 3f012e29 
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
39struct fd_ringbuffer *
40fd_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
57void 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 */
67void fd_ringbuffer_set_parent(struct fd_ringbuffer *ring,
68					 struct fd_ringbuffer *parent)
69{
70	ring->parent = parent;
71}
72
73void 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? */
84int fd_ringbuffer_flush(struct fd_ringbuffer *ring)
85{
86	return ring->funcs->flush(ring, ring->last_start);
87}
88
89void 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
105uint32_t fd_ringbuffer_timestamp(struct fd_ringbuffer *ring)
106{
107	return ring->last_timestamp;
108}
109
110void fd_ringbuffer_reloc(struct fd_ringbuffer *ring,
111				    const struct fd_reloc *reloc)
112{
113	ring->funcs->emit_reloc(ring, reloc);
114}
115
116void 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
129uint32_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
136uint32_t
137fd_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
144struct 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
161void fd_ringmarker_del(struct fd_ringmarker *marker)
162{
163	free(marker);
164}
165
166void fd_ringmarker_mark(struct fd_ringmarker *marker)
167{
168	marker->cur = marker->ring->cur;
169}
170
171uint32_t fd_ringmarker_dwords(struct fd_ringmarker *start,
172					 struct fd_ringmarker *end)
173{
174	return end->cur - start->cur;
175}
176
177int fd_ringmarker_flush(struct fd_ringmarker *marker)
178{
179	struct fd_ringbuffer *ring = marker->ring;
180	return ring->funcs->flush(ring, marker->cur);
181}
182