34a06d83ae7baba995f6d16e5e78ddfe051a1faa
[platform/upstream/libdrm.git] / 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->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 void fd_ringbuffer_del(struct fd_ringbuffer *ring)
59 {
60         fd_ringbuffer_reset(ring);
61         ring->funcs->destroy(ring);
62 }
63
64 /* ringbuffers which are IB targets should set the toplevel rb (ie.
65  * the IB source) as it's parent before emitting reloc's, to ensure
66  * the bookkeeping works out properly.
67  */
68 void fd_ringbuffer_set_parent(struct fd_ringbuffer *ring,
69                                          struct fd_ringbuffer *parent)
70 {
71         ring->parent = parent;
72 }
73
74 void fd_ringbuffer_reset(struct fd_ringbuffer *ring)
75 {
76         uint32_t *start = ring->start;
77         if (ring->pipe->id == FD_PIPE_2D)
78                 start = &ring->start[0x140];
79         ring->cur = ring->last_start = start;
80         if (ring->funcs->reset)
81                 ring->funcs->reset(ring);
82 }
83
84 /* maybe get rid of this and use fd_ringmarker_flush() from DDX too? */
85 int fd_ringbuffer_flush(struct fd_ringbuffer *ring)
86 {
87         return ring->funcs->flush(ring, ring->last_start);
88 }
89
90 uint32_t fd_ringbuffer_timestamp(struct fd_ringbuffer *ring)
91 {
92         return ring->last_timestamp;
93 }
94
95 void fd_ringbuffer_reloc(struct fd_ringbuffer *ring,
96                                     const struct fd_reloc *reloc)
97 {
98         ring->funcs->emit_reloc(ring, reloc);
99 }
100
101 void fd_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring,
102                 struct fd_ringmarker *target, struct fd_ringmarker *end)
103 {
104         uint32_t submit_offset, size;
105
106         assert(target->ring == end->ring);
107
108         submit_offset = offset_bytes(target->cur, target->ring->start);
109         size = offset_bytes(end->cur, target->cur);
110
111         ring->funcs->emit_reloc_ring(ring, target->ring, submit_offset, size);
112 }
113
114 uint32_t
115 fd_ringbuffer_emit_reloc_ring_full(struct fd_ringbuffer *ring,
116                 struct fd_ringbuffer *target, uint32_t cmd_idx)
117 {
118         uint32_t size = offset_bytes(target->cur, target->start);
119         assert(cmd_idx == 0);
120         ring->funcs->emit_reloc_ring(ring, target, 0, size);
121         return size;
122 }
123
124 struct fd_ringmarker * fd_ringmarker_new(struct fd_ringbuffer *ring)
125 {
126         struct fd_ringmarker *marker = NULL;
127
128         marker = calloc(1, sizeof(*marker));
129         if (!marker) {
130                 ERROR_MSG("allocation failed");
131                 return NULL;
132         }
133
134         marker->ring = ring;
135
136         marker->cur = marker->ring->cur;
137
138         return marker;
139 }
140
141 void fd_ringmarker_del(struct fd_ringmarker *marker)
142 {
143         free(marker);
144 }
145
146 void fd_ringmarker_mark(struct fd_ringmarker *marker)
147 {
148         marker->cur = marker->ring->cur;
149 }
150
151 uint32_t fd_ringmarker_dwords(struct fd_ringmarker *start,
152                                          struct fd_ringmarker *end)
153 {
154         return end->cur - start->cur;
155 }
156
157 int fd_ringmarker_flush(struct fd_ringmarker *marker)
158 {
159         struct fd_ringbuffer *ring = marker->ring;
160         return ring->funcs->flush(ring, marker->cur);
161 }