winsys/radeon: hook up the new DRM_RADEON_GEM_WAIT ioctl
[mesa.git] / src / gallium / drivers / r300 / r300_transfer.c
1 /*
2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 * Copyright 2010 Marek Olšák <maraeo@gmail.com>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
23
24 #include "r300_transfer.h"
25 #include "r300_texture_desc.h"
26 #include "r300_screen_buffer.h"
27
28 #include "util/u_memory.h"
29 #include "util/u_format.h"
30 #include "util/u_box.h"
31
32 struct r300_transfer {
33 /* Parent class */
34 struct pipe_transfer transfer;
35
36 /* Offset from start of buffer. */
37 unsigned offset;
38
39 /* Linear texture. */
40 struct r300_resource *linear_texture;
41 };
42
43 /* Convenience cast wrapper. */
44 static INLINE struct r300_transfer*
45 r300_transfer(struct pipe_transfer* transfer)
46 {
47 return (struct r300_transfer*)transfer;
48 }
49
50 /* Copy from a tiled texture to a detiled one. */
51 static void r300_copy_from_tiled_texture(struct pipe_context *ctx,
52 struct r300_transfer *r300transfer)
53 {
54 struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
55 struct pipe_resource *tex = transfer->resource;
56
57 ctx->resource_copy_region(ctx, &r300transfer->linear_texture->b.b.b, 0,
58 0, 0, 0,
59 tex, transfer->level, &transfer->box);
60 }
61
62 /* Copy a detiled texture to a tiled one. */
63 static void r300_copy_into_tiled_texture(struct pipe_context *ctx,
64 struct r300_transfer *r300transfer)
65 {
66 struct pipe_transfer *transfer = (struct pipe_transfer*)r300transfer;
67 struct pipe_resource *tex = transfer->resource;
68 struct pipe_box src_box;
69 u_box_origin_2d(transfer->box.width, transfer->box.height, &src_box);
70
71 ctx->resource_copy_region(ctx, tex, transfer->level,
72 transfer->box.x, transfer->box.y, transfer->box.z,
73 &r300transfer->linear_texture->b.b.b, 0, &src_box);
74
75 /* XXX remove this. */
76 r300_flush(ctx, 0, NULL);
77 }
78
79 struct pipe_transfer*
80 r300_texture_get_transfer(struct pipe_context *ctx,
81 struct pipe_resource *texture,
82 unsigned level,
83 unsigned usage,
84 const struct pipe_box *box)
85 {
86 struct r300_context *r300 = r300_context(ctx);
87 struct r300_resource *tex = r300_resource(texture);
88 struct r300_transfer *trans;
89 struct pipe_resource base;
90 boolean referenced_cs, referenced_hw, blittable;
91 const struct util_format_description *desc =
92 util_format_description(texture->format);
93
94 referenced_cs =
95 r300->rws->cs_is_buffer_referenced(r300->cs, tex->cs_buf);
96 if (referenced_cs) {
97 referenced_hw = TRUE;
98 } else {
99 referenced_hw =
100 r300->rws->buffer_is_busy(tex->buf, RADEON_USAGE_READWRITE);
101 }
102
103 blittable = desc->layout == UTIL_FORMAT_LAYOUT_PLAIN ||
104 desc->layout == UTIL_FORMAT_LAYOUT_S3TC ||
105 desc->layout == UTIL_FORMAT_LAYOUT_RGTC;
106
107 trans = CALLOC_STRUCT(r300_transfer);
108 if (trans) {
109 /* Initialize the transfer object. */
110 pipe_resource_reference(&trans->transfer.resource, texture);
111 trans->transfer.level = level;
112 trans->transfer.usage = usage;
113 trans->transfer.box = *box;
114
115 /* If the texture is tiled, we must create a temporary detiled texture
116 * for this transfer.
117 * Also make write transfers pipelined. */
118 if (tex->tex.microtile || tex->tex.macrotile[level] ||
119 (referenced_hw && blittable && !(usage & PIPE_TRANSFER_READ))) {
120 if (r300->blitter->running) {
121 fprintf(stderr, "r300: ERROR: Blitter recursion in texture_get_transfer.\n");
122 os_break();
123 }
124
125 base.target = PIPE_TEXTURE_2D;
126 base.format = texture->format;
127 base.width0 = box->width;
128 base.height0 = box->height;
129 base.depth0 = 1;
130 base.array_size = 1;
131 base.last_level = 0;
132 base.nr_samples = 0;
133 base.usage = PIPE_USAGE_DYNAMIC;
134 base.bind = 0;
135 base.flags = R300_RESOURCE_FLAG_TRANSFER;
136
137 /* For texture reading, the temporary (detiled) texture is used as
138 * a render target when blitting from a tiled texture. */
139 if (usage & PIPE_TRANSFER_READ) {
140 base.bind |= PIPE_BIND_RENDER_TARGET;
141 }
142 /* For texture writing, the temporary texture is used as a sampler
143 * when blitting into a tiled texture. */
144 if (usage & PIPE_TRANSFER_WRITE) {
145 base.bind |= PIPE_BIND_SAMPLER_VIEW;
146 }
147
148 /* Create the temporary texture. */
149 trans->linear_texture = r300_resource(
150 ctx->screen->resource_create(ctx->screen,
151 &base));
152
153 if (!trans->linear_texture) {
154 /* Oh crap, the thing can't create the texture.
155 * Let's flush and try again. */
156 r300_flush(ctx, 0, NULL);
157
158 trans->linear_texture = r300_resource(
159 ctx->screen->resource_create(ctx->screen,
160 &base));
161
162 if (!trans->linear_texture) {
163 /* For linear textures, it's safe to fallback to
164 * an unpipelined transfer. */
165 if (!tex->tex.microtile && !tex->tex.macrotile[level]) {
166 goto unpipelined;
167 }
168
169 /* Otherwise, go to hell. */
170 fprintf(stderr,
171 "r300: Failed to create a transfer object, praise.\n");
172 FREE(trans);
173 return NULL;
174 }
175 }
176
177 assert(!trans->linear_texture->tex.microtile &&
178 !trans->linear_texture->tex.macrotile[0]);
179
180 /* Set the stride. */
181 trans->transfer.stride =
182 trans->linear_texture->tex.stride_in_bytes[0];
183
184 if (usage & PIPE_TRANSFER_READ) {
185 /* We cannot map a tiled texture directly because the data is
186 * in a different order, therefore we do detiling using a blit. */
187 r300_copy_from_tiled_texture(ctx, trans);
188
189 /* Always referenced in the blit. */
190 r300_flush(ctx, 0, NULL);
191 }
192 return &trans->transfer;
193 }
194
195 unpipelined:
196 /* Unpipelined transfer. */
197 trans->transfer.stride = tex->tex.stride_in_bytes[level];
198 trans->offset = r300_texture_get_offset(tex, level, box->z);
199
200 if (referenced_cs &&
201 !(usage & PIPE_TRANSFER_UNSYNCHRONIZED))
202 r300_flush(ctx, 0, NULL);
203 return &trans->transfer;
204 }
205 return NULL;
206 }
207
208 void r300_texture_transfer_destroy(struct pipe_context *ctx,
209 struct pipe_transfer *trans)
210 {
211 struct r300_transfer *r300transfer = r300_transfer(trans);
212
213 if (r300transfer->linear_texture) {
214 if (trans->usage & PIPE_TRANSFER_WRITE) {
215 r300_copy_into_tiled_texture(ctx, r300transfer);
216 }
217
218 pipe_resource_reference(
219 (struct pipe_resource**)&r300transfer->linear_texture, NULL);
220 }
221 pipe_resource_reference(&trans->resource, NULL);
222 FREE(trans);
223 }
224
225 void* r300_texture_transfer_map(struct pipe_context *ctx,
226 struct pipe_transfer *transfer)
227 {
228 struct r300_context *r300 = r300_context(ctx);
229 struct radeon_winsys *rws = (struct radeon_winsys *)ctx->winsys;
230 struct r300_transfer *r300transfer = r300_transfer(transfer);
231 struct r300_resource *tex = r300_resource(transfer->resource);
232 char *map;
233 enum pipe_format format = tex->b.b.b.format;
234
235 if (r300transfer->linear_texture) {
236 /* The detiled texture is of the same size as the region being mapped
237 * (no offset needed). */
238 return rws->buffer_map(r300transfer->linear_texture->buf,
239 r300->cs,
240 transfer->usage);
241 } else {
242 /* Tiling is disabled. */
243 map = rws->buffer_map(tex->buf, r300->cs,
244 transfer->usage);
245
246 if (!map) {
247 return NULL;
248 }
249
250 return map + r300_transfer(transfer)->offset +
251 transfer->box.y / util_format_get_blockheight(format) * transfer->stride +
252 transfer->box.x / util_format_get_blockwidth(format) * util_format_get_blocksize(format);
253 }
254 }
255
256 void r300_texture_transfer_unmap(struct pipe_context *ctx,
257 struct pipe_transfer *transfer)
258 {
259 struct radeon_winsys *rws = (struct radeon_winsys *)ctx->winsys;
260 struct r300_transfer *r300transfer = r300_transfer(transfer);
261 struct r300_resource *tex = r300_resource(transfer->resource);
262
263 if (r300transfer->linear_texture) {
264 rws->buffer_unmap(r300transfer->linear_texture->buf);
265 } else {
266 rws->buffer_unmap(tex->buf);
267 }
268 }