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1 /*
2  * Copyright © 2014 Broadcom
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21  * IN THE SOFTWARE.
22  */
23 
24 #include <xf86drm.h>
25 #include <err.h>
26 
27 #include "pipe/p_defines.h"
28 #include "util/ralloc.h"
29 #include "util/u_inlines.h"
30 #include "util/u_memory.h"
31 #include "util/u_blitter.h"
32 #include "util/u_upload_mgr.h"
33 #include "indices/u_primconvert.h"
34 #include "pipe/p_screen.h"
35 
36 #include "vc4_screen.h"
37 #include "vc4_context.h"
38 #include "vc4_resource.h"
39 
40 void
vc4_flush(struct pipe_context * pctx)41 vc4_flush(struct pipe_context *pctx)
42 {
43         struct vc4_context *vc4 = vc4_context(pctx);
44 
45         hash_table_foreach(vc4->jobs, entry) {
46                 struct vc4_job *job = entry->data;
47                 vc4_job_submit(vc4, job);
48         }
49 }
50 
51 static void
vc4_pipe_flush(struct pipe_context * pctx,struct pipe_fence_handle ** fence,unsigned flags)52 vc4_pipe_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
53                unsigned flags)
54 {
55         struct vc4_context *vc4 = vc4_context(pctx);
56 
57         vc4_flush(pctx);
58 
59         if (fence) {
60                 struct pipe_screen *screen = pctx->screen;
61                 int fd = -1;
62 
63                 if (flags & PIPE_FLUSH_FENCE_FD) {
64                         /* The vc4_fence takes ownership of the returned fd. */
65                         drmSyncobjExportSyncFile(vc4->fd, vc4->job_syncobj,
66                                                  &fd);
67                 }
68 
69                 struct vc4_fence *f = vc4_fence_create(vc4->screen,
70                                                        vc4->last_emit_seqno,
71                                                        fd);
72                 screen->fence_reference(screen, fence, NULL);
73                 *fence = (struct pipe_fence_handle *)f;
74         }
75 }
76 
77 /* We can't flush the texture cache within rendering a tile, so we have to
78  * flush all rendering to the kernel so that the next job reading from the
79  * tile gets a flushed cache.
80  */
81 static void
vc4_texture_barrier(struct pipe_context * pctx,unsigned flags)82 vc4_texture_barrier(struct pipe_context *pctx, unsigned flags)
83 {
84         vc4_flush(pctx);
85 }
86 
87 static void
vc4_set_debug_callback(struct pipe_context * pctx,const struct pipe_debug_callback * cb)88 vc4_set_debug_callback(struct pipe_context *pctx,
89                        const struct pipe_debug_callback *cb)
90 {
91         struct vc4_context *vc4 = vc4_context(pctx);
92 
93         if (cb)
94                 vc4->debug = *cb;
95         else
96                 memset(&vc4->debug, 0, sizeof(vc4->debug));
97 }
98 
99 static void
vc4_invalidate_resource(struct pipe_context * pctx,struct pipe_resource * prsc)100 vc4_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
101 {
102         struct vc4_context *vc4 = vc4_context(pctx);
103         struct vc4_resource *rsc = vc4_resource(prsc);
104 
105         rsc->initialized_buffers = 0;
106 
107         struct hash_entry *entry = _mesa_hash_table_search(vc4->write_jobs,
108                                                            prsc);
109         if (!entry)
110                 return;
111 
112         struct vc4_job *job = entry->data;
113         if (job->key.zsbuf && job->key.zsbuf->texture == prsc)
114                 job->resolve &= ~(PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL);
115 }
116 
117 static void
vc4_context_destroy(struct pipe_context * pctx)118 vc4_context_destroy(struct pipe_context *pctx)
119 {
120         struct vc4_context *vc4 = vc4_context(pctx);
121 
122         vc4_flush(pctx);
123 
124         if (vc4->blitter)
125                 util_blitter_destroy(vc4->blitter);
126 
127         if (vc4->primconvert)
128                 util_primconvert_destroy(vc4->primconvert);
129 
130         if (vc4->uploader)
131                 u_upload_destroy(vc4->uploader);
132 
133         slab_destroy_child(&vc4->transfer_pool);
134 
135         pipe_surface_reference(&vc4->framebuffer.cbufs[0], NULL);
136         pipe_surface_reference(&vc4->framebuffer.zsbuf, NULL);
137 
138         if (vc4->yuv_linear_blit_vs)
139                 pctx->delete_vs_state(pctx, vc4->yuv_linear_blit_vs);
140         if (vc4->yuv_linear_blit_fs_8bit)
141                 pctx->delete_fs_state(pctx, vc4->yuv_linear_blit_fs_8bit);
142         if (vc4->yuv_linear_blit_fs_16bit)
143                 pctx->delete_fs_state(pctx, vc4->yuv_linear_blit_fs_16bit);
144 
145         vc4_program_fini(pctx);
146 
147         if (vc4->screen->has_syncobj) {
148                 drmSyncobjDestroy(vc4->fd, vc4->job_syncobj);
149                 drmSyncobjDestroy(vc4->fd, vc4->in_syncobj);
150         }
151         if (vc4->in_fence_fd >= 0)
152                 close(vc4->in_fence_fd);
153 
154         ralloc_free(vc4);
155 }
156 
157 struct pipe_context *
vc4_context_create(struct pipe_screen * pscreen,void * priv,unsigned flags)158 vc4_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
159 {
160         struct vc4_screen *screen = vc4_screen(pscreen);
161         struct vc4_context *vc4;
162         int err;
163 
164         /* Prevent dumping of the shaders built during context setup. */
165         uint32_t saved_shaderdb_flag = vc4_debug & VC4_DEBUG_SHADERDB;
166         vc4_debug &= ~VC4_DEBUG_SHADERDB;
167 
168         vc4 = rzalloc(NULL, struct vc4_context);
169         if (!vc4)
170                 return NULL;
171         struct pipe_context *pctx = &vc4->base;
172 
173         vc4->screen = screen;
174 
175         pctx->screen = pscreen;
176         pctx->priv = priv;
177         pctx->destroy = vc4_context_destroy;
178         pctx->flush = vc4_pipe_flush;
179         pctx->set_debug_callback = vc4_set_debug_callback;
180         pctx->invalidate_resource = vc4_invalidate_resource;
181         pctx->texture_barrier = vc4_texture_barrier;
182 
183         vc4_draw_init(pctx);
184         vc4_state_init(pctx);
185         vc4_program_init(pctx);
186         vc4_query_init(pctx);
187         vc4_resource_context_init(pctx);
188 
189         vc4->fd = screen->fd;
190 
191         err = vc4_job_init(vc4);
192         if (err)
193                 goto fail;
194 
195         err = vc4_fence_context_init(vc4);
196         if (err)
197                 goto fail;
198 
199         slab_create_child(&vc4->transfer_pool, &screen->transfer_pool);
200 
201 	vc4->uploader = u_upload_create_default(&vc4->base);
202 	vc4->base.stream_uploader = vc4->uploader;
203 	vc4->base.const_uploader = vc4->uploader;
204 
205 	vc4->blitter = util_blitter_create(pctx);
206         if (!vc4->blitter)
207                 goto fail;
208 
209         vc4->primconvert = util_primconvert_create(pctx,
210                                                    (1 << PIPE_PRIM_QUADS) - 1);
211         if (!vc4->primconvert)
212                 goto fail;
213 
214         vc4_debug |= saved_shaderdb_flag;
215 
216         vc4->sample_mask = (1 << VC4_MAX_SAMPLES) - 1;
217 
218         return &vc4->base;
219 
220 fail:
221         pctx->destroy(pctx);
222         return NULL;
223 }
224