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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         struct hash_entry *entry;
46         hash_table_foreach(vc4->jobs, entry) {
47                 struct vc4_job *job = entry->data;
48                 vc4_job_submit(vc4, job);
49         }
50 }
51 
52 static void
vc4_pipe_flush(struct pipe_context * pctx,struct pipe_fence_handle ** fence,unsigned flags)53 vc4_pipe_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
54                unsigned flags)
55 {
56         struct vc4_context *vc4 = vc4_context(pctx);
57 
58         vc4_flush(pctx);
59 
60         if (fence) {
61                 struct pipe_screen *screen = pctx->screen;
62                 struct vc4_fence *f = vc4_fence_create(vc4->screen,
63                                                        vc4->last_emit_seqno);
64                 screen->fence_reference(screen, fence, NULL);
65                 *fence = (struct pipe_fence_handle *)f;
66         }
67 }
68 
69 /* We can't flush the texture cache within rendering a tile, so we have to
70  * flush all rendering to the kernel so that the next job reading from the
71  * tile gets a flushed cache.
72  */
73 static void
vc4_texture_barrier(struct pipe_context * pctx,unsigned flags)74 vc4_texture_barrier(struct pipe_context *pctx, unsigned flags)
75 {
76         vc4_flush(pctx);
77 }
78 
79 static void
vc4_invalidate_resource(struct pipe_context * pctx,struct pipe_resource * prsc)80 vc4_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
81 {
82         struct vc4_context *vc4 = vc4_context(pctx);
83         struct vc4_resource *rsc = vc4_resource(prsc);
84 
85         rsc->initialized_buffers = 0;
86 
87         struct hash_entry *entry = _mesa_hash_table_search(vc4->write_jobs,
88                                                            prsc);
89         if (!entry)
90                 return;
91 
92         struct vc4_job *job = entry->data;
93         if (job->key.zsbuf && job->key.zsbuf->texture == prsc)
94                 job->resolve &= ~(PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL);
95 }
96 
97 static void
vc4_context_destroy(struct pipe_context * pctx)98 vc4_context_destroy(struct pipe_context *pctx)
99 {
100         struct vc4_context *vc4 = vc4_context(pctx);
101 
102         vc4_flush(pctx);
103 
104         if (vc4->blitter)
105                 util_blitter_destroy(vc4->blitter);
106 
107         if (vc4->primconvert)
108                 util_primconvert_destroy(vc4->primconvert);
109 
110         if (vc4->uploader)
111                 u_upload_destroy(vc4->uploader);
112 
113         slab_destroy_child(&vc4->transfer_pool);
114 
115         pipe_surface_reference(&vc4->framebuffer.cbufs[0], NULL);
116         pipe_surface_reference(&vc4->framebuffer.zsbuf, NULL);
117 
118         vc4_program_fini(pctx);
119 
120         ralloc_free(vc4);
121 }
122 
123 struct pipe_context *
vc4_context_create(struct pipe_screen * pscreen,void * priv,unsigned flags)124 vc4_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
125 {
126         struct vc4_screen *screen = vc4_screen(pscreen);
127         struct vc4_context *vc4;
128 
129         /* Prevent dumping of the shaders built during context setup. */
130         uint32_t saved_shaderdb_flag = vc4_debug & VC4_DEBUG_SHADERDB;
131         vc4_debug &= ~VC4_DEBUG_SHADERDB;
132 
133         vc4 = rzalloc(NULL, struct vc4_context);
134         if (!vc4)
135                 return NULL;
136         struct pipe_context *pctx = &vc4->base;
137 
138         vc4->screen = screen;
139 
140         pctx->screen = pscreen;
141         pctx->priv = priv;
142         pctx->destroy = vc4_context_destroy;
143         pctx->flush = vc4_pipe_flush;
144         pctx->invalidate_resource = vc4_invalidate_resource;
145         pctx->texture_barrier = vc4_texture_barrier;
146 
147         vc4_draw_init(pctx);
148         vc4_state_init(pctx);
149         vc4_program_init(pctx);
150         vc4_query_init(pctx);
151         vc4_resource_context_init(pctx);
152 
153         vc4_job_init(vc4);
154 
155         vc4->fd = screen->fd;
156 
157         slab_create_child(&vc4->transfer_pool, &screen->transfer_pool);
158 
159 	vc4->uploader = u_upload_create_default(&vc4->base);
160 	vc4->base.stream_uploader = vc4->uploader;
161 	vc4->base.const_uploader = vc4->uploader;
162 
163 	vc4->blitter = util_blitter_create(pctx);
164         if (!vc4->blitter)
165                 goto fail;
166 
167         vc4->primconvert = util_primconvert_create(pctx,
168                                                    (1 << PIPE_PRIM_QUADS) - 1);
169         if (!vc4->primconvert)
170                 goto fail;
171 
172         vc4_debug |= saved_shaderdb_flag;
173 
174         vc4->sample_mask = (1 << VC4_MAX_SAMPLES) - 1;
175 
176         return &vc4->base;
177 
178 fail:
179         pctx->destroy(pctx);
180         return NULL;
181 }
182