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 "pipe/p_screen.h"
34
35#include "vc4_screen.h"
36#include "vc4_context.h"
37#include "vc4_resource.h"
38
39void
40vc4_flush(struct pipe_context *pctx)
41{
42        struct vc4_context *vc4 = vc4_context(pctx);
43
44        hash_table_foreach(vc4->jobs, entry) {
45                struct vc4_job *job = entry->data;
46                vc4_job_submit(vc4, job);
47        }
48}
49
50static void
51vc4_pipe_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
52               unsigned flags)
53{
54        struct vc4_context *vc4 = vc4_context(pctx);
55
56        vc4_flush(pctx);
57
58        if (fence) {
59                struct pipe_screen *screen = pctx->screen;
60                int fd = -1;
61
62                if (flags & PIPE_FLUSH_FENCE_FD) {
63                        /* The vc4_fence takes ownership of the returned fd. */
64                        drmSyncobjExportSyncFile(vc4->fd, vc4->job_syncobj,
65                                                 &fd);
66                }
67
68                struct vc4_fence *f = vc4_fence_create(vc4->screen,
69                                                       vc4->last_emit_seqno,
70                                                       fd);
71                screen->fence_reference(screen, fence, NULL);
72                *fence = (struct pipe_fence_handle *)f;
73        }
74}
75
76/* We can't flush the texture cache within rendering a tile, so we have to
77 * flush all rendering to the kernel so that the next job reading from the
78 * tile gets a flushed cache.
79 */
80static void
81vc4_texture_barrier(struct pipe_context *pctx, unsigned flags)
82{
83        vc4_flush(pctx);
84}
85
86static void
87vc4_set_debug_callback(struct pipe_context *pctx,
88                       const struct util_debug_callback *cb)
89{
90        struct vc4_context *vc4 = vc4_context(pctx);
91
92        if (cb)
93                vc4->debug = *cb;
94        else
95                memset(&vc4->debug, 0, sizeof(vc4->debug));
96}
97
98static void
99vc4_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
100{
101        struct vc4_context *vc4 = vc4_context(pctx);
102        struct vc4_resource *rsc = vc4_resource(prsc);
103
104        rsc->initialized_buffers = 0;
105
106        struct hash_entry *entry = _mesa_hash_table_search(vc4->write_jobs,
107                                                           prsc);
108        if (!entry)
109                return;
110
111        struct vc4_job *job = entry->data;
112        if (job->key.zsbuf && job->key.zsbuf->texture == prsc)
113                job->resolve &= ~(PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL);
114}
115
116static void
117vc4_context_destroy(struct pipe_context *pctx)
118{
119        struct vc4_context *vc4 = vc4_context(pctx);
120
121        vc4_flush(pctx);
122
123        if (vc4->blitter)
124                util_blitter_destroy(vc4->blitter);
125
126        if (vc4->uploader)
127                u_upload_destroy(vc4->uploader);
128
129        slab_destroy_child(&vc4->transfer_pool);
130
131        pipe_surface_reference(&vc4->framebuffer.cbufs[0], NULL);
132        pipe_surface_reference(&vc4->framebuffer.zsbuf, NULL);
133
134        if (vc4->yuv_linear_blit_vs)
135                pctx->delete_vs_state(pctx, vc4->yuv_linear_blit_vs);
136        if (vc4->yuv_linear_blit_fs_8bit)
137                pctx->delete_fs_state(pctx, vc4->yuv_linear_blit_fs_8bit);
138        if (vc4->yuv_linear_blit_fs_16bit)
139                pctx->delete_fs_state(pctx, vc4->yuv_linear_blit_fs_16bit);
140
141        vc4_program_fini(pctx);
142
143        if (vc4->screen->has_syncobj) {
144                drmSyncobjDestroy(vc4->fd, vc4->job_syncobj);
145                drmSyncobjDestroy(vc4->fd, vc4->in_syncobj);
146        }
147        if (vc4->in_fence_fd >= 0)
148                close(vc4->in_fence_fd);
149
150        ralloc_free(vc4);
151}
152
153struct pipe_context *
154vc4_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
155{
156        struct vc4_screen *screen = vc4_screen(pscreen);
157        struct vc4_context *vc4;
158        int err;
159
160        /* Prevent dumping of the shaders built during context setup. */
161        uint32_t saved_shaderdb_flag = vc4_debug & VC4_DEBUG_SHADERDB;
162        vc4_debug &= ~VC4_DEBUG_SHADERDB;
163
164        vc4 = rzalloc(NULL, struct vc4_context);
165        if (!vc4)
166                return NULL;
167        struct pipe_context *pctx = &vc4->base;
168
169        vc4->screen = screen;
170
171        pctx->screen = pscreen;
172        pctx->priv = priv;
173        pctx->destroy = vc4_context_destroy;
174        pctx->flush = vc4_pipe_flush;
175        pctx->set_debug_callback = vc4_set_debug_callback;
176        pctx->invalidate_resource = vc4_invalidate_resource;
177        pctx->texture_barrier = vc4_texture_barrier;
178
179        vc4_draw_init(pctx);
180        vc4_state_init(pctx);
181        vc4_program_init(pctx);
182        vc4_query_init(pctx);
183        vc4_resource_context_init(pctx);
184
185        vc4->fd = screen->fd;
186
187        err = vc4_job_init(vc4);
188        if (err)
189                goto fail;
190
191        err = vc4_fence_context_init(vc4);
192        if (err)
193                goto fail;
194
195        slab_create_child(&vc4->transfer_pool, &screen->transfer_pool);
196
197	vc4->uploader = u_upload_create_default(&vc4->base);
198	vc4->base.stream_uploader = vc4->uploader;
199	vc4->base.const_uploader = vc4->uploader;
200
201	vc4->blitter = util_blitter_create(pctx);
202        if (!vc4->blitter)
203                goto fail;
204
205        vc4_debug |= saved_shaderdb_flag;
206
207        vc4->sample_mask = (1 << VC4_MAX_SAMPLES) - 1;
208
209        return &vc4->base;
210
211fail:
212        pctx->destroy(pctx);
213        return NULL;
214}
215