1 /*
2 * Copyright © 2022 Imagination Technologies Ltd.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * 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 THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 */
23
24 #include "rogue.h"
25 #include "rogue_builder.h"
26 #include "util/macros.h"
27
28 #include <stdbool.h>
29
30 /**
31 * \file rogue_schedule_wdf.c
32 *
33 * \brief Contains the rogue_schedule_wdf pass.
34 */
35
36 static bool
rogue_insert_wdf(rogue_builder * b,rogue_drc_trxn * drc_trxn,unsigned num)37 rogue_insert_wdf(rogue_builder *b, rogue_drc_trxn *drc_trxn, unsigned num)
38 {
39 assert(drc_trxn->acquire);
40
41 if (drc_trxn->release)
42 return false;
43
44 b->cursor = rogue_cursor_after_instr(drc_trxn->acquire);
45 drc_trxn->release = &rogue_WDF(b, rogue_ref_drc_trxn(num, drc_trxn))->instr;
46
47 return true;
48 }
49
50 /* Schedules WDF instructions for DRC transactions. */
51 PUBLIC
rogue_schedule_wdf(rogue_shader * shader,bool latency_hiding)52 bool rogue_schedule_wdf(rogue_shader *shader, bool latency_hiding)
53 {
54 if (shader->is_grouped)
55 return false;
56
57 /* TODO: Add support for delayed scheduling (latency hiding). */
58 if (latency_hiding)
59 unreachable("Latency hiding is unimplemented.");
60
61 bool progress = false;
62
63 rogue_builder b;
64 rogue_builder_init(&b, shader);
65
66 rogue_foreach_drc_trxn (drc_trxn, shader, 0)
67 progress |= rogue_insert_wdf(&b, drc_trxn, 0);
68
69 rogue_foreach_drc_trxn (drc_trxn, shader, 1)
70 progress |= rogue_insert_wdf(&b, drc_trxn, 1);
71
72 return progress;
73 }
74