1 /*
2 * Copyright © 2019 Raspberry Pi
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 "v3dv_private.h"
25 #include "broadcom/cle/v3dx_pack.h"
26
27 void
v3dv_cl_init(struct v3dv_job * job,struct v3dv_cl * cl)28 v3dv_cl_init(struct v3dv_job *job, struct v3dv_cl *cl)
29 {
30 cl->base = NULL;
31 cl->next = cl->base;
32 cl->bo = NULL;
33 cl->size = 0;
34 cl->job = job;
35 list_inithead(&cl->bo_list);
36 }
37
38 void
v3dv_cl_destroy(struct v3dv_cl * cl)39 v3dv_cl_destroy(struct v3dv_cl *cl)
40 {
41 list_for_each_entry_safe(struct v3dv_bo, bo, &cl->bo_list, list_link) {
42 assert(cl->job);
43 list_del(&bo->list_link);
44 v3dv_bo_free(cl->job->device, bo);
45 }
46
47 /* Leave the CL in a reset state to catch use after destroy instances */
48 v3dv_cl_init(NULL, cl);
49 }
50
51 static bool
cl_alloc_bo(struct v3dv_cl * cl,uint32_t space,bool use_branch)52 cl_alloc_bo(struct v3dv_cl *cl, uint32_t space, bool use_branch)
53 {
54 struct v3dv_bo *bo = v3dv_bo_alloc(cl->job->device, space, "CL", true);
55 if (!bo) {
56 fprintf(stderr, "failed to allocate memory for command list\n");
57 v3dv_flag_oom(NULL, cl->job);
58 return false;
59 }
60
61 list_addtail(&bo->list_link, &cl->bo_list);
62
63 bool ok = v3dv_bo_map(cl->job->device, bo, bo->size);
64 if (!ok) {
65 fprintf(stderr, "failed to map command list buffer\n");
66 v3dv_flag_oom(NULL, cl->job);
67 return false;
68 }
69
70 /* Chain to the new BO from the old one if requested */
71 if (use_branch && cl->bo) {
72 cl_emit(cl, BRANCH, branch) {
73 branch.address = v3dv_cl_address(bo, 0);
74 }
75 }
76
77 v3dv_job_add_bo(cl->job, bo);
78
79 cl->bo = bo;
80 cl->base = cl->bo->map;
81 cl->size = cl->bo->size;
82 cl->next = cl->base;
83
84 return true;
85 }
86
87 uint32_t
v3dv_cl_ensure_space(struct v3dv_cl * cl,uint32_t space,uint32_t alignment)88 v3dv_cl_ensure_space(struct v3dv_cl *cl, uint32_t space, uint32_t alignment)
89 {
90 uint32_t offset = align(v3dv_cl_offset(cl), alignment);
91
92 if (offset + space <= cl->size) {
93 cl->next = cl->base + offset;
94 return offset;
95 }
96
97 cl_alloc_bo(cl, space, false);
98 return 0;
99 }
100
101 void
v3dv_cl_ensure_space_with_branch(struct v3dv_cl * cl,uint32_t space)102 v3dv_cl_ensure_space_with_branch(struct v3dv_cl *cl, uint32_t space)
103 {
104 if (v3dv_cl_offset(cl) + space + cl_packet_length(BRANCH) <= cl->size)
105 return;
106
107 cl_alloc_bo(cl, space, true);
108 }
109