v3d_cl.c revision 01e04c3f 
1/*
2 * Copyright © 2014-2017 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 "util/u_math.h"
25#include "util/ralloc.h"
26#include "v3d_context.h"
27/* The branching packets are the same across V3D versions. */
28#define V3D_VERSION 33
29#include "broadcom/common/v3d_macros.h"
30#include "broadcom/cle/v3dx_pack.h"
31
32void
33v3d_init_cl(struct v3d_job *job, struct v3d_cl *cl)
34{
35        cl->base = NULL;
36        cl->next = cl->base;
37        cl->size = 0;
38        cl->job = job;
39}
40
41uint32_t
42v3d_cl_ensure_space(struct v3d_cl *cl, uint32_t space, uint32_t alignment)
43{
44        uint32_t offset = align(cl_offset(cl), alignment);
45
46        if (offset + space <= cl->size) {
47                cl->next = cl->base + offset;
48                return offset;
49        }
50
51        v3d_bo_unreference(&cl->bo);
52        cl->bo = v3d_bo_alloc(cl->job->v3d->screen, align(space, 4096), "CL");
53        cl->base = v3d_bo_map(cl->bo);
54        cl->size = cl->bo->size;
55        cl->next = cl->base;
56
57        return 0;
58}
59
60void
61v3d_cl_ensure_space_with_branch(struct v3d_cl *cl, uint32_t space)
62{
63        if (cl_offset(cl) + space + cl_packet_length(BRANCH) <= cl->size)
64                return;
65
66        struct v3d_bo *new_bo = v3d_bo_alloc(cl->job->v3d->screen, 4096, "CL");
67        assert(space <= new_bo->size);
68
69        /* Chain to the new BO from the old one. */
70        if (cl->bo) {
71                cl_emit(cl, BRANCH, branch) {
72                        branch.address = cl_address(new_bo, 0);
73                }
74                v3d_bo_unreference(&cl->bo);
75        } else {
76                /* Root the first RCL/BCL BO in the job. */
77                v3d_job_add_bo(cl->job, cl->bo);
78        }
79
80        cl->bo = new_bo;
81        cl->base = v3d_bo_map(cl->bo);
82        cl->size = cl->bo->size;
83        cl->next = cl->base;
84}
85
86void
87v3d_destroy_cl(struct v3d_cl *cl)
88{
89        v3d_bo_unreference(&cl->bo);
90}
91