1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* Command queue submission via DRM
*
* Copyright 2009 Thomas White <taw@bitwiz.org.uk>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <stdint.h>
#include <drm.h>
#include <glamo_drm.h>
#include <glamo_bo.h>
#include "glamo_context.h"
#include "glamo_cmdq.h"
/* Submit the prepared command sequence to the kernel */
void glamoDRMDispatch(glamoContext *gCtx)
{
drm_glamo_cmd_buffer_t cmdbuf;
int r;
cmdbuf.buf = (char *)gCtx->cmdq_drm;
cmdbuf.bufsz = gCtx->cmdq_drm_used * 2; /* -> bytes */
cmdbuf.nobjs = gCtx->cmdq_obj_used;
cmdbuf.objs = gCtx->cmdq_objs;
cmdbuf.obj_pos = gCtx->cmdq_obj_pos;
r = drmCommandWrite(gCtx->drm_fd, DRM_GLAMO_CMDBUF,
&cmdbuf, sizeof(cmdbuf));
if ( r != 0 ) {
fprintf(stderr, "DRM_GLAMO_CMDBUF failed\n");
}
/* Reset counts to zero for the next sequence */
gCtx->cmdq_obj_used = 0;
gCtx->cmdq_drm_used = 0;
}
void glamoDRMAddCommand(glamoContext *gCtx, uint16_t reg,
uint16_t val)
{
if ( gCtx->cmdq_drm_used == gCtx->cmdq_drm_size ) {
glamoDRMDispatch(gCtx);
}
/* Record command */
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = reg;
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = val;
}
void glamoDRMAddCommandBO(glamoContext *gCtx, uint16_t reg,
struct glamo_bo *bo)
{
if ( gCtx->cmdq_drm_used == gCtx->cmdq_drm_size ) {
glamoDRMDispatch(gCtx);
}
/* Record object position */
gCtx->cmdq_objs[gCtx->cmdq_obj_used] = bo->handle;
/* -> bytes */
gCtx->cmdq_obj_pos[gCtx->cmdq_obj_used] = gCtx->cmdq_drm_used * 2;
gCtx->cmdq_obj_used++;
/* Record command */
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = reg;
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = 0x0000;
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = reg+2;
gCtx->cmdq_drm[gCtx->cmdq_drm_used++] = 0x0000;
}
void glamoInitCmdqCache(glamoContext *gCtx)
{
gCtx->cmdq_objs = malloc(1024);
gCtx->cmdq_obj_pos = malloc(1024);
gCtx->cmdq_obj_used = 0;
gCtx->cmdq_drm_used = 0;
gCtx->cmdq_drm_size = 4 * 1024;
gCtx->cmdq_drm = malloc(gCtx->cmdq_drm_size);
}
|
