v3d_device_info.c revision 7ec681f3 
1/*
2 * Copyright © 2016 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 <errno.h>
25#include <stdio.h>
26#include <string.h>
27
28#include "common/v3d_device_info.h"
29#include "drm-uapi/v3d_drm.h"
30
31bool
32v3d_get_device_info(int fd, struct v3d_device_info* devinfo, v3d_ioctl_fun drm_ioctl) {
33    struct drm_v3d_get_param ident0 = {
34            .param = DRM_V3D_PARAM_V3D_CORE0_IDENT0,
35    };
36    struct drm_v3d_get_param ident1 = {
37            .param = DRM_V3D_PARAM_V3D_CORE0_IDENT1,
38    };
39    int ret;
40
41    ret = drm_ioctl(fd, DRM_IOCTL_V3D_GET_PARAM, &ident0);
42    if (ret != 0) {
43            fprintf(stderr, "Couldn't get V3D core IDENT0: %s\n",
44                    strerror(errno));
45            return false;
46    }
47    ret = drm_ioctl(fd, DRM_IOCTL_V3D_GET_PARAM, &ident1);
48    if (ret != 0) {
49            fprintf(stderr, "Couldn't get V3D core IDENT1: %s\n",
50                    strerror(errno));
51            return false;
52    }
53
54    uint32_t major = (ident0.value >> 24) & 0xff;
55    uint32_t minor = (ident1.value >> 0) & 0xf;
56
57    devinfo->ver = major * 10 + minor;
58
59    devinfo->vpm_size = (ident1.value >> 28 & 0xf) * 8192;
60
61    int nslc = (ident1.value >> 4) & 0xf;
62    int qups = (ident1.value >> 8) & 0xf;
63    devinfo->qpu_count = nslc * qups;
64
65    switch (devinfo->ver) {
66        case 33:
67        case 41:
68        case 42:
69                break;
70        default:
71                fprintf(stderr,
72                        "V3D %d.%d not supported by this version of Mesa.\n",
73                        devinfo->ver / 10,
74                        devinfo->ver % 10);
75                return false;
76    }
77
78    return true;
79}
80