v3d: moving v3d simulator to src/broadcom
[mesa.git] / src / broadcom / drm-shim / v3d_noop.c
1 /*
2 * Copyright © 2018 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
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 #include <limits.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <sys/ioctl.h>
28 #include "drm-uapi/v3d_drm.h"
29 #include "drm-shim/drm_shim.h"
30
31 bool drm_shim_driver_prefers_first_render_node = true;
32
33 struct v3d_bo {
34 struct shim_bo base;
35 uint32_t offset;
36 };
37
38 static struct v3d_bo *
39 v3d_bo(struct shim_bo *bo)
40 {
41 return (struct v3d_bo *)bo;
42 }
43
44 struct v3d_device {
45 uint32_t next_offset;
46 };
47
48 static struct v3d_device v3d = {
49 .next_offset = 0x1000,
50 };
51
52 static int
53 v3d_ioctl_noop(int fd, unsigned long request, void *arg)
54 {
55 return 0;
56 }
57
58 static int
59 v3d_ioctl_create_bo(int fd, unsigned long request, void *arg)
60 {
61 struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
62 struct drm_v3d_create_bo *create = arg;
63 struct v3d_bo *bo = calloc(1, sizeof(*bo));
64
65 drm_shim_bo_init(&bo->base, create->size);
66
67 assert(UINT_MAX - v3d.next_offset > create->size);
68 bo->offset = v3d.next_offset;
69 v3d.next_offset += create->size;
70
71 create->offset = bo->offset;
72 create->handle = drm_shim_bo_get_handle(shim_fd, &bo->base);
73
74 drm_shim_bo_put(&bo->base);
75
76 return 0;
77 }
78
79 static int
80 v3d_ioctl_get_bo_offset(int fd, unsigned long request, void *arg)
81 {
82 struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
83 struct drm_v3d_get_bo_offset *args = arg;
84 struct shim_bo *bo = drm_shim_bo_lookup(shim_fd, args->handle);
85
86 args->offset = v3d_bo(bo)->offset;
87
88 drm_shim_bo_put(bo);
89
90 return 0;
91 }
92
93 static int
94 v3d_ioctl_mmap_bo(int fd, unsigned long request, void *arg)
95 {
96 struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
97 struct drm_v3d_mmap_bo *map = arg;
98 struct shim_bo *bo = drm_shim_bo_lookup(shim_fd, map->handle);
99
100 map->offset = drm_shim_bo_get_mmap_offset(shim_fd, bo);
101
102 drm_shim_bo_put(bo);
103
104 return 0;
105 }
106
107 static int
108 v3d_ioctl_get_param(int fd, unsigned long request, void *arg)
109 {
110 struct drm_v3d_get_param *gp = arg;
111 static const uint32_t v3d42_reg_map[] = {
112 [DRM_V3D_PARAM_V3D_UIFCFG] = 0x00000045,
113 [DRM_V3D_PARAM_V3D_HUB_IDENT1] = 0x000e1124,
114 [DRM_V3D_PARAM_V3D_HUB_IDENT2] = 0x00000100,
115 [DRM_V3D_PARAM_V3D_HUB_IDENT3] = 0x00000e00,
116 [DRM_V3D_PARAM_V3D_CORE0_IDENT0] = 0x04443356,
117 [DRM_V3D_PARAM_V3D_CORE0_IDENT1] = 0x81001422,
118 [DRM_V3D_PARAM_V3D_CORE0_IDENT2] = 0x40078121,
119 };
120
121 switch (gp->param) {
122 case DRM_V3D_PARAM_SUPPORTS_TFU:
123 gp->value = 1;
124 return 0;
125 default:
126 break;
127 }
128
129 if (gp->param < ARRAY_SIZE(v3d42_reg_map) && v3d42_reg_map[gp->param]) {
130 gp->value = v3d42_reg_map[gp->param];
131 return 0;
132 }
133
134 fprintf(stderr, "Unknown DRM_IOCTL_V3D_GET_PARAM %d\n", gp->param);
135 return -1;
136 }
137
138 static ioctl_fn_t driver_ioctls[] = {
139 [DRM_V3D_SUBMIT_CL] = v3d_ioctl_noop,
140 [DRM_V3D_SUBMIT_TFU] = v3d_ioctl_noop,
141 [DRM_V3D_WAIT_BO] = v3d_ioctl_noop,
142 [DRM_V3D_CREATE_BO] = v3d_ioctl_create_bo,
143 [DRM_V3D_GET_PARAM] = v3d_ioctl_get_param,
144 [DRM_V3D_GET_BO_OFFSET] = v3d_ioctl_get_bo_offset,
145 [DRM_V3D_MMAP_BO] = v3d_ioctl_mmap_bo,
146 };
147
148 void
149 drm_shim_driver_init(void)
150 {
151 shim_device.bus_type = DRM_BUS_PLATFORM;
152 shim_device.driver_name = "v3d";
153 shim_device.driver_ioctls = driver_ioctls;
154 shim_device.driver_ioctl_count = ARRAY_SIZE(driver_ioctls);
155
156 drm_shim_override_file("OF_FULLNAME=/rdb/v3d\n"
157 "OF_COMPATIBLE_N=1\n"
158 "OF_COMPATIBLE_0=brcm,7278-v3d\n",
159 "/sys/dev/char/%d:%d/device/uevent",
160 DRM_MAJOR, render_node_minor);
161 }