1 /**************************************************************************
2 *
3 * Copyright 2011 Intel Corporation
4 * Copyright 2012 Francisco Jerez
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
17 * of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 * Authors:
28 * Kristian Høgsberg <krh@bitplanet.net>
29 * Benjamin Franzke <benjaminfranzke@googlemail.com>
30 *
31 **************************************************************************/
32
33 #include <fcntl.h>
34 #include <stdio.h>
35 #include <xf86drm.h>
36 #include <unistd.h>
37
38 #include "loader.h"
39 #include "target-helpers/drm_helper_public.h"
40 #include "state_tracker/drm_driver.h"
41 #include "pipe_loader_priv.h"
42
43 #include "util/u_memory.h"
44 #include "util/u_dl.h"
45 #include "util/u_debug.h"
46
47 #define DRM_RENDER_NODE_DEV_NAME_FORMAT "%s/renderD%d"
48 #define DRM_RENDER_NODE_MAX_NODES 63
49 #define DRM_RENDER_NODE_MIN_MINOR 128
50 #define DRM_RENDER_NODE_MAX_MINOR (DRM_RENDER_NODE_MIN_MINOR + DRM_RENDER_NODE_MAX_NODES)
51
52 struct pipe_loader_drm_device {
53 struct pipe_loader_device base;
54 const struct drm_driver_descriptor *dd;
55 #ifndef GALLIUM_STATIC_TARGETS
56 struct util_dl_library *lib;
57 #endif
58 int fd;
59 };
60
61 #define pipe_loader_drm_device(dev) ((struct pipe_loader_drm_device *)dev)
62
63 static const struct pipe_loader_ops pipe_loader_drm_ops;
64
65 #ifdef GALLIUM_STATIC_TARGETS
66 static const struct drm_conf_ret throttle_ret = {
67 DRM_CONF_INT,
68 {2},
69 };
70
71 static const struct drm_conf_ret share_fd_ret = {
72 DRM_CONF_BOOL,
73 {true},
74 };
75
76 static inline const struct drm_conf_ret *
configuration_query(enum drm_conf conf)77 configuration_query(enum drm_conf conf)
78 {
79 switch (conf) {
80 case DRM_CONF_THROTTLE:
81 return &throttle_ret;
82 case DRM_CONF_SHARE_FD:
83 return &share_fd_ret;
84 default:
85 break;
86 }
87 return NULL;
88 }
89
90 static const struct drm_driver_descriptor driver_descriptors[] = {
91 {
92 .driver_name = "i915",
93 .create_screen = pipe_i915_create_screen,
94 .configuration = configuration_query,
95 },
96 #ifdef USE_VC4_SIMULATOR
97 /* VC4 simulator and ILO (i965) are mutually exclusive (error at
98 * configure). As the latter is unconditionally added, keep this one above
99 * it.
100 */
101 {
102 .driver_name = "i965",
103 .create_screen = pipe_vc4_create_screen,
104 .configuration = configuration_query,
105 },
106 #endif
107 {
108 .driver_name = "i965",
109 .create_screen = pipe_ilo_create_screen,
110 .configuration = configuration_query,
111 },
112 {
113 .driver_name = "nouveau",
114 .create_screen = pipe_nouveau_create_screen,
115 .configuration = configuration_query,
116 },
117 {
118 .driver_name = "r300",
119 .create_screen = pipe_r300_create_screen,
120 .configuration = configuration_query,
121 },
122 {
123 .driver_name = "r600",
124 .create_screen = pipe_r600_create_screen,
125 .configuration = configuration_query,
126 },
127 {
128 .driver_name = "radeonsi",
129 .create_screen = pipe_radeonsi_create_screen,
130 .configuration = configuration_query,
131 },
132 {
133 .driver_name = "vmwgfx",
134 .create_screen = pipe_vmwgfx_create_screen,
135 .configuration = configuration_query,
136 },
137 {
138 .driver_name = "kgsl",
139 .create_screen = pipe_freedreno_create_screen,
140 .configuration = configuration_query,
141 },
142 {
143 .driver_name = "msm",
144 .create_screen = pipe_freedreno_create_screen,
145 .configuration = configuration_query,
146 },
147 {
148 .driver_name = "virtio_gpu",
149 .create_screen = pipe_virgl_create_screen,
150 .configuration = configuration_query,
151 },
152 {
153 .driver_name = "vc4",
154 .create_screen = pipe_vc4_create_screen,
155 .configuration = configuration_query,
156 },
157 {
158 .driver_name = "etnaviv",
159 .create_screen = pipe_etna_create_screen,
160 .configuration = configuration_query,
161 },
162 {
163 .driver_name = "imx-drm",
164 .create_screen = pipe_imx_drm_create_screen,
165 .configuration = configuration_query,
166 }
167 };
168 #endif
169
170 bool
pipe_loader_drm_probe_fd(struct pipe_loader_device ** dev,int fd)171 pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
172 {
173 struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
174 int vendor_id, chip_id;
175
176 if (!ddev)
177 return false;
178
179 if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
180 ddev->base.type = PIPE_LOADER_DEVICE_PCI;
181 ddev->base.u.pci.vendor_id = vendor_id;
182 ddev->base.u.pci.chip_id = chip_id;
183 } else {
184 ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM;
185 }
186 ddev->base.ops = &pipe_loader_drm_ops;
187 ddev->fd = fd;
188
189 ddev->base.driver_name = loader_get_driver_for_fd(fd);
190 if (!ddev->base.driver_name)
191 goto fail;
192
193 #ifdef GALLIUM_STATIC_TARGETS
194 for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) {
195 if (strcmp(driver_descriptors[i].driver_name, ddev->base.driver_name) == 0) {
196 ddev->dd = &driver_descriptors[i];
197 break;
198 }
199 }
200 if (!ddev->dd)
201 goto fail;
202 #else
203 ddev->lib = pipe_loader_find_module(&ddev->base, PIPE_SEARCH_DIR);
204 if (!ddev->lib)
205 goto fail;
206
207 ddev->dd = (const struct drm_driver_descriptor *)
208 util_dl_get_proc_address(ddev->lib, "driver_descriptor");
209
210 /* sanity check on the driver name */
211 if (!ddev->dd || strcmp(ddev->dd->driver_name, ddev->base.driver_name) != 0)
212 goto fail;
213 #endif
214
215 *dev = &ddev->base;
216 return true;
217
218 fail:
219 #ifndef GALLIUM_STATIC_TARGETS
220 if (ddev->lib)
221 util_dl_close(ddev->lib);
222 #endif
223 FREE(ddev);
224 return false;
225 }
226
227 static int
open_drm_render_node_minor(int minor)228 open_drm_render_node_minor(int minor)
229 {
230 char path[PATH_MAX];
231 snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME,
232 minor);
233 return loader_open_device(path);
234 }
235
236 int
pipe_loader_drm_probe(struct pipe_loader_device ** devs,int ndev)237 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
238 {
239 int i, j, fd;
240
241 for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0;
242 i <= DRM_RENDER_NODE_MAX_MINOR; i++) {
243 struct pipe_loader_device *dev;
244
245 fd = open_drm_render_node_minor(i);
246 if (fd < 0)
247 continue;
248
249 if (!pipe_loader_drm_probe_fd(&dev, fd)) {
250 close(fd);
251 continue;
252 }
253
254 if (j < ndev) {
255 devs[j] = dev;
256 } else {
257 close(fd);
258 dev->ops->release(&dev);
259 }
260 j++;
261 }
262
263 return j;
264 }
265
266 static void
pipe_loader_drm_release(struct pipe_loader_device ** dev)267 pipe_loader_drm_release(struct pipe_loader_device **dev)
268 {
269 struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
270
271 #ifndef GALLIUM_STATIC_TARGETS
272 if (ddev->lib)
273 util_dl_close(ddev->lib);
274 #endif
275
276 close(ddev->fd);
277 FREE(ddev->base.driver_name);
278 FREE(ddev);
279 *dev = NULL;
280 }
281
282 static const struct drm_conf_ret *
pipe_loader_drm_configuration(struct pipe_loader_device * dev,enum drm_conf conf)283 pipe_loader_drm_configuration(struct pipe_loader_device *dev,
284 enum drm_conf conf)
285 {
286 struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
287
288 if (!ddev->dd->configuration)
289 return NULL;
290
291 return ddev->dd->configuration(conf);
292 }
293
294 static struct pipe_screen *
pipe_loader_drm_create_screen(struct pipe_loader_device * dev)295 pipe_loader_drm_create_screen(struct pipe_loader_device *dev)
296 {
297 struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
298
299 return ddev->dd->create_screen(ddev->fd);
300 }
301
302 static const struct pipe_loader_ops pipe_loader_drm_ops = {
303 .create_screen = pipe_loader_drm_create_screen,
304 .configuration = pipe_loader_drm_configuration,
305 .release = pipe_loader_drm_release
306 };
307