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 <string.h>
36 #include <xf86drm.h>
37 #include <unistd.h>
38 #include <fcntl.h>
39
40 #include "loader.h"
41 #include "target-helpers/drm_helper_public.h"
42 #include "frontend/drm_driver.h"
43 #include "pipe_loader_priv.h"
44
45 #include "util/os_file.h"
46 #include "util/u_memory.h"
47 #include "util/u_dl.h"
48 #include "util/u_debug.h"
49 #include "util/xmlconfig.h"
50
51 #define DRM_RENDER_NODE_DEV_NAME_FORMAT "%s/renderD%d"
52 #define DRM_RENDER_NODE_MAX_NODES 63
53 #define DRM_RENDER_NODE_MIN_MINOR 128
54 #define DRM_RENDER_NODE_MAX_MINOR (DRM_RENDER_NODE_MIN_MINOR + DRM_RENDER_NODE_MAX_NODES)
55
56 struct pipe_loader_drm_device {
57 struct pipe_loader_device base;
58 const struct drm_driver_descriptor *dd;
59 #ifndef GALLIUM_STATIC_TARGETS
60 struct util_dl_library *lib;
61 #endif
62 int fd;
63 };
64
65 #define pipe_loader_drm_device(dev) ((struct pipe_loader_drm_device *)dev)
66
67 static const struct pipe_loader_ops pipe_loader_drm_ops;
68
69 #ifdef GALLIUM_STATIC_TARGETS
70 static const struct drm_driver_descriptor *driver_descriptors[] = {
71 &i915_driver_descriptor,
72 &iris_driver_descriptor,
73 &crocus_driver_descriptor,
74 &nouveau_driver_descriptor,
75 &r300_driver_descriptor,
76 &r600_driver_descriptor,
77 &radeonsi_driver_descriptor,
78 &vmwgfx_driver_descriptor,
79 &kgsl_driver_descriptor,
80 &msm_driver_descriptor,
81 &virtio_gpu_driver_descriptor,
82 &v3d_driver_descriptor,
83 &vc4_driver_descriptor,
84 &panfrost_driver_descriptor,
85 &etnaviv_driver_descriptor,
86 &tegra_driver_descriptor,
87 &lima_driver_descriptor,
88 &zink_driver_descriptor,
89 };
90 #endif
91
92 static const struct drm_driver_descriptor *
get_driver_descriptor(const char * driver_name,struct util_dl_library ** plib)93 get_driver_descriptor(const char *driver_name, struct util_dl_library **plib)
94 {
95 #ifdef GALLIUM_STATIC_TARGETS
96 for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) {
97 if (strcmp(driver_descriptors[i]->driver_name, driver_name) == 0)
98 return driver_descriptors[i];
99 }
100 return &kmsro_driver_descriptor;
101 #else
102 const char *search_dir = getenv("GALLIUM_PIPE_SEARCH_DIR");
103 if (search_dir == NULL)
104 search_dir = PIPE_SEARCH_DIR;
105
106 *plib = pipe_loader_find_module(driver_name, search_dir);
107 if (!*plib)
108 return NULL;
109
110 const struct drm_driver_descriptor *dd =
111 (const struct drm_driver_descriptor *)
112 util_dl_get_proc_address(*plib, "driver_descriptor");
113
114 /* sanity check on the driver name */
115 if (dd && strcmp(dd->driver_name, driver_name) == 0)
116 return dd;
117 #endif
118
119 return NULL;
120 }
121
122 static bool
pipe_loader_drm_probe_fd_nodup(struct pipe_loader_device ** dev,int fd)123 pipe_loader_drm_probe_fd_nodup(struct pipe_loader_device **dev, int fd)
124 {
125 struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
126 int vendor_id, chip_id;
127
128 if (!ddev)
129 return false;
130
131 if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
132 ddev->base.type = PIPE_LOADER_DEVICE_PCI;
133 ddev->base.u.pci.vendor_id = vendor_id;
134 ddev->base.u.pci.chip_id = chip_id;
135 } else {
136 ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM;
137 }
138 ddev->base.ops = &pipe_loader_drm_ops;
139 ddev->fd = fd;
140
141 ddev->base.driver_name = loader_get_driver_for_fd(fd);
142 if (!ddev->base.driver_name)
143 goto fail;
144
145 /* For the closed source AMD OpenGL driver, we want libgbm to load
146 * "amdgpu_dri.so", but we want Gallium multimedia drivers to load
147 * "radeonsi". So change amdgpu to radeonsi for Gallium.
148 */
149 if (strcmp(ddev->base.driver_name, "amdgpu") == 0) {
150 FREE(ddev->base.driver_name);
151 ddev->base.driver_name = strdup("radeonsi");
152 }
153
154 struct util_dl_library **plib = NULL;
155 #ifndef GALLIUM_STATIC_TARGETS
156 plib = &ddev->lib;
157 #endif
158 ddev->dd = get_driver_descriptor(ddev->base.driver_name, plib);
159
160 /* vgem is a virtual device; don't try using it with kmsro */
161 if (strcmp(ddev->base.driver_name, "vgem") == 0)
162 goto fail;
163
164 /* kmsro supports lots of drivers, try as a fallback */
165 if (!ddev->dd)
166 ddev->dd = get_driver_descriptor("kmsro", plib);
167
168 if (!ddev->dd)
169 goto fail;
170
171 *dev = &ddev->base;
172 return true;
173
174 fail:
175 #ifndef GALLIUM_STATIC_TARGETS
176 if (ddev->lib)
177 util_dl_close(ddev->lib);
178 #endif
179 FREE(ddev->base.driver_name);
180 FREE(ddev);
181 return false;
182 }
183
184 bool
pipe_loader_drm_probe_fd(struct pipe_loader_device ** dev,int fd)185 pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
186 {
187 bool ret;
188 int new_fd;
189
190 if (fd < 0 || (new_fd = os_dupfd_cloexec(fd)) < 0)
191 return false;
192
193 ret = pipe_loader_drm_probe_fd_nodup(dev, new_fd);
194 if (!ret)
195 close(new_fd);
196
197 return ret;
198 }
199
200 static int
open_drm_render_node_minor(int minor)201 open_drm_render_node_minor(int minor)
202 {
203 char path[PATH_MAX];
204 snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME,
205 minor);
206 return loader_open_device(path);
207 }
208
209 int
pipe_loader_drm_probe(struct pipe_loader_device ** devs,int ndev)210 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
211 {
212 int i, j, fd;
213
214 for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0;
215 i <= DRM_RENDER_NODE_MAX_MINOR; i++) {
216 struct pipe_loader_device *dev;
217
218 fd = open_drm_render_node_minor(i);
219 if (fd < 0)
220 continue;
221
222 if (!pipe_loader_drm_probe_fd_nodup(&dev, fd)) {
223 close(fd);
224 continue;
225 }
226
227 if (j < ndev) {
228 devs[j] = dev;
229 } else {
230 close(fd);
231 dev->ops->release(&dev);
232 }
233 j++;
234 }
235
236 return j;
237 }
238
239 static void
pipe_loader_drm_release(struct pipe_loader_device ** dev)240 pipe_loader_drm_release(struct pipe_loader_device **dev)
241 {
242 struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
243
244 #ifndef GALLIUM_STATIC_TARGETS
245 if (ddev->lib)
246 util_dl_close(ddev->lib);
247 #endif
248
249 close(ddev->fd);
250 FREE(ddev->base.driver_name);
251 pipe_loader_base_release(dev);
252 }
253
254 static const struct driOptionDescription *
pipe_loader_drm_get_driconf(struct pipe_loader_device * dev,unsigned * count)255 pipe_loader_drm_get_driconf(struct pipe_loader_device *dev, unsigned *count)
256 {
257 struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
258
259 *count = ddev->dd->driconf_count;
260 return ddev->dd->driconf;
261 }
262
263 static struct pipe_screen *
pipe_loader_drm_create_screen(struct pipe_loader_device * dev,const struct pipe_screen_config * config,bool sw_vk)264 pipe_loader_drm_create_screen(struct pipe_loader_device *dev,
265 const struct pipe_screen_config *config, bool sw_vk)
266 {
267 struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
268
269 return ddev->dd->create_screen(ddev->fd, config);
270 }
271
272 const struct driOptionDescription *
pipe_loader_drm_get_driconf_by_name(const char * driver_name,unsigned * count)273 pipe_loader_drm_get_driconf_by_name(const char *driver_name, unsigned *count)
274 {
275 driOptionDescription *driconf = NULL;
276 struct util_dl_library *lib = NULL;
277 const struct drm_driver_descriptor *dd =
278 get_driver_descriptor(driver_name, &lib);
279
280 if (!dd) {
281 *count = 0;
282 } else {
283 *count = dd->driconf_count;
284 size_t size = sizeof(*driconf) * *count;
285 driconf = malloc(size);
286 memcpy(driconf, dd->driconf, size);
287 }
288 if (lib)
289 util_dl_close(lib);
290
291 return driconf;
292 }
293
294 static const struct pipe_loader_ops pipe_loader_drm_ops = {
295 .create_screen = pipe_loader_drm_create_screen,
296 .get_driconf = pipe_loader_drm_get_driconf,
297 .release = pipe_loader_drm_release
298 };
299