diff options
Diffstat (limited to 'include/os/linux/ioctl.c')
-rw-r--r-- | include/os/linux/ioctl.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/include/os/linux/ioctl.c b/include/os/linux/ioctl.c new file mode 100644 index 0000000..a40df2a --- /dev/null +++ b/include/os/linux/ioctl.c | |||
@@ -0,0 +1,297 @@ | |||
1 | /* | ||
2 | * NVGPU IOCTLs | ||
3 | * | ||
4 | * Copyright (c) 2011-2018, NVIDIA CORPORATION. All rights reserved. | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify it | ||
7 | * under the terms and conditions of the GNU General Public License, | ||
8 | * version 2, as published by the Free Software Foundation. | ||
9 | * | ||
10 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
13 | * more details. | ||
14 | * | ||
15 | * You should have received a copy of the GNU General Public License | ||
16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | */ | ||
18 | |||
19 | #include <linux/file.h> | ||
20 | |||
21 | #include <nvgpu/nvgpu_common.h> | ||
22 | #include <nvgpu/ctxsw_trace.h> | ||
23 | #include <nvgpu/gk20a.h> | ||
24 | |||
25 | #include "gk20a/dbg_gpu_gk20a.h" | ||
26 | |||
27 | #include "ioctl_channel.h" | ||
28 | #include "ioctl_ctrl.h" | ||
29 | #include "ioctl_as.h" | ||
30 | #include "ioctl_tsg.h" | ||
31 | #include "ioctl_dbg.h" | ||
32 | #include "module.h" | ||
33 | #include "os_linux.h" | ||
34 | #include "ctxsw_trace.h" | ||
35 | #include "platform_gk20a.h" | ||
36 | |||
37 | #define GK20A_NUM_CDEVS 7 | ||
38 | |||
39 | const struct file_operations gk20a_channel_ops = { | ||
40 | .owner = THIS_MODULE, | ||
41 | .release = gk20a_channel_release, | ||
42 | .open = gk20a_channel_open, | ||
43 | #ifdef CONFIG_COMPAT | ||
44 | .compat_ioctl = gk20a_channel_ioctl, | ||
45 | #endif | ||
46 | .unlocked_ioctl = gk20a_channel_ioctl, | ||
47 | }; | ||
48 | |||
49 | static const struct file_operations gk20a_ctrl_ops = { | ||
50 | .owner = THIS_MODULE, | ||
51 | .release = gk20a_ctrl_dev_release, | ||
52 | .open = gk20a_ctrl_dev_open, | ||
53 | .unlocked_ioctl = gk20a_ctrl_dev_ioctl, | ||
54 | #ifdef CONFIG_COMPAT | ||
55 | .compat_ioctl = gk20a_ctrl_dev_ioctl, | ||
56 | #endif | ||
57 | .mmap = gk20a_ctrl_dev_mmap, | ||
58 | }; | ||
59 | |||
60 | static const struct file_operations gk20a_dbg_ops = { | ||
61 | .owner = THIS_MODULE, | ||
62 | .release = gk20a_dbg_gpu_dev_release, | ||
63 | .open = gk20a_dbg_gpu_dev_open, | ||
64 | .unlocked_ioctl = gk20a_dbg_gpu_dev_ioctl, | ||
65 | .poll = gk20a_dbg_gpu_dev_poll, | ||
66 | #ifdef CONFIG_COMPAT | ||
67 | .compat_ioctl = gk20a_dbg_gpu_dev_ioctl, | ||
68 | #endif | ||
69 | }; | ||
70 | |||
71 | static const struct file_operations gk20a_as_ops = { | ||
72 | .owner = THIS_MODULE, | ||
73 | .release = gk20a_as_dev_release, | ||
74 | .open = gk20a_as_dev_open, | ||
75 | #ifdef CONFIG_COMPAT | ||
76 | .compat_ioctl = gk20a_as_dev_ioctl, | ||
77 | #endif | ||
78 | .unlocked_ioctl = gk20a_as_dev_ioctl, | ||
79 | }; | ||
80 | |||
81 | /* | ||
82 | * Note: We use a different 'open' to trigger handling of the profiler session. | ||
83 | * Most of the code is shared between them... Though, at some point if the | ||
84 | * code does get too tangled trying to handle each in the same path we can | ||
85 | * separate them cleanly. | ||
86 | */ | ||
87 | static const struct file_operations gk20a_prof_ops = { | ||
88 | .owner = THIS_MODULE, | ||
89 | .release = gk20a_dbg_gpu_dev_release, | ||
90 | .open = gk20a_prof_gpu_dev_open, | ||
91 | .unlocked_ioctl = gk20a_dbg_gpu_dev_ioctl, | ||
92 | #ifdef CONFIG_COMPAT | ||
93 | .compat_ioctl = gk20a_dbg_gpu_dev_ioctl, | ||
94 | #endif | ||
95 | }; | ||
96 | |||
97 | static const struct file_operations gk20a_tsg_ops = { | ||
98 | .owner = THIS_MODULE, | ||
99 | .release = nvgpu_ioctl_tsg_dev_release, | ||
100 | .open = nvgpu_ioctl_tsg_dev_open, | ||
101 | #ifdef CONFIG_COMPAT | ||
102 | .compat_ioctl = nvgpu_ioctl_tsg_dev_ioctl, | ||
103 | #endif | ||
104 | .unlocked_ioctl = nvgpu_ioctl_tsg_dev_ioctl, | ||
105 | }; | ||
106 | |||
107 | #ifdef CONFIG_GK20A_CTXSW_TRACE | ||
108 | static const struct file_operations gk20a_ctxsw_ops = { | ||
109 | .owner = THIS_MODULE, | ||
110 | .release = gk20a_ctxsw_dev_release, | ||
111 | .open = gk20a_ctxsw_dev_open, | ||
112 | #ifdef CONFIG_COMPAT | ||
113 | .compat_ioctl = gk20a_ctxsw_dev_ioctl, | ||
114 | #endif | ||
115 | .unlocked_ioctl = gk20a_ctxsw_dev_ioctl, | ||
116 | .poll = gk20a_ctxsw_dev_poll, | ||
117 | .read = gk20a_ctxsw_dev_read, | ||
118 | .mmap = gk20a_ctxsw_dev_mmap, | ||
119 | }; | ||
120 | #endif | ||
121 | |||
122 | static const struct file_operations gk20a_sched_ops = { | ||
123 | .owner = THIS_MODULE, | ||
124 | .release = gk20a_sched_dev_release, | ||
125 | .open = gk20a_sched_dev_open, | ||
126 | #ifdef CONFIG_COMPAT | ||
127 | .compat_ioctl = gk20a_sched_dev_ioctl, | ||
128 | #endif | ||
129 | .unlocked_ioctl = gk20a_sched_dev_ioctl, | ||
130 | .poll = gk20a_sched_dev_poll, | ||
131 | .read = gk20a_sched_dev_read, | ||
132 | }; | ||
133 | |||
134 | static int gk20a_create_device( | ||
135 | struct device *dev, int devno, | ||
136 | const char *interface_name, const char *cdev_name, | ||
137 | struct cdev *cdev, struct device **out, | ||
138 | const struct file_operations *ops, | ||
139 | struct class *class) | ||
140 | { | ||
141 | struct device *subdev; | ||
142 | int err; | ||
143 | struct gk20a *g = gk20a_from_dev(dev); | ||
144 | |||
145 | nvgpu_log_fn(g, " "); | ||
146 | |||
147 | cdev_init(cdev, ops); | ||
148 | cdev->owner = THIS_MODULE; | ||
149 | |||
150 | err = cdev_add(cdev, devno, 1); | ||
151 | if (err) { | ||
152 | dev_err(dev, "failed to add %s cdev\n", cdev_name); | ||
153 | return err; | ||
154 | } | ||
155 | |||
156 | subdev = device_create(class, NULL, devno, NULL, | ||
157 | interface_name, cdev_name); | ||
158 | |||
159 | if (IS_ERR(subdev)) { | ||
160 | err = PTR_ERR(dev); | ||
161 | cdev_del(cdev); | ||
162 | dev_err(dev, "failed to create %s device for %s\n", | ||
163 | cdev_name, dev_name(dev)); | ||
164 | return err; | ||
165 | } | ||
166 | |||
167 | *out = subdev; | ||
168 | return 0; | ||
169 | } | ||
170 | |||
171 | void gk20a_user_deinit(struct device *dev, struct class *class) | ||
172 | { | ||
173 | struct gk20a *g = gk20a_from_dev(dev); | ||
174 | struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); | ||
175 | |||
176 | if (l->channel.node) { | ||
177 | device_destroy(class, l->channel.cdev.dev); | ||
178 | cdev_del(&l->channel.cdev); | ||
179 | } | ||
180 | |||
181 | if (l->as_dev.node) { | ||
182 | device_destroy(class, l->as_dev.cdev.dev); | ||
183 | cdev_del(&l->as_dev.cdev); | ||
184 | } | ||
185 | |||
186 | if (l->ctrl.node) { | ||
187 | device_destroy(class, l->ctrl.cdev.dev); | ||
188 | cdev_del(&l->ctrl.cdev); | ||
189 | } | ||
190 | |||
191 | if (l->dbg.node) { | ||
192 | device_destroy(class, l->dbg.cdev.dev); | ||
193 | cdev_del(&l->dbg.cdev); | ||
194 | } | ||
195 | |||
196 | if (l->prof.node) { | ||
197 | device_destroy(class, l->prof.cdev.dev); | ||
198 | cdev_del(&l->prof.cdev); | ||
199 | } | ||
200 | |||
201 | if (l->tsg.node) { | ||
202 | device_destroy(class, l->tsg.cdev.dev); | ||
203 | cdev_del(&l->tsg.cdev); | ||
204 | } | ||
205 | |||
206 | if (l->ctxsw.node) { | ||
207 | device_destroy(class, l->ctxsw.cdev.dev); | ||
208 | cdev_del(&l->ctxsw.cdev); | ||
209 | } | ||
210 | |||
211 | if (l->sched.node) { | ||
212 | device_destroy(class, l->sched.cdev.dev); | ||
213 | cdev_del(&l->sched.cdev); | ||
214 | } | ||
215 | |||
216 | if (l->cdev_region) | ||
217 | unregister_chrdev_region(l->cdev_region, GK20A_NUM_CDEVS); | ||
218 | } | ||
219 | |||
220 | int gk20a_user_init(struct device *dev, const char *interface_name, | ||
221 | struct class *class) | ||
222 | { | ||
223 | int err; | ||
224 | dev_t devno; | ||
225 | struct gk20a *g = gk20a_from_dev(dev); | ||
226 | struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); | ||
227 | |||
228 | err = alloc_chrdev_region(&devno, 0, GK20A_NUM_CDEVS, dev_name(dev)); | ||
229 | if (err) { | ||
230 | dev_err(dev, "failed to allocate devno\n"); | ||
231 | goto fail; | ||
232 | } | ||
233 | l->cdev_region = devno; | ||
234 | |||
235 | err = gk20a_create_device(dev, devno++, interface_name, "", | ||
236 | &l->channel.cdev, &l->channel.node, | ||
237 | &gk20a_channel_ops, | ||
238 | class); | ||
239 | if (err) | ||
240 | goto fail; | ||
241 | |||
242 | err = gk20a_create_device(dev, devno++, interface_name, "-as", | ||
243 | &l->as_dev.cdev, &l->as_dev.node, | ||
244 | &gk20a_as_ops, | ||
245 | class); | ||
246 | if (err) | ||
247 | goto fail; | ||
248 | |||
249 | err = gk20a_create_device(dev, devno++, interface_name, "-ctrl", | ||
250 | &l->ctrl.cdev, &l->ctrl.node, | ||
251 | &gk20a_ctrl_ops, | ||
252 | class); | ||
253 | if (err) | ||
254 | goto fail; | ||
255 | |||
256 | err = gk20a_create_device(dev, devno++, interface_name, "-dbg", | ||
257 | &l->dbg.cdev, &l->dbg.node, | ||
258 | &gk20a_dbg_ops, | ||
259 | class); | ||
260 | if (err) | ||
261 | goto fail; | ||
262 | |||
263 | err = gk20a_create_device(dev, devno++, interface_name, "-prof", | ||
264 | &l->prof.cdev, &l->prof.node, | ||
265 | &gk20a_prof_ops, | ||
266 | class); | ||
267 | if (err) | ||
268 | goto fail; | ||
269 | |||
270 | err = gk20a_create_device(dev, devno++, interface_name, "-tsg", | ||
271 | &l->tsg.cdev, &l->tsg.node, | ||
272 | &gk20a_tsg_ops, | ||
273 | class); | ||
274 | if (err) | ||
275 | goto fail; | ||
276 | |||
277 | #if defined(CONFIG_GK20A_CTXSW_TRACE) | ||
278 | err = gk20a_create_device(dev, devno++, interface_name, "-ctxsw", | ||
279 | &l->ctxsw.cdev, &l->ctxsw.node, | ||
280 | &gk20a_ctxsw_ops, | ||
281 | class); | ||
282 | if (err) | ||
283 | goto fail; | ||
284 | #endif | ||
285 | |||
286 | err = gk20a_create_device(dev, devno++, interface_name, "-sched", | ||
287 | &l->sched.cdev, &l->sched.node, | ||
288 | &gk20a_sched_ops, | ||
289 | class); | ||
290 | if (err) | ||
291 | goto fail; | ||
292 | |||
293 | return 0; | ||
294 | fail: | ||
295 | gk20a_user_deinit(dev, &nvgpu_class); | ||
296 | return err; | ||
297 | } | ||