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33b903e8 MS |
1 | /* |
2 | * Copyright (C) 2009 Red Hat <bskeggs@redhat.com> | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining | |
5 | * a copy of this software and associated documentation files (the | |
6 | * "Software"), to deal in the Software without restriction, including | |
7 | * without limitation the rights to use, copy, modify, merge, publish, | |
8 | * distribute, sublicense, and/or sell copies of the Software, and to | |
9 | * permit persons to whom the Software is furnished to do so, subject to | |
10 | * the following conditions: | |
11 | * | |
12 | * The above copyright notice and this permission notice (including the | |
13 | * next paragraph) shall be included in all copies or substantial | |
14 | * portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
17 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
19 | * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE | |
20 | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | |
21 | * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
22 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
23 | * | |
24 | */ | |
25 | ||
26 | /* | |
27 | * Authors: | |
28 | * Ben Skeggs <bskeggs@redhat.com> | |
29 | */ | |
30 | ||
1b7ab1a1 | 31 | #include <linux/debugfs.h> |
b126a200 | 32 | #include <nvif/class.h> |
6e9fc177 | 33 | #include <nvif/if0001.h> |
33b903e8 | 34 | #include "nouveau_debugfs.h" |
4dc28134 | 35 | #include "nouveau_drv.h" |
33b903e8 MS |
36 | |
37 | static int | |
38 | nouveau_debugfs_vbios_image(struct seq_file *m, void *data) | |
39 | { | |
40 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
41 | struct nouveau_drm *drm = nouveau_drm(node->minor->dev); | |
42 | int i; | |
43 | ||
44 | for (i = 0; i < drm->vbios.length; i++) | |
45 | seq_printf(m, "%c", drm->vbios.data[i]); | |
46 | return 0; | |
47 | } | |
48 | ||
6e9fc177 KH |
49 | static int |
50 | nouveau_debugfs_pstate_get(struct seq_file *m, void *data) | |
51 | { | |
52 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
53 | struct nouveau_debugfs *debugfs = nouveau_debugfs(node->minor->dev); | |
54 | struct nvif_object *ctrl = &debugfs->ctrl; | |
55 | struct nvif_control_pstate_info_v0 info = {}; | |
56 | int ret, i; | |
57 | ||
58 | if (!debugfs) | |
59 | return -ENODEV; | |
60 | ||
61 | ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_INFO, &info, sizeof(info)); | |
62 | if (ret) | |
63 | return ret; | |
64 | ||
65 | for (i = 0; i < info.count + 1; i++) { | |
66 | const s32 state = i < info.count ? i : | |
67 | NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT; | |
68 | struct nvif_control_pstate_attr_v0 attr = { | |
69 | .state = state, | |
70 | .index = 0, | |
71 | }; | |
72 | ||
73 | ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR, | |
74 | &attr, sizeof(attr)); | |
75 | if (ret) | |
76 | return ret; | |
77 | ||
78 | if (i < info.count) | |
79 | seq_printf(m, "%02x:", attr.state); | |
80 | else | |
81 | seq_printf(m, "%s:", info.pwrsrc == 0 ? "DC" : | |
82 | info.pwrsrc == 1 ? "AC" : "--"); | |
83 | ||
84 | attr.index = 0; | |
85 | do { | |
86 | attr.state = state; | |
87 | ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR, | |
88 | &attr, sizeof(attr)); | |
89 | if (ret) | |
90 | return ret; | |
91 | ||
92 | seq_printf(m, " %s %d", attr.name, attr.min); | |
93 | if (attr.min != attr.max) | |
94 | seq_printf(m, "-%d", attr.max); | |
95 | seq_printf(m, " %s", attr.unit); | |
96 | } while (attr.index); | |
97 | ||
98 | if (state >= 0) { | |
99 | if (info.ustate_ac == state) | |
100 | seq_printf(m, " AC"); | |
101 | if (info.ustate_dc == state) | |
102 | seq_printf(m, " DC"); | |
103 | if (info.pstate == state) | |
104 | seq_printf(m, " *"); | |
105 | } else { | |
106 | if (info.ustate_ac < -1) | |
107 | seq_printf(m, " AC"); | |
108 | if (info.ustate_dc < -1) | |
109 | seq_printf(m, " DC"); | |
110 | } | |
111 | ||
112 | seq_printf(m, "\n"); | |
113 | } | |
114 | ||
115 | return 0; | |
116 | } | |
117 | ||
118 | static ssize_t | |
119 | nouveau_debugfs_pstate_set(struct file *file, const char __user *ubuf, | |
120 | size_t len, loff_t *offp) | |
121 | { | |
122 | struct seq_file *m = file->private_data; | |
123 | struct drm_info_node *node = (struct drm_info_node *) m->private; | |
124 | struct nouveau_debugfs *debugfs = nouveau_debugfs(node->minor->dev); | |
125 | struct nvif_object *ctrl = &debugfs->ctrl; | |
126 | struct nvif_control_pstate_user_v0 args = { .pwrsrc = -EINVAL }; | |
127 | char buf[32] = {}, *tmp, *cur = buf; | |
128 | long value, ret; | |
129 | ||
130 | if (!debugfs) | |
131 | return -ENODEV; | |
132 | ||
133 | if (len >= sizeof(buf)) | |
134 | return -EINVAL; | |
135 | ||
136 | if (copy_from_user(buf, ubuf, len)) | |
137 | return -EFAULT; | |
138 | ||
139 | if ((tmp = strchr(buf, '\n'))) | |
140 | *tmp = '\0'; | |
141 | ||
142 | if (!strncasecmp(cur, "dc:", 3)) { | |
143 | args.pwrsrc = 0; | |
144 | cur += 3; | |
145 | } else | |
146 | if (!strncasecmp(cur, "ac:", 3)) { | |
147 | args.pwrsrc = 1; | |
148 | cur += 3; | |
149 | } | |
150 | ||
151 | if (!strcasecmp(cur, "none")) | |
152 | args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_UNKNOWN; | |
153 | else | |
154 | if (!strcasecmp(cur, "auto")) | |
155 | args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_PERFMON; | |
156 | else { | |
157 | ret = kstrtol(cur, 16, &value); | |
158 | if (ret) | |
159 | return ret; | |
160 | args.ustate = value; | |
161 | } | |
162 | ||
163 | ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER, &args, sizeof(args)); | |
164 | if (ret < 0) | |
165 | return ret; | |
166 | ||
167 | return len; | |
168 | } | |
169 | ||
170 | static int | |
171 | nouveau_debugfs_pstate_open(struct inode *inode, struct file *file) | |
172 | { | |
173 | return single_open(file, nouveau_debugfs_pstate_get, inode->i_private); | |
174 | } | |
175 | ||
176 | static const struct file_operations nouveau_pstate_fops = { | |
177 | .owner = THIS_MODULE, | |
178 | .open = nouveau_debugfs_pstate_open, | |
179 | .read = seq_read, | |
180 | .write = nouveau_debugfs_pstate_set, | |
181 | }; | |
182 | ||
33b903e8 MS |
183 | static struct drm_info_list nouveau_debugfs_list[] = { |
184 | { "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL }, | |
185 | }; | |
186 | #define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list) | |
187 | ||
1b7ab1a1 KH |
188 | static const struct nouveau_debugfs_files { |
189 | const char *name; | |
190 | const struct file_operations *fops; | |
6e9fc177 KH |
191 | } nouveau_debugfs_files[] = { |
192 | {"pstate", &nouveau_pstate_fops}, | |
193 | }; | |
1b7ab1a1 KH |
194 | |
195 | static int | |
196 | nouveau_debugfs_create_file(struct drm_minor *minor, | |
197 | const struct nouveau_debugfs_files *ndf) | |
198 | { | |
199 | struct drm_info_node *node; | |
200 | ||
201 | node = kmalloc(sizeof(*node), GFP_KERNEL); | |
202 | if (node == NULL) | |
203 | return -ENOMEM; | |
204 | ||
205 | node->minor = minor; | |
206 | node->info_ent = (const void *)ndf->fops; | |
207 | node->dent = debugfs_create_file(ndf->name, S_IRUGO | S_IWUSR, | |
208 | minor->debugfs_root, node, ndf->fops); | |
209 | if (!node->dent) { | |
210 | kfree(node); | |
211 | return -ENOMEM; | |
212 | } | |
213 | ||
214 | mutex_lock(&minor->debugfs_lock); | |
215 | list_add(&node->list, &minor->debugfs_list); | |
216 | mutex_unlock(&minor->debugfs_lock); | |
217 | return 0; | |
218 | } | |
219 | ||
33b903e8 | 220 | int |
56c101af | 221 | nouveau_drm_debugfs_init(struct drm_minor *minor) |
33b903e8 | 222 | { |
1b7ab1a1 KH |
223 | int i, ret; |
224 | ||
225 | for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) { | |
226 | ret = nouveau_debugfs_create_file(minor, | |
227 | &nouveau_debugfs_files[i]); | |
228 | ||
229 | if (ret) | |
230 | return ret; | |
231 | } | |
232 | ||
233 | return drm_debugfs_create_files(nouveau_debugfs_list, | |
234 | NOUVEAU_DEBUGFS_ENTRIES, | |
235 | minor->debugfs_root, minor); | |
33b903e8 MS |
236 | } |
237 | ||
238 | void | |
56c101af | 239 | nouveau_drm_debugfs_cleanup(struct drm_minor *minor) |
33b903e8 | 240 | { |
1b7ab1a1 KH |
241 | int i; |
242 | ||
33b903e8 MS |
243 | drm_debugfs_remove_files(nouveau_debugfs_list, NOUVEAU_DEBUGFS_ENTRIES, |
244 | minor); | |
1b7ab1a1 KH |
245 | |
246 | for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) { | |
247 | drm_debugfs_remove_files((struct drm_info_list *) | |
248 | nouveau_debugfs_files[i].fops, | |
249 | 1, minor); | |
250 | } | |
33b903e8 | 251 | } |
b126a200 KH |
252 | |
253 | int | |
254 | nouveau_debugfs_init(struct nouveau_drm *drm) | |
255 | { | |
256 | int ret; | |
257 | ||
258 | drm->debugfs = kzalloc(sizeof(*drm->debugfs), GFP_KERNEL); | |
259 | if (!drm->debugfs) | |
260 | return -ENOMEM; | |
261 | ||
262 | ret = nvif_object_init(&drm->device.object, 0, NVIF_CLASS_CONTROL, | |
263 | NULL, 0, &drm->debugfs->ctrl); | |
264 | if (ret) | |
265 | return ret; | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
270 | void | |
271 | nouveau_debugfs_fini(struct nouveau_drm *drm) | |
272 | { | |
273 | if (drm->debugfs && drm->debugfs->ctrl.priv) | |
274 | nvif_object_fini(&drm->debugfs->ctrl); | |
275 | ||
276 | kfree(drm->debugfs); | |
277 | drm->debugfs = NULL; | |
278 | } |