1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31#include <linux/debugfs.h>
32#include <nvif/class.h>
33#include <nvif/if0001.h>
34#include "nouveau_debugfs.h"
35#include "nouveau_drv.h"
36
37static int
38nouveau_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
49static int
50nouveau_debugfs_pstate_get(struct seq_file *m, void *data)
51{
52 struct drm_device *drm = m->private;
53 struct nouveau_debugfs *debugfs = nouveau_debugfs(drm);
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
118static ssize_t
119nouveau_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_device *drm = m->private;
124 struct nouveau_debugfs *debugfs = nouveau_debugfs(drm);
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 = pm_runtime_get_sync(drm->dev);
164 if (IS_ERR_VALUE(ret) && ret != -EACCES)
165 return ret;
166 ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER, &args, sizeof(args));
167 pm_runtime_put_autosuspend(drm->dev);
168 if (ret < 0)
169 return ret;
170
171 return len;
172}
173
174static int
175nouveau_debugfs_pstate_open(struct inode *inode, struct file *file)
176{
177 return single_open(file, nouveau_debugfs_pstate_get, inode->i_private);
178}
179
180static const struct file_operations nouveau_pstate_fops = {
181 .owner = THIS_MODULE,
182 .open = nouveau_debugfs_pstate_open,
183 .read = seq_read,
184 .write = nouveau_debugfs_pstate_set,
185};
186
187static struct drm_info_list nouveau_debugfs_list[] = {
188 { "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL },
189};
190#define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list)
191
192static const struct nouveau_debugfs_files {
193 const char *name;
194 const struct file_operations *fops;
195} nouveau_debugfs_files[] = {
196 {"pstate", &nouveau_pstate_fops},
197};
198
199int
200nouveau_drm_debugfs_init(struct drm_minor *minor)
201{
202 struct dentry *dentry;
203 int i;
204
205 for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) {
206 dentry = debugfs_create_file(nouveau_debugfs_files[i].name,
207 S_IRUGO | S_IWUSR,
208 minor->debugfs_root, minor->dev,
209 nouveau_debugfs_files[i].fops);
210 if (!dentry)
211 return -ENOMEM;
212 }
213
214 return drm_debugfs_create_files(nouveau_debugfs_list,
215 NOUVEAU_DEBUGFS_ENTRIES,
216 minor->debugfs_root, minor);
217}
218
219int
220nouveau_debugfs_init(struct nouveau_drm *drm)
221{
222 int ret;
223
224 drm->debugfs = kzalloc(sizeof(*drm->debugfs), GFP_KERNEL);
225 if (!drm->debugfs)
226 return -ENOMEM;
227
228 ret = nvif_object_init(&drm->client.device.object, 0,
229 NVIF_CLASS_CONTROL, NULL, 0,
230 &drm->debugfs->ctrl);
231 if (ret)
232 return ret;
233
234 return 0;
235}
236
237void
238nouveau_debugfs_fini(struct nouveau_drm *drm)
239{
240 if (drm->debugfs && drm->debugfs->ctrl.priv)
241 nvif_object_fini(&drm->debugfs->ctrl);
242
243 kfree(drm->debugfs);
244 drm->debugfs = NULL;
245}
246
