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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_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
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_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
170static int
171nouveau_debugfs_pstate_open(struct inode *inode, struct file *file)
172{
173 return single_open(file, nouveau_debugfs_pstate_get, inode->i_private);
174}
175
176static 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
183static 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
188static const struct nouveau_debugfs_files {
189 const char *name;
190 const struct file_operations *fops;
191} nouveau_debugfs_files[] = {
192 {"pstate", &nouveau_pstate_fops},
193};
194
195static int
196nouveau_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
220int
221nouveau_drm_debugfs_init(struct drm_minor *minor)
222{
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);
236}
237
238void
239nouveau_drm_debugfs_cleanup(struct drm_minor *minor)
240{
241 int i;
242
243 drm_debugfs_remove_files(nouveau_debugfs_list, NOUVEAU_DEBUGFS_ENTRIES,
244 minor);
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 }
251}
252
253int
254nouveau_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
270void
271nouveau_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}
279
