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330c5988 BS |
1 | /* |
2 | * Copyright 2010 Red Hat Inc. | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice shall be included in | |
12 | * all copies or substantial portions of the Software. | |
13 | * | |
14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
20 | * OTHER DEALINGS IN THE SOFTWARE. | |
21 | * | |
22 | * Authors: Ben Skeggs | |
23 | */ | |
24 | ||
25 | #include "drmP.h" | |
26 | ||
27 | #include "nouveau_drv.h" | |
28 | #include "nouveau_pm.h" | |
29 | ||
30 | static int | |
31 | nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl) | |
32 | { | |
33 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
34 | struct nouveau_pm_engine *pm = &dev_priv->engine.pm; | |
35 | int ret; | |
36 | ||
37 | if (!pm->clock_get) | |
38 | return -EINVAL; | |
39 | ||
40 | memset(perflvl, 0, sizeof(*perflvl)); | |
41 | ||
42 | ret = pm->clock_get(dev, PLL_CORE); | |
43 | if (ret > 0) | |
44 | perflvl->core = ret; | |
45 | ||
46 | ret = pm->clock_get(dev, PLL_MEMORY); | |
47 | if (ret > 0) | |
48 | perflvl->memory = ret; | |
49 | ||
50 | ret = pm->clock_get(dev, PLL_SHADER); | |
51 | if (ret > 0) | |
52 | perflvl->shader = ret; | |
53 | ||
54 | ret = pm->clock_get(dev, PLL_UNK05); | |
55 | if (ret > 0) | |
56 | perflvl->unk05 = ret; | |
57 | ||
58 | if (pm->voltage.supported && pm->voltage_get) { | |
59 | ret = pm->voltage_get(dev); | |
60 | if (ret > 0) | |
61 | perflvl->voltage = ret; | |
62 | } | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
67 | static void | |
68 | nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len) | |
69 | { | |
70 | char s[16], v[16], f[16]; | |
71 | ||
72 | s[0] = '\0'; | |
73 | if (perflvl->shader) | |
74 | snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000); | |
75 | ||
76 | v[0] = '\0'; | |
77 | if (perflvl->voltage) | |
78 | snprintf(v, sizeof(v), " voltage %dmV", perflvl->voltage * 10); | |
79 | ||
80 | f[0] = '\0'; | |
81 | if (perflvl->fanspeed) | |
82 | snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed); | |
83 | ||
84 | snprintf(ptr, len, "core %dMHz memory %dMHz%s%s%s\n", | |
85 | perflvl->core / 1000, perflvl->memory / 1000, s, v, f); | |
86 | } | |
87 | ||
88 | static ssize_t | |
89 | nouveau_pm_get_perflvl_info(struct device *d, | |
90 | struct device_attribute *a, char *buf) | |
91 | { | |
92 | struct nouveau_pm_level *perflvl = (struct nouveau_pm_level *)a; | |
93 | char *ptr = buf; | |
94 | int len = PAGE_SIZE; | |
95 | ||
96 | snprintf(ptr, len, "%d: ", perflvl->id); | |
97 | ptr += strlen(buf); | |
98 | len -= strlen(buf); | |
99 | ||
100 | nouveau_pm_perflvl_info(perflvl, ptr, len); | |
101 | return strlen(buf); | |
102 | } | |
103 | ||
104 | static ssize_t | |
105 | nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf) | |
106 | { | |
107 | struct drm_device *dev = pci_get_drvdata(to_pci_dev(d)); | |
108 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
109 | struct nouveau_pm_engine *pm = &dev_priv->engine.pm; | |
110 | struct nouveau_pm_level cur; | |
111 | int len = PAGE_SIZE, ret; | |
112 | char *ptr = buf; | |
113 | ||
114 | if (!pm->cur) | |
115 | snprintf(ptr, len, "setting: boot\n"); | |
116 | else if (pm->cur == &pm->boot) | |
117 | snprintf(ptr, len, "setting: boot\nc: "); | |
118 | else | |
119 | snprintf(ptr, len, "setting: static %d\nc: ", pm->cur->id); | |
120 | ptr += strlen(buf); | |
121 | len -= strlen(buf); | |
122 | ||
123 | ret = nouveau_pm_perflvl_get(dev, &cur); | |
124 | if (ret == 0) | |
125 | nouveau_pm_perflvl_info(&cur, ptr, len); | |
126 | return strlen(buf); | |
127 | } | |
128 | ||
129 | static ssize_t | |
130 | nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a, | |
131 | const char *buf, size_t count) | |
132 | { | |
133 | return -EPERM; | |
134 | } | |
135 | ||
136 | DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR, | |
137 | nouveau_pm_get_perflvl, nouveau_pm_set_perflvl); | |
138 | ||
139 | int | |
140 | nouveau_pm_init(struct drm_device *dev) | |
141 | { | |
142 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
143 | struct nouveau_pm_engine *pm = &dev_priv->engine.pm; | |
144 | struct device *d = &dev->pdev->dev; | |
145 | char info[256]; | |
146 | int ret, i; | |
147 | ||
148 | nouveau_volt_init(dev); | |
149 | nouveau_perf_init(dev); | |
150 | ||
151 | NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl); | |
152 | for (i = 0; i < pm->nr_perflvl; i++) { | |
153 | nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info)); | |
154 | NV_INFO(dev, "%d: %s", pm->perflvl[i].id, info); | |
155 | } | |
156 | ||
157 | /* determine current ("boot") performance level */ | |
158 | ret = nouveau_pm_perflvl_get(dev, &pm->boot); | |
159 | if (ret == 0) { | |
160 | pm->cur = &pm->boot; | |
161 | ||
162 | nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info)); | |
163 | NV_INFO(dev, "c: %s", info); | |
164 | } | |
165 | ||
166 | /* initialise sysfs */ | |
167 | ret = device_create_file(d, &dev_attr_performance_level); | |
168 | if (ret) | |
169 | return ret; | |
170 | ||
171 | for (i = 0; i < pm->nr_perflvl; i++) { | |
172 | struct nouveau_pm_level *perflvl = &pm->perflvl[i]; | |
173 | ||
174 | perflvl->dev_attr.attr.name = perflvl->name; | |
175 | perflvl->dev_attr.attr.mode = S_IRUGO; | |
176 | perflvl->dev_attr.show = nouveau_pm_get_perflvl_info; | |
177 | perflvl->dev_attr.store = NULL; | |
178 | sysfs_attr_init(&perflvl->dev_attr.attr); | |
179 | ||
180 | ret = device_create_file(d, &perflvl->dev_attr); | |
181 | if (ret) { | |
182 | NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n", | |
183 | perflvl->id, i); | |
184 | perflvl->dev_attr.attr.name = NULL; | |
185 | nouveau_pm_fini(dev); | |
186 | return ret; | |
187 | } | |
188 | } | |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
193 | void | |
194 | nouveau_pm_fini(struct drm_device *dev) | |
195 | { | |
196 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
197 | struct nouveau_pm_engine *pm = &dev_priv->engine.pm; | |
198 | struct device *d = &dev->pdev->dev; | |
199 | int i; | |
200 | ||
201 | device_remove_file(d, &dev_attr_performance_level); | |
202 | for (i = 0; i < pm->nr_perflvl; i++) { | |
203 | struct nouveau_pm_level *pl = &pm->perflvl[i]; | |
204 | ||
205 | if (!pl->dev_attr.attr.name) | |
206 | break; | |
207 | ||
208 | device_remove_file(d, &pl->dev_attr); | |
209 | } | |
210 | ||
211 | nouveau_perf_fini(dev); | |
212 | nouveau_volt_fini(dev); | |
213 | } | |
214 |