Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2012 Intel Corporation |
| 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 (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Ben Widawsky <ben@bwidawsk.net> |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include <linux/device.h> |
| 29 | #include <linux/module.h> |
| 30 | #include <linux/stat.h> |
| 31 | #include <linux/sysfs.h> |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 32 | #include "intel_drv.h" |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 33 | #include "i915_drv.h" |
| 34 | |
Hunt Xu | 5ab3633 | 2012-07-01 03:45:07 +0000 | [diff] [blame] | 35 | #ifdef CONFIG_PM |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 36 | static u32 calc_residency(struct drm_device *dev, const u32 reg) |
| 37 | { |
| 38 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 39 | u64 raw_time; /* 32b value may overflow during fixed point math */ |
| 40 | |
| 41 | if (!intel_enable_rc6(dev)) |
| 42 | return 0; |
| 43 | |
Ben Widawsky | a85d4bc | 2012-04-20 11:50:01 -0700 | [diff] [blame] | 44 | raw_time = I915_READ(reg) * 128ULL; |
| 45 | return DIV_ROUND_UP_ULL(raw_time, 100000); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 46 | } |
| 47 | |
| 48 | static ssize_t |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 49 | show_rc6_mask(struct device *kdev, struct device_attribute *attr, char *buf) |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 50 | { |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 51 | struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 52 | return snprintf(buf, PAGE_SIZE, "%x", intel_enable_rc6(dminor->dev)); |
| 53 | } |
| 54 | |
| 55 | static ssize_t |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 56 | show_rc6_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 57 | { |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 58 | struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 59 | u32 rc6_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6); |
| 60 | return snprintf(buf, PAGE_SIZE, "%u", rc6_residency); |
| 61 | } |
| 62 | |
| 63 | static ssize_t |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 64 | show_rc6p_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 65 | { |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 66 | struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 67 | u32 rc6p_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6p); |
| 68 | return snprintf(buf, PAGE_SIZE, "%u", rc6p_residency); |
| 69 | } |
| 70 | |
| 71 | static ssize_t |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 72 | show_rc6pp_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 73 | { |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 74 | struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 75 | u32 rc6pp_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6pp); |
| 76 | return snprintf(buf, PAGE_SIZE, "%u", rc6pp_residency); |
| 77 | } |
| 78 | |
| 79 | static DEVICE_ATTR(rc6_enable, S_IRUGO, show_rc6_mask, NULL); |
| 80 | static DEVICE_ATTR(rc6_residency_ms, S_IRUGO, show_rc6_ms, NULL); |
| 81 | static DEVICE_ATTR(rc6p_residency_ms, S_IRUGO, show_rc6p_ms, NULL); |
| 82 | static DEVICE_ATTR(rc6pp_residency_ms, S_IRUGO, show_rc6pp_ms, NULL); |
| 83 | |
| 84 | static struct attribute *rc6_attrs[] = { |
| 85 | &dev_attr_rc6_enable.attr, |
| 86 | &dev_attr_rc6_residency_ms.attr, |
| 87 | &dev_attr_rc6p_residency_ms.attr, |
| 88 | &dev_attr_rc6pp_residency_ms.attr, |
| 89 | NULL |
| 90 | }; |
| 91 | |
| 92 | static struct attribute_group rc6_attr_group = { |
| 93 | .name = power_group_name, |
| 94 | .attrs = rc6_attrs |
| 95 | }; |
Ben Widawsky | 8c3f929 | 2012-09-02 00:24:40 -0700 | [diff] [blame] | 96 | #endif |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 97 | |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 98 | static int l3_access_valid(struct drm_device *dev, loff_t offset) |
| 99 | { |
| 100 | if (!IS_IVYBRIDGE(dev)) |
| 101 | return -EPERM; |
| 102 | |
| 103 | if (offset % 4 != 0) |
| 104 | return -EINVAL; |
| 105 | |
| 106 | if (offset >= GEN7_L3LOG_SIZE) |
| 107 | return -ENXIO; |
| 108 | |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | static ssize_t |
| 113 | i915_l3_read(struct file *filp, struct kobject *kobj, |
| 114 | struct bin_attribute *attr, char *buf, |
| 115 | loff_t offset, size_t count) |
| 116 | { |
| 117 | struct device *dev = container_of(kobj, struct device, kobj); |
| 118 | struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev); |
| 119 | struct drm_device *drm_dev = dminor->dev; |
| 120 | struct drm_i915_private *dev_priv = drm_dev->dev_private; |
| 121 | uint32_t misccpctl; |
| 122 | int i, ret; |
| 123 | |
| 124 | ret = l3_access_valid(drm_dev, offset); |
| 125 | if (ret) |
| 126 | return ret; |
| 127 | |
| 128 | ret = i915_mutex_lock_interruptible(drm_dev); |
| 129 | if (ret) |
| 130 | return ret; |
| 131 | |
| 132 | misccpctl = I915_READ(GEN7_MISCCPCTL); |
| 133 | I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); |
| 134 | |
| 135 | for (i = offset; count >= 4 && i < GEN7_L3LOG_SIZE; i += 4, count -= 4) |
| 136 | *((uint32_t *)(&buf[i])) = I915_READ(GEN7_L3LOG_BASE + i); |
| 137 | |
| 138 | I915_WRITE(GEN7_MISCCPCTL, misccpctl); |
| 139 | |
| 140 | mutex_unlock(&drm_dev->struct_mutex); |
| 141 | |
| 142 | return i - offset; |
| 143 | } |
| 144 | |
| 145 | static ssize_t |
| 146 | i915_l3_write(struct file *filp, struct kobject *kobj, |
| 147 | struct bin_attribute *attr, char *buf, |
| 148 | loff_t offset, size_t count) |
| 149 | { |
| 150 | struct device *dev = container_of(kobj, struct device, kobj); |
| 151 | struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev); |
| 152 | struct drm_device *drm_dev = dminor->dev; |
| 153 | struct drm_i915_private *dev_priv = drm_dev->dev_private; |
| 154 | u32 *temp = NULL; /* Just here to make handling failures easy */ |
| 155 | int ret; |
| 156 | |
| 157 | ret = l3_access_valid(drm_dev, offset); |
| 158 | if (ret) |
| 159 | return ret; |
| 160 | |
| 161 | ret = i915_mutex_lock_interruptible(drm_dev); |
| 162 | if (ret) |
| 163 | return ret; |
| 164 | |
Daniel Vetter | a4da4fa | 2012-11-02 19:55:07 +0100 | [diff] [blame] | 165 | if (!dev_priv->l3_parity.remap_info) { |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 166 | temp = kzalloc(GEN7_L3LOG_SIZE, GFP_KERNEL); |
| 167 | if (!temp) { |
| 168 | mutex_unlock(&drm_dev->struct_mutex); |
| 169 | return -ENOMEM; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | ret = i915_gpu_idle(drm_dev); |
| 174 | if (ret) { |
| 175 | kfree(temp); |
| 176 | mutex_unlock(&drm_dev->struct_mutex); |
| 177 | return ret; |
| 178 | } |
| 179 | |
| 180 | /* TODO: Ideally we really want a GPU reset here to make sure errors |
| 181 | * aren't propagated. Since I cannot find a stable way to reset the GPU |
| 182 | * at this point it is left as a TODO. |
| 183 | */ |
| 184 | if (temp) |
Daniel Vetter | a4da4fa | 2012-11-02 19:55:07 +0100 | [diff] [blame] | 185 | dev_priv->l3_parity.remap_info = temp; |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 186 | |
Daniel Vetter | a4da4fa | 2012-11-02 19:55:07 +0100 | [diff] [blame] | 187 | memcpy(dev_priv->l3_parity.remap_info + (offset/4), |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 188 | buf + (offset/4), |
| 189 | count); |
| 190 | |
| 191 | i915_gem_l3_remap(drm_dev); |
| 192 | |
| 193 | mutex_unlock(&drm_dev->struct_mutex); |
| 194 | |
| 195 | return count; |
| 196 | } |
| 197 | |
| 198 | static struct bin_attribute dpf_attrs = { |
| 199 | .attr = {.name = "l3_parity", .mode = (S_IRUSR | S_IWUSR)}, |
| 200 | .size = GEN7_L3LOG_SIZE, |
| 201 | .read = i915_l3_read, |
| 202 | .write = i915_l3_write, |
| 203 | .mmap = NULL |
| 204 | }; |
| 205 | |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 206 | static ssize_t gt_cur_freq_mhz_show(struct device *kdev, |
| 207 | struct device_attribute *attr, char *buf) |
| 208 | { |
| 209 | struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); |
| 210 | struct drm_device *dev = minor->dev; |
| 211 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 212 | int ret; |
| 213 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 214 | mutex_lock(&dev_priv->rps.hw_lock); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 215 | ret = dev_priv->rps.cur_delay * GT_FREQUENCY_MULTIPLIER; |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 216 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 217 | |
| 218 | return snprintf(buf, PAGE_SIZE, "%d", ret); |
| 219 | } |
| 220 | |
| 221 | static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) |
| 222 | { |
| 223 | struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); |
| 224 | struct drm_device *dev = minor->dev; |
| 225 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 226 | int ret; |
| 227 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 228 | mutex_lock(&dev_priv->rps.hw_lock); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 229 | ret = dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER; |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 230 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 231 | |
| 232 | return snprintf(buf, PAGE_SIZE, "%d", ret); |
| 233 | } |
| 234 | |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 235 | static ssize_t gt_max_freq_mhz_store(struct device *kdev, |
| 236 | struct device_attribute *attr, |
| 237 | const char *buf, size_t count) |
| 238 | { |
| 239 | struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); |
| 240 | struct drm_device *dev = minor->dev; |
| 241 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 242 | u32 val, rp_state_cap, hw_max, hw_min; |
| 243 | ssize_t ret; |
| 244 | |
| 245 | ret = kstrtou32(buf, 0, &val); |
| 246 | if (ret) |
| 247 | return ret; |
| 248 | |
| 249 | val /= GT_FREQUENCY_MULTIPLIER; |
| 250 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 251 | mutex_lock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 252 | |
| 253 | rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); |
| 254 | hw_max = (rp_state_cap & 0xff); |
| 255 | hw_min = ((rp_state_cap & 0xff0000) >> 16); |
| 256 | |
| 257 | if (val < hw_min || val > hw_max || val < dev_priv->rps.min_delay) { |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 258 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 259 | return -EINVAL; |
| 260 | } |
| 261 | |
| 262 | if (dev_priv->rps.cur_delay > val) |
| 263 | gen6_set_rps(dev_priv->dev, val); |
| 264 | |
| 265 | dev_priv->rps.max_delay = val; |
| 266 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 267 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 268 | |
| 269 | return count; |
| 270 | } |
| 271 | |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 272 | static ssize_t gt_min_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) |
| 273 | { |
| 274 | struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); |
| 275 | struct drm_device *dev = minor->dev; |
| 276 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 277 | int ret; |
| 278 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 279 | mutex_lock(&dev_priv->rps.hw_lock); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 280 | ret = dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER; |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 281 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 282 | |
| 283 | return snprintf(buf, PAGE_SIZE, "%d", ret); |
| 284 | } |
| 285 | |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 286 | static ssize_t gt_min_freq_mhz_store(struct device *kdev, |
| 287 | struct device_attribute *attr, |
| 288 | const char *buf, size_t count) |
| 289 | { |
| 290 | struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); |
| 291 | struct drm_device *dev = minor->dev; |
| 292 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 293 | u32 val, rp_state_cap, hw_max, hw_min; |
| 294 | ssize_t ret; |
| 295 | |
| 296 | ret = kstrtou32(buf, 0, &val); |
| 297 | if (ret) |
| 298 | return ret; |
| 299 | |
| 300 | val /= GT_FREQUENCY_MULTIPLIER; |
| 301 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 302 | mutex_lock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 303 | |
| 304 | rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); |
| 305 | hw_max = (rp_state_cap & 0xff); |
| 306 | hw_min = ((rp_state_cap & 0xff0000) >> 16); |
| 307 | |
| 308 | if (val < hw_min || val > hw_max || val > dev_priv->rps.max_delay) { |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 309 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 310 | return -EINVAL; |
| 311 | } |
| 312 | |
| 313 | if (dev_priv->rps.cur_delay < val) |
| 314 | gen6_set_rps(dev_priv->dev, val); |
| 315 | |
| 316 | dev_priv->rps.min_delay = val; |
| 317 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame^] | 318 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 319 | |
| 320 | return count; |
| 321 | |
| 322 | } |
| 323 | |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 324 | static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show, NULL); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 325 | static DEVICE_ATTR(gt_max_freq_mhz, S_IRUGO | S_IWUSR, gt_max_freq_mhz_show, gt_max_freq_mhz_store); |
| 326 | static DEVICE_ATTR(gt_min_freq_mhz, S_IRUGO | S_IWUSR, gt_min_freq_mhz_show, gt_min_freq_mhz_store); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 327 | |
Ben Widawsky | ac6ae34 | 2012-09-07 19:43:44 -0700 | [diff] [blame] | 328 | |
| 329 | static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf); |
| 330 | static DEVICE_ATTR(gt_RP0_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); |
| 331 | static DEVICE_ATTR(gt_RP1_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); |
| 332 | static DEVICE_ATTR(gt_RPn_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); |
| 333 | |
| 334 | /* For now we have a static number of RP states */ |
| 335 | static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) |
| 336 | { |
| 337 | struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); |
| 338 | struct drm_device *dev = minor->dev; |
| 339 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 340 | u32 val, rp_state_cap; |
| 341 | ssize_t ret; |
| 342 | |
| 343 | ret = mutex_lock_interruptible(&dev->struct_mutex); |
| 344 | if (ret) |
| 345 | return ret; |
| 346 | rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); |
| 347 | mutex_unlock(&dev->struct_mutex); |
| 348 | |
| 349 | if (attr == &dev_attr_gt_RP0_freq_mhz) { |
| 350 | val = ((rp_state_cap & 0x0000ff) >> 0) * GT_FREQUENCY_MULTIPLIER; |
| 351 | } else if (attr == &dev_attr_gt_RP1_freq_mhz) { |
| 352 | val = ((rp_state_cap & 0x00ff00) >> 8) * GT_FREQUENCY_MULTIPLIER; |
| 353 | } else if (attr == &dev_attr_gt_RPn_freq_mhz) { |
| 354 | val = ((rp_state_cap & 0xff0000) >> 16) * GT_FREQUENCY_MULTIPLIER; |
| 355 | } else { |
| 356 | BUG(); |
| 357 | } |
| 358 | return snprintf(buf, PAGE_SIZE, "%d", val); |
| 359 | } |
| 360 | |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 361 | static const struct attribute *gen6_attrs[] = { |
| 362 | &dev_attr_gt_cur_freq_mhz.attr, |
| 363 | &dev_attr_gt_max_freq_mhz.attr, |
| 364 | &dev_attr_gt_min_freq_mhz.attr, |
Ben Widawsky | ac6ae34 | 2012-09-07 19:43:44 -0700 | [diff] [blame] | 365 | &dev_attr_gt_RP0_freq_mhz.attr, |
| 366 | &dev_attr_gt_RP1_freq_mhz.attr, |
| 367 | &dev_attr_gt_RPn_freq_mhz.attr, |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 368 | NULL, |
| 369 | }; |
| 370 | |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 371 | void i915_setup_sysfs(struct drm_device *dev) |
| 372 | { |
| 373 | int ret; |
| 374 | |
Ben Widawsky | 8c3f929 | 2012-09-02 00:24:40 -0700 | [diff] [blame] | 375 | #ifdef CONFIG_PM |
Daniel Vetter | 112abd2 | 2012-05-31 14:57:43 +0200 | [diff] [blame] | 376 | if (INTEL_INFO(dev)->gen >= 6) { |
| 377 | ret = sysfs_merge_group(&dev->primary->kdev.kobj, |
| 378 | &rc6_attr_group); |
| 379 | if (ret) |
| 380 | DRM_ERROR("RC6 residency sysfs setup failed\n"); |
| 381 | } |
Ben Widawsky | 8c3f929 | 2012-09-02 00:24:40 -0700 | [diff] [blame] | 382 | #endif |
Ben Widawsky | e1ef7cc | 2012-07-24 20:47:31 -0700 | [diff] [blame] | 383 | if (HAS_L3_GPU_CACHE(dev)) { |
Daniel Vetter | 112abd2 | 2012-05-31 14:57:43 +0200 | [diff] [blame] | 384 | ret = device_create_bin_file(&dev->primary->kdev, &dpf_attrs); |
| 385 | if (ret) |
| 386 | DRM_ERROR("l3 parity sysfs setup failed\n"); |
| 387 | } |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 388 | |
| 389 | if (INTEL_INFO(dev)->gen >= 6) { |
| 390 | ret = sysfs_create_files(&dev->primary->kdev.kobj, gen6_attrs); |
| 391 | if (ret) |
| 392 | DRM_ERROR("gen6 sysfs setup failed\n"); |
| 393 | } |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 394 | } |
| 395 | |
| 396 | void i915_teardown_sysfs(struct drm_device *dev) |
| 397 | { |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 398 | sysfs_remove_files(&dev->primary->kdev.kobj, gen6_attrs); |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 399 | device_remove_bin_file(&dev->primary->kdev, &dpf_attrs); |
Ben Widawsky | 853c70e | 2012-09-19 10:50:19 -0700 | [diff] [blame] | 400 | #ifdef CONFIG_PM |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 401 | sysfs_unmerge_group(&dev->primary->kdev.kobj, &rc6_attr_group); |
Ben Widawsky | 853c70e | 2012-09-19 10:50:19 -0700 | [diff] [blame] | 402 | #endif |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 403 | } |