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 | |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 35 | #define dev_to_drm_minor(d) dev_get_drvdata((d)) |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 36 | |
Hunt Xu | 5ab3633 | 2012-07-01 03:45:07 +0000 | [diff] [blame] | 37 | #ifdef CONFIG_PM |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 38 | static u32 calc_residency(struct drm_device *dev, const u32 reg) |
| 39 | { |
| 40 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 41 | u64 raw_time; /* 32b value may overflow during fixed point math */ |
Ville Syrjälä | 2cc9fab | 2015-09-28 23:43:43 +0300 | [diff] [blame] | 42 | u64 units = 128ULL, div = 100000ULL; |
Paulo Zanoni | c8c8fb3 | 2013-11-27 18:21:54 -0200 | [diff] [blame] | 43 | u32 ret; |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 44 | |
| 45 | if (!intel_enable_rc6(dev)) |
| 46 | return 0; |
| 47 | |
Paulo Zanoni | c8c8fb3 | 2013-11-27 18:21:54 -0200 | [diff] [blame] | 48 | intel_runtime_pm_get(dev_priv); |
| 49 | |
Mika Kuoppala | 542a6b2 | 2014-07-09 14:55:56 +0300 | [diff] [blame] | 50 | /* On VLV and CHV, residency time is in CZ units rather than 1.28us */ |
Jesse Barnes | e454a05 | 2013-09-26 17:55:58 -0700 | [diff] [blame] | 51 | if (IS_VALLEYVIEW(dev)) { |
Ville Syrjälä | 2cc9fab | 2015-09-28 23:43:43 +0300 | [diff] [blame] | 52 | units = 1; |
| 53 | div = dev_priv->czclk_freq; |
Mika Kuoppala | 542a6b2 | 2014-07-09 14:55:56 +0300 | [diff] [blame] | 54 | |
Jesse Barnes | e454a05 | 2013-09-26 17:55:58 -0700 | [diff] [blame] | 55 | if (I915_READ(VLV_COUNTER_CONTROL) & VLV_COUNT_RANGE_HIGH) |
| 56 | units <<= 8; |
Imre Deak | d813510 | 2015-09-29 16:28:46 +0300 | [diff] [blame] | 57 | } else if (IS_BROXTON(dev)) { |
| 58 | units = 1; |
| 59 | div = 1200; /* 833.33ns */ |
Jesse Barnes | e454a05 | 2013-09-26 17:55:58 -0700 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | raw_time = I915_READ(reg) * units; |
Paulo Zanoni | c8c8fb3 | 2013-11-27 18:21:54 -0200 | [diff] [blame] | 63 | ret = DIV_ROUND_UP_ULL(raw_time, div); |
| 64 | |
Paulo Zanoni | c8c8fb3 | 2013-11-27 18:21:54 -0200 | [diff] [blame] | 65 | intel_runtime_pm_put(dev_priv); |
| 66 | return ret; |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | static ssize_t |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 70 | show_rc6_mask(struct device *kdev, struct device_attribute *attr, char *buf) |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 71 | { |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 72 | struct drm_minor *dminor = dev_to_drm_minor(kdev); |
Jani Nikula | 3e2a155 | 2013-02-14 10:42:11 +0200 | [diff] [blame] | 73 | return snprintf(buf, PAGE_SIZE, "%x\n", intel_enable_rc6(dminor->dev)); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | static ssize_t |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 77 | show_rc6_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 78 | { |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 79 | struct drm_minor *dminor = dev_get_drvdata(kdev); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 80 | u32 rc6_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6); |
Jani Nikula | 3e2a155 | 2013-02-14 10:42:11 +0200 | [diff] [blame] | 81 | return snprintf(buf, PAGE_SIZE, "%u\n", rc6_residency); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | static ssize_t |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 85 | show_rc6p_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 86 | { |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 87 | struct drm_minor *dminor = dev_to_drm_minor(kdev); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 88 | u32 rc6p_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6p); |
Jani Nikula | 3e2a155 | 2013-02-14 10:42:11 +0200 | [diff] [blame] | 89 | return snprintf(buf, PAGE_SIZE, "%u\n", rc6p_residency); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 90 | } |
| 91 | |
| 92 | static ssize_t |
Ben Widawsky | dbdfd8e | 2012-09-07 19:43:38 -0700 | [diff] [blame] | 93 | show_rc6pp_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 94 | { |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 95 | struct drm_minor *dminor = dev_to_drm_minor(kdev); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 96 | u32 rc6pp_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6pp); |
Jani Nikula | 3e2a155 | 2013-02-14 10:42:11 +0200 | [diff] [blame] | 97 | return snprintf(buf, PAGE_SIZE, "%u\n", rc6pp_residency); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 98 | } |
| 99 | |
Ville Syrjälä | 626ad6f | 2015-02-26 21:10:27 +0530 | [diff] [blame] | 100 | static ssize_t |
| 101 | show_media_rc6_ms(struct device *kdev, struct device_attribute *attr, char *buf) |
| 102 | { |
| 103 | struct drm_minor *dminor = dev_get_drvdata(kdev); |
| 104 | u32 rc6_residency = calc_residency(dminor->dev, VLV_GT_MEDIA_RC6); |
| 105 | return snprintf(buf, PAGE_SIZE, "%u\n", rc6_residency); |
| 106 | } |
| 107 | |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 108 | static DEVICE_ATTR(rc6_enable, S_IRUGO, show_rc6_mask, NULL); |
| 109 | static DEVICE_ATTR(rc6_residency_ms, S_IRUGO, show_rc6_ms, NULL); |
| 110 | static DEVICE_ATTR(rc6p_residency_ms, S_IRUGO, show_rc6p_ms, NULL); |
| 111 | static DEVICE_ATTR(rc6pp_residency_ms, S_IRUGO, show_rc6pp_ms, NULL); |
Ville Syrjälä | 626ad6f | 2015-02-26 21:10:27 +0530 | [diff] [blame] | 112 | static DEVICE_ATTR(media_rc6_residency_ms, S_IRUGO, show_media_rc6_ms, NULL); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 113 | |
| 114 | static struct attribute *rc6_attrs[] = { |
| 115 | &dev_attr_rc6_enable.attr, |
| 116 | &dev_attr_rc6_residency_ms.attr, |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 117 | NULL |
| 118 | }; |
| 119 | |
| 120 | static struct attribute_group rc6_attr_group = { |
| 121 | .name = power_group_name, |
| 122 | .attrs = rc6_attrs |
| 123 | }; |
Rodrigo Vivi | 58abf1d | 2014-10-07 07:06:50 -0700 | [diff] [blame] | 124 | |
| 125 | static struct attribute *rc6p_attrs[] = { |
| 126 | &dev_attr_rc6p_residency_ms.attr, |
| 127 | &dev_attr_rc6pp_residency_ms.attr, |
| 128 | NULL |
| 129 | }; |
| 130 | |
| 131 | static struct attribute_group rc6p_attr_group = { |
| 132 | .name = power_group_name, |
| 133 | .attrs = rc6p_attrs |
| 134 | }; |
Ville Syrjälä | 626ad6f | 2015-02-26 21:10:27 +0530 | [diff] [blame] | 135 | |
| 136 | static struct attribute *media_rc6_attrs[] = { |
| 137 | &dev_attr_media_rc6_residency_ms.attr, |
| 138 | NULL |
| 139 | }; |
| 140 | |
| 141 | static struct attribute_group media_rc6_attr_group = { |
| 142 | .name = power_group_name, |
| 143 | .attrs = media_rc6_attrs |
| 144 | }; |
Ben Widawsky | 8c3f929 | 2012-09-02 00:24:40 -0700 | [diff] [blame] | 145 | #endif |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 146 | |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 147 | static int l3_access_valid(struct drm_device *dev, loff_t offset) |
| 148 | { |
Ben Widawsky | 040d2ba | 2013-09-19 11:01:40 -0700 | [diff] [blame] | 149 | if (!HAS_L3_DPF(dev)) |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 150 | return -EPERM; |
| 151 | |
| 152 | if (offset % 4 != 0) |
| 153 | return -EINVAL; |
| 154 | |
| 155 | if (offset >= GEN7_L3LOG_SIZE) |
| 156 | return -ENXIO; |
| 157 | |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | static ssize_t |
| 162 | i915_l3_read(struct file *filp, struct kobject *kobj, |
| 163 | struct bin_attribute *attr, char *buf, |
| 164 | loff_t offset, size_t count) |
| 165 | { |
| 166 | struct device *dev = container_of(kobj, struct device, kobj); |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 167 | struct drm_minor *dminor = dev_to_drm_minor(dev); |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 168 | struct drm_device *drm_dev = dminor->dev; |
| 169 | struct drm_i915_private *dev_priv = drm_dev->dev_private; |
Ben Widawsky | 35a85ac | 2013-09-19 11:13:41 -0700 | [diff] [blame] | 170 | int slice = (int)(uintptr_t)attr->private; |
Ben Widawsky | 3ccfd19 | 2013-09-18 19:03:18 -0700 | [diff] [blame] | 171 | int ret; |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 172 | |
Ben Widawsky | 1c3dcd1 | 2013-09-12 22:28:28 -0700 | [diff] [blame] | 173 | count = round_down(count, 4); |
| 174 | |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 175 | ret = l3_access_valid(drm_dev, offset); |
| 176 | if (ret) |
| 177 | return ret; |
| 178 | |
Dan Carpenter | e5ad402 | 2013-09-20 14:20:18 +0300 | [diff] [blame] | 179 | count = min_t(size_t, GEN7_L3LOG_SIZE - offset, count); |
Ben Widawsky | 33618ea | 2013-09-12 22:28:29 -0700 | [diff] [blame] | 180 | |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 181 | ret = i915_mutex_lock_interruptible(drm_dev); |
| 182 | if (ret) |
| 183 | return ret; |
| 184 | |
Ben Widawsky | 3ccfd19 | 2013-09-18 19:03:18 -0700 | [diff] [blame] | 185 | if (dev_priv->l3_parity.remap_info[slice]) |
| 186 | memcpy(buf, |
| 187 | dev_priv->l3_parity.remap_info[slice] + (offset/4), |
| 188 | count); |
| 189 | else |
| 190 | memset(buf, 0, count); |
Ben Widawsky | 1c966dd | 2013-09-17 21:12:42 -0700 | [diff] [blame] | 191 | |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 192 | mutex_unlock(&drm_dev->struct_mutex); |
| 193 | |
Ben Widawsky | 1c966dd | 2013-09-17 21:12:42 -0700 | [diff] [blame] | 194 | return count; |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | static ssize_t |
| 198 | i915_l3_write(struct file *filp, struct kobject *kobj, |
| 199 | struct bin_attribute *attr, char *buf, |
| 200 | loff_t offset, size_t count) |
| 201 | { |
| 202 | struct device *dev = container_of(kobj, struct device, kobj); |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 203 | struct drm_minor *dminor = dev_to_drm_minor(dev); |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 204 | struct drm_device *drm_dev = dminor->dev; |
| 205 | struct drm_i915_private *dev_priv = drm_dev->dev_private; |
Oscar Mateo | 273497e | 2014-05-22 14:13:37 +0100 | [diff] [blame] | 206 | struct intel_context *ctx; |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 207 | u32 *temp = NULL; /* Just here to make handling failures easy */ |
Ben Widawsky | 35a85ac | 2013-09-19 11:13:41 -0700 | [diff] [blame] | 208 | int slice = (int)(uintptr_t)attr->private; |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 209 | int ret; |
| 210 | |
Ben Widawsky | 8245be3 | 2013-11-06 13:56:29 -0200 | [diff] [blame] | 211 | if (!HAS_HW_CONTEXTS(drm_dev)) |
| 212 | return -ENXIO; |
| 213 | |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 214 | ret = l3_access_valid(drm_dev, offset); |
| 215 | if (ret) |
| 216 | return ret; |
| 217 | |
| 218 | ret = i915_mutex_lock_interruptible(drm_dev); |
| 219 | if (ret) |
| 220 | return ret; |
| 221 | |
Ben Widawsky | 35a85ac | 2013-09-19 11:13:41 -0700 | [diff] [blame] | 222 | if (!dev_priv->l3_parity.remap_info[slice]) { |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 223 | temp = kzalloc(GEN7_L3LOG_SIZE, GFP_KERNEL); |
| 224 | if (!temp) { |
| 225 | mutex_unlock(&drm_dev->struct_mutex); |
| 226 | return -ENOMEM; |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | ret = i915_gpu_idle(drm_dev); |
| 231 | if (ret) { |
| 232 | kfree(temp); |
| 233 | mutex_unlock(&drm_dev->struct_mutex); |
| 234 | return ret; |
| 235 | } |
| 236 | |
| 237 | /* TODO: Ideally we really want a GPU reset here to make sure errors |
| 238 | * aren't propagated. Since I cannot find a stable way to reset the GPU |
| 239 | * at this point it is left as a TODO. |
| 240 | */ |
| 241 | if (temp) |
Ben Widawsky | 35a85ac | 2013-09-19 11:13:41 -0700 | [diff] [blame] | 242 | dev_priv->l3_parity.remap_info[slice] = temp; |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 243 | |
Ben Widawsky | 35a85ac | 2013-09-19 11:13:41 -0700 | [diff] [blame] | 244 | memcpy(dev_priv->l3_parity.remap_info[slice] + (offset/4), buf, count); |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 245 | |
Ben Widawsky | 3ccfd19 | 2013-09-18 19:03:18 -0700 | [diff] [blame] | 246 | /* NB: We defer the remapping until we switch to the context */ |
| 247 | list_for_each_entry(ctx, &dev_priv->context_list, link) |
| 248 | ctx->remap_slice |= (1<<slice); |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 249 | |
| 250 | mutex_unlock(&drm_dev->struct_mutex); |
| 251 | |
| 252 | return count; |
| 253 | } |
| 254 | |
| 255 | static struct bin_attribute dpf_attrs = { |
| 256 | .attr = {.name = "l3_parity", .mode = (S_IRUSR | S_IWUSR)}, |
| 257 | .size = GEN7_L3LOG_SIZE, |
| 258 | .read = i915_l3_read, |
| 259 | .write = i915_l3_write, |
Ben Widawsky | 35a85ac | 2013-09-19 11:13:41 -0700 | [diff] [blame] | 260 | .mmap = NULL, |
| 261 | .private = (void *)0 |
| 262 | }; |
| 263 | |
| 264 | static struct bin_attribute dpf_attrs_1 = { |
| 265 | .attr = {.name = "l3_parity_slice_1", .mode = (S_IRUSR | S_IWUSR)}, |
| 266 | .size = GEN7_L3LOG_SIZE, |
| 267 | .read = i915_l3_read, |
| 268 | .write = i915_l3_write, |
| 269 | .mmap = NULL, |
| 270 | .private = (void *)1 |
Ben Widawsky | 84bc758 | 2012-05-25 16:56:25 -0700 | [diff] [blame] | 271 | }; |
| 272 | |
Ville Syrjälä | c8c972e | 2015-01-23 21:04:24 +0200 | [diff] [blame] | 273 | static ssize_t gt_act_freq_mhz_show(struct device *kdev, |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 274 | struct device_attribute *attr, char *buf) |
| 275 | { |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 276 | struct drm_minor *minor = dev_to_drm_minor(kdev); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 277 | struct drm_device *dev = minor->dev; |
| 278 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 279 | int ret; |
| 280 | |
Tom O'Rourke | 5c9669c | 2013-09-16 14:56:43 -0700 | [diff] [blame] | 281 | flush_delayed_work(&dev_priv->rps.delayed_resume_work); |
| 282 | |
Imre Deak | d46c051 | 2014-04-14 20:24:27 +0300 | [diff] [blame] | 283 | intel_runtime_pm_get(dev_priv); |
| 284 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 285 | mutex_lock(&dev_priv->rps.hw_lock); |
Jesse Barnes | 177006a | 2013-05-02 10:48:07 -0700 | [diff] [blame] | 286 | if (IS_VALLEYVIEW(dev_priv->dev)) { |
| 287 | u32 freq; |
Jani Nikula | 6493625 | 2013-05-22 15:36:20 +0300 | [diff] [blame] | 288 | freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); |
Ville Syrjälä | 7c59a9c1 | 2015-01-23 21:04:26 +0200 | [diff] [blame] | 289 | ret = intel_gpu_freq(dev_priv, (freq >> 8) & 0xff); |
Jesse Barnes | 177006a | 2013-05-02 10:48:07 -0700 | [diff] [blame] | 290 | } else { |
Ville Syrjälä | c8c972e | 2015-01-23 21:04:24 +0200 | [diff] [blame] | 291 | u32 rpstat = I915_READ(GEN6_RPSTAT1); |
Akash Goel | ed64d66 | 2015-03-06 11:07:22 +0530 | [diff] [blame] | 292 | if (IS_GEN9(dev_priv)) |
| 293 | ret = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT; |
| 294 | else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) |
Ville Syrjälä | c8c972e | 2015-01-23 21:04:24 +0200 | [diff] [blame] | 295 | ret = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT; |
| 296 | else |
| 297 | ret = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT; |
Ville Syrjälä | 7c59a9c1 | 2015-01-23 21:04:26 +0200 | [diff] [blame] | 298 | ret = intel_gpu_freq(dev_priv, ret); |
Ville Syrjälä | c8c972e | 2015-01-23 21:04:24 +0200 | [diff] [blame] | 299 | } |
| 300 | mutex_unlock(&dev_priv->rps.hw_lock); |
| 301 | |
| 302 | intel_runtime_pm_put(dev_priv); |
| 303 | |
| 304 | return snprintf(buf, PAGE_SIZE, "%d\n", ret); |
| 305 | } |
| 306 | |
| 307 | static ssize_t gt_cur_freq_mhz_show(struct device *kdev, |
| 308 | struct device_attribute *attr, char *buf) |
| 309 | { |
| 310 | struct drm_minor *minor = dev_to_drm_minor(kdev); |
| 311 | struct drm_device *dev = minor->dev; |
| 312 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 313 | int ret; |
| 314 | |
| 315 | flush_delayed_work(&dev_priv->rps.delayed_resume_work); |
| 316 | |
| 317 | intel_runtime_pm_get(dev_priv); |
| 318 | |
| 319 | mutex_lock(&dev_priv->rps.hw_lock); |
Ville Syrjälä | 7c59a9c1 | 2015-01-23 21:04:26 +0200 | [diff] [blame] | 320 | ret = intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq); |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 321 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 322 | |
Imre Deak | d46c051 | 2014-04-14 20:24:27 +0300 | [diff] [blame] | 323 | intel_runtime_pm_put(dev_priv); |
| 324 | |
Jani Nikula | 3e2a155 | 2013-02-14 10:42:11 +0200 | [diff] [blame] | 325 | return snprintf(buf, PAGE_SIZE, "%d\n", ret); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 326 | } |
| 327 | |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 328 | static ssize_t vlv_rpe_freq_mhz_show(struct device *kdev, |
| 329 | struct device_attribute *attr, char *buf) |
| 330 | { |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 331 | struct drm_minor *minor = dev_to_drm_minor(kdev); |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 332 | struct drm_device *dev = minor->dev; |
| 333 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 334 | |
Ville Syrjälä | 7c59a9c1 | 2015-01-23 21:04:26 +0200 | [diff] [blame] | 335 | return snprintf(buf, PAGE_SIZE, |
| 336 | "%d\n", |
| 337 | intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq)); |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 338 | } |
| 339 | |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 340 | static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) |
| 341 | { |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 342 | struct drm_minor *minor = dev_to_drm_minor(kdev); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 343 | struct drm_device *dev = minor->dev; |
| 344 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 345 | int ret; |
| 346 | |
Tom O'Rourke | 5c9669c | 2013-09-16 14:56:43 -0700 | [diff] [blame] | 347 | flush_delayed_work(&dev_priv->rps.delayed_resume_work); |
| 348 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 349 | mutex_lock(&dev_priv->rps.hw_lock); |
Ville Syrjälä | 7c59a9c1 | 2015-01-23 21:04:26 +0200 | [diff] [blame] | 350 | ret = intel_gpu_freq(dev_priv, dev_priv->rps.max_freq_softlimit); |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 351 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 352 | |
Jani Nikula | 3e2a155 | 2013-02-14 10:42:11 +0200 | [diff] [blame] | 353 | return snprintf(buf, PAGE_SIZE, "%d\n", ret); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 354 | } |
| 355 | |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 356 | static ssize_t gt_max_freq_mhz_store(struct device *kdev, |
| 357 | struct device_attribute *attr, |
| 358 | const char *buf, size_t count) |
| 359 | { |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 360 | struct drm_minor *minor = dev_to_drm_minor(kdev); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 361 | struct drm_device *dev = minor->dev; |
| 362 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | 2a5913a | 2014-03-19 18:31:13 -0700 | [diff] [blame] | 363 | u32 val; |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 364 | ssize_t ret; |
| 365 | |
| 366 | ret = kstrtou32(buf, 0, &val); |
| 367 | if (ret) |
| 368 | return ret; |
| 369 | |
Tom O'Rourke | 5c9669c | 2013-09-16 14:56:43 -0700 | [diff] [blame] | 370 | flush_delayed_work(&dev_priv->rps.delayed_resume_work); |
| 371 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 372 | mutex_lock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 373 | |
Ville Syrjälä | 7c59a9c1 | 2015-01-23 21:04:26 +0200 | [diff] [blame] | 374 | val = intel_freq_opcode(dev_priv, val); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 375 | |
Ben Widawsky | 2a5913a | 2014-03-19 18:31:13 -0700 | [diff] [blame] | 376 | if (val < dev_priv->rps.min_freq || |
| 377 | val > dev_priv->rps.max_freq || |
Ben Widawsky | b39fb29 | 2014-03-19 18:31:11 -0700 | [diff] [blame] | 378 | val < dev_priv->rps.min_freq_softlimit) { |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 379 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 380 | return -EINVAL; |
| 381 | } |
| 382 | |
Ben Widawsky | 2a5913a | 2014-03-19 18:31:13 -0700 | [diff] [blame] | 383 | if (val > dev_priv->rps.rp0_freq) |
Ben Widawsky | 31c7738 | 2013-04-05 14:29:22 -0700 | [diff] [blame] | 384 | DRM_DEBUG("User requested overclocking to %d\n", |
Ville Syrjälä | 7c59a9c1 | 2015-01-23 21:04:26 +0200 | [diff] [blame] | 385 | intel_gpu_freq(dev_priv, val)); |
Ben Widawsky | 31c7738 | 2013-04-05 14:29:22 -0700 | [diff] [blame] | 386 | |
Ben Widawsky | b39fb29 | 2014-03-19 18:31:11 -0700 | [diff] [blame] | 387 | dev_priv->rps.max_freq_softlimit = val; |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 388 | |
Ville Syrjälä | f745a80 | 2015-01-23 21:04:23 +0200 | [diff] [blame] | 389 | val = clamp_t(int, dev_priv->rps.cur_freq, |
| 390 | dev_priv->rps.min_freq_softlimit, |
| 391 | dev_priv->rps.max_freq_softlimit); |
| 392 | |
| 393 | /* We still need *_set_rps to process the new max_delay and |
| 394 | * update the interrupt limits and PMINTRMSK even though |
| 395 | * frequency request may be unchanged. */ |
Ville Syrjälä | ffe02b4 | 2015-02-02 19:09:50 +0200 | [diff] [blame] | 396 | intel_set_rps(dev, val); |
Chris Wilson | 6917c7b | 2013-11-06 13:56:26 -0200 | [diff] [blame] | 397 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 398 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 399 | |
| 400 | return count; |
| 401 | } |
| 402 | |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 403 | static ssize_t gt_min_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) |
| 404 | { |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 405 | struct drm_minor *minor = dev_to_drm_minor(kdev); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 406 | struct drm_device *dev = minor->dev; |
| 407 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 408 | int ret; |
| 409 | |
Tom O'Rourke | 5c9669c | 2013-09-16 14:56:43 -0700 | [diff] [blame] | 410 | flush_delayed_work(&dev_priv->rps.delayed_resume_work); |
| 411 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 412 | mutex_lock(&dev_priv->rps.hw_lock); |
Ville Syrjälä | 7c59a9c1 | 2015-01-23 21:04:26 +0200 | [diff] [blame] | 413 | ret = intel_gpu_freq(dev_priv, dev_priv->rps.min_freq_softlimit); |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 414 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 415 | |
Jani Nikula | 3e2a155 | 2013-02-14 10:42:11 +0200 | [diff] [blame] | 416 | return snprintf(buf, PAGE_SIZE, "%d\n", ret); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 417 | } |
| 418 | |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 419 | static ssize_t gt_min_freq_mhz_store(struct device *kdev, |
| 420 | struct device_attribute *attr, |
| 421 | const char *buf, size_t count) |
| 422 | { |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 423 | struct drm_minor *minor = dev_to_drm_minor(kdev); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 424 | struct drm_device *dev = minor->dev; |
| 425 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | 2a5913a | 2014-03-19 18:31:13 -0700 | [diff] [blame] | 426 | u32 val; |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 427 | ssize_t ret; |
| 428 | |
| 429 | ret = kstrtou32(buf, 0, &val); |
| 430 | if (ret) |
| 431 | return ret; |
| 432 | |
Tom O'Rourke | 5c9669c | 2013-09-16 14:56:43 -0700 | [diff] [blame] | 433 | flush_delayed_work(&dev_priv->rps.delayed_resume_work); |
| 434 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 435 | mutex_lock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 436 | |
Ville Syrjälä | 7c59a9c1 | 2015-01-23 21:04:26 +0200 | [diff] [blame] | 437 | val = intel_freq_opcode(dev_priv, val); |
Jesse Barnes | 0a073b8 | 2013-04-17 15:54:58 -0700 | [diff] [blame] | 438 | |
Ben Widawsky | 2a5913a | 2014-03-19 18:31:13 -0700 | [diff] [blame] | 439 | if (val < dev_priv->rps.min_freq || |
| 440 | val > dev_priv->rps.max_freq || |
| 441 | val > dev_priv->rps.max_freq_softlimit) { |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 442 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 443 | return -EINVAL; |
| 444 | } |
| 445 | |
Ben Widawsky | b39fb29 | 2014-03-19 18:31:11 -0700 | [diff] [blame] | 446 | dev_priv->rps.min_freq_softlimit = val; |
Chris Wilson | 6917c7b | 2013-11-06 13:56:26 -0200 | [diff] [blame] | 447 | |
Ville Syrjälä | f745a80 | 2015-01-23 21:04:23 +0200 | [diff] [blame] | 448 | val = clamp_t(int, dev_priv->rps.cur_freq, |
| 449 | dev_priv->rps.min_freq_softlimit, |
| 450 | dev_priv->rps.max_freq_softlimit); |
| 451 | |
| 452 | /* We still need *_set_rps to process the new min_delay and |
| 453 | * update the interrupt limits and PMINTRMSK even though |
| 454 | * frequency request may be unchanged. */ |
Ville Syrjälä | ffe02b4 | 2015-02-02 19:09:50 +0200 | [diff] [blame] | 455 | intel_set_rps(dev, val); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 456 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 457 | mutex_unlock(&dev_priv->rps.hw_lock); |
Ben Widawsky | 46ddf19 | 2012-09-12 18:12:07 -0700 | [diff] [blame] | 458 | |
| 459 | return count; |
| 460 | |
| 461 | } |
| 462 | |
Ville Syrjälä | c8c972e | 2015-01-23 21:04:24 +0200 | [diff] [blame] | 463 | static DEVICE_ATTR(gt_act_freq_mhz, S_IRUGO, gt_act_freq_mhz_show, NULL); |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 464 | 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] | 465 | static DEVICE_ATTR(gt_max_freq_mhz, S_IRUGO | S_IWUSR, gt_max_freq_mhz_show, gt_max_freq_mhz_store); |
| 466 | 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] | 467 | |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 468 | static DEVICE_ATTR(vlv_rpe_freq_mhz, S_IRUGO, vlv_rpe_freq_mhz_show, NULL); |
Ben Widawsky | ac6ae34 | 2012-09-07 19:43:44 -0700 | [diff] [blame] | 469 | |
| 470 | static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf); |
| 471 | static DEVICE_ATTR(gt_RP0_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); |
| 472 | static DEVICE_ATTR(gt_RP1_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); |
| 473 | static DEVICE_ATTR(gt_RPn_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); |
| 474 | |
| 475 | /* For now we have a static number of RP states */ |
| 476 | static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) |
| 477 | { |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 478 | struct drm_minor *minor = dev_to_drm_minor(kdev); |
Ben Widawsky | ac6ae34 | 2012-09-07 19:43:44 -0700 | [diff] [blame] | 479 | struct drm_device *dev = minor->dev; |
| 480 | struct drm_i915_private *dev_priv = dev->dev_private; |
Akash Goel | bc4d91f | 2015-02-26 16:09:47 +0530 | [diff] [blame] | 481 | u32 val; |
Ben Widawsky | ac6ae34 | 2012-09-07 19:43:44 -0700 | [diff] [blame] | 482 | |
Akash Goel | bc4d91f | 2015-02-26 16:09:47 +0530 | [diff] [blame] | 483 | if (attr == &dev_attr_gt_RP0_freq_mhz) |
| 484 | val = intel_gpu_freq(dev_priv, dev_priv->rps.rp0_freq); |
| 485 | else if (attr == &dev_attr_gt_RP1_freq_mhz) |
| 486 | val = intel_gpu_freq(dev_priv, dev_priv->rps.rp1_freq); |
| 487 | else if (attr == &dev_attr_gt_RPn_freq_mhz) |
| 488 | val = intel_gpu_freq(dev_priv, dev_priv->rps.min_freq); |
| 489 | else |
Ben Widawsky | ac6ae34 | 2012-09-07 19:43:44 -0700 | [diff] [blame] | 490 | BUG(); |
Akash Goel | bc4d91f | 2015-02-26 16:09:47 +0530 | [diff] [blame] | 491 | |
Jani Nikula | 3e2a155 | 2013-02-14 10:42:11 +0200 | [diff] [blame] | 492 | return snprintf(buf, PAGE_SIZE, "%d\n", val); |
Ben Widawsky | ac6ae34 | 2012-09-07 19:43:44 -0700 | [diff] [blame] | 493 | } |
| 494 | |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 495 | static const struct attribute *gen6_attrs[] = { |
Ville Syrjälä | c8c972e | 2015-01-23 21:04:24 +0200 | [diff] [blame] | 496 | &dev_attr_gt_act_freq_mhz.attr, |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 497 | &dev_attr_gt_cur_freq_mhz.attr, |
| 498 | &dev_attr_gt_max_freq_mhz.attr, |
| 499 | &dev_attr_gt_min_freq_mhz.attr, |
Ben Widawsky | ac6ae34 | 2012-09-07 19:43:44 -0700 | [diff] [blame] | 500 | &dev_attr_gt_RP0_freq_mhz.attr, |
| 501 | &dev_attr_gt_RP1_freq_mhz.attr, |
| 502 | &dev_attr_gt_RPn_freq_mhz.attr, |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 503 | NULL, |
| 504 | }; |
| 505 | |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 506 | static const struct attribute *vlv_attrs[] = { |
Ville Syrjälä | c8c972e | 2015-01-23 21:04:24 +0200 | [diff] [blame] | 507 | &dev_attr_gt_act_freq_mhz.attr, |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 508 | &dev_attr_gt_cur_freq_mhz.attr, |
| 509 | &dev_attr_gt_max_freq_mhz.attr, |
| 510 | &dev_attr_gt_min_freq_mhz.attr, |
Deepak S | 74c4f62 | 2014-07-10 13:16:22 +0530 | [diff] [blame] | 511 | &dev_attr_gt_RP0_freq_mhz.attr, |
| 512 | &dev_attr_gt_RP1_freq_mhz.attr, |
| 513 | &dev_attr_gt_RPn_freq_mhz.attr, |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 514 | &dev_attr_vlv_rpe_freq_mhz.attr, |
| 515 | NULL, |
| 516 | }; |
| 517 | |
Mika Kuoppala | ef86ddc | 2013-06-06 17:38:54 +0300 | [diff] [blame] | 518 | static ssize_t error_state_read(struct file *filp, struct kobject *kobj, |
| 519 | struct bin_attribute *attr, char *buf, |
| 520 | loff_t off, size_t count) |
| 521 | { |
| 522 | |
| 523 | struct device *kdev = container_of(kobj, struct device, kobj); |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 524 | struct drm_minor *minor = dev_to_drm_minor(kdev); |
Mika Kuoppala | ef86ddc | 2013-06-06 17:38:54 +0300 | [diff] [blame] | 525 | struct drm_device *dev = minor->dev; |
| 526 | struct i915_error_state_file_priv error_priv; |
| 527 | struct drm_i915_error_state_buf error_str; |
| 528 | ssize_t ret_count = 0; |
| 529 | int ret; |
| 530 | |
| 531 | memset(&error_priv, 0, sizeof(error_priv)); |
| 532 | |
Chris Wilson | 0a4cd7c | 2014-08-22 14:41:39 +0100 | [diff] [blame] | 533 | ret = i915_error_state_buf_init(&error_str, to_i915(dev), count, off); |
Mika Kuoppala | ef86ddc | 2013-06-06 17:38:54 +0300 | [diff] [blame] | 534 | if (ret) |
| 535 | return ret; |
| 536 | |
| 537 | error_priv.dev = dev; |
| 538 | i915_error_state_get(dev, &error_priv); |
| 539 | |
| 540 | ret = i915_error_state_to_str(&error_str, &error_priv); |
| 541 | if (ret) |
| 542 | goto out; |
| 543 | |
| 544 | ret_count = count < error_str.bytes ? count : error_str.bytes; |
| 545 | |
| 546 | memcpy(buf, error_str.buf, ret_count); |
| 547 | out: |
| 548 | i915_error_state_put(&error_priv); |
| 549 | i915_error_state_buf_release(&error_str); |
| 550 | |
| 551 | return ret ?: ret_count; |
| 552 | } |
| 553 | |
| 554 | static ssize_t error_state_write(struct file *file, struct kobject *kobj, |
| 555 | struct bin_attribute *attr, char *buf, |
| 556 | loff_t off, size_t count) |
| 557 | { |
| 558 | struct device *kdev = container_of(kobj, struct device, kobj); |
Dave Airlie | 14c8d11 | 2013-10-11 14:45:30 +1000 | [diff] [blame] | 559 | struct drm_minor *minor = dev_to_drm_minor(kdev); |
Mika Kuoppala | ef86ddc | 2013-06-06 17:38:54 +0300 | [diff] [blame] | 560 | struct drm_device *dev = minor->dev; |
| 561 | int ret; |
| 562 | |
| 563 | DRM_DEBUG_DRIVER("Resetting error state\n"); |
| 564 | |
| 565 | ret = mutex_lock_interruptible(&dev->struct_mutex); |
| 566 | if (ret) |
| 567 | return ret; |
| 568 | |
| 569 | i915_destroy_error_state(dev); |
| 570 | mutex_unlock(&dev->struct_mutex); |
| 571 | |
| 572 | return count; |
| 573 | } |
| 574 | |
| 575 | static struct bin_attribute error_state_attr = { |
| 576 | .attr.name = "error", |
| 577 | .attr.mode = S_IRUSR | S_IWUSR, |
| 578 | .size = 0, |
| 579 | .read = error_state_read, |
| 580 | .write = error_state_write, |
| 581 | }; |
| 582 | |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 583 | void i915_setup_sysfs(struct drm_device *dev) |
| 584 | { |
| 585 | int ret; |
| 586 | |
Ben Widawsky | 8c3f929 | 2012-09-02 00:24:40 -0700 | [diff] [blame] | 587 | #ifdef CONFIG_PM |
Rodrigo Vivi | 58abf1d | 2014-10-07 07:06:50 -0700 | [diff] [blame] | 588 | if (HAS_RC6(dev)) { |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 589 | ret = sysfs_merge_group(&dev->primary->kdev->kobj, |
Daniel Vetter | 112abd2 | 2012-05-31 14:57:43 +0200 | [diff] [blame] | 590 | &rc6_attr_group); |
| 591 | if (ret) |
| 592 | DRM_ERROR("RC6 residency sysfs setup failed\n"); |
| 593 | } |
Rodrigo Vivi | 58abf1d | 2014-10-07 07:06:50 -0700 | [diff] [blame] | 594 | if (HAS_RC6p(dev)) { |
| 595 | ret = sysfs_merge_group(&dev->primary->kdev->kobj, |
| 596 | &rc6p_attr_group); |
| 597 | if (ret) |
| 598 | DRM_ERROR("RC6p residency sysfs setup failed\n"); |
| 599 | } |
Ville Syrjälä | 626ad6f | 2015-02-26 21:10:27 +0530 | [diff] [blame] | 600 | if (IS_VALLEYVIEW(dev)) { |
| 601 | ret = sysfs_merge_group(&dev->primary->kdev->kobj, |
| 602 | &media_rc6_attr_group); |
| 603 | if (ret) |
| 604 | DRM_ERROR("Media RC6 residency sysfs setup failed\n"); |
| 605 | } |
Ben Widawsky | 8c3f929 | 2012-09-02 00:24:40 -0700 | [diff] [blame] | 606 | #endif |
Ben Widawsky | 040d2ba | 2013-09-19 11:01:40 -0700 | [diff] [blame] | 607 | if (HAS_L3_DPF(dev)) { |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 608 | ret = device_create_bin_file(dev->primary->kdev, &dpf_attrs); |
Daniel Vetter | 112abd2 | 2012-05-31 14:57:43 +0200 | [diff] [blame] | 609 | if (ret) |
| 610 | DRM_ERROR("l3 parity sysfs setup failed\n"); |
Ben Widawsky | 35a85ac | 2013-09-19 11:13:41 -0700 | [diff] [blame] | 611 | |
| 612 | if (NUM_L3_SLICES(dev) > 1) { |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 613 | ret = device_create_bin_file(dev->primary->kdev, |
Ben Widawsky | 35a85ac | 2013-09-19 11:13:41 -0700 | [diff] [blame] | 614 | &dpf_attrs_1); |
| 615 | if (ret) |
| 616 | DRM_ERROR("l3 parity slice 1 setup failed\n"); |
| 617 | } |
Daniel Vetter | 112abd2 | 2012-05-31 14:57:43 +0200 | [diff] [blame] | 618 | } |
Ben Widawsky | df6eedc | 2012-09-07 19:43:40 -0700 | [diff] [blame] | 619 | |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 620 | ret = 0; |
| 621 | if (IS_VALLEYVIEW(dev)) |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 622 | ret = sysfs_create_files(&dev->primary->kdev->kobj, vlv_attrs); |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 623 | else if (INTEL_INFO(dev)->gen >= 6) |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 624 | ret = sysfs_create_files(&dev->primary->kdev->kobj, gen6_attrs); |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 625 | if (ret) |
| 626 | DRM_ERROR("RPS sysfs setup failed\n"); |
Mika Kuoppala | ef86ddc | 2013-06-06 17:38:54 +0300 | [diff] [blame] | 627 | |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 628 | ret = sysfs_create_bin_file(&dev->primary->kdev->kobj, |
Mika Kuoppala | ef86ddc | 2013-06-06 17:38:54 +0300 | [diff] [blame] | 629 | &error_state_attr); |
| 630 | if (ret) |
| 631 | DRM_ERROR("error_state sysfs setup failed\n"); |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 632 | } |
| 633 | |
| 634 | void i915_teardown_sysfs(struct drm_device *dev) |
| 635 | { |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 636 | sysfs_remove_bin_file(&dev->primary->kdev->kobj, &error_state_attr); |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 637 | if (IS_VALLEYVIEW(dev)) |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 638 | sysfs_remove_files(&dev->primary->kdev->kobj, vlv_attrs); |
Chris Wilson | 97e4eed | 2013-08-26 16:18:54 +0100 | [diff] [blame] | 639 | else |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 640 | sysfs_remove_files(&dev->primary->kdev->kobj, gen6_attrs); |
| 641 | device_remove_bin_file(dev->primary->kdev, &dpf_attrs_1); |
| 642 | device_remove_bin_file(dev->primary->kdev, &dpf_attrs); |
Ben Widawsky | 853c70e | 2012-09-19 10:50:19 -0700 | [diff] [blame] | 643 | #ifdef CONFIG_PM |
Dave Airlie | 5bdebb1 | 2013-10-11 14:07:25 +1000 | [diff] [blame] | 644 | sysfs_unmerge_group(&dev->primary->kdev->kobj, &rc6_attr_group); |
Rodrigo Vivi | 58abf1d | 2014-10-07 07:06:50 -0700 | [diff] [blame] | 645 | sysfs_unmerge_group(&dev->primary->kdev->kobj, &rc6p_attr_group); |
Ben Widawsky | 853c70e | 2012-09-19 10:50:19 -0700 | [diff] [blame] | 646 | #endif |
Ben Widawsky | 0136db58 | 2012-04-10 21:17:01 -0700 | [diff] [blame] | 647 | } |