diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_sysfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_sysfs.c | 220 |
1 files changed, 199 insertions, 21 deletions
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 7631807a278..903eebd2117 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -46,32 +46,32 @@ static u32 calc_residency(struct drm_device *dev, const u32 reg) } static ssize_t -show_rc6_mask(struct device *dev, struct device_attribute *attr, char *buf) +show_rc6_mask(struct device *kdev, struct device_attribute *attr, char *buf) { - struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev); + struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev); return snprintf(buf, PAGE_SIZE, "%x", intel_enable_rc6(dminor->dev)); } static ssize_t -show_rc6_ms(struct device *dev, struct device_attribute *attr, char *buf) +show_rc6_ms(struct device *kdev, struct device_attribute *attr, char *buf) { - struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev); + struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev); u32 rc6_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6); return snprintf(buf, PAGE_SIZE, "%u", rc6_residency); } static ssize_t -show_rc6p_ms(struct device *dev, struct device_attribute *attr, char *buf) +show_rc6p_ms(struct device *kdev, struct device_attribute *attr, char *buf) { - struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev); + struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev); u32 rc6p_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6p); return snprintf(buf, PAGE_SIZE, "%u", rc6p_residency); } static ssize_t -show_rc6pp_ms(struct device *dev, struct device_attribute *attr, char *buf) +show_rc6pp_ms(struct device *kdev, struct device_attribute *attr, char *buf) { - struct drm_minor *dminor = container_of(dev, struct drm_minor, kdev); + struct drm_minor *dminor = container_of(kdev, struct drm_minor, kdev); u32 rc6pp_residency = calc_residency(dminor->dev, GEN6_GT_GFX_RC6pp); return snprintf(buf, PAGE_SIZE, "%u", rc6pp_residency); } @@ -93,6 +93,7 @@ static struct attribute_group rc6_attr_group = { .name = power_group_name, .attrs = rc6_attrs }; +#endif static int l3_access_valid(struct drm_device *dev, loff_t offset) { @@ -202,37 +203,214 @@ static struct bin_attribute dpf_attrs = { .mmap = NULL }; +static ssize_t gt_cur_freq_mhz_show(struct device *kdev, + struct device_attribute *attr, char *buf) +{ + struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); + struct drm_device *dev = minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + int ret; + + ret = i915_mutex_lock_interruptible(dev); + if (ret) + return ret; + + ret = dev_priv->rps.cur_delay * GT_FREQUENCY_MULTIPLIER; + mutex_unlock(&dev->struct_mutex); + + return snprintf(buf, PAGE_SIZE, "%d", ret); +} + +static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) +{ + struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); + struct drm_device *dev = minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + int ret; + + ret = i915_mutex_lock_interruptible(dev); + if (ret) + return ret; + + ret = dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER; + mutex_unlock(&dev->struct_mutex); + + return snprintf(buf, PAGE_SIZE, "%d", ret); +} + +static ssize_t gt_max_freq_mhz_store(struct device *kdev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); + struct drm_device *dev = minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + u32 val, rp_state_cap, hw_max, hw_min; + ssize_t ret; + + ret = kstrtou32(buf, 0, &val); + if (ret) + return ret; + + val /= GT_FREQUENCY_MULTIPLIER; + + ret = mutex_lock_interruptible(&dev->struct_mutex); + if (ret) + return ret; + + rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); + hw_max = (rp_state_cap & 0xff); + hw_min = ((rp_state_cap & 0xff0000) >> 16); + + if (val < hw_min || val > hw_max || val < dev_priv->rps.min_delay) { + mutex_unlock(&dev->struct_mutex); + return -EINVAL; + } + + if (dev_priv->rps.cur_delay > val) + gen6_set_rps(dev_priv->dev, val); + + dev_priv->rps.max_delay = val; + + mutex_unlock(&dev->struct_mutex); + + return count; +} + +static ssize_t gt_min_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) +{ + struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); + struct drm_device *dev = minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + int ret; + + ret = i915_mutex_lock_interruptible(dev); + if (ret) + return ret; + + ret = dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER; + mutex_unlock(&dev->struct_mutex); + + return snprintf(buf, PAGE_SIZE, "%d", ret); +} + +static ssize_t gt_min_freq_mhz_store(struct device *kdev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); + struct drm_device *dev = minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + u32 val, rp_state_cap, hw_max, hw_min; + ssize_t ret; + + ret = kstrtou32(buf, 0, &val); + if (ret) + return ret; + + val /= GT_FREQUENCY_MULTIPLIER; + + ret = mutex_lock_interruptible(&dev->struct_mutex); + if (ret) + return ret; + + rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); + hw_max = (rp_state_cap & 0xff); + hw_min = ((rp_state_cap & 0xff0000) >> 16); + + if (val < hw_min || val > hw_max || val > dev_priv->rps.max_delay) { + mutex_unlock(&dev->struct_mutex); + return -EINVAL; + } + + if (dev_priv->rps.cur_delay < val) + gen6_set_rps(dev_priv->dev, val); + + dev_priv->rps.min_delay = val; + + mutex_unlock(&dev->struct_mutex); + + return count; + +} + +static DEVICE_ATTR(gt_cur_freq_mhz, S_IRUGO, gt_cur_freq_mhz_show, NULL); +static DEVICE_ATTR(gt_max_freq_mhz, S_IRUGO | S_IWUSR, gt_max_freq_mhz_show, gt_max_freq_mhz_store); +static DEVICE_ATTR(gt_min_freq_mhz, S_IRUGO | S_IWUSR, gt_min_freq_mhz_show, gt_min_freq_mhz_store); + + +static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf); +static DEVICE_ATTR(gt_RP0_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); +static DEVICE_ATTR(gt_RP1_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); +static DEVICE_ATTR(gt_RPn_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL); + +/* For now we have a static number of RP states */ +static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) +{ + struct drm_minor *minor = container_of(kdev, struct drm_minor, kdev); + struct drm_device *dev = minor->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + u32 val, rp_state_cap; + ssize_t ret; + + ret = mutex_lock_interruptible(&dev->struct_mutex); + if (ret) + return ret; + rp_state_cap = I915_READ(GEN6_RP_STATE_CAP); + mutex_unlock(&dev->struct_mutex); + + if (attr == &dev_attr_gt_RP0_freq_mhz) { + val = ((rp_state_cap & 0x0000ff) >> 0) * GT_FREQUENCY_MULTIPLIER; + } else if (attr == &dev_attr_gt_RP1_freq_mhz) { + val = ((rp_state_cap & 0x00ff00) >> 8) * GT_FREQUENCY_MULTIPLIER; + } else if (attr == &dev_attr_gt_RPn_freq_mhz) { + val = ((rp_state_cap & 0xff0000) >> 16) * GT_FREQUENCY_MULTIPLIER; + } else { + BUG(); + } + return snprintf(buf, PAGE_SIZE, "%d", val); +} + +static const struct attribute *gen6_attrs[] = { + &dev_attr_gt_cur_freq_mhz.attr, + &dev_attr_gt_max_freq_mhz.attr, + &dev_attr_gt_min_freq_mhz.attr, + &dev_attr_gt_RP0_freq_mhz.attr, + &dev_attr_gt_RP1_freq_mhz.attr, + &dev_attr_gt_RPn_freq_mhz.attr, + NULL, +}; + void i915_setup_sysfs(struct drm_device *dev) { int ret; +#ifdef CONFIG_PM if (INTEL_INFO(dev)->gen >= 6) { ret = sysfs_merge_group(&dev->primary->kdev.kobj, &rc6_attr_group); if (ret) DRM_ERROR("RC6 residency sysfs setup failed\n"); } - - if (IS_IVYBRIDGE(dev)) { +#endif + if (HAS_L3_GPU_CACHE(dev)) { ret = device_create_bin_file(&dev->primary->kdev, &dpf_attrs); if (ret) DRM_ERROR("l3 parity sysfs setup failed\n"); } + + if (INTEL_INFO(dev)->gen >= 6) { + ret = sysfs_create_files(&dev->primary->kdev.kobj, gen6_attrs); + if (ret) + DRM_ERROR("gen6 sysfs setup failed\n"); + } } void i915_teardown_sysfs(struct drm_device *dev) { + sysfs_remove_files(&dev->primary->kdev.kobj, gen6_attrs); device_remove_bin_file(&dev->primary->kdev, &dpf_attrs); +#ifdef CONFIG_PM sysfs_unmerge_group(&dev->primary->kdev.kobj, &rc6_attr_group); +#endif } -#else -void i915_setup_sysfs(struct drm_device *dev) -{ - return; -} - -void i915_teardown_sysfs(struct drm_device *dev) -{ - return; -} -#endif /* CONFIG_PM */ |