diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_sysfs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_sysfs.c | 579 |
1 files changed, 69 insertions, 510 deletions
diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index c0cfe7ae2ba5..70e0d8615160 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -29,122 +29,29 @@ #include <linux/module.h> #include <linux/stat.h> #include <linux/sysfs.h> -#include "intel_drv.h" -#include "i915_drv.h" - -static inline struct drm_i915_private *kdev_minor_to_i915(struct device *kdev) -{ - struct drm_minor *minor = dev_get_drvdata(kdev); - return to_i915(minor->dev); -} - -#ifdef CONFIG_PM -static u32 calc_residency(struct drm_i915_private *dev_priv, - i915_reg_t reg) -{ - u64 res; - - intel_runtime_pm_get(dev_priv); - res = intel_rc6_residency_us(dev_priv, reg); - intel_runtime_pm_put(dev_priv); - - return DIV_ROUND_CLOSEST_ULL(res, 1000); -} - -static ssize_t -show_rc6_mask(struct device *kdev, struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - unsigned int mask; - - mask = 0; - if (HAS_RC6(dev_priv)) - mask |= BIT(0); - if (HAS_RC6p(dev_priv)) - mask |= BIT(1); - if (HAS_RC6pp(dev_priv)) - mask |= BIT(2); - - return snprintf(buf, PAGE_SIZE, "%x\n", mask); -} -static ssize_t -show_rc6_ms(struct device *kdev, struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - u32 rc6_residency = calc_residency(dev_priv, GEN6_GT_GFX_RC6); - return snprintf(buf, PAGE_SIZE, "%u\n", rc6_residency); -} +#include <drm/drm_print.h> -static ssize_t -show_rc6p_ms(struct device *kdev, struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - u32 rc6p_residency = calc_residency(dev_priv, GEN6_GT_GFX_RC6p); - return snprintf(buf, PAGE_SIZE, "%u\n", rc6p_residency); -} +#include "gt/intel_gt_regs.h" +#include "gt/intel_rc6.h" +#include "gt/intel_rps.h" +#include "gt/sysfs_engines.h" -static ssize_t -show_rc6pp_ms(struct device *kdev, struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - u32 rc6pp_residency = calc_residency(dev_priv, GEN6_GT_GFX_RC6pp); - return snprintf(buf, PAGE_SIZE, "%u\n", rc6pp_residency); -} +#include "i915_drv.h" +#include "i915_sysfs.h" -static ssize_t -show_media_rc6_ms(struct device *kdev, struct device_attribute *attr, char *buf) +struct drm_i915_private *kdev_minor_to_i915(struct device *kdev) { - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - u32 rc6_residency = calc_residency(dev_priv, VLV_GT_MEDIA_RC6); - return snprintf(buf, PAGE_SIZE, "%u\n", rc6_residency); + struct drm_minor *minor = dev_get_drvdata(kdev); + return to_i915(minor->dev); } -static DEVICE_ATTR(rc6_enable, S_IRUGO, show_rc6_mask, NULL); -static DEVICE_ATTR(rc6_residency_ms, S_IRUGO, show_rc6_ms, NULL); -static DEVICE_ATTR(rc6p_residency_ms, S_IRUGO, show_rc6p_ms, NULL); -static DEVICE_ATTR(rc6pp_residency_ms, S_IRUGO, show_rc6pp_ms, NULL); -static DEVICE_ATTR(media_rc6_residency_ms, S_IRUGO, show_media_rc6_ms, NULL); - -static struct attribute *rc6_attrs[] = { - &dev_attr_rc6_enable.attr, - &dev_attr_rc6_residency_ms.attr, - NULL -}; - -static const struct attribute_group rc6_attr_group = { - .name = power_group_name, - .attrs = rc6_attrs -}; - -static struct attribute *rc6p_attrs[] = { - &dev_attr_rc6p_residency_ms.attr, - &dev_attr_rc6pp_residency_ms.attr, - NULL -}; - -static const struct attribute_group rc6p_attr_group = { - .name = power_group_name, - .attrs = rc6p_attrs -}; - -static struct attribute *media_rc6_attrs[] = { - &dev_attr_media_rc6_residency_ms.attr, - NULL -}; - -static const struct attribute_group media_rc6_attr_group = { - .name = power_group_name, - .attrs = media_rc6_attrs -}; -#endif - -static int l3_access_valid(struct drm_i915_private *dev_priv, loff_t offset) +static int l3_access_valid(struct drm_i915_private *i915, loff_t offset) { - if (!HAS_L3_DPF(dev_priv)) + if (!HAS_L3_DPF(i915)) return -EPERM; - if (offset % 4 != 0) + if (!IS_ALIGNED(offset, sizeof(u32))) return -EINVAL; if (offset >= GEN7_L3LOG_SIZE) @@ -155,85 +62,81 @@ static int l3_access_valid(struct drm_i915_private *dev_priv, loff_t offset) static ssize_t i915_l3_read(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, char *buf, + const struct bin_attribute *attr, char *buf, loff_t offset, size_t count) { struct device *kdev = kobj_to_dev(kobj); - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - struct drm_device *dev = &dev_priv->drm; + struct drm_i915_private *i915 = kdev_minor_to_i915(kdev); int slice = (int)(uintptr_t)attr->private; int ret; - count = round_down(count, 4); - - ret = l3_access_valid(dev_priv, offset); + ret = l3_access_valid(i915, offset); if (ret) return ret; + count = round_down(count, sizeof(u32)); count = min_t(size_t, GEN7_L3LOG_SIZE - offset, count); + memset(buf, 0, count); - ret = i915_mutex_lock_interruptible(dev); - if (ret) - return ret; - - if (dev_priv->l3_parity.remap_info[slice]) + spin_lock(&i915->gem.contexts.lock); + if (i915->l3_parity.remap_info[slice]) memcpy(buf, - dev_priv->l3_parity.remap_info[slice] + (offset/4), + i915->l3_parity.remap_info[slice] + offset / sizeof(u32), count); - else - memset(buf, 0, count); - - mutex_unlock(&dev->struct_mutex); + spin_unlock(&i915->gem.contexts.lock); return count; } static ssize_t i915_l3_write(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, char *buf, + const struct bin_attribute *attr, char *buf, loff_t offset, size_t count) { struct device *kdev = kobj_to_dev(kobj); - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - struct drm_device *dev = &dev_priv->drm; - struct i915_gem_context *ctx; + struct drm_i915_private *i915 = kdev_minor_to_i915(kdev); int slice = (int)(uintptr_t)attr->private; - u32 **remap_info; + u32 *remap_info, *freeme = NULL; + struct i915_gem_context *ctx; int ret; - ret = l3_access_valid(dev_priv, offset); + ret = l3_access_valid(i915, offset); if (ret) return ret; - ret = i915_mutex_lock_interruptible(dev); - if (ret) - return ret; + if (count < sizeof(u32)) + return -EINVAL; - remap_info = &dev_priv->l3_parity.remap_info[slice]; - if (!*remap_info) { - *remap_info = kzalloc(GEN7_L3LOG_SIZE, GFP_KERNEL); - if (!*remap_info) { - ret = -ENOMEM; - goto out; - } + remap_info = kzalloc(GEN7_L3LOG_SIZE, GFP_KERNEL); + if (!remap_info) + return -ENOMEM; + + spin_lock(&i915->gem.contexts.lock); + + if (i915->l3_parity.remap_info[slice]) { + freeme = remap_info; + remap_info = i915->l3_parity.remap_info[slice]; + } else { + i915->l3_parity.remap_info[slice] = remap_info; } - /* TODO: Ideally we really want a GPU reset here to make sure errors - * aren't propagated. Since I cannot find a stable way to reset the GPU - * at this point it is left as a TODO. - */ - memcpy(*remap_info + (offset/4), buf, count); + count = round_down(count, sizeof(u32)); + memcpy(remap_info + offset / sizeof(u32), buf, count); /* NB: We defer the remapping until we switch to the context */ - list_for_each_entry(ctx, &dev_priv->contexts.list, link) - ctx->remap_slice |= (1<<slice); + list_for_each_entry(ctx, &i915->gem.contexts.list, link) + ctx->remap_slice |= BIT(slice); - ret = count; + spin_unlock(&i915->gem.contexts.lock); + kfree(freeme); -out: - mutex_unlock(&dev->struct_mutex); + /* + * TODO: Ideally we really want a GPU reset here to make sure errors + * aren't propagated. Since I cannot find a stable way to reset the GPU + * at this point it is left as a TODO. + */ - return ret; + return count; } static const struct bin_attribute dpf_attrs = { @@ -254,388 +157,44 @@ static const struct bin_attribute dpf_attrs_1 = { .private = (void *)1 }; -static ssize_t gt_act_freq_mhz_show(struct device *kdev, - struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - int ret; - - intel_runtime_pm_get(dev_priv); - - mutex_lock(&dev_priv->pcu_lock); - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { - u32 freq; - freq = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS); - ret = intel_gpu_freq(dev_priv, (freq >> 8) & 0xff); - } else { - ret = intel_gpu_freq(dev_priv, - intel_get_cagf(dev_priv, - I915_READ(GEN6_RPSTAT1))); - } - mutex_unlock(&dev_priv->pcu_lock); - - intel_runtime_pm_put(dev_priv); - - return snprintf(buf, PAGE_SIZE, "%d\n", ret); -} - -static ssize_t gt_cur_freq_mhz_show(struct device *kdev, - struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_gpu_freq(dev_priv, - dev_priv->gt_pm.rps.cur_freq)); -} - -static ssize_t gt_boost_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_gpu_freq(dev_priv, - dev_priv->gt_pm.rps.boost_freq)); -} - -static ssize_t gt_boost_freq_mhz_store(struct device *kdev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &dev_priv->gt_pm.rps; - bool boost = false; - ssize_t ret; - u32 val; - - ret = kstrtou32(buf, 0, &val); - if (ret) - return ret; - - /* Validate against (static) hardware limits */ - val = intel_freq_opcode(dev_priv, val); - if (val < rps->min_freq || val > rps->max_freq) - return -EINVAL; - - mutex_lock(&dev_priv->pcu_lock); - if (val != rps->boost_freq) { - rps->boost_freq = val; - boost = atomic_read(&rps->num_waiters); - } - mutex_unlock(&dev_priv->pcu_lock); - if (boost) - schedule_work(&rps->work); - - return count; -} - -static ssize_t vlv_rpe_freq_mhz_show(struct device *kdev, - struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_gpu_freq(dev_priv, - dev_priv->gt_pm.rps.efficient_freq)); -} - -static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_gpu_freq(dev_priv, - dev_priv->gt_pm.rps.max_freq_softlimit)); -} - -static ssize_t gt_max_freq_mhz_store(struct device *kdev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &dev_priv->gt_pm.rps; - u32 val; - ssize_t ret; - - ret = kstrtou32(buf, 0, &val); - if (ret) - return ret; - - intel_runtime_pm_get(dev_priv); - - mutex_lock(&dev_priv->pcu_lock); - - val = intel_freq_opcode(dev_priv, val); - - if (val < rps->min_freq || - val > rps->max_freq || - val < rps->min_freq_softlimit) { - mutex_unlock(&dev_priv->pcu_lock); - intel_runtime_pm_put(dev_priv); - return -EINVAL; - } - - if (val > rps->rp0_freq) - DRM_DEBUG("User requested overclocking to %d\n", - intel_gpu_freq(dev_priv, val)); - - rps->max_freq_softlimit = val; - - val = clamp_t(int, rps->cur_freq, - rps->min_freq_softlimit, - rps->max_freq_softlimit); - - /* We still need *_set_rps to process the new max_delay and - * update the interrupt limits and PMINTRMSK even though - * frequency request may be unchanged. */ - ret = intel_set_rps(dev_priv, val); - - mutex_unlock(&dev_priv->pcu_lock); - - intel_runtime_pm_put(dev_priv); - - return ret ?: count; -} - -static ssize_t gt_min_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_gpu_freq(dev_priv, - dev_priv->gt_pm.rps.min_freq_softlimit)); -} - -static ssize_t gt_min_freq_mhz_store(struct device *kdev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &dev_priv->gt_pm.rps; - u32 val; - ssize_t ret; - - ret = kstrtou32(buf, 0, &val); - if (ret) - return ret; - - intel_runtime_pm_get(dev_priv); - - mutex_lock(&dev_priv->pcu_lock); - - val = intel_freq_opcode(dev_priv, val); - - if (val < rps->min_freq || - val > rps->max_freq || - val > rps->max_freq_softlimit) { - mutex_unlock(&dev_priv->pcu_lock); - intel_runtime_pm_put(dev_priv); - return -EINVAL; - } - - rps->min_freq_softlimit = val; - - val = clamp_t(int, rps->cur_freq, - rps->min_freq_softlimit, - rps->max_freq_softlimit); - - /* We still need *_set_rps to process the new min_delay and - * update the interrupt limits and PMINTRMSK even though - * frequency request may be unchanged. */ - ret = intel_set_rps(dev_priv, val); - - mutex_unlock(&dev_priv->pcu_lock); - - intel_runtime_pm_put(dev_priv); - - return ret ?: count; -} - -static DEVICE_ATTR_RO(gt_act_freq_mhz); -static DEVICE_ATTR_RO(gt_cur_freq_mhz); -static DEVICE_ATTR_RW(gt_boost_freq_mhz); -static DEVICE_ATTR_RW(gt_max_freq_mhz); -static DEVICE_ATTR_RW(gt_min_freq_mhz); - -static DEVICE_ATTR_RO(vlv_rpe_freq_mhz); - -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_i915_private *dev_priv = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &dev_priv->gt_pm.rps; - u32 val; - - if (attr == &dev_attr_gt_RP0_freq_mhz) - val = intel_gpu_freq(dev_priv, rps->rp0_freq); - else if (attr == &dev_attr_gt_RP1_freq_mhz) - val = intel_gpu_freq(dev_priv, rps->rp1_freq); - else if (attr == &dev_attr_gt_RPn_freq_mhz) - val = intel_gpu_freq(dev_priv, rps->min_freq); - else - BUG(); - - return snprintf(buf, PAGE_SIZE, "%d\n", val); -} - -static const struct attribute * const gen6_attrs[] = { - &dev_attr_gt_act_freq_mhz.attr, - &dev_attr_gt_cur_freq_mhz.attr, - &dev_attr_gt_boost_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, -}; - -static const struct attribute * const vlv_attrs[] = { - &dev_attr_gt_act_freq_mhz.attr, - &dev_attr_gt_cur_freq_mhz.attr, - &dev_attr_gt_boost_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, - &dev_attr_vlv_rpe_freq_mhz.attr, - NULL, -}; - -#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR) - -static ssize_t error_state_read(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, char *buf, - loff_t off, size_t count) -{ - - struct device *kdev = kobj_to_dev(kobj); - struct drm_i915_private *i915 = kdev_minor_to_i915(kdev); - struct i915_gpu_state *gpu; - ssize_t ret; - - gpu = i915_first_error_state(i915); - if (IS_ERR(gpu)) { - ret = PTR_ERR(gpu); - } else if (gpu) { - ret = i915_gpu_state_copy_to_buffer(gpu, buf, off, count); - i915_gpu_state_put(gpu); - } else { - const char *str = "No error state collected\n"; - size_t len = strlen(str); - - ret = min_t(size_t, count, len - off); - memcpy(buf, str + off, ret); - } - - return ret; -} - -static ssize_t error_state_write(struct file *file, struct kobject *kobj, - struct bin_attribute *attr, char *buf, - loff_t off, size_t count) -{ - struct device *kdev = kobj_to_dev(kobj); - struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev); - - DRM_DEBUG_DRIVER("Resetting error state\n"); - i915_reset_error_state(dev_priv); - - return count; -} - -static const struct bin_attribute error_state_attr = { - .attr.name = "error", - .attr.mode = S_IRUSR | S_IWUSR, - .size = 0, - .read = error_state_read, - .write = error_state_write, -}; - -static void i915_setup_error_capture(struct device *kdev) -{ - if (sysfs_create_bin_file(&kdev->kobj, &error_state_attr)) - DRM_ERROR("error_state sysfs setup failed\n"); -} - -static void i915_teardown_error_capture(struct device *kdev) -{ - sysfs_remove_bin_file(&kdev->kobj, &error_state_attr); -} -#else -static void i915_setup_error_capture(struct device *kdev) {} -static void i915_teardown_error_capture(struct device *kdev) {} -#endif - void i915_setup_sysfs(struct drm_i915_private *dev_priv) { struct device *kdev = dev_priv->drm.primary->kdev; int ret; -#ifdef CONFIG_PM - if (HAS_RC6(dev_priv)) { - ret = sysfs_merge_group(&kdev->kobj, - &rc6_attr_group); - if (ret) - DRM_ERROR("RC6 residency sysfs setup failed\n"); - } - if (HAS_RC6p(dev_priv)) { - ret = sysfs_merge_group(&kdev->kobj, - &rc6p_attr_group); - if (ret) - DRM_ERROR("RC6p residency sysfs setup failed\n"); - } - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { - ret = sysfs_merge_group(&kdev->kobj, - &media_rc6_attr_group); - if (ret) - DRM_ERROR("Media RC6 residency sysfs setup failed\n"); - } -#endif if (HAS_L3_DPF(dev_priv)) { ret = device_create_bin_file(kdev, &dpf_attrs); if (ret) - DRM_ERROR("l3 parity sysfs setup failed\n"); + drm_err(&dev_priv->drm, + "l3 parity sysfs setup failed\n"); if (NUM_L3_SLICES(dev_priv) > 1) { ret = device_create_bin_file(kdev, &dpf_attrs_1); if (ret) - DRM_ERROR("l3 parity slice 1 setup failed\n"); + drm_err(&dev_priv->drm, + "l3 parity slice 1 setup failed\n"); } } - ret = 0; - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) - ret = sysfs_create_files(&kdev->kobj, vlv_attrs); - else if (INTEL_GEN(dev_priv) >= 6) - ret = sysfs_create_files(&kdev->kobj, gen6_attrs); - if (ret) - DRM_ERROR("RPS sysfs setup failed\n"); + dev_priv->sysfs_gt = kobject_create_and_add("gt", &kdev->kobj); + if (!dev_priv->sysfs_gt) + drm_warn(&dev_priv->drm, + "failed to register GT sysfs directory\n"); + + i915_gpu_error_sysfs_setup(dev_priv); - i915_setup_error_capture(kdev); + intel_engines_add_sysfs(dev_priv); } void i915_teardown_sysfs(struct drm_i915_private *dev_priv) { struct device *kdev = dev_priv->drm.primary->kdev; - i915_teardown_error_capture(kdev); - - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) - sysfs_remove_files(&kdev->kobj, vlv_attrs); - else - sysfs_remove_files(&kdev->kobj, gen6_attrs); - device_remove_bin_file(kdev, &dpf_attrs_1); - device_remove_bin_file(kdev, &dpf_attrs); -#ifdef CONFIG_PM - sysfs_unmerge_group(&kdev->kobj, &rc6_attr_group); - sysfs_unmerge_group(&kdev->kobj, &rc6p_attr_group); -#endif + i915_gpu_error_sysfs_teardown(dev_priv); + + device_remove_bin_file(kdev, &dpf_attrs_1); + device_remove_bin_file(kdev, &dpf_attrs); + + kobject_put(dev_priv->sysfs_gt); } |
