From patchwork Wed Feb 19 19:30:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Andi Shyti X-Patchwork-Id: 11392347 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 98717924 for ; Wed, 19 Feb 2020 19:30:37 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7F08B208E4 for ; Wed, 19 Feb 2020 19:30:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7F08B208E4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 473836EC8C; Wed, 19 Feb 2020 19:30:35 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5B2A06EC8C for ; Wed, 19 Feb 2020 19:30:34 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Feb 2020 11:30:30 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,461,1574150400"; d="scan'208";a="315489171" Received: from aquilante.fi.intel.com (HELO teofilatto.example.org) ([10.237.72.158]) by orsmga001.jf.intel.com with ESMTP; 19 Feb 2020 11:30:27 -0800 From: Andi Shyti To: Intel GFX Date: Wed, 19 Feb 2020 21:30:20 +0200 Message-Id: <20200219193020.17673-1-andi.shyti@intel.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200219190223.16972-1-andi.shyti@intel.com> References: <20200219190223.16972-1-andi.shyti@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v5] drm/i915/gt: make a gt sysfs group and move power management files X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" The GT has its own properties and in sysfs they should be grouped in the 'gt/' directory. Create the 'gt/' directory in sysfs and move the power management related files. The new interfaces are: gt/gt_act_freq_mhz gt/gt_boost_freq_mhz gt/gt_cur_freq_mhz gt/gt_info gt/gt_max_freq_mhz gt/gt_min_freq_mhz gt/gt_RP0_freq_mhz gt/gt_RP1_freq_mhz gt/gt_RPn_freq_mhz gt/rc6_enable gt/rc6_residency_ms The once in the root directory will be marked as deprecated, if accessed a warning message is printed. Signed-off-by: Andi Shyti --- v4 -> v5: - removed spurious ghost 'vvv' file that was never meant to be there... sorry for spamming. v3 -> v4: - fixed Tvrtko's comments: - some renaming - some clumsy unbalanced kobject_put/get - the warning print is more descriptive and printed with limited rate - TODO: drm_print doesn't have a drm_warn_unlimited, to be added v2 -> v3: - fix some cleanups that I forgot in the previous patch - fix reference pointers to the gt structure - and many other small changes here and there. v1 -> v2: - keep the existing files as they are - use "intel_gt_*" as prefix instead of "sysfs_*" drivers/gpu/drm/i915/Makefile | 4 +- drivers/gpu/drm/i915/gt/intel_gt.c | 3 + drivers/gpu/drm/i915/gt/intel_gt_types.h | 1 + drivers/gpu/drm/i915/gt/sysfs_gt.c | 79 +++++ drivers/gpu/drm/i915/gt/sysfs_gt.h | 22 ++ drivers/gpu/drm/i915/gt/sysfs_gt_pm.c | 432 +++++++++++++++++++++++ drivers/gpu/drm/i915/gt/sysfs_gt_pm.h | 17 + drivers/gpu/drm/i915/i915_sysfs.c | 375 +------------------- drivers/gpu/drm/i915/i915_sysfs.h | 3 + 9 files changed, 561 insertions(+), 375 deletions(-) create mode 100644 drivers/gpu/drm/i915/gt/sysfs_gt.c create mode 100644 drivers/gpu/drm/i915/gt/sysfs_gt.h create mode 100644 drivers/gpu/drm/i915/gt/sysfs_gt_pm.c create mode 100644 drivers/gpu/drm/i915/gt/sysfs_gt_pm.h diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index b314d44ded5e..ff9e17c97dc2 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -107,7 +107,9 @@ gt-y += \ gt/intel_rps.o \ gt/intel_sseu.o \ gt/intel_timeline.o \ - gt/intel_workarounds.o + gt/intel_workarounds.o \ + gt/sysfs_gt.o \ + gt/sysfs_gt_pm.o # autogenerated null render state gt-y += \ gt/gen6_renderstate.o \ diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index f1f1b306e0af..e794d05d69a1 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -15,6 +15,7 @@ #include "intel_rps.h" #include "intel_uncore.h" #include "intel_pm.h" +#include "sysfs_gt.h" void intel_gt_init_early(struct intel_gt *gt, struct drm_i915_private *i915) { @@ -321,6 +322,7 @@ void intel_gt_driver_register(struct intel_gt *gt) intel_rps_driver_register(>->rps); debugfs_gt_register(gt); + intel_gt_sysfs_register(gt); } static int intel_gt_init_scratch(struct intel_gt *gt, unsigned int size) @@ -641,6 +643,7 @@ void intel_gt_driver_remove(struct intel_gt *gt) void intel_gt_driver_unregister(struct intel_gt *gt) { + intel_gt_sysfs_unregister(gt); intel_rps_driver_unregister(>->rps); } diff --git a/drivers/gpu/drm/i915/gt/intel_gt_types.h b/drivers/gpu/drm/i915/gt/intel_gt_types.h index 96890dd12b5f..7f0b4f8d9e28 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_types.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_types.h @@ -32,6 +32,7 @@ struct intel_gt { struct drm_i915_private *i915; struct intel_uncore *uncore; struct i915_ggtt *ggtt; + struct kobject sysfs_root; struct intel_uc uc; diff --git a/drivers/gpu/drm/i915/gt/sysfs_gt.c b/drivers/gpu/drm/i915/gt/sysfs_gt.c new file mode 100644 index 000000000000..9335a92d5248 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/sysfs_gt.c @@ -0,0 +1,79 @@ +// SPDX-License-Identifier: MIT + +/* + * Copyright © 2019 Intel Corporation + */ + +#include +#include +#include +#include + +#include "../i915_drv.h" +#include "intel_gt.h" +#include "intel_gt_types.h" +#include "intel_rc6.h" + +#include "sysfs_gt.h" +#include "sysfs_gt_pm.h" + +static inline struct kobject *gt_get_parent_obj(struct intel_gt *gt) +{ + return >->i915->drm.primary->kdev->kobj; +} + +static ssize_t gt_info_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + return snprintf(buff, PAGE_SIZE, "0\n"); +} + +static DEVICE_ATTR_RO(gt_info); + +static struct kobj_type sysfs_gt_ktype = { + .sysfs_ops = &kobj_sysfs_ops, +}; + +void intel_gt_sysfs_register(struct intel_gt *gt) +{ + struct kobject *parent = kobject_get(gt_get_parent_obj(gt)); + int ret; + + ret = kobject_init_and_add(>->sysfs_root, + &sysfs_gt_ktype, + parent, "gt"); + if (ret) { + drm_err(>->i915->drm, "failed to initialize sysfs file\n"); + kobject_put(>->sysfs_root); + goto parent_files; + } + + ret = sysfs_create_file(>->sysfs_root, &dev_attr_gt_info.attr); + if (ret) + drm_err(>->i915->drm, "failed to create sysfs gt info files\n"); + + intel_gt_sysfs_pm_init(gt, >->sysfs_root); + +parent_files: + /* + * we need to make things right with the + * ABI compatibility. The files were originally + * generated under the parent directory. + */ + intel_gt_sysfs_pm_init(gt, parent); +} + +void intel_gt_sysfs_unregister(struct intel_gt *gt) +{ + struct kobject *parent = gt_get_parent_obj(gt); + + /* + * the name gt tells us wether sysfs_root + * object was initialized properly + */ + if (!strcmp(gt->sysfs_root.name, "gt")) + kobject_put(>->sysfs_root); + + kobject_put(parent); +} diff --git a/drivers/gpu/drm/i915/gt/sysfs_gt.h b/drivers/gpu/drm/i915/gt/sysfs_gt.h new file mode 100644 index 000000000000..2e479aa902e5 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/sysfs_gt.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: MIT */ + +/* + * Copyright © 2019 Intel Corporation + */ + +#ifndef SYSFS_GT_H +#define SYSFS_GT_H + +#include "intel_gt_types.h" + +struct intel_gt; + +static inline struct intel_gt *kobj_to_gt(struct kobject *kobj) +{ + return container_of(kobj, struct intel_gt, sysfs_root); +} + +void intel_gt_sysfs_register(struct intel_gt *gt); +void intel_gt_sysfs_unregister(struct intel_gt *gt); + +#endif /* SYSFS_GT_H */ diff --git a/drivers/gpu/drm/i915/gt/sysfs_gt_pm.c b/drivers/gpu/drm/i915/gt/sysfs_gt_pm.c new file mode 100644 index 000000000000..c548eb851a70 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/sysfs_gt_pm.c @@ -0,0 +1,432 @@ +// SPDX-License-Identifier: MIT + +/* + * Copyright © 2019 Intel Corporation + */ + +#include +#include +#include + +#include "../i915_drv.h" +#include "../i915_sysfs.h" +#include "intel_gt.h" +#include "intel_rc6.h" +#include "intel_rps.h" +#include "sysfs_gt.h" +#include "sysfs_gt_pm.h" + +struct intel_gt *intel_gt_sysfs_get_drvdata(struct device *dev) +{ + struct kobject *kobj = &dev->kobj; + /* + * We are interested at knowing from where the interface + * has been called, whether it's called from gt/ or from + * the parent directory. + * From the interface position it depends also the value of + * the private data. + * If the interface is called from gt/ then private data is + * of the "struct intel_gt *" type, otherwise it's * a + * "struct drm_i915_private *" type. + */ + if (strcmp(dev->kobj.name, "gt")) { + struct drm_i915_private *i915 = kdev_minor_to_i915(dev); + + pr_warn_ratelimited(DEPRECATED + "(%s, %d) trying to access deprecated interface, " + "use the corresponding interface in gt/\n", + current->comm, task_pid_nr(current)); + return &i915->gt; + } + + return kobj_to_gt(kobj); +} + +#ifdef CONFIG_PM +static u32 get_residency(struct intel_gt *gt, i915_reg_t reg) +{ + intel_wakeref_t wakeref; + u64 res = 0; + + with_intel_runtime_pm(gt->uncore->rpm, wakeref) + res = intel_rc6_residency_us(>->rc6, reg); + + return DIV_ROUND_CLOSEST_ULL(res, 1000); +} + +static ssize_t rc6_enable_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + u8 mask = 0; + + if (HAS_RC6(gt->i915)) + mask |= BIT(0); + if (HAS_RC6p(gt->i915)) + mask |= BIT(1); + if (HAS_RC6pp(gt->i915)) + mask |= BIT(2); + + return snprintf(buff, PAGE_SIZE, "%x\n", mask); +} + +static ssize_t rc6_residency_ms_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + u32 rc6_residency = get_residency(gt, GEN6_GT_GFX_RC6); + + return snprintf(buff, PAGE_SIZE, "%u\n", rc6_residency); +} + +static ssize_t rc6p_residency_ms_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + u32 rc6p_residency = get_residency(gt, GEN6_GT_GFX_RC6p); + + return snprintf(buff, PAGE_SIZE, "%u\n", rc6p_residency); +} + +static ssize_t rc6pp_residency_ms_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + u32 rc6pp_residency = get_residency(gt, GEN6_GT_GFX_RC6pp); + + return snprintf(buff, PAGE_SIZE, "%u\n", rc6pp_residency); +} + +static ssize_t media_rc6_residency_ms_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + u32 rc6_residency = get_residency(gt, VLV_GT_MEDIA_RC6); + + return snprintf(buff, PAGE_SIZE, "%u\n", rc6_residency); +} + +static DEVICE_ATTR_RO(rc6_enable); +static DEVICE_ATTR_RO(rc6_residency_ms); +static DEVICE_ATTR_RO(rc6p_residency_ms); +static DEVICE_ATTR_RO(rc6pp_residency_ms); +static DEVICE_ATTR_RO(media_rc6_residency_ms); + +static const struct attribute *rc6_attrs[] = { + &dev_attr_rc6_enable.attr, + &dev_attr_rc6_residency_ms.attr, + NULL +}; + +static const struct attribute *rc6p_attrs[] = { + &dev_attr_rc6p_residency_ms.attr, + &dev_attr_rc6pp_residency_ms.attr, + NULL +}; + +static const struct attribute *media_rc6_attrs[] = { + &dev_attr_media_rc6_residency_ms.attr, + NULL +}; + +static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj) +{ + int ret = 0; + + if (HAS_RC6(gt->i915)) { + ret = sysfs_create_files(kobj, rc6_attrs); + if (ret) + drm_err(>->i915->drm, + "failed to create RC6 sysfs files\n"); + } + + if (HAS_RC6p(gt->i915)) { + ret = sysfs_create_files(kobj, rc6p_attrs); + if (ret) + drm_err(>->i915->drm, + "failed to create RC6p sysfs files\n"); + } + + if (IS_VALLEYVIEW(gt->i915) || IS_CHERRYVIEW(gt->i915)) { + ret = sysfs_create_files(kobj, media_rc6_attrs); + if (ret) + drm_err(>->i915->drm, + "failed to create media RC6 sysfs files\n"); + } +} +#else +static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj) +{ + return 0; +} +#endif /* CONFIG_PM */ + +static ssize_t gt_act_freq_mhz_show(struct device *dev, + struct device_attribute *attr, char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + + return snprintf(buff, PAGE_SIZE, "%d\n", + intel_rps_read_actual_frequency(>->rps)); +} + +static ssize_t gt_cur_freq_mhz_show(struct device *dev, + struct device_attribute *attr, char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + struct intel_rps *rps = >->rps; + + return snprintf(buff, PAGE_SIZE, "%d\n", + intel_gpu_freq(rps, rps->cur_freq)); +} + +static ssize_t gt_boost_freq_mhz_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + struct intel_rps *rps = >->rps; + + return snprintf(buff, PAGE_SIZE, "%d\n", + intel_gpu_freq(rps, rps->boost_freq)); +} + +static ssize_t gt_boost_freq_mhz_store(struct device *dev, + struct device_attribute *attr, + const char *buff, size_t count) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + struct intel_rps *rps = >->rps; + bool boost = false; + ssize_t ret; + u32 val; + + ret = kstrtou32(buff, 0, &val); + if (ret) + return ret; + + /* Validate against (static) hardware limits */ + val = intel_freq_opcode(rps, val); + if (val < rps->min_freq || val > rps->max_freq) + return -EINVAL; + + mutex_lock(&rps->lock); + if (val != rps->boost_freq) { + rps->boost_freq = val; + boost = atomic_read(&rps->num_waiters); + } + mutex_unlock(&rps->lock); + if (boost) + schedule_work(&rps->work); + + return count; +} + +static ssize_t vlv_rpe_freq_mhz_show(struct device *dev, + struct device_attribute *attr, char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + struct intel_rps *rps = >->rps; + + return snprintf(buff, PAGE_SIZE, "%d\n", + intel_gpu_freq(rps, rps->efficient_freq)); +} + +static ssize_t gt_max_freq_mhz_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + struct intel_rps *rps = >->rps; + + return snprintf(buff, PAGE_SIZE, "%d\n", + intel_gpu_freq(rps, rps->max_freq_softlimit)); +} + +static ssize_t gt_max_freq_mhz_store(struct device *dev, + struct device_attribute *attr, + const char *buff, size_t count) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + struct intel_rps *rps = >->rps; + ssize_t ret; + u32 val; + + ret = kstrtou32(buff, 0, &val); + if (ret) + return ret; + + mutex_lock(&rps->lock); + + val = intel_freq_opcode(rps, val); + if (val < rps->min_freq || + val > rps->max_freq || + val < rps->min_freq_softlimit) { + ret = -EINVAL; + goto unlock; + } + + if (val > rps->rp0_freq) + DRM_DEBUG("User requested overclocking to %d\n", + intel_gpu_freq(rps, 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. + */ + intel_rps_set(rps, val); + +unlock: + mutex_unlock(&rps->lock); + + return ret ?: count; +} + +static ssize_t gt_min_freq_mhz_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + struct intel_rps *rps = >->rps; + + return snprintf(buff, PAGE_SIZE, "%d\n", + intel_gpu_freq(rps, rps->min_freq_softlimit)); +} + +static ssize_t gt_min_freq_mhz_store(struct device *dev, + struct device_attribute *attr, + const char *buff, size_t count) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + struct intel_rps *rps = >->rps; + ssize_t ret; + u32 val; + + ret = kstrtou32(buff, 0, &val); + if (ret) + return ret; + + mutex_lock(&rps->lock); + + val = intel_freq_opcode(rps, val); + if (val < rps->min_freq || + val > rps->max_freq || + val > rps->max_freq_softlimit) { + ret = -EINVAL; + goto unlock; + } + + 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. + */ + intel_rps_set(rps, val); + +unlock: + mutex_unlock(&rps->lock); + + 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 *dev, + struct device_attribute *attr, + char *buff); + +static DEVICE_ATTR(gt_RP0_freq_mhz, 0444, gt_rp_mhz_show, NULL); +static DEVICE_ATTR(gt_RP1_freq_mhz, 0444, gt_rp_mhz_show, NULL); +static DEVICE_ATTR(gt_RPn_freq_mhz, 0444, gt_rp_mhz_show, NULL); + +/* For now we have a static number of RP states */ +static ssize_t gt_rp_mhz_show(struct device *dev, + struct device_attribute *attr, + char *buff) +{ + struct intel_gt *gt = intel_gt_sysfs_get_drvdata(dev); + struct intel_rps *rps = >->rps; + u32 val; + + if (attr == &dev_attr_gt_RP0_freq_mhz) + val = intel_gpu_freq(rps, rps->rp0_freq); + else if (attr == &dev_attr_gt_RP1_freq_mhz) + val = intel_gpu_freq(rps, rps->rp1_freq); + else if (attr == &dev_attr_gt_RPn_freq_mhz) + val = intel_gpu_freq(rps, rps->min_freq); + else + BUG(); + + return snprintf(buff, 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, +}; + +static int intel_sysfs_rps_init(struct intel_gt *gt, struct kobject *kobj) +{ + if (IS_VALLEYVIEW(gt->i915) || IS_CHERRYVIEW(gt->i915)) + return sysfs_create_files(kobj, vlv_attrs); + + if (INTEL_GEN(gt->i915) >= 6) + return sysfs_create_files(kobj, gen6_attrs); + + return 0; +} + +void intel_gt_sysfs_pm_init(struct intel_gt *gt, struct kobject *kobj) +{ + int ret; + + intel_sysfs_rc6_init(gt, kobj); + + ret = intel_sysfs_rps_init(gt, kobj); + if (ret) + drm_err(>->i915->drm, "failed to create RPS sysfs files"); +} diff --git a/drivers/gpu/drm/i915/gt/sysfs_gt_pm.h b/drivers/gpu/drm/i915/gt/sysfs_gt_pm.h new file mode 100644 index 000000000000..758d0c3cb998 --- /dev/null +++ b/drivers/gpu/drm/i915/gt/sysfs_gt_pm.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: MIT */ + +/* + * Copyright © 2019 Intel Corporation + */ + +#ifndef SYSFS_RC6_H +#define SYSFS_RC6_H + +#include + +#include "intel_gt_types.h" + +void intel_gt_sysfs_pm_init(struct intel_gt *gt, struct kobject *kobj); +void intel_gt_sysfs_pm_remove(struct intel_gt *gt, struct kobject *kobj); + +#endif /* SYSFS_RC6_H */ diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index c14d762bd652..1298977fc08b 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -38,113 +38,12 @@ #include "intel_pm.h" #include "intel_sideband.h" -static inline struct drm_i915_private *kdev_minor_to_i915(struct device *kdev) +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) -{ - intel_wakeref_t wakeref; - u64 res = 0; - - with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref) - res = intel_rc6_residency_us(&dev_priv->gt.rc6, reg); - - 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); -} - -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); -} - -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); -} - -static ssize_t -show_media_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, VLV_GT_MEDIA_RC6); - return snprintf(buf, PAGE_SIZE, "%u\n", rc6_residency); -} - -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 *i915, loff_t offset) { if (!HAS_L3_DPF(i915)) @@ -256,239 +155,6 @@ 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 *i915 = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &i915->gt.rps; - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_rps_read_actual_frequency(rps)); -} - -static ssize_t gt_cur_freq_mhz_show(struct device *kdev, - struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *i915 = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &i915->gt.rps; - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_gpu_freq(rps, rps->cur_freq)); -} - -static ssize_t gt_boost_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf) -{ - struct drm_i915_private *i915 = kdev_minor_to_i915(kdev); - struct intel_rps *rps = &i915->gt.rps; - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_gpu_freq(rps, 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.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(rps, val); - if (val < rps->min_freq || val > rps->max_freq) - return -EINVAL; - - mutex_lock(&rps->lock); - if (val != rps->boost_freq) { - rps->boost_freq = val; - boost = atomic_read(&rps->num_waiters); - } - mutex_unlock(&rps->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); - struct intel_rps *rps = &dev_priv->gt.rps; - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_gpu_freq(rps, 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); - struct intel_rps *rps = &dev_priv->gt.rps; - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_gpu_freq(rps, 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.rps; - ssize_t ret; - u32 val; - - ret = kstrtou32(buf, 0, &val); - if (ret) - return ret; - - mutex_lock(&rps->lock); - - val = intel_freq_opcode(rps, val); - if (val < rps->min_freq || - val > rps->max_freq || - val < rps->min_freq_softlimit) { - ret = -EINVAL; - goto unlock; - } - - if (val > rps->rp0_freq) - DRM_DEBUG("User requested overclocking to %d\n", - intel_gpu_freq(rps, 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. - */ - intel_rps_set(rps, val); - -unlock: - mutex_unlock(&rps->lock); - - 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); - struct intel_rps *rps = &dev_priv->gt.rps; - - return snprintf(buf, PAGE_SIZE, "%d\n", - intel_gpu_freq(rps, 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.rps; - ssize_t ret; - u32 val; - - ret = kstrtou32(buf, 0, &val); - if (ret) - return ret; - - mutex_lock(&rps->lock); - - val = intel_freq_opcode(rps, val); - if (val < rps->min_freq || - val > rps->max_freq || - val > rps->max_freq_softlimit) { - ret = -EINVAL; - goto unlock; - } - - 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. - */ - intel_rps_set(rps, val); - -unlock: - mutex_unlock(&rps->lock); - - 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.rps; - u32 val; - - if (attr == &dev_attr_gt_RP0_freq_mhz) - val = intel_gpu_freq(rps, rps->rp0_freq); - else if (attr == &dev_attr_gt_RP1_freq_mhz) - val = intel_gpu_freq(rps, rps->rp1_freq); - else if (attr == &dev_attr_gt_RPn_freq_mhz) - val = intel_gpu_freq(rps, 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, @@ -559,29 +225,6 @@ 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_err(&dev_priv->drm, - "RC6 residency sysfs setup failed\n"); - } - if (HAS_RC6p(dev_priv)) { - ret = sysfs_merge_group(&kdev->kobj, - &rc6p_attr_group); - if (ret) - drm_err(&dev_priv->drm, - "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_err(&dev_priv->drm, - "Media RC6 residency sysfs setup failed\n"); - } -#endif if (HAS_L3_DPF(dev_priv)) { ret = device_create_bin_file(kdev, &dpf_attrs); if (ret) @@ -597,14 +240,6 @@ void i915_setup_sysfs(struct drm_i915_private *dev_priv) } } - 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_err(&dev_priv->drm, "RPS sysfs setup failed\n"); - i915_setup_error_capture(kdev); } @@ -614,14 +249,6 @@ void i915_teardown_sysfs(struct drm_i915_private *dev_priv) 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 } diff --git a/drivers/gpu/drm/i915/i915_sysfs.h b/drivers/gpu/drm/i915/i915_sysfs.h index 41afd4366416..ad6114de81c9 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.h +++ b/drivers/gpu/drm/i915/i915_sysfs.h @@ -6,8 +6,11 @@ #ifndef __I915_SYSFS_H__ #define __I915_SYSFS_H__ +#include + struct drm_i915_private; +struct drm_i915_private *kdev_minor_to_i915(struct device *kdev); void i915_setup_sysfs(struct drm_i915_private *i915); void i915_teardown_sysfs(struct drm_i915_private *i915);