From patchwork Mon Sep 20 19:16:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 12506265 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D94BAC43217 for ; Mon, 20 Sep 2021 19:20:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C3D8A61211 for ; Mon, 20 Sep 2021 19:20:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347931AbhITTVs (ORCPT ); Mon, 20 Sep 2021 15:21:48 -0400 Received: from cloudserver094114.home.pl ([79.96.170.134]:58140 "EHLO cloudserver094114.home.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347807AbhITTTp (ORCPT ); Mon, 20 Sep 2021 15:19:45 -0400 Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 3.0.0) id ead8fec41815f117; Mon, 20 Sep 2021 21:18:15 +0200 Received: from kreacher.localnet (unknown [213.134.187.25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id DE5CF66A65F; Mon, 20 Sep 2021 21:18:14 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux PCI Cc: Linux ACPI , LKML , Bjorn Helgaas , Andy Shevchenko , Mika Westerberg , Ferry Toth Subject: [PATCH v2 1/7] PCI: PM: Do not use pci_platform_pm_ops for Intel MID PM Date: Mon, 20 Sep 2021 21:16:59 +0200 Message-ID: <2555295.BddDVKsqQX@kreacher> In-Reply-To: <1800633.tdWV9SEqCh@kreacher> References: <1800633.tdWV9SEqCh@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 213.134.187.25 X-CLIENT-HOSTNAME: 213.134.187.25 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvtddrudeivddgudefgecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdejlefghfeiudektdelkeekvddugfeghffggeejgfeukeejleevgffgvdeluddtnecukfhppedvudefrddufeegrddukeejrddvheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvudefrddufeegrddukeejrddvhedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedprhgtphhtthhopehlihhnuhigqdhptghisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtohephhgvlhhgrggrsheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnughrihihrdhshhgvvhgt hhgvnhhkoheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmihhkrgdrfigvshhtvghrsggvrhhgsehlihhnuhigrdhinhhtvghlrdgtohhmpdhrtghpthhtohepfhhnthhothhhsehgmhgrihhlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=7 Fuz1=7 Fuz2=7 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Rafael J. Wysocki There are only two users of struct pci_platform_pm_ops in the tree, one of which is Intel MID PM and the other one is ACPI. They are mutually exclusive and the MID PM should take precedence when they both are enabled, but whether or not this really is the case hinges on the specific ordering of arch_initcall() calls made by them. The struct pci_platform_pm_ops abstraction is not really necessary for just these two users, but it adds complexity and overhead because of retoplines involved in using all of the function pointers in there. It also makes following the code a bit more difficult than it would be otherwise. Moreover, Intel MID PCI PM doesn't even implement the majority of the function pointers in struct pci_platform_pm_ops in a meaningful way, so switch over the PCI core to calling the relevant MID PM routines, mid_pci_set_power_state() and mid_pci_set_power_state(), directly as needed and drop mid_pci_platform_pm. Signed-off-by: Rafael J. Wysocki --- v1 -> v2: * Instead of dropping the MID PCI PM completely, make the PCI core call a few functions from there directly instead of using struct pci_platform_pm_ops (Andy and Ferry). --- drivers/pci/pci-mid.c | 37 ++++++++----------------------------- drivers/pci/pci.c | 23 ++++++++++++++++++++++- drivers/pci/pci.h | 19 +++++++++++++++++++ 3 files changed, 49 insertions(+), 30 deletions(-) Index: linux-pm/drivers/pci/pci-mid.c =================================================================== --- linux-pm.orig/drivers/pci/pci-mid.c +++ linux-pm/drivers/pci/pci-mid.c @@ -16,45 +16,23 @@ #include "pci.h" -static bool mid_pci_power_manageable(struct pci_dev *dev) +static bool pci_mid_pm_enabled __read_mostly; + +bool pci_use_mid_pm(void) { - return true; + return pci_mid_pm_enabled; } -static int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state) +int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state) { return intel_mid_pci_set_power_state(pdev, state); } -static pci_power_t mid_pci_get_power_state(struct pci_dev *pdev) +pci_power_t mid_pci_get_power_state(struct pci_dev *pdev) { return intel_mid_pci_get_power_state(pdev); } -static pci_power_t mid_pci_choose_state(struct pci_dev *pdev) -{ - return PCI_D3hot; -} - -static int mid_pci_wakeup(struct pci_dev *dev, bool enable) -{ - return 0; -} - -static bool mid_pci_need_resume(struct pci_dev *dev) -{ - return false; -} - -static const struct pci_platform_pm_ops mid_pci_platform_pm = { - .is_manageable = mid_pci_power_manageable, - .set_state = mid_pci_set_power_state, - .get_state = mid_pci_get_power_state, - .choose_state = mid_pci_choose_state, - .set_wakeup = mid_pci_wakeup, - .need_resume = mid_pci_need_resume, -}; - /* * This table should be in sync with the one in * arch/x86/platform/intel-mid/pwr.c. @@ -71,7 +49,8 @@ static int __init mid_pci_init(void) id = x86_match_cpu(lpss_cpu_ids); if (id) - pci_set_platform_pm(&mid_pci_platform_pm); + pci_mid_pm_enabled = true; + return 0; } arch_initcall(mid_pci_init); Index: linux-pm/drivers/pci/pci.h =================================================================== --- linux-pm.orig/drivers/pci/pci.h +++ linux-pm/drivers/pci/pci.h @@ -744,4 +744,23 @@ extern const struct attribute_group aspm extern const struct attribute_group pci_dev_reset_method_attr_group; +#ifdef CONFIG_X86_INTEL_MID +bool pci_use_mid_pm(void); +int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state); +pci_power_t mid_pci_get_power_state(struct pci_dev *pdev); +#else +static inline bool pci_use_mid_pm(void) +{ + return false; +} +static inline int mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state) +{ + return -ENODEV; +} +static inline pci_power_t mid_pci_get_power_state(struct pci_dev *pdev) +{ + return PCI_UNKNOWN; +} +#endif + #endif /* DRIVERS_PCI_H */ Index: linux-pm/drivers/pci/pci.c =================================================================== --- linux-pm.orig/drivers/pci/pci.c +++ linux-pm/drivers/pci/pci.c @@ -985,45 +985,66 @@ int pci_set_platform_pm(const struct pci static inline bool platform_pci_power_manageable(struct pci_dev *dev) { + if (pci_use_mid_pm()) + return true; + return pci_platform_pm ? pci_platform_pm->is_manageable(dev) : false; } static inline int platform_pci_set_power_state(struct pci_dev *dev, pci_power_t t) { + if (pci_use_mid_pm()) + return mid_pci_set_power_state(dev, t); + return pci_platform_pm ? pci_platform_pm->set_state(dev, t) : -ENOSYS; } static inline pci_power_t platform_pci_get_power_state(struct pci_dev *dev) { + if (pci_use_mid_pm()) + return mid_pci_get_power_state(dev); + return pci_platform_pm ? pci_platform_pm->get_state(dev) : PCI_UNKNOWN; } static inline void platform_pci_refresh_power_state(struct pci_dev *dev) { - if (pci_platform_pm && pci_platform_pm->refresh_state) + if (!pci_use_mid_pm() && pci_platform_pm && pci_platform_pm->refresh_state) pci_platform_pm->refresh_state(dev); } static inline pci_power_t platform_pci_choose_state(struct pci_dev *dev) { + if (pci_use_mid_pm()) + return PCI_POWER_ERROR; + return pci_platform_pm ? pci_platform_pm->choose_state(dev) : PCI_POWER_ERROR; } static inline int platform_pci_set_wakeup(struct pci_dev *dev, bool enable) { + if (pci_use_mid_pm()) + return PCI_POWER_ERROR; + return pci_platform_pm ? pci_platform_pm->set_wakeup(dev, enable) : -ENODEV; } static inline bool platform_pci_need_resume(struct pci_dev *dev) { + if (pci_use_mid_pm()) + return false; + return pci_platform_pm ? pci_platform_pm->need_resume(dev) : false; } static inline bool platform_pci_bridge_d3(struct pci_dev *dev) { + if (pci_use_mid_pm()) + return false; + if (pci_platform_pm && pci_platform_pm->bridge_d3) return pci_platform_pm->bridge_d3(dev); return false; From patchwork Mon Sep 20 19:17:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 12506263 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F9DAC4332F for ; Mon, 20 Sep 2021 19:20:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 64FAC6127B for ; Mon, 20 Sep 2021 19:20:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347889AbhITTVo (ORCPT ); Mon, 20 Sep 2021 15:21:44 -0400 Received: from cloudserver094114.home.pl ([79.96.170.134]:45714 "EHLO cloudserver094114.home.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347806AbhITTTm (ORCPT ); Mon, 20 Sep 2021 15:19:42 -0400 Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 3.0.0) id 4d4f752364788fdc; Mon, 20 Sep 2021 21:18:14 +0200 Received: from kreacher.localnet (unknown [213.134.187.25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id 4F7FB66A65F; Mon, 20 Sep 2021 21:18:13 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux PCI Cc: Linux ACPI , LKML , Bjorn Helgaas , Andy Shevchenko , Mika Westerberg Subject: [PATCH v2 2/7] PCI: ACPI: PM: Do not use pci_platform_pm_ops for ACPI Date: Mon, 20 Sep 2021 21:17:08 +0200 Message-ID: <8879480.rMLUfLXkoz@kreacher> In-Reply-To: <1800633.tdWV9SEqCh@kreacher> References: <1800633.tdWV9SEqCh@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 213.134.187.25 X-CLIENT-HOSTNAME: 213.134.187.25 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvtddrudeivddgudefgecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdejlefghfeiudektdelkeekvddugfeghffggeejgfeukeejleevgffgvdeluddtnecukfhppedvudefrddufeegrddukeejrddvheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvudefrddufeegrddukeejrddvhedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedprhgtphhtthhopehlihhnuhigqdhptghisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtohephhgvlhhgrggrsheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnughrihihrdhshhgvvhgt hhgvnhhkoheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmihhkrgdrfigvshhtvghrsggvrhhgsehlihhnuhigrdhinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=6 Fuz1=6 Fuz2=6 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Rafael J. Wysocki Using struct pci_platform_pm_ops for ACPI adds unnecessary indirection to the interactions between the PCI core and ACPI PM, which is also subject to retpolines. Moreover, it is not particularly clear from the current code that, as far as PCI PM is concerned, "platform" really means just ACPI except for the special casess when Intel MID PCI PM is used or when ACPI support is disabled (through the kernel config or command line, or because there are no usable ACPI tables on the system). To address the above, rework the PCI PM code to invoke ACPI PM functions directly as needed and drop the acpi_pci_platform_pm object that is not necessary any more. Accordingly, update some of the ACPI PM functions in question to do extra checks in case the ACPI support is disabled (which previously was taken care of by avoiding to set the pci_platform_ops pointer in those cases). Signed-off-by: Rafael J. Wysocki --- v1 -> v2: * Rebase on top of the new [1/7] and move dropping struct pci_platform_pm_ops to a separate patch. --- drivers/pci/pci-acpi.c | 42 ++++++++++++++++++++---------------------- drivers/pci/pci.c | 22 +++++++++------------- drivers/pci/pci.h | 38 +++++++++++++++++++++++++++++++++++++- 3 files changed, 66 insertions(+), 36 deletions(-) Index: linux-pm/drivers/pci/pci-acpi.c =================================================================== --- linux-pm.orig/drivers/pci/pci-acpi.c +++ linux-pm/drivers/pci/pci-acpi.c @@ -906,10 +906,13 @@ acpi_status pci_acpi_add_pm_notifier(str * choose highest power _SxD or any lower power */ -static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev) +pci_power_t acpi_pci_choose_state(struct pci_dev *pdev) { int acpi_state, d_max; + if (acpi_pci_disabled) + return PCI_POWER_ERROR; + if (pdev->no_d3cold) d_max = ACPI_STATE_D3_HOT; else @@ -965,7 +968,7 @@ int pci_dev_acpi_reset(struct pci_dev *d return 0; } -static bool acpi_pci_power_manageable(struct pci_dev *dev) +bool acpi_pci_power_manageable(struct pci_dev *dev) { struct acpi_device *adev = ACPI_COMPANION(&dev->dev); @@ -974,13 +977,13 @@ static bool acpi_pci_power_manageable(st return acpi_device_power_manageable(adev); } -static bool acpi_pci_bridge_d3(struct pci_dev *dev) +bool acpi_pci_bridge_d3(struct pci_dev *dev) { const union acpi_object *obj; struct acpi_device *adev; struct pci_dev *rpdev; - if (!dev->is_hotplug_bridge) + if (acpi_pci_disabled || !dev->is_hotplug_bridge) return false; /* Assume D3 support if the bridge is power-manageable by ACPI. */ @@ -1008,7 +1011,7 @@ static bool acpi_pci_bridge_d3(struct pc return obj->integer.value == 1; } -static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) +int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) { struct acpi_device *adev = ACPI_COMPANION(&dev->dev); static const u8 state_conv[] = { @@ -1046,7 +1049,7 @@ static int acpi_pci_set_power_state(stru return error; } -static pci_power_t acpi_pci_get_power_state(struct pci_dev *dev) +pci_power_t acpi_pci_get_power_state(struct pci_dev *dev) { struct acpi_device *adev = ACPI_COMPANION(&dev->dev); static const pci_power_t state_conv[] = { @@ -1068,7 +1071,7 @@ static pci_power_t acpi_pci_get_power_st return state_conv[state]; } -static void acpi_pci_refresh_power_state(struct pci_dev *dev) +void acpi_pci_refresh_power_state(struct pci_dev *dev) { struct acpi_device *adev = ACPI_COMPANION(&dev->dev); @@ -1093,17 +1096,23 @@ static int acpi_pci_propagate_wakeup(str return 0; } -static int acpi_pci_wakeup(struct pci_dev *dev, bool enable) +int acpi_pci_wakeup(struct pci_dev *dev, bool enable) { + if (acpi_pci_disabled) + return 0; + if (acpi_pm_device_can_wakeup(&dev->dev)) return acpi_pm_set_device_wakeup(&dev->dev, enable); return acpi_pci_propagate_wakeup(dev->bus, enable); } -static bool acpi_pci_need_resume(struct pci_dev *dev) +bool acpi_pci_need_resume(struct pci_dev *dev) { - struct acpi_device *adev = ACPI_COMPANION(&dev->dev); + struct acpi_device *adev; + + if (acpi_pci_disabled) + return false; /* * In some cases (eg. Samsung 305V4A) leaving a bridge in suspend over @@ -1118,6 +1127,7 @@ static bool acpi_pci_need_resume(struct if (!adev || !acpi_device_power_manageable(adev)) return false; + adev = ACPI_COMPANION(&dev->dev); if (adev->wakeup.flags.valid && device_may_wakeup(&dev->dev) != !!adev->wakeup.prepare_count) return true; @@ -1128,17 +1138,6 @@ static bool acpi_pci_need_resume(struct return !!adev->power.flags.dsw_present; } -static const struct pci_platform_pm_ops acpi_pci_platform_pm = { - .bridge_d3 = acpi_pci_bridge_d3, - .is_manageable = acpi_pci_power_manageable, - .set_state = acpi_pci_set_power_state, - .get_state = acpi_pci_get_power_state, - .refresh_state = acpi_pci_refresh_power_state, - .choose_state = acpi_pci_choose_state, - .set_wakeup = acpi_pci_wakeup, - .need_resume = acpi_pci_need_resume, -}; - void acpi_pci_add_bus(struct pci_bus *bus) { union acpi_object *obj; @@ -1448,7 +1447,6 @@ static int __init acpi_pci_init(void) if (acpi_pci_disabled) return 0; - pci_set_platform_pm(&acpi_pci_platform_pm); acpi_pci_slot_init(); acpiphp_init(); Index: linux-pm/drivers/pci/pci.h =================================================================== --- linux-pm.orig/drivers/pci/pci.h +++ linux-pm/drivers/pci/pci.h @@ -725,17 +725,53 @@ int pci_acpi_program_hp_params(struct pc extern const struct attribute_group pci_dev_acpi_attr_group; void pci_set_acpi_fwnode(struct pci_dev *dev); int pci_dev_acpi_reset(struct pci_dev *dev, bool probe); +bool acpi_pci_power_manageable(struct pci_dev *dev); +bool acpi_pci_bridge_d3(struct pci_dev *dev); +int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state); +pci_power_t acpi_pci_get_power_state(struct pci_dev *dev); +void acpi_pci_refresh_power_state(struct pci_dev *dev); +int acpi_pci_wakeup(struct pci_dev *dev, bool enable); +bool acpi_pci_need_resume(struct pci_dev *dev); +pci_power_t acpi_pci_choose_state(struct pci_dev *pdev); #else static inline int pci_dev_acpi_reset(struct pci_dev *dev, bool probe) { return -ENOTTY; } - static inline void pci_set_acpi_fwnode(struct pci_dev *dev) {} static inline int pci_acpi_program_hp_params(struct pci_dev *dev) { return -ENODEV; } +static inline bool acpi_pci_power_manageable(struct pci_dev *dev) +{ + return false; +} +static inline bool acpi_pci_bridge_d3(struct pci_dev *dev) +{ + return false; +} +static inline int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) +{ + return -ENODEV; +} +static inline pci_power_t acpi_pci_get_power_state(struct pci_dev *dev) +{ + return PCI_UNKNOWN; +} +static inline void acpi_pci_refresh_power_state(struct pci_dev *dev) {} +static inline int acpi_pci_wakeup(struct pci_dev *dev, bool enable) +{ + return -ENODEV; +} +static inline bool acpi_pci_need_resume(struct pci_dev *dev) +{ + return false; +} +static inline pci_power_t acpi_pci_choose_state(struct pci_dev *pdev) +{ + return PCI_POWER_ERROR; +} #endif #ifdef CONFIG_PCIEASPM Index: linux-pm/drivers/pci/pci.c =================================================================== --- linux-pm.orig/drivers/pci/pci.c +++ linux-pm/drivers/pci/pci.c @@ -988,7 +988,7 @@ static inline bool platform_pci_power_ma if (pci_use_mid_pm()) return true; - return pci_platform_pm ? pci_platform_pm->is_manageable(dev) : false; + return acpi_pci_power_manageable(dev); } static inline int platform_pci_set_power_state(struct pci_dev *dev, @@ -997,7 +997,7 @@ static inline int platform_pci_set_power if (pci_use_mid_pm()) return mid_pci_set_power_state(dev, t); - return pci_platform_pm ? pci_platform_pm->set_state(dev, t) : -ENOSYS; + return acpi_pci_set_power_state(dev, t); } static inline pci_power_t platform_pci_get_power_state(struct pci_dev *dev) @@ -1005,13 +1005,13 @@ static inline pci_power_t platform_pci_g if (pci_use_mid_pm()) return mid_pci_get_power_state(dev); - return pci_platform_pm ? pci_platform_pm->get_state(dev) : PCI_UNKNOWN; + return acpi_pci_get_power_state(dev); } static inline void platform_pci_refresh_power_state(struct pci_dev *dev) { - if (!pci_use_mid_pm() && pci_platform_pm && pci_platform_pm->refresh_state) - pci_platform_pm->refresh_state(dev); + if (!pci_use_mid_pm()) + acpi_pci_refresh_power_state(dev); } static inline pci_power_t platform_pci_choose_state(struct pci_dev *dev) @@ -1019,8 +1019,7 @@ static inline pci_power_t platform_pci_c if (pci_use_mid_pm()) return PCI_POWER_ERROR; - return pci_platform_pm ? - pci_platform_pm->choose_state(dev) : PCI_POWER_ERROR; + return acpi_pci_choose_state(dev); } static inline int platform_pci_set_wakeup(struct pci_dev *dev, bool enable) @@ -1028,8 +1027,7 @@ static inline int platform_pci_set_wakeu if (pci_use_mid_pm()) return PCI_POWER_ERROR; - return pci_platform_pm ? - pci_platform_pm->set_wakeup(dev, enable) : -ENODEV; + return acpi_pci_wakeup(dev, enable); } static inline bool platform_pci_need_resume(struct pci_dev *dev) @@ -1037,7 +1035,7 @@ static inline bool platform_pci_need_res if (pci_use_mid_pm()) return false; - return pci_platform_pm ? pci_platform_pm->need_resume(dev) : false; + return acpi_pci_need_resume(dev); } static inline bool platform_pci_bridge_d3(struct pci_dev *dev) @@ -1045,9 +1043,7 @@ static inline bool platform_pci_bridge_d if (pci_use_mid_pm()) return false; - if (pci_platform_pm && pci_platform_pm->bridge_d3) - return pci_platform_pm->bridge_d3(dev); - return false; + return acpi_pci_bridge_d3(dev); } /** From patchwork Mon Sep 20 19:17:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 12506261 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B8D1AC433EF for ; Mon, 20 Sep 2021 19:20:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A079061175 for ; Mon, 20 Sep 2021 19:20:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347836AbhITTVm (ORCPT ); Mon, 20 Sep 2021 15:21:42 -0400 Received: from cloudserver094114.home.pl ([79.96.170.134]:44432 "EHLO cloudserver094114.home.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347799AbhITTTl (ORCPT ); Mon, 20 Sep 2021 15:19:41 -0400 Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 3.0.0) id 72b42ea017650ae7; Mon, 20 Sep 2021 21:18:12 +0200 Received: from kreacher.localnet (unknown [213.134.187.25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id B0CCD66A65F; Mon, 20 Sep 2021 21:18:11 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux PCI Cc: Linux ACPI , LKML , Bjorn Helgaas , Andy Shevchenko , Mika Westerberg Subject: [PATCH v2 3/7] PCI: PM: Drop struct pci_platform_pm_ops Date: Mon, 20 Sep 2021 21:17:16 +0200 Message-ID: <4373094.cEBGB3zze1@kreacher> In-Reply-To: <1800633.tdWV9SEqCh@kreacher> References: <1800633.tdWV9SEqCh@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 213.134.187.25 X-CLIENT-HOSTNAME: 213.134.187.25 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvtddrudeivddgudefgecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdejlefghfeiudektdelkeekvddugfeghffggeejgfeukeejleevgffgvdeluddtnecukfhppedvudefrddufeegrddukeejrddvheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvudefrddufeegrddukeejrddvhedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedprhgtphhtthhopehlihhnuhigqdhptghisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtohephhgvlhhgrggrsheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnughrihihrdhshhgvvhgt hhgvnhhkoheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmihhkrgdrfigvshhtvghrsggvrhhgsehlihhnuhigrdhinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=6 Fuz1=6 Fuz2=6 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Rafael J. Wysocki After previous changes there are no more users of struct pci_platform_pm_ops in the tree, so drop it along with all of the remaining related code. Signed-off-by: Rafael J. Wysocki --- New patch in v2. --- drivers/pci/pci.c | 11 ----------- drivers/pci/pci.h | 39 --------------------------------------- 2 files changed, 50 deletions(-) Index: linux-pm/drivers/pci/pci.h =================================================================== --- linux-pm.orig/drivers/pci/pci.h +++ linux-pm/drivers/pci/pci.h @@ -63,45 +63,6 @@ struct pci_cap_saved_state *pci_find_sav #define PCI_PM_D3HOT_WAIT 10 /* msec */ #define PCI_PM_D3COLD_WAIT 100 /* msec */ -/** - * struct pci_platform_pm_ops - Firmware PM callbacks - * - * @bridge_d3: Does the bridge allow entering into D3 - * - * @is_manageable: returns 'true' if given device is power manageable by the - * platform firmware - * - * @set_state: invokes the platform firmware to set the device's power state - * - * @get_state: queries the platform firmware for a device's current power state - * - * @refresh_state: asks the platform to refresh the device's power state data - * - * @choose_state: returns PCI power state of given device preferred by the - * platform; to be used during system-wide transitions from a - * sleeping state to the working state and vice versa - * - * @set_wakeup: enables/disables wakeup capability for the device - * - * @need_resume: returns 'true' if the given device (which is currently - * suspended) needs to be resumed to be configured for system - * wakeup. - * - * If given platform is generally capable of power managing PCI devices, all of - * these callbacks are mandatory. - */ -struct pci_platform_pm_ops { - bool (*bridge_d3)(struct pci_dev *dev); - bool (*is_manageable)(struct pci_dev *dev); - int (*set_state)(struct pci_dev *dev, pci_power_t state); - pci_power_t (*get_state)(struct pci_dev *dev); - void (*refresh_state)(struct pci_dev *dev); - pci_power_t (*choose_state)(struct pci_dev *dev); - int (*set_wakeup)(struct pci_dev *dev, bool enable); - bool (*need_resume)(struct pci_dev *dev); -}; - -int pci_set_platform_pm(const struct pci_platform_pm_ops *ops); void pci_update_current_state(struct pci_dev *dev, pci_power_t state); void pci_refresh_power_state(struct pci_dev *dev); int pci_power_up(struct pci_dev *dev); Index: linux-pm/drivers/pci/pci.c =================================================================== --- linux-pm.orig/drivers/pci/pci.c +++ linux-pm/drivers/pci/pci.c @@ -972,17 +972,6 @@ static void pci_restore_bars(struct pci_ pci_update_resource(dev, i); } -static const struct pci_platform_pm_ops *pci_platform_pm; - -int pci_set_platform_pm(const struct pci_platform_pm_ops *ops) -{ - if (!ops->is_manageable || !ops->set_state || !ops->get_state || - !ops->choose_state || !ops->set_wakeup || !ops->need_resume) - return -EINVAL; - pci_platform_pm = ops; - return 0; -} - static inline bool platform_pci_power_manageable(struct pci_dev *dev) { if (pci_use_mid_pm()) From patchwork Mon Sep 20 19:17:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 12506259 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8551FC433F5 for ; Mon, 20 Sep 2021 19:20:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 730C361183 for ; Mon, 20 Sep 2021 19:20:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347829AbhITTVl (ORCPT ); Mon, 20 Sep 2021 15:21:41 -0400 Received: from cloudserver094114.home.pl ([79.96.170.134]:61144 "EHLO cloudserver094114.home.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347797AbhITTTj (ORCPT ); Mon, 20 Sep 2021 15:19:39 -0400 Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 3.0.0) id 4c775343fdb69fac; Mon, 20 Sep 2021 21:18:11 +0200 Received: from kreacher.localnet (unknown [213.134.187.25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id D9E2E66A65F; Mon, 20 Sep 2021 21:18:09 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux PCI Cc: Linux ACPI , LKML , Bjorn Helgaas , Andy Shevchenko , Mika Westerberg Subject: [PATCH v2 4/7] PCI: PM: Rearrange pci_target_state() Date: Mon, 20 Sep 2021 21:17:21 +0200 Message-ID: <2559274.X9hSmTKtgW@kreacher> In-Reply-To: <1800633.tdWV9SEqCh@kreacher> References: <1800633.tdWV9SEqCh@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 213.134.187.25 X-CLIENT-HOSTNAME: 213.134.187.25 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvtddrudeivddgudefgecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdejlefghfeiudektdelkeekvddugfeghffggeejgfeukeejleevgffgvdeluddtnecukfhppedvudefrddufeegrddukeejrddvheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvudefrddufeegrddukeejrddvhedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedprhgtphhtthhopehlihhnuhigqdhptghisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtohephhgvlhhgrggrsheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnughrihihrdhshhgvvhgt hhgvnhhkoheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmihhkrgdrfigvshhtvghrsggvrhhgsehlihhnuhigrdhinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=6 Fuz1=6 Fuz2=6 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Rafael J. Wysocki Make pci_target_state() return D3cold or D0 without checking PME support if the current power state of the device is D3cold or if it does not support the standard PCI PM, respectively. Next, drop the tergat_state local variable that has become redundant from it. Signed-off-by: Rafael J. Wysocki --- v1 -> v2: * Rebase on top of the new [1-3/7]. --- drivers/pci/pci.c | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-) Index: linux-pm/drivers/pci/pci.c =================================================================== --- linux-pm.orig/drivers/pci/pci.c +++ linux-pm/drivers/pci/pci.c @@ -2583,8 +2583,6 @@ EXPORT_SYMBOL(pci_wake_from_d3); */ static pci_power_t pci_target_state(struct pci_dev *dev, bool wakeup) { - pci_power_t target_state = PCI_D3hot; - if (platform_pci_power_manageable(dev)) { /* * Call the platform to find the target state for the device. @@ -2594,32 +2592,29 @@ static pci_power_t pci_target_state(stru switch (state) { case PCI_POWER_ERROR: case PCI_UNKNOWN: - break; + return PCI_D3hot; + case PCI_D1: case PCI_D2: if (pci_no_d1d2(dev)) - break; - fallthrough; - default: - target_state = state; + return PCI_D3hot; } - return target_state; + return state; } - if (!dev->pm_cap) - target_state = PCI_D0; - /* * If the device is in D3cold even though it's not power-manageable by * the platform, it may have been powered down by non-standard means. * Best to let it slumber. */ if (dev->current_state == PCI_D3cold) - target_state = PCI_D3cold; + return PCI_D3cold; + else if (!dev->pm_cap) + return PCI_D0; if (wakeup && dev->pme_support) { - pci_power_t state = target_state; + pci_power_t state = PCI_D3hot; /* * Find the deepest state from which the device can generate @@ -2634,7 +2629,7 @@ static pci_power_t pci_target_state(stru return PCI_D0; } - return target_state; + return PCI_D3hot; } /** From patchwork Mon Sep 20 19:17:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 12506257 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0BB6C433F5 for ; Mon, 20 Sep 2021 19:20:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C9C0C61184 for ; Mon, 20 Sep 2021 19:20:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346062AbhITTVj (ORCPT ); Mon, 20 Sep 2021 15:21:39 -0400 Received: from cloudserver094114.home.pl ([79.96.170.134]:60240 "EHLO cloudserver094114.home.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347795AbhITTTh (ORCPT ); Mon, 20 Sep 2021 15:19:37 -0400 Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 3.0.0) id ff32e75a87175858; Mon, 20 Sep 2021 21:18:09 +0200 Received: from kreacher.localnet (unknown [213.134.187.25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id 3E56266A65F; Mon, 20 Sep 2021 21:18:08 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux PCI Cc: Linux ACPI , LKML , Bjorn Helgaas , Andy Shevchenko , Mika Westerberg Subject: [PATCH v2 5/7] PCI: PM: Make pci_choose_state() call pci_target_state() Date: Mon, 20 Sep 2021 21:17:27 +0200 Message-ID: <12860712.dW097sEU6C@kreacher> In-Reply-To: <1800633.tdWV9SEqCh@kreacher> References: <1800633.tdWV9SEqCh@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 213.134.187.25 X-CLIENT-HOSTNAME: 213.134.187.25 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvtddrudeivddgudeffecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdejlefghfeiudektdelkeekvddugfeghffggeejgfeukeejleevgffgvdeluddtnecukfhppedvudefrddufeegrddukeejrddvheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvudefrddufeegrddukeejrddvhedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedprhgtphhtthhopehlihhnuhigqdhptghisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtohephhgvlhhgrggrsheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnughrihihrdhshhgvvhgt hhgvnhhkoheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmihhkrgdrfigvshhtvghrsggvrhhgsehlihhnuhigrdhinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=6 Fuz1=6 Fuz2=6 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Rafael J. Wysocki The pci_choose_state() and pci_target_state() implementations are somewhat divergent without a good reason, because they are used for similar purposes. Change the pci_choose_state() implementation to use pci_target_state() internally except for transitions to the working state of the system in which case it is expected to return D0. Signed-off-by: Rafael J. Wysocki --- v1 -> v2: * Rebase on top of the new [1-4/7]. --- drivers/pci/pci-acpi.c | 3 -- drivers/pci/pci.c | 54 ++++++++++++++----------------------------------- 2 files changed, 16 insertions(+), 41 deletions(-) Index: linux-pm/drivers/pci/pci.c =================================================================== --- linux-pm.orig/drivers/pci/pci.c +++ linux-pm/drivers/pci/pci.c @@ -1394,44 +1394,6 @@ int pci_set_power_state(struct pci_dev * } EXPORT_SYMBOL(pci_set_power_state); -/** - * pci_choose_state - Choose the power state of a PCI device - * @dev: PCI device to be suspended - * @state: target sleep state for the whole system. This is the value - * that is passed to suspend() function. - * - * Returns PCI power state suitable for given device and given system - * message. - */ -pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) -{ - pci_power_t ret; - - if (!dev->pm_cap) - return PCI_D0; - - ret = platform_pci_choose_state(dev); - if (ret != PCI_POWER_ERROR) - return ret; - - switch (state.event) { - case PM_EVENT_ON: - return PCI_D0; - case PM_EVENT_FREEZE: - case PM_EVENT_PRETHAW: - /* REVISIT both freeze and pre-thaw "should" use D0 */ - case PM_EVENT_SUSPEND: - case PM_EVENT_HIBERNATE: - return PCI_D3hot; - default: - pci_info(dev, "unrecognized suspend event %d\n", - state.event); - BUG(); - } - return PCI_D0; -} -EXPORT_SYMBOL(pci_choose_state); - #define PCI_EXP_SAVE_REGS 7 static struct pci_cap_saved_state *_pci_find_saved_cap(struct pci_dev *pci_dev, @@ -2843,6 +2805,22 @@ void pci_dev_complete_resume(struct pci_ spin_unlock_irq(&dev->power.lock); } +/** + * pci_choose_state - Choose the power state of a PCI device. + * @dev: Target PCI device. + * @state: Target state for the whole system. + * + * Returns PCI power state suitable for @dev and @state. + */ +pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) +{ + if (state.event == PM_EVENT_ON) + return PCI_D0; + + return pci_target_state(dev, false); +} +EXPORT_SYMBOL(pci_choose_state); + void pci_config_pm_runtime_get(struct pci_dev *pdev) { struct device *dev = &pdev->dev; Index: linux-pm/drivers/pci/pci-acpi.c =================================================================== --- linux-pm.orig/drivers/pci/pci-acpi.c +++ linux-pm/drivers/pci/pci-acpi.c @@ -910,9 +910,6 @@ pci_power_t acpi_pci_choose_state(struct { int acpi_state, d_max; - if (acpi_pci_disabled) - return PCI_POWER_ERROR; - if (pdev->no_d3cold) d_max = ACPI_STATE_D3_HOT; else From patchwork Mon Sep 20 19:17:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 12506255 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B0C1C433EF for ; Mon, 20 Sep 2021 19:20:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6330B61175 for ; Mon, 20 Sep 2021 19:20:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343812AbhITTVg (ORCPT ); Mon, 20 Sep 2021 15:21:36 -0400 Received: from cloudserver094114.home.pl ([79.96.170.134]:42334 "EHLO cloudserver094114.home.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347793AbhITTTf (ORCPT ); Mon, 20 Sep 2021 15:19:35 -0400 Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 3.0.0) id 77bde04b42c00814; Mon, 20 Sep 2021 21:18:07 +0200 Received: from kreacher.localnet (unknown [213.134.187.25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id 9FF4F66A65F; Mon, 20 Sep 2021 21:18:06 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux PCI Cc: Linux ACPI , LKML , Bjorn Helgaas , Andy Shevchenko , Mika Westerberg Subject: [PATCH v2 6/7] PCI: PM: Do not call platform_pci_power_manageable() unnecessarily Date: Mon, 20 Sep 2021 21:17:33 +0200 Message-ID: <2014133.KlZ2vcFHjT@kreacher> In-Reply-To: <1800633.tdWV9SEqCh@kreacher> References: <1800633.tdWV9SEqCh@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 213.134.187.25 X-CLIENT-HOSTNAME: 213.134.187.25 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvtddrudeivddgudefgecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdejlefghfeiudektdelkeekvddugfeghffggeejgfeukeejleevgffgvdeluddtnecukfhppedvudefrddufeegrddukeejrddvheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvudefrddufeegrddukeejrddvhedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedprhgtphhtthhopehlihhnuhigqdhptghisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtohephhgvlhhgrggrsheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnughrihihrdhshhgvvhgt hhgvnhhkoheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmihhkrgdrfigvshhtvghrsggvrhhgsehlihhnuhigrdhinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=6 Fuz1=6 Fuz2=6 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Rafael J. Wysocki Drop two invocations of platform_pci_power_manageable() that are not necessary, because the functions called when it returns 'true' do the requisite "power manageable" checks themselves. Signed-off-by: Rafael J. Wysocki --- v1 -> v2: * Rebase on top of the new [1-5/7]. * Move the acpi_pci_power_manageable() simplification to a separate patch. * Change the subject. --- Index: linux-pm/drivers/pci/pci.c =================================================================== --- linux-pm.orig/drivers/pci/pci.c +++ linux-pm/drivers/pci/pci.c @@ -1191,9 +1191,7 @@ void pci_update_current_state(struct pci */ void pci_refresh_power_state(struct pci_dev *dev) { - if (platform_pci_power_manageable(dev)) - platform_pci_refresh_power_state(dev); - + platform_pci_refresh_power_state(dev); pci_update_current_state(dev, dev->current_state); } @@ -1206,14 +1204,10 @@ int pci_platform_power_transition(struct { int error; - if (platform_pci_power_manageable(dev)) { - error = platform_pci_set_power_state(dev, state); - if (!error) - pci_update_current_state(dev, state); - } else - error = -ENODEV; - - if (error && !dev->pm_cap) /* Fall back to PCI_D0 */ + error = acpi_pci_set_power_state(dev, state); + if (!error) + pci_update_current_state(dev, state); + else if (!dev->pm_cap) /* Fall back to PCI_D0 */ dev->current_state = PCI_D0; return error; From patchwork Mon Sep 20 19:17:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 12506253 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 202ACC433F5 for ; Mon, 20 Sep 2021 19:20:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EDBA161183 for ; Mon, 20 Sep 2021 19:20:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233300AbhITTVe (ORCPT ); Mon, 20 Sep 2021 15:21:34 -0400 Received: from cloudserver094114.home.pl ([79.96.170.134]:46776 "EHLO cloudserver094114.home.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230482AbhITTTe (ORCPT ); Mon, 20 Sep 2021 15:19:34 -0400 Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 3.0.0) id 148719d5bcbe4d5d; Mon, 20 Sep 2021 21:18:05 +0200 Received: from kreacher.localnet (unknown [213.134.187.25]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by v370.home.net.pl (Postfix) with ESMTPSA id 8454666A65F; Mon, 20 Sep 2021 21:18:03 +0200 (CEST) From: "Rafael J. Wysocki" To: Linux PCI Cc: Linux ACPI , LKML , Bjorn Helgaas , Andy Shevchenko , Mika Westerberg Subject: [PATCH v2 7/7] PCI: PM: Simplify acpi_pci_power_manageable() Date: Mon, 20 Sep 2021 21:17:39 +0200 Message-ID: <2024035.bB369e8A3T@kreacher> In-Reply-To: <1800633.tdWV9SEqCh@kreacher> References: <1800633.tdWV9SEqCh@kreacher> MIME-Version: 1.0 X-CLIENT-IP: 213.134.187.25 X-CLIENT-HOSTNAME: 213.134.187.25 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvtddrudeivddgudefgecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdejlefghfeiudektdelkeekvddugfeghffggeejgfeukeejleevgffgvdeluddtnecukfhppedvudefrddufeegrddukeejrddvheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvudefrddufeegrddukeejrddvhedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedprhgtphhtthhopehlihhnuhigqdhptghisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtohephhgvlhhgrggrsheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprghnughrihihrdhshhgvvhgt hhgvnhhkoheslhhinhhugidrihhnthgvlhdrtghomhdprhgtphhtthhopehmihhkrgdrfigvshhtvghrsggvrhhgsehlihhnuhigrdhinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=6 Fuz1=6 Fuz2=6 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org From: Rafael J. Wysocki Make acpi_pci_power_manageable() more straightforward. Signed-off-by: Rafael J. Wysocki --- New patch in v2. --- drivers/pci/pci-acpi.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) Index: linux-pm/drivers/pci/pci-acpi.c =================================================================== --- linux-pm.orig/drivers/pci/pci-acpi.c +++ linux-pm/drivers/pci/pci-acpi.c @@ -969,9 +969,7 @@ bool acpi_pci_power_manageable(struct pc { struct acpi_device *adev = ACPI_COMPANION(&dev->dev); - if (!adev) - return false; - return acpi_device_power_manageable(adev); + return adev && acpi_device_power_manageable(adev); } bool acpi_pci_bridge_d3(struct pci_dev *dev)