From patchwork Fri May 10 14:03:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 13661634 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 803D7171E76; Fri, 10 May 2024 14:05:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=79.96.170.134 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715349905; cv=none; b=SegMaoQXVbQ72d+oiiJ77Fm5l3P3w10lJWTorbjln688ZetdWz177xA+HIWd+royrXZ7mdqwQIpO3O6Jng6mZwixD8hYxBPmQ9U5DXJ6nSuJCbHKdT0Nhxrjfpw3gnprdhE0bSHdbIkXdHyrixL1lOsgSr/PSdHSfHOg+9uuI6U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715349905; c=relaxed/simple; bh=6nnNI+8ttiFCVavSCR50MiS+cUzOw7OlaLziYY2qETc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=JUt2cRuRj0JmTS2XSgSo9WpNojL1jk1T6mIhliQeTyIx1HkZiGt72/KVW8S+c/ujouge9TPnjIKAX/ACsGLWC4dVl5hRcYKMX6Kif8erhryaGAPL5vLtK/hvH1YuH0V2QpToIKHnoGSKBg0Gmmh8B5oPtHM/4coQ15Hx25z+9k8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net; spf=pass smtp.mailfrom=rjwysocki.net; dkim=fail (2048-bit key) header.d=rjwysocki.net header.i=@rjwysocki.net header.b=l2XMWdQ8 reason="signature verification failed"; arc=none smtp.client-ip=79.96.170.134 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rjwysocki.net Authentication-Results: smtp.subspace.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=rjwysocki.net header.i=@rjwysocki.net header.b="l2XMWdQ8" 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 6.0.0) id 6b0375304aaebbe4; Fri, 10 May 2024 16:05:00 +0200 Received: from kreacher.localnet (unknown [195.136.19.94]) (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 cloudserver094114.home.pl (Postfix) with ESMTPSA id 9074F21031DA; Fri, 10 May 2024 16:04:59 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rjwysocki.net; s=dkim; t=1715349900; bh=6nnNI+8ttiFCVavSCR50MiS+cUzOw7OlaLziYY2qETc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=l2XMWdQ872QdrlLeyaN7JHPOWUJecjwtmOIr4EpJWKkFjQFA/jdNExKyf4/jJ5sZV 1TJ3TcqDcbx0HAPSGOEzgK24w7iLdf1Q9P7Zbu7JE07tqV5sj7i00YwPv5tGIk1Mfd TjMjAOXnoG4RXd+AutK7uUSlT4HsZHyJCv9OvxohbRlrgPO+4iWbqhAQ6V7kA8psce FwOz6SCIufQHO0xmlgSmbRw1FRiulA2SBxWCDuGQpTkegbscJw2SAbUdidTKsQQNrs 9apId3o8muIVhavcaTQu29LnGtk5c/mYcMiYZZ1EbxBpSTuQtmYiW++1Oy51jAXuW2 RtUzSjn38htEg== From: "Rafael J. Wysocki" To: Linux ACPI Cc: LKML , Andy Shevchenko , Hans de Goede , Mario Limonciello , Armin Wolf , Heikki Krogerus Subject: [PATCH v1 1/2] ACPI: EC: Install address space handler at the namespace root Date: Fri, 10 May 2024 16:03:39 +0200 Message-ID: <4926735.31r3eYUQgx@kreacher> In-Reply-To: <5787281.DvuYhMxLoT@kreacher> References: <5787281.DvuYhMxLoT@kreacher> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CLIENT-IP: 195.136.19.94 X-CLIENT-HOSTNAME: 195.136.19.94 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrvdefkedgjeduucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepjedtueefgeevueffgfehjeehteekfefhheeuffevgfefhedtgeffhfevteffteetnecuffhomhgrihhnpehkvghrnhgvlhdrohhrghdpuhgvfhhirdhorhhgnecukfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedpnhgspghrtghpthhtohepjedprhgtphhtthhopehlihhnuhigqdgrtghpihesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegrnhgurhhihidrshhhvghvtghhvghnkhhosehlihhnuhigrdhinhhtvghlrdgtohhmpdhrtghpthhtohephhguvghgohgvuggvsehrvgguhhgrthdrtghomhdprhgtphhtthhopehmrghrihhordhlihhmohhntghivghllhhosegrmhgurdgtohhmpdhrtghpthhtohepfigprghrmhhinhesghhmgidruggv X-DCC--Metrics: v370.home.net.pl 1024; Body=7 Fuz1=7 Fuz2=7 From: Rafael J. Wysocki It is reported that _DSM evaluation fails in ucsi_acpi_dsm() on Lenovo IdeaPad Pro 5 due to a missing address space handler for the EC address space: ACPI Error: No handler for Region [ECSI] (000000007b8176ee) [EmbeddedControl] (20230628/evregion-130) This happens because the EC driver only registers the EC address space handler for operation regions defined in the EC device scope of the ACPI namespace while the operation region being accessed by the _DSM in question is located beyond that scope. To address this, modify the ACPI EC driver to install the EC address space handler at the root of the ACPI namespace. Note that this change is consistent with some examples in the ACPI specification in which EC operation regions located outside the EC device scope are used (for example, see Section 9.17.15 in ACPI 6.5), so the current behavior of the EC driver is arguably questionable. Reported-by: webcaptcha Link: https://bugzilla.kernel.org/show_bug.cgi?id=218789 Link: https://uefi.org/specs/ACPI/6.5/09_ACPI_Defined_Devices_and_Device_Specific_Objects.html#example-asl-code Link: https://lore.kernel.org/linux-acpi/Zi+0whTvDbAdveHq@kuha.fi.intel.com Suggested-by: Heikki Krogerus Signed-off-by: Rafael J. Wysocki --- drivers/acpi/ec.c | 10 +++++----- drivers/acpi/internal.h | 1 - 2 files changed, 5 insertions(+), 6 deletions(-) Index: linux-pm/drivers/acpi/ec.c =================================================================== --- linux-pm.orig/drivers/acpi/ec.c +++ linux-pm/drivers/acpi/ec.c @@ -1488,7 +1488,7 @@ static int ec_install_handlers(struct ac if (!test_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags)) { acpi_ec_enter_noirq(ec); - status = acpi_install_address_space_handler_no_reg(ec->handle, + status = acpi_install_address_space_handler_no_reg(ACPI_ROOT_OBJECT, ACPI_ADR_SPACE_EC, &acpi_ec_space_handler, NULL, ec); @@ -1497,11 +1497,10 @@ static int ec_install_handlers(struct ac return -ENODEV; } set_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags); - ec->address_space_handler_holder = ec->handle; } if (call_reg && !test_bit(EC_FLAGS_EC_REG_CALLED, &ec->flags)) { - acpi_execute_reg_methods(ec->handle, ACPI_ADR_SPACE_EC); + acpi_execute_reg_methods(ACPI_ROOT_OBJECT, ACPI_ADR_SPACE_EC); set_bit(EC_FLAGS_EC_REG_CALLED, &ec->flags); } @@ -1555,8 +1554,9 @@ static void ec_remove_handlers(struct ac { if (test_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags)) { if (ACPI_FAILURE(acpi_remove_address_space_handler( - ec->address_space_handler_holder, - ACPI_ADR_SPACE_EC, &acpi_ec_space_handler))) + ACPI_ROOT_OBJECT, + ACPI_ADR_SPACE_EC, + &acpi_ec_space_handler))) pr_err("failed to remove space handler\n"); clear_bit(EC_FLAGS_EC_HANDLER_INSTALLED, &ec->flags); } Index: linux-pm/drivers/acpi/internal.h =================================================================== --- linux-pm.orig/drivers/acpi/internal.h +++ linux-pm/drivers/acpi/internal.h @@ -186,7 +186,6 @@ enum acpi_ec_event_state { struct acpi_ec { acpi_handle handle; - acpi_handle address_space_handler_holder; int gpe; int irq; unsigned long command_addr; From patchwork Fri May 10 14:04:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 13661633 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DCBFC171E70; Fri, 10 May 2024 14:05:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=79.96.170.134 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715349904; cv=none; b=dUn98AXlH8nF6Be9JuMTOqYLJwuDoWiFYrJ/4WYRD+G1bO9/Mu/gooawy8drzSnEXMOevk6vWeehxvswCuDYENKWx3tb4eZL5nHSNxy7uOCz9102e1uai6t7MyYd/zcqy3uKPu4tdxqzwE+J5EE1LRp4WPwrcdiKtRO42DhpaNs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715349904; c=relaxed/simple; bh=AigkgpHRx5u5xY7r4e5L9K+exbczmphxJ+c+WCFIIDE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=LiLfW93R5zzkVDCzv0Id4KXEnBMhKF2z0oJPkjUiWwqgj0WTBBN9rCAKMGGRqWBeL9YC8f1lsD0WOCSOHLbjE4Qb6kjClaWLF79l0MQA7Ls0Y899/UVCFrh7vaDLGEI5E47NCpY03zVhb8xbkHeS33tWA9kO1386v+ukno2ACVk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net; spf=pass smtp.mailfrom=rjwysocki.net; dkim=fail (2048-bit key) header.d=rjwysocki.net header.i=@rjwysocki.net header.b=MjV+YDeh reason="signature verification failed"; arc=none smtp.client-ip=79.96.170.134 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rjwysocki.net Authentication-Results: smtp.subspace.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=rjwysocki.net header.i=@rjwysocki.net header.b="MjV+YDeh" 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 6.0.0) id a7fd470ac8d4b3c8; Fri, 10 May 2024 16:04:59 +0200 Received: from kreacher.localnet (unknown [195.136.19.94]) (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 cloudserver094114.home.pl (Postfix) with ESMTPSA id BA58821031DA; Fri, 10 May 2024 16:04:58 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rjwysocki.net; s=dkim; t=1715349899; bh=AigkgpHRx5u5xY7r4e5L9K+exbczmphxJ+c+WCFIIDE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=MjV+YDehwUHtsp2lTEOQugh+oqzekHf0mRoM2nu0a17A2RM7kZs3vyRTU35Do+hs9 DHdTCxVRFTKtm63K8uACJc006JsyFeySnRtNc0nv+r9/kBz/gIEURLtXTAZUqn7wpL uydkDZ1qIj9e2pjXc1SDpP0l4pqYhd3y/dFeY4GuGpBO5hrQm8Z88y+wY65+LhMyWn hXxs161oUdoaBPAFQfz3M1UccJ5En0Ou14sPaKNsiFkkkV7QtNiK6sgIAYIjQ/WnHR K7gL05hWpvhc3WYU9tND39Fckvt7Ac3Emda3ZIghPmZeZA0RGmpxMLE7zKgJp8YD5s 3fNhOKWjU1HIw== From: "Rafael J. Wysocki" To: Linux ACPI Cc: LKML , Andy Shevchenko , Hans de Goede , Mario Limonciello , Armin Wolf , Heikki Krogerus Subject: [PATCH v1 2/2] platform/x86: wmi: Remove custom EC address space handler Date: Fri, 10 May 2024 16:04:50 +0200 Message-ID: <2332870.ElGaqSPkdT@kreacher> In-Reply-To: <5787281.DvuYhMxLoT@kreacher> References: <5787281.DvuYhMxLoT@kreacher> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CLIENT-IP: 195.136.19.94 X-CLIENT-HOSTNAME: 195.136.19.94 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrvdefkedgjedvucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdffueeitdfgvddtudegueejtdffteetgeefkeffvdeftddttdeuhfegfedvjefhnecukfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedpnhgspghrtghpthhtohepjedprhgtphhtthhopehlihhnuhigqdgrtghpihesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegrnhgurhhihidrshhhvghvtghhvghnkhhosehlihhnuhigrdhinhhtvghlrdgtohhmpdhrtghpthhtohephhguvghgohgvuggvsehrvgguhhgrthdrtghomhdprhgtphhtthhopehmrghrihhordhlihhmohhntghivghllhhosegrmhgurdgtohhmpdhrtghpthhtohepfigprghrmhhinhesghhmgidruggv X-DCC--Metrics: v370.home.net.pl 1024; Body=7 Fuz1=7 Fuz2=7 From: Rafael J. Wysocki The custom EC address space handler in the WMI driver was only needed because the EC driver did not install its address space handler for EC operation regions beyond the EC device scope in the ACPI namespace. That has just changed, so the custom EC address handler is not needed any more and it can be removed. Signed-off-by: Rafael J. Wysocki Reviewed-by: Armin Wolf --- drivers/platform/x86/wmi.c | 62 --------------------------------------------- 1 file changed, 62 deletions(-) Index: linux-pm/drivers/platform/x86/wmi.c =================================================================== --- linux-pm.orig/drivers/platform/x86/wmi.c +++ linux-pm/drivers/platform/x86/wmi.c @@ -1153,47 +1153,6 @@ static int parse_wdg(struct device *wmi_ return 0; } -/* - * WMI can have EmbeddedControl access regions. In which case, we just want to - * hand these off to the EC driver. - */ -static acpi_status -acpi_wmi_ec_space_handler(u32 function, acpi_physical_address address, - u32 bits, u64 *value, - void *handler_context, void *region_context) -{ - int result = 0; - u8 temp = 0; - - if ((address > 0xFF) || !value) - return AE_BAD_PARAMETER; - - if (function != ACPI_READ && function != ACPI_WRITE) - return AE_BAD_PARAMETER; - - if (bits != 8) - return AE_BAD_PARAMETER; - - if (function == ACPI_READ) { - result = ec_read(address, &temp); - *value = temp; - } else { - temp = 0xff & *value; - result = ec_write(address, temp); - } - - switch (result) { - case -EINVAL: - return AE_BAD_PARAMETER; - case -ENODEV: - return AE_NOT_FOUND; - case -ETIME: - return AE_TIME; - default: - return AE_OK; - } -} - static int wmi_get_notify_data(struct wmi_block *wblock, union acpi_object **obj) { struct acpi_buffer data = { ACPI_ALLOCATE_BUFFER, NULL }; @@ -1308,14 +1267,6 @@ static void acpi_wmi_remove_notify_handl acpi_remove_notify_handler(acpi_device->handle, ACPI_ALL_NOTIFY, acpi_wmi_notify_handler); } -static void acpi_wmi_remove_address_space_handler(void *data) -{ - struct acpi_device *acpi_device = data; - - acpi_remove_address_space_handler(acpi_device->handle, ACPI_ADR_SPACE_EC, - &acpi_wmi_ec_space_handler); -} - static void acpi_wmi_remove_bus_device(void *data) { struct device *wmi_bus_dev = data; @@ -1347,19 +1298,6 @@ static int acpi_wmi_probe(struct platfor dev_set_drvdata(&device->dev, wmi_bus_dev); - status = acpi_install_address_space_handler(acpi_device->handle, - ACPI_ADR_SPACE_EC, - &acpi_wmi_ec_space_handler, - NULL, NULL); - if (ACPI_FAILURE(status)) { - dev_err(&device->dev, "Error installing EC region handler\n"); - return -ENODEV; - } - error = devm_add_action_or_reset(&device->dev, acpi_wmi_remove_address_space_handler, - acpi_device); - if (error < 0) - return error; - status = acpi_install_notify_handler(acpi_device->handle, ACPI_ALL_NOTIFY, acpi_wmi_notify_handler, wmi_bus_dev); if (ACPI_FAILURE(status)) {