From patchwork Fri Oct 25 01:42:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Kurt Borja X-Patchwork-Id: 13849948 Received: from mail-pl1-f180.google.com (mail-pl1-f180.google.com [209.85.214.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CCFCA4C83; Fri, 25 Oct 2024 01:42:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.180 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729820564; cv=none; b=sWiyj/MHHQUNjCBuTyQ9iJ26+HOiJ19olW+3KzK2zpNAGAcdum92qeQxOi7vZvynqHkAY8qCK2cxD7E1cg2H9Qn/k2f1xTkYYYlrCpLxPRA1LJgj81KimnPJOp4vNyeXS7lk8tizlBvVE8UZXHEU8WIU0HAq/cecIuY5MONAZuE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729820564; c=relaxed/simple; bh=ng1k2OWLtCzhAdG8vj0Q4cdh05MizT2X6Xzpxzv3MbQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uZ8eHQ138B1fYjJzGOhLoi/RXqTR5M0+eWQPlcRCr8QmikSikzwNHcCMGvj9rqp1Le1Gn2cg1T1lnhuUAsfc5zI3kYRSGS8CwTczeRStr8qCbPPtbxkqsEsDs20p0JpWtQxiIM667wd2gazpE3UF/EgY3EOz0uc7UzaLJIuVTiI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=g8w/SsKX; arc=none smtp.client-ip=209.85.214.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="g8w/SsKX" Received: by mail-pl1-f180.google.com with SMTP id d9443c01a7336-20c7edf2872so19262505ad.1; Thu, 24 Oct 2024 18:42:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1729820561; x=1730425361; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=mzEzxjES2gKKPe+KQD5bfIFirqS9kpBr4kJvWxKY5Eo=; b=g8w/SsKXp7kautAcSWd1dvn4CaiOTX7oL/nPGjpWJZwnxSfWrH+ZLR+nWjXCETficg aBq6ECSb9x6S9vz+3UDz/NF37LaMyY9umBqpch6Wp2YtKJtRxw3ZQm0JqFqRQXjgdfrR G3NXTa1Yb1Ie4z2iTdPvArT9o9XVD1bqgiDTvbhn2CAnrW6LUOyZ9PUcgqMXZTiO0BmS RmCwKgxt3Me20O7VK9DesX5Y1OF3v2WLT9kOu2hBPvFVxM86KWgd6ao+GTq1MVlDeYin u4QNVqzDNUGi8eO/ELM3t52v7gmx7sn/NUGniB+YC1ovsnXFSFlLsbjFD+GVts3LThz9 HDFg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729820561; x=1730425361; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=mzEzxjES2gKKPe+KQD5bfIFirqS9kpBr4kJvWxKY5Eo=; b=rr29QQKCxVv7FbOVJy0LfGJSJeCX5T97jRrtOxdHoS6NhN+gpScCDdyIWdFyjJyuQh yTWmvX34voMAeHltT7PTLyJp50cSqZgtmkEBGgToKJibUCl173h237Vo8onE6pS0CmTH ES9atUaORzyrKEQW7d65e6Nl9Jxc2tllTjeDPeNz3tH5lfCYKZDqgdOUfILkIIYofqyS PRc1SNxn6tJ9C8vwzwBq/A73xygSdTLNDejoSUI+c6pl1flhQeR36H8gztowXW7SEoXR 70MsD0e9nlxczkVJoGwFhplUJfrcXJOlGr1dXBSebFhAFNYGuwK6fJ0GZjvio10yoz0M iDuw== X-Forwarded-Encrypted: i=1; AJvYcCUSDc2bO/Du4qBpgJ3XmFi2rBe7vyavmZIP3T4MewHDtTJVxtgj/sd9oFLr13+Bns1fSXBRMsWD+XhpZv4daMb8hBJ0Gw==@vger.kernel.org, AJvYcCUxOwf8CAROIimjz24Hfmp5zUt2YyT799tS8G2Jl6kWU6cS/6rB4XDSZRsXsaE/Nd7XCqbFBhMkmg8Ddp0=@vger.kernel.org X-Gm-Message-State: AOJu0Yzzj/oWfZLDMwotEXZ6vjKRNJx03z5WuDkL3q+u00sXzp484K/o 4adg0zrocq1ITO5JlI6os1erRXvrrv3AEXrIEcwlMI3yhAWKGk0n X-Google-Smtp-Source: AGHT+IGq9HzuKlThRoCcaJquIoAEbVesZn2dOFiylAHYAp9K75/5FeXllpRDtibL1571Nktlon9hMQ== X-Received: by 2002:a17:903:244c:b0:20b:5ef8:10a6 with SMTP id d9443c01a7336-20fb88aa47bmr58608285ad.8.1729820560750; Thu, 24 Oct 2024 18:42:40 -0700 (PDT) Received: from localhost.localdomain (host95.181-12-202.telecom.net.ar. [181.12.202.95]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-210bbf6d3cfsm828355ad.82.2024.10.24.18.42.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Oct 2024 18:42:40 -0700 (PDT) From: Kurt Borja To: kuurtb@gmail.com Cc: W_Armin@gmx.de, hdegoede@redhat.com, ilpo.jarvinen@linux.intel.com, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org Subject: [PATCH v8 4/4] alienware-wmi: WMAX interface documentation Date: Thu, 24 Oct 2024 22:42:30 -0300 Message-ID: <20241025014229.5716-2-kuurtb@gmail.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241025013856.4729-2-kuurtb@gmail.com> References: <20241025013856.4729-2-kuurtb@gmail.com> Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Added documentation for new WMAX interface, present on some Alienware X-Series, Alienware M-Series and Dell's G-Series laptops. Signed-off-by: Kurt Borja Reviewed-by: Armin Wolf Reviewed-by: Ilpo Järvinen --- v8: - Unchanged v7: - Added GameShiftStatus method to documentation - Added remark about operation 0x03 of Thermal_Information method - Removed undocumented methods v6: - Fixed typos - Included new file in MAINTAINERS --- Documentation/wmi/devices/alienware-wmi.rst | 388 ++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 389 insertions(+) create mode 100644 Documentation/wmi/devices/alienware-wmi.rst diff --git a/Documentation/wmi/devices/alienware-wmi.rst b/Documentation/wmi/devices/alienware-wmi.rst new file mode 100644 index 000000000..36a67ff9a --- /dev/null +++ b/Documentation/wmi/devices/alienware-wmi.rst @@ -0,0 +1,388 @@ +.. SPDX-License-Identifier: GPL-2.0-or-later + +============================================== +Dell AWCC WMI interface driver (alienware-wmi) +============================================== + +Introduction +============ + +The WMI device WMAX has been implemented for many Alienware and Dell's G-Series +models. Throughout these models, two implementations have been identified. The +first one, used by older systems, deals with HDMI, brightness, RGB, amplifier +and deep sleep control. The second one used by newer systems deals primarily +with thermal, overclocking, and GPIO control. + +It is suspected that the latter is used by Alienware Command Center (AWCC) to +manage manufacturer predefined thermal profiles. The alienware-wmi driver +exposes Thermal_Information and Thermal_Control methods through the Platform +Profile API to mimic AWCC's behavior. + +This newer interface, named AWCCMethodFunction has been reverse engineered, as +Dell has not provided any official documentation. We will try to describe to the +best of our ability its discovered inner workings. + +.. note:: + The following method description may be incomplete and some operations have + different implementations between devices. + +WMI interface description +------------------------- + +The WMI interface description can be decoded from the embedded binary MOF (bmof) +data using the `bmfdec `_ utility: + +:: + + [WMI, Dynamic, Provider("WmiProv"), Locale("MS\\0x409"), Description("WMI Function"), guid("{A70591CE-A997-11DA-B012-B622A1EF5492}")] + class AWCCWmiMethodFunction { + [key, read] string InstanceName; + [read] boolean Active; + + [WmiMethodId(13), Implemented, read, write, Description("Return Overclocking Report.")] void Return_OverclockingReport([out] uint32 argr); + [WmiMethodId(14), Implemented, read, write, Description("Set OCUIBIOS Control.")] void Set_OCUIBIOSControl([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(15), Implemented, read, write, Description("Clear OC FailSafe Flag.")] void Clear_OCFailSafeFlag([out] uint32 argr); + [WmiMethodId(19), Implemented, read, write, Description("Get Fan Sensors.")] void GetFanSensors([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(20), Implemented, read, write, Description("Thermal Information.")] void Thermal_Information([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(21), Implemented, read, write, Description("Thermal Control.")] void Thermal_Control([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(23), Implemented, read, write, Description("MemoryOCControl.")] void MemoryOCControl([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(26), Implemented, read, write, Description("System Information.")] void SystemInformation([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(28), Implemented, read, write, Description("Power Information.")] void PowerInformation([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(32), Implemented, read, write, Description("FW Update GPIO toggle.")] void FWUpdateGPIOtoggle([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(33), Implemented, read, write, Description("Read Total of GPIOs.")] void ReadTotalofGPIOs([out] uint32 argr); + [WmiMethodId(34), Implemented, read, write, Description("Read GPIO pin Status.")] void ReadGPIOpPinStatus([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(35), Implemented, read, write, Description("Read Chassis Color.")] void ReadChassisColor([out] uint32 argr); + [WmiMethodId(36), Implemented, read, write, Description("Read Platform Properties.")] void ReadPlatformProperties([out] uint32 argr); + [WmiMethodId(37), Implemented, read, write, Description("Game Shift Status.")] void GameShiftStatus([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(128), Implemented, read, write, Description("Caldera SW installation.")] void CalderaSWInstallation([out] uint32 argr); + [WmiMethodId(129), Implemented, read, write, Description("Caldera SW is released.")] void CalderaSWReleased([out] uint32 argr); + [WmiMethodId(130), Implemented, read, write, Description("Caldera Connection Status.")] void CalderaConnectionStatus([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(131), Implemented, read, write, Description("Surprise Unplugged Flag Status.")] void SurpriseUnpluggedFlagStatus([out] uint32 argr); + [WmiMethodId(132), Implemented, read, write, Description("Clear Surprise Unplugged Flag.")] void ClearSurpriseUnpluggedFlag([out] uint32 argr); + [WmiMethodId(133), Implemented, read, write, Description("Cancel Undock Request.")] void CancelUndockRequest([out] uint32 argr); + [WmiMethodId(135), Implemented, read, write, Description("Devices in Caldera.")] void DevicesInCaldera([in] uint32 arg2, [out] uint32 argr); + [WmiMethodId(136), Implemented, read, write, Description("Notify BIOS for SW ready to disconnect Caldera.")] void NotifyBIOSForSWReadyToDisconnectCaldera([out] uint32 argr); + [WmiMethodId(160), Implemented, read, write, Description("Tobii SW installation.")] void TobiiSWinstallation([out] uint32 argr); + [WmiMethodId(161), Implemented, read, write, Description("Tobii SW Released.")] void TobiiSWReleased([out] uint32 argr); + [WmiMethodId(162), Implemented, read, write, Description("Tobii Camera Power Reset.")] void TobiiCameraPowerReset([out] uint32 argr); + [WmiMethodId(163), Implemented, read, write, Description("Tobii Camera Power On.")] void TobiiCameraPowerOn([out] uint32 argr); + [WmiMethodId(164), Implemented, read, write, Description("Tobii Camera Power Off.")] void TobiiCameraPowerOff([out] uint32 argr); + }; + +Some of these methods get quite intricate so we will describe them using +pseudo-code that vaguely resembles the original ASL code. + +Methods not described in the following document have unknown behavior. + +Argument Structure +------------------ + +All input arguments have type **uint32** and their structure is very similar +between methods. Usually, the first byte corresponds to a specific *operation* +the method performs, and the subsequent bytes correspond to *arguments* passed +to this *operation*. For example, if an operation has code 0x01 and requires an +ID 0xA0, the argument you would pass to the method is 0xA001. + + +Thermal Methods +=============== + +WMI method Thermal_Information([in] uint32 arg2, [out] uint32 argr) +------------------------------------------------------------------- + +:: + + if BYTE_0(arg2) == 0x01: + argr = 1 + + if BYTE_0(arg2) == 0x02: + argr = UNKNOWN_CONSTANT + + if BYTE_0(arg2) == 0x03: + if BYTE_1(arg2) == 0x00: + argr = FAN_ID_0 + + if BYTE_1(arg2) == 0x01: + argr = FAN_ID_1 + + if BYTE_1(arg2) == 0x02: + argr = FAN_ID_2 + + if BYTE_1(arg2) == 0x03: + argr = FAN_ID_3 + + if BYTE_1(arg2) == 0x04: + argr = SENSOR_ID_CPU | 0x0100 + + if BYTE_1(arg2) == 0x05: + argr = SENSOR_ID_GPU | 0x0100 + + if BYTE_1(arg2) == 0x06: + argr = THERMAL_MODE_QUIET_ID + + if BYTE_1(arg2) == 0x07: + argr = THERMAL_MODE_BALANCED_ID + + if BYTE_1(arg2) == 0x08: + argr = THERMAL_MODE_BALANCED_PERFORMANCE_ID + + if BYTE_1(arg2) == 0x09: + argr = THERMAL_MODE_PERFORMANCE_ID + + if BYTE_1(arg2) == 0x0A: + argr = THERMAL_MODE_LOW_POWER_ID + + if BYTE_1(arg2) == 0x0B: + argr = THERMAL_MODE_GMODE_ID + + else: + argr = 0xFFFFFFFF + + if BYTE_0(arg2) == 0x04: + if is_valid_sensor(BYTE_1(arg2)): + argr = SENSOR_TEMP_C + else: + argr = 0xFFFFFFFF + + if BYTE_0(arg2) == 0x05: + if is_valid_fan(BYTE_1(arg2)): + argr = FAN_RPM() + + if BYTE_0(arg2) == 0x06: + skip + + if BYTE_0(arg2) == 0x07: + argr = 0 + + If BYTE_0(arg2) == 0x08: + if is_valid_fan(BYTE_1(arg2)): + argr = 0 + else: + argr = 0xFFFFFFFF + + if BYTE_0(arg2) == 0x09: + if is_valid_fan(BYTE_1(arg2)): + argr = FAN_UNKNOWN_STAT_0() + + else: + argr = 0xFFFFFFFF + + if BYTE_0(arg2) == 0x0A: + argr = THERMAL_MODE_BALANCED_ID + + if BYTE_0(arg2) == 0x0B: + argr = CURRENT_THERMAL_MODE() + + if BYTE_0(arg2) == 0x0C: + if is_valid_fan(BYTE_1(arg2)): + argr = FAN_UNKNOWN_STAT_1() + else: + argr = 0xFFFFFFFF + +Operation 0x03 list all available fan IDs, sensor IDs and thermal profile +codes in order, but different models may have different number of fans and +thermal profiles. These are the known ranges: + +* Fan IDs: from 2 up to 4 +* Sensor IDs: 2 +* Thermal profile codes: from 1 up to 7 + +In total BYTE_1(ARG2) may range from 0x5 up to 0xD depending on the model. + +WMI method Thermal_Control([in] uint32 arg2, [out] uint32 argr) +--------------------------------------------------------------- + +:: + + if BYTE_0(arg2) == 0x01: + if is_valid_thermal_profile(BYTE_1(arg2)): + SET_THERMAL_PROFILE(BYTE_1(arg2)) + argr = 0 + + if BYTE_0(arg2) == 0x02: + if is_valid_fan(BYTE_1(arg2)): + SET_FAN_SPEED_MULTIPLIER(BYTE_2(arg2)) + argr = 0 + else: + argr = 0xFFFFFFFF + +.. note:: + While you can manually change the fan speed multiplier with this method, + Dell's BIOS tends to overwrite this changes anyway. + +These are the known thermal profile codes: + +:: + + CUSTOM 0x00 + + BALANCED_USTT 0xA0 + BALANCED_PERFORMANCE_USTT 0xA1 + COOL_USTT 0xA2 + QUIET_USTT 0xA3 + PERFORMANCE_USTT 0xA4 + LOW_POWER_USTT 0xA5 + + QUIET 0x96 + BALANCED 0x97 + BALANCED_PERFORMANCE 0x98 + PERFORMANCE 0x99 + + GMODE 0xAB + +Usually if a model doesn't support the first four profiles they will support +the User Selectable Thermal Tables (USTT) profiles and vice-versa. + +GMODE replaces PERFORMANCE in G-Series laptops. + +WMI method GameShiftStatus([in] uint32 arg2, [out] uint32 argr) +--------------------------------------------------------------- + +:: + + if BYTE_0(arg2) == 0x1: + TOGGLE_GAME_SHIFT() + argr = GET_GAME_SHIFT_STATUS() + + if BYTE_0(arg2) == 0x2: + argr = GET_GAME_SHIFT_STATUS() + +Game Shift Status does not change the fan speed profile but it could be some +sort of CPU/GPU power profile. Benchmarks have not been done. + +This method is only present on Dell's G-Series laptops and it's implementation +implies GMODE thermal profile is available, even if operation 0x03 of +Thermal_Information does not list it. + +G-key on Dell's G-Series laptops also changes Game Shift status, so both are +directly related. + +WMI method GetFanSensors([in] uint32 arg2, [out] uint32 argr) +------------------------------------------------------------- + +:: + + if BYTE_0(arg2) == 0x1: + if is_valid_fan(BYTE_1(arg2)): + argr = 1 + else: + argr = 0 + + if BYTE_0(arg2) == 0x2: + if is_valid_fan(BYTE_1(arg2)): + if BYTE_2(arg2) == 0: + argr == SENSOR_ID + else + argr == 0xFFFFFFFF + else: + argr = 0 + +Overclocking Methods +==================== + +.. warning:: + These methods have not been tested and are only partially reverse + engineered. + +WMI method Return_OverclockingReport([out] uint32 argr) +------------------------------------------------------- + +:: + + CSMI (0xE3, 0x99) + argr = 0 + +CSMI is an unknown operation. + +WMI method Set_OCUIBIOSControl([in] uint32 arg2, [out] uint32 argr) +------------------------------------------------------------------- + +:: + + CSMI (0xE3, 0x99) + argr = 0 + +CSMI is an unknown operation. + +WMI method Clear_OCFailSafeFlag([out] uint32 argr) +-------------------------------------------------- + +:: + + CSMI (0xE3, 0x99) + argr = 0 + +CSMI is an unknown operation. + + +WMI method MemoryOCControl([in] uint32 arg2, [out] uint32 argr) +--------------------------------------------------------------- + +AWCC supports memory overclocking, but this method is very intricate and has +not been deciphered yet. + +GPIO methods +============ + +These methods are probably related to some kind of firmware update system, +through a GPIO device. + +.. warning:: + These methods have not been tested and are only partially reverse + engineered. + +WMI method FWUpdateGPIOtoggle([in] uint32 arg2, [out] uint32 argr) +------------------------------------------------------------------ + +:: + + if BYTE_0(arg2) == 0: + if BYTE_1(arg2) == 1: + SET_PIN_A_HIGH() + else: + SET_PIN_A_LOW() + + if BYTE_0(arg2) == 1: + if BYTE_1(arg2) == 1: + SET_PIN_B_HIGH() + + else: + SET_PIN_B_LOW() + + else: + argr = 1 + +WMI method ReadTotalofGPIOs([out] uint32 argr) +---------------------------------------------- + +:: + + argr = 0x02 + +WMI method ReadGPIOpPinStatus([in] uint32 arg2, [out] uint32 argr) +------------------------------------------------------------------ + +:: + + if BYTE_0(arg2) == 0: + argr = PIN_A_STATUS + + if BYTE_0(arg2) == 1: + argr = PIN_B_STATUS + +Other information Methods +========================= + +WMI method ReadChassisColor([out] uint32 argr) +---------------------------------------------- + +:: + + argr = CHASSIS_COLOR_ID + +Acknowledgements +================ + +Kudos to `AlexIII `_ for documenting +and testing available thermal profile codes. + diff --git a/MAINTAINERS b/MAINTAINERS index c27f31907..25f6de4c2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -792,6 +792,7 @@ F: drivers/perf/alibaba_uncore_drw_pmu.c ALIENWARE WMI DRIVER L: Dell.Client.Kernel@dell.com S: Maintained +F: Documentation/wmi/devices/alienware-wmi.rst F: drivers/platform/x86/dell/alienware-wmi.c ALLEGRO DVT VIDEO IP CORE DRIVER