From patchwork Sat May 22 13:18:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Jonas_Dre=C3=9Fler?= X-Patchwork-Id: 12274523 X-Patchwork-Delegate: bhelgaas@google.com 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 AD6E7C2B9F2 for ; Sat, 22 May 2021 13:21:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8EA356120D for ; Sat, 22 May 2021 13:21:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231191AbhEVNWi (ORCPT ); Sat, 22 May 2021 09:22:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35018 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230492AbhEVNWh (ORCPT ); Sat, 22 May 2021 09:22:37 -0400 Received: from mout-p-201.mailbox.org (mout-p-201.mailbox.org [IPv6:2001:67c:2050::465:201]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 32EC7C061574; Sat, 22 May 2021 06:21:13 -0700 (PDT) Received: from smtp2.mailbox.org (smtp2.mailbox.org [80.241.60.241]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-201.mailbox.org (Postfix) with ESMTPS id 4FnPHq1lHPzQjTw; Sat, 22 May 2021 15:21:11 +0200 (CEST) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from smtp2.mailbox.org ([80.241.60.241]) by spamfilter03.heinlein-hosting.de (spamfilter03.heinlein-hosting.de [80.241.56.117]) (amavisd-new, port 10030) with ESMTP id f9bGRbHX79IB; Sat, 22 May 2021 15:21:07 +0200 (CEST) From: =?utf-8?q?Jonas_Dre=C3=9Fler?= To: Amitkumar Karwar , Ganapathi Bhat , Sharvari Harisangam , Xinming Hu , Kalle Valo , "David S. Miller" , Jakub Kicinski Cc: =?utf-8?q?Jonas_Dre=C3=9Fler?= , Tsuchiya Yuto , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Maximilian Luz , Andy Shevchenko , Bjorn Helgaas , =?utf-8?q?Pali_Roh=C3=A1r?= Subject: [RFC PATCH 1/3] mwifiex: pcie: add DMI-based quirk implementation for Surface devices Date: Sat, 22 May 2021 15:18:25 +0200 Message-Id: <20210522131827.67551-2-verdre@v0yd.nl> In-Reply-To: <20210522131827.67551-1-verdre@v0yd.nl> References: <20210522131827.67551-1-verdre@v0yd.nl> MIME-Version: 1.0 X-MBO-SPAM-Probability: X-Rspamd-Score: -0.93 / 15.00 / 15.00 X-Rspamd-Queue-Id: 1DC551813 X-Rspamd-UID: eb28db Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org This commit adds the ability to apply device-specific quirks to the mwifiex driver. It uses DMI matching similar to the quirks brcmfmac uses with dmi.c. We'll add identifiers to match various MS Surface devices, which this is primarily meant for, later. This commit is a slightly modified version of a previous patch sent in by Tsuchiya Yuto. Co-developed-by: Tsuchiya Yuto Signed-off-by: Tsuchiya Yuto Signed-off-by: Jonas Dreßler --- drivers/net/wireless/marvell/mwifiex/Makefile | 1 + drivers/net/wireless/marvell/mwifiex/pcie.c | 4 +++ drivers/net/wireless/marvell/mwifiex/pcie.h | 1 + .../wireless/marvell/mwifiex/pcie_quirks.c | 32 +++++++++++++++++++ .../wireless/marvell/mwifiex/pcie_quirks.h | 8 +++++ 5 files changed, 46 insertions(+) create mode 100644 drivers/net/wireless/marvell/mwifiex/pcie_quirks.c create mode 100644 drivers/net/wireless/marvell/mwifiex/pcie_quirks.h diff --git a/drivers/net/wireless/marvell/mwifiex/Makefile b/drivers/net/wireless/marvell/mwifiex/Makefile index 162d557b78af..2bd00f40958e 100644 --- a/drivers/net/wireless/marvell/mwifiex/Makefile +++ b/drivers/net/wireless/marvell/mwifiex/Makefile @@ -49,6 +49,7 @@ mwifiex_sdio-y += sdio.o obj-$(CONFIG_MWIFIEX_SDIO) += mwifiex_sdio.o mwifiex_pcie-y += pcie.o +mwifiex_pcie-y += pcie_quirks.o obj-$(CONFIG_MWIFIEX_PCIE) += mwifiex_pcie.o mwifiex_usb-y += usb.o diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c index 94228b316df1..02fdce926de5 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c @@ -27,6 +27,7 @@ #include "wmm.h" #include "11n.h" #include "pcie.h" +#include "pcie_quirks.h" #define PCIE_VERSION "1.0" #define DRV_NAME "Marvell mwifiex PCIe" @@ -410,6 +411,9 @@ static int mwifiex_pcie_probe(struct pci_dev *pdev, return ret; } + /* check quirks */ + mwifiex_initialize_quirks(card); + if (mwifiex_add_card(card, &card->fw_done, &pcie_ops, MWIFIEX_PCIE, &pdev->dev)) { pr_err("%s failed\n", __func__); diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.h b/drivers/net/wireless/marvell/mwifiex/pcie.h index 5ed613d65709..981e330c77d7 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.h +++ b/drivers/net/wireless/marvell/mwifiex/pcie.h @@ -244,6 +244,7 @@ struct pcie_service_card { unsigned long work_flags; bool pci_reset_ongoing; + unsigned long quirks; }; static inline int diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c new file mode 100644 index 000000000000..4064f99b36ba --- /dev/null +++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * File for PCIe quirks. + */ + +/* The low-level PCI operations will be performed in this file. Therefore, + * let's use dev_*() instead of mwifiex_dbg() here to avoid troubles (e.g. + * to avoid using mwifiex_adapter struct before init or wifi is powered + * down, or causes NULL ptr deref). + */ + +#include + +#include "pcie_quirks.h" + +/* quirk table based on DMI matching */ +static const struct dmi_system_id mwifiex_quirk_table[] = { + {} +}; + +void mwifiex_initialize_quirks(struct pcie_service_card *card) +{ + struct pci_dev *pdev = card->dev; + const struct dmi_system_id *dmi_id; + + dmi_id = dmi_first_match(mwifiex_quirk_table); + if (dmi_id) + card->quirks = (uintptr_t)dmi_id->driver_data; + + if (!card->quirks) + dev_info(&pdev->dev, "no quirks enabled\n"); +} diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h new file mode 100644 index 000000000000..7a1fe3b3a61a --- /dev/null +++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Header file for PCIe quirks. + */ + +#include "pcie.h" + +void mwifiex_initialize_quirks(struct pcie_service_card *card); From patchwork Sat May 22 13:18:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Jonas_Dre=C3=9Fler?= X-Patchwork-Id: 12274525 X-Patchwork-Delegate: bhelgaas@google.com 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 529FDC2B9F2 for ; Sat, 22 May 2021 13:21:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37368611AD for ; Sat, 22 May 2021 13:21:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231217AbhEVNWs (ORCPT ); Sat, 22 May 2021 09:22:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35072 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231215AbhEVNWs (ORCPT ); Sat, 22 May 2021 09:22:48 -0400 Received: from mout-p-101.mailbox.org (mout-p-101.mailbox.org [IPv6:2001:67c:2050::465:101]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56482C061574; Sat, 22 May 2021 06:21:23 -0700 (PDT) Received: from smtp2.mailbox.org (smtp2.mailbox.org [IPv6:2001:67c:2050:105:465:1:2:0]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-101.mailbox.org (Postfix) with ESMTPS id 4FnPJ14HWnzQjXk; Sat, 22 May 2021 15:21:21 +0200 (CEST) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from smtp2.mailbox.org ([80.241.60.241]) by spamfilter04.heinlein-hosting.de (spamfilter04.heinlein-hosting.de [80.241.56.122]) (amavisd-new, port 10030) with ESMTP id tR0P-pPKcgrh; Sat, 22 May 2021 15:21:18 +0200 (CEST) From: =?utf-8?q?Jonas_Dre=C3=9Fler?= To: Amitkumar Karwar , Ganapathi Bhat , Sharvari Harisangam , Xinming Hu , Kalle Valo , "David S. Miller" , Jakub Kicinski Cc: =?utf-8?q?Jonas_Dre=C3=9Fler?= , Tsuchiya Yuto , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Maximilian Luz , Andy Shevchenko , Bjorn Helgaas , =?utf-8?q?Pali_Roh=C3=A1r?= Subject: [RFC PATCH 2/3] mwifiex: pcie: add reset_d3cold quirk for Surface gen4+ devices Date: Sat, 22 May 2021 15:18:26 +0200 Message-Id: <20210522131827.67551-3-verdre@v0yd.nl> In-Reply-To: <20210522131827.67551-1-verdre@v0yd.nl> References: <20210522131827.67551-1-verdre@v0yd.nl> MIME-Version: 1.0 X-MBO-SPAM-Probability: X-Rspamd-Score: -0.96 / 15.00 / 15.00 X-Rspamd-Queue-Id: 67ED11806 X-Rspamd-UID: 5d20ca Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Tsuchiya Yuto To reset mwifiex on Surface gen4+ (Pro 4 or later gen) devices, it seems that putting the wifi device into D3cold is required according to errata.inf file on Windows installation (Windows/INF/errata.inf). This patch adds a function that performs power-cycle (put into D3cold then D0) and call the function at the end of reset_prepare(). Note: Need to also reset the parent device (bridge) of wifi on SB1; it might be because the bridge of wifi always reports it's in D3hot. When I tried to reset only the wifi device (not touching parent), it gave the following error and the reset failed: acpi device:4b: Cannot transition to power state D0 for parent in D3hot mwifiex_pcie 0000:03:00.0: can't change power state from D3cold to D0 (config space inaccessible) Signed-off-by: Tsuchiya Yuto Signed-off-by: Jonas Dreßler --- drivers/net/wireless/marvell/mwifiex/pcie.c | 7 + .../wireless/marvell/mwifiex/pcie_quirks.c | 123 ++++++++++++++++++ .../wireless/marvell/mwifiex/pcie_quirks.h | 3 + 3 files changed, 133 insertions(+) diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c index 02fdce926de5..d9acfea395ad 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c @@ -528,6 +528,13 @@ static void mwifiex_pcie_reset_prepare(struct pci_dev *pdev) mwifiex_shutdown_sw(adapter); clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags); clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags); + + /* For Surface gen4+ devices, we need to put wifi into D3cold right + * before performing FLR + */ + if (card->quirks & QUIRK_FW_RST_D3COLD) + mwifiex_pcie_reset_d3cold_quirk(pdev); + mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__); card->pci_reset_ongoing = true; diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c index 4064f99b36ba..b5f214fc1212 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c @@ -15,6 +15,72 @@ /* quirk table based on DMI matching */ static const struct dmi_system_id mwifiex_quirk_table[] = { + { + .ident = "Surface Pro 4", + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 4"), + }, + .driver_data = (void *)QUIRK_FW_RST_D3COLD, + }, + { + .ident = "Surface Pro 5", + .matches = { + /* match for SKU here due to generic product name "Surface Pro" */ + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1796"), + }, + .driver_data = (void *)QUIRK_FW_RST_D3COLD, + }, + { + .ident = "Surface Pro 5 (LTE)", + .matches = { + /* match for SKU here due to generic product name "Surface Pro" */ + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "Surface_Pro_1807"), + }, + .driver_data = (void *)QUIRK_FW_RST_D3COLD, + }, + { + .ident = "Surface Pro 6", + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 6"), + }, + .driver_data = (void *)QUIRK_FW_RST_D3COLD, + }, + { + .ident = "Surface Book 1", + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book"), + }, + .driver_data = (void *)QUIRK_FW_RST_D3COLD, + }, + { + .ident = "Surface Book 2", + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Book 2"), + }, + .driver_data = (void *)QUIRK_FW_RST_D3COLD, + }, + { + .ident = "Surface Laptop 1", + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop"), + }, + .driver_data = (void *)QUIRK_FW_RST_D3COLD, + }, + { + .ident = "Surface Laptop 2", + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Laptop 2"), + }, + .driver_data = (void *)QUIRK_FW_RST_D3COLD, + }, {} }; @@ -29,4 +95,61 @@ void mwifiex_initialize_quirks(struct pcie_service_card *card) if (!card->quirks) dev_info(&pdev->dev, "no quirks enabled\n"); + if (card->quirks & QUIRK_FW_RST_D3COLD) + dev_info(&pdev->dev, "quirk reset_d3cold enabled\n"); +} + +static void mwifiex_pcie_set_power_d3cold(struct pci_dev *pdev) +{ + dev_info(&pdev->dev, "putting into D3cold...\n"); + + pci_save_state(pdev); + if (pci_is_enabled(pdev)) + pci_disable_device(pdev); + pci_set_power_state(pdev, PCI_D3cold); +} + +static int mwifiex_pcie_set_power_d0(struct pci_dev *pdev) +{ + int ret; + + dev_info(&pdev->dev, "putting into D0...\n"); + + pci_set_power_state(pdev, PCI_D0); + ret = pci_enable_device(pdev); + if (ret) { + dev_err(&pdev->dev, "pci_enable_device failed\n"); + return ret; + } + pci_restore_state(pdev); + + return 0; +} + +int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev) +{ + struct pci_dev *parent_pdev = pci_upstream_bridge(pdev); + int ret; + + /* Power-cycle (put into D3cold then D0) */ + dev_info(&pdev->dev, "Using reset_d3cold quirk to perform FW reset\n"); + + /* We need to perform power-cycle also for bridge of wifi because + * on some devices (e.g. Surface Book 1), the OS for some reasons + * can't know the real power state of the bridge. + * When tried to power-cycle only wifi, the reset failed with the + * following dmesg log: + * "Cannot transition to power state D0 for parent in D3hot". + */ + mwifiex_pcie_set_power_d3cold(pdev); + mwifiex_pcie_set_power_d3cold(parent_pdev); + + ret = mwifiex_pcie_set_power_d0(parent_pdev); + if (ret) + return ret; + ret = mwifiex_pcie_set_power_d0(pdev); + if (ret) + return ret; + + return 0; } diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h index 7a1fe3b3a61a..549093067813 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h +++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h @@ -5,4 +5,7 @@ #include "pcie.h" +#define QUIRK_FW_RST_D3COLD BIT(0) + void mwifiex_initialize_quirks(struct pcie_service_card *card); +int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev); From patchwork Sat May 22 13:18:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Jonas_Dre=C3=9Fler?= X-Patchwork-Id: 12274527 X-Patchwork-Delegate: bhelgaas@google.com 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=-18.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,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 E2DBEC2B9F2 for ; Sat, 22 May 2021 13:21:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BFB996120D for ; Sat, 22 May 2021 13:21:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231297AbhEVNW4 (ORCPT ); Sat, 22 May 2021 09:22:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35104 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231309AbhEVNWx (ORCPT ); Sat, 22 May 2021 09:22:53 -0400 Received: from mout-p-202.mailbox.org (mout-p-202.mailbox.org [IPv6:2001:67c:2050::465:202]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3630EC061574; Sat, 22 May 2021 06:21:28 -0700 (PDT) Received: from smtp2.mailbox.org (smtp2.mailbox.org [80.241.60.241]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-202.mailbox.org (Postfix) with ESMTPS id 4FnPJ63g4WzQjmx; Sat, 22 May 2021 15:21:26 +0200 (CEST) X-Virus-Scanned: amavisd-new at heinlein-support.de Received: from smtp2.mailbox.org ([80.241.60.241]) by spamfilter01.heinlein-hosting.de (spamfilter01.heinlein-hosting.de [80.241.56.115]) (amavisd-new, port 10030) with ESMTP id 5KQTvm_awH-q; Sat, 22 May 2021 15:21:22 +0200 (CEST) From: =?utf-8?q?Jonas_Dre=C3=9Fler?= To: Amitkumar Karwar , Ganapathi Bhat , Sharvari Harisangam , Xinming Hu , Kalle Valo , "David S. Miller" , Jakub Kicinski Cc: =?utf-8?q?Jonas_Dre=C3=9Fler?= , Tsuchiya Yuto , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Maximilian Luz , Andy Shevchenko , Bjorn Helgaas , =?utf-8?q?Pali_Roh=C3=A1r?= Subject: [RFC PATCH 3/3] mwifiex: pcie: add reset_wsid quirk for Surface 3 Date: Sat, 22 May 2021 15:18:27 +0200 Message-Id: <20210522131827.67551-4-verdre@v0yd.nl> In-Reply-To: <20210522131827.67551-1-verdre@v0yd.nl> References: <20210522131827.67551-1-verdre@v0yd.nl> MIME-Version: 1.0 X-MBO-SPAM-Probability: X-Rspamd-Score: -3.16 / 15.00 / 15.00 X-Rspamd-Queue-Id: 0D74B1802 X-Rspamd-UID: 56ddeb Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Tsuchiya Yuto This commit adds reset_wsid quirk and uses this quirk for Surface 3 on card reset. To reset mwifiex on Surface 3, it seems that calling the _DSM method exists in \_SB.WSID [1] device is required. On Surface 3, calling the _DSM method removes/re-probes the card by itself. So, need to place the reset function before performing FLR and skip performing any other reset-related works. Note that Surface Pro 3 also has the WSID device [2], but it seems to need more work. This commit only supports Surface 3 yet. [1] https://github.com/linux-surface/acpidumps/blob/05cba925f3a515f222acb5b3551a032ddde958fe/surface_3/dsdt.dsl#L11947-L12011 [2] https://github.com/linux-surface/acpidumps/blob/05cba925f3a515f222acb5b3551a032ddde958fe/surface_pro_3/dsdt.dsl#L12164-L12216 Signed-off-by: Tsuchiya Yuto Signed-off-by: Jonas Dreßler --- drivers/net/wireless/marvell/mwifiex/pcie.c | 10 ++ .../wireless/marvell/mwifiex/pcie_quirks.c | 91 +++++++++++++++++++ .../wireless/marvell/mwifiex/pcie_quirks.h | 6 ++ 3 files changed, 107 insertions(+) diff --git a/drivers/net/wireless/marvell/mwifiex/pcie.c b/drivers/net/wireless/marvell/mwifiex/pcie.c index d9acfea395ad..6e049236ae1a 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie.c @@ -2969,6 +2969,16 @@ static void mwifiex_pcie_card_reset_work(struct mwifiex_adapter *adapter) { struct pcie_service_card *card = adapter->card; + /* On Surface 3, reset_wsid method removes then re-probes card by + * itself. So, need to place it here and skip performing any other + * reset-related works. + */ + if (card->quirks & QUIRK_FW_RST_WSID_S3) { + mwifiex_pcie_reset_wsid_quirk(card->dev); + /* skip performing any other reset-related works */ + return; + } + /* We can't afford to wait here; remove() might be waiting on us. If we * can't grab the device lock, maybe we'll get another chance later. */ diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c index b5f214fc1212..f0a6fa0a7ae5 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c +++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.c @@ -9,10 +9,21 @@ * down, or causes NULL ptr deref). */ +#include #include #include "pcie_quirks.h" +/* For reset_wsid quirk */ +#define ACPI_WSID_PATH "\\_SB.WSID" +#define WSID_REV 0x0 +#define WSID_FUNC_WIFI_PWR_OFF 0x1 +#define WSID_FUNC_WIFI_PWR_ON 0x2 +/* WSID _DSM UUID: "534ea3bf-fcc2-4e7a-908f-a13978f0c7ef" */ +static const guid_t wsid_dsm_guid = + GUID_INIT(0x534ea3bf, 0xfcc2, 0x4e7a, + 0x90, 0x8f, 0xa1, 0x39, 0x78, 0xf0, 0xc7, 0xef); + /* quirk table based on DMI matching */ static const struct dmi_system_id mwifiex_quirk_table[] = { { @@ -81,6 +92,22 @@ static const struct dmi_system_id mwifiex_quirk_table[] = { }, .driver_data = (void *)QUIRK_FW_RST_D3COLD, }, + { + .ident = "Surface 3", + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface 3"), + }, + .driver_data = (void *)QUIRK_FW_RST_WSID_S3, + }, + { + .ident = "Surface Pro 3", + .matches = { + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Pro 3"), + }, + .driver_data = 0, + }, {} }; @@ -97,6 +124,9 @@ void mwifiex_initialize_quirks(struct pcie_service_card *card) dev_info(&pdev->dev, "no quirks enabled\n"); if (card->quirks & QUIRK_FW_RST_D3COLD) dev_info(&pdev->dev, "quirk reset_d3cold enabled\n"); + if (card->quirks & QUIRK_FW_RST_WSID_S3) + dev_info(&pdev->dev, + "quirk reset_wsid for Surface 3 enabled\n"); } static void mwifiex_pcie_set_power_d3cold(struct pci_dev *pdev) @@ -153,3 +183,64 @@ int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev) return 0; } + +int mwifiex_pcie_reset_wsid_quirk(struct pci_dev *pdev) +{ + acpi_handle handle; + union acpi_object *obj; + acpi_status status; + + dev_info(&pdev->dev, "Using reset_wsid quirk to perform FW reset\n"); + + status = acpi_get_handle(NULL, ACPI_WSID_PATH, &handle); + if (ACPI_FAILURE(status)) { + dev_err(&pdev->dev, "No ACPI handle for path %s\n", + ACPI_WSID_PATH); + return -ENODEV; + } + + if (!acpi_has_method(handle, "_DSM")) { + dev_err(&pdev->dev, "_DSM method not found\n"); + return -ENODEV; + } + + if (!acpi_check_dsm(handle, &wsid_dsm_guid, + WSID_REV, WSID_FUNC_WIFI_PWR_OFF)) { + dev_err(&pdev->dev, + "_DSM method doesn't support wifi power off func\n"); + return -ENODEV; + } + + if (!acpi_check_dsm(handle, &wsid_dsm_guid, + WSID_REV, WSID_FUNC_WIFI_PWR_ON)) { + dev_err(&pdev->dev, + "_DSM method doesn't support wifi power on func\n"); + return -ENODEV; + } + + /* card will be removed immediately after this call on Surface 3 */ + dev_info(&pdev->dev, "turning wifi off...\n"); + obj = acpi_evaluate_dsm(handle, &wsid_dsm_guid, + WSID_REV, WSID_FUNC_WIFI_PWR_OFF, + NULL); + if (!obj) { + dev_err(&pdev->dev, + "device _DSM execution failed for turning wifi off\n"); + return -EIO; + } + ACPI_FREE(obj); + + /* card will be re-probed immediately after this call on Surface 3 */ + dev_info(&pdev->dev, "turning wifi on...\n"); + obj = acpi_evaluate_dsm(handle, &wsid_dsm_guid, + WSID_REV, WSID_FUNC_WIFI_PWR_ON, + NULL); + if (!obj) { + dev_err(&pdev->dev, + "device _DSM execution failed for turning wifi on\n"); + return -EIO; + } + ACPI_FREE(obj); + + return 0; +} diff --git a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h index 549093067813..d90ada3f2daa 100644 --- a/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h +++ b/drivers/net/wireless/marvell/mwifiex/pcie_quirks.h @@ -7,5 +7,11 @@ #define QUIRK_FW_RST_D3COLD BIT(0) +/* Surface 3 and Surface Pro 3 have the same _DSM method but need to + * be handled differently. Currently, only S3 is supported. + */ +#define QUIRK_FW_RST_WSID_S3 BIT(1) + void mwifiex_initialize_quirks(struct pcie_service_card *card); int mwifiex_pcie_reset_d3cold_quirk(struct pci_dev *pdev); +int mwifiex_pcie_reset_wsid_quirk(struct pci_dev *pdev);