From patchwork Tue Jun 25 09:38:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shradha Todi X-Patchwork-Id: 1952034 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=samsung.com header.i=@samsung.com header.a=rsa-sha256 header.s=mail20170921 header.b=pWPexEsP; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=139.178.88.99; helo=sv.mirrors.kernel.org; envelope-from=linux-pci+bounces-9226-incoming=patchwork.ozlabs.org@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org [139.178.88.99]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4W7hHV4L09z20ZS for ; Tue, 25 Jun 2024 20:42:46 +1000 (AEST) Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id AAB2E284B11 for ; Tue, 25 Jun 2024 10:42:44 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2F8601494A8; Tue, 25 Jun 2024 10:42:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="pWPexEsP" X-Original-To: linux-pci@vger.kernel.org Received: from mailout2.samsung.com (mailout2.samsung.com [203.254.224.25]) (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 727251474D0 for ; Tue, 25 Jun 2024 10:42:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=203.254.224.25 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719312149; cv=none; b=uEj1rqopEMs++behBYNGRoaUvRSSlTB16U3PdA2PGVCfZUBLx81IIXzC8MChzrDn1L0ze0ma2sQUZsD/h4xaAoHeJfZyWYbEzK2OSPJDncqd7S1TN7PQ/5zhffq49p4lg6LA0GrOLjr81hwl5N1j4KJYv8LRA0GAxFeTK4ErKcw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719312149; c=relaxed/simple; bh=6KrXYEf8wGFjaLshNTiZtHaSZaaNoK9JMgiPMRH30qA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:Content-Type: References; b=GnY89hAAv0ELvN93VHG7EoGeSweAsYeWsVHCqnArj/rOFwRNKQ/7ujuzFkNRVYjfaoCWFhiPFfZ1zKwoFbhxkL9YqR2qf23y1w5qH4AQ+TZX1mPd3NCMlq0S2dcr1yMoj90uvBYWUi39C40SH3q+dMGl/du9eYxoyken3gUEbOo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com; spf=pass smtp.mailfrom=samsung.com; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b=pWPexEsP; arc=none smtp.client-ip=203.254.224.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=samsung.com Received: from epcas5p1.samsung.com (unknown [182.195.41.39]) by mailout2.samsung.com (KnoxPortal) with ESMTP id 20240625104217epoutp02c52af23b9497b59bf509a05ae06a0ce8~cOUeSR_Ps1813418134epoutp02g for ; Tue, 25 Jun 2024 10:42:17 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.samsung.com 20240625104217epoutp02c52af23b9497b59bf509a05ae06a0ce8~cOUeSR_Ps1813418134epoutp02g DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1719312137; bh=6yld1bCPr74Qe1sN64WqEsgYrzcBqzUgAazHIDLZ5F4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pWPexEsPbnCpzj5aMPn2MzuCWkAG4Q9KorExlc/Yx5dZUl4nPpQsl1LadCjcLj0DF VsRUxw7R5kI4YATGo1SyGYXpZAcNrzWrfuhvv0Z82Aa+jC8GOoDo+PI3kQdMCCZGga mgwexzFZTJHCk3jN20rf7V2puSGYJMwnpVkcLZBg= Received: from epsnrtp1.localdomain (unknown [182.195.42.162]) by epcas5p1.samsung.com (KnoxPortal) with ESMTP id 20240625104216epcas5p1dda466c739eec497c2087cb659fa9295~cOUd23bbv0880508805epcas5p1L; Tue, 25 Jun 2024 10:42:16 +0000 (GMT) Received: from epsmgec5p1new.samsung.com (unknown [182.195.38.177]) by epsnrtp1.localdomain (Postfix) with ESMTP id 4W7hGt49Wdz4x9Q2; Tue, 25 Jun 2024 10:42:14 +0000 (GMT) Received: from epcas5p3.samsung.com ( [182.195.41.41]) by epsmgec5p1new.samsung.com (Symantec Messaging Gateway) with SMTP id C2.AB.07307.60F9A766; Tue, 25 Jun 2024 19:42:14 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p2.samsung.com (KnoxPortal) with ESMTPA id 20240625094438epcas5p2760f4d1537d86541940177543cea5aa8~cNiJW_IqN1995319953epcas5p2L; Tue, 25 Jun 2024 09:44:38 +0000 (GMT) Received: from epsmgmcp1.samsung.com (unknown [182.195.42.82]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20240625094438epsmtrp2fefc84e91c9c0e5e7a9bbba1bf545a49~cNiJWDRb31814418144epsmtrp2t; Tue, 25 Jun 2024 09:44:38 +0000 (GMT) X-AuditID: b6c32a44-18dff70000011c8b-bb-667a9f06762f Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgmcp1.samsung.com (Symantec Messaging Gateway) with SMTP id B9.9E.18846.6819A766; Tue, 25 Jun 2024 18:44:38 +0900 (KST) Received: from cheetah.sa.corp.samsungelectronics.net (unknown [107.109.115.53]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20240625094436epsmtip18c17029cbd899d460df60f24ed25d3b9~cNiHB-zKt0553505535epsmtip1H; Tue, 25 Jun 2024 09:44:36 +0000 (GMT) From: Shradha Todi To: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Cc: manivannan.sadhasivam@linaro.org, lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, jingoohan1@gmail.com, fancer.lancer@gmail.com, yoshihiro.shimoda.uh@renesas.com, conor.dooley@microchip.com, pankaj.dubey@samsung.com, gost.dev@samsung.com, Shradha Todi Subject: [PATCH 1/3] PCI: dwc: Add support for vendor specific capability search Date: Tue, 25 Jun 2024 15:08:11 +0530 Message-Id: <20240625093813.112555-2-shradha.t@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240625093813.112555-1-shradha.t@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprEJsWRmVeSWpSXmKPExsWy7bCmpi7b/Ko0g0kX5CyWNGVYTNm0g91i Q8ccVoubB3YyWaz4MpPdoqHnN6vF5V1z2CzOzjvOZtHyp4XF4m5LJ6vFoq1f2C3+7wHq6D1c a/F172c2Bz6PnbPusnss2FTqsWlVJ5vHnWt72DyeXJnO5HHnx1JGj29nJrJ49G1ZxejxeZNc AGdUtk1GamJKapFCal5yfkpmXrqtkndwvHO8qZmBoa6hpYW5kkJeYm6qrZKLT4CuW2YO0OlK CmWJOaVAoYDE4mIlfTubovzSklSFjPziElul1IKUnAKTAr3ixNzi0rx0vbzUEitDAwMjU6DC hOyMOf1PWAve8FVsWfuKqYHxFU8XIweHhICJxPyepC5GTg4hgd2MEo9fKXYxcgHZnxgl/r0/ xQ7n9K49wwpSBdJw9/4nRojETkaJR/3vmCHaW5kkLu0zA7HZBLQkGr92gcVFBKwlDrdvYQNp YBbYxSTR8+QcI0hCWCBIYtHK50wgNouAqsTBeXfYQGxeoIZ7X14wQmyTl1i94QAzyKmcAjYS Ey8rgcyREJjIIbF16lcmiBoXiaaGU2wQtrDEq+Nb2CFsKYnP7/ZCxdMlVm6ewQxh50h827wE qtde4sCVOSwg85kFNCXW79KHCMtKTD21DqyEWYBPovf3E6hyXokd82BsZYkvf/ewQNiSEvOO XYYGkIfEh72v2SAB1M8o8fzaG8YJjHKzEFYsYGRcxSiZWlCcm56abFpgmJdaDo+z5PzcTYzg xKnlsoPxxvx/eocYmTgYDzFKcDArifCGllSlCfGmJFZWpRblxxeV5qQWH2I0BYbfRGYp0eR8 YOrOK4k3NLE0MDEzMzOxNDYzVBLnfd06N0VIID2xJDU7NbUgtQimj4mDU6qBaVqF8qQDQpeX zpo4N2P+RcFvc1OZGN7ou5Zwa3WfdrCfm7+VU7YsiW+X8aROkw+Nd5dr252STNhdevetaPT+ 9v63Xy9O0djeybk4KO1Jz6tzsvfMWmxaq019Nt9x3pq6rL6n9lPLxZt3vntO4zoisDFEYWKC lqZsdu4SFoPTNTcUgmY4lovN0l7wZnJb2R2x5b+rQ+J2fpbU4D0ozlvREcTv+sL2+Kd5jk8P M7jwf1wRaZFlfilM+PM1/wk7xeRn2uworPjCYzTVb8auts4wh+rZXZOXGVk9mN486Yvy/SaH dQebGe9e9bukK2MzeeLuHV9Mr73YubH3g/rRN5pVMifuFqw22JPQl1e19WVTiRJLcUaioRZz UXEiABUhS+8lBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrOLMWRmVeSWpSXmKPExsWy7bCSnG7bxKo0g0+HdC2WNGVYTNm0g91i Q8ccVoubB3YyWaz4MpPdoqHnN6vF5V1z2CzOzjvOZtHyp4XF4m5LJ6vFoq1f2C3+7wHq6D1c a/F172c2Bz6PnbPusnss2FTqsWlVJ5vHnWt72DyeXJnO5HHnx1JGj29nJrJ49G1ZxejxeZNc AGcUl01Kak5mWWqRvl0CV8ac/iesBW/4KrasfcXUwPiKp4uRk0NCwETi7v1PjF2MXBxCAtsZ JW61n2KDSEhKfL64jgnCFpZY+e85O0RRM5PEkmczmUESbAJaEo1fu8BsEQFbifuPJrOCFDEL nGCSuD15AytIQlggQOLLyjZ2EJtFQFXi4Lw7YBt4Bawl7n15wQixQV5i9YYDQIM4ODgFbCQm XlYCCQsBldy98pd1AiPfAkaGVYyiqQXFuem5yQWGesWJucWleel6yfm5mxjBYa0VtINx2fq/ eocYmTgYDzFKcDArifCGllSlCfGmJFZWpRblxxeV5qQWH2KU5mBREudVzulMERJITyxJzU5N LUgtgskycXBKNTA1XYuKnxew3OtIpNTs/0v2ap37aXpaLmLuT/HT5xtVz1jMuTI1tubr74PP lULe/lrkun3H5cO5V3M8t++Qtk653PHy9q7E43PXrb9VUu0RZHf467cXRxpjlW0/va2/G3FQ Q3E9R1yS581/rz1mbungNKn0Nqg6cXuVlFuZ40XW/81qyeV+5/ctqys7+fx/WiAbW8/LyHmn G54otHkkCiz+8vVPfUh3c7BuaLLlm1UaStIKF9lEEhRdrL8/LZzTKT7xxc3wjwHNb7vzbebH HG1f2OY0q+6j34SLnVdmyZ0+JT3f7Zy5EPfXbv5nR9QeX582T8lyu4HM/5V7f3ixMBhyuuz/ XJyR/Mfg/RmfogMeSizFGYmGWsxFxYkASZ61LNoCAAA= X-CMS-MailID: 20240625094438epcas5p2760f4d1537d86541940177543cea5aa8 X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20240625094438epcas5p2760f4d1537d86541940177543cea5aa8 References: <20240625093813.112555-1-shradha.t@samsung.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Add vendor specific extended configuration space capability search API using struct dw_pcie pointer for DW controllers. Signed-off-by: Shradha Todi --- drivers/pci/controller/dwc/pcie-designware.c | 16 ++++++++++++++++ drivers/pci/controller/dwc/pcie-designware.h | 1 + 2 files changed, 17 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 250cf7f40b85..b74e4a97558e 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -275,6 +275,22 @@ static u16 dw_pcie_find_next_ext_capability(struct dw_pcie *pci, u16 start, return 0; } +u16 dw_pcie_find_vsec_capability(struct dw_pcie *pci, u8 vsec_cap) +{ + u16 vsec = 0; + u32 header; + + while ((vsec = dw_pcie_find_next_ext_capability(pci, vsec, + PCI_EXT_CAP_ID_VNDR))) { + header = dw_pcie_readl_dbi(pci, vsec + PCI_VNDR_HEADER); + if (PCI_VNDR_HEADER_ID(header) == vsec_cap) + return vsec; + } + + return 0; +} +EXPORT_SYMBOL_GPL(dw_pcie_find_vsec_capability); + u16 dw_pcie_find_ext_capability(struct dw_pcie *pci, u8 cap) { return dw_pcie_find_next_ext_capability(pci, 0, cap); diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index f8e5431a207b..77686957a30d 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -423,6 +423,7 @@ void dw_pcie_version_detect(struct dw_pcie *pci); u8 dw_pcie_find_capability(struct dw_pcie *pci, u8 cap); u16 dw_pcie_find_ext_capability(struct dw_pcie *pci, u8 cap); +u16 dw_pcie_find_vsec_capability(struct dw_pcie *pci, u8 vsec_cap); int dw_pcie_read(void __iomem *addr, int size, u32 *val); int dw_pcie_write(void __iomem *addr, int size, u32 val);