From patchwork Fri Sep 13 12:22:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kitszel, PrzemyslawX" X-Patchwork-Id: 11144679 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CBD2F14E5 for ; Fri, 13 Sep 2019 12:22:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B46BA206BB for ; Fri, 13 Sep 2019 12:22:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728521AbfIMMWm (ORCPT ); Fri, 13 Sep 2019 08:22:42 -0400 Received: from mga18.intel.com ([134.134.136.126]:16890 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726771AbfIMMWm (ORCPT ); Fri, 13 Sep 2019 08:22:42 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Sep 2019 05:22:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,501,1559545200"; d="scan'208,223";a="192708498" Received: from irsmsx101.ger.corp.intel.com ([163.33.3.153]) by FMSMGA003.fm.intel.com with ESMTP; 13 Sep 2019 05:22:40 -0700 Received: from irsmsx102.ger.corp.intel.com ([169.254.2.160]) by IRSMSX101.ger.corp.intel.com ([169.254.1.129]) with mapi id 14.03.0439.000; Fri, 13 Sep 2019 13:22:39 +0100 From: "Kitszel, PrzemyslawX" To: "linux-pci@vger.kernel.org" CC: "Maslowski, Karol" Subject: [PATCH] PCI: Add quirk for VCA NTB Thread-Topic: [PATCH] PCI: Add quirk for VCA NTB Thread-Index: AdVqLdE+OCBbT8aES7KpBccpTfPYBw== Date: Fri, 13 Sep 2019 12:22:38 +0000 Message-ID: <5683A335CC8BE1438C3C30C49DCC38DF637CDE70@IRSMSX102.ger.corp.intel.com> Accept-Language: pl-PL, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-product: dlpe-windows dlp-version: 11.0.600.7 dlp-reaction: no-action x-originating-ip: [163.33.239.180] MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From 863d9ea0d888233dbfcbf52212ae97b2bc557ae6 Mon Sep 17 00:00:00 2001 From: Slawomir Pawlowski Date: Fri, 21 Sep 2018 15:55:12 +0200 Subject: [PATCH] PCI: Add quirk for VCA NTB Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices exposing computational units via Non Transparent Bridges (NTB, PEX 87xx). Similarly to MIC x200, there is need to add DMA aliases to allow buffer access when IOMMU is enabled. Following aliases are allowing host device and computational unit to access each other. Together those aliases marks whole VCA device as one IOMMU group. All possible slot numbers (0x20) are used, sine we are unable to tell what slot is used on other side. This quirk is intended for both host and computational unit sides. The VCA devices have up to 5 functions - 4 for DMA channels and one additional. Signed-off-by: Slawomir Pawlowski Signed-off-by: Przemek Kitszel --- drivers/pci/quirks.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index ded60757a573..349ca28e0ae4 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4062,6 +4062,38 @@ static void quirk_mic_x200_dma_alias(struct pci_dev *pdev) DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias); +/* + * Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices + * exposing computational units via Non Transparent Bridges (NTB, PEX 87xx). + * Similarly to MIC x200, there is need to add DMA aliases to allow buffer + * access when IOMMU is enabled. + * Following aliases are allowing host device and computational unit to access + * each other. Together those aliases marks whole VCA device as one IOMMU group. + * All possible slot numbers (0x20) are used, sine we are unable to tell what + * slot is used on other side. + * This quirk is intended for both host and computational unit sides. + * The VCA devices have up to 5 functions (4 for DMA channels and 1 additional). + */ +static void quirk_pex_vca_alias(struct pci_dev *pdev) +{ + const unsigned int num_pci_slots = 0x20; + unsigned int slot; + + for (slot = 0; slot < num_pci_slots; slot++) { + pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x0)); + pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x1)); + pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x2)); + pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x3)); + pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x4)); + } +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2954, quirk_pex_vca_alias); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2955, quirk_pex_vca_alias); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2956, quirk_pex_vca_alias); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2958, quirk_pex_vca_alias); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2959, quirk_pex_vca_alias); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x295A, quirk_pex_vca_alias); + /* * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are * associated not at the root bus, but at a bridge below. This quirk avoids