From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6307CC2BB45 for ; Sun, 14 Aug 2022 15:52:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241941AbiHNPwl (ORCPT ); Sun, 14 Aug 2022 11:52:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40712 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242027AbiHNPu6 (ORCPT ); Sun, 14 Aug 2022 11:50:58 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1679AB4B5; Sun, 14 Aug 2022 08:36:42 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id B951EB80B43; Sun, 14 Aug 2022 15:36:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BABCEC433C1; Sun, 14 Aug 2022 15:36:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660491399; bh=CZzuY3a27j4F+CBOVWD7MeVGBQoD3tKsr9GhoUeeke8=; h=From:To:Cc:Subject:Date:From; b=kyfe7Dz+QpJbK7nAV4PR0WajqPWm/7irEtEO1s3QdKakGqwhxC79bN3ytvtoQ1XyY LVjzk19MmOBvAbRXvpp9sb+zrv/o4pr9hrkGlegkBuUGCUiQHmTuocAWInXJnmpEvD e789Hj8vjaieIYis0JPeB9DlFNkvjaiIpwkCDea6NVzZDV9e+0zIFLxXLUZbtSC6jn 9rlDqmspEUfBY5O7W6tvMMSV4MDvEvC70nUdSGw2SYYx1YlEvorO4YxmUnVTooiN1z s0pL6nmCukDVIW1PWvwjTWfpz04m0e/LqJi432BaK7ltaHoirgySpak88y2LIVm9IK 4JQG3K74pPp5Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Pavan Chebbi , Michael Chan , Bjorn Helgaas , Sasha Levin , linux-pci@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 1/9] PCI: Add ACS quirk for Broadcom BCM5750x NICs Date: Sun, 14 Aug 2022 11:36:28 -0400 Message-Id: <20220814153637.2380406-1-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Pavan Chebbi [ Upstream commit afd306a65cedb9589564bdb23a0c368abc4215fd ] The Broadcom BCM5750x NICs may be multi-function devices. They do not advertise ACS capability. Peer-to-peer transactions are not possible between the individual functions, so it is safe to treat them as fully isolated. Add an ACS quirk for these devices so the functions can be in independent IOMMU groups and attached individually to userspace applications using VFIO. Link: https://lore.kernel.org/r/1654796507-28610-1-git-send-email-michael.chan@broadcom.com Signed-off-by: Pavan Chebbi Signed-off-by: Michael Chan Signed-off-by: Bjorn Helgaas Signed-off-by: Sasha Levin --- drivers/pci/quirks.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 98327966e5b4..0a116359b5c7 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4760,6 +4760,9 @@ static const struct pci_dev_acs_enabled { { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs }, /* Broadcom multi-function device */ { PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_BROADCOM, 0x1750, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_BROADCOM, 0x1751, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_BROADCOM, 0x1752, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs }, { 0 } }; -- 2.35.1