From nobody Sat Sep 27 20:21:03 2025 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 F20F4C32774 for ; Tue, 23 Aug 2022 10:18:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353723AbiHWKSM (ORCPT ); Tue, 23 Aug 2022 06:18:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58334 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352547AbiHWKIC (ORCPT ); Tue, 23 Aug 2022 06:08:02 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2E6B458090; Tue, 23 Aug 2022 01:54:21 -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 dfw.source.kernel.org (Postfix) with ESMTPS id BE98B61377; Tue, 23 Aug 2022 08:54:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA2B5C433D6; Tue, 23 Aug 2022 08:54:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1661244860; bh=gLh/IqF4UW/uFOYR8tsOEPV+3tgPe4SDpXMVoAg0AvI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vJmYFFs9sWxqfE74E5pLz1dOq11EH655/Z4ZjsHwZNNoaRT1rfClXVLA/NP5eydL+ ryVonBeKDE+EQJKrirZ4BejlktyKAMdosfWtcTEDRLAImIIWNEP979wkmLrD+Tzuqu 70KgiO36dW4Vkll/kcWpnWBK0aWexq0cWFQKRWG0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pavan Chebbi , Michael Chan , Bjorn Helgaas , Sasha Levin Subject: [PATCH 5.15 163/244] PCI: Add ACS quirk for Broadcom BCM5750x NICs Date: Tue, 23 Aug 2022 10:25:22 +0200 Message-Id: <20220823080104.649678654@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220823080059.091088642@linuxfoundation.org> References: <20220823080059.091088642@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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.c= han@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 4893b1e82403..a531064233f9 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4923,6 +4923,9 @@ 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 }, /* Amazon Annapurna Labs */ { PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs }, --=20 2.35.1