From nobody Fri Dec 19 20:53:16 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 3BEB5C38145 for ; Tue, 23 Aug 2022 10:23:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354366AbiHWKVU (ORCPT ); Tue, 23 Aug 2022 06:21:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352899AbiHWKJc (ORCPT ); Tue, 23 Aug 2022 06:09:32 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BA935101A; Tue, 23 Aug 2022 01:55:23 -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 6BDF7B81C28; Tue, 23 Aug 2022 08:55:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 85182C433D6; Tue, 23 Aug 2022 08:55:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1661244921; bh=CZzuY3a27j4F+CBOVWD7MeVGBQoD3tKsr9GhoUeeke8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yEmWpu9Mdt84IVcXApBygCnemvkbzxr88LPPDv+Jzy6nKW352C33CEd/PaWnTeqNU E7GkXr2Nd7/8nJOIVLAOqSMln0lFPLgDguOJeBwaUPP6kOFMtXhfBQ3wworNQWDc8H wCgSoW+lqdVdNcrn5U9RuPH8jXLG5zCtLNdAgC1E= 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 4.14 212/229] PCI: Add ACS quirk for Broadcom BCM5750x NICs Date: Tue, 23 Aug 2022 10:26:13 +0200 Message-Id: <20220823080101.216525898@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220823080053.202747790@linuxfoundation.org> References: <20220823080053.202747790@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 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 } }; --=20 2.35.1