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 18CA4C25B06 for ; Sun, 14 Aug 2022 15:42:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241097AbiHNPmZ (ORCPT ); Sun, 14 Aug 2022 11:42:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42514 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241330AbiHNPlT (ORCPT ); Sun, 14 Aug 2022 11:41:19 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 386DE1B7A0; Sun, 14 Aug 2022 08:32:53 -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 AB44FB80B7C; Sun, 14 Aug 2022 15:32:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C218AC43470; Sun, 14 Aug 2022 15:32:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660491171; bh=gLh/IqF4UW/uFOYR8tsOEPV+3tgPe4SDpXMVoAg0AvI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Nbuw1FQTVt1vPhEgkoZLMAv0DupQMFUWB3fbNKCkzahF0fZwoaNtu4EV29PuoGn0e V1a+I7KOEzuKi32JA8lq1t2jVPTaBAs4lRc81w1JQm1/6CaG/xKHPCSUk/l6igWHEV fWR+AOiB/R/8WDorPoqriqbqXS/nfZ/FfbJKTxWDw1WLcgKWXaCKMs2SNn7njGbBxo UddH3XHgRInnLsKcwb9hthZsX+bIe+P1Z28vUg991QhY9nrt7nBsDs2hfPxqtZYDqH v1AZFwVD/7J74nkQpsVRBmwOIgxu4F2BNOb+35Sh/e2ZVSRSghgJv2qBEIinDheLTo wHQaRAjpXcOzQ== 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 5.15 02/46] PCI: Add ACS quirk for Broadcom BCM5750x NICs Date: Sun, 14 Aug 2022 11:32:03 -0400 Message-Id: <20220814153247.2378312-2-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220814153247.2378312-1-sashal@kernel.org> References: <20220814153247.2378312-1-sashal@kernel.org> 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 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 }, -- 2.35.1