From patchwork Wed Jan 23 18:27:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Knut Omang X-Patchwork-Id: 10777673 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 09ED7913 for ; Wed, 23 Jan 2019 18:30:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EFB162DA25 for ; Wed, 23 Jan 2019 18:30:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id ED1612DA53; Wed, 23 Jan 2019 18:30:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7E8232DA25 for ; Wed, 23 Jan 2019 18:30:52 +0000 (UTC) Received: from localhost ([127.0.0.1]:39940 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gmNIZ-0006Vs-Me for patchwork-qemu-devel@patchwork.kernel.org; Wed, 23 Jan 2019 13:30:51 -0500 Received: from eggs.gnu.org ([209.51.188.92]:58730) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gmNHB-0005GW-FC for qemu-devel@nongnu.org; Wed, 23 Jan 2019 13:29:26 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gmNH9-00061x-Me for qemu-devel@nongnu.org; Wed, 23 Jan 2019 13:29:25 -0500 Received: from userp2130.oracle.com ([156.151.31.86]:51798) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gmNH9-0005zF-AX for qemu-devel@nongnu.org; Wed, 23 Jan 2019 13:29:23 -0500 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.22/8.16.0.22) with SMTP id x0NINaV1135985; Wed, 23 Jan 2019 18:29:16 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=corp-2018-07-02; bh=m77M/Fy152nFjojdFPVMzyoz03oCDUSyO57xN0lM4HQ=; b=C3hOEy6tn1wDQVxODRjxHXjIQvzkNAtrYy1ClFYH3x2hu2EY4UXVZUZ5ZB5vqnuD56Vh XOx7FaNBlZW9DwmrtLujyriHRY880IbpNXnKpgblEym1heO/ZpARG9ZJ6rgOP+359ZwN JFdDZeoudQFZLKfVYFw+FoFHVNUFrL2Eq1ratap7cSj45RiIfomJxQDdDkBi4pyy1mKL fI/7fvyExdZYvxY449TGq/OHHuuU+0JapbF1Z036xps4TOhSk2JU3v1hY9kQGfAIPJEQ t1fHU9HgYhbgvOsNxcRue1yuHpz2MsVYPhodqzPl4kqTgVQadAQQIO+gO4E6xhQGd7XT Ww== Received: from userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by userp2130.oracle.com with ESMTP id 2q3uauunjs-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 23 Jan 2019 18:29:16 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userv0021.oracle.com (8.14.4/8.14.4) with ESMTP id x0NITGb0003484 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 23 Jan 2019 18:29:16 GMT Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x0NITFoA015754; Wed, 23 Jan 2019 18:29:15 GMT Received: from abi.no.oracle.com (/10.172.144.123) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 23 Jan 2019 10:29:15 -0800 From: Knut Omang To: qemu-devel@nongnu.org Date: Wed, 23 Jan 2019 19:27:59 +0100 Message-Id: X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9145 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=576 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901230135 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 156.151.31.86 Subject: [Qemu-devel] [PATCH 1/2] pcie: Add a simple PCIe ACS (Access Control Services) helper function X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Michael S . Tsirkin" , Stefan Hajnoczi , Elijah Shakkour , Knut Omang , Alex Williamson , Tal Attaly Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add a helper function to add PCIe capability for Access Control Services (ACS) ACS support in the associated root port is a prerequisite to be able to do useful passthrough with VFIO without Alex Williamson's pcie_acs_override kernel patch. Signed-off-by: Knut Omang --- hw/pci/pcie.c | 14 ++++++++++++++ include/hw/pci/pcie.h | 1 + include/hw/pci/pcie_regs.h | 4 ++++ 3 files changed, 19 insertions(+) diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c index 230478f..18feff5 100644 --- a/hw/pci/pcie.c +++ b/hw/pci/pcie.c @@ -906,3 +906,17 @@ void pcie_ats_init(PCIDevice *dev, uint16_t offset) pci_set_word(dev->wmask + dev->exp.ats_cap + PCI_ATS_CTRL, 0x800f); } + +/* Add an ACS (Access Control Services) capability */ +void pcie_acs_init(PCIDevice *dev, uint16_t offset, uint8_t egress_ctrl_vec_sz) +{ + int ectrl_words = (egress_ctrl_vec_sz + 31) & ~31; + pcie_add_capability(dev, PCI_EXT_CAP_ID_ACS, PCI_ACS_VER, + offset, PCI_ACS_SIZEOF + ectrl_words); + pci_set_word(dev->config + offset + PCI_ACS_CAP, + PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); + pci_set_word(dev->config + offset + PCI_ACS_CTRL, + PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); + /* Make CTRL register writable */ + memset(dev->wmask + offset + PCI_ACS_CTRL, 0xff, 2); +} diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h index 5b82a0d..c2da148 100644 --- a/include/hw/pci/pcie.h +++ b/include/hw/pci/pcie.h @@ -129,6 +129,7 @@ void pcie_add_capability(PCIDevice *dev, void pcie_sync_bridge_lnk(PCIDevice *dev); void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn); +void pcie_acs_init(PCIDevice *dev, uint16_t offset, uint8_t egress_ctrl_vec_sz); void pcie_dev_ser_num_init(PCIDevice *dev, uint16_t offset, uint64_t ser_num); void pcie_ats_init(PCIDevice *dev, uint16_t offset); diff --git a/include/hw/pci/pcie_regs.h b/include/hw/pci/pcie_regs.h index ad4e780..5e7409c 100644 --- a/include/hw/pci/pcie_regs.h +++ b/include/hw/pci/pcie_regs.h @@ -175,4 +175,8 @@ typedef enum PCIExpLinkWidth { PCI_ERR_COR_INTERNAL | \ PCI_ERR_COR_HL_OVERFLOW) +/* ACS */ +#define PCI_ACS_VER 0x2 +#define PCI_ACS_SIZEOF 8 + #endif /* QEMU_PCIE_REGS_H */