| Message ID | cover.1564702313.git.sathyanarayanan.kuppuswamy@linux.intel.com |
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| Headers | show
Return-Path: <linux-pci-owner@vger.kernel.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=<UNKNOWN>) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 4606vj2G7cz9s7T for <incoming@patchwork.ozlabs.org>; Fri, 2 Aug 2019 10:08:49 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727006AbfHBAIq (ORCPT <rfc822;incoming@patchwork.ozlabs.org>); Thu, 1 Aug 2019 20:08:46 -0400 Received: from mga02.intel.com ([134.134.136.20]:59856 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726340AbfHBAIq (ORCPT <rfc822;linux-pci@vger.kernel.org>); Thu, 1 Aug 2019 20:08:46 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Aug 2019 17:08:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,336,1559545200"; d="scan'208";a="177993956" Received: from skuppusw-desk.jf.intel.com ([10.54.74.33]) by orsmga006.jf.intel.com with ESMTP; 01 Aug 2019 17:08:44 -0700 From: sathyanarayanan.kuppuswamy@linux.intel.com To: bhelgaas@google.com Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ashok.raj@intel.com, keith.busch@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com Subject: [PATCH v5 0/7] Fix PF/VF dependency issue Date: Thu, 1 Aug 2019 17:05:57 -0700 Message-Id: <cover.1564702313.git.sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: <linux-pci.vger.kernel.org> X-Mailing-List: linux-pci@vger.kernel.org |
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Fix PF/VF dependency issue
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From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Current implementation of ATS, PASID, PRI does not handle VF dependencies correctly. Following patches addresses this issue. Changes since v4: * Defined empty functions for pci_pri_init() and pci_pasid_init() for cases where CONFIG_PCI_PRI and CONFIG_PCI_PASID are not enabled. Changes since v3: * Fixed critical path (lock context) in pci_restore_*_state functions. Changes since v2: * Added locking mechanism to synchronize accessing PF registers in VF. * Removed spec compliance checks in patches. * Addressed comments from Bjorn Helgaas. Changes since v1: * Added more details about the patches in commit log. * Removed bulk spec check patch. * Addressed comments from Bjorn Helgaas. Kuppuswamy Sathyanarayanan (7): PCI/ATS: Fix pci_prg_resp_pasid_required() dependency issues PCI/ATS: Initialize PRI in pci_ats_init() PCI/ATS: Initialize PASID in pci_ats_init() PCI/ATS: Add PRI support for PCIe VF devices PCI/ATS: Add PASID support for PCIe VF devices PCI/ATS: Disable PF/VF ATS service independently PCI: Skip Enhanced Allocation (EA) initialization for VF device drivers/pci/ats.c | 373 ++++++++++++++++++++++++++++++---------- drivers/pci/pci.c | 7 + include/linux/pci-ats.h | 22 ++- include/linux/pci.h | 7 +- 4 files changed, 315 insertions(+), 94 deletions(-)