From patchwork Fri Nov 11 06:21:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Michael Kelley (LINUX)" X-Patchwork-Id: 18495 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:6687:0:0:0:0:0 with SMTP id l7csp574059wru; Thu, 10 Nov 2022 22:28:10 -0800 (PST) X-Google-Smtp-Source: AA0mqf4/Ln97ZBP7CSnCr8M/Jcui85mVl1GqtAQxgSAMO1lpZnPT9tsEelXsFaDkCnPe4ro3ro8G X-Received: by 2002:a17:906:2f85:b0:7ad:88f8:7621 with SMTP id w5-20020a1709062f8500b007ad88f87621mr730924eji.211.1668148090696; Thu, 10 Nov 2022 22:28:10 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1668148090; cv=pass; d=google.com; s=arc-20160816; b=zCRhxFmBUpgPWRbFz0HmTCxnTtJ8gq5i7IFsGborylguHB3lhZWBwzFtamAPTgcrYO 9lpRVesYCeEBQs251JCW3rYNKGYi3At0lCjYMxKNQuQeZiD3c0Rfd3waUfSLk+jVRV3/ Z0KVnjvuDMaKjyBvjoXrelVAWwQvba+CkFtYZjzcRa03UKdavQeL73uq57WL6tLW8OH4 kEFh9/Y8xXd0K7EnWy8NDD/L5mMJN8f5nZGwVifDa0Mu5xOf3sY+MpG9302t8UqMVo7e Qt4VoJHtLYx6+ZTnLytzPv8nWrOE9cznnFAOjxqZYDh0ovzXd99T4Edl7fwLH88FJiIB aQsw== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=uDBf1JoaWPUpyxNyOQTOg3bA8mI88YgxN+97JsIj6Qw=; b=l8Rlot3h7qNZxAc3zcuWm63ao39SOE21+VbaJxtZ4oLwT6RjDLG9xpTS4SlVEszUKm vq51+U1QtCCyE8SgGLcYZv9AGJM9wDLYp/LdToA4QG4UkatW2T1Av20bIgjaY7biUZRP af5OzAX8QqUMSG1IB3hqAeHiMYnn5iOm/DEb6bSU0O6vOnQsja+SMDTiBDeXeEdh2hL1 tzEKI/2lyRCYX205/wumyFwcfLSV+EYCoDCnnoBwY61G2nSnw2TuiF4FeIKDHdJ1Xw8X e4ZJSp4je9N0j0UareMHilma2cuT5pFtswdL5pZXw7AMU0OOjijkk2sApEcr6TOGq7aH J18A== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@microsoft.com header.s=selector2 header.b="V3Z9m4+/"; arc=pass (i=1 spf=pass spfdomain=microsoft.com dkim=pass dkdomain=microsoft.com dmarc=pass fromdomain=microsoft.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=microsoft.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id g5-20020a50d0c5000000b00448d387c327si1495709edf.181.2022.11.10.22.27.47; Thu, 10 Nov 2022 22:28:10 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@microsoft.com header.s=selector2 header.b="V3Z9m4+/"; arc=pass (i=1 spf=pass spfdomain=microsoft.com dkim=pass dkdomain=microsoft.com dmarc=pass fromdomain=microsoft.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=microsoft.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233084AbiKKG0Z (ORCPT + 99 others); Fri, 11 Nov 2022 01:26:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233037AbiKKGZs (ORCPT ); Fri, 11 Nov 2022 01:25:48 -0500 Received: from na01-obe.outbound.protection.outlook.com (mail-eastusazon11022025.outbound.protection.outlook.com [52.101.53.25]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C6BA72980; Thu, 10 Nov 2022 22:23:02 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Sjh3I7olrqLnIg1yZuKP3kMp2lmHS2S+PxCPx8DUv3/uBDuizxkJqBtDE2kjjBVdg5hI/YDBa33CCWNPO3wtuocThY/1SJAOy+BWNHH38QGXtxfhPuRFfu26zjjECwgZL65klEgUsK/WHhEXkyBwTs/ODMF1RBMWJjoRLQU41kq4AzpOZ4sUTay1/+i4xEdwZkBagjIqEutdjxl6ipq67CBrb3/mzntjJXf8V66tWCzakyPHnMYjuOkYQ2kIKMoeHMUpvopMy043U1x8Reudjx+0VfpsqsZXsQ0L915m+ZwpdYklrMMfZTngGJxU32IxdKZyCfbyxyyRZuunm25KSg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=uDBf1JoaWPUpyxNyOQTOg3bA8mI88YgxN+97JsIj6Qw=; b=oOtdhNZxYROBUf1jaoeuYOKW4IQOEnQEIGJDFfPlsLXlvyI+Yz6f2D5IflwZXWlLAgKMXZLt1KonceM6TBssp5FR9V8n8SqsKo6f56ZpdEOZHd5mdheqQo9Vwe6aP8wp7rR5Wr/t2eLDNyn5CA1CYygaSH7tkv70DuT/ls7PAJ/qMLZ6ZP0vKczzapxfMlL2PfnqiC+Dvy5sP+cL5o+zgz553p2KH3hUKH0vRyWblox3um3DtmxCqbEd88iiQr7GJJxf94HDQPtVkoWK3BqnD0gt8/ftLntcvPrrBoilVpiQjTdt/BG8iDUW3+0N0phDtq1Ol+3nfltgKxHF9SiT2Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=microsoft.com; dmarc=pass action=none header.from=microsoft.com; dkim=pass header.d=microsoft.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=uDBf1JoaWPUpyxNyOQTOg3bA8mI88YgxN+97JsIj6Qw=; b=V3Z9m4+/0q+0NU3BFkvQYq6svuO8j/ukKtStAxEGI5fj4G2mVEg/9ShIjYOUi8/z8p5eggt4OvW+B0viHpmTyC9KAOa7nL7t59aSfPvVRCPCglcL3rD0AONc2m2PmJUCqtWqKNrxg90l6cGVa8YFfbQlFSBEKxDy7oHRtjNxVKw= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=microsoft.com; Received: from DM6PR21MB1370.namprd21.prod.outlook.com (2603:10b6:5:16b::28) by MW4PR21MB1857.namprd21.prod.outlook.com (2603:10b6:303:74::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5834.2; Fri, 11 Nov 2022 06:22:34 +0000 Received: from DM6PR21MB1370.namprd21.prod.outlook.com ([fe80::c3e3:a6ef:232c:299b]) by DM6PR21MB1370.namprd21.prod.outlook.com ([fe80::c3e3:a6ef:232c:299b%7]) with mapi id 15.20.5834.002; Fri, 11 Nov 2022 06:22:34 +0000 From: Michael Kelley To: hpa@zytor.com, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, luto@kernel.org, peterz@infradead.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, lpieralisi@kernel.org, robh@kernel.org, kw@linux.com, bhelgaas@google.com, arnd@arndb.de, hch@infradead.org, m.szyprowski@samsung.com, robin.murphy@arm.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, Tianyu.Lan@microsoft.com, kirill.shutemov@linux.intel.com, sathyanarayanan.kuppuswamy@linux.intel.com, ak@linux.intel.com, isaku.yamahata@intel.com, dan.j.williams@intel.com, jane.chu@oracle.com, seanjc@google.com, tony.luck@intel.com, x86@kernel.org, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, netdev@vger.kernel.org, linux-pci@vger.kernel.org, linux-arch@vger.kernel.org, iommu@lists.linux.dev Cc: mikelley@microsoft.com Subject: [PATCH v2 11/12] PCI: hv: Add hypercalls to read/write MMIO space Date: Thu, 10 Nov 2022 22:21:40 -0800 Message-Id: <1668147701-4583-12-git-send-email-mikelley@microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1668147701-4583-1-git-send-email-mikelley@microsoft.com> References: <1668147701-4583-1-git-send-email-mikelley@microsoft.com> X-ClientProxiedBy: MW4PR04CA0329.namprd04.prod.outlook.com (2603:10b6:303:82::34) To DM6PR21MB1370.namprd21.prod.outlook.com (2603:10b6:5:16b::28) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6PR21MB1370:EE_|MW4PR21MB1857:EE_ X-MS-Office365-Filtering-Correlation-Id: 62979783-ee3a-4db5-1fdf-08dac3ad1ee4 X-LD-Processed: 72f988bf-86f1-41af-91ab-2d7cd011db47,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM6PR21MB1370.namprd21.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(4636009)(39860400002)(346002)(376002)(366004)(136003)(396003)(451199015)(83380400001)(52116002)(26005)(6666004)(6512007)(186003)(38100700002)(107886003)(2616005)(7406005)(2906002)(316002)(7416002)(6506007)(10290500003)(6486002)(66946007)(66476007)(5660300002)(8936002)(41300700001)(8676002)(4326008)(66556008)(478600001)(38350700002)(36756003)(86362001)(921005)(82960400001)(82950400001);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 62979783-ee3a-4db5-1fdf-08dac3ad1ee4 X-MS-Exchange-CrossTenant-AuthSource: DM6PR21MB1370.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Nov 2022 06:22:34.3403 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: h6n9FMVUVy6erjv8+a3PHIP/JPwwuMjuOH3Bqteaay+QoG1OIqxhWKn5TRqwiiotQ5J9tAchMBwCxdrQ+8xovQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR21MB1857 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_NONE,SPF_HELO_PASS,SPF_NONE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749180052067366991?= X-GMAIL-MSGID: =?utf-8?q?1749180052067366991?= To support PCI pass-thru devices in Confidential VMs, Hyper-V has added hypercalls to read and write MMIO space. Add the appropriate definitions to hyperv-tlfs.h and implement functions to make the hypercalls. These functions are used in a subsequent patch. Co-developed-by: Dexuan Cui Signed-off-by: Dexuan Cui Signed-off-by: Michael Kelley --- arch/x86/include/asm/hyperv-tlfs.h | 3 ++ drivers/pci/controller/pci-hyperv.c | 64 +++++++++++++++++++++++++++++++++++++ include/asm-generic/hyperv-tlfs.h | 22 +++++++++++++ 3 files changed, 89 insertions(+) diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h index 3089ec3..f769b9d 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -117,6 +117,9 @@ /* Recommend using enlightened VMCS */ #define HV_X64_ENLIGHTENED_VMCS_RECOMMENDED BIT(14) +/* Use hypercalls for MMIO config space access */ +#define HV_X64_USE_MMIO_HYPERCALLS BIT(21) + /* * CPU management features identification. * These are HYPERV_CPUID_CPU_MANAGEMENT_FEATURES.EAX bits. diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c index ba64284..09b40a1 100644 --- a/drivers/pci/controller/pci-hyperv.c +++ b/drivers/pci/controller/pci-hyperv.c @@ -1054,6 +1054,70 @@ static int wslot_to_devfn(u32 wslot) return PCI_DEVFN(slot_no.bits.dev, slot_no.bits.func); } +static void hv_pci_read_mmio(struct device *dev, phys_addr_t gpa, int size, u32 *val) +{ + struct hv_mmio_read_input *in; + struct hv_mmio_read_output *out; + u64 ret; + + /* + * Must be called with interrupts disabled so it is safe + * to use the per-cpu input argument page. Use it for + * both input and output. + */ + in = *this_cpu_ptr(hyperv_pcpu_input_arg); + out = *this_cpu_ptr(hyperv_pcpu_input_arg) + sizeof(*in); + in->gpa = gpa; + in->size = size; + + ret = hv_do_hypercall(HVCALL_MMIO_READ, in, out); + if (hv_result_success(ret)) { + switch (size) { + case 1: + *val = *(u8 *)(out->data); + break; + case 2: + *val = *(u16 *)(out->data); + break; + default: + *val = *(u32 *)(out->data); + break; + } + } else + dev_err(dev, "MMIO read hypercall error %llx addr %llx size %d\n", + ret, gpa, size); +} + +static void hv_pci_write_mmio(struct device *dev, phys_addr_t gpa, int size, u32 val) +{ + struct hv_mmio_write_input *in; + u64 ret; + + /* + * Must be called with interrupts disabled so it is safe + * to use the per-cpu input argument memory. + */ + in = *this_cpu_ptr(hyperv_pcpu_input_arg); + in->gpa = gpa; + in->size = size; + switch (size) { + case 1: + *(u8 *)(in->data) = val; + break; + case 2: + *(u16 *)(in->data) = val; + break; + default: + *(u32 *)(in->data) = val; + break; + } + + ret = hv_do_hypercall(HVCALL_MMIO_WRITE, in, NULL); + if (!hv_result_success(ret)) + dev_err(dev, "MMIO write hypercall error %llx addr %llx size %d\n", + ret, gpa, size); +} + /* * PCI Configuration Space for these root PCI buses is implemented as a pair * of pages in memory-mapped I/O space. Writing to the first page chooses diff --git a/include/asm-generic/hyperv-tlfs.h b/include/asm-generic/hyperv-tlfs.h index b17c6ee..fcab07b 100644 --- a/include/asm-generic/hyperv-tlfs.h +++ b/include/asm-generic/hyperv-tlfs.h @@ -168,6 +168,8 @@ struct ms_hyperv_tsc_page { #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0 #define HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY 0x00db +#define HVCALL_MMIO_READ 0x0106 +#define HVCALL_MMIO_WRITE 0x0107 /* Extended hypercalls */ #define HV_EXT_CALL_QUERY_CAPABILITIES 0x8001 @@ -790,4 +792,24 @@ struct hv_memory_hint { union hv_gpa_page_range ranges[]; } __packed; +/* Data structures for HVCALL_MMIO_READ and HVCALL_MMIO_WRITE */ +#define HV_HYPERCALL_MMIO_MAX_DATA_LENGTH 64 + +struct hv_mmio_read_input { + u64 gpa; + u32 size; + u32 reserved; +} __packed; + +struct hv_mmio_read_output { + u8 data[HV_HYPERCALL_MMIO_MAX_DATA_LENGTH]; +} __packed; + +struct hv_mmio_write_input { + u64 gpa; + u32 size; + u32 reserved; + u8 data[HV_HYPERCALL_MMIO_MAX_DATA_LENGTH]; +} __packed; + #endif