From patchwork Fri Feb 24 17:44:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Christie X-Patchwork-Id: 13151586 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 92117C7EE31 for ; Fri, 24 Feb 2023 17:45:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229760AbjBXRpk (ORCPT ); Fri, 24 Feb 2023 12:45:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229745AbjBXRpi (ORCPT ); Fri, 24 Feb 2023 12:45:38 -0500 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C4B96C1AA; Fri, 24 Feb 2023 09:45:36 -0800 (PST) Received: from pps.filterd (m0333521.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 31OHi7GS028907; Fri, 24 Feb 2023 17:45:23 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 : content-transfer-encoding : content-type : mime-version; s=corp-2022-7-12; bh=nvO0TsPJJiE1SXuIrdaGSt7A501kgNQ8eNX/RsAwqLE=; b=SUo//UYAkF6EzJnrgLrBnRPD3gWfk6yq3T2o7GKczH3FTLHuOD5wg82sW9tsMT9jG1Ol WWZGq3sqJsJFZe3l3yD7hnbdKrcU4q+kOEr4sExxQ0qv5hZ4IaE7YHBFeyO6heUZ92cs Y73/g5+JYVxHRe9CglYg+FG+hjzCFqXcckBCpBoPI7VzqpOQGl74eYayMifYoF/4s2b9 EKt+lCd3eRXa/oEJ9XUinIt99AeGuiwPfsRU7Tt3M9oykmNwAO/Cb39+qfU70sWdmKJY OQHeclKr9EGSwippEY5JM5pSjD0h9BrjDRoRcxMh4Br0jnNq06o1bgHxC3YaL3R2OASn IQ== Received: from iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta03.appoci.oracle.com [130.35.103.27]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3ntnkbwk2h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 24 Feb 2023 17:45:22 +0000 Received: from pps.filterd (iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (8.17.1.5/8.17.1.5) with ESMTP id 31OHJGXV031548; Fri, 24 Feb 2023 17:45:21 GMT Received: from nam11-dm6-obe.outbound.protection.outlook.com (mail-dm6nam11lp2170.outbound.protection.outlook.com [104.47.57.170]) by iadpaimrmta03.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3ntn49wjuh-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 24 Feb 2023 17:45:21 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=n5kMGa7NISrLnUzAPHjeXKV2KwUJNVCyVLbc9xELWKh6wTuNAkQvxMwEGbsQRdvg8NlmgHPRHLFnbthCgYEVWZCcrv5JfFjRfTt+CQlv8YmC/2CveJGQL1YAYQb1AJPNDR0o+1hS4s97fVdf/i7cFxidvm9j1YuVhnT6/06hidegRjDordDpsmjOLycBwDM0Gpix7m/SVM+bQ6/J3r78/uKT4v+jXBFzhvACYRpHRPG0duIRtVYHBMG+EXd3pGJi2CRm9SGoSkrzV8LbkHW9W3hbPaIQPqmAsySioVPTXCYAKu5Y1jAjJdhAGX++JUZ6wC+JJDqAfPOd+x4TFOjuFw== 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=nvO0TsPJJiE1SXuIrdaGSt7A501kgNQ8eNX/RsAwqLE=; b=ZdSUYb+qNZ8PzlebeeOiK8O4uXhdoMM42k4FQ0q8xkwudPSOTwGdBGiPnoVj7acFNJXbeugZXNRJSutvsD4kWn0JrtrGrlslAF0zGO5TkvoNQTsG2AmBou6pgzmiBmwHiZKhnQ91G8jJqEoGQ8oZ6SkvbgZzyoO6pvBPwwy31Eto/1B3EHXpmiIo+oe0rJxfnEJxvyspFzVWK+6Om1fZ3KhnmyOWsPhVyBBw9gdVALW2F0MyAC2KUC+ulI6KBTEl93zfhPF0Esd3RekSEu9vK9pn6dHkUGtIpDHeuGZ6c053lIEbRVBsvoYI5dWvIxf3tUuQAABw0dbfAklpbxIaiQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=nvO0TsPJJiE1SXuIrdaGSt7A501kgNQ8eNX/RsAwqLE=; b=sO/o+IulBinuP+kcLGpQOZKF+ujY/Xmy+whOR9ALz9SH//Dr2ZNHdmryd22gW5F6AqhaADFRQ1T1CJ5QBG+1Tv+Y+qQZeq8Q4E6SHjUokuQNS6q8sPNd4u4s8a1D0hh6YOSP32hcU8ZWzvN20E/P+B7uemq/t+ee4UIKmnkh4uY= Received: from DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) by CH0PR10MB7535.namprd10.prod.outlook.com (2603:10b6:610:187::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6156.7; Fri, 24 Feb 2023 17:45:19 +0000 Received: from DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::7dd7:8d22:104:8d64]) by DM5PR10MB1466.namprd10.prod.outlook.com ([fe80::7dd7:8d22:104:8d64%7]) with mapi id 15.20.6156.007; Fri, 24 Feb 2023 17:45:18 +0000 From: Mike Christie To: bvanassche@acm.org, hch@lst.de, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, james.bottomley@hansenpartnership.com, linux-block@vger.kernel.org, dm-devel@redhat.com, snitzer@kernel.org, axboe@kernel.dk, linux-nvme@lists.infradead.org, chaitanyak@nvidia.com, kbusch@kernel.org, target-devel@vger.kernel.org Cc: Mike Christie , Chaitanya Kulkarni Subject: [PATCH v4 09/18] nvme: Move pr code to it's own file Date: Fri, 24 Feb 2023 11:44:53 -0600 Message-Id: <20230224174502.321490-10-michael.christie@oracle.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230224174502.321490-1-michael.christie@oracle.com> References: <20230224174502.321490-1-michael.christie@oracle.com> X-ClientProxiedBy: DS7PR03CA0302.namprd03.prod.outlook.com (2603:10b6:8:2b::11) To DM5PR10MB1466.namprd10.prod.outlook.com (2603:10b6:3:b::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM5PR10MB1466:EE_|CH0PR10MB7535:EE_ X-MS-Office365-Filtering-Correlation-Id: 15dd2854-af93-4977-37b9-08db168ee516 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: yv2TV2I8QLHSFQagwogQL2nUeofxWNLWMVdrQ7JBL3qS9jyRJ5wjVQJMxw7oQXpXMLWOpPD9k5dHdK2sM1gCBU+5Sd0iffVi7ZL5AtIeAax0kBog8fJva0cM8pujI1lndrnP9z4EhmR7xEhYNaYm3UBPgHWEas806H4TJgSE3EOSiYp5pOjIQp6hsMsS2N8gasrZ42JZwYdnGnicZ1juRnpHAeSjbv7epGMDvgZxgR42XJEyoMGDgiLj/FmYxIF+U3gZRDwhUwMYO0WdZOE3koSztRosNeRUb3B947wdJGLM7Yy+Hpjj/9ZWMMMIHSgafDNuVQ2P4Ug2gBz3tFTkMb1YTn2HBbRRZAxNy+I2CQhwsb51Wp6lZ/2NJwnxBKGQ4WttJ6HA3FefEdu1o3kg+lmha3Pms5gVy44fiAzp38Wd4sFhWfnPR+ubGdG3ndDyotvAcgSBNkFo4PKAQXuQ9+w8XS6f0zTRLjqo7Xr90dzHVkNZZgFLb4XwVesa5gH7zDTMJSMlVOA/z4dmH3oT277N03wFVU8sFCHAZ51ADJj6VsqzaSkrsycMeGbs7VUIwxZelMouDbVLRlDbI/zpAJAjsQQTKfXncfG5dpTLGdXrdtcgpTEpExi3gCUf8bcc5ycsNt8JrvCophNw9n+kFXcw/yTVcjFIaCcLxAli3LzxK61ghMmRgpZTgNyxkAu7 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM5PR10MB1466.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230025)(346002)(366004)(376002)(39860400002)(136003)(396003)(451199018)(4326008)(66476007)(66556008)(66946007)(8676002)(83380400001)(41300700001)(316002)(36756003)(186003)(8936002)(54906003)(26005)(5660300002)(2616005)(38100700002)(7416002)(6512007)(921005)(86362001)(478600001)(2906002)(6486002)(6506007)(1076003)(6666004);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 15dd2854-af93-4977-37b9-08db168ee516 X-MS-Exchange-CrossTenant-AuthSource: DM5PR10MB1466.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2023 17:45:18.8912 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: ydEIrVfOGwAkb80P9aj/aHVJGsSDQBhOHAGxuy6pcpMUweTirq6uppYXO9cjwEBSPD+1HetbW3cup2d2QTaP49pMCySH09RfrScoZEm2E2E= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR10MB7535 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-24_12,2023-02-24_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 phishscore=0 malwarescore=0 mlxscore=0 spamscore=0 adultscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302240139 X-Proofpoint-GUID: f8kULuxziioDkS9r2JctixtJqsNbP8cB X-Proofpoint-ORIG-GUID: f8kULuxziioDkS9r2JctixtJqsNbP8cB Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org This patch moves the pr code to it's own file because I'm going to be adding more functions and core.c is getting bigger. Signed-off-by: Mike Christie Reviewed-by: Chaitanya Kulkarni Reviewed-by: Keith Busch --- drivers/nvme/host/Makefile | 2 +- drivers/nvme/host/core.c | 148 ----------------------------------- drivers/nvme/host/nvme.h | 2 + drivers/nvme/host/pr.c | 155 +++++++++++++++++++++++++++++++++++++ 4 files changed, 158 insertions(+), 149 deletions(-) create mode 100644 drivers/nvme/host/pr.c diff --git a/drivers/nvme/host/Makefile b/drivers/nvme/host/Makefile index e27202d22c7d..06c18a65da99 100644 --- a/drivers/nvme/host/Makefile +++ b/drivers/nvme/host/Makefile @@ -10,7 +10,7 @@ obj-$(CONFIG_NVME_FC) += nvme-fc.o obj-$(CONFIG_NVME_TCP) += nvme-tcp.o obj-$(CONFIG_NVME_APPLE) += nvme-apple.o -nvme-core-y += core.o ioctl.o +nvme-core-y += core.o ioctl.o pr.o nvme-core-$(CONFIG_NVME_VERBOSE_ERRORS) += constants.o nvme-core-$(CONFIG_TRACING) += trace.o nvme-core-$(CONFIG_NVME_MULTIPATH) += multipath.o diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 6323ff79386a..69b7fe4aa0c8 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -2051,154 +2051,6 @@ static int nvme_update_ns_info(struct nvme_ns *ns, struct nvme_ns_info *info) } } -static char nvme_pr_type(enum pr_type type) -{ - switch (type) { - case PR_WRITE_EXCLUSIVE: - return 1; - case PR_EXCLUSIVE_ACCESS: - return 2; - case PR_WRITE_EXCLUSIVE_REG_ONLY: - return 3; - case PR_EXCLUSIVE_ACCESS_REG_ONLY: - return 4; - case PR_WRITE_EXCLUSIVE_ALL_REGS: - return 5; - case PR_EXCLUSIVE_ACCESS_ALL_REGS: - return 6; - default: - return 0; - } -} - -static int nvme_send_ns_head_pr_command(struct block_device *bdev, - struct nvme_command *c, u8 *data, unsigned int data_len) -{ - struct nvme_ns_head *head = bdev->bd_disk->private_data; - int srcu_idx = srcu_read_lock(&head->srcu); - struct nvme_ns *ns = nvme_find_path(head); - int ret = -EWOULDBLOCK; - - if (ns) { - c->common.nsid = cpu_to_le32(ns->head->ns_id); - ret = nvme_submit_sync_cmd(ns->queue, c, data, data_len); - } - srcu_read_unlock(&head->srcu, srcu_idx); - return ret; -} - -static int nvme_send_ns_pr_command(struct nvme_ns *ns, struct nvme_command *c, - u8 *data, unsigned int data_len) -{ - c->common.nsid = cpu_to_le32(ns->head->ns_id); - return nvme_submit_sync_cmd(ns->queue, c, data, data_len); -} - -static int nvme_sc_to_pr_err(int nvme_sc) -{ - if (nvme_is_path_error(nvme_sc)) - return PR_STS_PATH_FAILED; - - switch (nvme_sc) { - case NVME_SC_SUCCESS: - return PR_STS_SUCCESS; - case NVME_SC_RESERVATION_CONFLICT: - return PR_STS_RESERVATION_CONFLICT; - case NVME_SC_ONCS_NOT_SUPPORTED: - return -EOPNOTSUPP; - case NVME_SC_BAD_ATTRIBUTES: - case NVME_SC_INVALID_OPCODE: - case NVME_SC_INVALID_FIELD: - case NVME_SC_INVALID_NS: - return -EINVAL; - default: - return PR_STS_IOERR; - } -} - -static int nvme_pr_command(struct block_device *bdev, u32 cdw10, - u64 key, u64 sa_key, u8 op) -{ - struct nvme_command c = { }; - u8 data[16] = { 0, }; - int ret; - - put_unaligned_le64(key, &data[0]); - put_unaligned_le64(sa_key, &data[8]); - - c.common.opcode = op; - c.common.cdw10 = cpu_to_le32(cdw10); - - if (IS_ENABLED(CONFIG_NVME_MULTIPATH) && - bdev->bd_disk->fops == &nvme_ns_head_ops) - ret = nvme_send_ns_head_pr_command(bdev, &c, data, - sizeof(data)); - else - ret = nvme_send_ns_pr_command(bdev->bd_disk->private_data, &c, - data, sizeof(data)); - if (ret < 0) - return ret; - - return nvme_sc_to_pr_err(ret); -} - -static int nvme_pr_register(struct block_device *bdev, u64 old, - u64 new, unsigned flags) -{ - u32 cdw10; - - if (flags & ~PR_FL_IGNORE_KEY) - return -EOPNOTSUPP; - - cdw10 = old ? 2 : 0; - cdw10 |= (flags & PR_FL_IGNORE_KEY) ? 1 << 3 : 0; - cdw10 |= (1 << 30) | (1 << 31); /* PTPL=1 */ - return nvme_pr_command(bdev, cdw10, old, new, nvme_cmd_resv_register); -} - -static int nvme_pr_reserve(struct block_device *bdev, u64 key, - enum pr_type type, unsigned flags) -{ - u32 cdw10; - - if (flags & ~PR_FL_IGNORE_KEY) - return -EOPNOTSUPP; - - cdw10 = nvme_pr_type(type) << 8; - cdw10 |= ((flags & PR_FL_IGNORE_KEY) ? 1 << 3 : 0); - return nvme_pr_command(bdev, cdw10, key, 0, nvme_cmd_resv_acquire); -} - -static int nvme_pr_preempt(struct block_device *bdev, u64 old, u64 new, - enum pr_type type, bool abort) -{ - u32 cdw10 = nvme_pr_type(type) << 8 | (abort ? 2 : 1); - - return nvme_pr_command(bdev, cdw10, old, new, nvme_cmd_resv_acquire); -} - -static int nvme_pr_clear(struct block_device *bdev, u64 key) -{ - u32 cdw10 = 1 | (key ? 0 : 1 << 3); - - return nvme_pr_command(bdev, cdw10, key, 0, nvme_cmd_resv_release); -} - -static int nvme_pr_release(struct block_device *bdev, u64 key, enum pr_type type) -{ - u32 cdw10 = nvme_pr_type(type) << 8 | (key ? 0 : 1 << 3); - - return nvme_pr_command(bdev, cdw10, key, 0, nvme_cmd_resv_release); -} - -const struct pr_ops nvme_pr_ops = { - .pr_register = nvme_pr_register, - .pr_reserve = nvme_pr_reserve, - .pr_release = nvme_pr_release, - .pr_preempt = nvme_pr_preempt, - .pr_clear = nvme_pr_clear, -}; - #ifdef CONFIG_BLK_SED_OPAL static int nvme_sec_submit(void *data, u16 spsp, u8 secp, void *buffer, size_t len, bool send) diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index bf46f122e9e1..c0762346b441 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -19,6 +19,8 @@ #include +extern const struct pr_ops nvme_pr_ops; + extern unsigned int nvme_io_timeout; #define NVME_IO_TIMEOUT (nvme_io_timeout * HZ) diff --git a/drivers/nvme/host/pr.c b/drivers/nvme/host/pr.c new file mode 100644 index 000000000000..26ad25f7280b --- /dev/null +++ b/drivers/nvme/host/pr.c @@ -0,0 +1,155 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include + +#include "nvme.h" + +static char nvme_pr_type(enum pr_type type) +{ + switch (type) { + case PR_WRITE_EXCLUSIVE: + return 1; + case PR_EXCLUSIVE_ACCESS: + return 2; + case PR_WRITE_EXCLUSIVE_REG_ONLY: + return 3; + case PR_EXCLUSIVE_ACCESS_REG_ONLY: + return 4; + case PR_WRITE_EXCLUSIVE_ALL_REGS: + return 5; + case PR_EXCLUSIVE_ACCESS_ALL_REGS: + return 6; + default: + return 0; + } +} + +static int nvme_send_ns_head_pr_command(struct block_device *bdev, + struct nvme_command *c, u8 *data, unsigned int data_len) +{ + struct nvme_ns_head *head = bdev->bd_disk->private_data; + int srcu_idx = srcu_read_lock(&head->srcu); + struct nvme_ns *ns = nvme_find_path(head); + int ret = -EWOULDBLOCK; + + if (ns) { + c->common.nsid = cpu_to_le32(ns->head->ns_id); + ret = nvme_submit_sync_cmd(ns->queue, c, data, data_len); + } + srcu_read_unlock(&head->srcu, srcu_idx); + return ret; +} + +static int nvme_send_ns_pr_command(struct nvme_ns *ns, struct nvme_command *c, + u8 *data, unsigned int data_len) +{ + c->common.nsid = cpu_to_le32(ns->head->ns_id); + return nvme_submit_sync_cmd(ns->queue, c, data, data_len); +} + +static int nvme_sc_to_pr_err(int nvme_sc) +{ + if (nvme_is_path_error(nvme_sc)) + return PR_STS_PATH_FAILED; + + switch (nvme_sc) { + case NVME_SC_SUCCESS: + return PR_STS_SUCCESS; + case NVME_SC_RESERVATION_CONFLICT: + return PR_STS_RESERVATION_CONFLICT; + case NVME_SC_ONCS_NOT_SUPPORTED: + return -EOPNOTSUPP; + case NVME_SC_BAD_ATTRIBUTES: + case NVME_SC_INVALID_OPCODE: + case NVME_SC_INVALID_FIELD: + case NVME_SC_INVALID_NS: + return -EINVAL; + default: + return PR_STS_IOERR; + } +} + +static int nvme_pr_command(struct block_device *bdev, u32 cdw10, + u64 key, u64 sa_key, u8 op) +{ + struct nvme_command c = { }; + u8 data[16] = { 0, }; + int ret; + + put_unaligned_le64(key, &data[0]); + put_unaligned_le64(sa_key, &data[8]); + + c.common.opcode = op; + c.common.cdw10 = cpu_to_le32(cdw10); + + if (IS_ENABLED(CONFIG_NVME_MULTIPATH) && + bdev->bd_disk->fops == &nvme_ns_head_ops) + ret = nvme_send_ns_head_pr_command(bdev, &c, data, + sizeof(data)); + else + ret = nvme_send_ns_pr_command(bdev->bd_disk->private_data, &c, + data, sizeof(data)); + if (ret < 0) + return ret; + + return nvme_sc_to_pr_err(ret); +} + +static int nvme_pr_register(struct block_device *bdev, u64 old, + u64 new, unsigned flags) +{ + u32 cdw10; + + if (flags & ~PR_FL_IGNORE_KEY) + return -EOPNOTSUPP; + + cdw10 = old ? 2 : 0; + cdw10 |= (flags & PR_FL_IGNORE_KEY) ? 1 << 3 : 0; + cdw10 |= (1 << 30) | (1 << 31); /* PTPL=1 */ + return nvme_pr_command(bdev, cdw10, old, new, nvme_cmd_resv_register); +} + +static int nvme_pr_reserve(struct block_device *bdev, u64 key, + enum pr_type type, unsigned flags) +{ + u32 cdw10; + + if (flags & ~PR_FL_IGNORE_KEY) + return -EOPNOTSUPP; + + cdw10 = nvme_pr_type(type) << 8; + cdw10 |= ((flags & PR_FL_IGNORE_KEY) ? 1 << 3 : 0); + return nvme_pr_command(bdev, cdw10, key, 0, nvme_cmd_resv_acquire); +} + +static int nvme_pr_preempt(struct block_device *bdev, u64 old, u64 new, + enum pr_type type, bool abort) +{ + u32 cdw10 = nvme_pr_type(type) << 8 | (abort ? 2 : 1); + + return nvme_pr_command(bdev, cdw10, old, new, nvme_cmd_resv_acquire); +} + +static int nvme_pr_clear(struct block_device *bdev, u64 key) +{ + u32 cdw10 = 1 | (key ? 0 : 1 << 3); + + return nvme_pr_command(bdev, cdw10, key, 0, nvme_cmd_resv_release); +} + +static int nvme_pr_release(struct block_device *bdev, u64 key, enum pr_type type) +{ + u32 cdw10 = nvme_pr_type(type) << 8 | (key ? 0 : 1 << 3); + + return nvme_pr_command(bdev, cdw10, key, 0, nvme_cmd_resv_release); +} + +const struct pr_ops nvme_pr_ops = { + .pr_register = nvme_pr_register, + .pr_reserve = nvme_pr_reserve, + .pr_release = nvme_pr_release, + .pr_preempt = nvme_pr_preempt, + .pr_clear = nvme_pr_clear, +};