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Fri, 7 Apr 2023 20:06:27 GMT Received: from pps.reinject (localhost [127.0.0.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTPS id 3pptjxef3k-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 07 Apr 2023 20:06:27 +0000 Received: from iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 337K5trG010228; Fri, 7 Apr 2023 20:06:27 GMT Received: from mnchrist-mac.us.oracle.com (dhcp-10-154-128-1.vpn.oracle.com [10.154.128.1]) by iadpaimrmta02.imrmtpd1.prodappiadaev1.oraclevcn.com (PPS) with ESMTP id 3pptjxeeam-13; Fri, 07 Apr 2023 20:06:27 +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 Date: Fri, 7 Apr 2023 15:05:45 -0500 Message-Id: <20230407200551.12660-13-michael.christie@oracle.com> In-Reply-To: <20230407200551.12660-1-michael.christie@oracle.com> References: <20230407200551.12660-1-michael.christie@oracle.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-07_12,2023-04-06_03,2023-02-09_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 adultscore=0 phishscore=0 bulkscore=0 mlxscore=0 suspectscore=0 spamscore=0 mlxlogscore=774 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304070180 X-Proofpoint-ORIG-GUID: nFaU9bZWIh3QTwQeAZsvDLSz0079EoxM X-Proofpoint-GUID: nFaU9bZWIh3QTwQeAZsvDLSz0079EoxM X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 X-Mailman-Approved-At: Tue, 11 Apr 2023 06:44:09 +0000 Subject: [dm-devel] [PATCH v6 12/18] nvme: Add a nvme_pr_type enum X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Chaitanya Kulkarni , Mike Christie Errors-To: dm-devel-bounces@redhat.com Sender: "dm-devel" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: oracle.com The next patch adds support to report the reservation type, so we need to be able to convert from the NVMe PR value we get from the device to the linux block layer PR value that will be returned to callers. To prepare for that, this patch adds a nvme_pr_type enum and renames the nvme_pr_type function. Signed-off-by: Mike Christie Reviewed-by: Chaitanya Kulkarni Reviewed-by: Christoph Hellwig Reviewed-by: Hannes Reinecke --- drivers/nvme/host/pr.c | 24 ++++++++++++------------ include/linux/nvme.h | 9 +++++++++ 2 files changed, 21 insertions(+), 12 deletions(-) diff --git a/drivers/nvme/host/pr.c b/drivers/nvme/host/pr.c index 0ee656404437..732c56b417c2 100644 --- a/drivers/nvme/host/pr.c +++ b/drivers/nvme/host/pr.c @@ -9,24 +9,24 @@ #include "nvme.h" -static char nvme_pr_type(enum pr_type type) +static enum nvme_pr_type nvme_pr_type_from_blk(enum pr_type type) { switch (type) { case PR_WRITE_EXCLUSIVE: - return 1; + return NVME_PR_WRITE_EXCLUSIVE; case PR_EXCLUSIVE_ACCESS: - return 2; + return NVME_PR_EXCLUSIVE_ACCESS; case PR_WRITE_EXCLUSIVE_REG_ONLY: - return 3; + return NVME_PR_WRITE_EXCLUSIVE_REG_ONLY; case PR_EXCLUSIVE_ACCESS_REG_ONLY: - return 4; + return NVME_PR_EXCLUSIVE_ACCESS_REG_ONLY; case PR_WRITE_EXCLUSIVE_ALL_REGS: - return 5; + return NVME_PR_WRITE_EXCLUSIVE_ALL_REGS; case PR_EXCLUSIVE_ACCESS_ALL_REGS: - return 6; - default: - return 0; + return NVME_PR_EXCLUSIVE_ACCESS_ALL_REGS; } + + return 0; } static int nvme_send_ns_head_pr_command(struct block_device *bdev, @@ -127,7 +127,7 @@ static int nvme_pr_reserve(struct block_device *bdev, u64 key, if (flags & ~PR_FL_IGNORE_KEY) return -EOPNOTSUPP; - cdw10 = nvme_pr_type(type) << 8; + cdw10 = nvme_pr_type_from_blk(type) << 8; cdw10 |= ((flags & PR_FL_IGNORE_KEY) ? 1 << 3 : 0); return nvme_pr_command(bdev, cdw10, key, 0, nvme_cmd_resv_acquire); } @@ -135,7 +135,7 @@ static int nvme_pr_reserve(struct block_device *bdev, u64 key, 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); + u32 cdw10 = nvme_pr_type_from_blk(type) << 8 | (abort ? 2 : 1); return nvme_pr_command(bdev, cdw10, old, new, nvme_cmd_resv_acquire); } @@ -149,7 +149,7 @@ static int nvme_pr_clear(struct block_device *bdev, u64 key) 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); + u32 cdw10 = nvme_pr_type_from_blk(type) << 8 | (key ? 0 : 1 << 3); return nvme_pr_command(bdev, cdw10, key, 0, nvme_cmd_resv_release); } diff --git a/include/linux/nvme.h b/include/linux/nvme.h index c18bd55a4ead..182b6d614eb1 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -759,6 +759,15 @@ enum { NVME_LBART_ATTRIB_HIDE = 1 << 1, }; +enum nvme_pr_type { + NVME_PR_WRITE_EXCLUSIVE = 1, + NVME_PR_EXCLUSIVE_ACCESS = 2, + NVME_PR_WRITE_EXCLUSIVE_REG_ONLY = 3, + NVME_PR_EXCLUSIVE_ACCESS_REG_ONLY = 4, + NVME_PR_WRITE_EXCLUSIVE_ALL_REGS = 5, + NVME_PR_EXCLUSIVE_ACCESS_ALL_REGS = 6, +}; + enum nvme_eds { NVME_EXTENDED_DATA_STRUCT = 0x1, };