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04 Nov 2020 18:40:21 -0800 IronPort-SDR: 6bCICRKc6Un5ONgt9aa8mXqOziTPoc3I7y6EB1U9VRQ7qLtvA663hFB7C9onizAQAwM3WUkErg 7y2D9ZVFKRkdb11qJ7dAy7R2iki4MaL7YAAO2N/uYlJU4ZJCuv39fD8qVaBDiSaazmQlp4S2w8 B3kjB7WC9iJ8QFCUiQKgIEXzLLoGJ7QgTfkehSaIADkFIjxDx+3+k8x5Kw500anAZW7qpojf5Y 5PhpbS27cXTPEyYBLHgcOuz28bpUVbyyO88Z5gLWc1qi5qkvqfaMhDAQsdrO3cQJqMC4Sq6xwL Fg8= WDCIronportException: Internal Received: from unknown (HELO redsun50.ssa.fujisawa.hgst.com) ([10.149.66.24]) by uls-op-cesaip02.wdc.com with ESMTP; 04 Nov 2020 18:54:12 -0800 From: Dmitry Fomichev To: Keith Busch , Klaus Jensen , Kevin Wolf , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Max Reitz , Maxim Levitsky , Fam Zheng Subject: [PATCH v9 12/12] hw/block/nvme: Document zoned parameters in usage text Date: Thu, 5 Nov 2020 11:53:42 +0900 Message-Id: <20201105025342.9037-13-dmitry.fomichev@wdc.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20201105025342.9037-1-dmitry.fomichev@wdc.com> References: <20201105025342.9037-1-dmitry.fomichev@wdc.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.71.153.141; envelope-from=prvs=571894d84=dmitry.fomichev@wdc.com; helo=esa3.hgst.iphmx.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/04 21:53:45 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Niklas Cassel , Damien Le Moal , qemu-block@nongnu.org, Dmitry Fomichev , qemu-devel@nongnu.org, Alistair Francis , Matias Bjorling Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Added brief descriptions of the new device properties that are now available to users to configure features of Zoned Namespace Command Set in the emulator. This patch is for documentation only, no functionality change. Signed-off-by: Dmitry Fomichev Reviewed-by: Niklas Cassel --- hw/block/nvme.c | 47 ++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 42 insertions(+), 5 deletions(-) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 0db51995cc..8901321317 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -9,7 +9,7 @@ */ /** - * Reference Specs: http://www.nvmexpress.org, 1.2, 1.1, 1.0e + * Reference Specs: http://www.nvmexpress.org, 1.4, 1.3, 1.2, 1.1, 1.0e * * https://nvmexpress.org/developers/nvme-specification/ */ @@ -22,8 +22,9 @@ * [pmrdev=,] \ * max_ioqpairs=, \ * aerl=, aer_max_queued=, \ - * mdts= - * -device nvme-ns,drive=,bus=bus_name,nsid= + * mdts=,zoned.append_size_limit= \ + * -device nvme-ns,drive=,bus=,nsid=,\ + * zoned= * * Note cmb_size_mb denotes size of CMB in MB. CMB is assumed to be at * offset 0 in BAR2 and supports only WDS, RDS and SQS for now. @@ -41,14 +42,50 @@ * ~~~~~~~~~~~~~~~~~~~~~~ * - `aerl` * The Asynchronous Event Request Limit (AERL). Indicates the maximum number - * of concurrently outstanding Asynchronous Event Request commands suppoert + * of concurrently outstanding Asynchronous Event Request commands support * by the controller. This is a 0's based value. * * - `aer_max_queued` * This is the maximum number of events that the device will enqueue for - * completion when there are no oustanding AERs. When the maximum number of + * completion when there are no outstanding AERs. When the maximum number of * enqueued events are reached, subsequent events will be dropped. * + * - `zoned.append_size_limit` + * The maximum I/O size in bytes that is allowed in Zone Append command. + * The default is 128KiB. Since internally this this value is maintained as + * ZASL = log2( / ), some values assigned + * to this property may be rounded down and result in a lower maximum ZA + * data size being in effect. By setting this property to 0, users can make + * ZASL to be equal to MDTS. This property only affects zoned namespaces. + * + * Setting `zoned` to true selects Zoned Command Set at the namespace. + * In this case, the following namespace properties are available to configure + * zoned operation: + * zoned.zsze= + * The number may be followed by K, M, G as in kilo-, mega- or giga-. + * + * zoned.zcap= + * The value 0 (default) forces zone capacity to be the same as zone + * size. The value of this property may not exceed zone size. + * + * zoned.descr_ext_size= + * This value needs to be specified in 64B units. If it is zero, + * namespace(s) will not support zone descriptor extensions. + * + * zoned.max_active= + * The default value means there is no limit to the number of + * concurrently active zones. + * + * zoned.max_open= + * The default value means there is no limit to the number of + * concurrently open zones. + * + * zoned.offline_zones= + * + * zoned.rdonly_zones= + * + * zoned.cross_zone_read= + * Setting this property to true enables Read Across Zone Boundaries. */ #include "qemu/osdep.h" -- 2.21.0