diff options
Diffstat (limited to 'hw/block/nvme.c')
| -rw-r--r-- | hw/block/nvme.c | 43 |
1 files changed, 38 insertions, 5 deletions
diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 4bcc766073..f4f1487afe 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=<mem_backend_file_id>,] \ * max_ioqpairs=<N[optional]>, \ * aerl=<N[optional]>, aer_max_queued=<N[optional]>, \ - * mdts=<N[optional]> - * -device nvme-ns,drive=<drive_id>,bus=bus_name,nsid=<nsid> + * mdts=<N[optional]>,zoned.append_size_limit=<N[optional]> \ + * -device nvme-ns,drive=<drive_id>,bus=<bus_name>,nsid=<nsid>,\ + * zoned=<true|false[optional]> * * 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 +42,46 @@ * ~~~~~~~~~~~~~~~~~~~~~~ * - `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(<maximum append size> / <page size>), 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.zone_size=<zone size in bytes, default: 128MiB> + * The number may be followed by K, M, G as in kilo-, mega- or giga-. + * + * zoned.zone_capacity=<zone capacity in bytes, default: zone size> + * 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=<zone descriptor extension size, default 0> + * This value needs to be specified in 64B units. If it is zero, + * namespace(s) will not support zone descriptor extensions. + * + * zoned.max_active=<Maximum Active Resources (zones), default: 0> + * The default value means there is no limit to the number of + * concurrently active zones. + * + * zoned.max_open=<Maximum Open Resources (zones), default: 0> + * The default value means there is no limit to the number of + * concurrently open zones. + * + * zoned.cross_zone_read=<enable RAZB, default: false> + * Setting this property to true enables Read Across Zone Boundaries. */ #include "qemu/osdep.h" |