Commit 7c895269 authored by Weiping Zhang's avatar Weiping Zhang Committed by Kevin Wolf
Browse files

hw/block/nvme: add optional parameter num_queues for nvme device 



Add an optional paramter num_queues for device, and set it
to 64 by default.

Signed-off-by: default avatarWeiping Zhang <zhangweiping@didichuxing.com>
Acked-by: default avatarKeith Busch <keith.busch@intel.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent b8efb36b

hw/block/nvme.c

+3 −2
Original line number Diff line number Diff line
@@ -18,7 +18,8 @@ 
 * Usage: add options:

 *      -drive file=<file>,if=none,id=<drive_id>

 *      -device nvme,drive=<drive_id>,serial=<serial>,id=<id[optional]>, \

 *              cmb_size_mb=<cmb_size_mb[optional]>

 *              cmb_size_mb=<cmb_size_mb[optional]>, \

 *              num_queues=<N[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.
@@ -1232,7 +1233,6 @@ static void nvme_realize(PCIDevice *pci_dev, Error **errp) 
    pcie_endpoint_cap_init(&n->parent_obj, 0x80);



    n->num_namespaces = 1;

    n->num_queues = 64;

    n->reg_size = pow2ceil(0x1004 + 2 * (n->num_queues + 1) * 4);

    n->ns_size = bs_size / (uint64_t)n->num_namespaces;
@@ -1341,6 +1341,7 @@ static Property nvme_props[] = { 
    DEFINE_BLOCK_PROPERTIES(NvmeCtrl, conf),

    DEFINE_PROP_STRING("serial", NvmeCtrl, serial),

    DEFINE_PROP_UINT32("cmb_size_mb", NvmeCtrl, cmb_size_mb, 0),

    DEFINE_PROP_UINT32("num_queues", NvmeCtrl, num_queues, 64),

    DEFINE_PROP_END_OF_LIST(),

};