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hw/block/nvme: factor out device state setup 

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Message-Id: <20200609190333.59390-12-its@irrelevant.dk>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Klaus Jensen 2020-06-09 21:03:22 +02:00 committed by Kevin Wolf
parent 54000c66f0
commit a17f50188b
1 changed files with 13 additions and 9 deletions
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22
hw/block/nvme.c
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@ -1399,6 +1399,17 @@ static void nvme_check_constraints(NvmeCtrl *n, Error **errp)
}
}
static void nvme_init_state(NvmeCtrl *n)
{
n->num_namespaces = 1;
/* add one to max_ioqpairs to account for the admin queue pair */
n->reg_size = pow2ceil(NVME_REG_SIZE +
2 * (n->params.max_ioqpairs + 1) * NVME_DB_SIZE);
n->namespaces = g_new0(NvmeNamespace, n->num_namespaces);
n->sq = g_new0(NvmeSQueue *, n->params.max_ioqpairs + 1);
n->cq = g_new0(NvmeCQueue *, n->params.max_ioqpairs + 1);
}
static void nvme_realize(PCIDevice *pci_dev, Error **errp)
{
NvmeCtrl *n = NVME(pci_dev);
@ -1415,6 +1426,8 @@ static void nvme_realize(PCIDevice *pci_dev, Error **errp)
return;
}
nvme_init_state(n);
bs_size = blk_getlength(n->conf.blk);
if (bs_size < 0) {
error_setg(errp, "could not get backing file size");
@ -1433,17 +1446,8 @@ static void nvme_realize(PCIDevice *pci_dev, Error **errp)
pci_config_set_class(pci_dev->config, PCI_CLASS_STORAGE_EXPRESS);
pcie_endpoint_cap_init(pci_dev, 0x80);
n->num_namespaces = 1;
/* add one to max_ioqpairs to account for the admin queue pair */
n->reg_size = pow2ceil(NVME_REG_SIZE +
2 * (n->params.max_ioqpairs + 1) * NVME_DB_SIZE);
n->ns_size = bs_size / (uint64_t)n->num_namespaces;
n->namespaces = g_new0(NvmeNamespace, n->num_namespaces);
n->sq = g_new0(NvmeSQueue *, n->params.max_ioqpairs + 1);
n->cq = g_new0(NvmeCQueue *, n->params.max_ioqpairs + 1);
memory_region_init_io(&n->iomem, OBJECT(n), &nvme_mmio_ops, n,
"nvme", n->reg_size);
pci_register_bar(pci_dev, 0,