Re: [PATCH v2 10/16] nvme: factor out device state setup

[Maxim Levitsky <mlevitsk@redhat.com>]

On Wed, 2020-04-15 at 15:01 +0200, Klaus Jensen wrote:
> From: Klaus Jensen <k.jensen@samsung.com>
> 
> Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
>  hw/block/nvme.c | 22 +++++++++++++---------
>  1 file changed, 13 insertions(+), 9 deletions(-)
> 
> diff --git a/hw/block/nvme.c b/hw/block/nvme.c
> index 5f9ebbd6a1d5..45a352b63d89 100644
> --- a/hw/block/nvme.c
> +++ b/hw/block/nvme.c
> @@ -1340,6 +1340,17 @@ 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);
> @@ -1356,6 +1367,8 @@ 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");
> @@ -1374,17 +1387,8 @@ 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,

Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>

Best regards,
	Maxim Levitsky