[PATCH v4 10/18] nvme: factor out device state setup

[Klaus Jensen]

From: Klaus Jensen <address@hidden>

Signed-off-by: Klaus Jensen <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Reviewed-by: Maxim Levitsky <address@hidden>
Reviewed-by: Keith Busch <address@hidden>
---
 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 13fb90c77e90..72e838a476af 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -1397,6 +1397,17 @@ 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);
@@ -1413,6 +1424,8 @@ 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");
@@ -1431,17 +1444,8 @@ 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,
-- 
2.26.2