[PATCH v5 03/23] net/ntnic: add minimal initialization for PCI device

[Serhii Iliushyk]

add implementation for probe/init and remove/deinit of the PCI device

Signed-off-by: Serhii Iliushyk <sil-plv at napatech.com>
---
 drivers/net/ntnic/ntnic_ethdev.c | 104 ++++++++++++++++++++++++++++++-
 1 file changed, 103 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ntnic/ntnic_ethdev.c b/drivers/net/ntnic/ntnic_ethdev.c
index 3079bd98e4..e9a584877f 100644
--- a/drivers/net/ntnic/ntnic_ethdev.c
+++ b/drivers/net/ntnic/ntnic_ethdev.c
@@ -17,14 +17,63 @@
 /* Global static variables: */
 
 static int
-nthw_pci_dev_init(struct rte_pci_device *pci_dev __rte_unused)
+nthw_pci_dev_init(struct rte_pci_device *pci_dev)
 {
+	uint32_t n_port_mask = -1;	/* All ports enabled by default */
+	int n_phy_ports;
+	NT_LOG_DBGX(DEBUG, NTNIC, "Dev %s PF #%i Init : %02x:%02x:%i\n", pci_dev->name,
+		pci_dev->addr.function, pci_dev->addr.bus, pci_dev->addr.devid,
+		pci_dev->addr.function);
+
+	n_phy_ports = 0;
+
+	for (int n_intf_no = 0; n_intf_no < n_phy_ports; n_intf_no++) {
+		struct rte_eth_dev *eth_dev = NULL;
+		char name[32];
+
+		if ((1 << n_intf_no) & ~n_port_mask)
+			continue;
+
+		snprintf(name, sizeof(name), "ntnic%d", n_intf_no);
+
+		eth_dev = rte_eth_dev_allocate(name);	/* TODO: name */
+
+		if (!eth_dev) {
+			NT_LOG_DBGX(ERR, NTNIC, "%s: %s: error=%d\n",
+				(pci_dev->name[0] ? pci_dev->name : "NA"), name, -1);
+			return -1;
+		}
+
+		NT_LOG_DBGX(DEBUG, NTNIC, "eth_dev %p, port_id %u, if_index %u\n",
+					eth_dev, eth_dev->data->port_id, n_intf_no);
+
+
+		struct rte_eth_link pmd_link;
+		pmd_link.link_speed = RTE_ETH_SPEED_NUM_NONE;
+		pmd_link.link_duplex = RTE_ETH_LINK_FULL_DUPLEX;
+		pmd_link.link_status = RTE_ETH_LINK_DOWN;
+		pmd_link.link_autoneg = RTE_ETH_LINK_AUTONEG;
+
+		eth_dev->device = &pci_dev->device;
+		eth_dev->data->dev_link = pmd_link;
+		eth_dev->data->numa_node = pci_dev->device.numa_node;
+		eth_dev->dev_ops = NULL;
+		eth_dev->state = RTE_ETH_DEV_ATTACHED;
+
+		rte_eth_copy_pci_info(eth_dev, pci_dev);
+		/* performs rte_eth_copy_pci_info() */
+		eth_dev_pci_specific_init(eth_dev, pci_dev);
+
+		/* increase initialized ethernet devices - PF */
+	}
+
 	return 0;
 }
 
 static int
 nthw_pci_dev_deinit(struct rte_eth_dev *eth_dev __rte_unused)
 {
+	NT_LOG_DBGX(DEBUG, NTNIC, "PCI device deinitialization\n");
 	return 0;
 }
 
@@ -33,13 +82,65 @@ nthw_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
 	struct rte_pci_device *pci_dev)
 {
 	int res;
+
+	NT_LOG_DBGX(DEBUG, NTNIC, "pcidev: name: '%s'\n", pci_dev->name);
+	NT_LOG_DBGX(DEBUG, NTNIC, "devargs: name: '%s'\n", pci_dev->device.name);
+
+	if (pci_dev->device.devargs) {
+		NT_LOG_DBGX(DEBUG, NTNIC, "devargs: args: '%s'\n",
+			(pci_dev->device.devargs->args ? pci_dev->device.devargs->args : "NULL"));
+		NT_LOG_DBGX(DEBUG, NTNIC, "devargs: data: '%s'\n",
+			(pci_dev->device.devargs->data ? pci_dev->device.devargs->data : "NULL"));
+	}
+
+	const int n_rte_has_pci = rte_eal_has_pci();
+	NT_LOG(DBG, NTNIC, "has_pci=%d\n", n_rte_has_pci);
+
+	if (n_rte_has_pci == 0) {
+		NT_LOG(ERR, NTNIC, "has_pci=%d: this PMD needs hugepages\n", n_rte_has_pci);
+		return -1;
+	}
+
+	const int n_rte_vfio_no_io_mmu_enabled = rte_vfio_noiommu_is_enabled();
+	NT_LOG(DBG, NTNIC, "vfio_no_iommu_enabled=%d\n", n_rte_vfio_no_io_mmu_enabled);
+
+	if (n_rte_vfio_no_io_mmu_enabled) {
+		NT_LOG(ERR, NTNIC, "vfio_no_iommu_enabled=%d: this PMD needs VFIO IOMMU\n",
+			n_rte_vfio_no_io_mmu_enabled);
+		return -1;
+	}
+
+	const enum rte_iova_mode n_rte_io_va_mode = rte_eal_iova_mode();
+	NT_LOG(DBG, NTNIC, "iova mode=%d\n", n_rte_io_va_mode);
+
+	if (n_rte_io_va_mode != RTE_IOVA_PA) {
+		NT_LOG(WRN, NTNIC, "iova mode (%d) should be PA for performance reasons\n",
+			n_rte_io_va_mode);
+	}
+
+	NT_LOG(DBG, NTNIC,
+		"busid=" PCI_PRI_FMT
+		" pciid=%04x:%04x_%04x:%04x locstr=%s @ numanode=%d: drv=%s drvalias=%s\n",
+		pci_dev->addr.domain, pci_dev->addr.bus, pci_dev->addr.devid,
+		pci_dev->addr.function, pci_dev->id.vendor_id, pci_dev->id.device_id,
+		pci_dev->id.subsystem_vendor_id, pci_dev->id.subsystem_device_id,
+		pci_dev->name[0] ? pci_dev->name : "NA",	/* locstr */
+		pci_dev->device.numa_node,
+		pci_dev->driver->driver.name ? pci_dev->driver->driver.name : "NA",
+		pci_dev->driver->driver.alias ? pci_dev->driver->driver.alias : "NA");
+
+
 	res = nthw_pci_dev_init(pci_dev);
+
+	NT_LOG_DBGX(DEBUG, NTNIC, "leave: res=%d\n", res);
 	return res;
 }
 
 static int
 nthw_pci_remove(struct rte_pci_device *pci_dev)
 {
+	NT_LOG_DBGX(DEBUG, NTNIC);
+
 	return rte_eth_dev_pci_generic_remove(pci_dev, nthw_pci_dev_deinit);
 }
 
@@ -48,6 +149,7 @@ static struct rte_pci_driver rte_nthw_pmd = {
 		.name = "net_ntnic",
 	},
 
+	.drv_flags = RTE_PCI_DRV_NEED_MAPPING,
 	.probe = nthw_pci_probe,
 	.remove = nthw_pci_remove,
 };
-- 
2.45.0