[PATCH v6 2/8] net/rnp: add ethdev probe and remove

[Wenbo Cao <caowenbo@mucse.com>]

Add basic PCIe ethdev probe and remove.

Signed-off-by: Wenbo Cao <caowenbo@mucse.com>
---
 drivers/net/rnp/rnp.h        | 13 ++++++
 drivers/net/rnp/rnp_ethdev.c | 83 ++++++++++++++++++++++++++++++++++++
 2 files changed, 96 insertions(+)
 create mode 100644 drivers/net/rnp/rnp.h

diff --git a/drivers/net/rnp/rnp.h b/drivers/net/rnp/rnp.h
new file mode 100644
index 0000000000..76d281cc0a
--- /dev/null
+++ b/drivers/net/rnp/rnp.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2023 Mucse IC Design Ltd.
+ */
+#ifndef __RNP_H__
+#define __RNP_H__
+
+#define PCI_VENDOR_ID_MUCSE	(0x8848)
+#define RNP_DEV_ID_N10G		(0x1000)
+
+struct rnp_eth_port {
+} __rte_cache_aligned;
+
+#endif /* __RNP_H__ */
diff --git a/drivers/net/rnp/rnp_ethdev.c b/drivers/net/rnp/rnp_ethdev.c
index 9ce3c0b497..390f2e7743 100644
--- a/drivers/net/rnp/rnp_ethdev.c
+++ b/drivers/net/rnp/rnp_ethdev.c
@@ -1,3 +1,86 @@
 /* SPDX-License-Identifier: BSD-3-Clause
  * Copyright(C) 2023 Mucse IC Design Ltd.
  */
+
+#include <ethdev_pci.h>
+#include <rte_io.h>
+#include <rte_malloc.h>
+
+#include "rnp.h"
+
+static int
+rnp_eth_dev_init(struct rte_eth_dev *eth_dev)
+{
+	RTE_SET_USED(eth_dev);
+
+	return -ENODEV;
+}
+
+static int
+rnp_eth_dev_uninit(struct rte_eth_dev *eth_dev)
+{
+	RTE_SET_USED(eth_dev);
+
+	return -ENODEV;
+}
+
+static int
+rnp_pci_remove(struct rte_pci_device *pci_dev)
+{
+	struct rte_eth_dev *eth_dev;
+	int rc;
+
+	eth_dev = rte_eth_dev_allocated(pci_dev->device.name);
+
+	if (eth_dev) {
+		/* Cleanup eth dev */
+		rc = rte_eth_dev_pci_generic_remove(pci_dev,
+				rnp_eth_dev_uninit);
+		if (rc)
+			return rc;
+	}
+	/* Nothing to be done for secondary processes */
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	return 0;
+}
+
+static int
+rnp_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
+{
+	int rc;
+
+	RTE_SET_USED(pci_drv);
+
+	rc = rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct rnp_eth_port),
+					   rnp_eth_dev_init);
+
+	/* On error on secondary, recheck if port exists in primary or
+	 * in mid of detach state.
+	 */
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY && rc)
+		if (!rte_eth_dev_allocated(pci_dev->device.name))
+			return 0;
+	return rc;
+}
+
+static const struct rte_pci_id pci_id_rnp_map[] = {
+	{
+		RTE_PCI_DEVICE(PCI_VENDOR_ID_MUCSE, RNP_DEV_ID_N10G)
+	},
+	{
+		.vendor_id = 0,
+	},
+};
+
+static struct rte_pci_driver rte_rnp_pmd = {
+	.id_table = pci_id_rnp_map,
+	.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
+	.probe = rnp_pci_probe,
+	.remove = rnp_pci_remove,
+};
+
+RTE_PMD_REGISTER_PCI(net_rnp, rte_rnp_pmd);
+RTE_PMD_REGISTER_PCI_TABLE(net_rnp, pci_id_rnp_map);
+RTE_PMD_REGISTER_KMOD_DEP(net_rnp, "igb_uio | uio_pci_generic | vfio-pci");
-- 
2.27.0