[PATCH v2 01/18] net/r8169: add PMD driver skeleton

[Howard Wang <howard_wang@realsil.com.cn>]

Meson build infrastructure, r8169_ethdev minimal skeleton,
header with Realtek NIC device and vendor IDs.

Signed-off-by: Howard Wang <howard_wang@realsil.com.cn>
---
 MAINTAINERS                      |   7 ++
 drivers/net/meson.build          |   1 +
 drivers/net/r8169/meson.build    |   7 ++
 drivers/net/r8169/r8169_base.h   |  16 +++
 drivers/net/r8169/r8169_ethdev.c | 179 +++++++++++++++++++++++++++++++
 drivers/net/r8169/r8169_ethdev.h |  41 +++++++
 6 files changed, 251 insertions(+)
 create mode 100644 drivers/net/r8169/meson.build
 create mode 100644 drivers/net/r8169/r8169_base.h
 create mode 100644 drivers/net/r8169/r8169_ethdev.c
 create mode 100644 drivers/net/r8169/r8169_ethdev.h

diff --git a/MAINTAINERS b/MAINTAINERS
index c5a703b5c0..5f9eccc43f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1076,6 +1076,13 @@ F: drivers/net/memif/
 F: doc/guides/nics/memif.rst
 F: doc/guides/nics/features/memif.ini
 
+Realtek r8169
+M: Howard Wang <howard_wang@realsil.com.cn>
+M: ChunHao Lin <hau@realtek.com>
+M: Xing Wang <xing_wang@realsil.com.cn>
+M: Realtek NIC SW <pro_nic_dpdk@realtek.com>
+F: drivers/net/r8169
+
 
 Crypto Drivers
 --------------
diff --git a/drivers/net/meson.build b/drivers/net/meson.build
index fb6d34b782..fddcf39655 100644
--- a/drivers/net/meson.build
+++ b/drivers/net/meson.build
@@ -53,6 +53,7 @@ drivers = [
         'pfe',
         'qede',
         'ring',
+        'r8169',
         'sfc',
         'softnic',
         'tap',
diff --git a/drivers/net/r8169/meson.build b/drivers/net/r8169/meson.build
new file mode 100644
index 0000000000..e37b4fb237
--- /dev/null
+++ b/drivers/net/r8169/meson.build
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2024 Realtek Corporation. All rights reserved
+
+sources = files(
+		'r8169_ethdev.c',
+)
+
diff --git a/drivers/net/r8169/r8169_base.h b/drivers/net/r8169/r8169_base.h
new file mode 100644
index 0000000000..c3b0186daa
--- /dev/null
+++ b/drivers/net/r8169/r8169_base.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 Realtek Corporation. All rights reserved
+ */
+
+#ifndef _R8169_BASE_H_
+#define _R8169_BASE_H_
+
+typedef uint8_t   u8;
+typedef uint16_t  u16;
+typedef uint32_t  u32;
+typedef uint64_t  u64;
+
+#define PCI_VENDOR_ID_REALTEK 0x10EC
+
+#endif
+
diff --git a/drivers/net/r8169/r8169_ethdev.c b/drivers/net/r8169/r8169_ethdev.c
new file mode 100644
index 0000000000..e5f8857304
--- /dev/null
+++ b/drivers/net/r8169/r8169_ethdev.c
@@ -0,0 +1,179 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 Realtek Corporation. All rights reserved
+ */
+
+#include <sys/queue.h>
+#include <stdio.h>
+#include <errno.h>
+#include <stdint.h>
+#include <stdarg.h>
+
+#include <rte_eal.h>
+
+#include <rte_string_fns.h>
+#include <rte_common.h>
+#include <rte_interrupts.h>
+#include <rte_byteorder.h>
+#include <rte_log.h>
+#include <rte_debug.h>
+#include <rte_pci.h>
+#include <bus_pci_driver.h>
+#include <rte_ether.h>
+#include <ethdev_driver.h>
+#include <ethdev_pci.h>
+#include <rte_memory.h>
+#include <rte_malloc.h>
+#include <dev_driver.h>
+
+#include "r8169_ethdev.h"
+#include "r8169_base.h"
+
+static int rtl_dev_configure(struct rte_eth_dev *dev __rte_unused);
+static int rtl_dev_start(struct rte_eth_dev *dev);
+static int rtl_dev_stop(struct rte_eth_dev *dev);
+static int rtl_dev_reset(struct rte_eth_dev *dev);
+static int rtl_dev_close(struct rte_eth_dev *dev);
+
+/*
+ * The set of PCI devices this driver supports
+ */
+static const struct rte_pci_id pci_id_r8169_map[] = {
+	{ RTE_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8125) },
+	{ RTE_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8162) },
+	{ RTE_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8126) },
+	{ RTE_PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x5000) },
+	{.vendor_id = 0, /* sentinel */ },
+};
+
+static const struct eth_dev_ops rtl_eth_dev_ops = {
+	.dev_configure	      = rtl_dev_configure,
+	.dev_start	      = rtl_dev_start,
+	.dev_stop	      = rtl_dev_stop,
+	.dev_close	      = rtl_dev_close,
+	.dev_reset	      = rtl_dev_reset,
+};
+
+static int
+rtl_dev_configure(struct rte_eth_dev *dev __rte_unused)
+{
+	return 0;
+}
+
+/*
+ * Configure device link speed and setup link.
+ * It returns 0 on success.
+ */
+static int
+rtl_dev_start(struct rte_eth_dev *dev)
+{
+	struct rtl_adapter *adapter = RTL_DEV_PRIVATE(dev);
+	struct rtl_hw *hw = &adapter->hw;
+
+	hw->adapter_stopped = 0;
+
+	return 0;
+}
+
+/*
+ * Stop device: disable RX and TX functions to allow for reconfiguring.
+ */
+static int
+rtl_dev_stop(struct rte_eth_dev *dev)
+{
+	struct rtl_adapter *adapter = RTL_DEV_PRIVATE(dev);
+	struct rtl_hw *hw = &adapter->hw;
+
+	if (hw->adapter_stopped)
+		return 0;
+
+	hw->adapter_stopped = 1;
+	dev->data->dev_started = 0;
+
+	return 0;
+}
+
+/*
+ * Reset and stop device.
+ */
+static int
+rtl_dev_close(struct rte_eth_dev *dev)
+{
+	int ret_stp;
+
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	ret_stp = rtl_dev_stop(dev);
+
+	return ret_stp;
+}
+
+static int
+rtl_dev_init(struct rte_eth_dev *dev)
+{
+	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
+	struct rte_intr_handle *intr_handle = pci_dev->intr_handle;
+	struct rtl_adapter *adapter = RTL_DEV_PRIVATE(dev);
+	struct rtl_hw *hw = &adapter->hw;
+
+	dev->dev_ops = &rtl_eth_dev_ops;
+
+	/* For secondary processes, the primary process has done all the work */
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return 0;
+
+	rte_eth_copy_pci_info(dev, pci_dev);
+
+	return 0;
+}
+
+static int
+rtl_dev_uninit(struct rte_eth_dev *dev)
+{
+	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+		return -EPERM;
+
+	rtl_dev_close(dev);
+
+	return 0;
+}
+
+static int
+rtl_dev_reset(struct rte_eth_dev *dev)
+{
+	int ret;
+
+	ret = rtl_dev_uninit(dev);
+	if (ret)
+		return ret;
+
+	ret = rtl_dev_init(dev);
+
+	return ret;
+}
+
+static int
+rtl_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
+              struct rte_pci_device *pci_dev)
+{
+	return rte_eth_dev_pci_generic_probe(pci_dev, sizeof(struct rtl_adapter),
+	                                     rtl_dev_init);
+}
+
+static int
+rtl_pci_remove(struct rte_pci_device *pci_dev)
+{
+	return rte_eth_dev_pci_generic_remove(pci_dev, rtl_dev_uninit);
+}
+
+static struct rte_pci_driver rte_r8169_pmd = {
+	.id_table  = pci_id_r8169_map,
+	.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
+	.probe     = rtl_pci_probe,
+	.remove    = rtl_pci_remove,
+};
+
+RTE_PMD_REGISTER_PCI(net_r8169, rte_r8169_pmd);
+RTE_PMD_REGISTER_PCI_TABLE(net_r8169, pci_id_r8169_map);
+RTE_PMD_REGISTER_KMOD_DEP(net_r8169, "* igb_uio | uio_pci_generic | vfio-pci");
+
diff --git a/drivers/net/r8169/r8169_ethdev.h b/drivers/net/r8169/r8169_ethdev.h
new file mode 100644
index 0000000000..5453832e04
--- /dev/null
+++ b/drivers/net/r8169/r8169_ethdev.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2024 Realtek Corporation. All rights reserved
+ */
+
+#ifndef _R8169_ETHDEV_H_
+#define _R8169_ETHDEV_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <rte_ethdev.h>
+#include <rte_ethdev_core.h>
+
+#include "r8169_base.h"
+
+struct rtl_hw {
+	u8 adapter_stopped;
+};
+
+struct rtl_sw_stats {
+	u64 tx_packets;
+	u64 tx_bytes;
+	u64 tx_errors;
+	u64 rx_packets;
+	u64 rx_bytes;
+	u64 rx_errors;
+};
+
+struct rtl_adapter {
+	struct rtl_hw       hw;
+	struct rtl_sw_stats sw_stats;
+};
+
+#define RTL_DEV_PRIVATE(eth_dev) \
+	((struct rtl_adapter *)((eth_dev)->data->dev_private))
+
+uint16_t rtl_xmit_pkts(void *txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
+uint16_t rtl_recv_pkts(void *rxq, struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
+
+#endif
+
-- 
2.34.1