[PATCH v5 net-next 01/11] net/nebula-matrix: add minimum nbl build framework

From: illusion.wang

Date: Thu Feb 26 2026 - 02:43:24 EST

1.Add nbl min build infrastructure for nbl driver.

2.Implemented the framework of pci device initialization.

Signed-off-by: illusion.wang <illusion.wang@xxxxxxxxxxxxxxxxx>
---
.../device_drivers/ethernet/index.rst | 1 +
.../ethernet/nebula-matrix/nbl.rst | 47 ++++++++
MAINTAINERS | 10 ++
drivers/net/ethernet/Kconfig | 1 +
drivers/net/ethernet/Makefile | 1 +
drivers/net/ethernet/nebula-matrix/Kconfig | 36 ++++++
drivers/net/ethernet/nebula-matrix/Makefile | 6 +
.../net/ethernet/nebula-matrix/nbl/Makefile | 11 ++
.../net/ethernet/nebula-matrix/nbl/nbl_core.h | 20 ++++
.../nbl/nbl_include/nbl_include.h | 22 ++++
.../net/ethernet/nebula-matrix/nbl/nbl_main.c | 109 ++++++++++++++++++
11 files changed, 264 insertions(+)
create mode 100644 Documentation/networking/device_drivers/ethernet/nebula-matrix/nbl.rst
create mode 100644 drivers/net/ethernet/nebula-matrix/Kconfig
create mode 100644 drivers/net/ethernet/nebula-matrix/Makefile
create mode 100644 drivers/net/ethernet/nebula-matrix/nbl/Makefile
create mode 100644 drivers/net/ethernet/nebula-matrix/nbl/nbl_core.h
create mode 100644 drivers/net/ethernet/nebula-matrix/nbl/nbl_include/nbl_include.h
create mode 100644 drivers/net/ethernet/nebula-matrix/nbl/nbl_main.c

diff --git a/Documentation/networking/device_drivers/ethernet/index.rst b/Documentation/networking/device_drivers/ethernet/index.rst
index 5f3f06111911..14868fabc1c6 100644
--- a/Documentation/networking/device_drivers/ethernet/index.rst
+++ b/Documentation/networking/device_drivers/ethernet/index.rst
@@ -48,6 +48,7 @@ Contents:
meta/fbnic
microsoft/netvsc
mucse/rnpgbe
+ nebula-matrix/nbl
netronome/nfp
pensando/ionic
pensando/ionic_rdma
diff --git a/Documentation/networking/device_drivers/ethernet/nebula-matrix/nbl.rst b/Documentation/networking/device_drivers/ethernet/nebula-matrix/nbl.rst
new file mode 100644
index 000000000000..c763042ce3ee
--- /dev/null
+++ b/Documentation/networking/device_drivers/ethernet/nebula-matrix/nbl.rst
@@ -0,0 +1,47 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+============================================================
+Linux Base Driver for Nebula-matrix M18100-NIC family
+============================================================
+
+Overview:
+=========
+M18100-NIC is a series of network interface card for the Data Center Area.
+
+The driver supports link-speed 100GbE/25GE/10GE.
+
+M18100-NIC devices support MSI-X interrupt vector for each Tx/Rx queue and
+interrupt moderation.
+
+M18100-NIC devices support also various offload features such as checksum offload,
+Receive-Side Scaling(RSS).
+
+Supported PCI vendor ID/device IDs:
+===================================
+
+1f0f:3403 - M18110 Family PF
+1f0f:3404 - M18110 Lx Family PF
+1f0f:3405 - M18110 Family BASE-T PF
+1f0f:3406 - M18110 Lx Family BASE-T PF
+1f0f:3407 - M18110 Family OCP PF
+1f0f:3408 - M18110 Lx Family OCP PF
+1f0f:3409 - M18110 Family BASE-T OCP PF
+1f0f:340a - M18110 Lx Family BASE-T OCP PF
+1f0f:340b - M18100 Family PF
+1f0f:340c - M18100 Lx Family PF
+1f0f:340d - M18100 Family BASE-T PF
+1f0f:340e - M18100 Lx Family BASE-T PF
+1f0f:340f - M18100 Family OCP PF
+1f0f:3410 - M18100 Lx Family OCP PF
+1f0f:3411 - M18100 Family BASE-T OCP PF
+1f0f:3412 - M18100 Lx Family BASE-T OCP PF
+
+Support
+=======
+
+For more information about M18100-NIC, please visit the following URL:
+https://www.nebula-matrix.com/
+
+If an issue is identified with the released source code on the supported kernel
+with a supported adapter, email the specific information related to the issue to
+open@xxxxxxxxxxxxxxxxx.
diff --git a/MAINTAINERS b/MAINTAINERS
index b8d8a5c41597..ebb0ea561107 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18218,6 +18218,16 @@ F: Documentation/devicetree/bindings/hwmon/nuvoton,nct7363.yaml
F: Documentation/hwmon/nct7363.rst
F: drivers/hwmon/nct7363.c

+NEBULA-MATRIX ETHERNET DRIVER (nebula-matrix)
+M: llusion.Wang <illusion.wang@xxxxxxxxxxxxxxxxx>
+M: Dimon.Zhao <dimon.zhao@xxxxxxxxxxxxxxxxx>
+M: Alvin.Wang <alvin.wang@xxxxxxxxxxxxxxxxx>
+M: Sam Chen <sam.chen@xxxxxxxxxxxxxxxxx>
+L: netdev@xxxxxxxxxxxxxxx
+S: Maintained
+F: Documentation/networking/device_drivers/ethernet/nebula-matrix/*
+F: drivers/net/ethernet/nebula-matrix/
+
NETCONSOLE
M: Breno Leitao <leitao@xxxxxxxxxx>
S: Maintained
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index aa7103e7f47f..3aa005adb90e 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -131,6 +131,7 @@ config FEALNX

source "drivers/net/ethernet/ni/Kconfig"
source "drivers/net/ethernet/natsemi/Kconfig"
+source "drivers/net/ethernet/nebula-matrix/Kconfig"
source "drivers/net/ethernet/netronome/Kconfig"
source "drivers/net/ethernet/8390/Kconfig"
source "drivers/net/ethernet/nvidia/Kconfig"
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index 6615a67a63d5..024a8e91abed 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -68,6 +68,7 @@ obj-$(CONFIG_NET_VENDOR_MUCSE) += mucse/
obj-$(CONFIG_NET_VENDOR_MYRI) += myricom/
obj-$(CONFIG_FEALNX) += fealnx.o
obj-$(CONFIG_NET_VENDOR_NATSEMI) += natsemi/
+obj-$(CONFIG_NET_VENDOR_NEBULA_MATRIX) += nebula-matrix/
obj-$(CONFIG_NET_VENDOR_NETRONOME) += netronome/
obj-$(CONFIG_NET_VENDOR_NI) += ni/
obj-$(CONFIG_NET_VENDOR_NVIDIA) += nvidia/
diff --git a/drivers/net/ethernet/nebula-matrix/Kconfig b/drivers/net/ethernet/nebula-matrix/Kconfig
new file mode 100644
index 000000000000..2e8a5590df00
--- /dev/null
+++ b/drivers/net/ethernet/nebula-matrix/Kconfig
@@ -0,0 +1,36 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Nebula-matrix network device configuration
+#
+
+config NET_VENDOR_NEBULA_MATRIX
+ bool "Nebula-matrix devices"
+ default y
+ help
+ If you have a network (Ethernet) card belonging to this class, say Y.
+ Note that the answer to this question doesn't directly affect the
+ kernel: saying N will just cause the configurator to skip all
+ the questions about Nebula-matrix cards. If you say Y, you will be asked
+ for your specific card in the following questions.
+
+if NET_VENDOR_NEBULA_MATRIX
+
+config NBL
+ tristate "Nebula-matrix Ethernet Controller m18100 Family support"
+ depends on 64BIT && PCI
+ default m
+ select PAGE_POOL
+ help
+ This driver supports Nebula-matrix Ethernet Controller m18100 Family of
+ devices. For more information about this product, go to the product
+ description with smart NIC:
+
+ <http://www.nebula-matrix.com>
+
+ More specific information on configuring the driver is in
+ <file:Documentation/networking/device_drivers/ethernet/nebula-matrix/nbl.rst>.
+
+ To compile this driver as a module, choose M here. The module
+ will be called nbl.
+
+endif # NET_VENDOR_NEBULA_MATRIX
diff --git a/drivers/net/ethernet/nebula-matrix/Makefile b/drivers/net/ethernet/nebula-matrix/Makefile
new file mode 100644
index 000000000000..42cdf2db8f0c
--- /dev/null
+++ b/drivers/net/ethernet/nebula-matrix/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the Nebula-matrix network device drivers.
+#
+
+obj-$(CONFIG_NBL) += nbl/
diff --git a/drivers/net/ethernet/nebula-matrix/nbl/Makefile b/drivers/net/ethernet/nebula-matrix/nbl/Makefile
new file mode 100644
index 000000000000..61587e527d28
--- /dev/null
+++ b/drivers/net/ethernet/nebula-matrix/nbl/Makefile
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2025 Nebula Matrix Limited.
+# Author:
+
+obj-$(CONFIG_NBL) := nbl.o
+
+nbl-objs += nbl_main.o
+
+# Provide include files
+ccflags-y += -I$(srctree)/drivers/net/ethernet/nebula-matrix/nbl/nbl_include/
+ccflags-y += -I$(srctree)/drivers/net/ethernet/nebula-matrix/nbl/
diff --git a/drivers/net/ethernet/nebula-matrix/nbl/nbl_core.h b/drivers/net/ethernet/nebula-matrix/nbl/nbl_core.h
new file mode 100644
index 000000000000..cf425dc8beb7
--- /dev/null
+++ b/drivers/net/ethernet/nebula-matrix/nbl/nbl_core.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2025 Nebula Matrix Limited.
+ * Author:
+ */
+
+#ifndef _NBL_CORE_H_
+#define _NBL_CORE_H_
+
+#include <linux/pci.h>
+#include "nbl_include.h"
+
+enum {
+ NBL_CAP_HAS_CTRL_BIT = BIT(0),
+ NBL_CAP_HAS_NET_BIT = BIT(1),
+ NBL_CAP_IS_NIC_BIT = BIT(2),
+ NBL_CAP_IS_LEONIS_BIT = BIT(3),
+};
+
+#endif
diff --git a/drivers/net/ethernet/nebula-matrix/nbl/nbl_include/nbl_include.h b/drivers/net/ethernet/nebula-matrix/nbl/nbl_include/nbl_include.h
new file mode 100644
index 000000000000..6179e2145b33
--- /dev/null
+++ b/drivers/net/ethernet/nebula-matrix/nbl/nbl_include/nbl_include.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2025 Nebula Matrix Limited.
+ * Author:
+ */
+
+#ifndef _NBL_INCLUDE_H_
+#define _NBL_INCLUDE_H_
+
+#include <linux/types.h>
+
+/* ------ Basic definitions ------- */
+#define NBL_DRIVER_NAME "nbl"
+
+struct nbl_func_caps {
+ u32 has_ctrl:1;
+ u32 has_net:1;
+ u32 is_nic:1;
+ u32 rsv:29;
+};
+
+#endif
diff --git a/drivers/net/ethernet/nebula-matrix/nbl/nbl_main.c b/drivers/net/ethernet/nebula-matrix/nbl/nbl_main.c
new file mode 100644
index 000000000000..e1767604fe03
--- /dev/null
+++ b/drivers/net/ethernet/nebula-matrix/nbl/nbl_main.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2025 Nebula Matrix Limited.
+ * Author:
+ */
+
+#include <linux/aer.h>
+#include "nbl_core.h"
+
+static int nbl_probe(struct pci_dev *pdev,
+ const struct pci_device_id __always_unused *id)
+{
+ return 0;
+}
+
+static void nbl_remove(struct pci_dev *pdev)
+{
+}
+
+#define NBL_VENDOR_ID (0x1F0F)
+
+/*
+ * Leonis DeviceID
+ * 0x3403-0x340d for snic v3r1 product
+ */
+#define NBL_DEVICE_ID_M18110 (0x3403)
+#define NBL_DEVICE_ID_M18110_LX (0x3404)
+#define NBL_DEVICE_ID_M18110_BASE_T (0x3405)
+#define NBL_DEVICE_ID_M18110_LX_BASE_T (0x3406)
+#define NBL_DEVICE_ID_M18110_OCP (0x3407)
+#define NBL_DEVICE_ID_M18110_LX_OCP (0x3408)
+#define NBL_DEVICE_ID_M18110_BASE_T_OCP (0x3409)
+#define NBL_DEVICE_ID_M18110_LX_BASE_T_OCP (0x340a)
+#define NBL_DEVICE_ID_M18000 (0x340b)
+#define NBL_DEVICE_ID_M18000_LX (0x340c)
+#define NBL_DEVICE_ID_M18000_BASE_T (0x340d)
+#define NBL_DEVICE_ID_M18000_LX_BASE_T (0x340e)
+#define NBL_DEVICE_ID_M18000_OCP (0x340f)
+#define NBL_DEVICE_ID_M18000_LX_OCP (0x3410)
+#define NBL_DEVICE_ID_M18000_BASE_T_OCP (0x3411)
+#define NBL_DEVICE_ID_M18000_LX_BASE_T_OCP (0x3412)
+
+static const struct pci_device_id nbl_id_table[] = {
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18110),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18110_LX),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18110_BASE_T),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18110_LX_BASE_T),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18110_OCP),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18110_LX_OCP),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18110_BASE_T_OCP),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18110_LX_BASE_T_OCP),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18000),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18000_LX),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18000_BASE_T),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18000_LX_BASE_T),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18000_OCP),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18000_LX_OCP),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18000_BASE_T_OCP),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ { PCI_DEVICE(NBL_VENDOR_ID, NBL_DEVICE_ID_M18000_LX_BASE_T_OCP),
+ .driver_data = NBL_CAP_HAS_NET_BIT | NBL_CAP_IS_NIC_BIT |
+ NBL_CAP_IS_LEONIS_BIT },
+ /* required as sentinel */
+ {
+ 0,
+ }
+};
+MODULE_DEVICE_TABLE(pci, nbl_id_table);
+
+static struct pci_driver nbl_driver = {
+ .name = NBL_DRIVER_NAME,
+ .id_table = nbl_id_table,
+ .probe = nbl_probe,
+ .remove = nbl_remove,
+};
+
+module_pci_driver(nbl_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Nebula Matrix Network Driver");
--
2.47.3