[PATCH v4 01/16] net/nbl: add doc and minimum nbl build framework

[Dimon Zhao <dimon.zhao@nebula-matrix.com>]

add minimum PMD code, doc and build infrastructure for nbl driver.

Signed-off-by: Dimon Zhao <dimon.zhao@nebula-matrix.com>
---
 .mailmap                         |  4 ++
 MAINTAINERS                      |  9 ++++
 doc/guides/nics/features/nbl.ini |  9 ++++
 doc/guides/nics/index.rst        |  1 +
 doc/guides/nics/nbl.rst          | 87 ++++++++++++++++++++++++++++++++
 drivers/net/meson.build          |  1 +
 drivers/net/nbl/meson.build      | 11 ++++
 drivers/net/nbl/nbl_ethdev.c     |  3 ++
 8 files changed, 125 insertions(+)
 create mode 100644 doc/guides/nics/features/nbl.ini
 create mode 100644 doc/guides/nics/nbl.rst
 create mode 100644 drivers/net/nbl/meson.build
 create mode 100644 drivers/net/nbl/nbl_ethdev.c

diff --git a/.mailmap b/.mailmap
index 293ec12da0..c9dc467182 100644
--- a/.mailmap
+++ b/.mailmap
@@ -375,6 +375,7 @@ Diana Wang <na.wang@corigine.com>
 Didier Pallard <didier.pallard@6wind.com>
 Dilshod Urazov <dilshod.urazov@oktetlabs.ru>
 Dima Ruinskiy <dima.ruinskiy@intel.com>
+Dimon Zhao <dimon.zhao@nebula-matrix.com>
 Ding Zhi <zhi.ding@6wind.com>
 Diogo Behrens <diogo.behrens@huawei.com>
 Dirk-Holger Lenz <dirk.lenz@ng4t.com>
@@ -857,6 +858,7 @@ Kumar Amber <kumar.amber@intel.com>
 Kumara Parameshwaran <kumaraparamesh92@gmail.com> <kparameshwar@vmware.com>
 Kumar Sanghvi <kumaras@chelsio.com>
 Kyle Larose <klarose@sandvine.com>
+Kyo Liu <kyo.liu@nebula-matrix.com>
 Lance Richardson <lance.richardson@broadcom.com>
 Laszlo Ersek <lersek@redhat.com>
 Laura Stroe <laura.stroe@intel.com>
@@ -871,6 +873,7 @@ Lei Gong <arei.gonglei@huawei.com>
 Lei Ji <jilei8@huawei.com>
 Lei Yao <lei.a.yao@intel.com>
 Leonid Myravjev <myravjev@amicon.ru>
+Leon Yu <leon.yu@nebula-matrix.com>
 Leo Xu <yongquanx@nvidia.com>
 Leszek Zygo <leszek.zygo@intel.com>
 Levend Sayar <levendsayar@gmail.com>
@@ -1389,6 +1392,7 @@ Saikrishna Edupuganti <saikrishna.edupuganti@intel.com>
 Saleh Alsouqi <salehals@nvidia.com> <salehals@mellanox.com>
 Salem Sol <salems@nvidia.com>
 Sam Andrew <samandrew@microsoft.com>
+Sam Chen <sam.chen@nebula-matrix.com>
 Sameh Gobriel <sameh.gobriel@intel.com>
 Sam Grove <sam.grove@sifive.com>
 Samik Gupta <samik.gupta@broadcom.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 7aca98c537..edc93cdda0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1009,6 +1009,15 @@ F: drivers/net/rnp/
 F: doc/guides/nics/rnp.rst
 F: doc/guides/nics/features/rnp.ini
 
+Nebulamatrix nbl
+M: Dimon Zhao <dimon.zhao@nebula-matrix.com>
+M: Kyo Liu<kyo.liu@nebula-matrix.com>
+M: Leon Yu <leon.yu@nebula-matrix.com>
+M: Sam Chen <sam.chen@nebula-matrix.com>
+F: drivers/net/nbl
+F: doc/guides/nics/nbl.rst
+F: doc/guides/nics/features/nbl.ini
+
 Realtek r8169
 M: Howard Wang <howard_wang@realsil.com.cn>
 M: Chunhao Lin <hau@realtek.com>
diff --git a/doc/guides/nics/features/nbl.ini b/doc/guides/nics/features/nbl.ini
new file mode 100644
index 0000000000..6daabe6ed3
--- /dev/null
+++ b/doc/guides/nics/features/nbl.ini
@@ -0,0 +1,9 @@
+;
+; Supported features of the 'nbl' network poll mode driver.
+;
+; Refer to default.ini for the full list of available PMD features.
+;
+[Features]
+Linux                = Y
+ARMv8                = Y
+x86-64               = Y
diff --git a/doc/guides/nics/index.rst b/doc/guides/nics/index.rst
index 57d161c526..84d4ece101 100644
--- a/doc/guides/nics/index.rst
+++ b/doc/guides/nics/index.rst
@@ -50,6 +50,7 @@ Network Interface Controller Drivers
     mvneta
     mvpp2
     netvsc
+    nbl
     nfb
     nfp
     ngbe
diff --git a/doc/guides/nics/nbl.rst b/doc/guides/nics/nbl.rst
new file mode 100644
index 0000000000..94431be859
--- /dev/null
+++ b/doc/guides/nics/nbl.rst
@@ -0,0 +1,87 @@
+.. SPDX-License-Identifier: BSD-3-Clause
+   Copyright 2025 Nebulamatrix Technology Co., Ltd
+
+NBL Poll Mode Driver
+====================
+
+The NBL PMD (**librte_net_nbl**) provides poll mode driver support for
+10/25/50/100/200 Gbps Nebulamatrix Series Network Adapters.
+
+
+Features
+--------
+
+Features of the NBL PMD are:
+
+- Multiple queues for TX and RX
+- Receiver Side Scaling (RSS)
+- Jumbo frames
+
+
+Supported NICs
+--------------
+
+The following Nebulamatrix device models are supported by the same nbl driver:
+
+  - S1205CQ-A00CHT
+  - S1105AS-A00CHT
+  - S1055AS-A00CHT
+  - S1052AS-A00CHT
+  - S1051AS-A00CHT
+  - S1045XS-A00CHT
+  - S1205CQ-A00CSP
+  - S1055AS-A00CSP
+  - S1052AS-A00CSP
+
+
+Linux Prerequisites
+~~~~~~~~~~~~~~~~~~~
+
+This driver relies on kernel drivers for resources allocations and initialization.
+The following dependencies are not part of DPDK and must be installed separately:
+
+- **Kernel modules**
+
+  They provide low level device drivers that manage actual hardware initialization
+  and resources sharing with user-space processes.
+
+  Unlike most other PMDs, these modules must remain loaded and bound to
+  their devices:
+
+  - ``nbl_core``: hardware driver managing Ethernet kernel network devices.
+
+Because the nbl_core kernel driver code has not been upstreamed to the Linux kernel community, it cannot be provided by standard Linux distributions.
+However, the nbl_core kernel driver has been upstreamed to the openEuler and Anolis communities. You can obtain the nbl_core code from the following links:
+
+openEuler community:
+https://gitee.com/openeuler/kernel/pulls/11667
+
+Anolis community:
+https://gitee.com/anolis/cloud-kernel/pulls/5185
+https://gitee.com/anolis/cloud-kernel/pulls/5059
+
+Alternatively, you can contact us to obtain the nbl_core code and installation package.
+
+
+Prerequisites
+-------------
+
+- Follow the DPDK :ref:`Getting Started Guide for Linux <linux_gsg>`
+  to setup the basic DPDK environment.
+
+- Learn about `Nebulamatrix Series NICs
+  <https://www.nebula-matrix.com/main>`_.
+
+
+Multiple Processes
+~~~~~~~~~~~~~~~~~~
+
+The NBL PMD does not support Multiple Processes.
+
+
+Limitations or Known Issues
+---------------------------
+
+32-bit architectures are not supported.
+
+Windows and BSD are not supported yet.
diff --git a/drivers/net/meson.build b/drivers/net/meson.build
index 61f8cddb30..517e78d18b 100644
--- a/drivers/net/meson.build
+++ b/drivers/net/meson.build
@@ -40,6 +40,7 @@ drivers = [
         'mlx5',
         'mvneta',
         'mvpp2',
+        'nbl',
         'netvsc',
         'nfb',
         'nfp',
diff --git a/drivers/net/nbl/meson.build b/drivers/net/nbl/meson.build
new file mode 100644
index 0000000000..68c045a48c
--- /dev/null
+++ b/drivers/net/nbl/meson.build
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2025 NebulaMatrix Technology Co., Ltd.
+
+if not is_linux or not dpdk_conf.get('RTE_ARCH_64')
+    build = false
+    reason = 'only supported on 64bit Linux'
+endif
+
+sources = files(
+        'nbl_ethdev.c',
+)
diff --git a/drivers/net/nbl/nbl_ethdev.c b/drivers/net/nbl/nbl_ethdev.c
new file mode 100644
index 0000000000..3ad8e4033a
--- /dev/null
+++ b/drivers/net/nbl/nbl_ethdev.c
@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2025 Nebulamatrix Technology Co., Ltd.
+ */
-- 
2.34.1