[v3 18/24] meson: introduce LoongArch architecture

[Min Zhou <zhoumin@loongson.cn>]

This patch adds some meson.build files for building DPDK on
LoongArch architecture.

Signed-off-by: Min Zhou <zhoumin@loongson.cn>
---
 .../loongarch/loongarch_loongarch64_linux_gcc | 16 +++++++
 config/loongarch/meson.build                  | 43 +++++++++++++++++++
 lib/eal/loongarch/include/meson.build         | 21 +++++++++
 lib/eal/loongarch/meson.build                 | 11 +++++
 meson.build                                   |  2 +
 5 files changed, 93 insertions(+)
 create mode 100644 config/loongarch/loongarch_loongarch64_linux_gcc
 create mode 100644 config/loongarch/meson.build
 create mode 100644 lib/eal/loongarch/include/meson.build
 create mode 100644 lib/eal/loongarch/meson.build

diff --git a/config/loongarch/loongarch_loongarch64_linux_gcc b/config/loongarch/loongarch_loongarch64_linux_gcc
new file mode 100644
index 0000000000..0c44ae96e6
--- /dev/null
+++ b/config/loongarch/loongarch_loongarch64_linux_gcc
@@ -0,0 +1,16 @@
+[binaries]
+c = 'loongarch64-unknown-linux-gnu-gcc'
+cpp = 'loongarch64-unknown-linux-gnu-cpp'
+ar = 'loongarch64-unknown-linux-gnu-gcc-ar'
+strip = 'loongarch64-unknown-linux-gnu-strip'
+pcap-config = ''
+
+[host_machine]
+system = 'linux'
+cpu_family = 'loongarch64'
+cpu = '3a5000'
+endian = 'little'
+
+[properties]
+implementor_id = 'generic'
+implementor_pn = 'default'
diff --git a/config/loongarch/meson.build b/config/loongarch/meson.build
new file mode 100644
index 0000000000..d58e1ea6e9
--- /dev/null
+++ b/config/loongarch/meson.build
@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2022 Loongson Technology Corporation Limited
+
+if not dpdk_conf.get('RTE_ARCH_64')
+	error('Only 64-bit compiles are supported for this platform type')
+endif
+dpdk_conf.set('RTE_ARCH', 'loongarch')
+dpdk_conf.set('RTE_ARCH_LOONGARCH', 1)
+dpdk_conf.set('RTE_ARCH_NO_VECTOR', 1)
+
+machine_args_generic = [
+    ['default', ['-march=loongarch64']],
+]
+
+flags_generic = [
+    ['RTE_MACHINE', '"loongarch64"'],
+    ['RTE_MAX_LCORE', 64],
+    ['RTE_MAX_NUMA_NODES', 16],
+    ['RTE_CACHE_LINE_SIZE', 64]]
+
+impl_generic = ['Generic loongarch', flags_generic, machine_args_generic]
+
+machine = []
+machine_args = []
+
+machine = impl_generic
+impl_pn = 'default'
+
+message('Implementer : ' + machine[0])
+foreach flag: machine[1]
+    if flag.length() > 0
+dpdk_conf.set(flag[0], flag[1])
+    endif
+endforeach
+
+foreach marg: machine[2]
+    if marg[0] == impl_pn
+        foreach f: marg[1]
+           machine_args += f
+        endforeach
+    endif
+endforeach
+message(machine_args)
diff --git a/lib/eal/loongarch/include/meson.build b/lib/eal/loongarch/include/meson.build
new file mode 100644
index 0000000000..d5699c5373
--- /dev/null
+++ b/lib/eal/loongarch/include/meson.build
@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2022 Loongson Technology Corporation Limited
+
+arch_headers = files(
+	'rte_atomic.h',
+	'rte_byteorder.h',
+	'rte_cpuflags.h',
+	'rte_cycles.h',
+	'rte_io.h',
+	'rte_mcslock.h',
+	'rte_memcpy.h',
+	'rte_pause.h',
+	'rte_pflock.h',
+	'rte_power_intrinsics.h',
+	'rte_prefetch.h',
+	'rte_rwlock.h',
+	'rte_spinlock.h',
+	'rte_ticketlock.h',
+	'rte_vect.h',
+)
+install_headers(arch_headers, subdir: get_option('include_subdir_arch'))
diff --git a/lib/eal/loongarch/meson.build b/lib/eal/loongarch/meson.build
new file mode 100644
index 0000000000..e14b1ed431
--- /dev/null
+++ b/lib/eal/loongarch/meson.build
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2022 Loongson Technology Corporation Limited
+
+subdir('include')
+
+sources += files(
+	'rte_cpuflags.c',
+	'rte_cycles.c',
+	'rte_hypervisor.c',
+	'rte_power_intrinsics.c',
+)
diff --git a/meson.build b/meson.build
index 5561171617..bfad7b28a0 100644
--- a/meson.build
+++ b/meson.build
@@ -52,6 +52,8 @@ elif host_machine.cpu_family().startswith('arm') or host_machine.cpu_family().st
     arch_subdir = 'arm'
 elif host_machine.cpu_family().startswith('ppc')
     arch_subdir = 'ppc'
+elif host_machine.cpu_family().startswith('loongarch')
+    arch_subdir = 'loongarch'
 endif
 
 # configure the build, and make sure configs here and in config folder are
-- 
2.31.1