build: detect micro-arch on ARM

[dpdk.git] / config / arm / meson.build

diff --git a/config/arm/meson.build b/config/arm/meson.build
index f05de4c..a5bfb96 100644 (file)
--- a/config/arm/meson.build
+++ b/config/arm/meson.build
@@ -5,28 +5,110 @@
 # for checking defines we need to use the correct compiler flags
 march_opt = '-march=@0@'.format(machine)
 
-dpdk_conf.set('RTE_FORCE_INTRINSICS', 1)
-if cc.sizeof('void *') == 8
-       dpdk_conf.set('RTE_CACHE_LINE_SIZE', 128)
-       dpdk_conf.set('RTE_ARCH_ARM64', 1)
-       dpdk_conf.set('RTE_ARCH_64', 1)
+machine_args_generic = [
+       ['default', ['-march=armv8-a+crc+crypto']]]
+machine_args_cavium = [
+       ['default', ['-march=armv8-a+crc+crypto','-mcpu=thunderx']],
+       ['0xa1', ['-mcpu=thunderxt88']],
+       ['0xa2', ['-mcpu=thunderxt81']],
+       ['0xa3', ['-mcpu=thunderxt83']]]
+
+flags_generic = [[]]
+flags_cavium = [
+       ['RTE_MACHINE', '"thunderx"'],
+       ['RTE_CACHE_LINE_SIZE', 128],
+       ['RTE_MAX_NUMA_NODES', 2],
+       ['RTE_MAX_LCORE', 96],
+       ['RTE_MAX_VFIO_GROUPS', 128],
+       ['RTE_RING_USE_C11_MEM_MODEL', false]]
+
+impl_generic = ['Generic armv8', flags_generic, machine_args_generic]
+impl_0x43 = ['Cavium', flags_cavium, machine_args_cavium]
+
+if cc.get_define('__clang__') != ''
+       dpdk_conf.set_quoted('RTE_TOOLCHAIN', 'clang')
+       dpdk_conf.set('RTE_TOOLCHAIN_CLANG', 1)
 else
+       dpdk_conf.set_quoted('RTE_TOOLCHAIN', 'gcc')
+       dpdk_conf.set('RTE_TOOLCHAIN_GCC', 1)
+endif
+
+dpdk_conf.set('RTE_FORCE_INTRINSICS', 1)
+
+if cc.sizeof('void *') != 8
        dpdk_conf.set('RTE_CACHE_LINE_SIZE', 64)
        dpdk_conf.set('RTE_ARCH_ARM', 1)
        dpdk_conf.set('RTE_ARCH_ARMv7', 1)
+else
+       dpdk_conf.set('RTE_CACHE_LINE_SIZE', 128)
+       dpdk_conf.set('RTE_ARCH_ARM64', 1)
+       dpdk_conf.set('RTE_ARCH_64', 1)
+
+       machine = []
+       cmd_generic = ['generic', '', '', 'default', '']
+       cmd_output = cmd_generic # Set generic by default
+       machine_args = [] # Clear previous machine args
+       if not meson.is_cross_build()
+               # The script returns ['Implementer', 'Variant', 'Architecture',
+               # 'Primary Part number', 'Revision']
+               detect_vendor = find_program(join_paths(
+                               meson.current_source_dir(), 'armv8_machine.py'))
+               cmd = run_command(detect_vendor.path())
+               if cmd.returncode() == 0
+                       cmd_output = cmd.stdout().strip().split(' ')
+               endif
+               # Set to generic if variable is not found
+               machine = get_variable('impl_' + cmd_output[0], 'generic')
+       else
+               impl_id = meson.get_cross_property('implementor_id', 'generic')
+               machine = get_variable('impl_' + impl_id)
+       endif
+
+       if machine == 'generic'
+               machine = impl_generic
+               cmd_output = cmd_generic
+       endif
+
+       message('Implementer : ' + machine[0])
+       foreach flag: machine[1]
+               if flag.length() > 0
+                       dpdk_conf.set(flag[0], flag[1])
+               endif
+       endforeach
+       # Primary part number based mcpu flags are supported
+       # for gcc versions > 7
+       if cc.version().version_compare(
+                       '<7.0') or cmd_output.length() == 0
+               foreach marg: machine[2]
+                       if marg[0] == 'default'
+                               foreach f: marg[1]
+                                       machine_args += f
+                               endforeach
+                       endif
+               endforeach
+       else
+               foreach marg: machine[2]
+                       if marg[0] == cmd_output[3]
+                               foreach f: marg[1]
+                                       machine_args += f
+                               endforeach
+                       endif
+               endforeach
+       endif
 endif
+message(machine_args)
 
-if cc.get_define('__ARM_NEON', args: march_opt) != ''
+if cc.get_define('__ARM_NEON', args: machine_args) != ''
        dpdk_conf.set('RTE_MACHINE_CPUFLAG_NEON', 1)
        compile_time_cpuflags += ['RTE_CPUFLAG_NEON']
 endif
 
-if cc.get_define('__ARM_FEATURE_CRC32', args: march_opt) != ''
+if cc.get_define('__ARM_FEATURE_CRC32', args: machine_args) != ''
        dpdk_conf.set('RTE_MACHINE_CPUFLAG_CRC32', 1)
        compile_time_cpuflags += ['RTE_CPUFLAG_CRC32']
 endif
 
-if cc.get_define('__ARM_FEATURE_CRYPTO', args: march_opt) != ''
+if cc.get_define('__ARM_FEATURE_CRYPTO', args: machine_args) != ''
        dpdk_conf.set('RTE_MACHINE_CPUFLAG_AES', 1)
        dpdk_conf.set('RTE_MACHINE_CPUFLAG_PMULL', 1)
        dpdk_conf.set('RTE_MACHINE_CPUFLAG_SHA1', 1)