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authorDamjan Marion <damarion@cisco.com>2023-09-12 15:08:58 +0200
committerDave Wallace <dwallacelf@gmail.com>2023-09-13 15:02:43 +0000
commit7bf8f5e484a49fd90db1c4c4e38d82810bddada8 (patch)
tree8f7b10dd9fe95eaadfcc591af3ac69be03b66546
parent3d2f718e6fece410a903474741487fdff9d5cb27 (diff)
vppinfra: add ARM Neoverse-N2 support
Type: improvement Change-Id: Ief77ae7338667ede290aece6933bb5ae2e76ffc6 Signed-off-by: Damjan Marion <damarion@cisco.com>
-rw-r--r--src/cmake/cpu.cmake7
-rw-r--r--src/vppinfra/cpu.c74
-rw-r--r--src/vppinfra/cpu.h144
3 files changed, 131 insertions, 94 deletions
diff --git a/src/cmake/cpu.cmake b/src/cmake/cpu.cmake
index 69f83c98b8d..f683b62b8f4 100644
--- a/src/cmake/cpu.cmake
+++ b/src/cmake/cpu.cmake
@@ -194,6 +194,13 @@ elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)")
N_PREFETCHES 6
CACHE_PREFETCH_BYTES 64
)
+
+ add_vpp_march_variant(neoversen2
+ FLAGS -march=armv8.6-a+crc+crypto+sve2 -mtune=neoverse-n2
+ N_PREFETCHES 8
+ CACHE_PREFETCH_BYTES 64
+ OFF
+ )
endif()
macro(vpp_library_set_multiarch_sources lib)
diff --git a/src/vppinfra/cpu.c b/src/vppinfra/cpu.c
index b66dd4968ad..79e7dc0955e 100644
--- a/src/vppinfra/cpu.c
+++ b/src/vppinfra/cpu.c
@@ -71,21 +71,22 @@
_ (0x06, 0x17, "Penryn", "Yorkfield,Wolfdale,Penryn,Harpertown")
/* _(implementor-id, part-id, vendor-name, cpu-name, show CPU pass as string) */
-#define foreach_aarch64_cpu_uarch \
- _(0x41, 0xd03, "ARM", "Cortex-A53", 0) \
- _(0x41, 0xd07, "ARM", "Cortex-A57", 0) \
- _(0x41, 0xd08, "ARM", "Cortex-A72", 0) \
- _(0x41, 0xd09, "ARM", "Cortex-A73", 0) \
- _(0x41, 0xd0a, "ARM", "Cortex-A75", 0) \
- _(0x41, 0xd0b, "ARM", "Cortex-A76", 0) \
- _(0x41, 0xd0c, "ARM", "Neoverse-N1", 0) \
- _(0x41, 0xd4a, "ARM", "Neoverse-E1", 0) \
- _(0x43, 0x0a1, "Marvell", "THUNDERX CN88XX", 0) \
- _(0x43, 0x0a2, "Marvell", "OCTEON TX CN81XX", 0) \
- _(0x43, 0x0a3, "Marvell", "OCTEON TX CN83XX", 0) \
- _(0x43, 0x0af, "Marvell", "THUNDERX2 CN99XX", 1) \
- _(0x43, 0x0b1, "Marvell", "OCTEON TX2 CN98XX", 1) \
- _(0x43, 0x0b2, "Marvell", "OCTEON TX2 CN96XX", 1)
+#define foreach_aarch64_cpu_uarch \
+ _ (0x41, 0xd03, "ARM", "Cortex-A53", 0) \
+ _ (0x41, 0xd07, "ARM", "Cortex-A57", 0) \
+ _ (0x41, 0xd08, "ARM", "Cortex-A72", 0) \
+ _ (0x41, 0xd09, "ARM", "Cortex-A73", 0) \
+ _ (0x41, 0xd0a, "ARM", "Cortex-A75", 0) \
+ _ (0x41, 0xd0b, "ARM", "Cortex-A76", 0) \
+ _ (0x41, 0xd0c, "ARM", "Neoverse-N1", 0) \
+ _ (0x41, 0xd49, "ARM", "Neoverse-N2", 0) \
+ _ (0x41, 0xd4a, "ARM", "Neoverse-E1", 0) \
+ _ (0x43, 0x0a1, "Marvell", "THUNDERX CN88XX", 0) \
+ _ (0x43, 0x0a2, "Marvell", "OCTEON TX CN81XX", 0) \
+ _ (0x43, 0x0a3, "Marvell", "OCTEON TX CN83XX", 0) \
+ _ (0x43, 0x0af, "Marvell", "THUNDERX2 CN99XX", 1) \
+ _ (0x43, 0x0b1, "Marvell", "OCTEON TX2 CN98XX", 1) \
+ _ (0x43, 0x0b2, "Marvell", "OCTEON TX2 CN96XX", 1)
__clib_export u8 *
format_cpu_uarch (u8 * s, va_list * args)
@@ -276,10 +277,39 @@ format_march_variant (u8 *s, va_list *args)
return format (s, "%s", variants[t]);
}
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
+#ifdef __aarch64__
+
+__clib_export const clib_cpu_info_t *
+clib_get_cpu_info ()
+{
+ static int first_run = 1;
+ static clib_cpu_info_t info = {};
+ if (first_run)
+ {
+ FILE *fp = fopen ("/proc/cpuinfo", "r");
+ char buf[128];
+
+ if (!fp)
+ return 0;
+
+ while (!feof (fp))
+ {
+ if (!fgets (buf, sizeof (buf), fp))
+ break;
+ buf[127] = '\0';
+ if (strstr (buf, "CPU part"))
+ info.aarch64.part_num =
+ strtol (memchr (buf, ':', 128) + 2, NULL, 0);
+
+ if (strstr (buf, "CPU implementer"))
+ info.aarch64.implementer =
+ strtol (memchr (buf, ':', 128) + 2, NULL, 0);
+ }
+ fclose (fp);
+
+ first_run = 0;
+ }
+ return &info;
+}
+
+#endif
diff --git a/src/vppinfra/cpu.h b/src/vppinfra/cpu.h
index 017ecb1ca0e..7a1b75fcf7d 100644
--- a/src/vppinfra/cpu.h
+++ b/src/vppinfra/cpu.h
@@ -36,7 +36,8 @@
_ (thunderx2t99, "Marvell ThunderX2 T99") \
_ (qdf24xx, "Qualcomm CentriqTM 2400") \
_ (cortexa72, "ARM Cortex-A72") \
- _ (neoversen1, "ARM Neoverse N1")
+ _ (neoversen1, "ARM Neoverse N1") \
+ _ (neoversen2, "ARM Neoverse N2")
#else
#define foreach_march_variant
#endif
@@ -337,116 +338,115 @@ clib_get_pmu_counter_count (u8 *fixed, u8 *general)
#endif
}
-static inline u32
-clib_cpu_implementer ()
+typedef struct
{
- char buf[128];
- static u32 implementer = -1;
-
- if (-1 != implementer)
- return implementer;
-
- FILE *fp = fopen ("/proc/cpuinfo", "r");
- if (!fp)
- return implementer;
-
- while (!feof (fp))
- {
- if (!fgets (buf, sizeof (buf), fp))
- break;
- buf[127] = '\0';
- if (strstr (buf, "CPU implementer"))
- implementer = (u32) strtol (memchr (buf, ':', 128) + 2, NULL, 0);
- if (-1 != implementer)
- break;
- }
- fclose (fp);
-
- return implementer;
-}
-
-static inline u32
-clib_cpu_part ()
-{
- char buf[128];
- static u32 part = -1;
-
- if (-1 != part)
- return part;
-
- FILE *fp = fopen ("/proc/cpuinfo", "r");
- if (!fp)
- return part;
-
- while (!feof (fp))
- {
- if (!fgets (buf, sizeof (buf), fp))
- break;
- buf[127] = '\0';
- if (strstr (buf, "CPU part"))
- part = (u32) strtol (memchr (buf, ':', 128) + 2, NULL, 0);
- if (-1 != part)
- break;
- }
- fclose (fp);
-
- return part;
-}
-
+ struct
+ {
+ u8 implementer;
+ u16 part_num;
+ } aarch64;
+} clib_cpu_info_t;
+
+const clib_cpu_info_t *clib_get_cpu_info ();
+
+/* ARM */
+#define AARCH64_CPU_IMPLEMENTER_ARM 0x41
+#define AARCH64_CPU_PART_CORTEXA72 0xd08
+#define AARCH64_CPU_PART_NEOVERSEN1 0xd0c
+#define AARCH64_CPU_PART_NEOVERSEN2 0xd49
+
+/*cavium */
#define AARCH64_CPU_IMPLEMENTER_CAVIUM 0x43
#define AARCH64_CPU_PART_THUNDERX2 0x0af
#define AARCH64_CPU_PART_OCTEONTX2T96 0x0b2
#define AARCH64_CPU_PART_OCTEONTX2T98 0x0b1
-#define AARCH64_CPU_IMPLEMENTER_QDF24XX 0x51
+
+/* Qualcomm */
+#define AARCH64_CPU_IMPLEMENTER_QUALCOMM 0x51
#define AARCH64_CPU_PART_QDF24XX 0xc00
-#define AARCH64_CPU_IMPLEMENTER_CORTEXA72 0x41
-#define AARCH64_CPU_PART_CORTEXA72 0xd08
-#define AARCH64_CPU_IMPLEMENTER_NEOVERSEN1 0x41
-#define AARCH64_CPU_PART_NEOVERSEN1 0xd0c
static inline int
clib_cpu_march_priority_octeontx2 ()
{
- if ((AARCH64_CPU_IMPLEMENTER_CAVIUM == clib_cpu_implementer ()) &&
- ((AARCH64_CPU_PART_OCTEONTX2T96 == clib_cpu_part ())
- || AARCH64_CPU_PART_OCTEONTX2T98 == clib_cpu_part ()))
+ const clib_cpu_info_t *info = clib_get_cpu_info ();
+
+ if (!info || info->aarch64.implementer != AARCH64_CPU_IMPLEMENTER_CAVIUM)
+ return -1;
+
+ if (info->aarch64.part_num == AARCH64_CPU_PART_OCTEONTX2T96 ||
+ info->aarch64.part_num == AARCH64_CPU_PART_OCTEONTX2T98)
return 20;
+
return -1;
}
static inline int
clib_cpu_march_priority_thunderx2t99 ()
{
- if ((AARCH64_CPU_IMPLEMENTER_CAVIUM == clib_cpu_implementer ()) &&
- (AARCH64_CPU_PART_THUNDERX2 == clib_cpu_part ()))
+ const clib_cpu_info_t *info = clib_get_cpu_info ();
+
+ if (!info || info->aarch64.implementer != AARCH64_CPU_IMPLEMENTER_CAVIUM)
+ return -1;
+
+ if (info->aarch64.part_num == AARCH64_CPU_PART_THUNDERX2)
return 20;
+
return -1;
}
static inline int
clib_cpu_march_priority_qdf24xx ()
{
- if ((AARCH64_CPU_IMPLEMENTER_QDF24XX == clib_cpu_implementer ()) &&
- (AARCH64_CPU_PART_QDF24XX == clib_cpu_part ()))
+ const clib_cpu_info_t *info = clib_get_cpu_info ();
+
+ if (!info || info->aarch64.implementer != AARCH64_CPU_IMPLEMENTER_QUALCOMM)
+ return -1;
+
+ if (info->aarch64.part_num == AARCH64_CPU_PART_QDF24XX)
return 20;
+
return -1;
}
static inline int
clib_cpu_march_priority_cortexa72 ()
{
- if ((AARCH64_CPU_IMPLEMENTER_CORTEXA72 == clib_cpu_implementer ()) &&
- (AARCH64_CPU_PART_CORTEXA72 == clib_cpu_part ()))
+ const clib_cpu_info_t *info = clib_get_cpu_info ();
+
+ if (!info || info->aarch64.implementer != AARCH64_CPU_IMPLEMENTER_ARM)
+ return -1;
+
+ if (info->aarch64.part_num == AARCH64_CPU_PART_CORTEXA72)
return 10;
+
return -1;
}
static inline int
clib_cpu_march_priority_neoversen1 ()
{
- if ((AARCH64_CPU_IMPLEMENTER_NEOVERSEN1 == clib_cpu_implementer ()) &&
- (AARCH64_CPU_PART_NEOVERSEN1 == clib_cpu_part ()))
+ const clib_cpu_info_t *info = clib_get_cpu_info ();
+
+ if (!info || info->aarch64.implementer != AARCH64_CPU_IMPLEMENTER_ARM)
+ return -1;
+
+ if (info->aarch64.part_num == AARCH64_CPU_PART_NEOVERSEN1)
return 10;
+
+ return -1;
+}
+
+static inline int
+clib_cpu_march_priority_neoversen2 ()
+{
+ const clib_cpu_info_t *info = clib_get_cpu_info ();
+
+ if (!info || info->aarch64.implementer != AARCH64_CPU_IMPLEMENTER_ARM)
+ return -1;
+
+ if (info->aarch64.part_num == AARCH64_CPU_PART_NEOVERSEN2)
+ return 10;
+
return -1;
}