From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>, Michael Neuling <mikey@neuling.org>
Subject: [PATCH v2 1/2] powerpc: add POWER9_DD20 feature
Date: Thu, 2 Nov 2017 12:55:34 +1100 [thread overview]
Message-ID: <20171102015535.30843-2-npiggin@gmail.com> (raw)
In-Reply-To: <20171102015535.30843-1-npiggin@gmail.com>
Cc: Michael Neuling <mikey@neuling.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/include/asm/cputable.h | 5 ++++-
arch/powerpc/kernel/cputable.c | 20 ++++++++++++++++++++
arch/powerpc/kernel/dt_cpu_ftrs.c | 2 ++
3 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index a9bf921f4efc..194dc3006446 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -215,6 +215,7 @@ enum {
#define CPU_FTR_DABRX LONG_ASM_CONST(0x0800000000000000)
#define CPU_FTR_PMAO_BUG LONG_ASM_CONST(0x1000000000000000)
#define CPU_FTR_POWER9_DD1 LONG_ASM_CONST(0x4000000000000000)
+#define CPU_FTR_POWER9_DD20 LONG_ASM_CONST(0x8000000000000000)
#ifndef __ASSEMBLY__
@@ -477,6 +478,7 @@ enum {
CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_ARCH_300)
#define CPU_FTRS_POWER9_DD1 ((CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD1) & \
(~CPU_FTR_SAO))
+#define CPU_FTRS_POWER9_DD20 (CPU_FTRS_POWER9 | CPU_FTR_POWER9_DD20)
#define CPU_FTRS_CELL (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \
CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \
CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \
@@ -495,7 +497,8 @@ enum {
(CPU_FTRS_POWER4 | CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \
CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \
CPU_FTRS_POWER8 | CPU_FTRS_POWER8_DD1 | CPU_FTRS_CELL | \
- CPU_FTRS_PA6T | CPU_FTR_VSX | CPU_FTRS_POWER9 | CPU_FTRS_POWER9_DD1)
+ CPU_FTRS_PA6T | CPU_FTR_VSX | CPU_FTRS_POWER9 | \
+ CPU_FTRS_POWER9_DD1 | CPU_FTRS_POWER9_DD20)
#endif
#else
enum {
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 760872916013..171820190de7 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -547,6 +547,26 @@ static struct cpu_spec __initdata cpu_specs[] = {
.machine_check_early = __machine_check_early_realmode_p9,
.platform = "power9",
},
+ { /* Power9 DD2.0 */
+ .pvr_mask = 0xffffefff,
+ .pvr_value = 0x004e0200,
+ .cpu_name = "POWER9 (raw)",
+ .cpu_features = CPU_FTRS_POWER9_DD20,
+ .cpu_user_features = COMMON_USER_POWER9,
+ .cpu_user_features2 = COMMON_USER2_POWER9,
+ .mmu_features = MMU_FTRS_POWER9,
+ .icache_bsize = 128,
+ .dcache_bsize = 128,
+ .num_pmcs = 6,
+ .pmc_type = PPC_PMC_IBM,
+ .oprofile_cpu_type = "ppc64/power9",
+ .oprofile_type = PPC_OPROFILE_INVALID,
+ .cpu_setup = __setup_cpu_power9,
+ .cpu_restore = __restore_cpu_power9,
+ .flush_tlb = __flush_tlb_power9,
+ .machine_check_early = __machine_check_early_realmode_p9,
+ .platform = "power9",
+ },
{ /* Power9 */
.pvr_mask = 0xffff0000,
.pvr_value = 0x004e0000,
diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c
index 7275fed271af..63b9d7edd63f 100644
--- a/arch/powerpc/kernel/dt_cpu_ftrs.c
+++ b/arch/powerpc/kernel/dt_cpu_ftrs.c
@@ -735,6 +735,8 @@ static __init void cpufeatures_cpu_quirks(void)
*/
if ((version & 0xffffff00) == 0x004e0100)
cur_cpu_spec->cpu_features |= CPU_FTR_POWER9_DD1;
+ else if ((version & 0xffffefff) == 0x004e0200)
+ cur_cpu_spec->cpu_features |= CPU_FTR_POWER9_DD20;
}
static void __init cpufeatures_setup_finished(void)
--
2.15.0
next prev parent reply other threads:[~2017-11-02 1:55 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-02 1:55 [PATCH v2 0/2] Add POWER9 DD2.0 feature, remove idle workarounds in DD2.1 Nicholas Piggin
2017-11-02 1:55 ` Nicholas Piggin [this message]
2017-11-02 1:55 ` [PATCH v2 2/2] powerpc/64s: idle skip POWER9 DD1 and DD2.0 specific workarounds on DD2.1 Nicholas Piggin
2017-11-03 1:13 ` Michael Neuling
2017-11-03 4:22 ` Nicholas Piggin
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