From: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
To: mpe@ellerman.id.au, mikey@neuling.org
Cc: christophe.leroy@c-s.fr, ravi.bangoria@linux.ibm.com,
apopple@linux.ibm.com, peterz@infradead.org, fweisbec@gmail.com,
miltonm@us.ibm.com, oleg@redhat.com, npiggin@gmail.com,
linux-kernel@vger.kernel.org, paulus@samba.org, jolsa@kernel.org,
pedromfc@br.ibm.com, naveen.n.rao@linux.vnet.ibm.com,
linuxppc-dev@lists.ozlabs.org, mingo@kernel.org
Subject: [PATCH v3 4/9] powerpc/dt_cpu_ftrs: Add feature for 2nd DAWR
Date: Wed, 8 Jul 2020 10:20:41 +0530 [thread overview]
Message-ID: <20200708045046.135702-5-ravi.bangoria@linux.ibm.com> (raw)
In-Reply-To: <20200708045046.135702-1-ravi.bangoria@linux.ibm.com>
Add new device-tree feature for 2nd DAWR. If this feature is present,
2nd DAWR is supported, otherwise not.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
---
arch/powerpc/include/asm/cputable.h | 7 +++++--
arch/powerpc/kernel/dt_cpu_ftrs.c | 7 +++++++
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index e506d429b1af..3445c86e1f6f 100644
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -214,6 +214,7 @@ static inline void cpu_feature_keys_init(void) { }
#define CPU_FTR_P9_TLBIE_ERAT_BUG LONG_ASM_CONST(0x0001000000000000)
#define CPU_FTR_P9_RADIX_PREFETCH_BUG LONG_ASM_CONST(0x0002000000000000)
#define CPU_FTR_ARCH_31 LONG_ASM_CONST(0x0004000000000000)
+#define CPU_FTR_DAWR1 LONG_ASM_CONST(0x0008000000000000)
#ifndef __ASSEMBLY__
@@ -497,14 +498,16 @@ static inline void cpu_feature_keys_init(void) { }
#define CPU_FTRS_POSSIBLE \
(CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | CPU_FTRS_POWER8 | \
CPU_FTR_ALTIVEC_COMP | CPU_FTR_VSX_COMP | CPU_FTRS_POWER9 | \
- CPU_FTRS_POWER9_DD2_1 | CPU_FTRS_POWER9_DD2_2 | CPU_FTRS_POWER10)
+ CPU_FTRS_POWER9_DD2_1 | CPU_FTRS_POWER9_DD2_2 | CPU_FTRS_POWER10 | \
+ CPU_FTR_DAWR1)
#else
#define CPU_FTRS_POSSIBLE \
(CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \
CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \
CPU_FTRS_POWER8 | CPU_FTRS_CELL | CPU_FTRS_PA6T | \
CPU_FTR_VSX_COMP | CPU_FTR_ALTIVEC_COMP | CPU_FTRS_POWER9 | \
- CPU_FTRS_POWER9_DD2_1 | CPU_FTRS_POWER9_DD2_2 | CPU_FTRS_POWER10)
+ CPU_FTRS_POWER9_DD2_1 | CPU_FTRS_POWER9_DD2_2 | CPU_FTRS_POWER10 | \
+ CPU_FTR_DAWR1)
#endif /* CONFIG_CPU_LITTLE_ENDIAN */
#endif
#else
diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c
index a0edeb391e3e..be694567cebd 100644
--- a/arch/powerpc/kernel/dt_cpu_ftrs.c
+++ b/arch/powerpc/kernel/dt_cpu_ftrs.c
@@ -573,6 +573,12 @@ static int __init feat_enable_mma(struct dt_cpu_feature *f)
return 1;
}
+static int __init feat_enable_debug_facilities_v31(struct dt_cpu_feature *f)
+{
+ cur_cpu_spec->cpu_features |= CPU_FTR_DAWR1;
+ return 1;
+}
+
struct dt_cpu_feature_match {
const char *name;
int (*enable)(struct dt_cpu_feature *f);
@@ -648,6 +654,7 @@ static struct dt_cpu_feature_match __initdata
{"wait-v3", feat_enable, 0},
{"prefix-instructions", feat_enable, 0},
{"matrix-multiply-assist", feat_enable_mma, 0},
+ {"debug-facilities-v31", feat_enable_debug_facilities_v31, 0},
};
static bool __initdata using_dt_cpu_ftrs;
--
2.26.2
next prev parent reply other threads:[~2020-07-08 5:02 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-08 4:50 [PATCH v3 0/9] powerpc/watchpoint: Enable 2nd DAWR on baremetal and powervm Ravi Bangoria
2020-07-08 4:50 ` [PATCH v3 1/9] powerpc/watchpoint: Fix 512 byte boundary limit Ravi Bangoria
2020-07-08 7:44 ` Jordan Niethe
2020-07-08 7:52 ` Christophe Leroy
2020-07-15 1:01 ` Jordan Niethe
2020-07-08 4:50 ` [PATCH v3 2/9] powerpc/watchpoint: Fix DAWR exception constraint Ravi Bangoria
2020-07-15 2:19 ` Jordan Niethe
2020-07-15 4:08 ` Ravi Bangoria
2020-07-08 4:50 ` [PATCH v3 3/9] powerpc/watchpoint: Enable watchpoint functionality on power10 guest Ravi Bangoria
2020-07-08 4:50 ` Ravi Bangoria [this message]
2020-07-08 4:50 ` [PATCH v3 5/9] powerpc/watchpoint: Set CPU_FTR_DAWR1 based on pa-features bit Ravi Bangoria
2020-07-08 4:50 ` [PATCH v3 6/9] powerpc/watchpoint: Rename current H_SET_MODE DAWR macro Ravi Bangoria
2020-07-08 4:50 ` [PATCH v3 7/9] powerpc/watchpoint: Guest support for 2nd DAWR hcall Ravi Bangoria
2020-07-08 4:50 ` [PATCH v3 8/9] powerpc/watchpoint: Return available watchpoints dynamically Ravi Bangoria
2020-07-08 4:50 ` [PATCH v3 9/9] powerpc/watchpoint: Remove 512 byte boundary Ravi Bangoria
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