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Message-Id: <20230531055524.16562-1-anshuman.khandual@arm.com>
Date: Wed, 31 May 2023 11:25:24 +0530
From: Anshuman Khandual <anshuman.khandual@....com>
To: linux-arm-kernel@...ts.infradead.org
Cc: Anshuman Khandual <anshuman.khandual@....com>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>, Mark Brown <broonie@...nel.org>,
Suzuki K Poulose <suzuki.poulose@....com>,
Mike Leach <mike.leach@...aro.org>,
Marc Zyngier <maz@...nel.org>, linux-kernel@...r.kernel.org,
kvmarm@...ts.linux.dev, coresight@...ts.linaro.org
Subject: [PATCH] arm64/sysreg: Convert TRBE registers to automatic generation
This converts all TRBE related registers to automatic generation and update
the driver as required. This does not cause any functional change.
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Will Deacon <will@...nel.org>
Cc: Mark Brown <broonie@...nel.org>
Cc: Suzuki K Poulose <suzuki.poulose@....com>
Cc: Mike Leach <mike.leach@...aro.org>
Cc: Marc Zyngier <maz@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Cc: kvmarm@...ts.linux.dev
Cc: coresight@...ts.linaro.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
This applies on v6.4-rc4.
arch/arm64/include/asm/el2_setup.h | 2 +-
arch/arm64/include/asm/sysreg.h | 49 ----------------
arch/arm64/kvm/debug.c | 2 +-
arch/arm64/kvm/hyp/nvhe/debug-sr.c | 2 +-
arch/arm64/tools/sysreg | 59 ++++++++++++++++++++
drivers/hwtracing/coresight/coresight-trbe.c | 33 +++++------
drivers/hwtracing/coresight/coresight-trbe.h | 38 +++++--------
7 files changed, 94 insertions(+), 91 deletions(-)
diff --git a/arch/arm64/include/asm/el2_setup.h b/arch/arm64/include/asm/el2_setup.h
index 037724b19c5c..80e0460ca8bb 100644
--- a/arch/arm64/include/asm/el2_setup.h
+++ b/arch/arm64/include/asm/el2_setup.h
@@ -69,7 +69,7 @@
cbz x0, .Lskip_trace_\@ // Skip if TraceBuffer is not present
mrs_s x0, SYS_TRBIDR_EL1
- and x0, x0, TRBIDR_PROG
+ and x0, x0, TRBIDR_EL1_PROG
cbnz x0, .Lskip_trace_\@ // If TRBE is available at EL2
mov x0, #(MDCR_EL2_E2TB_MASK << MDCR_EL2_E2TB_SHIFT)
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index e72d9aaab6b1..51d97ea89972 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -235,55 +235,6 @@
/*** End of Statistical Profiling Extension ***/
-/*
- * TRBE Registers
- */
-#define SYS_TRBLIMITR_EL1 sys_reg(3, 0, 9, 11, 0)
-#define SYS_TRBPTR_EL1 sys_reg(3, 0, 9, 11, 1)
-#define SYS_TRBBASER_EL1 sys_reg(3, 0, 9, 11, 2)
-#define SYS_TRBSR_EL1 sys_reg(3, 0, 9, 11, 3)
-#define SYS_TRBMAR_EL1 sys_reg(3, 0, 9, 11, 4)
-#define SYS_TRBTRG_EL1 sys_reg(3, 0, 9, 11, 6)
-#define SYS_TRBIDR_EL1 sys_reg(3, 0, 9, 11, 7)
-
-#define TRBLIMITR_LIMIT_MASK GENMASK_ULL(51, 0)
-#define TRBLIMITR_LIMIT_SHIFT 12
-#define TRBLIMITR_NVM BIT(5)
-#define TRBLIMITR_TRIG_MODE_MASK GENMASK(1, 0)
-#define TRBLIMITR_TRIG_MODE_SHIFT 3
-#define TRBLIMITR_FILL_MODE_MASK GENMASK(1, 0)
-#define TRBLIMITR_FILL_MODE_SHIFT 1
-#define TRBLIMITR_ENABLE BIT(0)
-#define TRBPTR_PTR_MASK GENMASK_ULL(63, 0)
-#define TRBPTR_PTR_SHIFT 0
-#define TRBBASER_BASE_MASK GENMASK_ULL(51, 0)
-#define TRBBASER_BASE_SHIFT 12
-#define TRBSR_EC_MASK GENMASK(5, 0)
-#define TRBSR_EC_SHIFT 26
-#define TRBSR_IRQ BIT(22)
-#define TRBSR_TRG BIT(21)
-#define TRBSR_WRAP BIT(20)
-#define TRBSR_ABORT BIT(18)
-#define TRBSR_STOP BIT(17)
-#define TRBSR_MSS_MASK GENMASK(15, 0)
-#define TRBSR_MSS_SHIFT 0
-#define TRBSR_BSC_MASK GENMASK(5, 0)
-#define TRBSR_BSC_SHIFT 0
-#define TRBSR_FSC_MASK GENMASK(5, 0)
-#define TRBSR_FSC_SHIFT 0
-#define TRBMAR_SHARE_MASK GENMASK(1, 0)
-#define TRBMAR_SHARE_SHIFT 8
-#define TRBMAR_OUTER_MASK GENMASK(3, 0)
-#define TRBMAR_OUTER_SHIFT 4
-#define TRBMAR_INNER_MASK GENMASK(3, 0)
-#define TRBMAR_INNER_SHIFT 0
-#define TRBTRG_TRG_MASK GENMASK(31, 0)
-#define TRBTRG_TRG_SHIFT 0
-#define TRBIDR_FLAG BIT(5)
-#define TRBIDR_PROG BIT(4)
-#define TRBIDR_ALIGN_MASK GENMASK(3, 0)
-#define TRBIDR_ALIGN_SHIFT 0
-
#define SYS_PMINTENSET_EL1 sys_reg(3, 0, 9, 14, 1)
#define SYS_PMINTENCLR_EL1 sys_reg(3, 0, 9, 14, 2)
diff --git a/arch/arm64/kvm/debug.c b/arch/arm64/kvm/debug.c
index 55f80fb93925..e09b9607ed52 100644
--- a/arch/arm64/kvm/debug.c
+++ b/arch/arm64/kvm/debug.c
@@ -333,7 +333,7 @@ void kvm_arch_vcpu_load_debug_state_flags(struct kvm_vcpu *vcpu)
/* Check if we have TRBE implemented and available at the host */
if (cpuid_feature_extract_unsigned_field(dfr0, ID_AA64DFR0_EL1_TraceBuffer_SHIFT) &&
- !(read_sysreg_s(SYS_TRBIDR_EL1) & TRBIDR_PROG))
+ !(read_sysreg_s(SYS_TRBIDR_EL1) & TRBIDR_EL1_PROG))
vcpu_set_flag(vcpu, DEBUG_STATE_SAVE_TRBE);
}
diff --git a/arch/arm64/kvm/hyp/nvhe/debug-sr.c b/arch/arm64/kvm/hyp/nvhe/debug-sr.c
index d756b939f296..9b08f8b498fe 100644
--- a/arch/arm64/kvm/hyp/nvhe/debug-sr.c
+++ b/arch/arm64/kvm/hyp/nvhe/debug-sr.c
@@ -56,7 +56,7 @@ static void __debug_save_trace(u64 *trfcr_el1)
*trfcr_el1 = 0;
/* Check if the TRBE is enabled */
- if (!(read_sysreg_s(SYS_TRBLIMITR_EL1) & TRBLIMITR_ENABLE))
+ if (!(read_sysreg_s(SYS_TRBLIMITR_EL1) & TRBLIMITR_EL1_ENABLE))
return;
/*
* Prohibit trace generation while we are in guest.
diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index c9a0d1fa3209..2396fa550251 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -2200,3 +2200,62 @@ Sysreg ICC_NMIAR1_EL1 3 0 12 9 5
Res0 63:24
Field 23:0 INTID
EndSysreg
+
+Sysreg TRBLIMITR_EL1 3 0 9 11 0
+Field 63:12 LIMIT
+Res0 11:6
+Field 5 NVM
+Enum 4:3 TRIG_MODE
+ 0b00 STOP
+ 0b01 IRQ
+ 0b11 IGNR
+EndEnum
+Enum 2:1 FILL_MODE
+ 0b00 FILL
+ 0b01 WRAP
+ 0b11 CBUF
+EndEnum
+Field 0 ENABLE
+EndSysreg
+
+Sysreg TRBPTR_EL1 3 0 9 11 1
+Field 63:0 PTR
+EndSysreg
+
+Sysreg TRBBASER_EL1 3 0 9 11 2
+Field 63:12 BASE
+Res0 11:0
+EndSysreg
+
+Sysreg TRBSR_EL1 3 0 9 11 3
+Res0 63:32
+Field 31:26 EC
+Res0 25:23
+Field 22 IRQ
+Field 21 TRG
+Field 20 WRAP
+Res0 19
+Field 18 ABORT
+Field 17 STOP
+Res0 16
+Res0 15:6
+Field 5:0 BSC
+EndSysreg
+
+Sysreg TRBMAR_EL1 3 0 9 11 4
+Res0 63:10
+Field 9:8 SH
+Field 7:0 ATTR
+EndSysreg
+
+Sysreg TRBTRG_EL1 3 0 9 11 6
+Res0 63:32
+Field 31:0 TRG
+EndSysreg
+
+Sysreg TRBIDR_EL1 3 0 9 11 7
+Res0 63:6
+Field 5 FLAG
+Field 4 PROG
+Field 3:0 ALIGN
+EndSysreg
diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c
index 1fc4fd79a1c6..f8f6adb5b0f5 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.c
+++ b/drivers/hwtracing/coresight/coresight-trbe.c
@@ -218,7 +218,7 @@ static inline void set_trbe_enabled(struct trbe_cpudata *cpudata, u64 trblimitr)
* Enable the TRBE without clearing LIMITPTR which
* might be required for fetching the buffer limits.
*/
- trblimitr |= TRBLIMITR_ENABLE;
+ trblimitr |= TRBLIMITR_EL1_ENABLE;
write_sysreg_s(trblimitr, SYS_TRBLIMITR_EL1);
/* Synchronize the TRBE enable event */
@@ -236,7 +236,7 @@ static inline void set_trbe_disabled(struct trbe_cpudata *cpudata)
* Disable the TRBE without clearing LIMITPTR which
* might be required for fetching the buffer limits.
*/
- trblimitr &= ~TRBLIMITR_ENABLE;
+ trblimitr &= ~TRBLIMITR_EL1_ENABLE;
write_sysreg_s(trblimitr, SYS_TRBLIMITR_EL1);
if (trbe_needs_drain_after_disable(cpudata))
@@ -582,12 +582,12 @@ static void clr_trbe_status(void)
u64 trbsr = read_sysreg_s(SYS_TRBSR_EL1);
WARN_ON(is_trbe_enabled());
- trbsr &= ~TRBSR_IRQ;
- trbsr &= ~TRBSR_TRG;
- trbsr &= ~TRBSR_WRAP;
- trbsr &= ~(TRBSR_EC_MASK << TRBSR_EC_SHIFT);
- trbsr &= ~(TRBSR_BSC_MASK << TRBSR_BSC_SHIFT);
- trbsr &= ~TRBSR_STOP;
+ trbsr &= ~TRBSR_EL1_IRQ;
+ trbsr &= ~TRBSR_EL1_TRG;
+ trbsr &= ~TRBSR_EL1_WRAP;
+ trbsr &= ~TRBSR_EL1_EC_MASK;
+ trbsr &= ~TRBSR_EL1_BSC_MASK;
+ trbsr &= ~TRBSR_EL1_STOP;
write_sysreg_s(trbsr, SYS_TRBSR_EL1);
}
@@ -596,13 +596,13 @@ static void set_trbe_limit_pointer_enabled(struct trbe_buf *buf)
u64 trblimitr = read_sysreg_s(SYS_TRBLIMITR_EL1);
unsigned long addr = buf->trbe_limit;
- WARN_ON(!IS_ALIGNED(addr, (1UL << TRBLIMITR_LIMIT_SHIFT)));
+ WARN_ON(!IS_ALIGNED(addr, (1UL << TRBLIMITR_EL1_LIMIT_SHIFT)));
WARN_ON(!IS_ALIGNED(addr, PAGE_SIZE));
- trblimitr &= ~TRBLIMITR_NVM;
- trblimitr &= ~(TRBLIMITR_FILL_MODE_MASK << TRBLIMITR_FILL_MODE_SHIFT);
- trblimitr &= ~(TRBLIMITR_TRIG_MODE_MASK << TRBLIMITR_TRIG_MODE_SHIFT);
- trblimitr &= ~(TRBLIMITR_LIMIT_MASK << TRBLIMITR_LIMIT_SHIFT);
+ trblimitr &= ~TRBLIMITR_EL1_NVM;
+ trblimitr &= ~TRBLIMITR_EL1_FILL_MODE_MASK;
+ trblimitr &= ~TRBLIMITR_EL1_TRIG_MODE_MASK;
+ trblimitr &= ~TRBLIMITR_EL1_LIMIT_MASK;
/*
* Fill trace buffer mode is used here while configuring the
@@ -613,14 +613,15 @@ static void set_trbe_limit_pointer_enabled(struct trbe_buf *buf)
* trace data in the interrupt handler, before reconfiguring
* the TRBE.
*/
- trblimitr |= (TRBE_FILL_MODE_FILL & TRBLIMITR_FILL_MODE_MASK) << TRBLIMITR_FILL_MODE_SHIFT;
+ trblimitr |= (TRBLIMITR_EL1_FILL_MODE_FILL << TRBLIMITR_EL1_FILL_MODE_SHIFT) &
+ TRBLIMITR_EL1_FILL_MODE_MASK;
/*
* Trigger mode is not used here while configuring the TRBE for
* the trace capture. Hence just keep this in the ignore mode.
*/
- trblimitr |= (TRBE_TRIG_MODE_IGNORE & TRBLIMITR_TRIG_MODE_MASK) <<
- TRBLIMITR_TRIG_MODE_SHIFT;
+ trblimitr |= (TRBLIMITR_EL1_TRIG_MODE_IGNR << TRBLIMITR_EL1_TRIG_MODE_SHIFT) &
+ TRBLIMITR_EL1_TRIG_MODE_MASK;
trblimitr |= (addr & PAGE_MASK);
set_trbe_enabled(buf->cpudata, trblimitr);
}
diff --git a/drivers/hwtracing/coresight/coresight-trbe.h b/drivers/hwtracing/coresight/coresight-trbe.h
index 98ff1b17ad07..be0ef7c9b4e6 100644
--- a/drivers/hwtracing/coresight/coresight-trbe.h
+++ b/drivers/hwtracing/coresight/coresight-trbe.h
@@ -30,7 +30,7 @@ static inline bool is_trbe_enabled(void)
{
u64 trblimitr = read_sysreg_s(SYS_TRBLIMITR_EL1);
- return trblimitr & TRBLIMITR_ENABLE;
+ return trblimitr & TRBLIMITR_EL1_ENABLE;
}
#define TRBE_EC_OTHERS 0
@@ -39,7 +39,7 @@ static inline bool is_trbe_enabled(void)
static inline int get_trbe_ec(u64 trbsr)
{
- return (trbsr >> TRBSR_EC_SHIFT) & TRBSR_EC_MASK;
+ return (trbsr & TRBSR_EL1_EC_MASK) >> TRBSR_EL1_EC_SHIFT;
}
#define TRBE_BSC_NOT_STOPPED 0
@@ -48,63 +48,55 @@ static inline int get_trbe_ec(u64 trbsr)
static inline int get_trbe_bsc(u64 trbsr)
{
- return (trbsr >> TRBSR_BSC_SHIFT) & TRBSR_BSC_MASK;
+ return (trbsr & TRBSR_EL1_BSC_MASK) >> TRBSR_EL1_BSC_SHIFT;
}
static inline void clr_trbe_irq(void)
{
u64 trbsr = read_sysreg_s(SYS_TRBSR_EL1);
- trbsr &= ~TRBSR_IRQ;
+ trbsr &= ~TRBSR_EL1_IRQ;
write_sysreg_s(trbsr, SYS_TRBSR_EL1);
}
static inline bool is_trbe_irq(u64 trbsr)
{
- return trbsr & TRBSR_IRQ;
+ return trbsr & TRBSR_EL1_IRQ;
}
static inline bool is_trbe_trg(u64 trbsr)
{
- return trbsr & TRBSR_TRG;
+ return trbsr & TRBSR_EL1_TRG;
}
static inline bool is_trbe_wrap(u64 trbsr)
{
- return trbsr & TRBSR_WRAP;
+ return trbsr & TRBSR_EL1_WRAP;
}
static inline bool is_trbe_abort(u64 trbsr)
{
- return trbsr & TRBSR_ABORT;
+ return trbsr & TRBSR_EL1_ABORT;
}
static inline bool is_trbe_running(u64 trbsr)
{
- return !(trbsr & TRBSR_STOP);
+ return !(trbsr & TRBSR_EL1_STOP);
}
-#define TRBE_TRIG_MODE_STOP 0
-#define TRBE_TRIG_MODE_IRQ 1
-#define TRBE_TRIG_MODE_IGNORE 3
-
-#define TRBE_FILL_MODE_FILL 0
-#define TRBE_FILL_MODE_WRAP 1
-#define TRBE_FILL_MODE_CIRCULAR_BUFFER 3
-
static inline bool get_trbe_flag_update(u64 trbidr)
{
- return trbidr & TRBIDR_FLAG;
+ return trbidr & TRBIDR_EL1_FLAG;
}
static inline bool is_trbe_programmable(u64 trbidr)
{
- return !(trbidr & TRBIDR_PROG);
+ return !(trbidr & TRBIDR_EL1_PROG);
}
static inline int get_trbe_address_align(u64 trbidr)
{
- return (trbidr >> TRBIDR_ALIGN_SHIFT) & TRBIDR_ALIGN_MASK;
+ return (trbidr & TRBIDR_EL1_ALIGN_MASK) >> TRBIDR_EL1_ALIGN_SHIFT;
}
static inline unsigned long get_trbe_write_pointer(void)
@@ -121,7 +113,7 @@ static inline void set_trbe_write_pointer(unsigned long addr)
static inline unsigned long get_trbe_limit_pointer(void)
{
u64 trblimitr = read_sysreg_s(SYS_TRBLIMITR_EL1);
- unsigned long addr = trblimitr & (TRBLIMITR_LIMIT_MASK << TRBLIMITR_LIMIT_SHIFT);
+ unsigned long addr = trblimitr & TRBLIMITR_EL1_LIMIT_MASK;
WARN_ON(!IS_ALIGNED(addr, PAGE_SIZE));
return addr;
@@ -130,7 +122,7 @@ static inline unsigned long get_trbe_limit_pointer(void)
static inline unsigned long get_trbe_base_pointer(void)
{
u64 trbbaser = read_sysreg_s(SYS_TRBBASER_EL1);
- unsigned long addr = trbbaser & (TRBBASER_BASE_MASK << TRBBASER_BASE_SHIFT);
+ unsigned long addr = trbbaser & TRBBASER_EL1_BASE_MASK;
WARN_ON(!IS_ALIGNED(addr, PAGE_SIZE));
return addr;
@@ -139,7 +131,7 @@ static inline unsigned long get_trbe_base_pointer(void)
static inline void set_trbe_base_pointer(unsigned long addr)
{
WARN_ON(is_trbe_enabled());
- WARN_ON(!IS_ALIGNED(addr, (1UL << TRBBASER_BASE_SHIFT)));
+ WARN_ON(!IS_ALIGNED(addr, (1UL << TRBBASER_EL1_BASE_SHIFT)));
WARN_ON(!IS_ALIGNED(addr, PAGE_SIZE));
write_sysreg_s(addr, SYS_TRBBASER_EL1);
}
--
2.25.1
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