linux-kernel - Re: [PATCH V3 09/14] arm64: Add TRBE definitions

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Date:   Thu, 28 Jan 2021 09:31:34 +0000
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     Anshuman Khandual <anshuman.khandual@....com>,
        linux-arm-kernel@...ts.infradead.org, coresight@...ts.linaro.org
Cc:     mathieu.poirier@...aro.org, mike.leach@...aro.org,
        lcherian@...vell.com, linux-kernel@...r.kernel.org,
        Will Deacon <will@...nel.org>,
        Catalin Marinas <Catalin.Marinas@....com>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH V3 09/14] arm64: Add TRBE definitions

On 1/27/21 8:55 AM, Anshuman Khandual wrote:
> This adds TRBE related registers and corresponding feature macros.
> 
> Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
> Cc: Mike Leach <mike.leach@...aro.org>
> Cc: Suzuki K Poulose <suzuki.poulose@....com>

Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Will Deacon <will@...nel.org>

> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>

Reviewed-by: Suzuki K Poulose <suzuki.poulose@....com>

> ---
> Changes in V3:
> 
> - ID_AA64DFR0_TRBE_SHIFT has been moved here from the TRBE driver
> - Changed TRBLIMITR_TRIG_MODE_SHIFT as 3
> 
>   arch/arm64/include/asm/sysreg.h | 50 +++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 50 insertions(+)
> 
> diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
> index 4acff97..85ae4db 100644
> --- a/arch/arm64/include/asm/sysreg.h
> +++ b/arch/arm64/include/asm/sysreg.h
> @@ -329,6 +329,55 @@
>   
>   /*** 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)
>   
> @@ -831,6 +880,7 @@
>   #define ID_AA64MMFR2_CNP_SHIFT		0
>   
>   /* id_aa64dfr0 */
> +#define ID_AA64DFR0_TRBE_SHIFT		44
>   #define ID_AA64DFR0_TRACE_FILT_SHIFT	40
>   #define ID_AA64DFR0_DOUBLELOCK_SHIFT	36
>   #define ID_AA64DFR0_PMSVER_SHIFT	32
>