linux-kernel - Re: [PATCH] arm64/sysreg: Convert HW[RW]TR

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Message-ID: <20230307111509.GA19068@e124191.cambridge.arm.com>
Date:   Tue, 7 Mar 2023 11:15:09 +0000
From:   Joey Gouly <joey.gouly@....com>
To:     Mark Brown <broonie@...nel.org>
CC:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <nd@....com>
Subject: Re: [PATCH] arm64/sysreg: Convert HW[RW]TR_EL2 to automatic
 generation

Hi Mark,

On Mon, Mar 06, 2023 at 08:46:18PM +0000, Mark Brown wrote:
> Convert the fine grained traps read and write control registers to
> automatic generation as per DDI0601 2022-12. No functional changes.
> 
> Signed-off-by: Mark Brown <broonie@...nel.org>
> ---
>  arch/arm64/include/asm/sysreg.h |  8 -----
>  arch/arm64/tools/sysreg         | 75 +++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 75 insertions(+), 8 deletions(-)
> 
> diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
> index 9e3ecba3c4e6..e5ca9ece1606 100644
> --- a/arch/arm64/include/asm/sysreg.h
> +++ b/arch/arm64/include/asm/sysreg.h
> @@ -419,8 +419,6 @@
>  #define SYS_MDCR_EL2			sys_reg(3, 4, 1, 1, 1)
>  #define SYS_CPTR_EL2			sys_reg(3, 4, 1, 1, 2)
>  #define SYS_HSTR_EL2			sys_reg(3, 4, 1, 1, 3)
> -#define SYS_HFGRTR_EL2			sys_reg(3, 4, 1, 1, 4)
> -#define SYS_HFGWTR_EL2			sys_reg(3, 4, 1, 1, 5)
>  #define SYS_HFGITR_EL2			sys_reg(3, 4, 1, 1, 6)
>  #define SYS_HACR_EL2			sys_reg(3, 4, 1, 1, 7)
>  
> @@ -758,12 +756,6 @@
>  #define ICH_VTR_TDS_SHIFT	19
>  #define ICH_VTR_TDS_MASK	(1 << ICH_VTR_TDS_SHIFT)
>  
> -/* HFG[WR]TR_EL2 bit definitions */
> -#define HFGxTR_EL2_nTPIDR2_EL0_SHIFT	55
> -#define HFGxTR_EL2_nTPIDR2_EL0_MASK	BIT_MASK(HFGxTR_EL2_nTPIDR2_EL0_SHIFT)
> -#define HFGxTR_EL2_nSMPRI_EL1_SHIFT	54
> -#define HFGxTR_EL2_nSMPRI_EL1_MASK	BIT_MASK(HFGxTR_EL2_nSMPRI_EL1_SHIFT)
> -
>  #define ARM64_FEATURE_FIELD_BITS	4
>  
>  /* Defined for compatibility only, do not add new users. */
> diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
> index dd5a9c7e310f..cbf8c7ed633f 100644
> --- a/arch/arm64/tools/sysreg
> +++ b/arch/arm64/tools/sysreg
> @@ -1866,6 +1866,81 @@ Field	1	ZA
>  Field	0	SM
>  EndSysreg
>  
> +SysregFields	HFGxTR_EL2
> +Field	63	nAMIAIR2_EL1
> +Field	62	nMAIR2_EL1
> +Field	61	nS2POR_EL1
> +Field	60	nPOR_EL1
> +Field	59	nPOR_EL0
> +Field	58	nPIR_EL1
> +Field	57	nPIR_EL0

This should be `nPIRE0_EL1`.

> +Field	56	nRCWMASK_EL1
> +Field	55	nTPIDR2_EL0
> +Field	54	nSMPRI_EL1
> +Field	53	nGCS_EL1
> +Field	52	nGCS_EL0
> +Res0	51
> +Field	50	nACCDATA_EL1
> +Field	49	ERXADDR_EL1
> +Field	48	EXRPFGCDN_EL1
> +Field	47	EXPFGCTL_EL1
> +Field	46	EXPFGF_EL1
> +Field	45	ERXMISCn_EL1
> +Field	44	ERXSTATUS_EL1
> +Field	43	ERXCTLR_EL1
> +Field	42	ERXFR_EL1
> +Field	41	ERRSELR_EL1
> +Field	40	ERRIDR_EL1
> +Field	39	ICC_IGRPENn_EL1
> +Field	38	VBAR_EL1
> +Field	37	TTBR1_EL1
> +Field	36	TTBR0_EL1
> +Field	35	TPIDR_EL0
> +Field	34	TPIDRRO_EL0
> +Field	33	TPIDR_EL1
> +Field	32	TCR_EL1
> +Field	31	SCTXNUM_EL0
> +Field	30	SCTXNUM_EL1
> +Field	29	SCTLR_EL1
> +Field	28	REVIDR_EL1
> +Field	27	PAR_EL1
> +Field	26	MPIDR_EL1
> +Field	25	MIDR_EL1
> +Field	24	MAIR_EL1
> +Field	23	LORSA_EL1
> +Field	22	LORN_EL1
> +Field	21	LORID_EL1
> +Field	20	LOREA_EL1
> +Field	19	LORC_EL1
> +Field	18	ISR_EL1
> +Field	17	FAR_EL1
> +Field	16	ESR_EL1
> +Field	15	DCZID_EL0
> +Field	14	CTR_EL0
> +Field	13	CSSELR_EL1
> +Field	12	CPACR_EL1
> +Field	11	CONTEXTIDR_EL1
> +Field	10	CLIDR_EL1
> +Field	9	CCSIDR_EL1
> +Field	8	APIBKey
> +Field	7	APIAKey
> +Field	6	APGAKey
> +Field	5	APDBKey
> +Field	4	APDAKey
> +Field	3	AMAIR_EL1
> +Field	2	AIDR_EL1
> +Field	1	AFSR1_EL1
> +Field	0	AFSR0_EL1
> +EndSysregFields
> +
> +Sysreg HFGRTR_EL2	3	4	1	1	4
> +Fields	HFGxTR_EL2
> +EndSysreg
> +
> +Sysreg HFGWTR_EL2	3	4	1	1	5
> +Fields	HFGxTR_EL2
> +EndSysreg
> +
>  Sysreg	ZCR_EL2	3	4	1	2	0
>  Fields	ZCR_ELx
>  EndSysreg
> 

Thanks,
Joey