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From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, mike.leach@linaro.org,
	coresight@lists.linaro.org
Subject: Re: [RFC PATCH 07/14] coresight: etm4x: Always read the registers on the host CPU
Date: Thu, 30 Jul 2020 13:56:38 -0600	[thread overview]
Message-ID: <20200730195638.GD3155687@xps15> (raw)
In-Reply-To: <20200722172040.1299289-8-suzuki.poulose@arm.com>

On Wed, Jul 22, 2020 at 06:20:33PM +0100, Suzuki K Poulose wrote:
> As we are about to add support for sysreg access to ETM4.4+ components,
> make sure that we read the registers only on the host CPU.
> 
> Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
> Cc: Mike Leach <mike.leach@linaro.org>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
> ---

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

>  .../coresight/coresight-etm4x-sysfs.c         | 23 ++++++++-----------
>  1 file changed, 10 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
> index b673e738bc9a..90c75ba31a0c 100644
> --- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
> +++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
> @@ -2341,23 +2341,20 @@ static u32 etmv4_cross_read(const struct device *dev, u32 offset)
>  	return reg.data;
>  }
>  
> -#define coresight_etm4x_reg(name, offset)			\
> -	coresight_simple_reg32(struct etmv4_drvdata, name, offset)
> -
>  #define coresight_etm4x_cross_read(name, offset)			\
>  	coresight_simple_func(struct etmv4_drvdata, etmv4_cross_read,	\
>  			      name, offset)
>  
> -coresight_etm4x_reg(trcpdcr, TRCPDCR);
> -coresight_etm4x_reg(trcpdsr, TRCPDSR);
> -coresight_etm4x_reg(trclsr, TRCLSR);
> -coresight_etm4x_reg(trcauthstatus, TRCAUTHSTATUS);
> -coresight_etm4x_reg(trcdevid, TRCDEVID);
> -coresight_etm4x_reg(trcdevtype, TRCDEVTYPE);
> -coresight_etm4x_reg(trcpidr0, TRCPIDR0);
> -coresight_etm4x_reg(trcpidr1, TRCPIDR1);
> -coresight_etm4x_reg(trcpidr2, TRCPIDR2);
> -coresight_etm4x_reg(trcpidr3, TRCPIDR3);
> +coresight_etm4x_cross_read(trcpdcr, TRCPDCR);
> +coresight_etm4x_cross_read(trcpdsr, TRCPDSR);
> +coresight_etm4x_cross_read(trclsr, TRCLSR);
> +coresight_etm4x_cross_read(trcauthstatus, TRCAUTHSTATUS);
> +coresight_etm4x_cross_read(trcdevid, TRCDEVID);
> +coresight_etm4x_cross_read(trcdevtype, TRCDEVTYPE);
> +coresight_etm4x_cross_read(trcpidr0, TRCPIDR0);
> +coresight_etm4x_cross_read(trcpidr1, TRCPIDR1);
> +coresight_etm4x_cross_read(trcpidr2, TRCPIDR2);
> +coresight_etm4x_cross_read(trcpidr3, TRCPIDR3);
>  coresight_etm4x_cross_read(trcoslsr, TRCOSLSR);
>  coresight_etm4x_cross_read(trcconfig, TRCCONFIGR);
>  coresight_etm4x_cross_read(trctraceid, TRCTRACEIDR);
> -- 
> 2.24.1
> 

WARNING: multiple messages have this Message-ID (diff)
From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, mike.leach@linaro.org
Subject: Re: [RFC PATCH 07/14] coresight: etm4x: Always read the registers on the host CPU
Date: Thu, 30 Jul 2020 13:56:38 -0600	[thread overview]
Message-ID: <20200730195638.GD3155687@xps15> (raw)
In-Reply-To: <20200722172040.1299289-8-suzuki.poulose@arm.com>

On Wed, Jul 22, 2020 at 06:20:33PM +0100, Suzuki K Poulose wrote:
> As we are about to add support for sysreg access to ETM4.4+ components,
> make sure that we read the registers only on the host CPU.
> 
> Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
> Cc: Mike Leach <mike.leach@linaro.org>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
> ---

Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

>  .../coresight/coresight-etm4x-sysfs.c         | 23 ++++++++-----------
>  1 file changed, 10 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
> index b673e738bc9a..90c75ba31a0c 100644
> --- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
> +++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
> @@ -2341,23 +2341,20 @@ static u32 etmv4_cross_read(const struct device *dev, u32 offset)
>  	return reg.data;
>  }
>  
> -#define coresight_etm4x_reg(name, offset)			\
> -	coresight_simple_reg32(struct etmv4_drvdata, name, offset)
> -
>  #define coresight_etm4x_cross_read(name, offset)			\
>  	coresight_simple_func(struct etmv4_drvdata, etmv4_cross_read,	\
>  			      name, offset)
>  
> -coresight_etm4x_reg(trcpdcr, TRCPDCR);
> -coresight_etm4x_reg(trcpdsr, TRCPDSR);
> -coresight_etm4x_reg(trclsr, TRCLSR);
> -coresight_etm4x_reg(trcauthstatus, TRCAUTHSTATUS);
> -coresight_etm4x_reg(trcdevid, TRCDEVID);
> -coresight_etm4x_reg(trcdevtype, TRCDEVTYPE);
> -coresight_etm4x_reg(trcpidr0, TRCPIDR0);
> -coresight_etm4x_reg(trcpidr1, TRCPIDR1);
> -coresight_etm4x_reg(trcpidr2, TRCPIDR2);
> -coresight_etm4x_reg(trcpidr3, TRCPIDR3);
> +coresight_etm4x_cross_read(trcpdcr, TRCPDCR);
> +coresight_etm4x_cross_read(trcpdsr, TRCPDSR);
> +coresight_etm4x_cross_read(trclsr, TRCLSR);
> +coresight_etm4x_cross_read(trcauthstatus, TRCAUTHSTATUS);
> +coresight_etm4x_cross_read(trcdevid, TRCDEVID);
> +coresight_etm4x_cross_read(trcdevtype, TRCDEVTYPE);
> +coresight_etm4x_cross_read(trcpidr0, TRCPIDR0);
> +coresight_etm4x_cross_read(trcpidr1, TRCPIDR1);
> +coresight_etm4x_cross_read(trcpidr2, TRCPIDR2);
> +coresight_etm4x_cross_read(trcpidr3, TRCPIDR3);
>  coresight_etm4x_cross_read(trcoslsr, TRCOSLSR);
>  coresight_etm4x_cross_read(trcconfig, TRCCONFIGR);
>  coresight_etm4x_cross_read(trctraceid, TRCTRACEIDR);
> -- 
> 2.24.1
> 

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  reply	other threads:[~2020-07-30 19:56 UTC|newest]

Thread overview: 75+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-22 17:20 [RFC PATCH 00/14] coresight: Support for ETMv4.4 system instructions Suzuki K Poulose
2020-07-22 17:20 ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 01/14] coresight: etm4x: Skip save/restore before device registration Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-29 18:01   ` Mathieu Poirier
2020-07-29 18:01     ` Mathieu Poirier
2020-07-30 14:45     ` Suzuki K Poulose
2020-07-30 14:45       ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 02/14] coresight: Introduce device access abstraction Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-24  4:40   ` kernel test robot
2020-07-29 19:56   ` Mathieu Poirier
2020-07-29 19:56     ` Mathieu Poirier
2020-07-30 14:58     ` Suzuki K Poulose
2020-07-30 14:58       ` Suzuki K Poulose
2020-07-29 20:56   ` kernel test robot
2020-07-22 17:20 ` [RFC PATCH 03/14] coresight: tpiu: Use coresight " Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-29 21:01   ` Mathieu Poirier
2020-07-29 21:01     ` Mathieu Poirier
2020-07-31 11:36     ` Suzuki K Poulose
2020-07-31 11:36       ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 04/14] coresight: etm4x: Free up argument of etm4_init_arch_data Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-30 17:31   ` Mathieu Poirier
2020-07-30 17:31     ` Mathieu Poirier
2020-07-31  9:39     ` Suzuki K Poulose
2020-07-31  9:39       ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 05/14] coresight: Convert coresight_timeout to use access abstraction Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-30 18:00   ` Mathieu Poirier
2020-07-30 18:00     ` Mathieu Poirier
2020-07-22 17:20 ` [RFC PATCH 06/14] coresight: Convert claim and lock operations to use access wrappers Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-27  6:04   ` kernel test robot
2020-07-27 17:56   ` kernel test robot
2020-07-28  9:47     ` Suzuki K Poulose
2020-07-30 19:54   ` Mathieu Poirier
2020-07-30 19:54     ` Mathieu Poirier
2020-07-31  9:46     ` Suzuki K Poulose
2020-07-31  9:46       ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 07/14] coresight: etm4x: Always read the registers on the host CPU Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-30 19:56   ` Mathieu Poirier [this message]
2020-07-30 19:56     ` Mathieu Poirier
2020-07-22 17:20 ` [RFC PATCH 08/14] coresight: etm4x: Convert all register accesses Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-30 20:20   ` Mathieu Poirier
2020-07-30 20:20     ` Mathieu Poirier
2020-07-31  9:49     ` Suzuki K Poulose
2020-07-31  9:49       ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 09/14] coresight: etm4x: Add sysreg access helpers Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-30 21:41   ` Mathieu Poirier
2020-07-30 21:41     ` Mathieu Poirier
2020-07-31  9:51     ` Suzuki K Poulose
2020-07-31  9:51       ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 10/14] coresight: etm4x: Define DEVARCH register fields Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 11/14] coresight: etm4x: Detect system register access support Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 12/14] coresight: etm4x: Refactor probing routine Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 13/14] coresight: etm4x: Add support for sysreg only devices Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-22 17:20 ` [RFC PATCH 14/14] dts: bindings: coresight: ETMv4.4 system register access only units Suzuki K Poulose
2020-07-22 17:20   ` Suzuki K Poulose
2020-07-23 17:27   ` Rob Herring
2020-07-23 17:27     ` Rob Herring
2020-07-29 17:20   ` Mathieu Poirier
2020-07-29 17:20     ` Mathieu Poirier
2020-07-30 16:38     ` Suzuki K Poulose
2020-07-30 16:38       ` Suzuki K Poulose
2020-08-10 20:14       ` Mathieu Poirier
2020-08-10 20:14         ` Mathieu Poirier

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