linux-kernel - Re: [PATCH 7/9] tools/arch/x86: intel_sdsi: Read more On Demand registers

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Message-ID: <b7a935ab-9ef9-2823-64ef-af5b91dfa4b9@redhat.com>
Date:   Thu, 17 Nov 2022 14:52:48 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     "David E. Box" <david.e.box@...ux.intel.com>, markgross@...nel.org,
        andriy.shevchenko@...ux.intel.com, srinivas.pandruvada@...el.com
Cc:     platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/9] tools/arch/x86: intel_sdsi: Read more On Demand
 registers

Hi,

On 11/1/22 20:10, David E. Box wrote:
> Add decoding of the following On Demand register fields:
> 
> 1. NVRAM content authorization error status
> 2. Enabled features: telemetry and attestation
> 3. Key provisioning status
> 4. NVRAM update limit
> 5. PCU_CR3_CAPID_CFG
> 
> Link: https://github.com/intel/intel-sdsi/blob/master/state-certificate-encoding.rst
> 
> Signed-off-by: David E. Box <david.e.box@...ux.intel.com>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans



> ---
>  tools/arch/x86/intel_sdsi/intel_sdsi.c | 50 +++++++++++++++++++++++---
>  1 file changed, 45 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/arch/x86/intel_sdsi/intel_sdsi.c b/tools/arch/x86/intel_sdsi/intel_sdsi.c
> index 3718bd0c05cb..01b5f9994e11 100644
> --- a/tools/arch/x86/intel_sdsi/intel_sdsi.c
> +++ b/tools/arch/x86/intel_sdsi/intel_sdsi.c
> @@ -44,10 +44,28 @@
>  #define __round_mask(x, y) ((__typeof__(x))((y) - 1))
>  #define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
>  
> +struct nvram_content_auth_err_sts {
> +	uint64_t reserved:3;
> +	uint64_t sdsi_content_auth_err:1;
> +	uint64_t reserved1:1;
> +	uint64_t sdsi_metering_auth_err:1;
> +	uint64_t reserved2:58;
> +};
> +
>  struct enabled_features {
>  	uint64_t reserved:3;
>  	uint64_t sdsi:1;
> -	uint64_t reserved1:60;
> +	uint64_t reserved1:8;
> +	uint64_t attestation:1;
> +	uint64_t reserved2:13;
> +	uint64_t metering:1;
> +	uint64_t reserved3:37;
> +};
> +
> +struct key_provision_status {
> +	uint64_t reserved:1;
> +	uint64_t license_key_provisioned:1;
> +	uint64_t reserved2:62;
>  };
>  
>  struct auth_fail_count {
> @@ -65,15 +83,23 @@ struct availability {
>  	uint64_t reserved2:10;
>  };
>  
> +struct nvram_update_limit {
> +	uint64_t reserved:12;
> +	uint64_t sdsi_50_pct:1;
> +	uint64_t sdsi_75_pct:1;
> +	uint64_t sdsi_90_pct:1;
> +	uint64_t reserved2:49;
> +};
> +
>  struct sdsi_regs {
>  	uint64_t ppin;
> -	uint64_t reserved;
> +	struct nvram_content_auth_err_sts auth_err_sts;
>  	struct enabled_features en_features;
> -	uint64_t reserved1;
> +	struct key_provision_status key_prov_sts;
>  	struct auth_fail_count auth_fail_count;
>  	struct availability prov_avail;
> -	uint64_t reserved2;
> -	uint64_t reserved3;
> +	struct nvram_update_limit limits;
> +	uint64_t pcu_cr3_capid_cfg;
>  	uint64_t socket_id;
>  };
>  
> @@ -205,8 +231,18 @@ static int sdsi_read_reg(struct sdsi_dev *s)
>  	printf("Socket information for device %s\n", s->dev_name);
>  	printf("\n");
>  	printf("PPIN:                           0x%lx\n", s->regs.ppin);
> +	printf("NVRAM Content Authorization Error Status\n");
> +	printf("    SDSi Auth Err Sts:          %s\n", !!s->regs.auth_err_sts.sdsi_content_auth_err ? "Error" : "Okay");
> +
> +	if (!!s->regs.en_features.metering)
> +		printf("    Metering Auth Err Sts:      %s\n", !!s->regs.auth_err_sts.sdsi_metering_auth_err ? "Error" : "Okay");
> +
>  	printf("Enabled Features\n");
>  	printf("    On Demand:                  %s\n", !!s->regs.en_features.sdsi ? "Enabled" : "Disabled");
> +	printf("    Attestation:                %s\n", !!s->regs.en_features.attestation ? "Enabled" : "Disabled");
> +	printf("    On Demand:                  %s\n", !!s->regs.en_features.sdsi ? "Enabled" : "Disabled");
> +	printf("    Metering:                   %s\n", !!s->regs.en_features.metering ? "Enabled" : "Disabled");
> +	printf("License Key (AKC) Provisioned:  %s\n", !!s->regs.key_prov_sts.license_key_provisioned ? "Yes" : "No");
>  	printf("Authorization Failure Count\n");
>  	printf("    AKC Failure Count:          %d\n", s->regs.auth_fail_count.key_failure_count);
>  	printf("    AKC Failure Threshold:      %d\n", s->regs.auth_fail_count.key_failure_threshold);
> @@ -215,6 +251,10 @@ static int sdsi_read_reg(struct sdsi_dev *s)
>  	printf("Provisioning Availability\n");
>  	printf("    Updates Available:          %d\n", s->regs.prov_avail.available);
>  	printf("    Updates Threshold:          %d\n", s->regs.prov_avail.threshold);
> +	printf("NVRAM Udate Limit\n");
> +	printf("    50%% Limit Reached:         %s\n", !!s->regs.limits.sdsi_50_pct ? "Yes" : "No");
> +	printf("    75%% Limit Reached:         %s\n", !!s->regs.limits.sdsi_75_pct ? "Yes" : "No");
> +	printf("    90%% Limit Reached:         %s\n", !!s->regs.limits.sdsi_90_pct ? "Yes" : "No");
>  	printf("Socket ID:                      %ld\n", s->regs.socket_id & 0xF);
>  
>  	return 0;