linux-kernel - Re: [PATCH] acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec

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Date:	Mon, 13 Feb 2012 10:24:32 +0800
From:	Chen Gong <gong.chen@...ux.intel.com>
To:	Jiang Liu <liuj97@...il.com>
CC:	Tony Luck <tony.luck@...el.com>, Len Brown <len.brown@...el.com>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	ying.huang@...el.com
Subject: Re: [PATCH] acpi/apei/einj: Add extensions to EINJ from rev 5.0 of
 acpi spec

于 2012/2/12 17:33, Jiang Liu 写道:
> Hi Tony and Gong,
> 	Should we remove the target memory address from the resource list of
> ACPI5 trigger too? Otherwise we may also encounter resource conflict with ACPI5
> trigger table.
>
> @@ -365,7 +365,7 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type,
>           * This will cause resource conflict with regular memory.  So
>           * remove it from trigger table resources.
>           */
> -       if (param_extension&&  (type&  0x0038)&&  param2) {
> +       if ((param_extension || acpi5)&&  (type&  0x0038)&&  param2) {
>                  struct apei_resources addr_resources;
>                  apei_resources_init(&addr_resources);
>                  trigger_param_region = einj_get_trigger_parameter_region(
> 	
> On 01/18/2012 04:10 AM, Tony Luck wrote:
>> @@ -293,12 +386,56 @@ static int __einj_error_inject(u32 type, u64 param1, u64 param2)
>>   	if (rc)
>>   		return rc;
>>   	apei_exec_ctx_set_input(&ctx, type);
>> -	rc = apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE);
>> -	if (rc)
>> -		return rc;
>> -	if (einj_param) {
>> -		writeq(param1,&einj_param->param1);
>> -		writeq(param2,&einj_param->param2);
>> +	if (acpi5) {
>> +		struct set_error_type_with_address *v5param = einj_param;
>> +
>> +		writel(type,&v5param->type);
>> +		if (type&  0x80000000) {
>> +			switch (vendor_flags) {
>> +			case SETWA_FLAGS_APICID:
>> +				writel(param1,&v5param->apicid);
>> +				break;
>> +			case SETWA_FLAGS_MEM:
>> +				writeq(param1,&v5param->memory_address);
>> +				writeq(param2,&v5param->memory_address_range);
>> +				break;
>> +			case SETWA_FLAGS_PCIE_SBDF:
>> +				writel(param1,&v5param->pcie_sbdf);
>> +				break;
>> +			}
>> +			writel(vendor_flags,&v5param->flags);
>> +		} else {
>> +			switch (type) {
>> +			case ACPI_EINJ_PROCESSOR_CORRECTABLE:
>> +			case ACPI_EINJ_PROCESSOR_UNCORRECTABLE:
>> +			case ACPI_EINJ_PROCESSOR_FATAL:
>> +				writel(param1,&v5param->apicid);
>> +				writel(SETWA_FLAGS_APICID,&v5param->flags);
>> +				break;
>> +			case ACPI_EINJ_MEMORY_CORRECTABLE:
>> +			case ACPI_EINJ_MEMORY_UNCORRECTABLE:
>> +			case ACPI_EINJ_MEMORY_FATAL:
>> +				writeq(param1,&v5param->memory_address);
>> +				writeq(param2,&v5param->memory_address_range);
>> +				writel(SETWA_FLAGS_MEM,&v5param->flags);
>> +				break;
>> +			case ACPI_EINJ_PCIX_CORRECTABLE:
>> +			case ACPI_EINJ_PCIX_UNCORRECTABLE:
>> +			case ACPI_EINJ_PCIX_FATAL:
>> +				writel(param1,&v5param->pcie_sbdf);
>> +				writel(SETWA_FLAGS_PCIE_SBDF,&v5param->flags);
>> +				break;
>> +			}
>> +		}
> I'm a little confused about the ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS command in ACPI5.
> The above code seems like a hard-coded version of
> apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS).
> Hi Gong, could you please share the ACPI5 version of EINJ table with me? So I could
> get better understanding of the ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS command.
>

You can check ACPI5.0 spec 18.6 for detail. We have internal BIOS to support
ACPI5 and I'm not sure if there is external product to support ACPI5 formally.
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