[PATCH v2 07/18] ACPI / table: Print GIC information when MADT is parsed

Zheng, Lv lv.zheng at intel.com
Wed Aug 6 18:41:52 PDT 2014


Hi,

> From: Hanjun Guo [mailto:hanjun.guo at linaro.org]
> Sent: Monday, August 04, 2014 11:28 PM
> To: Catalin Marinas; Rafael J. Wysocki; Mark Rutland
> 
> When MADT is parsed, print GIC information to make the boot
> log look pretty.
> 
> Signed-off-by: Hanjun Guo <hanjun.guo at linaro.org>
> Signed-off-by: Tomasz Nowicki <tomasz.nowicki at linaro.org>
> ---
>  drivers/acpi/tables.c |   39 ++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 38 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
> index 6d5a6cd..77f8bb1 100644
> --- a/drivers/acpi/tables.c
> +++ b/drivers/acpi/tables.c
> @@ -183,6 +183,44 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
>  		}
>  		break;
> 
> +	case ACPI_MADT_TYPE_GENERIC_INTERRUPT:
> +		{
> +			struct acpi_madt_generic_interrupt *p =
> +				(struct acpi_madt_generic_interrupt *)header;
> +			pr_info("GICC (acpi_id[0x%04x] address[0x%08llx] MPDIR[0x%llx] %s)\n",
> +				p->uid, p->base_address, p->arm_mpidr,

Just reminders.
The acpi_id looks vague, is it a UID for the processor?
Should 0x%08llx for base_address be %p?

> +				(p->flags & ACPI_MADT_ENABLED) ? "enabled" : "disabled");
> +
> +		}
> +		break;
> +
> +	case ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR:
> +		{
> +			struct acpi_madt_generic_distributor *p =
> +				(struct acpi_madt_generic_distributor *)header;
> +			pr_info("GIC Distributor (gic_id[0x%04x] address[0x%08llx] gsi_base[%d])\n",
> +				p->gic_id, p->base_address, p->global_irq_base);
> +		}
> +		break;

Same question for base_address.

> +
> +	case ACPI_MADT_TYPE_GENERIC_MSI_FRAME:
> +		{
> +			struct acpi_madt_generic_msi_frame *p =
> +				(struct acpi_madt_generic_msi_frame *)header;
> +			pr_info("GIC MSI Frame (msi_fame_id[%d] address[0x%08llx])\n",
> +				p->msi_frame_id, p->base_address);

Ditto.

> +		}
> +		break;
> +
> +	case ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR:
> +		{
> +			struct acpi_madt_generic_redistributor *p =
> +				(struct acpi_madt_generic_redistributor *)header;
> +			pr_info("GIC Redistributor (address[0x%08llx] region_size[0x%x])\n",
> +				p->base_address, p->length);

Ditto.

> +		}
> +		break;
> +
>  	default:
>  		pr_warn("Found unsupported MADT entry (type = 0x%x)\n",
>  			header->type);
> @@ -190,7 +228,6 @@ void acpi_table_print_madt_entry(struct acpi_subtable_header *header)
>  	}
>  }
> 
> -
>  int __init
>  acpi_table_parse_entries(char *id,
>  			     unsigned long table_size,

This block shouldn't be a part of this patch.

Thanks and best regards
-Lv

> --
> 1.7.9.5




More information about the linux-arm-kernel mailing list