[PATCH 1/2] lib: acpi: Add support for the new ACPI 5.0 PCCT

Keng-Yu Lin kengyu at canonical.com
Thu Sep 20 08:29:22 UTC 2012


On Tue, Sep 18, 2012 at 9:02 PM, Colin King <colin.king at canonical.com> wrote:
> From: Colin Ian King <colin.king at canonical.com>
>
> ACPI 5.0 now includes the Platform Communications Channel Table
> (see section 14). So, add it to the supported tables.
>
> Signed-off-by: Colin Ian King <colin.king at canonical.com>
> ---
>  src/lib/include/fwts_acpi.h |   25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
>
> diff --git a/src/lib/include/fwts_acpi.h b/src/lib/include/fwts_acpi.h
> index 2a90158..e99d0a7 100644
> --- a/src/lib/include/fwts_acpi.h
> +++ b/src/lib/include/fwts_acpi.h
> @@ -664,6 +664,31 @@ typedef struct {
>          uint8_t         platform_cc_id[12];
>  } __attribute__ ((packed)) fwts_acpi_table_rasf;
>
> +/* Section 14.1, Platform Communications Channel Table */
> +typedef struct {
> +       fwts_acpi_table_header  header;
> +       uint32_t        flags;
> +       uint8_t         reserved[8];
> +} __attribute__ ((packed)) fwts_acpi_table_pcct;
> +
> +typedef struct {
> +       uint8_t         type;
> +       uint8_t         length;
> +} __attribute__ ((packed)) fwts_acpi_table_pcct_subspace_header;
> +
> +typedef struct {
> +       fwts_acpi_table_pcct_subspace_header    header;
> +       uint8_t         reserved[6];
> +       uint64_t        base_address;
> +       uint64_t        length;
> +       fwts_acpi_gas   doorbell_register;
> +       uint64_t        doorbell_preserve;
> +       uint64_t        doorbell_write;
> +       uint32_t        nominal_latency;
> +       uint32_t        max_periodic_access_rate;
> +       uint16_t        min_request_turnaround_time;
> +} __attribute__ ((packed)) fwts_acpi_table_pcct_subspace_type_0;
> +
>  void fwts_acpi_table_get_header(fwts_acpi_table_header *hdr, uint8_t *data);
>
>  #endif
> --
> 1.7.10.4
>
Acked-by: Keng-Yu Lin <kengyu at canonical.com>



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