Re: [Qemu-devel] [PATCH v2 03/11] acpi: add aml_create_field()

[Igor Mammedov <imammedo@redhat.com>]

On Wed, 13 Jan 2016 02:50:02 +0800
Xiao Guangrong <guangrong.xiao@linux.intel.com> wrote:

> It will be used by nvdimm acpi
> 
> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
> ---
>  hw/acpi/aml-build.c         | 13 +++++++++++++
>  include/hw/acpi/aml-build.h |  1 +
>  2 files changed, 14 insertions(+)
> 
> diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
> index 78e1290..97c9efb 100644
> --- a/hw/acpi/aml-build.c
> +++ b/hw/acpi/aml-build.c
> @@ -1001,6 +1001,19 @@ Aml *create_field_common(int opcode, Aml *srcbuf, Aml *index, const char *name)
>      return var;
>  }
>  
> +/* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefCreateField */
> +Aml *aml_create_field(Aml *srcbuf, Aml *index, Aml *len, const char *name)
to match spec more closely pls do following:
s/index/bit_index/
s/len/num_bits/

> +{
> +    Aml *var = aml_alloc();
> +    build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */
> +    build_append_byte(var->buf, 0x13); /* CreateFieldOp */
> +    aml_append(var, srcbuf);
> +    aml_append(var, index);
> +    aml_append(var, len);
> +    build_append_namestring(var->buf, "%s", name);
> +    return var;
> +}
> +
>  /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefCreateDWordField */
>  Aml *aml_create_dword_field(Aml *srcbuf, Aml *index, const char *name)
>  {
> diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
> index 6d6f705..e1ba534 100644
> --- a/include/hw/acpi/aml-build.h
> +++ b/include/hw/acpi/aml-build.h
> @@ -346,6 +346,7 @@ Aml *aml_mutex(const char *name, uint8_t sync_level);
>  Aml *aml_acquire(Aml *mutex, uint16_t timeout);
>  Aml *aml_release(Aml *mutex);
>  Aml *aml_alias(const char *source_object, const char *alias_object);
> +Aml *aml_create_field(Aml *srcbuf, Aml *index, Aml *len, const char *name);
>  Aml *aml_create_dword_field(Aml *srcbuf, Aml *index, const char *name);
>  Aml *aml_create_qword_field(Aml *srcbuf, Aml *index, const char *name);
>  Aml *aml_varpackage(uint32_t num_elements);