[2/3] acpi: method: add _LPI test

Signed-off-by: Alex Hung <alex.hung@canonical.com>
---
 src/acpi/method/method.c | 123 ++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 122 insertions(+), 1 deletion(-)

On 15/01/16 13:08, Alex Hung wrote:
> Signed-off-by: Alex Hung <alex.hung@canonical.com>
> ---
>  src/acpi/method/method.c | 123 ++++++++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 122 insertions(+), 1 deletion(-)
> 
> diff --git a/src/acpi/method/method.c b/src/acpi/method/method.c
> index 37c0103..9a412e5 100644
> --- a/src/acpi/method/method.c
> +++ b/src/acpi/method/method.c
> @@ -127,7 +127,7 @@
>   * _Lxx  5.6.4.1	n/a
>   * _LCK  6.3.4		Y
>   * _LID  9.4.1		Y
> - * _LPI  8.4.4.3	N
> + * _LPI  8.4.4.3	Y
>   * _MAT  6.2.9		N
>   * _MBM  9.12.2.1	Y
>   * _MLS  6.1.7		Y
> @@ -4123,6 +4123,126 @@ static int method_test_TSS(fwts_framework *fw)
>   * Section 8.4.4 Lower Power Idle States
>  */
>  
> +static void method_test_LPI_return(
> +	fwts_framework *fw,
> +	char *name,
> +	ACPI_BUFFER *buf,
> +	ACPI_OBJECT *obj,
> +	void *private)
> +{
> +	uint32_t i, j;
> +	bool failed = false;
> +
> +	FWTS_UNUSED(private);
> +
> +	if (method_check_type(fw, name, buf, ACPI_TYPE_PACKAGE) != FWTS_OK)
> +		return;
> +
> +	if (method_package_count_min(fw, name, "_LPI", obj, 3) != FWTS_OK)
> +		return;
> +
> +	/* first 3 elements are integers, and rests are packages */
> +	for (i = 0; i < obj->Package.Count; i++) {
> +		if (i < 3) {
> +			if (obj->Package.Elements[i].Type != ACPI_TYPE_INTEGER) {
> +					fwts_failed(fw, LOG_LEVEL_HIGH,
> +					"Method_LPIBadElementType",
> +					"%s element %" PRIu32 " is not an integer.", name, i);
> +				failed = true;
> +				continue;
> +			}
> +
> +			if (i == 0) {
> +				if (obj->Package.Elements[i].Integer.Value != 0) {
> +					fwts_failed(fw, LOG_LEVEL_HIGH,
> +						"Method_RDIBadID",

That looks like a cut-n-paste bug.  I think it should be
Method_LPIBadRevision

> +						"%s: Expected Revision to be 0, "
> +						"got 0x%8.8" PRIx64 ".", name,

Minor quibble, revision is a WORD, so perhaps should use 0x%4.4

> +						(uint64_t)obj->Package.Elements[i].Integer.Value);
> +					failed = true;
> +				}
> +			} else if (i == 2) {
> +				if (obj->Package.Elements[i].Integer.Value != obj->Package.Count - 3) {
> +					fwts_failed(fw, LOG_LEVEL_HIGH,
> +					"Method_LPIBadCount",
> +					"%s Count reports %" PRIu32 ", but there are %" PRIu32 " sub-packages.",
> +					name, (uint32_t) obj->Package.Elements[i].Integer.Value,
> +					obj->Package.Count - 3);
> +					failed = true;
> +				}
> +			}
> +		}	else {

I'd prefer:
		} else {

> +			ACPI_OBJECT *pkg;
> +			if (obj->Package.Elements[i].Type != ACPI_TYPE_PACKAGE) {
> +					fwts_failed(fw, LOG_LEVEL_HIGH,
> +					"Method_LPIBadElementType",
> +					"%s element %" PRIu32 " is not a package.", name, i);
> +				failed = true;
> +				continue;
> +			}
> +
> +			pkg = &obj->Package.Elements[i];
> +			for (j = 0; j < pkg->Package.Count; j++) {
> +				switch (j) {
> +				case 0 ... 5:
> +					if (pkg->Package.Elements[j].Type != ACPI_TYPE_INTEGER) {
> +						fwts_failed(fw, LOG_LEVEL_HIGH,
> +							"Method_LPIBadESublementType",
> +							"%s sub-package %" PRIu32 " element %" PRIu32 " is not "
> +							"a Reference.", name, i, j);
> +						failed = true;
> +					}
> +					break;
> +				case 6:
> +					if (pkg->Package.Elements[j].Type != ACPI_TYPE_INTEGER &&
> +					    pkg->Package.Elements[j].Type != ACPI_TYPE_BUFFER) {
> +						fwts_failed(fw, LOG_LEVEL_HIGH,
> +							"Method_LPIBadESublementType",
> +							"%s sub-package %" PRIu32 " element %" PRIu32 " is not "
> +							"a Buffer.", name, i, j);

Should that be: "a Buffer or an Integer.", name, i, j);

> +						failed = true;
> +					}
> +					break;
> +				case 7 ... 8:
> +					break;
> +					if (pkg->Package.Elements[j].Type != ACPI_TYPE_BUFFER) {
> +						fwts_failed(fw, LOG_LEVEL_HIGH,
> +							"Method_LPIBadESublementType",
> +							"%s sub-package %" PRIu32 " element %" PRIu32 " is not "
> +							"a Buffer.", name, i, j);
> +						failed = true;
> +					}
> +				case 9:
> +					if (pkg->Package.Elements[j].Type != ACPI_TYPE_STRING) {
> +						fwts_failed(fw, LOG_LEVEL_HIGH,
> +							"Method_LPIBadESublementType",
> +							"%s sub-package %" PRIu32 " element %" PRIu32 " is not "
> +							"a String.", name, i, j);
> +						failed = true;
> +					}
> +					break;
> +				default:
> +					fwts_failed(fw, LOG_LEVEL_HIGH,
> +						"Method_LPIBadESublement",
> +						"%s sub-package %" PRIu32 " element %" PRIu32 " should have "
> +						"9 elements, got .", name, i, j+1);
> +					failed = true;
> +					break;
> +				}
> +			}
> +		}
> +	}
> +
> +	if (!failed)
> +		method_passed_sane(fw, name, "package");
> +}
> +
> +static int method_test_LPI(fwts_framework *fw)
> +{
> +	return method_evaluate_method(fw, METHOD_OPTIONAL,
> +		"_LPI", NULL, 0, method_test_LPI_return, NULL);
> +}
> +
>  static void method_test_RDI_return(
>  	fwts_framework *fw,
>  	char *name,
> @@ -6898,6 +7018,7 @@ static fwts_framework_minor_test method_tests[] = {
>  	{ method_test_TSS, "Test _TSS (Throttling Supported States)." },
>  
>  	/* Section 8.4.4 Lower Power Idle States */
> +	{ method_test_LPI, "Test _LPI (Low Power Idle States)." },
>  	{ method_test_RDI, "Test _RDI (Resource Dependencies for Idle)." },
>  
>  	/* Section 8.5 Processor Aggregator Device */
>