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Kernel: Implement more AML method invocation stuff

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Method invocation is starting to come together. This implemenetation
can interpret some of the qemu's functions to enter ACPI mode.

PCI config space access is currently the one thing is between
entering ACPI mode.
This commit is contained in:
Bananymous
2024-04-10 01:52:14 +03:00
parent 23fa39121c
commit ff203d8d34
23 changed files with 619 additions and 108 deletions
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29
kernel/include/kernel/ACPI/AML/Method.h
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@@ -11,6 +11,8 @@ namespace Kernel::ACPI::AML
struct Method : public AML::Scope
{
using Arguments = BAN::Array<BAN::RefPtr<AML::Register>, 7>;
uint8_t arg_count;
bool serialized;
uint8_t sync_level;
@@ -49,10 +51,10 @@ namespace Kernel::ACPI::AML
(method_flags >> 3) & 0x01,
method_flags >> 4
));
if (!context.root_namespace->add_named_object(context, name_string.value(), method))
if (!Namespace::root_namespace()->add_named_object(context, name_string.value(), method))
return ParseResult::Failure;
auto method_scope = context.root_namespace->resolve_path(context.scope, name_string.value());
auto method_scope = Namespace::root_namespace()->resolve_path(context.scope, name_string.value());
if (!method_scope.has_value())
return ParseResult::Failure;
method->term_list = method_pkg.value();
@@ -66,37 +68,32 @@ namespace Kernel::ACPI::AML
return ParseResult::Success;
}
BAN::Optional<BAN::RefPtr<AML::Node>> evaluate(BAN::RefPtr<AML::Namespace> root_namespace)
BAN::Optional<BAN::RefPtr<AML::Node>> evaluate(Arguments args)
{
ParseContext context;
context.root_namespace = root_namespace.ptr();
context.aml_data = term_list;
context.scope = scope;
AML_DEBUG_PRINTLN("Evaluating method {}", scope);
context.method_args = args;
for (auto& local : context.method_locals)
local = MUST(BAN::RefPtr<AML::Register>::create());
BAN::Optional<BAN::RefPtr<AML::Node>> return_value;
ASSERT(arg_count == 0);
while (context.aml_data.size() > 0)
{
if (static_cast<AML::Byte>(context.aml_data[0]) == AML::Byte::ReturnOp)
auto parse_result = AML::parse_object(context);
if (parse_result.returned())
{
context.aml_data = context.aml_data.slice(1);
auto result = AML::parse_object(context);
if (result.success())
return_value = result.node();
return_value = parse_result.node();
break;
}
auto object_result = AML::parse_object(context);
if (!object_result.success())
if (!parse_result.success())
break;
}
while (!context.created_objects.empty())
{
root_namespace->remove_named_object(context.created_objects.back());
Namespace::root_namespace()->remove_named_object(context.created_objects.back());
context.created_objects.pop_back();
}