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Kernel: Evaluate _REG on devices for embedded controller if needed

This commit is contained in:
Bananymous 2024-04-17 00:52:57 +03:00
parent b959181afd
commit f97fb1b35d
1 changed files with 44 additions and 0 deletions
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44
kernel/kernel/ACPI/AML/Scope.cpp
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@ -1,6 +1,8 @@
#include <kernel/ACPI/AML/Device.h>
#include <kernel/ACPI/AML/Integer.h>
#include <kernel/ACPI/AML/ParseContext.h>
#include <kernel/ACPI/AML/Pkg.h>
#include <kernel/ACPI/AML/Region.h>
#include <kernel/ACPI/AML/Scope.h>
namespace Kernel::ACPI
@ -93,6 +95,48 @@ namespace Kernel::ACPI
AML_DEBUG_PRINTLN("Initializing {}", scope->scope);
#endif
if (auto reg = Namespace::root_namespace()->find_object(scope->scope, AML::NameString("_REG"sv), Namespace::FindMode::ForceAbsolute))
{
bool embedded_controller = false;
Namespace::for_each_child(scope->scope,
[&](const auto&, auto& child)
{
if (child->type != AML::Node::Type::OpRegion)
return;
auto* region = static_cast<AML::OpRegion*>(child.ptr());
if (region->region_space == AML::OpRegion::RegionSpace::EmbeddedController)
embedded_controller = true;
}
);
if (embedded_controller)
{
if (reg->type != AML::Node::Type::Method)
{
AML_ERROR("Object {}._REG is not a method", scope->scope);
return false;
}
auto* method = static_cast<Method*>(reg.ptr());
if (method->arg_count != 2)
{
AML_ERROR("Method {}._REG has {} arguments, expected 2", scope->scope, method->arg_count);
return false;
}
BAN::RefPtr<AML::Node> embedded_controller = MUST(BAN::RefPtr<AML::Integer>::create(static_cast<uint64_t>(AML::OpRegion::RegionSpace::EmbeddedController)));
Method::Arguments arguments;
arguments[0] = MUST(BAN::RefPtr<AML::Register>::create(embedded_controller));
arguments[1] = MUST(BAN::RefPtr<AML::Register>::create(AML::Integer::Constants::One));
BAN::Vector<uint8_t> sync_stack;
if (!method->evaluate(arguments, sync_stack).has_value())
{
AML_ERROR("Failed to evaluate {}._REG(EmbeddedController, 1), ignoring device", scope->scope);
return false;
}
}
}
bool run_ini = true;
bool init_children = true;