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Kernel: Add a method to retrieve the Physical ID for a PCI address

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This commit is contained in:
Liav A 2020-12-18 20:24:32 +02:00 committed by Andreas Kling
parent 85b4256d10
commit 97b36febd5
Notes: sideshowbarker 2024-07-19 00:42:36 +09:00 
Author: https://github.com/supercomputer7
Commit: https://github.com/SerenityOS/serenity/commit/97b36febd56
Pull-request: https://github.com/SerenityOS/serenity/pull/4462
2 changed files with 20 additions and 0 deletions
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18
Kernel/PCI/Access.cpp
View File

@ -58,6 +58,19 @@ Access::Access()
s_access = this;
}
PhysicalID Access::get_physical_id(Address address) const
{
for (auto physical_id : m_physical_ids) {
if (physical_id.address().seg() == address.seg()
&& physical_id.address().bus() == address.bus()
&& physical_id.address().slot() == address.slot()
&& physical_id.address().function() == address.function()) {
return physical_id;
}
}
ASSERT_NOT_REACHED();
}
u8 Access::early_read8_field(Address address, u32 field)
{
IO::out32(PCI_ADDRESS_PORT, address.io_address_for_field(field));
@ -137,6 +150,11 @@ Optional<u8> get_capabilities_pointer(Address address)
return {};
}
PhysicalID get_physical_id(Address address)
{
return Access::the().get_physical_id(address);
}
Vector<Capability> get_capabilities(Address address)
{
auto capabilities_pointer = PCI::get_capabilities_pointer(address);

2
Kernel/PCI/Access.h
View File

@ -60,6 +60,8 @@ public:
virtual u16 read16_field(Address address, u32 field) = 0;
virtual u32 read32_field(Address address, u32 field) = 0;
PhysicalID get_physical_id(Address address) const;
protected:
virtual void enumerate_hardware(Function<void(Address, ID)>) = 0;