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Kernel: Use the new API to query and map BAR spaces in most places

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This might be a bit overkill in some instances, but it's nice to be
consistent
This commit is contained in:
Hendiadyoin1 2024-01-11 23:58:36 +01:00 • committed by Andrew Kaster
parent c65455e122
commit 2dc20f9e39
7 changed files with 28 additions and 26 deletions
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10
Kernel/Bus/USB/EHCI/EHCIController.cpp
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@ -5,6 +5,7 @@
*/
#include <Kernel/Bus/PCI/API.h>
#include <Kernel/Bus/PCI/BarMapping.h>
#include <Kernel/Bus/USB/EHCI/EHCIController.h>
namespace Kernel::USB::EHCI {
@ -13,14 +14,9 @@ ErrorOr<NonnullLockRefPtr<EHCIController>> EHCIController::try_to_initialize(con
{
// FIXME: This assumes the BIOS left us a physical region for the controller
u64 pci_bar_value = PCI::get_BAR(pci_device_identifier, SpaceBaseAddressRegister);
auto pci_bar_space_type = PCI::get_BAR_space_type(pci_bar_value);
if (pci_bar_space_type == PCI::BARSpaceType::Memory64BitSpace) {
u64 next_pci_bar_value = PCI::get_BAR(pci_device_identifier, static_cast<PCI::HeaderType0BaseRegister>(to_underlying(SpaceBaseAddressRegister) + 1));
pci_bar_value |= next_pci_bar_value << 32;
}
auto pci_bar_address = TRY(PCI::get_bar_address(pci_device_identifier, SpaceBaseAddressRegister));
auto pci_bar_space_size = PCI::get_BAR_space_size(pci_device_identifier, SpaceBaseAddressRegister);
auto register_region = TRY(MM.allocate_kernel_region(PhysicalAddress { pci_bar_value }, pci_bar_space_size, {}, Memory::Region::Access::ReadWrite));
auto register_region = TRY(MM.allocate_kernel_region(pci_bar_address, pci_bar_space_size, {}, Memory::Region::Access::ReadWrite));
PCI::enable_bus_mastering(pci_device_identifier);
PCI::enable_memory_space(pci_device_identifier);