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Kernel: Enable PCI ECAM method again if available

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Apparently we don't enable PCI ECAM (MMIO access to the PCI
configuration space) even if we can. This is a regression, as it was
enabled in the past and in unknown time it was regressed.

The CommandLine::is_mmio_enabled method was renamed to
CommandLine::is_pci_ecam_enabled to better represent the meaning
of this method and what it determines.

Also, an UNMAP_AFTER_INIT macro was removed from a method
in the MMIOAccess class as it halted the system when the kernel
tried to access devices after the boot process.
This commit is contained in:
Liav A 2021-04-03 13:29:07 +03:00 • committed by Andreas Kling
parent d09cd85b6c
commit 441e374396
4 changed files with 10 additions and 5 deletions
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2
Kernel/PCI/Initializer.cpp
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@ -50,7 +50,7 @@ UNMAP_AFTER_INIT static Access::Type detect_optimal_access_type(bool mmio_allowe
UNMAP_AFTER_INIT void initialize()
{
bool mmio_allowed = kernel_command_line().is_mmio_enabled();
bool mmio_allowed = kernel_command_line().is_pci_ecam_enabled();
if (detect_optimal_access_type(mmio_allowed) == Access::Type::MMIO)
MMIOAccess::initialize(ACPI::Parser::the()->find_table("MCFG"));