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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/MMIOAccess.cpp
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@ -126,7 +126,7 @@ UNMAP_AFTER_INIT MMIOAccess::MMIOAccess(PhysicalAddress p_mcfg)
});
}
UNMAP_AFTER_INIT Optional<VirtualAddress> MMIOAccess::get_device_configuration_space(Address address)
Optional<VirtualAddress> MMIOAccess::get_device_configuration_space(Address address)
{
dbgln_if(PCI_DEBUG, "PCI: Getting device configuration space for {}", address);
for (auto& mapping : m_mapped_device_regions) {