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Kernel: Map DMA and PCI MMIO as uncached

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Bananymous
2024-07-30 11:10:08 +03:00
parent bb1738db8c
commit 9bc02c81f8
5 changed files with 11 additions and 9 deletions
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2
kernel/kernel/Memory/DMARegion.cpp
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@@ -26,7 +26,7 @@ namespace Kernel
vaddr_guard.disable();
paddr_guard.disable();
PageTable::kernel().map_range_at(paddr, vaddr, size, PageTable::Flags::ReadWrite | PageTable::Flags::Present);
PageTable::kernel().map_range_at(paddr, vaddr, size, PageTable::Flags::ReadWrite | PageTable::Flags::Present, PageTable::MemoryType::Uncached);
return BAN::UniqPtr<DMARegion>::adopt(region_ptr);
}

2
kernel/kernel/PCI.cpp
View File

@@ -246,7 +246,7 @@ namespace Kernel::PCI
{
vaddr_t vaddr = PageTable::kernel().reserve_free_page(KERNEL_OFFSET);
ASSERT(vaddr);
PageTable::kernel().map_page_at(pcie_paddr, vaddr, PageTable::Flags::ReadWrite | PageTable::Flags::Present);
PageTable::kernel().map_page_at(pcie_paddr, vaddr, PageTable::Flags::ReadWrite | PageTable::Flags::Present, PageTable::MemoryType::Uncached);
m_mmio_config = vaddr;
}