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https://github.com/SerenityOS/serenity
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26cff62a0a
Since these are now only used to represent RAM pages, (and not MMIO pages) rename them to make their purpose more obvious.
27 lines
1022 B
C++
27 lines
1022 B
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Memory/ScatterGatherList.h>
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namespace Kernel::Memory {
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ErrorOr<LockRefPtr<ScatterGatherList>> ScatterGatherList::try_create(AsyncBlockDeviceRequest& request, Span<NonnullRefPtr<PhysicalRAMPage>> allocated_pages, size_t device_block_size, StringView region_name)
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{
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auto vm_object = TRY(AnonymousVMObject::try_create_with_physical_pages(allocated_pages));
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auto size = TRY(page_round_up((request.block_count() * device_block_size)));
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auto region = TRY(MM.allocate_kernel_region_with_vmobject(vm_object, size, region_name, Region::Access::Read | Region::Access::Write, Region::Cacheable::Yes));
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return adopt_lock_ref_if_nonnull(new (nothrow) ScatterGatherList(vm_object, move(region)));
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}
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ScatterGatherList::ScatterGatherList(NonnullLockRefPtr<AnonymousVMObject> vm_object, NonnullOwnPtr<Region> dma_region)
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: m_vm_object(move(vm_object))
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, m_dma_region(move(dma_region))
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{
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}
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}
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