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Kernel: Page-align AC'97 audio buffer descriptor list
This was broken in commit 0a1b34c753
/ PR #11687 since the buffer
descriptor list size was not page-aligned, and the new
`MM.allocate_dma_buffer_pages` expects a page-aligned size.
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parent
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864f842dfe
Notes:
sideshowbarker
2024-07-17 21:18:47 +09:00
Author: https://github.com/gmta Commit: https://github.com/SerenityOS/serenity/commit/864f842dfe6 Pull-request: https://github.com/SerenityOS/serenity/pull/11765 Reviewed-by: https://github.com/IdanHo ✅
@ -200,7 +200,8 @@ ErrorOr<size_t> AC97::write(OpenFileDescription&, u64, UserOrKernelBuffer const&
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m_output_buffer = TRY(MM.allocate_dma_buffer_pages(m_output_buffer_page_count * PAGE_SIZE, "AC97 Output buffer"sv, Memory::Region::Access::Write));
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}
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if (!m_buffer_descriptor_list) {
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constexpr size_t buffer_descriptor_list_size = buffer_descriptor_list_max_entries * sizeof(BufferDescriptorListEntry);
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size_t buffer_descriptor_list_size = buffer_descriptor_list_max_entries * sizeof(BufferDescriptorListEntry);
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buffer_descriptor_list_size = TRY(Memory::page_round_up(buffer_descriptor_list_size));
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m_buffer_descriptor_list = TRY(MM.allocate_dma_buffer_pages(buffer_descriptor_list_size, "AC97 Buffer Descriptor List"sv, Memory::Region::Access::Write));
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}
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