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Kernel: Rewrite all read/write functions to use BAN::ByteSpan

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This allows us to not work with raw pointers and use sized containers
for reading and writing.
This commit is contained in:
Bananymous
2023-10-20 05:07:44 +03:00
parent 71cad2fc38
commit f3d9da9549
36 changed files with 216 additions and 177 deletions
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10
kernel/kernel/Storage/ATA/AHCI/Device.cpp
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@@ -158,28 +158,30 @@ namespace Kernel
__builtin_ia32_pause();
}
BAN::ErrorOr<void> AHCIDevice::read_sectors_impl(uint64_t lba, uint64_t sector_count, uint8_t* buffer)
BAN::ErrorOr<void> AHCIDevice::read_sectors_impl(uint64_t lba, uint64_t sector_count, BAN::ByteSpan buffer)
{
ASSERT(buffer.size() >= sector_count * sector_size());
const size_t sectors_per_page = PAGE_SIZE / sector_size();
for (uint64_t sector_off = 0; sector_off < sector_count; sector_off += sectors_per_page)
{
uint64_t to_read = BAN::Math::min<uint64_t>(sector_count - sector_off, sectors_per_page);
TRY(send_command_and_block(lba + sector_off, to_read, Command::Read));
memcpy(buffer + sector_off * sector_size(), (void*)m_data_dma_region->vaddr(), to_read * sector_size());
memcpy(buffer.data() + sector_off * sector_size(), (void*)m_data_dma_region->vaddr(), to_read * sector_size());
}
return {};
}
BAN::ErrorOr<void> AHCIDevice::write_sectors_impl(uint64_t lba, uint64_t sector_count, const uint8_t* buffer)
BAN::ErrorOr<void> AHCIDevice::write_sectors_impl(uint64_t lba, uint64_t sector_count, BAN::ConstByteSpan buffer)
{
ASSERT(buffer.size() >= sector_count * sector_size());
const size_t sectors_per_page = PAGE_SIZE / sector_size();
for (uint64_t sector_off = 0; sector_off < sector_count; sector_off += sectors_per_page)
{
uint64_t to_read = BAN::Math::min<uint64_t>(sector_count - sector_off, sectors_per_page);
memcpy((void*)m_data_dma_region->vaddr(), buffer + sector_off * sector_size(), to_read * sector_size());
memcpy((void*)m_data_dma_region->vaddr(), buffer.data() + sector_off * sector_size(), to_read * sector_size());
TRY(send_command_and_block(lba + sector_off, to_read, Command::Write));
}