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Kernel/Storage: Modernize ATA IDE controller initialization code

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This is done by 2 ways which both fit very well together:
- We stop use LockRefPtrs. We also don't allow expansion of the
  m_channels member, by setting it to be a fixed Array of 2
  IDEChannels.
- More error propagation through the code, in the construction point of
  IDEChannel(s). This means that in the future we could technically do
  something meaningful with OOM conditions when initializing an IDE
  controller.
This commit is contained in:
Liav A 2023-04-11 00:47:52 +03:00 • committed by Linus Groh
parent dac7e911e6
commit 0050358cd3
5 changed files with 17 additions and 17 deletions
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8
Kernel/Storage/ATA/GenericIDE/Channel.cpp
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@ -24,16 +24,16 @@ namespace Kernel {
#define PATA_PRIMARY_IRQ 14
#define PATA_SECONDARY_IRQ 15
UNMAP_AFTER_INIT NonnullLockRefPtr<IDEChannel> IDEChannel::create(IDEController const& controller, IOWindowGroup io_window_group, ChannelType type)
UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<IDEChannel>> IDEChannel::create(IDEController const& controller, IOWindowGroup io_window_group, ChannelType type)
{
auto ata_identify_data_buffer = KBuffer::try_create_with_size("ATA Identify Page"sv, 4096, Memory::Region::Access::ReadWrite, AllocationStrategy::AllocateNow).release_value();
return adopt_lock_ref(*new IDEChannel(controller, move(io_window_group), type, move(ata_identify_data_buffer)));
return adopt_nonnull_ref_or_enomem(new (nothrow) IDEChannel(controller, move(io_window_group), type, move(ata_identify_data_buffer)));
}
UNMAP_AFTER_INIT NonnullLockRefPtr<IDEChannel> IDEChannel::create(IDEController const& controller, u8 irq, IOWindowGroup io_window_group, ChannelType type)
UNMAP_AFTER_INIT ErrorOr<NonnullRefPtr<IDEChannel>> IDEChannel::create(IDEController const& controller, u8 irq, IOWindowGroup io_window_group, ChannelType type)
{
auto ata_identify_data_buffer = KBuffer::try_create_with_size("ATA Identify Page"sv, 4096, Memory::Region::Access::ReadWrite, AllocationStrategy::AllocateNow).release_value();
return adopt_lock_ref(*new IDEChannel(controller, irq, move(io_window_group), type, move(ata_identify_data_buffer)));
return adopt_nonnull_ref_or_enomem(new (nothrow) IDEChannel(controller, irq, move(io_window_group), type, move(ata_identify_data_buffer)));
}
StringView IDEChannel::channel_type_string() const