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Kernel: Make VirtIO::Queue construction fallible

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This commit is contained in:
Idan Horowitz 2022-01-21 11:51:02 +02:00 • committed by Andreas Kling
parent 17584d8a84
commit c3099382b8
3 changed files with 26 additions and 15 deletions
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8
Kernel/Bus/VirtIO/Queue.h
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@ -28,10 +28,10 @@ enum class BufferType {
class Queue {
public:
Queue(u16 queue_size, u16 notify_offset);
static ErrorOr<NonnullOwnPtr<Queue>> try_create(u16 queue_size, u16 notify_offset);
~Queue();
bool is_null() const { return !m_queue_region; }
u16 notify_offset() const { return m_notify_offset; }
void enable_interrupts();
@ -52,6 +52,8 @@ public:
bool should_notify() const;
private:
Queue(NonnullOwnPtr<Memory::Region> queue_region, u16 queue_size, u16 notify_offset);
void reclaim_buffer_chain(u16 chain_start_index, u16 chain_end_index, size_t length_of_chain);
PhysicalAddress to_physical(const void* ptr) const
@ -93,7 +95,7 @@ private:
QueueDescriptor* m_descriptors { nullptr };
QueueDriver* m_driver { nullptr };
QueueDevice* m_device { nullptr };
OwnPtr<Memory::Region> m_queue_region;
NonnullOwnPtr<Memory::Region> m_queue_region;
Spinlock m_lock;
friend class QueueChain;