mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 17:42:43 +00:00
500b7b08d6
The Storage subsystem, like the Audio and HID subsystems, exposes Unix device files (for example, in the /dev directory). To ensure consistency across the repository, we should make the Storage subsystem to reside in the Kernel/Devices directory like the two other mentioned subsystems.
55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
/*
|
|
* Copyright (c) 2021-2022, Liav A. <liavalb@hotmail.co.il>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <Kernel/Devices/Storage/ATA/AHCI/InterruptHandler.h>
|
|
|
|
namespace Kernel {
|
|
|
|
UNMAP_AFTER_INIT ErrorOr<NonnullOwnPtr<AHCIInterruptHandler>> AHCIInterruptHandler::create(AHCIController& controller, u8 irq, AHCI::MaskedBitField taken_ports)
|
|
{
|
|
auto port_handler = TRY(adopt_nonnull_own_or_enomem(new (nothrow) AHCIInterruptHandler(controller, irq, taken_ports)));
|
|
port_handler->allocate_resources_and_initialize_ports();
|
|
return port_handler;
|
|
}
|
|
|
|
void AHCIInterruptHandler::allocate_resources_and_initialize_ports()
|
|
{
|
|
// Clear pending interrupts, if there are any!
|
|
m_pending_ports_interrupts.set_all();
|
|
enable_irq();
|
|
}
|
|
|
|
UNMAP_AFTER_INIT AHCIInterruptHandler::AHCIInterruptHandler(AHCIController& controller, u8 irq, AHCI::MaskedBitField taken_ports)
|
|
: PCIIRQHandler(controller, irq)
|
|
, m_parent_controller(controller)
|
|
, m_taken_ports(taken_ports)
|
|
, m_pending_ports_interrupts(create_pending_ports_interrupts_bitfield())
|
|
{
|
|
dbgln_if(AHCI_DEBUG, "AHCI Port Handler: IRQ {}", irq);
|
|
}
|
|
|
|
AHCI::MaskedBitField AHCIInterruptHandler::create_pending_ports_interrupts_bitfield() const
|
|
{
|
|
return AHCI::MaskedBitField((u32 volatile&)m_parent_controller->hba().control_regs.is, m_taken_ports.bit_mask());
|
|
}
|
|
|
|
AHCIInterruptHandler::~AHCIInterruptHandler() = default;
|
|
|
|
bool AHCIInterruptHandler::handle_irq(RegisterState const&)
|
|
{
|
|
dbgln_if(AHCI_DEBUG, "AHCI Port Handler: IRQ received");
|
|
if (m_pending_ports_interrupts.is_zeroed())
|
|
return false;
|
|
for (auto port_index : m_pending_ports_interrupts.to_vector()) {
|
|
dbgln_if(AHCI_DEBUG, "AHCI Port Handler: Handling IRQ for port {}", port_index);
|
|
m_parent_controller->handle_interrupt_for_port({}, port_index);
|
|
// We do this to clear the pending interrupt after we handled it.
|
|
m_pending_ports_interrupts.set_at(port_index);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
}
|