RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-13 21:47:39 +00:00
Code Issues Activity Actions

Kernel/Storage: Don't allocate IRQs in NVMeCntlr when nvme_poll passed

Browse source
This commit is contained in:
Sönke Holz 2024-02-22 16:50:55 +01:00 • committed by Andrew Kaster
parent 0f54d797d2
commit cdc0c9f094
4 changed files with 15 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

15
Kernel/Devices/Storage/NVMe/NVMeController.cpp
View file

@ -54,8 +54,10 @@ UNMAP_AFTER_INIT ErrorOr<void> NVMeController::initialize(bool is_queue_polled)
m_ready_timeout = Duration::from_milliseconds((CAP_TO(caps) + 1) * 500); // CAP.TO is in 500ms units
calculate_doorbell_stride();
// IO queues + 1 admin queue
m_irq_type = TRY(reserve_irqs(nr_of_queues + 1, true));
if (queue_type == QueueType::IRQ) {
// IO queues + 1 admin queue
m_irq_type = TRY(reserve_irqs(nr_of_queues + 1, true));
}
TRY(create_admin_queue(queue_type));
VERIFY(m_admin_queue_ready == true);
@ -351,7 +353,9 @@ UNMAP_AFTER_INIT ErrorOr<void> NVMeController::create_admin_queue(QueueType queu
m_controller_regs->acq = reinterpret_cast<u64>(AK::convert_between_host_and_little_endian(cq_dma_pages.first()->paddr().as_ptr()));
m_controller_regs->asq = reinterpret_cast<u64>(AK::convert_between_host_and_little_endian(sq_dma_pages.first()->paddr().as_ptr()));
auto irq = TRY(allocate_irq(0)); // Admin queue always uses the 0th index when using MSIx
Optional<u8> irq;
if (queue_type == QueueType::IRQ)
irq = TRY(allocate_irq(0)); // Admin queue always uses the 0th index when using MSIx
maybe_error = start_controller();
if (maybe_error.is_error()) {
@ -398,7 +402,10 @@ UNMAP_AFTER_INIT ErrorOr<void> NVMeController::create_io_queue(u8 qid, QueueType
auto flags = (queue_type == QueueType::IRQ) ? QUEUE_IRQ_ENABLED : QUEUE_IRQ_DISABLED;
flags |= QUEUE_PHY_CONTIGUOUS;
// When using MSIx interrupts, qid is used as an index into the interrupt table
sub.create_cq.irq_vector = (m_irq_type == PCI::InterruptType::PIN) ? 0 : qid;
if (m_irq_type.has_value() && m_irq_type.value() != PCI::InterruptType::PIN)
sub.create_cq.irq_vector = qid;
else
sub.create_cq.irq_vector = 0;
sub.create_cq.cq_flags = AK::convert_between_host_and_little_endian(flags & 0xFFFF);
submit_admin_command(sub, true);
}