RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 15:38:10 +00:00
Code Issues Activity Actions

Kernel/Net: Support Intel 82574 adapter

Browse source 
We call it E1000E, because the layout for these cards is somewhat not
the same like E1000 supported cards.

Also, this card supports advanced features that are not supported on
8254x cards.
This commit is contained in:
Liav A 2021-06-04 10:11:37 +03:00 • committed by Ali Mohammad Pur
parent 2e2201e8e1
commit c6480a0426
8 changed files with 200 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

50
Kernel/Net/E1000NetworkAdapter.cpp
View file

@ -164,23 +164,39 @@ UNMAP_AFTER_INIT RefPtr<E1000NetworkAdapter> E1000NetworkAdapter::try_to_initial
if (!is_valid_device_id(id.device_id))
return {};
u8 irq = PCI::get_interrupt_line(address);
return adopt_ref_if_nonnull(new E1000NetworkAdapter(address, irq));
auto adapter = adopt_ref_if_nonnull(new E1000NetworkAdapter(address, irq));
if (!adapter)
return {};
if (adapter->initialize())
return adapter;
return {};
}
UNMAP_AFTER_INIT E1000NetworkAdapter::E1000NetworkAdapter(PCI::Address address, u8 irq)
: PCI::Device(address, irq)
, m_io_base(PCI::get_BAR1(pci_address()) & ~1)
, m_rx_descriptors_region(MM.allocate_contiguous_kernel_region(page_round_up(sizeof(e1000_rx_desc) * number_of_rx_descriptors + 16), "E1000 RX", Region::Access::Read | Region::Access::Write))
, m_tx_descriptors_region(MM.allocate_contiguous_kernel_region(page_round_up(sizeof(e1000_tx_desc) * number_of_tx_descriptors + 16), "E1000 TX", Region::Access::Read | Region::Access::Write))
UNMAP_AFTER_INIT void E1000NetworkAdapter::setup_link()
{
set_interface_name(address);
u32 flags = in32(REG_CTRL);
out32(REG_CTRL, flags | ECTRL_SLU);
}
UNMAP_AFTER_INIT void E1000NetworkAdapter::setup_interrupts()
{
out32(REG_INTERRUPT_RATE, 6000); // Interrupt rate of 1.536 milliseconds
out32(REG_INTERRUPT_MASK_SET, INTERRUPT_LSC | INTERRUPT_RXT0 | INTERRUPT_RXO);
in32(REG_INTERRUPT_CAUSE_READ);
enable_irq();
}
UNMAP_AFTER_INIT bool E1000NetworkAdapter::initialize()
{
dmesgln("E1000: Found @ {}", pci_address());
enable_bus_mastering(pci_address());
m_io_base = IOAddress(PCI::get_BAR1(pci_address()) & ~1);
size_t mmio_base_size = PCI::get_BAR_space_size(pci_address(), 0);
m_mmio_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of(PCI::get_BAR0(pci_address()))), page_round_up(mmio_base_size), "E1000 MMIO", Region::Access::Read | Region::Access::Write, Region::Cacheable::No);
if (!m_mmio_region)
return false;
m_mmio_base = m_mmio_region->vaddr();
m_use_mmio = true;
m_interrupt_line = PCI::get_interrupt_line(pci_address());
@ -194,18 +210,20 @@ UNMAP_AFTER_INIT E1000NetworkAdapter::E1000NetworkAdapter(PCI::Address address,
const auto& mac = mac_address();
dmesgln("E1000: MAC address: {}", mac.to_string());
u32 flags = in32(REG_CTRL);
out32(REG_CTRL, flags | ECTRL_SLU);
out32(REG_INTERRUPT_RATE, 6000); // Interrupt rate of 1.536 milliseconds
initialize_rx_descriptors();
initialize_tx_descriptors();
out32(REG_INTERRUPT_MASK_SET, INTERRUPT_LSC | INTERRUPT_RXT0 | INTERRUPT_RXO);
in32(REG_INTERRUPT_CAUSE_READ);
setup_link();
setup_interrupts();
return true;
}
enable_irq();
UNMAP_AFTER_INIT E1000NetworkAdapter::E1000NetworkAdapter(PCI::Address address, u8 irq)
: PCI::Device(address, irq)
, m_rx_descriptors_region(MM.allocate_contiguous_kernel_region(page_round_up(sizeof(e1000_rx_desc) * number_of_rx_descriptors + 16), "E1000 RX", Region::Access::Read | Region::Access::Write))
, m_tx_descriptors_region(MM.allocate_contiguous_kernel_region(page_round_up(sizeof(e1000_tx_desc) * number_of_tx_descriptors + 16), "E1000 TX", Region::Access::Read | Region::Access::Write))
{
set_interface_name(pci_address());
}
UNMAP_AFTER_INIT E1000NetworkAdapter::~E1000NetworkAdapter()