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Determine XHCI controller addresses

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This commit is contained in:
Josh Holtrop 2023-09-07 14:04:30 -04:00
parent 459d5c36aa
commit f3f45445b3
2 changed files with 17 additions and 0 deletions
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2
src/hulk/pci.d
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@ -60,6 +60,8 @@ struct Pci
{
map_memory_regions();
}
spawn_device_instance();
}
private void map_memory_regions()

15
src/hulk/usb/xhci.d
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@ -10,6 +10,7 @@ module hulk.usb.xhci;
import hulk.pci;
import hulk.hurl.a1;
import hulk.klog;
struct XHCI
{
@ -74,8 +75,22 @@ struct XHCI
}
static assert(DoorbellRegister.sizeof == 4u);
private CapabilityRegisters * m_capability_registers;
private OperationalRegisters * m_operational_registers;
private PortRegisters * m_port_registers;
private RuntimeRegisters * m_runtime_registers;
private DoorbellRegister * m_doorbell_registers;
void initialize(Pci.Device * pci_device)
{
void * base_address = pci_device.memory_ranges[0].address;
Klog.writefln("Found XHCI controller at address %x", base_address);
m_capability_registers = cast(CapabilityRegisters *)base_address;
m_operational_registers = cast(OperationalRegisters *)(base_address + m_capability_registers.capability_length);
/* TODO: confirm if 0x400 offset is from m_operation_registers or base_address. */
m_port_registers = cast(PortRegisters *)(cast(void *)m_operational_registers + 0x400);
m_runtime_registers = cast(RuntimeRegisters *)(base_address + m_capability_registers.rts_offset);
m_doorbell_registers = cast(DoorbellRegister *)(base_address + m_capability_registers.doorbell_offset);
}
static void build(Pci.Device * pci_device)