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[Voyageurs] Send GetDescriptor command to the device.

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This commit is contained in:
Drew Galbraith 2024-02-23 11:42:10 -08:00
parent 3d7e911045
commit b0b7e2faff
9 changed files with 192 additions and 6 deletions
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34
sys/voyageurs/xhci/xhci_driver.cpp
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@ -1,9 +1,11 @@
#include "xhci/xhci_driver.h"
#include <mammoth/proc/thread.h>
#include <mammoth/util/debug.h>
#include <mammoth/util/memory_region.h>
#include <zcall.h>
#include "xhci/descriptors.h"
#include "xhci/trb.h"
#include "xhci/xhci.h"
@ -15,6 +17,22 @@ void interrupt_thread(void* void_driver) {
crash("Driver returned from interrupt loop", glcr::INTERNAL);
}
void configure_device(void* void_device_slot) {
DeviceSlot* device_slot = static_cast<DeviceSlot*>(void_device_slot);
dbgln("Configuring device");
ReadControlCommand<DeviceDescriptor> command;
device_slot->ExecuteReadControlCommand(command);
DeviceDescriptor* descriptor = command.AwaitResult();
dbgln("Descriptor Type {x}, ({x})", descriptor->type, descriptor->usb_spec);
dbgln("Device Class/Sub/Protocol: {x}/{x}/{x}", descriptor->device_class,
descriptor->device_subclass, descriptor->device_protocol);
}
glcr::ErrorOr<glcr::UniquePtr<XhciDriver>> XhciDriver::InitiateDriver(
yellowstone::YellowstoneClient& yellowstone) {
yellowstone::XhciInfo info;
@ -43,6 +61,9 @@ void XhciDriver::InterruptLoop() {
while (event_ring_.HasNext()) {
XhciTrb trb = event_ring_.Read();
switch (GetType(trb)) {
case TrbType::Transfer:
HandleTransferCompletion(trb);
break;
case TrbType::CommandCompletion:
HandleCommandCompletion(trb);
break;
@ -52,6 +73,7 @@ void XhciDriver::InterruptLoop() {
command_ring_.EnqueueTrb(CreateEnableSlotTrb());
doorbells_->doorbell[0] = 0;
break;
default:
dbgln("Unknown TRB Type {x} received.", (uint8_t)GetType(trb));
break;
@ -132,6 +154,7 @@ glcr::ErrorCode XhciDriver::ParseMmioStructures() {
doorbells_ = reinterpret_cast<XhciDoorbells*>(mmio_regions_.vaddr() +
capabilities_->doorbell_offset);
dbgln("Doorbells: {x}", (uint64_t)doorbells_);
return glcr::OK;
}
@ -265,6 +288,7 @@ void XhciDriver::HandleCommandCompletion(
case TrbType::AddressDevice:
dbgln("Device Addressed: {x}", slot);
dbgln("State: {x}", devices_[slot - 1].State());
Thread(configure_device, &devices_[slot - 1]);
break;
case TrbType::NoOpCommand:
dbgln("No-op Command Completed");
@ -275,10 +299,18 @@ void XhciDriver::HandleCommandCompletion(
}
}
void XhciDriver::HandleTransferCompletion(const XhciTrb& transfer_event_trb) {
uint8_t slot_id = transfer_event_trb.control >> 8;
uint8_t endpoint_id = transfer_event_trb.control & 0x1F;
uint64_t trb_phys = transfer_event_trb.parameter;
devices_[slot_id - 1].TransferComplete(endpoint_id, trb_phys);
}
void XhciDriver::InitializeSlot(uint8_t slot_index) {
// TODO: Consider making this array one longer and ignore the first value.
devices_[slot_index - 1].EnableAndInitializeDataStructures(
slot_index, &(device_context_base_array_[slot_index]));
slot_index, &(device_context_base_array_[slot_index]),
&doorbells_->doorbell[slot_index]);
XhciPort* port =
reinterpret_cast<XhciPort*>(reinterpret_cast<uint64_t>(operational_) +
0x400 + (0x10 * (slot_index - 1)));