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Kernel: Don't parse xHCI custom slot_types 

xHCI spec mandates that slot_type for USB protocol is 0.
This commit is contained in:
Bananymous 2025-02-06 21:41:44 +02:00
parent 242ed4a3c2
commit 6768a18475
2 changed files with 10 additions and 5 deletions
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1
kernel/include/kernel/USB/XHCI/Controller.h
View File

@ -24,7 +24,6 @@ namespace Kernel
{
uint8_t revision_major { 0 };
uint8_t revision_minor { 0 };
uint8_t slot_type { 0 };
uint8_t slot_id { 0 };
};

14
kernel/kernel/USB/XHCI/Controller.cpp
View File

@ -185,6 +185,12 @@ namespace Kernel
return BAN::Error::from_errno(EFAULT);
}
if (protocol.protocol_slot_type != 0)
{
dwarnln("Invalid slot type specified in SupportedProtocols");
return BAN::Error::from_errno(EFAULT);
}
if (protocol.protocol_speed_id_count != 0)
overrides_speed_ids = true;
@ -193,7 +199,6 @@ namespace Kernel
auto& port = m_ports[protocol.compatible_port_offset + i - 1];
port.revision_major = protocol.major_revision;
port.revision_minor = protocol.minor_revision;
port.slot_type = protocol.protocol_slot_type;
}
}
@ -377,13 +382,14 @@ namespace Kernel
XHCI::TRB enable_slot { .enable_slot_command {} };
enable_slot.enable_slot_command.trb_type = XHCI::TRBType::EnableSlotCommand;
enable_slot.enable_slot_command.slot_type = my_port.slot_type;
// 7.2.2.1.4: The Protocol Slot Type field of a USB3 or USB2 xHCI Supported Protocol Capability shall be set to ‘0’.
enable_slot.enable_slot_command.slot_type = 0;
auto result = TRY(send_command(enable_slot));
uint8_t slot_id = result.command_completion_event.slot_id;
const uint8_t slot_id = result.command_completion_event.slot_id;
if (slot_id == 0 || slot_id > capability_regs().hcsparams1.max_slots)
{
dwarnln("EnableSlot gave an invalid slot {}", slot_id);
dwarnln("EnableSlotCommand returned an invalid slot {}", slot_id);
return BAN::Error::from_errno(EFAULT);
}
dprintln_if(DEBUG_XHCI, "allocated slot {} for port {}", slot_id, port_index + 1);