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Kernel: Support initializing USB 3 devices

This commit is contained in:
Bananymous 2024-11-21 13:40:16 +02:00
parent 8bf14d542e
commit 857b3e92f8
1 changed files with 12 additions and 11 deletions
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15
kernel/kernel/USB/XHCI/Controller.cpp
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@ -268,6 +268,7 @@ namespace Kernel
// read and clear needed change flags // read and clear needed change flags
const bool reset_change = op_port.portsc & XHCI::PORTSC::PRC; const bool reset_change = op_port.portsc & XHCI::PORTSC::PRC;
const bool connection_change = op_port.portsc & XHCI::PORTSC::CSC; const bool connection_change = op_port.portsc & XHCI::PORTSC::CSC;
const bool port_enabled = op_port.portsc & XHCI::PORTSC::PED;
op_port.portsc = XHCI::PORTSC::CSC | XHCI::PORTSC::PRC | XHCI::PORTSC::PP; op_port.portsc = XHCI::PORTSC::CSC | XHCI::PORTSC::PRC | XHCI::PORTSC::PP;
if (!(op_port.portsc & XHCI::PORTSC::CCS)) if (!(op_port.portsc & XHCI::PORTSC::CCS))
@ -284,18 +285,18 @@ namespace Kernel
switch (my_port.revision_major) switch (my_port.revision_major)
{ {
case 2: case 2:
if (!reset_change) // USB2 ports advance to Enabled state after a reset
{ if (port_enabled && reset_change)
break;
// reset port
if (connection_change) if (connection_change)
op_port.portsc = XHCI::PORTSC::PR | XHCI::PORTSC::PP; op_port.portsc = XHCI::PORTSC::PR | XHCI::PORTSC::PP;
continue; continue;
}
break;
case 3: case 3:
if (!connection_change) if (!connection_change || !port_enabled)
continue;
dprintln_if(DEBUG_XHCI, "USB 3 devices not supported");
continue; continue;
// USB3 ports advance to Enabled state automatically
break;
default: default:
continue; continue;
} }