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Kernel: Fix USB FS device default max packet size 

Apparently this is a common non spec compliant issue on many
controllers/devices.

thanks @sasdallas
This commit is contained in:
Bananymous 2025-08-08 17:39:50 +03:00
parent ee3f10313a
commit 7e472a9c1d
1 changed files with 11 additions and 2 deletions
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13
kernel/kernel/USB/XHCI/Device.cpp
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@ -40,10 +40,9 @@ namespace Kernel
switch (m_speed_class) switch (m_speed_class)
{ {
case USB::SpeedClass::LowSpeed: case USB::SpeedClass::LowSpeed:
case USB::SpeedClass::FullSpeed:
m_endpoints[0].max_packet_size = 8; m_endpoints[0].max_packet_size = 8;
is_ls_or_fs_device_on_hs_hub = m_info.parent_hub && (m_info.parent_hub->speed_class() == USB::SpeedClass::HighSpeed);
break; break;
case USB::SpeedClass::FullSpeed:
case USB::SpeedClass::HighSpeed: case USB::SpeedClass::HighSpeed:
m_endpoints[0].max_packet_size = 64; m_endpoints[0].max_packet_size = 64;
break; break;
@ -53,6 +52,16 @@ namespace Kernel
default: ASSERT_NOT_REACHED(); default: ASSERT_NOT_REACHED();
} }
switch (m_speed_class)
{
case USB::SpeedClass::LowSpeed:
case USB::SpeedClass::FullSpeed:
is_ls_or_fs_device_on_hs_hub = m_info.parent_hub && (m_info.parent_hub->speed_class() == USB::SpeedClass::HighSpeed);
break;
default:
break;
}
m_input_context = TRY(DMARegion::create(33 * context_size)); m_input_context = TRY(DMARegion::create(33 * context_size));
memset(reinterpret_cast<void*>(m_input_context->vaddr()), 0, m_input_context->size()); memset(reinterpret_cast<void*>(m_input_context->vaddr()), 0, m_input_context->size());