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Code Issues Packages Projects Releases 6 Wiki Activity

machine/rp2: expose usb endpoint stall handling

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This commit is contained in:
Michael Smith
2025-04-16 21:16:51 -04:00
committed by Ron Evans
parent 0f06f59c6e
commit febb3906db
5 changed files with 74 additions and 12 deletions
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src/machine/usb.go
+16
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@@ -123,6 +123,7 @@ var (
usbTxHandler [usb.NumberOfEndpoints]func()
usbRxHandler [usb.NumberOfEndpoints]func([]byte)
usbSetupHandler [usb.NumberOfInterfaces]func(usb.Setup) bool
usbStallHandler [usb.NumberOfEndpoints]func(usb.Setup) bool
endPoints = []uint32{
usb.CONTROL_ENDPOINT: usb.ENDPOINT_TYPE_CONTROL,
@@ -212,6 +213,12 @@ func handleStandardSetup(setup usb.Setup) bool {
if setup.WValueL == 1 { // DEVICEREMOTEWAKEUP
isRemoteWakeUpEnabled = false
} else if setup.WValueL == 0 { // ENDPOINTHALT
if idx := setup.WIndex & 0x7F; idx < usb.NumberOfEndpoints && usbStallHandler[idx] != nil {
// Host has requested to clear an endpoint stall. If the request is addressed to
// an endpoint with a configured StallHandler, forward the message on.
// The 0x7F mask is used to clear the direction bit from the endpoint number
return usbStallHandler[idx](setup)
}
isEndpointHalt = false
}
SendZlp()
@@ -221,6 +228,12 @@ func handleStandardSetup(setup usb.Setup) bool {
if setup.WValueL == 1 { // DEVICEREMOTEWAKEUP
isRemoteWakeUpEnabled = true
} else if setup.WValueL == 0 { // ENDPOINTHALT
if idx := setup.WIndex & 0x7F; idx < usb.NumberOfEndpoints && usbStallHandler[idx] != nil {
// Host has requested to stall an endpoint. If the request is addressed to
// an endpoint with a configured StallHandler, forward the message on.
// The 0x7F mask is used to clear the direction bit from the endpoint number
return usbStallHandler[idx](setup)
}
isEndpointHalt = true
}
SendZlp()
@@ -320,6 +333,9 @@ func ConfigureUSBEndpoint(desc descriptor.Descriptor, epSettings []usb.EndpointC
usbRxHandler[ep.Index] = ep.RxHandler
}
}
if ep.StallHandler != nil {
usbStallHandler[ep.Index] = ep.StallHandler
}
}
for _, s := range setup {