//*****************************************************************************
//
// Open an instance of the hub driver. This is called when the USB host
// has enumerated a new hub device.
//
//*****************************************************************************
static void *
HubDriverOpen(tUSBHostDevice *psDevice)
{
tEndpointDescriptor *psEndpointDescriptor;
tInterfaceDescriptor *psInterface;
tUsbHubDescriptor sHubDesc;
bool bRetcode;
uint32_t ui32Loop;
//
// If we are already talking to a hub, fail the call. We only support
// a single hub.
//
if(g_sRootHub.ui32Flags & USBLIB_HUB_ACTIVE)
{
return(0);
}
//
// Get pointers to the device descriptors we need to look at.
//
psInterface = USBDescGetInterface(psDevice->psConfigDescriptor, 0, 0);
psEndpointDescriptor = USBDescGetInterfaceEndpoint(psInterface, 0,
psDevice->ui32ConfigDescriptorSize);
//
// If there are no endpoints, something is wrong since a hub must have
// a single INT endpoint for signaling.
//
if(psEndpointDescriptor == 0)
{
return 0;
}
//
// Make sure we really are talking to a hub.
//
if((psInterface->bInterfaceClass != USB_CLASS_HUB) ||
(psInterface->bInterfaceSubClass != 0))
{
//
// Something is wrong - this isn't a hub or, if it is, we don't
// understand the protocol it is using.
//
return(0);
}
//
// Remember that this is a high speed hub with either single or multiple
// transaction translators.
//
if(psInterface->bInterfaceProtocol == USB_HUB_PROTOCOL_SINGLE)
{
g_sRootHub.ui32Flags |= USBLIB_HUB_HS;
}
else if(psInterface->bInterfaceProtocol == USB_HUB_PROTOCOL_MULTI)
{
g_sRootHub.ui32Flags |= USBLIB_HUB_HS | USBLIB_HUB_MULTI_TT;
}
//
// Remember the device information for later.
//
g_sRootHub.psDevice = psDevice;
//
// A hub must support an interrupt endpoint so check this.
//
if((psEndpointDescriptor->bmAttributes & USB_EP_ATTR_TYPE_M) ==
USB_EP_ATTR_INT)
{
//
// The endpoint is the correct type. Is it an IN endpoint?
//
if(psEndpointDescriptor->bEndpointAddress & USB_EP_DESC_IN)
{
//
// Yes - all is well with the hub endpoint so allocate a pipe to
// handle traffic from the hub.
//
g_sRootHub.ui32IntInPipe = USBHCDPipeAlloc(0, USBHCD_PIPE_INTR_IN,
psDevice,
HubIntINCallback);
USBHCDPipeConfig(g_sRootHub.ui32IntInPipe,
psEndpointDescriptor->wMaxPacketSize,
psEndpointDescriptor->bInterval,
psEndpointDescriptor->bEndpointAddress &
USB_EP_DESC_NUM_M);
}
}
//
// Did we allocate the endpoint successfully?
//
if(!g_sRootHub.ui32IntInPipe)
{
//
// No - return an error.
//
return 0;
}
//
// Assuming we have a callback, call it to tell the owner that a hub is
// now connected.
//
if(g_sRootHub.pfnCallback != 0)
{
g_sRootHub.pfnCallback((void *)g_sRootHub.ui32CBData,
USB_EVENT_CONNECTED, (uint32_t)&g_sRootHub, 0);
}
//
// Get the hub descriptor and store information we'll need for later.
//
bRetcode = GetHubDescriptor(&sHubDesc);
if(bRetcode)
{
//
// We read the descriptor successfully so extract the parts we need.
//
g_sRootHub.ui8NumPorts = sHubDesc.bNbrPorts;
g_sRootHub.ui16HubCharacteristics = sHubDesc.wHubCharacteristics;
g_sRootHub.ui8NumPortsInUse =
(sHubDesc.bNbrPorts > MAX_USB_DEVICES) ? MAX_USB_DEVICES :
sHubDesc.bNbrPorts;
//
// The size of the status change report that the hub sends is dependent
// upon the number of ports that the hub supports. Calculate this by
// adding 1 to the number of ports (bit 0 of the report is the hub
// status, higher bits are one per port) then dividing by 8 (bits per
// byte) and rounding up.
//
g_sRootHub.ui8ReportSize = ((sHubDesc.bNbrPorts + 1) + 7) / 8;
//
// Enable power to all ports on the hub.
//
for(ui32Loop = 1; ui32Loop <= sHubDesc.bNbrPorts; ui32Loop++)
{
//
// Turn on power to this port.
//
HubSetPortFeature(&g_sRootHub, ui32Loop,
HUB_FEATURE_PORT_POWER);
}
//
// Clear out our port state structures.
//
for(ui32Loop = 0; ui32Loop < MAX_USB_DEVICES; ui32Loop++)
{
g_sRootHub.psPorts[ui32Loop].bChanged = false;
g_sRootHub.psPorts[ui32Loop].iState = ePortIdle;
}
}
else
{
//
// Oops - we can't read the hub descriptor! Tidy up and return
// an error.
//
USBHCDPipeFree(g_sRootHub.ui32IntInPipe);
g_sRootHub.pfnCallback = 0;
g_sRootHub.ui32Flags &= ~USBLIB_HUB_ACTIVE;
return(0);
}
//
// If we get here, all is well so remember that the hub is connected and
// active.
//
g_sRootHub.ui32Flags |= USBLIB_HUB_ACTIVE;
//
// Return our instance data pointer to the caller to use as a handle.
//
return((void *)&g_sRootHub);
}
uint8_t USBHub::Init(uint8_t parent, uint8_t port, bool lowspeed) {
uint8_t buf[32];
USB_DEVICE_DESCRIPTOR * udd = reinterpret_cast<USB_DEVICE_DESCRIPTOR*>(buf);
HubDescriptor* hd = reinterpret_cast<HubDescriptor*>(buf);
USB_CONFIGURATION_DESCRIPTOR * ucd = reinterpret_cast<USB_CONFIGURATION_DESCRIPTOR*>(buf);
uint8_t rcode;
UsbDevice *p = NULL;
EpInfo *oldep_ptr = NULL;
uint8_t len = 0;
uint16_t cd_len = 0;
//USBTRACE("\r\nHub Init Start ");
//D_PrintHex<uint8_t > (bInitState, 0x80);
AddressPool &addrPool = pUsb->GetAddressPool();
//switch (bInitState) {
// case 0:
if(bAddress)
return USB_ERROR_CLASS_INSTANCE_ALREADY_IN_USE;
// Get pointer to pseudo device with address 0 assigned
p = addrPool.GetUsbDevicePtr(0);
if(!p)
return USB_ERROR_ADDRESS_NOT_FOUND_IN_POOL;
if(!p->epinfo)
return USB_ERROR_EPINFO_IS_NULL;
// Save old pointer to EP_RECORD of address 0
oldep_ptr = p->epinfo;
// Temporary assign new pointer to epInfo to p->epinfo in order to avoid toggle inconsistence
p->epinfo = epInfo;
p->lowspeed = lowspeed;
// Get device descriptor
rcode = pUsb->getDevDescr(0, 0, 8, (uint8_t*)buf);
p->lowspeed = false;
if(!rcode)
len = (buf[0] > 32) ? 32 : buf[0];
if(rcode) {
// Restore p->epinfo
p->epinfo = oldep_ptr;
return rcode;
}
// Extract device class from device descriptor
// If device class is not a hub return
if(udd->bDeviceClass != 0x09)
return USB_DEV_CONFIG_ERROR_DEVICE_NOT_SUPPORTED;
// Allocate new address according to device class
bAddress = addrPool.AllocAddress(parent, (udd->bDeviceClass == 0x09) ? true : false, port);
if(!bAddress)
return USB_ERROR_OUT_OF_ADDRESS_SPACE_IN_POOL;
// Extract Max Packet Size from the device descriptor
epInfo[0].maxPktSize = udd->bMaxPacketSize0;
// Assign new address to the device
rcode = pUsb->setAddr(0, 0, bAddress);
if(rcode) {
// Restore p->epinfo
p->epinfo = oldep_ptr;
addrPool.FreeAddress(bAddress);
bAddress = 0;
return rcode;
}
//USBTRACE2("\r\nHub address: ", bAddress );
// Restore p->epinfo
p->epinfo = oldep_ptr;
if(len)
rcode = pUsb->getDevDescr(bAddress, 0, len, (uint8_t*)buf);
if(rcode)
goto FailGetDevDescr;
// Assign epInfo to epinfo pointer
rcode = pUsb->setEpInfoEntry(bAddress, 2, epInfo);
if(rcode)
goto FailSetDevTblEntry;
// bInitState = 1;
// case 1:
// Get hub descriptor
rcode = GetHubDescriptor(0, 8, buf);
if(rcode)
goto FailGetHubDescr;
// Save number of ports for future use
bNbrPorts = hd->bNbrPorts;
// bInitState = 2;
// case 2:
// Read configuration Descriptor in Order To Obtain Proper Configuration Value
rcode = pUsb->getConfDescr(bAddress, 0, 8, 0, buf);
if(!rcode) {
cd_len = ucd->wTotalLength;
rcode = pUsb->getConfDescr(bAddress, 0, cd_len, 0, buf);
}
if(rcode)
goto FailGetConfDescr;
// The following code is of no practical use in real life applications.
// It only intended for the usb protocol sniffer to properly parse hub-class requests.
{
uint8_t buf2[24];
rcode = pUsb->getConfDescr(bAddress, 0, buf[0], 0, buf2);
if(rcode)
goto FailGetConfDescr;
}
// Set Configuration Value
rcode = pUsb->setConf(bAddress, 0, buf[5]);
if(rcode)
goto FailSetConfDescr;
// bInitState = 3;
// case 3:
// Power on all ports
for(uint8_t j = 1; j <= bNbrPorts; j++)
SetPortFeature(HUB_FEATURE_PORT_POWER, j, 0); //HubPortPowerOn(j);
pUsb->SetHubPreMask();
bPollEnable = true;
// bInitState = 0;
//}
//bInitState = 0;
//USBTRACE("...OK\r\n");
return 0;
// Oleg, No debugging?? -- xxxajk
FailGetDevDescr:
goto Fail;
FailSetDevTblEntry:
goto Fail;
FailGetHubDescr:
goto Fail;
FailGetConfDescr:
goto Fail;
FailSetConfDescr:
goto Fail;
Fail:
USBTRACE("...FAIL\r\n");
return rcode;
}