/* USB EHCI Host for Teensy 3.6 * Copyright 2017 Paul Stoffregen (paul@pjrc.com) * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include #include "USBHost.h" USBHub::USBHub() { // TODO: free Device_t, Pipe_t & Transfer_t we will need driver_ready_for_device(this); } bool USBHub::claim(Device_t *dev, int type, const uint8_t *descriptors) { // only claim entire device, never at interface level if (type != 0) return false; Serial.print("USBHub claim_device this="); Serial.println((uint32_t)this, HEX); // check for HUB type if (dev->bDeviceClass != 9 || dev->bDeviceSubClass != 0) return false; // protocol must be 0=FS, 1=HS Single-TT, or 2=HS Multi-TT if (dev->bDeviceProtocol > 2) return false; // check for endpoint descriptor if (descriptors[9] != 7 || descriptors[10] != 5) return false; // endpoint must be IN direction if ((descriptors[11] & 0xF0) != 0x80) return false; // endpoint type must be interrupt if (descriptors[12] != 3) return false; // get the endpoint number, must not be zero endpoint = descriptors[11] & 0x0F; if (endpoint == 0) return false; // get the maximum packet size uint32_t maxsize = descriptors[13] | (descriptors[14] << 8); if (maxsize == 0) return false; if (maxsize > 1) return false; // do hub chips with > 7 ports exist? Serial.println(descriptors[9]); Serial.println(descriptors[10]); Serial.println(descriptors[11], HEX); Serial.println(maxsize); // bDeviceProtocol = 0 is full speed // bDeviceProtocol = 1 is high speed single TT // bDeviceProtocol = 2 is high speed multiple TT Serial.print("bDeviceClass = "); Serial.println(dev->bDeviceClass); Serial.print("bDeviceSubClass = "); Serial.println(dev->bDeviceSubClass); Serial.print("bDeviceProtocol = "); Serial.println(dev->bDeviceProtocol); changepipe = NULL; changebits = 0; state = 0; mk_setup(setup, 0xA0, 6, 0x2900, 0, sizeof(hub_desc)); queue_Control_Transfer(dev, &setup, hub_desc, this); return true; } void USBHub::poweron(uint32_t port) { mk_setup(setup, 0x23, 3, 8, port, 0); queue_Control_Transfer(device, &setup, NULL, this); } void USBHub::getstatus(uint32_t port) { if (port == 0) { mk_setup(setup, 0xA0, 0, 0, port, 4); // get hub status } else { mk_setup(setup, 0xA3, 0, 0, port, 4); // get port status } queue_Control_Transfer(device, &setup, &status, this); } void USBHub::clearstatus(uint32_t port) { if (port == 0) { mk_setup(setup, 0x20, 1, 0x10, port, 0); // clear hub status } else { mk_setup(setup, 0x23, 1, 0x10, port, 0); // clear port status } queue_Control_Transfer(device, &setup, NULL, this); } bool USBHub::control(const Transfer_t *transfer) { Serial.println("USBHub control callback"); print_hexbytes(transfer->buffer, transfer->length); if (state == 0) { // read hub descriptor to learn hub's capabilities if (transfer->buffer != hub_desc) return false; // Hub Descriptor, USB 2.0, 11.23.2.1 page 417 if (hub_desc[0] == 9 && hub_desc[1] == 0x29) { numports = hub_desc[2]; characteristics = hub_desc[3]; powertime = hub_desc[5]; // TODO: do we need to use the DeviceRemovable // bits to mke synthetic device connect events? Serial.print("Hub has "); Serial.print(numports); Serial.println(" ports"); state = 1; poweron(1); } } else if (state < numports) { // turn on power to all ports poweron(++state); } else if (state == numports) { Serial.println("power turned on to all ports"); Serial.print("device addr = "); Serial.println(device->address); changepipe = new_Pipe(device, 3, endpoint, 1, 1, 512); Serial.print("pipe cap1 = "); Serial.println(changepipe->qh.capabilities[0], HEX); changepipe->callback_function = callback; queue_Data_Transfer(changepipe, &changebits, 1, this); state = 255; } else if (state == 255) { // up and running... switch (setup.word1) { case 0x000000A0: // get hub status Serial.println("New Hub Status"); clearstatus(0); return true; case 0x000000A3: // get port status Serial.print("New Port Status, port="); Serial.println(setup.wIndex); clearstatus(setup.wIndex); return true; case 0x00100120: // clear hub status Serial.println("Hub Status Cleared"); changebits &= ~1; break; case 0x00100123: // clear port status Serial.print("Port Status Cleared, port="); Serial.println(setup.wIndex); changebits &= ~(1 << setup.wIndex); break; } update_status(); } return true; } void USBHub::callback(const Transfer_t *transfer) { Serial.println("HUB Callback (static)"); if (transfer->driver) ((USBHub *)(transfer->driver))->status_change(transfer); } void USBHub::status_change(const Transfer_t *transfer) { Serial.println("HUB Callback (member)"); Serial.print("status = "); Serial.println(changebits, HEX); // TODO: do something with the status change info update_status(); queue_Data_Transfer(changepipe, &changebits, 1, this); } void USBHub::update_status() { uint32_t i, mask; for (i=0, mask=1; i <= numports; i++, mask <<= 1) { if (changebits & mask) { getstatus(i); return; } } } /* config descriptor from a Multi-TT hub 09 02 29 00 01 01 00 E0 32 09 04 00 00 01 09 00 01 00 07 05 81 03 01 00 0C 09 04 00 01 01 09 00 02 00 07 05 81 03 01 00 0C */