275 lines
8 KiB
C++
275 lines
8 KiB
C++
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/* mbed USBHost Library
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* Copyright (c) 2006-2013 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "USBHostHub.h"
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#if MAX_HUB_NB
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#include "USBHost.h"
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#include "dbg.h"
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#define GET_STATUS 0x00
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#define CLEAR_FEATURE 0x01
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#define GET_STATE 0x02
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#define SET_FEATURE 0x03
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#define GET_DESCRIPTOR 0x06
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#define PORT_CONNECTION_FEATURE (0x00)
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#define PORT_ENABLE_FEATURE (0x01)
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#define PORT_RESET_FEATURE (0x04)
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#define PORT_POWER_FEATURE (0x08)
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#define C_PORT_CONNECTION_FEATURE (16)
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#define C_PORT_ENABLE_FEATURE (17)
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#define C_PORT_RESET_FEATURE (20)
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#define PORT_CONNECTION (1 << 0)
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#define PORT_ENABLE (1 << 1)
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#define PORT_SUSPEND (1 << 2)
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#define PORT_OVER_CURRENT (1 << 3)
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#define PORT_RESET (1 << 4)
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#define PORT_POWER (1 << 8)
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#define PORT_LOW_SPEED (1 << 9)
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#define C_PORT_CONNECTION (1 << 16)
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#define C_PORT_ENABLE (1 << 17)
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#define C_PORT_SUSPEND (1 << 18)
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#define C_PORT_OVER_CURRENT (1 << 19)
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#define C_PORT_RESET (1 << 20)
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USBHostHub::USBHostHub() {
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host = NULL;
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init();
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}
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void USBHostHub::init() {
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dev_connected = false;
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dev = NULL;
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int_in = NULL;
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dev_connected = false;
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hub_intf = -1;
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hub_device_found = false;
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nb_port = 0;
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hub_characteristics = 0;
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for (int i = 0; i < MAX_HUB_PORT; i++) {
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device_children[i] = NULL;
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}
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}
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void USBHostHub::setHost(USBHost * host_) {
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host = host_;
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}
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bool USBHostHub::connected()
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{
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return dev_connected;
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}
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bool USBHostHub::connect(USBDeviceConnected * dev)
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{
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if (dev_connected) {
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return true;
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}
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if(host->enumerate(dev, this)) {
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init();
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return false;
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}
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if (hub_device_found) {
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this->dev = dev;
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int_in = dev->getEndpoint(hub_intf, INTERRUPT_ENDPOINT, IN);
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if (!int_in) {
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init();
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return false;
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}
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USB_INFO("New HUB: VID:%04x PID:%04x [dev: %p - intf: %d]", dev->getVid(), dev->getPid(), dev, hub_intf);
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dev->setName("Hub", hub_intf);
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host->registerDriver(dev, hub_intf, this, &USBHostHub::disconnect);
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int_in->attach(this, &USBHostHub::rxHandler);
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// get HUB descriptor
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host->controlRead( dev,
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USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS,
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GET_DESCRIPTOR,
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0x29 << 8, 0, buf, sizeof(HubDescriptor));
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nb_port = buf[2];
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hub_characteristics = buf[3];
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USB_DBG("Hub has %d port", nb_port);
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for (uint8_t j = 1; j <= nb_port; j++) {
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setPortFeature(PORT_POWER_FEATURE, j);
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}
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wait_ms(buf[5]*2);
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host->interruptRead(dev, int_in, buf, 1, false);
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dev_connected = true;
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return true;
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}
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return false;
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}
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void USBHostHub::disconnect() {
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init();
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}
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/*virtual*/ void USBHostHub::setVidPid(uint16_t vid, uint16_t pid)
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{
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// we don't check VID/PID for MSD driver
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}
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/*virtual*/ bool USBHostHub::parseInterface(uint8_t intf_nb, uint8_t intf_class, uint8_t intf_subclass, uint8_t intf_protocol) //Must return true if the interface should be parsed
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{
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if ((hub_intf == -1) &&
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(intf_class == HUB_CLASS) &&
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(intf_subclass == 0) &&
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(intf_protocol == 0)) {
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hub_intf = intf_nb;
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return true;
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}
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return false;
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}
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/*virtual*/ bool USBHostHub::useEndpoint(uint8_t intf_nb, ENDPOINT_TYPE type, ENDPOINT_DIRECTION dir) //Must return true if the endpoint will be used
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{
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if (intf_nb == hub_intf) {
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if ((type == INTERRUPT_ENDPOINT) && (dir == IN)) {
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hub_device_found = true;
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return true;
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}
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}
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return false;
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}
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void USBHostHub::deviceConnected(USBDeviceConnected * dev) {
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device_children[dev->getPort() - 1] = dev;
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}
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void USBHostHub::deviceDisconnected(USBDeviceConnected * dev) {
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device_children[dev->getPort() - 1] = NULL;
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}
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void USBHostHub::hubDisconnected() {
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for (uint8_t i = 0; i < MAX_HUB_PORT; i++) {
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if (device_children[i] != NULL) {
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host->freeDevice(device_children[i]);
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}
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}
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}
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void USBHostHub::rxHandler() {
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uint32_t status;
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if (int_in) {
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if (int_in->getState() == USB_TYPE_IDLE) {
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for (int port = 1; port <= nb_port; port++) {
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status = getPortStatus(port);
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USB_DBG("[hub handler hub: %d] status port %d [hub: %p]: 0x%X", dev->getHub(), port, dev, status);
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// if connection status has changed
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if (status & C_PORT_CONNECTION) {
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if (status & PORT_CONNECTION) {
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USB_DBG("[hub handler hub: %d - port: %d] new device connected", dev->getHub(), port);
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host->deviceConnected(dev->getHub() + 1, port, status & PORT_LOW_SPEED, this);
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} else {
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USB_DBG("[hub handler hub: %d - port: %d] device disconnected", dev->getHub(), port);
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host->deviceDisconnected(dev->getHub() + 1, port, this, 0);
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}
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clearPortFeature(C_PORT_CONNECTION_FEATURE, port);
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}
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if (status & C_PORT_RESET) {
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clearPortFeature(C_PORT_RESET_FEATURE, port);
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}
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if (status & C_PORT_ENABLE) {
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clearPortFeature(C_PORT_ENABLE_FEATURE, port);
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}
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if ((status & PORT_OVER_CURRENT)) {
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USB_ERR("OVER CURRENT DETECTED\r\n");
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clearPortFeature(PORT_OVER_CURRENT, port);
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host->deviceDisconnected(dev->getHub() + 1, port, this, 0);
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}
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}
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}
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host->interruptRead(dev, int_in, buf, 1, false);
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}
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}
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void USBHostHub::portReset(uint8_t port) {
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// reset port
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uint32_t status;
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USB_DBG("reset port %d on hub: %p [this: %p]", port, dev, this)
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setPortFeature(PORT_RESET_FEATURE, port);
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#if defined(TARGET_RZ_A1H)
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Thread::wait(50); // Reset release waiting for Hi-Speed check.
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#endif
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while(1) {
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status = getPortStatus(port);
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if (status & (PORT_ENABLE | PORT_RESET))
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break;
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if (status & PORT_OVER_CURRENT) {
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USB_ERR("OVER CURRENT DETECTED\r\n");
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clearPortFeature(PORT_OVER_CURRENT, port);
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host->deviceDisconnected(dev->getHub() + 1, port, this, 0);
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break;
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}
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Thread::wait(10);
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}
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}
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void USBHostHub::setPortFeature(uint32_t feature, uint8_t port) {
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host->controlWrite( dev,
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USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT,
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SET_FEATURE,
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feature,
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port,
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NULL,
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0);
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}
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void USBHostHub::clearPortFeature(uint32_t feature, uint8_t port) {
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host->controlWrite( dev,
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USB_HOST_TO_DEVICE | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT,
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CLEAR_FEATURE,
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feature,
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port,
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NULL,
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0);
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}
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uint32_t USBHostHub::getPortStatus(uint8_t port) {
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uint32_t st;
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host->controlRead( dev,
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USB_DEVICE_TO_HOST | USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE | USB_RECIPIENT_ENDPOINT,
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GET_STATUS,
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0,
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port,
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(uint8_t *)&st,
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4);
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return st;
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}
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#endif
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