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