mbed-os/features/unsupported/USBHost/targets/TARGET_STM/USBEndpoint_STM.cpp

/* 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.
 */
#if defined(TARGET_STM) && defined(USBHOST_OTHER)

#include "dbg.h"
#include "USBEndpoint.h"
extern uint32_t HAL_HCD_HC_GetMaxPacket(HCD_HandleTypeDef *hhcd, uint8_t chn_num);
extern uint32_t HAL_HCD_HC_GetType(HCD_HandleTypeDef *hhcd, uint8_t chn_num);
extern void HAL_HCD_DisableInt(HCD_HandleTypeDef* hhcd, uint8_t chn_num);
extern void HAL_HCD_EnableInt(HCD_HandleTypeDef* hhcd, uint8_t chn_num);




void USBEndpoint::init(HCED * hced_, ENDPOINT_TYPE type_, ENDPOINT_DIRECTION dir_, uint32_t size, uint8_t ep_number, HCTD* td_list_[2])
{
    HCD_HandleTypeDef *hhcd;
    uint32_t *addr;

    hced = hced_;
    type = type_;
    dir = dir_;
    setup = (type == CONTROL_ENDPOINT) ? true : false;

    //TDs have been allocated by the host
    memcpy((HCTD**)td_list, td_list_, sizeof(HCTD*)*2); //TODO: Maybe should add a param for td_list size... at least a define
    memset(td_list_[0], 0, sizeof(HCTD));
    memset(td_list_[1], 0, sizeof(HCTD));

    td_list[0]->ep = this;
    td_list[1]->ep = this;

    address = (ep_number & 0x7F) | ((dir - 1) << 7);
    this->size = size;
    this->ep_number = ep_number;
    transfer_len = 0;
    transferred = 0;
    buf_start = 0;
    nextEp = NULL;

    td_current = td_list[0];
    td_next = td_list[1];
    /*  remove potential post pending from previous endpoint */
    ep_queue.get(0);
    intf_nb = 0;
    hhcd = (HCD_HandleTypeDef*)hced->hhcd;
    addr = &((uint32_t *)hhcd->pData)[hced->ch_num];
    *addr = 0;
    state = USB_TYPE_IDLE;
    speed =false;
}
void USBEndpoint::setSize(uint32_t size)
{
    this->size = size;
}


void USBEndpoint::setDeviceAddress(uint8_t addr)
{
    HCD_HandleTypeDef *hhcd;
    uint8_t hcd_speed = HCD_SPEED_FULL;
    /* fix me : small speed device with hub not supported
    if (this->speed) hcd_speed = HCD_SPEED_LOW; */
    if (this->speed) {
        USB_WARN("small speed device on hub not supported");
    }
    MBED_ASSERT(HAL_HCD_HC_Init((HCD_HandleTypeDef*)hced->hhcd,hced->ch_num, address, addr, hcd_speed,  type, size)!=HAL_BUSY);
    this->device_address = addr;

}

void USBEndpoint::setSpeed(uint8_t speed)
{
    this->speed = speed;
}



void USBEndpoint::setState(USB_TYPE st)
{
    /*  modify this state is possible only with a plug   */
    if (state == USB_TYPE_FREE) {
        return;
    }

    state = st;
    if (st == USB_TYPE_FREE) {
        HCD_HandleTypeDef *hhcd = (HCD_HandleTypeDef*)hced->hhcd;
        uint32_t *addr = &((uint32_t *)hhcd->pData)[hced->ch_num];
        if ((*addr) && (type != INTERRUPT_ENDPOINT)) {
            this->ep_queue.put((uint8_t*)1);
        }
        MBED_ASSERT(HAL_HCD_HC_Halt((HCD_HandleTypeDef*)hced->hhcd, hced->ch_num)!=HAL_BUSY);
        HAL_HCD_DisableInt((HCD_HandleTypeDef*)hced->hhcd, hced->ch_num);
        *addr = 0;

    }
    if (st == USB_TYPE_ERROR) {
        MBED_ASSERT(HAL_HCD_HC_Halt((HCD_HandleTypeDef*)hced->hhcd, hced->ch_num)!=HAL_BUSY);
        HAL_HCD_DisableInt((HCD_HandleTypeDef*)hced->hhcd, hced->ch_num);

    }
    if (st == USB_TYPE_ERROR) {
        uint8_t hcd_speed = HCD_SPEED_FULL;
        /* small speed device with hub not supported
           if (this->speed) hcd_speed = HCD_SPEED_LOW;*/
        MBED_ASSERT(HAL_HCD_HC_Init((HCD_HandleTypeDef*)hced->hhcd,hced->ch_num, address, 0, hcd_speed,  type, size)!=HAL_BUSY);
    }
}


extern uint32_t HAL_HCD_HC_GetMaxPacket(HCD_HandleTypeDef *hhcd, uint8_t chn_num);
extern uint32_t HAL_HCD_HC_GetType(HCD_HandleTypeDef *hhcd, uint8_t chn_num);


USB_TYPE USBEndpoint::queueTransfer()
{
    HCD_HandleTypeDef *hhcd = (HCD_HandleTypeDef*)hced->hhcd;
    uint32_t *addr = &((uint32_t *)hhcd->pData)[hced->ch_num];
    uint32_t type = HAL_HCD_HC_GetType(hhcd, hced->ch_num);
    uint32_t max_size =  HAL_HCD_HC_GetMaxPacket(hhcd, hced->ch_num);
    /*  if a packet is queue on disconnected ; no solution for now */
    if (state == USB_TYPE_FREE)  {
        td_current->state =  USB_TYPE_FREE;
        return USB_TYPE_FREE;
    }
    ep_queue.get(0);
    MBED_ASSERT(*addr ==0);
    transfer_len =   td_current->size <= max_size ? td_current->size : max_size;
    buf_start = (uint8_t *)td_current->currBufPtr;

    //Now add this free TD at this end of the queue
    state = USB_TYPE_PROCESSING;
    /*  one request */
    td_current->nextTD = (hcTd*)0;
#if defined(MAX_NYET_RETRY)
    td_current->retry = 0;
#endif
    td_current->setup = setup;
    *addr = (uint32_t)td_current;
    /*  dir /setup is inverted for ST */
    /* token is useful only ctrl endpoint */
    /*  last parameter is ping ? */
    MBED_ASSERT(HAL_HCD_HC_SubmitRequest((HCD_HandleTypeDef*)hced->hhcd, hced->ch_num, dir-1, type,!setup,(uint8_t*) td_current->currBufPtr, transfer_len, 0)==HAL_OK);
    HAL_HCD_EnableInt((HCD_HandleTypeDef*)hced->hhcd, hced->ch_num);

    return USB_TYPE_PROCESSING;
}

void USBEndpoint::unqueueTransfer(volatile HCTD * td)
{
    if (state==USB_TYPE_FREE) {
        return;
    }
    uint32_t *addr = &((uint32_t *)((HCD_HandleTypeDef*)hced->hhcd)->pData)[hced->ch_num];
    td->state=0;
    td->currBufPtr=0;
    td->size=0;
    td->nextTD=0;
    *addr = 0;
    td_current = td_next;
    td_next = td;
}

void USBEndpoint::queueEndpoint(USBEndpoint * ed)
{
    nextEp = ed;
}
#endif