File content as of revision 1:c072d9e580b0:

/* 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.
 */

#ifndef USBHOSTMSD_H
#define USBHOSTMSD_H

#if 0
#define USB_DBG(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");} while(0);
#else
#define USB_DBG(...)  while(0);
#endif

#define USB_DBG2(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");} while(0);

#if 1
#define USB_INFO(...) do{fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");}while(0);
#else
#define USB_INFO(...)  while(0);
#endif

//#include "USBHostConf.h"
enum USB_TYPE {
    USB_TYPE_OK = 0,
    // completion code
    USB_TYPE_STALL_ERROR = 4,
    // general usb state
    USB_TYPE_IDLE = 16,
    USB_TYPE_ERROR = 18,
};

//  ----------- Control RequestType Fields  ----------- 
#define  USB_DEVICE_TO_HOST         0x80
#define  USB_HOST_TO_DEVICE         0x00
#define  USB_REQUEST_TYPE_CLASS     0x20
#define  USB_REQUEST_TYPE_STANDARD  0x00
#define  USB_RECIPIENT_DEVICE       0x00
#define  USB_RECIPIENT_INTERFACE    0x01
#define  USB_RECIPIENT_ENDPOINT     0x02

// -------------- USB Standard Requests  --------------
#define  CLEAR_FEATURE              0x01

#include "USBHost.h"
#include "FATFileSystem.h"

class USBDeviceConnected { //dummy
};

struct USBEndpoint { // dummy
    void setState(uint8_t st){};
    uint8_t getAddress(){ return 0; };
};

/** 
 * A class to communicate a USB flash disk
 */
class USBHostMSD : public FATFileSystem {
public:
    /**
    * Constructor
    *
    * @param rootdir mount name
    */
    USBHostMSD(const char * rootdir);

    /**
    * Check if a MSD device is connected
    *
    * @return true if a MSD device is connected
    */
    bool connected();

    /**
     * Try to connect to a MSD device
     *
     * @return true if connection was successful
     */
    bool connect();

protected:

    // From FATFileSystem
    virtual int disk_initialize();
    virtual int disk_status() {return 0;};
    virtual int disk_read(uint8_t * buffer, uint64_t sector);
    virtual int disk_write(const uint8_t * buffer, uint64_t sector);
    virtual int disk_sync() {return 0;};
    virtual uint64_t disk_sectors();

private:
    USBHost * host;
    USBDeviceConnected * dev;
    bool dev_connected;
    USBEndpoint * bulk_in;
    USBEndpoint * bulk_out;
    uint8_t nb_ep;

    // Bulk-only CBW
    typedef __packed struct {
        uint32_t Signature;
        uint32_t Tag;
        uint32_t DataLength;
        uint8_t  Flags;
        uint8_t  LUN;
        uint8_t  CBLength;
        uint8_t  CB[16];
    } CBW;

    // Bulk-only CSW
    typedef __packed struct {
        uint32_t Signature;
        uint32_t Tag;
        uint32_t DataResidue;
        uint8_t  Status;
    } CSW;

    CBW cbw;
    CSW csw;

    int SCSITransfer(uint8_t * cmd, uint8_t cmd_len, int flags, uint8_t * data, uint32_t transfer_len);
    int testUnitReady();
    int readCapacity();
    int inquiry(uint8_t lun, uint8_t page_code);
    int SCSIRequestSense();
    int dataTransfer(uint8_t * buf, uint32_t block, uint8_t nbBlock, int direction);
    int checkResult(uint8_t res, USBEndpoint * ep);
    int getMaxLun();

    int blockSize;
    uint64_t blockCount;

    int msd_intf;
    bool msd_device_found;
    bool disk_init;
    
    void init();

    // KL46Z-USBHost interface
    USB_TYPE controlRead(USBDeviceConnected* dev, uint8_t requestType, uint8_t request, uint32_t value, uint32_t index, uint8_t * buf, uint32_t len) {
        SETUP_PACKET setup = {requestType, request, value, index};
        int result = host->ControlRead(&setup, buf, len);
        USB_DBG2("result=%d %02x", result, host->LastStatus);
        return (result >= 0) ? USB_TYPE_OK : USB_TYPE_ERROR;
    }

    USB_TYPE controlWrite(USBDeviceConnected* dev, uint8_t requestType, uint8_t request, uint32_t value, uint32_t index, uint8_t * buf, uint32_t len) {
        SETUP_PACKET setup = {requestType, request, value, index};
        int result = host->ControlWrite(&setup, buf, len);
        USB_DBG2("result=%d %02x", result, host->LastStatus);
        return (result >= 0) ? USB_TYPE_OK : USB_TYPE_ERROR;
    }
    
    USB_TYPE bulkRead(USBDeviceConnected * dev, USBEndpoint * ep, uint8_t * buf, uint32_t len, bool blocking = true) {
        for(int retry = 2; retry > 0; retry--) {
            int result = host->BulkRead(buf, len);
            if (result >= 0) {
                return USB_TYPE_OK;
            }
            USB_DBG2("result=%d %02x", result, host->LastStatus);
            if (host->LastStatus != Bus_Timeout) {
                break;
            }
            wait_ms(10);
        }
        return USB_TYPE_ERROR;
    }
    
    USB_TYPE bulkWrite(USBDeviceConnected * dev, USBEndpoint * ep, uint8_t * buf, uint32_t len, bool blocking = true) {
        int result = host->BulkWrite(buf, len);
        if (result >= 0) {
            return USB_TYPE_OK;
        }
        USB_DBG2("result=%d %02x", result, host->LastStatus);
        return USB_TYPE_ERROR;
    }
};

#endif