include/hw/usb/msd.h

   1 /*
   2  * USB Mass Storage Device emulation
   3  *
   4  * Copyright (c) 2006 CodeSourcery.
   5  * Written by Paul Brook
   6  *
   7  * This code is licensed under the LGPL.
   8  */
   9
  10 #include "hw/usb.h"
  11 #include "hw/scsi/scsi.h"
  12
  13 enum USBMSDMode {
  14     USB_MSDM_CBW, /* Command Block.  */
  15     USB_MSDM_DATAOUT, /* Transfer data to device.  */
  16     USB_MSDM_DATAIN, /* Transfer data from device.  */
  17     USB_MSDM_CSW /* Command Status.  */
  18 };
  19
  20 struct usb_msd_csw {
  21     uint32_t sig;
  22     uint32_t tag;
  23     uint32_t residue;
  24     uint8_t status;
  25 };
  26
  27 struct MSDState {
  28     USBDevice dev;
  29     enum USBMSDMode mode;
  30     uint32_t scsi_off;
  31     uint32_t scsi_len;
  32     uint32_t data_len;
  33     struct usb_msd_csw csw;
  34     SCSIRequest *req;
  35     SCSIBus bus;
  36     /* For async completion.  */
  37     USBPacket *packet;
  38     /* usb-storage only */
  39     BlockConf conf;
  40     bool removable;
  41     bool commandlog;
  42     SCSIDevice *scsi_dev;
  43 };
  44
  45 typedef struct MSDState MSDState;
  46 #define TYPE_USB_STORAGE "usb-storage-dev"
  47 DECLARE_INSTANCE_CHECKER(MSDState, USB_STORAGE_DEV,
  48                          TYPE_USB_STORAGE)
  49
  50 void usb_msd_transfer_data(SCSIRequest *req, uint32_t len);
  51 void usb_msd_command_complete(SCSIRequest *req, size_t resid);
  52 void usb_msd_request_cancelled(SCSIRequest *req);
  53 void *usb_msd_load_request(QEMUFile *f, SCSIRequest *req);
  54 void usb_msd_handle_reset(USBDevice *dev);