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/*
* USB Mass Storage Device emulation
*
* Copyright (c) 2006 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the LGPL.
*/
#include "hw/usb.h"
#include "hw/scsi/scsi.h"
enum USBMSDMode {
USB_MSDM_CBW, /* Command Block. */
USB_MSDM_DATAOUT, /* Transfer data to device. */
USB_MSDM_DATAIN, /* Transfer data from device. */
USB_MSDM_CSW /* Command Status. */
};
struct QEMU_PACKED usb_msd_csw {
uint32_t sig;
uint32_t tag;
uint32_t residue;
uint8_t status;
};
struct MSDState {
USBDevice dev;
enum USBMSDMode mode;
uint32_t scsi_off;
uint32_t scsi_len;
uint32_t data_len;
struct usb_msd_csw csw;
SCSIRequest *req;
SCSIBus bus;
/* For async completion. */
USBPacket *packet;
/* usb-storage only */
BlockConf conf;
bool removable;
bool commandlog;
SCSIDevice *scsi_dev;
bool needs_reset;
};
typedef struct MSDState MSDState;
#define TYPE_USB_STORAGE "usb-storage-dev"
DECLARE_INSTANCE_CHECKER(MSDState, USB_STORAGE_DEV,
TYPE_USB_STORAGE)
void usb_msd_transfer_data(SCSIRequest *req, uint32_t len);
void usb_msd_command_complete(SCSIRequest *req, size_t resid);
void usb_msd_request_cancelled(SCSIRequest *req);
void *usb_msd_load_request(QEMUFile *f, SCSIRequest *req);
void usb_msd_handle_reset(USBDevice *dev);
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