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qemu/hw/usb/dev-storage.c
Gerd Hoffmann 4084e35068 usb: fix storage regression 
Fix the contition to figure whenever we need to wait for more data or
not.  Simply check the mode, if we are not in DATAIN state any more we
are done already and don't need to go ASYNC.

Fixes: 7ad3d51ebb ("usb: add short-packet handling to usb-storage driver")
Reported-by: Sai Pavan Boddu <saipava@xilinx.com>
Tested-by: Paul Zimmerman <pauldzim@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200713062712.1476-1-kraxel@redhat.com
2020-07-16 10:20:27 +02:00

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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 "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "hw/usb.h"
#include "desc.h"
#include "hw/qdev-properties.h"
#include "hw/scsi/scsi.h"
#include "migration/vmstate.h"
#include "sysemu/sysemu.h"
#include "sysemu/block-backend.h"
#include "qapi/visitor.h"
#include "qemu/cutils.h"
//#define DEBUG_MSD
#ifdef DEBUG_MSD
#define DPRINTF(fmt, ...) \
do { printf("usb-msd: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) do {} while(0)
#endif
/* USB requests. */
#define MassStorageReset 0xff
#define GetMaxLun 0xfe
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 usb_msd_csw {
uint32_t sig;
uint32_t tag;
uint32_t residue;
uint8_t status;
};
typedef struct {
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;
uint32_t removable;
SCSIDevice *scsi_dev;
} MSDState;
#define TYPE_USB_STORAGE "usb-storage-dev"
#define USB_STORAGE_DEV(obj) OBJECT_CHECK(MSDState, (obj), TYPE_USB_STORAGE)
struct usb_msd_cbw {
uint32_t sig;
uint32_t tag;
uint32_t data_len;
uint8_t flags;
uint8_t lun;
uint8_t cmd_len;
uint8_t cmd[16];
};
enum {
STR_MANUFACTURER = 1,
STR_PRODUCT,
STR_SERIALNUMBER,
STR_CONFIG_FULL,
STR_CONFIG_HIGH,
STR_CONFIG_SUPER,
};
static const USBDescStrings desc_strings = {
[STR_MANUFACTURER] = "QEMU",
[STR_PRODUCT] = "QEMU USB HARDDRIVE",
[STR_SERIALNUMBER] = "1",
[STR_CONFIG_FULL] = "Full speed config (usb 1.1)",
[STR_CONFIG_HIGH] = "High speed config (usb 2.0)",
[STR_CONFIG_SUPER] = "Super speed config (usb 3.0)",
};
static const USBDescIface desc_iface_full = {
.bInterfaceNumber = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_MASS_STORAGE,
.bInterfaceSubClass = 0x06, /* SCSI */
.bInterfaceProtocol = 0x50, /* Bulk */
.eps = (USBDescEndpoint[]) {
{
.bEndpointAddress = USB_DIR_IN | 0x01,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 64,
},{
.bEndpointAddress = USB_DIR_OUT | 0x02,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 64,
},
}
};
static const USBDescDevice desc_device_full = {
.bcdUSB = 0x0200,
.bMaxPacketSize0 = 8,
.bNumConfigurations = 1,
.confs = (USBDescConfig[]) {
{
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = STR_CONFIG_FULL,
.bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
.nif = 1,
.ifs = &desc_iface_full,
},
},
};
static const USBDescIface desc_iface_high = {
.bInterfaceNumber = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_MASS_STORAGE,
.bInterfaceSubClass = 0x06, /* SCSI */
.bInterfaceProtocol = 0x50, /* Bulk */
.eps = (USBDescEndpoint[]) {
{
.bEndpointAddress = USB_DIR_IN | 0x01,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 512,
},{
.bEndpointAddress = USB_DIR_OUT | 0x02,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 512,
},
}
};
static const USBDescDevice desc_device_high = {
.bcdUSB = 0x0200,
.bMaxPacketSize0 = 64,
.bNumConfigurations = 1,
.confs = (USBDescConfig[]) {
{
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = STR_CONFIG_HIGH,
.bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
.nif = 1,
.ifs = &desc_iface_high,
},
},
};
static const USBDescIface desc_iface_super = {
.bInterfaceNumber = 0,
.bNumEndpoints = 2,
.bInterfaceClass = USB_CLASS_MASS_STORAGE,
.bInterfaceSubClass = 0x06, /* SCSI */
.bInterfaceProtocol = 0x50, /* Bulk */
.eps = (USBDescEndpoint[]) {
{
.bEndpointAddress = USB_DIR_IN | 0x01,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 1024,
.bMaxBurst = 15,
},{
.bEndpointAddress = USB_DIR_OUT | 0x02,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
.wMaxPacketSize = 1024,
.bMaxBurst = 15,
},
}
};
static const USBDescDevice desc_device_super = {
.bcdUSB = 0x0300,
.bMaxPacketSize0 = 9,
.bNumConfigurations = 1,
.confs = (USBDescConfig[]) {
{
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = STR_CONFIG_SUPER,
.bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
.nif = 1,
.ifs = &desc_iface_super,
},
},
};
static const USBDesc desc = {
.id = {
.idVendor = 0x46f4, /* CRC16() of "QEMU" */
.idProduct = 0x0001,
.bcdDevice = 0,
.iManufacturer = STR_MANUFACTURER,
.iProduct = STR_PRODUCT,
.iSerialNumber = STR_SERIALNUMBER,
},
.full = &desc_device_full,
.high = &desc_device_high,
.super = &desc_device_super,
.str = desc_strings,
};
static void usb_msd_copy_data(MSDState *s, USBPacket *p)
{
uint32_t len;
len = p->iov.size - p->actual_length;
if (len > s->scsi_len)
len = s->scsi_len;
usb_packet_copy(p, scsi_req_get_buf(s->req) + s->scsi_off, len);
s->scsi_len -= len;
s->scsi_off += len;
if (len > s->data_len) {
len = s->data_len;
}
s->data_len -= len;
if (s->scsi_len == 0 || s->data_len == 0) {
scsi_req_continue(s->req);
}
}
static void usb_msd_send_status(MSDState *s, USBPacket *p)
{
int len;
DPRINTF("Command status %d tag 0x%x, len %zd\n",
s->csw.status, le32_to_cpu(s->csw.tag), p->iov.size);
assert(s->csw.sig == cpu_to_le32(0x53425355));
len = MIN(sizeof(s->csw), p->iov.size);
usb_packet_copy(p, &s->csw, len);
memset(&s->csw, 0, sizeof(s->csw));
}
static void usb_msd_packet_complete(MSDState *s)
{
USBPacket *p = s->packet;
/* Set s->packet to NULL before calling usb_packet_complete
because another request may be issued before
usb_packet_complete returns. */
DPRINTF("Packet complete %p\n", p);
s->packet = NULL;
usb_packet_complete(&s->dev, p);
}
static void usb_msd_transfer_data(SCSIRequest *req, uint32_t len)
{
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent);
USBPacket *p = s->packet;
assert((s->mode == USB_MSDM_DATAOUT) == (req->cmd.mode == SCSI_XFER_TO_DEV));
s->scsi_len = len;
s->scsi_off = 0;
if (p) {
usb_msd_copy_data(s, p);
p = s->packet;
if (p && p->actual_length == p->iov.size) {
p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */
usb_msd_packet_complete(s);
}
}
}
static void usb_msd_command_complete(SCSIRequest *req, uint32_t status, size_t resid)
{
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent);
USBPacket *p = s->packet;
DPRINTF("Command complete %d tag 0x%x\n", status, req->tag);
s->csw.sig = cpu_to_le32(0x53425355);
s->csw.tag = cpu_to_le32(req->tag);
s->csw.residue = cpu_to_le32(s->data_len);
s->csw.status = status != 0;
if (s->packet) {
if (s->data_len == 0 && s->mode == USB_MSDM_DATAOUT) {
/* A deferred packet with no write data remaining must be
the status read packet. */
usb_msd_send_status(s, p);
s->mode = USB_MSDM_CBW;
} else if (s->mode == USB_MSDM_CSW) {
usb_msd_send_status(s, p);
s->mode = USB_MSDM_CBW;
} else {
if (s->data_len) {
int len = (p->iov.size - p->actual_length);
usb_packet_skip(p, len);
if (len > s->data_len) {
len = s->data_len;
}
s->data_len -= len;
}
if (s->data_len == 0) {
s->mode = USB_MSDM_CSW;
}
}
p->status = USB_RET_SUCCESS; /* Clear previous ASYNC status */
usb_msd_packet_complete(s);
} else if (s->data_len == 0) {
s->mode = USB_MSDM_CSW;
}
scsi_req_unref(req);
s->req = NULL;
}
static void usb_msd_request_cancelled(SCSIRequest *req)
{
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent);
if (req == s->req) {
scsi_req_unref(s->req);
s->req = NULL;
s->scsi_len = 0;
}
}
static void usb_msd_handle_reset(USBDevice *dev)
{
MSDState *s = (MSDState *)dev;
DPRINTF("Reset\n");
if (s->req) {
scsi_req_cancel(s->req);
}
assert(s->req == NULL);
if (s->packet) {
s->packet->status = USB_RET_STALL;
usb_msd_packet_complete(s);
}
s->mode = USB_MSDM_CBW;
}
static void usb_msd_handle_control(USBDevice *dev, USBPacket *p,
int request, int value, int index, int length, uint8_t *data)
{
MSDState *s = (MSDState *)dev;
SCSIDevice *scsi_dev;
int ret, maxlun;
ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
if (ret >= 0) {
return;
}
switch (request) {
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
break;
/* Class specific requests. */
case ClassInterfaceOutRequest | MassStorageReset:
/* Reset state ready for the next CBW. */
s->mode = USB_MSDM_CBW;
break;
case ClassInterfaceRequest | GetMaxLun:
maxlun = 0;
for (;;) {
scsi_dev = scsi_device_find(&s->bus, 0, 0, maxlun+1);
if (scsi_dev == NULL) {
break;
}
if (scsi_dev->lun != maxlun+1) {
break;
}
maxlun++;
}
DPRINTF("MaxLun %d\n", maxlun);
data[0] = maxlun;
p->actual_length = 1;
break;
default:
p->status = USB_RET_STALL;
break;
}
}
static void usb_msd_cancel_io(USBDevice *dev, USBPacket *p)
{
MSDState *s = USB_STORAGE_DEV(dev);
assert(s->packet == p);
s->packet = NULL;
if (s->req) {
scsi_req_cancel(s->req);
}
}
static void usb_msd_handle_data(USBDevice *dev, USBPacket *p)
{
MSDState *s = (MSDState *)dev;
uint32_t tag;
struct usb_msd_cbw cbw;
uint8_t devep = p->ep->nr;
SCSIDevice *scsi_dev;
uint32_t len;
switch (p->pid) {
case USB_TOKEN_OUT:
if (devep != 2)
goto fail;
switch (s->mode) {
case USB_MSDM_CBW:
if (p->iov.size != 31) {
error_report("usb-msd: Bad CBW size");
goto fail;
}
usb_packet_copy(p, &cbw, 31);
if (le32_to_cpu(cbw.sig) != 0x43425355) {
error_report("usb-msd: Bad signature %08x",
le32_to_cpu(cbw.sig));
goto fail;
}
DPRINTF("Command on LUN %d\n", cbw.lun);
scsi_dev = scsi_device_find(&s->bus, 0, 0, cbw.lun);
if (scsi_dev == NULL) {
error_report("usb-msd: Bad LUN %d", cbw.lun);
goto fail;
}
tag = le32_to_cpu(cbw.tag);
s->data_len = le32_to_cpu(cbw.data_len);
if (s->data_len == 0) {
s->mode = USB_MSDM_CSW;
} else if (cbw.flags & 0x80) {
s->mode = USB_MSDM_DATAIN;
} else {
s->mode = USB_MSDM_DATAOUT;
}
DPRINTF("Command tag 0x%x flags %08x len %d data %d\n",
tag, cbw.flags, cbw.cmd_len, s->data_len);
assert(le32_to_cpu(s->csw.residue) == 0);
s->scsi_len = 0;
s->req = scsi_req_new(scsi_dev, tag, cbw.lun, cbw.cmd, NULL);
#ifdef DEBUG_MSD
scsi_req_print(s->req);
#endif
len = scsi_req_enqueue(s->req);
if (len) {
scsi_req_continue(s->req);
}
break;
case USB_MSDM_DATAOUT:
DPRINTF("Data out %zd/%d\n", p->iov.size, s->data_len);
if (p->iov.size > s->data_len) {
goto fail;
}
if (s->scsi_len) {
usb_msd_copy_data(s, p);
}
if (le32_to_cpu(s->csw.residue)) {
int len = p->iov.size - p->actual_length;
if (len) {
usb_packet_skip(p, len);
if (len > s->data_len) {
len = s->data_len;
}
s->data_len -= len;
if (s->data_len == 0) {
s->mode = USB_MSDM_CSW;
}
}
}
if (p->actual_length < p->iov.size) {
DPRINTF("Deferring packet %p [wait data-out]\n", p);
s->packet = p;
p->status = USB_RET_ASYNC;
}
break;
default:
DPRINTF("Unexpected write (len %zd)\n", p->iov.size);
goto fail;
}
break;
case USB_TOKEN_IN:
if (devep != 1)
goto fail;
switch (s->mode) {
case USB_MSDM_DATAOUT:
if (s->data_len != 0 || p->iov.size < 13) {
goto fail;
}
/* Waiting for SCSI write to complete. */
s->packet = p;
p->status = USB_RET_ASYNC;
break;
case USB_MSDM_CSW:
if (p->iov.size < 13) {
goto fail;
}
if (s->req) {
/* still in flight */
DPRINTF("Deferring packet %p [wait status]\n", p);
s->packet = p;
p->status = USB_RET_ASYNC;
} else {
usb_msd_send_status(s, p);
s->mode = USB_MSDM_CBW;
}
break;
case USB_MSDM_DATAIN:
DPRINTF("Data in %zd/%d, scsi_len %d\n",
p->iov.size, s->data_len, s->scsi_len);
if (s->scsi_len) {
usb_msd_copy_data(s, p);
}
if (le32_to_cpu(s->csw.residue)) {
int len = p->iov.size - p->actual_length;
if (len) {
usb_packet_skip(p, len);
if (len > s->data_len) {
len = s->data_len;
}
s->data_len -= len;
if (s->data_len == 0) {
s->mode = USB_MSDM_CSW;
}
}
}
if (p->actual_length < p->iov.size && s->mode == USB_MSDM_DATAIN) {
DPRINTF("Deferring packet %p [wait data-in]\n", p);
s->packet = p;
p->status = USB_RET_ASYNC;
}
break;
default:
DPRINTF("Unexpected read (len %zd)\n", p->iov.size);
goto fail;
}
break;
default:
DPRINTF("Bad token\n");
fail:
p->status = USB_RET_STALL;
break;
}
}
static void *usb_msd_load_request(QEMUFile *f, SCSIRequest *req)
{
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent);
/* nothing to load, just store req in our state struct */
assert(s->req == NULL);
scsi_req_ref(req);
s->req = req;
return NULL;
}
static const struct SCSIBusInfo usb_msd_scsi_info_storage = {
.tcq = false,
.max_target = 0,
.max_lun = 0,
.transfer_data = usb_msd_transfer_data,
.complete = usb_msd_command_complete,
.cancel = usb_msd_request_cancelled,
.load_request = usb_msd_load_request,
};
static const struct SCSIBusInfo usb_msd_scsi_info_bot = {
.tcq = false,
.max_target = 0,
.max_lun = 15,
.transfer_data = usb_msd_transfer_data,
.complete = usb_msd_command_complete,
.cancel = usb_msd_request_cancelled,
.load_request = usb_msd_load_request,
};
static void usb_msd_storage_realize(USBDevice *dev, Error **errp)
{
MSDState *s = USB_STORAGE_DEV(dev);
BlockBackend *blk = s->conf.blk;
SCSIDevice *scsi_dev;
if (!blk) {
error_setg(errp, "drive property not set");
return;
}
if (!blkconf_blocksizes(&s->conf, errp)) {
return;
}
if (!blkconf_apply_backend_options(&s->conf, blk_is_read_only(blk), true,
errp)) {
return;
}
/*
* Hack alert: this pretends to be a block device, but it's really
* a SCSI bus that can serve only a single device, which it
* creates automatically. But first it needs to detach from its
* blockdev, or else scsi_bus_legacy_add_drive() dies when it
* attaches again. We also need to take another reference so that
* blk_detach_dev() doesn't free blk while we still need it.
*
* The hack is probably a bad idea.
*/
blk_ref(blk);
blk_detach_dev(blk, DEVICE(s));
s->conf.blk = NULL;
usb_desc_create_serial(dev);
usb_desc_init(dev);
scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev),
&usb_msd_scsi_info_storage, NULL);
scsi_dev = scsi_bus_legacy_add_drive(&s->bus, blk, 0, !!s->removable,
s->conf.bootindex, s->conf.share_rw,
s->conf.rerror, s->conf.werror,
dev->serial,
errp);
blk_unref(blk);
if (!scsi_dev) {
return;
}
usb_msd_handle_reset(dev);
s->scsi_dev = scsi_dev;
}
static void usb_msd_bot_realize(USBDevice *dev, Error **errp)
{
MSDState *s = USB_STORAGE_DEV(dev);
DeviceState *d = DEVICE(dev);
usb_desc_create_serial(dev);
usb_desc_init(dev);
if (d->hotplugged) {
s->dev.auto_attach = 0;
}
scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(dev),
&usb_msd_scsi_info_bot, NULL);
usb_msd_handle_reset(dev);
}
static const VMStateDescription vmstate_usb_msd = {
.name = "usb-storage",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_USB_DEVICE(dev, MSDState),
VMSTATE_UINT32(mode, MSDState),
VMSTATE_UINT32(scsi_len, MSDState),
VMSTATE_UINT32(scsi_off, MSDState),
VMSTATE_UINT32(data_len, MSDState),
VMSTATE_UINT32(csw.sig, MSDState),
VMSTATE_UINT32(csw.tag, MSDState),
VMSTATE_UINT32(csw.residue, MSDState),
VMSTATE_UINT8(csw.status, MSDState),
VMSTATE_END_OF_LIST()
}
};
static Property msd_properties[] = {
DEFINE_BLOCK_PROPERTIES(MSDState, conf),
DEFINE_BLOCK_ERROR_PROPERTIES(MSDState, conf),
DEFINE_PROP_BIT("removable", MSDState, removable, 0, false),
DEFINE_PROP_END_OF_LIST(),
};
static void usb_msd_class_initfn_common(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
uc->product_desc = "QEMU USB MSD";
uc->usb_desc = &desc;
uc->cancel_packet = usb_msd_cancel_io;
uc->handle_attach = usb_desc_attach;
uc->handle_reset = usb_msd_handle_reset;
uc->handle_control = usb_msd_handle_control;
uc->handle_data = usb_msd_handle_data;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
dc->fw_name = "storage";
dc->vmsd = &vmstate_usb_msd;
}
static void usb_msd_class_storage_initfn(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
uc->realize = usb_msd_storage_realize;
device_class_set_props(dc, msd_properties);
}
static void usb_msd_get_bootindex(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
USBDevice *dev = USB_DEVICE(obj);
MSDState *s = USB_STORAGE_DEV(dev);
visit_type_int32(v, name, &s->conf.bootindex, errp);
}
static void usb_msd_set_bootindex(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
USBDevice *dev = USB_DEVICE(obj);
MSDState *s = USB_STORAGE_DEV(dev);
int32_t boot_index;
Error *local_err = NULL;
if (!visit_type_int32(v, name, &boot_index, errp)) {
return;
}
/* check whether bootindex is present in fw_boot_order list */
check_boot_index(boot_index, &local_err);
if (local_err) {
goto out;
}
/* change bootindex to a new one */
s->conf.bootindex = boot_index;
if (s->scsi_dev) {
object_property_set_int(OBJECT(s->scsi_dev), "bootindex", boot_index,
&error_abort);
}
out:
error_propagate(errp, local_err);
}
static const TypeInfo usb_storage_dev_type_info = {
.name = TYPE_USB_STORAGE,
.parent = TYPE_USB_DEVICE,
.instance_size = sizeof(MSDState),
.abstract = true,
.class_init = usb_msd_class_initfn_common,
};
static void usb_msd_instance_init(Object *obj)
{
object_property_add(obj, "bootindex", "int32",
usb_msd_get_bootindex,
usb_msd_set_bootindex, NULL, NULL);
object_property_set_int(obj, "bootindex", -1, NULL);
}
static void usb_msd_class_bot_initfn(ObjectClass *klass, void *data)
{
USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
uc->realize = usb_msd_bot_realize;
uc->attached_settable = true;
}
static const TypeInfo msd_info = {
.name = "usb-storage",
.parent = TYPE_USB_STORAGE,
.class_init = usb_msd_class_storage_initfn,
.instance_init = usb_msd_instance_init,
};
static const TypeInfo bot_info = {
.name = "usb-bot",
.parent = TYPE_USB_STORAGE,
.class_init = usb_msd_class_bot_initfn,
};
static void usb_msd_register_types(void)
{
type_register_static(&usb_storage_dev_type_info);
type_register_static(&msd_info);
type_register_static(&bot_info);
}
type_init(usb_msd_register_types)
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