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/* $FreeBSD: release/9.1.0/sys/dev/usb/usb_msctest.c 235000 2012-05-04 15:05:30Z hselasky $ */
/*-
* Copyright (c) 2008,2011 Hans Petter Selasky. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* The following file contains code that will detect USB autoinstall
* disks.
*
* TODO: Potentially we could add code to automatically detect USB
* mass storage quirks for not supported SCSI commands!
*/
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/sysctl.h>
#include <sys/sx.h>
#include <sys/unistd.h>
#include <sys/callout.h>
#include <sys/malloc.h>
#include <sys/priv.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#define USB_DEBUG_VAR usb_debug
#include <dev/usb/usb_busdma.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/usb_transfer.h>
#include <dev/usb/usb_msctest.h>
#include <dev/usb/usb_debug.h>
#include <dev/usb/usb_device.h>
#include <dev/usb/usb_request.h>
#include <dev/usb/usb_util.h>
#include <dev/usb/quirk/usb_quirk.h>
enum {
ST_COMMAND,
ST_DATA_RD,
ST_DATA_RD_CS,
ST_DATA_WR,
ST_DATA_WR_CS,
ST_STATUS,
ST_MAX,
};
enum {
DIR_IN,
DIR_OUT,
DIR_NONE,
};
#define SCSI_MAX_LEN 0x100
#define SCSI_INQ_LEN 0x24
#define SCSI_SENSE_LEN 0xFF
static uint8_t scsi_test_unit_ready[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
static uint8_t scsi_inquiry[] = { 0x12, 0x00, 0x00, 0x00, SCSI_INQ_LEN, 0x00 };
static uint8_t scsi_rezero_init[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
static uint8_t scsi_start_stop_unit[] = { 0x1b, 0x00, 0x00, 0x00, 0x02, 0x00 };
static uint8_t scsi_ztestor_eject[] = { 0x85, 0x01, 0x01, 0x01, 0x18, 0x01,
0x01, 0x01, 0x01, 0x01, 0x00, 0x00 };
static uint8_t scsi_cmotech_eject[] = { 0xff, 0x52, 0x44, 0x45, 0x56, 0x43,
0x48, 0x47 };
static uint8_t scsi_huawei_eject[] = { 0x11, 0x06, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00 };
static uint8_t scsi_tct_eject[] = { 0x06, 0xf5, 0x04, 0x02, 0x52, 0x70 };
static uint8_t scsi_sync_cache[] = { 0x35, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00 };
static uint8_t scsi_request_sense[] = { 0x03, 0x00, 0x00, 0x00, 0x12, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
#define BULK_SIZE 64 /* dummy */
#define ERR_CSW_FAILED -1
/* Command Block Wrapper */
struct bbb_cbw {
uDWord dCBWSignature;
#define CBWSIGNATURE 0x43425355
uDWord dCBWTag;
uDWord dCBWDataTransferLength;
uByte bCBWFlags;
#define CBWFLAGS_OUT 0x00
#define CBWFLAGS_IN 0x80
uByte bCBWLUN;
uByte bCDBLength;
#define CBWCDBLENGTH 16
uByte CBWCDB[CBWCDBLENGTH];
} __packed;
/* Command Status Wrapper */
struct bbb_csw {
uDWord dCSWSignature;
#define CSWSIGNATURE 0x53425355
uDWord dCSWTag;
uDWord dCSWDataResidue;
uByte bCSWStatus;
#define CSWSTATUS_GOOD 0x0
#define CSWSTATUS_FAILED 0x1
#define CSWSTATUS_PHASE 0x2
} __packed;
struct bbb_transfer {
struct mtx mtx;
struct cv cv;
struct bbb_cbw cbw;
struct bbb_csw csw;
struct usb_xfer *xfer[ST_MAX];
uint8_t *data_ptr;
usb_size_t data_len; /* bytes */
usb_size_t data_rem; /* bytes */
usb_timeout_t data_timeout; /* ms */
usb_frlength_t actlen; /* bytes */
uint8_t cmd_len; /* bytes */
uint8_t dir;
uint8_t lun;
uint8_t state;
uint8_t status_try;
int error;
uint8_t buffer[SCSI_MAX_LEN] __aligned(4);
};
static usb_callback_t bbb_command_callback;
static usb_callback_t bbb_data_read_callback;
static usb_callback_t bbb_data_rd_cs_callback;
static usb_callback_t bbb_data_write_callback;
static usb_callback_t bbb_data_wr_cs_callback;
static usb_callback_t bbb_status_callback;
static void bbb_done(struct bbb_transfer *, int);
static void bbb_transfer_start(struct bbb_transfer *, uint8_t);
static void bbb_data_clear_stall_callback(struct usb_xfer *, uint8_t,
uint8_t);
static int bbb_command_start(struct bbb_transfer *, uint8_t, uint8_t,
void *, size_t, void *, size_t, usb_timeout_t);
static struct bbb_transfer *bbb_attach(struct usb_device *, uint8_t);
static void bbb_detach(struct bbb_transfer *);
static const struct usb_config bbb_config[ST_MAX] = {
[ST_COMMAND] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.bufsize = sizeof(struct bbb_cbw),
.flags = {.ext_buffer = 1,},
.callback = &bbb_command_callback,
.timeout = 4 * USB_MS_HZ, /* 4 seconds */
},
[ST_DATA_RD] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.bufsize = BULK_SIZE,
.flags = {.ext_buffer = 1,.proxy_buffer = 1,.short_xfer_ok = 1,},
.callback = &bbb_data_read_callback,
.timeout = 4 * USB_MS_HZ, /* 4 seconds */
},
[ST_DATA_RD_CS] = {
.type = UE_CONTROL,
.endpoint = 0x00, /* Control pipe */
.direction = UE_DIR_ANY,
.bufsize = sizeof(struct usb_device_request),
.callback = &bbb_data_rd_cs_callback,
.timeout = 1 * USB_MS_HZ, /* 1 second */
},
[ST_DATA_WR] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_OUT,
.bufsize = BULK_SIZE,
.flags = {.ext_buffer = 1,.proxy_buffer = 1,},
.callback = &bbb_data_write_callback,
.timeout = 4 * USB_MS_HZ, /* 4 seconds */
},
[ST_DATA_WR_CS] = {
.type = UE_CONTROL,
.endpoint = 0x00, /* Control pipe */
.direction = UE_DIR_ANY,
.bufsize = sizeof(struct usb_device_request),
.callback = &bbb_data_wr_cs_callback,
.timeout = 1 * USB_MS_HZ, /* 1 second */
},
[ST_STATUS] = {
.type = UE_BULK,
.endpoint = UE_ADDR_ANY,
.direction = UE_DIR_IN,
.bufsize = sizeof(struct bbb_csw),
.flags = {.ext_buffer = 1,.short_xfer_ok = 1,},
.callback = &bbb_status_callback,
.timeout = 1 * USB_MS_HZ, /* 1 second */
},
};
static void
bbb_done(struct bbb_transfer *sc, int error)
{
sc->error = error;
sc->state = ST_COMMAND;
sc->status_try = 1;
cv_signal(&sc->cv);
}
static void
bbb_transfer_start(struct bbb_transfer *sc, uint8_t xfer_index)
{
sc->state = xfer_index;
usbd_transfer_start(sc->xfer[xfer_index]);
}
static void
bbb_data_clear_stall_callback(struct usb_xfer *xfer,
uint8_t next_xfer, uint8_t stall_xfer)
{
struct bbb_transfer *sc = usbd_xfer_softc(xfer);
if (usbd_clear_stall_callback(xfer, sc->xfer[stall_xfer])) {
switch (USB_GET_STATE(xfer)) {
case USB_ST_SETUP:
case USB_ST_TRANSFERRED:
bbb_transfer_start(sc, next_xfer);
break;
default:
bbb_done(sc, USB_ERR_STALLED);
break;
}
}
}
static void
bbb_command_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct bbb_transfer *sc = usbd_xfer_softc(xfer);
uint32_t tag;
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
bbb_transfer_start
(sc, ((sc->dir == DIR_IN) ? ST_DATA_RD :
(sc->dir == DIR_OUT) ? ST_DATA_WR :
ST_STATUS));
break;
case USB_ST_SETUP:
sc->status_try = 0;
tag = UGETDW(sc->cbw.dCBWTag) + 1;
USETDW(sc->cbw.dCBWSignature, CBWSIGNATURE);
USETDW(sc->cbw.dCBWTag, tag);
USETDW(sc->cbw.dCBWDataTransferLength, (uint32_t)sc->data_len);
sc->cbw.bCBWFlags = ((sc->dir == DIR_IN) ? CBWFLAGS_IN : CBWFLAGS_OUT);
sc->cbw.bCBWLUN = sc->lun;
sc->cbw.bCDBLength = sc->cmd_len;
if (sc->cbw.bCDBLength > sizeof(sc->cbw.CBWCDB)) {
sc->cbw.bCDBLength = sizeof(sc->cbw.CBWCDB);
DPRINTFN(0, "Truncating long command\n");
}
usbd_xfer_set_frame_data(xfer, 0, &sc->cbw, sizeof(sc->cbw));
usbd_transfer_submit(xfer);
break;
default: /* Error */
bbb_done(sc, error);
break;
}
}
static void
bbb_data_read_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct bbb_transfer *sc = usbd_xfer_softc(xfer);
usb_frlength_t max_bulk = usbd_xfer_max_len(xfer);
int actlen, sumlen;
usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
sc->data_rem -= actlen;
sc->data_ptr += actlen;
sc->actlen += actlen;
if (actlen < sumlen) {
/* short transfer */
sc->data_rem = 0;
}
case USB_ST_SETUP:
DPRINTF("max_bulk=%d, data_rem=%d\n",
max_bulk, sc->data_rem);
if (sc->data_rem == 0) {
bbb_transfer_start(sc, ST_STATUS);
break;
}
if (max_bulk > sc->data_rem) {
max_bulk = sc->data_rem;
}
usbd_xfer_set_timeout(xfer, sc->data_timeout);
usbd_xfer_set_frame_data(xfer, 0, sc->data_ptr, max_bulk);
usbd_transfer_submit(xfer);
break;
default: /* Error */
if (error == USB_ERR_CANCELLED) {
bbb_done(sc, error);
} else {
bbb_transfer_start(sc, ST_DATA_RD_CS);
}
break;
}
}
static void
bbb_data_rd_cs_callback(struct usb_xfer *xfer, usb_error_t error)
{
bbb_data_clear_stall_callback(xfer, ST_STATUS,
ST_DATA_RD);
}
static void
bbb_data_write_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct bbb_transfer *sc = usbd_xfer_softc(xfer);
usb_frlength_t max_bulk = usbd_xfer_max_len(xfer);
int actlen, sumlen;
usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
sc->data_rem -= actlen;
sc->data_ptr += actlen;
sc->actlen += actlen;
if (actlen < sumlen) {
/* short transfer */
sc->data_rem = 0;
}
case USB_ST_SETUP:
DPRINTF("max_bulk=%d, data_rem=%d\n",
max_bulk, sc->data_rem);
if (sc->data_rem == 0) {
bbb_transfer_start(sc, ST_STATUS);
return;
}
if (max_bulk > sc->data_rem) {
max_bulk = sc->data_rem;
}
usbd_xfer_set_timeout(xfer, sc->data_timeout);
usbd_xfer_set_frame_data(xfer, 0, sc->data_ptr, max_bulk);
usbd_transfer_submit(xfer);
return;
default: /* Error */
if (error == USB_ERR_CANCELLED) {
bbb_done(sc, error);
} else {
bbb_transfer_start(sc, ST_DATA_WR_CS);
}
return;
}
}
static void
bbb_data_wr_cs_callback(struct usb_xfer *xfer, usb_error_t error)
{
bbb_data_clear_stall_callback(xfer, ST_STATUS,
ST_DATA_WR);
}
static void
bbb_status_callback(struct usb_xfer *xfer, usb_error_t error)
{
struct bbb_transfer *sc = usbd_xfer_softc(xfer);
int actlen;
int sumlen;
usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
switch (USB_GET_STATE(xfer)) {
case USB_ST_TRANSFERRED:
/* very simple status check */
if (actlen < (int)sizeof(sc->csw)) {
bbb_done(sc, USB_ERR_SHORT_XFER);
} else if (sc->csw.bCSWStatus == CSWSTATUS_GOOD) {
bbb_done(sc, 0); /* success */
} else {
bbb_done(sc, ERR_CSW_FAILED); /* error */
}
break;
case USB_ST_SETUP:
usbd_xfer_set_frame_data(xfer, 0, &sc->csw, sizeof(sc->csw));
usbd_transfer_submit(xfer);
break;
default:
DPRINTF("Failed to read CSW: %s, try %d\n",
usbd_errstr(error), sc->status_try);
if (error == USB_ERR_CANCELLED || sc->status_try) {
bbb_done(sc, error);
} else {
sc->status_try = 1;
bbb_transfer_start(sc, ST_DATA_RD_CS);
}
break;
}
}
/*------------------------------------------------------------------------*
* bbb_command_start - execute a SCSI command synchronously
*
* Return values
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
static int
bbb_command_start(struct bbb_transfer *sc, uint8_t dir, uint8_t lun,
void *data_ptr, size_t data_len, void *cmd_ptr, size_t cmd_len,
usb_timeout_t data_timeout)
{
sc->lun = lun;
sc->dir = data_len ? dir : DIR_NONE;
sc->data_ptr = data_ptr;
sc->data_len = data_len;
sc->data_rem = data_len;
sc->data_timeout = (data_timeout + USB_MS_HZ);
sc->actlen = 0;
sc->cmd_len = cmd_len;
memset(&sc->cbw.CBWCDB, 0, sizeof(sc->cbw.CBWCDB));
memcpy(&sc->cbw.CBWCDB, cmd_ptr, cmd_len);
DPRINTFN(1, "SCSI cmd = %*D\n", (int)cmd_len, (char *)sc->cbw.CBWCDB, ":");
mtx_lock(&sc->mtx);
usbd_transfer_start(sc->xfer[sc->state]);
while (usbd_transfer_pending(sc->xfer[sc->state])) {
cv_wait(&sc->cv, &sc->mtx);
}
mtx_unlock(&sc->mtx);
return (sc->error);
}
static struct bbb_transfer *
bbb_attach(struct usb_device *udev, uint8_t iface_index)
{
struct usb_interface *iface;
struct usb_interface_descriptor *id;
struct bbb_transfer *sc;
usb_error_t err;
uint8_t do_unlock;
/* automatic locking */
if (usbd_enum_is_locked(udev)) {
do_unlock = 0;
} else {
do_unlock = 1;
usbd_enum_lock(udev);
}
/*
* Make sure any driver which is hooked up to this interface,
* like umass is gone:
*/
usb_detach_device(udev, iface_index, 0);
if (do_unlock)
usbd_enum_unlock(udev);
iface = usbd_get_iface(udev, iface_index);
if (iface == NULL)
return (NULL);
id = iface->idesc;
if (id == NULL || id->bInterfaceClass != UICLASS_MASS)
return (NULL);
switch (id->bInterfaceSubClass) {
case UISUBCLASS_SCSI:
case UISUBCLASS_UFI:
case UISUBCLASS_SFF8020I:
case UISUBCLASS_SFF8070I:
break;
default:
return (NULL);
}
switch (id->bInterfaceProtocol) {
case UIPROTO_MASS_BBB_OLD:
case UIPROTO_MASS_BBB:
break;
default:
return (NULL);
}
sc = malloc(sizeof(*sc), M_USB, M_WAITOK | M_ZERO);
mtx_init(&sc->mtx, "USB autoinstall", NULL, MTX_DEF);
cv_init(&sc->cv, "WBBB");
err = usbd_transfer_setup(udev, &iface_index, sc->xfer, bbb_config,
ST_MAX, sc, &sc->mtx);
if (err) {
bbb_detach(sc);
return (NULL);
}
return (sc);
}
static void
bbb_detach(struct bbb_transfer *sc)
{
usbd_transfer_unsetup(sc->xfer, ST_MAX);
mtx_destroy(&sc->mtx);
cv_destroy(&sc->cv);
free(sc, M_USB);
}
/*------------------------------------------------------------------------*
* usb_iface_is_cdrom
*
* Return values:
* 1: This interface is an auto install disk (CD-ROM)
* 0: Not an auto install disk.
*------------------------------------------------------------------------*/
int
usb_iface_is_cdrom(struct usb_device *udev, uint8_t iface_index)
{
struct bbb_transfer *sc;
uint8_t timeout;
uint8_t is_cdrom;
uint8_t sid_type;
int err;
sc = bbb_attach(udev, iface_index);
if (sc == NULL)
return (0);
is_cdrom = 0;
timeout = 4; /* tries */
while (--timeout) {
err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
SCSI_INQ_LEN, &scsi_inquiry, sizeof(scsi_inquiry),
USB_MS_HZ);
if (err == 0 && sc->actlen > 0) {
sid_type = sc->buffer[0] & 0x1F;
if (sid_type == 0x05)
is_cdrom = 1;
break;
} else if (err != ERR_CSW_FAILED)
break; /* non retryable error */
usb_pause_mtx(NULL, hz);
}
bbb_detach(sc);
return (is_cdrom);
}
static uint8_t
usb_msc_get_max_lun(struct usb_device *udev, uint8_t iface_index)
{
struct usb_device_request req;
usb_error_t err;
uint8_t buf = 0;
/* The Get Max Lun command is a class-specific request. */
req.bmRequestType = UT_READ_CLASS_INTERFACE;
req.bRequest = 0xFE; /* GET_MAX_LUN */
USETW(req.wValue, 0);
req.wIndex[0] = iface_index;
req.wIndex[1] = 0;
USETW(req.wLength, 1);
err = usbd_do_request(udev, NULL, &req, &buf);
if (err)
buf = 0;
return (buf);
}
usb_error_t
usb_msc_auto_quirk(struct usb_device *udev, uint8_t iface_index)
{
struct bbb_transfer *sc;
uint8_t timeout;
uint8_t is_no_direct;
uint8_t sid_type;
int err;
sc = bbb_attach(udev, iface_index);
if (sc == NULL)
return (0);
/*
* Some devices need a delay after that the configuration
* value is set to function properly:
*/
usb_pause_mtx(NULL, hz);
if (usb_msc_get_max_lun(udev, iface_index) == 0) {
DPRINTF("Device has only got one LUN.\n");
usbd_add_dynamic_quirk(udev, UQ_MSC_NO_GETMAXLUN);
}
is_no_direct = 1;
for (timeout = 4; timeout; timeout--) {
err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
SCSI_INQ_LEN, &scsi_inquiry, sizeof(scsi_inquiry),
USB_MS_HZ);
if (err == 0 && sc->actlen > 0) {
sid_type = sc->buffer[0] & 0x1F;
if (sid_type == 0x00)
is_no_direct = 0;
break;
} else if (err != ERR_CSW_FAILED)
break; /* non retryable error */
usb_pause_mtx(NULL, hz);
}
if (is_no_direct) {
DPRINTF("Device is not direct access.\n");
goto done;
}
err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
&scsi_test_unit_ready, sizeof(scsi_test_unit_ready),
USB_MS_HZ);
if (err != 0) {
if (err != ERR_CSW_FAILED)
goto error;
}
err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
&scsi_sync_cache, sizeof(scsi_sync_cache),
USB_MS_HZ);
if (err != 0) {
if (err != ERR_CSW_FAILED)
goto error;
DPRINTF("Device doesn't handle synchronize cache\n");
usbd_add_dynamic_quirk(udev, UQ_MSC_NO_SYNC_CACHE);
}
/* clear sense status of any failed commands on the device */
err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
SCSI_INQ_LEN, &scsi_inquiry, sizeof(scsi_inquiry),
USB_MS_HZ);
DPRINTF("Inquiry = %d\n", err);
if (err != 0) {
if (err != ERR_CSW_FAILED)
goto error;
}
err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
SCSI_SENSE_LEN, &scsi_request_sense,
sizeof(scsi_request_sense), USB_MS_HZ);
DPRINTF("Request sense = %d\n", err);
if (err != 0) {
if (err != ERR_CSW_FAILED)
goto error;
}
done:
bbb_detach(sc);
return (0);
error:
bbb_detach(sc);
DPRINTF("Device did not respond, enabling all quirks\n");
usbd_add_dynamic_quirk(udev, UQ_MSC_NO_SYNC_CACHE);
usbd_add_dynamic_quirk(udev, UQ_MSC_NO_TEST_UNIT_READY);
/* Need to re-enumerate the device */
usbd_req_re_enumerate(udev, NULL);
return (USB_ERR_STALLED);
}
usb_error_t
usb_msc_eject(struct usb_device *udev, uint8_t iface_index, int method)
{
struct bbb_transfer *sc;
usb_error_t err;
sc = bbb_attach(udev, iface_index);
if (sc == NULL)
return (USB_ERR_INVAL);
err = 0;
switch (method) {
case MSC_EJECT_STOPUNIT:
err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
&scsi_test_unit_ready, sizeof(scsi_test_unit_ready),
USB_MS_HZ);
DPRINTF("Test unit ready status: %s\n", usbd_errstr(err));
err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
&scsi_start_stop_unit, sizeof(scsi_start_stop_unit),
USB_MS_HZ);
break;
case MSC_EJECT_REZERO:
err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
&scsi_rezero_init, sizeof(scsi_rezero_init),
USB_MS_HZ);
break;
case MSC_EJECT_ZTESTOR:
err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
&scsi_ztestor_eject, sizeof(scsi_ztestor_eject),
USB_MS_HZ);
break;
case MSC_EJECT_CMOTECH:
err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
&scsi_cmotech_eject, sizeof(scsi_cmotech_eject),
USB_MS_HZ);
break;
case MSC_EJECT_HUAWEI:
err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
&scsi_huawei_eject, sizeof(scsi_huawei_eject),
USB_MS_HZ);
break;
case MSC_EJECT_TCT:
/*
* TCTMobile needs DIR_IN flag. To get it, we
* supply a dummy data with the command.
*/
err = bbb_command_start(sc, DIR_IN, 0, &sc->buffer,
sizeof(sc->buffer), &scsi_tct_eject,
sizeof(scsi_tct_eject), USB_MS_HZ);
break;
default:
printf("usb_msc_eject: unknown eject method (%d)\n", method);
break;
}
DPRINTF("Eject CD command status: %s\n", usbd_errstr(err));
bbb_detach(sc);
return (0);
}