3 * Copyright (c) 2008,2011 Hans Petter Selasky. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * The following file contains code that will detect USB autoinstall
31 * TODO: Potentially we could add code to automatically detect USB
32 * mass storage quirks for not supported SCSI commands!
35 #ifdef USB_GLOBAL_INCLUDE_FILE
36 #include USB_GLOBAL_INCLUDE_FILE
38 #include <sys/stdint.h>
39 #include <sys/stddef.h>
40 #include <sys/param.h>
41 #include <sys/queue.h>
42 #include <sys/types.h>
43 #include <sys/systm.h>
44 #include <sys/kernel.h>
46 #include <sys/module.h>
48 #include <sys/mutex.h>
49 #include <sys/condvar.h>
50 #include <sys/sysctl.h>
52 #include <sys/unistd.h>
53 #include <sys/callout.h>
54 #include <sys/malloc.h>
57 #include <dev/usb/usb.h>
58 #include <dev/usb/usbdi.h>
59 #include <dev/usb/usbdi_util.h>
61 #define USB_DEBUG_VAR usb_debug
63 #include <dev/usb/usb_busdma.h>
64 #include <dev/usb/usb_process.h>
65 #include <dev/usb/usb_transfer.h>
66 #include <dev/usb/usb_msctest.h>
67 #include <dev/usb/usb_debug.h>
68 #include <dev/usb/usb_device.h>
69 #include <dev/usb/usb_request.h>
70 #include <dev/usb/usb_util.h>
71 #include <dev/usb/quirk/usb_quirk.h>
72 #endif /* USB_GLOBAL_INCLUDE_FILE */
90 #define SCSI_MAX_LEN MAX(0x100, BULK_SIZE)
91 #define SCSI_INQ_LEN 0x24
92 #define SCSI_SENSE_LEN 0xFF
94 static uint8_t scsi_test_unit_ready[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
95 static uint8_t scsi_inquiry[] = { 0x12, 0x00, 0x00, 0x00, SCSI_INQ_LEN, 0x00 };
96 static uint8_t scsi_rezero_init[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
97 static uint8_t scsi_start_stop_unit[] = { 0x1b, 0x00, 0x00, 0x00, 0x02, 0x00 };
98 static uint8_t scsi_ztestor_eject[] = { 0x85, 0x01, 0x01, 0x01, 0x18, 0x01,
99 0x01, 0x01, 0x01, 0x01, 0x00, 0x00 };
100 static uint8_t scsi_cmotech_eject[] = { 0xff, 0x52, 0x44, 0x45, 0x56, 0x43,
102 static uint8_t scsi_huawei_eject[] = { 0x11, 0x06, 0x00, 0x00, 0x00, 0x00,
103 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
104 0x00, 0x00, 0x00, 0x00 };
105 static uint8_t scsi_tct_eject[] = { 0x06, 0xf5, 0x04, 0x02, 0x52, 0x70 };
106 static uint8_t scsi_sync_cache[] = { 0x35, 0x00, 0x00, 0x00, 0x00, 0x00,
107 0x00, 0x00, 0x00, 0x00 };
108 static uint8_t scsi_request_sense[] = { 0x03, 0x00, 0x00, 0x00, 0x12, 0x00,
109 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
110 static uint8_t scsi_read_capacity[] = { 0x25, 0x00, 0x00, 0x00, 0x00, 0x00,
111 0x00, 0x00, 0x00, 0x00 };
113 #define BULK_SIZE 64 /* dummy */
114 #define ERR_CSW_FAILED -1
116 /* Command Block Wrapper */
118 uDWord dCBWSignature;
119 #define CBWSIGNATURE 0x43425355
121 uDWord dCBWDataTransferLength;
123 #define CBWFLAGS_OUT 0x00
124 #define CBWFLAGS_IN 0x80
127 #define CBWCDBLENGTH 16
128 uByte CBWCDB[CBWCDBLENGTH];
131 /* Command Status Wrapper */
133 uDWord dCSWSignature;
134 #define CSWSIGNATURE 0x53425355
136 uDWord dCSWDataResidue;
138 #define CSWSTATUS_GOOD 0x0
139 #define CSWSTATUS_FAILED 0x1
140 #define CSWSTATUS_PHASE 0x2
143 struct bbb_transfer {
149 struct usb_xfer *xfer[ST_MAX];
153 usb_size_t data_len; /* bytes */
154 usb_size_t data_rem; /* bytes */
155 usb_timeout_t data_timeout; /* ms */
156 usb_frlength_t actlen; /* bytes */
157 usb_frlength_t buffer_size; /* bytes */
159 uint8_t cmd_len; /* bytes */
169 static usb_callback_t bbb_command_callback;
170 static usb_callback_t bbb_data_read_callback;
171 static usb_callback_t bbb_data_rd_cs_callback;
172 static usb_callback_t bbb_data_write_callback;
173 static usb_callback_t bbb_data_wr_cs_callback;
174 static usb_callback_t bbb_status_callback;
176 static void bbb_done(struct bbb_transfer *, int);
177 static void bbb_transfer_start(struct bbb_transfer *, uint8_t);
178 static void bbb_data_clear_stall_callback(struct usb_xfer *, uint8_t,
180 static int bbb_command_start(struct bbb_transfer *, uint8_t, uint8_t,
181 void *, size_t, void *, size_t, usb_timeout_t);
182 static struct bbb_transfer *bbb_attach(struct usb_device *, uint8_t);
183 static void bbb_detach(struct bbb_transfer *);
185 static const struct usb_config bbb_config[ST_MAX] = {
189 .endpoint = UE_ADDR_ANY,
190 .direction = UE_DIR_OUT,
191 .bufsize = sizeof(struct bbb_cbw),
192 .callback = &bbb_command_callback,
193 .timeout = 4 * USB_MS_HZ, /* 4 seconds */
198 .endpoint = UE_ADDR_ANY,
199 .direction = UE_DIR_IN,
200 .bufsize = SCSI_MAX_LEN,
201 .flags = {.proxy_buffer = 1,.short_xfer_ok = 1,},
202 .callback = &bbb_data_read_callback,
203 .timeout = 4 * USB_MS_HZ, /* 4 seconds */
208 .endpoint = 0x00, /* Control pipe */
209 .direction = UE_DIR_ANY,
210 .bufsize = sizeof(struct usb_device_request),
211 .callback = &bbb_data_rd_cs_callback,
212 .timeout = 1 * USB_MS_HZ, /* 1 second */
217 .endpoint = UE_ADDR_ANY,
218 .direction = UE_DIR_OUT,
219 .bufsize = SCSI_MAX_LEN,
220 .flags = {.ext_buffer = 1,.proxy_buffer = 1,},
221 .callback = &bbb_data_write_callback,
222 .timeout = 4 * USB_MS_HZ, /* 4 seconds */
227 .endpoint = 0x00, /* Control pipe */
228 .direction = UE_DIR_ANY,
229 .bufsize = sizeof(struct usb_device_request),
230 .callback = &bbb_data_wr_cs_callback,
231 .timeout = 1 * USB_MS_HZ, /* 1 second */
236 .endpoint = UE_ADDR_ANY,
237 .direction = UE_DIR_IN,
238 .bufsize = sizeof(struct bbb_csw),
239 .flags = {.short_xfer_ok = 1,},
240 .callback = &bbb_status_callback,
241 .timeout = 1 * USB_MS_HZ, /* 1 second */
246 bbb_done(struct bbb_transfer *sc, int error)
249 sc->state = ST_COMMAND;
255 bbb_transfer_start(struct bbb_transfer *sc, uint8_t xfer_index)
257 sc->state = xfer_index;
258 usbd_transfer_start(sc->xfer[xfer_index]);
262 bbb_data_clear_stall_callback(struct usb_xfer *xfer,
263 uint8_t next_xfer, uint8_t stall_xfer)
265 struct bbb_transfer *sc = usbd_xfer_softc(xfer);
267 if (usbd_clear_stall_callback(xfer, sc->xfer[stall_xfer])) {
268 switch (USB_GET_STATE(xfer)) {
270 case USB_ST_TRANSFERRED:
271 bbb_transfer_start(sc, next_xfer);
274 bbb_done(sc, USB_ERR_STALLED);
281 bbb_command_callback(struct usb_xfer *xfer, usb_error_t error)
283 struct bbb_transfer *sc = usbd_xfer_softc(xfer);
286 switch (USB_GET_STATE(xfer)) {
287 case USB_ST_TRANSFERRED:
289 (sc, ((sc->dir == DIR_IN) ? ST_DATA_RD :
290 (sc->dir == DIR_OUT) ? ST_DATA_WR :
296 tag = UGETDW(sc->cbw->dCBWTag) + 1;
297 USETDW(sc->cbw->dCBWSignature, CBWSIGNATURE);
298 USETDW(sc->cbw->dCBWTag, tag);
299 USETDW(sc->cbw->dCBWDataTransferLength, (uint32_t)sc->data_len);
300 sc->cbw->bCBWFlags = ((sc->dir == DIR_IN) ? CBWFLAGS_IN : CBWFLAGS_OUT);
301 sc->cbw->bCBWLUN = sc->lun;
302 sc->cbw->bCDBLength = sc->cmd_len;
303 if (sc->cbw->bCDBLength > sizeof(sc->cbw->CBWCDB)) {
304 sc->cbw->bCDBLength = sizeof(sc->cbw->CBWCDB);
305 DPRINTFN(0, "Truncating long command\n");
307 usbd_xfer_set_frame_len(xfer, 0,
308 sizeof(struct bbb_cbw));
309 usbd_transfer_submit(xfer);
319 bbb_data_read_callback(struct usb_xfer *xfer, usb_error_t error)
321 struct bbb_transfer *sc = usbd_xfer_softc(xfer);
322 usb_frlength_t max_bulk = usbd_xfer_max_len(xfer);
325 usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
327 switch (USB_GET_STATE(xfer)) {
328 case USB_ST_TRANSFERRED:
329 sc->data_rem -= actlen;
330 sc->data_ptr += actlen;
331 sc->actlen += actlen;
333 if (actlen < sumlen) {
338 DPRINTF("max_bulk=%d, data_rem=%d\n",
339 max_bulk, sc->data_rem);
341 if (sc->data_rem == 0) {
342 bbb_transfer_start(sc, ST_STATUS);
345 if (max_bulk > sc->data_rem) {
346 max_bulk = sc->data_rem;
348 usbd_xfer_set_timeout(xfer, sc->data_timeout);
349 usbd_xfer_set_frame_data(xfer, 0, sc->data_ptr, max_bulk);
350 usbd_transfer_submit(xfer);
354 if (error == USB_ERR_CANCELLED) {
357 bbb_transfer_start(sc, ST_DATA_RD_CS);
364 bbb_data_rd_cs_callback(struct usb_xfer *xfer, usb_error_t error)
366 bbb_data_clear_stall_callback(xfer, ST_STATUS,
371 bbb_data_write_callback(struct usb_xfer *xfer, usb_error_t error)
373 struct bbb_transfer *sc = usbd_xfer_softc(xfer);
374 usb_frlength_t max_bulk = usbd_xfer_max_len(xfer);
377 usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
379 switch (USB_GET_STATE(xfer)) {
380 case USB_ST_TRANSFERRED:
381 sc->data_rem -= actlen;
382 sc->data_ptr += actlen;
383 sc->actlen += actlen;
385 if (actlen < sumlen) {
390 DPRINTF("max_bulk=%d, data_rem=%d\n",
391 max_bulk, sc->data_rem);
393 if (sc->data_rem == 0) {
394 bbb_transfer_start(sc, ST_STATUS);
397 if (max_bulk > sc->data_rem) {
398 max_bulk = sc->data_rem;
400 usbd_xfer_set_timeout(xfer, sc->data_timeout);
401 usbd_xfer_set_frame_data(xfer, 0, sc->data_ptr, max_bulk);
402 usbd_transfer_submit(xfer);
406 if (error == USB_ERR_CANCELLED) {
409 bbb_transfer_start(sc, ST_DATA_WR_CS);
416 bbb_data_wr_cs_callback(struct usb_xfer *xfer, usb_error_t error)
418 bbb_data_clear_stall_callback(xfer, ST_STATUS,
423 bbb_status_callback(struct usb_xfer *xfer, usb_error_t error)
425 struct bbb_transfer *sc = usbd_xfer_softc(xfer);
429 usbd_xfer_status(xfer, &actlen, &sumlen, NULL, NULL);
431 switch (USB_GET_STATE(xfer)) {
432 case USB_ST_TRANSFERRED:
434 /* very simple status check */
436 if (actlen < (int)sizeof(struct bbb_csw)) {
437 bbb_done(sc, USB_ERR_SHORT_XFER);
438 } else if (sc->csw->bCSWStatus == CSWSTATUS_GOOD) {
439 bbb_done(sc, 0); /* success */
441 bbb_done(sc, ERR_CSW_FAILED); /* error */
446 usbd_xfer_set_frame_len(xfer, 0,
447 sizeof(struct bbb_csw));
448 usbd_transfer_submit(xfer);
452 DPRINTF("Failed to read CSW: %s, try %d\n",
453 usbd_errstr(error), sc->status_try);
455 if (error == USB_ERR_CANCELLED || sc->status_try) {
459 bbb_transfer_start(sc, ST_DATA_RD_CS);
465 /*------------------------------------------------------------------------*
466 * bbb_command_start - execute a SCSI command synchronously
471 *------------------------------------------------------------------------*/
473 bbb_command_start(struct bbb_transfer *sc, uint8_t dir, uint8_t lun,
474 void *data_ptr, size_t data_len, void *cmd_ptr, size_t cmd_len,
475 usb_timeout_t data_timeout)
478 sc->dir = data_len ? dir : DIR_NONE;
479 sc->data_ptr = data_ptr;
480 sc->data_len = data_len;
481 sc->data_rem = data_len;
482 sc->data_timeout = (data_timeout + USB_MS_HZ);
484 sc->cmd_len = cmd_len;
485 memset(&sc->cbw->CBWCDB, 0, sizeof(sc->cbw->CBWCDB));
486 memcpy(&sc->cbw->CBWCDB, cmd_ptr, cmd_len);
487 DPRINTFN(1, "SCSI cmd = %*D\n", (int)cmd_len, (char *)sc->cbw->CBWCDB, ":");
490 usbd_transfer_start(sc->xfer[sc->state]);
492 while (usbd_transfer_pending(sc->xfer[sc->state])) {
493 cv_wait(&sc->cv, &sc->mtx);
495 mtx_unlock(&sc->mtx);
499 static struct bbb_transfer *
500 bbb_attach(struct usb_device *udev, uint8_t iface_index)
502 struct usb_interface *iface;
503 struct usb_interface_descriptor *id;
504 struct bbb_transfer *sc;
508 /* Prevent re-enumeration */
509 do_unlock = usbd_enum_lock(udev);
512 * Make sure any driver which is hooked up to this interface,
513 * like umass is gone:
515 usb_detach_device(udev, iface_index, 0);
518 usbd_enum_unlock(udev);
520 iface = usbd_get_iface(udev, iface_index);
525 if (id == NULL || id->bInterfaceClass != UICLASS_MASS)
528 switch (id->bInterfaceSubClass) {
529 case UISUBCLASS_SCSI:
531 case UISUBCLASS_SFF8020I:
532 case UISUBCLASS_SFF8070I:
538 switch (id->bInterfaceProtocol) {
539 case UIPROTO_MASS_BBB_OLD:
540 case UIPROTO_MASS_BBB:
546 sc = malloc(sizeof(*sc), M_USB, M_WAITOK | M_ZERO);
547 mtx_init(&sc->mtx, "USB autoinstall", NULL, MTX_DEF);
548 cv_init(&sc->cv, "WBBB");
550 err = usbd_transfer_setup(udev, &iface_index, sc->xfer, bbb_config,
551 ST_MAX, sc, &sc->mtx);
556 /* store pointer to DMA buffers */
557 sc->buffer = usbd_xfer_get_frame_buffer(
558 sc->xfer[ST_DATA_RD], 0);
560 usbd_xfer_max_len(sc->xfer[ST_DATA_RD]);
561 sc->cbw = usbd_xfer_get_frame_buffer(
562 sc->xfer[ST_COMMAND], 0);
563 sc->csw = usbd_xfer_get_frame_buffer(
564 sc->xfer[ST_STATUS], 0);
570 bbb_detach(struct bbb_transfer *sc)
572 usbd_transfer_unsetup(sc->xfer, ST_MAX);
573 mtx_destroy(&sc->mtx);
578 /*------------------------------------------------------------------------*
582 * 1: This interface is an auto install disk (CD-ROM)
583 * 0: Not an auto install disk.
584 *------------------------------------------------------------------------*/
586 usb_iface_is_cdrom(struct usb_device *udev, uint8_t iface_index)
588 struct bbb_transfer *sc;
594 sc = bbb_attach(udev, iface_index);
599 timeout = 4; /* tries */
601 err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
602 SCSI_INQ_LEN, &scsi_inquiry, sizeof(scsi_inquiry),
605 if (err == 0 && sc->actlen > 0) {
606 sid_type = sc->buffer[0] & 0x1F;
607 if (sid_type == 0x05)
610 } else if (err != ERR_CSW_FAILED)
611 break; /* non retryable error */
612 usb_pause_mtx(NULL, hz);
619 usb_msc_get_max_lun(struct usb_device *udev, uint8_t iface_index)
621 struct usb_device_request req;
626 /* The Get Max Lun command is a class-specific request. */
627 req.bmRequestType = UT_READ_CLASS_INTERFACE;
628 req.bRequest = 0xFE; /* GET_MAX_LUN */
629 USETW(req.wValue, 0);
630 req.wIndex[0] = iface_index;
632 USETW(req.wLength, 1);
634 err = usbd_do_request(udev, NULL, &req, &buf);
642 usb_msc_auto_quirk(struct usb_device *udev, uint8_t iface_index)
644 struct bbb_transfer *sc;
646 uint8_t is_no_direct;
650 sc = bbb_attach(udev, iface_index);
655 * Some devices need a delay after that the configuration
656 * value is set to function properly:
658 usb_pause_mtx(NULL, hz);
660 if (usb_msc_get_max_lun(udev, iface_index) == 0) {
661 DPRINTF("Device has only got one LUN.\n");
662 usbd_add_dynamic_quirk(udev, UQ_MSC_NO_GETMAXLUN);
666 for (timeout = 4; timeout != 0; timeout--) {
667 err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
668 SCSI_INQ_LEN, &scsi_inquiry, sizeof(scsi_inquiry),
671 if (err == 0 && sc->actlen > 0) {
672 sid_type = sc->buffer[0] & 0x1F;
673 if (sid_type == 0x00)
676 } else if (err != ERR_CSW_FAILED) {
677 DPRINTF("Device is not responding "
678 "properly to SCSI INQUIRY command.\n");
679 goto error; /* non retryable error */
681 usb_pause_mtx(NULL, hz);
685 DPRINTF("Device is not direct access.\n");
689 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
690 &scsi_test_unit_ready, sizeof(scsi_test_unit_ready),
695 if (err != ERR_CSW_FAILED)
701 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
702 &scsi_sync_cache, sizeof(scsi_sync_cache),
707 if (err != ERR_CSW_FAILED)
710 DPRINTF("Device doesn't handle synchronize cache\n");
712 usbd_add_dynamic_quirk(udev, UQ_MSC_NO_SYNC_CACHE);
717 * Certain Kingston memory sticks fail the first
718 * read capacity after a synchronize cache command
719 * has been issued. Disable the synchronize cache
720 * command for such devices.
723 err = bbb_command_start(sc, DIR_IN, 0, sc->buffer, 8,
724 &scsi_read_capacity, sizeof(scsi_read_capacity),
728 if (err != ERR_CSW_FAILED)
731 err = bbb_command_start(sc, DIR_IN, 0, sc->buffer, 8,
732 &scsi_read_capacity, sizeof(scsi_read_capacity),
737 goto retry_sync_cache;
739 DPRINTF("Device most likely doesn't "
740 "handle synchronize cache\n");
742 usbd_add_dynamic_quirk(udev,
743 UQ_MSC_NO_SYNC_CACHE);
745 if (err != ERR_CSW_FAILED)
751 /* clear sense status of any failed commands on the device */
753 err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
754 SCSI_INQ_LEN, &scsi_inquiry, sizeof(scsi_inquiry),
757 DPRINTF("Inquiry = %d\n", err);
761 if (err != ERR_CSW_FAILED)
765 err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
766 SCSI_SENSE_LEN, &scsi_request_sense,
767 sizeof(scsi_request_sense), USB_MS_HZ);
769 DPRINTF("Request sense = %d\n", err);
773 if (err != ERR_CSW_FAILED)
784 DPRINTF("Device did not respond, enabling all quirks\n");
786 usbd_add_dynamic_quirk(udev, UQ_MSC_NO_SYNC_CACHE);
787 usbd_add_dynamic_quirk(udev, UQ_MSC_NO_TEST_UNIT_READY);
789 /* Need to re-enumerate the device */
790 usbd_req_re_enumerate(udev, NULL);
792 return (USB_ERR_STALLED);
796 usb_msc_eject(struct usb_device *udev, uint8_t iface_index, int method)
798 struct bbb_transfer *sc;
801 sc = bbb_attach(udev, iface_index);
803 return (USB_ERR_INVAL);
806 case MSC_EJECT_STOPUNIT:
807 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
808 &scsi_test_unit_ready, sizeof(scsi_test_unit_ready),
810 DPRINTF("Test unit ready status: %s\n", usbd_errstr(err));
811 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
812 &scsi_start_stop_unit, sizeof(scsi_start_stop_unit),
815 case MSC_EJECT_REZERO:
816 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
817 &scsi_rezero_init, sizeof(scsi_rezero_init),
820 case MSC_EJECT_ZTESTOR:
821 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
822 &scsi_ztestor_eject, sizeof(scsi_ztestor_eject),
825 case MSC_EJECT_CMOTECH:
826 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
827 &scsi_cmotech_eject, sizeof(scsi_cmotech_eject),
830 case MSC_EJECT_HUAWEI:
831 err = bbb_command_start(sc, DIR_IN, 0, NULL, 0,
832 &scsi_huawei_eject, sizeof(scsi_huawei_eject),
837 * TCTMobile needs DIR_IN flag. To get it, we
838 * supply a dummy data with the command.
840 err = bbb_command_start(sc, DIR_IN, 0, sc->buffer,
841 sc->buffer_size, &scsi_tct_eject,
842 sizeof(scsi_tct_eject), USB_MS_HZ);
845 DPRINTF("Unknown eject method (%d)\n", method);
849 DPRINTF("Eject CD command status: %s\n", usbd_errstr(err));