Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
NetBSD/sys/dev/usb/umass.c

1842 lines
52 KiB
C
Raw Blame History

/* $NetBSD: umass.c,v 1.56 2001/04/13 12:24:10 augustss Exp $ */
/*-
* Copyright (c) 1999 MAEKAWA Masahide <bishop@rr.iij4u.or.jp>,
* Nick Hibma <n_hibma@freebsd.org>
* 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.
*
* $FreeBSD: src/sys/dev/usb/umass.c,v 1.13 2000/03/26 01:39:12 n_hibma Exp $
*/
/*
* Universal Serial Bus Mass Storage Class specs:
* http://www.usb.org/developers/data/devclass/usbmassover_11.pdf
* http://www.usb.org/developers/data/devclass/usbmassbulk_10.pdf
* http://www.usb.org/developers/data/devclass/usbmass-cbi10.pdf
* http://www.usb.org/developers/data/devclass/usbmass-ufi10.pdf
*/
/*
* Ported to NetBSD by Lennart Augustsson <augustss@netbsd.org>.
* Parts of the code written my Jason R. Thorpe <thorpej@shagadelic.org>.
*/
/*
* The driver handles 3 Wire Protocols
* - Command/Bulk/Interrupt (CBI)
* - Command/Bulk/Interrupt with Command Completion Interrupt (CBI with CCI)
* - Mass Storage Bulk-Only (BBB)
* (BBB refers Bulk/Bulk/Bulk for Command/Data/Status phases)
*
* Over these wire protocols it handles the following command protocols
* - SCSI
* - 8070 (ATA/ATAPI for rewritable removable media)
* - UFI (USB Floppy Interface)
*
* 8070i is a transformed version of the SCSI command set. UFI is a transformed
* version of the 8070i command set. The sc->transform method is used to
* convert the commands into the appropriate format (if at all necessary).
* For example, ATAPI requires all commands to be 12 bytes in length amongst
* other things.
*
* The source code below is marked and can be split into a number of pieces
* (in this order):
*
* - probe/attach/detach
* - generic transfer routines
* - BBB
* - CBI
* - CBI_I (in addition to functions from CBI)
* - CAM (Common Access Method)
* - SCSI
* - UFI
* - 8070i
*
* The protocols are implemented using a state machine, for the transfers as
* well as for the resets. The state machine is contained in umass_*_state.
* The state machine is started through either umass_*_transfer or
* umass_*_reset.
*
* The reason for doing this is a) CAM performs a lot better this way and b) it
* avoids using tsleep from interrupt context (for example after a failed
* transfer).
*/
/*
* The SCSI related part of this driver has been derived from the
* dev/ppbus/vpo.c driver, by Nicolas Souchu (nsouch@freebsd.org).
*
* The CAM layer uses so called actions which are messages sent to the host
* adapter for completion. The actions come in through umass_cam_action. The
* appropriate block of routines is called depending on the transport protocol
* in use. When the transfer has finished, these routines call
* umass_cam_cb again to complete the CAM command.
*/
#include "atapibus.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#if defined(__NetBSD__) || defined(__OpenBSD__)
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#undef KASSERT
#define KASSERT(cond, msg)
#elif defined(__FreeBSD__)
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/clock.h>
#endif
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/umassbus.h>
#include <dev/usb/umassvar.h>
#ifdef UMASS_DEBUG
char *states[TSTATE_STATES+1] = {
/* should be kept in sync with the list at transfer_state */
"Idle",
"BBB CBW",
"BBB Data",
"BBB Data bulk-in/-out clear stall",
"BBB CSW, 1st attempt",
"BBB CSW bulk-in clear stall",
"BBB CSW, 2nd attempt",
"BBB Reset",
"BBB bulk-in clear stall",
"BBB bulk-out clear stall",
"CBI Command",
"CBI Data",
"CBI Status",
"CBI Data bulk-in/-out clear stall",
"CBI Status intr-in clear stall",
"CBI Reset",
"CBI bulk-in clear stall",
"CBI bulk-out clear stall",
NULL
};
#endif
struct cam_sim *umass_sim; /* SCSI Interface Module */
struct cam_path *umass_path; /* and its path */
/* USB device probe/attach/detach functions */
USB_DECLARE_DRIVER(umass);
Static void umass_disco(struct umass_softc *sc);
Static int umass_match_proto(struct umass_softc *sc,
usbd_interface_handle iface,
usbd_device_handle dev);
Static void umass_init_shuttle(struct umass_softc *sc);
/* generic transfer functions */
Static usbd_status umass_setup_transfer(struct umass_softc *sc,
usbd_pipe_handle pipe,
void *buffer, int buflen, int flags,
usbd_xfer_handle xfer);
Static usbd_status umass_setup_ctrl_transfer(struct umass_softc *sc,
usbd_device_handle dev,
usb_device_request_t *req,
void *buffer, int buflen, int flags,
usbd_xfer_handle xfer);
Static void umass_clear_endpoint_stall(struct umass_softc *sc,
u_int8_t endpt, usbd_pipe_handle pipe,
int state, usbd_xfer_handle xfer);
#if 0
Static void umass_reset(struct umass_softc *sc, transfer_cb_f cb, void *priv);
#endif
/* Bulk-Only related functions */
Static void umass_bbb_reset(struct umass_softc *sc, int status);
Static void umass_bbb_transfer(struct umass_softc *sc, int lun,
void *cmd, int cmdlen,
void *data, int datalen, int dir,
transfer_cb_f cb, void *priv);
Static void umass_bbb_state(usbd_xfer_handle xfer,
usbd_private_handle priv,
usbd_status err);
usbd_status umass_bbb_get_max_lun(struct umass_softc *sc, u_int8_t *maxlun);
/* CBI related functions */
Static int umass_cbi_adsc(struct umass_softc *sc, char *buffer,int buflen,
usbd_xfer_handle xfer);
Static void umass_cbi_reset(struct umass_softc *sc, int status);
Static void umass_cbi_transfer(struct umass_softc *sc, int lun,
void *cmd, int cmdlen,
void *data, int datalen, int dir,
transfer_cb_f cb, void *priv);
Static void umass_cbi_state(usbd_xfer_handle xfer,
usbd_private_handle priv, usbd_status err);
#ifdef UMASS_DEBUG
/* General debugging functions */
Static void umass_bbb_dump_cbw(struct umass_softc *sc,
umass_bbb_cbw_t *cbw);
Static void umass_bbb_dump_csw(struct umass_softc *sc,
umass_bbb_csw_t *csw);
Static void umass_dump_buffer(struct umass_softc *sc, u_int8_t *buffer,
int buflen, int printlen);
#endif
void usbd_clear_endpoint_toggle(usbd_pipe_handle pipe); /* XXXXX */
/*
* USB device probe/attach/detach
*/
/*
* Match the device we are seeing with the devices supported. Fill in the
* proto and drive fields in the softc accordingly.
* This function is called from both probe and attach.
*/
Static int
umass_match_proto(struct umass_softc *sc, usbd_interface_handle iface,
usbd_device_handle dev)
{
usb_device_descriptor_t *dd;
usb_interface_descriptor_t *id;
u_int vendor, product;
/*
* Fill in sc->drive and sc->proto and return a match
* value if both are determined and 0 otherwise.
*/
sc->drive = DRIVE_GENERIC;
sc->proto = PROTO_UNKNOWN;
sc->transfer_speed = UMASS_DEFAULT_TRANSFER_SPEED;
sc->sc_udev = dev;
dd = usbd_get_device_descriptor(dev);
vendor = UGETW(dd->idVendor);
product = UGETW(dd->idProduct);
if (vendor == USB_VENDOR_SHUTTLE &&
(product == USB_PRODUCT_SHUTTLE_EUSB ||
product == USB_PRODUCT_SHUTTLE_ZIOMMC)
) {
if (product == USB_PRODUCT_SHUTTLE_EUSB)
sc->drive = SHUTTLE_EUSB;
#if CBI_I
sc->proto = PROTO_ATAPI | PROTO_CBI_I;
#else
sc->proto = PROTO_ATAPI | PROTO_CBI;
#endif
sc->subclass = UISUBCLASS_SFF8020I;
sc->protocol = UIPROTO_MASS_CBI;
sc->quirks |= NO_TEST_UNIT_READY | NO_START_STOP;
return (UMATCH_VENDOR_PRODUCT);
}
if (vendor == USB_VENDOR_MICROTECH &&
product == USB_PRODUCT_MICROTECH_DPCM) {
sc->proto = PROTO_ATAPI | PROTO_CBI;
sc->subclass = UISUBCLASS_SFF8070I;
sc->protocol = UIPROTO_MASS_CBI;
sc->transfer_speed = UMASS_ZIP100_TRANSFER_SPEED * 2;
return (UMATCH_VENDOR_PRODUCT);
}
if (vendor == USB_VENDOR_YANO &&
product == USB_PRODUCT_YANO_U640MO) {
#if CBI_I
sc->proto = PROTO_ATAPI | PROTO_CBI_I;
#else
sc->proto = PROTO_ATAPI | PROTO_CBI;
#endif
sc->quirks |= FORCE_SHORT_INQUIRY;
return (UMATCH_VENDOR_PRODUCT);
}
if (vendor == USB_VENDOR_SONY &&
product == USB_PRODUCT_SONY_MSC) {
sc->quirks |= FORCE_SHORT_INQUIRY;
}
if (vendor == USB_VENDOR_YEDATA &&
product == USB_PRODUCT_YEDATA_FLASHBUSTERU) {
/* Revisions < 1.28 do not handle the interrupt endpoint
* very well.
*/
if (UGETW(dd->bcdDevice) < 0x128)
sc->proto = PROTO_UFI | PROTO_CBI;
else
#if CBI_I
sc->proto = PROTO_UFI | PROTO_CBI_I;
#else
sc->proto = PROTO_UFI | PROTO_CBI;
#endif
/*
* Revisions < 1.28 do not have the TEST UNIT READY command
* Revisions == 1.28 have a broken TEST UNIT READY
*/
if (UGETW(dd->bcdDevice) <= 0x128)
sc->quirks |= NO_TEST_UNIT_READY;
sc->subclass = UISUBCLASS_UFI;
sc->protocol = UIPROTO_MASS_CBI;
sc->quirks |= RS_NO_CLEAR_UA;
sc->transfer_speed = UMASS_FLOPPY_TRANSFER_SPEED;
return (UMATCH_VENDOR_PRODUCT_REV);
}
if (vendor == USB_VENDOR_INSYSTEM &&
product == USB_PRODUCT_INSYSTEM_USBCABLE) {
sc->drive = INSYSTEM_USBCABLE;
sc->proto = PROTO_ATAPI | PROTO_CBI;
sc->quirks |= NO_TEST_UNIT_READY | NO_START_STOP;
return (UMATCH_VENDOR_PRODUCT);
}
id = usbd_get_interface_descriptor(iface);
if (id == NULL || id->bInterfaceClass != UICLASS_MASS)
return (UMATCH_NONE);
if (vendor == USB_VENDOR_SONY && id->bInterfaceSubClass == 0xff) {
/*
* Sony DSC devices set the sub class to 0xff
* instead of 1 (RBC). Fix that here.
*/
id->bInterfaceSubClass = UISUBCLASS_RBC;
/* They also should be able to do higher speed. */
sc->transfer_speed = 500;
}
if (vendor == USB_VENDOR_FUJIPHOTO &&
product == USB_PRODUCT_FUJIPHOTO_MASS0100)
sc->quirks |= NO_TEST_UNIT_READY | NO_START_STOP;
sc->subclass = id->bInterfaceSubClass;
sc->protocol = id->bInterfaceProtocol;
switch (sc->subclass) {
case UISUBCLASS_SCSI:
sc->proto |= PROTO_SCSI;
break;
case UISUBCLASS_UFI:
sc->transfer_speed = UMASS_FLOPPY_TRANSFER_SPEED;
sc->proto |= PROTO_UFI;
break;
case UISUBCLASS_SFF8020I:
case UISUBCLASS_SFF8070I:
case UISUBCLASS_QIC157:
sc->proto |= PROTO_ATAPI;
break;
case UISUBCLASS_RBC:
sc->proto |= PROTO_RBC;
break;
default:
DPRINTF(UDMASS_GEN, ("%s: Unsupported command protocol %d\n",
USBDEVNAME(sc->sc_dev), id->bInterfaceSubClass));
return (UMATCH_NONE);
}
switch (sc->protocol) {
case UIPROTO_MASS_CBI:
sc->proto |= PROTO_CBI;
break;
case UIPROTO_MASS_CBI_I:
#if CBI_I
sc->proto |= PROTO_CBI_I;
#else
sc->proto |= PROTO_CBI;
#endif
break;
case UIPROTO_MASS_BBB:
sc->proto |= PROTO_BBB;
break;
case UIPROTO_MASS_BBB_P:
sc->drive = ZIP_100;
sc->proto |= PROTO_BBB;
sc->transfer_speed = UMASS_ZIP100_TRANSFER_SPEED;
sc->quirks |= NO_TEST_UNIT_READY;
break;
default:
DPRINTF(UDMASS_GEN, ("%s: Unsupported wire protocol %d\n",
USBDEVNAME(sc->sc_dev), id->bInterfaceProtocol));
return (UMATCH_NONE);
}
return (UMATCH_DEVCLASS_DEVSUBCLASS_DEVPROTO);
}
USB_MATCH(umass)
{
USB_MATCH_START(umass, uaa);
#if defined(__FreeBSD__)
struct umass_softc *sc = device_get_softc(self);
#elif defined(__NetBSD__) || defined(__OpenBSD__)
struct umass_softc scs, *sc = &scs;
memset(sc, 0, sizeof *sc);
strcpy(sc->sc_dev.dv_xname, "umass");
#endif
if (uaa->iface == NULL)
return(UMATCH_NONE);
return (umass_match_proto(sc, uaa->iface, uaa->device));
}
USB_ATTACH(umass)
{
USB_ATTACH_START(umass, sc, uaa);
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
const char *sSubclass, *sProto;
char devinfo[1024];
int i, bno;
int err;
/*
* the softc struct is bzero-ed in device_set_driver. We can safely
* call umass_detach without specifically initialising the struct.
*/
usbd_devinfo(uaa->device, 0, devinfo);
USB_ATTACH_SETUP;
sc->iface = uaa->iface;
sc->ifaceno = uaa->ifaceno;
/* initialise the proto and drive values in the umass_softc (again) */
if (umass_match_proto(sc, sc->iface, uaa->device) == 0) {
printf("%s: match failed\n", USBDEVNAME(sc->sc_dev));
USB_ATTACH_ERROR_RETURN;
}
if (sc->drive == INSYSTEM_USBCABLE) {
err = usbd_set_interface(sc->iface, 1);
if (err) {
DPRINTF(UDMASS_USB, ("%s: could not switch to "
"Alt Interface %d\n",
USBDEVNAME(sc->sc_dev), 1));
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
}
/*
* The timeout is based on the maximum expected transfer size
* divided by the expected transfer speed.
* We multiply by 4 to make sure a busy system doesn't make things
* fail.
*/
sc->timeout = 4 * UMASS_MAX_TRANSFER_SIZE / sc->transfer_speed;
sc->timeout += UMASS_SPINUP_TIME; /* allow for spinning up */
id = usbd_get_interface_descriptor(sc->iface);
printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo);
switch (sc->subclass) {
case UISUBCLASS_RBC:
sSubclass = "RBC";
break;
case UISUBCLASS_SCSI:
sSubclass = "SCSI";
break;
case UISUBCLASS_UFI:
sSubclass = "UFI";
break;
case UISUBCLASS_SFF8020I:
sSubclass = "SFF8020i";
break;
case UISUBCLASS_SFF8070I:
sSubclass = "SFF8070i";
break;
case UISUBCLASS_QIC157:
sSubclass = "QIC157";
break;
default:
sSubclass = "unknown";
break;
}
switch (sc->protocol) {
case UIPROTO_MASS_CBI:
sProto = "CBI";
break;
case UIPROTO_MASS_CBI_I:
sProto = "CBI-I";
break;
case UIPROTO_MASS_BBB:
sProto = "BBB";
break;
case UIPROTO_MASS_BBB_P:
sProto = "BBB-P";
break;
default:
sProto = "unknown";
break;
}
printf("%s: using %s over %s\n", USBDEVNAME(sc->sc_dev), sSubclass,
sProto);
/*
* In addition to the Control endpoint the following endpoints
* are required:
* a) bulk-in endpoint.
* b) bulk-out endpoint.
* and for Control/Bulk/Interrupt with CCI (CBI_I)
* c) intr-in
*
* The endpoint addresses are not fixed, so we have to read them
* from the device descriptors of the current interface.
*/
for (i = 0 ; i < id->bNumEndpoints ; i++) {
ed = usbd_interface2endpoint_descriptor(sc->iface, i);
if (!ed) {
printf("%s: could not read endpoint descriptor\n",
USBDEVNAME(sc->sc_dev));
USB_ATTACH_ERROR_RETURN;
}
if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN
&& (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
sc->bulkin = ed->bEndpointAddress;
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT
&& (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
sc->bulkout = ed->bEndpointAddress;
} else if (sc->proto & PROTO_CBI_I
&& UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN
&& (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) {
sc->intrin = ed->bEndpointAddress;
#ifdef UMASS_DEBUG
if (UGETW(ed->wMaxPacketSize) > 2) {
DPRINTF(UDMASS_CBI, ("%s: intr size is %d\n",
USBDEVNAME(sc->sc_dev),
UGETW(ed->wMaxPacketSize)));
}
#endif
}
}
/* check whether we found all the endpoints we need */
if (!sc->bulkin || !sc->bulkout
|| (sc->proto & PROTO_CBI_I && !sc->intrin) ) {
DPRINTF(UDMASS_USB, ("%s: endpoint not found %d/%d/%d\n",
USBDEVNAME(sc->sc_dev),
sc->bulkin, sc->bulkout, sc->intrin));
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
/*
* Get the maximum LUN supported by the device.
*/
if ((sc->proto & PROTO_WIRE) == PROTO_BBB) {
err = umass_bbb_get_max_lun(sc, &sc->maxlun);
if (err) {
printf("%s: unable to get Max Lun: %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
USB_ATTACH_ERROR_RETURN;
}
} else {
sc->maxlun = 0;
}
/* Open the bulk-in and -out pipe */
err = usbd_open_pipe(sc->iface, sc->bulkout,
USBD_EXCLUSIVE_USE, &sc->bulkout_pipe);
if (err) {
DPRINTF(UDMASS_USB, ("%s: cannot open %d-out pipe (bulk)\n",
USBDEVNAME(sc->sc_dev), sc->bulkout));
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
err = usbd_open_pipe(sc->iface, sc->bulkin,
USBD_EXCLUSIVE_USE, &sc->bulkin_pipe);
if (err) {
DPRINTF(UDMASS_USB, ("%s: could not open %d-in pipe (bulk)\n",
USBDEVNAME(sc->sc_dev), sc->bulkin));
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
/*
* Open the intr-in pipe if the protocol is CBI with CCI.
* Note: early versions of the Zip drive do have an interrupt pipe, but
* this pipe is unused
*
* We do not open the interrupt pipe as an interrupt pipe, but as a
* normal bulk endpoint. We send an IN transfer down the wire at the
* appropriate time, because we know exactly when to expect data on
* that endpoint. This saves bandwidth, but more important, makes the
* code for handling the data on that endpoint simpler. No data
* arriving concurrently.
*/
if (sc->proto & PROTO_CBI_I) {
err = usbd_open_pipe(sc->iface, sc->intrin,
USBD_EXCLUSIVE_USE, &sc->intrin_pipe);
if (err) {
DPRINTF(UDMASS_USB, ("%s: couldn't open %d-in (intr)\n",
USBDEVNAME(sc->sc_dev), sc->intrin));
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
}
/* initialisation of generic part */
sc->transfer_state = TSTATE_IDLE;
/* request a sufficient number of xfer handles */
for (i = 0; i < XFER_NR; i++) {
sc->transfer_xfer[i] = usbd_alloc_xfer(uaa->device);
if (sc->transfer_xfer[i] == 0) {
DPRINTF(UDMASS_USB, ("%s: Out of memory\n",
USBDEVNAME(sc->sc_dev)));
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
}
/* Allocate buffer for data transfer (it's huge). */
switch (sc->proto & PROTO_WIRE) {
case PROTO_BBB:
bno = XFER_BBB_DATA;
goto dalloc;
case PROTO_CBI:
bno = XFER_CBI_DATA;
goto dalloc;
case PROTO_CBI_I:
bno = XFER_CBI_DATA;
dalloc:
sc->data_buffer = usbd_alloc_buffer(sc->transfer_xfer[bno],
UMASS_MAX_TRANSFER_SIZE);
if (sc->data_buffer == NULL) {
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
break;
default:
break;
}
/* Initialise the wire protocol specific methods */
if (sc->proto & PROTO_BBB) {
sc->reset = umass_bbb_reset;
sc->transfer = umass_bbb_transfer;
sc->state = umass_bbb_state;
} else if ((sc->proto & PROTO_CBI) || (sc->proto & PROTO_CBI_I)) {
sc->reset = umass_cbi_reset;
sc->transfer = umass_cbi_transfer;
sc->state = umass_cbi_state;
#ifdef UMASS_DEBUG
} else {
panic("%s:%d: Unknown proto 0x%02x\n",
__FILE__, __LINE__, sc->proto);
#endif
}
if (sc->drive == SHUTTLE_EUSB)
umass_init_shuttle(sc);
if (umass_attach_bus(sc)) {
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
DPRINTF(UDMASS_GEN, ("%s: Attach finished\n", USBDEVNAME(sc->sc_dev)));
USB_ATTACH_SUCCESS_RETURN;
}
USB_DETACH(umass)
{
USB_DETACH_START(umass, sc);
int rv = 0;
DPRINTF(UDMASS_USB, ("%s: detached\n", USBDEVNAME(sc->sc_dev)));
/* Abort the pipes to wake up any waiting processes. */
if (sc->bulkout_pipe != NULL)
usbd_abort_pipe(sc->bulkout_pipe);
if (sc->bulkin_pipe != NULL)
usbd_abort_pipe(sc->bulkin_pipe);
if (sc->intrin_pipe != NULL)
usbd_abort_pipe(sc->intrin_pipe);
#if 0
/* Do we really need reference counting? Perhaps in ioctl() */
s = splusb();
if (--sc->sc_refcnt >= 0) {
/* Wait for processes to go away. */
usb_detach_wait(USBDEV(sc->sc_dev));
}
splx(s);
#endif
rv = umass_detach_bus(sc, flags);
if (rv != 0)
return (rv);
umass_disco(sc);
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
USBDEV(sc->sc_dev));
return (0);
}
Static void
umass_disco(struct umass_softc *sc)
{
int i;
DPRINTF(UDMASS_GEN, ("umass_disco\n"));
/* Free the xfers. */
for (i = 0; i < XFER_NR; i++)
if (sc->transfer_xfer[i] != NULL) {
usbd_free_xfer(sc->transfer_xfer[i]);
sc->transfer_xfer[i] = NULL;
}
/* Remove all the pipes. */
if (sc->bulkout_pipe != NULL)
usbd_close_pipe(sc->bulkout_pipe);
if (sc->bulkin_pipe != NULL)
usbd_close_pipe(sc->bulkin_pipe);
if (sc->intrin_pipe != NULL)
usbd_close_pipe(sc->intrin_pipe);
}
Static void
umass_init_shuttle(struct umass_softc *sc)
{
usb_device_request_t req;
u_char status[2];
/* The Linux driver does this */
req.bmRequestType = UT_READ_VENDOR_DEVICE;
req.bRequest = 1;
USETW(req.wValue, 0);
USETW(req.wIndex, sc->ifaceno);
USETW(req.wLength, sizeof status);
(void)usbd_do_request(sc->sc_udev, &req, &status);
}
/*
* Generic functions to handle transfers
*/
Static usbd_status
umass_setup_transfer(struct umass_softc *sc, usbd_pipe_handle pipe,
void *buffer, int buflen, int flags,
usbd_xfer_handle xfer)
{
usbd_status err;
if (sc->sc_dying)
return (USBD_IOERROR);
/* Initialiase a USB transfer and then schedule it */
usbd_setup_xfer(xfer, pipe, (void *)sc, buffer, buflen,
flags | sc->sc_xfer_flags, sc->timeout, sc->state);
err = usbd_transfer(xfer);
DPRINTF(UDMASS_XFER,("%s: start xfer buffer=%p buflen=%d flags=0x%x "
"timeout=%d\n", USBDEVNAME(sc->sc_dev),
buffer, buflen, flags | sc->sc_xfer_flags, sc->timeout));
if (err && err != USBD_IN_PROGRESS) {
DPRINTF(UDMASS_BBB, ("%s: failed to setup transfer, %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err)));
return (err);
}
return (USBD_NORMAL_COMPLETION);
}
Static usbd_status
umass_setup_ctrl_transfer(struct umass_softc *sc, usbd_device_handle dev,
usb_device_request_t *req,
void *buffer, int buflen, int flags,
usbd_xfer_handle xfer)
{
usbd_status err;
if (sc->sc_dying)
return (USBD_IOERROR);
/* Initialiase a USB control transfer and then schedule it */
usbd_setup_default_xfer(xfer, dev, (void *) sc,
sc->timeout, req, buffer, buflen, flags, sc->state);
err = usbd_transfer(xfer);
if (err && err != USBD_IN_PROGRESS) {
DPRINTF(UDMASS_BBB, ("%s: failed to setup ctrl transfer, %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err)));
/* do not reset, as this would make us loop */
return (err);
}
return (USBD_NORMAL_COMPLETION);
}
Static void
umass_clear_endpoint_stall(struct umass_softc *sc,
u_int8_t endpt, usbd_pipe_handle pipe,
int state, usbd_xfer_handle xfer)
{
usbd_device_handle dev;
if (sc->sc_dying)
return;
DPRINTF(UDMASS_BBB, ("%s: Clear endpoint 0x%02x stall\n",
USBDEVNAME(sc->sc_dev), endpt));
usbd_interface2device_handle(sc->iface, &dev);
sc->transfer_state = state;
usbd_clear_endpoint_toggle(pipe);
sc->request.bmRequestType = UT_WRITE_ENDPOINT;
sc->request.bRequest = UR_CLEAR_FEATURE;
USETW(sc->request.wValue, UF_ENDPOINT_HALT);
USETW(sc->request.wIndex, endpt);
USETW(sc->request.wLength, 0);
umass_setup_ctrl_transfer(sc, dev, &sc->request, NULL, 0, 0, xfer);
}
#if 0
Static void
umass_reset(struct umass_softc *sc, transfer_cb_f cb, void *priv)
{
sc->transfer_cb = cb;
sc->transfer_priv = priv;
/* The reset is a forced reset, so no error (yet) */
sc->reset(sc, STATUS_CMD_OK);
}
#endif
/*
* Bulk protocol specific functions
*/
Static void
umass_bbb_reset(struct umass_softc *sc, int status)
{
usbd_device_handle dev;
KASSERT(sc->proto & PROTO_BBB,
("sc->proto == 0x%02x wrong for umass_bbb_reset\n", sc->proto));
if (sc->sc_dying)
return;
/*
* Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class)
*
* For Reset Recovery the host shall issue in the following order:
* a) a Bulk-Only Mass Storage Reset
* b) a Clear Feature HALT to the Bulk-In endpoint
* c) a Clear Feature HALT to the Bulk-Out endpoint
*
* This is done in 3 steps, states:
* TSTATE_BBB_RESET1
* TSTATE_BBB_RESET2
* TSTATE_BBB_RESET3
*
* If the reset doesn't succeed, the device should be port reset.
*/
DPRINTF(UDMASS_BBB, ("%s: Bulk Reset\n",
USBDEVNAME(sc->sc_dev)));
sc->transfer_state = TSTATE_BBB_RESET1;
sc->transfer_status = status;
usbd_interface2device_handle(sc->iface, &dev);
/* reset is a class specific interface write */
sc->request.bmRequestType = UT_WRITE_CLASS_INTERFACE;
sc->request.bRequest = UR_BBB_RESET;
USETW(sc->request.wValue, 0);
USETW(sc->request.wIndex, sc->ifaceno);
USETW(sc->request.wLength, 0);
umass_setup_ctrl_transfer(sc, dev, &sc->request, NULL, 0, 0,
sc->transfer_xfer[XFER_BBB_RESET1]);
}
Static void
umass_bbb_transfer(struct umass_softc *sc, int lun, void *cmd, int cmdlen,
void *data, int datalen, int dir,
transfer_cb_f cb, void *priv)
{
static int dCBWtag = 42; /* unique for CBW of transfer */
DPRINTF(UDMASS_BBB,("%s: umass_bbb_transfer cmd=0x%02x\n",
USBDEVNAME(sc->sc_dev), *(u_char*)cmd));
KASSERT(sc->proto & PROTO_BBB,
("sc->proto == 0x%02x wrong for umass_bbb_transfer\n",
sc->proto));
/*
* Do a Bulk-Only transfer with cmdlen bytes from cmd, possibly
* a data phase of datalen bytes from/to the device and finally a
* csw read phase.
* If the data direction was inbound a maximum of datalen bytes
* is stored in the buffer pointed to by data.
*
* umass_bbb_transfer initialises the transfer and lets the state
* machine in umass_bbb_state handle the completion. It uses the
* following states:
* TSTATE_BBB_COMMAND
* -> TSTATE_BBB_DATA
* -> TSTATE_BBB_STATUS
* -> TSTATE_BBB_STATUS2
* -> TSTATE_BBB_IDLE
*
* An error in any of those states will invoke
* umass_bbb_reset.
*/
/* check the given arguments */
KASSERT(datalen == 0 || data != NULL,
("%s: datalen > 0, but no buffer",USBDEVNAME(sc->sc_dev)));
KASSERT(cmdlen <= CBWCDBLENGTH,
("%s: cmdlen exceeds CDB length in CBW (%d > %d)",
USBDEVNAME(sc->sc_dev), cmdlen, CBWCDBLENGTH));
KASSERT(dir == DIR_NONE || datalen > 0,
("%s: datalen == 0 while direction is not NONE\n",
USBDEVNAME(sc->sc_dev)));
KASSERT(datalen == 0 || dir != DIR_NONE,
("%s: direction is NONE while datalen is not zero\n",
USBDEVNAME(sc->sc_dev)));
KASSERT(sizeof(umass_bbb_cbw_t) == UMASS_BBB_CBW_SIZE,
("%s: CBW struct does not have the right size (%d vs. %d)\n",
USBDEVNAME(sc->sc_dev),
sizeof(umass_bbb_cbw_t), UMASS_BBB_CBW_SIZE));
KASSERT(sizeof(umass_bbb_csw_t) == UMASS_BBB_CSW_SIZE,
("%s: CSW struct does not have the right size (%d vs. %d)\n",
USBDEVNAME(sc->sc_dev),
sizeof(umass_bbb_csw_t), UMASS_BBB_CSW_SIZE));
/*
* Determine the direction of the data transfer and the length.
*
* dCBWDataTransferLength (datalen) :
* This field indicates the number of bytes of data that the host
* intends to transfer on the IN or OUT Bulk endpoint(as indicated by
* the Direction bit) during the execution of this command. If this
* field is set to 0, the device will expect that no data will be
* transferred IN or OUT during this command, regardless of the value
* of the Direction bit defined in dCBWFlags.
*
* dCBWFlags (dir) :
* The bits of the Flags field are defined as follows:
* Bits 0-6 reserved
* Bit 7 Direction - this bit shall be ignored if the
* dCBWDataTransferLength field is zero.
* 0 = data Out from host to device
* 1 = data In from device to host
*/
/* Fill in the Command Block Wrapper */
USETDW(sc->cbw.dCBWSignature, CBWSIGNATURE);
USETDW(sc->cbw.dCBWTag, dCBWtag);
dCBWtag++; /* cannot be done in macro (it will be done 4 times) */
USETDW(sc->cbw.dCBWDataTransferLength, datalen);
/* DIR_NONE is treated as DIR_OUT (0x00) */
sc->cbw.bCBWFlags = (dir == DIR_IN? CBWFLAGS_IN:CBWFLAGS_OUT);
sc->cbw.bCBWLUN = lun;
sc->cbw.bCDBLength = cmdlen;
bcopy(cmd, sc->cbw.CBWCDB, cmdlen);
DIF(UDMASS_BBB, umass_bbb_dump_cbw(sc, &sc->cbw));
/* store the details for the data transfer phase */
sc->transfer_dir = dir;
sc->transfer_data = data;
sc->transfer_datalen = datalen;
sc->transfer_actlen = 0;
sc->transfer_cb = cb;
sc->transfer_priv = priv;
sc->transfer_status = STATUS_CMD_OK;
/* move from idle to the command state */
sc->transfer_state = TSTATE_BBB_COMMAND;
/* Send the CBW from host to device via bulk-out endpoint. */
if (umass_setup_transfer(sc, sc->bulkout_pipe,
&sc->cbw, UMASS_BBB_CBW_SIZE, 0,
sc->transfer_xfer[XFER_BBB_CBW])) {
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
}
}
Static void
umass_bbb_state(usbd_xfer_handle xfer, usbd_private_handle priv,
usbd_status err)
{
struct umass_softc *sc = (struct umass_softc *) priv;
usbd_xfer_handle next_xfer;
KASSERT(sc->proto & PROTO_BBB,
("sc->proto == 0x%02x wrong for umass_bbb_state\n",sc->proto));
if (sc->sc_dying)
return;
/*
* State handling for BBB transfers.
*
* The subroutine is rather long. It steps through the states given in
* Annex A of the Bulk-Only specification.
* Each state first does the error handling of the previous transfer
* and then prepares the next transfer.
* Each transfer is done asynchroneously so after the request/transfer
* has been submitted you will find a 'return;'.
*/
DPRINTF(UDMASS_BBB, ("%s: Handling BBB state %d (%s), xfer=%p, %s\n",
USBDEVNAME(sc->sc_dev), sc->transfer_state,
states[sc->transfer_state], xfer, usbd_errstr(err)));
switch (sc->transfer_state) {
/***** Bulk Transfer *****/
case TSTATE_BBB_COMMAND:
/* Command transport phase, error handling */
if (err) {
DPRINTF(UDMASS_BBB, ("%s: failed to send CBW\n",
USBDEVNAME(sc->sc_dev)));
/* If the device detects that the CBW is invalid, then
* the device may STALL both bulk endpoints and require
* a Bulk-Reset
*/
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
}
/* Data transport phase, setup transfer */
sc->transfer_state = TSTATE_BBB_DATA;
if (sc->transfer_dir == DIR_IN) {
if (umass_setup_transfer(sc, sc->bulkin_pipe,
sc->data_buffer, sc->transfer_datalen,
USBD_SHORT_XFER_OK | USBD_NO_COPY,
sc->transfer_xfer[XFER_BBB_DATA]))
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
} else if (sc->transfer_dir == DIR_OUT) {
memcpy(sc->data_buffer, sc->transfer_data,
sc->transfer_datalen);
if (umass_setup_transfer(sc, sc->bulkout_pipe,
sc->data_buffer, sc->transfer_datalen,
USBD_NO_COPY,/* fixed length transfer */
sc->transfer_xfer[XFER_BBB_DATA]))
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
} else {
DPRINTF(UDMASS_BBB, ("%s: no data phase\n",
USBDEVNAME(sc->sc_dev)));
}
/* FALLTHROUGH if no data phase, err == 0 */
case TSTATE_BBB_DATA:
/* Command transport phase, error handling (ignored if no data
* phase (fallthrough from previous state)) */
if (sc->transfer_dir != DIR_NONE) {
/* retrieve the length of the transfer that was done */
usbd_get_xfer_status(xfer, NULL, NULL,
&sc->transfer_actlen, NULL);
if (err) {
DPRINTF(UDMASS_BBB, ("%s: Data-%s %db failed, "
"%s\n", USBDEVNAME(sc->sc_dev),
(sc->transfer_dir == DIR_IN?"in":"out"),
sc->transfer_datalen,usbd_errstr(err)));
if (err == USBD_STALLED) {
umass_clear_endpoint_stall(sc,
(sc->transfer_dir == DIR_IN?
sc->bulkin:sc->bulkout),
(sc->transfer_dir == DIR_IN?
sc->bulkin_pipe:sc->bulkout_pipe),
TSTATE_BBB_DCLEAR,
sc->transfer_xfer[XFER_BBB_DCLEAR]);
return;
} else {
/* Unless the error is a pipe stall the
* error is fatal.
*/
umass_bbb_reset(sc,STATUS_WIRE_FAILED);
return;
}
}
}
if (sc->transfer_dir == DIR_IN)
memcpy(sc->transfer_data, sc->data_buffer,
sc->transfer_actlen);
DIF(UDMASS_BBB, if (sc->transfer_dir == DIR_IN)
umass_dump_buffer(sc, sc->transfer_data,
sc->transfer_datalen, 48));
/* FALLTHROUGH, err == 0 (no data phase or successfull) */
case TSTATE_BBB_DCLEAR: /* stall clear after data phase */
case TSTATE_BBB_SCLEAR: /* stall clear after status phase */
/* Reading of CSW after bulk stall condition in data phase
* (TSTATE_BBB_DATA2) or bulk-in stall condition after
* reading CSW (TSTATE_BBB_SCLEAR).
* In the case of no data phase or successfull data phase,
* err == 0 and the following if block is passed.
*/
if (err) { /* should not occur */
/* try the transfer below, even if clear stall failed */
DPRINTF(UDMASS_BBB, ("%s: bulk-%s stall clear failed"
", %s\n", USBDEVNAME(sc->sc_dev),
(sc->transfer_dir == DIR_IN? "in":"out"),
usbd_errstr(err)));
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
}
/* Status transport phase, setup transfer */
if (sc->transfer_state == TSTATE_BBB_COMMAND ||
sc->transfer_state == TSTATE_BBB_DATA ||
sc->transfer_state == TSTATE_BBB_DCLEAR) {
/* After no data phase, successfull data phase and
* after clearing bulk-in/-out stall condition
*/
sc->transfer_state = TSTATE_BBB_STATUS1;
next_xfer = sc->transfer_xfer[XFER_BBB_CSW1];
} else {
/* After first attempt of fetching CSW */
sc->transfer_state = TSTATE_BBB_STATUS2;
next_xfer = sc->transfer_xfer[XFER_BBB_CSW2];
}
/* Read the Command Status Wrapper via bulk-in endpoint. */
if (umass_setup_transfer(sc, sc->bulkin_pipe,
&sc->csw, UMASS_BBB_CSW_SIZE, 0,
next_xfer)) {
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
}
return;
case TSTATE_BBB_STATUS1: /* first attempt */
case TSTATE_BBB_STATUS2: /* second attempt */
/* Status transfer, error handling */
if (err) {
DPRINTF(UDMASS_BBB, ("%s: Failed to read CSW, %s%s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err),
(sc->transfer_state == TSTATE_BBB_STATUS1?
", retrying":"")));
/* If this was the first attempt at fetching the CSW
* retry it, otherwise fail.
*/
if (sc->transfer_state == TSTATE_BBB_STATUS1) {
umass_clear_endpoint_stall(sc,
sc->bulkin, sc->bulkin_pipe,
TSTATE_BBB_SCLEAR,
sc->transfer_xfer[XFER_BBB_SCLEAR]);
return;
} else {
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
}
}
DIF(UDMASS_BBB, umass_bbb_dump_csw(sc, &sc->csw));
/* Check CSW and handle any error */
if (UGETDW(sc->csw.dCSWSignature) != CSWSIGNATURE) {
/* Invalid CSW: Wrong signature or wrong tag might
* indicate that the device is confused -> reset it.
*/
printf("%s: Invalid CSW: sig 0x%08x should be 0x%08x\n",
USBDEVNAME(sc->sc_dev),
UGETDW(sc->csw.dCSWSignature),
CSWSIGNATURE);
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
} else if (UGETDW(sc->csw.dCSWTag)
!= UGETDW(sc->cbw.dCBWTag)) {
printf("%s: Invalid CSW: tag %d should be %d\n",
USBDEVNAME(sc->sc_dev),
UGETDW(sc->csw.dCSWTag),
UGETDW(sc->cbw.dCBWTag));
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
/* CSW is valid here */
} else if (sc->csw.bCSWStatus > CSWSTATUS_PHASE) {
printf("%s: Invalid CSW: status %d > %d\n",
USBDEVNAME(sc->sc_dev),
sc->csw.bCSWStatus,
CSWSTATUS_PHASE);
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
} else if (sc->csw.bCSWStatus == CSWSTATUS_PHASE) {
printf("%s: Phase Error, residue = %d\n",
USBDEVNAME(sc->sc_dev),
UGETDW(sc->csw.dCSWDataResidue));
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
} else if (sc->transfer_actlen > sc->transfer_datalen) {
/* Buffer overrun! Don't let this go by unnoticed */
panic("%s: transferred %d bytes instead of %d bytes\n",
USBDEVNAME(sc->sc_dev),
sc->transfer_actlen, sc->transfer_datalen);
} else if (sc->transfer_datalen - sc->transfer_actlen
!= UGETDW(sc->csw.dCSWDataResidue)) {
DPRINTF(UDMASS_BBB, ("%s: actlen=%d != residue=%d\n",
USBDEVNAME(sc->sc_dev),
sc->transfer_datalen - sc->transfer_actlen,
UGETDW(sc->csw.dCSWDataResidue)));
umass_bbb_reset(sc, STATUS_WIRE_FAILED);
return;
} else if (sc->csw.bCSWStatus == CSWSTATUS_FAILED) {
DPRINTF(UDMASS_BBB, ("%s: Command Failed, res = %d\n",
USBDEVNAME(sc->sc_dev),
UGETDW(sc->csw.dCSWDataResidue)));
/* SCSI command failed but transfer was succesful */
sc->transfer_state = TSTATE_IDLE;
sc->transfer_cb(sc, sc->transfer_priv,
UGETDW(sc->csw.dCSWDataResidue),
STATUS_CMD_FAILED);
return;
} else { /* success */
sc->transfer_state = TSTATE_IDLE;
sc->transfer_cb(sc, sc->transfer_priv,
UGETDW(sc->csw.dCSWDataResidue),
STATUS_CMD_OK);
return;
}
/***** Bulk Reset *****/
case TSTATE_BBB_RESET1:
if (err)
printf("%s: BBB reset failed, %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
umass_clear_endpoint_stall(sc,
sc->bulkin, sc->bulkin_pipe, TSTATE_BBB_RESET2,
sc->transfer_xfer[XFER_BBB_RESET2]);
return;
case TSTATE_BBB_RESET2:
if (err) /* should not occur */
printf("%s: BBB bulk-in clear stall failed, %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
/* no error recovery, otherwise we end up in a loop */
umass_clear_endpoint_stall(sc,
sc->bulkout, sc->bulkout_pipe, TSTATE_BBB_RESET3,
sc->transfer_xfer[XFER_BBB_RESET3]);
return;
case TSTATE_BBB_RESET3:
if (err) /* should not occur */
printf("%s: BBB bulk-out clear stall failed, %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
/* no error recovery, otherwise we end up in a loop */
sc->transfer_state = TSTATE_IDLE;
if (sc->transfer_priv) {
sc->transfer_cb(sc, sc->transfer_priv,
sc->transfer_datalen,
sc->transfer_status);
}
return;
/***** Default *****/
default:
panic("%s: Unknown state %d\n",
USBDEVNAME(sc->sc_dev), sc->transfer_state);
}
}
/*
* Command/Bulk/Interrupt (CBI) specific functions
*/
Static int
umass_cbi_adsc(struct umass_softc *sc, char *buffer, int buflen,
usbd_xfer_handle xfer)
{
usbd_device_handle dev;
KASSERT(sc->proto & (PROTO_CBI|PROTO_CBI_I),
("sc->proto == 0x%02x wrong for umass_cbi_adsc\n",sc->proto));
usbd_interface2device_handle(sc->iface, &dev);
sc->request.bmRequestType = UT_WRITE_CLASS_INTERFACE;
sc->request.bRequest = UR_CBI_ADSC;
USETW(sc->request.wValue, 0);
USETW(sc->request.wIndex, sc->ifaceno);
USETW(sc->request.wLength, buflen);
return umass_setup_ctrl_transfer(sc, dev, &sc->request, buffer,
buflen, 0, xfer);
}
Static void
umass_cbi_reset(struct umass_softc *sc, int status)
{
int i;
# define SEND_DIAGNOSTIC_CMDLEN 12
KASSERT(sc->proto & (PROTO_CBI|PROTO_CBI_I),
("sc->proto == 0x%02x wrong for umass_cbi_reset\n",sc->proto));
if (sc->sc_dying)
return;
/*
* Command Block Reset Protocol
*
* First send a reset request to the device. Then clear
* any possibly stalled bulk endpoints.
* This is done in 3 steps, states:
* TSTATE_CBI_RESET1
* TSTATE_CBI_RESET2
* TSTATE_CBI_RESET3
*
* If the reset doesn't succeed, the device should be port reset.
*/
DPRINTF(UDMASS_CBI, ("%s: CBI Reset\n",
USBDEVNAME(sc->sc_dev)));
KASSERT(sizeof(sc->cbl) >= SEND_DIAGNOSTIC_CMDLEN,
("%s: CBL struct is too small (%d < %d)\n",
USBDEVNAME(sc->sc_dev),
sizeof(sc->cbl), SEND_DIAGNOSTIC_CMDLEN));
sc->transfer_state = TSTATE_CBI_RESET1;
sc->transfer_status = status;
/* The 0x1d code is the SEND DIAGNOSTIC command. To distingiush between
* the two the last 10 bytes of the cbl is filled with 0xff (section
* 2.2 of the CBI spec).
*/
sc->cbl[0] = 0x1d; /* Command Block Reset */
sc->cbl[1] = 0x04;
for (i = 2; i < SEND_DIAGNOSTIC_CMDLEN; i++)
sc->cbl[i] = 0xff;
umass_cbi_adsc(sc, sc->cbl, SEND_DIAGNOSTIC_CMDLEN,
sc->transfer_xfer[XFER_CBI_RESET1]);
/* XXX if the command fails we should reset the port on the bub */
}
Static void
umass_cbi_transfer(struct umass_softc *sc, int lun,
void *cmd, int cmdlen, void *data, int datalen, int dir,
transfer_cb_f cb, void *priv)
{
DPRINTF(UDMASS_CBI,("%s: umass_cbi_transfer cmd=0x%02x, len=%d\n",
USBDEVNAME(sc->sc_dev), *(u_char*)cmd, datalen));
KASSERT(sc->proto & (PROTO_CBI|PROTO_CBI_I),
("sc->proto == 0x%02x wrong for umass_cbi_transfer\n",
sc->proto));
if (sc->sc_dying)
return;
/*
* Do a CBI transfer with cmdlen bytes from cmd, possibly
* a data phase of datalen bytes from/to the device and finally a
* csw read phase.
* If the data direction was inbound a maximum of datalen bytes
* is stored in the buffer pointed to by data.
*
* umass_cbi_transfer initialises the transfer and lets the state
* machine in umass_cbi_state handle the completion. It uses the
* following states:
* TSTATE_CBI_COMMAND
* -> XXX fill in
*
* An error in any of those states will invoke
* umass_cbi_reset.
*/
/* check the given arguments */
KASSERT(datalen == 0 || data != NULL,
("%s: datalen > 0, but no buffer",USBDEVNAME(sc->sc_dev)));
KASSERT(datalen == 0 || dir != DIR_NONE,
("%s: direction is NONE while datalen is not zero\n",
USBDEVNAME(sc->sc_dev)));
/* store the details for the data transfer phase */
sc->transfer_dir = dir;
sc->transfer_data = data;
sc->transfer_datalen = datalen;
sc->transfer_actlen = 0;
sc->transfer_cb = cb;
sc->transfer_priv = priv;
sc->transfer_status = STATUS_CMD_OK;
/* move from idle to the command state */
sc->transfer_state = TSTATE_CBI_COMMAND;
/* Send the Command Block from host to device via control endpoint. */
if (umass_cbi_adsc(sc, cmd, cmdlen, sc->transfer_xfer[XFER_CBI_CB]))
umass_cbi_reset(sc, STATUS_WIRE_FAILED);
}
Static void
umass_cbi_state(usbd_xfer_handle xfer, usbd_private_handle priv,
usbd_status err)
{
struct umass_softc *sc = (struct umass_softc *) priv;
KASSERT(sc->proto & (PROTO_CBI|PROTO_CBI_I),
("sc->proto == 0x%02x wrong for umass_cbi_state\n", sc->proto));
if (sc->sc_dying)
return;
/*
* State handling for CBI transfers.
*/
DPRINTF(UDMASS_CBI, ("%s: Handling CBI state %d (%s), xfer=%p, %s\n",
USBDEVNAME(sc->sc_dev), sc->transfer_state,
states[sc->transfer_state], xfer, usbd_errstr(err)));
switch (sc->transfer_state) {
/***** CBI Transfer *****/
case TSTATE_CBI_COMMAND:
if (err == USBD_STALLED) {
DPRINTF(UDMASS_CBI, ("%s: Command Transport failed\n",
USBDEVNAME(sc->sc_dev)));
/* Status transport by control pipe (section 2.3.2.1).
* The command contained in the command block failed.
*
* The control pipe has already been unstalled by the
* USB stack.
* Section 2.4.3.1.1 states that the bulk in endpoints
* should not stalled at this point.
*/
sc->transfer_state = TSTATE_IDLE;
sc->transfer_cb(sc, sc->transfer_priv,
sc->transfer_datalen,
STATUS_CMD_FAILED);
return;
} else if (err) {
DPRINTF(UDMASS_CBI, ("%s: failed to send ADSC\n",
USBDEVNAME(sc->sc_dev)));
umass_cbi_reset(sc, STATUS_WIRE_FAILED);
return;
}
sc->transfer_state = TSTATE_CBI_DATA;
if (sc->transfer_dir == DIR_IN) {
if (umass_setup_transfer(sc, sc->bulkin_pipe,
sc->transfer_data, sc->transfer_datalen,
USBD_SHORT_XFER_OK | USBD_NO_COPY,
sc->transfer_xfer[XFER_CBI_DATA]))
umass_cbi_reset(sc, STATUS_WIRE_FAILED);
} else if (sc->transfer_dir == DIR_OUT) {
memcpy(sc->data_buffer, sc->transfer_data,
sc->transfer_datalen);
if (umass_setup_transfer(sc, sc->bulkout_pipe,
sc->transfer_data, sc->transfer_datalen,
USBD_NO_COPY,/* fixed length transfer */
sc->transfer_xfer[XFER_CBI_DATA]))
umass_cbi_reset(sc, STATUS_WIRE_FAILED);
} else if (sc->proto & PROTO_CBI_I) {
DPRINTF(UDMASS_CBI, ("%s: no data phase\n",
USBDEVNAME(sc->sc_dev)));
sc->transfer_state = TSTATE_CBI_STATUS;
if (umass_setup_transfer(sc, sc->intrin_pipe,
&sc->sbl, sizeof(sc->sbl),
0, /* fixed length transfer */
sc->transfer_xfer[XFER_CBI_STATUS])){
umass_cbi_reset(sc, STATUS_WIRE_FAILED);
}
} else {
DPRINTF(UDMASS_CBI, ("%s: no data phase\n",
USBDEVNAME(sc->sc_dev)));
/* No command completion interrupt. Request
* sense data.
*/
sc->transfer_state = TSTATE_IDLE;
sc->transfer_cb(sc, sc->transfer_priv,
0, STATUS_CMD_UNKNOWN);
}
return;
case TSTATE_CBI_DATA:
/* retrieve the length of the transfer that was done */
usbd_get_xfer_status(xfer,NULL,NULL,&sc->transfer_actlen,NULL);
DPRINTF(UDMASS_CBI, ("%s: CBI_DATA actlen=%d\n",
USBDEVNAME(sc->sc_dev), sc->transfer_actlen));
if (err) {
DPRINTF(UDMASS_CBI, ("%s: Data-%s %db failed, "
"%s\n", USBDEVNAME(sc->sc_dev),
(sc->transfer_dir == DIR_IN?"in":"out"),
sc->transfer_datalen,usbd_errstr(err)));
if (err == USBD_STALLED) {
umass_clear_endpoint_stall(sc,
sc->bulkin, sc->bulkin_pipe,
TSTATE_CBI_DCLEAR,
sc->transfer_xfer[XFER_CBI_DCLEAR]);
} else {
umass_cbi_reset(sc, STATUS_WIRE_FAILED);
}
return;
}
if (sc->transfer_dir == DIR_IN)
memcpy(sc->transfer_data, sc->data_buffer,
sc->transfer_actlen);
DIF(UDMASS_CBI, if (sc->transfer_dir == DIR_IN)
umass_dump_buffer(sc, sc->transfer_data,
sc->transfer_actlen, 48));
if (sc->proto & PROTO_CBI_I) {
sc->transfer_state = TSTATE_CBI_STATUS;
memset(&sc->sbl, 0, sizeof(sc->sbl));
if (umass_setup_transfer(sc, sc->intrin_pipe,
&sc->sbl, sizeof(sc->sbl),
0, /* fixed length transfer */
sc->transfer_xfer[XFER_CBI_STATUS])){
umass_cbi_reset(sc, STATUS_WIRE_FAILED);
}
} else {
/* No command completion interrupt. Request
* sense to get status of command.
*/
sc->transfer_state = TSTATE_IDLE;
sc->transfer_cb(sc, sc->transfer_priv,
sc->transfer_datalen - sc->transfer_actlen,
STATUS_CMD_UNKNOWN);
}
return;
case TSTATE_CBI_STATUS:
if (err) {
DPRINTF(UDMASS_CBI, ("%s: Status Transport failed\n",
USBDEVNAME(sc->sc_dev)));
/* Status transport by interrupt pipe (section 2.3.2.2).
*/
if (err == USBD_STALLED) {
umass_clear_endpoint_stall(sc,
sc->intrin, sc->intrin_pipe,
TSTATE_CBI_SCLEAR,
sc->transfer_xfer[XFER_CBI_SCLEAR]);
} else {
umass_cbi_reset(sc, STATUS_WIRE_FAILED);
}
return;
}
/* Dissect the information in the buffer */
if (sc->proto & PROTO_UFI) {
int status;
/* Section 3.4.3.1.3 specifies that the UFI command
* protocol returns an ASC and ASCQ in the interrupt
* data block.
*/
DPRINTF(UDMASS_CBI, ("%s: UFI CCI, ASC = 0x%02x, "
"ASCQ = 0x%02x\n",
USBDEVNAME(sc->sc_dev),
sc->sbl.ufi.asc, sc->sbl.ufi.ascq));
if (sc->sbl.ufi.asc == 0 && sc->sbl.ufi.ascq == 0)
status = STATUS_CMD_OK;
else
status = STATUS_CMD_FAILED;
/* No sense, command successfull */
} else {
/* Command Interrupt Data Block */
DPRINTF(UDMASS_CBI, ("%s: type=0x%02x, value=0x%02x\n",
USBDEVNAME(sc->sc_dev),
sc->sbl.common.type, sc->sbl.common.value));
if (sc->sbl.common.type == IDB_TYPE_CCI) {
int err;
if ((sc->sbl.common.value&IDB_VALUE_STATUS_MASK)
== IDB_VALUE_PASS) {
err = STATUS_CMD_OK;
} else if ((sc->sbl.common.value & IDB_VALUE_STATUS_MASK)
== IDB_VALUE_FAIL ||
(sc->sbl.common.value & IDB_VALUE_STATUS_MASK)
== IDB_VALUE_PERSISTENT) {
err = STATUS_CMD_FAILED;
} else {
err = STATUS_WIRE_FAILED;
}
sc->transfer_state = TSTATE_IDLE;
sc->transfer_cb(sc, sc->transfer_priv,
sc->transfer_datalen,
err);
}
}
return;
case TSTATE_CBI_DCLEAR:
if (err) { /* should not occur */
printf("%s: CBI bulk-in/out stall clear failed, %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
umass_cbi_reset(sc, STATUS_WIRE_FAILED);
}
sc->transfer_state = TSTATE_IDLE;
sc->transfer_cb(sc, sc->transfer_priv,
sc->transfer_datalen,
STATUS_CMD_FAILED);
return;
case TSTATE_CBI_SCLEAR:
if (err) /* should not occur */
printf("%s: CBI intr-in stall clear failed, %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
/* Something really bad is going on. Reset the device */
umass_cbi_reset(sc, STATUS_CMD_FAILED);
return;
/***** CBI Reset *****/
case TSTATE_CBI_RESET1:
if (err)
printf("%s: CBI reset failed, %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
umass_clear_endpoint_stall(sc,
sc->bulkin, sc->bulkin_pipe, TSTATE_CBI_RESET2,
sc->transfer_xfer[XFER_CBI_RESET2]);
return;
case TSTATE_CBI_RESET2:
if (err) /* should not occur */
printf("%s: CBI bulk-in stall clear failed, %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
/* no error recovery, otherwise we end up in a loop */
umass_clear_endpoint_stall(sc,
sc->bulkout, sc->bulkout_pipe, TSTATE_CBI_RESET3,
sc->transfer_xfer[XFER_CBI_RESET3]);
return;
case TSTATE_CBI_RESET3:
if (err) /* should not occur */
printf("%s: CBI bulk-out stall clear failed, %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
/* no error recovery, otherwise we end up in a loop */
sc->transfer_state = TSTATE_IDLE;
if (sc->transfer_priv) {
sc->transfer_cb(sc, sc->transfer_priv,
sc->transfer_datalen,
sc->transfer_status);
}
return;
/***** Default *****/
default:
panic("%s: Unknown state %d\n",
USBDEVNAME(sc->sc_dev), sc->transfer_state);
}
}
usbd_status
umass_bbb_get_max_lun(struct umass_softc *sc, u_int8_t *maxlun)
{
usbd_device_handle dev;
usb_device_request_t req;
usbd_status err;
usb_interface_descriptor_t *id;
*maxlun = 0; /* Default to 0. */
DPRINTF(UDMASS_BBB, ("%s: Get Max Lun\n", USBDEVNAME(sc->sc_dev)));
usbd_interface2device_handle(sc->iface, &dev);
id = usbd_get_interface_descriptor(sc->iface);
/* The Get Max Lun command is a class-specific request. */
req.bmRequestType = UT_READ_CLASS_INTERFACE;
req.bRequest = UR_BBB_GET_MAX_LUN;
USETW(req.wValue, 0);
USETW(req.wIndex, id->bInterfaceNumber);
USETW(req.wLength, 1);
err = usbd_do_request(dev, &req, maxlun);
switch (err) {
case USBD_NORMAL_COMPLETION:
DPRINTF(UDMASS_BBB, ("%s: Max Lun %d\n",
USBDEVNAME(sc->sc_dev), *maxlun));
break;
case USBD_STALLED:
/*
* Device doesn't support Get Max Lun request.
*/
err = USBD_NORMAL_COMPLETION;
DPRINTF(UDMASS_BBB, ("%s: Get Max Lun not supported\n",
USBDEVNAME(sc->sc_dev)));
break;
case USBD_SHORT_XFER:
/*
* XXX This must mean Get Max Lun is not supported, too!
*/
err = USBD_NORMAL_COMPLETION;
DPRINTF(UDMASS_BBB, ("%s: Get Max Lun SHORT_XFER\n",
USBDEVNAME(sc->sc_dev)));
break;
default:
printf("%s: Get Max Lun failed: %s\n",
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
/* XXX Should we port_reset the device? */
break;
}
return (err);
}
#ifdef UMASS_DEBUG
Static void
umass_bbb_dump_cbw(struct umass_softc *sc, umass_bbb_cbw_t *cbw)
{
int clen = cbw->bCDBLength;
int dlen = UGETDW(cbw->dCBWDataTransferLength);
u_int8_t *c = cbw->CBWCDB;
int tag = UGETDW(cbw->dCBWTag);
int flags = cbw->bCBWFlags;
DPRINTF(UDMASS_BBB, ("%s: CBW %d: cmd = %db "
"(0x%02x%02x%02x%02x%02x%02x%s), "
"data = %d bytes, dir = %s\n",
USBDEVNAME(sc->sc_dev), tag, clen,
c[0], c[1], c[2], c[3], c[4], c[5], (clen > 6? "...":""),
dlen, (flags == CBWFLAGS_IN? "in":
(flags == CBWFLAGS_OUT? "out":"<invalid>"))));
}
Static void
umass_bbb_dump_csw(struct umass_softc *sc, umass_bbb_csw_t *csw)
{
int sig = UGETDW(csw->dCSWSignature);
int tag = UGETW(csw->dCSWTag);
int res = UGETDW(csw->dCSWDataResidue);
int status = csw->bCSWStatus;
DPRINTF(UDMASS_BBB, ("%s: CSW %d: sig = 0x%08x (%s), tag = %d, "
"res = %d, status = 0x%02x (%s)\n", USBDEVNAME(sc->sc_dev),
tag, sig, (sig == CSWSIGNATURE? "valid":"invalid"),
tag, res,
status, (status == CSWSTATUS_GOOD? "good":
(status == CSWSTATUS_FAILED? "failed":
(status == CSWSTATUS_PHASE? "phase":"<invalid>")))));
}
Static void
umass_dump_buffer(struct umass_softc *sc, u_int8_t *buffer, int buflen,
int printlen)
{
int i, j;
char s1[40];
char s2[40];
char s3[5];
s1[0] = '\0';
s3[0] = '\0';
sprintf(s2, " buffer=%p, buflen=%d", buffer, buflen);
for (i = 0; i < buflen && i < printlen; i++) {
j = i % 16;
if (j == 0 && i != 0) {
DPRINTF(UDMASS_GEN, ("%s: 0x %s%s\n",
USBDEVNAME(sc->sc_dev), s1, s2));
s2[0] = '\0';
}
sprintf(&s1[j*2], "%02x", buffer[i] & 0xff);
}
if (buflen > printlen)
sprintf(s3, " ...");
DPRINTF(UDMASS_GEN, ("%s: 0x %s%s%s\n",
USBDEVNAME(sc->sc_dev), s1, s2, s3));
}
#endif
Reference in New Issue View Git Blame Copy Permalink