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NetBSD/sys/dev/usb/umass.c

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/* $NetBSD: umass.c,v 1.89 2002/09/27 15:37:37 provos 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 <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: umass.c,v 1.89 2002/09/27 15:37:37 provos Exp $");
#include "atapibus.h"
#include "scsibus.h"
#include "wd.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/umassvar.h>
#include <dev/usb/umass_quirks.h>
#include <dev/usb/umass_scsipi.h>
#include <dev/usb/umass_isdata.h>
#ifdef UMASS_DEBUG
int umassdebug = 0;
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
/* USB device probe/attach/detach functions */
USB_DECLARE_DRIVER(umass);
Static void umass_disco(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,
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, int endpt,
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_transfer(struct umass_softc *, int, void *, int, void *,
int, int, u_int, umass_callback, void *);
Static void umass_bbb_reset(struct umass_softc *, int);
Static void umass_bbb_state(usbd_xfer_handle, usbd_private_handle, usbd_status);
usbd_status umass_bbb_get_max_lun(struct umass_softc *, u_int8_t *);
/* CBI related functions */
Static void umass_cbi_transfer(struct umass_softc *, int, void *, int, void *,
int, int, u_int, umass_callback, void *);
Static void umass_cbi_reset(struct umass_softc *, int);
Static void umass_cbi_state(usbd_xfer_handle, usbd_private_handle, usbd_status);
Static int umass_cbi_adsc(struct umass_softc *, char *, int, usbd_xfer_handle);
const struct umass_wire_methods umass_bbb_methods = {
umass_bbb_transfer,
umass_bbb_reset,
umass_bbb_state
};
const struct umass_wire_methods umass_cbi_methods = {
umass_cbi_transfer,
umass_cbi_reset,
umass_cbi_state
};
#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
/*
* USB device probe/attach/detach
*/
USB_MATCH(umass)
{
USB_MATCH_START(umass, uaa);
const struct umass_quirk *quirk;
usb_interface_descriptor_t *id;
if (uaa->iface == NULL)
return (UMATCH_NONE);
quirk = umass_lookup(uaa->vendor, uaa->product);
if (quirk != NULL)
return (quirk->uq_match);
id = usbd_get_interface_descriptor(uaa->iface);
if (id == NULL || id->bInterfaceClass != UICLASS_MASS)
return (UMATCH_NONE);
switch (id->bInterfaceSubClass) {
case UISUBCLASS_RBC:
case UISUBCLASS_SFF8020I:
case UISUBCLASS_QIC157:
case UISUBCLASS_UFI:
case UISUBCLASS_SFF8070I:
case UISUBCLASS_SCSI:
break;
default:
return (UMATCH_IFACECLASS);
}
switch (id->bInterfaceProtocol) {
case UIPROTO_MASS_CBI_I:
case UIPROTO_MASS_CBI:
case UIPROTO_MASS_BBB_OLD:
case UIPROTO_MASS_BBB:
break;
default:
return (UMATCH_IFACECLASS_IFACESUBCLASS);
}
return (UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO);
}
USB_ATTACH(umass)
{
USB_ATTACH_START(umass, sc, uaa);
const struct umass_quirk *quirk;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
const char *sWire, *sCommand;
char devinfo[1024];
usbd_status err;
int i, bno, error;
usbd_devinfo(uaa->device, 0, devinfo);
USB_ATTACH_SETUP;
sc->sc_udev = uaa->device;
sc->sc_iface = uaa->iface;
sc->sc_ifaceno = uaa->ifaceno;
quirk = umass_lookup(uaa->vendor, uaa->product);
if (quirk != NULL) {
sc->sc_wire = quirk->uq_wire;
sc->sc_cmd = quirk->uq_cmd;
sc->sc_quirks = quirk->uq_flags;
sc->sc_busquirks = quirk->uq_busquirks;
if (quirk->uq_fixup != NULL)
(*quirk->uq_fixup)(sc);
} else {
sc->sc_wire = UMASS_WPROTO_UNSPEC;
sc->sc_cmd = UMASS_CPROTO_UNSPEC;
sc->sc_quirks = 0;
sc->sc_busquirks = 0;
}
id = usbd_get_interface_descriptor(sc->sc_iface);
if (id == NULL)
USB_ATTACH_ERROR_RETURN;
if (sc->sc_wire == UMASS_WPROTO_UNSPEC) {
switch (id->bInterfaceProtocol) {
case UIPROTO_MASS_CBI:
sc->sc_wire = UMASS_WPROTO_CBI;
break;
case UIPROTO_MASS_CBI_I:
sc->sc_wire = UMASS_WPROTO_CBI_I;
break;
case UIPROTO_MASS_BBB:
case UIPROTO_MASS_BBB_OLD:
sc->sc_wire = UMASS_WPROTO_BBB;
break;
default:
DPRINTF(UDMASS_GEN,
("%s: Unsupported wire protocol %u\n",
USBDEVNAME(sc->sc_dev),
id->bInterfaceProtocol));
USB_ATTACH_ERROR_RETURN;
}
}
/* XXX - Now unsupported CBI with CCI */
if (sc->sc_wire == UMASS_WPROTO_CBI_I)
sc->sc_wire = UMASS_WPROTO_CBI;
if (sc->sc_cmd == UMASS_CPROTO_UNSPEC) {
switch (id->bInterfaceSubClass) {
case UISUBCLASS_SCSI:
sc->sc_cmd = UMASS_CPROTO_SCSI;
break;
case UISUBCLASS_UFI:
sc->sc_cmd = UMASS_CPROTO_UFI;
break;
case UISUBCLASS_SFF8020I:
case UISUBCLASS_SFF8070I:
case UISUBCLASS_QIC157:
sc->sc_cmd = UMASS_CPROTO_ATAPI;
break;
case UISUBCLASS_RBC:
sc->sc_cmd = UMASS_CPROTO_RBC;
break;
default:
DPRINTF(UDMASS_GEN,
("%s: Unsupported command protocol %u\n",
USBDEVNAME(sc->sc_dev),
id->bInterfaceSubClass));
USB_ATTACH_ERROR_RETURN;
}
}
printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo);
switch (sc->sc_wire) {
case UMASS_WPROTO_CBI:
sWire = "CBI";
break;
case UMASS_WPROTO_CBI_I:
sWire = "CBI with CCI";
break;
case UMASS_WPROTO_BBB:
sWire = "Bulk-Only";
break;
default:
sWire = "unknown";
break;
}
switch (sc->sc_cmd) {
case UMASS_CPROTO_RBC:
sCommand = "RBC";
break;
case UMASS_CPROTO_SCSI:
sCommand = "SCSI";
break;
case UMASS_CPROTO_UFI:
sCommand = "UFI";
break;
case UMASS_CPROTO_ATAPI:
sCommand = "ATAPI";
break;
case UMASS_CPROTO_ISD_ATA:
sCommand = "ISD-ATA";
break;
default:
sCommand = "unknown";
break;
}
printf("%s: using %s over %s\n", USBDEVNAME(sc->sc_dev), sCommand,
sWire);
/*
* 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->sc_iface, i);
if (ed == NULL) {
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->sc_epaddr[UMASS_BULKIN] = ed->bEndpointAddress;
} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT
&& (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
sc->sc_epaddr[UMASS_BULKOUT] = ed->bEndpointAddress;
} else if (sc->sc_wire == UMASS_WPROTO_CBI_I
&& UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN
&& (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) {
sc->sc_epaddr[UMASS_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->sc_epaddr[UMASS_BULKIN] || !sc->sc_epaddr[UMASS_BULKOUT] ||
(sc->sc_wire == UMASS_WPROTO_CBI_I &&
!sc->sc_epaddr[UMASS_INTRIN])) {
DPRINTF(UDMASS_USB, ("%s: endpoint not found %u/%u/%u\n",
USBDEVNAME(sc->sc_dev), sc->sc_epaddr[UMASS_BULKIN],
sc->sc_epaddr[UMASS_BULKOUT],
sc->sc_epaddr[UMASS_INTRIN]));
USB_ATTACH_ERROR_RETURN;
}
/*
* Get the maximum LUN supported by the device.
*/
if (sc->sc_wire == UMASS_WPROTO_BBB &&
!(sc->sc_quirks & UMASS_QUIRK_NO_MAX_LUN)) {
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->sc_iface, sc->sc_epaddr[UMASS_BULKOUT],
USBD_EXCLUSIVE_USE,
&sc->sc_pipe[UMASS_BULKOUT]);
if (err) {
DPRINTF(UDMASS_USB, ("%s: cannot open %u-out pipe (bulk)\n",
USBDEVNAME(sc->sc_dev), sc->sc_epaddr[UMASS_BULKOUT]));
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
err = usbd_open_pipe(sc->sc_iface, sc->sc_epaddr[UMASS_BULKIN],
USBD_EXCLUSIVE_USE, &sc->sc_pipe[UMASS_BULKIN]);
if (err) {
DPRINTF(UDMASS_USB, ("%s: could not open %u-in pipe (bulk)\n",
USBDEVNAME(sc->sc_dev), sc->sc_epaddr[UMASS_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->sc_wire == UMASS_WPROTO_CBI_I) {
err = usbd_open_pipe(sc->sc_iface, sc->sc_epaddr[UMASS_INTRIN],
USBD_EXCLUSIVE_USE, &sc->sc_pipe[UMASS_INTRIN]);
if (err) {
DPRINTF(UDMASS_USB, ("%s: couldn't open %u-in (intr)\n",
USBDEVNAME(sc->sc_dev),
sc->sc_epaddr[UMASS_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->sc_wire) {
case UMASS_WPROTO_BBB:
bno = XFER_BBB_DATA;
goto dalloc;
case UMASS_WPROTO_CBI:
bno = XFER_CBI_DATA;
goto dalloc;
case UMASS_WPROTO_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 */
switch (sc->sc_wire) {
case UMASS_WPROTO_BBB:
sc->sc_methods = &umass_bbb_methods;
break;
case UMASS_WPROTO_CBI:
case UMASS_WPROTO_CBI_I:
sc->sc_methods = &umass_cbi_methods;
break;
default:
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
if (quirk != NULL && quirk->uq_init != NULL) {
err = (*quirk->uq_init)(sc);
if (err) {
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
}
error = 0;
switch (sc->sc_cmd) {
case UMASS_CPROTO_RBC:
case UMASS_CPROTO_SCSI:
#if NSCSIBUS > 0
error = umass_scsi_attach(sc);
#else
printf("%s: atapibus not configured\n", USBDEVNAME(sc->sc_dev));
#endif
break;
case UMASS_CPROTO_UFI:
case UMASS_CPROTO_ATAPI:
#if NATAPIBUS > 0
error = umass_atapi_attach(sc);
#else
printf("%s: scsibus not configured\n", USBDEVNAME(sc->sc_dev));
#endif
break;
case UMASS_CPROTO_ISD_ATA:
#if NWD > 0
error = umass_isdata_attach(sc);
#else
printf("%s: isdata not configured\n", USBDEVNAME(sc->sc_dev));
#endif
break;
default:
printf("%s: command protocol=0x%x not supported\n",
USBDEVNAME(sc->sc_dev), sc->sc_cmd);
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
if (error) {
printf("%s: bus attach failed\n", USBDEVNAME(sc->sc_dev));
umass_disco(sc);
USB_ATTACH_ERROR_RETURN;
}
usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
USBDEV(sc->sc_dev));
DPRINTF(UDMASS_GEN, ("%s: Attach finished\n", USBDEVNAME(sc->sc_dev)));
USB_ATTACH_SUCCESS_RETURN;
}
USB_DETACH(umass)
{
USB_DETACH_START(umass, sc);
struct umassbus_softc *scbus = sc->bus;
int rv = 0, i;
DPRINTF(UDMASS_USB, ("%s: detached\n", USBDEVNAME(sc->sc_dev)));
/* Abort the pipes to wake up any waiting processes. */
for (i = 0 ; i < UMASS_NEP ; i++) {
if (sc->sc_pipe[i] != NULL)
usbd_abort_pipe(sc->sc_pipe[i]);
}
#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
if (scbus != NULL) {
if (scbus->sc_child != NULL)
rv = config_detach(scbus->sc_child, flags);
free(scbus, M_DEVBUF);
sc->bus = NULL;
}
if (rv != 0)
return (rv);
umass_disco(sc);
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
USBDEV(sc->sc_dev));
return (rv);
}
int
umass_activate(struct device *dev, enum devact act)
{
struct umass_softc *sc = (struct umass_softc *)dev;
struct umassbus_softc *scbus = sc->bus;
int rv = 0;
DPRINTF(UDMASS_USB, ("%s: umass_activate: %d\n",
USBDEVNAME(sc->sc_dev), act));
switch (act) {
case DVACT_ACTIVATE:
rv = EOPNOTSUPP;
break;
case DVACT_DEACTIVATE:
sc->sc_dying = 1;
if (scbus == NULL || scbus->sc_child == NULL)
break;
rv = config_deactivate(scbus->sc_child);
DPRINTF(UDMASS_USB, ("%s: umass_activate: child "
"returned %d\n", USBDEVNAME(sc->sc_dev), rv));
break;
}
return (rv);
}
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. */
for (i = 0 ; i < UMASS_NEP ; i++) {
if (sc->sc_pipe[i] != NULL)
usbd_close_pipe(sc->sc_pipe[i]);
}
}
/*
* 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->sc_methods->wire_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, 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, sc->sc_udev, (void *) sc, sc->timeout,
req, buffer, buflen, flags, sc->sc_methods->wire_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, int endpt,
usbd_xfer_handle xfer)
{
if (sc->sc_dying)
return;
DPRINTF(UDMASS_BBB, ("%s: Clear endpoint 0x%02x stall\n",
USBDEVNAME(sc->sc_dev), sc->sc_epaddr[endpt]));
usbd_clear_endpoint_toggle(sc->sc_pipe[endpt]);
sc->sc_req.bmRequestType = UT_WRITE_ENDPOINT;
sc->sc_req.bRequest = UR_CLEAR_FEATURE;
USETW(sc->sc_req.wValue, UF_ENDPOINT_HALT);
USETW(sc->sc_req.wIndex, sc->sc_epaddr[endpt]);
USETW(sc->sc_req.wLength, 0);
umass_setup_ctrl_transfer(sc, &sc->sc_req, 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)
{
KASSERT(sc->sc_wire & UMASS_WPROTO_BBB,
("sc->sc_wire == 0x%02x wrong for umass_bbb_reset\n",
sc->sc_wire));
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;
/* reset is a class specific interface write */
sc->sc_req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
sc->sc_req.bRequest = UR_BBB_RESET;
USETW(sc->sc_req.wValue, 0);
USETW(sc->sc_req.wIndex, sc->sc_ifaceno);
USETW(sc->sc_req.wLength, 0);
umass_setup_ctrl_transfer(sc, &sc->sc_req, 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, u_int timeout,
umass_callback 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->sc_wire & UMASS_WPROTO_BBB,
("sc->sc_wire == 0x%02x wrong for umass_bbb_transfer\n",
sc->sc_wire));
/* Be a little generous. */
sc->timeout = timeout + USBD_DEFAULT_TIMEOUT;
/*
* 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;
memcpy(sc->cbw.CBWCDB, cmd, 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->sc_pipe[UMASS_BULKOUT],
&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->sc_wire & UMASS_WPROTO_BBB,
("sc->sc_wire == 0x%02x wrong for umass_bbb_state\n",
sc->sc_wire));
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->sc_pipe[UMASS_BULKIN],
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->sc_pipe[UMASS_BULKOUT],
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 %d failed, "
"%s\n", USBDEVNAME(sc->sc_dev),
(sc->transfer_dir == DIR_IN?"in":"out"),
sc->transfer_datalen,usbd_errstr(err)));
if (err == USBD_STALLED) {
sc->transfer_state = TSTATE_BBB_DCLEAR;
umass_clear_endpoint_stall(sc,
(sc->transfer_dir == DIR_IN?
UMASS_BULKIN:UMASS_BULKOUT),
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->sc_pipe[UMASS_BULKIN],
&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) {
sc->transfer_state = TSTATE_BBB_SCLEAR;
umass_clear_endpoint_stall(sc, UMASS_BULKIN,
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));
/* Translate weird command-status signatures. */
if ((sc->sc_quirks & UMASS_QUIRK_WRONG_CSWSIG) &&
UGETDW(sc->csw.dCSWSignature) == CSWSIGNATURE_OLYMPUS_C1)
USETDW(sc->csw.dCSWSignature, CSWSIGNATURE);
/* 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",
USBDEVNAME(sc->sc_dev),
sc->transfer_actlen, sc->transfer_datalen);
#if 0
} 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;
#endif
} 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));
sc->transfer_state = TSTATE_BBB_RESET2;
umass_clear_endpoint_stall(sc, UMASS_BULKIN,
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 */
sc->transfer_state = TSTATE_BBB_RESET3;
umass_clear_endpoint_stall(sc, UMASS_BULKOUT,
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",
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)
{
KASSERT(sc->sc_wire & (UMASS_WPROTO_CBI|UMASS_WPROTO_CBI_I),
("sc->sc_wire == 0x%02x wrong for umass_cbi_adsc\n",
sc->sc_wire));
sc->sc_req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
sc->sc_req.bRequest = UR_CBI_ADSC;
USETW(sc->sc_req.wValue, 0);
USETW(sc->sc_req.wIndex, sc->sc_ifaceno);
USETW(sc->sc_req.wLength, buflen);
return umass_setup_ctrl_transfer(sc, &sc->sc_req, buffer,
buflen, 0, xfer);
}
Static void
umass_cbi_reset(struct umass_softc *sc, int status)
{
int i;
# define SEND_DIAGNOSTIC_CMDLEN 12
KASSERT(sc->sc_wire & (UMASS_WPROTO_CBI|UMASS_WPROTO_CBI_I),
("sc->sc_wire == 0x%02x wrong for umass_cbi_reset\n",
sc->sc_wire));
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,
u_int timeout, umass_callback 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->sc_wire & (UMASS_WPROTO_CBI|UMASS_WPROTO_CBI_I),
("sc->sc_wire == 0x%02x wrong for umass_cbi_transfer\n",
sc->sc_wire));
if (sc->sc_dying)
return;
/* Be a little generous. */
sc->timeout = timeout + USBD_DEFAULT_TIMEOUT;
/*
* 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->sc_wire & (UMASS_WPROTO_CBI|UMASS_WPROTO_CBI_I),
("sc->sc_wire == 0x%02x wrong for umass_cbi_state\n",
sc->sc_wire));
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->sc_pipe[UMASS_BULKIN],
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->sc_pipe[UMASS_BULKOUT],
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->sc_wire == UMASS_WPROTO_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->sc_pipe[UMASS_INTRIN],
&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 %d failed, "
"%s\n", USBDEVNAME(sc->sc_dev),
(sc->transfer_dir == DIR_IN?"in":"out"),
sc->transfer_datalen,usbd_errstr(err)));
if (err == USBD_STALLED) {
sc->transfer_state = TSTATE_CBI_DCLEAR;
umass_clear_endpoint_stall(sc, UMASS_BULKIN,
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->sc_wire == UMASS_WPROTO_CBI_I) {
sc->transfer_state = TSTATE_CBI_STATUS;
memset(&sc->sbl, 0, sizeof(sc->sbl));
if (umass_setup_transfer(sc, sc->sc_pipe[UMASS_INTRIN],
&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) {
sc->transfer_state = TSTATE_CBI_SCLEAR;
umass_clear_endpoint_stall(sc, UMASS_INTRIN,
sc->transfer_xfer[XFER_CBI_SCLEAR]);
} else {
umass_cbi_reset(sc, STATUS_WIRE_FAILED);
}
return;
}
/* Dissect the information in the buffer */
if (sc->sc_cmd == UMASS_CPROTO_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));
sc->transfer_state = TSTATE_CBI_RESET2;
umass_clear_endpoint_stall(sc, UMASS_BULKIN,
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 */
sc->transfer_state = TSTATE_CBI_RESET3;
umass_clear_endpoint_stall(sc, UMASS_BULKOUT,
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",
USBDEVNAME(sc->sc_dev), sc->transfer_state);
}
}
usbd_status
umass_bbb_get_max_lun(struct umass_softc *sc, u_int8_t *maxlun)
{
usb_device_request_t req;
usbd_status err;
*maxlun = 0; /* Default to 0. */
DPRINTF(UDMASS_BBB, ("%s: Get Max Lun\n", USBDEVNAME(sc->sc_dev)));
/* 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, sc->sc_ifaceno);
USETW(req.wLength, 1);
err = usbd_do_request(sc->sc_udev, &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: cmdlen=%d "
"(0x%02x%02x%02x%02x%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],
c[6], c[7], c[8], c[9],
(clen > 10? "...":""),
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
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