/* $OpenBSD: umass.c,v 1.66 2014/07/12 18:48:52 tedu Exp $ */ /* $NetBSD: umass.c,v 1.116 2004/06/30 05:53:46 mycroft Exp $ */ /* * Copyright (c) 2003 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /*- * Copyright (c) 1999 MAEKAWA Masahide , * Nick Hibma * 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/devclass_docs/usb_msc_overview_1.2.pdf * http://www.usb.org/developers/devclass_docs/usbmassbulk_10.pdf * http://www.usb.org/developers/devclass_docs/usb_msc_cbi_1.1.pdf * http://www.usb.org/developers/devclass_docs/usbmass-ufi10.pdf */ /* * Ported to NetBSD by Lennart Augustsson . * Parts of the code written by Jason R. Thorpe . */ /* * 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 #include #include #include #include #include #include #include #undef KASSERT #define KASSERT(cond, msg) #include #include #include #include #include #include #include #include #include #include #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 */ int umass_match(struct device *, void *, void *); void umass_attach(struct device *, struct device *, void *); int umass_detach(struct device *, int); int umass_activate(struct device *, int); struct cfdriver umass_cd = { NULL, "umass", DV_DULL }; const struct cfattach umass_ca = { sizeof(struct umass_softc), umass_match, umass_attach, umass_detach, umass_activate, }; void umass_disco(struct umass_softc *sc); /* generic transfer functions */ usbd_status umass_polled_transfer(struct umass_softc *sc, struct usbd_xfer *xfer); usbd_status umass_setup_transfer(struct umass_softc *sc, struct usbd_pipe *pipe, void *buffer, int buflen, int flags, struct usbd_xfer *xfer); usbd_status umass_setup_ctrl_transfer(struct umass_softc *sc, usb_device_request_t *req, void *buffer, int buflen, int flags, struct usbd_xfer *xfer); void umass_clear_endpoint_stall(struct umass_softc *sc, int endpt, struct usbd_xfer *xfer); void umass_adjust_transfer(struct umass_softc *); #if 0 void umass_reset(struct umass_softc *sc, transfer_cb_f cb, void *priv); #endif /* Bulk-Only related functions */ void umass_bbb_transfer(struct umass_softc *, int, void *, int, void *, int, int, u_int, umass_callback, void *); void umass_bbb_reset(struct umass_softc *, int); void umass_bbb_state(struct usbd_xfer *, void *, usbd_status); u_int8_t umass_bbb_get_max_lun(struct umass_softc *); /* CBI related functions */ void umass_cbi_transfer(struct umass_softc *, int, void *, int, void *, int, int, u_int, umass_callback, void *); void umass_cbi_reset(struct umass_softc *, int); void umass_cbi_state(struct usbd_xfer *, void *, usbd_status); int umass_cbi_adsc(struct umass_softc *, char *, int, struct usbd_xfer *); 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 */ void umass_bbb_dump_cbw(struct umass_softc *sc, struct umass_bbb_cbw *cbw); void umass_bbb_dump_csw(struct umass_softc *sc, struct umass_bbb_csw *csw); void umass_dump_buffer(struct umass_softc *sc, u_int8_t *buffer, int buflen, int printlen); #endif /* * USB device probe/attach/detach */ int umass_match(struct device *parent, void *match, void *aux) { struct usb_attach_arg *uaa = aux; 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); } void umass_attach(struct device *parent, struct device *self, void *aux) { struct umass_softc *sc = (struct umass_softc *)self; struct usb_attach_arg *uaa = aux; const struct umass_quirk *quirk; usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; const char *sWire, *sCommand; usbd_status err; int i, bno, error; 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) 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", sc->sc_dev.dv_xname, id->bInterfaceProtocol)); return; } } 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", sc->sc_dev.dv_xname, id->bInterfaceSubClass)); return; } } 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", sc->sc_dev.dv_xname, sCommand, sWire); if (quirk != NULL && quirk->uq_init != NULL) { err = (*quirk->uq_init)(sc); if (err) { umass_disco(sc); return; } } /* * 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", sc->sc_dev.dv_xname); 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, sc->sc_epaddr[UMASS_BULKIN], sc->sc_epaddr[UMASS_BULKOUT], sc->sc_epaddr[UMASS_INTRIN])); return; } /* * Get the maximum LUN supported by the device. */ if (sc->sc_wire == UMASS_WPROTO_BBB) { sc->maxlun = umass_bbb_get_max_lun(sc); } else { sc->maxlun = 0; } /* Open the bulk-in and -out pipe */ DPRINTF(UDMASS_USB, ("%s: opening iface %p epaddr %d for BULKOUT\n", sc->sc_dev.dv_xname, sc->sc_iface, sc->sc_epaddr[UMASS_BULKOUT])); 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", sc->sc_dev.dv_xname, sc->sc_epaddr[UMASS_BULKOUT])); umass_disco(sc); return; } DPRINTF(UDMASS_USB, ("%s: opening iface %p epaddr %d for BULKIN\n", sc->sc_dev.dv_xname, sc->sc_iface, sc->sc_epaddr[UMASS_BULKIN])); 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", sc->sc_dev.dv_xname, sc->sc_epaddr[UMASS_BULKIN])); umass_disco(sc); 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) { DPRINTF(UDMASS_USB, ("%s: opening iface %p epaddr %d for INTRIN\n", sc->sc_dev.dv_xname, sc->sc_iface, sc->sc_epaddr[UMASS_INTRIN])); 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", sc->sc_dev.dv_xname, sc->sc_epaddr[UMASS_INTRIN])); umass_disco(sc); 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] == NULL) { DPRINTF(UDMASS_USB, ("%s: Out of memory\n", sc->sc_dev.dv_xname)); umass_disco(sc); 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); 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); return; } error = 0; switch (sc->sc_cmd) { case UMASS_CPROTO_RBC: case UMASS_CPROTO_SCSI: error = umass_scsi_attach(sc); break; case UMASS_CPROTO_UFI: case UMASS_CPROTO_ATAPI: error = umass_atapi_attach(sc); break; case UMASS_CPROTO_ISD_ATA: printf("%s: isdata not configured\n", sc->sc_dev.dv_xname); break; default: printf("%s: command protocol=0x%x not supported\n", sc->sc_dev.dv_xname, sc->sc_cmd); umass_disco(sc); return; } if (error) { printf("%s: bus attach failed\n", sc->sc_dev.dv_xname); umass_disco(sc); return; } DPRINTF(UDMASS_GEN, ("%s: Attach finished\n", sc->sc_dev.dv_xname)); } int umass_detach(struct device *self, int flags) { struct umass_softc *sc = (struct umass_softc *)self; struct umassbus_softc *scbus; int rv = 0, i, s; DPRINTF(UDMASS_USB, ("%s: detached\n", sc->sc_dev.dv_xname)); /* 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]); } /* Do we really need reference counting? Perhaps in ioctl() */ s = splusb(); if (--sc->sc_refcnt >= 0) { #ifdef DIAGNOSTIC printf("%s: waiting for refcnt\n", sc->sc_dev.dv_xname); #endif /* Wait for processes to go away. */ usb_detach_wait(&sc->sc_dev); } /* Free the buffers via callback. */ if (sc->transfer_state != TSTATE_IDLE && sc->transfer_priv) { sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, sc->transfer_datalen, STATUS_WIRE_FAILED); sc->transfer_priv = NULL; } splx(s); scbus = sc->bus; if (scbus != NULL) { if (scbus->sc_child != NULL) rv = config_detach(scbus->sc_child, flags); free(scbus, M_DEVBUF, 0); sc->bus = NULL; } if (rv != 0) return (rv); umass_disco(sc); return (rv); } int umass_activate(struct device *dev, int 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", sc->sc_dev.dv_xname, act)); switch (act) { case DVACT_DEACTIVATE: usbd_deactivate(sc->sc_udev); if (scbus == NULL || scbus->sc_child == NULL) break; rv = config_deactivate(scbus->sc_child); DPRINTF(UDMASS_USB, ("%s: umass_activate: child " "returned %d\n", sc->sc_dev.dv_xname, rv)); break; default: rv = config_activate_children(dev, act); break; } return (rv); } 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]); sc->sc_pipe[i] = NULL; } } } /* * Generic functions to handle transfers */ usbd_status umass_polled_transfer(struct umass_softc *sc, struct usbd_xfer *xfer) { usbd_status err; if (usbd_is_dying(sc->sc_udev)) return (USBD_IOERROR); /* * If a polled transfer is already in progress, preserve the new * struct usbd_xfer and run it after the running one completes. * This converts the recursive calls into the umass_*_state callbacks * into iteration, preventing us from running out of stack under * error conditions. */ if (sc->polling_depth) { if (sc->next_polled_xfer) panic("%s: got polled xfer %p, but %p already " "pending\n", sc->sc_dev.dv_xname, xfer, sc->next_polled_xfer); DPRINTF(UDMASS_XFER, ("%s: saving polled xfer %p\n", sc->sc_dev.dv_xname, xfer)); sc->next_polled_xfer = xfer; return (USBD_IN_PROGRESS); } sc->polling_depth++; start_next_xfer: DPRINTF(UDMASS_XFER, ("%s: start polled xfer %p\n", sc->sc_dev.dv_xname, xfer)); err = usbd_transfer(xfer); if (err && err != USBD_IN_PROGRESS && sc->next_polled_xfer == NULL) { DPRINTF(UDMASS_BBB, ("%s: failed to setup transfer, %s\n", sc->sc_dev.dv_xname, usbd_errstr(err))); sc->polling_depth--; return (err); } if (err && err != USBD_IN_PROGRESS) { DPRINTF(UDMASS_XFER, ("umass_polled_xfer %p has error %s\n", xfer, usbd_errstr(err))); } if (sc->next_polled_xfer != NULL) { DPRINTF(UDMASS_XFER, ("umass_polled_xfer running next " "transaction %p\n", sc->next_polled_xfer)); xfer = sc->next_polled_xfer; sc->next_polled_xfer = NULL; goto start_next_xfer; } sc->polling_depth--; return (USBD_NORMAL_COMPLETION); } usbd_status umass_setup_transfer(struct umass_softc *sc, struct usbd_pipe *pipe, void *buffer, int buflen, int flags, struct usbd_xfer *xfer) { usbd_status err; if (usbd_is_dying(sc->sc_udev)) return (USBD_IOERROR); /* Initialise 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); if (sc->sc_udev->bus->use_polling) { DPRINTF(UDMASS_XFER,("%s: start polled xfer buffer=%p " "buflen=%d flags=0x%x timeout=%d\n", sc->sc_dev.dv_xname, buffer, buflen, flags | sc->sc_xfer_flags, sc->timeout)); err = umass_polled_transfer(sc, xfer); } else { err = usbd_transfer(xfer); DPRINTF(UDMASS_XFER,("%s: start xfer buffer=%p buflen=%d " "flags=0x%x timeout=%d\n", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, usbd_errstr(err))); return (err); } return (USBD_NORMAL_COMPLETION); } usbd_status umass_setup_ctrl_transfer(struct umass_softc *sc, usb_device_request_t *req, void *buffer, int buflen, int flags, struct usbd_xfer *xfer) { usbd_status err; if (usbd_is_dying(sc->sc_udev)) return (USBD_IOERROR); /* Initialise a USB control transfer and then schedule it */ usbd_setup_default_xfer(xfer, sc->sc_udev, (void *) sc, USBD_DEFAULT_TIMEOUT, req, buffer, buflen, flags, sc->sc_methods->wire_state); if (sc->sc_udev->bus->use_polling) { DPRINTF(UDMASS_XFER,("%s: start polled ctrl xfer buffer=%p " "buflen=%d flags=0x%x\n", sc->sc_dev.dv_xname, buffer, buflen, flags)); err = umass_polled_transfer(sc, xfer); } else { DPRINTF(UDMASS_XFER,("%s: start ctrl xfer buffer=%p buflen=%d " "flags=0x%x\n", sc->sc_dev.dv_xname, buffer, buflen, flags)); err = usbd_transfer(xfer); } if (err && err != USBD_IN_PROGRESS) { DPRINTF(UDMASS_BBB, ("%s: failed to setup ctrl transfer, %s\n", sc->sc_dev.dv_xname, usbd_errstr(err))); /* do not reset, as this would make us loop */ return (err); } return (USBD_NORMAL_COMPLETION); } void umass_adjust_transfer(struct umass_softc *sc) { switch (sc->sc_cmd) { case UMASS_CPROTO_UFI: sc->cbw.bCDBLength = UFI_COMMAND_LENGTH; /* Adjust the length field in certain scsi commands. */ switch (sc->cbw.CBWCDB[0]) { case INQUIRY: if (sc->transfer_datalen > 36) { sc->transfer_datalen = 36; sc->cbw.CBWCDB[4] = 36; } break; case MODE_SENSE_BIG: if (sc->transfer_datalen > 8) { sc->transfer_datalen = 8; sc->cbw.CBWCDB[7] = 0; sc->cbw.CBWCDB[8] = 8; } break; case REQUEST_SENSE: if (sc->transfer_datalen > 18) { sc->transfer_datalen = 18; sc->cbw.CBWCDB[4] = 18; } break; } break; case UMASS_CPROTO_ATAPI: sc->cbw.bCDBLength = UFI_COMMAND_LENGTH; break; } } void umass_clear_endpoint_stall(struct umass_softc *sc, int endpt, struct usbd_xfer *xfer) { if (usbd_is_dying(sc->sc_udev)) return; DPRINTF(UDMASS_BBB, ("%s: Clear endpoint 0x%02x stall\n", sc->sc_dev.dv_xname, 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 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 */ 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 (usbd_is_dying(sc->sc_udev)) 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", sc->sc_dev.dv_xname)); 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]); } 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 */ usbd_status err; DPRINTF(UDMASS_BBB,("%s: umass_bbb_transfer cmd=0x%02x\n", sc->sc_dev.dv_xname, *(u_char *)cmd)); KASSERT(sc->sc_wire & UMASS_WPROTO_BBB, ("sc->sc_wire == 0x%02x wrong for umass_bbb_transfer\n", sc->sc_wire)); if (usbd_is_dying(sc->sc_udev)) { sc->polled_xfer_status = USBD_IOERROR; return; } /* 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",sc->sc_dev.dv_xname)); KASSERT(cmdlen <= CBWCDBLENGTH, ("%s: cmdlen exceeds CDB length in CBW (%d > %d)", sc->sc_dev.dv_xname, cmdlen, CBWCDBLENGTH)); KASSERT(dir == DIR_NONE || datalen > 0, ("%s: datalen == 0 while direction is not NONE\n", sc->sc_dev.dv_xname)); KASSERT(datalen == 0 || dir != DIR_NONE, ("%s: direction is NONE while datalen is not zero\n", sc->sc_dev.dv_xname)); KASSERT(sizeof(struct umass_bbb_cbw) == UMASS_BBB_CBW_SIZE, ("%s: CBW struct does not have the right size (%d vs. %d)\n", sc->sc_dev.dv_xname, sizeof(struct umass_bbb_cbw), UMASS_BBB_CBW_SIZE)); KASSERT(sizeof(struct umass_bbb_csw) == UMASS_BBB_CSW_SIZE, ("%s: CSW struct does not have the right size (%d vs. %d)\n", sc->sc_dev.dv_xname, sizeof(struct umass_bbb_csw), 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; bzero(sc->cbw.CBWCDB, sizeof(sc->cbw.CBWCDB)); 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. */ umass_adjust_transfer(sc); if ((err = 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); if (sc->sc_udev->bus->use_polling) sc->polled_xfer_status = err; } void umass_bbb_state(struct usbd_xfer *xfer, void *priv, usbd_status err) { struct umass_softc *sc = (struct umass_softc *) priv; struct usbd_xfer *next_xfer; KASSERT(sc->sc_wire & UMASS_WPROTO_BBB, ("sc->sc_wire == 0x%02x wrong for umass_bbb_state\n", sc->sc_wire)); if (usbd_is_dying(sc->sc_udev)) 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 asynchronously 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname)); /* 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", sc->sc_dev.dv_xname)); } /* 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); DPRINTF(UDMASS_BBB, ("%s: BBB_DATA actlen=%d\n", sc->sc_dev.dv_xname, sc->transfer_actlen)); if (err) { DPRINTF(UDMASS_BBB, ("%s: Data-%s %d failed, " "%s\n", sc->sc_dev.dv_xname, (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]); } else { /* Unless the error is a pipe stall the * error is fatal. */ umass_bbb_reset(sc,STATUS_WIRE_FAILED); } return; } } /* FALLTHROUGH, err == 0 (no data phase or successful) */ case TSTATE_BBB_DCLEAR: /* stall clear after data phase */ 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 successful) */ 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 successful data phase, * err == 0 and the following if block is passed. */ if (err) { /* should not occur */ printf("%s: BBB bulk-%s stall clear failed, %s\n", sc->sc_dev.dv_xname, (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, successful 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", sc->sc_dev.dv_xname, 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); /* Translate invalid command-status tags */ if (sc->sc_quirks & UMASS_QUIRK_WRONG_CSWTAG) USETDW(sc->csw.dCSWTag, UGETDW(sc->cbw.dCBWTag)); /* 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, UGETDW(sc->csw.dCSWDataResidue))); /* SCSI command failed but transfer was successful */ 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, sc->transfer_state); } } /* * Command/Bulk/Interrupt (CBI) specific functions */ int umass_cbi_adsc(struct umass_softc *sc, char *buffer, int buflen, struct usbd_xfer *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); } 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 (usbd_is_dying(sc->sc_udev)) 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", sc->sc_dev.dv_xname)); KASSERT(sizeof(sc->cbl) >= SEND_DIAGNOSTIC_CMDLEN, ("%s: CBL struct is too small (%d < %d)\n", sc->sc_dev.dv_xname, 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 distinguish 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 */ } 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) { usbd_status err; DPRINTF(UDMASS_CBI,("%s: umass_cbi_transfer cmd=0x%02x, len=%d\n", sc->sc_dev.dv_xname, *(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 (usbd_is_dying(sc->sc_udev)) { sc->polled_xfer_status = USBD_IOERROR; 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",sc->sc_dev.dv_xname)); KASSERT(datalen == 0 || dir != DIR_NONE, ("%s: direction is NONE while datalen is not zero\n", sc->sc_dev.dv_xname)); /* 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. */ sc->cbw.bCDBLength = cmdlen; bzero(sc->cbw.CBWCDB, sizeof(sc->cbw.CBWCDB)); memcpy(sc->cbw.CBWCDB, cmd, cmdlen); umass_adjust_transfer(sc); if ((err = umass_cbi_adsc(sc, (void *)sc->cbw.CBWCDB, sc->cbw.bCDBLength, sc->transfer_xfer[XFER_CBI_CB]))) umass_cbi_reset(sc, STATUS_WIRE_FAILED); if (sc->sc_udev->bus->use_polling) sc->polled_xfer_status = err; } void umass_cbi_state(struct usbd_xfer *xfer, void *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 (usbd_is_dying(sc->sc_udev)) return; /* * State handling for CBI transfers. */ DPRINTF(UDMASS_CBI, ("%s: Handling CBI state %d (%s), xfer=%p, %s\n", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname)); /* 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", sc->sc_dev.dv_xname)); umass_cbi_reset(sc, STATUS_WIRE_FAILED); return; } /* Data transport phase, setup transfer */ sc->transfer_state = TSTATE_CBI_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_CBI_DATA])) umass_cbi_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_CBI_DATA])) umass_cbi_reset(sc, STATUS_WIRE_FAILED); return; } else { DPRINTF(UDMASS_CBI, ("%s: no data phase\n", sc->sc_dev.dv_xname)); } /* FALLTHROUGH if no data phase, err == 0 */ case TSTATE_CBI_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); DPRINTF(UDMASS_CBI, ("%s: CBI_DATA actlen=%d\n", sc->sc_dev.dv_xname, sc->transfer_actlen)); if (err) { DPRINTF(UDMASS_CBI, ("%s: Data-%s %d failed, " "%s\n", sc->sc_dev.dv_xname, (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, (sc->transfer_dir == DIR_IN? UMASS_BULKIN:UMASS_BULKOUT), sc->transfer_xfer[XFER_CBI_DCLEAR]); } else { /* Unless the error is a pipe stall the * error is fatal. */ 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)); /* Status phase */ 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", sc->sc_dev.dv_xname)); /* 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 */ { u_int32_t actlen; usbd_get_xfer_status(xfer, NULL, NULL, &actlen, NULL); DPRINTF(UDMASS_CBI, ("%s: CBI_STATUS actlen=%d\n", sc->sc_dev.dv_xname, actlen)); if (actlen != 2) break; } 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", sc->sc_dev.dv_xname, sc->sbl.ufi.asc, sc->sbl.ufi.ascq)); if ((sc->sbl.ufi.asc == 0 && sc->sbl.ufi.ascq == 0) || sc->sc_sense) status = STATUS_CMD_OK; else status = STATUS_CMD_FAILED; /* No autosense, command successful */ sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, sc->transfer_datalen - sc->transfer_actlen, status); } else { /* Command Interrupt Data Block */ DPRINTF(UDMASS_CBI, ("%s: type=0x%02x, value=0x%02x\n", sc->sc_dev.dv_xname, sc->sbl.common.type, sc->sbl.common.value)); if (sc->sbl.common.type == IDB_TYPE_CCI) { int status; switch (sc->sbl.common.value & IDB_VALUE_STATUS_MASK) { case IDB_VALUE_PASS: status = STATUS_CMD_OK; break; case IDB_VALUE_FAIL: case IDB_VALUE_PERSISTENT: status = STATUS_CMD_FAILED; break; case IDB_VALUE_PHASE: default: status = STATUS_WIRE_FAILED; break; } sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, sc->transfer_datalen - sc->transfer_actlen, status); } } return; case TSTATE_CBI_DCLEAR: if (err) { /* should not occur */ printf("%s: CBI bulk-in/out stall clear failed, %s\n", sc->sc_dev.dv_xname, usbd_errstr(err)); umass_cbi_reset(sc, STATUS_WIRE_FAILED); } else { 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", sc->sc_dev.dv_xname, usbd_errstr(err)); umass_cbi_reset(sc, STATUS_WIRE_FAILED); } else { sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, sc->transfer_datalen, STATUS_CMD_FAILED); } return; /***** CBI Reset *****/ case TSTATE_CBI_RESET1: if (err) printf("%s: CBI reset failed, %s\n", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname, sc->transfer_state); } } u_int8_t umass_bbb_get_max_lun(struct umass_softc *sc) { usb_device_request_t req; usbd_status err; u_int8_t maxlun = 0; u_int8_t buf = 0; DPRINTF(UDMASS_BBB, ("%s: Get Max Lun\n", sc->sc_dev.dv_xname)); /* 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_flags(sc->sc_udev, &req, &buf, USBD_SHORT_XFER_OK, 0, USBD_DEFAULT_TIMEOUT); switch (err) { case USBD_NORMAL_COMPLETION: maxlun = buf; break; default: /* XXX Should we port_reset the device? */ DPRINTF(UDMASS_BBB, ("%s: Get Max Lun not supported (%s)\n", sc->sc_dev.dv_xname, usbd_errstr(err))); break; } DPRINTF(UDMASS_BBB, ("%s: Max Lun %d\n", sc->sc_dev.dv_xname, maxlun)); return (maxlun); } #ifdef UMASS_DEBUG void umass_bbb_dump_cbw(struct umass_softc *sc, struct umass_bbb_cbw *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", sc->sc_dev.dv_xname, 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":"")))); } void umass_bbb_dump_csw(struct umass_softc *sc, struct umass_bbb_csw *csw) { int sig = UGETDW(csw->dCSWSignature); int tag = UGETDW(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", sc->sc_dev.dv_xname, tag, sig, (sig == CSWSIGNATURE? "valid":"invalid"), tag, res, status, (status == CSWSTATUS_GOOD? "good": (status == CSWSTATUS_FAILED? "failed": (status == CSWSTATUS_PHASE? "phase":""))))); } 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'; snprintf(s2, sizeof 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", sc->sc_dev.dv_xname, s1, s2)); s2[0] = '\0'; } snprintf(&s1[j*2], sizeof s1 - j*2, "%02x", buffer[i] & 0xff); } if (buflen > printlen) snprintf(s3, sizeof s3, " ..."); DPRINTF(UDMASS_GEN, ("%s: 0x %s%s%s\n", sc->sc_dev.dv_xname, s1, s2, s3)); } #endif