/*- * 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. * * $FreeBSD$ * $NetBSD: umass.c,v 1.28 2000/04/02 23:46:53 augustss Exp $ */ /* * Ported to NetBSD by Lennart Augustsson . * Parts of the code written my Jason R. Thorpe . */ /* * The PDF documentation can be found at http://www.usb.org/developers/ */ /* * 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 * - UFI (floppy command set) * - 8070i (ATAPI) * * UFI and 8070i (ATAPI) are transformed versions of the SCSI command set. The * sc->transform method is used to convert the commands into the appropriate * format (if at all necessary). For example, UFI 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 (ATAPI) * * 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. */ /* * XXX Currently CBI with CCI is not supported because it bombs the system * when the device is detached (low frequency interrupts are detached * too late. */ #undef CBI_I #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef UMASS_DEBUG #define DIF(m, x) if (umassdebug & (m)) do { x ; } while (0) #define DPRINTF(m, x) if (umassdebug & (m)) logprintf x #define UDMASS_GEN 0x00010000 /* general */ #define UDMASS_SCSI 0x00020000 /* scsi */ #define UDMASS_UFI 0x00040000 /* ufi command set */ #define UDMASS_ATAPI 0x00080000 /* 8070i command set */ #define UDMASS_CMD (UDMASS_SCSI|UDMASS_UFI|UDMASS_ATAPI) #define UDMASS_USB 0x00100000 /* USB general */ #define UDMASS_BBB 0x00200000 /* Bulk-Only transfers */ #define UDMASS_CBI 0x00400000 /* CBI transfers */ #define UDMASS_WIRE (UDMASS_BBB|UDMASS_CBI) #define UDMASS_ALL 0xffff0000 /* all of the above */ int umassdebug = UDMASS_ALL; #else #define DIF(m, x) /* nop */ #define DPRINTF(m, x) /* nop */ #endif /* Generic definitions */ /* Direction for umass_*_transfer */ #define DIR_NONE 0 #define DIR_IN 1 #define DIR_OUT 2 /* device name */ #define DEVNAME "umass" #define DEVNAME_SIM "umass-sim" #define UMASS_MAX_TRANSFER_SIZE 65536 #define UMASS_DEFAULT_TRANSFER_SPEED 150 /* in kb/s, conservative est. */ #define UMASS_FLOPPY_TRANSFER_SPEED 20 #define UMASS_ZIP100_TRANSFER_SPEED 650 #define UMASS_TIMEOUT 5000 /* msecs */ /* CAM specific definitions */ /* We only have one bus */ #define UMASS_SCSI_BUS 0 /* All USB drives are 'connected' to one SIM (SCSI controller). umass3 * ends up being target 3 on that SIM. When a request for target 3 * comes in we fetch the softc with devclass_get_softc(target_id). * * The SIM is the highest target number. This makes sure that umass0 corresponds * to target 0 on the USB SCSI bus. */ #ifndef UMASS_DEBUG #define UMASS_SCSIID_MAX 32 /* maximum number of drives expected */ #else /* while debugging avoid unnecessary clutter in the output at umass_cam_rescan * (XPT_PATH_INQ) */ #define UMASS_SCSIID_MAX 3 /* maximum number of drives expected */ #endif #define UMASS_SCSIID_HOST UMASS_SCSIID_MAX #define UMASS_SIM_UNIT 0 /* we use one sim for all drives */ #define MS_TO_TICKS(ms) ((ms) * hz / 1000) /* Bulk-Only features */ #define UR_BBB_RESET 0xff /* Bulk-Only reset */ #define UR_BBB_GET_MAX_LUN 0xfe /* Get maximum lun */ /* Command Block Wrapper */ typedef struct { uDWord dCBWSignature; # define CBWSIGNATURE 0x43425355 uDWord dCBWTag; uDWord dCBWDataTransferLength; uByte bCBWFlags; # define CBWFLAGS_OUT 0x00 # define CBWFLAGS_IN 0x80 uByte bCBWLUN; uByte bCDBLength; # define CBWCDBLENGTH 16 uByte CBWCDB[CBWCDBLENGTH]; } umass_bbb_cbw_t; #define UMASS_BBB_CBW_SIZE 31 /* Command Status Wrapper */ typedef struct { uDWord dCSWSignature; # define CSWSIGNATURE 0x53425355 uDWord dCSWTag; uDWord dCSWDataResidue; uByte bCSWStatus; # define CSWSTATUS_GOOD 0x0 # define CSWSTATUS_FAILED 0x1 # define CSWSTATUS_PHASE 0x2 } umass_bbb_csw_t; #define UMASS_BBB_CSW_SIZE 13 /* CBI features */ #define UR_CBI_ADSC 0x00 typedef unsigned char umass_cbi_cbl_t[16]; /* Command block */ typedef union { struct { unsigned char type; #define IDB_TYPE_CCI 0x00 unsigned char value; #define IDB_VALUE_PASS 0x00 #define IDB_VALUE_FAIL 0x01 #define IDB_VALUE_PHASE 0x02 #define IDB_VALUE_PERSISTENT 0x03 #define IDB_VALUE_STATUS_MASK 0x03 } common; struct { unsigned char asc; unsigned char ascq; } ufi; } umass_cbi_sbl_t; struct umass_softc; /* see below */ typedef void (*transfer_cb_f) (struct umass_softc *sc, void *priv, int residue, int status); #define STATUS_CMD_OK 0 /* everything ok */ #define STATUS_CMD_UNKNOWN 1 /* will have to fetch sense */ #define STATUS_CMD_FAILED 2 /* transfer was ok, command failed */ #define STATUS_WIRE_FAILED 3 /* couldn't even get command across */ typedef void (*wire_reset_f) (struct umass_softc *sc, int status); typedef void (*wire_transfer_f) (struct umass_softc *sc, int lun, void *cmd, int cmdlen, void *data, int datalen, int dir, transfer_cb_f cb, void *priv); typedef void (*wire_state_f) (usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status err); typedef int (*command_transform_f) (struct umass_softc *sc, unsigned char *cmd, int cmdlen, unsigned char **rcmd, int *rcmdlen); /* the per device structure */ struct umass_softc { USBBASEDEVICE sc_dev; /* base device */ usbd_device_handle sc_udev; /* USB device */ unsigned char flags; /* various device flags */ # define UMASS_FLAGS_GONE 0x01 /* devices is no more */ unsigned char drive; # define DRIVE_GENERIC 0 /* use defaults for this one */ # define ZIP_100 1 /* to be used for quirks */ # define ZIP_250 2 # define SHUTTLE_EUSB 3 # define INSYSTEM_USBCABLE 4 unsigned char quirks; /* The drive does not support Test Unit Ready. Convert to * Start Unit * Y-E Data, Zip 100 */ # define NO_TEST_UNIT_READY 0x01 /* The drive does not reset the Unit Attention state after * REQUEST SENSE has been sent. The INQUIRY command does not reset * the UA either, and so CAM runs in circles trying to retrieve the * initial INQUIRY data. * Y-E Data */ # define RS_NO_CLEAR_UA 0x02 /* The drive does not support START STOP. * Shuttle E-USB */ # define NO_START_STOP 0x04 unsigned int proto; # define PROTO_UNKNOWN 0x0000 /* unknown protocol */ # define PROTO_BBB 0x0001 /* USB wire protocol */ # define PROTO_CBI 0x0002 # define PROTO_CBI_I 0x0004 # define PROTO_WIRE 0x00ff /* USB wire protocol mask */ # define PROTO_SCSI 0x0100 /* command protocol */ # define PROTO_ATAPI 0x0200 # define PROTO_UFI 0x0400 # define PROTO_COMMAND 0xff00 /* command protocol mask */ usbd_interface_handle iface; /* Mass Storage interface */ int ifaceno; /* MS iface number */ u_int8_t bulkin; /* bulk-in Endpoint Address */ u_int8_t bulkout; /* bulk-out Endpoint Address */ u_int8_t intrin; /* intr-in Endp. (CBI) */ usbd_pipe_handle bulkin_pipe; usbd_pipe_handle bulkout_pipe; usbd_pipe_handle intrin_pipe; /* Reset the device in a wire protocol specific way */ wire_reset_f reset; /* The start of a wire transfer. It prepares the whole transfer (cmd, * data, and status stage) and initiates it. It is up to the state * machine (below) to handle the various stages and errors in these */ wire_transfer_f transfer; /* The state machine, handling the various states during a transfer */ wire_state_f state; /* The command transform function is used to conver the SCSI commands * into their derivatives, like UFI, ATAPI, and friends. */ command_transform_f transform; /* command transform */ /* Bulk specific variables for transfers in progress */ umass_bbb_cbw_t cbw; /* command block wrapper */ umass_bbb_csw_t csw; /* command status wrapper*/ /* CBI specific variables for transfers in progress */ umass_cbi_cbl_t cbl; /* command block */ umass_cbi_sbl_t sbl; /* status block */ /* generic variables for transfers in progress */ /* ctrl transfer requests */ usb_device_request_t request; /* xfer handles * Most of our operations are initiated from interrupt context, so * we need to avoid using the one that is in use. We want to avoid * allocating them in the interrupt context as well. */ /* indices into array below */ # define XFER_BBB_CBW 0 /* Bulk-Only */ # define XFER_BBB_DATA 1 # define XFER_BBB_DCLEAR 2 # define XFER_BBB_CSW1 3 # define XFER_BBB_CSW2 4 # define XFER_BBB_SCLEAR 5 # define XFER_BBB_RESET1 6 # define XFER_BBB_RESET2 7 # define XFER_BBB_RESET3 8 # define XFER_CBI_CB 0 /* CBI */ # define XFER_CBI_DATA 1 # define XFER_CBI_STATUS 2 # define XFER_CBI_DCLEAR 3 # define XFER_CBI_SCLEAR 4 # define XFER_CBI_RESET1 5 # define XFER_CBI_RESET2 6 # define XFER_CBI_RESET3 7 # define XFER_NR 9 /* maximum number */ usbd_xfer_handle transfer_xfer[XFER_NR]; /* for ctrl xfers */ int transfer_dir; /* data direction */ void *transfer_data; /* data buffer */ int transfer_datalen; /* (maximum) length */ int transfer_actlen; /* actual length */ transfer_cb_f transfer_cb; /* callback */ void *transfer_priv; /* for callback */ int transfer_status; int transfer_state; # define TSTATE_IDLE 0 # define TSTATE_BBB_COMMAND 1 /* CBW transfer */ # define TSTATE_BBB_DATA 2 /* Data transfer */ # define TSTATE_BBB_DCLEAR 3 /* clear endpt stall */ # define TSTATE_BBB_STATUS1 4 /* clear endpt stall */ # define TSTATE_BBB_SCLEAR 5 /* clear endpt stall */ # define TSTATE_BBB_STATUS2 6 /* CSW transfer */ # define TSTATE_BBB_RESET1 7 /* reset command */ # define TSTATE_BBB_RESET2 8 /* in clear stall */ # define TSTATE_BBB_RESET3 9 /* out clear stall */ # define TSTATE_CBI_COMMAND 10 /* command transfer */ # define TSTATE_CBI_DATA 11 /* data transfer */ # define TSTATE_CBI_STATUS 12 /* status transfer */ # define TSTATE_CBI_DCLEAR 13 /* clear ep stall */ # define TSTATE_CBI_SCLEAR 14 /* clear ep stall */ # define TSTATE_CBI_RESET1 15 /* reset command */ # define TSTATE_CBI_RESET2 16 /* in clear stall */ # define TSTATE_CBI_RESET3 17 /* out clear stall */ # define TSTATE_STATES 18 /* # of states above */ /* SCSI/CAM specific variables */ unsigned char cam_scsi_command[CAM_MAX_CDBLEN]; struct scsi_sense cam_scsi_sense; int transfer_speed; /* in kb/s */ int maxlun; /* maximum LUN number */ }; #ifdef UMASS_DEBUG char *states[TSTATE_STATES+1] = { /* should be kept in sync with the list at transfer_state */ "Idle", "BBB CBW", "BBB Data", "BBB Data bulk-in/-out clear stall", "BBB CSW, 1st attempt", "BBB CSW bulk-in clear stall", "BBB CSW, 2nd attempt", "BBB Reset", "BBB bulk-in clear stall", "BBB bulk-out clear stall", "CBI Command", "CBI Data", "CBI Status", "CBI Data bulk-in/-out clear stall", "CBI Status intr-in clear stall", "CBI Reset", "CBI bulk-in clear stall", "CBI bulk-out clear stall", NULL }; #endif struct cam_sim *umass_sim; /* SCSI Interface Module */ /* USB device probe/attach/detach functions */ USB_DECLARE_DRIVER(umass); Static int umass_match_proto (struct umass_softc *sc, usbd_interface_handle iface, usbd_device_handle udev); /* quirk functions */ Static void umass_init_shuttle (struct umass_softc *sc); /* generic transfer functions */ Static usbd_status umass_setup_transfer (struct umass_softc *sc, usbd_pipe_handle pipe, void *buffer, int buflen, int flags, usbd_xfer_handle xfer); Static usbd_status umass_setup_ctrl_transfer (struct umass_softc *sc, usbd_device_handle udev, usb_device_request_t *req, void *buffer, int buflen, int flags, usbd_xfer_handle xfer); Static void umass_clear_endpoint_stall (struct umass_softc *sc, u_int8_t endpt, usbd_pipe_handle pipe, int state, usbd_xfer_handle xfer); Static void umass_reset (struct umass_softc *sc, transfer_cb_f cb, void *priv); /* Bulk-Only related functions */ Static void umass_bbb_reset (struct umass_softc *sc, int status); Static void umass_bbb_transfer (struct umass_softc *sc, int lun, void *cmd, int cmdlen, void *data, int datalen, int dir, transfer_cb_f cb, void *priv); Static void umass_bbb_state (usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status err); Static int umass_bbb_get_max_lun (struct umass_softc *sc); /* CBI related functions */ Static int umass_cbi_adsc (struct umass_softc *sc, char *buffer, int buflen, usbd_xfer_handle xfer); Static void umass_cbi_reset (struct umass_softc *sc, int status); Static void umass_cbi_transfer (struct umass_softc *sc, int lun, void *cmd, int cmdlen, void *data, int datalen, int dir, transfer_cb_f cb, void *priv); Static void umass_cbi_state (usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status err); /* CAM related functions */ Static void umass_cam_action (struct cam_sim *sim, union ccb *ccb); Static void umass_cam_poll (struct cam_sim *sim); Static void umass_cam_cb (struct umass_softc *sc, void *priv, int residue, int status); Static void umass_cam_sense_cb (struct umass_softc *sc, void *priv, int residue, int status); Static void umass_cam_rescan_callback (struct cam_periph *periph,union ccb *ccb); Static void umass_cam_rescan (struct umass_softc *sc); Static int umass_cam_attach_sim (void); Static int umass_cam_attach (struct umass_softc *sc); Static int umass_cam_detach_sim (void); Static int umass_cam_detach (struct umass_softc *sc); /* SCSI specific functions */ Static int umass_scsi_transform (struct umass_softc *sc, unsigned char *cmd, int cmdlen, unsigned char **rcmd, int *rcmdlen); /* UFI specific functions */ #define UFI_COMMAND_LENGTH 12 /* UFI commands are always 12b */ Static int umass_ufi_transform (struct umass_softc *sc, unsigned char *cmd, int cmdlen, unsigned char **rcmd, int *rcmdlen); /* ATAPI (8070i) specific functions */ #define ATAPI_COMMAND_LENGTH 12 /* ATAPI commands are always 12b */ Static int umass_atapi_transform (struct umass_softc *sc, unsigned char *cmd, int cmdlen, unsigned char **rcmd, int *rcmdlen); #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 */ /* * Match the device we are seeing with the devices supported. Fill in the * proto and drive fields in the softc accordingly. * This function is called from both probe and attach. */ Static int umass_match_proto(struct umass_softc *sc, usbd_interface_handle iface, usbd_device_handle udev) { usb_device_descriptor_t *dd; usb_interface_descriptor_t *id; sc->sc_udev = udev; /* * Fill in sc->drive and sc->proto and return a match * value if both are determined and 0 otherwise. */ sc->drive = DRIVE_GENERIC; sc->proto = PROTO_UNKNOWN; sc->transfer_speed = UMASS_DEFAULT_TRANSFER_SPEED; dd = usbd_get_device_descriptor(udev); #if 0 /* XXX ATAPI support is untested. Don't use it for the moment */ if (UGETW(dd->idVendor) == USB_VENDOR_SHUTTLE && UGETW(dd->idProduct) == USB_PRODUCT_SHUTTLE_EUSB) { sc->drive = SHUTTLE_EUSB; #if CBI_I sc->proto = PROTO_ATAPI | PROTO_CBI_I; #else sc->proto = PROTO_ATAPI | PROTO_CBI; #endif sc->quirks |= NO_TEST_UNIT_READY | NO_START_STOP; return(UMATCH_VENDOR_PRODUCT); } if (UGETW(dd->idVendor) == USB_VENDOR_INSYSTEM && UGETW(dd->idProduct) == USB_PRODUCT_INSYSTEM_USBCABLE) { sc->drive = INSYSTEM_USBCABLE; sc->proto = PROTO_ATAPI | PROTO_CBI; sc->quirks |= NO_TEST_UNIT_READY | NO_START_STOP; return(UMATCH_VENDOR_PRODUCT); } #endif if (UGETW(dd->idVendor) == USB_VENDOR_YEDATA && UGETW(dd->idProduct) == USB_PRODUCT_YEDATA_FLASHBUSTERU) { /* Revisions < 1.28 do not handle the inerrupt endpoint * very well. */ if (UGETW(dd->bcdDevice) < 0x128) { sc->proto = PROTO_UFI | PROTO_CBI; } else { #if CBI_I sc->proto = PROTO_UFI | PROTO_CBI_I; #else sc->proto = PROTO_UFI | PROTO_CBI; #endif } /* * Revisions < 1.28 do not have the TEST UNIT READY command * Revisions == 1.28 have a broken TEST UNIT READY */ if (UGETW(dd->bcdDevice) <= 0x128) sc->quirks |= NO_TEST_UNIT_READY; sc->quirks |= RS_NO_CLEAR_UA; sc->transfer_speed = UMASS_FLOPPY_TRANSFER_SPEED; return(UMATCH_VENDOR_PRODUCT); } id = usbd_get_interface_descriptor(iface); if (id == NULL || id->bInterfaceClass != UCLASS_MASS) return(UMATCH_NONE); switch (id->bInterfaceSubClass) { case USUBCLASS_SCSI: sc->proto |= PROTO_SCSI; break; case USUBCLASS_UFI: sc->transfer_speed = UMASS_FLOPPY_TRANSFER_SPEED; sc->proto |= PROTO_UFI; break; case USUBCLASS_SFF8020I: case USUBCLASS_SFF8070I: #if 0 /* XXX ATAPI support is untested. Don't use it for the moment */ sc->proto |= PROTO_ATAPI; break; #endif default: DPRINTF(UDMASS_GEN, ("%s: Unsupported command protocol %d\n", USBDEVNAME(sc->sc_dev), id->bInterfaceSubClass)); return(UMATCH_NONE); } switch (id->bInterfaceProtocol) { case UPROTO_MASS_CBI: sc->proto |= PROTO_CBI; break; case UPROTO_MASS_CBI_I: #if CBI_I sc->proto |= PROTO_CBI_I; #else sc->proto |= PROTO_CBI; #endif break; case UPROTO_MASS_BBB: sc->proto |= PROTO_BBB; break; case UPROTO_MASS_BBB_P: sc->drive = ZIP_100; sc->proto |= PROTO_BBB; sc->transfer_speed = UMASS_ZIP100_TRANSFER_SPEED; sc->quirks |= NO_TEST_UNIT_READY; break; default: DPRINTF(UDMASS_GEN, ("%s: Unsupported wire protocol %d\n", USBDEVNAME(sc->sc_dev), id->bInterfaceProtocol)); return(UMATCH_NONE); } return(UMATCH_DEVCLASS_DEVSUBCLASS_DEVPROTO); } USB_MATCH(umass) { USB_MATCH_START(umass, uaa); struct umass_softc *sc = device_get_softc(self); if (uaa->iface == NULL) return(UMATCH_NONE); return(umass_match_proto(sc, uaa->iface, uaa->device)); } USB_ATTACH(umass) { USB_ATTACH_START(umass, sc, uaa); usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; char devinfo[1024]; int i; int err; /* * the softc struct is bzero-ed in device_set_driver. We can safely * call umass_detach without specifically initialising the struct. */ usbd_devinfo(uaa->device, 0, devinfo); USB_ATTACH_SETUP; sc->iface = uaa->iface; sc->ifaceno = uaa->ifaceno; /* initialise the proto and drive values in the umass_softc (again) */ (void) umass_match_proto(sc, sc->iface, uaa->device); id = usbd_get_interface_descriptor(sc->iface); printf("%s: %s", USBDEVNAME(sc->sc_dev), devinfo); #ifdef UMASS_DEBUG printf(", "); switch (sc->proto&PROTO_COMMAND) { case PROTO_SCSI: printf("SCSI"); break; case PROTO_ATAPI: printf("8070i (ATAPI)"); break; case PROTO_UFI: printf("UFI"); break; default: printf("(unknown 0x%02x)", sc->proto&PROTO_COMMAND); break; } printf(" over "); switch (sc->proto&PROTO_WIRE) { case PROTO_BBB: printf("Bulk-Only"); break; case PROTO_CBI: /* uses Comand/Bulk pipes */ printf("CBI"); break; case PROTO_CBI_I: /* uses Comand/Bulk/Interrupt pipes */ printf("CBI with CCI"); break; default: printf("(unknown 0x%02x)", sc->proto&PROTO_WIRE); } #endif printf("\n"); if (sc->drive == INSYSTEM_USBCABLE) { err = usbd_set_interface(0, 1); if (err) { DPRINTF(UDMASS_USB, ("%s: could not switch to " "Alt Interface %d\n", USBDEVNAME(sc->sc_dev), 1)); umass_detach(self); USB_ATTACH_ERROR_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->iface, i); if (!ed) { printf("%s: could not read endpoint descriptor\n", USBDEVNAME(sc->sc_dev)); USB_ATTACH_ERROR_RETURN; } if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { sc->bulkin = ed->bEndpointAddress; } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) { sc->bulkout = ed->bEndpointAddress; } else if (sc->proto & PROTO_CBI_I && UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && (ed->bmAttributes & UE_XFERTYPE) == UE_INTERRUPT) { sc->intrin = ed->bEndpointAddress; #ifdef UMASS_DEBUG if (UGETW(ed->wMaxPacketSize) > 2) { DPRINTF(UDMASS_CBI, ("%s: intr size is %d\n", USBDEVNAME(sc->sc_dev), UGETW(ed->wMaxPacketSize))); } #endif } } /* check whether we found all the endpoints we need */ if (!sc->bulkin || !sc->bulkout || (sc->proto & PROTO_CBI_I && !sc->intrin) ) { DPRINTF(UDMASS_USB, ("%s: endpoint not found %d/%d/%d\n", USBDEVNAME(sc->sc_dev), sc->bulkin, sc->bulkout, sc->intrin)); umass_detach(self); USB_ATTACH_ERROR_RETURN; } /* Open the bulk-in and -out pipe */ err = usbd_open_pipe(sc->iface, sc->bulkout, USBD_EXCLUSIVE_USE, &sc->bulkout_pipe); if (err) { DPRINTF(UDMASS_USB, ("%s: cannot open %d-out pipe (bulk)\n", USBDEVNAME(sc->sc_dev), sc->bulkout)); umass_detach(self); USB_ATTACH_ERROR_RETURN; } err = usbd_open_pipe(sc->iface, sc->bulkin, USBD_EXCLUSIVE_USE, &sc->bulkin_pipe); if (err) { DPRINTF(UDMASS_USB, ("%s: could not open %d-in pipe (bulk)\n", USBDEVNAME(sc->sc_dev), sc->bulkin)); umass_detach(self); 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 concurently. */ if (sc->proto & PROTO_CBI_I) { err = usbd_open_pipe(sc->iface, sc->intrin, USBD_EXCLUSIVE_USE, &sc->intrin_pipe); if (err) { DPRINTF(UDMASS_USB, ("%s: couldn't open %d-in (intr)\n", USBDEVNAME(sc->sc_dev), sc->intrin)); umass_detach(self); 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]) { DPRINTF(UDMASS_USB, ("%s: Out of memory\n", USBDEVNAME(sc->sc_dev))); umass_detach(self); USB_ATTACH_ERROR_RETURN; } } /* Initialise the wire protocol specific methods */ if (sc->proto & PROTO_BBB) { sc->reset = umass_bbb_reset; sc->transfer = umass_bbb_transfer; sc->state = umass_bbb_state; } else if ((sc->proto & PROTO_CBI) || (sc->proto & PROTO_CBI_I)) { sc->reset = umass_cbi_reset; sc->transfer = umass_cbi_transfer; sc->state = umass_cbi_state; #ifdef UMASS_DEBUG } else { panic("%s:%d: Unknown proto 0x%02x\n", __FILE__, __LINE__, sc->proto); #endif } if (sc->proto & PROTO_SCSI) sc->transform = umass_scsi_transform; else if (sc->proto & PROTO_UFI) sc->transform = umass_ufi_transform; else if (sc->proto & PROTO_ATAPI) sc->transform = umass_atapi_transform; #ifdef UMASS_DEBUG else panic("No transformation defined for command proto 0x%02x\n", sc->proto & PROTO_COMMAND); #endif /* From here onwards the device can be used. */ if (sc->drive == SHUTTLE_EUSB) umass_init_shuttle(sc); /* Get the maximum LUN supported by the device. */ if ((sc->proto & PROTO_WIRE) == PROTO_BBB) sc->maxlun = umass_bbb_get_max_lun(sc); else sc->maxlun = 0; if ((sc->proto & PROTO_SCSI) || (sc->proto & PROTO_ATAPI) || (sc->proto & PROTO_UFI)) { /* Prepare the SCSI command block */ sc->cam_scsi_sense.opcode = REQUEST_SENSE; /* If this is the first device register the SIM */ if (umass_sim == NULL) { err = umass_cam_attach_sim(); if (err) { umass_detach(self); USB_ATTACH_ERROR_RETURN; } } /* Attach the new device to our SCSI host controller (SIM) */ err = umass_cam_attach(sc); if (err) { umass_detach(self); USB_ATTACH_ERROR_RETURN; } } else { panic("%s:%d: Unknown proto 0x%02x\n", __FILE__, __LINE__, sc->proto); } DPRINTF(UDMASS_GEN, ("%s: Attach finished\n", USBDEVNAME(sc->sc_dev))); USB_ATTACH_SUCCESS_RETURN; } USB_DETACH(umass) { USB_DETACH_START(umass, sc); int err = 0; int i; DPRINTF(UDMASS_USB, ("%s: detached\n", USBDEVNAME(sc->sc_dev))); sc->flags |= UMASS_FLAGS_GONE; if ((sc->proto & PROTO_SCSI) || (sc->proto & PROTO_ATAPI) || (sc->proto & PROTO_UFI)) /* detach the device from the SCSI host controller (SIM) */ err = umass_cam_detach(sc); for (i = 0; i < XFER_NR; i++) if (sc->transfer_xfer[i]) usbd_free_xfer(sc->transfer_xfer[i]); /* remove all the pipes */ if (sc->bulkout_pipe) usbd_close_pipe(sc->bulkout_pipe); if (sc->bulkin_pipe) usbd_close_pipe(sc->bulkin_pipe); if (sc->intrin_pipe) usbd_close_pipe(sc->intrin_pipe); return(err); } Static void umass_init_shuttle(struct umass_softc *sc) { usb_device_request_t req; u_char status[2]; /* The Linux driver does this, but no one can tell us what the * command does. */ req.bmRequestType = UT_READ_VENDOR_DEVICE; req.bRequest = 1; USETW(req.wValue, 0); USETW(req.wIndex, sc->ifaceno); USETW(req.wLength, sizeof status); (void) usbd_do_request(sc->sc_udev, &req, &status); } /* * Generic functions to handle transfers */ Static usbd_status umass_setup_transfer(struct umass_softc *sc, usbd_pipe_handle pipe, void *buffer, int buflen, int flags, usbd_xfer_handle xfer) { usbd_status err; /* Initialiase a USB transfer and then schedule it */ (void) usbd_setup_xfer(xfer, pipe, (void *) sc, buffer, buflen, flags, UMASS_TIMEOUT, sc->state); err = usbd_transfer(xfer); if (err && err != USBD_IN_PROGRESS) { DPRINTF(UDMASS_BBB, ("%s: failed to setup transfer, %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err))); return(err); } return (USBD_NORMAL_COMPLETION); } Static usbd_status umass_setup_ctrl_transfer(struct umass_softc *sc, usbd_device_handle udev, usb_device_request_t *req, void *buffer, int buflen, int flags, usbd_xfer_handle xfer) { usbd_status err; /* Initialiase a USB control transfer and then schedule it */ (void) usbd_setup_default_xfer(xfer, udev, (void *) sc, UMASS_TIMEOUT, req, buffer, buflen, flags, sc->state); err = usbd_transfer(xfer); if (err && err != USBD_IN_PROGRESS) { DPRINTF(UDMASS_BBB, ("%s: failed to setup ctrl transfer, %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err))); /* do not reset, as this would make us loop */ return(err); } return (USBD_NORMAL_COMPLETION); } Static void umass_clear_endpoint_stall(struct umass_softc *sc, u_int8_t endpt, usbd_pipe_handle pipe, int state, usbd_xfer_handle xfer) { usbd_device_handle udev; DPRINTF(UDMASS_BBB, ("%s: Clear endpoint 0x%02x stall\n", USBDEVNAME(sc->sc_dev), endpt)); usbd_interface2device_handle(sc->iface, &udev); sc->transfer_state = state; usbd_clear_endpoint_toggle(pipe); sc->request.bmRequestType = UT_WRITE_ENDPOINT; sc->request.bRequest = UR_CLEAR_FEATURE; USETW(sc->request.wValue, UF_ENDPOINT_HALT); USETW(sc->request.wIndex, endpt); USETW(sc->request.wLength, 0); umass_setup_ctrl_transfer(sc, udev, &sc->request, NULL, 0, 0, xfer); } 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); } /* * Bulk protocol specific functions */ Static void umass_bbb_reset(struct umass_softc *sc, int status) { usbd_device_handle udev; KASSERT(sc->proto & PROTO_BBB, ("sc->proto == 0x%02x wrong for umass_bbb_reset\n", sc->proto)); /* * Reset recovery (5.3.4 in Universal Serial Bus Mass Storage Class) * * For Reset Recovery the host shall issue in the following order: * a) a Bulk-Only Mass Storage Reset * b) a Clear Feature HALT to the Bulk-In endpoint * c) a Clear Feature HALT to the Bulk-Out endpoint * * This is done in 3 steps, states: * TSTATE_BBB_RESET1 * TSTATE_BBB_RESET2 * TSTATE_BBB_RESET3 * * If the reset doesn't succeed, the device should be port reset. */ DPRINTF(UDMASS_BBB, ("%s: Bulk Reset\n", USBDEVNAME(sc->sc_dev))); sc->transfer_state = TSTATE_BBB_RESET1; sc->transfer_status = status; usbd_interface2device_handle(sc->iface, &udev); /* reset is a class specific interface write */ sc->request.bmRequestType = UT_WRITE_CLASS_INTERFACE; sc->request.bRequest = UR_BBB_RESET; USETW(sc->request.wValue, 0); USETW(sc->request.wIndex, sc->ifaceno); USETW(sc->request.wLength, 0); umass_setup_ctrl_transfer(sc, udev, &sc->request, NULL, 0, 0, sc->transfer_xfer[XFER_BBB_RESET1]); } Static void umass_bbb_transfer(struct umass_softc *sc, int lun, void *cmd, int cmdlen, void *data, int datalen, int dir, transfer_cb_f cb, void *priv) { KASSERT(sc->proto & PROTO_BBB, ("sc->proto == 0x%02x wrong for umass_bbb_transfer\n", sc->proto)); /* * Do a Bulk-Only transfer with cmdlen bytes from cmd, possibly * a data phase of datalen bytes from/to the device and finally a * csw read phase. * If the data direction was inbound a maximum of datalen bytes * is stored in the buffer pointed to by data. * * umass_bbb_transfer initialises the transfer and lets the state * machine in umass_bbb_state handle the completion. It uses the * following states: * TSTATE_BBB_COMMAND * -> TSTATE_BBB_DATA * -> TSTATE_BBB_STATUS * -> TSTATE_BBB_STATUS2 * -> TSTATE_BBB_IDLE * * An error in any of those states will invoke * umass_bbb_reset. */ /* check the given arguments */ KASSERT(datalen == 0 || data != NULL, ("%s: datalen > 0, but no buffer",USBDEVNAME(sc->sc_dev))); KASSERT(cmdlen <= CBWCDBLENGTH, ("%s: cmdlen exceeds CDB length in CBW (%d > %d)", USBDEVNAME(sc->sc_dev), cmdlen, CBWCDBLENGTH)); KASSERT(dir == DIR_NONE || datalen > 0, ("%s: datalen == 0 while direction is not NONE\n", USBDEVNAME(sc->sc_dev))); KASSERT(datalen == 0 || dir != DIR_NONE, ("%s: direction is NONE while datalen is not zero\n", USBDEVNAME(sc->sc_dev))); KASSERT(sizeof(umass_bbb_cbw_t) == UMASS_BBB_CBW_SIZE, ("%s: CBW struct does not have the right size (%d vs. %d)\n", USBDEVNAME(sc->sc_dev), sizeof(umass_bbb_cbw_t), UMASS_BBB_CBW_SIZE)); KASSERT(sizeof(umass_bbb_csw_t) == UMASS_BBB_CSW_SIZE, ("%s: CSW struct does not have the right size (%d vs. %d)\n", USBDEVNAME(sc->sc_dev), sizeof(umass_bbb_csw_t), UMASS_BBB_CSW_SIZE)); /* * Determine the direction of the data transfer and the length. * * dCBWDataTransferLength (datalen) : * This field indicates the number of bytes of data that the host * intends to transfer on the IN or OUT Bulk endpoint(as indicated by * the Direction bit) during the execution of this command. If this * field is set to 0, the device will expect that no data will be * transferred IN or OUT during this command, regardless of the value * of the Direction bit defined in dCBWFlags. * * dCBWFlags (dir) : * The bits of the Flags field are defined as follows: * Bits 0-6 reserved * Bit 7 Direction - this bit shall be ignored if the * dCBWDataTransferLength field is zero. * 0 = data Out from host to device * 1 = data In from device to host */ /* Fill in the Command Block Wrapper * We fill in all the fields, so there is no need to bzero it first. */ USETDW(sc->cbw.dCBWSignature, CBWSIGNATURE); /* We don't care what the initial value was, as long as the values are unique */ USETDW(sc->cbw.dCBWTag, UGETDW(sc->cbw.dCBWTag) + 1); USETDW(sc->cbw.dCBWDataTransferLength, datalen); /* DIR_NONE is treated as DIR_OUT (0x00) */ sc->cbw.bCBWFlags = (dir == DIR_IN? CBWFLAGS_IN:CBWFLAGS_OUT); sc->cbw.bCBWLUN = lun; sc->cbw.bCDBLength = cmdlen; bcopy(cmd, sc->cbw.CBWCDB, cmdlen); DIF(UDMASS_BBB, umass_bbb_dump_cbw(sc, &sc->cbw)); /* store the details for the data transfer phase */ sc->transfer_dir = dir; sc->transfer_data = data; sc->transfer_datalen = datalen; sc->transfer_actlen = 0; sc->transfer_cb = cb; sc->transfer_priv = priv; sc->transfer_status = STATUS_CMD_OK; /* move from idle to the command state */ sc->transfer_state = TSTATE_BBB_COMMAND; /* Send the CBW from host to device via bulk-out endpoint. */ if (umass_setup_transfer(sc, sc->bulkout_pipe, &sc->cbw, UMASS_BBB_CBW_SIZE, 0, sc->transfer_xfer[XFER_BBB_CBW])) { umass_bbb_reset(sc, STATUS_WIRE_FAILED); } } Static void umass_bbb_state(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status err) { struct umass_softc *sc = (struct umass_softc *) priv; usbd_xfer_handle next_xfer; KASSERT(sc->proto & PROTO_BBB, ("sc->proto == 0x%02x wrong for umass_bbb_state\n",sc->proto)); /* * State handling for BBB transfers. * * The subroutine is rather long. It steps through the states given in * Annex A of the Bulk-Only specification. * Each state first does the error handling of the previous transfer * and then prepares the next transfer. * Each transfer is done asynchroneously so after the request/transfer * has been submitted you will find a 'return;'. */ DPRINTF(UDMASS_BBB, ("%s: Handling BBB state %d (%s), xfer=%p, %s\n", USBDEVNAME(sc->sc_dev), sc->transfer_state, states[sc->transfer_state], xfer, usbd_errstr(err))); switch (sc->transfer_state) { /***** Bulk Transfer *****/ case TSTATE_BBB_COMMAND: /* Command transport phase, error handling */ if (err) { DPRINTF(UDMASS_BBB, ("%s: failed to send CBW\n", USBDEVNAME(sc->sc_dev))); /* If the device detects that the CBW is invalid, then * the device may STALL both bulk endpoints and require * a Bulk-Reset */ umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; } /* Data transport phase, setup transfer */ sc->transfer_state = TSTATE_BBB_DATA; if (sc->transfer_dir == DIR_IN) { if (umass_setup_transfer(sc, sc->bulkin_pipe, sc->transfer_data, sc->transfer_datalen, USBD_SHORT_XFER_OK, sc->transfer_xfer[XFER_BBB_DATA])) umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; } else if (sc->transfer_dir == DIR_OUT) { if (umass_setup_transfer(sc, sc->bulkout_pipe, sc->transfer_data, sc->transfer_datalen, 0, /* fixed length transfer */ sc->transfer_xfer[XFER_BBB_DATA])) umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; } else { DPRINTF(UDMASS_BBB, ("%s: no data phase\n", USBDEVNAME(sc->sc_dev))); } /* FALLTHROUGH if no data phase, err == 0 */ case TSTATE_BBB_DATA: /* Command transport phase, error handling (ignored if no data * phase (fallthrough from previous state)) */ if (sc->transfer_dir != DIR_NONE) { /* retrieve the length of the transfer that was done */ usbd_get_xfer_status(xfer, NULL, NULL, &sc->transfer_actlen, NULL); if (err) { DPRINTF(UDMASS_BBB, ("%s: Data-%s %db failed, " "%s\n", USBDEVNAME(sc->sc_dev), (sc->transfer_dir == DIR_IN?"in":"out"), sc->transfer_datalen,usbd_errstr(err))); if (err == USBD_STALLED) { umass_clear_endpoint_stall(sc, (sc->transfer_dir == DIR_IN? sc->bulkin:sc->bulkout), (sc->transfer_dir == DIR_IN? sc->bulkin_pipe:sc->bulkout_pipe), TSTATE_BBB_DCLEAR, sc->transfer_xfer[XFER_BBB_DCLEAR]); return; } else { /* Unless the error is a pipe stall the * error is fatal. */ umass_bbb_reset(sc,STATUS_WIRE_FAILED); return; } } } DIF(UDMASS_BBB, if (sc->transfer_dir == DIR_IN) umass_dump_buffer(sc, sc->transfer_data, sc->transfer_datalen, 48)); /* FALLTHROUGH, err == 0 (no data phase or successfull) */ case TSTATE_BBB_DCLEAR: /* stall clear after data phase */ case TSTATE_BBB_SCLEAR: /* stall clear after status phase */ /* Reading of CSW after bulk stall condition in data phase * (TSTATE_BBB_DATA2) or bulk-in stall condition after * reading CSW (TSTATE_BBB_SCLEAR). * In the case of no data phase or successfull data phase, * err == 0 and the following if block is passed. */ if (err) { /* should not occur */ /* try the transfer below, even if clear stall failed */ DPRINTF(UDMASS_BBB, ("%s: bulk-%s stall clear failed" ", %s\n", USBDEVNAME(sc->sc_dev), (sc->transfer_dir == DIR_IN? "in":"out"), usbd_errstr(err))); umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; } /* Status transport phase, setup transfer */ if (sc->transfer_state == TSTATE_BBB_COMMAND || sc->transfer_state == TSTATE_BBB_DATA || sc->transfer_state == TSTATE_BBB_DCLEAR) { /* After no data phase, successfull data phase and * after clearing bulk-in/-out stall condition */ sc->transfer_state = TSTATE_BBB_STATUS1; next_xfer = sc->transfer_xfer[XFER_BBB_CSW1]; } else { /* After first attempt of fetching CSW */ sc->transfer_state = TSTATE_BBB_STATUS2; next_xfer = sc->transfer_xfer[XFER_BBB_CSW2]; } /* Read the Command Status Wrapper via bulk-in endpoint. */ if (umass_setup_transfer(sc, sc->bulkin_pipe, &sc->csw, UMASS_BBB_CSW_SIZE, 0, next_xfer)) { umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; } return; case TSTATE_BBB_STATUS1: /* first attempt */ case TSTATE_BBB_STATUS2: /* second attempt */ /* Status transfer, error handling */ if (err) { DPRINTF(UDMASS_BBB, ("%s: Failed to read CSW, %s%s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err), (sc->transfer_state == TSTATE_BBB_STATUS1? ", retrying":""))); /* If this was the first attempt at fetching the CSW * retry it, otherwise fail. */ if (sc->transfer_state == TSTATE_BBB_STATUS1) { umass_clear_endpoint_stall(sc, sc->bulkin, sc->bulkin_pipe, TSTATE_BBB_SCLEAR, sc->transfer_xfer[XFER_BBB_SCLEAR]); return; } else { umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; } } DIF(UDMASS_BBB, umass_bbb_dump_csw(sc, &sc->csw)); /* Check CSW and handle any error */ if (UGETDW(sc->csw.dCSWSignature) != CSWSIGNATURE) { /* Invalid CSW: Wrong signature or wrong tag might * indicate that the device is confused -> reset it. */ printf("%s: Invalid CSW: sig 0x%08x should be 0x%08x\n", USBDEVNAME(sc->sc_dev), UGETDW(sc->csw.dCSWSignature), CSWSIGNATURE); umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; } else if (UGETDW(sc->csw.dCSWTag) != UGETDW(sc->cbw.dCBWTag)) { printf("%s: Invalid CSW: tag %d should be %d\n", USBDEVNAME(sc->sc_dev), UGETDW(sc->csw.dCSWTag), UGETDW(sc->cbw.dCBWTag)); umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; /* CSW is valid here */ } else if (sc->csw.bCSWStatus > CSWSTATUS_PHASE) { printf("%s: Invalid CSW: status %d > %d\n", USBDEVNAME(sc->sc_dev), sc->csw.bCSWStatus, CSWSTATUS_PHASE); umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; } else if (sc->csw.bCSWStatus == CSWSTATUS_PHASE) { printf("%s: Phase Error, residue = %d\n", USBDEVNAME(sc->sc_dev), UGETDW(sc->csw.dCSWDataResidue)); umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; } else if (sc->transfer_actlen > sc->transfer_datalen) { /* Buffer overrun! Don't let this go by unnoticed */ panic("%s: transferred %d bytes instead of %d bytes\n", USBDEVNAME(sc->sc_dev), sc->transfer_actlen, sc->transfer_datalen); } else if (sc->transfer_datalen - sc->transfer_actlen != UGETDW(sc->csw.dCSWDataResidue)) { DPRINTF(UDMASS_BBB, ("%s: actlen=%d != residue=%d\n", USBDEVNAME(sc->sc_dev), sc->transfer_datalen - sc->transfer_actlen, UGETDW(sc->csw.dCSWDataResidue))); umass_bbb_reset(sc, STATUS_WIRE_FAILED); return; } else if (sc->csw.bCSWStatus == CSWSTATUS_FAILED) { DPRINTF(UDMASS_BBB, ("%s: Command Failed, res = %d\n", USBDEVNAME(sc->sc_dev), UGETDW(sc->csw.dCSWDataResidue))); /* SCSI command failed but transfer was succesful */ sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, UGETDW(sc->csw.dCSWDataResidue), STATUS_CMD_FAILED); return; } else { /* success */ sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, UGETDW(sc->csw.dCSWDataResidue), STATUS_CMD_OK); return; } /***** Bulk Reset *****/ case TSTATE_BBB_RESET1: if (err) printf("%s: BBB reset failed, %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err)); umass_clear_endpoint_stall(sc, sc->bulkin, sc->bulkin_pipe, TSTATE_BBB_RESET2, sc->transfer_xfer[XFER_BBB_RESET2]); return; case TSTATE_BBB_RESET2: if (err) /* should not occur */ printf("%s: BBB bulk-in clear stall failed, %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err)); /* no error recovery, otherwise we end up in a loop */ umass_clear_endpoint_stall(sc, sc->bulkout, sc->bulkout_pipe, TSTATE_BBB_RESET3, sc->transfer_xfer[XFER_BBB_RESET3]); return; case TSTATE_BBB_RESET3: if (err) /* should not occur */ printf("%s: BBB bulk-out clear stall failed, %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err)); /* no error recovery, otherwise we end up in a loop */ sc->transfer_state = TSTATE_IDLE; if (sc->transfer_priv) { sc->transfer_cb(sc, sc->transfer_priv, sc->transfer_datalen, sc->transfer_status); } return; /***** Default *****/ default: panic("%s: Unknown state %d\n", USBDEVNAME(sc->sc_dev), sc->transfer_state); } } Static int umass_bbb_get_max_lun(struct umass_softc *sc) { usbd_device_handle udev; usb_device_request_t req; usbd_status err; usb_interface_descriptor_t *id; int maxlun = 0; u_int8_t buf = 0; usbd_interface2device_handle(sc->iface, &udev); id = usbd_get_interface_descriptor(sc->iface); /* The Get Max Lun command is a class-specific request. */ req.bmRequestType = UT_READ_CLASS_INTERFACE; req.bRequest = UR_BBB_GET_MAX_LUN; USETW(req.wValue, 0); USETW(req.wIndex, id->bInterfaceNumber); USETW(req.wLength, 1); err = usbd_do_request(udev, &req, &buf); switch (err) { case USBD_NORMAL_COMPLETION: DPRINTF(UDMASS_BBB, ("%s: Max Lun is %d\n", USBDEVNAME(sc->sc_dev), maxlun)); maxlun = buf; break; case USBD_STALLED: case USBD_SHORT_XFER: default: /* Device doesn't support Get Max Lun request. */ printf("%s: Get Max Lun not supported (%s)\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err)); /* XXX Should we port_reset the device? */ break; } return(maxlun); } /* * Command/Bulk/Interrupt (CBI) specific functions */ Static int umass_cbi_adsc(struct umass_softc *sc, char *buffer, int buflen, usbd_xfer_handle xfer) { usbd_device_handle udev; KASSERT(sc->proto & (PROTO_CBI|PROTO_CBI_I), ("sc->proto == 0x%02x wrong for umass_cbi_adsc\n",sc->proto)); usbd_interface2device_handle(sc->iface, &udev); sc->request.bmRequestType = UT_WRITE_CLASS_INTERFACE; sc->request.bRequest = UR_CBI_ADSC; USETW(sc->request.wValue, 0); USETW(sc->request.wIndex, sc->ifaceno); USETW(sc->request.wLength, buflen); return umass_setup_ctrl_transfer(sc, udev, &sc->request, buffer, buflen, 0, xfer); } Static void umass_cbi_reset(struct umass_softc *sc, int status) { int i; # define SEND_DIAGNOSTIC_CMDLEN 12 KASSERT(sc->proto & (PROTO_CBI|PROTO_CBI_I), ("sc->proto == 0x%02x wrong for umass_cbi_reset\n",sc->proto)); /* * Command Block Reset Protocol * * First send a reset request to the device. Then clear * any possibly stalled bulk endpoints. * This is done in 3 steps, states: * TSTATE_CBI_RESET1 * TSTATE_CBI_RESET2 * TSTATE_CBI_RESET3 * * If the reset doesn't succeed, the device should be port reset. */ DPRINTF(UDMASS_CBI, ("%s: CBI Reset\n", USBDEVNAME(sc->sc_dev))); KASSERT(sizeof(sc->cbl) >= SEND_DIAGNOSTIC_CMDLEN, ("%s: CBL struct is too small (%d < %d)\n", USBDEVNAME(sc->sc_dev), sizeof(sc->cbl), SEND_DIAGNOSTIC_CMDLEN)); sc->transfer_state = TSTATE_CBI_RESET1; sc->transfer_status = status; /* The 0x1d code is the SEND DIAGNOSTIC command. To distingiush between * the two the last 10 bytes of the cbl is filled with 0xff (section * 2.2 of the CBI spec). */ sc->cbl[0] = 0x1d; /* Command Block Reset */ sc->cbl[1] = 0x04; for (i = 2; i < SEND_DIAGNOSTIC_CMDLEN; i++) sc->cbl[i] = 0xff; umass_cbi_adsc(sc, sc->cbl, SEND_DIAGNOSTIC_CMDLEN, sc->transfer_xfer[XFER_CBI_RESET1]); /* XXX if the command fails we should reset the port on the bub */ } Static void umass_cbi_transfer(struct umass_softc *sc, int lun, void *cmd, int cmdlen, void *data, int datalen, int dir, transfer_cb_f cb, void *priv) { KASSERT(sc->proto & (PROTO_CBI|PROTO_CBI_I), ("sc->proto == 0x%02x wrong for umass_cbi_transfer\n", sc->proto)); /* * Do a CBI transfer with cmdlen bytes from cmd, possibly * a data phase of datalen bytes from/to the device and finally a * csw read phase. * If the data direction was inbound a maximum of datalen bytes * is stored in the buffer pointed to by data. * * umass_cbi_transfer initialises the transfer and lets the state * machine in umass_cbi_state handle the completion. It uses the * following states: * TSTATE_CBI_COMMAND * -> XXX fill in * * An error in any of those states will invoke * umass_cbi_reset. */ /* check the given arguments */ KASSERT(datalen == 0 || data != NULL, ("%s: datalen > 0, but no buffer",USBDEVNAME(sc->sc_dev))); KASSERT(datalen == 0 || dir != DIR_NONE, ("%s: direction is NONE while datalen is not zero\n", USBDEVNAME(sc->sc_dev))); /* store the details for the data transfer phase */ sc->transfer_dir = dir; sc->transfer_data = data; sc->transfer_datalen = datalen; sc->transfer_actlen = 0; sc->transfer_cb = cb; sc->transfer_priv = priv; sc->transfer_status = STATUS_CMD_OK; /* move from idle to the command state */ sc->transfer_state = TSTATE_CBI_COMMAND; /* Send the Command Block from host to device via control endpoint. */ if (umass_cbi_adsc(sc, cmd, cmdlen, sc->transfer_xfer[XFER_CBI_CB])) umass_cbi_reset(sc, STATUS_WIRE_FAILED); } Static void umass_cbi_state(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status err) { struct umass_softc *sc = (struct umass_softc *) priv; KASSERT(sc->proto & (PROTO_CBI|PROTO_CBI_I), ("sc->proto == 0x%02x wrong for umass_cbi_state\n", sc->proto)); /* * State handling for CBI transfers. */ DPRINTF(UDMASS_CBI, ("%s: Handling CBI state %d (%s), xfer=%p, %s\n", USBDEVNAME(sc->sc_dev), sc->transfer_state, states[sc->transfer_state], xfer, usbd_errstr(err))); switch (sc->transfer_state) { /***** CBI Transfer *****/ case TSTATE_CBI_COMMAND: if (err == USBD_STALLED) { DPRINTF(UDMASS_CBI, ("%s: Command Transport failed\n", USBDEVNAME(sc->sc_dev))); /* Status transport by control pipe (section 2.3.2.1). * The command contained in the command block failed. * * The control pipe has already been unstalled by the * USB stack. * Section 2.4.3.1.1 states that the bulk in endpoints * should not stalled at this point. */ sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, sc->transfer_datalen, STATUS_CMD_FAILED); return; } else if (err) { DPRINTF(UDMASS_CBI, ("%s: failed to send ADSC\n", USBDEVNAME(sc->sc_dev))); umass_cbi_reset(sc, STATUS_WIRE_FAILED); return; } sc->transfer_state = TSTATE_CBI_DATA; if (sc->transfer_dir == DIR_IN) { if (umass_setup_transfer(sc, sc->bulkin_pipe, sc->transfer_data, sc->transfer_datalen, USBD_SHORT_XFER_OK, sc->transfer_xfer[XFER_CBI_DATA])) umass_cbi_reset(sc, STATUS_WIRE_FAILED); } else if (sc->transfer_dir == DIR_OUT) { if (umass_setup_transfer(sc, sc->bulkout_pipe, sc->transfer_data, sc->transfer_datalen, 0, /* fixed length transfer */ sc->transfer_xfer[XFER_CBI_DATA])) umass_cbi_reset(sc, STATUS_WIRE_FAILED); } else if (sc->proto & PROTO_CBI_I) { DPRINTF(UDMASS_CBI, ("%s: no data phase\n", USBDEVNAME(sc->sc_dev))); sc->transfer_state = TSTATE_CBI_STATUS; if (umass_setup_transfer(sc, sc->intrin_pipe, &sc->sbl, sizeof(sc->sbl), 0, /* fixed length transfer */ sc->transfer_xfer[XFER_CBI_STATUS])){ umass_cbi_reset(sc, STATUS_WIRE_FAILED); } } else { DPRINTF(UDMASS_CBI, ("%s: no data phase\n", USBDEVNAME(sc->sc_dev))); /* No command completion interrupt. Request * sense data. */ sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, 0, STATUS_CMD_UNKNOWN); } return; case TSTATE_CBI_DATA: /* retrieve the length of the transfer that was done */ usbd_get_xfer_status(xfer,NULL,NULL,&sc->transfer_actlen,NULL); if (err) { DPRINTF(UDMASS_CBI, ("%s: Data-%s %db failed, " "%s\n", USBDEVNAME(sc->sc_dev), (sc->transfer_dir == DIR_IN?"in":"out"), sc->transfer_datalen,usbd_errstr(err))); if (err == USBD_STALLED) { umass_clear_endpoint_stall(sc, sc->bulkin, sc->bulkin_pipe, TSTATE_CBI_DCLEAR, sc->transfer_xfer[XFER_CBI_DCLEAR]); } else { umass_cbi_reset(sc, STATUS_WIRE_FAILED); } return; } DIF(UDMASS_CBI, if (sc->transfer_dir == DIR_IN) umass_dump_buffer(sc, sc->transfer_data, sc->transfer_actlen, 48)); if (sc->proto & PROTO_CBI_I) { sc->transfer_state = TSTATE_CBI_STATUS; memset(&sc->sbl, 0, sizeof(sc->sbl)); if (umass_setup_transfer(sc, sc->intrin_pipe, &sc->sbl, sizeof(sc->sbl), 0, /* fixed length transfer */ sc->transfer_xfer[XFER_CBI_STATUS])){ umass_cbi_reset(sc, STATUS_WIRE_FAILED); } } else { /* No command completion interrupt. Request * sense to get status of command. */ sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, sc->transfer_datalen - sc->transfer_actlen, STATUS_CMD_UNKNOWN); } return; case TSTATE_CBI_STATUS: if (err) { DPRINTF(UDMASS_CBI, ("%s: Status Transport failed\n", USBDEVNAME(sc->sc_dev))); /* Status transport by interrupt pipe (section 2.3.2.2). */ if (err == USBD_STALLED) { umass_clear_endpoint_stall(sc, sc->intrin, sc->intrin_pipe, TSTATE_CBI_SCLEAR, sc->transfer_xfer[XFER_CBI_SCLEAR]); } else { umass_cbi_reset(sc, STATUS_WIRE_FAILED); } return; } /* Dissect the information in the buffer */ if (sc->proto & PROTO_UFI) { int status; /* Section 3.4.3.1.3 specifies that the UFI command * protocol returns an ASC and ASCQ in the interrupt * data block. */ DPRINTF(UDMASS_CBI, ("%s: UFI CCI, ASC = 0x%02x, " "ASCQ = 0x%02x\n", USBDEVNAME(sc->sc_dev), sc->sbl.ufi.asc, sc->sbl.ufi.ascq)); if (sc->sbl.ufi.asc == 0 && sc->sbl.ufi.ascq == 0) status = STATUS_CMD_OK; else status = STATUS_CMD_FAILED; /* No sense, command successfull */ } else { /* Command Interrupt Data Block */ DPRINTF(UDMASS_CBI, ("%s: type=0x%02x, value=0x%02x\n", USBDEVNAME(sc->sc_dev), sc->sbl.common.type, sc->sbl.common.value)); if (sc->sbl.common.type == IDB_TYPE_CCI) { int err; if ((sc->sbl.common.value&IDB_VALUE_STATUS_MASK) == IDB_VALUE_PASS) { err = STATUS_CMD_OK; } else if ((sc->sbl.common.value & IDB_VALUE_STATUS_MASK) == IDB_VALUE_FAIL || (sc->sbl.common.value & IDB_VALUE_STATUS_MASK) == IDB_VALUE_PERSISTENT) { err = STATUS_CMD_FAILED; } else { err = STATUS_WIRE_FAILED; } sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, sc->transfer_datalen, err); } } return; case TSTATE_CBI_DCLEAR: if (err) { /* should not occur */ printf("%s: CBI bulk-in/out stall clear failed, %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err)); umass_cbi_reset(sc, STATUS_WIRE_FAILED); } sc->transfer_state = TSTATE_IDLE; sc->transfer_cb(sc, sc->transfer_priv, sc->transfer_datalen, STATUS_CMD_FAILED); return; case TSTATE_CBI_SCLEAR: if (err) /* should not occur */ printf("%s: CBI intr-in stall clear failed, %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err)); /* Something really bad is going on. Reset the device */ umass_cbi_reset(sc, STATUS_CMD_FAILED); return; /***** CBI Reset *****/ case TSTATE_CBI_RESET1: if (err) printf("%s: CBI reset failed, %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err)); umass_clear_endpoint_stall(sc, sc->bulkin, sc->bulkin_pipe, TSTATE_CBI_RESET2, sc->transfer_xfer[XFER_CBI_RESET2]); return; case TSTATE_CBI_RESET2: if (err) /* should not occur */ printf("%s: CBI bulk-in stall clear failed, %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err)); /* no error recovery, otherwise we end up in a loop */ umass_clear_endpoint_stall(sc, sc->bulkout, sc->bulkout_pipe, TSTATE_CBI_RESET3, sc->transfer_xfer[XFER_CBI_RESET3]); return; case TSTATE_CBI_RESET3: if (err) /* should not occur */ printf("%s: CBI bulk-out stall clear failed, %s\n", USBDEVNAME(sc->sc_dev), usbd_errstr(err)); /* no error recovery, otherwise we end up in a loop */ sc->transfer_state = TSTATE_IDLE; if (sc->transfer_priv) { sc->transfer_cb(sc, sc->transfer_priv, sc->transfer_datalen, sc->transfer_status); } return; /***** Default *****/ default: panic("%s: Unknown state %d\n", USBDEVNAME(sc->sc_dev), sc->transfer_state); } } /* * CAM specific functions (used by SCSI, UFI, 8070i (ATAPI)) */ Static int umass_cam_attach_sim() { struct cam_devq *devq; /* Per device Queue */ /* A HBA is attached to the CAM layer. * * The CAM layer will then after a while start probing for * devices on the bus. The number of SIMs is limited to one. */ devq = cam_simq_alloc(1 /*maximum openings*/); if (devq == NULL) return(ENOMEM); umass_sim = cam_sim_alloc(umass_cam_action, umass_cam_poll, DEVNAME_SIM, NULL /*priv*/, UMASS_SIM_UNIT /*unit number*/, 1 /*maximum device openings*/, 0 /*maximum tagged device openings*/, devq); if (umass_sim == NULL) { cam_simq_free(devq); return(ENOMEM); } if(xpt_bus_register(umass_sim, UMASS_SCSI_BUS) != CAM_SUCCESS) return(ENOMEM); return(0); } Static void umass_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) { #ifdef UMASS_DEBUG if (ccb->ccb_h.status != CAM_REQ_CMP) { DPRINTF(UDMASS_SCSI, ("scbus%d: Rescan failed, 0x%04x\n", cam_sim_path(umass_sim), ccb->ccb_h.status)); } else { DPRINTF(UDMASS_SCSI, ("scbus%d: Rescan succeeded\n", cam_sim_path(umass_sim))); } #endif xpt_free_path(ccb->ccb_h.path); free(ccb, M_USBDEV); } Static void umass_cam_rescan(struct umass_softc *sc) { struct cam_path *path; union ccb *ccb = malloc(sizeof(union ccb), M_USBDEV, M_WAITOK); memset(ccb, 0, sizeof(union ccb)); DPRINTF(UDMASS_SCSI, ("scbus%d: scanning for %s:%d:%d:%d\n", cam_sim_path(umass_sim), USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim), USBDEVUNIT(sc->sc_dev), CAM_LUN_WILDCARD)); if (xpt_create_path(&path, xpt_periph, cam_sim_path(umass_sim), CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) return; xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/); ccb->ccb_h.func_code = XPT_SCAN_BUS; ccb->ccb_h.cbfcnp = umass_cam_rescan_callback; ccb->crcn.flags = CAM_FLAG_NONE; xpt_action(ccb); /* The scan is in progress now. */ } Static int umass_cam_attach(struct umass_softc *sc) { /* SIM already attached at module load. The device is a target on the * one SIM we registered: target device_get_unit(self). */ /* The artificial limit UMASS_SCSIID_MAX is there because CAM expects * a limit to the number of targets that are present on a SIM. */ if (device_get_unit(sc->sc_dev) >= UMASS_SCSIID_MAX) { printf("scbus%d: Increase UMASS_SCSIID_MAX (currently %d) in %s" " and try again.\n", cam_sim_path(umass_sim), UMASS_SCSIID_MAX, __FILE__); return(1); } #ifndef UMASS_DEBUG if (bootverbose) #endif printf("%s:%d:%d:%d: Attached to scbus%d as device %d\n", USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim), USBDEVUNIT(sc->sc_dev), CAM_LUN_WILDCARD, cam_sim_path(umass_sim), USBDEVUNIT(sc->sc_dev)); if (!cold) { /* Notify CAM of the new device. Any failure is benign, as the * user can still do it by hand (camcontrol rescan ). * Only do this if we are not booting, because CAM does a scan * after booting has completed, when interrupts have been * enabled. */ umass_cam_rescan(sc); } return(0); /* always succesfull */ } /* umass_cam_detach * detach from the CAM layer */ Static int umass_cam_detach_sim() { if (umass_sim) return(EBUSY); /* XXX CAM can't handle disappearing SIMs yet */ if (umass_sim) { if (xpt_bus_deregister(cam_sim_path(umass_sim))) cam_sim_free(umass_sim, /*free_devq*/TRUE); else return(EBUSY); umass_sim = NULL; } return(0); } Static int umass_cam_detach(struct umass_softc *sc) { struct cam_path *path; if (umass_sim) { /* detach of sim not done until module unload */ DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d: losing CAM device entry\n", USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim), USBDEVUNIT(sc->sc_dev), CAM_LUN_WILDCARD)); if (xpt_create_path(&path, NULL, cam_sim_path(umass_sim), USBDEVUNIT(sc->sc_dev), CAM_LUN_WILDCARD) != CAM_REQ_CMP) return(ENOMEM); xpt_async(AC_LOST_DEVICE, path, NULL); xpt_free_path(path); } return(0); } /* umass_cam_action * CAM requests for action come through here */ Static void umass_cam_action(struct cam_sim *sim, union ccb *ccb) { struct umass_softc *sc = devclass_get_softc(umass_devclass, ccb->ccb_h.target_id); /* The softc is still there, but marked as going away. umass_cam_detach * has not yet notified CAM of the lost device however. */ if (sc && (sc->flags & UMASS_FLAGS_GONE)) { DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:func_code 0x%04x: " "Invalid target (gone)\n", USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun, ccb->ccb_h.func_code)); ccb->ccb_h.status = CAM_TID_INVALID; xpt_done(ccb); return; } /* Verify, depending on the operation to perform, that we either got a * valid sc, because an existing target was referenced, or otherwise * the SIM is addressed. * * This avoids bombing out at a printf and does give the CAM layer some * sensible feedback on errors. */ switch (ccb->ccb_h.func_code) { case XPT_SCSI_IO: case XPT_RESET_DEV: case XPT_GET_TRAN_SETTINGS: case XPT_SET_TRAN_SETTINGS: case XPT_CALC_GEOMETRY: /* the opcodes requiring a target. These should never occur. */ if (sc == NULL) { printf("%s:%d:%d:%d:func_code 0x%04x: " "Invalid target (target needed)\n", DEVNAME_SIM, cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun, ccb->ccb_h.func_code); ccb->ccb_h.status = CAM_TID_INVALID; xpt_done(ccb); return; } break; case XPT_PATH_INQ: case XPT_NOOP: /* The opcodes sometimes aimed at a target (sc is valid), * sometimes aimed at the SIM (sc is invalid and target is * CAM_TARGET_WILDCARD) */ if (sc == NULL && ccb->ccb_h.target_id != CAM_TARGET_WILDCARD) { DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:func_code 0x%04x: " "Invalid target (no wildcard)\n", DEVNAME_SIM, cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun, ccb->ccb_h.func_code)); ccb->ccb_h.status = CAM_TID_INVALID; xpt_done(ccb); return; } break; default: /* XXX Hm, we should check the input parameters */ } /* Perform the requested action */ switch (ccb->ccb_h.func_code) { case XPT_SCSI_IO: { struct ccb_scsiio *csio = &ccb->csio; /* deref union */ int dir; unsigned char *cmd; int cmdlen; unsigned char *rcmd; int rcmdlen; DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:XPT_SCSI_IO: " "cmd: 0x%02x, flags: 0x%02x, " "%db cmd/%db data/%db sense\n", USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun, csio->cdb_io.cdb_bytes[0], ccb->ccb_h.flags & CAM_DIR_MASK, csio->cdb_len, csio->dxfer_len, csio->sense_len)); /* clear the end of the buffer to make sure we don't send out * garbage. */ DIF(UDMASS_SCSI, if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) umass_dump_buffer(sc, csio->data_ptr, csio->dxfer_len, 48)); if (sc->transfer_state != TSTATE_IDLE) { DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:XPT_SCSI_IO: " "I/O requested while busy (state %d, %s)\n", USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun, sc->transfer_state,states[sc->transfer_state])); ccb->ccb_h.status = CAM_SCSI_BUSY; xpt_done(ccb); return; } switch(ccb->ccb_h.flags&CAM_DIR_MASK) { case CAM_DIR_IN: dir = DIR_IN; break; case CAM_DIR_OUT: dir = DIR_OUT; break; default: dir = DIR_NONE; } ccb->ccb_h.status = CAM_REQ_INPROG | CAM_SIM_QUEUED; if (csio->ccb_h.flags & CAM_CDB_POINTER) { cmd = (unsigned char *) csio->cdb_io.cdb_ptr; } else { cmd = (unsigned char *) &csio->cdb_io.cdb_bytes; } cmdlen = csio->cdb_len; rcmd = (unsigned char *) &sc->cam_scsi_command; rcmdlen = sizeof(sc->cam_scsi_command); /* sc->transform will convert the command to the command * (format) needed by the specific command set and return * the converted command in a buffer pointed to be rcmd. * We pass in a buffer, but if the command does not * have to be transformed it returns a ptr to the original * buffer (see umass_scsi_transform). */ if (sc->transform(sc, cmd, cmdlen, &rcmd, &rcmdlen)) { sc->transfer(sc, ccb->ccb_h.target_lun, rcmd, rcmdlen, csio->data_ptr, csio->dxfer_len, dir, umass_cam_cb, (void *) ccb); } else { ccb->ccb_h.status = CAM_REQ_INVALID; xpt_done(ccb); } break; } case XPT_PATH_INQ: { struct ccb_pathinq *cpi = &ccb->cpi; DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:XPT_PATH_INQ:.\n", (sc == NULL? DEVNAME_SIM:USBDEVNAME(sc->sc_dev)), cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun)); /* host specific information */ cpi->version_num = 1; cpi->hba_inquiry = 0; cpi->target_sprt = 0; cpi->hba_misc = 0; cpi->hba_eng_cnt = 0; cpi->max_target = UMASS_SCSIID_MAX; /* one target */ if (sc == NULL) cpi->max_lun = 0; else cpi->max_lun = sc->maxlun; cpi->initiator_id = UMASS_SCSIID_HOST; strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); strncpy(cpi->hba_vid, "USB SCSI", HBA_IDLEN); strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); cpi->unit_number = cam_sim_unit(sim); cpi->bus_id = UMASS_SCSI_BUS; if (sc) cpi->base_transfer_speed = sc->transfer_speed; cpi->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } case XPT_RESET_DEV: { DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:XPT_RESET_DEV:.\n", USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun)); ccb->ccb_h.status = CAM_REQ_INPROG; umass_reset(sc, umass_cam_cb, (void *) ccb); break; } case XPT_GET_TRAN_SETTINGS: { struct ccb_trans_settings *cts = &ccb->cts; DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:XPT_GET_TRAN_SETTINGS:.\n", USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun)); cts->valid = 0; cts->flags = 0; /* no disconnection, tagging */ ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } case XPT_SET_TRAN_SETTINGS: { DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:XPT_SET_TRAN_SETTINGS:.\n", USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun)); ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; xpt_done(ccb); break; } case XPT_CALC_GEOMETRY: { struct ccb_calc_geometry *ccg = &ccb->ccg; DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:XPT_CALC_GEOMETRY: " "Volume size = %d\n", USBDEVNAME(sc->sc_dev), cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun, ccg->volume_size)); /* XXX We should probably ask the drive for the details * instead of cluching them up ourselves */ if (sc->drive == ZIP_100) { ccg->heads = 64; ccg->secs_per_track = 32; ccg->cylinders = ccg->volume_size / ccg->heads / ccg->secs_per_track; ccb->ccb_h.status = CAM_REQ_CMP; break; } else if (sc->proto & PROTO_UFI) { ccg->heads = 2; if (ccg->volume_size == 2880) ccg->secs_per_track = 18; else ccg->secs_per_track = 9; ccg->cylinders = 80; break; } else { ccb->ccb_h.status = CAM_REQ_CMP_ERR; } xpt_done(ccb); break; } case XPT_NOOP: { DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:XPT_NOOP:.\n", (sc == NULL? DEVNAME_SIM:USBDEVNAME(sc->sc_dev)), cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun)); ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; } default: DPRINTF(UDMASS_SCSI, ("%s:%d:%d:%d:func_code 0x%04x: " "Not implemented\n", (sc == NULL? DEVNAME_SIM:USBDEVNAME(sc->sc_dev)), cam_sim_path(umass_sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun, ccb->ccb_h.func_code)); ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; xpt_done(ccb); break; } } /* umass_cam_poll * all requests are handled through umass_cam_action, requests * are never pending. So, nothing to do here. */ Static void umass_cam_poll(struct cam_sim *sim) { #ifdef UMASS_DEBUG struct umass_softc *sc = (struct umass_softc *) sim->softc; DPRINTF(UDMASS_SCSI, ("%s: CAM poll\n", USBDEVNAME(sc->sc_dev))); #endif /* nop */ } /* umass_cam_cb * finalise a completed CAM command */ Static void umass_cam_cb(struct umass_softc *sc, void *priv, int residue, int status) { union ccb *ccb = (union ccb *) priv; struct ccb_scsiio *csio = &ccb->csio; /* deref union */ csio->resid = residue; switch (status) { case STATUS_CMD_OK: ccb->ccb_h.status = CAM_REQ_CMP; xpt_done(ccb); break; case STATUS_CMD_UNKNOWN: case STATUS_CMD_FAILED: switch (ccb->ccb_h.func_code) { case XPT_SCSI_IO: { unsigned char *rcmd; int rcmdlen; /* fetch sense data */ DPRINTF(UDMASS_SCSI,("%s: Fetching %db sense data\n", USBDEVNAME(sc->sc_dev), sc->cam_scsi_sense.length)); /* the rest of the command was filled in at attach */ sc->cam_scsi_sense.length = csio->sense_len; rcmd = (unsigned char *) &sc->cam_scsi_command; if (sc->transform(sc, (unsigned char *) &sc->cam_scsi_sense, sizeof(sc->cam_scsi_sense), &rcmd, &rcmdlen)) { sc->transfer(sc, ccb->ccb_h.target_lun, rcmd, rcmdlen, &csio->sense_data, csio->sense_len, DIR_IN, umass_cam_sense_cb, (void *) ccb); } else { panic("transform(REQUEST_SENSE) failed\n"); } break; } case XPT_RESET_DEV: /* Reset failed */ ccb->ccb_h.status = CAM_REQ_CMP_ERR; xpt_done(ccb); break; default: panic("umass_cam_cb called for func_code %d\n", ccb->ccb_h.func_code); } break; case STATUS_WIRE_FAILED: /* the wire protocol failed and will have recovered * (hopefully). We return an error to CAM and let CAM retry * the command if necessary. */ ccb->ccb_h.status = CAM_REQ_CMP_ERR; xpt_done(ccb); break; default: panic("%s: Unknown status %d in umass_cam_cb\n", USBDEVNAME(sc->sc_dev), status); } } /* Finalise a completed autosense operation */ Static void umass_cam_sense_cb(struct umass_softc *sc, void *priv, int residue, int status) { union ccb *ccb = (union ccb *) priv; struct ccb_scsiio *csio = &ccb->csio; /* deref union */ switch (status) { case STATUS_CMD_OK: case STATUS_CMD_UNKNOWN: /* Getting sense data succeeded. The length of the sense data * is not returned in any way. The sense data itself contains * the length of the sense data that is valid. */ if (sc->quirks & RS_NO_CLEAR_UA && csio->cdb_io.cdb_bytes[0] == INQUIRY && (csio->sense_data.flags & SSD_KEY) == SSD_KEY_UNIT_ATTENTION) { /* Ignore unit attention errors in the case where * the Unit Attention state is not cleared on * REQUEST SENSE. They will appear again at the next * command. */ ccb->ccb_h.status = CAM_REQ_CMP; } else if ((csio->sense_data.flags & SSD_KEY) == SSD_KEY_NO_SENSE) { /* No problem after all (in the case of CBI without * CCI) */ ccb->ccb_h.status = CAM_REQ_CMP; } else { ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; csio->scsi_status = SCSI_STATUS_CHECK_COND; } xpt_done(ccb); break; default: DPRINTF(UDMASS_SCSI, ("%s: Autosense failed, status %d\n", USBDEVNAME(sc->sc_dev), status)); ccb->ccb_h.status = CAM_AUTOSENSE_FAIL; xpt_done(ccb); } } Static int umass_driver_load(module_t mod, int what, void *arg) { int err; switch (what) { case MOD_UNLOAD: err = umass_cam_detach_sim(); if (err) return(err); return(usbd_driver_load(mod, what, arg)); case MOD_LOAD: /* We don't attach to CAM at this point, because it will try * and malloc memory for it. This is not possible when the * boot loader loads umass as a module before the kernel * has been bootstrapped. */ default: return(usbd_driver_load(mod, what, arg)); } } /* * SCSI specific functions */ Static int umass_scsi_transform(struct umass_softc *sc, unsigned char *cmd, int cmdlen, unsigned char **rcmd, int *rcmdlen) { switch (cmd[0]) { case TEST_UNIT_READY: if (sc->quirks & NO_TEST_UNIT_READY) { KASSERT(*rcmdlen >= sizeof(struct scsi_start_stop_unit), ("rcmdlen = %d < %d, buffer too small", *rcmdlen, sizeof(struct scsi_start_stop_unit))); DPRINTF(UDMASS_SCSI, ("%s: Converted TEST_UNIT_READY " "to START_UNIT\n", USBDEVNAME(sc->sc_dev))); memset(*rcmd, 0, *rcmdlen); cmd[0] = START_STOP_UNIT; cmd[4] = SSS_START; return 1; } /* fallthrough */ default: *rcmd = cmd; /* We don't need to copy it */ *rcmdlen = cmdlen; } return 1; /* success */ } /* * UFI specific functions */ Static int umass_ufi_transform(struct umass_softc *sc, unsigned char *cmd, int cmdlen, unsigned char **rcmd, int *rcmdlen) { /* A UFI command is always 12 bytes in length */ KASSERT(*rcmdlen >= UFI_COMMAND_LENGTH, ("rcmdlen = %d < %d, buffer too small", *rcmdlen, UFI_COMMAND_LENGTH)); *rcmdlen = UFI_COMMAND_LENGTH; memset(*rcmd, 0, UFI_COMMAND_LENGTH); /* Handle any quirks */ if (cmd[0] == TEST_UNIT_READY && sc->quirks & NO_TEST_UNIT_READY) { /* Some devices do not support this command. * Start Stop Unit should give the same results */ DPRINTF(UDMASS_UFI, ("%s: Converted TEST_UNIT_READY " "to START_UNIT\n", USBDEVNAME(sc->sc_dev))); cmd[0] = START_STOP_UNIT; cmd[4] = SSS_START; return 1; } switch (cmd[0]) { /* Commands of which the format has been verified. They should work. */ case TEST_UNIT_READY: case REZERO_UNIT: case REQUEST_SENSE: case INQUIRY: case START_STOP_UNIT: case SEND_DIAGNOSTIC: case PREVENT_ALLOW: case READ_CAPACITY: case READ_10: case WRITE_10: case POSITION_TO_ELEMENT: /* SEEK_10 */ case MODE_SELECT_10: case MODE_SENSE_10: /* Copy the command into the (zeroed out) destination buffer */ memcpy(*rcmd, cmd, cmdlen); return 1; /* success */ /* Other UFI commands: FORMAT_UNIT, MODE_SELECT, READ_FORMAT_CAPACITY, * VERIFY, WRITE_AND_VERIFY. * These should be checked whether they somehow can be made to fit. */ /* These commands are known _not_ to work. They should be converted * The 6 byte commands can be switched off with a CAM quirk. See * the entry for the Y-E data drive. */ case READ_6: case WRITE_6: case MODE_SENSE_6: case MODE_SELECT_6: case READ_12: case WRITE_12: default: printf("%s: Unsupported UFI command 0x%02x", USBDEVNAME(sc->sc_dev), cmd[0]); if (cmdlen == 6) printf(", 6 byte command should have been converted"); printf("\n"); return 0; /* failure */ } } /* * 8070i (ATAPI) specific functions */ Static int umass_atapi_transform(struct umass_softc *sc, unsigned char *cmd, int cmdlen, unsigned char **rcmd, int *rcmdlen) { /* A ATAPI command is always 12 bytes in length */ KASSERT(*rcmdlen >= ATAPI_COMMAND_LENGTH, ("rcmdlen = %d < %d, buffer too small", *rcmdlen, ATAPI_COMMAND_LENGTH)); *rcmdlen = ATAPI_COMMAND_LENGTH; memset(*rcmd, 0, ATAPI_COMMAND_LENGTH); switch (cmd[0]) { /* Commands of which the format has been verified. They should work. */ case TEST_UNIT_READY: case REZERO_UNIT: case REQUEST_SENSE: case INQUIRY: case START_STOP_UNIT: case SEND_DIAGNOSTIC: case PREVENT_ALLOW: case READ_CAPACITY: case READ_10: case WRITE_10: case POSITION_TO_ELEMENT: /* SEEK_10 */ case MODE_SELECT_10: case MODE_SENSE_10: /* Copy the command into the (zeroed out) destination buffer */ memcpy(*rcmd, cmd, cmdlen); return 1; /* success */ /* These commands are known _not_ to work. They should be converted * The 6 byte commands can be switched off with a CAM quirk. See * the entry for the Y-E data drive. */ case READ_6: case WRITE_6: case MODE_SENSE_6: case MODE_SELECT_6: case READ_12: case WRITE_12: default: printf("%s: Unsupported ATAPI command 0x%02x", USBDEVNAME(sc->sc_dev), cmd[0]); if (cmdlen == 6) printf(", 6 byte command should have been converted"); printf("\n"); return 0; /* failure */ } } /* (even the comment is missing) */ DRIVER_MODULE(umass, uhub, umass_driver, umass_devclass, umass_driver_load, 0); #ifdef UMASS_DEBUG Static void umass_bbb_dump_cbw(struct umass_softc *sc, umass_bbb_cbw_t *cbw) { int clen = cbw->bCDBLength; int dlen = UGETDW(cbw->dCBWDataTransferLength); u_int8_t *c = cbw->CBWCDB; int tag = UGETDW(cbw->dCBWTag); int flags = cbw->bCBWFlags; DPRINTF(UDMASS_BBB, ("%s: CBW %d: cmd = %db " "(0x%02x%02x%02x%02x%02x%02x%s), " "data = %d bytes, dir = %s\n", USBDEVNAME(sc->sc_dev), tag, clen, c[0], c[1], c[2], c[3], c[4], c[5], (clen > 6? "...":""), dlen, (flags == CBWFLAGS_IN? "in": (flags == CBWFLAGS_OUT? "out":"")))); } 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":""))))); } 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