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usscanner.c revision 1.21.14.1
      1 /*	$NetBSD: usscanner.c,v 1.21.14.1 2007/05/22 14:57:51 itohy Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Lennart Augustsson (lennart (at) augustsson.net) and LLoyd Parkes.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * This driver is partly based on information taken from the Linux driver
     41  * by John Fremlin, Oliver Neukum, and Jeremy Hall.
     42  */
     43 /*
     44  * Protocol:
     45  * Send raw SCSI command on the bulk-out pipe.
     46  * If output command then
     47  *     send further data on the bulk-out pipe
     48  * else if input command then
     49  *     read data on the bulk-in pipe
     50  * else
     51  *     don't do anything.
     52  * Read status byte on the interrupt pipe (which doesn't seem to be
     53  * an interrupt pipe at all).  This operation sometimes times out.
     54  */
     55 
     56 #include <sys/cdefs.h>
     57 __KERNEL_RCSID(0, "$NetBSD: usscanner.c,v 1.21.14.1 2007/05/22 14:57:51 itohy Exp $");
     58 
     59 #include "scsibus.h"
     60 #include <sys/param.h>
     61 #include <sys/systm.h>
     62 #include <sys/kernel.h>
     63 #include <sys/malloc.h>
     64 #include <sys/device.h>
     65 #include <sys/conf.h>
     66 #include <sys/buf.h>
     67 
     68 #include <dev/usb/usb.h>
     69 #include <dev/usb/usbdi.h>
     70 #include <dev/usb/usbdi_util.h>
     71 
     72 #include <dev/usb/usbdevs.h>
     73 
     74 #include <sys/scsiio.h>
     75 #include <dev/scsipi/scsi_spc.h>
     76 #include <dev/scsipi/scsi_all.h>
     77 #include <dev/scsipi/scsipi_all.h>
     78 #include <dev/scsipi/scsiconf.h>
     79 #include <dev/scsipi/atapiconf.h>
     80 
     81 #ifdef USSCANNER_DEBUG
     82 #define DPRINTF(x)	if (usscannerdebug) logprintf x
     83 #define DPRINTFN(n,x)	if (usscannerdebug>(n)) logprintf x
     84 int	usscannerdebug = 0;
     85 #else
     86 #define DPRINTF(x)
     87 #define DPRINTFN(n,x)
     88 #endif
     89 
     90 
     91 #define USSCANNER_CONFIG_NO		1
     92 #define USSCANNER_IFACE_IDX		0
     93 
     94 #define USSCANNER_SCSIID_HOST	0x00
     95 #define USSCANNER_SCSIID_DEVICE	0x01
     96 
     97 #define USSCANNER_MAX_TRANSFER_SIZE	MAXPHYS
     98 
     99 #define USSCANNER_TIMEOUT 2000
    100 
    101 struct usscanner_softc {
    102  	USBBASEDEVICE		sc_dev;
    103 	usbd_device_handle	sc_udev;
    104 	usbd_interface_handle	sc_iface;
    105 
    106 	int			sc_in_addr;
    107 	usbd_pipe_handle	sc_in_pipe;
    108 
    109 	int			sc_intr_addr;
    110 	usbd_pipe_handle	sc_intr_pipe;
    111 	usbd_xfer_handle	sc_intr_xfer;
    112 	u_char			sc_status;
    113 
    114 	int			sc_out_addr;
    115 	usbd_pipe_handle	sc_out_pipe;
    116 
    117 	usbd_xfer_handle	sc_cmd_xfer;
    118 	void			*sc_cmd_buffer;
    119 	usbd_xfer_handle	sc_datain_xfer;
    120 	usbd_xfer_handle	sc_dataout_xfer;
    121 
    122 	int			sc_state;
    123 #define UAS_IDLE	0
    124 #define UAS_CMD		1
    125 #define UAS_DATA	2
    126 #define UAS_SENSECMD	3
    127 #define UAS_SENSEDATA	4
    128 #define UAS_STATUS	5
    129 
    130 	struct scsipi_xfer	*sc_xs;
    131 
    132 	device_ptr_t		sc_child;	/* child device, for detach */
    133 
    134 	struct scsipi_adapter	sc_adapter;
    135 	struct scsipi_channel	sc_channel;
    136 
    137 	int			sc_refcnt;
    138 	char			sc_dying;
    139 };
    140 
    141 
    142 Static void usscanner_cleanup(struct usscanner_softc *sc);
    143 Static void usscanner_scsipi_request(struct scsipi_channel *chan,
    144 				scsipi_adapter_req_t req, void *arg);
    145 Static void usscanner_scsipi_minphys(struct buf *bp);
    146 Static void usscanner_done(struct usscanner_softc *sc);
    147 Static void usscanner_sense(struct usscanner_softc *sc);
    148 typedef void callback(usbd_xfer_handle, usbd_private_handle, usbd_status);
    149 Static callback usscanner_intr_cb;
    150 Static callback usscanner_cmd_cb;
    151 Static callback usscanner_data_cb;
    152 Static callback usscanner_sensecmd_cb;
    153 Static callback usscanner_sensedata_cb;
    154 
    155 USB_DECLARE_DRIVER(usscanner);
    156 
    157 USB_MATCH(usscanner)
    158 {
    159 	USB_MATCH_START(usscanner, uaa);
    160 
    161 	DPRINTFN(50,("usscanner_match\n"));
    162 
    163 	if (uaa->iface != NULL)
    164 		return (UMATCH_NONE);
    165 
    166 	if (uaa->vendor == USB_VENDOR_HP &&
    167 	    uaa->product == USB_PRODUCT_HP_5300C)
    168 		return (UMATCH_VENDOR_PRODUCT);
    169 	else
    170 		return (UMATCH_NONE);
    171 }
    172 
    173 USB_ATTACH(usscanner)
    174 {
    175 	USB_ATTACH_START(usscanner, sc, uaa);
    176 	usbd_device_handle	dev = uaa->device;
    177 	usbd_interface_handle	iface;
    178 	char			*devinfop;
    179 	usbd_status		err;
    180 	usb_endpoint_descriptor_t *ed;
    181 	u_int8_t		epcount;
    182 	int			i;
    183 
    184 	DPRINTFN(10,("usscanner_attach: sc=%p\n", sc));
    185 
    186 	devinfop = usbd_devinfo_alloc(dev, 0);
    187 	USB_ATTACH_SETUP;
    188 	printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop);
    189 	usbd_devinfo_free(devinfop);
    190 
    191 	err = usbd_set_config_no(dev, USSCANNER_CONFIG_NO, 1);
    192 	if (err) {
    193 		printf("%s: setting config no failed\n",
    194 		    USBDEVNAME(sc->sc_dev));
    195 		USB_ATTACH_ERROR_RETURN;
    196 	}
    197 
    198 	err = usbd_device2interface_handle(dev, USSCANNER_IFACE_IDX, &iface);
    199 	if (err) {
    200 		printf("%s: getting interface handle failed\n",
    201 		    USBDEVNAME(sc->sc_dev));
    202 		USB_ATTACH_ERROR_RETURN;
    203 	}
    204 
    205 	sc->sc_udev = dev;
    206 	sc->sc_iface = iface;
    207 
    208 	epcount = 0;
    209 	(void)usbd_endpoint_count(iface, &epcount);
    210 
    211 	sc->sc_in_addr = -1;
    212 	sc->sc_intr_addr = -1;
    213 	sc->sc_out_addr = -1;
    214 	for (i = 0; i < epcount; i++) {
    215 		ed = usbd_interface2endpoint_descriptor(iface, i);
    216 		if (ed == NULL) {
    217 			printf("%s: couldn't get ep %d\n",
    218 			    USBDEVNAME(sc->sc_dev), i);
    219 			USB_ATTACH_ERROR_RETURN;
    220 		}
    221 		if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
    222 		    UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
    223 			sc->sc_in_addr = ed->bEndpointAddress;
    224 		} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
    225 		    UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
    226 			sc->sc_intr_addr = ed->bEndpointAddress;
    227 		} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
    228 			   UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
    229 			sc->sc_out_addr = ed->bEndpointAddress;
    230 		}
    231 	}
    232 	if (sc->sc_in_addr == -1 || sc->sc_intr_addr == -1 ||
    233 	    sc->sc_out_addr == -1) {
    234 		printf("%s: missing endpoint\n", USBDEVNAME(sc->sc_dev));
    235 		USB_ATTACH_ERROR_RETURN;
    236 	}
    237 
    238 	err = usbd_open_pipe(sc->sc_iface, sc->sc_in_addr,
    239 			     USBD_EXCLUSIVE_USE, &sc->sc_in_pipe);
    240 	if (err) {
    241 		printf("%s: open in pipe failed, err=%d\n",
    242 		       USBDEVNAME(sc->sc_dev), err);
    243 		USB_ATTACH_ERROR_RETURN;
    244 	}
    245 
    246 	/* The interrupt endpoint must be opened as a normal pipe. */
    247 	err = usbd_open_pipe(sc->sc_iface, sc->sc_intr_addr,
    248 			     USBD_EXCLUSIVE_USE, &sc->sc_intr_pipe);
    249 
    250 	if (err) {
    251 		printf("%s: open intr pipe failed, err=%d\n",
    252 		       USBDEVNAME(sc->sc_dev), err);
    253 		usscanner_cleanup(sc);
    254 		USB_ATTACH_ERROR_RETURN;
    255 	}
    256 	err = usbd_open_pipe(sc->sc_iface, sc->sc_out_addr,
    257 			     USBD_EXCLUSIVE_USE, &sc->sc_out_pipe);
    258 	if (err) {
    259 		printf("%s: open out pipe failed, err=%d\n",
    260 		       USBDEVNAME(sc->sc_dev), err);
    261 		usscanner_cleanup(sc);
    262 		USB_ATTACH_ERROR_RETURN;
    263 	}
    264 
    265 	sc->sc_cmd_xfer = usbd_alloc_xfer(uaa->device, sc->sc_out_pipe);
    266 	if (sc->sc_cmd_xfer == NULL) {
    267 		printf("%s: alloc cmd xfer failed, err=%d\n",
    268 		       USBDEVNAME(sc->sc_dev), err);
    269 		usscanner_cleanup(sc);
    270 		USB_ATTACH_ERROR_RETURN;
    271 	}
    272 
    273 	/* XXX too big */
    274 	sc->sc_cmd_buffer = usbd_alloc_buffer(sc->sc_cmd_xfer,
    275 					     USSCANNER_MAX_TRANSFER_SIZE);
    276 	if (sc->sc_cmd_buffer == NULL) {
    277 		printf("%s: alloc cmd buffer failed, err=%d\n",
    278 		       USBDEVNAME(sc->sc_dev), err);
    279 		usscanner_cleanup(sc);
    280 		USB_ATTACH_ERROR_RETURN;
    281 	}
    282 
    283 	sc->sc_intr_xfer = usbd_alloc_xfer(uaa->device, sc->sc_intr_pipe);
    284 	if (sc->sc_intr_xfer == NULL) {
    285 	  printf("%s: alloc intr xfer failed, err=%d\n",
    286 		 USBDEVNAME(sc->sc_dev), err);
    287 	  usscanner_cleanup(sc);
    288 	  USB_ATTACH_ERROR_RETURN;
    289         }
    290 
    291 	sc->sc_datain_xfer = usbd_alloc_xfer(uaa->device, sc->sc_in_pipe);
    292 	if (sc->sc_datain_xfer == NULL) {
    293 		printf("%s: alloc data xfer failed, err=%d\n",
    294 		       USBDEVNAME(sc->sc_dev), err);
    295 		usscanner_cleanup(sc);
    296 		USB_ATTACH_ERROR_RETURN;
    297 	}
    298 	err = usbd_map_alloc(sc->sc_datain_xfer);
    299 	if (err) {
    300 		printf("%s: alloc map failed, err=%d\n",
    301 		       USBDEVNAME(sc->sc_dev), err);
    302 		usscanner_cleanup(sc);
    303 		USB_ATTACH_ERROR_RETURN;
    304 	}
    305 
    306 	sc->sc_dataout_xfer = usbd_alloc_xfer(uaa->device, sc->sc_out_pipe);
    307 	if (sc->sc_dataout_xfer == NULL) {
    308 		printf("%s: alloc data xfer failed, err=%d\n",
    309 		       USBDEVNAME(sc->sc_dev), err);
    310 		usscanner_cleanup(sc);
    311 		USB_ATTACH_ERROR_RETURN;
    312 	}
    313 	err = usbd_map_alloc(sc->sc_dataout_xfer);
    314 	if (err) {
    315 		printf("%s: alloc map failed, err=%d\n",
    316 		       USBDEVNAME(sc->sc_dev), err);
    317 		usscanner_cleanup(sc);
    318 		USB_ATTACH_ERROR_RETURN;
    319 	}
    320 
    321 	/*
    322 	 * Fill in the adapter.
    323 	 */
    324 	sc->sc_adapter.adapt_request = usscanner_scsipi_request;
    325 	sc->sc_adapter.adapt_dev = &sc->sc_dev;
    326 	sc->sc_adapter.adapt_nchannels = 1;
    327 	sc->sc_adapter.adapt_openings = 1;
    328 	sc->sc_adapter.adapt_max_periph = 1;
    329 	sc->sc_adapter.adapt_minphys = usscanner_scsipi_minphys;
    330 
    331 #if NSCSIBUS > 0
    332 	/*
    333 	 * fill in the scsipi_channel.
    334 	 */
    335 	sc->sc_channel.chan_adapter = &sc->sc_adapter;
    336 	sc->sc_channel.chan_bustype = &scsi_bustype;
    337 	sc->sc_channel.chan_channel = 0;
    338 	sc->sc_channel.chan_ntargets = USSCANNER_SCSIID_DEVICE + 1;
    339 	sc->sc_channel.chan_nluns = 1;
    340 	sc->sc_channel.chan_id = USSCANNER_SCSIID_HOST;
    341 
    342 	usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
    343 			   USBDEV(sc->sc_dev));
    344 
    345 	sc->sc_child = config_found(&sc->sc_dev, &sc->sc_channel, scsiprint);
    346 
    347 	DPRINTFN(10, ("usscanner_attach: %p\n", sc->sc_udev));
    348 
    349 	USB_ATTACH_SUCCESS_RETURN;
    350 
    351 #else
    352 	/* No SCSI bus, just ignore it */
    353 	usscanner_cleanup(sc);
    354 
    355 	printf("%s: no scsibus configured, see usscanner(4) for details\n",
    356 	    USBDEVNAME(sc->sc_dev));
    357 
    358 	USB_ATTACH_ERROR_RETURN;
    359 
    360 #endif
    361 }
    362 
    363 USB_DETACH(usscanner)
    364 {
    365 	USB_DETACH_START(usscanner, sc);
    366 	int rv, s;
    367 
    368 	DPRINTF(("usscanner_detach: sc=%p flags=%d\n", sc, flags));
    369 
    370 	sc->sc_dying = 1;
    371 	/* Abort all pipes.  Causes processes waiting for transfer to wake. */
    372 	if (sc->sc_in_pipe != NULL)
    373 		usbd_abort_pipe(sc->sc_in_pipe);
    374 	if (sc->sc_intr_pipe != NULL)
    375 		usbd_abort_pipe(sc->sc_intr_pipe);
    376 	if (sc->sc_out_pipe != NULL)
    377 		usbd_abort_pipe(sc->sc_out_pipe);
    378 
    379 	s = splusb();
    380 	if (--sc->sc_refcnt >= 0) {
    381 		/* Wait for processes to go away. */
    382 		usb_detach_wait(USBDEV(sc->sc_dev));
    383 	}
    384 	splx(s);
    385 
    386 	if (sc->sc_child != NULL)
    387 		rv = config_detach(sc->sc_child, flags);
    388 	else
    389 		rv = 0;
    390 
    391 	usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
    392 			   USBDEV(sc->sc_dev));
    393 
    394 	return (rv);
    395 }
    396 
    397 Static void
    398 usscanner_cleanup(struct usscanner_softc *sc)
    399 {
    400 	if (sc->sc_in_pipe != NULL) {
    401 		usbd_close_pipe(sc->sc_in_pipe);
    402 		sc->sc_in_pipe = NULL;
    403 	}
    404 	if (sc->sc_intr_pipe != NULL) {
    405 		usbd_close_pipe(sc->sc_intr_pipe);
    406 		sc->sc_intr_pipe = NULL;
    407 	}
    408 	if (sc->sc_out_pipe != NULL) {
    409 		usbd_close_pipe(sc->sc_out_pipe);
    410 		sc->sc_out_pipe = NULL;
    411 	}
    412 	if (sc->sc_cmd_xfer != NULL) {
    413 		usbd_free_xfer(sc->sc_cmd_xfer);
    414 		sc->sc_cmd_xfer = NULL;
    415 	}
    416 	if (sc->sc_datain_xfer != NULL) {
    417 		usbd_free_xfer(sc->sc_datain_xfer);
    418 		sc->sc_datain_xfer = NULL;
    419 	}
    420 	if (sc->sc_dataout_xfer != NULL) {
    421 		usbd_free_xfer(sc->sc_dataout_xfer);
    422 		sc->sc_dataout_xfer = NULL;
    423 	}
    424 }
    425 
    426 int
    427 usscanner_activate(device_ptr_t self, enum devact act)
    428 {
    429 	struct usscanner_softc *sc = (struct usscanner_softc *)self;
    430 
    431 	switch (act) {
    432 	case DVACT_ACTIVATE:
    433 		return (EOPNOTSUPP);
    434 
    435 	case DVACT_DEACTIVATE:
    436 		sc->sc_dying = 1;
    437 		break;
    438 	}
    439 	return (0);
    440 }
    441 
    442 Static void
    443 usscanner_scsipi_minphys(struct buf *bp)
    444 {
    445 	if (bp->b_bcount > USSCANNER_MAX_TRANSFER_SIZE)
    446 		bp->b_bcount = USSCANNER_MAX_TRANSFER_SIZE;
    447 	minphys(bp);
    448 }
    449 
    450 Static void
    451 usscanner_sense(struct usscanner_softc *sc)
    452 {
    453 	struct scsipi_xfer *xs = sc->sc_xs;
    454 	struct scsipi_periph *periph = xs->xs_periph;
    455 	struct scsi_request_sense sense_cmd;
    456 	usbd_status err;
    457 
    458 	/* fetch sense data */
    459 	memset(&sense_cmd, 0, sizeof(sense_cmd));
    460 	sense_cmd.opcode = SCSI_REQUEST_SENSE;
    461 	sense_cmd.byte2 = periph->periph_lun << SCSI_CMD_LUN_SHIFT;
    462 	sense_cmd.length = sizeof xs->sense;
    463 
    464 	sc->sc_state = UAS_SENSECMD;
    465 	memcpy(sc->sc_cmd_buffer, &sense_cmd, sizeof sense_cmd);
    466 	usbd_setup_xfer(sc->sc_cmd_xfer, sc->sc_out_pipe, sc, sc->sc_cmd_buffer,
    467 	    sizeof sense_cmd, USBD_NO_COPY, USSCANNER_TIMEOUT,
    468 	    usscanner_sensecmd_cb);
    469 	err = usbd_transfer(sc->sc_cmd_xfer);
    470 	if (err == USBD_IN_PROGRESS)
    471 		return;
    472 
    473 	xs->error = XS_DRIVER_STUFFUP;
    474 	usscanner_done(sc);
    475 }
    476 
    477 Static void
    478 usscanner_intr_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
    479 		 usbd_status status)
    480 {
    481 	struct usscanner_softc *sc = priv;
    482 	int s;
    483 
    484 	DPRINTFN(10, ("usscanner_intr_cb status=%d\n", status));
    485 
    486 #ifdef USSCANNER_DEBUG
    487 	if (sc->sc_state != UAS_STATUS) {
    488 		printf("%s: !UAS_STATUS\n", USBDEVNAME(sc->sc_dev));
    489 	}
    490 	if (sc->sc_status != 0) {
    491 		printf("%s: status byte=0x%02x\n", USBDEVNAME(sc->sc_dev), sc->sc_status);
    492 	}
    493 #endif
    494 	/* XXX what should we do on non-0 status */
    495 
    496 	sc->sc_state = UAS_IDLE;
    497 
    498 	s = splbio();
    499 	scsipi_done(sc->sc_xs);
    500 	splx(s);
    501 }
    502 
    503 Static void
    504 usscanner_data_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
    505 		 usbd_status status)
    506 {
    507 	struct usscanner_softc *sc = priv;
    508 	struct scsipi_xfer *xs = sc->sc_xs;
    509 	u_int32_t len;
    510 
    511 	DPRINTFN(10, ("usscanner_data_cb status=%d\n", status));
    512 
    513 #ifdef USSCANNER_DEBUG
    514 	if (sc->sc_state != UAS_DATA) {
    515 		printf("%s: !UAS_DATA\n", USBDEVNAME(sc->sc_dev));
    516 	}
    517 #endif
    518 
    519 	usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL);
    520 
    521 	xs->resid = xs->datalen - len;
    522 
    523 	usbd_unmap_buffer(xfer);
    524 
    525 	switch (status) {
    526 	case USBD_NORMAL_COMPLETION:
    527 		xs->error = XS_NOERROR;
    528 		break;
    529 	case USBD_TIMEOUT:
    530 		xs->error = XS_TIMEOUT;
    531 		break;
    532 	case USBD_CANCELLED:
    533 		if (xs->error == XS_SENSE) {
    534 			usscanner_sense(sc);
    535 			return;
    536 		}
    537 		break;
    538 	default:
    539 		xs->error = XS_DRIVER_STUFFUP; /* XXX ? */
    540 		break;
    541 	}
    542 	usscanner_done(sc);
    543 }
    544 
    545 Static void
    546 usscanner_sensedata_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
    547 		       usbd_status status)
    548 {
    549 	struct usscanner_softc *sc = priv;
    550 	struct scsipi_xfer *xs = sc->sc_xs;
    551 	u_int32_t len;
    552 
    553 	DPRINTFN(10, ("usscanner_sensedata_cb status=%d\n", status));
    554 
    555 #ifdef USSCANNER_DEBUG
    556 	if (sc->sc_state != UAS_SENSEDATA) {
    557 		printf("%s: !UAS_SENSEDATA\n", USBDEVNAME(sc->sc_dev));
    558 	}
    559 #endif
    560 
    561 	usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL);
    562 	usbd_unmap_buffer(xfer);
    563 
    564 	switch (status) {
    565 	case USBD_NORMAL_COMPLETION:
    566 		if (len < sizeof xs->sense)
    567 			xs->error = XS_SHORTSENSE;
    568 		break;
    569 	case USBD_TIMEOUT:
    570 		xs->error = XS_TIMEOUT;
    571 		break;
    572 	case USBD_CANCELLED:
    573 		xs->error = XS_RESET;
    574 		break;
    575 	default:
    576 		xs->error = XS_DRIVER_STUFFUP; /* XXX ? */
    577 		break;
    578 	}
    579 	usscanner_done(sc);
    580 }
    581 
    582 Static void
    583 usscanner_done(struct usscanner_softc *sc)
    584 {
    585 	struct scsipi_xfer *xs = sc->sc_xs;
    586 	usbd_status err;
    587 
    588 	DPRINTFN(10,("usscanner_done: error=%d\n", sc->sc_xs->error));
    589 
    590 	sc->sc_state = UAS_STATUS;
    591 	usbd_setup_xfer(sc->sc_intr_xfer, sc->sc_intr_pipe, sc, &sc->sc_status,
    592 	    1, USBD_SHORT_XFER_OK | USBD_NO_COPY,
    593 	    USSCANNER_TIMEOUT, usscanner_intr_cb);
    594 	err = usbd_transfer(sc->sc_intr_xfer);
    595 	if (err == USBD_IN_PROGRESS)
    596 		return;
    597 	xs->error = XS_DRIVER_STUFFUP;
    598 }
    599 
    600 Static void
    601 usscanner_sensecmd_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
    602 		      usbd_status status)
    603 {
    604 	struct usscanner_softc *sc = priv;
    605 	struct scsipi_xfer *xs = sc->sc_xs;
    606 	usbd_status err;
    607 
    608 	DPRINTFN(10, ("usscanner_sensecmd_cb status=%d\n", status));
    609 
    610 #ifdef USSCANNER_DEBUG
    611 	if (usscannerdebug > 15)
    612 		xs->xs_periph->periph_flags |= 1; /* XXX 1 */
    613 
    614 	if (sc->sc_state != UAS_SENSECMD) {
    615 		printf("%s: !UAS_SENSECMD\n", USBDEVNAME(sc->sc_dev));
    616 		xs->error = XS_DRIVER_STUFFUP;
    617 		goto done;
    618 	}
    619 #endif
    620 
    621 	switch (status) {
    622 	case USBD_NORMAL_COMPLETION:
    623 		break;
    624 	case USBD_TIMEOUT:
    625 		xs->error = XS_TIMEOUT;
    626 		goto done;
    627 	default:
    628 		xs->error = XS_DRIVER_STUFFUP; /* XXX ? */
    629 		goto done;
    630 	}
    631 
    632 	sc->sc_state = UAS_SENSEDATA;
    633 	usbd_map_buffer(xfer, &xs->sense, sizeof xs->sense);
    634 	usbd_setup_xfer(sc->sc_datain_xfer, sc->sc_in_pipe, sc,
    635 	    &xs->sense,
    636 	    sizeof xs->sense, USBD_SHORT_XFER_OK | USBD_NO_COPY,
    637 	    USSCANNER_TIMEOUT, usscanner_sensedata_cb);
    638 	err = usbd_transfer(sc->sc_datain_xfer);
    639 	if (err == USBD_IN_PROGRESS)
    640 		return;
    641 	xs->error = XS_DRIVER_STUFFUP;
    642  done:
    643 	usscanner_done(sc);
    644 }
    645 
    646 Static void
    647 usscanner_cmd_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
    648 		 usbd_status status)
    649 {
    650 	struct usscanner_softc *sc = priv;
    651 	struct scsipi_xfer *xs = sc->sc_xs;
    652 	usbd_pipe_handle pipe;
    653 	usbd_status err;
    654 
    655 	DPRINTFN(10, ("usscanner_cmd_cb status=%d\n", status));
    656 
    657 #ifdef USSCANNER_DEBUG
    658 	if (usscannerdebug > 15)
    659 		xs->xs_periph->periph_flags |= 1;	/* XXX 1 */
    660 
    661 	if (sc->sc_state != UAS_CMD) {
    662 		printf("%s: !UAS_CMD\n", USBDEVNAME(sc->sc_dev));
    663 		xs->error = XS_DRIVER_STUFFUP;
    664 		goto done;
    665 	}
    666 #endif
    667 
    668 	switch (status) {
    669 	case USBD_NORMAL_COMPLETION:
    670 		break;
    671 	case USBD_TIMEOUT:
    672 		xs->error = XS_TIMEOUT;
    673 		goto done;
    674 	case USBD_CANCELLED:
    675 		goto done;
    676 	default:
    677 		xs->error = XS_DRIVER_STUFFUP; /* XXX ? */
    678 		goto done;
    679 	}
    680 
    681 	if (xs->datalen == 0) {
    682 		DPRINTFN(4, ("usscanner_cmd_cb: no data phase\n"));
    683 		xs->error = XS_NOERROR;
    684 		goto done;
    685 	}
    686 
    687 	if (xs->xs_control & XS_CTL_DATA_IN) {
    688 		DPRINTFN(4, ("usscanner_cmd_cb: data in len=%d\n",
    689 			     xs->datalen));
    690 		xfer = sc->sc_datain_xfer;
    691 		pipe = sc->sc_in_pipe;
    692 	} else {
    693 		DPRINTFN(4, ("usscanner_cmd_cb: data out len=%d\n",
    694 			     xs->datalen));
    695 		xfer = sc->sc_dataout_xfer;
    696 		pipe = sc->sc_out_pipe;
    697 	}
    698 	sc->sc_state = UAS_DATA;
    699 	usbd_map_buffer(xfer, xs->data, xs->datalen);
    700 	usbd_setup_xfer(xfer, pipe, sc, xs->data,
    701 	    xs->datalen, USBD_SHORT_XFER_OK | USBD_NO_COPY,
    702 	    xs->timeout, usscanner_data_cb);
    703 	err = usbd_transfer(xfer);
    704 	if (err == USBD_IN_PROGRESS)
    705 		return;
    706 	xs->error = XS_DRIVER_STUFFUP;
    707 
    708  done:
    709 	usscanner_done(sc);
    710 }
    711 
    712 Static void
    713 usscanner_scsipi_request(chan, req, arg)
    714 	struct scsipi_channel *chan;
    715 	scsipi_adapter_req_t req;
    716 	void *arg;
    717 {
    718 	struct scsipi_xfer *xs;
    719 	struct scsipi_periph *periph;
    720 	struct usscanner_softc *sc = (void *)chan->chan_adapter->adapt_dev;
    721 	usbd_status err;
    722 
    723 	switch (req) {
    724 	case ADAPTER_REQ_RUN_XFER:
    725 		xs = arg;
    726 		periph = xs->xs_periph;
    727 
    728 		DPRINTFN(8, ("%s: usscanner_scsipi_request: %d:%d "
    729 		    "xs=%p cmd=0x%02x datalen=%d (quirks=0x%x, poll=%d)\n",
    730 		    USBDEVNAME(sc->sc_dev),
    731 		    periph->periph_target, periph->periph_lun,
    732 		    xs, xs->cmd->opcode, xs->datalen,
    733 		    periph->periph_quirks, xs->xs_control & XS_CTL_POLL));
    734 
    735 		if (sc->sc_dying) {
    736 			xs->error = XS_DRIVER_STUFFUP;
    737 			goto done;
    738 		}
    739 
    740 #ifdef USSCANNER_DEBUG
    741 		if (periph->periph_target != USSCANNER_SCSIID_DEVICE) {
    742 			DPRINTF(("%s: wrong SCSI ID %d\n",
    743 			    USBDEVNAME(sc->sc_dev), periph->periph_target));
    744 			xs->error = XS_DRIVER_STUFFUP;
    745 			goto done;
    746 		}
    747 		if (sc->sc_state != UAS_IDLE) {
    748 			printf("%s: !UAS_IDLE\n", USBDEVNAME(sc->sc_dev));
    749 			xs->error = XS_DRIVER_STUFFUP;
    750 			goto done;
    751 		}
    752 #endif
    753 
    754 		if (xs->datalen > USSCANNER_MAX_TRANSFER_SIZE) {
    755 			printf("%s: usscanner_scsipi_request: large datalen,"
    756 			    " %d\n", USBDEVNAME(sc->sc_dev), xs->datalen);
    757 			xs->error = XS_DRIVER_STUFFUP;
    758 			goto done;
    759 		}
    760 
    761 		DPRINTFN(4, ("%s: usscanner_scsipi_request: async cmdlen=%d"
    762 		    " datalen=%d\n", USBDEVNAME(sc->sc_dev), xs->cmdlen,
    763 		    xs->datalen));
    764 		sc->sc_state = UAS_CMD;
    765 		sc->sc_xs = xs;
    766 		memcpy(sc->sc_cmd_buffer, xs->cmd, xs->cmdlen);
    767 		usbd_setup_xfer(sc->sc_cmd_xfer, sc->sc_out_pipe, sc,
    768 		    sc->sc_cmd_buffer, xs->cmdlen, USBD_NO_COPY,
    769 		    USSCANNER_TIMEOUT, usscanner_cmd_cb);
    770 		err = usbd_transfer(sc->sc_cmd_xfer);
    771 		if (err != USBD_IN_PROGRESS) {
    772 			xs->error = XS_DRIVER_STUFFUP;
    773 			goto done;
    774 		}
    775 
    776 		return;
    777 
    778 
    779  done:
    780 		sc->sc_state = UAS_IDLE;
    781 		scsipi_done(xs);
    782 		return;
    783 
    784 	case ADAPTER_REQ_GROW_RESOURCES:
    785 		/* XXX Not supported. */
    786 		return;
    787 	case ADAPTER_REQ_SET_XFER_MODE:
    788 		/* XXX Not supported. */
    789 		return;
    790 	}
    791 
    792 }
    793