941 lines
27 KiB
C
941 lines
27 KiB
C
/* $NetBSD: umass.c,v 1.25 2000/02/29 21:37:01 augustss Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1999 MAEKAWA Masahide <bishop@rr.iij4u.or.jp>,
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* Nick Hibma <hibma@skylink.it>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* FreeBSD: src/sys/dev/usb/umass.c,v 1.8 1999/06/20 15:46:13 n_hibma Exp
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*/
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/*
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* Universal Serial Bus Mass Storage Class Control/Interrupt/Bulk (CBI)
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* Specification:
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*
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* http://www.usb.org/developers/data/usbmass-cbi10.pdf
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*
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* Universal Serial Bus Mass Storage Bulk Only 1.0rc4 Specification:
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*
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* http://www.usb.org/developers/data/usbmassbulk_10rc4.pdf
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*
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* Relevant parts of the old spec (Bulk-only 0.9) have been quoted
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* in the source.
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*/
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/* To do:
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* x The umass_usb_transfer routine uses synchroneous transfers. This
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* should be changed to async and state handling.
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*
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* x Should handle more than just Iomega USB Zip drives. There are
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* a fair number of USB->SCSI dongles out there.
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*
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* x Need to implement SCSI command timeout/abort handling.
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*
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* x Add support for other than Bulk.
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*
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* x Add support for other than SCSI.
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*/
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/* Authors: (with short acronyms for comments)
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* NWH - Nick Hibma <hibma@skylink.it>
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* JRT - Jason R. Thorpe <thorpej@shagadelic.org>
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdi_util.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#if defined(USB_DEBUG) && !defined(UMASS_DEBUG)
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#define UMASS_DEBUG 1
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#endif
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#ifdef UMASS_DEBUG
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#define DPRINTF(m, x) if (umassdebug & (m)) logprintf x
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#define UDMASS_SCSI 0x00020000
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#define UDMASS_USB 0x00040000
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#define UDMASS_BULK 0x00080000
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#define UDMASS_ALL 0xffff0000
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int umassdebug = /* UDMASS_SCSI|UDMASS_BULK|UDMASS_USB */ 0;
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#else
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#define DPRINTF(m, x)
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#endif
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typedef struct umass_softc {
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USBBASEDEVICE sc_dev; /* base device */
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usbd_device_handle sc_udev;
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usbd_interface_handle sc_iface; /* the interface we use */
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u_int8_t sc_subclass; /* our USB subclass */
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u_int8_t sc_protocol; /* our USB protocol */
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u_int8_t sc_bulkout; /* bulk-out Endpoint Address */
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usbd_pipe_handle sc_bulkout_pipe;
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u_int8_t sc_bulkin; /* bulk-in Endpoint Address */
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usbd_pipe_handle sc_bulkin_pipe;
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struct scsipi_link sc_link; /* prototype for devs */
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struct scsipi_adapter sc_adapter;
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device_ptr_t sc_child; /* child device, for detach */
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int sc_refcnt;
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char sc_dying;
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} umass_softc_t;
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#define USBD_COMMAND_FAILED USBD_INVAL /* redefine some errors for */
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#define UMASS_SCSIID_HOST 0x00
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#define UMASS_SCSIID_DEVICE 0x01
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#define DIR_OUT 0
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#define DIR_IN 1
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#define DIR_NONE 2
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/* Bulk-Only specific request */
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#define UR_RESET 0xff
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#define UR_GET_MAX_LUN 0xfe
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/* Bulk-Only Mass Storage features */
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/* Command Block Wrapper */
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typedef struct {
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uDWord dCBWSignature;
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#define CBWSIGNATURE 0x43425355
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uDWord dCBWTag;
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uDWord dCBWDataTransferLength;
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uByte bCBWFlags;
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#define CBWFLAGS_OUT 0x00
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#define CBWFLAGS_IN 0x80
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uByte bCBWLUN;
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uByte bCDBLength;
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uByte CBWCDB[16];
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} usb_bulk_cbw_t;
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#define USB_BULK_CBW_SIZE 31
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/* Command Status Wrapper */
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typedef struct {
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uDWord dCSWSignature;
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#define CSWSIGNATURE 0x53425355
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uDWord dCSWTag;
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uDWord dCSWDataResidue;
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uByte bCSWStatus;
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#define CSWSTATUS_GOOD 0x0
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#define CSWSTATUS_FAILED 0x1
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#define CSWSTATUS_PHASE 0x2
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} usb_bulk_csw_t;
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#define USB_BULK_CSW_SIZE 13
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USB_DECLARE_DRIVER(umass);
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/* USB related functions */
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usbd_status umass_usb_transfer __P((umass_softc_t *,
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usbd_pipe_handle pipe,
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void *buf, int buflen,
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int flags, int *xfer_size));
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/* Bulk-Only related functions */
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usbd_status umass_bulk_reset __P((umass_softc_t *sc));
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usbd_status umass_bulk_get_max_lun __P((umass_softc_t *sc, u_int8_t *maxlun));
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usbd_status umass_bulk_transfer __P((umass_softc_t *sc, int lun,
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void *cmd, int cmdlen,
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void *data, int datalen,
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int dir, int *residue));
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/* SCSIPI related functions */
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struct scsipi_device umass_dev = {
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NULL, /* Use default error handler */
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NULL, /* have a queue, served by this */
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NULL, /* have no async handler */
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NULL, /* Use default `done' routine */
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};
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void umass_scsipi_minphys __P((struct buf *));
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int umass_scsipi_scsi_cmd __P((struct scsipi_xfer *));
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USB_MATCH(umass)
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{
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USB_MATCH_START(umass, uaa);
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usb_interface_descriptor_t *id;
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if (uaa->iface == NULL)
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return(UMATCH_NONE);
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id = usbd_get_interface_descriptor(uaa->iface);
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if (id != NULL
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&& id->bInterfaceClass == UICLASS_MASS
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&& id->bInterfaceSubClass == UISUBCLASS_SCSI
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&& id->bInterfaceProtocol == UIPROTO_MASS_BULK_P)
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return(UMATCH_IFACECLASS_IFACESUBCLASS_IFACEPROTO);
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return(UMATCH_NONE);
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}
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USB_ATTACH(umass)
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{
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USB_ATTACH_START(umass, sc, uaa);
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usb_interface_descriptor_t *id;
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usb_endpoint_descriptor_t *ed;
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char devinfo[1024];
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usbd_status err;
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int i;
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u_int8_t maxlun;
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const char *subclass, *protocol;
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sc->sc_udev = uaa->device;
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sc->sc_iface = uaa->iface;
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sc->sc_bulkout_pipe = NULL;
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sc->sc_bulkin_pipe = NULL;
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usbd_devinfo(uaa->device, 0, devinfo);
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USB_ATTACH_SETUP;
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id = usbd_get_interface_descriptor(sc->sc_iface);
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sc->sc_subclass = id->bInterfaceSubClass;
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sc->sc_protocol = id->bInterfaceProtocol;
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switch (sc->sc_subclass) {
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#if 0
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case UISUBCLASS_RBC: subclass = "RBC"; break;
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case UISUBCLASS_SFF8020I: subclass = "8020i"; break;
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case UISUBCLASS_QIC157: subclass = "QIC157"; break;
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case UISUBCLASS_UFI: subclass = "UFI"; break;
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case UISUBCLASS_SFF8070I: subclass = "8070i"; break;
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#endif
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case UISUBCLASS_SCSI: subclass = "SCSI"; break;
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default:
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panic("umass_attach: impossible subclass");
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}
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switch (sc->sc_protocol) {
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#if 0
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case UIPROTO_MASS_CBI_I: protocol = "CBI with CCI"; break;
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case UIPROTO_MASS_CBI: protocol = "CBI"; break;
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#endif
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case UIPROTO_MASS_BULK: /* XXX Is this really right? */
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case UIPROTO_MASS_BULK_P: protocol = "Bulk-Only"; break;
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default:
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panic("umass_attach: impossible protocol");
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}
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printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo);
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printf("%s: %s over %s (iclass %d/%d/%d)\n", USBDEVNAME(sc->sc_dev),
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subclass, protocol, id->bInterfaceClass, id->bInterfaceSubClass,
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id->bInterfaceProtocol);
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/*
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* A Bulk-Only Mass Storage device supports the following endpoints,
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* in addition to the Endpoint 0 for Control transfer that is required
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* of all USB devices:
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* (a) bulk-in endpoint.
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* (b) bulk-out endpoint.
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*
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* The endpoint addresses are not fixed, so we have to read them
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* from the device descriptors of the current interface.
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*/
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for (i = 0 ; i < id->bNumEndpoints ; i++) {
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ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i);
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if (ed == NULL) {
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printf("%s: could not read endpoint descriptor\n",
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USBDEVNAME(sc->sc_dev));
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USB_ATTACH_ERROR_RETURN;
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}
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if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN
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&& (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
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sc->sc_bulkin = ed->bEndpointAddress;
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} else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT
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&& (ed->bmAttributes & UE_XFERTYPE) == UE_BULK) {
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sc->sc_bulkout = ed->bEndpointAddress;
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}
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}
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/*
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* Get the maximum LUN supported by the device.
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*/
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err = umass_bulk_get_max_lun(sc, &maxlun);
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if (err) {
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printf("%s: unable to get Max Lun: %s\n",
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USBDEVNAME(sc->sc_dev), usbd_errstr(err));
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USB_ATTACH_ERROR_RETURN;
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}
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/* Open the bulk-in and -out pipe */
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err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout,
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USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
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if (err) {
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DPRINTF(UDMASS_USB,("cannot open bulk out pipe (address %d)\n",
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sc->sc_bulkout));
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USB_ATTACH_ERROR_RETURN;
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}
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err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin,
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USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe);
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if (err) {
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DPRINTF(UDMASS_USB,("cannot open bulk in pipe (address %d)\n",
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sc->sc_bulkin));
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usbd_close_pipe(sc->sc_bulkout_pipe);
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USB_ATTACH_ERROR_RETURN;
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}
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/* attach the device to the SCSIPI layer */
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sc->sc_adapter.scsipi_cmd = umass_scsipi_scsi_cmd;
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sc->sc_adapter.scsipi_minphys = umass_scsipi_minphys;
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sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
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sc->sc_link.adapter_softc = sc;
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sc->sc_link.scsipi_scsi.adapter_target = UMASS_SCSIID_HOST;
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sc->sc_link.adapter = &sc->sc_adapter;
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sc->sc_link.device = &umass_dev;
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sc->sc_link.openings = 1;
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sc->sc_link.scsipi_scsi.max_target = UMASS_SCSIID_DEVICE; /* XXX */
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sc->sc_link.scsipi_scsi.max_lun = maxlun;
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sc->sc_link.type = BUS_SCSI;
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sc->sc_child = config_found(&sc->sc_dev, &sc->sc_link, scsiprint);
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if (sc->sc_child == NULL) {
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usbd_close_pipe(sc->sc_bulkout_pipe);
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usbd_close_pipe(sc->sc_bulkin_pipe);
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/* XXX Not really an error. */
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USB_ATTACH_ERROR_RETURN;
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}
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usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
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USBDEV(sc->sc_dev));
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USB_ATTACH_SUCCESS_RETURN;
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}
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int
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umass_activate(self, act)
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struct device *self;
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enum devact act;
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{
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struct umass_softc *sc = (struct umass_softc *) self;
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int s, rv = 0;
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DPRINTF(UDMASS_USB, ("%s: umass_activate: %d\n",
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USBDEVNAME(sc->sc_dev), act));
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s = splhigh();
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switch (act) {
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case DVACT_ACTIVATE:
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rv = EOPNOTSUPP;
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break;
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case DVACT_DEACTIVATE:
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if (sc->sc_child == NULL || sc->sc_dying)
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break;
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rv = config_deactivate(sc->sc_child);
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DPRINTF(UDMASS_USB, ("%s: umass_activate: child "
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"returned %d\n", USBDEVNAME(sc->sc_dev), rv));
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if (rv == 0)
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sc->sc_dying = 1;
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break;
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}
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splx(s);
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return (rv);
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}
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USB_DETACH(umass)
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{
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USB_DETACH_START(umass, sc);
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int s, rv = 0;
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DPRINTF(UDMASS_USB, ("%s: umass_detach: flags 0x%x\n",
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USBDEVNAME(sc->sc_dev), flags));
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if (sc->sc_child != NULL)
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rv = config_detach(sc->sc_child, flags);
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if (rv != 0)
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return (rv);
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/* Abort the pipes to wake up any waiting processes. */
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if (sc->sc_bulkin_pipe != NULL)
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usbd_abort_pipe(sc->sc_bulkin_pipe);
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if (sc->sc_bulkout_pipe != NULL)
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usbd_abort_pipe(sc->sc_bulkout_pipe);
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s = splusb();
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if (--sc->sc_refcnt >= 0) {
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/* Wait for processes to go away. */
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usb_detach_wait(USBDEV(sc->sc_dev));
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}
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splx(s);
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if (sc->sc_bulkin_pipe != NULL) {
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usbd_close_pipe(sc->sc_bulkin_pipe);
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sc->sc_bulkin_pipe = NULL;
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}
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if (sc->sc_bulkout_pipe != NULL) {
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usbd_close_pipe(sc->sc_bulkout_pipe);
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sc->sc_bulkout_pipe = NULL;
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}
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usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
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USBDEV(sc->sc_dev));
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return (rv);
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}
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/* Performs a request over a pipe.
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*
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* flags: Can be set to USBD_SHORT_XFER_OK
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* xfer_size: if not null returns the nr. of bytes transferred
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*
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* If the returned error is USBD_STALLED the pipe stall has
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* been cleared again.
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*/
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usbd_status
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umass_usb_transfer(umass_softc_t *sc, usbd_pipe_handle pipe,
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void *buf, int buflen, int flags, int *xfer_size)
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{
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usbd_xfer_handle xfer;
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usbd_private_handle priv;
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void *buffer;
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int size;
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usbd_status err;
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/* A transfer is done synchronously. We create and schedule the
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* transfer and then wait for it to complete
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*/
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|
|
xfer = usbd_alloc_xfer(usbd_pipe2device_handle(pipe));
|
|
if (xfer == NULL) {
|
|
DPRINTF(UDMASS_USB, ("%s: not enough memory\n",
|
|
USBDEVNAME(sc->sc_dev)));
|
|
return USBD_NOMEM;
|
|
}
|
|
|
|
usbd_setup_xfer(xfer, pipe, 0, buf, buflen,flags, 3000/*ms*/, NULL);
|
|
err = usbd_sync_transfer(xfer);
|
|
if (err) {
|
|
DPRINTF(UDMASS_USB, ("%s: transfer failed: %s\n",
|
|
USBDEVNAME(sc->sc_dev), usbd_errstr(err)));
|
|
usbd_free_xfer(xfer);
|
|
return(err);
|
|
}
|
|
|
|
usbd_get_xfer_status(xfer, &priv, &buffer, &size, &err);
|
|
|
|
if (xfer_size != NULL)
|
|
*xfer_size = size;
|
|
|
|
usbd_free_xfer(xfer);
|
|
return(USBD_NORMAL_COMPLETION);
|
|
}
|
|
|
|
usbd_status
|
|
umass_bulk_get_max_lun(umass_softc_t *sc, u_int8_t *maxlun)
|
|
{
|
|
usbd_device_handle dev;
|
|
usb_device_request_t req;
|
|
usbd_status err;
|
|
usb_interface_descriptor_t *id;
|
|
|
|
*maxlun = 0; /* Default to 0. */
|
|
|
|
DPRINTF(UDMASS_BULK, ("%s: Get Max Lun\n", USBDEVNAME(sc->sc_dev)));
|
|
|
|
usbd_interface2device_handle(sc->sc_iface, &dev);
|
|
id = usbd_get_interface_descriptor(sc->sc_iface);
|
|
|
|
/* The Get Max Lun command is a class-specific request. */
|
|
req.bmRequestType = UT_READ_CLASS_INTERFACE;
|
|
req.bRequest = UR_GET_MAX_LUN;
|
|
USETW(req.wValue, 0);
|
|
USETW(req.wIndex, id->bInterfaceNumber);
|
|
USETW(req.wLength, 1);
|
|
|
|
err = usbd_do_request(dev, &req, maxlun);
|
|
switch (err) {
|
|
case USBD_NORMAL_COMPLETION:
|
|
DPRINTF(UDMASS_BULK, ("%s: Max Lun %d\n",
|
|
USBDEVNAME(sc->sc_dev), *maxlun));
|
|
break;
|
|
|
|
case USBD_STALLED:
|
|
/*
|
|
* Device doesn't support Get Max Lun request.
|
|
*/
|
|
err = USBD_NORMAL_COMPLETION;
|
|
DPRINTF(UDMASS_BULK, ("%s: Get Max Lun not supported\n",
|
|
USBDEVNAME(sc->sc_dev)));
|
|
break;
|
|
|
|
case USBD_SHORT_XFER:
|
|
/*
|
|
* XXX This must mean Get Max Lun is not supported, too!
|
|
*/
|
|
err = USBD_NORMAL_COMPLETION;
|
|
DPRINTF(UDMASS_BULK, ("%s: Get Max Lun SHORT_XFER\n",
|
|
USBDEVNAME(sc->sc_dev)));
|
|
break;
|
|
|
|
default:
|
|
printf("%s: Get Max Lun failed: %s\n",
|
|
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
|
|
/* XXX Should we port_reset the device? */
|
|
break;
|
|
}
|
|
|
|
return (err);
|
|
}
|
|
|
|
usbd_status
|
|
umass_bulk_reset(umass_softc_t *sc)
|
|
{
|
|
usbd_device_handle dev;
|
|
usb_device_request_t req;
|
|
usbd_status err;
|
|
usb_interface_descriptor_t *id;
|
|
|
|
/*
|
|
* 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
|
|
*/
|
|
|
|
DPRINTF(UDMASS_BULK, ("%s: Reset\n",
|
|
USBDEVNAME(sc->sc_dev)));
|
|
|
|
usbd_interface2device_handle(sc->sc_iface, &dev);
|
|
id = usbd_get_interface_descriptor(sc->sc_iface);
|
|
|
|
/* the reset command is a class specific interface request */
|
|
req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
|
|
req.bRequest = UR_RESET;
|
|
USETW(req.wValue, 0);
|
|
USETW(req.wIndex, id->bInterfaceNumber);
|
|
USETW(req.wLength, 0);
|
|
|
|
err = usbd_do_request(dev, &req, 0);
|
|
if (err) {
|
|
printf("%s: Reset failed, %s\n",
|
|
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
|
|
/* XXX we should port_reset the device */
|
|
return(err);
|
|
}
|
|
|
|
usbd_clear_endpoint_stall(sc->sc_bulkout_pipe);
|
|
usbd_clear_endpoint_stall(sc->sc_bulkin_pipe);
|
|
|
|
#if 0
|
|
/*
|
|
* XXX we should convert this into a more friendly delay.
|
|
* Perhaps a tsleep (or is this routine run from int context?)
|
|
*/
|
|
|
|
DELAY(2500000 /*us*/);
|
|
#else
|
|
usbd_delay_ms(dev, 2500);
|
|
#endif
|
|
|
|
return(USBD_NORMAL_COMPLETION);
|
|
}
|
|
|
|
/*
|
|
* Do a Bulk-Only transfer with cmdlen bytes from cmd, possibly
|
|
* a data phase of datalen bytes from/to data 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.
|
|
* The status returned is USBD_NORMAL_COMPLETION,
|
|
* USBD_IOERROR, USBD_COMMAND_FAILED.
|
|
* In the last case *residue is set to the residue from the CSW,
|
|
* otherwise to 0.
|
|
*
|
|
* For the functionality of this subroutine see the Mass Storage
|
|
* Spec., the graphs on page 14 and page 19 and beyong (v0.9 of
|
|
* the spec).
|
|
*/
|
|
|
|
usbd_status
|
|
umass_bulk_transfer(umass_softc_t *sc, int lun, void *cmd, int cmdlen,
|
|
void *data, int datalen, int dir, int *residue)
|
|
{
|
|
static int dCBWtag = 42; /* tag to be used in transfers,
|
|
* incremented at each transfer */
|
|
usb_bulk_cbw_t cbw; /* command block wrapper struct */
|
|
usb_bulk_csw_t csw; /* command status wrapper struct */
|
|
u_int32_t n = 0; /* number of bytes transported */
|
|
usbd_status err;
|
|
|
|
#ifdef UMASS_DEBUG
|
|
u_int8_t *c = cmd;
|
|
|
|
/* check the given arguments */
|
|
if (data == NULL && datalen > 0) { /* no buffer for transfer */
|
|
DPRINTF(UDMASS_BULK, ("%s: no buffer, but datalen > 0 !\n",
|
|
USBDEVNAME(sc->sc_dev)));
|
|
return USBD_IOERROR;
|
|
}
|
|
|
|
DPRINTF(UDMASS_BULK, ("%s: cmd: %d bytes (0x%02x%02x%02x%02x%02x%02x%s)"
|
|
", data: %d bytes, dir: %s\n",
|
|
USBDEVNAME(sc->sc_dev),
|
|
cmdlen, c[0], c[1], c[2], c[3], c[4], c[5],
|
|
(cmdlen > 6? "...":""),
|
|
datalen, (dir == DIR_IN? "in":"out")));
|
|
#endif
|
|
|
|
if (dir == DIR_NONE || datalen == 0) { /* make sure they correspond */
|
|
datalen = 0;
|
|
dir = DIR_NONE;
|
|
}
|
|
|
|
if (residue != NULL)
|
|
*residue = 0; /* reset residue */
|
|
|
|
/*
|
|
* Determine the direction of transferring data and data 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
|
|
*/
|
|
|
|
|
|
/*
|
|
* Command transport phase
|
|
*/
|
|
|
|
/* Fill in the Command Block Wrapper */
|
|
USETDW(cbw.dCBWSignature, CBWSIGNATURE);
|
|
USETDW(cbw.dCBWTag, dCBWtag++);
|
|
USETDW(cbw.dCBWDataTransferLength, datalen);
|
|
/* we do not check for DIR_NONE below (see text on dCBWFlags above) */
|
|
cbw.bCBWFlags = (dir == DIR_IN? CBWFLAGS_IN:CBWFLAGS_OUT);
|
|
cbw.bCBWLUN = lun;
|
|
cbw.bCDBLength = cmdlen;
|
|
bcopy(cmd, cbw.CBWCDB, cmdlen);
|
|
|
|
/* Send the CBW from host to device via bulk-out endpoint. */
|
|
err = umass_usb_transfer(sc, sc->sc_bulkout_pipe,
|
|
&cbw, USB_BULK_CBW_SIZE, 0, NULL);
|
|
if (err) {
|
|
DPRINTF(UDMASS_BULK, ("%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-Only MS Reset
|
|
*/
|
|
if (!sc->sc_dying)
|
|
umass_bulk_reset(sc);
|
|
return(USBD_IOERROR);
|
|
}
|
|
|
|
|
|
/*
|
|
* Data transport phase (only if there is data to be sent/received)
|
|
*/
|
|
|
|
if (dir == DIR_IN) {
|
|
/* we allow short transfers for bulk-in pipes */
|
|
err = umass_usb_transfer(sc, sc->sc_bulkin_pipe,
|
|
data, datalen,
|
|
USBD_SHORT_XFER_OK, &n);
|
|
if (err)
|
|
DPRINTF(UDMASS_BULK, ("%s: failed to receive data, "
|
|
"(%d bytes, n = %d), %s\n",
|
|
USBDEVNAME(sc->sc_dev),
|
|
datalen, n, usbd_errstr(err)));
|
|
} else if (dir == DIR_OUT) {
|
|
err = umass_usb_transfer(sc, sc->sc_bulkout_pipe,
|
|
data, datalen, 0, &n);
|
|
if (err)
|
|
DPRINTF(UDMASS_BULK, ("%s: failed to send data, "
|
|
"(%d bytes, n = %d), %s\n",
|
|
USBDEVNAME(sc->sc_dev),
|
|
datalen, n, usbd_errstr(err)));
|
|
}
|
|
if (err && err != USBD_STALLED)
|
|
return(USBD_IOERROR);
|
|
|
|
|
|
/*
|
|
* Status transport phase
|
|
*/
|
|
|
|
/* Read the Command Status Wrapper via bulk-in endpoint. */
|
|
err = umass_usb_transfer(sc, sc->sc_bulkin_pipe,
|
|
&csw, USB_BULK_CSW_SIZE, 0, NULL);
|
|
/* Try again if the bulk-in pipe was stalled */
|
|
if (err == USBD_STALLED) {
|
|
err = usbd_clear_endpoint_stall(sc->sc_bulkin_pipe);
|
|
if (!err) {
|
|
err = umass_usb_transfer(sc, sc->sc_bulkin_pipe,
|
|
&csw, USB_BULK_CSW_SIZE, 0, NULL);
|
|
}
|
|
}
|
|
if (err && err != USBD_STALLED)
|
|
return(USBD_IOERROR);
|
|
|
|
/*
|
|
* Check the CSW for status and validity, and check for fatal errors
|
|
*/
|
|
|
|
/* Invalid CSW: Wrong signature or wrong tag might indicate
|
|
* that the device is confused -> reset it.
|
|
* Other fatal errors: STALL on read of CSW and Phase error
|
|
* or unknown status.
|
|
*/
|
|
if (err == USBD_STALLED
|
|
|| UGETDW(csw.dCSWSignature) != CSWSIGNATURE
|
|
|| UGETDW(csw.dCSWTag) != UGETDW(cbw.dCBWTag)
|
|
|| csw.bCSWStatus == CSWSTATUS_PHASE
|
|
|| csw.bCSWStatus > CSWSTATUS_PHASE) {
|
|
if (err) {
|
|
printf("%s: failed to read CSW, %s\n",
|
|
USBDEVNAME(sc->sc_dev), usbd_errstr(err));
|
|
} else if (csw.bCSWStatus == CSWSTATUS_PHASE) {
|
|
printf("%s: Phase Error, residue = %d, n = %d\n",
|
|
USBDEVNAME(sc->sc_dev),
|
|
UGETDW(csw.dCSWDataResidue), n);
|
|
} else if (csw.bCSWStatus > CSWSTATUS_PHASE) {
|
|
printf("%s: Unknown status %d in CSW\n",
|
|
USBDEVNAME(sc->sc_dev), csw.bCSWStatus);
|
|
} else {
|
|
printf("%s: invalid CSW, sig = 0x%08x, tag = %d (!= %d)\n",
|
|
USBDEVNAME(sc->sc_dev),
|
|
UGETDW(csw.dCSWSignature),
|
|
UGETDW(csw.dCSWTag), UGETDW(cbw.dCBWTag));
|
|
}
|
|
umass_bulk_reset(sc);
|
|
return(USBD_IOERROR);
|
|
}
|
|
|
|
if (csw.bCSWStatus == CSWSTATUS_FAILED) {
|
|
DPRINTF(UDMASS_BULK, ("%s: Command Failed, "
|
|
"residue = %d, n = %d\n",
|
|
USBDEVNAME(sc->sc_dev),
|
|
UGETDW(csw.dCSWDataResidue), n));
|
|
if (residue != NULL)
|
|
*residue = UGETDW(csw.dCSWDataResidue);
|
|
return(USBD_COMMAND_FAILED);
|
|
}
|
|
|
|
/*
|
|
* XXX a residue not equal to 0 might indicate that something
|
|
* is wrong. Does CAM high level drivers check this for us?
|
|
*/
|
|
|
|
return(USBD_NORMAL_COMPLETION);
|
|
}
|
|
|
|
|
|
/*
|
|
* SCSIPI specific functions
|
|
*/
|
|
|
|
int
|
|
umass_scsipi_scsi_cmd(xs)
|
|
struct scsipi_xfer *xs;
|
|
{
|
|
struct scsipi_link *sc_link = xs->sc_link;
|
|
struct umass_softc *sc = sc_link->adapter_softc;
|
|
int residue, dir;
|
|
usbd_status err;
|
|
struct scsipi_sense sense_cmd;
|
|
|
|
DPRINTF(UDMASS_SCSI, ("%s: umass_scsi_cmd %d:%d\n",
|
|
USBDEVNAME(sc->sc_dev),
|
|
sc_link->scsipi_scsi.target, sc_link->scsipi_scsi.lun));
|
|
|
|
if (sc->sc_dying) {
|
|
xs->xs_status |= XS_STS_DONE;
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
scsipi_done(xs);
|
|
if (xs->xs_control & XS_CTL_POLL)
|
|
return (SUCCESSFULLY_QUEUED);
|
|
else
|
|
return (COMPLETE);
|
|
}
|
|
|
|
#ifdef UMASS_DEBUG
|
|
if (sc_link->scsipi_scsi.target != UMASS_SCSIID_DEVICE) {
|
|
DPRINTF(UDMASS_SCSI, ("%s: Wrong SCSI ID %d\n",
|
|
USBDEVNAME(sc->sc_dev),
|
|
sc_link->scsipi_scsi.target));
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
return (COMPLETE);
|
|
}
|
|
#endif
|
|
|
|
dir = DIR_NONE;
|
|
if (xs->datalen) {
|
|
switch (xs->xs_control & (XS_CTL_DATA_IN|XS_CTL_DATA_OUT)) {
|
|
case XS_CTL_DATA_IN:
|
|
dir = DIR_IN;
|
|
break;
|
|
case XS_CTL_DATA_OUT:
|
|
dir = DIR_OUT;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Make sure we don't lose our softc. */
|
|
sc->sc_refcnt++;
|
|
|
|
err = umass_bulk_transfer(sc, sc_link->scsipi_scsi.lun,
|
|
xs->cmd, xs->cmdlen, xs->data, xs->datalen, dir, &residue);
|
|
|
|
/*
|
|
* FAILED commands are supposed to be SCSI failed commands
|
|
* and are therefore considered to be successfull CDW/CSW
|
|
* transfers. PHASE errors are more serious and should return
|
|
* an error to the SCSIPI system.
|
|
*
|
|
* XXX This is however more based on empirical evidence than on
|
|
* hard proof from the Bulk-Only spec.
|
|
*/
|
|
if (err == USBD_NORMAL_COMPLETION) {
|
|
xs->error = XS_NOERROR;
|
|
} else if (sc->sc_dying) {
|
|
/* We are being detached, no use talking to the device. */
|
|
xs->error = XS_DRIVER_STUFFUP;
|
|
} else {
|
|
DPRINTF(UDMASS_USB|UDMASS_SCSI, ("%s: bulk transfer completed "
|
|
"with error %s\n", USBDEVNAME(sc->sc_dev),
|
|
usbd_errstr(err)));
|
|
|
|
/*
|
|
* Probably have a CHECK CONDITION here. Issue a
|
|
* REQUEST SENSE.
|
|
*/
|
|
memset(&sense_cmd, 0, sizeof(sense_cmd));
|
|
sense_cmd.opcode = REQUEST_SENSE;
|
|
sense_cmd.byte2 = sc_link->scsipi_scsi.lun <<
|
|
SCSI_CMD_LUN_SHIFT;
|
|
sense_cmd.length = sizeof(xs->sense);
|
|
|
|
if ((err = umass_bulk_transfer(sc, sc_link->scsipi_scsi.lun,
|
|
(struct scsipi_generic *)&sense_cmd, sizeof(sense_cmd),
|
|
&xs->sense, sizeof(xs->sense), DIR_IN, NULL)) !=
|
|
USBD_NORMAL_COMPLETION) {
|
|
DPRINTF(UDMASS_SCSI, ("%s: REQUEST SENSE failed: %s\n",
|
|
USBDEVNAME(sc->sc_dev), usbd_errstr(err)));
|
|
xs->error = XS_DRIVER_STUFFUP; /* XXX */
|
|
} else
|
|
xs->error = XS_SENSE;
|
|
}
|
|
xs->resid = residue;
|
|
|
|
DPRINTF(UDMASS_SCSI, ("%s: umass_scsi_cmd: error = %d, resid = 0x%x\n",
|
|
USBDEVNAME(sc->sc_dev), xs->error, xs->resid));
|
|
|
|
xs->xs_status |= XS_STS_DONE;
|
|
scsipi_done(xs);
|
|
|
|
/* We are done with the softc for now. */
|
|
if (--sc->sc_refcnt < 0)
|
|
usb_detach_wakeup(USBDEV(sc->sc_dev));
|
|
|
|
/*
|
|
* XXXJRT We must return successfully queued if we're an
|
|
* XXXJRT `asynchronous' command, otherwise `xs' will be
|
|
* XXXJRT freed twice: once in scsipi_done(), and once in
|
|
* XXXJRT scsi_scsipi_cmd().
|
|
*/
|
|
if ((xs->xs_control & XS_CTL_POLL) == 0)
|
|
return (SUCCESSFULLY_QUEUED);
|
|
|
|
return (COMPLETE);
|
|
}
|
|
|
|
void
|
|
umass_scsipi_minphys(bp)
|
|
struct buf *bp;
|
|
{
|
|
|
|
/* No limit here. */
|
|
minphys(bp);
|
|
}
|