Something went wrong. Try again.
(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
Something went wrong. Try again.
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771// SPDX-License-Identifier: GPL-2.0/* Driver for Microtek Scanmaker X6 USB scanner, and possibly others. * * (C) Copyright 2000 John Fremlin <vii@penguinpowered.com> * (C) Copyright 2000 Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de> * * Parts shamelessly stolen from usb-storage and copyright by their * authors. Thanks to Matt Dharm for giving us permission! * * This driver implements a SCSI host controller driver and a USB * device driver. To avoid confusion, all the USB related stuff is * prefixed by mts_usb_ and all the SCSI stuff by mts_scsi_. * * Microtek (www.microtek.com) did not release the specifications for * their USB protocol to us, so we had to reverse engineer them. We * don't know for which models they are valid. * * The X6 USB has three bulk endpoints, one output (0x1) down which * commands and outgoing data are sent, and two input: 0x82 from which * normal data is read from the scanner (in packets of maximum 32 * bytes) and from which the status byte is read, and 0x83 from which * the results of a scan (or preview) are read in up to 64 * 1024 byte * chunks by the Windows driver. We don't know how much it is possible * to read at a time from 0x83. * * It seems possible to read (with URB transfers) everything from 0x82 * in one go, without bothering to read in 32 byte chunks. * * There seems to be an optimisation of a further READ implicit if * you simply read from 0x83. * * Guessed protocol: * * Send raw SCSI command to EP 0x1 * * If there is data to receive: * If the command was READ datatype=image: * Read a lot of data from EP 0x83 * Else: * Read data from EP 0x82 * Else: * If there is data to transmit: * Write it to EP 0x1 * * Read status byte from EP 0x82 * * References: * * The SCSI command set for the scanner is available from * ftp://ftp.microtek.com/microtek/devpack/ * * Microtek NV sent us a more up to date version of the document. If * you want it, just send mail. * * Status: * * Untested with multiple scanners. * Untested on a bigendian machine. * * History: * * 20000417 starting history * 20000417 fixed load oops * 20000417 fixed unload oops * 20000419 fixed READ IMAGE detection * 20000424 started conversion to use URBs * 20000502 handled short transfers as errors * 20000513 rename and organisation of functions (john) * 20000513 added IDs for all products supported by Windows driver (john) * 20000514 Rewrote mts_scsi_queuecommand to use URBs (john) * 20000514 Version 0.0.8j * 20000514 Fix reporting of non-existent devices to SCSI layer (john) * 20000514 Added MTS_DEBUG_INT (john) * 20000514 Changed "usb-microtek" to "microtek" for consistency (john) * 20000514 Stupid bug fixes (john) * 20000514 Version 0.0.9j * 20000515 Put transfer context and URB in mts_desc (john) * 20000515 Added prelim turn off debugging support (john) * 20000515 Version 0.0.10j * 20000515 Fixed up URB allocation (clear URB on alloc) (john) * 20000515 Version 0.0.11j * 20000516 Removed unnecessary spinlock in mts_transfer_context (john) * 20000516 Removed unnecessary up on instance lock in mts_remove_nolock (john) * 20000516 Implemented (badly) scsi_abort (john) * 20000516 Version 0.0.12j * 20000517 Hopefully removed mts_remove_nolock quasideadlock (john) * 20000517 Added mts_debug_dump to print ll USB info (john) * 20000518 Tweaks and documentation updates (john) * 20000518 Version 0.0.13j * 20000518 Cleaned up abort handling (john) * 20000523 Removed scsi_command and various scsi_..._resets (john) * 20000523 Added unlink URB on scsi_abort, now OHCI supports it (john) * 20000523 Fixed last tiresome compile warning (john) * 20000523 Version 0.0.14j (though version 0.1 has come out?) * 20000602 Added primitive reset * 20000602 Version 0.2.0 * 20000603 various cosmetic changes * 20000603 Version 0.2.1 * 20000620 minor cosmetic changes * 20000620 Version 0.2.2 * 20000822 Hopefully fixed deadlock in mts_remove_nolock() * 20000822 Fixed minor race in mts_transfer_cleanup() * 20000822 Fixed deadlock on submission error in queuecommand * 20000822 Version 0.2.3 * 20000913 Reduced module size if debugging is off * 20000913 Version 0.2.4 * 20010210 New abort logic * 20010210 Version 0.3.0 * 20010217 Merged scatter/gather * 20010218 Version 0.4.0 * 20010218 Cosmetic fixes * 20010218 Version 0.4.1 * 20010306 Abort while using scatter/gather * 20010306 Version 0.4.2 * 20010311 Remove all timeouts and tidy up generally (john) * 20010320 check return value of scsi_register() * 20010320 Version 0.4.3 * 20010408 Identify version on module load. * 20011003 Fix multiple requests */
#include <linux/module.h>#include <linux/kernel.h>#include <linux/signal.h>#include <linux/errno.h>#include <linux/random.h>#include <linux/poll.h>#include <linux/slab.h>#include <linux/spinlock.h>#include <linux/usb.h>#include <linux/proc_fs.h>#include <linux/atomic.h>#include <linux/blkdev.h>
#include <scsi/scsi.h>#include <scsi/scsi_cmnd.h>#include <scsi/scsi_device.h>#include <scsi/scsi_eh.h>#include <scsi/scsi_host.h>#include <scsi/scsi_tcq.h>
#include "microtek.h"
#define DRIVER_AUTHOR "John Fremlin <vii@penguinpowered.com>, Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>"#define DRIVER_DESC "Microtek Scanmaker X6 USB scanner driver"
/* Should we do debugging? */
//#define MTS_DO_DEBUG
/* USB layer driver interface */
static int mts_usb_probe(struct usb_interface *intf, const struct usb_device_id *id);static void mts_usb_disconnect(struct usb_interface *intf);
static const struct usb_device_id mts_usb_ids[];
static struct usb_driver mts_usb_driver = { .name = "microtekX6", .probe = mts_usb_probe, .disconnect = mts_usb_disconnect, .id_table = mts_usb_ids,};
/* Internal driver stuff */
#define MTS_VERSION "0.4.3"#define MTS_NAME "microtek usb (rev " MTS_VERSION "): "
#if defined MTS_DO_DEBUG
#define MTS_DEBUG(x...) \ printk( KERN_DEBUG MTS_NAME x )
#define MTS_DEBUG_INT() \ do { MTS_DEBUG("transfer = 0x%x context = 0x%x\n",(int)transfer,(int)context ); \ MTS_DEBUG("status = 0x%x data-length = 0x%x sent = 0x%x\n",transfer->status,(int)context->data_length, (int)transfer->actual_length ); \ mts_debug_dump(context->instance);\ } while(0)#else
#define MTS_NUL_STATEMENT do { } while(0)
#define MTS_DEBUG(x...) MTS_NUL_STATEMENT#define MTS_DEBUG_INT() MTS_NUL_STATEMENT
#endif
#define MTS_INT_INIT()\ struct mts_transfer_context* context = (struct mts_transfer_context*)transfer->context; \ MTS_DEBUG_INT();\
#ifdef MTS_DO_DEBUG
static inline void mts_debug_dump(struct mts_desc* desc) { MTS_DEBUG("desc at 0x%x: toggle = %02x%02x\n", (int)desc, (int)desc->usb_dev->toggle[1],(int)desc->usb_dev->toggle[0] ); MTS_DEBUG("ep_out=%x ep_response=%x ep_image=%x\n", usb_sndbulkpipe(desc->usb_dev,desc->ep_out), usb_rcvbulkpipe(desc->usb_dev,desc->ep_response), usb_rcvbulkpipe(desc->usb_dev,desc->ep_image) );}
static inline void mts_show_command(struct scsi_cmnd *srb){ char *what = NULL;
switch (srb->cmnd[0]) { case TEST_UNIT_READY: what = "TEST_UNIT_READY"; break; case REZERO_UNIT: what = "REZERO_UNIT"; break; case REQUEST_SENSE: what = "REQUEST_SENSE"; break; case FORMAT_UNIT: what = "FORMAT_UNIT"; break; case READ_BLOCK_LIMITS: what = "READ_BLOCK_LIMITS"; break; case REASSIGN_BLOCKS: what = "REASSIGN_BLOCKS"; break; case READ_6: what = "READ_6"; break; case WRITE_6: what = "WRITE_6"; break; case SEEK_6: what = "SEEK_6"; break; case READ_REVERSE: what = "READ_REVERSE"; break; case WRITE_FILEMARKS: what = "WRITE_FILEMARKS"; break; case SPACE: what = "SPACE"; break; case INQUIRY: what = "INQUIRY"; break; case RECOVER_BUFFERED_DATA: what = "RECOVER_BUFFERED_DATA"; break; case MODE_SELECT: what = "MODE_SELECT"; break; case RESERVE: what = "RESERVE"; break; case RELEASE: what = "RELEASE"; break; case COPY: what = "COPY"; break; case ERASE: what = "ERASE"; break; case MODE_SENSE: what = "MODE_SENSE"; break; case START_STOP: what = "START_STOP"; break; case RECEIVE_DIAGNOSTIC: what = "RECEIVE_DIAGNOSTIC"; break; case SEND_DIAGNOSTIC: what = "SEND_DIAGNOSTIC"; break; case ALLOW_MEDIUM_REMOVAL: what = "ALLOW_MEDIUM_REMOVAL"; break; case SET_WINDOW: what = "SET_WINDOW"; break; case READ_CAPACITY: what = "READ_CAPACITY"; break; case READ_10: what = "READ_10"; break; case WRITE_10: what = "WRITE_10"; break; case SEEK_10: what = "SEEK_10"; break; case WRITE_VERIFY: what = "WRITE_VERIFY"; break; case VERIFY: what = "VERIFY"; break; case SEARCH_HIGH: what = "SEARCH_HIGH"; break; case SEARCH_EQUAL: what = "SEARCH_EQUAL"; break; case SEARCH_LOW: what = "SEARCH_LOW"; break; case SET_LIMITS: what = "SET_LIMITS"; break; case READ_POSITION: what = "READ_POSITION"; break; case SYNCHRONIZE_CACHE: what = "SYNCHRONIZE_CACHE"; break; case LOCK_UNLOCK_CACHE: what = "LOCK_UNLOCK_CACHE"; break; case READ_DEFECT_DATA: what = "READ_DEFECT_DATA"; break; case MEDIUM_SCAN: what = "MEDIUM_SCAN"; break; case COMPARE: what = "COMPARE"; break; case COPY_VERIFY: what = "COPY_VERIFY"; break; case WRITE_BUFFER: what = "WRITE_BUFFER"; break; case READ_BUFFER: what = "READ_BUFFER"; break; case UPDATE_BLOCK: what = "UPDATE_BLOCK"; break; case READ_LONG: what = "READ_LONG"; break; case WRITE_LONG: what = "WRITE_LONG"; break; case CHANGE_DEFINITION: what = "CHANGE_DEFINITION"; break; case WRITE_SAME: what = "WRITE_SAME"; break; case READ_TOC: what = "READ_TOC"; break; case LOG_SELECT: what = "LOG_SELECT"; break; case LOG_SENSE: what = "LOG_SENSE"; break; case MODE_SELECT_10: what = "MODE_SELECT_10"; break; case MODE_SENSE_10: what = "MODE_SENSE_10"; break; case MOVE_MEDIUM: what = "MOVE_MEDIUM"; break; case READ_12: what = "READ_12"; break; case WRITE_12: what = "WRITE_12"; break; case WRITE_VERIFY_12: what = "WRITE_VERIFY_12"; break; case SEARCH_HIGH_12: what = "SEARCH_HIGH_12"; break; case SEARCH_EQUAL_12: what = "SEARCH_EQUAL_12"; break; case SEARCH_LOW_12: what = "SEARCH_LOW_12"; break; case READ_ELEMENT_STATUS: what = "READ_ELEMENT_STATUS"; break; case SEND_VOLUME_TAG: what = "SEND_VOLUME_TAG"; break; case WRITE_LONG_2: what = "WRITE_LONG_2"; break; default: MTS_DEBUG("can't decode command\n"); goto out; break; } MTS_DEBUG( "Command %s (%d bytes)\n", what, srb->cmd_len);
out: MTS_DEBUG( " %10ph\n", srb->cmnd);}
#else
static inline void mts_show_command(struct scsi_cmnd * dummy){}
static inline void mts_debug_dump(struct mts_desc* dummy){}
#endif
static inline void mts_urb_abort(struct mts_desc* desc) { mts_debug_dump(desc);
usb_kill_urb( desc->urb );}
static int mts_sdev_init (struct scsi_device *s){ s->inquiry_len = 0x24; return 0;}
static int mts_scsi_abort(struct scsi_cmnd *srb){ struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
mts_urb_abort(desc);
return FAILED;}
static int mts_scsi_host_reset(struct scsi_cmnd *srb){ struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]); int result;
mts_debug_dump(desc);
result = usb_lock_device_for_reset(desc->usb_dev, desc->usb_intf); if (result == 0) { result = usb_reset_device(desc->usb_dev); usb_unlock_device(desc->usb_dev); } return result ? FAILED : SUCCESS;}
static enum scsi_qc_status mts_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *srb);
static void mts_transfer_cleanup( struct urb *transfer );static void mts_do_sg(struct urb * transfer);
static inlinevoid mts_int_submit_urb (struct urb* transfer, int pipe, void* data, unsigned length, usb_complete_t callback )/* Interrupt context! */
/* Holding transfer->context->lock! */{ int res;
MTS_INT_INIT();
usb_fill_bulk_urb(transfer, context->instance->usb_dev, pipe, data, length, callback, context );
res = usb_submit_urb( transfer, GFP_ATOMIC ); if ( unlikely(res) ) { dev_err(&context->instance->usb_dev->dev, "could not submit URB! Error was %d\n",(int)res ); set_host_byte(context->srb, DID_ERROR); mts_transfer_cleanup(transfer); }}
static void mts_transfer_cleanup( struct urb *transfer )/* Interrupt context! */{ MTS_INT_INIT();
if ( likely(context->final_callback != NULL) ) context->final_callback(context->srb);}
static void mts_transfer_done( struct urb *transfer ){ MTS_INT_INIT();
context->srb->result &= MTS_SCSI_ERR_MASK; context->srb->result |= (unsigned)(*context->scsi_status)<<1;
mts_transfer_cleanup(transfer);}
static void mts_get_status( struct urb *transfer )/* Interrupt context! */{ MTS_INT_INIT();
mts_int_submit_urb(transfer, usb_rcvbulkpipe(context->instance->usb_dev, context->instance->ep_response), context->scsi_status, 1, mts_transfer_done );}
static void mts_data_done( struct urb* transfer )/* Interrupt context! */{ int status = transfer->status; MTS_INT_INIT();
if ( context->data_length != transfer->actual_length ) { scsi_set_resid(context->srb, context->data_length - transfer->actual_length); } else if ( unlikely(status) ) { set_host_byte(context->srb, (status == -ENOENT ? DID_ABORT : DID_ERROR)); }
mts_get_status(transfer);}
static void mts_command_done( struct urb *transfer )/* Interrupt context! */{ int status = transfer->status; MTS_INT_INIT();
if ( unlikely(status) ) { if (status == -ENOENT) { /* We are being killed */ set_host_byte(context->srb, DID_ABORT); } else { /* A genuine error has occurred */ set_host_byte(context->srb, DID_ERROR); } mts_transfer_cleanup(transfer);
return; }
if (context->srb->cmnd[0] == REQUEST_SENSE) { mts_int_submit_urb(transfer, context->data_pipe, context->srb->sense_buffer, context->data_length, mts_data_done); } else { if ( context->data ) { mts_int_submit_urb(transfer, context->data_pipe, context->data, context->data_length, scsi_sg_count(context->srb) > 1 ? mts_do_sg : mts_data_done); } else { mts_get_status(transfer); } }}
static void mts_do_sg (struct urb* transfer){ int status = transfer->status; MTS_INT_INIT();
MTS_DEBUG("Processing fragment %d of %d\n", context->fragment, scsi_sg_count(context->srb));
if (unlikely(status)) { set_host_byte(context->srb, (status == -ENOENT ? DID_ABORT : DID_ERROR)); mts_transfer_cleanup(transfer); return; }
context->curr_sg = sg_next(context->curr_sg); mts_int_submit_urb(transfer, context->data_pipe, sg_virt(context->curr_sg), context->curr_sg->length, sg_is_last(context->curr_sg) ? mts_data_done : mts_do_sg);}
static const u8 mts_read_image_sig[] = { 0x28, 00, 00, 00 };static const u8 mts_read_image_sig_len = 4;static const unsigned char mts_direction[256/8] = { 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77, 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
#define MTS_DIRECTION_IS_IN(x) ((mts_direction[x>>3] >> (x & 7)) & 1)
static voidmts_build_transfer_context(struct scsi_cmnd *srb, struct mts_desc* desc){ int pipe;
desc->context.instance = desc; desc->context.srb = srb;
if (!scsi_bufflen(srb)) { desc->context.data = NULL; desc->context.data_length = 0; return; } else { desc->context.curr_sg = scsi_sglist(srb); desc->context.data = sg_virt(desc->context.curr_sg); desc->context.data_length = desc->context.curr_sg->length; }
/* can't rely on srb->sc_data_direction */
/* Brutally ripped from usb-storage */
if ( !memcmp( srb->cmnd, mts_read_image_sig, mts_read_image_sig_len )) { pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_image); MTS_DEBUG( "transferring from desc->ep_image == %d\n", (int)desc->ep_image ); } else if ( MTS_DIRECTION_IS_IN(srb->cmnd[0]) ) { pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_response); MTS_DEBUG( "transferring from desc->ep_response == %d\n", (int)desc->ep_response); } else { MTS_DEBUG("transferring to desc->ep_out == %d\n", (int)desc->ep_out); pipe = usb_sndbulkpipe(desc->usb_dev,desc->ep_out); } desc->context.data_pipe = pipe;}
static enum scsi_qc_status mts_scsi_queuecommand_lck(struct scsi_cmnd *srb){ mts_scsi_cmnd_callback callback = scsi_done; struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]); int res;
mts_show_command(srb); mts_debug_dump(desc);
if ( srb->device->lun || srb->device->id || srb->device->channel ) {
MTS_DEBUG("Command to LUN=%d ID=%d CHANNEL=%d from SCSI layer\n",(int)srb->device->lun,(int)srb->device->id, (int)srb->device->channel );
MTS_DEBUG("this device doesn't exist\n");
set_host_byte(srb, DID_BAD_TARGET);
if(likely(callback != NULL)) callback(srb);
goto out; }
usb_fill_bulk_urb(desc->urb, desc->usb_dev, usb_sndbulkpipe(desc->usb_dev,desc->ep_out), srb->cmnd, srb->cmd_len, mts_command_done, &desc->context );
mts_build_transfer_context( srb, desc ); desc->context.final_callback = callback; /* here we need ATOMIC as we are called with the iolock */ res=usb_submit_urb(desc->urb, GFP_ATOMIC);
if(unlikely(res)){ dev_err(&desc->usb_dev->dev, "error %d submitting URB\n",(int)res); set_host_byte(srb, DID_ERROR);
if(likely(callback != NULL)) callback(srb);
}out: return 0;}
static DEF_SCSI_QCMD(mts_scsi_queuecommand)
static const struct scsi_host_template mts_scsi_host_template = { .module = THIS_MODULE, .name = "microtekX6", .proc_name = "microtekX6", .queuecommand = mts_scsi_queuecommand, .eh_abort_handler = mts_scsi_abort, .eh_host_reset_handler = mts_scsi_host_reset, .sg_tablesize = SG_ALL, .can_queue = 1, .this_id = -1, .emulated = 1, .dma_alignment = 511, .sdev_init = mts_sdev_init, .max_sectors= 256, /* 128 K */};
/* The entries of microtek_table must correspond, line-by-line to the entries of mts_supported_products[]. */
static const struct usb_device_id mts_usb_ids[] ={ { USB_DEVICE(0x4ce, 0x0300) }, { USB_DEVICE(0x5da, 0x0094) }, { USB_DEVICE(0x5da, 0x0099) }, { USB_DEVICE(0x5da, 0x009a) }, { USB_DEVICE(0x5da, 0x00a0) }, { USB_DEVICE(0x5da, 0x00a3) }, { USB_DEVICE(0x5da, 0x80a3) }, { USB_DEVICE(0x5da, 0x80ac) }, { USB_DEVICE(0x5da, 0x00b6) }, { } /* Terminating entry */};
MODULE_DEVICE_TABLE (usb, mts_usb_ids);
static int mts_usb_probe(struct usb_interface *intf, const struct usb_device_id *id){ int i; int ep_out = -1; int ep_in_set[3]; /* this will break if we have more than three endpoints which is why we check */ int *ep_in_current = ep_in_set; int err_retval = -ENOMEM;
struct mts_desc * new_desc; struct usb_device *dev = interface_to_usbdev (intf);
/* the current altsetting on the interface we're probing */ struct usb_host_interface *altsetting;
MTS_DEBUG( "usb-device descriptor at %x\n", (int)dev );
MTS_DEBUG( "product id = 0x%x, vendor id = 0x%x\n", le16_to_cpu(dev->descriptor.idProduct), le16_to_cpu(dev->descriptor.idVendor) );
/* the current altsetting on the interface we're probing */ altsetting = intf->cur_altsetting;
/* Check if the config is sane */
if ( altsetting->desc.bNumEndpoints != MTS_EP_TOTAL ) { dev_warn(&dev->dev, "expecting %d got %d endpoints! Bailing out.\n", (int)MTS_EP_TOTAL, (int)altsetting->desc.bNumEndpoints ); return -ENODEV; }
for( i = 0; i < altsetting->desc.bNumEndpoints; i++ ) { if (usb_endpoint_is_bulk_in(&altsetting->endpoint[i].desc)) { *ep_in_current++ = usb_endpoint_num(&altsetting->endpoint[i].desc); } else if (usb_endpoint_is_bulk_out(&altsetting->endpoint[i].desc)) { if (ep_out == -1) { ep_out = usb_endpoint_num(&altsetting->endpoint[i].desc); } else { dev_warn(&dev->dev, "can only deal with bulk endpoints; endpoint %d is not bulk.\n", usb_endpoint_num(&altsetting->endpoint[i].desc)); return -ENODEV; } } else { dev_warn(&dev->dev, "can only deal with bulk endpoints; endpoint %d is not bulk.\n", usb_endpoint_num(&altsetting->endpoint[i].desc)); } }
if (ep_in_current != &ep_in_set[2]) { dev_warn(&dev->dev, "couldn't find two input bulk endpoints. Bailing out.\n"); return -ENODEV; }
if ( ep_out == -1 ) { dev_warn(&dev->dev, "couldn't find an output bulk endpoint. Bailing out.\n" ); return -ENODEV; }
new_desc = kzalloc_obj(struct mts_desc); if (!new_desc) goto out;
new_desc->urb = usb_alloc_urb(0, GFP_KERNEL); if (!new_desc->urb) goto out_kfree;
new_desc->context.scsi_status = kmalloc(1, GFP_KERNEL); if (!new_desc->context.scsi_status) goto out_free_urb;
new_desc->usb_dev = dev; new_desc->usb_intf = intf;
/* endpoints */ new_desc->ep_out = ep_out; new_desc->ep_response = ep_in_set[0]; new_desc->ep_image = ep_in_set[1];
if ( new_desc->ep_out != MTS_EP_OUT ) dev_warn(&dev->dev, "will this work? Command EP is not usually %d\n", (int)new_desc->ep_out );
if ( new_desc->ep_response != MTS_EP_RESPONSE ) dev_warn(&dev->dev, "will this work? Response EP is not usually %d\n", (int)new_desc->ep_response );
if ( new_desc->ep_image != MTS_EP_IMAGE ) dev_warn(&dev->dev, "will this work? Image data EP is not usually %d\n", (int)new_desc->ep_image );
new_desc->host = scsi_host_alloc(&mts_scsi_host_template, sizeof(new_desc)); if (!new_desc->host) goto out_kfree2;
new_desc->host->hostdata[0] = (unsigned long)new_desc; if (scsi_add_host(new_desc->host, &dev->dev)) { err_retval = -EIO; goto out_host_put; } scsi_scan_host(new_desc->host);
usb_set_intfdata(intf, new_desc); return 0;
out_host_put: scsi_host_put(new_desc->host); out_kfree2: kfree(new_desc->context.scsi_status); out_free_urb: usb_free_urb(new_desc->urb); out_kfree: kfree(new_desc); out: return err_retval;}
static void mts_usb_disconnect (struct usb_interface *intf){ struct mts_desc *desc = usb_get_intfdata(intf);
usb_set_intfdata(intf, NULL);
usb_kill_urb(desc->urb); scsi_remove_host(desc->host);
scsi_host_put(desc->host); usb_free_urb(desc->urb); kfree(desc->context.scsi_status); kfree(desc);}
module_usb_driver(mts_usb_driver);
MODULE_AUTHOR( DRIVER_AUTHOR );MODULE_DESCRIPTION( DRIVER_DESC );MODULE_LICENSE("GPL");