microtek.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:28k
- /* 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 SMP.
- * 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-existant 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
- * 20020618 Version 0.4.4
- * 20020618 Confirm to utterly stupid rules about io_request_lock
- */
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/signal.h>
- #include <linux/errno.h>
- #include <linux/random.h>
- #include <linux/poll.h>
- #include <linux/init.h>
- #include <linux/slab.h>
- #include <linux/spinlock.h>
- #include <linux/smp_lock.h>
- #include <linux/usb.h>
- #include <linux/proc_fs.h>
- #include <asm/atomic.h>
- #include <linux/blk.h>
- #include "../scsi/scsi.h"
- #include "../scsi/hosts.h"
- #include "../scsi/sd.h"
- #include "microtek.h"
- /*
- * Version Information
- */
- #define DRIVER_VERSION "v0.4.4"
- #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 void *mts_usb_probe(struct usb_device *dev, unsigned int interface,
- const struct usb_device_id *id);
- static void mts_usb_disconnect(struct usb_device *dev, void *ptr);
- static 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 "): "
- #define MTS_WARNING(x...)
- printk( KERN_WARNING MTS_NAME x )
- #define MTS_ERROR(x...)
- printk( KERN_ERR MTS_NAME x )
- #define MTS_INT_ERROR(x...)
- MTS_ERROR(x)
- #define MTS_MESSAGE(x...)
- printk( KERN_INFO MTS_NAME x )
- #if defined MTS_DO_DEBUG
- #define MTS_DEBUG(x...)
- printk( KERN_DEBUG MTS_NAME x )
- #define MTS_DEBUG_GOT_HERE()
- MTS_DEBUG("got to %s:%d (%s)n", __FILE__, (int)__LINE__, __PRETTY_FUNCTION__ )
- #define MTS_DEBUG_INT()
- do { MTS_DEBUG_GOT_HERE();
- MTS_DEBUG("transfer = 0x%x context = 0x%xn",(int)transfer,(int)context );
- MTS_DEBUG("status = 0x%x data-length = 0x%x sent = 0x%xn",(int)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_GOT_HERE() 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: halted = %02x%02x, toggle = %02x%02xn",
- (int)desc,(int)desc->usb_dev->halted[1],(int)desc->usb_dev->halted[0],
- (int)desc->usb_dev->toggle[1],(int)desc->usb_dev->toggle[0]
- );
- MTS_DEBUG("ep_out=%x ep_response=%x ep_image=%xn",
- 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(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 commandn");
- goto out;
- break;
- }
- MTS_DEBUG( "Command %s (%d bytes)n", what, srb->cmd_len);
- out:
- MTS_DEBUG( " %02x %02x %02x %02x %02x %02x %02x %02x %02x %02xn",
- srb->cmnd[0], srb->cmnd[1], srb->cmnd[2], srb->cmnd[3], srb->cmnd[4], srb->cmnd[5],
- srb->cmnd[6], srb->cmnd[7], srb->cmnd[8], srb->cmnd[9]);
- }
- #else
- static inline void mts_show_command(Scsi_Cmnd * dummy)
- {
- }
- static inline void mts_debug_dump(struct mts_desc* dummy)
- {
- }
- #endif
- /* static inline int mts_is_aborting(struct mts_desc* desc) {
- return (atomic_read(&desc->context.do_abort));
- } */
- static inline void mts_urb_abort(struct mts_desc* desc) {
- spin_unlock_irq(&io_request_lock);
- MTS_DEBUG_GOT_HERE();
- mts_debug_dump(desc);
- usb_unlink_urb( &desc->urb );
- spin_lock_irq(&io_request_lock);
- }
- static struct mts_desc * mts_list; /* list of active scanners */
- struct semaphore mts_list_semaphore;
- /* Internal list operations */
- static
- void mts_remove_nolock( struct mts_desc* to_remove )
- {
- MTS_DEBUG( "removing 0x%x from listn",
- (int)to_remove );
- lock_kernel();
- mts_urb_abort(to_remove);
- MTS_DEBUG_GOT_HERE();
- if ( to_remove != mts_list ) {
- MTS_DEBUG_GOT_HERE();
- if (to_remove->prev && to_remove->next)
- to_remove->prev->next = to_remove->next;
- } else {
- MTS_DEBUG_GOT_HERE();
- mts_list = to_remove->next;
- if (mts_list) {
- MTS_DEBUG_GOT_HERE();
- mts_list->prev = 0;
- }
- }
- if ( to_remove->next ) {
- MTS_DEBUG_GOT_HERE();
- to_remove->next->prev = to_remove->prev;
- }
- MTS_DEBUG_GOT_HERE();
- scsi_unregister_module(MODULE_SCSI_HA, &(to_remove->ctempl));
- unlock_kernel();
- kfree( to_remove );
- }
- static
- void mts_add_nolock( struct mts_desc* to_add )
- {
- MTS_DEBUG( "adding 0x%x to listn", (int)to_add );
- to_add->prev = 0;
- to_add->next = mts_list;
- if ( mts_list ) {
- mts_list->prev = to_add;
- }
- mts_list = to_add;
- }
- /* SCSI driver interface */
- /* scsi related functions - dummies for now mostly */
- static int mts_scsi_release(struct Scsi_Host *psh)
- {
- MTS_DEBUG_GOT_HERE();
- return 0;
- }
- static int mts_scsi_abort (Scsi_Cmnd *srb)
- {
- struct mts_desc* desc = (struct mts_desc*)(srb->host->hostdata[0]);
- MTS_DEBUG_GOT_HERE();
- mts_urb_abort(desc);
- return SCSI_ABORT_PENDING;
- }
- static int mts_scsi_host_reset (Scsi_Cmnd *srb)
- {
- struct mts_desc* desc = (struct mts_desc*)(srb->host->hostdata[0]);
- spin_unlock_irq(&io_request_lock);
- MTS_DEBUG_GOT_HERE();
- mts_debug_dump(desc);
- usb_reset_device(desc->usb_dev); /*FIXME: untested on new reset code */
- spin_lock_irq(&io_request_lock);
- return 0; /* RANT why here 0 and not SUCCESS */
- }
- /* the core of the scsi part */
- /* faking a detection - which can't fail :-) */
- static int mts_scsi_detect (struct SHT * sht)
- {
- /* Whole function stolen from usb-storage */
- struct mts_desc * desc = (struct mts_desc *)sht->proc_dir;
- /* What a hideous hack! */
- char local_name[48];
- spin_unlock_irq(&io_request_lock);
- MTS_DEBUG_GOT_HERE();
- /* set up the name of our subdirectory under /proc/scsi/ */
- sprintf(local_name, "microtek-%d", desc->host_number);
- sht->proc_name = kmalloc (strlen(local_name) + 1, GFP_KERNEL);
- /* FIXME: where is this freed ? */
- if (!sht->proc_name) {
- MTS_ERROR( "unable to allocate memory for proc interface!!n" );
- spin_lock_irq(&io_request_lock);
- return 0;
- }
- strcpy(sht->proc_name, local_name);
- sht->proc_dir = NULL;
- /* In host->hostdata we store a pointer to desc */
- desc->host = scsi_register(sht, sizeof(desc));
- if (desc->host == NULL) {
- MTS_ERROR("Cannot register due to low memory");
- kfree(sht->proc_name);
- spin_lock_irq(&io_request_lock);
- return 0;
- }
- desc->host->hostdata[0] = (unsigned long)desc;
- /* FIXME: what if sizeof(void*) != sizeof(unsigned long)? */
- spin_lock_irq(&io_request_lock);
- return 1;
- }
- /* Main entrypoint: SCSI commands are dispatched to here */
- static
- int mts_scsi_queuecommand (Scsi_Cmnd *srb, mts_scsi_cmnd_callback callback );
- static void mts_transfer_cleanup( struct urb *transfer );
- static void mts_do_sg(struct urb * transfer);
- inline static
- void mts_int_submit_urb (struct urb* transfer,
- int pipe,
- void* data,
- unsigned length,
- mts_usb_urb_callback callback )
- /* Interrupt context! */
- /* Holding transfer->context->lock! */
- {
- int res;
- MTS_INT_INIT();
- FILL_BULK_URB(transfer,
- context->instance->usb_dev,
- pipe,
- data,
- length,
- callback,
- context
- );
- transfer->status = 0;
- res = usb_submit_urb( transfer );
- if ( res ) {
- MTS_INT_ERROR( "could not submit URB! Error was %dn",(int)res );
- context->srb->result = DID_ERROR << 16;
- mts_transfer_cleanup(transfer);
- }
- return;
- }
- static void mts_transfer_cleanup( struct urb *transfer )
- /* Interrupt context! */
- {
- MTS_INT_INIT();
- if ( context->final_callback )
- 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->status<<1;
- mts_transfer_cleanup(transfer);
- return;
- }
- 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->status,
- 1,
- mts_transfer_done );
- }
- static void mts_data_done( struct urb* transfer )
- /* Interrupt context! */
- {
- MTS_INT_INIT();
- if ( context->data_length != transfer->actual_length ) {
- context->srb->resid = context->data_length - transfer->actual_length;
- } else if ( transfer->status ) {
- context->srb->result = (transfer->status == -ENOENT ? DID_ABORT : DID_ERROR)<<16;
- }
- mts_get_status(transfer);
- return;
- }
- static void mts_command_done( struct urb *transfer )
- /* Interrupt context! */
- {
- MTS_INT_INIT();
- if ( transfer->status ) {
- if (transfer->status == -ENOENT) {
- /* We are being killed */
- MTS_DEBUG_GOT_HERE();
- context->srb->result = DID_ABORT<<16;
- } else {
- /* A genuine error has occured */
- MTS_DEBUG_GOT_HERE();
- context->srb->result = DID_ERROR<<16;
- }
- mts_transfer_cleanup(transfer);
- return;
- }
- if ( context->data ) {
- mts_int_submit_urb(transfer,
- context->data_pipe,
- context->data,
- context->data_length,
- context->srb->use_sg ? mts_do_sg : mts_data_done);
- } else mts_get_status(transfer);
- return;
- }
- static void mts_do_sg (struct urb* transfer)
- {
- struct scatterlist * sg;
- MTS_INT_INIT();
-
- MTS_DEBUG("Processing fragment %d of %dn", context->fragment,context->srb->use_sg);
- if (transfer->status) {
- context->srb->result = (transfer->status == -ENOENT ? DID_ABORT : DID_ERROR)<<16;
- mts_transfer_cleanup(transfer);
- }
- sg = context->srb->buffer;
- context->fragment++;
- mts_int_submit_urb(transfer,
- context->data_pipe,
- sg[context->fragment].address,
- sg[context->fragment].length,
- context->fragment + 1 == context->srb->use_sg ? mts_data_done : mts_do_sg);
- return;
- }
- 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 void
- mts_build_transfer_context( Scsi_Cmnd *srb, struct mts_desc* desc )
- {
- int pipe;
- struct scatterlist * sg;
-
- MTS_DEBUG_GOT_HERE();
- desc->context.instance = desc;
- desc->context.srb = srb;
- desc->context.fragment = 0;
- if (!srb->use_sg) {
- if ( !srb->bufflen ){
- desc->context.data = 0;
- desc->context.data_length = 0;
- return;
- } else {
- desc->context.data = srb->buffer;
- desc->context.data_length = srb->bufflen;
- MTS_DEBUG("length = %d or %dn",
- srb->request_bufflen, srb->bufflen);
- }
- } else {
- MTS_DEBUG("Using scatter/gathern");
- sg = srb->buffer;
- desc->context.data = sg[0].address;
- desc->context.data_length = sg[0].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( "transfering from desc->ep_image == %dn",
- (int)desc->ep_image );
- } else if ( MTS_DIRECTION_IS_IN(srb->cmnd[0]) ) {
- pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_response);
- MTS_DEBUG( "transfering from desc->ep_response == %dn",
- (int)desc->ep_response);
- } else {
- MTS_DEBUG("transfering to desc->ep_out == %dn",
- (int)desc->ep_out);
- pipe = usb_sndbulkpipe(desc->usb_dev,desc->ep_out);
- }
- desc->context.data_pipe = pipe;
- }
- static
- int mts_scsi_queuecommand( Scsi_Cmnd *srb, mts_scsi_cmnd_callback callback )
- {
- struct mts_desc* desc = (struct mts_desc*)(srb->host->hostdata[0]);
- int err = 0;
- int res;
- MTS_DEBUG_GOT_HERE();
- 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 layern",(int)srb->device->lun,(int)srb->device->id, (int)srb->device->channel );
- MTS_DEBUG("this device doesn't existn");
- srb->result = DID_BAD_TARGET << 16;
- if(callback)
- callback(srb);
- goto out;
- }
-
- 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;
-
- res=usb_submit_urb(&desc->urb);
- if(res){
- MTS_ERROR("error %d submitting URBn",(int)res);
- srb->result = DID_ERROR << 16;
- if(callback)
- callback(srb);
- }
- out:
- return err;
- }
- /*
- * this defines our 'host'
- */
- /* NOTE: This is taken from usb-storage, should be right. */
- static Scsi_Host_Template mts_scsi_host_template = {
- name: "microtekX6",
- detect: mts_scsi_detect,
- release: mts_scsi_release,
- 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,
- cmd_per_lun: 1,
- present: 0,
- unchecked_isa_dma: FALSE,
- use_clustering: TRUE,
- use_new_eh_code: TRUE,
- emulated: TRUE
- };
- /* USB layer driver interface implementation */
- static void mts_usb_disconnect (struct usb_device *dev, void *ptr)
- {
- struct mts_desc* to_remove = (struct mts_desc*)ptr;
- MTS_DEBUG_GOT_HERE();
- /* leave the list - lock it */
- down(&mts_list_semaphore);
- mts_remove_nolock(to_remove);
- up(&mts_list_semaphore);
- }
- struct vendor_product
- {
- char* name;
- enum
- {
- mts_sup_unknown=0,
- mts_sup_alpha,
- mts_sup_full
- }
- support_status;
- } ;
- /* These are taken from the msmUSB.inf file on the Windows driver CD */
- const static struct vendor_product mts_supported_products[] =
- {
- { "Phantom 336CX", mts_sup_unknown},
- { "Phantom 336CX", mts_sup_unknown},
- { "Scanmaker X6", mts_sup_alpha},
- { "Phantom C6", mts_sup_unknown},
- { "Phantom 336CX", mts_sup_unknown},
- { "ScanMaker V6USL", mts_sup_unknown},
- { "ScanMaker V6USL", mts_sup_unknown},
- { "Scanmaker V6UL", mts_sup_unknown},
- { "Scanmaker V6UPL", mts_sup_alpha},
- };
- /* The entries of microtek_table must correspond, line-by-line to
- the entries of mts_supported_products[]. */
- static 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 void * mts_usb_probe (struct usb_device *dev, unsigned int interface,
- const struct usb_device_id *id)
- {
- int i;
- int result;
- 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;
- struct mts_desc * new_desc;
- struct vendor_product const* p;
- /* the altsettting 0 on the interface we're probing */
- struct usb_interface_descriptor *altsetting;
- MTS_DEBUG_GOT_HERE();
- MTS_DEBUG( "usb-device descriptor at %xn", (int)dev );
- MTS_DEBUG( "product id = 0x%x, vendor id = 0x%xn",
- (int)dev->descriptor.idProduct,
- (int)dev->descriptor.idVendor );
- MTS_DEBUG_GOT_HERE();
- p = &mts_supported_products[id - mts_usb_ids];
- MTS_DEBUG_GOT_HERE();
- MTS_DEBUG( "found model %sn", p->name );
- if ( p->support_status != mts_sup_full )
- MTS_MESSAGE( "model %s is not known to be fully supported, reports welcome!n",
- p->name );
- /* the altsettting 0 on the interface we're probing */
- altsetting =
- &(dev->actconfig->interface[interface].altsetting[0]);
- /* Check if the config is sane */
- if ( altsetting->bNumEndpoints != MTS_EP_TOTAL ) {
- MTS_WARNING( "expecting %d got %d endpoints! Bailing out.n",
- (int)MTS_EP_TOTAL, (int)altsetting->bNumEndpoints );
- return NULL;
- }
- for( i = 0; i < altsetting->bNumEndpoints; i++ ) {
- if ((altsetting->endpoint[i].bmAttributes &
- USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
- MTS_WARNING( "can only deal with bulk endpoints; endpoint %d is not bulk.n",
- (int)altsetting->endpoint[i].bEndpointAddress );
- } else {
- if (altsetting->endpoint[i].bEndpointAddress &
- USB_DIR_IN)
- *ep_in_current++
- = altsetting->endpoint[i].bEndpointAddress &
- USB_ENDPOINT_NUMBER_MASK;
- else {
- if ( ep_out != -1 ) {
- MTS_WARNING( "can only deal with one output endpoints. Bailing out." );
- return NULL;
- }
- ep_out = altsetting->endpoint[i].bEndpointAddress &
- USB_ENDPOINT_NUMBER_MASK;
- }
- }
- }
- if ( ep_out == -1 ) {
- MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.n" );
- return NULL;
- }
- /* I don't understand the following fully (it's from usb-storage) -- John */
- /* set the interface -- STALL is an acceptable response here */
- result = usb_set_interface(dev, altsetting->bInterfaceNumber, 0);
- MTS_DEBUG("usb_set_interface returned %d.n",result);
- switch( result )
- {
- case 0: /* no error */
- break;
-
- case -EPIPE:
- usb_clear_halt(dev, usb_sndctrlpipe(dev, 0));
- MTS_DEBUG( "clearing clearing stall on control interfacen" );
- break;
-
- default:
- MTS_DEBUG( "unknown error %d from usb_set_interfacen",
- (int)result );
- return NULL;
- }
-
-
- /* allocating a new descriptor */
- new_desc = (struct mts_desc *)kmalloc(sizeof(struct mts_desc), GFP_KERNEL);
- if (new_desc == NULL)
- {
- MTS_ERROR("couldn't allocate scanner desc, bailing out!n");
- return NULL;
- }
- /* As done by usb_alloc_urb */
- memset( new_desc, 0, sizeof(*new_desc) );
- spin_lock_init(&new_desc->urb.lock);
-
-
- /* initialising that descriptor */
- new_desc->usb_dev = dev;
- new_desc->interface = interface;
- init_MUTEX(&new_desc->lock);
- if(mts_list){
- new_desc->host_number = mts_list->host_number+1;
- } else {
- new_desc->host_number = 0;
- }
-
- /* 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 )
- MTS_WARNING( "will this work? Command EP is not usually %dn",
- (int)new_desc->ep_out );
- if ( new_desc->ep_response != MTS_EP_RESPONSE )
- MTS_WARNING( "will this work? Response EP is not usually %dn",
- (int)new_desc->ep_response );
- if ( new_desc->ep_image != MTS_EP_IMAGE )
- MTS_WARNING( "will this work? Image data EP is not usually %dn",
- (int)new_desc->ep_image );
- /* Initialize the host template based on the default one */
- memcpy(&(new_desc->ctempl), &mts_scsi_host_template, sizeof(mts_scsi_host_template));
- /* HACK from usb-storage - this is needed for scsi detection */
- (struct mts_desc *)new_desc->ctempl.proc_dir = new_desc; /* FIXME */
- MTS_DEBUG("registering SCSI modulen");
- new_desc->ctempl.module = THIS_MODULE;
- result = scsi_register_module(MODULE_SCSI_HA, &(new_desc->ctempl));
- /* Will get hit back in microtek_detect by this func */
- if ( result )
- {
- MTS_ERROR( "error %d from scsi_register_module! Help!n",
- (int)result );
- /* FIXME: need more cleanup? */
- kfree( new_desc );
- return NULL;
- }
- MTS_DEBUG_GOT_HERE();
- /* FIXME: the bomb is armed, must the host be registered under lock ? */
- /* join the list - lock it */
- down(&mts_list_semaphore);
- mts_add_nolock( new_desc );
- up(&mts_list_semaphore);
- MTS_DEBUG("completed probe and exiting happilyn");
- return (void *)new_desc;
- }
- /* get us noticed by the rest of the kernel */
- int __init microtek_drv_init(void)
- {
- int result;
- MTS_DEBUG_GOT_HERE();
- init_MUTEX(&mts_list_semaphore);
- if ((result = usb_register(&mts_usb_driver)) < 0) {
- MTS_DEBUG("usb_register returned %dn", result );
- return -1;
- } else {
- MTS_DEBUG("driver registered.n");
- }
- info(DRIVER_VERSION ":" DRIVER_DESC);
- return 0;
- }
- void __exit microtek_drv_exit(void)
- {
- struct mts_desc* next;
- MTS_DEBUG_GOT_HERE();
- usb_deregister(&mts_usb_driver);
- down(&mts_list_semaphore);
- while (mts_list) {
- /* keep track of where the next one is */
- next = mts_list->next;
- mts_remove_nolock( mts_list );
- /* advance the list pointer */
- mts_list = next;
- }
- up(&mts_list_semaphore);
- }
- module_init(microtek_drv_init);
- module_exit(microtek_drv_exit);
- MODULE_AUTHOR( DRIVER_AUTHOR );
- MODULE_DESCRIPTION( DRIVER_DESC );
- MODULE_LICENSE("GPL");