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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/usb/image/microtek.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/usb/image/microtek.c')
-rw-r--r--drivers/usb/image/microtek.c862
1 files changed, 862 insertions, 0 deletions
diff --git a/drivers/usb/image/microtek.c b/drivers/usb/image/microtek.c
new file mode 100644
index 00000000000..de0d32f6618
--- /dev/null
+++ b/drivers/usb/image/microtek.c
@@ -0,0 +1,862 @@
+/* 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
+ */
+
+#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/blkdev.h>
+#include "../../scsi/scsi.h"
+#include <scsi/scsi_host.h>
+
+#include "microtek.h"
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v0.4.3"
+#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 struct usb_device_id mts_usb_ids [];
+
+static struct usb_driver mts_usb_driver = {
+ .owner = THIS_MODULE,
+ .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%x\n",(int)transfer,(int)context ); \
+ MTS_DEBUG("status = 0x%x data-length = 0x%x sent = 0x%x\n",(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: 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(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( " %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
+ 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 void mts_urb_abort(struct mts_desc* desc) {
+ MTS_DEBUG_GOT_HERE();
+ mts_debug_dump(desc);
+
+ usb_kill_urb( desc->urb );
+}
+
+static int mts_scsi_abort (Scsi_Cmnd *srb)
+{
+ struct mts_desc* desc = (struct mts_desc*)(srb->device->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->device->host->hostdata[0]);
+ int result, rc;
+
+ MTS_DEBUG_GOT_HERE();
+ mts_debug_dump(desc);
+
+ rc = usb_lock_device_for_reset(desc->usb_dev, desc->usb_intf);
+ if (rc < 0)
+ return FAILED;
+ result = usb_reset_device(desc->usb_dev);;
+ if (rc)
+ usb_unlock_device(desc->usb_dev);
+ return result ? FAILED : SUCCESS;
+}
+
+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, struct pt_regs *regs);
+
+
+inline static
+void 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
+ );
+
+ transfer->status = 0;
+
+ res = usb_submit_urb( transfer, GFP_ATOMIC );
+ if ( unlikely(res) ) {
+ MTS_INT_ERROR( "could not submit URB! Error was %d\n",(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 ( likely(context->final_callback != NULL) )
+ context->final_callback(context->srb);
+
+}
+
+static void mts_transfer_done( struct urb *transfer, struct pt_regs *regs )
+{
+ 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, struct pt_regs *regs )
+/* Interrupt context! */
+{
+ MTS_INT_INIT();
+
+ if ( context->data_length != transfer->actual_length ) {
+ context->srb->resid = context->data_length - transfer->actual_length;
+ } else if ( unlikely(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, struct pt_regs *regs )
+/* Interrupt context! */
+{
+ MTS_INT_INIT();
+
+ if ( unlikely(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 occurred */
+ MTS_DEBUG_GOT_HERE();
+
+ context->srb->result = DID_ERROR<<16;
+ }
+ 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,
+ 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 pt_regs *regs)
+{
+ struct scatterlist * sg;
+ MTS_INT_INIT();
+
+ MTS_DEBUG("Processing fragment %d of %d\n", context->fragment,context->srb->use_sg);
+
+ if (unlikely(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,
+ page_address(sg[context->fragment].page) +
+ sg[context->fragment].offset,
+ 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 = NULL;
+ desc->context.data_length = 0;
+ return;
+ } else {
+ desc->context.data = srb->buffer;
+ desc->context.data_length = srb->bufflen;
+ MTS_DEBUG("length = %d or %d\n",
+ srb->request_bufflen, srb->bufflen);
+ }
+ } else {
+ MTS_DEBUG("Using scatter/gather\n");
+ sg = srb->buffer;
+ desc->context.data = page_address(sg[0].page) + sg[0].offset;
+ 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 == %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( "transfering from desc->ep_response == %d\n",
+ (int)desc->ep_response);
+ } else {
+ MTS_DEBUG("transfering 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
+int mts_scsi_queuecommand( Scsi_Cmnd *srb, mts_scsi_cmnd_callback callback )
+{
+ struct mts_desc* desc = (struct mts_desc*)(srb->device->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 layer\n",(int)srb->device->lun,(int)srb->device->id, (int)srb->device->channel );
+
+ MTS_DEBUG("this device doesn't exist\n");
+
+ srb->result = DID_BAD_TARGET << 16;
+
+ 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)){
+ MTS_ERROR("error %d submitting URB\n",(int)res);
+ srb->result = DID_ERROR << 16;
+
+ if(likely(callback != NULL))
+ callback(srb);
+
+ }
+
+out:
+ return err;
+}
+
+static 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,
+ .cmd_per_lun = 1,
+ .use_clustering = 1,
+ .emulated = 1,
+};
+
+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 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 vendor_product const* p;
+ struct usb_device *dev = interface_to_usbdev (intf);
+
+ /* the current altsetting on the interface we're probing */
+ struct usb_host_interface *altsetting;
+
+ MTS_DEBUG_GOT_HERE();
+ 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) );
+
+ MTS_DEBUG_GOT_HERE();
+
+ p = &mts_supported_products[id - mts_usb_ids];
+
+ MTS_DEBUG_GOT_HERE();
+
+ MTS_DEBUG( "found model %s\n", 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 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 ) {
+ MTS_WARNING( "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 ((altsetting->endpoint[i].desc.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].desc.bEndpointAddress );
+ } else {
+ if (altsetting->endpoint[i].desc.bEndpointAddress &
+ USB_DIR_IN)
+ *ep_in_current++
+ = altsetting->endpoint[i].desc.bEndpointAddress &
+ USB_ENDPOINT_NUMBER_MASK;
+ else {
+ if ( ep_out != -1 ) {
+ MTS_WARNING( "can only deal with one output endpoints. Bailing out." );
+ return -ENODEV;
+ }
+
+ ep_out = altsetting->endpoint[i].desc.bEndpointAddress &
+ USB_ENDPOINT_NUMBER_MASK;
+ }
+ }
+
+ }
+
+
+ if ( ep_out == -1 ) {
+ MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.\n" );
+ return -ENODEV;
+ }
+
+
+ new_desc = kmalloc(sizeof(struct mts_desc), GFP_KERNEL);
+ if (!new_desc)
+ goto out;
+
+ memset(new_desc, 0, sizeof(*new_desc));
+ new_desc->urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!new_desc->urb)
+ goto out_kfree;
+
+ new_desc->usb_dev = dev;
+ new_desc->usb_intf = intf;
+ init_MUTEX(&new_desc->lock);
+
+ /* 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 %d\n",
+ (int)new_desc->ep_out );
+
+ if ( new_desc->ep_response != MTS_EP_RESPONSE )
+ MTS_WARNING( "will this work? Response EP is not usually %d\n",
+ (int)new_desc->ep_response );
+
+ if ( new_desc->ep_image != MTS_EP_IMAGE )
+ MTS_WARNING( "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_free_urb;
+
+ new_desc->host->hostdata[0] = (unsigned long)new_desc;
+ if (scsi_add_host(new_desc->host, NULL)) {
+ err_retval = -EIO;
+ goto out_free_urb;
+ }
+ scsi_scan_host(new_desc->host);
+
+ usb_set_intfdata(intf, new_desc);
+ return 0;
+
+ 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);
+}
+
+
+static int __init microtek_drv_init(void)
+{
+ return usb_register(&mts_usb_driver);
+}
+
+static void __exit microtek_drv_exit(void)
+{
+ usb_deregister(&mts_usb_driver);
+}
+
+module_init(microtek_drv_init);
+module_exit(microtek_drv_exit);
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE("GPL");
+
+