// SPDX-License-Identifier: GPL-2.0+
|
/*
|
* Driver for Datafab USB Compact Flash reader
|
*
|
* datafab driver v0.1:
|
*
|
* First release
|
*
|
* Current development and maintenance by:
|
* (c) 2000 Jimmie Mayfield (mayfield+datafab@sackheads.org)
|
*
|
* Many thanks to Robert Baruch for the SanDisk SmartMedia reader driver
|
* which I used as a template for this driver.
|
*
|
* Some bugfixes and scatter-gather code by Gregory P. Smith
|
* (greg-usb@electricrain.com)
|
*
|
* Fix for media change by Joerg Schneider (js@joergschneider.com)
|
*
|
* Other contributors:
|
* (c) 2002 Alan Stern <stern@rowland.org>
|
*/
|
|
/*
|
* This driver attempts to support USB CompactFlash reader/writer devices
|
* based on Datafab USB-to-ATA chips. It was specifically developed for the
|
* Datafab MDCFE-B USB CompactFlash reader but has since been found to work
|
* with a variety of Datafab-based devices from a number of manufacturers.
|
* I've received a report of this driver working with a Datafab-based
|
* SmartMedia device though please be aware that I'm personally unable to
|
* test SmartMedia support.
|
*
|
* This driver supports reading and writing. If you're truly paranoid,
|
* however, you can force the driver into a write-protected state by setting
|
* the WP enable bits in datafab_handle_mode_sense(). See the comments
|
* in that routine.
|
*/
|
|
#include <linux/errno.h>
|
#include <linux/module.h>
|
#include <linux/slab.h>
|
|
#include <scsi/scsi.h>
|
#include <scsi/scsi_cmnd.h>
|
|
#include "usb.h"
|
#include "transport.h"
|
#include "protocol.h"
|
#include "debug.h"
|
#include "scsiglue.h"
|
|
#define DRV_NAME "ums-datafab"
|
|
MODULE_DESCRIPTION("Driver for Datafab USB Compact Flash reader");
|
MODULE_AUTHOR("Jimmie Mayfield <mayfield+datafab@sackheads.org>");
|
MODULE_LICENSE("GPL");
|
MODULE_IMPORT_NS(USB_STORAGE);
|
|
struct datafab_info {
|
unsigned long sectors; /* total sector count */
|
unsigned long ssize; /* sector size in bytes */
|
signed char lun; /* used for dual-slot readers */
|
|
/* the following aren't used yet */
|
unsigned char sense_key;
|
unsigned long sense_asc; /* additional sense code */
|
unsigned long sense_ascq; /* additional sense code qualifier */
|
};
|
|
static int datafab_determine_lun(struct us_data *us,
|
struct datafab_info *info);
|
|
|
/*
|
* The table of devices
|
*/
|
#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
|
vendorName, productName, useProtocol, useTransport, \
|
initFunction, flags) \
|
{ USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
|
.driver_info = (flags) }
|
|
static struct usb_device_id datafab_usb_ids[] = {
|
# include "unusual_datafab.h"
|
{ } /* Terminating entry */
|
};
|
MODULE_DEVICE_TABLE(usb, datafab_usb_ids);
|
|
#undef UNUSUAL_DEV
|
|
/*
|
* The flags table
|
*/
|
#define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
|
vendor_name, product_name, use_protocol, use_transport, \
|
init_function, Flags) \
|
{ \
|
.vendorName = vendor_name, \
|
.productName = product_name, \
|
.useProtocol = use_protocol, \
|
.useTransport = use_transport, \
|
.initFunction = init_function, \
|
}
|
|
static struct us_unusual_dev datafab_unusual_dev_list[] = {
|
# include "unusual_datafab.h"
|
{ } /* Terminating entry */
|
};
|
|
#undef UNUSUAL_DEV
|
|
|
static inline int
|
datafab_bulk_read(struct us_data *us, unsigned char *data, unsigned int len) {
|
if (len == 0)
|
return USB_STOR_XFER_GOOD;
|
|
usb_stor_dbg(us, "len = %d\n", len);
|
return usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
|
data, len, NULL);
|
}
|
|
|
static inline int
|
datafab_bulk_write(struct us_data *us, unsigned char *data, unsigned int len) {
|
if (len == 0)
|
return USB_STOR_XFER_GOOD;
|
|
usb_stor_dbg(us, "len = %d\n", len);
|
return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
|
data, len, NULL);
|
}
|
|
|
static int datafab_read_data(struct us_data *us,
|
struct datafab_info *info,
|
u32 sector,
|
u32 sectors)
|
{
|
unsigned char *command = us->iobuf;
|
unsigned char *buffer;
|
unsigned char thistime;
|
unsigned int totallen, alloclen;
|
int len, result;
|
unsigned int sg_offset = 0;
|
struct scatterlist *sg = NULL;
|
|
// we're working in LBA mode. according to the ATA spec,
|
// we can support up to 28-bit addressing. I don't know if Datafab
|
// supports beyond 24-bit addressing. It's kind of hard to test
|
// since it requires > 8GB CF card.
|
//
|
if (sectors > 0x0FFFFFFF)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (info->lun == -1) {
|
result = datafab_determine_lun(us, info);
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
return result;
|
}
|
|
totallen = sectors * info->ssize;
|
|
// Since we don't read more than 64 KB at a time, we have to create
|
// a bounce buffer and move the data a piece at a time between the
|
// bounce buffer and the actual transfer buffer.
|
|
alloclen = min(totallen, 65536u);
|
buffer = kmalloc(alloclen, GFP_NOIO);
|
if (buffer == NULL)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
do {
|
// loop, never allocate or transfer more than 64k at once
|
// (min(128k, 255*info->ssize) is the real limit)
|
|
len = min(totallen, alloclen);
|
thistime = (len / info->ssize) & 0xff;
|
|
command[0] = 0;
|
command[1] = thistime;
|
command[2] = sector & 0xFF;
|
command[3] = (sector >> 8) & 0xFF;
|
command[4] = (sector >> 16) & 0xFF;
|
|
command[5] = 0xE0 + (info->lun << 4);
|
command[5] |= (sector >> 24) & 0x0F;
|
command[6] = 0x20;
|
command[7] = 0x01;
|
|
// send the read command
|
result = datafab_bulk_write(us, command, 8);
|
if (result != USB_STOR_XFER_GOOD)
|
goto leave;
|
|
// read the result
|
result = datafab_bulk_read(us, buffer, len);
|
if (result != USB_STOR_XFER_GOOD)
|
goto leave;
|
|
// Store the data in the transfer buffer
|
usb_stor_access_xfer_buf(buffer, len, us->srb,
|
&sg, &sg_offset, TO_XFER_BUF);
|
|
sector += thistime;
|
totallen -= len;
|
} while (totallen > 0);
|
|
kfree(buffer);
|
return USB_STOR_TRANSPORT_GOOD;
|
|
leave:
|
kfree(buffer);
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
|
static int datafab_write_data(struct us_data *us,
|
struct datafab_info *info,
|
u32 sector,
|
u32 sectors)
|
{
|
unsigned char *command = us->iobuf;
|
unsigned char *reply = us->iobuf;
|
unsigned char *buffer;
|
unsigned char thistime;
|
unsigned int totallen, alloclen;
|
int len, result;
|
unsigned int sg_offset = 0;
|
struct scatterlist *sg = NULL;
|
|
// we're working in LBA mode. according to the ATA spec,
|
// we can support up to 28-bit addressing. I don't know if Datafab
|
// supports beyond 24-bit addressing. It's kind of hard to test
|
// since it requires > 8GB CF card.
|
//
|
if (sectors > 0x0FFFFFFF)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (info->lun == -1) {
|
result = datafab_determine_lun(us, info);
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
return result;
|
}
|
|
totallen = sectors * info->ssize;
|
|
// Since we don't write more than 64 KB at a time, we have to create
|
// a bounce buffer and move the data a piece at a time between the
|
// bounce buffer and the actual transfer buffer.
|
|
alloclen = min(totallen, 65536u);
|
buffer = kmalloc(alloclen, GFP_NOIO);
|
if (buffer == NULL)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
do {
|
// loop, never allocate or transfer more than 64k at once
|
// (min(128k, 255*info->ssize) is the real limit)
|
|
len = min(totallen, alloclen);
|
thistime = (len / info->ssize) & 0xff;
|
|
// Get the data from the transfer buffer
|
usb_stor_access_xfer_buf(buffer, len, us->srb,
|
&sg, &sg_offset, FROM_XFER_BUF);
|
|
command[0] = 0;
|
command[1] = thistime;
|
command[2] = sector & 0xFF;
|
command[3] = (sector >> 8) & 0xFF;
|
command[4] = (sector >> 16) & 0xFF;
|
|
command[5] = 0xE0 + (info->lun << 4);
|
command[5] |= (sector >> 24) & 0x0F;
|
command[6] = 0x30;
|
command[7] = 0x02;
|
|
// send the command
|
result = datafab_bulk_write(us, command, 8);
|
if (result != USB_STOR_XFER_GOOD)
|
goto leave;
|
|
// send the data
|
result = datafab_bulk_write(us, buffer, len);
|
if (result != USB_STOR_XFER_GOOD)
|
goto leave;
|
|
// read the result
|
result = datafab_bulk_read(us, reply, 2);
|
if (result != USB_STOR_XFER_GOOD)
|
goto leave;
|
|
if (reply[0] != 0x50 && reply[1] != 0) {
|
usb_stor_dbg(us, "Gah! write return code: %02x %02x\n",
|
reply[0], reply[1]);
|
result = USB_STOR_TRANSPORT_ERROR;
|
goto leave;
|
}
|
|
sector += thistime;
|
totallen -= len;
|
} while (totallen > 0);
|
|
kfree(buffer);
|
return USB_STOR_TRANSPORT_GOOD;
|
|
leave:
|
kfree(buffer);
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
|
static int datafab_determine_lun(struct us_data *us,
|
struct datafab_info *info)
|
{
|
// Dual-slot readers can be thought of as dual-LUN devices.
|
// We need to determine which card slot is being used.
|
// We'll send an IDENTIFY DEVICE command and see which LUN responds...
|
//
|
// There might be a better way of doing this?
|
|
static unsigned char scommand[8] = { 0, 1, 0, 0, 0, 0xa0, 0xec, 1 };
|
unsigned char *command = us->iobuf;
|
unsigned char *buf;
|
int count = 0, rc;
|
|
if (!info)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
memcpy(command, scommand, 8);
|
buf = kmalloc(512, GFP_NOIO);
|
if (!buf)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
usb_stor_dbg(us, "locating...\n");
|
|
// we'll try 3 times before giving up...
|
//
|
while (count++ < 3) {
|
command[5] = 0xa0;
|
|
rc = datafab_bulk_write(us, command, 8);
|
if (rc != USB_STOR_XFER_GOOD) {
|
rc = USB_STOR_TRANSPORT_ERROR;
|
goto leave;
|
}
|
|
rc = datafab_bulk_read(us, buf, 512);
|
if (rc == USB_STOR_XFER_GOOD) {
|
info->lun = 0;
|
rc = USB_STOR_TRANSPORT_GOOD;
|
goto leave;
|
}
|
|
command[5] = 0xb0;
|
|
rc = datafab_bulk_write(us, command, 8);
|
if (rc != USB_STOR_XFER_GOOD) {
|
rc = USB_STOR_TRANSPORT_ERROR;
|
goto leave;
|
}
|
|
rc = datafab_bulk_read(us, buf, 512);
|
if (rc == USB_STOR_XFER_GOOD) {
|
info->lun = 1;
|
rc = USB_STOR_TRANSPORT_GOOD;
|
goto leave;
|
}
|
|
msleep(20);
|
}
|
|
rc = USB_STOR_TRANSPORT_ERROR;
|
|
leave:
|
kfree(buf);
|
return rc;
|
}
|
|
static int datafab_id_device(struct us_data *us,
|
struct datafab_info *info)
|
{
|
// this is a variation of the ATA "IDENTIFY DEVICE" command...according
|
// to the ATA spec, 'Sector Count' isn't used but the Windows driver
|
// sets this bit so we do too...
|
//
|
static unsigned char scommand[8] = { 0, 1, 0, 0, 0, 0xa0, 0xec, 1 };
|
unsigned char *command = us->iobuf;
|
unsigned char *reply;
|
int rc;
|
|
if (!info)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
if (info->lun == -1) {
|
rc = datafab_determine_lun(us, info);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
}
|
|
memcpy(command, scommand, 8);
|
reply = kmalloc(512, GFP_NOIO);
|
if (!reply)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
command[5] += (info->lun << 4);
|
|
rc = datafab_bulk_write(us, command, 8);
|
if (rc != USB_STOR_XFER_GOOD) {
|
rc = USB_STOR_TRANSPORT_ERROR;
|
goto leave;
|
}
|
|
// we'll go ahead and extract the media capacity while we're here...
|
//
|
rc = datafab_bulk_read(us, reply, 512);
|
if (rc == USB_STOR_XFER_GOOD) {
|
// capacity is at word offset 57-58
|
//
|
info->sectors = ((u32)(reply[117]) << 24) |
|
((u32)(reply[116]) << 16) |
|
((u32)(reply[115]) << 8) |
|
((u32)(reply[114]) );
|
rc = USB_STOR_TRANSPORT_GOOD;
|
goto leave;
|
}
|
|
rc = USB_STOR_TRANSPORT_ERROR;
|
|
leave:
|
kfree(reply);
|
return rc;
|
}
|
|
|
static int datafab_handle_mode_sense(struct us_data *us,
|
struct scsi_cmnd * srb,
|
int sense_6)
|
{
|
static unsigned char rw_err_page[12] = {
|
0x1, 0xA, 0x21, 1, 0, 0, 0, 0, 1, 0, 0, 0
|
};
|
static unsigned char cache_page[12] = {
|
0x8, 0xA, 0x1, 0, 0, 0, 0, 0, 0, 0, 0, 0
|
};
|
static unsigned char rbac_page[12] = {
|
0x1B, 0xA, 0, 0x81, 0, 0, 0, 0, 0, 0, 0, 0
|
};
|
static unsigned char timer_page[8] = {
|
0x1C, 0x6, 0, 0, 0, 0
|
};
|
unsigned char pc, page_code;
|
unsigned int i = 0;
|
struct datafab_info *info = (struct datafab_info *) (us->extra);
|
unsigned char *ptr = us->iobuf;
|
|
// most of this stuff is just a hack to get things working. the
|
// datafab reader doesn't present a SCSI interface so we
|
// fudge the SCSI commands...
|
//
|
|
pc = srb->cmnd[2] >> 6;
|
page_code = srb->cmnd[2] & 0x3F;
|
|
switch (pc) {
|
case 0x0:
|
usb_stor_dbg(us, "Current values\n");
|
break;
|
case 0x1:
|
usb_stor_dbg(us, "Changeable values\n");
|
break;
|
case 0x2:
|
usb_stor_dbg(us, "Default values\n");
|
break;
|
case 0x3:
|
usb_stor_dbg(us, "Saves values\n");
|
break;
|
}
|
|
memset(ptr, 0, 8);
|
if (sense_6) {
|
ptr[2] = 0x00; // WP enable: 0x80
|
i = 4;
|
} else {
|
ptr[3] = 0x00; // WP enable: 0x80
|
i = 8;
|
}
|
|
switch (page_code) {
|
default:
|
// vendor-specific mode
|
info->sense_key = 0x05;
|
info->sense_asc = 0x24;
|
info->sense_ascq = 0x00;
|
return USB_STOR_TRANSPORT_FAILED;
|
|
case 0x1:
|
memcpy(ptr + i, rw_err_page, sizeof(rw_err_page));
|
i += sizeof(rw_err_page);
|
break;
|
|
case 0x8:
|
memcpy(ptr + i, cache_page, sizeof(cache_page));
|
i += sizeof(cache_page);
|
break;
|
|
case 0x1B:
|
memcpy(ptr + i, rbac_page, sizeof(rbac_page));
|
i += sizeof(rbac_page);
|
break;
|
|
case 0x1C:
|
memcpy(ptr + i, timer_page, sizeof(timer_page));
|
i += sizeof(timer_page);
|
break;
|
|
case 0x3F: // retrieve all pages
|
memcpy(ptr + i, timer_page, sizeof(timer_page));
|
i += sizeof(timer_page);
|
memcpy(ptr + i, rbac_page, sizeof(rbac_page));
|
i += sizeof(rbac_page);
|
memcpy(ptr + i, cache_page, sizeof(cache_page));
|
i += sizeof(cache_page);
|
memcpy(ptr + i, rw_err_page, sizeof(rw_err_page));
|
i += sizeof(rw_err_page);
|
break;
|
}
|
|
if (sense_6)
|
ptr[0] = i - 1;
|
else
|
((__be16 *) ptr)[0] = cpu_to_be16(i - 2);
|
usb_stor_set_xfer_buf(ptr, i, srb);
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
static void datafab_info_destructor(void *extra)
|
{
|
// this routine is a placeholder...
|
// currently, we don't allocate any extra memory so we're okay
|
}
|
|
|
// Transport for the Datafab MDCFE-B
|
//
|
static int datafab_transport(struct scsi_cmnd *srb, struct us_data *us)
|
{
|
struct datafab_info *info;
|
int rc;
|
unsigned long block, blocks;
|
unsigned char *ptr = us->iobuf;
|
static unsigned char inquiry_reply[8] = {
|
0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00
|
};
|
|
if (!us->extra) {
|
us->extra = kzalloc(sizeof(struct datafab_info), GFP_NOIO);
|
if (!us->extra)
|
return USB_STOR_TRANSPORT_ERROR;
|
|
us->extra_destructor = datafab_info_destructor;
|
((struct datafab_info *)us->extra)->lun = -1;
|
}
|
|
info = (struct datafab_info *) (us->extra);
|
|
if (srb->cmnd[0] == INQUIRY) {
|
usb_stor_dbg(us, "INQUIRY - Returning bogus response\n");
|
memcpy(ptr, inquiry_reply, sizeof(inquiry_reply));
|
fill_inquiry_response(us, ptr, 36);
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
if (srb->cmnd[0] == READ_CAPACITY) {
|
info->ssize = 0x200; // hard coded 512 byte sectors as per ATA spec
|
rc = datafab_id_device(us, info);
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
return rc;
|
|
usb_stor_dbg(us, "READ_CAPACITY: %ld sectors, %ld bytes per sector\n",
|
info->sectors, info->ssize);
|
|
// build the reply
|
// we need the last sector, not the number of sectors
|
((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1);
|
((__be32 *) ptr)[1] = cpu_to_be32(info->ssize);
|
usb_stor_set_xfer_buf(ptr, 8, srb);
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
if (srb->cmnd[0] == MODE_SELECT_10) {
|
usb_stor_dbg(us, "Gah! MODE_SELECT_10\n");
|
return USB_STOR_TRANSPORT_ERROR;
|
}
|
|
// don't bother implementing READ_6 or WRITE_6.
|
//
|
if (srb->cmnd[0] == READ_10) {
|
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
|
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
|
|
blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
|
|
usb_stor_dbg(us, "READ_10: read block 0x%04lx count %ld\n",
|
block, blocks);
|
return datafab_read_data(us, info, block, blocks);
|
}
|
|
if (srb->cmnd[0] == READ_12) {
|
// we'll probably never see a READ_12 but we'll do it anyway...
|
//
|
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
|
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
|
|
blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
|
((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9]));
|
|
usb_stor_dbg(us, "READ_12: read block 0x%04lx count %ld\n",
|
block, blocks);
|
return datafab_read_data(us, info, block, blocks);
|
}
|
|
if (srb->cmnd[0] == WRITE_10) {
|
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
|
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
|
|
blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
|
|
usb_stor_dbg(us, "WRITE_10: write block 0x%04lx count %ld\n",
|
block, blocks);
|
return datafab_write_data(us, info, block, blocks);
|
}
|
|
if (srb->cmnd[0] == WRITE_12) {
|
// we'll probably never see a WRITE_12 but we'll do it anyway...
|
//
|
block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
|
((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
|
|
blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
|
((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9]));
|
|
usb_stor_dbg(us, "WRITE_12: write block 0x%04lx count %ld\n",
|
block, blocks);
|
return datafab_write_data(us, info, block, blocks);
|
}
|
|
if (srb->cmnd[0] == TEST_UNIT_READY) {
|
usb_stor_dbg(us, "TEST_UNIT_READY\n");
|
return datafab_id_device(us, info);
|
}
|
|
if (srb->cmnd[0] == REQUEST_SENSE) {
|
usb_stor_dbg(us, "REQUEST_SENSE - Returning faked response\n");
|
|
// this response is pretty bogus right now. eventually if necessary
|
// we can set the correct sense data. so far though it hasn't been
|
// necessary
|
//
|
memset(ptr, 0, 18);
|
ptr[0] = 0xF0;
|
ptr[2] = info->sense_key;
|
ptr[7] = 11;
|
ptr[12] = info->sense_asc;
|
ptr[13] = info->sense_ascq;
|
usb_stor_set_xfer_buf(ptr, 18, srb);
|
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
if (srb->cmnd[0] == MODE_SENSE) {
|
usb_stor_dbg(us, "MODE_SENSE_6 detected\n");
|
return datafab_handle_mode_sense(us, srb, 1);
|
}
|
|
if (srb->cmnd[0] == MODE_SENSE_10) {
|
usb_stor_dbg(us, "MODE_SENSE_10 detected\n");
|
return datafab_handle_mode_sense(us, srb, 0);
|
}
|
|
if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
|
/*
|
* sure. whatever. not like we can stop the user from
|
* popping the media out of the device (no locking doors, etc)
|
*/
|
return USB_STOR_TRANSPORT_GOOD;
|
}
|
|
if (srb->cmnd[0] == START_STOP) {
|
/*
|
* this is used by sd.c'check_scsidisk_media_change to detect
|
* media change
|
*/
|
usb_stor_dbg(us, "START_STOP\n");
|
/*
|
* the first datafab_id_device after a media change returns
|
* an error (determined experimentally)
|
*/
|
rc = datafab_id_device(us, info);
|
if (rc == USB_STOR_TRANSPORT_GOOD) {
|
info->sense_key = NO_SENSE;
|
srb->result = SUCCESS;
|
} else {
|
info->sense_key = UNIT_ATTENTION;
|
srb->result = SAM_STAT_CHECK_CONDITION;
|
}
|
return rc;
|
}
|
|
usb_stor_dbg(us, "Gah! Unknown command: %d (0x%x)\n",
|
srb->cmnd[0], srb->cmnd[0]);
|
info->sense_key = 0x05;
|
info->sense_asc = 0x20;
|
info->sense_ascq = 0x00;
|
return USB_STOR_TRANSPORT_FAILED;
|
}
|
|
static struct scsi_host_template datafab_host_template;
|
|
static int datafab_probe(struct usb_interface *intf,
|
const struct usb_device_id *id)
|
{
|
struct us_data *us;
|
int result;
|
|
result = usb_stor_probe1(&us, intf, id,
|
(id - datafab_usb_ids) + datafab_unusual_dev_list,
|
&datafab_host_template);
|
if (result)
|
return result;
|
|
us->transport_name = "Datafab Bulk-Only";
|
us->transport = datafab_transport;
|
us->transport_reset = usb_stor_Bulk_reset;
|
us->max_lun = 1;
|
|
result = usb_stor_probe2(us);
|
return result;
|
}
|
|
static struct usb_driver datafab_driver = {
|
.name = DRV_NAME,
|
.probe = datafab_probe,
|
.disconnect = usb_stor_disconnect,
|
.suspend = usb_stor_suspend,
|
.resume = usb_stor_resume,
|
.reset_resume = usb_stor_reset_resume,
|
.pre_reset = usb_stor_pre_reset,
|
.post_reset = usb_stor_post_reset,
|
.id_table = datafab_usb_ids,
|
.soft_unbind = 1,
|
.no_dynamic_id = 1,
|
};
|
|
module_usb_stor_driver(datafab_driver, datafab_host_template, DRV_NAME);
|
