1da177e4c3
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!
596 lines
16 KiB
C
596 lines
16 KiB
C
/* Driver for Lexar "Jumpshot" Compact Flash reader
|
|
*
|
|
* $Id: jumpshot.c,v 1.7 2002/02/25 00:40:13 mdharm Exp $
|
|
*
|
|
* jumpshot driver v0.1:
|
|
*
|
|
* First release
|
|
*
|
|
* Current development and maintenance by:
|
|
* (c) 2000 Jimmie Mayfield (mayfield+usb@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)
|
|
*
|
|
* Developed with the assistance of:
|
|
*
|
|
* (C) 2002 Alan Stern <stern@rowland.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2, or (at your option) any
|
|
* later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
/*
|
|
* This driver attempts to support the Lexar Jumpshot USB CompactFlash
|
|
* reader. Like many other USB CompactFlash readers, the Jumpshot contains
|
|
* a USB-to-ATA chip.
|
|
*
|
|
* 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 jumpshot_handle_mode_sense. See the comments
|
|
* in that routine.
|
|
*/
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/errno.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 "jumpshot.h"
|
|
|
|
|
|
static inline int jumpshot_bulk_read(struct us_data *us,
|
|
unsigned char *data,
|
|
unsigned int len)
|
|
{
|
|
if (len == 0)
|
|
return USB_STOR_XFER_GOOD;
|
|
|
|
US_DEBUGP("jumpshot_bulk_read: len = %d\n", len);
|
|
return usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
|
|
data, len, NULL);
|
|
}
|
|
|
|
|
|
static inline int jumpshot_bulk_write(struct us_data *us,
|
|
unsigned char *data,
|
|
unsigned int len)
|
|
{
|
|
if (len == 0)
|
|
return USB_STOR_XFER_GOOD;
|
|
|
|
US_DEBUGP("jumpshot_bulk_write: len = %d\n", len);
|
|
return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
|
|
data, len, NULL);
|
|
}
|
|
|
|
|
|
static int jumpshot_get_status(struct us_data *us)
|
|
{
|
|
int rc;
|
|
|
|
if (!us)
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
|
|
// send the setup
|
|
rc = usb_stor_ctrl_transfer(us, us->recv_ctrl_pipe,
|
|
0, 0xA0, 0, 7, us->iobuf, 1);
|
|
|
|
if (rc != USB_STOR_XFER_GOOD)
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
|
|
if (us->iobuf[0] != 0x50) {
|
|
US_DEBUGP("jumpshot_get_status: 0x%2x\n",
|
|
us->iobuf[0]);
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
}
|
|
|
|
return USB_STOR_TRANSPORT_GOOD;
|
|
}
|
|
|
|
static int jumpshot_read_data(struct us_data *us,
|
|
struct jumpshot_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_idx = 0, sg_offset = 0;
|
|
|
|
// we're working in LBA mode. according to the ATA spec,
|
|
// we can support up to 28-bit addressing. I don't know if Jumpshot
|
|
// supports beyond 24-bit addressing. It's kind of hard to test
|
|
// since it requires > 8GB CF card.
|
|
|
|
if (sector > 0x0FFFFFFF)
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
|
|
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 | ((sector >> 24) & 0x0F);
|
|
command[6] = 0x20;
|
|
|
|
// send the setup + command
|
|
result = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
|
|
0, 0x20, 0, 1, command, 7);
|
|
if (result != USB_STOR_XFER_GOOD)
|
|
goto leave;
|
|
|
|
// read the result
|
|
result = jumpshot_bulk_read(us, buffer, len);
|
|
if (result != USB_STOR_XFER_GOOD)
|
|
goto leave;
|
|
|
|
US_DEBUGP("jumpshot_read_data: %d bytes\n", len);
|
|
|
|
// Store the data in the transfer buffer
|
|
usb_stor_access_xfer_buf(buffer, len, us->srb,
|
|
&sg_idx, &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 jumpshot_write_data(struct us_data *us,
|
|
struct jumpshot_info *info,
|
|
u32 sector,
|
|
u32 sectors)
|
|
{
|
|
unsigned char *command = us->iobuf;
|
|
unsigned char *buffer;
|
|
unsigned char thistime;
|
|
unsigned int totallen, alloclen;
|
|
int len, result, waitcount;
|
|
unsigned int sg_idx = 0, sg_offset = 0;
|
|
|
|
// we're working in LBA mode. according to the ATA spec,
|
|
// we can support up to 28-bit addressing. I don't know if Jumpshot
|
|
// supports beyond 24-bit addressing. It's kind of hard to test
|
|
// since it requires > 8GB CF card.
|
|
//
|
|
if (sector > 0x0FFFFFFF)
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
|
|
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_idx, &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 | ((sector >> 24) & 0x0F);
|
|
command[6] = 0x30;
|
|
|
|
// send the setup + command
|
|
result = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
|
|
0, 0x20, 0, 1, command, 7);
|
|
if (result != USB_STOR_XFER_GOOD)
|
|
goto leave;
|
|
|
|
// send the data
|
|
result = jumpshot_bulk_write(us, buffer, len);
|
|
if (result != USB_STOR_XFER_GOOD)
|
|
goto leave;
|
|
|
|
// read the result. apparently the bulk write can complete
|
|
// before the jumpshot drive is finished writing. so we loop
|
|
// here until we get a good return code
|
|
waitcount = 0;
|
|
do {
|
|
result = jumpshot_get_status(us);
|
|
if (result != USB_STOR_TRANSPORT_GOOD) {
|
|
// I have not experimented to find the smallest value.
|
|
//
|
|
msleep(50);
|
|
}
|
|
} while ((result != USB_STOR_TRANSPORT_GOOD) && (waitcount < 10));
|
|
|
|
if (result != USB_STOR_TRANSPORT_GOOD)
|
|
US_DEBUGP("jumpshot_write_data: Gah! Waitcount = 10. Bad write!?\n");
|
|
|
|
sector += thistime;
|
|
totallen -= len;
|
|
} while (totallen > 0);
|
|
|
|
kfree(buffer);
|
|
return result;
|
|
|
|
leave:
|
|
kfree(buffer);
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
}
|
|
|
|
static int jumpshot_id_device(struct us_data *us,
|
|
struct jumpshot_info *info)
|
|
{
|
|
unsigned char *command = us->iobuf;
|
|
unsigned char *reply;
|
|
int rc;
|
|
|
|
if (!us || !info)
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
|
|
command[0] = 0xE0;
|
|
command[1] = 0xEC;
|
|
reply = kmalloc(512, GFP_NOIO);
|
|
if (!reply)
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
|
|
// send the setup
|
|
rc = usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
|
|
0, 0x20, 0, 6, command, 2);
|
|
|
|
if (rc != USB_STOR_XFER_GOOD) {
|
|
US_DEBUGP("jumpshot_id_device: Gah! "
|
|
"send_control for read_capacity failed\n");
|
|
rc = USB_STOR_TRANSPORT_ERROR;
|
|
goto leave;
|
|
}
|
|
|
|
// read the reply
|
|
rc = jumpshot_bulk_read(us, reply, 512);
|
|
if (rc != USB_STOR_XFER_GOOD) {
|
|
rc = USB_STOR_TRANSPORT_ERROR;
|
|
goto leave;
|
|
}
|
|
|
|
info->sectors = ((u32)(reply[117]) << 24) |
|
|
((u32)(reply[116]) << 16) |
|
|
((u32)(reply[115]) << 8) |
|
|
((u32)(reply[114]) );
|
|
|
|
rc = USB_STOR_TRANSPORT_GOOD;
|
|
|
|
leave:
|
|
kfree(reply);
|
|
return rc;
|
|
}
|
|
|
|
static int jumpshot_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 jumpshot_info *info = (struct jumpshot_info *) (us->extra);
|
|
unsigned char *ptr = us->iobuf;
|
|
|
|
pc = srb->cmnd[2] >> 6;
|
|
page_code = srb->cmnd[2] & 0x3F;
|
|
|
|
switch (pc) {
|
|
case 0x0:
|
|
US_DEBUGP("jumpshot_handle_mode_sense: Current values\n");
|
|
break;
|
|
case 0x1:
|
|
US_DEBUGP("jumpshot_handle_mode_sense: Changeable values\n");
|
|
break;
|
|
case 0x2:
|
|
US_DEBUGP("jumpshot_handle_mode_sense: Default values\n");
|
|
break;
|
|
case 0x3:
|
|
US_DEBUGP("jumpshot_handle_mode_sense: 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) {
|
|
case 0x0:
|
|
// 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:
|
|
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 jumpshot_info_destructor(void *extra)
|
|
{
|
|
// this routine is a placeholder...
|
|
// currently, we don't allocate any extra blocks so we're okay
|
|
}
|
|
|
|
|
|
|
|
// Transport for the Lexar 'Jumpshot'
|
|
//
|
|
int jumpshot_transport(struct scsi_cmnd * srb, struct us_data *us)
|
|
{
|
|
struct jumpshot_info *info;
|
|
int rc;
|
|
unsigned long block, blocks;
|
|
unsigned char *ptr = us->iobuf;
|
|
static unsigned char inquiry_response[8] = {
|
|
0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00
|
|
};
|
|
|
|
if (!us->extra) {
|
|
us->extra = kmalloc(sizeof(struct jumpshot_info), GFP_NOIO);
|
|
if (!us->extra) {
|
|
US_DEBUGP("jumpshot_transport: Gah! Can't allocate storage for jumpshot info struct!\n");
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
}
|
|
memset(us->extra, 0, sizeof(struct jumpshot_info));
|
|
us->extra_destructor = jumpshot_info_destructor;
|
|
}
|
|
|
|
info = (struct jumpshot_info *) (us->extra);
|
|
|
|
if (srb->cmnd[0] == INQUIRY) {
|
|
US_DEBUGP("jumpshot_transport: INQUIRY. Returning bogus response.\n");
|
|
memcpy(ptr, inquiry_response, sizeof(inquiry_response));
|
|
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 = jumpshot_get_status(us);
|
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
|
return rc;
|
|
|
|
rc = jumpshot_id_device(us, info);
|
|
if (rc != USB_STOR_TRANSPORT_GOOD)
|
|
return rc;
|
|
|
|
US_DEBUGP("jumpshot_transport: READ_CAPACITY: %ld sectors, %ld bytes per sector\n",
|
|
info->sectors, info->ssize);
|
|
|
|
// build the reply
|
|
//
|
|
((__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) {
|
|
US_DEBUGP("jumpshot_transport: Gah! MODE_SELECT_10.\n");
|
|
return USB_STOR_TRANSPORT_ERROR;
|
|
}
|
|
|
|
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]));
|
|
|
|
US_DEBUGP("jumpshot_transport: READ_10: read block 0x%04lx count %ld\n", block, blocks);
|
|
return jumpshot_read_data(us, info, block, blocks);
|
|
}
|
|
|
|
if (srb->cmnd[0] == READ_12) {
|
|
// I don't think we'll ever see a READ_12 but support 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]));
|
|
|
|
US_DEBUGP("jumpshot_transport: READ_12: read block 0x%04lx count %ld\n", block, blocks);
|
|
return jumpshot_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]));
|
|
|
|
US_DEBUGP("jumpshot_transport: WRITE_10: write block 0x%04lx count %ld\n", block, blocks);
|
|
return jumpshot_write_data(us, info, block, blocks);
|
|
}
|
|
|
|
if (srb->cmnd[0] == WRITE_12) {
|
|
// I don't think we'll ever see a WRITE_12 but support 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]));
|
|
|
|
US_DEBUGP("jumpshot_transport: WRITE_12: write block 0x%04lx count %ld\n", block, blocks);
|
|
return jumpshot_write_data(us, info, block, blocks);
|
|
}
|
|
|
|
|
|
if (srb->cmnd[0] == TEST_UNIT_READY) {
|
|
US_DEBUGP("jumpshot_transport: TEST_UNIT_READY.\n");
|
|
return jumpshot_get_status(us);
|
|
}
|
|
|
|
if (srb->cmnd[0] == REQUEST_SENSE) {
|
|
US_DEBUGP("jumpshot_transport: REQUEST_SENSE.\n");
|
|
|
|
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) {
|
|
US_DEBUGP("jumpshot_transport: MODE_SENSE_6 detected\n");
|
|
return jumpshot_handle_mode_sense(us, srb, 1);
|
|
}
|
|
|
|
if (srb->cmnd[0] == MODE_SENSE_10) {
|
|
US_DEBUGP("jumpshot_transport: MODE_SENSE_10 detected\n");
|
|
return jumpshot_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 */
|
|
US_DEBUGP("jumpshot_transport: START_STOP.\n");
|
|
/* the first jumpshot_id_device after a media change returns
|
|
an error (determined experimentally) */
|
|
rc = jumpshot_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;
|
|
}
|
|
|
|
US_DEBUGP("jumpshot_transport: 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;
|
|
}
|