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USB Storage: add rio karma eject support

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This changeset from Keith Bennett (via Bob Copeland) moves the Karma
initializer to its own file and adds trapping of the START_STOP command to
enable eject of the device.

Signed-off-by: Keith Bennett <keith@mcs.st-and.ac.uk>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Matthew Dharm 2006-08-13 17:30:14 -07:00 committed by Greg Kroah-Hartman
parent c07045412f
commit dfe0d3ba20
9 changed files with 190 additions and 75 deletions
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12
drivers/usb/storage/Kconfig
View file

@ -135,6 +135,18 @@ config USB_STORAGE_ONETOUCH
this input in any keybinding software. (e.g. gnome's keyboard short-
cuts)
config USB_STORAGE_KARMA
bool "Support for Rio Karma music player"
depends on USB_STORAGE
help
Say Y here to include additional code to support the Rio Karma
USB interface.
This code places the Rio Karma into mass storage mode, enabling
it to be mounted as an ordinary filesystem. Performing an eject
on the resulting scsi device node returns the Karma to normal
operation.
config USB_LIBUSUAL
bool "The shared table of common (or usual) storage devices"
depends on USB

1
drivers/usb/storage/Makefile
View file

@ -20,6 +20,7 @@ usb-storage-obj-$(CONFIG_USB_STORAGE_DATAFAB) += datafab.o
usb-storage-obj-$(CONFIG_USB_STORAGE_JUMPSHOT) += jumpshot.o
usb-storage-obj-$(CONFIG_USB_STORAGE_ALAUDA) += alauda.o
usb-storage-obj-$(CONFIG_USB_STORAGE_ONETOUCH) += onetouch.o
usb-storage-obj-$(CONFIG_USB_STORAGE_KARMA) += karma.o
usb-storage-objs := scsiglue.o protocol.o transport.o usb.o \
initializers.o $(usb-storage-obj-y)

73
drivers/usb/storage/initializers.c
View file

@ -45,12 +45,6 @@
#include "debug.h"
#include "transport.h"
#define RIO_MSC 0x08
#define RIOP_INIT "RIOP\x00\x01\x08"
#define RIOP_INIT_LEN 7
#define RIO_SEND_LEN 40
#define RIO_RECV_LEN 0x200
/* This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target
* mode */
int usb_stor_euscsi_init(struct us_data *us)
@ -97,70 +91,3 @@ int usb_stor_ucr61s2b_init(struct us_data *us)
return (res ? -1 : 0);
}
/* Place the Rio Karma into mass storage mode.
*
* The initialization begins by sending 40 bytes starting
* RIOP\x00\x01\x08\x00, which the device will ack with a 512-byte
* packet with the high four bits set and everything else null.
*
* Next, we send RIOP\x80\x00\x08\x00. Each time, a 512 byte response
* must be read, but we must loop until byte 5 in the response is 0x08,
* indicating success. */
int rio_karma_init(struct us_data *us)
{
int result, partial;
char *recv;
unsigned long timeout;
// us->iobuf is big enough to hold cmd but not receive
if (!(recv = kmalloc(RIO_RECV_LEN, GFP_KERNEL)))
goto die_nomem;
US_DEBUGP("Initializing Karma...\n");
memset(us->iobuf, 0, RIO_SEND_LEN);
memcpy(us->iobuf, RIOP_INIT, RIOP_INIT_LEN);
result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
us->iobuf, RIO_SEND_LEN, &partial);
if (result != USB_STOR_XFER_GOOD)
goto die;
result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
recv, RIO_RECV_LEN, &partial);
if (result != USB_STOR_XFER_GOOD)
goto die;
us->iobuf[4] = 0x80;
us->iobuf[5] = 0;
timeout = jiffies + msecs_to_jiffies(3000);
for (;;) {
US_DEBUGP("Sending init command\n");
result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
us->iobuf, RIO_SEND_LEN, &partial);
if (result != USB_STOR_XFER_GOOD)
goto die;
result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
recv, RIO_RECV_LEN, &partial);
if (result != USB_STOR_XFER_GOOD)
goto die;
if (recv[5] == RIO_MSC)
break;
if (time_after(jiffies, timeout))
goto die;
msleep(10);
}
US_DEBUGP("Karma initialized.\n");
kfree(recv);
return 0;
die:
kfree(recv);
die_nomem:
US_DEBUGP("Could not initialize karma.\n");
return USB_STOR_TRANSPORT_FAILED;
}

1
drivers/usb/storage/initializers.h
View file

@ -47,4 +47,3 @@ int usb_stor_euscsi_init(struct us_data *us);
/* This function is required to activate all four slots on the UCR-61S2B
* flash reader */
int usb_stor_ucr61s2b_init(struct us_data *us);
int rio_karma_init(struct us_data *us);

155
drivers/usb/storage/karma.c Normal file
View file

@ -0,0 +1,155 @@
/* Driver for Rio Karma
*
* (c) 2006 Bob Copeland <me@bobcopeland.com>
* (c) 2006 Keith Bennett <keith@mcs.st-and.ac.uk>
*
* 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.
*/
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include "usb.h"
#include "transport.h"
#include "debug.h"
#include "karma.h"
#define RIO_PREFIX "RIOP\x00"
#define RIO_PREFIX_LEN 5
#define RIO_SEND_LEN 40
#define RIO_RECV_LEN 0x200
#define RIO_ENTER_STORAGE 0x1
#define RIO_LEAVE_STORAGE 0x2
#define RIO_RESET 0xC
extern int usb_stor_Bulk_transport(struct scsi_cmnd *, struct us_data *);
struct karma_data {
int in_storage;
char *recv;
};
/*
* Send commands to Rio Karma.
*
* For each command we send 40 bytes starting 'RIOP\0' followed by
* the command number and a sequence number, which the device will ack
* with a 512-byte packet with the high four bits set and everything
* else null. Then we send 'RIOP\x80' followed by a zero and the
* sequence number, until byte 5 in the response repeats the sequence
* number.
*/
static int rio_karma_send_command(char cmd, struct us_data *us)
{
int result, partial;
unsigned long timeout;
static unsigned char seq = 1;
struct karma_data *data = (struct karma_data *) us->extra;
US_DEBUGP("karma: sending command %04x\n", cmd);
memset(us->iobuf, 0, RIO_SEND_LEN);
memcpy(us->iobuf, RIO_PREFIX, RIO_PREFIX_LEN);
us->iobuf[5] = cmd;
us->iobuf[6] = seq;
timeout = jiffies + msecs_to_jiffies(6000);
for (;;) {
result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
us->iobuf, RIO_SEND_LEN, &partial);
if (result != USB_STOR_XFER_GOOD)
goto err;
result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
data->recv, RIO_RECV_LEN, &partial);
if (result != USB_STOR_XFER_GOOD)
goto err;
if (data->recv[5] == seq)
break;
if (time_after(jiffies, timeout))
goto err;
us->iobuf[4] = 0x80;
us->iobuf[5] = 0;
msleep(50);
}
seq++;
if (seq == 0)
seq = 1;
US_DEBUGP("karma: sent command %04x\n", cmd);
return 0;
err:
US_DEBUGP("karma: command %04x failed\n", cmd);
return USB_STOR_TRANSPORT_FAILED;
}
/*
* Trap START_STOP and READ_10 to leave/re-enter storage mode.
* Everything else is propagated to the normal bulk layer.
*/
int rio_karma_transport(struct scsi_cmnd *srb, struct us_data *us)
{
int ret;
struct karma_data *data = (struct karma_data *) us->extra;
if (srb->cmnd[0] == READ_10 && !data->in_storage) {
ret = rio_karma_send_command(RIO_ENTER_STORAGE, us);
if (ret)
return ret;
data->in_storage = 1;
return usb_stor_Bulk_transport(srb, us);
} else if (srb->cmnd[0] == START_STOP) {
ret = rio_karma_send_command(RIO_LEAVE_STORAGE, us);
if (ret)
return ret;
data->in_storage = 0;
return rio_karma_send_command(RIO_RESET, us);
}
return usb_stor_Bulk_transport(srb, us);
}
static void rio_karma_destructor(void *extra)
{
struct karma_data *data = (struct karma_data *) extra;
kfree(data->recv);
}
int rio_karma_init(struct us_data *us)
{
int ret = 0;
struct karma_data *data = kzalloc(sizeof(struct karma_data), GFP_NOIO);
if (!data)
goto out;
data->recv = kmalloc(RIO_RECV_LEN, GFP_NOIO);
if (!data->recv) {
kfree(data);
goto out;
}
us->extra = data;
us->extra_destructor = rio_karma_destructor;
ret = rio_karma_send_command(RIO_ENTER_STORAGE, us);
data->in_storage = (ret == 0);
out:
return ret;
}

7
drivers/usb/storage/karma.h Normal file
View file

@ -0,0 +1,7 @@
#ifndef _KARMA_USB_H
#define _KARMA_USB_H
extern int rio_karma_init(struct us_data *us);
extern int rio_karma_transport(struct scsi_cmnd *srb, struct us_data *us);
#endif

2
drivers/usb/storage/unusual_devs.h
View file

@ -221,7 +221,7 @@ UNUSUAL_DEV( 0x0457, 0x0151, 0x0100, 0x0100,
UNUSUAL_DEV( 0x045a, 0x5210, 0x0101, 0x0101,
"Rio",
"Rio Karma",
US_SC_SCSI, US_PR_BULK, rio_karma_init, 0),
US_SC_SCSI, US_PR_KARMA, rio_karma_init, 0),
/* Patch submitted by Philipp Friedrich <philipp@void.at> */
UNUSUAL_DEV( 0x0482, 0x0100, 0x0100, 0x0100,

11
drivers/usb/storage/usb.c
View file

@ -98,6 +98,9 @@
#ifdef CONFIG_USB_STORAGE_ALAUDA
#include "alauda.h"
#endif
#ifdef CONFIG_USB_STORAGE_KARMA
#include "karma.h"
#endif
/* Some informational data */
MODULE_AUTHOR("Matthew Dharm <mdharm-usb@one-eyed-alien.net>");
@ -646,6 +649,14 @@ static int get_transport(struct us_data *us)
break;
#endif
#ifdef CONFIG_USB_STORAGE_KARMA
case US_PR_KARMA:
us->transport_name = "Rio Karma/Bulk";
us->transport = rio_karma_transport;
us->transport_reset = usb_stor_Bulk_reset;
break;
#endif
default:
return -EIO;
}

3
include/linux/usb_usual.h
View file

@ -108,6 +108,9 @@ enum { US_DO_ALL_FLAGS };
#ifdef CONFIG_USB_STORAGE_ALAUDA
#define US_PR_ALAUDA 0xf4 /* Alauda chipsets */
#endif
#ifdef CONFIG_USB_STORAGE_KARMA
#define US_PR_KARMA 0xf5 /* Rio Karma */
#endif
#define US_PR_DEVICE 0xff /* Use device's value */