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usb-storage: make cypress_atacb a separate module

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This patch (as1210) converts usb-storage's cypress_atacb subdriver
into a separate module.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern 2009-02-12 14:48:04 -05:00 committed by Greg Kroah-Hartman
parent 70fcc00507
commit fcdb51401f
7 changed files with 111 additions and 39 deletions
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4
drivers/usb/storage/Kconfig
View file

@ -146,7 +146,7 @@ config USB_STORAGE_KARMA
operation.
config USB_STORAGE_CYPRESS_ATACB
bool "SAT emulation on Cypress USB/ATA Bridge with ATACB"
tristate "SAT emulation on Cypress USB/ATA Bridge with ATACB"
depends on USB_STORAGE
---help---
Say Y here if you want to use SAT (ata pass through) on devices based
@ -156,6 +156,8 @@ config USB_STORAGE_CYPRESS_ATACB
If you say no here your device will still work with the standard usb
mass storage class.
If this driver is compiled as a module, it will be named ums-cypress.
config USB_LIBUSUAL
bool "The shared table of common (or usual) storage devices"
depends on USB

3
drivers/usb/storage/Makefile
View file

@ -17,7 +17,6 @@ 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-obj-$(CONFIG_USB_STORAGE_CYPRESS_ATACB) += cypress_atacb.o
usb-storage-objs := scsiglue.o protocol.o transport.o usb.o \
initializers.o sierra_ms.o option_ms.o $(usb-storage-obj-y)
@ -28,10 +27,12 @@ else
obj-$(CONFIG_USB) += libusual.o usual-tables.o
endif
obj-$(CONFIG_USB_STORAGE_CYPRESS_ATACB) += ums-cypress.o
obj-$(CONFIG_USB_STORAGE_ISD200) += ums-isd200.o
obj-$(CONFIG_USB_STORAGE_SDDR09) += ums-sddr09.o
obj-$(CONFIG_USB_STORAGE_SDDR55) += ums-sddr55.o
ums-cypress-objs := cypress_atacb.o
ums-isd200-objs := isd200.o
ums-sddr09-objs := sddr09.o
ums-sddr55-objs := sddr55.o

88
drivers/usb/storage/cypress_atacb.c
View file

@ -19,6 +19,7 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
@ -29,6 +30,46 @@
#include "scsiglue.h"
#include "debug.h"
/*
* 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)|(USB_US_TYPE_STOR<<24) }
struct usb_device_id cypress_usb_ids[] = {
# include "unusual_cypress.h"
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, cypress_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 cypress_unusual_dev_list[] = {
# include "unusual_cypress.h"
{ } /* Terminating entry */
};
#undef UNUSUAL_DEV
/*
* ATACB is a protocol used on cypress usb<->ata bridge to
* send raw ATA command over mass storage
@ -36,7 +77,7 @@
* More info that be found on cy7c68310_8.pdf and cy7c68300c_8.pdf
* datasheet from cypress.com.
*/
void cypress_atacb_passthrough(struct scsi_cmnd *srb, struct us_data *us)
static void cypress_atacb_passthrough(struct scsi_cmnd *srb, struct us_data *us)
{
unsigned char save_cmnd[MAX_COMMAND_SIZE];
@ -197,3 +238,48 @@ end:
if (srb->cmnd[0] == ATA_12)
srb->cmd_len = 12;
}
static int cypress_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 - cypress_usb_ids) + cypress_unusual_dev_list);
if (result)
return result;
us->protocol_name = "Transparent SCSI with Cypress ATACB";
us->proto_handler = cypress_atacb_passthrough;
result = usb_stor_probe2(us);
return result;
}
static struct usb_driver cypress_driver = {
.name = "ums-cypress",
.probe = cypress_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 = cypress_usb_ids,
.soft_unbind = 1,
};
static int __init cypress_init(void)
{
return usb_register(&cypress_driver);
}
static void __exit cypress_exit(void)
{
usb_deregister(&cypress_driver);
}
module_init(cypress_init);
module_exit(cypress_exit);

27
drivers/usb/storage/cypress_atacb.h → drivers/usb/storage/unusual_cypress.h
View file

@ -1,8 +1,5 @@
/*
* Support for emulating SAT (ata pass through) on devices based
* on the Cypress USB/ATA bridge supporting ATACB.
*
* Copyright (c) 2008 Matthieu Castet (castet.matthieu@free.fr)
/* Unusual Devices File for devices based on the Cypress USB/ATA bridge
* with support for ATACB
*
* 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
@ -19,7 +16,19 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _CYPRESS_ATACB_H_
#define _CYPRESS_ATACB_H_
extern void cypress_atacb_passthrough(struct scsi_cmnd*, struct us_data*);
#endif
#if defined(CONFIG_USB_STORAGE_CYPRESS_ATACB) || \
defined(CONFIG_USB_STORAGE_CYPRESS_ATACB_MODULE)
/* CY7C68300 : support atacb */
UNUSUAL_DEV( 0x04b4, 0x6830, 0x0000, 0x9999,
"Cypress",
"Cypress AT2LP",
US_SC_CYP_ATACB, US_PR_DEVICE, NULL, 0),
/* CY7C68310 : support atacb and atacb2 */
UNUSUAL_DEV( 0x04b4, 0x6831, 0x0000, 0x9999,
"Cypress",
"Cypress ISD-300LP",
US_SC_CYP_ATACB, US_PR_DEVICE, NULL, 0),
#endif /* defined(CONFIG_USB_STORAGE_CYPRESS_ATACB) || ... */

16
drivers/usb/storage/unusual_devs.h
View file

@ -375,22 +375,6 @@ UNUSUAL_DEV( 0x04b3, 0x4001, 0x0110, 0x0110,
US_SC_DEVICE, US_PR_CB, NULL,
US_FL_MAX_SECTORS_MIN),
#ifdef CONFIG_USB_STORAGE_CYPRESS_ATACB
/* CY7C68300 : support atacb */
UNUSUAL_DEV( 0x04b4, 0x6830, 0x0000, 0x9999,
"Cypress",
"Cypress AT2LP",
US_SC_CYP_ATACB, US_PR_DEVICE, NULL,
0),
/* CY7C68310 : support atacb and atacb2 */
UNUSUAL_DEV( 0x04b4, 0x6831, 0x0000, 0x9999,
"Cypress",
"Cypress ISD-300LP",
US_SC_CYP_ATACB, US_PR_DEVICE, NULL,
0),
#endif
/* Reported by Simon Levitt <simon@whattf.com>
* This entry needs Sub and Proto fields */
UNUSUAL_DEV( 0x04b8, 0x0601, 0x0100, 0x0100,

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

@ -87,9 +87,6 @@
#ifdef CONFIG_USB_STORAGE_KARMA
#include "karma.h"
#endif
#ifdef CONFIG_USB_STORAGE_CYPRESS_ATACB
#include "cypress_atacb.h"
#endif
#include "sierra_ms.h"
#include "option_ms.h"
@ -705,14 +702,6 @@ static void get_protocol(struct us_data *us)
us->protocol_name = "Uniform Floppy Interface (UFI)";
us->proto_handler = usb_stor_ufi_command;
break;
#ifdef CONFIG_USB_STORAGE_CYPRESS_ATACB
case US_SC_CYP_ATACB:
us->protocol_name = "Transparent SCSI with Cypress ATACB";
us->proto_handler = cypress_atacb_passthrough;
break;
#endif
}
}

1
drivers/usb/storage/usual-tables.c
View file

@ -77,6 +77,7 @@ struct ignore_entry {
}
static struct ignore_entry ignore_ids[] = {
# include "unusual_cypress.h"
# include "unusual_isd200.h"
# include "unusual_sddr09.h"
# include "unusual_sddr55.h"