linux-hardened/include/linux/usb_usual.h
Namjae Jeon eaa05dfcdb [SCSI] usb-storage: add support for write cache quirk
Add support for write cache quirk on usb hdd. scsi driver will be set to wce
by detecting write cache quirk in quirk list when plugging usb hdd.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Pankaj Kumar <pankaj.km@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-07-20 08:59:00 +01:00

104 lines
3.4 KiB
C

/*
* Interface to the libusual.
*
* Copyright (c) 2005 Pete Zaitcev <zaitcev@redhat.com>
* Copyright (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
* Copyright (c) 1999 Michael Gee (michael@linuxspecific.com)
*/
#ifndef __LINUX_USB_USUAL_H
#define __LINUX_USB_USUAL_H
/* We should do this for cleanliness... But other usb_foo.h do not do this. */
/* #include <linux/usb.h> */
/*
* The flags field, which we store in usb_device_id.driver_info.
* It is compatible with the old usb-storage flags in lower 24 bits.
*/
/*
* Static flag definitions. We use this roundabout technique so that the
* proc_info() routine can automatically display a message for each flag.
*/
#define US_DO_ALL_FLAGS \
US_FLAG(SINGLE_LUN, 0x00000001) \
/* allow access to only LUN 0 */ \
US_FLAG(NEED_OVERRIDE, 0x00000002) \
/* unusual_devs entry is necessary */ \
US_FLAG(SCM_MULT_TARG, 0x00000004) \
/* supports multiple targets */ \
US_FLAG(FIX_INQUIRY, 0x00000008) \
/* INQUIRY response needs faking */ \
US_FLAG(FIX_CAPACITY, 0x00000010) \
/* READ CAPACITY response too big */ \
US_FLAG(IGNORE_RESIDUE, 0x00000020) \
/* reported residue is wrong */ \
US_FLAG(BULK32, 0x00000040) \
/* Uses 32-byte CBW length */ \
US_FLAG(NOT_LOCKABLE, 0x00000080) \
/* PREVENT/ALLOW not supported */ \
US_FLAG(GO_SLOW, 0x00000100) \
/* Need delay after Command phase */ \
US_FLAG(NO_WP_DETECT, 0x00000200) \
/* Don't check for write-protect */ \
US_FLAG(MAX_SECTORS_64, 0x00000400) \
/* Sets max_sectors to 64 */ \
US_FLAG(IGNORE_DEVICE, 0x00000800) \
/* Don't claim device */ \
US_FLAG(CAPACITY_HEURISTICS, 0x00001000) \
/* sometimes sizes is too big */ \
US_FLAG(MAX_SECTORS_MIN,0x00002000) \
/* Sets max_sectors to arch min */ \
US_FLAG(BULK_IGNORE_TAG,0x00004000) \
/* Ignore tag mismatch in bulk operations */ \
US_FLAG(SANE_SENSE, 0x00008000) \
/* Sane Sense (> 18 bytes) */ \
US_FLAG(CAPACITY_OK, 0x00010000) \
/* READ CAPACITY response is correct */ \
US_FLAG(BAD_SENSE, 0x00020000) \
/* Bad Sense (never more than 18 bytes) */ \
US_FLAG(NO_READ_DISC_INFO, 0x00040000) \
/* cannot handle READ_DISC_INFO */ \
US_FLAG(NO_READ_CAPACITY_16, 0x00080000) \
/* cannot handle READ_CAPACITY_16 */ \
US_FLAG(INITIAL_READ10, 0x00100000) \
/* Initial READ(10) (and others) must be retried */ \
US_FLAG(WRITE_CACHE, 0x00200000) \
/* Write Cache status is not available */
#define US_FLAG(name, value) US_FL_##name = value ,
enum { US_DO_ALL_FLAGS };
#undef US_FLAG
/*
* The bias field for libusual and friends.
*/
#define USB_US_TYPE_NONE 0
#define USB_US_TYPE_STOR 1 /* usb-storage */
#define USB_US_TYPE_UB 2 /* ub */
#define USB_US_TYPE(flags) (((flags) >> 24) & 0xFF)
#define USB_US_ORIG_FLAGS(flags) ((flags) & 0x00FFFFFF)
#include <linux/usb/storage.h>
/*
*/
extern int usb_usual_ignore_device(struct usb_interface *intf);
extern struct usb_device_id usb_storage_usb_ids[];
#ifdef CONFIG_USB_LIBUSUAL
extern void usb_usual_set_present(int type);
extern void usb_usual_clear_present(int type);
extern int usb_usual_check_type(const struct usb_device_id *, int type);
#else
#define usb_usual_set_present(t) do { } while(0)
#define usb_usual_clear_present(t) do { } while(0)
#define usb_usual_check_type(id, t) (0)
#endif /* CONFIG_USB_LIBUSUAL */
#endif /* __LINUX_USB_USUAL_H */