[PATCH] USB: drivers/usb/storage/libusual
This patch adds a shim driver libusual, which routes devices between
usb-storage and ub according to the common table, based on unusual_devs.h.
The help and example syntax is in Kconfig.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h
new file mode 100644
index 0000000..f9c058f
--- /dev/null
+++ b/include/linux/usb_usual.h
@@ -0,0 +1,123 @@
+/*
+ * 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
+
+#include <linux/config.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 */ \
+
+#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)
+
+/*
+ * This is probably not the best place to keep these constants, conceptually.
+ * But it's the only header included into all places which need them.
+ */
+
+/* Sub Classes */
+
+#define US_SC_RBC 0x01 /* Typically, flash devices */
+#define US_SC_8020 0x02 /* CD-ROM */
+#define US_SC_QIC 0x03 /* QIC-157 Tapes */
+#define US_SC_UFI 0x04 /* Floppy */
+#define US_SC_8070 0x05 /* Removable media */
+#define US_SC_SCSI 0x06 /* Transparent */
+#define US_SC_ISD200 0x07 /* ISD200 ATA */
+#define US_SC_MIN US_SC_RBC
+#define US_SC_MAX US_SC_ISD200
+
+#define US_SC_DEVICE 0xff /* Use device's value */
+
+/* Protocols */
+
+#define US_PR_CBI 0x00 /* Control/Bulk/Interrupt */
+#define US_PR_CB 0x01 /* Control/Bulk w/o interrupt */
+#define US_PR_BULK 0x50 /* bulk only */
+#ifdef CONFIG_USB_STORAGE_USBAT
+#define US_PR_USBAT 0x80 /* SCM-ATAPI bridge */
+#endif
+#ifdef CONFIG_USB_STORAGE_SDDR09
+#define US_PR_EUSB_SDDR09 0x81 /* SCM-SCSI bridge for SDDR-09 */
+#endif
+#ifdef CONFIG_USB_STORAGE_SDDR55
+#define US_PR_SDDR55 0x82 /* SDDR-55 (made up) */
+#endif
+#define US_PR_DPCM_USB 0xf0 /* Combination CB/SDDR09 */
+#ifdef CONFIG_USB_STORAGE_FREECOM
+#define US_PR_FREECOM 0xf1 /* Freecom */
+#endif
+#ifdef CONFIG_USB_STORAGE_DATAFAB
+#define US_PR_DATAFAB 0xf2 /* Datafab chipsets */
+#endif
+#ifdef CONFIG_USB_STORAGE_JUMPSHOT
+#define US_PR_JUMPSHOT 0xf3 /* Lexar Jumpshot */
+#endif
+
+#define US_PR_DEVICE 0xff /* Use device's value */
+
+/*
+ */
+#ifdef CONFIG_USB_LIBUSUAL
+
+extern struct usb_device_id storage_usb_ids[];
+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 */
