e6e244b6cb
This patch (as1206) is the first step in converting usb-storage's subdrivers into separate modules. It makes the following large-scale changes: Remove a bunch of unnecessary #ifdef's from usb_usual.h. Not truly necessary, but it does clean things up. Move the USB device-ID table (which is duplicated between libusual and usb-storage) into its own source file, usual-tables.c, and arrange for this to be linked with either libusual or usb-storage according to whether USB_LIBUSUAL is configured. Add to usual-tables.c a new usb_usual_ignore_device() function to detect whether a particular device needs to be managed by a subdriver and not by the standard handlers in usb-storage. Export a whole bunch of functions in usb-storage, renaming some of them because their names don't already begin with "usb_stor_". These functions will be needed by the new subdriver modules. Split usb-storage's probe routine into two functions. The subdrivers will call the probe1 routine, then fill in their transport and protocol settings, and then call the probe2 routine. Take the default cases and error checking out of get_transport() and get_protocol(), which run during probe1, and instead put a check for invalid transport or protocol values into the probe2 function. Add a new probe routine to be used for standard devices, i.e., those that don't need a subdriver. This new routine checks whether the device should be ignored (because it should be handled by ub or by a subdriver), and if not, calls the probe1 and probe2 functions. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: Matthew Dharm <mdharm-usb@one-eyed-alien.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
/*
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* Interface to the libusual.
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*
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* Copyright (c) 2005 Pete Zaitcev <zaitcev@redhat.com>
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* Copyright (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
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* Copyright (c) 1999 Michael Gee (michael@linuxspecific.com)
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*/
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#ifndef __LINUX_USB_USUAL_H
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#define __LINUX_USB_USUAL_H
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/* We should do this for cleanliness... But other usb_foo.h do not do this. */
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/* #include <linux/usb.h> */
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/*
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* The flags field, which we store in usb_device_id.driver_info.
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* It is compatible with the old usb-storage flags in lower 24 bits.
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*/
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/*
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* Static flag definitions. We use this roundabout technique so that the
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* proc_info() routine can automatically display a message for each flag.
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*/
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#define US_DO_ALL_FLAGS \
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US_FLAG(SINGLE_LUN, 0x00000001) \
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/* allow access to only LUN 0 */ \
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US_FLAG(NEED_OVERRIDE, 0x00000002) \
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/* unusual_devs entry is necessary */ \
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US_FLAG(SCM_MULT_TARG, 0x00000004) \
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/* supports multiple targets */ \
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US_FLAG(FIX_INQUIRY, 0x00000008) \
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/* INQUIRY response needs faking */ \
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US_FLAG(FIX_CAPACITY, 0x00000010) \
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/* READ CAPACITY response too big */ \
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US_FLAG(IGNORE_RESIDUE, 0x00000020) \
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/* reported residue is wrong */ \
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US_FLAG(BULK32, 0x00000040) \
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/* Uses 32-byte CBW length */ \
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US_FLAG(NOT_LOCKABLE, 0x00000080) \
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/* PREVENT/ALLOW not supported */ \
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US_FLAG(GO_SLOW, 0x00000100) \
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/* Need delay after Command phase */ \
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US_FLAG(NO_WP_DETECT, 0x00000200) \
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/* Don't check for write-protect */ \
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US_FLAG(MAX_SECTORS_64, 0x00000400) \
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/* Sets max_sectors to 64 */ \
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US_FLAG(IGNORE_DEVICE, 0x00000800) \
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/* Don't claim device */ \
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US_FLAG(CAPACITY_HEURISTICS, 0x00001000) \
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/* sometimes sizes is too big */ \
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US_FLAG(MAX_SECTORS_MIN,0x00002000) \
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/* Sets max_sectors to arch min */ \
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US_FLAG(BULK_IGNORE_TAG,0x00004000) \
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/* Ignore tag mismatch in bulk operations */ \
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US_FLAG(SANE_SENSE, 0x00008000) \
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/* Sane Sense (> 18 bytes) */ \
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US_FLAG(CAPACITY_OK, 0x00010000) \
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/* READ CAPACITY response is correct */
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#define US_FLAG(name, value) US_FL_##name = value ,
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enum { US_DO_ALL_FLAGS };
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#undef US_FLAG
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/*
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* The bias field for libusual and friends.
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*/
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#define USB_US_TYPE_NONE 0
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#define USB_US_TYPE_STOR 1 /* usb-storage */
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#define USB_US_TYPE_UB 2 /* ub */
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#define USB_US_TYPE(flags) (((flags) >> 24) & 0xFF)
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#define USB_US_ORIG_FLAGS(flags) ((flags) & 0x00FFFFFF)
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/*
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* This is probably not the best place to keep these constants, conceptually.
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* But it's the only header included into all places which need them.
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*/
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/* Sub Classes */
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#define US_SC_RBC 0x01 /* Typically, flash devices */
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#define US_SC_8020 0x02 /* CD-ROM */
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#define US_SC_QIC 0x03 /* QIC-157 Tapes */
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#define US_SC_UFI 0x04 /* Floppy */
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#define US_SC_8070 0x05 /* Removable media */
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#define US_SC_SCSI 0x06 /* Transparent */
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#define US_SC_LOCKABLE 0x07 /* Password-protected */
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#define US_SC_ISD200 0xf0 /* ISD200 ATA */
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#define US_SC_CYP_ATACB 0xf1 /* Cypress ATACB */
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#define US_SC_DEVICE 0xff /* Use device's value */
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/* Protocols */
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#define US_PR_CBI 0x00 /* Control/Bulk/Interrupt */
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#define US_PR_CB 0x01 /* Control/Bulk w/o interrupt */
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#define US_PR_BULK 0x50 /* bulk only */
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#define US_PR_USBAT 0x80 /* SCM-ATAPI bridge */
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#define US_PR_EUSB_SDDR09 0x81 /* SCM-SCSI bridge for SDDR-09 */
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#define US_PR_SDDR55 0x82 /* SDDR-55 (made up) */
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#define US_PR_DPCM_USB 0xf0 /* Combination CB/SDDR09 */
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#define US_PR_FREECOM 0xf1 /* Freecom */
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#define US_PR_DATAFAB 0xf2 /* Datafab chipsets */
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#define US_PR_JUMPSHOT 0xf3 /* Lexar Jumpshot */
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#define US_PR_ALAUDA 0xf4 /* Alauda chipsets */
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#define US_PR_KARMA 0xf5 /* Rio Karma */
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#define US_PR_DEVICE 0xff /* Use device's value */
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/*
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*/
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extern int usb_usual_ignore_device(struct usb_interface *intf);
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extern struct usb_device_id usb_storage_usb_ids[];
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#ifdef CONFIG_USB_LIBUSUAL
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extern void usb_usual_set_present(int type);
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extern void usb_usual_clear_present(int type);
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extern int usb_usual_check_type(const struct usb_device_id *, int type);
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#else
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#define usb_usual_set_present(t) do { } while(0)
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#define usb_usual_clear_present(t) do { } while(0)
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#define usb_usual_check_type(id, t) (0)
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#endif /* CONFIG_USB_LIBUSUAL */
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#endif /* __LINUX_USB_USUAL_H */
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