Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 204 insertions, 0 deletions

diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h
new file mode 100644
index 00000000000..625b7aa9807
--- /dev/null
+++ b/drivers/usb/storage/usb.h
@@ -0,0 +1,204 @@
+/* Driver for USB Mass Storage compliant devices
+ * Main Header File
+ *
+ * $Id: usb.h,v 1.21 2002/04/21 02:57:59 mdharm Exp $
+ *
+ * Current development and maintenance by:
+ *   (c) 1999-2002 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
+ *
+ * Initial work by:
+ *   (c) 1999 Michael Gee (michael@linuxspecific.com)
+ *
+ * This driver is based on the 'USB Mass Storage Class' document. This
+ * describes in detail the protocol used to communicate with such
+ * devices.  Clearly, the designers had SCSI and ATAPI commands in
+ * mind when they created this document.  The commands are all very
+ * similar to commands in the SCSI-II and ATAPI specifications.
+ *
+ * It is important to note that in a number of cases this class
+ * exhibits class-specific exemptions from the USB specification.
+ * Notably the usage of NAK, STALL and ACK differs from the norm, in
+ * that they are used to communicate wait, failed and OK on commands.
+ *
+ * Also, for certain devices, the interrupt endpoint is used to convey
+ * status of a command.
+ *
+ * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
+ * information about this driver.
+ *
+ * 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.
+ */
+
+#ifndef _USB_H_
+#define _USB_H_
+
+#include <linux/usb.h>
+#include <linux/blkdev.h>
+#include <linux/smp_lock.h>
+#include <linux/completion.h>
+#include <scsi/scsi_host.h>
+
+struct us_data;
+struct scsi_cmnd;
+
+/*
+ * Unusual device list definitions 
+ */
+
+struct us_unusual_dev {
+	const char* vendorName;
+	const char* productName;
+	__u8  useProtocol;
+	__u8  useTransport;
+	int (*initFunction)(struct us_data *);
+	unsigned int flags;
+};
+
+/*
+ * 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
+
+/* Dynamic flag definitions: used in set_bit() etc. */
+#define US_FLIDX_URB_ACTIVE	18  /* 0x00040000  current_urb is in use  */
+#define US_FLIDX_SG_ACTIVE	19  /* 0x00080000  current_sg is in use   */
+#define US_FLIDX_ABORTING	20  /* 0x00100000  abort is in progress   */
+#define US_FLIDX_DISCONNECTING	21  /* 0x00200000  disconnect in progress */
+#define ABORTING_OR_DISCONNECTING	((1UL << US_FLIDX_ABORTING) | \
+					 (1UL << US_FLIDX_DISCONNECTING))
+#define US_FLIDX_RESETTING	22  /* 0x00400000  device reset in progress */
+#define US_FLIDX_TIMED_OUT	23  /* 0x00800000  SCSI midlayer timed out  */
+
+
+#define USB_STOR_STRING_LEN 32
+
+/*
+ * We provide a DMA-mapped I/O buffer for use with small USB transfers.
+ * It turns out that CB[I] needs a 12-byte buffer and Bulk-only needs a
+ * 31-byte buffer.  But Freecom needs a 64-byte buffer, so that's the
+ * size we'll allocate.
+ */
+
+#define US_IOBUF_SIZE		64	/* Size of the DMA-mapped I/O buffer */
+
+typedef int (*trans_cmnd)(struct scsi_cmnd *, struct us_data*);
+typedef int (*trans_reset)(struct us_data*);
+typedef void (*proto_cmnd)(struct scsi_cmnd*, struct us_data*);
+typedef void (*extra_data_destructor)(void *);	 /* extra data destructor   */
+
+/* we allocate one of these for every device that we remember */
+struct us_data {
+	/* The device we're working with
+	 * It's important to note:
+	 *    (o) you must hold dev_semaphore to change pusb_dev
+	 */
+	struct semaphore	dev_semaphore;	 /* protect pusb_dev */
+	struct usb_device	*pusb_dev;	 /* this usb_device */
+	struct usb_interface	*pusb_intf;	 /* this interface */
+	struct us_unusual_dev   *unusual_dev;	 /* device-filter entry     */
+	unsigned long		flags;		 /* from filter initially */
+	unsigned int		send_bulk_pipe;	 /* cached pipe values */
+	unsigned int		recv_bulk_pipe;
+	unsigned int		send_ctrl_pipe;
+	unsigned int		recv_ctrl_pipe;
+	unsigned int		recv_intr_pipe;
+
+	/* information about the device */
+	char			*transport_name;
+	char			*protocol_name;
+	__le32			bcs_signature;
+	u8			subclass;
+	u8			protocol;
+	u8			max_lun;
+
+	u8			ifnum;		 /* interface number   */
+	u8			ep_bInterval;	 /* interrupt interval */ 
+
+	/* function pointers for this device */
+	trans_cmnd		transport;	 /* transport function	   */
+	trans_reset		transport_reset; /* transport device reset */
+	proto_cmnd		proto_handler;	 /* protocol handler	   */
+
+	/* SCSI interfaces */
+	struct scsi_cmnd	*srb;		 /* current srb		*/
+
+	/* thread information */
+	int			pid;		 /* control thread	 */
+
+	/* control and bulk communications data */
+	struct urb		*current_urb;	 /* USB requests	 */
+	struct usb_ctrlrequest	*cr;		 /* control requests	 */
+	struct usb_sg_request	current_sg;	 /* scatter-gather req.  */
+	unsigned char		*iobuf;		 /* I/O buffer		 */
+	dma_addr_t		cr_dma;		 /* buffer DMA addresses */
+	dma_addr_t		iobuf_dma;
+
+	/* mutual exclusion and synchronization structures */
+	struct semaphore	sema;		 /* to sleep thread on	    */
+	struct completion	notify;		 /* thread begin/end	    */
+	wait_queue_head_t	delay_wait;	 /* wait during scan, reset */
+
+	/* subdriver information */
+	void			*extra;		 /* Any extra data          */
+	extra_data_destructor	extra_destructor;/* extra data destructor   */
+};
+
+/* Convert between us_data and the corresponding Scsi_Host */
+static struct Scsi_Host inline *us_to_host(struct us_data *us) {
+	return container_of((void *) us, struct Scsi_Host, hostdata);
+}
+static struct us_data inline *host_to_us(struct Scsi_Host *host) {
+	return (struct us_data *) host->hostdata;
+}
+
+/* Function to fill an inquiry response. See usb.c for details */
+extern void fill_inquiry_response(struct us_data *us,
+	unsigned char *data, unsigned int data_len);
+
+/* The scsi_lock() and scsi_unlock() macros protect the sm_state and the
+ * single queue element srb for write access */
+#define scsi_unlock(host)	spin_unlock_irq(host->host_lock)
+#define scsi_lock(host)		spin_lock_irq(host->host_lock)
+
+
+/* Vendor ID list for devices that require special handling */
+#define USB_VENDOR_ID_GENESYS		0x05e3	/* Genesys Logic */
+
+#endif