Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 1389 deletions

diff --git a/ANDROID_3.4.5/drivers/usb/mon/mon_bin.c b/ANDROID_3.4.5/drivers/usb/mon/mon_bin.c
deleted file mode 100644
index 91cd8507..00000000
--- a/ANDROID_3.4.5/drivers/usb/mon/mon_bin.c
+++ /dev/null
@@ -1,1389 +0,0 @@
-/*
- * The USB Monitor, inspired by Dave Harding's USBMon.
- *
- * This is a binary format reader.
- *
- * Copyright (C) 2006 Paolo Abeni (paolo.abeni@email.it)
- * Copyright (C) 2006,2007 Pete Zaitcev (zaitcev@redhat.com)
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/fs.h>
-#include <linux/cdev.h>
-#include <linux/export.h>
-#include <linux/usb.h>
-#include <linux/poll.h>
-#include <linux/compat.h>
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-
-#include <asm/uaccess.h>
-
-#include "usb_mon.h"
-
-/*
- * Defined by USB 2.0 clause 9.3, table 9.2.
- */
-#define SETUP_LEN  8
-
-/* ioctl macros */
-#define MON_IOC_MAGIC 0x92
-
-#define MON_IOCQ_URB_LEN _IO(MON_IOC_MAGIC, 1)
-/* #2 used to be MON_IOCX_URB, removed before it got into Linus tree */
-#define MON_IOCG_STATS _IOR(MON_IOC_MAGIC, 3, struct mon_bin_stats)
-#define MON_IOCT_RING_SIZE _IO(MON_IOC_MAGIC, 4)
-#define MON_IOCQ_RING_SIZE _IO(MON_IOC_MAGIC, 5)
-#define MON_IOCX_GET   _IOW(MON_IOC_MAGIC, 6, struct mon_bin_get)
-#define MON_IOCX_MFETCH _IOWR(MON_IOC_MAGIC, 7, struct mon_bin_mfetch)
-#define MON_IOCH_MFLUSH _IO(MON_IOC_MAGIC, 8)
-/* #9 was MON_IOCT_SETAPI */
-#define MON_IOCX_GETX   _IOW(MON_IOC_MAGIC, 10, struct mon_bin_get)
-
-#ifdef CONFIG_COMPAT
-#define MON_IOCX_GET32 _IOW(MON_IOC_MAGIC, 6, struct mon_bin_get32)
-#define MON_IOCX_MFETCH32 _IOWR(MON_IOC_MAGIC, 7, struct mon_bin_mfetch32)
-#define MON_IOCX_GETX32   _IOW(MON_IOC_MAGIC, 10, struct mon_bin_get32)
-#endif
-
-/*
- * Some architectures have enormous basic pages (16KB for ia64, 64KB for ppc).
- * But it's all right. Just use a simple way to make sure the chunk is never
- * smaller than a page.
- *
- * N.B. An application does not know our chunk size.
- *
- * Woops, get_zeroed_page() returns a single page. I guess we're stuck with
- * page-sized chunks for the time being.
- */
-#define CHUNK_SIZE   PAGE_SIZE
-#define CHUNK_ALIGN(x)   (((x)+CHUNK_SIZE-1) & ~(CHUNK_SIZE-1))
-
-/*
- * The magic limit was calculated so that it allows the monitoring
- * application to pick data once in two ticks. This way, another application,
- * which presumably drives the bus, gets to hog CPU, yet we collect our data.
- * If HZ is 100, a 480 mbit/s bus drives 614 KB every jiffy. USB has an
- * enormous overhead built into the bus protocol, so we need about 1000 KB.
- *
- * This is still too much for most cases, where we just snoop a few
- * descriptor fetches for enumeration. So, the default is a "reasonable"
- * amount for systems with HZ=250 and incomplete bus saturation.
- *
- * XXX What about multi-megabyte URBs which take minutes to transfer?
- */
-#define BUFF_MAX  CHUNK_ALIGN(1200*1024)
-#define BUFF_DFL   CHUNK_ALIGN(300*1024)
-#define BUFF_MIN     CHUNK_ALIGN(8*1024)
-
-/*
- * The per-event API header (2 per URB).
- *
- * This structure is seen in userland as defined by the documentation.
- */
-struct mon_bin_hdr {
-	u64 id;			/* URB ID - from submission to callback */
-	unsigned char type;	/* Same as in text API; extensible. */
-	unsigned char xfer_type;	/* ISO, Intr, Control, Bulk */
-	unsigned char epnum;	/* Endpoint number and transfer direction */
-	unsigned char devnum;	/* Device address */
-	unsigned short busnum;	/* Bus number */
-	char flag_setup;
-	char flag_data;
-	s64 ts_sec;		/* gettimeofday */
-	s32 ts_usec;		/* gettimeofday */
-	int status;
-	unsigned int len_urb;	/* Length of data (submitted or actual) */
-	unsigned int len_cap;	/* Delivered length */
-	union {
-		unsigned char setup[SETUP_LEN];	/* Only for Control S-type */
-		struct iso_rec {
-			int error_count;
-			int numdesc;
-		} iso;
-	} s;
-	int interval;
-	int start_frame;
-	unsigned int xfer_flags;
-	unsigned int ndesc;	/* Actual number of ISO descriptors */
-};
-
-/*
- * ISO vector, packed into the head of data stream.
- * This has to take 16 bytes to make sure that the end of buffer
- * wrap is not happening in the middle of a descriptor.
- */
-struct mon_bin_isodesc {
-	int          iso_status;
-	unsigned int iso_off;
-	unsigned int iso_len;
-	u32 _pad;
-};
-
-/* per file statistic */
-struct mon_bin_stats {
-	u32 queued;
-	u32 dropped;
-};
-
-struct mon_bin_get {
-	struct mon_bin_hdr __user *hdr;	/* Can be 48 bytes or 64. */
-	void __user *data;
-	size_t alloc;		/* Length of data (can be zero) */
-};
-
-struct mon_bin_mfetch {
-	u32 __user *offvec;	/* Vector of events fetched */
-	u32 nfetch;		/* Number of events to fetch (out: fetched) */
-	u32 nflush;		/* Number of events to flush */
-};
-
-#ifdef CONFIG_COMPAT
-struct mon_bin_get32 {
-	u32 hdr32;
-	u32 data32;
-	u32 alloc32;
-};
-
-struct mon_bin_mfetch32 {
-        u32 offvec32;
-        u32 nfetch32;
-        u32 nflush32;
-};
-#endif
-
-/* Having these two values same prevents wrapping of the mon_bin_hdr */
-#define PKT_ALIGN   64
-#define PKT_SIZE    64
-
-#define PKT_SZ_API0 48	/* API 0 (2.6.20) size */
-#define PKT_SZ_API1 64	/* API 1 size: extra fields */
-
-#define ISODESC_MAX   128	/* Same number as usbfs allows, 2048 bytes. */
-
-/* max number of USB bus supported */
-#define MON_BIN_MAX_MINOR 128
-
-/*
- * The buffer: map of used pages.
- */
-struct mon_pgmap {
-	struct page *pg;
-	unsigned char *ptr;	/* XXX just use page_to_virt everywhere? */
-};
-
-/*
- * This gets associated with an open file struct.
- */
-struct mon_reader_bin {
-	/* The buffer: one per open. */
-	spinlock_t b_lock;		/* Protect b_cnt, b_in */
-	unsigned int b_size;		/* Current size of the buffer - bytes */
-	unsigned int b_cnt;		/* Bytes used */
-	unsigned int b_in, b_out;	/* Offsets into buffer - bytes */
-	unsigned int b_read;		/* Amount of read data in curr. pkt. */
-	struct mon_pgmap *b_vec;	/* The map array */
-	wait_queue_head_t b_wait;	/* Wait for data here */
-
-	struct mutex fetch_lock;	/* Protect b_read, b_out */
-	int mmap_active;
-
-	/* A list of these is needed for "bus 0". Some time later. */
-	struct mon_reader r;
-
-	/* Stats */
-	unsigned int cnt_lost;
-};
-
-static inline struct mon_bin_hdr *MON_OFF2HDR(const struct mon_reader_bin *rp,
-    unsigned int offset)
-{
-	return (struct mon_bin_hdr *)
-	    (rp->b_vec[offset / CHUNK_SIZE].ptr + offset % CHUNK_SIZE);
-}
-
-#define MON_RING_EMPTY(rp)	((rp)->b_cnt == 0)
-
-static unsigned char xfer_to_pipe[4] = {
-	PIPE_CONTROL, PIPE_ISOCHRONOUS, PIPE_BULK, PIPE_INTERRUPT
-};
-
-static struct class *mon_bin_class;
-static dev_t mon_bin_dev0;
-static struct cdev mon_bin_cdev;
-
-static void mon_buff_area_fill(const struct mon_reader_bin *rp,
-    unsigned int offset, unsigned int size);
-static int mon_bin_wait_event(struct file *file, struct mon_reader_bin *rp);
-static int mon_alloc_buff(struct mon_pgmap *map, int npages);
-static void mon_free_buff(struct mon_pgmap *map, int npages);
-
-/*
- * This is a "chunked memcpy". It does not manipulate any counters.
- */
-static unsigned int mon_copy_to_buff(const struct mon_reader_bin *this,
-    unsigned int off, const unsigned char *from, unsigned int length)
-{
-	unsigned int step_len;
-	unsigned char *buf;
-	unsigned int in_page;
-
-	while (length) {
-		/*
-		 * Determine step_len.
-		 */
-		step_len = length;
-		in_page = CHUNK_SIZE - (off & (CHUNK_SIZE-1));
-		if (in_page < step_len)
-			step_len = in_page;
-
-		/*
-		 * Copy data and advance pointers.
-		 */
-		buf = this->b_vec[off / CHUNK_SIZE].ptr + off % CHUNK_SIZE;
-		memcpy(buf, from, step_len);
-		if ((off += step_len) >= this->b_size) off = 0;
-		from += step_len;
-		length -= step_len;
-	}
-	return off;
-}
-
-/*
- * This is a little worse than the above because it's "chunked copy_to_user".
- * The return value is an error code, not an offset.
- */
-static int copy_from_buf(const struct mon_reader_bin *this, unsigned int off,
-    char __user *to, int length)
-{
-	unsigned int step_len;
-	unsigned char *buf;
-	unsigned int in_page;
-
-	while (length) {
-		/*
-		 * Determine step_len.
-		 */
-		step_len = length;
-		in_page = CHUNK_SIZE - (off & (CHUNK_SIZE-1));
-		if (in_page < step_len)
-			step_len = in_page;
-
-		/*
-		 * Copy data and advance pointers.
-		 */
-		buf = this->b_vec[off / CHUNK_SIZE].ptr + off % CHUNK_SIZE;
-		if (copy_to_user(to, buf, step_len))
-			return -EINVAL;
-		if ((off += step_len) >= this->b_size) off = 0;
-		to += step_len;
-		length -= step_len;
-	}
-	return 0;
-}
-
-/*
- * Allocate an (aligned) area in the buffer.
- * This is called under b_lock.
- * Returns ~0 on failure.
- */
-static unsigned int mon_buff_area_alloc(struct mon_reader_bin *rp,
-    unsigned int size)
-{
-	unsigned int offset;
-
-	size = (size + PKT_ALIGN-1) & ~(PKT_ALIGN-1);
-	if (rp->b_cnt + size > rp->b_size)
-		return ~0;
-	offset = rp->b_in;
-	rp->b_cnt += size;
-	if ((rp->b_in += size) >= rp->b_size)
-		rp->b_in -= rp->b_size;
-	return offset;
-}
-
-/*
- * This is the same thing as mon_buff_area_alloc, only it does not allow
- * buffers to wrap. This is needed by applications which pass references
- * into mmap-ed buffers up their stacks (libpcap can do that).
- *
- * Currently, we always have the header stuck with the data, although
- * it is not strictly speaking necessary.
- *
- * When a buffer would wrap, we place a filler packet to mark the space.
- */
-static unsigned int mon_buff_area_alloc_contiguous(struct mon_reader_bin *rp,
-    unsigned int size)
-{
-	unsigned int offset;
-	unsigned int fill_size;
-
-	size = (size + PKT_ALIGN-1) & ~(PKT_ALIGN-1);
-	if (rp->b_cnt + size > rp->b_size)
-		return ~0;
-	if (rp->b_in + size > rp->b_size) {
-		/*
-		 * This would wrap. Find if we still have space after
-		 * skipping to the end of the buffer. If we do, place
-		 * a filler packet and allocate a new packet.
-		 */
-		fill_size = rp->b_size - rp->b_in;
-		if (rp->b_cnt + size + fill_size > rp->b_size)
-			return ~0;
-		mon_buff_area_fill(rp, rp->b_in, fill_size);
-
-		offset = 0;
-		rp->b_in = size;
-		rp->b_cnt += size + fill_size;
-	} else if (rp->b_in + size == rp->b_size) {
-		offset = rp->b_in;
-		rp->b_in = 0;
-		rp->b_cnt += size;
-	} else {
-		offset = rp->b_in;
-		rp->b_in += size;
-		rp->b_cnt += size;
-	}
-	return offset;
-}
-
-/*
- * Return a few (kilo-)bytes to the head of the buffer.
- * This is used if a data fetch fails.
- */
-static void mon_buff_area_shrink(struct mon_reader_bin *rp, unsigned int size)
-{
-
-	/* size &= ~(PKT_ALIGN-1);  -- we're called with aligned size */
-	rp->b_cnt -= size;
-	if (rp->b_in < size)
-		rp->b_in += rp->b_size;
-	rp->b_in -= size;
-}
-
-/*
- * This has to be called under both b_lock and fetch_lock, because
- * it accesses both b_cnt and b_out.
- */
-static void mon_buff_area_free(struct mon_reader_bin *rp, unsigned int size)
-{
-
-	size = (size + PKT_ALIGN-1) & ~(PKT_ALIGN-1);
-	rp->b_cnt -= size;
-	if ((rp->b_out += size) >= rp->b_size)
-		rp->b_out -= rp->b_size;
-}
-
-static void mon_buff_area_fill(const struct mon_reader_bin *rp,
-    unsigned int offset, unsigned int size)
-{
-	struct mon_bin_hdr *ep;
-
-	ep = MON_OFF2HDR(rp, offset);
-	memset(ep, 0, PKT_SIZE);
-	ep->type = '@';
-	ep->len_cap = size - PKT_SIZE;
-}
-
-static inline char mon_bin_get_setup(unsigned char *setupb,
-    const struct urb *urb, char ev_type)
-{
-
-	if (urb->setup_packet == NULL)
-		return 'Z';
-	memcpy(setupb, urb->setup_packet, SETUP_LEN);
-	return 0;
-}
-
-static unsigned int mon_bin_get_data(const struct mon_reader_bin *rp,
-    unsigned int offset, struct urb *urb, unsigned int length,
-    char *flag)
-{
-	int i;
-	struct scatterlist *sg;
-	unsigned int this_len;
-
-	*flag = 0;
-	if (urb->num_sgs == 0) {
-		if (urb->transfer_buffer == NULL) {
-			*flag = 'Z';
-			return length;
-		}
-		mon_copy_to_buff(rp, offset, urb->transfer_buffer, length);
-		length = 0;
-
-	} else {
-		/* If IOMMU coalescing occurred, we cannot trust sg_page */
-		if (urb->transfer_flags & URB_DMA_SG_COMBINED) {
-			*flag = 'D';
-			return length;
-		}
-
-		/* Copy up to the first non-addressable segment */
-		for_each_sg(urb->sg, sg, urb->num_sgs, i) {
-			if (length == 0 || PageHighMem(sg_page(sg)))
-				break;
-			this_len = min_t(unsigned int, sg->length, length);
-			offset = mon_copy_to_buff(rp, offset, sg_virt(sg),
-					this_len);
-			length -= this_len;
-		}
-		if (i == 0)
-			*flag = 'D';
-	}
-
-	return length;
-}
-
-/*
- * This is the look-ahead pass in case of 'C Zi', when actual_length cannot
- * be used to determine the length of the whole contiguous buffer.
- */
-static unsigned int mon_bin_collate_isodesc(const struct mon_reader_bin *rp,
-    struct urb *urb, unsigned int ndesc)
-{
-	struct usb_iso_packet_descriptor *fp;
-	unsigned int length;
-
-	length = 0;
-	fp = urb->iso_frame_desc;
-	while (ndesc-- != 0) {
-		if (fp->actual_length != 0) {
-			if (fp->offset + fp->actual_length > length)
-				length = fp->offset + fp->actual_length;
-		}
-		fp++;
-	}
-	return length;
-}
-
-static void mon_bin_get_isodesc(const struct mon_reader_bin *rp,
-    unsigned int offset, struct urb *urb, char ev_type, unsigned int ndesc)
-{
-	struct mon_bin_isodesc *dp;
-	struct usb_iso_packet_descriptor *fp;
-
-	fp = urb->iso_frame_desc;
-	while (ndesc-- != 0) {
-		dp = (struct mon_bin_isodesc *)
-		    (rp->b_vec[offset / CHUNK_SIZE].ptr + offset % CHUNK_SIZE);
-		dp->iso_status = fp->status;
-		dp->iso_off = fp->offset;
-		dp->iso_len = (ev_type == 'S') ? fp->length : fp->actual_length;
-		dp->_pad = 0;
-		if ((offset += sizeof(struct mon_bin_isodesc)) >= rp->b_size)
-			offset = 0;
-		fp++;
-	}
-}
-
-static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb,
-    char ev_type, int status)
-{
-	const struct usb_endpoint_descriptor *epd = &urb->ep->desc;
-	struct timeval ts;
-	unsigned long flags;
-	unsigned int urb_length;
-	unsigned int offset;
-	unsigned int length;
-	unsigned int delta;
-	unsigned int ndesc, lendesc;
-	unsigned char dir;
-	struct mon_bin_hdr *ep;
-	char data_tag = 0;
-
-	do_gettimeofday(&ts);
-
-	spin_lock_irqsave(&rp->b_lock, flags);
-
-	/*
-	 * Find the maximum allowable length, then allocate space.
-	 */
-	urb_length = (ev_type == 'S') ?
-	    urb->transfer_buffer_length : urb->actual_length;
-	length = urb_length;
-
-	if (usb_endpoint_xfer_isoc(epd)) {
-		if (urb->number_of_packets < 0) {
-			ndesc = 0;
-		} else if (urb->number_of_packets >= ISODESC_MAX) {
-			ndesc = ISODESC_MAX;
-		} else {
-			ndesc = urb->number_of_packets;
-		}
-		if (ev_type == 'C' && usb_urb_dir_in(urb))
-			length = mon_bin_collate_isodesc(rp, urb, ndesc);
-	} else {
-		ndesc = 0;
-	}
-	lendesc = ndesc*sizeof(struct mon_bin_isodesc);
-
-	/* not an issue unless there's a subtle bug in a HCD somewhere */
-	if (length >= urb->transfer_buffer_length)
-		length = urb->transfer_buffer_length;
-
-	if (length >= rp->b_size/5)
-		length = rp->b_size/5;
-
-	if (usb_urb_dir_in(urb)) {
-		if (ev_type == 'S') {
-			length = 0;
-			data_tag = '<';
-		}
-		/* Cannot rely on endpoint number in case of control ep.0 */
-		dir = USB_DIR_IN;
-	} else {
-		if (ev_type == 'C') {
-			length = 0;
-			data_tag = '>';
-		}
-		dir = 0;
-	}
-
-	if (rp->mmap_active) {
-		offset = mon_buff_area_alloc_contiguous(rp,
-						 length + PKT_SIZE + lendesc);
-	} else {
-		offset = mon_buff_area_alloc(rp, length + PKT_SIZE + lendesc);
-	}
-	if (offset == ~0) {
-		rp->cnt_lost++;
-		spin_unlock_irqrestore(&rp->b_lock, flags);
-		return;
-	}
-
-	ep = MON_OFF2HDR(rp, offset);
-	if ((offset += PKT_SIZE) >= rp->b_size) offset = 0;
-
-	/*
-	 * Fill the allocated area.
-	 */
-	memset(ep, 0, PKT_SIZE);
-	ep->type = ev_type;
-	ep->xfer_type = xfer_to_pipe[usb_endpoint_type(epd)];
-	ep->epnum = dir | usb_endpoint_num(epd);
-	ep->devnum = urb->dev->devnum;
-	ep->busnum = urb->dev->bus->busnum;
-	ep->id = (unsigned long) urb;
-	ep->ts_sec = ts.tv_sec;
-	ep->ts_usec = ts.tv_usec;
-	ep->status = status;
-	ep->len_urb = urb_length;
-	ep->len_cap = length + lendesc;
-	ep->xfer_flags = urb->transfer_flags;
-
-	if (usb_endpoint_xfer_int(epd)) {
-		ep->interval = urb->interval;
-	} else if (usb_endpoint_xfer_isoc(epd)) {
-		ep->interval = urb->interval;
-		ep->start_frame = urb->start_frame;
-		ep->s.iso.error_count = urb->error_count;
-		ep->s.iso.numdesc = urb->number_of_packets;
-	}
-
-	if (usb_endpoint_xfer_control(epd) && ev_type == 'S') {
-		ep->flag_setup = mon_bin_get_setup(ep->s.setup, urb, ev_type);
-	} else {
-		ep->flag_setup = '-';
-	}
-
-	if (ndesc != 0) {
-		ep->ndesc = ndesc;
-		mon_bin_get_isodesc(rp, offset, urb, ev_type, ndesc);
-		if ((offset += lendesc) >= rp->b_size)
-			offset -= rp->b_size;
-	}
-
-	if (length != 0) {
-		length = mon_bin_get_data(rp, offset, urb, length,
-				&ep->flag_data);
-		if (length > 0) {
-			delta = (ep->len_cap + PKT_ALIGN-1) & ~(PKT_ALIGN-1);
-			ep->len_cap -= length;
-			delta -= (ep->len_cap + PKT_ALIGN-1) & ~(PKT_ALIGN-1);
-			mon_buff_area_shrink(rp, delta);
-		}
-	} else {
-		ep->flag_data = data_tag;
-	}
-
-	spin_unlock_irqrestore(&rp->b_lock, flags);
-
-	wake_up(&rp->b_wait);
-}
-
-static void mon_bin_submit(void *data, struct urb *urb)
-{
-	struct mon_reader_bin *rp = data;
-	mon_bin_event(rp, urb, 'S', -EINPROGRESS);
-}
-
-static void mon_bin_complete(void *data, struct urb *urb, int status)
-{
-	struct mon_reader_bin *rp = data;
-	mon_bin_event(rp, urb, 'C', status);
-}
-
-static void mon_bin_error(void *data, struct urb *urb, int error)
-{
-	struct mon_reader_bin *rp = data;
-	struct timeval ts;
-	unsigned long flags;
-	unsigned int offset;
-	struct mon_bin_hdr *ep;
-
-	do_gettimeofday(&ts);
-
-	spin_lock_irqsave(&rp->b_lock, flags);
-
-	offset = mon_buff_area_alloc(rp, PKT_SIZE);
-	if (offset == ~0) {
-		/* Not incrementing cnt_lost. Just because. */
-		spin_unlock_irqrestore(&rp->b_lock, flags);
-		return;
-	}
-
-	ep = MON_OFF2HDR(rp, offset);
-
-	memset(ep, 0, PKT_SIZE);
-	ep->type = 'E';
-	ep->xfer_type = xfer_to_pipe[usb_endpoint_type(&urb->ep->desc)];
-	ep->epnum = usb_urb_dir_in(urb) ? USB_DIR_IN : 0;
-	ep->epnum |= usb_endpoint_num(&urb->ep->desc);
-	ep->devnum = urb->dev->devnum;
-	ep->busnum = urb->dev->bus->busnum;
-	ep->id = (unsigned long) urb;
-	ep->ts_sec = ts.tv_sec;
-	ep->ts_usec = ts.tv_usec;
-	ep->status = error;
-
-	ep->flag_setup = '-';
-	ep->flag_data = 'E';
-
-	spin_unlock_irqrestore(&rp->b_lock, flags);
-
-	wake_up(&rp->b_wait);
-}
-
-static int mon_bin_open(struct inode *inode, struct file *file)
-{
-	struct mon_bus *mbus;
-	struct mon_reader_bin *rp;
-	size_t size;
-	int rc;
-
-	mutex_lock(&mon_lock);
-	if ((mbus = mon_bus_lookup(iminor(inode))) == NULL) {
-		mutex_unlock(&mon_lock);
-		return -ENODEV;
-	}
-	if (mbus != &mon_bus0 && mbus->u_bus == NULL) {
-		printk(KERN_ERR TAG ": consistency error on open\n");
-		mutex_unlock(&mon_lock);
-		return -ENODEV;
-	}
-
-	rp = kzalloc(sizeof(struct mon_reader_bin), GFP_KERNEL);
-	if (rp == NULL) {
-		rc = -ENOMEM;
-		goto err_alloc;
-	}
-	spin_lock_init(&rp->b_lock);
-	init_waitqueue_head(&rp->b_wait);
-	mutex_init(&rp->fetch_lock);
-	rp->b_size = BUFF_DFL;
-
-	size = sizeof(struct mon_pgmap) * (rp->b_size/CHUNK_SIZE);
-	if ((rp->b_vec = kzalloc(size, GFP_KERNEL)) == NULL) {
-		rc = -ENOMEM;
-		goto err_allocvec;
-	}
-
-	if ((rc = mon_alloc_buff(rp->b_vec, rp->b_size/CHUNK_SIZE)) < 0)
-		goto err_allocbuff;
-
-	rp->r.m_bus = mbus;
-	rp->r.r_data = rp;
-	rp->r.rnf_submit = mon_bin_submit;
-	rp->r.rnf_error = mon_bin_error;
-	rp->r.rnf_complete = mon_bin_complete;
-
-	mon_reader_add(mbus, &rp->r);
-
-	file->private_data = rp;
-	mutex_unlock(&mon_lock);
-	return 0;
-
-err_allocbuff:
-	kfree(rp->b_vec);
-err_allocvec:
-	kfree(rp);
-err_alloc:
-	mutex_unlock(&mon_lock);
-	return rc;
-}
-
-/*
- * Extract an event from buffer and copy it to user space.
- * Wait if there is no event ready.
- * Returns zero or error.
- */
-static int mon_bin_get_event(struct file *file, struct mon_reader_bin *rp,
-    struct mon_bin_hdr __user *hdr, unsigned int hdrbytes,
-    void __user *data, unsigned int nbytes)
-{
-	unsigned long flags;
-	struct mon_bin_hdr *ep;
-	size_t step_len;
-	unsigned int offset;
-	int rc;
-
-	mutex_lock(&rp->fetch_lock);
-
-	if ((rc = mon_bin_wait_event(file, rp)) < 0) {
-		mutex_unlock(&rp->fetch_lock);
-		return rc;
-	}
-
-	ep = MON_OFF2HDR(rp, rp->b_out);
-
-	if (copy_to_user(hdr, ep, hdrbytes)) {
-		mutex_unlock(&rp->fetch_lock);
-		return -EFAULT;
-	}
-
-	step_len = min(ep->len_cap, nbytes);
-	if ((offset = rp->b_out + PKT_SIZE) >= rp->b_size) offset = 0;
-
-	if (copy_from_buf(rp, offset, data, step_len)) {
-		mutex_unlock(&rp->fetch_lock);
-		return -EFAULT;
-	}
-
-	spin_lock_irqsave(&rp->b_lock, flags);
-	mon_buff_area_free(rp, PKT_SIZE + ep->len_cap);
-	spin_unlock_irqrestore(&rp->b_lock, flags);
-	rp->b_read = 0;
-
-	mutex_unlock(&rp->fetch_lock);
-	return 0;
-}
-
-static int mon_bin_release(struct inode *inode, struct file *file)
-{
-	struct mon_reader_bin *rp = file->private_data;
-	struct mon_bus* mbus = rp->r.m_bus;
-
-	mutex_lock(&mon_lock);
-
-	if (mbus->nreaders <= 0) {
-		printk(KERN_ERR TAG ": consistency error on close\n");
-		mutex_unlock(&mon_lock);
-		return 0;
-	}
-	mon_reader_del(mbus, &rp->r);
-
-	mon_free_buff(rp->b_vec, rp->b_size/CHUNK_SIZE);
-	kfree(rp->b_vec);
-	kfree(rp);
-
-	mutex_unlock(&mon_lock);
-	return 0;
-}
-
-static ssize_t mon_bin_read(struct file *file, char __user *buf,
-    size_t nbytes, loff_t *ppos)
-{
-	struct mon_reader_bin *rp = file->private_data;
-	unsigned int hdrbytes = PKT_SZ_API0;
-	unsigned long flags;
-	struct mon_bin_hdr *ep;
-	unsigned int offset;
-	size_t step_len;
-	char *ptr;
-	ssize_t done = 0;
-	int rc;
-
-	mutex_lock(&rp->fetch_lock);
-
-	if ((rc = mon_bin_wait_event(file, rp)) < 0) {
-		mutex_unlock(&rp->fetch_lock);
-		return rc;
-	}
-
-	ep = MON_OFF2HDR(rp, rp->b_out);
-
-	if (rp->b_read < hdrbytes) {
-		step_len = min(nbytes, (size_t)(hdrbytes - rp->b_read));
-		ptr = ((char *)ep) + rp->b_read;
-		if (step_len && copy_to_user(buf, ptr, step_len)) {
-			mutex_unlock(&rp->fetch_lock);
-			return -EFAULT;
-		}
-		nbytes -= step_len;
-		buf += step_len;
-		rp->b_read += step_len;
-		done += step_len;
-	}
-
-	if (rp->b_read >= hdrbytes) {
-		step_len = ep->len_cap;
-		step_len -= rp->b_read - hdrbytes;
-		if (step_len > nbytes)
-			step_len = nbytes;
-		offset = rp->b_out + PKT_SIZE;
-		offset += rp->b_read - hdrbytes;
-		if (offset >= rp->b_size)
-			offset -= rp->b_size;
-		if (copy_from_buf(rp, offset, buf, step_len)) {
-			mutex_unlock(&rp->fetch_lock);
-			return -EFAULT;
-		}
-		nbytes -= step_len;
-		buf += step_len;
-		rp->b_read += step_len;
-		done += step_len;
-	}
-
-	/*
-	 * Check if whole packet was read, and if so, jump to the next one.
-	 */
-	if (rp->b_read >= hdrbytes + ep->len_cap) {
-		spin_lock_irqsave(&rp->b_lock, flags);
-		mon_buff_area_free(rp, PKT_SIZE + ep->len_cap);
-		spin_unlock_irqrestore(&rp->b_lock, flags);
-		rp->b_read = 0;
-	}
-
-	mutex_unlock(&rp->fetch_lock);
-	return done;
-}
-
-/*
- * Remove at most nevents from chunked buffer.
- * Returns the number of removed events.
- */
-static int mon_bin_flush(struct mon_reader_bin *rp, unsigned nevents)
-{
-	unsigned long flags;
-	struct mon_bin_hdr *ep;
-	int i;
-
-	mutex_lock(&rp->fetch_lock);
-	spin_lock_irqsave(&rp->b_lock, flags);
-	for (i = 0; i < nevents; ++i) {
-		if (MON_RING_EMPTY(rp))
-			break;
-
-		ep = MON_OFF2HDR(rp, rp->b_out);
-		mon_buff_area_free(rp, PKT_SIZE + ep->len_cap);
-	}
-	spin_unlock_irqrestore(&rp->b_lock, flags);
-	rp->b_read = 0;
-	mutex_unlock(&rp->fetch_lock);
-	return i;
-}
-
-/*
- * Fetch at most max event offsets into the buffer and put them into vec.
- * The events are usually freed later with mon_bin_flush.
- * Return the effective number of events fetched.
- */
-static int mon_bin_fetch(struct file *file, struct mon_reader_bin *rp,
-    u32 __user *vec, unsigned int max)
-{
-	unsigned int cur_out;
-	unsigned int bytes, avail;
-	unsigned int size;
-	unsigned int nevents;
-	struct mon_bin_hdr *ep;
-	unsigned long flags;
-	int rc;
-
-	mutex_lock(&rp->fetch_lock);
-
-	if ((rc = mon_bin_wait_event(file, rp)) < 0) {
-		mutex_unlock(&rp->fetch_lock);
-		return rc;
-	}
-
-	spin_lock_irqsave(&rp->b_lock, flags);
-	avail = rp->b_cnt;
-	spin_unlock_irqrestore(&rp->b_lock, flags);
-
-	cur_out = rp->b_out;
-	nevents = 0;
-	bytes = 0;
-	while (bytes < avail) {
-		if (nevents >= max)
-			break;
-
-		ep = MON_OFF2HDR(rp, cur_out);
-		if (put_user(cur_out, &vec[nevents])) {
-			mutex_unlock(&rp->fetch_lock);
-			return -EFAULT;
-		}
-
-		nevents++;
-		size = ep->len_cap + PKT_SIZE;
-		size = (size + PKT_ALIGN-1) & ~(PKT_ALIGN-1);
-		if ((cur_out += size) >= rp->b_size)
-			cur_out -= rp->b_size;
-		bytes += size;
-	}
-
-	mutex_unlock(&rp->fetch_lock);
-	return nevents;
-}
-
-/*
- * Count events. This is almost the same as the above mon_bin_fetch,
- * only we do not store offsets into user vector, and we have no limit.
- */
-static int mon_bin_queued(struct mon_reader_bin *rp)
-{
-	unsigned int cur_out;
-	unsigned int bytes, avail;
-	unsigned int size;
-	unsigned int nevents;
-	struct mon_bin_hdr *ep;
-	unsigned long flags;
-
-	mutex_lock(&rp->fetch_lock);
-
-	spin_lock_irqsave(&rp->b_lock, flags);
-	avail = rp->b_cnt;
-	spin_unlock_irqrestore(&rp->b_lock, flags);
-
-	cur_out = rp->b_out;
-	nevents = 0;
-	bytes = 0;
-	while (bytes < avail) {
-		ep = MON_OFF2HDR(rp, cur_out);
-
-		nevents++;
-		size = ep->len_cap + PKT_SIZE;
-		size = (size + PKT_ALIGN-1) & ~(PKT_ALIGN-1);
-		if ((cur_out += size) >= rp->b_size)
-			cur_out -= rp->b_size;
-		bytes += size;
-	}
-
-	mutex_unlock(&rp->fetch_lock);
-	return nevents;
-}
-
-/*
- */
-static long mon_bin_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct mon_reader_bin *rp = file->private_data;
-	// struct mon_bus* mbus = rp->r.m_bus;
-	int ret = 0;
-	struct mon_bin_hdr *ep;
-	unsigned long flags;
-
-	switch (cmd) {
-
-	case MON_IOCQ_URB_LEN:
-		/*
-		 * N.B. This only returns the size of data, without the header.
-		 */
-		spin_lock_irqsave(&rp->b_lock, flags);
-		if (!MON_RING_EMPTY(rp)) {
-			ep = MON_OFF2HDR(rp, rp->b_out);
-			ret = ep->len_cap;
-		}
-		spin_unlock_irqrestore(&rp->b_lock, flags);
-		break;
-
-	case MON_IOCQ_RING_SIZE:
-		ret = rp->b_size;
-		break;
-
-	case MON_IOCT_RING_SIZE:
-		/*
-		 * Changing the buffer size will flush it's contents; the new
-		 * buffer is allocated before releasing the old one to be sure
-		 * the device will stay functional also in case of memory
-		 * pressure.
-		 */
-		{
-		int size;
-		struct mon_pgmap *vec;
-
-		if (arg < BUFF_MIN || arg > BUFF_MAX)
-			return -EINVAL;
-
-		size = CHUNK_ALIGN(arg);
-		if ((vec = kzalloc(sizeof(struct mon_pgmap) * (size/CHUNK_SIZE),
-		    GFP_KERNEL)) == NULL) {
-			ret = -ENOMEM;
-			break;
-		}
-
-		ret = mon_alloc_buff(vec, size/CHUNK_SIZE);
-		if (ret < 0) {
-			kfree(vec);
-			break;
-		}
-
-		mutex_lock(&rp->fetch_lock);
-		spin_lock_irqsave(&rp->b_lock, flags);
-		mon_free_buff(rp->b_vec, rp->b_size/CHUNK_SIZE);
-		kfree(rp->b_vec);
-		rp->b_vec  = vec;
-		rp->b_size = size;
-		rp->b_read = rp->b_in = rp->b_out = rp->b_cnt = 0;
-		rp->cnt_lost = 0;
-		spin_unlock_irqrestore(&rp->b_lock, flags);
-		mutex_unlock(&rp->fetch_lock);
-		}
-		break;
-
-	case MON_IOCH_MFLUSH:
-		ret = mon_bin_flush(rp, arg);
-		break;
-
-	case MON_IOCX_GET:
-	case MON_IOCX_GETX:
-		{
-		struct mon_bin_get getb;
-
-		if (copy_from_user(&getb, (void __user *)arg,
-					    sizeof(struct mon_bin_get)))
-			return -EFAULT;
-
-		if (getb.alloc > 0x10000000)	/* Want to cast to u32 */
-			return -EINVAL;
-		ret = mon_bin_get_event(file, rp, getb.hdr,
-		    (cmd == MON_IOCX_GET)? PKT_SZ_API0: PKT_SZ_API1,
-		    getb.data, (unsigned int)getb.alloc);
-		}
-		break;
-
-	case MON_IOCX_MFETCH:
-		{
-		struct mon_bin_mfetch mfetch;
-		struct mon_bin_mfetch __user *uptr;
-
-		uptr = (struct mon_bin_mfetch __user *)arg;
-
-		if (copy_from_user(&mfetch, uptr, sizeof(mfetch)))
-			return -EFAULT;
-
-		if (mfetch.nflush) {
-			ret = mon_bin_flush(rp, mfetch.nflush);
-			if (ret < 0)
-				return ret;
-			if (put_user(ret, &uptr->nflush))
-				return -EFAULT;
-		}
-		ret = mon_bin_fetch(file, rp, mfetch.offvec, mfetch.nfetch);
-		if (ret < 0)
-			return ret;
-		if (put_user(ret, &uptr->nfetch))
-			return -EFAULT;
-		ret = 0;
-		}
-		break;
-
-	case MON_IOCG_STATS: {
-		struct mon_bin_stats __user *sp;
-		unsigned int nevents;
-		unsigned int ndropped;
-
-		spin_lock_irqsave(&rp->b_lock, flags);
-		ndropped = rp->cnt_lost;
-		rp->cnt_lost = 0;
-		spin_unlock_irqrestore(&rp->b_lock, flags);
-		nevents = mon_bin_queued(rp);
-
-		sp = (struct mon_bin_stats __user *)arg;
-		if (put_user(ndropped, &sp->dropped))
-			return -EFAULT;
-		if (put_user(nevents, &sp->queued))
-			return -EFAULT;
-
-		}
-		break;
-
-	default:
-		return -ENOTTY;
-	}
-
-	return ret;
-}
-
-#ifdef CONFIG_COMPAT
-static long mon_bin_compat_ioctl(struct file *file,
-    unsigned int cmd, unsigned long arg)
-{
-	struct mon_reader_bin *rp = file->private_data;
-	int ret;
-
-	switch (cmd) {
-
-	case MON_IOCX_GET32:
-	case MON_IOCX_GETX32:
-		{
-		struct mon_bin_get32 getb;
-
-		if (copy_from_user(&getb, (void __user *)arg,
-					    sizeof(struct mon_bin_get32)))
-			return -EFAULT;
-
-		ret = mon_bin_get_event(file, rp, compat_ptr(getb.hdr32),
-		    (cmd == MON_IOCX_GET32)? PKT_SZ_API0: PKT_SZ_API1,
-		    compat_ptr(getb.data32), getb.alloc32);
-		if (ret < 0)
-			return ret;
-		}
-		return 0;
-
-	case MON_IOCX_MFETCH32:
-		{
-		struct mon_bin_mfetch32 mfetch;
-		struct mon_bin_mfetch32 __user *uptr;
-
-		uptr = (struct mon_bin_mfetch32 __user *) compat_ptr(arg);
-
-		if (copy_from_user(&mfetch, uptr, sizeof(mfetch)))
-			return -EFAULT;
-
-		if (mfetch.nflush32) {
-			ret = mon_bin_flush(rp, mfetch.nflush32);
-			if (ret < 0)
-				return ret;
-			if (put_user(ret, &uptr->nflush32))
-				return -EFAULT;
-		}
-		ret = mon_bin_fetch(file, rp, compat_ptr(mfetch.offvec32),
-		    mfetch.nfetch32);
-		if (ret < 0)
-			return ret;
-		if (put_user(ret, &uptr->nfetch32))
-			return -EFAULT;
-		}
-		return 0;
-
-	case MON_IOCG_STATS:
-		return mon_bin_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
-
-	case MON_IOCQ_URB_LEN:
-	case MON_IOCQ_RING_SIZE:
-	case MON_IOCT_RING_SIZE:
-	case MON_IOCH_MFLUSH:
-		return mon_bin_ioctl(file, cmd, arg);
-
-	default:
-		;
-	}
-	return -ENOTTY;
-}
-#endif /* CONFIG_COMPAT */
-
-static unsigned int
-mon_bin_poll(struct file *file, struct poll_table_struct *wait)
-{
-	struct mon_reader_bin *rp = file->private_data;
-	unsigned int mask = 0;
-	unsigned long flags;
-
-	if (file->f_mode & FMODE_READ)
-		poll_wait(file, &rp->b_wait, wait);
-
-	spin_lock_irqsave(&rp->b_lock, flags);
-	if (!MON_RING_EMPTY(rp))
-		mask |= POLLIN | POLLRDNORM;    /* readable */
-	spin_unlock_irqrestore(&rp->b_lock, flags);
-	return mask;
-}
-
-/*
- * open and close: just keep track of how many times the device is
- * mapped, to use the proper memory allocation function.
- */
-static void mon_bin_vma_open(struct vm_area_struct *vma)
-{
-	struct mon_reader_bin *rp = vma->vm_private_data;
-	rp->mmap_active++;
-}
-
-static void mon_bin_vma_close(struct vm_area_struct *vma)
-{
-	struct mon_reader_bin *rp = vma->vm_private_data;
-	rp->mmap_active--;
-}
-
-/*
- * Map ring pages to user space.
- */
-static int mon_bin_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
-{
-	struct mon_reader_bin *rp = vma->vm_private_data;
-	unsigned long offset, chunk_idx;
-	struct page *pageptr;
-
-	offset = vmf->pgoff << PAGE_SHIFT;
-	if (offset >= rp->b_size)
-		return VM_FAULT_SIGBUS;
-	chunk_idx = offset / CHUNK_SIZE;
-	pageptr = rp->b_vec[chunk_idx].pg;
-	get_page(pageptr);
-	vmf->page = pageptr;
-	return 0;
-}
-
-static const struct vm_operations_struct mon_bin_vm_ops = {
-	.open =     mon_bin_vma_open,
-	.close =    mon_bin_vma_close,
-	.fault =    mon_bin_vma_fault,
-};
-
-static int mon_bin_mmap(struct file *filp, struct vm_area_struct *vma)
-{
-	/* don't do anything here: "fault" will set up page table entries */
-	vma->vm_ops = &mon_bin_vm_ops;
-	vma->vm_flags |= VM_RESERVED;
-	vma->vm_private_data = filp->private_data;
-	mon_bin_vma_open(vma);
-	return 0;
-}
-
-static const struct file_operations mon_fops_binary = {
-	.owner =	THIS_MODULE,
-	.open =		mon_bin_open,
-	.llseek =	no_llseek,
-	.read =		mon_bin_read,
-	/* .write =	mon_text_write, */
-	.poll =		mon_bin_poll,
-	.unlocked_ioctl = mon_bin_ioctl,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl =	mon_bin_compat_ioctl,
-#endif
-	.release =	mon_bin_release,
-	.mmap =		mon_bin_mmap,
-};
-
-static int mon_bin_wait_event(struct file *file, struct mon_reader_bin *rp)
-{
-	DECLARE_WAITQUEUE(waita, current);
-	unsigned long flags;
-
-	add_wait_queue(&rp->b_wait, &waita);
-	set_current_state(TASK_INTERRUPTIBLE);
-
-	spin_lock_irqsave(&rp->b_lock, flags);
-	while (MON_RING_EMPTY(rp)) {
-		spin_unlock_irqrestore(&rp->b_lock, flags);
-
-		if (file->f_flags & O_NONBLOCK) {
-			set_current_state(TASK_RUNNING);
-			remove_wait_queue(&rp->b_wait, &waita);
-			return -EWOULDBLOCK; /* Same as EAGAIN in Linux */
-		}
-		schedule();
-		if (signal_pending(current)) {
-			remove_wait_queue(&rp->b_wait, &waita);
-			return -EINTR;
-		}
-		set_current_state(TASK_INTERRUPTIBLE);
-
-		spin_lock_irqsave(&rp->b_lock, flags);
-	}
-	spin_unlock_irqrestore(&rp->b_lock, flags);
-
-	set_current_state(TASK_RUNNING);
-	remove_wait_queue(&rp->b_wait, &waita);
-	return 0;
-}
-
-static int mon_alloc_buff(struct mon_pgmap *map, int npages)
-{
-	int n;
-	unsigned long vaddr;
-
-	for (n = 0; n < npages; n++) {
-		vaddr = get_zeroed_page(GFP_KERNEL);
-		if (vaddr == 0) {
-			while (n-- != 0)
-				free_page((unsigned long) map[n].ptr);
-			return -ENOMEM;
-		}
-		map[n].ptr = (unsigned char *) vaddr;
-		map[n].pg = virt_to_page((void *) vaddr);
-	}
-	return 0;
-}
-
-static void mon_free_buff(struct mon_pgmap *map, int npages)
-{
-	int n;
-
-	for (n = 0; n < npages; n++)
-		free_page((unsigned long) map[n].ptr);
-}
-
-int mon_bin_add(struct mon_bus *mbus, const struct usb_bus *ubus)
-{
-	struct device *dev;
-	unsigned minor = ubus? ubus->busnum: 0;
-
-	if (minor >= MON_BIN_MAX_MINOR)
-		return 0;
-
-	dev = device_create(mon_bin_class, ubus ? ubus->controller : NULL,
-			    MKDEV(MAJOR(mon_bin_dev0), minor), NULL,
-			    "usbmon%d", minor);
-	if (IS_ERR(dev))
-		return 0;
-
-	mbus->classdev = dev;
-	return 1;
-}
-
-void mon_bin_del(struct mon_bus *mbus)
-{
-	device_destroy(mon_bin_class, mbus->classdev->devt);
-}
-
-int __init mon_bin_init(void)
-{
-	int rc;
-
-	mon_bin_class = class_create(THIS_MODULE, "usbmon");
-	if (IS_ERR(mon_bin_class)) {
-		rc = PTR_ERR(mon_bin_class);
-		goto err_class;
-	}
-
-	rc = alloc_chrdev_region(&mon_bin_dev0, 0, MON_BIN_MAX_MINOR, "usbmon");
-	if (rc < 0)
-		goto err_dev;
-
-	cdev_init(&mon_bin_cdev, &mon_fops_binary);
-	mon_bin_cdev.owner = THIS_MODULE;
-
-	rc = cdev_add(&mon_bin_cdev, mon_bin_dev0, MON_BIN_MAX_MINOR);
-	if (rc < 0)
-		goto err_add;
-
-	return 0;
-
-err_add:
-	unregister_chrdev_region(mon_bin_dev0, MON_BIN_MAX_MINOR);
-err_dev:
-	class_destroy(mon_bin_class);
-err_class:
-	return rc;
-}
-
-void mon_bin_exit(void)
-{
-	cdev_del(&mon_bin_cdev);
-	unregister_chrdev_region(mon_bin_dev0, MON_BIN_MAX_MINOR);
-	class_destroy(mon_bin_class);
-}