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path: root/drivers/staging/dabusb
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-rw-r--r--drivers/staging/dabusb/Kconfig14
-rw-r--r--drivers/staging/dabusb/Makefile2
-rw-r--r--drivers/staging/dabusb/TODO5
-rw-r--r--drivers/staging/dabusb/dabusb.c914
-rw-r--r--drivers/staging/dabusb/dabusb.h85
5 files changed, 1020 insertions, 0 deletions
diff --git a/drivers/staging/dabusb/Kconfig b/drivers/staging/dabusb/Kconfig
new file mode 100644
index 00000000000..87bdc425d3c
--- /dev/null
+++ b/drivers/staging/dabusb/Kconfig
@@ -0,0 +1,14 @@
+config USB_DABUSB
+ tristate "DABUSB driver"
+ depends on USB
+ ---help---
+ A Digital Audio Broadcasting (DAB) Receiver for USB and Linux
+ brought to you by the DAB-Team
+ <http://wwwbode.cs.tum.edu/Par/arch/dab/>. This driver can be taken
+ as an example for URB-based bulk, control, and isochronous
+ transactions. URB's are explained in
+ <Documentation/usb/URB.txt>.
+
+ To compile this driver as a module, choose M here: the
+ module will be called dabusb.
+
diff --git a/drivers/staging/dabusb/Makefile b/drivers/staging/dabusb/Makefile
new file mode 100644
index 00000000000..2ff2f228e5f
--- /dev/null
+++ b/drivers/staging/dabusb/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_USB_DABUSB) += dabusb.o
+
diff --git a/drivers/staging/dabusb/TODO b/drivers/staging/dabusb/TODO
new file mode 100644
index 00000000000..f9c0314ea0c
--- /dev/null
+++ b/drivers/staging/dabusb/TODO
@@ -0,0 +1,5 @@
+This is a driver for an experimental sample developed in 2003. The driver
+never supported any commercial product, nor had any known user.
+If nobody takes care on it, the driver will be removed for 2.6.39.
+
+Please send patches to linux-media@vger.kernel.org
diff --git a/drivers/staging/dabusb/dabusb.c b/drivers/staging/dabusb/dabusb.c
new file mode 100644
index 00000000000..f3e25e91366
--- /dev/null
+++ b/drivers/staging/dabusb/dabusb.c
@@ -0,0 +1,914 @@
+/*****************************************************************************/
+
+/*
+ * dabusb.c -- dab usb driver.
+ *
+ * Copyright (C) 1999 Deti Fliegl (deti@fliegl.de)
+ *
+ * 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 of the License, 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.
+ *
+ *
+ *
+ * $Id: dabusb.c,v 1.54 2000/07/24 21:39:39 deti Exp $
+ *
+ */
+
+/*****************************************************************************/
+
+#include <linux/module.h>
+#include <linux/socket.h>
+#include <linux/list.h>
+#include <linux/vmalloc.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <asm/uaccess.h>
+#include <asm/atomic.h>
+#include <linux/delay.h>
+#include <linux/usb.h>
+#include <linux/mutex.h>
+#include <linux/firmware.h>
+#include <linux/ihex.h>
+
+#include "dabusb.h"
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "v1.54"
+#define DRIVER_AUTHOR "Deti Fliegl, deti@fliegl.de"
+#define DRIVER_DESC "DAB-USB Interface Driver for Linux (c)1999"
+
+/* --------------------------------------------------------------------- */
+
+#ifdef CONFIG_USB_DYNAMIC_MINORS
+#define NRDABUSB 256
+#else
+#define NRDABUSB 4
+#endif
+
+/*-------------------------------------------------------------------*/
+
+static dabusb_t dabusb[NRDABUSB];
+static int buffers = 256;
+static struct usb_driver dabusb_driver;
+
+/*-------------------------------------------------------------------*/
+
+static int dabusb_add_buf_tail (pdabusb_t s, struct list_head *dst, struct list_head *src)
+{
+ unsigned long flags;
+ struct list_head *tmp;
+ int ret = 0;
+
+ spin_lock_irqsave (&s->lock, flags);
+
+ if (list_empty (src)) {
+ // no elements in source buffer
+ ret = -1;
+ goto err;
+ }
+ tmp = src->next;
+ list_move_tail (tmp, dst);
+
+ err: spin_unlock_irqrestore (&s->lock, flags);
+ return ret;
+}
+/*-------------------------------------------------------------------*/
+#ifdef DEBUG
+static void dump_urb (struct urb *urb)
+{
+ dbg("urb :%p", urb);
+ dbg("dev :%p", urb->dev);
+ dbg("pipe :%08X", urb->pipe);
+ dbg("status :%d", urb->status);
+ dbg("transfer_flags :%08X", urb->transfer_flags);
+ dbg("transfer_buffer :%p", urb->transfer_buffer);
+ dbg("transfer_buffer_length:%d", urb->transfer_buffer_length);
+ dbg("actual_length :%d", urb->actual_length);
+ dbg("setup_packet :%p", urb->setup_packet);
+ dbg("start_frame :%d", urb->start_frame);
+ dbg("number_of_packets :%d", urb->number_of_packets);
+ dbg("interval :%d", urb->interval);
+ dbg("error_count :%d", urb->error_count);
+ dbg("context :%p", urb->context);
+ dbg("complete :%p", urb->complete);
+}
+#endif
+/*-------------------------------------------------------------------*/
+static int dabusb_cancel_queue (pdabusb_t s, struct list_head *q)
+{
+ unsigned long flags;
+ pbuff_t b;
+
+ dbg("dabusb_cancel_queue");
+
+ spin_lock_irqsave (&s->lock, flags);
+
+ list_for_each_entry(b, q, buff_list) {
+#ifdef DEBUG
+ dump_urb(b->purb);
+#endif
+ usb_unlink_urb (b->purb);
+ }
+ spin_unlock_irqrestore (&s->lock, flags);
+ return 0;
+}
+/*-------------------------------------------------------------------*/
+static int dabusb_free_queue (struct list_head *q)
+{
+ struct list_head *tmp;
+ struct list_head *p;
+ pbuff_t b;
+
+ dbg("dabusb_free_queue");
+ for (p = q->next; p != q;) {
+ b = list_entry (p, buff_t, buff_list);
+
+#ifdef DEBUG
+ dump_urb(b->purb);
+#endif
+ kfree(b->purb->transfer_buffer);
+ usb_free_urb(b->purb);
+ tmp = p->next;
+ list_del (p);
+ kfree (b);
+ p = tmp;
+ }
+
+ return 0;
+}
+/*-------------------------------------------------------------------*/
+static int dabusb_free_buffers (pdabusb_t s)
+{
+ unsigned long flags;
+ dbg("dabusb_free_buffers");
+
+ spin_lock_irqsave(&s->lock, flags);
+
+ dabusb_free_queue (&s->free_buff_list);
+ dabusb_free_queue (&s->rec_buff_list);
+
+ spin_unlock_irqrestore(&s->lock, flags);
+
+ s->got_mem = 0;
+ return 0;
+}
+/*-------------------------------------------------------------------*/
+static void dabusb_iso_complete (struct urb *purb)
+{
+ pbuff_t b = purb->context;
+ pdabusb_t s = b->s;
+ int i;
+ int len;
+ int dst = 0;
+ void *buf = purb->transfer_buffer;
+
+ dbg("dabusb_iso_complete");
+
+ // process if URB was not killed
+ if (purb->status != -ENOENT) {
+ unsigned int pipe = usb_rcvisocpipe (purb->dev, _DABUSB_ISOPIPE);
+ int pipesize = usb_maxpacket (purb->dev, pipe, usb_pipeout (pipe));
+ for (i = 0; i < purb->number_of_packets; i++)
+ if (!purb->iso_frame_desc[i].status) {
+ len = purb->iso_frame_desc[i].actual_length;
+ if (len <= pipesize) {
+ memcpy (buf + dst, buf + purb->iso_frame_desc[i].offset, len);
+ dst += len;
+ }
+ else
+ dev_err(&purb->dev->dev,
+ "dabusb_iso_complete: invalid len %d\n", len);
+ }
+ else
+ dev_warn(&purb->dev->dev, "dabusb_iso_complete: corrupted packet status: %d\n", purb->iso_frame_desc[i].status);
+ if (dst != purb->actual_length)
+ dev_err(&purb->dev->dev,
+ "dst!=purb->actual_length:%d!=%d\n",
+ dst, purb->actual_length);
+ }
+
+ if (atomic_dec_and_test (&s->pending_io) && !s->remove_pending && s->state != _stopped) {
+ s->overruns++;
+ dev_err(&purb->dev->dev, "overrun (%d)\n", s->overruns);
+ }
+ wake_up (&s->wait);
+}
+/*-------------------------------------------------------------------*/
+static int dabusb_alloc_buffers (pdabusb_t s)
+{
+ int transfer_len = 0;
+ pbuff_t b;
+ unsigned int pipe = usb_rcvisocpipe (s->usbdev, _DABUSB_ISOPIPE);
+ int pipesize = usb_maxpacket (s->usbdev, pipe, usb_pipeout (pipe));
+ int packets = _ISOPIPESIZE / pipesize;
+ int transfer_buffer_length = packets * pipesize;
+ int i;
+
+ dbg("dabusb_alloc_buffers pipesize:%d packets:%d transfer_buffer_len:%d",
+ pipesize, packets, transfer_buffer_length);
+
+ while (transfer_len < (s->total_buffer_size << 10)) {
+ b = kzalloc(sizeof (buff_t), GFP_KERNEL);
+ if (!b) {
+ dev_err(&s->usbdev->dev,
+ "kzalloc(sizeof(buff_t))==NULL\n");
+ goto err;
+ }
+ b->s = s;
+ b->purb = usb_alloc_urb(packets, GFP_KERNEL);
+ if (!b->purb) {
+ dev_err(&s->usbdev->dev, "usb_alloc_urb == NULL\n");
+ kfree (b);
+ goto err;
+ }
+
+ b->purb->transfer_buffer = kmalloc (transfer_buffer_length, GFP_KERNEL);
+ if (!b->purb->transfer_buffer) {
+ kfree (b->purb);
+ kfree (b);
+ dev_err(&s->usbdev->dev,
+ "kmalloc(%d)==NULL\n", transfer_buffer_length);
+ goto err;
+ }
+
+ b->purb->transfer_buffer_length = transfer_buffer_length;
+ b->purb->number_of_packets = packets;
+ b->purb->complete = dabusb_iso_complete;
+ b->purb->context = b;
+ b->purb->dev = s->usbdev;
+ b->purb->pipe = pipe;
+ b->purb->transfer_flags = URB_ISO_ASAP;
+
+ for (i = 0; i < packets; i++) {
+ b->purb->iso_frame_desc[i].offset = i * pipesize;
+ b->purb->iso_frame_desc[i].length = pipesize;
+ }
+
+ transfer_len += transfer_buffer_length;
+ list_add_tail (&b->buff_list, &s->free_buff_list);
+ }
+ s->got_mem = transfer_len;
+
+ return 0;
+
+ err:
+ dabusb_free_buffers (s);
+ return -ENOMEM;
+}
+/*-------------------------------------------------------------------*/
+static int dabusb_bulk (pdabusb_t s, pbulk_transfer_t pb)
+{
+ int ret;
+ unsigned int pipe;
+ int actual_length;
+
+ dbg("dabusb_bulk");
+
+ if (!pb->pipe)
+ pipe = usb_rcvbulkpipe (s->usbdev, 2);
+ else
+ pipe = usb_sndbulkpipe (s->usbdev, 2);
+
+ ret=usb_bulk_msg(s->usbdev, pipe, pb->data, pb->size, &actual_length, 100);
+ if(ret<0) {
+ dev_err(&s->usbdev->dev,
+ "usb_bulk_msg failed(%d)\n", ret);
+
+ if (usb_set_interface (s->usbdev, _DABUSB_IF, 1) < 0) {
+ dev_err(&s->usbdev->dev, "set_interface failed\n");
+ return -EINVAL;
+ }
+
+ }
+
+ if( ret == -EPIPE ) {
+ dev_warn(&s->usbdev->dev, "CLEAR_FEATURE request to remove STALL condition.\n");
+ if(usb_clear_halt(s->usbdev, usb_pipeendpoint(pipe)))
+ dev_err(&s->usbdev->dev, "request failed\n");
+ }
+
+ pb->size = actual_length;
+ return ret;
+}
+/* --------------------------------------------------------------------- */
+static int dabusb_writemem (pdabusb_t s, int pos, const unsigned char *data,
+ int len)
+{
+ int ret;
+ unsigned char *transfer_buffer = kmalloc (len, GFP_KERNEL);
+
+ if (!transfer_buffer) {
+ dev_err(&s->usbdev->dev,
+ "dabusb_writemem: kmalloc(%d) failed.\n", len);
+ return -ENOMEM;
+ }
+
+ memcpy (transfer_buffer, data, len);
+
+ ret=usb_control_msg(s->usbdev, usb_sndctrlpipe( s->usbdev, 0 ), 0xa0, 0x40, pos, 0, transfer_buffer, len, 300);
+
+ kfree (transfer_buffer);
+ return ret;
+}
+/* --------------------------------------------------------------------- */
+static int dabusb_8051_reset (pdabusb_t s, unsigned char reset_bit)
+{
+ dbg("dabusb_8051_reset: %d",reset_bit);
+ return dabusb_writemem (s, CPUCS_REG, &reset_bit, 1);
+}
+/* --------------------------------------------------------------------- */
+static int dabusb_loadmem (pdabusb_t s, const char *fname)
+{
+ int ret;
+ const struct ihex_binrec *rec;
+ const struct firmware *uninitialized_var(fw);
+
+ dbg("Enter dabusb_loadmem (internal)");
+
+ ret = request_ihex_firmware(&fw, "dabusb/firmware.fw", &s->usbdev->dev);
+ if (ret) {
+ dev_err(&s->usbdev->dev,
+ "Failed to load \"dabusb/firmware.fw\": %d\n", ret);
+ goto out;
+ }
+ ret = dabusb_8051_reset (s, 1);
+
+ for (rec = (const struct ihex_binrec *)fw->data; rec;
+ rec = ihex_next_binrec(rec)) {
+ dbg("dabusb_writemem: %04X %p %d)", be32_to_cpu(rec->addr),
+ rec->data, be16_to_cpu(rec->len));
+
+ ret = dabusb_writemem(s, be32_to_cpu(rec->addr), rec->data,
+ be16_to_cpu(rec->len));
+ if (ret < 0) {
+ dev_err(&s->usbdev->dev,
+ "dabusb_writemem failed (%d %04X %p %d)\n",
+ ret, be32_to_cpu(rec->addr),
+ rec->data, be16_to_cpu(rec->len));
+ break;
+ }
+ }
+ ret = dabusb_8051_reset (s, 0);
+ release_firmware(fw);
+ out:
+ dbg("dabusb_loadmem: exit");
+
+ return ret;
+}
+/* --------------------------------------------------------------------- */
+static int dabusb_fpga_clear (pdabusb_t s, pbulk_transfer_t b)
+{
+ b->size = 4;
+ b->data[0] = 0x2a;
+ b->data[1] = 0;
+ b->data[2] = 0;
+ b->data[3] = 0;
+
+ dbg("dabusb_fpga_clear");
+
+ return dabusb_bulk (s, b);
+}
+/* --------------------------------------------------------------------- */
+static int dabusb_fpga_init (pdabusb_t s, pbulk_transfer_t b)
+{
+ b->size = 4;
+ b->data[0] = 0x2c;
+ b->data[1] = 0;
+ b->data[2] = 0;
+ b->data[3] = 0;
+
+ dbg("dabusb_fpga_init");
+
+ return dabusb_bulk (s, b);
+}
+/* --------------------------------------------------------------------- */
+static int dabusb_fpga_download (pdabusb_t s, const char *fname)
+{
+ pbulk_transfer_t b = kmalloc (sizeof (bulk_transfer_t), GFP_KERNEL);
+ const struct firmware *fw;
+ unsigned int blen, n;
+ int ret;
+
+ dbg("Enter dabusb_fpga_download (internal)");
+
+ if (!b) {
+ dev_err(&s->usbdev->dev,
+ "kmalloc(sizeof(bulk_transfer_t))==NULL\n");
+ return -ENOMEM;
+ }
+
+ ret = request_firmware(&fw, "dabusb/bitstream.bin", &s->usbdev->dev);
+ if (ret) {
+ dev_err(&s->usbdev->dev,
+ "Failed to load \"dabusb/bitstream.bin\": %d\n", ret);
+ kfree(b);
+ return ret;
+ }
+
+ b->pipe = 1;
+ ret = dabusb_fpga_clear (s, b);
+ mdelay (10);
+ blen = fw->data[73] + (fw->data[72] << 8);
+
+ dbg("Bitstream len: %i", blen);
+
+ b->data[0] = 0x2b;
+ b->data[1] = 0;
+ b->data[2] = 0;
+ b->data[3] = 60;
+
+ for (n = 0; n <= blen + 60; n += 60) {
+ // some cclks for startup
+ b->size = 64;
+ memcpy (b->data + 4, fw->data + 74 + n, 60);
+ ret = dabusb_bulk (s, b);
+ if (ret < 0) {
+ dev_err(&s->usbdev->dev, "dabusb_bulk failed.\n");
+ break;
+ }
+ mdelay (1);
+ }
+
+ ret = dabusb_fpga_init (s, b);
+ kfree (b);
+ release_firmware(fw);
+
+ dbg("exit dabusb_fpga_download");
+
+ return ret;
+}
+
+static int dabusb_stop (pdabusb_t s)
+{
+ dbg("dabusb_stop");
+
+ s->state = _stopped;
+ dabusb_cancel_queue (s, &s->rec_buff_list);
+
+ dbg("pending_io: %d", s->pending_io.counter);
+
+ s->pending_io.counter = 0;
+ return 0;
+}
+
+static int dabusb_startrek (pdabusb_t s)
+{
+ if (!s->got_mem && s->state != _started) {
+
+ dbg("dabusb_startrek");
+
+ if (dabusb_alloc_buffers (s) < 0)
+ return -ENOMEM;
+ dabusb_stop (s);
+ s->state = _started;
+ s->readptr = 0;
+ }
+
+ if (!list_empty (&s->free_buff_list)) {
+ pbuff_t end;
+ int ret;
+
+ while (!dabusb_add_buf_tail (s, &s->rec_buff_list, &s->free_buff_list)) {
+
+ dbg("submitting: end:%p s->rec_buff_list:%p", s->rec_buff_list.prev, &s->rec_buff_list);
+
+ end = list_entry (s->rec_buff_list.prev, buff_t, buff_list);
+
+ ret = usb_submit_urb (end->purb, GFP_KERNEL);
+ if (ret) {
+ dev_err(&s->usbdev->dev,
+ "usb_submit_urb returned:%d\n", ret);
+ if (dabusb_add_buf_tail (s, &s->free_buff_list, &s->rec_buff_list))
+ dev_err(&s->usbdev->dev,
+ "startrek: dabusb_add_buf_tail failed\n");
+ break;
+ }
+ else
+ atomic_inc (&s->pending_io);
+ }
+ dbg("pending_io: %d",s->pending_io.counter);
+ }
+
+ return 0;
+}
+
+static ssize_t dabusb_read (struct file *file, char __user *buf, size_t count, loff_t * ppos)
+{
+ pdabusb_t s = (pdabusb_t) file->private_data;
+ unsigned long flags;
+ unsigned ret = 0;
+ int rem;
+ int cnt;
+ pbuff_t b;
+ struct urb *purb = NULL;
+
+ dbg("dabusb_read");
+
+ if (*ppos)
+ return -ESPIPE;
+
+ if (s->remove_pending)
+ return -EIO;
+
+
+ if (!s->usbdev)
+ return -EIO;
+
+ while (count > 0) {
+ dabusb_startrek (s);
+
+ spin_lock_irqsave (&s->lock, flags);
+
+ if (list_empty (&s->rec_buff_list)) {
+
+ spin_unlock_irqrestore(&s->lock, flags);
+
+ dev_err(&s->usbdev->dev,
+ "error: rec_buf_list is empty\n");
+ goto err;
+ }
+
+ b = list_entry (s->rec_buff_list.next, buff_t, buff_list);
+ purb = b->purb;
+
+ spin_unlock_irqrestore(&s->lock, flags);
+
+ if (purb->status == -EINPROGRESS) {
+ if (file->f_flags & O_NONBLOCK) // return nonblocking
+ {
+ if (!ret)
+ ret = -EAGAIN;
+ goto err;
+ }
+
+ interruptible_sleep_on (&s->wait);
+
+ if (signal_pending (current)) {
+ if (!ret)
+ ret = -ERESTARTSYS;
+ goto err;
+ }
+
+ spin_lock_irqsave (&s->lock, flags);
+
+ if (list_empty (&s->rec_buff_list)) {
+ spin_unlock_irqrestore(&s->lock, flags);
+ dev_err(&s->usbdev->dev,
+ "error: still no buffer available.\n");
+ goto err;
+ }
+ spin_unlock_irqrestore(&s->lock, flags);
+ s->readptr = 0;
+ }
+ if (s->remove_pending) {
+ ret = -EIO;
+ goto err;
+ }
+
+ rem = purb->actual_length - s->readptr; // set remaining bytes to copy
+
+ if (count >= rem)
+ cnt = rem;
+ else
+ cnt = count;
+
+ dbg("copy_to_user:%p %p %d",buf, purb->transfer_buffer + s->readptr, cnt);
+
+ if (copy_to_user (buf, purb->transfer_buffer + s->readptr, cnt)) {
+ dev_err(&s->usbdev->dev, "read: copy_to_user failed\n");
+ if (!ret)
+ ret = -EFAULT;
+ goto err;
+ }
+
+ s->readptr += cnt;
+ count -= cnt;
+ buf += cnt;
+ ret += cnt;
+
+ if (s->readptr == purb->actual_length) {
+ // finished, take next buffer
+ if (dabusb_add_buf_tail (s, &s->free_buff_list, &s->rec_buff_list))
+ dev_err(&s->usbdev->dev,
+ "read: dabusb_add_buf_tail failed\n");
+ s->readptr = 0;
+ }
+ }
+ err: //mutex_unlock(&s->mutex);
+ return ret;
+}
+
+static int dabusb_open (struct inode *inode, struct file *file)
+{
+ int devnum = iminor(inode);
+ pdabusb_t s;
+ int r;
+
+ if (devnum < DABUSB_MINOR || devnum >= (DABUSB_MINOR + NRDABUSB))
+ return -EIO;
+
+ s = &dabusb[devnum - DABUSB_MINOR];
+
+ dbg("dabusb_open");
+ mutex_lock(&s->mutex);
+
+ while (!s->usbdev || s->opened) {
+ mutex_unlock(&s->mutex);
+
+ if (file->f_flags & O_NONBLOCK)
+ return -EBUSY;
+ msleep_interruptible(500);
+
+ if (signal_pending (current))
+ return -EAGAIN;
+ mutex_lock(&s->mutex);
+ }
+ if (usb_set_interface (s->usbdev, _DABUSB_IF, 1) < 0) {
+ mutex_unlock(&s->mutex);
+ dev_err(&s->usbdev->dev, "set_interface failed\n");
+ return -EINVAL;
+ }
+ s->opened = 1;
+ mutex_unlock(&s->mutex);
+
+ file->f_pos = 0;
+ file->private_data = s;
+
+ r = nonseekable_open(inode, file);
+ return r;
+}
+
+static int dabusb_release (struct inode *inode, struct file *file)
+{
+ pdabusb_t s = (pdabusb_t) file->private_data;
+
+ dbg("dabusb_release");
+
+ mutex_lock(&s->mutex);
+ dabusb_stop (s);
+ dabusb_free_buffers (s);
+ mutex_unlock(&s->mutex);
+
+ if (!s->remove_pending) {
+ if (usb_set_interface (s->usbdev, _DABUSB_IF, 0) < 0)
+ dev_err(&s->usbdev->dev, "set_interface failed\n");
+ }
+ else
+ wake_up (&s->remove_ok);
+
+ s->opened = 0;
+ return 0;
+}
+
+static long dabusb_ioctl (struct file *file, unsigned int cmd, unsigned long arg)
+{
+ pdabusb_t s = (pdabusb_t) file->private_data;
+ pbulk_transfer_t pbulk;
+ int ret = 0;
+ int version = DABUSB_VERSION;
+
+ dbg("dabusb_ioctl");
+
+ if (s->remove_pending)
+ return -EIO;
+
+ mutex_lock(&s->mutex);
+
+ if (!s->usbdev) {
+ mutex_unlock(&s->mutex);
+ return -EIO;
+ }
+
+ switch (cmd) {
+
+ case IOCTL_DAB_BULK:
+ pbulk = memdup_user((void __user *)arg,
+ sizeof(bulk_transfer_t));
+
+ if (IS_ERR(pbulk)) {
+ ret = PTR_ERR(pbulk);
+ break;
+ }
+
+ ret=dabusb_bulk (s, pbulk);
+ if(ret==0)
+ if (copy_to_user((void __user *)arg, pbulk,
+ sizeof(bulk_transfer_t)))
+ ret = -EFAULT;
+ kfree (pbulk);
+ break;
+
+ case IOCTL_DAB_OVERRUNS:
+ ret = put_user (s->overruns, (unsigned int __user *) arg);
+ break;
+
+ case IOCTL_DAB_VERSION:
+ ret = put_user (version, (unsigned int __user *) arg);
+ break;
+
+ default:
+ ret = -ENOIOCTLCMD;
+ break;
+ }
+ mutex_unlock(&s->mutex);
+ return ret;
+}
+
+static const struct file_operations dabusb_fops =
+{
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .read = dabusb_read,
+ .unlocked_ioctl = dabusb_ioctl,
+ .open = dabusb_open,
+ .release = dabusb_release,
+};
+
+static char *dabusb_devnode(struct device *dev, mode_t *mode)
+{
+ return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
+}
+
+static struct usb_class_driver dabusb_class = {
+ .name = "dabusb%d",
+ .devnode = dabusb_devnode,
+ .fops = &dabusb_fops,
+ .minor_base = DABUSB_MINOR,
+};
+
+
+/* --------------------------------------------------------------------- */
+static int dabusb_probe (struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *usbdev = interface_to_usbdev(intf);
+ int retval;
+ pdabusb_t s;
+
+ dbg("dabusb: probe: vendor id 0x%x, device id 0x%x ifnum:%d",
+ le16_to_cpu(usbdev->descriptor.idVendor),
+ le16_to_cpu(usbdev->descriptor.idProduct),
+ intf->altsetting->desc.bInterfaceNumber);
+
+ /* We don't handle multiple configurations */
+ if (usbdev->descriptor.bNumConfigurations != 1)
+ return -ENODEV;
+
+ if (intf->altsetting->desc.bInterfaceNumber != _DABUSB_IF &&
+ le16_to_cpu(usbdev->descriptor.idProduct) == 0x9999)
+ return -ENODEV;
+
+
+
+ s = &dabusb[intf->minor];
+
+ mutex_lock(&s->mutex);
+ s->remove_pending = 0;
+ s->usbdev = usbdev;
+ s->devnum = intf->minor;
+
+ if (usb_reset_configuration (usbdev) < 0) {
+ dev_err(&intf->dev, "reset_configuration failed\n");
+ goto reject;
+ }
+ if (le16_to_cpu(usbdev->descriptor.idProduct) == 0x2131) {
+ dabusb_loadmem (s, NULL);
+ goto reject;
+ }
+ else {
+ dabusb_fpga_download (s, NULL);
+
+ if (usb_set_interface (s->usbdev, _DABUSB_IF, 0) < 0) {
+ dev_err(&intf->dev, "set_interface failed\n");
+ goto reject;
+ }
+ }
+ dbg("bound to interface: %d", intf->altsetting->desc.bInterfaceNumber);
+ usb_set_intfdata (intf, s);
+ mutex_unlock(&s->mutex);
+
+ retval = usb_register_dev(intf, &dabusb_class);
+ if (retval) {
+ usb_set_intfdata (intf, NULL);
+ return -ENOMEM;
+ }
+
+ return 0;
+
+ reject:
+ mutex_unlock(&s->mutex);
+ s->usbdev = NULL;
+ return -ENODEV;
+}
+
+static void dabusb_disconnect (struct usb_interface *intf)
+{
+ wait_queue_t __wait;
+ pdabusb_t s = usb_get_intfdata (intf);
+
+ dbg("dabusb_disconnect");
+
+ init_waitqueue_entry(&__wait, current);
+
+ usb_set_intfdata (intf, NULL);
+ if (s) {
+ usb_deregister_dev (intf, &dabusb_class);
+ s->remove_pending = 1;
+ wake_up (&s->wait);
+ add_wait_queue(&s->remove_ok, &__wait);
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ if (s->state == _started)
+ schedule();
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&s->remove_ok, &__wait);
+
+ s->usbdev = NULL;
+ s->overruns = 0;
+ }
+}
+
+static struct usb_device_id dabusb_ids [] = {
+ // { USB_DEVICE(0x0547, 0x2131) }, /* An2131 chip, no boot ROM */
+ { USB_DEVICE(0x0547, 0x9999) },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, dabusb_ids);
+
+static struct usb_driver dabusb_driver = {
+ .name = "dabusb",
+ .probe = dabusb_probe,
+ .disconnect = dabusb_disconnect,
+ .id_table = dabusb_ids,
+};
+
+/* --------------------------------------------------------------------- */
+
+static int __init dabusb_init (void)
+{
+ int retval;
+ unsigned u;
+
+ /* initialize struct */
+ for (u = 0; u < NRDABUSB; u++) {
+ pdabusb_t s = &dabusb[u];
+ memset (s, 0, sizeof (dabusb_t));
+ mutex_init (&s->mutex);
+ s->usbdev = NULL;
+ s->total_buffer_size = buffers;
+ init_waitqueue_head (&s->wait);
+ init_waitqueue_head (&s->remove_ok);
+ spin_lock_init (&s->lock);
+ INIT_LIST_HEAD (&s->free_buff_list);
+ INIT_LIST_HEAD (&s->rec_buff_list);
+ }
+
+ /* register misc device */
+ retval = usb_register(&dabusb_driver);
+ if (retval)
+ goto out;
+
+ dbg("dabusb_init: driver registered");
+
+ printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+ DRIVER_DESC "\n");
+
+out:
+ return retval;
+}
+
+static void __exit dabusb_cleanup (void)
+{
+ dbg("dabusb_cleanup");
+
+ usb_deregister (&dabusb_driver);
+}
+
+/* --------------------------------------------------------------------- */
+
+MODULE_AUTHOR( DRIVER_AUTHOR );
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE("dabusb/firmware.fw");
+MODULE_FIRMWARE("dabusb/bitstream.bin");
+
+module_param(buffers, int, 0);
+MODULE_PARM_DESC (buffers, "Number of buffers (default=256)");
+
+module_init (dabusb_init);
+module_exit (dabusb_cleanup);
+
+/* --------------------------------------------------------------------- */
diff --git a/drivers/staging/dabusb/dabusb.h b/drivers/staging/dabusb/dabusb.h
new file mode 100644
index 00000000000..00eb34c863e
--- /dev/null
+++ b/drivers/staging/dabusb/dabusb.h
@@ -0,0 +1,85 @@
+#define _BULK_DATA_LEN 64
+typedef struct
+{
+ unsigned char data[_BULK_DATA_LEN];
+ unsigned int size;
+ unsigned int pipe;
+}bulk_transfer_t,*pbulk_transfer_t;
+
+#define DABUSB_MINOR 240 /* some unassigned USB minor */
+#define DABUSB_VERSION 0x1000
+#define IOCTL_DAB_BULK _IOWR('d', 0x30, bulk_transfer_t)
+#define IOCTL_DAB_OVERRUNS _IOR('d', 0x15, int)
+#define IOCTL_DAB_VERSION _IOR('d', 0x3f, int)
+
+#ifdef __KERNEL__
+
+typedef enum { _stopped=0, _started } driver_state_t;
+
+typedef struct
+{
+ struct mutex mutex;
+ struct usb_device *usbdev;
+ wait_queue_head_t wait;
+ wait_queue_head_t remove_ok;
+ spinlock_t lock;
+ atomic_t pending_io;
+ driver_state_t state;
+ int remove_pending;
+ int got_mem;
+ int total_buffer_size;
+ unsigned int overruns;
+ int readptr;
+ int opened;
+ int devnum;
+ struct list_head free_buff_list;
+ struct list_head rec_buff_list;
+} dabusb_t,*pdabusb_t;
+
+typedef struct
+{
+ pdabusb_t s;
+ struct urb *purb;
+ struct list_head buff_list;
+} buff_t,*pbuff_t;
+
+typedef struct
+{
+ wait_queue_head_t wait;
+} bulk_completion_context_t, *pbulk_completion_context_t;
+
+
+#define _DABUSB_IF 2
+#define _DABUSB_ISOPIPE 0x09
+#define _ISOPIPESIZE 16384
+
+#define _BULK_DATA_LEN 64
+// Vendor specific request code for Anchor Upload/Download
+// This one is implemented in the core
+#define ANCHOR_LOAD_INTERNAL 0xA0
+
+// EZ-USB Control and Status Register. Bit 0 controls 8051 reset
+#define CPUCS_REG 0x7F92
+#define _TOTAL_BUFFERS 384
+
+#define MAX_INTEL_HEX_RECORD_LENGTH 16
+
+#ifndef _BYTE_DEFINED
+#define _BYTE_DEFINED
+typedef unsigned char BYTE;
+#endif // !_BYTE_DEFINED
+
+#ifndef _WORD_DEFINED
+#define _WORD_DEFINED
+typedef unsigned short WORD;
+#endif // !_WORD_DEFINED
+
+typedef struct _INTEL_HEX_RECORD
+{
+ BYTE Length;
+ WORD Address;
+ BYTE Type;
+ BYTE Data[MAX_INTEL_HEX_RECORD_LENGTH];
+} INTEL_HEX_RECORD, *PINTEL_HEX_RECORD;
+
+#endif
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-02-12 02:25:11 +0000