*/
-// #define DEBUG /* data to help fault diagnosis */
-// #define VERBOSE /* extra debug messages (success too) */
+/* #define VERBOSE_DEBUG */
#include <linux/init.h>
#include <linux/module.h>
#include <linux/wait.h>
#include <linux/compiler.h>
#include <asm/uaccess.h>
+#include <linux/sched.h>
#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/smp_lock.h>
#include <linux/device.h>
#include <linux/moduleparam.h>
-#include <linux/usb_gadgetfs.h>
-#include <linux/usb_gadget.h>
+#include <linux/usb/gadgetfs.h>
+#include <linux/usb/gadget.h>
/*
* may serve as a source of device events, used to handle all control
* requests other than basic enumeration.
*
- * - Then either immediately, or after a SET_CONFIGURATION control request,
- * ep_config() is called when each /dev/gadget/ep* file is configured
- * (by writing endpoint descriptors). Afterwards these files are used
- * to write() IN data or to read() OUT data. To halt the endpoint, a
- * "wrong direction" request is issued (like reading an IN endpoint).
+ * - Then, after a SET_CONFIGURATION control request, ep_config() is
+ * called when each /dev/gadget/ep* file is configured (by writing
+ * endpoint descriptors). Afterwards these files are used to write()
+ * IN data or to read() OUT data. To halt the endpoint, a "wrong
+ * direction" request is issued (like reading an IN endpoint).
*
* Unlike "usbfs" the only ioctl()s are for things that are rare, and maybe
* not possible on all hardware. For example, precise fault handling with
* must always write descriptors to initialize the device, then
* the device becomes UNCONNECTED until enumeration.
*/
- STATE_OPENED,
+ STATE_DEV_OPENED,
/* From then on, ep0 fd is in either of two basic modes:
* - (UN)CONNECTED: read usb_gadgetfs_event(s) from it
* - SETUP: read/write will transfer control data and succeed;
* or if "wrong direction", performs protocol stall
*/
- STATE_UNCONNECTED,
- STATE_CONNECTED,
- STATE_SETUP,
+ STATE_DEV_UNCONNECTED,
+ STATE_DEV_CONNECTED,
+ STATE_DEV_SETUP,
/* UNBOUND means the driver closed ep0, so the device won't be
* accessible again (DEV_DISABLED) until all fds are closed.
struct dev_data {
spinlock_t lock;
atomic_t count;
- enum ep0_state state;
+ enum ep0_state state; /* P: lock */
struct usb_gadgetfs_event event [N_EVENT];
unsigned ev_next;
struct fasync_struct *fasync;
enum ep_state {
STATE_EP_DISABLED = 0,
STATE_EP_READY,
- STATE_EP_DEFER_ENABLE,
STATE_EP_ENABLED,
STATE_EP_UNBOUND,
};
/* needs no more cleanup */
BUG_ON (!list_empty (&data->epfiles));
BUG_ON (waitqueue_active (&data->wait));
- BUG_ON (down_trylock (&data->lock) != 0);
kfree (data);
}
do { } while (0)
#endif /* DEBUG */
-#ifdef VERBOSE
+#ifdef VERBOSE_DEBUG
#define VDEBUG DBG
#else
#define VDEBUG(dev,fmt,args...) \
#define ERROR(dev,fmt,args...) \
xprintk(dev , KERN_ERR , fmt , ## args)
-#define WARN(dev,fmt,args...) \
- xprintk(dev , KERN_WARNING , fmt , ## args)
#define INFO(dev,fmt,args...) \
xprintk(dev , KERN_INFO , fmt , ## args)
if ((val = down_interruptible (&epdata->lock)) < 0)
return val;
-newstate:
+
switch (epdata->state) {
case STATE_EP_ENABLED:
break;
- case STATE_EP_DEFER_ENABLE:
- DBG (epdata->dev, "%s wait for host\n", epdata->name);
- if ((val = wait_event_interruptible (epdata->wait,
- epdata->state != STATE_EP_DEFER_ENABLE
- || epdata->dev->state == STATE_DEV_UNBOUND
- )) < 0)
- goto fail;
- goto newstate;
// case STATE_EP_DISABLED: /* "can't happen" */
// case STATE_EP_READY: /* "can't happen" */
default: /* error! */
// FALLTHROUGH
case STATE_EP_UNBOUND: /* clean disconnect */
val = -ENODEV;
-fail:
up (&epdata->lock);
}
return val;
static ssize_t
ep_io (struct ep_data *epdata, void *buf, unsigned len)
{
- DECLARE_COMPLETION (done);
+ DECLARE_COMPLETION_ONSTACK (done);
int value;
spin_lock_irq (&epdata->dev->lock);
return value;
/* halt any endpoint by doing a "wrong direction" i/o call */
- if (data->desc.bEndpointAddress & USB_DIR_IN) {
- if ((data->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
- == USB_ENDPOINT_XFER_ISOC)
+ if (usb_endpoint_dir_in(&data->desc)) {
+ if (usb_endpoint_xfer_isoc(&data->desc))
return -EINVAL;
DBG (data->dev, "%s halt\n", data->name);
spin_lock_irq (&data->dev->lock);
/* FIXME readahead for O_NONBLOCK and poll(); careful with ZLPs */
value = -ENOMEM;
- kbuf = kmalloc (len, SLAB_KERNEL);
+ kbuf = kmalloc (len, GFP_KERNEL);
if (unlikely (!kbuf))
goto free1;
return value;
/* halt any endpoint by doing a "wrong direction" i/o call */
- if (!(data->desc.bEndpointAddress & USB_DIR_IN)) {
- if ((data->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
- == USB_ENDPOINT_XFER_ISOC)
+ if (!usb_endpoint_dir_in(&data->desc)) {
+ if (usb_endpoint_xfer_isoc(&data->desc))
return -EINVAL;
DBG (data->dev, "%s halt\n", data->name);
spin_lock_irq (&data->dev->lock);
/* FIXME writebehind for O_NONBLOCK and poll(), qlen = 1 */
value = -ENOMEM;
- kbuf = kmalloc (len, SLAB_KERNEL);
+ kbuf = kmalloc (len, GFP_KERNEL);
if (!kbuf)
goto free1;
if (copy_from_user (kbuf, buf, len)) {
ep_release (struct inode *inode, struct file *fd)
{
struct ep_data *data = fd->private_data;
+ int value;
+
+ if ((value = down_interruptible(&data->lock)) < 0)
+ return value;
/* clean up if this can be reopened */
if (data->state != STATE_EP_UNBOUND) {
data->hs_desc.bDescriptorType = 0;
usb_ep_disable(data->ep);
}
+ up (&data->lock);
put_ep (data);
return 0;
}
-static int ep_ioctl (struct inode *inode, struct file *fd,
- unsigned code, unsigned long value)
+static long ep_ioctl(struct file *fd, unsigned code, unsigned long value)
{
struct ep_data *data = fd->private_data;
int status;
struct usb_request *req;
struct ep_data *epdata;
void *buf;
- char __user *ubuf;
+ const struct iovec *iv;
+ unsigned long nr_segs;
unsigned actual;
};
static ssize_t ep_aio_read_retry(struct kiocb *iocb)
{
struct kiocb_priv *priv = iocb->private;
- ssize_t status = priv->actual;
+ ssize_t len, total;
+ void *to_copy;
+ int i;
/* we "retry" to get the right mm context for this: */
- status = copy_to_user(priv->ubuf, priv->buf, priv->actual);
- if (unlikely(0 != status))
- status = -EFAULT;
- else
- status = priv->actual;
+
+ /* copy stuff into user buffers */
+ total = priv->actual;
+ len = 0;
+ to_copy = priv->buf;
+ for (i=0; i < priv->nr_segs; i++) {
+ ssize_t this = min((ssize_t)(priv->iv[i].iov_len), total);
+
+ if (copy_to_user(priv->iv[i].iov_base, to_copy, this)) {
+ if (len == 0)
+ len = -EFAULT;
+ break;
+ }
+
+ total -= this;
+ len += this;
+ to_copy += this;
+ if (total == 0)
+ break;
+ }
kfree(priv->buf);
kfree(priv);
- aio_put_req(iocb);
- return status;
+ return len;
}
static void ep_aio_complete(struct usb_ep *ep, struct usb_request *req)
spin_lock(&epdata->dev->lock);
priv->req = NULL;
priv->epdata = NULL;
- if (NULL == iocb->ki_retry
- || unlikely(0 == req->actual)
- || unlikely(kiocbIsCancelled(iocb))) {
+
+ /* if this was a write or a read returning no data then we
+ * don't need to copy anything to userspace, so we can
+ * complete the aio request immediately.
+ */
+ if (priv->iv == NULL || unlikely(req->actual == 0)) {
kfree(req->buf);
kfree(priv);
iocb->private = NULL;
/* aio_complete() reports bytes-transferred _and_ faults */
- if (unlikely(kiocbIsCancelled(iocb)))
- aio_put_req(iocb);
- else
- aio_complete(iocb,
- req->actual ? req->actual : req->status,
+ aio_complete(iocb, req->actual ? req->actual : req->status,
req->status);
} else {
/* retry() won't report both; so we hide some faults */
char *buf,
size_t len,
struct ep_data *epdata,
- char __user *ubuf
+ const struct iovec *iv,
+ unsigned long nr_segs
)
{
- struct kiocb_priv *priv = (void *) &iocb->private;
+ struct kiocb_priv *priv;
struct usb_request *req;
ssize_t value;
return value;
}
iocb->private = priv;
- priv->ubuf = ubuf;
+ priv->iv = iv;
+ priv->nr_segs = nr_segs;
value = get_ready_ep(iocb->ki_filp->f_flags, epdata);
if (unlikely(value < 0)) {
kfree(priv);
put_ep(epdata);
} else
- value = -EIOCBQUEUED;
+ value = (iv ? -EIOCBRETRY : -EIOCBQUEUED);
return value;
}
static ssize_t
-ep_aio_read(struct kiocb *iocb, char __user *ubuf, size_t len, loff_t o)
+ep_aio_read(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t o)
{
struct ep_data *epdata = iocb->ki_filp->private_data;
char *buf;
- if (unlikely(epdata->desc.bEndpointAddress & USB_DIR_IN))
+ if (unlikely(usb_endpoint_dir_in(&epdata->desc)))
return -EINVAL;
- buf = kmalloc(len, GFP_KERNEL);
+
+ buf = kmalloc(iocb->ki_left, GFP_KERNEL);
if (unlikely(!buf))
return -ENOMEM;
+
iocb->ki_retry = ep_aio_read_retry;
- return ep_aio_rwtail(iocb, buf, len, epdata, ubuf);
+ return ep_aio_rwtail(iocb, buf, iocb->ki_left, epdata, iov, nr_segs);
}
static ssize_t
-ep_aio_write(struct kiocb *iocb, const char __user *ubuf, size_t len, loff_t o)
+ep_aio_write(struct kiocb *iocb, const struct iovec *iov,
+ unsigned long nr_segs, loff_t o)
{
struct ep_data *epdata = iocb->ki_filp->private_data;
char *buf;
+ size_t len = 0;
+ int i = 0;
- if (unlikely(!(epdata->desc.bEndpointAddress & USB_DIR_IN)))
+ if (unlikely(!usb_endpoint_dir_in(&epdata->desc)))
return -EINVAL;
- buf = kmalloc(len, GFP_KERNEL);
+
+ buf = kmalloc(iocb->ki_left, GFP_KERNEL);
if (unlikely(!buf))
return -ENOMEM;
- if (unlikely(copy_from_user(buf, ubuf, len) != 0)) {
- kfree(buf);
- return -EFAULT;
+
+ for (i=0; i < nr_segs; i++) {
+ if (unlikely(copy_from_user(&buf[len], iov[i].iov_base,
+ iov[i].iov_len) != 0)) {
+ kfree(buf);
+ return -EFAULT;
+ }
+ len += iov[i].iov_len;
}
- return ep_aio_rwtail(iocb, buf, len, epdata, NULL);
+ return ep_aio_rwtail(iocb, buf, len, epdata, NULL, 0);
}
/*----------------------------------------------------------------------*/
/* used after endpoint configuration */
-static struct file_operations ep_io_operations = {
+static const struct file_operations ep_io_operations = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = ep_read,
.write = ep_write,
- .ioctl = ep_ioctl,
+ .unlocked_ioctl = ep_ioctl,
.release = ep_release,
.aio_read = ep_aio_read,
struct ep_data *data = fd->private_data;
struct usb_ep *ep;
u32 tag;
- int value;
+ int value, length = len;
if ((value = down_interruptible (&data->lock)) < 0)
return value;
goto fail0;
}
}
- value = len;
spin_lock_irq (&data->dev->lock);
if (data->dev->state == STATE_DEV_UNBOUND) {
break;
#endif
default:
- DBG (data->dev, "unconnected, %s init deferred\n",
+ DBG(data->dev, "unconnected, %s init abandoned\n",
data->name);
- data->state = STATE_EP_DEFER_ENABLE;
+ value = -EINVAL;
}
- if (value == 0)
+ if (value == 0) {
fd->f_op = &ep_io_operations;
+ value = length;
+ }
gone:
spin_unlock_irq (&data->dev->lock);
if (value < 0) {
static int
ep_open (struct inode *inode, struct file *fd)
{
- struct ep_data *data = inode->u.generic_ip;
+ struct ep_data *data = inode->i_private;
int value = -EBUSY;
if (down_interruptible (&data->lock) != 0)
}
/* used before endpoint configuration */
-static struct file_operations ep_config_operations = {
+static const struct file_operations ep_config_operations = {
.owner = THIS_MODULE,
.llseek = no_llseek,
struct dev_data *dev = ep->driver_data;
if (req->buf != dev->rbuf) {
- usb_ep_free_buffer (ep, req->buf, req->dma, req->length);
+ kfree(req->buf);
req->buf = dev->rbuf;
req->dma = DMA_ADDR_INVALID;
}
static void ep0_complete (struct usb_ep *ep, struct usb_request *req)
{
struct dev_data *dev = ep->driver_data;
+ unsigned long flags;
int free = 1;
/* for control OUT, data must still get to userspace */
+ spin_lock_irqsave(&dev->lock, flags);
if (!dev->setup_in) {
dev->setup_out_error = (req->status != 0);
if (!dev->setup_out_error)
free = 0;
dev->setup_out_ready = 1;
ep0_readable (dev);
- } else if (dev->state == STATE_SETUP)
- dev->state = STATE_CONNECTED;
+ }
/* clean up as appropriate */
if (free && req->buf != &dev->rbuf)
clean_req (ep, req);
req->complete = epio_complete;
+ spin_unlock_irqrestore(&dev->lock, flags);
}
static int setup_req (struct usb_ep *ep, struct usb_request *req, u16 len)
return -EBUSY;
}
if (len > sizeof (dev->rbuf))
- req->buf = usb_ep_alloc_buffer (ep, len, &req->dma, GFP_ATOMIC);
- if (req->buf == 0) {
+ req->buf = kmalloc(len, GFP_ATOMIC);
+ if (req->buf == NULL) {
req->buf = dev->rbuf;
return -ENOMEM;
}
}
/* control DATA stage */
- if ((state = dev->state) == STATE_SETUP) {
+ if ((state = dev->state) == STATE_DEV_SETUP) {
if (dev->setup_in) { /* stall IN */
VDEBUG(dev, "ep0in stall\n");
(void) usb_ep_set_halt (dev->gadget->ep0);
retval = -EL2HLT;
- dev->state = STATE_CONNECTED;
+ dev->state = STATE_DEV_CONNECTED;
} else if (len == 0) { /* ack SET_CONFIGURATION etc */
struct usb_ep *ep = dev->gadget->ep0;
if ((retval = setup_req (ep, req, 0)) == 0)
retval = usb_ep_queue (ep, req, GFP_ATOMIC);
- dev->state = STATE_CONNECTED;
+ dev->state = STATE_DEV_CONNECTED;
/* assume that was SET_CONFIGURATION */
if (dev->current_config) {
unsigned power;
-#ifdef CONFIG_USB_GADGET_DUALSPEED
- if (dev->gadget->speed == USB_SPEED_HIGH)
+
+ if (gadget_is_dualspeed(dev->gadget)
+ && (dev->gadget->speed
+ == USB_SPEED_HIGH))
power = dev->hs_config->bMaxPower;
else
-#endif
power = dev->config->bMaxPower;
usb_gadget_vbus_draw(dev->gadget, 2 * power);
}
spin_lock_irq (&dev->lock);
if (retval)
goto done;
+
+ if (dev->state != STATE_DEV_SETUP) {
+ retval = -ECANCELED;
+ goto done;
+ }
+ dev->state = STATE_DEV_CONNECTED;
+
if (dev->setup_out_error)
retval = -EIO;
else {
len = min (len, (size_t)dev->req->actual);
// FIXME don't call this with the spinlock held ...
- if (copy_to_user (buf, &dev->req->buf, len))
+ if (copy_to_user (buf, dev->req->buf, len))
retval = -EFAULT;
clean_req (dev->gadget->ep0, dev->req);
/* NOTE userspace can't yet choose to stall */
/* return queued events right away */
if (dev->ev_next != 0) {
unsigned i, n;
- int tmp = dev->ev_next;
- len = min (len, tmp * sizeof (struct usb_gadgetfs_event));
n = len / sizeof (struct usb_gadgetfs_event);
+ if (dev->ev_next < n)
+ n = dev->ev_next;
- /* ep0 can't deliver events when STATE_SETUP */
+ /* ep0 i/o has special semantics during STATE_DEV_SETUP */
for (i = 0; i < n; i++) {
if (dev->event [i].type == GADGETFS_SETUP) {
- len = n = i + 1;
- len *= sizeof (struct usb_gadgetfs_event);
- n = 0;
+ dev->state = STATE_DEV_SETUP;
+ n = i + 1;
break;
}
}
spin_unlock_irq (&dev->lock);
+ len = n * sizeof (struct usb_gadgetfs_event);
if (copy_to_user (buf, &dev->event, len))
retval = -EFAULT;
else
retval = len;
if (len > 0) {
- len /= sizeof (struct usb_gadgetfs_event);
-
/* NOTE this doesn't guard against broken drivers;
* concurrent ep0 readers may lose events.
*/
spin_lock_irq (&dev->lock);
- dev->ev_next -= len;
- if (dev->ev_next != 0)
- memmove (&dev->event, &dev->event [len],
+ if (dev->ev_next > n) {
+ memmove(&dev->event[0], &dev->event[n],
sizeof (struct usb_gadgetfs_event)
- * (tmp - len));
- if (n == 0)
- dev->state = STATE_SETUP;
+ * (dev->ev_next - n));
+ }
+ dev->ev_next -= n;
spin_unlock_irq (&dev->lock);
}
return retval;
switch (state) {
default:
- DBG (dev, "fail %s, state %d\n", __FUNCTION__, state);
+ DBG (dev, "fail %s, state %d\n", __func__, state);
retval = -ESRCH;
break;
- case STATE_UNCONNECTED:
- case STATE_CONNECTED:
+ case STATE_DEV_UNCONNECTED:
+ case STATE_DEV_CONNECTED:
spin_unlock_irq (&dev->lock);
- DBG (dev, "%s wait\n", __FUNCTION__);
+ DBG (dev, "%s wait\n", __func__);
/* wait for events */
retval = wait_event_interruptible (dev->wait,
switch (type) {
/* these events purge the queue */
case GADGETFS_DISCONNECT:
- if (dev->state == STATE_SETUP)
+ if (dev->state == STATE_DEV_SETUP)
dev->setup_abort = 1;
// FALL THROUGH
case GADGETFS_CONNECT:
for (i = 0; i != dev->ev_next; i++) {
if (dev->event [i].type != type)
continue;
- DBG (dev, "discard old event %d\n", type);
+ DBG(dev, "discard old event[%d] %d\n", i, type);
dev->ev_next--;
if (i == dev->ev_next)
break;
default:
BUG ();
}
+ VDEBUG(dev, "event[%d] = %d\n", dev->ev_next, type);
event = &dev->event [dev->ev_next++];
BUG_ON (dev->ev_next > N_EVENT);
- VDEBUG (dev, "ev %d, next %d\n", type, dev->ev_next);
memset (event, 0, sizeof *event);
event->type = type;
return event;
retval = -EIDRM;
/* data and/or status stage for control request */
- } else if (dev->state == STATE_SETUP) {
+ } else if (dev->state == STATE_DEV_SETUP) {
/* IN DATA+STATUS caller makes len <= wLength */
if (dev->setup_in) {
retval = setup_req (dev->gadget->ep0, dev->req, len);
if (retval == 0) {
+ dev->state = STATE_DEV_CONNECTED;
spin_unlock_irq (&dev->lock);
if (copy_from_user (dev->req->buf, buf, len))
retval = -EFAULT;
VDEBUG(dev, "ep0out stall\n");
(void) usb_ep_set_halt (dev->gadget->ep0);
retval = -EL2HLT;
- dev->state = STATE_CONNECTED;
+ dev->state = STATE_DEV_CONNECTED;
} else {
DBG(dev, "bogus ep0out stall!\n");
}
} else
- DBG (dev, "fail %s, state %d\n", __FUNCTION__, dev->state);
+ DBG (dev, "fail %s, state %d\n", __func__, dev->state);
spin_unlock_irq (&dev->lock);
return retval;
{
struct dev_data *dev = fd->private_data;
// caller must F_SETOWN before signal delivery happens
- VDEBUG (dev, "%s %s\n", __FUNCTION__, on ? "on" : "off");
+ VDEBUG (dev, "%s %s\n", __func__, on ? "on" : "off");
return fasync_helper (f, fd, on, &dev->fasync);
}
* alternatively, all host requests will time out.
*/
- fasync_helper (-1, fd, 0, &dev->fasync);
kfree (dev->buf);
dev->buf = NULL;
put_dev (dev);
/* other endpoints were all decoupled from this device */
+ spin_lock_irq(&dev->lock);
dev->state = STATE_DEV_DISABLED;
+ spin_unlock_irq(&dev->lock);
return 0;
}
-static int dev_ioctl (struct inode *inode, struct file *fd,
- unsigned code, unsigned long value)
+static unsigned int
+ep0_poll (struct file *fd, poll_table *wait)
+{
+ struct dev_data *dev = fd->private_data;
+ int mask = 0;
+
+ poll_wait(fd, &dev->wait, wait);
+
+ spin_lock_irq (&dev->lock);
+
+ /* report fd mode change before acting on it */
+ if (dev->setup_abort) {
+ dev->setup_abort = 0;
+ mask = POLLHUP;
+ goto out;
+ }
+
+ if (dev->state == STATE_DEV_SETUP) {
+ if (dev->setup_in || dev->setup_can_stall)
+ mask = POLLOUT;
+ } else {
+ if (dev->ev_next != 0)
+ mask = POLLIN;
+ }
+out:
+ spin_unlock_irq(&dev->lock);
+ return mask;
+}
+
+static long dev_ioctl (struct file *fd, unsigned code, unsigned long value)
{
struct dev_data *dev = fd->private_data;
struct usb_gadget *gadget = dev->gadget;
+ long ret = -ENOTTY;
- if (gadget->ops->ioctl)
- return gadget->ops->ioctl (gadget, code, value);
- return -ENOTTY;
+ if (gadget->ops->ioctl) {
+ lock_kernel();
+ ret = gadget->ops->ioctl (gadget, code, value);
+ unlock_kernel();
+ }
+ return ret;
}
/* used after device configuration */
-static struct file_operations ep0_io_operations = {
+static const struct file_operations ep0_io_operations = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = ep0_read,
.write = ep0_write,
.fasync = ep0_fasync,
- // .poll = ep0_poll,
- .ioctl = dev_ioctl,
+ .poll = ep0_poll,
+ .unlocked_ioctl = dev_ioctl,
.release = dev_release,
};
qual.bLength = sizeof qual;
qual.bDescriptorType = USB_DT_DEVICE_QUALIFIER;
- qual.bcdUSB = __constant_cpu_to_le16 (0x0200);
+ qual.bcdUSB = cpu_to_le16 (0x0200);
desc = dev->dev;
qual.bDeviceClass = desc->bDeviceClass;
config_buf (struct dev_data *dev, u8 type, unsigned index)
{
int len;
-#ifdef CONFIG_USB_GADGET_DUALSPEED
- int hs;
-#endif
+ int hs = 0;
/* only one configuration */
if (index > 0)
return -EINVAL;
-#ifdef CONFIG_USB_GADGET_DUALSPEED
- hs = (dev->gadget->speed == USB_SPEED_HIGH);
- if (type == USB_DT_OTHER_SPEED_CONFIG)
- hs = !hs;
+ if (gadget_is_dualspeed(dev->gadget)) {
+ hs = (dev->gadget->speed == USB_SPEED_HIGH);
+ if (type == USB_DT_OTHER_SPEED_CONFIG)
+ hs = !hs;
+ }
if (hs) {
dev->req->buf = dev->hs_config;
- len = le16_to_cpup (&dev->hs_config->wTotalLength);
- } else
-#endif
- {
+ len = le16_to_cpu(dev->hs_config->wTotalLength);
+ } else {
dev->req->buf = dev->config;
- len = le16_to_cpup (&dev->config->wTotalLength);
+ len = le16_to_cpu(dev->config->wTotalLength);
}
((u8 *)dev->req->buf) [1] = type;
return len;
spin_lock (&dev->lock);
dev->setup_abort = 0;
- if (dev->state == STATE_UNCONNECTED) {
- struct usb_ep *ep;
- struct ep_data *data;
-
- dev->state = STATE_CONNECTED;
- dev->dev->bMaxPacketSize0 = gadget->ep0->maxpacket;
-
-#ifdef CONFIG_USB_GADGET_DUALSPEED
- if (gadget->speed == USB_SPEED_HIGH && dev->hs_config == 0) {
+ if (dev->state == STATE_DEV_UNCONNECTED) {
+ if (gadget_is_dualspeed(gadget)
+ && gadget->speed == USB_SPEED_HIGH
+ && dev->hs_config == NULL) {
+ spin_unlock(&dev->lock);
ERROR (dev, "no high speed config??\n");
return -EINVAL;
}
-#endif /* CONFIG_USB_GADGET_DUALSPEED */
+
+ dev->state = STATE_DEV_CONNECTED;
+ dev->dev->bMaxPacketSize0 = gadget->ep0->maxpacket;
INFO (dev, "connected\n");
event = next_event (dev, GADGETFS_CONNECT);
event->u.speed = gadget->speed;
ep0_readable (dev);
- list_for_each_entry (ep, &gadget->ep_list, ep_list) {
- data = ep->driver_data;
- /* ... down_trylock (&data->lock) ... */
- if (data->state != STATE_EP_DEFER_ENABLE)
- continue;
-#ifdef CONFIG_USB_GADGET_DUALSPEED
- if (gadget->speed == USB_SPEED_HIGH)
- value = usb_ep_enable (ep, &data->hs_desc);
- else
-#endif /* CONFIG_USB_GADGET_DUALSPEED */
- value = usb_ep_enable (ep, &data->desc);
- if (value) {
- ERROR (dev, "deferred %s enable --> %d\n",
- data->name, value);
- continue;
- }
- data->state = STATE_EP_ENABLED;
- wake_up (&data->wait);
- DBG (dev, "woke up %s waiters\n", data->name);
- }
-
/* host may have given up waiting for response. we can miss control
* requests handled lower down (device/endpoint status and features);
* then ep0_{read,write} will report the wrong status. controller
* driver will have aborted pending i/o.
*/
- } else if (dev->state == STATE_SETUP)
+ } else if (dev->state == STATE_DEV_SETUP)
dev->setup_abort = 1;
req->buf = dev->rbuf;
/* currently one config, two speeds */
case USB_REQ_SET_CONFIGURATION:
if (ctrl->bRequestType != 0)
- break;
+ goto unrecognized;
if (0 == (u8) w_value) {
value = 0;
dev->current_config = 0;
// user mode expected to disable endpoints
} else {
u8 config, power;
-#ifdef CONFIG_USB_GADGET_DUALSPEED
- if (gadget->speed == USB_SPEED_HIGH) {
+
+ if (gadget_is_dualspeed(gadget)
+ && gadget->speed == USB_SPEED_HIGH) {
config = dev->hs_config->bConfigurationValue;
power = dev->hs_config->bMaxPower;
- } else
-#endif
- {
+ } else {
config = dev->config->bConfigurationValue;
power = dev->config->bMaxPower;
}
}
break;
-#ifndef CONFIG_USB_GADGETFS_PXA2XX
+#ifndef CONFIG_USB_GADGET_PXA25X
/* PXA automagically handles this request too */
case USB_REQ_GET_CONFIGURATION:
if (ctrl->bRequestType != 0x80)
- break;
+ goto unrecognized;
*(u8 *)req->buf = dev->current_config;
value = min (w_length, (u16) 1);
break;
}
/* proceed with data transfer and status phases? */
- if (value >= 0 && dev->state != STATE_SETUP) {
+ if (value >= 0 && dev->state != STATE_DEV_SETUP) {
req->length = value;
req->zero = value < w_length;
value = usb_ep_queue (gadget->ep0, req, GFP_ATOMIC);
{
struct list_head *entry, *tmp;
- DBG (dev, "%s %d\n", __FUNCTION__, dev->state);
+ DBG (dev, "%s %d\n", __func__, dev->state);
/* dev->state must prevent interference */
restart:
static int activate_ep_files (struct dev_data *dev)
{
struct usb_ep *ep;
+ struct ep_data *data;
gadget_for_each_ep (ep, dev->gadget) {
- struct ep_data *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
- goto enomem;
+ goto enomem0;
data->state = STATE_EP_DISABLED;
init_MUTEX (&data->lock);
init_waitqueue_head (&data->wait);
data->req = usb_ep_alloc_request (ep, GFP_KERNEL);
if (!data->req)
- goto enomem;
+ goto enomem1;
data->inode = gadgetfs_create_file (dev->sb, data->name,
data, &ep_config_operations,
&data->dentry);
- if (!data->inode) {
- kfree (data);
- goto enomem;
- }
+ if (!data->inode)
+ goto enomem2;
list_add_tail (&data->epfiles, &dev->epfiles);
}
return 0;
-enomem:
- DBG (dev, "%s enomem\n", __FUNCTION__);
+enomem2:
+ usb_ep_free_request (ep, data->req);
+enomem1:
+ put_dev (dev);
+ kfree (data);
+enomem0:
+ DBG (dev, "%s enomem\n", __func__);
destroy_ep_files (dev);
return -ENOMEM;
}
{
struct dev_data *dev = get_gadget_data (gadget);
- DBG (dev, "%s\n", __FUNCTION__);
+ DBG (dev, "%s\n", __func__);
spin_lock_irq (&dev->lock);
dev->state = STATE_DEV_UNBOUND;
/* we've already been disconnected ... no i/o is active */
if (dev->req)
usb_ep_free_request (gadget->ep0, dev->req);
- DBG (dev, "%s done\n", __FUNCTION__);
+ DBG (dev, "%s done\n", __func__);
put_dev (dev);
}
if (!dev)
return -ESRCH;
if (0 != strcmp (CHIP, gadget->name)) {
- printk (KERN_ERR "%s expected %s controller not %s\n",
+ pr_err("%s expected %s controller not %s\n",
shortname, CHIP, gadget->name);
return -ENODEV;
}
goto enomem;
INFO (dev, "bound to %s driver\n", gadget->name);
- dev->state = STATE_UNCONNECTED;
+ spin_lock_irq(&dev->lock);
+ dev->state = STATE_DEV_UNCONNECTED;
+ spin_unlock_irq(&dev->lock);
get_dev (dev);
return 0;
{
struct dev_data *dev = get_gadget_data (gadget);
- if (dev->state == STATE_UNCONNECTED) {
- DBG (dev, "already unconnected\n");
- return;
- }
- dev->state = STATE_UNCONNECTED;
+ spin_lock (&dev->lock);
+ if (dev->state == STATE_DEV_UNCONNECTED)
+ goto exit;
+ dev->state = STATE_DEV_UNCONNECTED;
INFO (dev, "disconnected\n");
- spin_lock (&dev->lock);
next_event (dev, GADGETFS_DISCONNECT);
ep0_readable (dev);
+exit:
spin_unlock (&dev->lock);
}
INFO (dev, "suspended from state %d\n", dev->state);
spin_lock (&dev->lock);
switch (dev->state) {
- case STATE_SETUP: // VERY odd... host died??
- case STATE_CONNECTED:
- case STATE_UNCONNECTED:
+ case STATE_DEV_SETUP: // VERY odd... host died??
+ case STATE_DEV_CONNECTED:
+ case STATE_DEV_UNCONNECTED:
next_event (dev, GADGETFS_SUSPEND);
ep0_readable (dev);
/* FALLTHROUGH */
.disconnect = gadgetfs_disconnect,
.suspend = gadgetfs_suspend,
- .driver = {
+ .driver = {
.name = (char *) shortname,
},
};
.unbind = gadgetfs_nop,
.setup = (void *)gadgetfs_nop,
.disconnect = gadgetfs_nop,
- .driver = {
+ .driver = {
.name = "nop",
},
};
* . full/low speed config ... all wTotalLength bytes (with interface,
* class, altsetting, endpoint, and other descriptors)
* . high speed config ... all descriptors, for high speed operation;
- * this one's optional except for high-speed hardware
+ * this one's optional except for high-speed hardware
* . device descriptor
*
- * Endpoints are not yet enabled. Drivers may want to immediately
- * initialize them, using the /dev/gadget/ep* files that are available
- * as soon as the kernel sees the configuration, or they can wait
- * until device configuration and interface altsetting changes create
+ * Endpoints are not yet enabled. Drivers must wait until device
+ * configuration and interface altsetting changes create
* the need to configure (or unconfigure) them.
*
* After initialization, the device stays active for as long as that
- * $CHIP file is open. Events may then be read from that descriptor,
- * such configuration notifications. More complex drivers will handle
- * some control requests in user space.
+ * $CHIP file is open. Events must then be read from that descriptor,
+ * such as configuration notifications.
*/
static int is_valid_config (struct usb_config_descriptor *config)
u32 tag;
char *kbuf;
- if (dev->state != STATE_OPENED)
- return -EEXIST;
-
if (len < (USB_DT_CONFIG_SIZE + USB_DT_DEVICE_SIZE + 4))
return -EINVAL;
buf += 4;
length -= 4;
- kbuf = kmalloc (length, SLAB_KERNEL);
+ kbuf = kmalloc (length, GFP_KERNEL);
if (!kbuf)
return -ENOMEM;
if (copy_from_user (kbuf, buf, length)) {
/* full or low speed config */
dev->config = (void *) kbuf;
- total = le16_to_cpup (&dev->config->wTotalLength);
+ total = le16_to_cpu(dev->config->wTotalLength);
if (!is_valid_config (dev->config) || total >= length)
goto fail;
kbuf += total;
/* optional high speed config */
if (kbuf [1] == USB_DT_CONFIG) {
dev->hs_config = (void *) kbuf;
- total = le16_to_cpup (&dev->hs_config->wTotalLength);
+ total = le16_to_cpu(dev->hs_config->wTotalLength);
if (!is_valid_config (dev->hs_config) || total >= length)
goto fail;
kbuf += total;
|| dev->dev->bNumConfigurations != 1)
goto fail;
dev->dev->bNumConfigurations = 1;
- dev->dev->bcdUSB = __constant_cpu_to_le16 (0x0200);
+ dev->dev->bcdUSB = cpu_to_le16 (0x0200);
/* triggers gadgetfs_bind(); then we can enumerate. */
spin_unlock_irq (&dev->lock);
fail:
spin_unlock_irq (&dev->lock);
- pr_debug ("%s: %s fail %Zd, %p\n", shortname, __FUNCTION__, value, dev);
+ pr_debug ("%s: %s fail %Zd, %p\n", shortname, __func__, value, dev);
kfree (dev->buf);
dev->buf = NULL;
return value;
static int
dev_open (struct inode *inode, struct file *fd)
{
- struct dev_data *dev = inode->u.generic_ip;
+ struct dev_data *dev = inode->i_private;
int value = -EBUSY;
+ spin_lock_irq(&dev->lock);
if (dev->state == STATE_DEV_DISABLED) {
dev->ev_next = 0;
- dev->state = STATE_OPENED;
+ dev->state = STATE_DEV_OPENED;
fd->private_data = dev;
get_dev (dev);
value = 0;
}
+ spin_unlock_irq(&dev->lock);
return value;
}
-static struct file_operations dev_init_operations = {
+static const struct file_operations dev_init_operations = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.open = dev_open,
.write = dev_config,
.fasync = ep0_fasync,
- .ioctl = dev_ioctl,
+ .unlocked_ioctl = dev_ioctl,
.release = dev_release,
};
inode->i_mode = mode;
inode->i_uid = default_uid;
inode->i_gid = default_gid;
- inode->i_blksize = PAGE_CACHE_SIZE;
- inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime
= CURRENT_TIME;
- inode->u.generic_ip = data;
+ inode->i_private = data;
inode->i_fop = fops;
}
return inode;
return inode;
}
-static struct super_operations gadget_fs_operations = {
+static const struct super_operations gadget_fs_operations = {
.statfs = simple_statfs,
.drop_inode = generic_delete_inode,
};
NULL, &simple_dir_operations,
S_IFDIR | S_IRUGO | S_IXUGO);
if (!inode)
- return -ENOMEM;
+ goto enomem0;
inode->i_op = &simple_dir_inode_operations;
- if (!(d = d_alloc_root (inode))) {
- iput (inode);
- return -ENOMEM;
- }
+ if (!(d = d_alloc_root (inode)))
+ goto enomem1;
sb->s_root = d;
/* the ep0 file is named after the controller we expect;
*/
dev = dev_new ();
if (!dev)
- return -ENOMEM;
+ goto enomem2;
dev->sb = sb;
- if (!(inode = gadgetfs_create_file (sb, CHIP,
+ if (!gadgetfs_create_file (sb, CHIP,
dev, &dev_init_operations,
- &dev->dentry))) {
- put_dev(dev);
- return -ENOMEM;
- }
+ &dev->dentry))
+ goto enomem3;
/* other endpoint files are available after hardware setup,
* from binding to a controller.
*/
the_device = dev;
return 0;
+
+enomem3:
+ put_dev (dev);
+enomem2:
+ dput (d);
+enomem1:
+ iput (inode);
+enomem0:
+ return -ENOMEM;
}
/* "mount -t gadgetfs path /dev/gadget" ends up here */
-static struct super_block *
+static int
gadgetfs_get_sb (struct file_system_type *t, int flags,
- const char *path, void *opts)
+ const char *path, void *opts, struct vfsmount *mnt)
{
- return get_sb_single (t, flags, opts, gadgetfs_fill_super);
+ return get_sb_single (t, flags, opts, gadgetfs_fill_super, mnt);
}
static void
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff