*/
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/bitops.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/errno.h>
-#include <linux/smp_lock.h>
#include <linux/usb.h>
#include <linux/mutex.h>
#include <linux/workqueue.h>
static int nousb; /* Disable USB when built into kernel image */
-struct workqueue_struct *ksuspend_usb_wq; /* For autosuspend */
+/* Workqueue for autosuspend and for remote wakeup of root hubs */
+struct workqueue_struct *ksuspend_usb_wq;
+
+#ifdef CONFIG_USB_SUSPEND
+static int usb_autosuspend_delay = 2; /* Default delay value,
+ * in seconds */
+module_param_named(autosuspend, usb_autosuspend_delay, int, 0644);
+MODULE_PARM_DESC(autosuspend, "default autosuspend delay");
+
+#else
+#define usb_autosuspend_delay 0
+#endif
/**
udev = to_usb_device(dev);
-#ifdef CONFIG_USB_SUSPEND
- cancel_delayed_work(&udev->autosuspend);
- flush_workqueue(ksuspend_usb_wq);
-#endif
usb_destroy_configuration(udev);
usb_put_hcd(bus_to_hcd(udev->bus));
kfree(udev->product);
kfree(udev);
}
+struct device_type usb_device_type = {
+ .name = "usb_device",
+ .release = usb_release_dev,
+};
+
#ifdef CONFIG_PM
static int ksuspend_usb_init(void)
{
- ksuspend_usb_wq = create_singlethread_workqueue("ksuspend_usbd");
+ /* This workqueue is supposed to be both freezable and
+ * singlethreaded. Its job doesn't justify running on more
+ * than one CPU.
+ */
+ ksuspend_usb_wq = create_freezeable_workqueue("ksuspend_usbd");
if (!ksuspend_usb_wq)
return -ENOMEM;
return 0;
#define ksuspend_usb_init() 0
#define ksuspend_usb_cleanup() do {} while (0)
-#endif
-
-#ifdef CONFIG_USB_SUSPEND
-
-/* usb_autosuspend_work - callback routine to autosuspend a USB device */
-static void usb_autosuspend_work(void *_udev)
-{
- struct usb_device *udev = _udev;
-
- usb_pm_lock(udev);
- udev->auto_pm = 1;
- usb_suspend_both(udev, PMSG_SUSPEND);
- usb_pm_unlock(udev);
-}
-
-#else
-
-static void usb_autosuspend_work(void *_udev)
-{}
-
-#endif
+#endif /* CONFIG_PM */
/**
* usb_alloc_dev - usb device constructor (usbcore-internal)
* @parent: hub to which device is connected; null to allocate a root hub
* @bus: bus used to access the device
* @port1: one-based index of port; ignored for root hubs
- * Context: !in_interrupt ()
+ * Context: !in_interrupt()
*
* Only hub drivers (including virtual root hub drivers for host
* controllers) should ever call this.
device_initialize(&dev->dev);
dev->dev.bus = &usb_bus_type;
+ dev->dev.type = &usb_device_type;
dev->dev.dma_mask = bus->controller->dma_mask;
- dev->dev.release = usb_release_dev;
+ set_dev_node(&dev->dev, dev_to_node(bus->controller));
dev->state = USB_STATE_ATTACHED;
- /* This magic assignment distinguishes devices from interfaces */
- dev->dev.platform_data = &usb_generic_driver;
-
INIT_LIST_HEAD(&dev->ep0.urb_list);
dev->ep0.desc.bLength = USB_DT_ENDPOINT_SIZE;
dev->ep0.desc.bDescriptorType = USB_DT_ENDPOINT;
* as stable: bus->busnum changes easily from modprobe order,
* cardbus or pci hotplugging, and so on.
*/
- if (unlikely (!parent)) {
- dev->devpath [0] = '0';
+ if (unlikely(!parent)) {
+ dev->devpath[0] = '0';
dev->dev.parent = bus->controller;
- sprintf (&dev->dev.bus_id[0], "usb%d", bus->busnum);
+ sprintf(&dev->dev.bus_id[0], "usb%d", bus->busnum);
} else {
/* match any labeling on the hubs; it's one-based */
- if (parent->devpath [0] == '0')
- snprintf (dev->devpath, sizeof dev->devpath,
+ if (parent->devpath[0] == '0')
+ snprintf(dev->devpath, sizeof dev->devpath,
"%d", port1);
else
- snprintf (dev->devpath, sizeof dev->devpath,
+ snprintf(dev->devpath, sizeof dev->devpath,
"%s.%d", parent->devpath, port1);
dev->dev.parent = &parent->dev;
- sprintf (&dev->dev.bus_id[0], "%d-%s",
+ sprintf(&dev->dev.bus_id[0], "%d-%s",
bus->busnum, dev->devpath);
/* hub driver sets up TT records */
#ifdef CONFIG_PM
mutex_init(&dev->pm_mutex);
- INIT_WORK(&dev->autosuspend, usb_autosuspend_work, dev);
+ INIT_DELAYED_WORK(&dev->autosuspend, usb_autosuspend_work);
+ dev->autosuspend_delay = usb_autosuspend_delay * HZ;
#endif
return dev;
}
/* see if this device matches */
if ((vendor_id == le16_to_cpu(dev->descriptor.idVendor)) &&
(product_id == le16_to_cpu(dev->descriptor.idProduct))) {
- dev_dbg (&dev->dev, "matched this device!\n");
+ dev_dbg(&dev->dev, "matched this device!\n");
ret_dev = usb_get_dev(dev);
goto exit;
}
*/
int usb_get_current_frame_number(struct usb_device *dev)
{
- return usb_hcd_get_frame_number (dev);
-}
-
-/**
- * usb_endpoint_dir_in - check if the endpoint has IN direction
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type IN, otherwise it returns false.
- */
-int usb_endpoint_dir_in(const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN);
-}
-
-/**
- * usb_endpoint_dir_out - check if the endpoint has OUT direction
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type OUT, otherwise it returns false.
- */
-int usb_endpoint_dir_out(const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT);
-}
-
-/**
- * usb_endpoint_xfer_bulk - check if the endpoint has bulk transfer type
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type bulk, otherwise it returns false.
- */
-int usb_endpoint_xfer_bulk(const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_BULK);
-}
-
-/**
- * usb_endpoint_xfer_int - check if the endpoint has interrupt transfer type
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type interrupt, otherwise it returns
- * false.
- */
-int usb_endpoint_xfer_int(const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_INT);
-}
-
-/**
- * usb_endpoint_xfer_isoc - check if the endpoint has isochronous transfer type
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint is of type isochronous, otherwise it returns
- * false.
- */
-int usb_endpoint_xfer_isoc(const struct usb_endpoint_descriptor *epd)
-{
- return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
- USB_ENDPOINT_XFER_ISOC);
-}
-
-/**
- * usb_endpoint_is_bulk_in - check if the endpoint is bulk IN
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has bulk transfer type and IN direction,
- * otherwise it returns false.
- */
-int usb_endpoint_is_bulk_in(const struct usb_endpoint_descriptor *epd)
-{
- return (usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_in(epd));
-}
-
-/**
- * usb_endpoint_is_bulk_out - check if the endpoint is bulk OUT
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has bulk transfer type and OUT direction,
- * otherwise it returns false.
- */
-int usb_endpoint_is_bulk_out(const struct usb_endpoint_descriptor *epd)
-{
- return (usb_endpoint_xfer_bulk(epd) && usb_endpoint_dir_out(epd));
-}
-
-/**
- * usb_endpoint_is_int_in - check if the endpoint is interrupt IN
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has interrupt transfer type and IN direction,
- * otherwise it returns false.
- */
-int usb_endpoint_is_int_in(const struct usb_endpoint_descriptor *epd)
-{
- return (usb_endpoint_xfer_int(epd) && usb_endpoint_dir_in(epd));
-}
-
-/**
- * usb_endpoint_is_int_out - check if the endpoint is interrupt OUT
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has interrupt transfer type and OUT direction,
- * otherwise it returns false.
- */
-int usb_endpoint_is_int_out(const struct usb_endpoint_descriptor *epd)
-{
- return (usb_endpoint_xfer_int(epd) && usb_endpoint_dir_out(epd));
-}
-
-/**
- * usb_endpoint_is_isoc_in - check if the endpoint is isochronous IN
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has isochronous transfer type and IN direction,
- * otherwise it returns false.
- */
-int usb_endpoint_is_isoc_in(const struct usb_endpoint_descriptor *epd)
-{
- return (usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_in(epd));
-}
-
-/**
- * usb_endpoint_is_isoc_out - check if the endpoint is isochronous OUT
- * @epd: endpoint to be checked
- *
- * Returns true if the endpoint has isochronous transfer type and OUT direction,
- * otherwise it returns false.
- */
-int usb_endpoint_is_isoc_out(const struct usb_endpoint_descriptor *epd)
-{
- return (usb_endpoint_xfer_isoc(epd) && usb_endpoint_dir_out(epd));
+ return usb_hcd_get_frame_number(dev);
}
/*-------------------------------------------------------------------*/
* address (through the pointer provided).
*
* These buffers are used with URB_NO_xxx_DMA_MAP set in urb->transfer_flags
- * to avoid behaviors like using "DMA bounce buffers", or tying down I/O
- * mapping hardware for long idle periods. The implementation varies between
+ * to avoid behaviors like using "DMA bounce buffers", or thrashing IOMMU
+ * hardware during URB completion/resubmit. The implementation varies between
* platforms, depending on details of how DMA will work to this device.
- * Using these buffers also helps prevent cacheline sharing problems on
- * architectures where CPU caches are not DMA-coherent.
+ * Using these buffers also eliminates cacheline sharing problems on
+ * architectures where CPU caches are not DMA-coherent. On systems without
+ * bus-snooping caches, these buffers are uncached.
*
* When the buffer is no longer used, free it with usb_buffer_free().
*/
-void *usb_buffer_alloc (
+void *usb_buffer_alloc(
struct usb_device *dev,
size_t size,
gfp_t mem_flags,
{
if (!dev || !dev->bus)
return NULL;
- return hcd_buffer_alloc (dev->bus, size, mem_flags, dma);
+ return hcd_buffer_alloc(dev->bus, size, mem_flags, dma);
}
/**
*
* This reclaims an I/O buffer, letting it be reused. The memory must have
* been allocated using usb_buffer_alloc(), and the parameters must match
- * those provided in that allocation request.
+ * those provided in that allocation request.
*/
-void usb_buffer_free (
+void usb_buffer_free(
struct usb_device *dev,
size_t size,
void *addr,
return;
if (!addr)
return;
- hcd_buffer_free (dev->bus, size, addr, dma);
+ hcd_buffer_free(dev->bus, size, addr, dma);
}
/**
* Reverse the effect of this call with usb_buffer_unmap().
*/
#if 0
-struct urb *usb_buffer_map (struct urb *urb)
+struct urb *usb_buffer_map(struct urb *urb)
{
struct usb_bus *bus;
struct device *controller;
return NULL;
if (controller->dma_mask) {
- urb->transfer_dma = dma_map_single (controller,
+ urb->transfer_dma = dma_map_single(controller,
urb->transfer_buffer, urb->transfer_buffer_length,
- usb_pipein (urb->pipe)
+ usb_pipein(urb->pipe)
? DMA_FROM_DEVICE : DMA_TO_DEVICE);
- if (usb_pipecontrol (urb->pipe))
- urb->setup_dma = dma_map_single (controller,
+ if (usb_pipecontrol(urb->pipe))
+ urb->setup_dma = dma_map_single(controller,
urb->setup_packet,
- sizeof (struct usb_ctrlrequest),
+ sizeof(struct usb_ctrlrequest),
DMA_TO_DEVICE);
// FIXME generic api broken like pci, can't report errors
// if (urb->transfer_dma == DMA_ADDR_INVALID) return 0;
* usb_buffer_dmasync - synchronize DMA and CPU view of buffer(s)
* @urb: urb whose transfer_buffer/setup_packet will be synchronized
*/
-void usb_buffer_dmasync (struct urb *urb)
+void usb_buffer_dmasync(struct urb *urb)
{
struct usb_bus *bus;
struct device *controller;
return;
if (controller->dma_mask) {
- dma_sync_single (controller,
+ dma_sync_single(controller,
urb->transfer_dma, urb->transfer_buffer_length,
- usb_pipein (urb->pipe)
+ usb_pipein(urb->pipe)
? DMA_FROM_DEVICE : DMA_TO_DEVICE);
- if (usb_pipecontrol (urb->pipe))
- dma_sync_single (controller,
+ if (usb_pipecontrol(urb->pipe))
+ dma_sync_single(controller,
urb->setup_dma,
- sizeof (struct usb_ctrlrequest),
+ sizeof(struct usb_ctrlrequest),
DMA_TO_DEVICE);
}
}
* Reverses the effect of usb_buffer_map().
*/
#if 0
-void usb_buffer_unmap (struct urb *urb)
+void usb_buffer_unmap(struct urb *urb)
{
struct usb_bus *bus;
struct device *controller;
return;
if (controller->dma_mask) {
- dma_unmap_single (controller,
+ dma_unmap_single(controller,
urb->transfer_dma, urb->transfer_buffer_length,
- usb_pipein (urb->pipe)
+ usb_pipein(urb->pipe)
? DMA_FROM_DEVICE : DMA_TO_DEVICE);
- if (usb_pipecontrol (urb->pipe))
- dma_unmap_single (controller,
+ if (usb_pipecontrol(urb->pipe))
+ dma_unmap_single(controller,
urb->setup_dma,
- sizeof (struct usb_ctrlrequest),
+ sizeof(struct usb_ctrlrequest),
DMA_TO_DEVICE);
}
urb->transfer_flags &= ~(URB_NO_TRANSFER_DMA_MAP
struct device *controller;
if (!dev
- || usb_pipecontrol (pipe)
+ || usb_pipecontrol(pipe)
|| !(bus = dev->bus)
|| !(controller = bus->controller)
|| !controller->dma_mask)
return -1;
// FIXME generic api broken like pci, can't report errors
- return dma_map_sg (controller, sg, nents,
- usb_pipein (pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ return dma_map_sg(controller, sg, nents,
+ usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
/* XXX DISABLED, no users currently. If you wish to re-enable this
|| !controller->dma_mask)
return;
- dma_sync_sg (controller, sg, n_hw_ents,
- usb_pipein (pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ dma_sync_sg(controller, sg, n_hw_ents,
+ usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
#endif
|| !controller->dma_mask)
return;
- dma_unmap_sg (controller, sg, n_hw_ents,
- usb_pipein (pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ dma_unmap_sg(controller, sg, n_hw_ents,
+ usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
}
/* format to disable USB on kernel command line is: nousb */
{
int retval;
if (nousb) {
- pr_info ("%s: USB support disabled\n", usbcore_name);
+ pr_info("%s: USB support disabled\n", usbcore_name);
return 0;
}
retval = usb_register(&usbfs_driver);
if (retval)
goto driver_register_failed;
- retval = usbdev_init();
+ retval = usb_devio_init();
if (retval)
- goto usbdevice_init_failed;
+ goto usb_devio_init_failed;
retval = usbfs_init();
if (retval)
goto fs_init_failed;
hub_init_failed:
usbfs_cleanup();
fs_init_failed:
- usbdev_cleanup();
-usbdevice_init_failed:
+ usb_devio_cleanup();
+usb_devio_init_failed:
usb_deregister(&usbfs_driver);
driver_register_failed:
usb_major_cleanup();
usb_major_cleanup();
usbfs_cleanup();
usb_deregister(&usbfs_driver);
- usbdev_cleanup();
+ usb_devio_cleanup();
usb_hub_cleanup();
usb_host_cleanup();
bus_unregister(&usb_bus_type);
EXPORT_SYMBOL(usb_find_device);
EXPORT_SYMBOL(usb_get_current_frame_number);
-EXPORT_SYMBOL_GPL(usb_endpoint_dir_in);
-EXPORT_SYMBOL_GPL(usb_endpoint_dir_out);
-EXPORT_SYMBOL_GPL(usb_endpoint_xfer_bulk);
-EXPORT_SYMBOL_GPL(usb_endpoint_xfer_int);
-EXPORT_SYMBOL_GPL(usb_endpoint_xfer_isoc);
-EXPORT_SYMBOL_GPL(usb_endpoint_is_bulk_in);
-EXPORT_SYMBOL_GPL(usb_endpoint_is_bulk_out);
-EXPORT_SYMBOL_GPL(usb_endpoint_is_int_in);
-EXPORT_SYMBOL_GPL(usb_endpoint_is_int_out);
-EXPORT_SYMBOL_GPL(usb_endpoint_is_isoc_in);
-EXPORT_SYMBOL_GPL(usb_endpoint_is_isoc_out);
-
-EXPORT_SYMBOL (usb_buffer_alloc);
-EXPORT_SYMBOL (usb_buffer_free);
+EXPORT_SYMBOL(usb_buffer_alloc);
+EXPORT_SYMBOL(usb_buffer_free);
#if 0
-EXPORT_SYMBOL (usb_buffer_map);
-EXPORT_SYMBOL (usb_buffer_dmasync);
-EXPORT_SYMBOL (usb_buffer_unmap);
+EXPORT_SYMBOL(usb_buffer_map);
+EXPORT_SYMBOL(usb_buffer_dmasync);
+EXPORT_SYMBOL(usb_buffer_unmap);
#endif
-EXPORT_SYMBOL (usb_buffer_map_sg);
+EXPORT_SYMBOL(usb_buffer_map_sg);
#if 0
-EXPORT_SYMBOL (usb_buffer_dmasync_sg);
+EXPORT_SYMBOL(usb_buffer_dmasync_sg);
#endif
-EXPORT_SYMBOL (usb_buffer_unmap_sg);
+EXPORT_SYMBOL(usb_buffer_unmap_sg);
MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff