* number from the USB core by calling usb_register_dev().
* @condition: binding state of the interface: not bound, binding
* (in probe()), bound to a driver, or unbinding (in disconnect())
- * @is_active: flag set when the interface is bound and not suspended.
* @sysfs_files_created: sysfs attributes exist
* @ep_devs_created: endpoint child pseudo-devices exist
* @unregistering: flag set when the interface is being unregistered
* @dev: driver model's view of this device
* @usb_dev: if an interface is bound to the USB major, this will point
* to the sysfs representation for that device.
- * @pm_usage_cnt: PM usage counter for this interface; autosuspend is not
- * allowed unless the counter is 0.
+ * @pm_usage_cnt: PM usage counter for this interface
* @reset_ws: Used for scheduling resets from atomic context.
* @reset_running: set to 1 if the interface is currently running a
* queued reset so that usb_cancel_queued_reset() doesn't try to
int minor; /* minor number this interface is
* bound to */
enum usb_interface_condition condition; /* state of binding */
- unsigned is_active:1; /* the interface is not suspended */
unsigned sysfs_files_created:1; /* the sysfs attributes exist */
unsigned ep_devs_created:1; /* endpoint "devices" exist */
unsigned unregistering:1; /* unregistration is in progress */
unsigned needs_altsetting0:1; /* switch to altsetting 0 is pending */
unsigned needs_binding:1; /* needs delayed unbind/rebind */
unsigned reset_running:1;
+ unsigned resetting_device:1; /* true: bandwidth alloc after reset */
struct device dev; /* interface specific device info */
struct device *usb_dev;
- int pm_usage_cnt; /* usage counter for autosuspend */
+ atomic_t pm_usage_cnt; /* usage counter for autosuspend */
struct work_struct reset_ws; /* for resets in atomic context */
};
#define to_usb_interface(d) container_of(d, struct usb_interface, dev)
u8 otg_port; /* 0, or number of OTG/HNP port */
unsigned is_b_host:1; /* true during some HNP roleswitches */
unsigned b_hnp_enable:1; /* OTG: did A-Host enable HNP? */
+ unsigned sg_tablesize; /* 0 or largest number of sg list entries */
int devnum_next; /* Next open device number in
* round-robin allocation */
struct usb_devmap devmap; /* device address allocation map */
struct usb_device *root_hub; /* Root hub */
+ struct usb_bus *hs_companion; /* Companion EHCI bus, if any */
struct list_head bus_list; /* list of busses */
int bandwidth_allocated; /* on this bus: how much of the time
* @portnum: parent port number (origin 1)
* @level: number of USB hub ancestors
* @can_submit: URBs may be submitted
- * @discon_suspended: disconnected while suspended
* @persist_enabled: USB_PERSIST enabled for this device
* @have_langid: whether string_langid is valid
* @authorized: policy has said we can use it;
* @usbfs_dentry: usbfs dentry entry for the device
* @maxchild: number of ports if hub
* @children: child devices - USB devices that are attached to this hub
- * @pm_usage_cnt: usage counter for autosuspend
* @quirks: quirks of the whole device
* @urbnum: number of URBs submitted for the whole device
* @active_duration: total time device is not suspended
- * @autosuspend: for delayed autosuspends
- * @autoresume: for autoresumes requested while in_interrupt
- * @pm_mutex: protects PM operations
* @last_busy: time of last use
* @autosuspend_delay: in jiffies
* @connect_time: time device was first connected
- * @auto_pm: autosuspend/resume in progress
* @do_remote_wakeup: remote wakeup should be enabled
* @reset_resume: needs reset instead of resume
* @autosuspend_disabled: autosuspend disabled by the user
- * @autoresume_disabled: autoresume disabled by the user
- * @skip_sys_resume: skip the next system resume
* @wusb_dev: if this is a Wireless USB device, link to the WUSB
* specific data for the device.
* @slot_id: Slot ID assigned by xHCI
u8 level;
unsigned can_submit:1;
- unsigned discon_suspended:1;
unsigned persist_enabled:1;
unsigned have_langid:1;
unsigned authorized:1;
int maxchild;
struct usb_device *children[USB_MAXCHILDREN];
- int pm_usage_cnt;
u32 quirks;
atomic_t urbnum;
unsigned long active_duration;
#ifdef CONFIG_PM
- struct delayed_work autosuspend;
- struct work_struct autoresume;
- struct mutex pm_mutex;
-
unsigned long last_busy;
int autosuspend_delay;
unsigned long connect_time;
- unsigned auto_pm:1;
unsigned do_remote_wakeup:1;
unsigned reset_resume:1;
unsigned autosuspend_disabled:1;
- unsigned autoresume_disabled:1;
- unsigned skip_sys_resume:1;
#endif
struct wusb_dev *wusb_dev;
int slot_id;
/* USB autosuspend and autoresume */
#ifdef CONFIG_USB_SUSPEND
-extern int usb_autopm_set_interface(struct usb_interface *intf);
+extern int usb_enable_autosuspend(struct usb_device *udev);
+extern int usb_disable_autosuspend(struct usb_device *udev);
+
extern int usb_autopm_get_interface(struct usb_interface *intf);
extern void usb_autopm_put_interface(struct usb_interface *intf);
extern int usb_autopm_get_interface_async(struct usb_interface *intf);
extern void usb_autopm_put_interface_async(struct usb_interface *intf);
-
-static inline void usb_autopm_enable(struct usb_interface *intf)
-{
- intf->pm_usage_cnt = 0;
- usb_autopm_set_interface(intf);
-}
-
-static inline void usb_autopm_disable(struct usb_interface *intf)
-{
- intf->pm_usage_cnt = 1;
- usb_autopm_set_interface(intf);
-}
+extern void usb_autopm_get_interface_no_resume(struct usb_interface *intf);
+extern void usb_autopm_put_interface_no_suspend(struct usb_interface *intf);
static inline void usb_mark_last_busy(struct usb_device *udev)
{
#else
-static inline int usb_autopm_set_interface(struct usb_interface *intf)
+static inline int usb_enable_autosuspend(struct usb_device *udev)
+{ return 0; }
+static inline int usb_disable_autosuspend(struct usb_device *udev)
{ return 0; }
static inline int usb_autopm_get_interface(struct usb_interface *intf)
{ return 0; }
-
static inline int usb_autopm_get_interface_async(struct usb_interface *intf)
{ return 0; }
{ }
static inline void usb_autopm_put_interface_async(struct usb_interface *intf)
{ }
-static inline void usb_autopm_enable(struct usb_interface *intf)
+static inline void usb_autopm_get_interface_no_resume(
+ struct usb_interface *intf)
{ }
-static inline void usb_autopm_disable(struct usb_interface *intf)
+static inline void usb_autopm_put_interface_no_suspend(
+ struct usb_interface *intf)
{ }
static inline void usb_mark_last_busy(struct usb_device *udev)
{ }
unsigned ifnum);
extern struct usb_host_interface *usb_altnum_to_altsetting(
const struct usb_interface *intf, unsigned int altnum);
+extern struct usb_host_interface *usb_find_alt_setting(
+ struct usb_host_config *config,
+ unsigned int iface_num,
+ unsigned int alt_num);
/**
* struct usb_device_driver - identifies USB device driver to usbcore
* @name: The driver name should be unique among USB drivers,
* and should normally be the same as the module name.
- * @nodename: Callback to provide a naming hint for a possible
- * device node to create.
* @probe: Called to see if the driver is willing to manage a particular
* device. If it is, probe returns zero and uses dev_set_drvdata()
* to associate driver-specific data with the device. If unwilling
/**
* struct usb_class_driver - identifies a USB driver that wants to use the USB major number
* @name: the usb class device name for this driver. Will show up in sysfs.
+ * @devnode: Callback to provide a naming hint for a possible
+ * device node to create.
* @fops: pointer to the struct file_operations of this driver.
* @minor_base: the start of the minor range for this driver.
*
*/
struct usb_class_driver {
char *name;
- char *(*nodename)(struct device *dev);
+ char *(*devnode)(struct device *dev, mode_t *mode);
const struct file_operations *fops;
int minor_base;
};
* @transfer_flags: A variety of flags may be used to affect how URB
* submission, unlinking, or operation are handled. Different
* kinds of URB can use different flags.
- * @transfer_buffer: This identifies the buffer to (or from) which
- * the I/O request will be performed (unless URB_NO_TRANSFER_DMA_MAP
- * is set). This buffer must be suitable for DMA; allocate it with
+ * @transfer_buffer: This identifies the buffer to (or from) which the I/O
+ * request will be performed unless URB_NO_TRANSFER_DMA_MAP is set
+ * (however, do not leave garbage in transfer_buffer even then).
+ * This buffer must be suitable for DMA; allocate it with
* kmalloc() or equivalent. For transfers to "in" endpoints, contents
* of this buffer will be modified. This buffer is used for the data
* stage of control transfers.
* the device driver is saying that it provided this DMA address,
* which the host controller driver should use in preference to the
* transfer_buffer.
+ * @sg: scatter gather buffer list
+ * @num_sgs: number of entries in the sg list
* @transfer_buffer_length: How big is transfer_buffer. The transfer may
* be broken up into chunks according to the current maximum packet
* size for the endpoint, which is a function of the configuration
* @start_frame: Returns the initial frame for isochronous transfers.
* @number_of_packets: Lists the number of ISO transfer buffers.
* @interval: Specifies the polling interval for interrupt or isochronous
- * transfers. The units are frames (milliseconds) for for full and low
+ * transfers. The units are frames (milliseconds) for full and low
* speed devices, and microframes (1/8 millisecond) for highspeed ones.
* @error_count: Returns the number of ISO transfers that reported errors.
* @context: For use in completion functions. This normally points to
* allocate a DMA buffer with usb_buffer_alloc() or call usb_buffer_map().
* When these transfer flags are provided, host controller drivers will
* attempt to use the dma addresses found in the transfer_dma and/or
- * setup_dma fields rather than determining a dma address themselves. (Note
- * that transfer_buffer and setup_packet must still be set because not all
- * host controllers use DMA, nor do virtual root hubs).
+ * setup_dma fields rather than determining a dma address themselves.
+ *
+ * Note that transfer_buffer must still be set if the controller
+ * does not support DMA (as indicated by bus.uses_dma) and when talking
+ * to root hub. If you have to trasfer between highmem zone and the device
+ * on such controller, create a bounce buffer or bail out with an error.
+ * If transfer_buffer cannot be set (is in highmem) and the controller is DMA
+ * capable, assign NULL to it, so that usbmon knows not to use the value.
+ * The setup_packet must always be set, so it cannot be located in highmem.
*
* Initialization:
*
extern void usb_unregister_notify(struct notifier_block *nb);
#ifdef DEBUG
-#define dbg(format, arg...) printk(KERN_DEBUG "%s: " format "\n" , \
- __FILE__ , ## arg)
+#define dbg(format, arg...) \
+ printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg)
#else
-#define dbg(format, arg...) do {} while (0)
+#define dbg(format, arg...) \
+do { \
+ if (0) \
+ printk(KERN_DEBUG "%s: " format "\n", __FILE__, ##arg); \
+} while (0)
#endif
-#define err(format, arg...) printk(KERN_ERR KBUILD_MODNAME ": " \
- format "\n" , ## arg)
+#define err(format, arg...) \
+ printk(KERN_ERR KBUILD_MODNAME ": " format "\n", ##arg)
/* debugfs stuff */
extern struct dentry *usb_debug_root;
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