1 files changed, 72 insertions, 7 deletions

diff --git a/include/linux/usb.h b/include/linux/usb.h
index 4f33a58fa9d1..c5c8f169d3cf 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -52,6 +52,7 @@ struct ep_device;
  * @ep_dev: ep_device for sysfs info
  * @extra: descriptors following this endpoint in the configuration
  * @extralen: how many bytes of "extra" are valid
+ * @enabled: URBs may be submitted to this endpoint
  *
  * USB requests are always queued to a given endpoint, identified by a
  * descriptor within an active interface in a given USB configuration.
@@ -64,6 +65,7 @@ struct usb_host_endpoint {
 
         unsigned char *extra;   /* Extra descriptors */
         int extralen;
+        int enabled;
 };
 
 /* host-side wrapper for one interface setting's parsed descriptors */
@@ -344,6 +346,11 @@ struct usb_tt;
  *
  * Usbcore drivers should not set usbdev->state directly.  Instead use
  * usb_set_device_state().
+ *
+ * @authorized: (user space) policy determines if we authorize this
+ *              device to be used or not. By default, wired USB
+ *              devices are authorized. WUSB devices are not, until we
+ *              authorize them from user space. FIXME -- complete doc
  */
 struct usb_device {
         int             devnum;         /* Address on USB bus */
@@ -376,8 +383,11 @@ struct usb_device {
         u8 portnum;                     /* Parent port number (origin 1) */
         u8 level;                       /* Number of USB hub ancestors */
 
+        unsigned can_submit:1;          /* URBs may be submitted */
         unsigned discon_suspended:1;    /* Disconnected while suspended */
         unsigned have_langid:1;         /* whether string_langid is valid */
+        unsigned authorized:1;          /* Policy has determined we can use it */
+        unsigned wusb:1;                /* Device is Wireless USB */
         int string_langid;              /* language ID for strings */
 
         /* static strings from the device */
@@ -405,6 +415,7 @@ struct usb_device {
 
         int pm_usage_cnt;               /* usage counter for autosuspend */
         u32 quirks;                     /* quirks of the whole device */
+        atomic_t urbnum;                /* number of URBs submitted for the whole device */
 
 #ifdef CONFIG_PM
         struct delayed_work autosuspend; /* for delayed autosuspends */
@@ -419,6 +430,7 @@ struct usb_device {
         unsigned persist_enabled:1;     /* USB_PERSIST enabled for this dev */
         unsigned autosuspend_disabled:1; /* autosuspend and autoresume */
         unsigned autoresume_disabled:1;  /*  disabled by the user */
+        unsigned skip_sys_resume:1;     /* skip the next system resume */
 #endif
 };
 #define to_usb_device(d) container_of(d, struct usb_device, dev)
@@ -555,6 +567,29 @@ static inline int usb_make_path (struct usb_device *dev, char *buf,
 /*-------------------------------------------------------------------------*/
 
 /**
+ * usb_endpoint_num - get the endpoint's number
+ * @epd: endpoint to be checked
+ *
+ * Returns @epd's number: 0 to 15.
+ */
+static inline int usb_endpoint_num(const struct usb_endpoint_descriptor *epd)
+{
+        return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+}
+
+/**
+ * usb_endpoint_type - get the endpoint's transfer type
+ * @epd: endpoint to be checked
+ *
+ * Returns one of USB_ENDPOINT_XFER_{CONTROL, ISOC, BULK, INT} according
+ * to @epd's transfer type.
+ */
+static inline int usb_endpoint_type(const struct usb_endpoint_descriptor *epd)
+{
+        return epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+}
+
+/**
  * usb_endpoint_dir_in - check if the endpoint has IN direction
  * @epd: endpoint to be checked
  *
@@ -996,6 +1031,8 @@ extern int usb_disabled(void);
 
 /*
  * urb->transfer_flags:
+ *
+ * Note: URB_DIR_IN/OUT is automatically set in usb_submit_urb().
  */
 #define URB_SHORT_NOT_OK        0x0001  /* report short reads as errors */
 #define URB_ISO_ASAP            0x0002  /* iso-only, urb->start_frame
@@ -1008,6 +1045,10 @@ extern int usb_disabled(void);
                                          * needed */
 #define URB_FREE_BUFFER         0x0100  /* Free transfer buffer with the URB */
 
+#define URB_DIR_IN              0x0200  /* Transfer from device to host */
+#define URB_DIR_OUT             0
+#define URB_DIR_MASK            URB_DIR_IN
+
 struct usb_iso_packet_descriptor {
         unsigned int offset;
         unsigned int length;            /* expected length */
@@ -1037,6 +1078,8 @@ typedef void (*usb_complete_t)(struct urb *);
  * @urb_list: For use by current owner of the URB.
  * @anchor_list: membership in the list of an anchor
  * @anchor: to anchor URBs to a common mooring
+ * @ep: Points to the endpoint's data structure.  Will eventually
+ *      replace @pipe.
  * @pipe: Holds endpoint number, direction, type, and more.
  *      Create these values with the eight macros available;
  *      usb_{snd,rcv}TYPEpipe(dev,endpoint), where the TYPE is "ctrl"
@@ -1201,10 +1244,10 @@ struct urb
 {
         /* private: usb core and host controller only fields in the urb */
         struct kref kref;               /* reference count of the URB */
-        spinlock_t lock;                /* lock for the URB */
         void *hcpriv;                   /* private data for host controller */
         atomic_t use_count;             /* concurrent submissions counter */
         u8 reject;                      /* submissions will fail */
+        int unlinked;                   /* unlink error code */
 
         /* public: documented fields in the urb that can be used by drivers */
         struct list_head urb_list;      /* list head for use by the urb's
@@ -1212,6 +1255,7 @@ struct urb
         struct list_head anchor_list;   /* the URB may be anchored by the driver */
         struct usb_anchor *anchor;
         struct usb_device *dev;         /* (in) pointer to associated device */
+        struct usb_host_endpoint *ep;   /* (internal) pointer to endpoint struct */
         unsigned int pipe;              /* (in) pipe information */
         int status;                     /* (return) non-ISO status */
         unsigned int transfer_flags;    /* (in) URB_SHORT_NOT_OK | ...*/
@@ -1257,7 +1301,6 @@ static inline void usb_fill_control_urb (struct urb *urb,
                                          usb_complete_t complete_fn,
                                          void *context)
 {
-        spin_lock_init(&urb->lock);
         urb->dev = dev;
         urb->pipe = pipe;
         urb->setup_packet = setup_packet;
@@ -1288,7 +1331,6 @@ static inline void usb_fill_bulk_urb (struct urb *urb,
                                       usb_complete_t complete_fn,
                                       void *context)
 {
-        spin_lock_init(&urb->lock);
         urb->dev = dev;
         urb->pipe = pipe;
         urb->transfer_buffer = transfer_buffer;
@@ -1324,7 +1366,6 @@ static inline void usb_fill_int_urb (struct urb *urb,
                                      void *context,
                                      int interval)
 {
-        spin_lock_init(&urb->lock);
         urb->dev = dev;
         urb->pipe = pipe;
         urb->transfer_buffer = transfer_buffer;
@@ -1352,6 +1393,30 @@ extern void usb_unanchor_urb(struct urb *urb);
 extern int usb_wait_anchor_empty_timeout(struct usb_anchor *anchor,
                                          unsigned int timeout);
 
+/**
+ * usb_urb_dir_in - check if an URB describes an IN transfer
+ * @urb: URB to be checked
+ *
+ * Returns 1 if @urb describes an IN transfer (device-to-host),
+ * otherwise 0.
+ */
+static inline int usb_urb_dir_in(struct urb *urb)
+{
+        return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_IN;
+}
+
+/**
+ * usb_urb_dir_out - check if an URB describes an OUT transfer
+ * @urb: URB to be checked
+ *
+ * Returns 1 if @urb describes an OUT transfer (host-to-device),
+ * otherwise 0.
+ */
+static inline int usb_urb_dir_out(struct urb *urb)
+{
+        return (urb->transfer_flags & URB_DIR_MASK) == URB_DIR_OUT;
+}
+
 void *usb_buffer_alloc (struct usb_device *dev, size_t size,
         gfp_t mem_flags, dma_addr_t *dma);
 void usb_buffer_free (struct usb_device *dev, size_t size,
@@ -1364,13 +1429,13 @@ void usb_buffer_unmap (struct urb *urb);
 #endif
 
 struct scatterlist;
-int usb_buffer_map_sg(const struct usb_device *dev, unsigned pipe,
+int usb_buffer_map_sg(const struct usb_device *dev, int is_in,
                       struct scatterlist *sg, int nents);
 #if 0
-void usb_buffer_dmasync_sg(const struct usb_device *dev, unsigned pipe,
+void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in,
                            struct scatterlist *sg, int n_hw_ents);
 #endif
-void usb_buffer_unmap_sg(const struct usb_device *dev, unsigned pipe,
+void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in,
                          struct scatterlist *sg, int n_hw_ents);
 
 /*-------------------------------------------------------------------*