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#ifndef __USB_COMPAT_H__
#define __USB_COMPAT_H__
#include "usb.h"
struct usb_hcd {
void *hcd_priv;
};
struct usb_host_endpoint {
struct usb_endpoint_descriptor desc;
struct list_head urb_list;
void *hcpriv;
};
/*
* 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_ZERO_PACKET 0x0040 /* Finish bulk OUT with short packet */
struct urb;
typedef void (*usb_complete_t)(struct urb *);
struct urb {
void *hcpriv; /* private data for host controller */
struct list_head urb_list; /* list head for use by the urb's
* current owner */
struct usb_device *dev; /* (in) pointer to associated device */
struct usb_host_endpoint *ep; /* (internal) pointer to endpoint */
unsigned int pipe; /* (in) pipe information */
int status; /* (return) non-ISO status */
unsigned int transfer_flags; /* (in) URB_SHORT_NOT_OK | ...*/
void *transfer_buffer; /* (in) associated data buffer */
dma_addr_t transfer_dma; /* (in) dma addr for transfer_buffer */
u32 transfer_buffer_length; /* (in) data buffer length */
u32 actual_length; /* (return) actual transfer length */
unsigned char *setup_packet; /* (in) setup packet (control only) */
int start_frame; /* (modify) start frame (ISO) */
usb_complete_t complete; /* (in) completion routine */
};
#define usb_hcd_link_urb_to_ep(hcd, urb) ({ \
int ret = 0; \
list_add_tail(&urb->urb_list, &urb->ep->urb_list); \
ret; })
#define usb_hcd_unlink_urb_from_ep(hcd, urb) list_del_init(&urb->urb_list)
static inline void usb_hcd_giveback_urb(struct usb_hcd *hcd,
struct urb *urb,
int status)
{
urb->status = status;
if (urb->complete)
urb->complete(urb);
}
static inline int usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd,
struct urb *urb)
{
/* TODO: add cache invalidation here */
return 0;
}
static inline u16 find_tt(struct usb_device *dev)
{
u8 chid;
u8 hub;
/* Find out the nearest parent which is high speed */
while (dev->parent->parent != NULL)
if (dev->parent->speed != USB_SPEED_HIGH)
dev = dev->parent;
else
break;
/* determine the port address at that hub */
hub = dev->parent->devnum;
for (chid = 0; chid < USB_MAXCHILDREN; chid++)
if (dev->parent->children[chid] == dev)
break;
return (hub << 8) | chid;
}
#endif /* __USB_COMPAT_H__ */
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