1 #ifndef __USB_COMPAT_H__
2 #define __USB_COMPAT_H__
3 
4 #include <dm.h>
5 #include "usb.h"
6 
7 struct usb_hcd {
8 	void *hcd_priv;
9 };
10 
11 struct usb_host_endpoint {
12 	struct usb_endpoint_descriptor		desc;
13 	struct list_head urb_list;
14 	void *hcpriv;
15 };
16 
17 /*
18  * urb->transfer_flags:
19  *
20  * Note: URB_DIR_IN/OUT is automatically set in usb_submit_urb().
21  */
22 #define URB_SHORT_NOT_OK	0x0001	/* report short reads as errors */
23 #define URB_ZERO_PACKET		0x0040	/* Finish bulk OUT with short packet */
24 
25 struct urb;
26 
27 typedef void (*usb_complete_t)(struct urb *);
28 
29 struct urb {
30 	void *hcpriv;			/* private data for host controller */
31 	struct list_head urb_list;	/* list head for use by the urb's
32 					 * current owner */
33 	struct usb_device *dev;		/* (in) pointer to associated device */
34 	struct usb_host_endpoint *ep;	/* (internal) pointer to endpoint */
35 	unsigned int pipe;		/* (in) pipe information */
36 	int status;			/* (return) non-ISO status */
37 	unsigned int transfer_flags;	/* (in) URB_SHORT_NOT_OK | ...*/
38 	void *transfer_buffer;		/* (in) associated data buffer */
39 	dma_addr_t transfer_dma;	/* (in) dma addr for transfer_buffer */
40 	u32 transfer_buffer_length;	/* (in) data buffer length */
41 	u32 actual_length;		/* (return) actual transfer length */
42 	unsigned char *setup_packet;	/* (in) setup packet (control only) */
43 	int start_frame;		/* (modify) start frame (ISO) */
44 	usb_complete_t complete;	/* (in) completion routine */
45 };
46 
47 #define usb_hcd_link_urb_to_ep(hcd, urb)	({		\
48 	int ret = 0;						\
49 	list_add_tail(&urb->urb_list, &urb->ep->urb_list);	\
50 	ret; })
51 #define usb_hcd_unlink_urb_from_ep(hcd, urb)	list_del_init(&urb->urb_list)
52 #define usb_hcd_check_unlink_urb(hdc, urb, status)	0
53 
54 static inline void usb_hcd_giveback_urb(struct usb_hcd *hcd,
55 					struct urb *urb,
56 					int status)
57 {
58 	urb->status = status;
59 	if (urb->complete)
60 		urb->complete(urb);
61 }
62 
63 static inline int usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd,
64 					struct urb *urb)
65 {
66 	/* TODO: add cache invalidation here */
67 	return 0;
68 }
69 
70 #ifdef CONFIG_DM_USB
71 static inline struct usb_device *usb_dev_get_parent(struct usb_device *udev)
72 {
73 	struct udevice *parent = udev->dev->parent;
74 
75 	/*
76 	 * When called from usb-uclass.c: usb_scan_device() udev->dev points
77 	 * to the parent udevice, not the actual udevice belonging to the
78 	 * udev as the device is not instantiated yet.
79 	 *
80 	 * If dev is an usb-bus, then we are called from usb_scan_device() for
81 	 * an usb-device plugged directly into the root port, return NULL.
82 	 */
83 	if (device_get_uclass_id(udev->dev) == UCLASS_USB)
84 		return NULL;
85 
86 	/*
87 	 * If these 2 are not the same we are being called from
88 	 * usb_scan_device() and udev itself is the parent.
89 	 */
90 	if (dev_get_parent_priv(udev->dev) != udev)
91 		return udev;
92 
93 	/* We are being called normally, use the parent pointer */
94 	if (device_get_uclass_id(parent) == UCLASS_USB_HUB)
95 		return dev_get_parent_priv(parent);
96 
97 	return NULL;
98 }
99 #else
100 static inline struct usb_device *usb_dev_get_parent(struct usb_device *dev)
101 {
102 	return dev->parent;
103 }
104 #endif
105 
106 #endif /* __USB_COMPAT_H__ */
107