musb_host.h (3825B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * MUSB OTG driver host defines 4 * 5 * Copyright 2005 Mentor Graphics Corporation 6 * Copyright (C) 2005-2006 by Texas Instruments 7 * Copyright (C) 2006-2007 Nokia Corporation 8 */ 9 10#ifndef _MUSB_HOST_H 11#define _MUSB_HOST_H 12 13#include <linux/scatterlist.h> 14 15/* stored in "usb_host_endpoint.hcpriv" for scheduled endpoints */ 16struct musb_qh { 17 struct usb_host_endpoint *hep; /* usbcore info */ 18 struct usb_device *dev; 19 struct musb_hw_ep *hw_ep; /* current binding */ 20 21 struct list_head ring; /* of musb_qh */ 22 /* struct musb_qh *next; */ /* for periodic tree */ 23 u8 mux; /* qh multiplexed to hw_ep */ 24 25 unsigned offset; /* in urb->transfer_buffer */ 26 unsigned segsize; /* current xfer fragment */ 27 28 u8 type_reg; /* {rx,tx} type register */ 29 u8 intv_reg; /* {rx,tx} interval register */ 30 u8 addr_reg; /* device address register */ 31 u8 h_addr_reg; /* hub address register */ 32 u8 h_port_reg; /* hub port register */ 33 34 u8 is_ready; /* safe to modify hw_ep */ 35 u8 type; /* XFERTYPE_* */ 36 u8 epnum; 37 u8 hb_mult; /* high bandwidth pkts per uf */ 38 u16 maxpacket; 39 u16 frame; /* for periodic schedule */ 40 unsigned iso_idx; /* in urb->iso_frame_desc[] */ 41 struct sg_mapping_iter sg_miter; /* for highmem in PIO mode */ 42 bool use_sg; /* to track urb using sglist */ 43}; 44 45/* map from control or bulk queue head to the first qh on that ring */ 46static inline struct musb_qh *first_qh(struct list_head *q) 47{ 48 if (list_empty(q)) 49 return NULL; 50 return list_entry(q->next, struct musb_qh, ring); 51} 52 53 54#if IS_ENABLED(CONFIG_USB_MUSB_HOST) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) 55extern struct musb *hcd_to_musb(struct usb_hcd *); 56extern irqreturn_t musb_h_ep0_irq(struct musb *); 57extern int musb_host_alloc(struct musb *); 58extern int musb_host_setup(struct musb *, int); 59extern void musb_host_cleanup(struct musb *); 60extern void musb_host_tx(struct musb *, u8); 61extern void musb_host_rx(struct musb *, u8); 62extern void musb_root_disconnect(struct musb *musb); 63extern void musb_host_free(struct musb *); 64extern void musb_host_resume_root_hub(struct musb *musb); 65extern void musb_host_poke_root_hub(struct musb *musb); 66extern int musb_port_suspend(struct musb *musb, bool do_suspend); 67extern void musb_port_reset(struct musb *musb, bool do_reset); 68extern void musb_host_finish_resume(struct work_struct *work); 69#else 70static inline struct musb *hcd_to_musb(struct usb_hcd *hcd) 71{ 72 return NULL; 73} 74 75static inline irqreturn_t musb_h_ep0_irq(struct musb *musb) 76{ 77 return 0; 78} 79 80static inline int musb_host_alloc(struct musb *musb) 81{ 82 return 0; 83} 84 85static inline int musb_host_setup(struct musb *musb, int power_budget) 86{ 87 return 0; 88} 89 90static inline void musb_host_cleanup(struct musb *musb) {} 91static inline void musb_host_free(struct musb *musb) {} 92static inline void musb_host_tx(struct musb *musb, u8 epnum) {} 93static inline void musb_host_rx(struct musb *musb, u8 epnum) {} 94static inline void musb_root_disconnect(struct musb *musb) {} 95static inline void musb_host_resume_root_hub(struct musb *musb) {} 96static inline void musb_host_poke_root_hub(struct musb *musb) {} 97static inline int musb_port_suspend(struct musb *musb, bool do_suspend) 98{ 99 return 0; 100} 101static inline void musb_port_reset(struct musb *musb, bool do_reset) {} 102static inline void musb_host_finish_resume(struct work_struct *work) {} 103#endif 104 105struct usb_hcd; 106 107extern int musb_hub_status_data(struct usb_hcd *hcd, char *buf); 108extern int musb_hub_control(struct usb_hcd *hcd, 109 u16 typeReq, u16 wValue, u16 wIndex, 110 char *buf, u16 wLength); 111 112static inline struct urb *next_urb(struct musb_qh *qh) 113{ 114 struct list_head *queue; 115 116 if (!qh) 117 return NULL; 118 queue = &qh->hep->urb_list; 119 if (list_empty(queue)) 120 return NULL; 121 return list_entry(queue->next, struct urb, urb_list); 122} 123 124#endif /* _MUSB_HOST_H */