| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * MUSB OTG driver host defines |
| * |
| * Copyright 2005 Mentor Graphics Corporation |
| * Copyright (C) 2005-2006 by Texas Instruments |
| * Copyright (C) 2006-2007 Nokia Corporation |
| */ |
| |
| #ifndef _MUSB_HOST_H |
| #define _MUSB_HOST_H |
| |
| #include <linux/scatterlist.h> |
| |
| /* stored in "usb_host_endpoint.hcpriv" for scheduled endpoints */ |
| struct musb_qh { |
| struct usb_host_endpoint *hep; /* usbcore info */ |
| struct usb_device *dev; |
| struct musb_hw_ep *hw_ep; /* current binding */ |
| |
| struct list_head ring; /* of musb_qh */ |
| /* struct musb_qh *next; */ /* for periodic tree */ |
| u8 mux; /* qh multiplexed to hw_ep */ |
| |
| unsigned offset; /* in urb->transfer_buffer */ |
| unsigned segsize; /* current xfer fragment */ |
| |
| u8 type_reg; /* {rx,tx} type register */ |
| u8 intv_reg; /* {rx,tx} interval register */ |
| u8 addr_reg; /* device address register */ |
| u8 h_addr_reg; /* hub address register */ |
| u8 h_port_reg; /* hub port register */ |
| |
| u8 is_ready; /* safe to modify hw_ep */ |
| u8 type; /* XFERTYPE_* */ |
| u8 epnum; |
| u8 hb_mult; /* high bandwidth pkts per uf */ |
| u16 maxpacket; |
| u16 frame; /* for periodic schedule */ |
| unsigned iso_idx; /* in urb->iso_frame_desc[] */ |
| struct sg_mapping_iter sg_miter; /* for highmem in PIO mode */ |
| bool use_sg; /* to track urb using sglist */ |
| }; |
| |
| /* map from control or bulk queue head to the first qh on that ring */ |
| static inline struct musb_qh *first_qh(struct list_head *q) |
| { |
| if (list_empty(q)) |
| return NULL; |
| return list_entry(q->next, struct musb_qh, ring); |
| } |
| |
| |
| #if IS_ENABLED(CONFIG_USB_MUSB_HOST) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) |
| extern struct musb *hcd_to_musb(struct usb_hcd *); |
| extern irqreturn_t musb_h_ep0_irq(struct musb *); |
| extern int musb_host_alloc(struct musb *); |
| extern int musb_host_setup(struct musb *, int); |
| extern void musb_host_cleanup(struct musb *); |
| extern void musb_host_tx(struct musb *, u8); |
| extern void musb_host_rx(struct musb *, u8); |
| extern void musb_root_disconnect(struct musb *musb); |
| extern void musb_host_free(struct musb *); |
| extern void musb_host_cleanup(struct musb *); |
| extern void musb_host_tx(struct musb *, u8); |
| extern void musb_host_rx(struct musb *, u8); |
| extern void musb_root_disconnect(struct musb *musb); |
| extern void musb_host_resume_root_hub(struct musb *musb); |
| extern void musb_host_poke_root_hub(struct musb *musb); |
| extern int musb_port_suspend(struct musb *musb, bool do_suspend); |
| extern void musb_port_reset(struct musb *musb, bool do_reset); |
| extern void musb_host_finish_resume(struct work_struct *work); |
| #else |
| static inline struct musb *hcd_to_musb(struct usb_hcd *hcd) |
| { |
| return NULL; |
| } |
| |
| static inline irqreturn_t musb_h_ep0_irq(struct musb *musb) |
| { |
| return 0; |
| } |
| |
| static inline int musb_host_alloc(struct musb *musb) |
| { |
| return 0; |
| } |
| |
| static inline int musb_host_setup(struct musb *musb, int power_budget) |
| { |
| return 0; |
| } |
| |
| static inline void musb_host_cleanup(struct musb *musb) {} |
| static inline void musb_host_free(struct musb *musb) {} |
| static inline void musb_host_tx(struct musb *musb, u8 epnum) {} |
| static inline void musb_host_rx(struct musb *musb, u8 epnum) {} |
| static inline void musb_root_disconnect(struct musb *musb) {} |
| static inline void musb_host_resume_root_hub(struct musb *musb) {} |
| static inline void musb_host_poll_rh_status(struct musb *musb) {} |
| static inline void musb_host_poke_root_hub(struct musb *musb) {} |
| static inline int musb_port_suspend(struct musb *musb, bool do_suspend) |
| { |
| return 0; |
| } |
| static inline void musb_port_reset(struct musb *musb, bool do_reset) {} |
| static inline void musb_host_finish_resume(struct work_struct *work) {} |
| #endif |
| |
| struct usb_hcd; |
| |
| extern int musb_hub_status_data(struct usb_hcd *hcd, char *buf); |
| extern int musb_hub_control(struct usb_hcd *hcd, |
| u16 typeReq, u16 wValue, u16 wIndex, |
| char *buf, u16 wLength); |
| |
| static inline struct urb *next_urb(struct musb_qh *qh) |
| { |
| struct list_head *queue; |
| |
| if (!qh) |
| return NULL; |
| queue = &qh->hep->urb_list; |
| if (list_empty(queue)) |
| return NULL; |
| return list_entry(queue->next, struct urb, urb_list); |
| } |
| |
| #endif /* _MUSB_HOST_H */ |