drivers/usb/dwc3/gadget.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * gadget.h - DesignWare USB3 DRD Gadget Header
   4  *
   5  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
   6  *
   7  * Authors: Felipe Balbi <balbi@ti.com>,
   8  *          Sebastian Andrzej Siewior <bigeasy@linutronix.de>
   9  */
  10
  11 #ifndef __DRIVERS_USB_DWC3_GADGET_H
  12 #define __DRIVERS_USB_DWC3_GADGET_H
  13
  14 #include <linux/list.h>
  15 #include <linux/usb/gadget.h>
  16 #include "io.h"
  17
  18 struct dwc3;
  19 #define to_dwc3_ep(ep)          (container_of(ep, struct dwc3_ep, endpoint))
  20 #define gadget_to_dwc(g)        (container_of(g, struct dwc3, gadget))
  21
  22 /* DEPCFG parameter 1 */
  23 #define DWC3_DEPCFG_INT_NUM(n)          (((n) & 0x1f) << 0)
  24 #define DWC3_DEPCFG_XFER_COMPLETE_EN    BIT(8)
  25 #define DWC3_DEPCFG_XFER_IN_PROGRESS_EN BIT(9)
  26 #define DWC3_DEPCFG_XFER_NOT_READY_EN   BIT(10)
  27 #define DWC3_DEPCFG_FIFO_ERROR_EN       BIT(11)
  28 #define DWC3_DEPCFG_STREAM_EVENT_EN     BIT(13)
  29 #define DWC3_DEPCFG_BINTERVAL_M1(n)     (((n) & 0xff) << 16)
  30 #define DWC3_DEPCFG_STREAM_CAPABLE      BIT(24)
  31 #define DWC3_DEPCFG_EP_NUMBER(n)        (((n) & 0x1f) << 25)
  32 #define DWC3_DEPCFG_BULK_BASED          BIT(30)
  33 #define DWC3_DEPCFG_FIFO_BASED          BIT(31)
  34
  35 /* DEPCFG parameter 0 */
  36 #define DWC3_DEPCFG_EP_TYPE(n)          (((n) & 0x3) << 1)
  37 #define DWC3_DEPCFG_MAX_PACKET_SIZE(n)  (((n) & 0x7ff) << 3)
  38 #define DWC3_DEPCFG_FIFO_NUMBER(n)      (((n) & 0x1f) << 17)
  39 #define DWC3_DEPCFG_BURST_SIZE(n)       (((n) & 0xf) << 22)
  40 #define DWC3_DEPCFG_DATA_SEQ_NUM(n)     ((n) << 26)
  41 /* This applies for core versions earlier than 1.94a */
  42 #define DWC3_DEPCFG_IGN_SEQ_NUM         BIT(31)
  43 /* These apply for core versions 1.94a and later */
  44 #define DWC3_DEPCFG_ACTION_INIT         (0 << 30)
  45 #define DWC3_DEPCFG_ACTION_RESTORE      BIT(30)
  46 #define DWC3_DEPCFG_ACTION_MODIFY       (2 << 30)
  47
  48 /* DEPXFERCFG parameter 0 */
  49 #define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff)
  50
  51 /* U1 Device exit Latency */
  52 #define DWC3_DEFAULT_U1_DEV_EXIT_LAT    0x0A    /* Less then 10 microsec */
  53
  54 /* U2 Device exit Latency */
  55 #define DWC3_DEFAULT_U2_DEV_EXIT_LAT    0x1FF   /* Less then 511 microsec */
  56
  57 /* -------------------------------------------------------------------------- */
  58
  59 #define to_dwc3_request(r)      (container_of(r, struct dwc3_request, request))
  60
  61 /**
  62  * next_request - gets the next request on the given list
  63  * @list: the request list to operate on
  64  *
  65  * Caller should take care of locking. This function return %NULL or the first
  66  * request available on @list.
  67  */
  68 static inline struct dwc3_request *next_request(struct list_head *list)
  69 {
  70         return list_first_entry_or_null(list, struct dwc3_request, list);
  71 }
  72
  73 /**
  74  * dwc3_gadget_move_started_request - move @req to the started_list
  75  * @req: the request to be moved
  76  *
  77  * Caller should take care of locking. This function will move @req from its
  78  * current list to the endpoint's started_list.
  79  */
  80 static inline void dwc3_gadget_move_started_request(struct dwc3_request *req)
  81 {
  82         struct dwc3_ep          *dep = req->dep;
  83
  84         req->status = DWC3_REQUEST_STATUS_STARTED;
  85         list_move_tail(&req->list, &dep->started_list);
  86 }
  87
  88 /**
  89  * dwc3_gadget_move_cancelled_request - move @req to the cancelled_list
  90  * @req: the request to be moved
  91  *
  92  * Caller should take care of locking. This function will move @req from its
  93  * current list to the endpoint's cancelled_list.
  94  */
  95 static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req)
  96 {
  97         struct dwc3_ep          *dep = req->dep;
  98
  99         req->status = DWC3_REQUEST_STATUS_CANCELLED;
 100         list_move_tail(&req->list, &dep->cancelled_list);
 101 }
 102
 103 void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
 104                 int status);
 105
 106 void dwc3_ep0_interrupt(struct dwc3 *dwc,
 107                 const struct dwc3_event_depevt *event);
 108 void dwc3_ep0_out_start(struct dwc3 *dwc);
 109 int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
 110 int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
 111 int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
 112                 gfp_t gfp_flags);
 113 int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol);
 114
 115 /**
 116  * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
 117  * @dep: dwc3 endpoint
 118  *
 119  * Caller should take care of locking. Returns the transfer resource
 120  * index for a given endpoint.
 121  */
 122 static inline void dwc3_gadget_ep_get_transfer_index(struct dwc3_ep *dep)
 123 {
 124         u32                     res_id;
 125
 126         res_id = dwc3_readl(dep->regs, DWC3_DEPCMD);
 127         dep->resource_index = DWC3_DEPCMD_GET_RSC_IDX(res_id);
 128 }
 129
 130 #endif /* __DRIVERS_USB_DWC3_GADGET_H */