cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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gadget.h (5140B)

      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 - https://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
     18struct dwc3;
     19#define to_dwc3_ep(ep)		(container_of(ep, struct dwc3_ep, endpoint))
     20#define gadget_to_dwc(g)	(dev_get_platdata(&g->dev))
     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/* Frame/Microframe Number Mask */
     58#define DWC3_FRNUMBER_MASK		0x3fff
     59/* -------------------------------------------------------------------------- */
     60
     61#define to_dwc3_request(r)	(container_of(r, struct dwc3_request, request))
     62
     63/**
     64 * next_request - gets the next request on the given list
     65 * @list: the request list to operate on
     66 *
     67 * Caller should take care of locking. This function return %NULL or the first
     68 * request available on @list.
     69 */
     70static inline struct dwc3_request *next_request(struct list_head *list)
     71{
     72	return list_first_entry_or_null(list, struct dwc3_request, list);
     73}
     74
     75/**
     76 * dwc3_gadget_move_started_request - move @req to the started_list
     77 * @req: the request to be moved
     78 *
     79 * Caller should take care of locking. This function will move @req from its
     80 * current list to the endpoint's started_list.
     81 */
     82static inline void dwc3_gadget_move_started_request(struct dwc3_request *req)
     83{
     84	struct dwc3_ep		*dep = req->dep;
     85
     86	req->status = DWC3_REQUEST_STATUS_STARTED;
     87	list_move_tail(&req->list, &dep->started_list);
     88}
     89
     90/**
     91 * dwc3_gadget_move_cancelled_request - move @req to the cancelled_list
     92 * @req: the request to be moved
     93 * @reason: cancelled reason for the dwc3 request
     94 *
     95 * Caller should take care of locking. This function will move @req from its
     96 * current list to the endpoint's cancelled_list.
     97 */
     98static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req,
     99		unsigned int reason)
    100{
    101	struct dwc3_ep		*dep = req->dep;
    102
    103	req->status = reason;
    104	list_move_tail(&req->list, &dep->cancelled_list);
    105}
    106
    107void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
    108		int status);
    109
    110void dwc3_ep0_interrupt(struct dwc3 *dwc,
    111		const struct dwc3_event_depevt *event);
    112void dwc3_ep0_out_start(struct dwc3 *dwc);
    113void dwc3_ep0_end_control_data(struct dwc3 *dwc, struct dwc3_ep *dep);
    114void dwc3_ep0_stall_and_restart(struct dwc3 *dwc);
    115int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
    116int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
    117int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
    118		gfp_t gfp_flags);
    119int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol);
    120void dwc3_ep0_send_delayed_status(struct dwc3 *dwc);
    121void dwc3_stop_active_transfer(struct dwc3_ep *dep, bool force, bool interrupt);
    122
    123/**
    124 * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
    125 * @dep: dwc3 endpoint
    126 *
    127 * Caller should take care of locking. Returns the transfer resource
    128 * index for a given endpoint.
    129 */
    130static inline void dwc3_gadget_ep_get_transfer_index(struct dwc3_ep *dep)
    131{
    132	u32			res_id;
    133
    134	res_id = dwc3_readl(dep->regs, DWC3_DEPCMD);
    135	dep->resource_index = DWC3_DEPCMD_GET_RSC_IDX(res_id);
    136}
    137
    138/**
    139 * dwc3_gadget_dctl_write_safe - write to DCTL safe from link state change
    140 * @dwc: pointer to our context structure
    141 * @value: value to write to DCTL
    142 *
    143 * Use this function when doing read-modify-write to DCTL. It will not
    144 * send link state change request.
    145 */
    146static inline void dwc3_gadget_dctl_write_safe(struct dwc3 *dwc, u32 value)
    147{
    148	value &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
    149	dwc3_writel(dwc->regs, DWC3_DCTL, value);
    150}
    151
    152#endif /* __DRIVERS_USB_DWC3_GADGET_H */