/*	$OpenBSD: dwc2var.h,v 1.19 2017/09/05 14:01:03 otto Exp $	*/
/*	$NetBSD: dwc2var.h,v 1.3 2013/10/22 12:57:40 skrll Exp $	*/

/*-
 * Copyright (c) 2013 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Nick Hudson
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef	_DWC2VAR_H_
#define	_DWC2VAR_H_

#include <sys/pool.h>

struct task;

#define DWC2_MAXISOCPACKETS	16
struct dwc2_hsotg;
struct dwc2_qtd;

struct dwc2_xfer {
	struct usbd_xfer xfer;			/* Needs to be first */

	struct dwc2_hcd_urb *urb;
	int packet_count;

	TAILQ_ENTRY(dwc2_xfer) xnext;		/* list of complete xfers */

	u_int32_t flags;
#define DWC2_XFER_ABORTING	0x0001	/* xfer is aborting. */
#define DWC2_XFER_ABORTWAIT	0x0002	/* abort completion is being awaited. */
};

struct dwc2_pipe {
	struct usbd_pipe pipe;		/* Must be first */

	/* Current transfer */
	void *priv;			/* QH */

	 /* DMA buffer for control endpoint requests */
	struct usb_dma req_dma;
};


#define	DWC2_BUS2SC(bus)	((void *)(bus))
#define	DWC2_PIPE2SC(pipe)	DWC2_BUS2SC((pipe)->device->bus)
#define	DWC2_XFER2SC(xfer)	DWC2_PIPE2SC((xfer)->pipe)
#define	DWC2_DPIPE2SC(d)	DWC2_BUS2SC((d)->pipe.device->bus)

#define	DWC2_XFER2DXFER(x)	(struct dwc2_xfer *)(x)

#define	DWC2_XFER2DPIPE(x)	(struct dwc2_pipe *)(x)->pipe;
#define	DWC2_PIPE2DPIPE(p)	(struct dwc2_pipe *)(p)


typedef struct dwc2_softc {
	struct usbd_bus		sc_bus;

 	bus_space_tag_t		sc_iot;
 	bus_space_handle_t	sc_ioh;
	struct dwc2_core_params *sc_params;
	struct dwc2_core_dma_config *sc_dma_config;

	/*
	 * Private
	 */

	struct dwc2_hsotg *sc_hsotg;

	bool sc_hcdenabled;
	void *sc_rhc_si;

	struct usbd_xfer *sc_intrxfer;

	struct device *sc_child;		/* /dev/usb# device */
	char sc_dying;
#if 0
	struct usb_dma_reserve sc_dma_reserve;
#endif

	char sc_vendor[32];		/* vendor string for root hub */
	int sc_id_vendor;		/* vendor ID for root hub */

	TAILQ_HEAD(, dwc2_xfer) sc_complete;	/* complete transfers */

	uint8_t sc_addr;		/* device address */
	uint8_t sc_conf;		/* device configuration */

	struct pool sc_xferpool;
	struct pool sc_qhpool;
	struct pool sc_qtdpool;

} dwc2_softc_t;

int		dwc2_init(struct dwc2_softc *);
int		dwc2_dma_config(struct dwc2_softc *,
				struct dwc2_core_dma_config *);
int		dwc2_intr(void *);
int		dwc2_detach(dwc2_softc_t *, int);

void		dwc2_worker(struct task *, void *);

void		dwc2_host_complete(struct dwc2_hsotg *, struct dwc2_qtd *,
				   int);

#define DWC2_READ_4(hsotg, reg) \
    bus_space_read_4((hsotg)->hsotg_sc->sc_iot, (hsotg)->hsotg_sc->sc_ioh, \
    (reg))
#define DWC2_WRITE_4(hsotg, reg, data)  \
    bus_space_write_4((hsotg)->hsotg_sc->sc_iot, (hsotg)->hsotg_sc->sc_ioh, \
    (reg), (data))

static inline void
dwc2_root_intr(dwc2_softc_t *sc)
{

	softintr_schedule(sc->sc_rhc_si);
}

// XXX compat

#define	ENOSR		90

#ifndef mstohz
#define mstohz(ms) \
	(__predict_false((ms) >= 0x20000) ? \
	    ((ms +0u) / 1000u) * hz : \
	    ((ms +0u) * hz) / 1000u)
#endif

#define	timeout_reset(x, t, f, a) \
do { \
	timeout_set((x), (f), (a)); \
	timeout_add((x), (t)); \
} while (0)

#define	device_xname(d)	((d)->dv_xname)

#endif	/* _DWC_OTGVAR_H_ */
