/*-
 * Copyright (c) 2011 Anybots Inc
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * written by Akinori Furukoshi <moonlightakkiy@yahoo.ca>
 *  - ucom part is based on u3g.c
 *
 * 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 AUTHOR 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 AUTHOR 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 _IF_USEVAR_H_
#define _IF_USEVAR_H_

#define USIE_DCD                0x0001
#define USIE_DSR                0x0002
#define USIE_DTR                0x0004
#define USIE_RI                 0x0008
#define USIE_CTS                0x0100
#define USIE_RTS                0x0200

#define USIE_HIP_FRM_CHR        0x7e
#define USIE_HIP_ESC_CHR        0x7d
#define USIE_HIP_IF             0

#define USIE_HIPCNS_MIN         16      /* HIP + CnS + 2 framing char */
#define USIE_HIPCNS_MAX         261     /* HIP + max CnS 255 + 2 framing char */

#define USIE_CNFG_INDEX         0
#define USIE_IFACE_INDEX        0
#define USIE_IFACE_MAX          12
#define USIE_BUFSIZE            2048
#define USIE_MTU_MAX            1500
#define USIE_RXSZ_MAX           4096

/* USB control pipe request */
#define USIE_POWER              0x00
#define USIE_FW_ATTR            0x06
#define USIE_NMEA               0x07
#define USIE_LINK_STATE         0x22

/* firmware attr flags */
#define USIE_PM_AUTO            (1 << 1)
#define USIE_FW_DHCP            (1 << 3)        /* DHCP capable */

/* line state flags */
#define USIE_LS_DTR             (1 << 0)
#define USIE_LS_RTS             (1 << 1)

/* Host Interface Porotocol Header */
struct usie_hip {
        uint16_t len;
#define USIE_HIP_LEN_MASK       0x3fff
#define USIE_HIP_IP_LEN_MASK    0x07ff

        uint8_t id;
#define USIE_HIP_PAD            (1 << 7)
#define USIE_HIP_MASK           0x7f
#define USIE_HIP_SYNC2M         0x20    /* host -> modem */
#define USIE_HIP_DOWN           0x26
#define USIE_HIP_CNS2M          0x2b    /* h -> m */
#define USIE_HIP_CTX            0x3f
#define USIE_HIP_SYNC2H         0x60    /* h <- m */
#define USIE_HIP_RESTR          0x62
#define USIE_HIP_RCGI           0x64
#define USIE_HIP_CNS2H          0x6b    /* h <- m */
#define USIE_HIP_UMTS           0x78
#define USIE_HIP_IP             0x7f

        uint8_t param;
} __packed __aligned(4);

/* Control and Status Header */
struct usie_cns {
        uint16_t obj;                   /* object type */
#define USIE_CNS_OB_RSSI        0x1001  /* read RSSI */
#define USIE_CNS_OB_HW_DISABLE  0x1011  /* disable h/w */
#define USIE_CNS_OB_PW_SW       0x1071  /* power on/off */
#define USIE_CNS_OB_PROF_WRITE  0x7003  /* write profile */
#define USIE_CNS_OB_LINK_UPDATE 0x7004  /* dis/connect */
#define USIE_CNS_OB_PDP_READ    0x7006  /* read out IP addr */

        uint8_t op;                     /* operation type */
#define USIE_CNS_OP_ERR         (1 << 7)/* | == error */
#define USIE_CNS_OP_REQ         0x01    /* host -> modem */
#define USIE_CNS_OP_RSP         0x02    /* h <- m */
#define USIE_CNS_OP_SET         0x03    /* h -> m */
#define USIE_CNS_OP_ACK         0x04    /* h <- m */
#define USIE_CNS_OP_NOTIF_ON    0x05    /* h -> m */
#define USIE_CNS_OP_RSP_ON      0x06    /* h <- m */
#define USIE_CNS_OP_NOTIF       0x07    /* h <- m */
#define USIE_CNS_OP_NOTIF_OFF   0x08    /* h -> m */
#define USIE_CNS_OP_RSP_OFF     0x09    /* h <- m */
#define USIE_CNS_OP_REQ_CHG     0x0a    /* h -> m */
#define USIE_CNS_OP_RSP_CHG     0x0b    /* h <- m */

        uint8_t rsv0;                   /* reserved, always '0' */
        uint32_t id;                    /* caller ID */
/*
 * .id is to identify calling functions
 * h/w responses with the same .id used in request. Only '0' is reserved
 * for notification (asynchronous message generated by h/w without any
 * request). All other values are user defineable.
 */
#define USIE_CNS_ID_NOTIF       0x00000000      /* reserved */
#define USIE_CNS_ID_INIT        0x00000001
#define USIE_CNS_ID_STOP        0x00000002
#define USIE_CNS_ID_DNS         0x00000003
#define USIE_CNS_ID_RSSI        0x00000004

        uint8_t rsv1;                   /* reserved, always '0' */
        uint8_t len;                    /* length of param */
} __packed;

/*
 * CnS param attached to struct usie_cns
 * usie_cns.len is total size of this param
 * max 255
 */
#define USIE_CNS_PM_UP          0x01
#define USIE_CNS_PM_DOWN        0x00

/* Link Sense Indication data structure */
struct usie_lsi {
        uint8_t proto;
#define USIE_LSI_UMTS           0x01

        uint8_t pad0;
        uint16_t len;
        uint8_t area;
#define USIE_LSI_AREA_NO        0x00
#define USIE_LSI_AREA_NODATA    0x01

        uint8_t pad1[41];
        uint8_t state;
#define USIE_LSI_STATE_IDLE     0x00

        uint8_t pad2[33];
        uint8_t type;
#define USIE_LSI_IP4            0x00

        uint8_t pdp_addr_len;           /* PDP addr */
        uint8_t pdp_addr[16];
        uint8_t pad3[23];
        uint8_t dns1_addr_len;          /* DNS addr */
        uint8_t dns1_addr[16];
        uint8_t dns2_addr_len;
        uint8_t dns2_addr[16];
        uint8_t wins1_addr_len;         /* Wins addr */
        uint8_t wins1_addr[16];
        uint8_t wins2_addr_len;
        uint8_t wins2_addr[16];
        uint8_t pad4[4];
        uint8_t gw_addr_len;            /* GW addr */
        uint8_t gw_addr[16];
        uint8_t rsv[8];
} __packed;

struct usie_net_info {
        uint8_t addr_len;
        uint8_t pdp_addr[16];
        uint8_t dns1_addr[16];
        uint8_t dns2_addr[16];
        uint8_t gw_addr[16];
} __packed;

/* Tx/Rx IP packet descriptor */
struct usie_desc {
        struct usie_hip hip;
        uint16_t desc_type;
#define USIE_TYPE_MASK  0x03ff
#define USIE_IP_TX      0x0002
#define USIE_IP_RX      0x0202

        struct ether_header ethhdr;
} __packed;

enum {
        USIE_UC_STATUS,
        USIE_UC_RX,
        USIE_UC_TX,
        USIE_UC_N_XFER
};

enum {
        USIE_IF_STATUS,
        USIE_IF_RX,
        USIE_IF_TX,
        USIE_IF_N_XFER
};

struct usie_softc {
        struct ucom_super_softc sc_super_ucom;

#define USIE_UCOM_MAX   6
        struct ucom_softc sc_ucom[USIE_UCOM_MAX];
        uint8_t sc_uc_ifnum[USIE_UCOM_MAX];

        struct mtx sc_mtx;

        struct task sc_if_status_task;
        struct task sc_if_sync_task;
        struct usb_callout sc_if_sync_ch;

        struct usie_net_info sc_net;

        struct usie_desc sc_txd;

        struct usb_xfer *sc_uc_xfer[USIE_UCOM_MAX][USIE_UC_N_XFER];
        struct usb_xfer *sc_if_xfer[USIE_IF_N_XFER];

        if_t sc_ifp;
        struct usb_device *sc_udev;
        device_t sc_dev;

        struct mbuf *sc_rxm;

        uint16_t sc_if_ifnum;

        int16_t sc_rssi;

        uint8_t sc_msr;
        uint8_t sc_lsr;
        uint8_t sc_nucom;

        uint8_t sc_resp_temp[USIE_BUFSIZE] __aligned(4);
        uint8_t sc_status_temp[USIE_BUFSIZE] __aligned(4);
};

/* Some code assumptions */

extern uint8_t usie_assert[((sizeof(struct usie_hip) +
    sizeof(struct usie_lsi) + 1) <= USIE_BUFSIZE) ? 1 : -1];

extern uint8_t ucdc_assert[(sizeof(struct usb_cdc_notification)
     >= 16) ? 1 : -1];

#endif                                  /* _IF_USEVAR_H_ */