// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2020-21 Intel Corporation.
 */

#include "iosm_ipc_chnl_cfg.h"
#include "iosm_ipc_imem_ops.h"
#include "iosm_ipc_port.h"

/* open logical channel for control communication */
static int ipc_port_ctrl_start(struct wwan_port *port)
{
        struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);
        int ret = 0;

        ipc_port->channel = ipc_imem_sys_port_open(ipc_port->ipc_imem,
                                                   ipc_port->chl_id,
                                                   IPC_HP_CDEV_OPEN);
        if (!ipc_port->channel)
                ret = -EIO;

        return ret;
}

/* close logical channel */
static void ipc_port_ctrl_stop(struct wwan_port *port)
{
        struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);

        ipc_imem_sys_port_close(ipc_port->ipc_imem, ipc_port->channel);
}

/* transfer control data to modem */
static int ipc_port_ctrl_tx(struct wwan_port *port, struct sk_buff *skb)
{
        struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);

        return ipc_imem_sys_cdev_write(ipc_port, skb);
}

static const struct wwan_port_ops ipc_wwan_ctrl_ops = {
        .start = ipc_port_ctrl_start,
        .stop = ipc_port_ctrl_stop,
        .tx = ipc_port_ctrl_tx,
};

/* Port init func */
struct iosm_cdev *ipc_port_init(struct iosm_imem *ipc_imem,
                                struct ipc_chnl_cfg ipc_port_cfg)
{
        struct iosm_cdev *ipc_port = kzalloc_obj(*ipc_port);
        enum wwan_port_type port_type = ipc_port_cfg.wwan_port_type;
        enum ipc_channel_id chl_id = ipc_port_cfg.id;

        if (!ipc_port)
                return NULL;

        ipc_port->dev = ipc_imem->dev;
        ipc_port->pcie = ipc_imem->pcie;

        ipc_port->port_type = port_type;
        ipc_port->chl_id = chl_id;
        ipc_port->ipc_imem = ipc_imem;

        ipc_port->iosm_port = wwan_create_port(ipc_port->dev, port_type,
                                               &ipc_wwan_ctrl_ops, NULL,
                                               ipc_port);

        return ipc_port;
}

/* Port deinit func */
void ipc_port_deinit(struct iosm_cdev *port[])
{
        struct iosm_cdev *ipc_port;
        u8 ctrl_chl_nr;

        for (ctrl_chl_nr = 0; ctrl_chl_nr < IPC_MEM_MAX_CHANNELS;
             ctrl_chl_nr++) {
                if (port[ctrl_chl_nr]) {
                        ipc_port = port[ctrl_chl_nr];
                        wwan_remove_port(ipc_port->iosm_port);
                        kfree(ipc_port);
                }
        }
}