86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2020-21 Intel Corporation.
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*/
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#include "iosm_ipc_chnl_cfg.h"
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#include "iosm_ipc_imem_ops.h"
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#include "iosm_ipc_port.h"
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/* open logical channel for control communication */
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static int ipc_port_ctrl_start(struct wwan_port *port)
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{
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struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);
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int ret = 0;
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ipc_port->channel = ipc_imem_sys_port_open(ipc_port->ipc_imem,
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ipc_port->chl_id,
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IPC_HP_CDEV_OPEN);
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if (!ipc_port->channel)
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ret = -EIO;
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return ret;
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}
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/* close logical channel */
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static void ipc_port_ctrl_stop(struct wwan_port *port)
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{
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struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);
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ipc_imem_sys_port_close(ipc_port->ipc_imem, ipc_port->channel);
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}
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/* transfer control data to modem */
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static int ipc_port_ctrl_tx(struct wwan_port *port, struct sk_buff *skb)
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{
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struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);
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return ipc_imem_sys_cdev_write(ipc_port, skb);
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}
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static const struct wwan_port_ops ipc_wwan_ctrl_ops = {
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.start = ipc_port_ctrl_start,
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.stop = ipc_port_ctrl_stop,
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.tx = ipc_port_ctrl_tx,
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};
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/* Port init func */
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struct iosm_cdev *ipc_port_init(struct iosm_imem *ipc_imem,
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struct ipc_chnl_cfg ipc_port_cfg)
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{
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struct iosm_cdev *ipc_port = kzalloc(sizeof(*ipc_port), GFP_KERNEL);
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enum wwan_port_type port_type = ipc_port_cfg.wwan_port_type;
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enum ipc_channel_id chl_id = ipc_port_cfg.id;
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if (!ipc_port)
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return NULL;
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ipc_port->dev = ipc_imem->dev;
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ipc_port->pcie = ipc_imem->pcie;
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ipc_port->port_type = port_type;
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ipc_port->chl_id = chl_id;
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ipc_port->ipc_imem = ipc_imem;
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ipc_port->iosm_port = wwan_create_port(ipc_port->dev, port_type,
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&ipc_wwan_ctrl_ops, ipc_port);
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return ipc_port;
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}
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/* Port deinit func */
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void ipc_port_deinit(struct iosm_cdev *port[])
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{
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struct iosm_cdev *ipc_port;
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u8 ctrl_chl_nr;
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for (ctrl_chl_nr = 0; ctrl_chl_nr < IPC_MEM_MAX_CHANNELS;
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ctrl_chl_nr++) {
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if (port[ctrl_chl_nr]) {
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ipc_port = port[ctrl_chl_nr];
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wwan_remove_port(ipc_port->iosm_port);
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kfree(ipc_port);
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}
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}
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}
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