1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2020-21 Intel Corporation.
6 #include "iosm_ipc_chnl_cfg.h"
7 #include "iosm_ipc_imem_ops.h"
8 #include "iosm_ipc_port.h"
10 /* open logical channel for control communication */
11 static int ipc_port_ctrl_start(struct wwan_port *port)
13 struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);
16 ipc_port->channel = ipc_imem_sys_port_open(ipc_port->ipc_imem,
19 if (!ipc_port->channel)
25 /* close logical channel */
26 static void ipc_port_ctrl_stop(struct wwan_port *port)
28 struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);
30 ipc_imem_sys_port_close(ipc_port->ipc_imem, ipc_port->channel);
33 /* transfer control data to modem */
34 static int ipc_port_ctrl_tx(struct wwan_port *port, struct sk_buff *skb)
36 struct iosm_cdev *ipc_port = wwan_port_get_drvdata(port);
38 return ipc_imem_sys_cdev_write(ipc_port, skb);
41 static const struct wwan_port_ops ipc_wwan_ctrl_ops = {
42 .start = ipc_port_ctrl_start,
43 .stop = ipc_port_ctrl_stop,
44 .tx = ipc_port_ctrl_tx,
48 struct iosm_cdev *ipc_port_init(struct iosm_imem *ipc_imem,
49 struct ipc_chnl_cfg ipc_port_cfg)
51 struct iosm_cdev *ipc_port = kzalloc(sizeof(*ipc_port), GFP_KERNEL);
52 enum wwan_port_type port_type = ipc_port_cfg.wwan_port_type;
53 enum ipc_channel_id chl_id = ipc_port_cfg.id;
58 ipc_port->dev = ipc_imem->dev;
59 ipc_port->pcie = ipc_imem->pcie;
61 ipc_port->port_type = port_type;
62 ipc_port->chl_id = chl_id;
63 ipc_port->ipc_imem = ipc_imem;
65 ipc_port->iosm_port = wwan_create_port(ipc_port->dev, port_type,
66 &ipc_wwan_ctrl_ops, NULL,
72 /* Port deinit func */
73 void ipc_port_deinit(struct iosm_cdev *port[])
75 struct iosm_cdev *ipc_port;
78 for (ctrl_chl_nr = 0; ctrl_chl_nr < IPC_MEM_MAX_CHANNELS;
80 if (port[ctrl_chl_nr]) {
81 ipc_port = port[ctrl_chl_nr];
82 wwan_remove_port(ipc_port->iosm_port);