/* SPDX-License-Identifier: GPL-2.0-only
*
* Copyright (C) 2020-21 Intel Corporation.
*/
#ifndef IOSM_IPC_IMEM_OPS_H
#define IOSM_IPC_IMEM_OPS_H
#include "iosm_ipc_mux_codec.h"
/* Maximum wait time for blocking read */
#define IPC_READ_TIMEOUT 3000
/* The delay in ms for defering the unregister */
#define SIO_UNREGISTER_DEFER_DELAY_MS 1
/* Default delay till CP PSI image is running and modem updates the
* execution stage.
* unit : milliseconds
*/
#define PSI_START_DEFAULT_TIMEOUT 3000
/* Default time out when closing SIO, till the modem is in
* running state.
* unit : milliseconds
*/
#define BOOT_CHECK_DEFAULT_TIMEOUT 400
/* IP MUX channel range */
#define IP_MUX_SESSION_START 0
#define IP_MUX_SESSION_END 7
/* Default IP MUX channel */
#define IP_MUX_SESSION_DEFAULT 0
/**
* ipc_imem_sys_port_open - Open a port link to CP.
* @ipc_imem: Imem instance.
* @chl_id: Channel Identifier.
* @hp_id: HP Identifier.
*
* Return: channel instance on success, NULL for failure
*/
struct ipc_mem_channel *ipc_imem_sys_port_open(struct iosm_imem *ipc_imem,
int chl_id, int hp_id);
void ipc_imem_sys_port_close(struct iosm_imem *ipc_imem,
struct ipc_mem_channel *channel);
/**
* ipc_imem_sys_cdev_write - Route the uplink buffer to CP.
* @ipc_cdev: iosm_cdev instance.
* @skb: Pointer to skb.
*
* Return: 0 on success and failure value on error
*/
int ipc_imem_sys_cdev_write(struct iosm_cdev *ipc_cdev, struct sk_buff *skb);
/**
* ipc_imem_sys_wwan_open - Open packet data online channel between network
* layer and CP.
* @ipc_imem: Imem instance.
* @if_id: ip link tag of the net device.
*
* Return: Channel ID on success and failure value on error
*/
int ipc_imem_sys_wwan_open(struct iosm_imem *ipc_imem, int if_id);
/**
* ipc_imem_sys_wwan_close - Close packet data online channel between network
* layer and CP.
* @ipc_imem: Imem instance.
* @if_id: IP link id net device.
* @channel_id: Channel ID to be closed.
*/
void ipc_imem_sys_wwan_close(struct iosm_imem *ipc_imem, int if_id,
int channel_id);
/**
* ipc_imem_sys_wwan_transmit - Function for transfer UL data
* @ipc_imem: Imem instance.
* @if_id: link ID of the device.
* @channel_id: Channel ID used
* @skb: Pointer to sk buffer
*
* Return: 0 on success and failure value on error
*/
int ipc_imem_sys_wwan_transmit(struct iosm_imem *ipc_imem, int if_id,
int channel_id, struct sk_buff *skb);
/**
* ipc_imem_wwan_channel_init - Initializes WWAN channels and the channel for
* MUX.
* @ipc_imem: Pointer to iosm_imem struct.
* @mux_type: Type of mux protocol.
*
* Return: 0 on success and failure value on error
*/
int ipc_imem_wwan_channel_init(struct iosm_imem *ipc_imem,
enum ipc_mux_protocol mux_type);
/**
* ipc_imem_sys_devlink_open - Open a Flash/CD Channel link to CP
* @ipc_imem: iosm_imem instance
*
* Return: channel instance on success, NULL for failure
*/
struct ipc_mem_channel *ipc_imem_sys_devlink_open(struct iosm_imem *ipc_imem);
/**
* ipc_imem_sys_devlink_close - Release a Flash/CD channel link to CP
* @ipc_devlink: Pointer to ipc_devlink data-struct
*
*/
void ipc_imem_sys_devlink_close(struct iosm_devlink *ipc_devlink);
/**
* ipc_imem_sys_devlink_notify_rx - Receive downlink characters from CP,
* the downlink skbuf is added at the end of the
* downlink or rx list
* @ipc_devlink: Pointer to ipc_devlink data-struct
* @skb: Pointer to sk buffer
*/
void ipc_imem_sys_devlink_notify_rx(struct iosm_devlink *ipc_devlink,
struct sk_buff *skb);
/**
* ipc_imem_sys_devlink_read - Copy the rx data and free the skbuf
* @ipc_devlink: Devlink instance
* @data: Buffer to read the data from modem
* @bytes_to_read: Size of destination buffer
* @bytes_read: Number of bytes read
*
* Return: 0 on success and failure value on error
*/
int ipc_imem_sys_devlink_read(struct iosm_devlink *ipc_devlink, u8 *data,
u32 bytes_to_read, u32 *bytes_read);
/**
* ipc_imem_sys_devlink_write - Route the uplink buffer to CP
* @ipc_devlink: Devlink_sio instance
* @buf: Pointer to buffer
* @count: Number of data bytes to write
* Return: 0 on success and failure value on error
*/
int ipc_imem_sys_devlink_write(struct iosm_devlink *ipc_devlink,
unsigned char *buf, int count);
#endif
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