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