diff options
Diffstat (limited to 'drivers/net/wwan/iosm/iosm_ipc_imem_ops.h')
| -rw-r--r-- | drivers/net/wwan/iosm/iosm_ipc_imem_ops.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/drivers/net/wwan/iosm/iosm_ipc_imem_ops.h b/drivers/net/wwan/iosm/iosm_ipc_imem_ops.h new file mode 100644 index 0000000000..026c5bd0f9 --- /dev/null +++ b/drivers/net/wwan/iosm/iosm_ipc_imem_ops.h @@ -0,0 +1,147 @@ +/* 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 Indentifier. + * @hp_id: HP Indentifier. + * + * 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 |