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/* SPDX-License-Identifier: GPL-2.0
*
* mcp251xfd - Microchip MCP251xFD Family CAN controller driver
*
* Copyright (c) 2021, 2022 Pengutronix,
* Marc Kleine-Budde <kernel@pengutronix.de>
*/
#ifndef _MCP251XFD_RAM_H
#define _MCP251XFD_RAM_H
#include <linux/ethtool.h>
#define CAN_RAM_NUM_MAX (-1)
enum can_ram_mode {
CAN_RAM_MODE_CAN,
CAN_RAM_MODE_CANFD,
__CAN_RAM_MODE_MAX
};
struct can_ram_obj_config {
u8 size[__CAN_RAM_MODE_MAX];
u8 def[__CAN_RAM_MODE_MAX];
u8 min;
u8 max;
u8 fifo_num;
u8 fifo_depth_min;
u8 fifo_depth_coalesce_min;
};
struct can_ram_config {
const struct can_ram_obj_config rx;
const struct can_ram_obj_config tx;
u16 size;
u8 fifo_depth;
};
struct can_ram_layout {
u8 default_rx;
u8 default_tx;
u8 max_rx;
u8 max_tx;
u8 cur_rx;
u8 cur_tx;
u8 rx_coalesce;
u8 tx_coalesce;
};
void can_ram_get_layout(struct can_ram_layout *layout,
const struct can_ram_config *config,
const struct ethtool_ringparam *ring,
const struct ethtool_coalesce *ec,
const bool fd_mode);
#endif
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