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