62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0
|
|
*
|
|
* Microchip MCP251xFD Family CAN controller debug tool
|
|
*
|
|
* Copyright (c) 2019, 2020 Pengutronix,
|
|
* Marc Kleine-Budde <kernel@pengutronix.de>
|
|
*/
|
|
|
|
#ifndef _MCP251XFD_DUMP_USERSPACE_H
|
|
#define _MCP251XFD_DUMP_USERSPACE_H
|
|
|
|
#include "mcp251xfd.h"
|
|
#include "mcp251xfd-dump.h"
|
|
|
|
#define MCP251XFD_TX_FIFO 1
|
|
#define MCP251XFD_RX_FIFO(x) (MCP251XFD_TX_FIFO + 1 + (x))
|
|
|
|
struct mcp251xfd_mem {
|
|
char buf[0x1000];
|
|
};
|
|
|
|
struct mcp251xfd_ring {
|
|
unsigned int head;
|
|
unsigned int tail;
|
|
|
|
u16 base;
|
|
u8 nr;
|
|
u8 fifo_nr;
|
|
u8 obj_num;
|
|
u8 obj_size;
|
|
};
|
|
|
|
struct mcp251xfd_priv {
|
|
struct regmap *map;
|
|
|
|
struct mcp251xfd_ring tef[1];
|
|
struct mcp251xfd_ring tx[1];
|
|
struct mcp251xfd_ring rx[1];
|
|
|
|
u8 rx_ring_num;
|
|
};
|
|
|
|
static inline u8 mcp251xfd_get_ring_head(const struct mcp251xfd_ring *ring)
|
|
{
|
|
return ring->head & (ring->obj_num - 1);
|
|
}
|
|
|
|
static inline u8 mcp251xfd_get_ring_tail(const struct mcp251xfd_ring *ring)
|
|
{
|
|
return ring->tail & (ring->obj_num - 1);
|
|
}
|
|
|
|
void mcp251xfd_dump(struct mcp251xfd_priv *priv);
|
|
int mcp251xfd_dev_coredump_read(struct mcp251xfd_priv *priv,
|
|
struct mcp251xfd_mem *mem,
|
|
const char *file_path);
|
|
int mcp251xfd_regmap_read(struct mcp251xfd_priv *priv,
|
|
struct mcp251xfd_mem *mem,
|
|
const char *file_path);
|
|
|
|
#endif
|