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mcp251xfd-dump: add support for dumps created with Linux kernel >= v5.18

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This commit is contained in:
Marc Kleine-Budde
2023-01-03 20:31:54 +01:00
parent b4042d0205
commit f3b35e8e80
4 changed files with 355 additions and 332 deletions
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mcp251xfd/mcp251xfd-dump-userspace.h
+11 -17
View File
@@ -12,14 +12,17 @@
#include "mcp251xfd.h"
#include "mcp251xfd-dump.h"
#define MCP251XFD_TX_FIFO 1
#define MCP251XFD_RX_FIFO(x) (MCP251XFD_TX_FIFO + 1 + (x))
#define MCP251XFD_DUMP_UNKNOWN (-1U)
struct mcp251xfd_mem {
char buf[0x1000];
};
struct mcp251xfd_ring {
enum mcp251xfd_dump_object_type type;
const struct mcp251xfd_dump_regs_fifo *fifo;
void *ram;
unsigned int head;
unsigned int tail;
@@ -30,25 +33,14 @@ struct mcp251xfd_ring {
u8 obj_size;
};
#define MCP251XFD_RING_TEF 0
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;
struct mcp251xfd_ring ring[32];
};
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_ring_init(struct mcp251xfd_ring *ring);
void mcp251xfd_dump(struct mcp251xfd_priv *priv);
int mcp251xfd_dev_coredump_read(struct mcp251xfd_priv *priv,
@@ -57,5 +49,7 @@ int mcp251xfd_dev_coredump_read(struct mcp251xfd_priv *priv,
int mcp251xfd_regmap_read(struct mcp251xfd_priv *priv,
struct mcp251xfd_mem *mem,
const char *file_path);
const char *
get_object_type_str(enum mcp251xfd_dump_object_type object_type);
#endif