}
}
-void mcp251xfd_ring_init(struct mcp251xfd_priv *priv)
+int mcp251xfd_ring_init(struct mcp251xfd_priv *priv)
{
- u16 base = 0;
+ u16 base = 0, ram_used;
u8 fifo_nr = 1;
netdev_reset_queue(priv->ndev);
mcp251xfd_ring_init_tef(priv, &base);
mcp251xfd_ring_init_rx(priv, &base, &fifo_nr);
mcp251xfd_ring_init_tx(priv, &base, &fifo_nr);
+
+ ram_used = base - MCP251XFD_RAM_START;
+ if (ram_used > MCP251XFD_RAM_SIZE) {
+ netdev_err(priv->ndev,
+ "Error during ring configuration, using more RAM (%u bytes) than available (%u bytes).\n",
+ ram_used, MCP251XFD_RAM_SIZE);
+ return -ENOMEM;
+ }
+
+ return 0;
}
void mcp251xfd_ring_free(struct mcp251xfd_priv *priv)
const void *data, size_t data_size);
u16 mcp251xfd_crc16_compute(const void *data, size_t data_size);
int mcp251xfd_regmap_init(struct mcp251xfd_priv *priv);
-void mcp251xfd_ring_init(struct mcp251xfd_priv *priv);
+int mcp251xfd_ring_init(struct mcp251xfd_priv *priv);
void mcp251xfd_ring_free(struct mcp251xfd_priv *priv);
int mcp251xfd_ring_alloc(struct mcp251xfd_priv *priv);
int mcp251xfd_handle_rxif(struct mcp251xfd_priv *priv);