diff options
Diffstat (limited to 'drivers/net/can/spi/mcp251xfd/mcp251xfd.h')
| -rw-r--r-- | drivers/net/can/spi/mcp251xfd/mcp251xfd.h | 56 |
1 files changed, 30 insertions, 26 deletions
diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h index b35bfebd23f2..dcbbd2b2fae8 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h @@ -2,7 +2,7 @@ * * mcp251xfd - Microchip MCP251xFD Family CAN controller driver * - * Copyright (c) 2019, 2020, 2021 Pengutronix, + * Copyright (c) 2019, 2020, 2021, 2023 Pengutronix, * Marc Kleine-Budde <kernel@pengutronix.de> * Copyright (c) 2019 Martin Sperl <kernel@martin.sperl.org> */ @@ -524,6 +524,7 @@ struct mcp251xfd_tef_ring { /* u8 obj_num equals tx_ring->obj_num */ /* u8 obj_size equals sizeof(struct mcp251xfd_hw_tef_obj) */ + /* u8 obj_num_shift_to_u8 equals tx_ring->obj_num_shift_to_u8 */ union mcp251xfd_write_reg_buf irq_enable_buf; struct spi_transfer irq_enable_xfer; @@ -542,6 +543,7 @@ struct mcp251xfd_tx_ring { u8 nr; u8 fifo_nr; u8 obj_num; + u8 obj_num_shift_to_u8; u8 obj_size; struct mcp251xfd_tx_obj obj[MCP251XFD_TX_OBJ_NUM_MAX]; @@ -552,10 +554,14 @@ struct mcp251xfd_rx_ring { unsigned int head; unsigned int tail; + /* timestamp of the last valid received CAN frame */ + u64 last_valid; + u16 base; u8 nr; u8 fifo_nr; u8 obj_num; + u8 obj_num_shift_to_u8; u8 obj_size; union mcp251xfd_write_reg_buf irq_enable_buf; @@ -809,10 +815,27 @@ mcp251xfd_spi_cmd_write(const struct mcp251xfd_priv *priv, return data; } -static inline int mcp251xfd_get_timestamp(const struct mcp251xfd_priv *priv, - u32 *timestamp) +static inline int mcp251xfd_get_timestamp_raw(const struct mcp251xfd_priv *priv, + u32 *ts_raw) +{ + return regmap_read(priv->map_reg, MCP251XFD_REG_TBC, ts_raw); +} + +static inline void mcp251xfd_skb_set_timestamp(struct sk_buff *skb, u64 ns) { - return regmap_read(priv->map_reg, MCP251XFD_REG_TBC, timestamp); + struct skb_shared_hwtstamps *hwtstamps = skb_hwtstamps(skb); + + hwtstamps->hwtstamp = ns_to_ktime(ns); +} + +static inline +void mcp251xfd_skb_set_timestamp_raw(const struct mcp251xfd_priv *priv, + struct sk_buff *skb, u32 ts_raw) +{ + u64 ns; + + ns = timecounter_cyc2time(&priv->tc, ts_raw); + mcp251xfd_skb_set_timestamp(skb, ns); } static inline u16 mcp251xfd_get_tef_obj_addr(u8 n) @@ -861,17 +884,8 @@ static inline u8 mcp251xfd_get_tef_tail(const struct mcp251xfd_priv *priv) return priv->tef->tail & (priv->tx->obj_num - 1); } -static inline u8 mcp251xfd_get_tef_len(const struct mcp251xfd_priv *priv) +static inline u8 mcp251xfd_get_tef_linear_len(const struct mcp251xfd_priv *priv, u8 len) { - return priv->tef->head - priv->tef->tail; -} - -static inline u8 mcp251xfd_get_tef_linear_len(const struct mcp251xfd_priv *priv) -{ - u8 len; - - len = mcp251xfd_get_tef_len(priv); - return min_t(u8, len, priv->tx->obj_num - mcp251xfd_get_tef_tail(priv)); } @@ -914,18 +928,9 @@ static inline u8 mcp251xfd_get_rx_tail(const struct mcp251xfd_rx_ring *ring) return ring->tail & (ring->obj_num - 1); } -static inline u8 mcp251xfd_get_rx_len(const struct mcp251xfd_rx_ring *ring) -{ - return ring->head - ring->tail; -} - static inline u8 -mcp251xfd_get_rx_linear_len(const struct mcp251xfd_rx_ring *ring) +mcp251xfd_get_rx_linear_len(const struct mcp251xfd_rx_ring *ring, u8 len) { - u8 len; - - len = mcp251xfd_get_rx_len(ring); - return min_t(u8, len, ring->obj_num - mcp251xfd_get_rx_tail(ring)); } @@ -951,9 +956,8 @@ void mcp251xfd_ring_free(struct mcp251xfd_priv *priv); int mcp251xfd_ring_alloc(struct mcp251xfd_priv *priv); int mcp251xfd_handle_rxif(struct mcp251xfd_priv *priv); int mcp251xfd_handle_tefif(struct mcp251xfd_priv *priv); -void mcp251xfd_skb_set_timestamp(const struct mcp251xfd_priv *priv, - struct sk_buff *skb, u32 timestamp); void mcp251xfd_timestamp_init(struct mcp251xfd_priv *priv); +void mcp251xfd_timestamp_start(struct mcp251xfd_priv *priv); void mcp251xfd_timestamp_stop(struct mcp251xfd_priv *priv); void mcp251xfd_tx_obj_write_sync(struct work_struct *work); |