diff options
Diffstat (limited to '')
| -rw-r--r-- | include/trace/events/spi.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/include/trace/events/spi.h b/include/trace/events/spi.h new file mode 100644 index 000000000..0dd9171d2 --- /dev/null +++ b/include/trace/events/spi.h @@ -0,0 +1,182 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM spi + +#if !defined(_TRACE_SPI_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SPI_H + +#include <linux/ktime.h> +#include <linux/tracepoint.h> + +DECLARE_EVENT_CLASS(spi_controller, + + TP_PROTO(struct spi_controller *controller), + + TP_ARGS(controller), + + TP_STRUCT__entry( + __field( int, bus_num ) + ), + + TP_fast_assign( + __entry->bus_num = controller->bus_num; + ), + + TP_printk("spi%d", (int)__entry->bus_num) + +); + +DEFINE_EVENT(spi_controller, spi_controller_idle, + + TP_PROTO(struct spi_controller *controller), + + TP_ARGS(controller) + +); + +DEFINE_EVENT(spi_controller, spi_controller_busy, + + TP_PROTO(struct spi_controller *controller), + + TP_ARGS(controller) + +); + +DECLARE_EVENT_CLASS(spi_message, + + TP_PROTO(struct spi_message *msg), + + TP_ARGS(msg), + + TP_STRUCT__entry( + __field( int, bus_num ) + __field( int, chip_select ) + __field( struct spi_message *, msg ) + ), + + TP_fast_assign( + __entry->bus_num = msg->spi->controller->bus_num; + __entry->chip_select = msg->spi->chip_select; + __entry->msg = msg; + ), + + TP_printk("spi%d.%d %p", (int)__entry->bus_num, + (int)__entry->chip_select, + (struct spi_message *)__entry->msg) +); + +DEFINE_EVENT(spi_message, spi_message_submit, + + TP_PROTO(struct spi_message *msg), + + TP_ARGS(msg) + +); + +DEFINE_EVENT(spi_message, spi_message_start, + + TP_PROTO(struct spi_message *msg), + + TP_ARGS(msg) + +); + +TRACE_EVENT(spi_message_done, + + TP_PROTO(struct spi_message *msg), + + TP_ARGS(msg), + + TP_STRUCT__entry( + __field( int, bus_num ) + __field( int, chip_select ) + __field( struct spi_message *, msg ) + __field( unsigned, frame ) + __field( unsigned, actual ) + ), + + TP_fast_assign( + __entry->bus_num = msg->spi->controller->bus_num; + __entry->chip_select = msg->spi->chip_select; + __entry->msg = msg; + __entry->frame = msg->frame_length; + __entry->actual = msg->actual_length; + ), + + TP_printk("spi%d.%d %p len=%u/%u", (int)__entry->bus_num, + (int)__entry->chip_select, + (struct spi_message *)__entry->msg, + (unsigned)__entry->actual, (unsigned)__entry->frame) +); + +/* + * consider a buffer valid if non-NULL and if it doesn't match the dummy buffer + * that only exist to work with controllers that have SPI_CONTROLLER_MUST_TX or + * SPI_CONTROLLER_MUST_RX. + */ +#define spi_valid_txbuf(msg, xfer) \ + (xfer->tx_buf && xfer->tx_buf != msg->spi->controller->dummy_tx) +#define spi_valid_rxbuf(msg, xfer) \ + (xfer->rx_buf && xfer->rx_buf != msg->spi->controller->dummy_rx) + +DECLARE_EVENT_CLASS(spi_transfer, + + TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer), + + TP_ARGS(msg, xfer), + + TP_STRUCT__entry( + __field( int, bus_num ) + __field( int, chip_select ) + __field( struct spi_transfer *, xfer ) + __field( int, len ) + __dynamic_array(u8, rx_buf, + spi_valid_rxbuf(msg, xfer) ? + (xfer->len < 64 ? xfer->len : 64) : 0) + __dynamic_array(u8, tx_buf, + spi_valid_txbuf(msg, xfer) ? + (xfer->len < 64 ? xfer->len : 64) : 0) + ), + + TP_fast_assign( + __entry->bus_num = msg->spi->controller->bus_num; + __entry->chip_select = msg->spi->chip_select; + __entry->xfer = xfer; + __entry->len = xfer->len; + + if (spi_valid_txbuf(msg, xfer)) + memcpy(__get_dynamic_array(tx_buf), + xfer->tx_buf, __get_dynamic_array_len(tx_buf)); + + if (spi_valid_rxbuf(msg, xfer)) + memcpy(__get_dynamic_array(rx_buf), + xfer->rx_buf, __get_dynamic_array_len(rx_buf)); + ), + + TP_printk("spi%d.%d %p len=%d tx=[%*phD] rx=[%*phD]", + __entry->bus_num, __entry->chip_select, + __entry->xfer, __entry->len, + __get_dynamic_array_len(tx_buf), __get_dynamic_array(tx_buf), + __get_dynamic_array_len(rx_buf), __get_dynamic_array(rx_buf)) +); + +DEFINE_EVENT(spi_transfer, spi_transfer_start, + + TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer), + + TP_ARGS(msg, xfer) + +); + +DEFINE_EVENT(spi_transfer, spi_transfer_stop, + + TP_PROTO(struct spi_message *msg, struct spi_transfer *xfer), + + TP_ARGS(msg, xfer) + +); + +#endif /* _TRACE_POWER_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |