Quelle  firewire_ohci.h

// SPDX-License-Identifier: GPL-2.0-or-later
// Copyright (c) 2024 Takashi Sakamoto

#undef TRACE_SYSTEM
#define TRACE_SYSTEM firewire_ohci

#if !defined(_FIREWIRE_OHCI_TRACE_EVENT_H) || defined(TRACE_HEADER_MULTI_READ)
#define _FIREWIRE_OHCI_TRACE_EVENT_H

#include <linux/tracepoint.h>

// Some macros and helper functions are defined in 'drivers/firewire/ohci.c'.

TRACE_EVENT(irqs,
 TP_PROTO(unsigned int card_index, u32 events),
 TP_ARGS(card_index, events),
 TP_STRUCT__entry(
  __field(u8, card_index)
  __field(u32, events)
 ),
 TP_fast_assign(
  __entry->card_index = card_index;
  __entry->events = events;
 ),
 TP_printk(
  "card_index=%u events=%s",
  __entry->card_index,
  __print_flags(__entry->events, "|",
   { OHCI1394_selfIDComplete, "selfIDComplete" },
   { OHCI1394_RQPkt,  "RQPkt" },
   { OHCI1394_RSPkt,  "RSPkt" },
   { OHCI1394_reqTxComplete, "reqTxComplete" },
   { OHCI1394_respTxComplete, "respTxComplete" },
   { OHCI1394_isochRx,  "isochRx" },
   { OHCI1394_isochTx,  "isochTx" },
   { OHCI1394_postedWriteErr, "postedWriteErr" },
   { OHCI1394_cycleTooLong, "cycleTooLong" },
   { OHCI1394_cycle64Seconds, "cycle64Seconds" },
   { OHCI1394_cycleInconsistent, "cycleInconsistent" },
   { OHCI1394_regAccessFail, "regAccessFail" },
   { OHCI1394_unrecoverableError, "unrecoverableError" },
   { OHCI1394_busReset,  "busReset" }
  )
 )
);

#define QUADLET_SIZE 4

#define SELF_ID_COUNT_IS_ERROR(reg) \
 (!!(((reg) & OHCI1394_SelfIDCount_selfIDError_MASK) >> OHCI1394_SelfIDCount_selfIDError_SHIFT))

#define SELF_ID_COUNT_GET_GENERATION(reg) \
 (((reg) & OHCI1394_SelfIDCount_selfIDGeneration_MASK) >> OHCI1394_SelfIDCount_selfIDGeneration_SHIFT)

#define SELF_ID_RECEIVE_Q0_GET_GENERATION(quadlet) \
 (((quadlet) & OHCI1394_SELF_ID_RECEIVE_Q0_GENERATION_MASK) >> OHCI1394_SELF_ID_RECEIVE_Q0_GENERATION_SHIFT)

#define SELF_ID_RECEIVE_Q0_GET_TIMESTAMP(quadlet) \
 (((quadlet) & OHCI1394_SELF_ID_RECEIVE_Q0_TIMESTAMP_MASK) >> OHCI1394_SELF_ID_RECEIVE_Q0_TIMESTAMP_SHIFT)

TRACE_EVENT(self_id_complete,
 TP_PROTO(unsigned int card_index, u32 reg, const __le32 *self_id_receive, bool has_be_header_quirk),
 TP_ARGS(card_index, reg, self_id_receive, has_be_header_quirk),
 TP_STRUCT__entry(
  __field(u8, card_index)
  __field(u32, reg)
  __dynamic_array(u32, self_id_receive, ohci1394_self_id_count_get_size(reg))
 ),
 TP_fast_assign(
  __entry->card_index = card_index;
  __entry->reg = reg;
  {
   u32 *ptr = __get_dynamic_array(self_id_receive);
   int i;

   for (i = 0; i < __get_dynamic_array_len(self_id_receive) / QUADLET_SIZE; ++i)
    ptr[i] = cond_le32_to_cpu(self_id_receive[i], has_be_header_quirk);
  }
 ),
 TP_printk(
  "card_index=%u is_error=%s generation_at_bus_reset=%u generation_at_completion=%u timestamp=0x%04x packet_data=%s",
  __entry->card_index,
  SELF_ID_COUNT_IS_ERROR(__entry->reg) ? "true" : "false",
  SELF_ID_COUNT_GET_GENERATION(__entry->reg),
  SELF_ID_RECEIVE_Q0_GET_GENERATION(((const u32 *)__get_dynamic_array(self_id_receive))[0]),
  SELF_ID_RECEIVE_Q0_GET_TIMESTAMP(((const u32 *)__get_dynamic_array(self_id_receive))[0]),
  __print_array(((const u32 *)__get_dynamic_array(self_id_receive)) + 1,
         (__get_dynamic_array_len(self_id_receive) / QUADLET_SIZE) - 1, QUADLET_SIZE)
 )
);

#undef SELF_ID_COUNT_IS_ERROR
#undef SELF_ID_COUNT_GET_GENERATION
#undef SELF_ID_RECEIVE_Q0_GET_GENERATION
#undef SELF_ID_RECEIVE_Q0_GET_TIMESTAMP

#undef QUADLET_SIZE

#endif // _FIREWIRE_OHCI_TRACE_EVENT_H

#include <trace/define_trace.h>