firewire: core: add tracepoint event for asynchronous inbound request

This commit adds an event for asynchronous inbound request.

The following example is for asynchronous block write request as IEC
61883-1 FCP request from node 0xffc1.

async_request_inbound: \
  transaction=0xffff89fa08cf16c0 generation=4 scode=2 status=2 \
  timestamp=0x00b3 dst_id=0xffc0 tlabel=19 tcode=1 src_id=0xffc1 \
  offset=0xfffff0000d00 header={0xffc04d10,0xffc1ffff,0xf0000d00,0x80000} \
  data={0x19ff08,0xffff0090}

Link: https://lore.kernel.org/r/20240429043218.609398-5-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>

diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index 56510d305564ccc0e659c20190f6fd3c92d91006..8c13f996a9388e2c2f3fe6e1ee491d18356b7ec1 100644 (file)
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -973,11 +973,13 @@ void fw_core_handle_request(struct fw_card *card, struct fw_packet *p)
 {
        struct fw_request *request;
        unsigned long long offset;
+       unsigned int tcode;
 
        if (p->ack != ACK_PENDING && p->ack != ACK_COMPLETE)
                return;
 
-       if (tcode_is_link_internal(async_header_get_tcode(p->header))) {
+       tcode = async_header_get_tcode(p->header);
+       if (tcode_is_link_internal(tcode)) {
                fw_cdev_handle_phy_packet(card, p);
                return;
        }
@@ -988,6 +990,10 @@ void fw_core_handle_request(struct fw_card *card, struct fw_packet *p)
                return;
        }
 
+       trace_async_request_inbound((uintptr_t)request, p->generation, p->speed, p->ack,
+                                   p->timestamp, p->header, request->data,
+                                   tcode_is_read_request(tcode) ? 0 : request->length / 4);
+
        offset = async_header_get_offset(p->header);
 
        if (!is_in_fcp_region(offset, request->length))

diff --git a/include/trace/events/firewire.h b/include/trace/events/firewire.h
index 2d5f6b196a2200a25d502932960b248423e1a12c..a30cebed119a98b5cae6a7dbdd5f54b96c3c92f8 100644 (file)
--- a/include/trace/events/firewire.h
+++ b/include/trace/events/firewire.h
@@ -153,6 +153,27 @@ DEFINE_EVENT(async_inbound_template, async_response_inbound,
        TP_ARGS(transaction, generation, scode, status, timestamp, header, data, data_count)
 );
 
+DEFINE_EVENT_PRINT(async_inbound_template, async_request_inbound,
+       TP_PROTO(u64 transaction, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp, const u32 *header, const u32 *data, unsigned int data_count),
+       TP_ARGS(transaction, generation, scode, status, timestamp, header, data, data_count),
+       TP_printk(
+               "transaction=0x%llx generation=%u scode=%u status=%u timestamp=0x%04x dst_id=0x%04x tlabel=%u tcode=%u src_id=0x%04x offset=0x%012llx header=%s data=%s",
+               __entry->transaction,
+               __entry->generation,
+               __entry->scode,
+               __entry->status,
+               __entry->timestamp,
+               ASYNC_HEADER_GET_DESTINATION(__entry->header),
+               ASYNC_HEADER_GET_TLABEL(__entry->header),
+               ASYNC_HEADER_GET_TCODE(__entry->header),
+               ASYNC_HEADER_GET_SOURCE(__entry->header),
+               ASYNC_HEADER_GET_OFFSET(__entry->header),
+               __print_array(__entry->header, ASYNC_HEADER_QUADLET_COUNT, QUADLET_SIZE),
+               __print_array(__get_dynamic_array(data),
+                             __get_dynamic_array_len(data) / QUADLET_SIZE, QUADLET_SIZE)
+       )
+);
+
 #undef ASYNC_HEADER_GET_DESTINATION
 #undef ASYNC_HEADER_GET_TLABEL
 #undef ASYNC_HEADER_GET_TCODE