soc: aspeed: xdma: Add trace events

Trace the flow of the driver to aid debugging after an error.

OpenBMC-Staging-Count: 1
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Acked-by: Andrew Jeffery <andrew@aj.id.au>
Link: https://lore.kernel.org/r/20220412215331.42491-1-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

1 files changed, 139 insertions, 0 deletions

diff --git a/include/trace/events/xdma.h b/include/trace/events/xdma.h
new file mode 100644
index 000000000000..bf515ad3d8e5
--- /dev/null
+++ b/include/trace/events/xdma.h
@@ -0,0 +1,139 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM xdma
+
+#if !defined(_TRACE_XDMA_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_XDMA_H
+
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(xdma_start,
+	TP_PROTO(const struct aspeed_xdma *ctx, const struct aspeed_xdma_cmd *cmd),
+	TP_ARGS(ctx, cmd),
+	TP_STRUCT__entry(
+		__field(bool,	dir_upstream)
+		__field(unsigned int,	index)
+		__field(__u64,	host)
+		__field(__u64,	pitch)
+		__field(__u64,	cmd)
+	),
+	TP_fast_assign(
+		__entry->dir_upstream = ctx->upstream;
+		__entry->index = ctx->cmd_idx;
+		__entry->host = cmd->host_addr;
+		__entry->pitch = cmd->pitch;
+		__entry->cmd = cmd->cmd;
+	),
+	TP_printk("%s cmd:%u [%08llx %016llx %016llx]",
+		__entry->dir_upstream ? "upstream" : "downstream",
+		__entry->index,
+		__entry->host,
+		__entry->pitch,
+		__entry->cmd
+	)
+);
+
+TRACE_EVENT(xdma_irq,
+	TP_PROTO(u32 sts),
+	TP_ARGS(sts),
+	TP_STRUCT__entry(
+		__field(__u32,	status)
+	),
+	TP_fast_assign(
+		__entry->status = sts;
+	),
+	TP_printk("sts:%08x",
+		__entry->status
+	)
+);
+
+TRACE_EVENT(xdma_reset,
+	TP_PROTO(const struct aspeed_xdma *ctx),
+	TP_ARGS(ctx),
+	TP_STRUCT__entry(
+		__field(bool,	dir_upstream)
+		__field(bool,	in_progress)
+	),
+	TP_fast_assign(
+		__entry->dir_upstream = ctx->upstream;
+		__entry->in_progress =
+			ctx->current_client ? ctx->current_client->in_progress : false;
+	),
+	TP_printk("%sin progress%s",
+		__entry->in_progress ? "" : "not ",
+		__entry->in_progress ? (__entry->dir_upstream ? " upstream" : " downstream") : ""
+	)
+);
+
+TRACE_EVENT(xdma_perst,
+	TP_PROTO(const struct aspeed_xdma *ctx),
+	TP_ARGS(ctx),
+	TP_STRUCT__entry(
+		__field(bool,	in_reset)
+	),
+	TP_fast_assign(
+		__entry->in_reset = ctx->in_reset;
+	),
+	TP_printk("%s",
+		__entry->in_reset ? "in reset" : ""
+	)
+);
+
+TRACE_EVENT(xdma_unmap,
+	TP_PROTO(const struct aspeed_xdma_client *client),
+	TP_ARGS(client),
+	TP_STRUCT__entry(
+		__field(__u32,	phys)
+		__field(__u32,	size)
+	),
+	TP_fast_assign(
+		__entry->phys = client->phys;
+		__entry->size = client->size;
+	),
+	TP_printk("p:%08x s:%08x",
+		__entry->phys,
+		__entry->size
+	)
+);
+
+TRACE_EVENT(xdma_mmap_error,
+	TP_PROTO(const struct aspeed_xdma_client *client, unsigned long vm_start),
+	TP_ARGS(client, vm_start),
+	TP_STRUCT__entry(
+		__field(__u32,	phys)
+		__field(__u32,	size)
+		__field(unsigned long,	vm_start)
+	),
+	TP_fast_assign(
+		__entry->phys = client->phys;
+		__entry->size = client->size;
+		__entry->vm_start = vm_start;
+	),
+	TP_printk("p:%08x s:%08x v:%08lx",
+		__entry->phys,
+		__entry->size,
+		__entry->vm_start
+	)
+);
+
+TRACE_EVENT(xdma_mmap,
+	TP_PROTO(const struct aspeed_xdma_client *client),
+	TP_ARGS(client),
+	TP_STRUCT__entry(
+		__field(__u32,	phys)
+		__field(__u32,	size)
+	),
+	TP_fast_assign(
+		__entry->phys = client->phys;
+		__entry->size = client->size;
+	),
+	TP_printk("p:%08x s:%08x",
+		__entry->phys,
+		__entry->size
+	)
+);
+
+#endif /* _TRACE_XDMA_H */
+
+#include <trace/define_trace.h>