From 3b53034c268d550d9e8522e613a14ab53b8840d8 Mon Sep 17 00:00:00 2001
From: Lu Baolu <baolu.lu@linux.intel.com>
Date: Fri, 6 Sep 2019 14:14:51 +0800
Subject: iommu/vt-d: Add trace events for device dma map/unmap

This adds trace support for the Intel IOMMU driver. It
also declares some events which could be used to trace
the events when an IOVA is being mapped or unmapped in
a domain.

Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 include/trace/events/intel_iommu.h | 106 +++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 include/trace/events/intel_iommu.h

(limited to 'include/trace')

diff --git a/include/trace/events/intel_iommu.h b/include/trace/events/intel_iommu.h
new file mode 100644
index 000000000000..54e61d456cdf
--- /dev/null
+++ b/include/trace/events/intel_iommu.h
@@ -0,0 +1,106 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Intel IOMMU trace support
+ *
+ * Copyright (C) 2019 Intel Corporation
+ *
+ * Author: Lu Baolu <baolu.lu@linux.intel.com>
+ */
+#ifdef CONFIG_INTEL_IOMMU
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM intel_iommu
+
+#if !defined(_TRACE_INTEL_IOMMU_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_INTEL_IOMMU_H
+
+#include <linux/tracepoint.h>
+#include <linux/intel-iommu.h>
+
+DECLARE_EVENT_CLASS(dma_map,
+	TP_PROTO(struct device *dev, dma_addr_t dev_addr, phys_addr_t phys_addr,
+		 size_t size),
+
+	TP_ARGS(dev, dev_addr, phys_addr, size),
+
+	TP_STRUCT__entry(
+		__string(dev_name, dev_name(dev))
+		__field(dma_addr_t, dev_addr)
+		__field(phys_addr_t, phys_addr)
+		__field(size_t,	size)
+	),
+
+	TP_fast_assign(
+		__assign_str(dev_name, dev_name(dev));
+		__entry->dev_addr = dev_addr;
+		__entry->phys_addr = phys_addr;
+		__entry->size = size;
+	),
+
+	TP_printk("dev=%s dev_addr=0x%llx phys_addr=0x%llx size=%zu",
+		  __get_str(dev_name),
+		  (unsigned long long)__entry->dev_addr,
+		  (unsigned long long)__entry->phys_addr,
+		  __entry->size)
+);
+
+DEFINE_EVENT(dma_map, map_single,
+	TP_PROTO(struct device *dev, dma_addr_t dev_addr, phys_addr_t phys_addr,
+		 size_t size),
+	TP_ARGS(dev, dev_addr, phys_addr, size)
+);
+
+DEFINE_EVENT(dma_map, map_sg,
+	TP_PROTO(struct device *dev, dma_addr_t dev_addr, phys_addr_t phys_addr,
+		 size_t size),
+	TP_ARGS(dev, dev_addr, phys_addr, size)
+);
+
+DEFINE_EVENT(dma_map, bounce_map_single,
+	TP_PROTO(struct device *dev, dma_addr_t dev_addr, phys_addr_t phys_addr,
+		 size_t size),
+	TP_ARGS(dev, dev_addr, phys_addr, size)
+);
+
+DECLARE_EVENT_CLASS(dma_unmap,
+	TP_PROTO(struct device *dev, dma_addr_t dev_addr, size_t size),
+
+	TP_ARGS(dev, dev_addr, size),
+
+	TP_STRUCT__entry(
+		__string(dev_name, dev_name(dev))
+		__field(dma_addr_t, dev_addr)
+		__field(size_t,	size)
+	),
+
+	TP_fast_assign(
+		__assign_str(dev_name, dev_name(dev));
+		__entry->dev_addr = dev_addr;
+		__entry->size = size;
+	),
+
+	TP_printk("dev=%s dev_addr=0x%llx size=%zu",
+		  __get_str(dev_name),
+		  (unsigned long long)__entry->dev_addr,
+		  __entry->size)
+);
+
+DEFINE_EVENT(dma_unmap, unmap_single,
+	TP_PROTO(struct device *dev, dma_addr_t dev_addr, size_t size),
+	TP_ARGS(dev, dev_addr, size)
+);
+
+DEFINE_EVENT(dma_unmap, unmap_sg,
+	TP_PROTO(struct device *dev, dma_addr_t dev_addr, size_t size),
+	TP_ARGS(dev, dev_addr, size)
+);
+
+DEFINE_EVENT(dma_unmap, bounce_unmap_single,
+	TP_PROTO(struct device *dev, dma_addr_t dev_addr, size_t size),
+	TP_ARGS(dev, dev_addr, size)
+);
+
+#endif /* _TRACE_INTEL_IOMMU_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
+#endif /* CONFIG_INTEL_IOMMU */
-- 
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