Commit 083ae66e authored by Jacob Pan's avatar Jacob Pan Committed by Zheng Zengkai
Browse files

trace/iommu: Add sva trace events 

maillist inclusion
category: feature
bugzilla: 51855
CVE: NA

Reference: https://jpbrucker.net/git/linux/commit/?h=sva/2021-03-01&id=303996d99beb31a70149ab4a328bfc41af037e92



---------------------------------------------

For development only, trace I/O page faults and responses.

Signed-off-by: default avatarJacob Pan <jacob.jun.pan@linux.intel.com>
[JPB: removed the invalidate trace event, that will be added later]
Signed-off-by: default avatarJean-Philippe Brucker <jean-philippe@linaro.org>

Signed-off-by: default avatarLijun Fang <fanglijun3@huawei.com>
Reviewed-by: default avatarWeilong Chen <chenweilong@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent da76349c

include/trace/events/iommu.h

+84 −0
Original line number Diff line number Diff line
@@ -12,6 +12,8 @@ 
#define _TRACE_IOMMU_H



#include <linux/tracepoint.h>

#include <linux/iommu.h>

#include <uapi/linux/iommu.h>



struct device;
@@ -161,6 +163,88 @@ DEFINE_EVENT(iommu_error, io_page_fault, 


	TP_ARGS(dev, iova, flags)

);



TRACE_EVENT(dev_fault,



	TP_PROTO(struct device *dev,  struct iommu_fault *evt),



	TP_ARGS(dev, evt),



	TP_STRUCT__entry(

		__string(device, dev_name(dev))

		__field(int, type)

		__field(int, reason)

		__field(u64, addr)

		__field(u64, fetch_addr)

		__field(u32, pasid)

		__field(u32, grpid)

		__field(u32, flags)

		__field(u32, prot)

	),



	TP_fast_assign(

		__assign_str(device, dev_name(dev));

		__entry->type = evt->type;

		if (evt->type == IOMMU_FAULT_DMA_UNRECOV) {

			__entry->reason		= evt->event.reason;

			__entry->flags		= evt->event.flags;

			__entry->pasid		= evt->event.pasid;

			__entry->grpid		= 0;

			__entry->prot		= evt->event.perm;

			__entry->addr		= evt->event.addr;

			__entry->fetch_addr	= evt->event.fetch_addr;

		} else {

			__entry->reason		= 0;

			__entry->flags		= evt->prm.flags;

			__entry->pasid		= evt->prm.pasid;

			__entry->grpid		= evt->prm.grpid;

			__entry->prot		= evt->prm.perm;

			__entry->addr		= evt->prm.addr;

			__entry->fetch_addr	= 0;

		}

	),



	TP_printk("IOMMU:%s type=%d reason=%d addr=0x%016llx fetch=0x%016llx pasid=%d group=%d flags=%x prot=%d",

		__get_str(device),

		__entry->type,

		__entry->reason,

		__entry->addr,

		__entry->fetch_addr,

		__entry->pasid,

		__entry->grpid,

		__entry->flags,

		__entry->prot

	)

);



TRACE_EVENT(dev_page_response,



	TP_PROTO(struct device *dev,  struct iommu_page_response *msg),



	TP_ARGS(dev, msg),



	TP_STRUCT__entry(

		__string(device, dev_name(dev))

		__field(int, code)

		__field(u32, pasid)

		__field(u32, grpid)

	),



	TP_fast_assign(

		__assign_str(device, dev_name(dev));

		__entry->code = msg->code;

		__entry->pasid = msg->pasid;

		__entry->grpid = msg->grpid;

	),



	TP_printk("IOMMU:%s code=%d pasid=%d group=%d",

		__get_str(device),

		__entry->code,

		__entry->pasid,

		__entry->grpid

	)

);



#endif /* _TRACE_IOMMU_H */



/* This part must be outside protection */