Presently, "/sys/kernel/debug/iommu/intel/dmar_translation_struct" file
dumps DMAR tables in the below format
IOMMU dmar2: Root Table Address:4362cc000
Root Table Entries:
Bus: 0 H: 0 L: 4362f0001
Context Table Entries for Bus: 0
Entry B:D.F High Low
160 00:14.0 102 4362ef001
184 00:17.0 302 435ec4001
248 00:1f.0 202 436300001
This format has few short comings like
1. When extended for dumping scalable mode DMAR table it will quickly be
very clumsy, making it unreadable.
2. It has information like the Bus number and Entry which are basically
part of B:D.F, hence are a repetition and are not so useful.
So, change it to a new format which could be easily extended to dump
scalable mode DMAR table. The new format looks as below:
IOMMU dmar2: Root Table Address: 0x436f7d000
B.D.F Root_entry Context_entry
00:14.0 0x0000000000000000:0x0000000436fbd001 0x0000000000000102:0x0000000436fbc001
00:17.0 0x0000000000000000:0x0000000436fbd001 0x0000000000000302:0x0000000436af4001
00:1f.0 0x0000000000000000:0x0000000436fbd001 0x0000000000000202:0x0000000436fcd001
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Sohil Mehta <sohil.mehta@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
ea09506c36