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authorSai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>2019-05-24 16:40:16 -0700
committerJoerg Roedel <jroedel@suse.de>2019-05-27 16:16:09 +0200
commitcdd3a2499d30695730b22dc025c00b9b28884c6b (patch)
treee6b9a78cf6c89d436bf89fe43f630fde179fafb1 /drivers/iommu/intel-pasid.c
parentea09506c363e90ef0b7532fdcf187bb67281a5e6 (diff)
downloadlinux-cdd3a2499d30695730b22dc025c00b9b28884c6b.tar.bz2
iommu/vt-d: Introduce macros useful for dumping DMAR table
A scalable mode DMAR table walk would involve looking at bits in each stage of walk, like, 1. Is PASID enabled in the context entry? 2. What's the size of PASID directory? 3. Is the PASID directory entry present? 4. Is the PASID table entry present? 5. Number of PASID table entries? Hence, add these macros that will later be used during this walk. Apart from adding new macros, move existing macros (like pasid_pde_is_present(), get_pasid_table_from_pde() and pasid_supported()) to appropriate header files so that they could be reused. 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>
Diffstat (limited to 'drivers/iommu/intel-pasid.c')
-rw-r--r--drivers/iommu/intel-pasid.c17
1 files changed, 0 insertions, 17 deletions
diff --git a/drivers/iommu/intel-pasid.c b/drivers/iommu/intel-pasid.c
index 2fefeafda437..6895a23b2157 100644
--- a/drivers/iommu/intel-pasid.c
+++ b/drivers/iommu/intel-pasid.c
@@ -169,23 +169,6 @@ attach_out:
return 0;
}
-/* Get PRESENT bit of a PASID directory entry. */
-static inline bool
-pasid_pde_is_present(struct pasid_dir_entry *pde)
-{
- return READ_ONCE(pde->val) & PASID_PTE_PRESENT;
-}
-
-/* Get PASID table from a PASID directory entry. */
-static inline struct pasid_entry *
-get_pasid_table_from_pde(struct pasid_dir_entry *pde)
-{
- if (!pasid_pde_is_present(pde))
- return NULL;
-
- return phys_to_virt(READ_ONCE(pde->val) & PDE_PFN_MASK);
-}
-
void intel_pasid_free_table(struct device *dev)
{
struct device_domain_info *info;