diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2017-03-22 15:21:55 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2017-04-20 11:39:21 +1000 |
| commit | b1af23d836f811137d504d14d4cbdd01929dec34 (patch) | |
| tree | 384ee7a31114a4311b711f5cc582285d06ca7271 /arch/powerpc/include/asm/iommu.h | |
| parent | da6f59e19233efdda58f196afbae8e05f6030d7f (diff) | |
| download | linux-b1af23d836f811137d504d14d4cbdd01929dec34.tar.bz2 | |
KVM: PPC: iommu: Unify TCE checking
This reworks helpers for checking TCE update parameters in way they
can be used in KVM.
This should cause no behavioral change.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/include/asm/iommu.h')
| -rw-r--r-- | arch/powerpc/include/asm/iommu.h | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h index d96142572e6d..8a8ce220d7d0 100644 --- a/arch/powerpc/include/asm/iommu.h +++ b/arch/powerpc/include/asm/iommu.h @@ -296,11 +296,21 @@ static inline void iommu_restore(void) #endif /* The API to support IOMMU operations for VFIO */ -extern int iommu_tce_clear_param_check(struct iommu_table *tbl, - unsigned long ioba, unsigned long tce_value, - unsigned long npages); -extern int iommu_tce_put_param_check(struct iommu_table *tbl, - unsigned long ioba, unsigned long tce); +extern int iommu_tce_check_ioba(unsigned long page_shift, + unsigned long offset, unsigned long size, + unsigned long ioba, unsigned long npages); +extern int iommu_tce_check_gpa(unsigned long page_shift, + unsigned long gpa); + +#define iommu_tce_clear_param_check(tbl, ioba, tce_value, npages) \ + (iommu_tce_check_ioba((tbl)->it_page_shift, \ + (tbl)->it_offset, (tbl)->it_size, \ + (ioba), (npages)) || (tce_value)) +#define iommu_tce_put_param_check(tbl, ioba, gpa) \ + (iommu_tce_check_ioba((tbl)->it_page_shift, \ + (tbl)->it_offset, (tbl)->it_size, \ + (ioba), 1) || \ + iommu_tce_check_gpa((tbl)->it_page_shift, (gpa))) extern void iommu_flush_tce(struct iommu_table *tbl); extern int iommu_take_ownership(struct iommu_table *tbl); |