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| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2019-11-06 03:35:50 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2019-11-11 15:06:32 +0100 |
| commit | 1289f7f15001c7ed36be6d23cb145c1d5feacdc8 (patch) | |
| tree | 2b5b83ac666edbca737e362f1cd6bc6ef84f3ce2 /drivers/iommu/ipmmu-vmsa.c | |
| parent | iommu/ipmmu-vmsa: Add helper functions for "uTLB" registers (diff) | |
| download | linux-1289f7f15001c7ed36be6d23cb145c1d5feacdc8.tar.xz linux-1289f7f15001c7ed36be6d23cb145c1d5feacdc8.zip | |
iommu/ipmmu-vmsa: Add utlb_offset_base
Since we will have changed memory mapping of the IPMMU in the future,
this patch adds a utlb_offset_base into struct ipmmu_features
for IMUCTR and IMUASID registers. No behavior change.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/ipmmu-vmsa.c')
| -rw-r--r-- | drivers/iommu/ipmmu-vmsa.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index ed591a2b175b..7ef9c199ab06 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -52,6 +52,7 @@ struct ipmmu_features { bool cache_snoop; unsigned int ctx_offset_base; unsigned int ctx_offset_stride; + unsigned int utlb_offset_base; }; struct ipmmu_vmsa_device { @@ -232,7 +233,7 @@ static void ipmmu_ctx_write_all(struct ipmmu_vmsa_domain *domain, static u32 ipmmu_utlb_reg(struct ipmmu_vmsa_device *mmu, unsigned int reg) { - return reg; + return mmu->features->utlb_offset_base + reg; } static void ipmmu_imuasid_write(struct ipmmu_vmsa_device *mmu, @@ -958,6 +959,7 @@ static const struct ipmmu_features ipmmu_features_default = { .cache_snoop = true, .ctx_offset_base = 0, .ctx_offset_stride = 0x40, + .utlb_offset_base = 0, }; static const struct ipmmu_features ipmmu_features_rcar_gen3 = { @@ -971,6 +973,7 @@ static const struct ipmmu_features ipmmu_features_rcar_gen3 = { .cache_snoop = false, .ctx_offset_base = 0, .ctx_offset_stride = 0x40, + .utlb_offset_base = 0, }; static const struct of_device_id ipmmu_of_ids[] = { |