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iommu/ipmmu-vmsa: Add utlb_offset_base

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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>
This commit is contained in:
Yoshihiro Shimoda 2019-11-06 11:35:50 +09:00 committed by Joerg Roedel
parent 3667c9978b
commit 1289f7f150
1 changed files with 4 additions and 1 deletions
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5
drivers/iommu/ipmmu-vmsa.c
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@ -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[] = {