diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2019-11-06 11:35:49 +0900 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2019-11-11 15:06:27 +0100 |
| commit | 3667c9978b2911dc1ded77f5971df477885409c4 (patch) | |
| tree | d6b7d0cdfc28075a08f03a3b56686fa8e04c0ab3 /drivers/iommu | |
| parent | 3dc28d9f59eaae41461542b27afe70339347ebb3 (diff) | |
iommu/ipmmu-vmsa: Add helper functions for "uTLB" registers
Since we will have changed memory mapping of the IPMMU in the future,
This patch adds helper functions ipmmu_utlb_reg() and
ipmmu_imu{asid,ctr}_write() for "uTLB" registers. No behavior change.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/ipmmu-vmsa.c | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index c5a435a78333..ed591a2b175b 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -230,6 +230,23 @@ static void ipmmu_ctx_write_all(struct ipmmu_vmsa_domain *domain, ipmmu_ctx_write(domain->mmu->root, domain->context_id, reg, data); } +static u32 ipmmu_utlb_reg(struct ipmmu_vmsa_device *mmu, unsigned int reg) +{ + return reg; +} + +static void ipmmu_imuasid_write(struct ipmmu_vmsa_device *mmu, + unsigned int utlb, u32 data) +{ + ipmmu_write(mmu, ipmmu_utlb_reg(mmu, IMUASID(utlb)), data); +} + +static void ipmmu_imuctr_write(struct ipmmu_vmsa_device *mmu, + unsigned int utlb, u32 data) +{ + ipmmu_write(mmu, ipmmu_utlb_reg(mmu, IMUCTR(utlb)), data); +} + /* ----------------------------------------------------------------------------- * TLB and microTLB Management */ @@ -275,11 +292,10 @@ static void ipmmu_utlb_enable(struct ipmmu_vmsa_domain *domain, */ /* TODO: What should we set the ASID to ? */ - ipmmu_write(mmu, IMUASID(utlb), 0); + ipmmu_imuasid_write(mmu, utlb, 0); /* TODO: Do we need to flush the microTLB ? */ - ipmmu_write(mmu, IMUCTR(utlb), - IMUCTR_TTSEL_MMU(domain->context_id) | IMUCTR_FLUSH | - IMUCTR_MMUEN); + ipmmu_imuctr_write(mmu, utlb, IMUCTR_TTSEL_MMU(domain->context_id) | + IMUCTR_FLUSH | IMUCTR_MMUEN); mmu->utlb_ctx[utlb] = domain->context_id; } @@ -291,7 +307,7 @@ static void ipmmu_utlb_disable(struct ipmmu_vmsa_domain *domain, { struct ipmmu_vmsa_device *mmu = domain->mmu; - ipmmu_write(mmu, IMUCTR(utlb), 0); + ipmmu_imuctr_write(mmu, utlb, 0); mmu->utlb_ctx[utlb] = IPMMU_CTX_INVALID; } |