openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

iommu/arm-smmu: Remove .tlb_inv_range indirection 

Fill in 'native' iommu_flush_ops callbacks for all the
arm_smmu_flush_ops variants, and clear up the remains of the previous
.tlb_inv_range abstraction.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Robin Murphy 2019-09-18 17:17:48 +01:00 committed by Will Deacon
parent 54ecb8f702
commit 3f3b8d0c9c
2 changed files with 63 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

110
drivers/iommu/arm-smmu.c
View File

@ -312,7 +312,7 @@ static void arm_smmu_tlb_inv_context_s2(void *cookie)
}
static void arm_smmu_tlb_inv_range_s1(unsigned long iova, size_t size,
size_t granule, bool leaf, void *cookie)
size_t granule, void *cookie, bool leaf)
{
struct arm_smmu_domain *smmu_domain = cookie;
struct arm_smmu_device *smmu = smmu_domain->smmu;
@ -342,7 +342,7 @@ static void arm_smmu_tlb_inv_range_s1(unsigned long iova, size_t size,
}
static void arm_smmu_tlb_inv_range_s2(unsigned long iova, size_t size,
size_t granule, bool leaf, void *cookie)
size_t granule, void *cookie, bool leaf)
{
struct arm_smmu_domain *smmu_domain = cookie;
struct arm_smmu_device *smmu = smmu_domain->smmu;
@ -362,14 +362,63 @@ static void arm_smmu_tlb_inv_range_s2(unsigned long iova, size_t size,
} while (size -= granule);
}
static void arm_smmu_tlb_inv_walk_s1(unsigned long iova, size_t size,
size_t granule, void *cookie)
{
arm_smmu_tlb_inv_range_s1(iova, size, granule, cookie, false);
arm_smmu_tlb_sync_context(cookie);
}
static void arm_smmu_tlb_inv_leaf_s1(unsigned long iova, size_t size,
size_t granule, void *cookie)
{
arm_smmu_tlb_inv_range_s1(iova, size, granule, cookie, true);
arm_smmu_tlb_sync_context(cookie);
}
static void arm_smmu_tlb_add_page_s1(struct iommu_iotlb_gather *gather,
unsigned long iova, size_t granule,
void *cookie)
{
arm_smmu_tlb_inv_range_s1(iova, granule, granule, cookie, true);
}
static void arm_smmu_tlb_inv_walk_s2(unsigned long iova, size_t size,
size_t granule, void *cookie)
{
arm_smmu_tlb_inv_range_s2(iova, size, granule, cookie, false);
arm_smmu_tlb_sync_context(cookie);
}
static void arm_smmu_tlb_inv_leaf_s2(unsigned long iova, size_t size,
size_t granule, void *cookie)
{
arm_smmu_tlb_inv_range_s2(iova, size, granule, cookie, true);
arm_smmu_tlb_sync_context(cookie);
}
static void arm_smmu_tlb_add_page_s2(struct iommu_iotlb_gather *gather,
unsigned long iova, size_t granule,
void *cookie)
{
arm_smmu_tlb_inv_range_s2(iova, granule, granule, cookie, true);
}
static void arm_smmu_tlb_inv_any_s2_v1(unsigned long iova, size_t size,
size_t granule, void *cookie)
{
arm_smmu_tlb_inv_context_s2(cookie);
}
/*
* On MMU-401 at least, the cost of firing off multiple TLBIVMIDs appears
* almost negligible, but the benefit of getting the first one in as far ahead
* of the sync as possible is significant, hence we don't just make this a
* no-op and set .tlb_sync to arm_smmu_tlb_inv_context_s2() as you might think.
* no-op and call arm_smmu_tlb_inv_context_s2() from .iotlb_sync as you might
* think.
*/
static void arm_smmu_tlb_inv_vmid_nosync(unsigned long iova, size_t size,
size_t granule, bool leaf, void *cookie)
static void arm_smmu_tlb_add_page_s2_v1(struct iommu_iotlb_gather *gather,
unsigned long iova, size_t granule,
void *cookie)
{
struct arm_smmu_domain *smmu_domain = cookie;
struct arm_smmu_device *smmu = smmu_domain->smmu;
@ -380,66 +429,33 @@ static void arm_smmu_tlb_inv_vmid_nosync(unsigned long iova, size_t size,
arm_smmu_gr0_write(smmu, ARM_SMMU_GR0_TLBIVMID, smmu_domain->cfg.vmid);
}
static void arm_smmu_tlb_inv_walk(unsigned long iova, size_t size,
size_t granule, void *cookie)
{
struct arm_smmu_domain *smmu_domain = cookie;
const struct arm_smmu_flush_ops *ops = smmu_domain->flush_ops;
ops->tlb_inv_range(iova, size, granule, false, cookie);
ops->tlb_sync(cookie);
}
static void arm_smmu_tlb_inv_leaf(unsigned long iova, size_t size,
size_t granule, void *cookie)
{
struct arm_smmu_domain *smmu_domain = cookie;
const struct arm_smmu_flush_ops *ops = smmu_domain->flush_ops;
ops->tlb_inv_range(iova, size, granule, true, cookie);
ops->tlb_sync(cookie);
}
static void arm_smmu_tlb_add_page(struct iommu_iotlb_gather *gather,
unsigned long iova, size_t granule,
void *cookie)
{
struct arm_smmu_domain *smmu_domain = cookie;
const struct arm_smmu_flush_ops *ops = smmu_domain->flush_ops;
ops->tlb_inv_range(iova, granule, granule, true, cookie);
}
static const struct arm_smmu_flush_ops arm_smmu_s1_tlb_ops = {
.tlb = {
.tlb_flush_all = arm_smmu_tlb_inv_context_s1,
.tlb_flush_walk = arm_smmu_tlb_inv_walk,
.tlb_flush_leaf = arm_smmu_tlb_inv_leaf,
.tlb_add_page = arm_smmu_tlb_add_page,
.tlb_flush_walk = arm_smmu_tlb_inv_walk_s1,
.tlb_flush_leaf = arm_smmu_tlb_inv_leaf_s1,
.tlb_add_page = arm_smmu_tlb_add_page_s1,
},
.tlb_inv_range = arm_smmu_tlb_inv_range_s1,
.tlb_sync = arm_smmu_tlb_sync_context,
};
static const struct arm_smmu_flush_ops arm_smmu_s2_tlb_ops_v2 = {
.tlb = {
.tlb_flush_all = arm_smmu_tlb_inv_context_s2,
.tlb_flush_walk = arm_smmu_tlb_inv_walk,
.tlb_flush_leaf = arm_smmu_tlb_inv_leaf,
.tlb_add_page = arm_smmu_tlb_add_page,
.tlb_flush_walk = arm_smmu_tlb_inv_walk_s2,
.tlb_flush_leaf = arm_smmu_tlb_inv_leaf_s2,
.tlb_add_page = arm_smmu_tlb_add_page_s2,
},
.tlb_inv_range = arm_smmu_tlb_inv_range_s2,
.tlb_sync = arm_smmu_tlb_sync_context,
};
static const struct arm_smmu_flush_ops arm_smmu_s2_tlb_ops_v1 = {
.tlb = {
.tlb_flush_all = arm_smmu_tlb_inv_context_s2,
.tlb_flush_walk = arm_smmu_tlb_inv_walk,
.tlb_flush_leaf = arm_smmu_tlb_inv_leaf,
.tlb_add_page = arm_smmu_tlb_add_page,
.tlb_flush_walk = arm_smmu_tlb_inv_any_s2_v1,
.tlb_flush_leaf = arm_smmu_tlb_inv_any_s2_v1,
.tlb_add_page = arm_smmu_tlb_add_page_s2_v1,
},
.tlb_inv_range = arm_smmu_tlb_inv_vmid_nosync,
.tlb_sync = arm_smmu_tlb_sync_vmid,
};

2
drivers/iommu/arm-smmu.h
View File

@ -306,8 +306,6 @@ enum arm_smmu_domain_stage {
struct arm_smmu_flush_ops {
struct iommu_flush_ops tlb;
void (*tlb_inv_range)(unsigned long iova, size_t size, size_t granule,
bool leaf, void *cookie);
void (*tlb_sync)(void *cookie);
};