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msm: kgsl: Add function to get context bank number

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Add a function to find the context bank a pagetable is attached
to.

Change-Id: I967c77e9d2f761440f28973485a8ce02c7d27dce
Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
This commit is contained in:
Harshdeep Dhatt 2020-01-09 08:53:12 -08:00
commit 8afc60d2e8
3 changed files with 39 additions and 0 deletions
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20
drivers/gpu/msm/kgsl_iommu.c
View file

@ -833,6 +833,25 @@ static u32 kgsl_iommu_get_contextidr(struct kgsl_pagetable *pt)
return iommu_pt->contextidr;
}
static int kgsl_iommu_get_context_bank(struct kgsl_pagetable *pt)
{
struct kgsl_iommu_pt *iommu_pt;
u32 cb_num;
int ret;
if (!pt)
return -EINVAL;
iommu_pt = pt->priv;
ret = iommu_domain_get_attr(iommu_pt->domain,
DOMAIN_ATTR_CONTEXT_BANK, &cb_num);
if (ret)
return ret;
return (int) cb_num;
}
/*
* kgsl_iommu_destroy_pagetable - Free up reaources help by a pagetable
* @mmu_specific_pt - Pointer to pagetable which is to be freed
@ -2622,6 +2641,7 @@ static struct kgsl_mmu_pt_ops iommu_pt_ops = {
.mmu_destroy_pagetable = kgsl_iommu_destroy_pagetable,
.get_ttbr0 = kgsl_iommu_get_ttbr0,
.get_contextidr = kgsl_iommu_get_contextidr,
.get_context_bank = kgsl_iommu_get_context_bank,
.get_gpuaddr = kgsl_iommu_get_gpuaddr,
.put_gpuaddr = kgsl_iommu_put_gpuaddr,
.set_svm_region = kgsl_iommu_set_svm_region,

8
drivers/gpu/msm/kgsl_mmu.c
View file

@ -544,6 +544,14 @@ void kgsl_mmu_close(struct kgsl_device *device)
mmu->mmu_ops->mmu_close(mmu);
}
int kgsl_mmu_pagetable_get_context_bank(struct kgsl_pagetable *pagetable)
{
if (PT_OP_VALID(pagetable, get_context_bank))
return pagetable->pt_ops->get_context_bank(pagetable);
return -ENOENT;
}
enum kgsl_mmutype kgsl_mmu_get_mmutype(struct kgsl_device *device)
{
return device ? device->mmu.type : KGSL_MMU_TYPE_NONE;

11
drivers/gpu/msm/kgsl_mmu.h
View file

@ -83,6 +83,7 @@ struct kgsl_mmu_pt_ops {
void (*mmu_destroy_pagetable)(struct kgsl_pagetable *pt);
u64 (*get_ttbr0)(struct kgsl_pagetable *pt);
u32 (*get_contextidr)(struct kgsl_pagetable *pt);
int (*get_context_bank)(struct kgsl_pagetable *pt);
int (*get_gpuaddr)(struct kgsl_pagetable *pt,
struct kgsl_memdesc *memdesc);
void (*put_gpuaddr)(struct kgsl_memdesc *memdesc);
@ -346,4 +347,14 @@ kgsl_mmu_pagetable_get_contextidr(struct kgsl_pagetable *pagetable)
void kgsl_mmu_map_global(struct kgsl_device *device,
struct kgsl_memdesc *memdesc);
/**
* kgsl_mmu_pagetable_get_context_bank - Return the context bank number
* @pagetable: A handle to a given pagetable
*
* This function will find the context number of the given pagetable
* Return: The context bank number the pagetable is attached to or
* negative error on failure.
*/
int kgsl_mmu_pagetable_get_context_bank(struct kgsl_pagetable *pagetable);
#endif /* __KGSL_MMU_H */