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msm: kgsl: Initialize cb_num for secure context

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Currently we are not initializing cb_num for secure context.
This is causing problems in the kgsl fault handler path when
there is a pagefault for secure context. Hence initialize cb_num
for secure context.

Change-Id: I35a37193f512f315f443e9f0d92fdae11411bbd2
Signed-off-by: Harshitha Sai Neelati <hsaineel@codeaurora.org>
This commit is contained in:
Harshitha Sai Neelati 2021-07-15 19:13:59 +05:30
commit ded39f3537
1 changed files with 12 additions and 0 deletions
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12
drivers/gpu/msm/kgsl_iommu.c
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@ -1230,6 +1230,7 @@ static int _init_secure_pt(struct kgsl_mmu *mmu, struct kgsl_pagetable *pt)
struct kgsl_iommu_context *ctx = &iommu->secure_context;
int secure_vmid = VMID_CP_PIXEL;
struct kgsl_global_memdesc *md;
int cb_num;
if (!mmu->secured)
return -EPERM;
@ -1259,6 +1260,17 @@ static int _init_secure_pt(struct kgsl_mmu *mmu, struct kgsl_pagetable *pt)
iommu_set_fault_handler(iommu_pt->domain,
kgsl_iommu_fault_handler, pt);
ret = iommu_domain_get_attr(iommu_pt->domain,
DOMAIN_ATTR_CONTEXT_BANK, &cb_num);
if (ret) {
dev_err(device->dev, "get DOMAIN_ATTR_CONTEXT_BANK failed: %d\n",
ret);
_free_pt(ctx, pt);
return ret;
}
ctx->cb_num = cb_num;
/* Map any pending secure global buffers */
list_for_each_entry(md, &device->globals, node) {
if (md->memdesc.flags & KGSL_MEMFLAGS_SECURE)