Initial attempt at supporting VM_BIND for endless batch buffer.
Not tested.
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Jon Bloomfield <jon.bloomfield@xxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Chris P Wilson <chris.p.wilson@xxxxxxxxx>
Cc: Sudeep Dutt <sudeep.dutt@xxxxxxxxx>
Cc: Stuart Summers <stuart.summers@xxxxxxxxx>
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@xxxxxxxxx>
---
drivers/gpu/drm/i915/gem/i915_gem_svm.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_svm.c b/drivers/gpu/drm/i915/gem/i915_gem_svm.c
index e5e45ccc4262..dd12c2c46aa8 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_svm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_svm.c
@@ -68,9 +68,20 @@ int i915_gem_vm_bind_svm_obj(struct i915_address_space *vm,
* and we don't need to store va_start.
*/
mutex_lock(&vm->svm_mutex);
+ if (i915_vm_is_active(vm)) {
+ u64 pin_flags = vma->va_start |
+ PIN_OFFSET_FIXED | PIN_USER;
+
+ ret = i915_vma_pin(vma, 0, 0, pin_flags);
+ if (ret) {
+ mutex_unlock(&vm->mutex);
+ goto put_obj;
+ }
+ }
list_add(&vma->svm_link, &vm->svm_list);
mutex_unlock(&vm->svm_mutex);
} else {
+ /* FIXME: Do async unbind if vm is active */
vma = i915_gem_vm_lookup_svm_vma(vm, obj, va);
if (vma) {
__i915_vma_unpin(vma);
--
2.21.0.rc0.32.g243a4c7e27
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