Expose i915_find_fence_reg() for GVT-g to allocate the fence registers
for vGPUs.
Signed-off-by: Zhi Wang <zhi.a.wang@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/i915_gem_fence.c | 10 +++++++++-
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 96d9abd..30a6c99 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3377,6 +3377,7 @@ i915_gem_object_ggtt_unpin(struct drm_i915_gem_object *obj)
int __must_check i915_gem_object_get_fence(struct drm_i915_gem_object *obj);
int __must_check i915_gem_object_put_fence(struct drm_i915_gem_object *obj);
int i915_steal_fence(struct drm_i915_fence_reg *reg);
+struct drm_i915_fence_reg *i915_find_fence_reg(struct drm_device *dev);
bool i915_gem_object_pin_fence(struct drm_i915_gem_object *obj);
void i915_gem_object_unpin_fence(struct drm_i915_gem_object *obj);
diff --git a/drivers/gpu/drm/i915/i915_gem_fence.c b/drivers/gpu/drm/i915/i915_gem_fence.c
index e790d7b..9f019e5 100644
--- a/drivers/gpu/drm/i915/i915_gem_fence.c
+++ b/drivers/gpu/drm/i915/i915_gem_fence.c
@@ -308,7 +308,15 @@ i915_gem_object_put_fence(struct drm_i915_gem_object *obj)
return 0;
}
-static struct drm_i915_fence_reg *
+/**
+ * i915_find_fence_reg - find a free or unpinned fence register
+ * @dev: drm device
+ *
+ * Returns:
+ *
+ * pointer to fence register on success, error code in pointer on failure.
+ */
+struct drm_i915_fence_reg *
i915_find_fence_reg(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
--
1.9.1
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