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drm/i915: Generalize default context setup 

The plan to to make every file descriptor have a default context. To
accommodate this, generalize out default context setup function so it
can be used at file open time.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ben Widawsky 2013-12-06 14:11:05 -08:00 committed by Daniel Vetter
parent 2fa48d8d4a
commit a45d0f6a7f
1 changed files with 12 additions and 13 deletions
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25
drivers/gpu/drm/i915/i915_gem_context.c
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@ -212,9 +212,9 @@ static inline bool is_default_context(struct i915_hw_context *ctx)
* context state of the GPU for applications that don't utilize HW contexts, as
* well as an idle case.
*/
static int create_default_context(struct drm_device *dev)
static struct i915_hw_context *
create_default_context(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct i915_hw_context *ctx;
int ret;
@ -222,7 +222,7 @@ static int create_default_context(struct drm_device *dev)
ctx = create_hw_context(dev, NULL);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
return ctx;
/* We may need to do things with the shrinker which require us to
* immediately switch back to the default context. This can cause a
@ -237,14 +237,12 @@ static int create_default_context(struct drm_device *dev)
goto err_destroy;
}
dev_priv->ring[RCS].default_context = ctx;
DRM_DEBUG_DRIVER("Default HW context loaded\n");
return 0;
return ctx;
err_destroy:
i915_gem_context_unreference(ctx);
return ret;
return ERR_PTR(ret);
}
void i915_gem_context_reset(struct drm_device *dev)
@ -294,7 +292,7 @@ int i915_gem_context_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_ring_buffer *ring;
int i, ret;
int i;
if (!HAS_HW_CONTEXTS(dev))
return 0;
@ -311,11 +309,12 @@ int i915_gem_context_init(struct drm_device *dev)
return -E2BIG;
}
ret = create_default_context(dev);
if (ret) {
DRM_DEBUG_DRIVER("Disabling HW Contexts; create failed %d\n",
ret);
return ret;
dev_priv->ring[RCS].default_context = create_default_context(dev);
if (IS_ERR_OR_NULL(dev_priv->ring[RCS].default_context)) {
DRM_DEBUG_DRIVER("Disabling HW Contexts; create failed %ld\n",
PTR_ERR(dev_priv->ring[RCS].default_context));
return PTR_ERR(dev_priv->ring[RCS].default_context);
}
for (i = RCS + 1; i < I915_NUM_RINGS; i++) {