[Intel-gfx] [PATCH v2] drm/i915: move ring init to intel_ringbuffer.c

[Ben Widawsky]

This is precursor to some work I'm doing, but I think it stands nicely
as its own refactor.

v2: skip teardown returning on success (BUG)

Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_gem.c         | 36 +---------------------
 drivers/gpu/drm/i915/intel_ringbuffer.c | 53 +++++++++++++++++++++++++++++++--
 drivers/gpu/drm/i915/intel_ringbuffer.h |  6 ++--
 3 files changed, 53 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 53c3946..3a5983b 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3726,22 +3726,6 @@ void i915_gem_init_ppgtt(struct drm_device *dev)
 	}
 }
 
-static bool
-intel_enable_blt(struct drm_device *dev)
-{
-	if (!HAS_BLT(dev))
-		return false;
-
-	/* The blitter was dysfunctional on early prototypes */
-	if (IS_GEN6(dev) && dev->pdev->revision < 8) {
-		DRM_INFO("BLT not supported on this pre-production hardware;"
-			 " graphics performance will be degraded.\n");
-		return false;
-	}
-
-	return true;
-}
-
 int
 i915_gem_init_hw(struct drm_device *dev)
 {
@@ -3755,22 +3739,10 @@ i915_gem_init_hw(struct drm_device *dev)
 
 	i915_gem_init_swizzling(dev);
 
-	ret = intel_init_render_ring_buffer(dev);
+	ret = intel_init_ring_buffers(dev);
 	if (ret)
 		return ret;
 
-	if (HAS_BSD(dev)) {
-		ret = intel_init_bsd_ring_buffer(dev);
-		if (ret)
-			goto cleanup_render_ring;
-	}
-
-	if (intel_enable_blt(dev)) {
-		ret = intel_init_blt_ring_buffer(dev);
-		if (ret)
-			goto cleanup_bsd_ring;
-	}
-
 	dev_priv->next_seqno = 1;
 
 	/*
@@ -3781,12 +3753,6 @@ i915_gem_init_hw(struct drm_device *dev)
 	i915_gem_init_ppgtt(dev);
 
 	return 0;
-
-cleanup_bsd_ring:
-	intel_cleanup_ring_buffer(&dev_priv->ring[VCS]);
-cleanup_render_ring:
-	intel_cleanup_ring_buffer(&dev_priv->ring[RCS]);
-	return ret;
 }
 
 static bool
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index ddc4859..13e078c 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1359,7 +1359,7 @@ static int blt_ring_flush(struct intel_ring_buffer *ring,
 	return 0;
 }
 
-int intel_init_render_ring_buffer(struct drm_device *dev)
+static int intel_init_render_ring_buffer(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	struct intel_ring_buffer *ring = &dev_priv->ring[RCS];
@@ -1489,7 +1489,7 @@ int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size)
 	return 0;
 }
 
-int intel_init_bsd_ring_buffer(struct drm_device *dev)
+static int intel_init_bsd_ring_buffer(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	struct intel_ring_buffer *ring = &dev_priv->ring[VCS];
@@ -1538,7 +1538,7 @@ int intel_init_bsd_ring_buffer(struct drm_device *dev)
 	return intel_init_ring_buffer(dev, ring);
 }
 
-int intel_init_blt_ring_buffer(struct drm_device *dev)
+static int intel_init_blt_ring_buffer(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
@@ -1565,3 +1565,50 @@ int intel_init_blt_ring_buffer(struct drm_device *dev)
 
 	return intel_init_ring_buffer(dev, ring);
 }
+
+static bool
+intel_enable_blt(struct drm_device *dev)
+{
+	if (!HAS_BLT(dev))
+		return false;
+
+	/* The blitter was dysfunctional on early prototypes */
+	if (IS_GEN6(dev) && dev->pdev->revision < 8) {
+		DRM_INFO("BLT not supported on this pre-production hardware;"
+			 " graphics performance will be degraded.\n");
+		return false;
+	}
+
+	return true;
+}
+
+int intel_init_ring_buffers(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int ret;
+
+	ret = intel_init_render_ring_buffer(dev);
+	if (ret)
+		return ret;
+
+	if (HAS_BSD(dev)) {
+		ret = intel_init_bsd_ring_buffer(dev);
+		if (ret)
+			goto cleanup_render_ring;
+	}
+
+	if (intel_enable_blt(dev)) {
+		ret = intel_init_blt_ring_buffer(dev);
+		if (ret)
+			goto cleanup_bsd_ring;
+	}
+
+	return 0;
+
+cleanup_bsd_ring:
+	intel_cleanup_ring_buffer(&dev_priv->ring[VCS]);
+cleanup_render_ring:
+	intel_cleanup_ring_buffer(&dev_priv->ring[RCS]);
+
+	return ret;
+}
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 1d3c81f..ce0dd43 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -185,6 +185,8 @@ intel_read_status_page(struct intel_ring_buffer *ring,
 #define I915_GEM_HWS_INDEX		0x20
 
 void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring);
+int intel_init_ring_buffers(struct drm_device *dev);
+
 
 int __must_check intel_wait_ring_buffer(struct intel_ring_buffer *ring, int n);
 static inline int intel_wait_ring_idle(struct intel_ring_buffer *ring)
@@ -205,10 +207,6 @@ void intel_ring_advance(struct intel_ring_buffer *ring);
 
 u32 intel_ring_get_seqno(struct intel_ring_buffer *ring);
 
-int intel_init_render_ring_buffer(struct drm_device *dev);
-int intel_init_bsd_ring_buffer(struct drm_device *dev);
-int intel_init_blt_ring_buffer(struct drm_device *dev);
-
 u32 intel_ring_get_active_head(struct intel_ring_buffer *ring);
 void intel_ring_setup_status_page(struct intel_ring_buffer *ring);
 
-- 
1.7.11.1