[PATCH 32/62] drm/i915/bdw: ppgtt info in debugfs

Ben Widawsky
2013-11-03T04:08:18Z

It's not so much that the information is terribly useful, but rather
that the gen6/7 information is completely useless.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
drivers/gpu/drm/i915/i915_debugfs.c | 49 +++++++++++++++++++++++++++++++------
1 file changed, 42 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index fa3492f..060dbf2 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1646,18 +1646,37 @@ static int i915_swizzle_info(struct seq_file *m, void *data)
return 0;
}

-static int i915_ppgtt_info(struct seq_file *m, void *data)
+static void gen8_ppgtt_info(struct seq_file *m, struct drm_device *dev)
{
- struct drm_info_node *node = (struct drm_info_node *) m->private;
- struct drm_device *dev = node->minor->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_ring_buffer *ring;
- int i, ret;
+ struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
+ int unused, i;

+ if (!ppgtt)
+ return;
+
+ seq_printf(m, "Page directories: %d\n", ppgtt->num_pd_pages);
+ seq_printf(m, "Page tables: %d\n", ppgtt->num_pt_pages);
+ for_each_ring(ring, dev_priv, unused) {
+ seq_printf(m, "%s\n", ring->name);
+ for (i = 0; i < 4; i++) {
+ u32 offset = 0x270 + i * 8;
+ u64 pdp = I915_READ(ring->mmio_base + offset + 4);
+ pdp <<= 32;
+ pdp |= I915_READ(ring->mmio_base + offset);
+ for (i = 0; i < 4; i++)
+ seq_printf(m, "\tPDP%d 0x%016llx\n", i, pdp);
+ }
+ }
+}
+
+static void gen6_ppgtt_info(struct seq_file *m, struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_ring_buffer *ring;
+ int i;

- ret = mutex_lock_interruptible(&dev->struct_mutex);
- if (ret)
- return ret;
if (INTEL_INFO(dev)->gen == 6)
seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));

@@ -1676,6 +1695,22 @@ static int i915_ppgtt_info(struct seq_file *m, void *data)
seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
}
seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
+}
+
+static int i915_ppgtt_info(struct seq_file *m, void *data)
+{
+ struct drm_info_node *node = (struct drm_info_node *) m->private;
+ struct drm_device *dev = node->minor->dev;
+
+ int ret = mutex_lock_interruptible(&dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ if (INTEL_INFO(dev)->gen >= 8)
+ gen8_ppgtt_info(m, dev);
+ else if (INTEL_INFO(dev)->gen >= 6)
+ gen6_ppgtt_info(m, dev);
+
mutex_unlock(&dev->struct_mutex);

return 0;
--
1.8.4.2