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[6/6] drm/i915: Check workaround status on dfs read time

Message ID 1411052315-22979-7-git-send-email-mika.kuoppala@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Mika Kuoppala Sept. 18, 2014, 2:58 p.m. UTC 
As the workaround list has the value as initialization time
constant, we can do the simple checking on the go. For the
user that doesn't have igt at hand and still server the igt's
needs.

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)
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Patch

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index c35c6ce..962c41e 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2659,16 +2659,16 @@  static int i915_wa_registers(struct seq_file *m, void *unused)
 
 	seq_printf(m, "Workarounds applied: %d\n", dev_priv->workarounds.count);
 	for (i = 0; i < dev_priv->workarounds.count; ++i) {
-		u32 addr, mask;
+		u32 addr, mask, value, read;
+		bool ok;
 
 		addr = dev_priv->workarounds.reg[i].addr;
 		mask = dev_priv->workarounds.reg[i].mask;
-		dev_priv->workarounds.reg[i].value = I915_READ(addr) | mask;
-		if (dev_priv->workarounds.reg[i].addr)
-			seq_printf(m, "0x%X: 0x%08X, mask: 0x%08X\n",
-				   dev_priv->workarounds.reg[i].addr,
-				   dev_priv->workarounds.reg[i].value,
-				   dev_priv->workarounds.reg[i].mask);
+		value = dev_priv->workarounds.reg[i].value;
+		read = I915_READ(addr);
+		ok = (value & mask) == (read & mask);
+		seq_printf(m, "0x%X: 0x%08X, mask: 0x%08X, read: 0x%08x, status: %s\n",
+			   addr, value, mask, read, ok ? "OK" : "FAIL");
 	}
 
 	gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL);