drm/i915/bdw: Export workaround data to debugfs
The workarounds that are applied are exported to a debugfs file;
this is used to verify their state after the test case (reset or
suspend/resume etc). This patch is only required to support i-g-t.
Signed-off-by: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 9d93af1..1467cc1 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2628,6 +2628,45 @@
return 0;
}
+static int intel_wa_registers(struct seq_file *m, void *unused)
+{
+ int i;
+ int ret;
+ 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;
+
+ if (!IS_BROADWELL(dev)) {
+ DRM_DEBUG_DRIVER("Workaround table not available !!\n");
+ return -EINVAL;
+ }
+
+ ret = mutex_lock_interruptible(&dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ intel_runtime_pm_get(dev_priv);
+
+ seq_printf(m, "Workarounds applied: %d\n", dev_priv->num_wa_regs);
+ for (i = 0; i < dev_priv->num_wa_regs; ++i) {
+ u32 addr, mask;
+
+ addr = dev_priv->intel_wa_regs[i].addr;
+ mask = dev_priv->intel_wa_regs[i].mask;
+ dev_priv->intel_wa_regs[i].value = I915_READ(addr) | mask;
+ if (dev_priv->intel_wa_regs[i].addr)
+ seq_printf(m, "0x%X: 0x%08X, mask: 0x%08X\n",
+ dev_priv->intel_wa_regs[i].addr,
+ dev_priv->intel_wa_regs[i].value,
+ dev_priv->intel_wa_regs[i].mask);
+ }
+
+ intel_runtime_pm_put(dev_priv);
+ mutex_unlock(&dev->struct_mutex);
+
+ return 0;
+}
+
struct pipe_crc_info {
const char *name;
struct drm_device *dev;
@@ -4159,6 +4198,7 @@
{"i915_semaphore_status", i915_semaphore_status, 0},
{"i915_shared_dplls_info", i915_shared_dplls_info, 0},
{"i915_dp_mst_info", i915_dp_mst_info, 0},
+ {"intel_wa_registers", intel_wa_registers, 0}
};
#define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)