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authorRodrigo Vivi <rodrigo.vivi@intel.com>2014-08-05 21:07:13 +0400
committerDaniel Vetter <daniel.vetter@ffwll.ch>2014-08-07 16:04:08 +0400
commit885ea5a8132224cf1ae12b8413352e8b893c8842 (patch)
tree7b139d7ebf7d34bcda8725c97fb38bb3cb23368e
parentf260fe7b2f8c32e2fb02a36d3b76ef64b61dbdc5 (diff)
downloadlinux-885ea5a8132224cf1ae12b8413352e8b893c8842.tar.xz
drm/i915: Fix DEIER and GTIER collecting for BDW.
BDW has many other Display Engine interrupts and GT interrupts registers. Collecting it properly on gpu_error_state. On debugfs all was properly listed already but besides we were also listing old DEIER and GTIER that doesn't exist on BDW anymore. This was causing unclaimed register messages v2: Fix small issues of first version and don't read DEIER regs when pipe's power well is disabled v3: bikeshed accepted: use enum pipe pipe instead of int i for pipe interection v4: Ben notice previous version was checking for display_power_enabled without using propper locks. Using _unlocked version isn't reliable and we cannot get this registers when power well is off. So let's avoid getting all DE_IER per pipe for now. If someone think this is an useful information it can be added later. v5: Ben: put back debugfs stuff that might be coverred by pm_get and use gen >= 8 trying to predict future. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81701 Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: (v3) Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
-rw-r--r--drivers/gpu/drm/i915/i915_drv.h2
-rw-r--r--drivers/gpu/drm/i915/i915_gpu_error.c19
2 files changed, 15 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index ccb97f1f8660..c70b2b67282e 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -314,7 +314,7 @@ struct drm_i915_error_state {
u32 eir;
u32 pgtbl_er;
u32 ier;
- u32 gtier;
+ u32 gtier[4];
u32 ccid;
u32 derrmr;
u32 forcewake;
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 7c478e6cedae..eab41f9390f8 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -361,8 +361,12 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
err_printf(m, "PCI ID: 0x%04x\n", dev->pdev->device);
err_printf(m, "EIR: 0x%08x\n", error->eir);
err_printf(m, "IER: 0x%08x\n", error->ier);
- if (HAS_PCH_SPLIT(dev) || IS_VALLEYVIEW(dev))
- err_printf(m, "GTIER: 0x%08x\n", error->gtier);
+ if (INTEL_INFO(dev)->gen >= 8) {
+ for (i = 0; i < 4; i++)
+ err_printf(m, "GTIER gt %d: 0x%08x\n", i,
+ error->gtier[i]);
+ } else if (HAS_PCH_SPLIT(dev) || IS_VALLEYVIEW(dev))
+ err_printf(m, "GTIER: 0x%08x\n", error->gtier[0]);
err_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
err_printf(m, "FORCEWAKE: 0x%08x\n", error->forcewake);
err_printf(m, "DERRMR: 0x%08x\n", error->derrmr);
@@ -1096,6 +1100,7 @@ static void i915_capture_reg_state(struct drm_i915_private *dev_priv,
struct drm_i915_error_state *error)
{
struct drm_device *dev = dev_priv->dev;
+ int i;
/* General organization
* 1. Registers specific to a single generation
@@ -1107,7 +1112,7 @@ static void i915_capture_reg_state(struct drm_i915_private *dev_priv,
/* 1: Registers specific to a single generation */
if (IS_VALLEYVIEW(dev)) {
- error->gtier = I915_READ(GTIER);
+ error->gtier[0] = I915_READ(GTIER);
error->ier = I915_READ(VLV_IER);
error->forcewake = I915_READ(FORCEWAKE_VLV);
}
@@ -1141,9 +1146,13 @@ static void i915_capture_reg_state(struct drm_i915_private *dev_priv,
if (HAS_HW_CONTEXTS(dev))
error->ccid = I915_READ(CCID);
- if (HAS_PCH_SPLIT(dev)) {
+ if (INTEL_INFO(dev)->gen >= 8) {
+ error->ier = I915_READ(GEN8_DE_MISC_IER);
+ for (i = 0; i < 4; i++)
+ error->gtier[i] = I915_READ(GEN8_GT_IER(i));
+ } else if (HAS_PCH_SPLIT(dev)) {
error->ier = I915_READ(DEIER);
- error->gtier = I915_READ(GTIER);
+ error->gtier[0] = I915_READ(GTIER);
} else if (IS_GEN2(dev)) {
error->ier = I915_READ16(IER);
} else if (!IS_VALLEYVIEW(dev)) {