[Intel-gfx] [PATCH 1/2] drm/i915: Collect gtier properly on HSW.

[Rodrigo Vivi]

GTIER and DEIER doesn't have same interface on HSW so this "or" operation
makes the information provided useless.

Cc: Paulo Zanoni <paulo.r.zanoni at intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h       |  1 +
 drivers/gpu/drm/i915/i915_gpu_error.c | 16 ++++++++++------
 2 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index ef38c3b..ccb97f1 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -314,6 +314,7 @@ struct drm_i915_error_state {
 	u32 eir;
 	u32 pgtbl_er;
 	u32 ier;
+	u32 gtier;
 	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 0b3f694..372fea3 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -359,6 +359,8 @@ 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 (IS_HASWELL(dev))
+		err_printf(m, "GTIER: 0x%08x\n", error->gtier);
 	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);
@@ -1135,13 +1137,15 @@ 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 (IS_HASWELL(dev)) {
+		error->ier = I915_READ(DEIER);
+		error->gtier = I915_READ(GTIER);
+	} else if (HAS_PCH_SPLIT(dev)) {
 		error->ier = I915_READ(DEIER) | I915_READ(GTIER);
-	else {
-		if (IS_GEN2(dev))
-			error->ier = I915_READ16(IER);
-		else
-			error->ier = I915_READ(IER);
+	} else if (IS_GEN2(dev)) {
+		error->ier = I915_READ16(IER);
+	} else {
+		error->ier = I915_READ(IER);
 	}
 
 	/* 4: Everything else */
-- 
1.9.3