[PATCH v1 1/3] drm/xe/cri: Setup hardware error routing

[Raag Jadav <raag.jadav@intel.com>]

Setup hardware error routing based on XE_WEDGED_MODE_UPON_ANY_HANG_NO_RESET
which will be used for debug cases on Crescent Island.

Signed-off-by: Raag Jadav <raag.jadav@intel.com>
---
 drivers/gpu/drm/xe/regs/xe_hw_error_regs.h |  5 +++++
 drivers/gpu/drm/xe/xe_hw_error.c           | 22 +++++++++++++++++++++-
 drivers/gpu/drm/xe/xe_hw_error.h           |  1 +
 3 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/regs/xe_hw_error_regs.h b/drivers/gpu/drm/xe/regs/xe_hw_error_regs.h
index c146b9ef44eb..88593f0a48fd 100644
--- a/drivers/gpu/drm/xe/regs/xe_hw_error_regs.h
+++ b/drivers/gpu/drm/xe/regs/xe_hw_error_regs.h
@@ -11,6 +11,11 @@
 
 #define HEC_UNCORR_FW_ERR_DW0(base)                    XE_REG((base) + 0x124)
 
+#define DEV_ERR_ROUTING_CTRL			XE_REG(0x100170)
+#define   FATAL_ERR_ROUTING			BIT(2)
+#define   NONFATAL_ERR_ROUTING			BIT(1)
+#define   CORR_ERR_ROUTING			BIT(0)
+
 #define DEV_ERR_STAT_NONFATAL			0x100178
 #define DEV_ERR_STAT_CORRECTABLE		0x10017c
 #define DEV_ERR_STAT_REG(x)			XE_REG(_PICK_EVEN((x), \
diff --git a/drivers/gpu/drm/xe/xe_hw_error.c b/drivers/gpu/drm/xe/xe_hw_error.c
index 8c65291f36fc..eb557266d083 100644
--- a/drivers/gpu/drm/xe/xe_hw_error.c
+++ b/drivers/gpu/drm/xe/xe_hw_error.c
@@ -146,6 +146,23 @@ void xe_hw_error_irq_handler(struct xe_tile *tile, const u32 master_ctl)
 			hw_error_source_handler(tile, hw_err);
 }
 
+/**
+ * xe_hw_error_irq_route - irq routing of hw errors
+ * @xe: xe device instance
+ *
+ * Set irq routing of hw errors.
+ */
+void xe_hw_error_irq_route(struct xe_device *xe)
+{
+	u32 mask = CORR_ERR_ROUTING | NONFATAL_ERR_ROUTING | FATAL_ERR_ROUTING;
+	bool irq = xe->wedged.mode == XE_WEDGED_MODE_UPON_ANY_HANG_NO_RESET;
+	struct xe_tile *tile;
+	u8 id;
+
+	for_each_tile(tile, xe, id)
+		xe_mmio_rmw32(&tile->mmio, DEV_ERR_ROUTING_CTRL, mask, irq ? mask : 0);
+}
+
 /*
  * Process hardware errors during boot
  */
@@ -178,5 +195,8 @@ void xe_hw_error_init(struct xe_device *xe)
 
 	INIT_WORK(&tile->csc_hw_error_work, csc_hw_error_work);
 
-	process_hw_errors(xe);
+	if (xe->info.platform == XE_CRESCENTISLAND)
+		xe_hw_error_irq_route(xe);
+	else
+		process_hw_errors(xe);
 }
diff --git a/drivers/gpu/drm/xe/xe_hw_error.h b/drivers/gpu/drm/xe/xe_hw_error.h
index d86e28c5180c..8f155b66b5f1 100644
--- a/drivers/gpu/drm/xe/xe_hw_error.h
+++ b/drivers/gpu/drm/xe/xe_hw_error.h
@@ -11,5 +11,6 @@ struct xe_tile;
 struct xe_device;
 
 void xe_hw_error_irq_handler(struct xe_tile *tile, const u32 master_ctl);
+void xe_hw_error_irq_route(struct xe_device *xe);
 void xe_hw_error_init(struct xe_device *xe);
 #endif
-- 
2.43.0