[PATCH v5 3/3] drm/xe/xe_ras: Report uncorrectable error events to userspace

[Riana Tauro <riana.tauro@intel.com>]

When the firmware reports uncorrectable errors in response to an AER
interrupt, deliver a drm-ras error event to userspace for each affected
component. Multiple errors for the same component within a single firmware
response are collapsed into one event to avoid duplicate notifications.

Signed-off-by: Riana Tauro <riana.tauro@intel.com>
---
 drivers/gpu/drm/xe/xe_ras.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_ras.c b/drivers/gpu/drm/xe/xe_ras.c
index b08c664778ff..cd1307539912 100644
--- a/drivers/gpu/drm/xe/xe_ras.c
+++ b/drivers/gpu/drm/xe/xe_ras.c
@@ -449,6 +449,7 @@ enum xe_ras_recovery_action xe_ras_process_errors(struct xe_device *xe)
 	enum xe_ras_recovery_action final_action;
 	u32 remaining = XE_SYSCTRL_FLOOD_LIMIT;
 	struct xe_ras_get_soc_error response;
+	u8 sent = 0;
 	size_t rlen;
 	int ret;
 
@@ -492,6 +493,12 @@ enum xe_ras_recovery_action xe_ras_process_errors(struct xe_device *xe)
 			xe_info(xe, "[RAS]: %s %s detected\n", comp_to_str(component),
 				sev_to_str(severity));
 
+			/* Send event once per component */
+			if (!(sent & BIT(component))) {
+				sent |= BIT(component);
+				ras_send_error_event(xe, severity, component);
+			}
+
 			switch (component) {
 			case XE_RAS_COMP_CORE_COMPUTE:
 				action = handle_core_compute_errors(arr);
-- 
2.47.1