Whenever a correctable or an uncorrectable error happens an event is sent
to the corresponding listeners of these groups.
v2: Rebase
Signed-off-by: Aravind Iddamsetty <aravind.iddamsetty@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/xe/xe_hw_error.c | 33 ++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_hw_error.c b/drivers/gpu/drm/xe/xe_hw_error.c
index bab6d4cf0b69..b0befb5e01cb 100644
--- a/drivers/gpu/drm/xe/xe_hw_error.c
+++ b/drivers/gpu/drm/xe/xe_hw_error.c
@@ -786,6 +786,37 @@ xe_soc_hw_error_handler(struct xe_tile *tile, const enum hardware_error hw_err)
(HARDWARE_ERROR_MAX << 1) + 1);
}
+static void
+generate_netlink_event(struct xe_device *xe, const enum hardware_error hw_err)
+{
+ struct sk_buff *msg;
+ void *hdr;
+
+ if (!xe->drm.drm_genl_family.module)
+ return;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
+ if (!msg) {
+ drm_dbg_driver(&xe->drm, "couldn't allocate memory for error multicast event\n");
+ return;
+ }
+
+ hdr = genlmsg_put(msg, 0, 0, &xe->drm.drm_genl_family, 0, DRM_RAS_CMD_ERROR_EVENT);
+ if (!hdr) {
+ drm_dbg_driver(&xe->drm, "mutlicast msg buffer is small\n");
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_end(msg, hdr);
+
+ genlmsg_multicast(&xe->drm.drm_genl_family, msg, 0,
+ hw_err ?
+ DRM_GENL_MCAST_UNCORR_ERR
+ : DRM_GENL_MCAST_CORR_ERR,
+ GFP_ATOMIC);
+}
+
static void
xe_hw_error_source_handler(struct xe_tile *tile, const enum hardware_error hw_err)
{
@@ -849,6 +880,8 @@ xe_hw_error_source_handler(struct xe_tile *tile, const enum hardware_error hw_er
}
xe_mmio_write32(gt, DEV_ERR_STAT_REG(hw_err), errsrc);
+
+ generate_netlink_event(tile_to_xe(tile), hw_err);
unlock:
spin_unlock_irqrestore(&tile_to_xe(tile)->irq.lock, flags);
}
--
2.25.1
