From 46006ceb5d029f92df405db15c9a31f0ee41628c Mon Sep 17 00:00:00 2001 From: Linu Cherian Date: Wed, 12 Feb 2025 17:19:13 +0530 Subject: coresight: core: Add provision for panic callbacks Panic callback handlers allows coresight device drivers to sync relevant trace data and trace metadata to reserved memory regions so that they can be retrieved later in the subsequent boot or in the crashdump kernel. Signed-off-by: Linu Cherian Reviewed-by: James Clark Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20250212114918.548431-4-lcherian@marvell.com --- include/linux/coresight.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux') diff --git a/include/linux/coresight.h b/include/linux/coresight.h index 17276965ff1d..3eef4e91df3f 100644 --- a/include/linux/coresight.h +++ b/include/linux/coresight.h @@ -340,6 +340,7 @@ enum cs_mode { #define link_ops(csdev) csdev->ops->link_ops #define helper_ops(csdev) csdev->ops->helper_ops #define ect_ops(csdev) csdev->ops->ect_ops +#define panic_ops(csdev) csdev->ops->panic_ops /** * struct coresight_ops_sink - basic operations for a sink @@ -409,11 +410,22 @@ struct coresight_ops_helper { int (*disable)(struct coresight_device *csdev, void *data); }; + +/** + * struct coresight_ops_panic - Generic device ops for panic handing + * + * @sync : Sync the device register state/trace data + */ +struct coresight_ops_panic { + int (*sync)(struct coresight_device *csdev); +}; + struct coresight_ops { const struct coresight_ops_sink *sink_ops; const struct coresight_ops_link *link_ops; const struct coresight_ops_source *source_ops; const struct coresight_ops_helper *helper_ops; + const struct coresight_ops_panic *panic_ops; }; static inline u32 csdev_access_relaxed_read32(struct csdev_access *csa, -- cgit v1.2.3