[PATCH v13 4/7] remoteproc: Introduce release_fw optional operation
From: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Date: 2024-11-04 13:38:22
Also in:
linux-arm-kernel, linux-remoteproc, lkml, op-tee
Subsystem:
remote processor (remoteproc) subsystem, the rest · Maintainers:
Bjorn Andersson, Mathieu Poirier, Linus Torvalds
This patch updates the rproc_ops struct to include an optional
release_fw function.
The release_fw ops is responsible for releasing the remote processor
firmware image. The ops is called in the following cases:
- An error occurs in rproc_start() between the loading of the segments and
the start of the remote processor.
- after stopping the remote processor.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
---
Updates from version V11:
- fix typo in @release_fw comment
---
drivers/remoteproc/remoteproc_core.c | 5 +++++
include/linux/remoteproc.h | 3 +++
2 files changed, 8 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 7694817f25d4..46863e1ca307 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c@@ -1258,6 +1258,9 @@ static int rproc_alloc_registered_carveouts(struct rproc *rproc) static void rproc_release_fw(struct rproc *rproc) { + if (rproc->ops->release_fw) + rproc->ops->release_fw(rproc); + /* Free the copy of the resource table */ kfree(rproc->cached_table); rproc->cached_table = NULL;
@@ -1377,6 +1380,8 @@ static int rproc_start(struct rproc *rproc, const struct firmware *fw) unprepare_subdevices: rproc_unprepare_subdevices(rproc); reset_table_ptr: + if (rproc->ops->release_fw) + rproc->ops->release_fw(rproc); rproc->table_ptr = rproc->cached_table; return ret;
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 2e0ddcb2d792..08e0187a84d9 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h@@ -381,6 +381,8 @@ enum rsc_handling_status { * @panic: optional callback to react to system panic, core will delay * panic at least the returned number of milliseconds * @coredump: collect firmware dump after the subsystem is shutdown + * @release_fw: optional function to release the firmware image from ROM memories. + * This function is called after stopping the remote processor or in case of an error */ struct rproc_ops { int (*prepare)(struct rproc *rproc);
@@ -403,6 +405,7 @@ struct rproc_ops { u64 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw); unsigned long (*panic)(struct rproc *rproc); void (*coredump)(struct rproc *rproc); + void (*release_fw)(struct rproc *rproc); }; /**
--
2.25.1