This patch provides a new function to find a carveout according to a name. If match found, this function returns a point on the corresponding carveout.
Signed-off-by: Loic Pallardy <[email protected]> --- drivers/remoteproc/remoteproc_core.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 2b7effb..8d990b1 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -367,6 +367,42 @@ void *rproc_find_carveout_by_da(struct rproc *rproc, u64 da, int len) return va; } +/** + * rproc_find_carveout_by_name() - lookup the carveout region by a name + * @rproc: handle of a remote processor + * @name: carveout name to find + * + * Platform driver has the capability to register some pre-allacoted carveout + * (physically contiguous memory regions) before rproc firmware loading and + * associated resource table analysis. These regions may be dedicated memory + * regions internal to the coprocessor or specified DDR region with specific + * attributes + * + * This function is a helper function with which we can go over the + * allocated carveouts and return associated region characteristics like + * coprocessor address, length or processor virtual address. + * + * The function returns a valid pointer on carveout entry on success or NULL on failure. + */ +struct rproc_mem_entry * +rproc_find_carveout_by_name(struct rproc *rproc, char *name) +{ + struct rproc_mem_entry *carveout, *mem = NULL; + + if (!name) + return NULL; + + list_for_each_entry(carveout, &rproc->carveouts, node) { + /* Compare carveout and requested names */ + if (!strcmp(carveout->name, name)) { + mem = carveout; + break; + } + } + + return mem; +} + int rproc_alloc_vring(struct rproc_vdev *rvdev, int i) { struct rproc *rproc = rvdev->rproc; -- 1.9.1
