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remoteproc: Add new attach() remoteproc operation

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Add an new attach() operation in order to properly deal with
scenarios where the remoteproc core needs to attach to a
remote processor that has been booted by another entity.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Link: https://lore.kernel.org/r/20200714195035.1426873-3-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Mathieu Poirier 2020-07-14 13:50:28 -06:00 committed by Bjorn Andersson
parent e2e5c55eed
commit a6a4f28575
2 changed files with 10 additions and 0 deletions
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8
drivers/remoteproc/remoteproc_internal.h
View file

@ -79,6 +79,14 @@ static inline int rproc_unprepare_device(struct rproc *rproc)
return 0;
}
static inline int rproc_attach_device(struct rproc *rproc)
{
if (rproc->ops->attach)
return rproc->ops->attach(rproc);
return 0;
}
static inline
int rproc_fw_sanity_check(struct rproc *rproc, const struct firmware *fw)
{

2
include/linux/remoteproc.h
View file

@ -359,6 +359,7 @@ enum rsc_handling_status {
* @unprepare: unprepare device after stop
* @start: power on the device and boot it
* @stop: power off the device
* @attach: attach to a device that his already powered up
* @kick: kick a virtqueue (virtqueue id given as a parameter)
* @da_to_va: optional platform hook to perform address translations
* @parse_fw: parse firmware to extract information (e.g. resource table)
@ -379,6 +380,7 @@ struct rproc_ops {
int (*unprepare)(struct rproc *rproc);
int (*start)(struct rproc *rproc);
int (*stop)(struct rproc *rproc);
int (*attach)(struct rproc *rproc);
void (*kick)(struct rproc *rproc, int vqid);
void * (*da_to_va)(struct rproc *rproc, u64 da, size_t len);
int (*parse_fw)(struct rproc *rproc, const struct firmware *fw);