Hi Loic,
On 7/27/18 8:14 AM, Loic Pallardy wrote:
> This patch provides a new function to find a carveout according
> to a name.
> If match found, this function returns a pointer on the corresponding
> carveout (rproc_mem_entry structure).
>
> Signed-off-by: Loic Pallardy <[email protected]>
> ---
> drivers/remoteproc/remoteproc_core.c | 42
> ++++++++++++++++++++++++++++++++++++
> 1 file changed, 42 insertions(+)
>
> diff --git a/drivers/remoteproc/remoteproc_core.c
> b/drivers/remoteproc/remoteproc_core.c
> index fe6c4e4..77b39ba 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -217,6 +217,48 @@ void *rproc_da_to_va(struct rproc *rproc, u64 da, int
> len)
> }
> EXPORT_SYMBOL(rproc_da_to_va);
>
> +/**
> + * rproc_find_carveout_by_name() - lookup the carveout region by a name
> + * @rproc: handle of a remote processor
> + * @name,..: carveout name to find (standard printf format)
> + *
> + * Platform driver has the capability to register some pre-allacoted carveout
%s/pre-allacoted/pre-allocated/
> + * (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
I guess this is the part that perhaps was being thought of for
representing internal memories as well for removing the da_to_va ops
right. Question is how to handle the different alias views for the same
address space. Anyway, that is perhaps a discussion for later given that
the current series does not remove the ops.
> + * 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.
> + *
> + * Return: a valid pointer on carveout entry on success or NULL on failure.
> + */
> +struct rproc_mem_entry *
> +rproc_find_carveout_by_name(struct rproc *rproc, const char *name, ...)
> +{
> + va_list args;
> + char _name[32];
> + struct rproc_mem_entry *carveout, *mem = NULL;
> +
> + if (!name)
> + return NULL;
> +
> + va_start(args, name);
> + vsnprintf(_name, sizeof(_name), name, args);
> + va_end(args);
> +
> + list_for_each_entry(carveout, &rproc->carveouts, node) {
> + /* Compare carveout and requested names */
> + if (!strcmp(carveout->name, _name)) {
> + mem = carveout;
Bjorn had some comments on v3 about returning carveout directly here
instead of break, avoids the mem variable. I am ok either way.
regards
Suman
> + break;
> + }
> + }
> +
> + return mem;
> +}
> +
> int rproc_alloc_vring(struct rproc_vdev *rvdev, int i)
> {
> struct rproc *rproc = rvdev->rproc;
>
