On Wed, 31 Aug 2016, Loic Pallardy wrote:
> With new rproc_request_resource API, rproc driver has now the
> capability to provide resources to remoteproc in order to modify
> firmware resource table.
> But in some cases, other operations are needed like compatibility
> check between resources defined at firmware level and those handled
> by rproc driver, or remoteproc local resource management when firmware
> has no resource table.
>
> This patch associates action to each resource request to:
> - verify a resource
> - update/amend a resource in firmware resource table
> - handle locally a resource
>
> Signed-off-by: Loic Pallardy <loic.pallardy@xxxxxx>
> ---
> drivers/remoteproc/remoteproc_core.c | 13 ++++++++++++-
> include/linux/remoteproc.h | 26 +++++++++++++++++++++++++-
> 2 files changed, 37 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index 3282a4e..cd64fae 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -876,16 +876,20 @@ static void rproc_dump_resource_table(struct rproc *rproc,
> }
> }
>
> -int rproc_request_resource(struct rproc *rproc, u32 type, void *resource)
> +int rproc_request_resource(struct rproc *rproc, u32 type, u32 action, void *resource)
> {
> struct device *dev = &rproc->dev;
> struct rproc_request_resource *request;
> + struct fw_rsc_vdev *v;
> int size;
>
> request = devm_kzalloc(dev, sizeof(*request), GFP_KERNEL);
> if (!request)
> return -ENOMEM;
>
> + if (action > RSC_ACT_LAST)
">=". *_LAST is not a valid request.
> + return -EINVAL;
The switch() statement below should ha
> switch (type) {
> case RSC_CARVEOUT:
> size = sizeof(struct fw_rsc_carveout);
> @@ -896,6 +900,12 @@ int rproc_request_resource(struct rproc *rproc, u32 type, void *resource)
> case RSC_TRACE:
> size = sizeof(struct fw_rsc_trace);
> break;
> + case RSC_VDEV:
> + v = resource;
> + size = sizeof(struct fw_rsc_vdev);
> + size += v->num_of_vrings * sizeof(struct fw_rsc_vdev_vring);
> + size += v->config_len;
> + break;
> default:
> dev_err(dev, "Unsupported resource type: %d\n", type);
> return -EINVAL;
> @@ -908,6 +918,7 @@ int rproc_request_resource(struct rproc *rproc, u32 type, void *resource)
> memcpy(request->resource, resource, size);
> request->type = type;
> request->size = size;
> + request->action = action;
>
> list_add_tail(&request->node, &rproc->override_resources);
>
> diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
> index 4e2f822..2b0f1d7 100644
> --- a/include/linux/remoteproc.h
> +++ b/include/linux/remoteproc.h
> @@ -335,11 +335,34 @@ struct rproc_mem_entry {
> };
>
> /**
> + * enum rproc_request_action - types of actions associated to a resource
> + * request
> + *
> + * @RSC_ACT_CHECK: request to verify this resource with firmware one
> + * @RSC_ACT_UPDATE: request to update firmware resource table with associated
> + * resource if possible
> + * @RSC_ACT_FORCE_UPDATE: force firmware resource table update with associated
> + * resource
> + * @RSC_ACT_LOCAL: request to handle this resource localy but not to update
> + * firmware resource table
> + * @RSC_ACT_LAST: just keep this one at the end
> + */
> +enum rproc_request_action {
> + RSC_ACT_VERIFY = 0,
> + RSC_ACT_UPDATE = 1,
> + RSC_ACT_FORCE_UPDATE = 2,
> + RSC_ACT_LOCAL = 3,
For reviewing purposes I suggest adding these entries as you start to
support them. Then we have the code and the suggested comment in one
patch for easy comparison.
> + RSC_ACT_LAST = 4,
> +};
> +
> +/**
> * struct rproc_requested_resources - add a resource to the resource table
> *
> * @resource: pointer to a 'struct fw_rsc_*' resource
> * @type: 'fw_resource_type' resource type
> * @size: size of resource
> + * @action: action associated the resource
> * @node: list node
> *
> * Resources can be added by platform-specific rproc drivers calling
> @@ -350,6 +373,7 @@ struct rproc_request_resource {
> void *resource;
> u32 type;
> u32 size;
> + u32 action;
> struct list_head node;
> };
>
> @@ -517,7 +541,7 @@ struct rproc_vdev {
> u32 rsc_offset;
> };
>
> -int rproc_request_resource(struct rproc *rproc, u32 type, void *res);
> +int rproc_request_resource(struct rproc *rproc, u32 type, u32 action, void *res);
> struct rproc *rproc_get_by_phandle(phandle phandle);
> struct rproc *rproc_alloc(struct device *dev, const char *name,
> const struct rproc_ops *ops,
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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