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From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
	Ohad Ben-Cohen <ohad@wizery.com>,
	linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com
Subject: Re: [PATCH 2/9] rpmsg: core: add channel creation internal API
Date: Mon, 24 Aug 2020 16:44:46 -0600	[thread overview]
Message-ID: <20200824224446.GC3938186@xps15> (raw)
In-Reply-To: <20200731114732.12815-3-arnaud.pouliquen@st.com>

Hi Arnaud,

On Fri, Jul 31, 2020 at 01:47:25PM +0200, Arnaud Pouliquen wrote:
> Add the channel creation API as a first step to be able to define the
> name service announcement as a rpmsg driver independent from the RPMsg
> virtio bus.
> 
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
> ---
>  drivers/rpmsg/rpmsg_core.c     | 37 ++++++++++++++++++++++++++++++++++
>  drivers/rpmsg/rpmsg_internal.h | 12 +++++++++++
>  2 files changed, 49 insertions(+)
> 
> diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c
> index a6361cad608b..ae7da4a2e528 100644
> --- a/drivers/rpmsg/rpmsg_core.c
> +++ b/drivers/rpmsg/rpmsg_core.c
> @@ -20,6 +20,43 @@
>  
>  #include "rpmsg_internal.h"
>  
> +/**
> + * rpmsg_create_channel() - create a new rpmsg channel
> + * using its name and address info.
> + * @rpdev: rpmsg driver
> + * @chinfo: channel_info to bind
> + *
> + * Returns a pointer to the new rpmsg device on success, or NULL on error.
> + */
> +struct rpmsg_device *
> +	rpmsg_create_channel(struct rpmsg_device *rpdev,
> +			     struct rpmsg_channel_info *chinfo)
> +{
> +	if (WARN_ON(!rpdev) || !rpdev->ops->create_channel)
> +		return NULL;

Ok for the WARN_ON().  In another if(), I would check for ops and
ops->create_channel().  Same for the release() operation.

> +
> +	return rpdev->ops->create_channel(rpdev, chinfo);
> +}
> +EXPORT_SYMBOL(rpmsg_create_channel);
> +
> +/**
> + * rpmsg_release_channel() - release a rpmsg channel
> + * using its name and address info.
> + * @rpdev: rpmsg driver
> + * @chinfo: channel_info to bind
> + *
> + * Returns a pointer to the new rpmsg device on success, or NULL on error.
> + */
> +int rpmsg_release_channel(struct rpmsg_device *rpdev,
> +			  struct rpmsg_channel_info *chinfo)
> +{
> +	if (WARN_ON(!rpdev) || !rpdev->ops->release_channel)
> +		return 0;
> +
> +	return rpdev->ops->release_channel(rpdev, chinfo);
> +}
> +EXPORT_SYMBOL(rpmsg_release_channel);
> +
>  /**
>   * rpmsg_create_ept() - create a new rpmsg_endpoint
>   * @rpdev: rpmsg channel device
> diff --git a/drivers/rpmsg/rpmsg_internal.h b/drivers/rpmsg/rpmsg_internal.h
> index 3fc83cd50e98..d5ab286d0e5e 100644
> --- a/drivers/rpmsg/rpmsg_internal.h
> +++ b/drivers/rpmsg/rpmsg_internal.h
> @@ -20,6 +20,8 @@
>  
>  /**
>   * struct rpmsg_device_ops - indirection table for the rpmsg_device operations
> + * @create_channel:	create backend-specific channel, optional
> + * @release_channel:	release backend-specific channel, optional
>   * @create_ept:		create backend-specific endpoint, required
>   * @announce_create:	announce presence of new channel, optional
>   * @announce_destroy:	announce destruction of channel, optional
> @@ -29,6 +31,11 @@
>   * advertise new channels implicitly by creating the endpoints.
>   */
>  struct rpmsg_device_ops {
> +	struct rpmsg_device *(*create_channel)(struct rpmsg_device *rpdev,
> +					     struct rpmsg_channel_info *chinfo);
> +	int (*release_channel)(struct rpmsg_device *rpdev,
> +			       struct rpmsg_channel_info *chinfo);
> +
>  	struct rpmsg_endpoint *(*create_ept)(struct rpmsg_device *rpdev,
>  					    rpmsg_rx_cb_t cb, void *priv,
>  					    struct rpmsg_channel_info chinfo);
> @@ -75,6 +82,11 @@ int rpmsg_unregister_device(struct device *parent,
>  struct device *rpmsg_find_device(struct device *parent,
>  				 struct rpmsg_channel_info *chinfo);
>  
> +struct rpmsg_device *
> +	rpmsg_create_channel(struct rpmsg_device *rpdev,
> +			     struct rpmsg_channel_info *chinfo);
> +int rpmsg_release_channel(struct rpmsg_device *rpdev,
> +			  struct rpmsg_channel_info *chinfo);
>  /**
>   * rpmsg_chrdev_register_device() - register chrdev device based on rpdev
>   * @rpdev:	prepared rpdev to be used for creating endpoints
> -- 
> 2.17.1
> 

  reply	other threads:[~2020-08-24 22:44 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-31 11:47 [PATCH 0/9] introduce name service announcement rpmsg driver Arnaud Pouliquen
2020-07-31 11:47 ` [PATCH 1/9] rpmsg: virtio: rename rpmsg_create_channel Arnaud Pouliquen
2020-07-31 11:47 ` [PATCH 2/9] rpmsg: core: add channel creation internal API Arnaud Pouliquen
2020-08-24 22:44   ` Mathieu Poirier [this message]
2020-07-31 11:47 ` [PATCH 3/9] rpmsg: virtio: add rpmsg channel device ops Arnaud Pouliquen
2020-07-31 11:47 ` [PATCH 4/9] rpmsg: define the name service announcement as reserved address Arnaud Pouliquen
2020-07-31 11:47 ` [PATCH 5/9] rpmsg: introduce reserved rpmsg driver for ns announcement Arnaud Pouliquen
2020-08-05  9:05   ` kernel test robot
2020-08-24 22:47   ` Mathieu Poirier
2020-08-25 11:57     ` Arnaud POULIQUEN
2020-08-25 14:36       ` Mathieu Poirier
2020-07-31 11:47 ` [PATCH 6/9] rpmsg: virtio: use rpmsg ns device for the " Arnaud Pouliquen
2020-08-24 22:48   ` Mathieu Poirier
2020-08-25 12:02     ` Arnaud POULIQUEN
2020-07-31 11:47 ` [PATCH 7/9] rpmsg: ns: add name service announcement service Arnaud Pouliquen
2020-07-31 11:47 ` [PATCH 8/9] rpmsg: virtio: use rpmsg_ns driver to manage ns announcement Arnaud Pouliquen
2020-08-25 16:54   ` Mathieu Poirier
2020-08-26  7:42     ` Arnaud POULIQUEN
2020-08-26 22:10       ` Mathieu Poirier
2020-08-27  7:03         ` Arnaud POULIQUEN
2020-07-31 11:47 ` [PATCH 9/9] rpmsg: ns: name service announcement endianness Arnaud Pouliquen
2020-08-24 23:04   ` Mathieu Poirier
2020-08-20 22:32 ` [PATCH 0/9] introduce name service announcement rpmsg driver Mathieu Poirier

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