diff mbox series

[v4,06/17] remoteproc: introduce rproc_add_carveout function

Message ID 1532697292-14272-7-git-send-email-loic.pallardy@st.com (mailing list archive)
State New, archived
Headers show
Series remoteproc: add fixed memory region support | expand

Commit Message

Loic PALLARDY July 27, 2018, 1:14 p.m. UTC 
This patch introduces a new API to allow platform driver to register
platform specific carveout regions.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
 drivers/remoteproc/remoteproc_core.c | 16 +++++++++++++++-
 include/linux/remoteproc.h           |  2 ++
 2 files changed, 17 insertions(+), 1 deletion(-)

Comments

Suman Anna Oct. 23, 2018, 5:05 p.m. UTC | #1 
Hi Bjorn, Loic,

On 7/27/18 8:14 AM, Loic Pallardy wrote:
> This patch introduces a new API to allow platform driver to register
> platform specific carveout regions.
> 
> Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Hmm, I do not prefer that this function be exported. It adds no value,
and this adds an asymmetric API for remoteproc drivers to add a mem
entry to the internal remoteproc lists, while relying on the remoteproc
core to remove them. The carveout list maintenance is a remoteproc
internal scheme, and so should be maintained that way. Further more, on
the current series, all the existing calls are immediately after a
rproc_of_resm_mem_entry_init() or a rproc_mem_entry_init() function,
which means this could very well be folded into those individual functions.

regards
Suman

> ---
>  drivers/remoteproc/remoteproc_core.c | 16 +++++++++++++++-
>  include/linux/remoteproc.h           |  2 ++
>  2 files changed, 17 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index b76760e..fe6c4e4 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -747,7 +747,7 @@ static int rproc_handle_carveout(struct rproc *rproc,
>  	if (!carveout)
>  		goto free_carv;
>  
> -	list_add_tail(&carveout->node, &rproc->carveouts);
> +	rproc_add_carveout(rproc, carveout);
>  
>  	return 0;
>  
> @@ -761,6 +761,20 @@ static int rproc_handle_carveout(struct rproc *rproc,
>  }
>  
>  /**
> + * rproc_add_carveout() - register an allocated carveout region
> + * @rproc: rproc handle
> + * @mem: memory entry to register
> + *
> + * This function registers specified memory entry in @rproc carveouts list.
> + * Specified carveout should have been allocated before registering.
> + */
> +void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry *mem)
> +{
> +	list_add_tail(&mem->node, &rproc->carveouts);
> +}
> +EXPORT_SYMBOL(rproc_add_carveout);
> +
> +/**
>   * rproc_mem_entry_init() - allocate and initialize rproc_mem_entry struct
>   * @dev: pointer on device struct
>   * @va: virtual address
> diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
> index 4bc961f..55f30fc 100644
> --- a/include/linux/remoteproc.h
> +++ b/include/linux/remoteproc.h
> @@ -558,6 +558,8 @@ struct rproc *rproc_alloc(struct device *dev, const char *name,
>  int rproc_del(struct rproc *rproc);
>  void rproc_free(struct rproc *rproc);
>  
> +void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry *mem);
> +
>  struct rproc_mem_entry *
>  rproc_mem_entry_init(struct device *dev,
>  		     void *va, dma_addr_t dma, int len, u32 da,
>
Loic PALLARDY Oct. 23, 2018, 7:48 p.m. UTC | #2 
> -----Original Message-----
> From: Suman Anna <s-anna@ti.com>
> Sent: mardi 23 octobre 2018 19:05
> To: Loic PALLARDY <loic.pallardy@st.com>; bjorn.andersson@linaro.org;
> ohad@wizery.com
> Cc: linux-remoteproc@vger.kernel.org; linux-kernel@vger.kernel.org;
> Arnaud POULIQUEN <arnaud.pouliquen@st.com>;
> benjamin.gaignard@linaro.org
> Subject: Re: [PATCH v4 06/17] remoteproc: introduce rproc_add_carveout
> function
> 
> Hi Bjorn, Loic,
> 
> On 7/27/18 8:14 AM, Loic Pallardy wrote:
> > This patch introduces a new API to allow platform driver to register
> > platform specific carveout regions.
> >
> > Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
> > Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> 
> Hmm, I do not prefer that this function be exported. It adds no value,
> and this adds an asymmetric API for remoteproc drivers to add a mem
> entry to the internal remoteproc lists, while relying on the remoteproc
> core to remove them. The carveout list maintenance is a remoteproc
> internal scheme, and so should be maintained that way. Further more, on
> the current series, all the existing calls are immediately after a
> rproc_of_resm_mem_entry_init() or a rproc_mem_entry_init() function,
> which means this could very well be folded into those individual functions.
> 
I think it has been introduced in first series. Look that rproc_add_carveout() call could be integrated in helper functions now.
I can propose a patch to correct this.

Regards,
Loic
> regards
> Suman
> 
> > ---
> >  drivers/remoteproc/remoteproc_core.c | 16 +++++++++++++++-
> >  include/linux/remoteproc.h           |  2 ++
> >  2 files changed, 17 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/remoteproc/remoteproc_core.c
> b/drivers/remoteproc/remoteproc_core.c
> > index b76760e..fe6c4e4 100644
> > --- a/drivers/remoteproc/remoteproc_core.c
> > +++ b/drivers/remoteproc/remoteproc_core.c
> > @@ -747,7 +747,7 @@ static int rproc_handle_carveout(struct rproc
> *rproc,
> >  	if (!carveout)
> >  		goto free_carv;
> >
> > -	list_add_tail(&carveout->node, &rproc->carveouts);
> > +	rproc_add_carveout(rproc, carveout);
> >
> >  	return 0;
> >
> > @@ -761,6 +761,20 @@ static int rproc_handle_carveout(struct rproc
> *rproc,
> >  }
> >
> >  /**
> > + * rproc_add_carveout() - register an allocated carveout region
> > + * @rproc: rproc handle
> > + * @mem: memory entry to register
> > + *
> > + * This function registers specified memory entry in @rproc carveouts list.
> > + * Specified carveout should have been allocated before registering.
> > + */
> > +void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry
> *mem)
> > +{
> > +	list_add_tail(&mem->node, &rproc->carveouts);
> > +}
> > +EXPORT_SYMBOL(rproc_add_carveout);
> > +
> > +/**
> >   * rproc_mem_entry_init() - allocate and initialize rproc_mem_entry struct
> >   * @dev: pointer on device struct
> >   * @va: virtual address
> > diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
> > index 4bc961f..55f30fc 100644
> > --- a/include/linux/remoteproc.h
> > +++ b/include/linux/remoteproc.h
> > @@ -558,6 +558,8 @@ struct rproc *rproc_alloc(struct device *dev, const
> char *name,
> >  int rproc_del(struct rproc *rproc);
> >  void rproc_free(struct rproc *rproc);
> >
> > +void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry
> *mem);
> > +
> >  struct rproc_mem_entry *
> >  rproc_mem_entry_init(struct device *dev,
> >  		     void *va, dma_addr_t dma, int len, u32 da,
> >
diff mbox series

Patch

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index b76760e..fe6c4e4 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -747,7 +747,7 @@  static int rproc_handle_carveout(struct rproc *rproc,
 	if (!carveout)
 		goto free_carv;
 
-	list_add_tail(&carveout->node, &rproc->carveouts);
+	rproc_add_carveout(rproc, carveout);
 
 	return 0;
 
@@ -761,6 +761,20 @@  static int rproc_handle_carveout(struct rproc *rproc,
 }
 
 /**
+ * rproc_add_carveout() - register an allocated carveout region
+ * @rproc: rproc handle
+ * @mem: memory entry to register
+ *
+ * This function registers specified memory entry in @rproc carveouts list.
+ * Specified carveout should have been allocated before registering.
+ */
+void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry *mem)
+{
+	list_add_tail(&mem->node, &rproc->carveouts);
+}
+EXPORT_SYMBOL(rproc_add_carveout);
+
+/**
  * rproc_mem_entry_init() - allocate and initialize rproc_mem_entry struct
  * @dev: pointer on device struct
  * @va: virtual address
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 4bc961f..55f30fc 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -558,6 +558,8 @@  struct rproc *rproc_alloc(struct device *dev, const char *name,
 int rproc_del(struct rproc *rproc);
 void rproc_free(struct rproc *rproc);
 
+void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry *mem);
+
 struct rproc_mem_entry *
 rproc_mem_entry_init(struct device *dev,
 		     void *va, dma_addr_t dma, int len, u32 da,