diff mbox

[v3,03/13] remoteproc: add release ops in rproc_mem_entry struct

Message ID 1519921440-21356-4-git-send-email-loic.pallardy@st.com (mailing list archive)
State New, archived
Headers show

Commit Message

Loic PALLARDY March 1, 2018, 4:23 p.m. UTC
Memory entry could be allocated in different ways (ioremap,
dma_alloc_coherent, internal RAM allocator...).
This patch introduces a release ops in rproc_mem_entry structure
to associate dedicated release mechanism to each memory entry descriptor
in order to keep remoteproc core generic.

Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
---
 drivers/remoteproc/remoteproc_core.c | 23 +++++++++++++++++++++--
 include/linux/remoteproc.h           |  5 ++++-
 2 files changed, 25 insertions(+), 3 deletions(-)

Comments

Bjorn Andersson May 10, 2018, 12:53 a.m. UTC | #1
On Thu 01 Mar 08:23 PST 2018, Loic Pallardy wrote:

> Memory entry could be allocated in different ways (ioremap,
> dma_alloc_coherent, internal RAM allocator...).
> This patch introduces a release ops in rproc_mem_entry structure
> to associate dedicated release mechanism to each memory entry descriptor
> in order to keep remoteproc core generic.
> 
> Signed-off-by: Loic Pallardy <loic.pallardy@st.com>

Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>

Regards,
Bjorn

> ---
>  drivers/remoteproc/remoteproc_core.c | 23 +++++++++++++++++++++--
>  include/linux/remoteproc.h           |  5 ++++-
>  2 files changed, 25 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index eb1b779..5f11536 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -597,6 +597,24 @@ static int rproc_handle_devmem(struct rproc *rproc, struct fw_rsc_devmem *rsc,
>  }
>  
>  /**
> + * rproc_release_carveout() - release acquired carveout
> + * @rproc: rproc handle
> + * @mem: the memory entry to release
> + *
> + * This function releases specified memory entry @mem allocated via
> + * dma_alloc_coherent() function by @rproc.
> + */
> +static int rproc_release_carveout(struct rproc *rproc,
> +				  struct rproc_mem_entry *mem)
> +{
> +	struct device *dev = &rproc->dev;
> +
> +	/* clean up carveout allocations */
> +	dma_free_coherent(dev->parent, mem->len, mem->va, mem->dma);
> +	return 0;
> +}
> +
> +/**
>   * rproc_handle_carveout() - handle phys contig memory allocation requests
>   * @rproc: rproc handle
>   * @rsc: the resource entry
> @@ -730,6 +748,7 @@ static int rproc_handle_carveout(struct rproc *rproc,
>  	carveout->len = rsc->len;
>  	carveout->dma = dma;
>  	carveout->da = rsc->da;
> +	carveout->release = rproc_release_carveout;
>  
>  	list_add_tail(&carveout->node, &rproc->carveouts);
>  
> @@ -863,8 +882,8 @@ static void rproc_resource_cleanup(struct rproc *rproc)
>  
>  	/* clean up carveout allocations */
>  	list_for_each_entry_safe(entry, tmp, &rproc->carveouts, node) {
> -		dma_free_coherent(dev->parent, entry->len, entry->va,
> -				  entry->dma);
> +		if (entry->release)
> +			entry->release(rproc, entry);
>  		list_del(&entry->node);
>  		kfree(entry);
>  	}
> diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
> index 728d421..dedc138 100644
> --- a/include/linux/remoteproc.h
> +++ b/include/linux/remoteproc.h
> @@ -305,12 +305,15 @@ struct fw_rsc_vdev {
>  	struct fw_rsc_vdev_vring vring[0];
>  } __packed;
>  
> +struct rproc;
> +
>  /**
>   * struct rproc_mem_entry - memory entry descriptor
>   * @va:	virtual address
>   * @dma: dma address
>   * @len: length, in bytes
>   * @da: device address
> + * @release: release associated memory
>   * @priv: associated data
>   * @node: list node
>   */
> @@ -321,9 +324,9 @@ struct rproc_mem_entry {
>  	u32 da;
>  	void *priv;
>  	struct list_head node;
> +	int (*release)(struct rproc *rproc, struct rproc_mem_entry *mem);
>  };
>  
> -struct rproc;
>  struct firmware;
>  
>  /**
> -- 
> 1.9.1
> 
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diff mbox

Patch

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index eb1b779..5f11536 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -597,6 +597,24 @@  static int rproc_handle_devmem(struct rproc *rproc, struct fw_rsc_devmem *rsc,
 }
 
 /**
+ * rproc_release_carveout() - release acquired carveout
+ * @rproc: rproc handle
+ * @mem: the memory entry to release
+ *
+ * This function releases specified memory entry @mem allocated via
+ * dma_alloc_coherent() function by @rproc.
+ */
+static int rproc_release_carveout(struct rproc *rproc,
+				  struct rproc_mem_entry *mem)
+{
+	struct device *dev = &rproc->dev;
+
+	/* clean up carveout allocations */
+	dma_free_coherent(dev->parent, mem->len, mem->va, mem->dma);
+	return 0;
+}
+
+/**
  * rproc_handle_carveout() - handle phys contig memory allocation requests
  * @rproc: rproc handle
  * @rsc: the resource entry
@@ -730,6 +748,7 @@  static int rproc_handle_carveout(struct rproc *rproc,
 	carveout->len = rsc->len;
 	carveout->dma = dma;
 	carveout->da = rsc->da;
+	carveout->release = rproc_release_carveout;
 
 	list_add_tail(&carveout->node, &rproc->carveouts);
 
@@ -863,8 +882,8 @@  static void rproc_resource_cleanup(struct rproc *rproc)
 
 	/* clean up carveout allocations */
 	list_for_each_entry_safe(entry, tmp, &rproc->carveouts, node) {
-		dma_free_coherent(dev->parent, entry->len, entry->va,
-				  entry->dma);
+		if (entry->release)
+			entry->release(rproc, entry);
 		list_del(&entry->node);
 		kfree(entry);
 	}
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 728d421..dedc138 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -305,12 +305,15 @@  struct fw_rsc_vdev {
 	struct fw_rsc_vdev_vring vring[0];
 } __packed;
 
+struct rproc;
+
 /**
  * struct rproc_mem_entry - memory entry descriptor
  * @va:	virtual address
  * @dma: dma address
  * @len: length, in bytes
  * @da: device address
+ * @release: release associated memory
  * @priv: associated data
  * @node: list node
  */
@@ -321,9 +324,9 @@  struct rproc_mem_entry {
 	u32 da;
 	void *priv;
 	struct list_head node;
+	int (*release)(struct rproc *rproc, struct rproc_mem_entry *mem);
 };
 
-struct rproc;
 struct firmware;
 
 /**