diff mbox series

[09/11] remoteproc: stm32: Introduce new parse fw ops for synchronisation

Message ID 20200324220329.15523-10-mathieu.poirier@linaro.org (mailing list archive)
State New, archived
Headers show
Series remoteproc: stm32: Add support for synchronisation with MCU | expand

Commit Message

Mathieu Poirier March 24, 2020, 10:03 p.m. UTC 
Introduce new parse firmware rproc_ops functions to be used when
synchonising with an MCU.

Mainly based on the work published by Arnaud Pouliquen [1].

[1]. https://patchwork.kernel.org/project/linux-remoteproc/list/?series=239877

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
---
 drivers/remoteproc/stm32_rproc.c | 49 +++++++++++++++++++++++++++++++-
 1 file changed, 48 insertions(+), 1 deletion(-)

Comments

Loic PALLARDY March 27, 2020, 5:05 p.m. UTC | #1 
> -----Original Message-----
> From: Mathieu Poirier <mathieu.poirier@linaro.org>
> Sent: mardi 24 mars 2020 23:03
> To: bjorn.andersson@linaro.org
> Cc: ohad@wizery.com; Loic PALLARDY <loic.pallardy@st.com>; s-
> anna@ti.com; peng.fan@nxp.com; Arnaud POULIQUEN
> <arnaud.pouliquen@st.com>; Fabien DESSENNE
> <fabien.dessenne@st.com>; linux-remoteproc@vger.kernel.org
> Subject: [PATCH 09/11] remoteproc: stm32: Introduce new parse fw ops for
> synchronisation
> 
> Introduce new parse firmware rproc_ops functions to be used when
> synchonising with an MCU.
> 
> Mainly based on the work published by Arnaud Pouliquen [1].
> 
> [1]. https://patchwork.kernel.org/project/linux-
> remoteproc/list/?series=239877
> 
> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Thanks Mathieu
 
Reviewed-by: Loic Pallardy <loic.pallardy@st.com>
> ---
>  drivers/remoteproc/stm32_rproc.c | 49
> +++++++++++++++++++++++++++++++-
>  1 file changed, 48 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/remoteproc/stm32_rproc.c
> b/drivers/remoteproc/stm32_rproc.c
> index 734605a9223e..4268d71f191d 100644
> --- a/drivers/remoteproc/stm32_rproc.c
> +++ b/drivers/remoteproc/stm32_rproc.c
> @@ -215,7 +215,34 @@ static int stm32_rproc_elf_load_rsc_table(struct
> rproc *rproc,
>  	return 0;
>  }
> 
> -static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware
> *fw)
> +static int stm32_rproc_sync_elf_load_rsc_table(struct rproc *rproc,
> +					       const struct firmware *fw)
> +{
> +	struct resource_table *table = NULL;
> +	struct stm32_rproc *ddata = rproc->priv;
> +
> +	if (ddata->rsc_va) {
> +		table = (struct resource_table *)ddata->rsc_va;
> +		/* Assuming that the resource table fits in 1kB is fair */
> +		rproc->cached_table = kmemdup(table, RSC_TBL_SIZE,
> GFP_KERNEL);
> +		if (!rproc->cached_table)
> +			return -ENOMEM;
> +
> +		rproc->table_ptr = rproc->cached_table;
> +		rproc->table_sz = RSC_TBL_SIZE;
> +		return 0;
> +	}
> +
> +	rproc->cached_table = NULL;
> +	rproc->table_ptr = NULL;
> +	rproc->table_sz = 0;
> +
> +	dev_warn(&rproc->dev, "no resource table found for this
> firmware\n");
> +	return 0;
> +}
> +
> +static int stm32_rproc_parse_memory_regions(struct rproc *rproc,
> +					    const struct firmware *fw)
>  {
>  	struct device *dev = rproc->dev.parent;
>  	struct device_node *np = dev->of_node;
> @@ -268,9 +295,28 @@ static int stm32_rproc_parse_fw(struct rproc *rproc,
> const struct firmware *fw)
>  		index++;
>  	}
> 
> +	return 0;
> +}
> +
> +static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware
> *fw)
> +{
> +	int ret = stm32_rproc_parse_memory_regions(rproc, fw);
> +	if (ret)
> +		return ret;
> +
>  	return stm32_rproc_elf_load_rsc_table(rproc, fw);
>  }
> 
> +static int stm32_rproc_sync_parse_fw(struct rproc *rproc,
> +				     const struct firmware *fw)
> +{
> +	int ret = stm32_rproc_parse_memory_regions(rproc, fw);
> +	if (ret)
> +		return ret;
> +
> +	return stm32_rproc_sync_elf_load_rsc_table(rproc, fw);
> +}
> +
>  static irqreturn_t stm32_rproc_wdg(int irq, void *data)
>  {
>  	struct platform_device *pdev = data;
> @@ -557,6 +603,7 @@ static __maybe_unused struct rproc_ops
> st_rproc_sync_ops = {
>  	.start		= stm32_rproc_sync_start,
>  	.stop		= stm32_rproc_sync_stop,
>  	.kick		= stm32_rproc_kick,
> +	.parse_fw	= stm32_rproc_sync_parse_fw,
>  };
> 
>  static const struct of_device_id stm32_rproc_match[] = {
> --
> 2.20.1
diff mbox series

Patch

diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index 734605a9223e..4268d71f191d 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -215,7 +215,34 @@  static int stm32_rproc_elf_load_rsc_table(struct rproc *rproc,
 	return 0;
 }
 
-static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
+static int stm32_rproc_sync_elf_load_rsc_table(struct rproc *rproc,
+					       const struct firmware *fw)
+{
+	struct resource_table *table = NULL;
+	struct stm32_rproc *ddata = rproc->priv;
+
+	if (ddata->rsc_va) {
+		table = (struct resource_table *)ddata->rsc_va;
+		/* Assuming that the resource table fits in 1kB is fair */
+		rproc->cached_table = kmemdup(table, RSC_TBL_SIZE, GFP_KERNEL);
+		if (!rproc->cached_table)
+			return -ENOMEM;
+
+		rproc->table_ptr = rproc->cached_table;
+		rproc->table_sz = RSC_TBL_SIZE;
+		return 0;
+	}
+
+	rproc->cached_table = NULL;
+	rproc->table_ptr = NULL;
+	rproc->table_sz = 0;
+
+	dev_warn(&rproc->dev, "no resource table found for this firmware\n");
+	return 0;
+}
+
+static int stm32_rproc_parse_memory_regions(struct rproc *rproc,
+					    const struct firmware *fw)
 {
 	struct device *dev = rproc->dev.parent;
 	struct device_node *np = dev->of_node;
@@ -268,9 +295,28 @@  static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
 		index++;
 	}
 
+	return 0;
+}
+
+static int stm32_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
+{
+	int ret = stm32_rproc_parse_memory_regions(rproc, fw);
+	if (ret)
+		return ret;
+
 	return stm32_rproc_elf_load_rsc_table(rproc, fw);
 }
 
+static int stm32_rproc_sync_parse_fw(struct rproc *rproc,
+				     const struct firmware *fw)
+{
+	int ret = stm32_rproc_parse_memory_regions(rproc, fw);
+	if (ret)
+		return ret;
+
+	return stm32_rproc_sync_elf_load_rsc_table(rproc, fw);
+}
+
 static irqreturn_t stm32_rproc_wdg(int irq, void *data)
 {
 	struct platform_device *pdev = data;
@@ -557,6 +603,7 @@  static __maybe_unused struct rproc_ops st_rproc_sync_ops = {
 	.start		= stm32_rproc_sync_start,
 	.stop		= stm32_rproc_sync_stop,
 	.kick		= stm32_rproc_kick,
+	.parse_fw	= stm32_rproc_sync_parse_fw,
 };
 
 static const struct of_device_id stm32_rproc_match[] = {