diff mbox series

[V2,5/7] remoteproc: imx_rproc: add i.MX specific parse fw hook

Message ID 20200927064131.24101-6-peng.fan@nxp.com
State New
Headers show
Series remoteproc: imx_rproc: support iMX8MQ/M | expand

Commit Message

Peng Fan Sept. 27, 2020, 6:41 a.m. UTC
The hook is used to parse memory-regions and load resource table
from the address the remote processor published.

Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 drivers/remoteproc/imx_rproc.c | 97 ++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)

Comments

Mathieu Poirier Oct. 19, 2020, 5:48 p.m. UTC | #1
On Sun, Sep 27, 2020 at 02:41:29PM +0800, Peng Fan wrote:
> The hook is used to parse memory-regions and load resource table
> from the address the remote processor published.
> 
> Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com>
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
>  drivers/remoteproc/imx_rproc.c | 97 ++++++++++++++++++++++++++++++++++
>  1 file changed, 97 insertions(+)
> 
> diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
> index 48ce09e857ee..bd3a42892b22 100644
> --- a/drivers/remoteproc/imx_rproc.c
> +++ b/drivers/remoteproc/imx_rproc.c
> @@ -11,6 +11,7 @@
>  #include <linux/mfd/syscon.h>
>  #include <linux/module.h>
>  #include <linux/of_address.h>
> +#include <linux/of_reserved_mem.h>
>  #include <linux/of_device.h>
>  #include <linux/platform_device.h>
>  #include <linux/regmap.h>
> @@ -243,10 +244,106 @@ static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
>  	return va;
>  }
>  
> +static int imx_rproc_mem_alloc(struct rproc *rproc,
> +			       struct rproc_mem_entry *mem)
> +{
> +	struct device *dev = rproc->dev.parent;
> +	void *va;
> +
> +	dev_dbg(dev, "map memory: %p+%zx\n", &mem->dma, mem->len);
> +	va = ioremap_wc(mem->dma, mem->len);
> +	if (IS_ERR_OR_NULL(va)) {
> +		dev_err(dev, "Unable to map memory region: %p+%zx\n",
> +			&mem->dma, mem->len);
> +		return -ENOMEM;
> +	}
> +
> +	/* Update memory entry va */
> +	mem->va = va;
> +
> +	return 0;
> +}
> +
> +static int imx_rproc_mem_release(struct rproc *rproc,
> +				 struct rproc_mem_entry *mem)
> +{
> +	dev_dbg(rproc->dev.parent, "unmap memory: %pa\n", &mem->dma);
> +	iounmap(mem->va);
> +
> +	return 0;
> +}
> +
> +static int imx_rproc_parse_memory_regions(struct rproc *rproc)
> +{
> +	struct imx_rproc *priv = rproc->priv;
> +	struct device_node *np = priv->dev->of_node;
> +	struct of_phandle_iterator it;
> +	struct rproc_mem_entry *mem;
> +	struct reserved_mem *rmem;
> +	int index = 0;
> +	u32 da;
> +
> +	/* Register associated reserved memory regions */
> +	of_phandle_iterator_init(&it, np, "memory-region", NULL, 0);
> +	while (of_phandle_iterator_next(&it) == 0) {
> +		/*
> +		 * Ignore the first memory region which will be used vdev buffer.
> +		 * No need to do extra handlings, rproc_add_virtio_dev will handle it.
> +		 */
> +		if (!index && !strcmp(it.node->name, "vdevbuffer")) {
> +			index ++;

How many vdevs is there in your scenario?  Since most of this code is taken from
stm32 anyway I would suggest to use "vdev0buffer" and get rid of the "index ++".  It
adds needless complexity and doesn't pass the checkpatch test.

With the above:
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>

> +			continue;
> +		}
> +
> +		rmem = of_reserved_mem_lookup(it.node);
> +		if (!rmem) {
> +			dev_err(priv->dev, "unable to acquire memory-region\n");
> +			return -EINVAL;
> +		}
> +
> +		/* No need to translate pa to da, i.MX use same map */
> +		da = rmem->base;
> +
> +		/* Register memory region */
> +		mem = rproc_mem_entry_init(priv->dev, NULL, (dma_addr_t)rmem->base, rmem->size, da,
> +					   imx_rproc_mem_alloc, imx_rproc_mem_release,
> +					   it.node->name);
> +
> +		if (mem)
> +			rproc_coredump_add_segment(rproc, da, rmem->size);
> +		else
> +			return -ENOMEM;
> +
> +		rproc_add_carveout(rproc, mem);
> +		index++;
> +	}
> +
> +	return  0;
> +}
> +
> +static int imx_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
> +{
> +	int ret = imx_rproc_parse_memory_regions(rproc);
> +
> +	if (ret)
> +		return ret;
> +
> +	ret = rproc_elf_load_rsc_table(rproc, fw);
> +	if (ret)
> +		dev_info(&rproc->dev, "No resource table in elf\n");
> +
> +	return 0;
> +}
> +
>  static const struct rproc_ops imx_rproc_ops = {
>  	.start		= imx_rproc_start,
>  	.stop		= imx_rproc_stop,
>  	.da_to_va       = imx_rproc_da_to_va,
> +	.load		= rproc_elf_load_segments,
> +	.parse_fw	= imx_rproc_parse_fw,
> +	.find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table,
> +	.sanity_check	= rproc_elf_sanity_check,
> +	.get_boot_addr	= rproc_elf_get_boot_addr,
>  };
>  
>  static int imx_rproc_addr_init(struct imx_rproc *priv,
> -- 
> 2.28.0
>
diff mbox series

Patch

diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index 48ce09e857ee..bd3a42892b22 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -11,6 +11,7 @@ 
 #include <linux/mfd/syscon.h>
 #include <linux/module.h>
 #include <linux/of_address.h>
+#include <linux/of_reserved_mem.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
@@ -243,10 +244,106 @@  static void *imx_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len)
 	return va;
 }
 
+static int imx_rproc_mem_alloc(struct rproc *rproc,
+			       struct rproc_mem_entry *mem)
+{
+	struct device *dev = rproc->dev.parent;
+	void *va;
+
+	dev_dbg(dev, "map memory: %p+%zx\n", &mem->dma, mem->len);
+	va = ioremap_wc(mem->dma, mem->len);
+	if (IS_ERR_OR_NULL(va)) {
+		dev_err(dev, "Unable to map memory region: %p+%zx\n",
+			&mem->dma, mem->len);
+		return -ENOMEM;
+	}
+
+	/* Update memory entry va */
+	mem->va = va;
+
+	return 0;
+}
+
+static int imx_rproc_mem_release(struct rproc *rproc,
+				 struct rproc_mem_entry *mem)
+{
+	dev_dbg(rproc->dev.parent, "unmap memory: %pa\n", &mem->dma);
+	iounmap(mem->va);
+
+	return 0;
+}
+
+static int imx_rproc_parse_memory_regions(struct rproc *rproc)
+{
+	struct imx_rproc *priv = rproc->priv;
+	struct device_node *np = priv->dev->of_node;
+	struct of_phandle_iterator it;
+	struct rproc_mem_entry *mem;
+	struct reserved_mem *rmem;
+	int index = 0;
+	u32 da;
+
+	/* Register associated reserved memory regions */
+	of_phandle_iterator_init(&it, np, "memory-region", NULL, 0);
+	while (of_phandle_iterator_next(&it) == 0) {
+		/*
+		 * Ignore the first memory region which will be used vdev buffer.
+		 * No need to do extra handlings, rproc_add_virtio_dev will handle it.
+		 */
+		if (!index && !strcmp(it.node->name, "vdevbuffer")) {
+			index ++;
+			continue;
+		}
+
+		rmem = of_reserved_mem_lookup(it.node);
+		if (!rmem) {
+			dev_err(priv->dev, "unable to acquire memory-region\n");
+			return -EINVAL;
+		}
+
+		/* No need to translate pa to da, i.MX use same map */
+		da = rmem->base;
+
+		/* Register memory region */
+		mem = rproc_mem_entry_init(priv->dev, NULL, (dma_addr_t)rmem->base, rmem->size, da,
+					   imx_rproc_mem_alloc, imx_rproc_mem_release,
+					   it.node->name);
+
+		if (mem)
+			rproc_coredump_add_segment(rproc, da, rmem->size);
+		else
+			return -ENOMEM;
+
+		rproc_add_carveout(rproc, mem);
+		index++;
+	}
+
+	return  0;
+}
+
+static int imx_rproc_parse_fw(struct rproc *rproc, const struct firmware *fw)
+{
+	int ret = imx_rproc_parse_memory_regions(rproc);
+
+	if (ret)
+		return ret;
+
+	ret = rproc_elf_load_rsc_table(rproc, fw);
+	if (ret)
+		dev_info(&rproc->dev, "No resource table in elf\n");
+
+	return 0;
+}
+
 static const struct rproc_ops imx_rproc_ops = {
 	.start		= imx_rproc_start,
 	.stop		= imx_rproc_stop,
 	.da_to_va       = imx_rproc_da_to_va,
+	.load		= rproc_elf_load_segments,
+	.parse_fw	= imx_rproc_parse_fw,
+	.find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table,
+	.sanity_check	= rproc_elf_sanity_check,
+	.get_boot_addr	= rproc_elf_get_boot_addr,
 };
 
 static int imx_rproc_addr_init(struct imx_rproc *priv,