[U-Boot] [PATCH v2 02/26] remoteproc: ops: Add elf section size as input parameter to device_to_virt api

[Fabien DESSENNE <fabien.dessenne@st.com>]

Hi Lokesh


I have successfully tested this patch for stm32_copro.

BR

Fabien



On 04/09/2019 12:31 PM, Lokesh Vutla wrote:
> Introduce a new parameter "size" that accepts size of the region to
> remoteproc ops callback device_to_virt(). This can enforce more checks
> on the region that device_to_virt() is dealing with.
>
> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

Tested-by: Fabien Dessenne <fabien.dessenne@st.com>

Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com>

> ---
>   drivers/remoteproc/rproc-elf-loader.c |  3 ++-
>   drivers/remoteproc/sandbox_testproc.c |  4 +++-
>   drivers/remoteproc/stm32_copro.c      | 12 ++++++++++--
>   include/remoteproc.h                  |  3 ++-
>   4 files changed, 17 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/remoteproc/rproc-elf-loader.c b/drivers/remoteproc/rproc-elf-loader.c
> index 67937a7595..7574ba3fb3 100644
> --- a/drivers/remoteproc/rproc-elf-loader.c
> +++ b/drivers/remoteproc/rproc-elf-loader.c
> @@ -86,7 +86,8 @@ int rproc_elf32_load_image(struct udevice *dev, unsigned long addr)
>   			continue;
>   
>   		if (ops->device_to_virt)
> -			dst = ops->device_to_virt(dev, (ulong)dst);
> +			dst = ops->device_to_virt(dev, (ulong)dst,
> +						  phdr->p_memsz);
>   
>   		dev_dbg(dev, "Loading phdr %i to 0x%p (%i bytes)\n",
>   			i, dst, phdr->p_filesz);
> diff --git a/drivers/remoteproc/sandbox_testproc.c b/drivers/remoteproc/sandbox_testproc.c
> index 5f35119ab7..eeee49c4dd 100644
> --- a/drivers/remoteproc/sandbox_testproc.c
> +++ b/drivers/remoteproc/sandbox_testproc.c
> @@ -306,9 +306,11 @@ static int sandbox_testproc_ping(struct udevice *dev)
>    * sandbox_testproc_device_to_virt() - Convert device address to virtual address
>    * @dev:	device to operate upon
>    * @da:		device address
> + * @size:	Size of the memory region @da is pointing to
>    * @return converted virtual address
>    */
> -static void *sandbox_testproc_device_to_virt(struct udevice *dev, ulong da)
> +static void *sandbox_testproc_device_to_virt(struct udevice *dev, ulong da,
> +					     ulong size)
>   {
>   	u64 paddr;
>   
> diff --git a/drivers/remoteproc/stm32_copro.c b/drivers/remoteproc/stm32_copro.c
> index ad941f67e8..71895daf9c 100644
> --- a/drivers/remoteproc/stm32_copro.c
> +++ b/drivers/remoteproc/stm32_copro.c
> @@ -107,11 +107,13 @@ static int stm32_copro_set_hold_boot(struct udevice *dev, bool hold)
>    * stm32_copro_device_to_virt() - Convert device address to virtual address
>    * @dev:	corresponding STM32 remote processor device
>    * @da:		device address
> + * @size:	Size of the memory region @da is pointing to
>    * @return converted virtual address
>    */
> -static void *stm32_copro_device_to_virt(struct udevice *dev, ulong da)
> +static void *stm32_copro_device_to_virt(struct udevice *dev, ulong da,
> +					ulong size)
>   {
> -	fdt32_t in_addr = cpu_to_be32(da);
> +	fdt32_t in_addr = cpu_to_be32(da), end_addr;
>   	u64 paddr;
>   
>   	paddr = dev_translate_dma_address(dev, &in_addr);
> @@ -120,6 +122,12 @@ static void *stm32_copro_device_to_virt(struct udevice *dev, ulong da)
>   		return NULL;
>   	}
>   
> +	end_addr = cpu_to_be32(da + size - 1);
> +	if (dev_translate_dma_address(dev, &end_addr) == OF_BAD_ADDR) {
> +		dev_err(dev, "Unable to convert address %ld\n", da + size - 1);
> +		return NULL;
> +	}
> +
>   	return phys_to_virt(paddr);
>   }
>   
> diff --git a/include/remoteproc.h b/include/remoteproc.h
> index 4987194905..dbff1ce3cf 100644
> --- a/include/remoteproc.h
> +++ b/include/remoteproc.h
> @@ -122,9 +122,10 @@ struct dm_rproc_ops {
>   	 *
>   	 * @dev:	Remote proc device
>   	 * @da:		Device address
> +	 * @size:	Size of the memory region @da is pointing to
>   	 * @return virtual address.
>   	 */
> -	void * (*device_to_virt)(struct udevice *dev, ulong da);
> +	void * (*device_to_virt)(struct udevice *dev, ulong da, ulong size);
>   };
>   
>   /* Accessor */