[PATCH v13 05/11] remoteproc: mediatek: Introduce cluster on single-core SCP
AngeloGioacchino Del Regno
angelogioacchino.delregno at collabora.com
Wed Jun 7 00:43:06 PDT 2023
Il 07/06/23 09:22, Tinghan Shen ha scritto:
> This is the preliminary step for probing multi-core SCP.
> The initialization procedure for remoteproc is similar for both
> single-core and multi-core architectures and is reusing to avoid
> redundant code.
>
> Rewrite the probing flow of single-core SCP to adapt with the 'cluster'
> concept needed by probing the multi-core SCP. The main differences
> are,
> - the SCP core object(s) is maintained at the cluster list instead of at
> the platofmr device driver data property.
s/platofmr/platform/g
> - save the cluster information at the platofmr device driver data property.
> - In order to keep the compatibility of exported SCP APIs which getting
> the SCP core object by SCP node phandle, move the SCP core object
> pointers to the platform device platform data property.
>
> The registers of config and l1tcm are shared for multi-core
> SCP. Reuse the mapped addresses for all cores.
>
> Signed-off-by: Tinghan Shen <tinghan.shen at mediatek.com>
> ---
> drivers/remoteproc/mtk_common.h | 2 +
> drivers/remoteproc/mtk_scp.c | 151 +++++++++++++++++++++++---------
> 2 files changed, 112 insertions(+), 41 deletions(-)
>
> diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h
> index c0905aec3b4b..56395e8664cb 100644
> --- a/drivers/remoteproc/mtk_common.h
> +++ b/drivers/remoteproc/mtk_common.h
> @@ -128,6 +128,8 @@ struct mtk_scp {
> size_t dram_size;
>
> struct rproc_subdev *rpmsg_subdev;
> +
> + struct list_head elem;
> };
>
> /**
> diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
> index d66822dad943..c8fc6b46f82b 100644
> --- a/drivers/remoteproc/mtk_scp.c
> +++ b/drivers/remoteproc/mtk_scp.c
> @@ -23,6 +23,14 @@
> #define MAX_CODE_SIZE 0x500000
> #define SECTION_NAME_IPI_BUFFER ".ipi_buffer"
>
> +struct mtk_scp_of_cluster {
> + void __iomem *reg_base;
> + void __iomem *l1tcm_base;
> + size_t l1tcm_size;
> + phys_addr_t l1tcm_phys;
> + struct list_head mtk_scp_list;
> +};
> +
> /**
> * scp_get() - get a reference to SCP.
> *
> @@ -51,7 +59,7 @@ struct mtk_scp *scp_get(struct platform_device *pdev)
> return NULL;
> }
>
> - return platform_get_drvdata(scp_pdev);
> + return *(struct mtk_scp **)dev_get_platdata(&scp_pdev->dev);
> }
> EXPORT_SYMBOL_GPL(scp_get);
>
> @@ -810,14 +818,14 @@ static void scp_unmap_memory_region(struct mtk_scp *scp)
> static int scp_register_ipi(struct platform_device *pdev, u32 id,
> ipi_handler_t handler, void *priv)
> {
> - struct mtk_scp *scp = platform_get_drvdata(pdev);
> + struct mtk_scp *scp = *(struct mtk_scp **)dev_get_platdata(&pdev->dev);
>
> return scp_ipi_register(scp, id, handler, priv);
> }
>
> static void scp_unregister_ipi(struct platform_device *pdev, u32 id)
> {
> - struct mtk_scp *scp = platform_get_drvdata(pdev);
> + struct mtk_scp *scp = *(struct mtk_scp **)dev_get_platdata(&pdev->dev);
>
> scp_ipi_unregister(scp, id);
> }
> @@ -825,7 +833,7 @@ static void scp_unregister_ipi(struct platform_device *pdev, u32 id)
> static int scp_send_ipi(struct platform_device *pdev, u32 id, void *buf,
> unsigned int len, unsigned int wait)
> {
> - struct mtk_scp *scp = platform_get_drvdata(pdev);
> + struct mtk_scp *scp = *(struct mtk_scp **)dev_get_platdata(&pdev->dev);
>
> return scp_ipi_send(scp, id, buf, len, wait);
> }
> @@ -855,7 +863,8 @@ static void scp_remove_rpmsg_subdev(struct mtk_scp *scp)
> }
> }
>
> -static int scp_probe(struct platform_device *pdev)
> +static struct mtk_scp *scp_rproc_init(struct platform_device *pdev,
> + struct mtk_scp_of_cluster *scp_cluster)
> {
> struct device *dev = &pdev->dev;
> struct device_node *np = dev->of_node;
> @@ -867,52 +876,42 @@ static int scp_probe(struct platform_device *pdev)
>
> ret = rproc_of_parse_firmware(dev, 0, &fw_name);
> if (ret < 0 && ret != -EINVAL)
> - return ret;
> + return ERR_PTR(ret);
>
> rproc = devm_rproc_alloc(dev, np->name, &scp_ops, fw_name, sizeof(*scp));
> - if (!rproc)
> - return dev_err_probe(dev, -ENOMEM, "unable to allocate remoteproc\n");
> + if (!rproc) {
> + dev_err(dev, "unable to allocate remoteproc\n");
> + return ERR_PTR(-ENOMEM);
Why are you converting those dev_err_probe to dev_err->return?!
Regards,
Angelo
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