On Fri, Mar 03, 2023 at 04:33:49PM +0800, Tinghan Shen wrote: > This is the preparation for probing multi-core SCP. The remoteproc > initialization flow is similar on cores and is reuesd to avoid > redundant code. > > 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@xxxxxxxxxxxx> > Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> > --- > drivers/remoteproc/mtk_scp.c | 62 ++++++++++++++++++++++++------------ > 1 file changed, 42 insertions(+), 20 deletions(-) > > diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c > index a3b9bc158cd9..bdb5d87eeaa3 100644 > --- a/drivers/remoteproc/mtk_scp.c > +++ b/drivers/remoteproc/mtk_scp.c > @@ -23,6 +23,13 @@ > #define MAX_CODE_SIZE 0x500000 > #define SECTION_NAME_IPI_BUFFER ".ipi_buffer" > > +struct mtk_scp_of_regs { > + void __iomem *reg_base; > + void __iomem *l1tcm_base; > + size_t l1tcm_size; > + phys_addr_t l1tcm_phys; > +}; > + > /** > * scp_get() - get a reference to SCP. > * > @@ -855,7 +862,8 @@ static void scp_remove_rpmsg_subdev(struct mtk_scp *scp) > } > } > > -static int scp_probe(struct platform_device *pdev) > +static int scp_rproc_init(struct platform_device *pdev, > + struct mtk_scp_of_regs *of_regs) > { > struct device *dev = &pdev->dev; > struct device_node *np = dev->of_node; > @@ -879,6 +887,11 @@ static int scp_probe(struct platform_device *pdev) > scp->data = of_device_get_match_data(dev); > platform_set_drvdata(pdev, scp); > > + scp->reg_base = of_regs->reg_base; > + scp->l1tcm_base = of_regs->l1tcm_base; > + scp->l1tcm_size = of_regs->l1tcm_size; > + scp->l1tcm_phys = of_regs->l1tcm_phys; > + > res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram"); > scp->sram_base = devm_ioremap_resource(dev, res); > if (IS_ERR(scp->sram_base)) > @@ -888,24 +901,6 @@ static int scp_probe(struct platform_device *pdev) > scp->sram_size = resource_size(res); > scp->sram_phys = res->start; > > - /* l1tcm is an optional memory region */ > - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm"); > - scp->l1tcm_base = devm_ioremap_resource(dev, res); > - if (IS_ERR(scp->l1tcm_base)) { > - ret = PTR_ERR(scp->l1tcm_base); > - if (ret != -EINVAL) { > - return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n"); > - } > - } else { > - scp->l1tcm_size = resource_size(res); > - scp->l1tcm_phys = res->start; > - } > - > - scp->reg_base = devm_platform_ioremap_resource_byname(pdev, "cfg"); > - if (IS_ERR(scp->reg_base)) > - return dev_err_probe(dev, PTR_ERR(scp->reg_base), > - "Failed to parse and map cfg memory\n"); > - > ret = scp->data->scp_clk_get(scp); > if (ret) > return ret; > @@ -933,7 +928,6 @@ static int scp_probe(struct platform_device *pdev) > ret = devm_request_threaded_irq(dev, platform_get_irq(pdev, 0), NULL, > scp_irq_handler, IRQF_ONESHOT, > pdev->name, scp); > - > if (ret) { > dev_err(dev, "failed to request irq\n"); > goto remove_subdev; > @@ -957,6 +951,34 @@ static int scp_probe(struct platform_device *pdev) > return ret; > } > > +static int scp_probe(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct resource *res; > + struct mtk_scp_of_regs scp_regs; > + int ret; > + struct device *dev = &pdev->dev; struct mtk_scp_of_regs scp_regs; struct resource *res; int ret; > + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg"); > + scp_regs.reg_base = devm_ioremap_resource(dev, res); > + if (IS_ERR(scp_regs.reg_base)) > + return dev_err_probe(dev, PTR_ERR(scp_regs.reg_base), > + "Failed to parse and map cfg memory\n"); > + > + /* l1tcm is an optional memory region */ > + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "l1tcm"); > + scp_regs.l1tcm_base = devm_ioremap_resource(dev, res); > + if (IS_ERR(scp_regs.l1tcm_base)) { > + ret = PTR_ERR(scp_regs.l1tcm_base); > + if (ret != -EINVAL) > + return dev_err_probe(dev, ret, "Failed to map l1tcm memory\n"); > + } else { > + scp_regs.l1tcm_size = resource_size(res); > + scp_regs.l1tcm_phys = res->start; > + } > + > + return scp_rproc_init(pdev, &scp_regs); > +} > + > static int scp_remove(struct platform_device *pdev) > { > struct mtk_scp *scp = platform_get_drvdata(pdev); > -- > 2.18.0 >