> Subject: Re: [PATCH 3/3] edac: sifive: Add EDAC support for Memory Controller in SiFive SoCs
Fix subject prefix: "EDAC/sifive: ..."
On Tue, Aug 25, 2020 at 05:36:22PM +0530, Yash Shah wrote:
> Add Memory controller EDAC support in exisiting SiFive platform EDAC
s/in exisiting/to the/
> driver. It registers for notifier events from the SiFive DDR controller
> driver for DDR ECC events.
Simplify:
"It registers for ECC notifier events from the memory controller."
> Signed-off-by: Yash Shah <yash.shah@xxxxxxxxxx>
> ---
> drivers/edac/Kconfig | 2 +-
> drivers/edac/sifive_edac.c | 117 +++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 118 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
> index 7b6ec30..f8b3b53 100644
> --- a/drivers/edac/Kconfig
> +++ b/drivers/edac/Kconfig
> @@ -462,7 +462,7 @@ config EDAC_ALTERA_SDMMC
>
> config EDAC_SIFIVE
> bool "Sifive platform EDAC driver"
> - depends on EDAC=y && SIFIVE_L2
> + depends on EDAC=y && (SIFIVE_L2 || SIFIVE_DDR)
> help
> Support for error detection and correction on the SiFive SoCs.
>
> diff --git a/drivers/edac/sifive_edac.c b/drivers/edac/sifive_edac.c
> index 3a3dcb1..cf032685 100644
> --- a/drivers/edac/sifive_edac.c
> +++ b/drivers/edac/sifive_edac.c
> @@ -11,14 +11,120 @@
> #include <linux/platform_device.h>
> #include "edac_module.h"
> #include <soc/sifive/sifive_l2_cache.h>
> +#include <soc/sifive/sifive_ddr.h>
>
> #define DRVNAME "sifive_edac"
> +#define SIFIVE_EDAC_MOD_NAME "Sifive ECC Manager"
s/SIFIVE_EDAC_MOD_NAME/EDAC_MOD_NAME/g
like the other EDAC drivers.
...
> +static int ecc_mc_register(struct platform_device *pdev)
> +{
> + struct sifive_edac_mc_priv *p;
> + struct edac_mc_layer layers[1];
> + int ret;
> +
> + p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
> + if (!p)
> + return -ENOMEM;
> +
> + p->notifier.notifier_call = ecc_mc_err_event;
> + platform_set_drvdata(pdev, p);
> +
> + layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
> + layers[0].size = 1;
> + layers[0].is_virt_csrow = true;
> +
> + p->mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, 0);
> + if (!p->mci) {
> + dev_err(&pdev->dev, "Failed mem allocation for mc instance\n");
> + return -ENOMEM;
> + }
> +
> + p->mci->pdev = &pdev->dev;
> + /* Initialize controller capabilities */
> + p->mci->mtype_cap = MEM_FLAG_DDR4;
> + p->mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
> + p->mci->edac_cap = EDAC_FLAG_SECDED;
> + p->mci->scrub_cap = SCRUB_UNKNOWN;
> + p->mci->scrub_mode = SCRUB_HW_PROG;
> + p->mci->ctl_name = dev_name(&pdev->dev);
> + p->mci->dev_name = dev_name(&pdev->dev);
> + p->mci->mod_name = SIFIVE_EDAC_MOD_NAME;
> + p->mci->ctl_page_to_phys = NULL;
> +
> + /* Interrupt feature is supported by cadence mc */
> + edac_op_state = EDAC_OPSTATE_INT;
> +
> + ret = edac_mc_add_mc(p->mci);
> + if (ret) {
> + edac_printk(KERN_ERR, SIFIVE_EDAC_MOD_NAME,
> + "Failed to register with EDAC core\n");
> + goto err;
> + }
> +
> +#ifdef CONFIG_SIFIVE_DDR
It seems all that ifdeffery can be replaced with
if (IS_ENABLED(CONFIG_...))
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
