From: Chun-Kuang Hu <chunkuang.hu@kernel.org>
To: Neal Liu <neal.liu@mediatek.com>
Cc: Rob Herring <robh+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
devicetree@vger.kernel.org,
wsd_upstream <wsd_upstream@mediatek.com>,
lkml <linux-kernel@vger.kernel.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@lists.infradead.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v4 2/2] soc: mediatek: add mtk-devapc driver
Date: Sat, 1 Aug 2020 08:12:56 +0800 [thread overview]
Message-ID: <CAAOTY_8aw=6E7bMJwz5jDLXUxYHpy9_Avbwc90osQGckzANNcg@mail.gmail.com> (raw)
In-Reply-To: <1596010690-13178-3-git-send-email-neal.liu@mediatek.com>
Hi, Neal:
This patch is for "mediatek,mt6779-devapc", so I think commit title
should show the SoC ID.
Neal Liu <neal.liu@mediatek.com> 於 2020年7月29日 週三 下午4:29寫道:
>
> MediaTek bus fabric provides TrustZone security support and data
> protection to prevent slaves from being accessed by unexpected
> masters.
> The security violation is logged and sent to the processor for
> further analysis or countermeasures.
>
> Any occurrence of security violation would raise an interrupt, and
> it will be handled by mtk-devapc driver. The violation
> information is printed in order to find the murderer.
>
> Signed-off-by: Neal Liu <neal.liu@mediatek.com>
> ---
[snip]
> +
> +struct mtk_devapc_context {
> + struct device *dev;
> + u32 vio_idx_num;
> + void __iomem *devapc_pd_base;
> + struct mtk_devapc_vio_info *vio_info;
> + const struct mtk_devapc_pd_offset *offset;
> + const struct mtk_devapc_vio_dbgs *vio_dbgs;
> +};
I think this structure should separate the constant part. The constant part is:
struct mtk_devapc_data {
const u32 vio_idx_num;
const struct mtk_devapc_pd_offset *offset; /* I would like to
remove struct mtk_devapc_pd_offset and directly put its member into
this structure */
const struct mtk_devapc_vio_dbgs *vio_dbgs; /* This may disappear */
};
And the context is:
struct mtk_devapc_context {
struct device *dev;
void __iomem *devapc_pd_base;
const struct mtk_devapc_data *data;
};
So when you define this, you would not waste memory to store non-constant data.
static const struct mtk_devapc_data devapc_mt6779 = {
.vio_idx_num = 510,
.offset = &mt6779_pd_offset,
.vio_dbgs = &mt6779_vio_dbgs,
};
Regards,
Chun-Kuang.
> +
> +#endif /* __MTK_DEVAPC_H__ */
> --
> 1.7.9.5
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek
next prev parent reply other threads:[~2020-08-01 0:13 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-29 8:18 [PATCH v4] Add MediaTek MT6779 devapc driver Neal Liu
2020-07-29 8:18 ` [PATCH v4 1/2] dt-bindings: devapc: add bindings for mtk-devapc Neal Liu
2020-07-29 8:18 ` [PATCH v4 2/2] soc: mediatek: add mtk-devapc driver Neal Liu
2020-07-29 16:38 ` Chun-Kuang Hu
2020-07-31 2:44 ` Neal Liu
2020-07-31 15:03 ` Chun-Kuang Hu
2020-08-03 3:32 ` Neal Liu
2020-08-03 16:13 ` Chun-Kuang Hu
2020-08-04 2:18 ` Neal Liu
2020-08-04 15:27 ` Chun-Kuang Hu
2020-07-29 22:47 ` Chun-Kuang Hu
2020-07-31 2:47 ` Neal Liu
2020-07-30 16:14 ` Chun-Kuang Hu
2020-07-31 2:52 ` Neal Liu
2020-07-31 15:55 ` Chun-Kuang Hu
2020-08-03 3:41 ` Neal Liu
2020-08-01 0:12 ` Chun-Kuang Hu [this message]
2020-08-03 4:01 ` Neal Liu
2020-08-03 16:04 ` Chun-Kuang Hu
2020-08-04 2:08 ` Neal Liu
2020-08-04 15:55 ` Chun-Kuang Hu
2020-08-01 23:50 ` Chun-Kuang Hu
2020-08-03 4:05 ` Neal Liu
2020-08-03 15:38 ` Chun-Kuang Hu
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