linux-kernel - Re: [PATCH v8 5/6] iommu/arm-smmu-v3: Add in-kernel support for NVIDIA Tegra241 (Grace) CMDQV

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Message-ID: <20240612122925.GA19897@nvidia.com>
Date: Wed, 12 Jun 2024 09:29:25 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Nicolin Chen <nicolinc@...dia.com>
Cc: will@...nel.org, robin.murphy@....com, joro@...tes.org,
	thierry.reding@...il.com, vdumpa@...dia.com, jonathanh@...dia.com,
	linux-kernel@...r.kernel.org, iommu@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org
Subject: Re: [PATCH v8 5/6] iommu/arm-smmu-v3: Add in-kernel support for
 NVIDIA Tegra241 (Grace) CMDQV

On Tue, May 28, 2024 at 01:09:53AM -0700, Nicolin Chen wrote:

> +/* MMIO helpers */
> +#define REG_CMDQV(_cmdqv, _regname) \
> +	((_cmdqv)->base + TEGRA241_CMDQV_##_regname)
> +#define REG_VINTF(_vintf, _regname) \
> +	((_vintf)->base + TEGRA241_VINTF_##_regname)
> +#define REG_VCMDQ_PAGE0(_vcmdq, _regname) \
> +	((_vcmdq)->page0 + TEGRA241_VCMDQ_##_regname)
> +#define REG_VCMDQ_PAGE1(_vcmdq, _regname) \
> +	((_vcmdq)->page1 + TEGRA241_VCMDQ_##_regname)

This looks OK now

I didn't see any thing else really important in this patch

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

> +static inline int cmdqv_write_config(struct tegra241_cmdqv *cmdqv, u32 regval)
> +{
> +	return tegra241_cmdqv_write_config(cmdqv,
> +					   cmdqv->base + TEGRA241_CMDQV_CONFIG,
> +					   cmdqv->base + TEGRA241_CMDQV_STATUS,
> +					   regval, "CMDQV: ", NULL);

However it would be good to go and fix these case to use the REG_xx
macros, I noticed several.

Jason