linux-renesas-soc.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Joerg Roedel <joro@8bytes.org>,
	Magnus Damm <damm+renesas@opensource.se>,
	Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
	iommu@lists.linux-foundation.org,
	linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 5/7] iommu/ipmmu-vmsa: Move num_utlbs to SoC-specific features
Date: Wed, 20 Feb 2019 17:42:44 +0200	[thread overview]
Message-ID: <20190220154244.GJ3516@pendragon.ideasonboard.com> (raw)
In-Reply-To: <20190220150531.2462-6-geert+renesas@glider.be>

Hi Geert,

Thank you for the patch.

On Wed, Feb 20, 2019 at 04:05:29PM +0100, Geert Uytterhoeven wrote:
> The maximum number of micro-TLBs per IPMMU instance is not fixed, but
> depends on the SoC type.  Hence move it from struct ipmmu_vmsa_device to
> struct ipmmu_features, and set up the correct value for both R-Car Gen2
> and Gen3 SoCs.
> 
> Note that currently no code uses this value.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
>  drivers/iommu/ipmmu-vmsa.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
> index 4e3134a9a52f8d87..0a21e734466eb1bd 100644
> --- a/drivers/iommu/ipmmu-vmsa.c
> +++ b/drivers/iommu/ipmmu-vmsa.c
> @@ -42,6 +42,7 @@ struct ipmmu_features {
>  	bool use_ns_alias_offset;
>  	bool has_cache_leaf_nodes;
>  	unsigned int number_of_contexts;
> +	unsigned int num_utlbs;
>  	bool setup_imbuscr;
>  	bool twobit_imttbcr_sl0;
>  	bool reserved_context;
> @@ -53,7 +54,6 @@ struct ipmmu_vmsa_device {
>  	struct iommu_device iommu;
>  	struct ipmmu_vmsa_device *root;
>  	const struct ipmmu_features *features;
> -	unsigned int num_utlbs;
>  	unsigned int num_ctx;
>  	spinlock_t lock;			/* Protects ctx and domains[] */
>  	DECLARE_BITMAP(ctx, IPMMU_CTX_MAX);
> @@ -972,6 +972,7 @@ static const struct ipmmu_features ipmmu_features_default = {
>  	.use_ns_alias_offset = true,
>  	.has_cache_leaf_nodes = false,
>  	.number_of_contexts = 1, /* software only tested with one context */
> +	.num_utlbs = 32,
>  	.setup_imbuscr = true,
>  	.twobit_imttbcr_sl0 = false,
>  	.reserved_context = false,
> @@ -981,6 +982,7 @@ static const struct ipmmu_features ipmmu_features_rcar_gen3 = {
>  	.use_ns_alias_offset = false,
>  	.has_cache_leaf_nodes = true,
>  	.number_of_contexts = 8,
> +	.num_utlbs = 48,
>  	.setup_imbuscr = false,
>  	.twobit_imttbcr_sl0 = true,
>  	.reserved_context = true,
> @@ -1033,7 +1035,6 @@ static int ipmmu_probe(struct platform_device *pdev)
>  	}
>  
>  	mmu->dev = &pdev->dev;
> -	mmu->num_utlbs = 48;
>  	spin_lock_init(&mmu->lock);
>  	bitmap_zero(mmu->ctx, IPMMU_CTX_MAX);
>  	mmu->features = of_device_get_match_data(&pdev->dev);

-- 
Regards,

Laurent Pinchart

  reply	other threads:[~2019-02-20 15:42 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-20 15:05 [PATCH 0/7] iommu/ipmmu-vmsa: Suspend/resume support and assorted cleanups Geert Uytterhoeven
2019-02-20 15:05 ` [PATCH 1/7] iommu/ipmmu-vmsa: Link IOMMUs and devices in sysfs Geert Uytterhoeven
2019-02-20 15:25   ` Laurent Pinchart
2019-02-20 15:05 ` [PATCH 2/7] iommu/ipmmu-vmsa: Call ipmmu_ctx_write_root() instead of open coding Geert Uytterhoeven
2019-02-20 15:27   ` Laurent Pinchart
2019-02-20 15:05 ` [PATCH 3/7] iommu/ipmmu-vmsa: Prepare to handle 40-bit error addresses Geert Uytterhoeven
2019-02-20 15:30   ` Laurent Pinchart
2019-02-20 15:42     ` Geert Uytterhoeven
2019-02-20 15:05 ` [PATCH 4/7] iommu/ipmmu-vmsa: Make IPMMU_CTX_MAX unsigned Geert Uytterhoeven
2019-02-20 15:31   ` Laurent Pinchart
2019-02-20 15:05 ` [PATCH 5/7] iommu/ipmmu-vmsa: Move num_utlbs to SoC-specific features Geert Uytterhoeven
2019-02-20 15:42   ` Laurent Pinchart [this message]
2019-02-20 15:05 ` [PATCH 6/7] iommu/ipmmu-vmsa: Extract hardware context initialization Geert Uytterhoeven
2019-02-20 15:35   ` Laurent Pinchart
2019-02-20 15:43     ` Geert Uytterhoeven
2019-02-20 15:05 ` [PATCH 7/7] iommu/ipmmu-vmsa: Add suspend/resume support Geert Uytterhoeven
2019-02-20 15:42   ` Laurent Pinchart
2019-02-20 16:05     ` Geert Uytterhoeven
2019-02-20 16:11       ` Laurent Pinchart
2019-02-20 19:47         ` Geert Uytterhoeven
2019-02-22 14:29   ` Robin Murphy

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190220154244.GJ3516@pendragon.ideasonboard.com \
    --to=laurent.pinchart@ideasonboard.com \
    --cc=damm+renesas@opensource.se \
    --cc=geert+renesas@glider.be \
    --cc=iommu@lists.linux-foundation.org \
    --cc=joro@8bytes.org \
    --cc=laurent.pinchart+renesas@ideasonboard.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-renesas-soc@vger.kernel.org \
    --subject='Re: [PATCH 5/7] iommu/ipmmu-vmsa: Move num_utlbs to SoC-specific features' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
on how to clone and mirror all data and code used for this inbox