netdev - Re: [PATCH v2 2/5] ravb: Separate handling of irq enable/disable regs into feature

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Message-ID: <d500a003-f5bb-b7cb-2ad4-bfe0d4f8c87c@omp.ru>
Date:   Mon, 9 May 2022 22:56:12 +0300
From:   Sergey Shtylyov <s.shtylyov@....ru>
To:     Phil Edworthy <phil.edworthy@...esas.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
CC:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Biju Das <biju.das.jz@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        <netdev@...r.kernel.org>, <linux-renesas-soc@...r.kernel.org>
Subject: Re: [PATCH v2 2/5] ravb: Separate handling of irq enable/disable regs
 into feature

Hello!

On 5/9/22 5:24 PM, Phil Edworthy wrote:

> Currently, when the HW has a single interrupt, the driver uses the
> GIC, TIC, RIC0 registers to enable and disable interrupts.
> When the HW has multiple interrupts, it uses the GIE, GID, TIE, TID,
> RIE0, RID0 registers.
> 
> However, other devices, e.g. RZ/V2M, have multiple irqs and only have
> the GIC, TIC, RIC0 registers.
> Therefore, split this into a separate feature.
> 
> Signed-off-by: Phil Edworthy <phil.edworthy@...esas.com>
> Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
> ---
> v2:
>  - Renamed irq_en_dis_regs to irq_en_dis
>  - Squashed use of GIC reg versus GIE/GID into this patch and got rid
>    of separate gptp_ptm_gic feature.
>  - Minor editing of the commit msg
> ---
>  drivers/net/ethernet/renesas/ravb.h      | 1 +
>  drivers/net/ethernet/renesas/ravb_main.c | 5 +++--
>  drivers/net/ethernet/renesas/ravb_ptp.c  | 4 ++--
>  3 files changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
> index 08062d73df10..0ec8256f7eef 100644
> --- a/drivers/net/ethernet/renesas/ravb.h
> +++ b/drivers/net/ethernet/renesas/ravb.h
> @@ -1027,6 +1027,7 @@ struct ravb_hw_info {
>  	unsigned tx_counters:1;		/* E-MAC has TX counters */
>  	unsigned carrier_counters:1;	/* E-MAC has carrier counters */
>  	unsigned multi_irqs:1;		/* AVB-DMAC and E-MAC has multiple irqs */
> +	unsigned irq_en_dis_regs:1;	/* Has separate irq enable and disable regs */

   You forgot to actually rename it. ;-)

>  	unsigned gptp:1;		/* AVB-DMAC has gPTP support */
>  	unsigned ccc_gac:1;		/* AVB-DMAC has gPTP support active in config mode */
>  	unsigned nc_queues:1;		/* AVB-DMAC has RX and TX NC queues */
[...]
> diff --git a/drivers/net/ethernet/renesas/ravb_ptp.c b/drivers/net/ethernet/renesas/ravb_ptp.c
> index c099656dd75b..a7726c2ed594 100644
> --- a/drivers/net/ethernet/renesas/ravb_ptp.c
> +++ b/drivers/net/ethernet/renesas/ravb_ptp.c

    I think you missed the check in ravb_ptp_extts()...

[...]

MBR, Sergey