linux-kernel - Re: [PATCH v5] vfio: platform: reset: Add Broadcom FlexRM reset module

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Date:   Tue, 22 Aug 2017 11:47:52 -0700
From:   Scott Branden <scott.branden@...adcom.com>
To:     Anup Patel <anup.patel@...adcom.com>,
        Will Deacon <will.deacon@....com>,
        Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        Baptiste Reynal <b.reynal@...tualopensystems.com>,
        Alex Williamson <alex.williamson@...hat.com>
Cc:     Scott Branden <sbranden@...adcom.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, kvm@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com
Subject: Re: [PATCH v5] vfio: platform: reset: Add Broadcom FlexRM reset
 module

Hi Anup,

We should add default (as below).


On 17-08-22 03:00 AM, Anup Patel wrote:
> This patch adds Broadcom FlexRM low-level reset for
> VFIO platform.
>
> It will do the following:
> 1. Disable/Deactivate each FlexRM ring
> 2. Flush each FlexRM ring
>
> The cleanup sequence for FlexRM rings is adapted from
> Broadcom FlexRM mailbox driver.
>
> Signed-off-by: Anup Patel <anup.patel@...adcom.com>
> Reviewed-by: Oza Oza <oza.oza@...adcom.com>
> Reviewed-by: Scott Branden <scott.branden@...adcom.com>
> Reviewed-by: Eric Auger <eric.auger@...hat.com>
> ---
>   drivers/vfio/platform/reset/Kconfig                |   8 ++
>   drivers/vfio/platform/reset/Makefile               |   1 +
>   .../vfio/platform/reset/vfio_platform_bcmflexrm.c  | 100 +++++++++++++++++++++
>   3 files changed, 109 insertions(+)
>   create mode 100644 drivers/vfio/platform/reset/vfio_platform_bcmflexrm.c
>
> diff --git a/drivers/vfio/platform/reset/Kconfig b/drivers/vfio/platform/reset/Kconfig
> index 70cccc5..8833805 100644
> --- a/drivers/vfio/platform/reset/Kconfig
> +++ b/drivers/vfio/platform/reset/Kconfig
> @@ -13,3 +13,11 @@ config VFIO_PLATFORM_AMDXGBE_RESET
>   	  Enables the VFIO platform driver to handle reset for AMD XGBE
>   
>   	  If you don't know what to do here, say N.
> +
> +config VFIO_PLATFORM_BCMFLEXRM_RESET
> +	tristate "VFIO support for Broadcom FlexRM reset"
> +	depends on VFIO_PLATFORM && (ARCH_BCM_IPROC || COMPILE_TEST)
default ARCH_BCM_IPROC
> +	help
> +	  Enables the VFIO platform driver to handle reset for Broadcom FlexRM
> +
> +	  If you don't know what to do here, say N.
>