linux-kernel - Re: [PATCH 02/11] Revert "staging: fsl-mc/dpio: remove couple of unused functions"

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Date:   Mon, 10 Sep 2018 15:10:28 -0500
From:   Li Yang <leoyang.li@....com>
To:     Horia Geanta <horia.geanta@....com>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        Stuart Yoder <stuyoder@...il.com>,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        Roy Pledge <roy.pledge@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        David Miller <davem@...emloft.net>, aymen.sghaier@....com,
        linux-crypto@...r.kernel.org,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 02/11] Revert "staging: fsl-mc/dpio: remove couple of
 unused functions"

On Mon, Sep 10, 2018 at 12:19 PM Horia Geantă <horia.geanta@....com> wrote:
>
> This reverts commit a211c8170b3c348353decb6e175c58a7814f218c.
> (+ updated to account for driver being moved out of staging)

So this is not a straightforward revert, as the original files have
been moved.  Probably it will be better not to use the standard format
of a revert commit which could cause confusion.

Otherwise,
Acked-by: Li Yang <leoyang.li@....com>

>
> dpseci object will make use of these functions, thus it's time to add
> them back.
>
> Signed-off-by: Horia Geantă <horia.geanta@....com>
> ---
>  drivers/soc/fsl/dpio/dpio-service.c | 58 +++++++++++++++++++++++++++++++++++++
>  include/soc/fsl/dpaa2-io.h          |  4 +++
>  2 files changed, 62 insertions(+)
>
> diff --git a/drivers/soc/fsl/dpio/dpio-service.c b/drivers/soc/fsl/dpio/dpio-service.c
> index 9b17f72349ed..321a92613a7e 100644
> --- a/drivers/soc/fsl/dpio/dpio-service.c
> +++ b/drivers/soc/fsl/dpio/dpio-service.c
> @@ -309,6 +309,37 @@ int dpaa2_io_service_rearm(struct dpaa2_io *d,
>  }
>  EXPORT_SYMBOL_GPL(dpaa2_io_service_rearm);
>
> +/**
> + * dpaa2_io_service_pull_fq() - pull dequeue functions from a fq.
> + * @d: the given DPIO service.
> + * @fqid: the given frame queue id.
> + * @s: the dpaa2_io_store object for the result.
> + *
> + * Return 0 for success, or error code for failure.
> + */
> +int dpaa2_io_service_pull_fq(struct dpaa2_io *d, u32 fqid,
> +                            struct dpaa2_io_store *s)
> +{
> +       struct qbman_pull_desc pd;
> +       int err;
> +
> +       qbman_pull_desc_clear(&pd);
> +       qbman_pull_desc_set_storage(&pd, s->vaddr, s->paddr, 1);
> +       qbman_pull_desc_set_numframes(&pd, (u8)s->max);
> +       qbman_pull_desc_set_fq(&pd, fqid);
> +
> +       d = service_select(d);
> +       if (!d)
> +               return -ENODEV;
> +       s->swp = d->swp;
> +       err = qbman_swp_pull(d->swp, &pd);
> +       if (err)
> +               s->swp = NULL;
> +
> +       return err;
> +}
> +EXPORT_SYMBOL(dpaa2_io_service_pull_fq);
> +
>  /**
>   * dpaa2_io_service_pull_channel() - pull dequeue functions from a channel.
>   * @d: the given DPIO service.
> @@ -341,6 +372,33 @@ int dpaa2_io_service_pull_channel(struct dpaa2_io *d, u32 channelid,
>  }
>  EXPORT_SYMBOL_GPL(dpaa2_io_service_pull_channel);
>
> +/**
> + * dpaa2_io_service_enqueue_fq() - Enqueue a frame to a frame queue.
> + * @d: the given DPIO service.
> + * @fqid: the given frame queue id.
> + * @fd: the frame descriptor which is enqueued.
> + *
> + * Return 0 for successful enqueue, -EBUSY if the enqueue ring is not ready,
> + * or -ENODEV if there is no dpio service.
> + */
> +int dpaa2_io_service_enqueue_fq(struct dpaa2_io *d,
> +                               u32 fqid,
> +                               const struct dpaa2_fd *fd)
> +{
> +       struct qbman_eq_desc ed;
> +
> +       d = service_select(d);
> +       if (!d)
> +               return -ENODEV;
> +
> +       qbman_eq_desc_clear(&ed);
> +       qbman_eq_desc_set_no_orp(&ed, 0);
> +       qbman_eq_desc_set_fq(&ed, fqid);
> +
> +       return qbman_swp_enqueue(d->swp, &ed, fd);
> +}
> +EXPORT_SYMBOL(dpaa2_io_service_enqueue_fq);
> +
>  /**
>   * dpaa2_io_service_enqueue_qd() - Enqueue a frame to a QD.
>   * @d: the given DPIO service.
> diff --git a/include/soc/fsl/dpaa2-io.h b/include/soc/fsl/dpaa2-io.h
> index ab51e40d11db..70997ab2146c 100644
> --- a/include/soc/fsl/dpaa2-io.h
> +++ b/include/soc/fsl/dpaa2-io.h
> @@ -97,9 +97,13 @@ void dpaa2_io_service_deregister(struct dpaa2_io *service,
>  int dpaa2_io_service_rearm(struct dpaa2_io *service,
>                            struct dpaa2_io_notification_ctx *ctx);
>
> +int dpaa2_io_service_pull_fq(struct dpaa2_io *d, u32 fqid,
> +                            struct dpaa2_io_store *s);
>  int dpaa2_io_service_pull_channel(struct dpaa2_io *d, u32 channelid,
>                                   struct dpaa2_io_store *s);
>
> +int dpaa2_io_service_enqueue_fq(struct dpaa2_io *d, u32 fqid,
> +                               const struct dpaa2_fd *fd);
>  int dpaa2_io_service_enqueue_qd(struct dpaa2_io *d, u32 qdid, u8 prio,
>                                 u16 qdbin, const struct dpaa2_fd *fd);
>  int dpaa2_io_service_release(struct dpaa2_io *d, u32 bpid,
> --
> 2.16.2
>