linux-kernel - RE: [EXT] Re: [V5 1/2] dmaengine: fsl-dpaa2-qdma: Add the DPDMAI(Data Path DMA Interface) support

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Date:   Tue, 22 Oct 2019 10:19:18 +0000
From:   Peng Ma <peng.ma@....com>
To:     Anders Roxell <anders.roxell@...aro.org>
CC:     Vinod Koul <vkoul@...nel.org>,
        "dan.j.williams@...el.com" <dan.j.williams@...el.com>,
        Leo Li <leoyang.li@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>
Subject: RE: [EXT] Re: [V5 1/2] dmaengine: fsl-dpaa2-qdma: Add the DPDMAI(Data
 Path DMA Interface) support

Hi Anders && Viod,

I sent v6 patch to fix the build error, please check.
Patchwork link:
https://patchwork.kernel.org/project/linux-dmaengine/list/?series=191397

Best Regards,
Peng
>-----Original Message-----
>From: Anders Roxell <anders.roxell@...aro.org>
>Sent: 2019年10月22日 17:27
>To: Peng Ma <peng.ma@....com>
>Cc: Vinod Koul <vkoul@...nel.org>; dan.j.williams@...el.com; Leo Li
><leoyang.li@....com>; linux-kernel@...r.kernel.org;
>dmaengine@...r.kernel.org
>Subject: Re: [EXT] Re: [V5 1/2] dmaengine: fsl-dpaa2-qdma: Add the
>DPDMAI(Data Path DMA Interface) support
>
>Caution: EXT Email
>
>On Thu, 17 Oct 2019 at 08:16, Peng Ma <peng.ma@....com> wrote:
>>
>> Hi Vinod,
>>
>> Thanks very much for your reply.
>>
>> Best Regards,
>> Peng
>> >-----Original Message-----
>> >From: Vinod Koul <vkoul@...nel.org>
>> >Sent: 2019年10月17日 12:11
>> >To: Peng Ma <peng.ma@....com>
>> >Cc: dan.j.williams@...el.com; Leo Li <leoyang.li@....com>;
>> >linux-kernel@...r.kernel.org; dmaengine@...r.kernel.org
>> >Subject: [EXT] Re: [V5 1/2] dmaengine: fsl-dpaa2-qdma: Add the
>> >DPDMAI(Data Path DMA Interface) support
>> >
>> >Caution: EXT Email
>> >
>> >On 30-09-19, 02:04, Peng Ma wrote:
>> >> The MC(Management Complex) exports the DPDMAI(Data Path DMA
>> >Interface)
>> >> object as an interface to operate the DPAA2(Data Path Acceleration
>> >> Architecture 2) qDMA Engine. The DPDMAI enables sending frame-based
>> >> requests to qDMA and receiving back confirmation response on
>> >> transaction completion, utilizing the DPAA2 QBMan(Queue Manager and
>> >> Buffer Manager
>> >> hardware) infrastructure. DPDMAI object provides up to two
>> >> priorities for processing qDMA requests.
>> >> The following list summarizes the DPDMAI main features and capabilities:
>> >>       1. Supports up to two scheduling priorities for processing
>> >>       service requests.
>> >>       - Each DPDMAI transmit queue is mapped to one of two service
>> >>       priorities, allowing further prioritization in hardware between
>> >>       requests from different DPDMAI objects.
>> >>       2. Supports up to two receive queues for incoming transaction
>> >>       completion confirmations.
>> >>       - Each DPDMAI receive queue is mapped to one of two receive
>> >>       priorities, allowing further prioritization between other
>> >>       interfaces when associating the DPDMAI receive queues to DPIO
>> >>       or DPCON(Data Path Concentrator) objects.
>> >>       3. Supports different scheduling options for processing received
>> >>       packets:
>> >>       - Queues can be configured either in 'parked' mode (default),
>> >>       or attached to a DPIO object, or attached to DPCON object.
>> >>       4. Allows interaction with one or more DPIO objects for
>> >>       dequeueing/enqueueing frame descriptors(FD) and for
>> >>       acquiring/releasing buffers.
>> >>       5. Supports enable, disable, and reset operations.
>> >>
>> >> Add dpdmai to support some platforms with dpaa2 qdma engine.
>> >
>> >Applied both, thanks
>
>I see this error when I'm building.
>
>WARNING: modpost: missing MODULE_LICENSE() in
>drivers/dma/fsl-dpaa2-qdma/dpdmai.o
>see include/linux/module.h for more information
>ERROR: "dpdmai_enable" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko]
>undefined!
>ERROR: "dpdmai_set_rx_queue"
>[drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined!
>ERROR: "dpdmai_get_tx_queue"
>[drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined!
>ERROR: "dpdmai_get_rx_queue"
>[drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined!
>ERROR: "dpdmai_get_attributes"
>[drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko] undefined!
>ERROR: "dpdmai_open" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko]
>undefined!
>ERROR: "dpdmai_close" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko]
>undefined!
>ERROR: "dpdmai_disable" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko]
>undefined!
>ERROR: "dpdmai_reset" [drivers/dma/fsl-dpaa2-qdma/dpaa2-qdma.ko]
>undefined!
>make[2]: *** [../scripts/Makefile.modpost:95: __modpost] Error 1
>make[1]: *** [/srv/src/kernel/next/Makefile:1282: modules] Error 2
>make: *** [Makefile:179: sub-make] Error 2
>make: Target 'Image' not remade because of errors.
>make: Target 'modules' not remade because of errors.
>
>any other that see the same ?
>
>Cheers,
>Anders