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From:   Kashyap Desai <kashyap.desai@broadcom.com>
References: <20190605190836.32354-1-hch@lst.de> <20190605190836.32354-11-hch@lst.de>
 <cd713506efb9579d1f69a719d831c28d@mail.gmail.com> <20190613084458.GB13221@lst.de>
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Date:   Fri, 14 Jun 2019 01:34:00 +0530
Message-ID: <d411baa1bdd34f1a1289480d13fe1cef@mail.gmail.com>
Subject: RE: [PATCH 10/13] megaraid_sas: set virt_boundary_mask in the scsi host
To:     Christoph Hellwig <hch@lst.de>
Cc:     Jens Axboe <axboe@kernel.dk>, Sebastian Ott <sebott@linux.ibm.com>,
        Sagi Grimberg <sagi@grimberg.me>,
        Max Gurtovoy <maxg@mellanox.com>,
        Bart Van Assche <bvanassche@acm.org>,
        Ulf Hansson <ulf.hansson@linaro.org>,
        Alan Stern <stern@rowland.harvard.edu>,
        Oliver Neukum <oneukum@suse.com>, linux-block@vger.kernel.org,
        linux-rdma@vger.kernel.org, linux-mmc@vger.kernel.org,
        linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org,
        "PDL,MEGARAIDLINUX" <megaraidlinux.pdl@broadcom.com>,
        PDL-MPT-FUSIONLINUX <mpt-fusionlinux.pdl@broadcom.com>,
        linux-hyperv@vger.kernel.org, linux-usb@vger.kernel.org,
        usb-storage@lists.one-eyed-alien.net, linux-kernel@vger.kernel.org
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>
> So before I respin this series, can you help with a way to figure out
for
> mpt3sas and megaraid if a given controller supports NVMe devices at all,
so
> that we don't have to set the virt boundary if not?


In MegaRaid we have below enum -        VENTURA_SERIES and AERO_SERIES
supports NVME

enum MR_ADAPTER_TYPE {
        MFI_SERIES = 1,
        THUNDERBOLT_SERIES = 2,
        INVADER_SERIES = 3,
        VENTURA_SERIES = 4,
        AERO_SERIES = 5,
};

In mpt3sas driver we have below method - If IOC FACT reports NVME Device
support in Protocol Flags, we can consider it as HBA with NVME drive
support.

ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_NVME_DEVICES

Kashyap