linux-kernel - RE: [PATCH 10/13] megaraid_sas: set virt_boundary

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Date:   Fri, 14 Jun 2019 01:34:00 +0530
From:   Kashyap Desai <kashyap.desai@...adcom.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Jens Axboe <axboe@...nel.dk>, Sebastian Ott <sebott@...ux.ibm.com>,
        Sagi Grimberg <sagi@...mberg.me>,
        Max Gurtovoy <maxg@...lanox.com>,
        Bart Van Assche <bvanassche@....org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Oliver Neukum <oneukum@...e.com>, linux-block@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-mmc@...r.kernel.org,
        linux-nvme@...ts.infradead.org, linux-scsi@...r.kernel.org,
        "PDL,MEGARAIDLINUX" <megaraidlinux.pdl@...adcom.com>,
        PDL-MPT-FUSIONLINUX <mpt-fusionlinux.pdl@...adcom.com>,
        linux-hyperv@...r.kernel.org, linux-usb@...r.kernel.org,
        usb-storage@...ts.one-eyed-alien.net, linux-kernel@...r.kernel.org
Subject: RE: [PATCH 10/13] megaraid_sas: set virt_boundary_mask in the scsi host

>
> 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