linux-kernel - Re: [PATCH 00/22] hisi

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Date:   Wed, 17 May 2017 14:38:52 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     John Garry <john.garry@...wei.com>
Cc:     "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        John Garry <john.garry2@...l.dcu.ie>, linuxarm@...wei.com,
        linux-scsi@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 00/22] hisi_sas: hip08 support

On Wed, May 17, 2017 at 12:49 PM, John Garry <john.garry@...wei.com> wrote:
> This patchset adds support for the HiSilicon SAS controller
> in the hip08 chipset.
>
> The key difference compared to earlier chipsets is that the
> controller is an integrated PCI endpoint in hip08.
> As such, the controller is a pci device (not a platform device,
> like v2 hw in hip07).
>
> The driver is refactored so it can support both platform and
> pci device-based controllers.
>
> File hisi_sas_pci_init.c is introduced for pci device probing
> and initialization. Common functionality is still in
> hisi_sas_main.c, along with platform device probing and
> initialization.
>
> New hw layer file hisi_sas_v3_hw.c is added for hip08
> controller support. HW revisions v2 and v3 are very similar,
> but it was decided to keep support in separate files for now.
>
> As for the patches, (ignoring #1 and #2) the first few
> reorganise some functions from v2 hw.c into main.c, as they
> are required for v3 hw. Then support is added for pci
> device-based controller in subsequent patches.
> And then hip08 support is added in the final patches.

Looks good overall, but I have some high-level comments
on a couple of patches. I'm sure we can resolve them all
easily.

      Arnd