linux-kernel - Re: [Linux-nvdimm] [PATCH 08/21] nd: ndctl.h, the nd ioctl abi

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Date:	Fri, 24 Apr 2015 09:31:00 -0700
From:	Dan Williams <dan.j.williams@...el.com>
To:	Toshi Kani <toshi.kani@...com>
Cc:	linux-acpi@...r.kernel.org,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Robert Moore <robert.moore@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-nvdimm@...ts.01.org" <linux-nvdimm@...ts.01.org>
Subject: Re: [Linux-nvdimm] [PATCH 08/21] nd: ndctl.h, the nd ioctl abi

On Fri, Apr 24, 2015 at 9:09 AM, Toshi Kani <toshi.kani@...com> wrote:
> On Fri, 2015-04-24 at 09:56 -0600, Toshi Kani wrote:
>> On Fri, 2015-04-17 at 21:35 -0400, Dan Williams wrote:
>> > Most configuration of the nd-subsystem is done via nd-sysfs.  However,
>> > the NFIT specification defines a small set of messages that can be
>> > passed to the subsystem via platform-firmware-defined methods.  The
>> > command set (as of the current version of the NFIT-DSM spec) is:
>> >
>> >     NFIT_CMD_SMART: media health and diagnostics
>> >     NFIT_CMD_GET_CONFIG_SIZE: size of the label space
>> >     NFIT_CMD_GET_CONFIG_DATA: read label
>> >     NFIT_CMD_SET_CONFIG_DATA: write label
>> >     NFIT_CMD_VENDOR: vendor-specific command passthrough
>> >     NFIT_CMD_ARS_CAP: report address-range-scrubbing capabilities
>> >     NFIT_CMD_START_ARS: initiate scrubbing
>> >     NFIT_CMD_QUERY_ARS: report on scrubbing state
>> >     NFIT_CMD_SMART_THRESHOLD: configure alarm thresholds for smart events
>>
>> "nd/bus.c" provides two features, 1) the top level ND bus driver which
>> is the central part of the ND, and 2) the ioctl interface specific to
>> the example-DSM-interface.  I think the example-DSM-specific part should
>> be put into an example-DSM-support module, so that the ND can support
>> other _DSMs as necessary.  Also, _DSM needs to be handled as optional.
>
> And the same for "nd/acpi.c", which is 1) the ACPI0012 handler, and 2)
> the example-DSM-support module.  I think they need to be separated.
>

Ok, send me a patch as I'm not sure what type of separation you are proposing.
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