linux-kernel - Re: [PATCH v4] Bluetooth: btintel: Correctly declare all module firmware files

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Date:   Tue, 22 Nov 2022 12:31:21 +0000
From:   Dimitri John Ledkov <dimitri.ledkov@...onical.com>
To:     Tedd Ho-Jeong An <tedd.an@...ux.intel.com>
Cc:     Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] Bluetooth: btintel: Correctly declare all module
 firmware files

On Mon, 21 Nov 2022 at 23:44, Tedd Ho-Jeong An <tedd.an@...ux.intel.com> wrote:
>
> Hi Dimitri,
>
> On Mon, 2022-11-21 at 14:51 +0000, Dimitri John Ledkov wrote:
> > Strictly encode patterns of supported hw_variants of firmware files
> > the kernel driver supports requesting. This now includes many missing
> > and previously undeclared module firmware files for 0x07, 0x08,
> > 0x11-0x14, 0x17-0x1b hw_variants.
> >
> > This especially affects environments that only install firmware files
> > declared and referenced by the kernel modules. In such environments,
> > only the declared firmware files are copied resulting in most Intel
> > Bluetooth devices not working. I.e. host-only dracut-install initrds,
> > or Ubuntu Core kernel snaps.
> >
> > BugLink: https://bugs.launchpad.net/bugs/1970819
> > Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@...onical.com>
> > ---
> >  Changes since v3:
> >  - Hopefully pacify trailing whitespace from GitLint in this optional
> >    portion of the commit.
> >
> >  Changes since v2:
> >  - encode patterns for 0x17 0x18 0x19 0x1b hw_variants
> >  - rebase on top of latest rc tag
> >
> >  Changes since v1:
> >  - encode strict patterns of supported firmware files for each of the
> >    supported hw_variant generations.
> >
> >  drivers/bluetooth/btintel.c | 26 ++++++++++++++++++++++----
> >  1 file changed, 22 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
> > index a657e9a3e96a..55efc4a067db 100644
> > --- a/drivers/bluetooth/btintel.c
> > +++ b/drivers/bluetooth/btintel.c
> > @@ -2656,7 +2656,25 @@ MODULE_AUTHOR("Marcel Holtmann <marcel@...tmann.org>");
> >  MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
> >  MODULE_VERSION(VERSION);
> >  MODULE_LICENSE("GPL");
> > -MODULE_FIRMWARE("intel/ibt-11-5.sfi");
> > -MODULE_FIRMWARE("intel/ibt-11-5.ddc");
> > -MODULE_FIRMWARE("intel/ibt-12-16.sfi");
> > -MODULE_FIRMWARE("intel/ibt-12-16.ddc");
> > +/* hw_variant 0x07 0x08 */
> > +MODULE_FIRMWARE("intel/ibt-hw-37.7.*-fw-*.*.*.*.*.bseq");
> > +MODULE_FIRMWARE("intel/ibt-hw-37.7.bseq");
> > +MODULE_FIRMWARE("intel/ibt-hw-37.8.*-fw-*.*.*.*.*.bseq");
> > +MODULE_FIRMWARE("intel/ibt-hw-37.8.bseq");
> > +/* hw_variant 0x0b 0x0c */
> > +MODULE_FIRMWARE("intel/ibt-11-*.sfi");
> > +MODULE_FIRMWARE("intel/ibt-12-*.sfi");
> > +MODULE_FIRMWARE("intel/ibt-11-*.ddc");
> > +MODULE_FIRMWARE("intel/ibt-12-*.ddc");
> > +/* hw_variant 0x11 0x12 0x13 0x14 */
> > +MODULE_FIRMWARE("intel/ibt-17-*-*.sfi");
> > +MODULE_FIRMWARE("intel/ibt-18-*-*.sfi");
> > +MODULE_FIRMWARE("intel/ibt-19-*-*.sfi");
> > +MODULE_FIRMWARE("intel/ibt-20-*-*.sfi");
> > +MODULE_FIRMWARE("intel/ibt-17-*-*.ddc");
> > +MODULE_FIRMWARE("intel/ibt-18-*-*.ddc");
> > +MODULE_FIRMWARE("intel/ibt-19-*-*.ddc");
> > +MODULE_FIRMWARE("intel/ibt-20-*-*.ddc");
>
> There are firmware files for hw_variant 0x11 and 0x12 in an old format like
> ibt-17-*.sfi, ibt-17-*.ddc, ibt-18-*.sfi, and ibt-18-*.ddc.
>

I believe 0x11 and 0x12 variants have stopped using the ibt-17-*.sfi,
ibt-17-*.ddc, ibt-18-*.sfi, and ibt-18-*.ddc patterns in
af3715e5cef8 ("Bluetooth: btusb: Update firmware filename for Intel
9x60 and later")
Which was shipped in v4.15. As long as I mark this patch for stable
v4.15+ this is documenting the firmware file the current driver can
request.
Distributions/deployments that use this current version of the driver
should not ship  unused ibt-17-*.sfi, ibt-17-*.ddc, ibt-18-*.sfi, and
ibt-18-*.ddc files anymore.

> > +/* hw_variant 0x17 0x18 0x19 0x1b, read and use cnvi/cnvr */
> > +MODULE_FIRMWARE("ibt-[0-9][0-9][0-9][0-9]-[0-9][0-9][0-9][0-9].sfi");
> > +MODULE_FIRMWARE("ibt-[0-9][0-9][0-9][0-9]-[0-9][0-9][0-9][0-9].ddc");
>
> I believe these are under intel/ folder.
>

Yes!

Will fix this up.

-- 
okurrr,

Dimitri