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From:   Sharvari Harisangam <sharvari.harisangam@nxp.com>
To:     Dominique MARTINET <dominique.martinet@atmark-techno.com>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
        Amitkumar Karwar <amitkarwar@gmail.com>,
        =?iso-8859-1?Q?Jonas_Dre=DFler?= <verdre@v0yd.nl>
CC:     Takashi Iwai <tiwai@suse.de>, Tsuchiya Yuto <kitakar@gmail.com>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Arnd Bergmann <arnd@arndb.de>,
        Lee Jones <lee.jones@linaro.org>,
        Kalle Valo <kvalo@codeaurora.org>,
        Xinming Hu <huxinming820@gmail.com>,
        Ganapathi Bhat <ganapathi017@gmail.com>
Subject: RE: [EXT] Re: mwifiex cmd timeout on one pci variant
Thread-Topic: [EXT] Re: mwifiex cmd timeout on one pci variant
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Date:   Wed, 8 Sep 2021 05:45:53 +0000
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Hi Dominique,

Use firmware from https://git.kernel.org/pub/scm/linux/kernel/git/firmware/=
linux-firmware.git/tree/mrvl
for mwifiex driver.


Thanks,
Sharvari

> -----Original Message-----
> From: Dominique MARTINET <dominique.martinet@atmark-techno.com>
> Sent: Wednesday, September 8, 2021 11:06 AM
> To: linux-wireless@vger.kernel.org; Amitkumar Karwar
> <amitkarwar@gmail.com>; Jonas Dre=DFler <verdre@v0yd.nl>
> Cc: Takashi Iwai <tiwai@suse.de>; Tsuchiya Yuto <kitakar@gmail.com>; Geer=
t
> Uytterhoeven <geert+renesas@glider.be>; Arnd Bergmann <arnd@arndb.de>;
> Lee Jones <lee.jones@linaro.org>; Kalle Valo <kvalo@codeaurora.org>; Xinm=
ing
> Hu <huxinming820@gmail.com>; Sharvari Harisangam
> <sharvari.harisangam@nxp.com>; Ganapathi Bhat <ganapathi017@gmail.com>
> Subject: [EXT] Re: mwifiex cmd timeout on one pci variant
>=20
> Caution: EXT Email
>=20
> (+cc Jonas Dre=DFler, sorry for two mails in a row for others)
>=20
> Dominique MARTINET wrote on Wed, Sep 08, 2021 at 01:43:43PM +0900:
> > I've got a board with an i.MX8MP chip, and three different marvell
> > W8997
> > M.2 modules
>=20
> (I just noticed Jonas' patches "mwifiex: Work around firmware bugs on
> 88W8897 chip" on linux-wireless, but it doesn't seem to change anything f=
or me,
> so my problem isn't related to pci post or interrupt wake apparently. Was=
 worth
> a try...)
>=20
> I'm surprised though he says the latest firmware is 15.68.19.p21, but I c=
an't find
> it anywhere -- linux-firmware only has up to 16.68.1.p179 and I got 16.68=
.10.p16
> from NXP dependencies, and now I'm searching a bit harder i also found
> 16.92.10.p124 !? (note 16.92 instead of 16.68, also
> NXP) but I have no idea where to find anything 'official' from marvell as
> git.marvell.com/mwifiex-firmware.git disappeared.
>=20
> Where could I find this version you speak of?
>=20
>=20
> Thanks,
>=20
> > -- one from laird which works fine, and two from azurewave which are
> > labeled exactly the same AW-CM276MA 2276MA PCIE-UART except one works
> > and not the other.
> > The inscription on the chip itself are slightly different, one saying
> > it's a W8997-M1216 from marvell (works) and the other having
> > AW-CM276NF azurewave mark. The electronics around are also different.
> >
> > I could say it's just a bad chip, but I've actually got two of each
> > (samples) which act the same... And I've tried it in another device
> > where it works with the same kernel/firmware, so there must be
> > something wrong on the board as well as the wifi card works elsewhere.
> >
> >
> > Anyway, if someone knows how to get around to debugging this, I'd
> > appreciate a pointer! I can't see anything wrong with the tools I have
> > here.
> > If nothing else, I can't read /sys/class/devcoredump/devcd*/data that
> > I saw Amitkumar Karwar request somewhere else, so just deciphering
> > this would be great help.
> >
> >
> > dmesg looks like this on failure:
> > [  108.513028] mwifiex_pcie 0000:01:00.0: mwifiex_cmd_timeout_func:
> > Timeout cmd id =3D 0x10, act =3D 0x1 [  108.522388] mwifiex_pcie
> > 0000:01:00.0: num_data_h2c_failure =3D 0 [  108.528310] mwifiex_pcie
> > 0000:01:00.0: num_cmd_h2c_failure =3D 0 [  108.534143] mwifiex_pcie
> > 0000:01:00.0: is_cmd_timedout =3D 1 [  108.539631] mwifiex_pcie
> > 0000:01:00.0: num_tx_timeout =3D 0 [  108.545029] mwifiex_pcie
> > 0000:01:00.0: last_cmd_index =3D 0 [  108.550431] mwifiex_pcie
> > 0000:01:00.0: last_cmd_id: 10 00 28 00 16 00 cd 00 1e 00 [
> > 108.557913] mwifiex_pcie 0000:01:00.0: last_cmd_act: 01 00 13 00 01 00
> > 01 00 00 00 [  108.565484] mwifiex_pcie 0000:01:00.0:
> > last_cmd_resp_index =3D 4 [  108.571318] mwifiex_pcie 0000:01:00.0:
> > last_cmd_resp_id: df 80 28 80 16 80 cd 80 1e 80 [  108.579237]
> > mwifiex_pcie 0000:01:00.0: last_event_index =3D 2 [  108.584810]
> > mwifiex_pcie 0000:01:00.0: last_event: 00 00 0b 00 0a 00 00 00 00 00 [
> > 108.592206] mwifiex_pcie 0000:01:00.0: data_sent=3D0 cmd_sent=3D1 [
> > 108.597954] mwifiex_pcie 0000:01:00.0: ps_mode=3D1 ps_state=3D0 [
> > 108.604085] mwifiex_pcie 0000:01:00.0: =3D=3D=3Dmwifiex driverinfo dump
> > start=3D=3D=3D [  108.613552] mwifiex_pcie 0000:01:00.0: info: MWIFIEX =
VERSION:
> mwifiex 1.0 (16.68.1.p179) [  108.621748] mwifiex_pcie 0000:01:00.0: PCIE
> register dump start [  108.627676] mwifiex_pcie 0000:01:00.0: pcie scratc=
h
> register:
> > [  108.633441] mwifiex_pcie 0000:01:00.0: reg:0xcf0, value=3D0xfedcba00
> >                reg:0xcf8, value=3D0x8260049
> >                reg:0xcfc, value=3D0x1282820
> >
> > [  108.648584] mwifiex_pcie 0000:01:00.0: PCIE register dump end [
> > 108.654411] mwifiex_pcie 0000:01:00.0: =3D=3D=3Dmwifiex driverinfo dump
> > end=3D=3D=3D [  108.661119] mwifiex_pcie 0000:01:00.0: =3D=3D mwifiex f=
irmware
> > dump start =3D=3D [  110.560689] mwifiex_pcie 0000:01:00.0: cmd_wait_q
> > terminated: -110 [  148.127107] mwifiex_pcie 0000:01:00.0: =3D=3D mwifi=
ex
> > firmware dump end =3D=3D [  148.134552] mwifiex_pcie 0000:01:00.0: =3D=
=3D
> > mwifiex dump information to /sys/class/devcoredump start [
> > 148.143669] mwifiex_pcie 0000:01:00.0: =3D=3D mwifiex dump information =
to
> > /sys/class/devcoredump end [  148.152485] mwifiex_pcie 0000:01:00.0:
> PREP_CMD: FW is in bad state [  148.158915] mwifiex_pcie 0000:01:00.0: in=
fo:
> shutdown mwifiex...
> > [  148.165829] mwifiex_pcie 0000:01:00.0: PREP_CMD: card is removed [
> > 148.443761] mwifiex_pcie 0000:01:00.0: info: dnld wifi firmware from
> > 169340 bytes [  149.511193] mwifiex_pcie 0000:01:00.0: info: FW
> > download over, size 632240 bytes [  150.163677] mwifiex_pcie
> > 0000:01:00.0: WLAN FW is active [  150.231583] mwifiex_pcie
> > 0000:01:00.0: info: MWIFIEX VERSION: mwifiex 1.0 (16.68.1.p179) [
> > 150.239814] mwifiex_pcie 0000:01:00.0: driver_version =3D mwifiex 1.0
> > (16.68.1.p179)
> >
> > I tried with two different firmwares, full dmesg and data.txt are here:
> > hang on `ip link set mlan0 up`:
> > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fcod=
e
> > wreck.org%2Ftmp%2F16.68.1.p179-
> data.txt&amp;data=3D04%7C01%7Csharvari.ha
> >
> risangam%40nxp.com%7C86cd8c9cb9ea4e65eeb508d9728a9b73%7C686ea1d3
> bc2b4c
> >
> 6fa92cd99c5c301635%7C0%7C1%7C637666761903623322%7CUnknown%7CT
> WFpbGZsb3
> >
> d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3
> D%7
> >
> C3000&amp;sdata=3DI2QRJPwCgkPDqs1v8DnNGNciAHdqgPRIiYcrAc%2BPo4Y%3D
> &amp;r
> > eserved=3D0
> > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fcod=
e
> > wreck.org%2Ftmp%2F16.68.1.p179-
> dmesg&amp;data=3D04%7C01%7Csharvari.haris
> >
> angam%40nxp.com%7C86cd8c9cb9ea4e65eeb508d9728a9b73%7C686ea1d3bc
> 2b4c6fa
> >
> 92cd99c5c301635%7C0%7C1%7C637666761903623322%7CUnknown%7CTWFp
> bGZsb3d8e
> >
> yJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7
> C30
> >
> 00&amp;sdata=3DBcz1xLDvenNyPAF1l9lErWdzXR03FRmt9IHiWSTZUhs%3D&amp;r
> eserv
> > ed=3D0
> >
> > hang on `iw mlan0 scan` after successful link up:
> > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fcod=
e
> > wreck.org%2Ftmp%2F16.68.1.p179-2-
> data.txt&amp;data=3D04%7C01%7Csharvari.
> >
> harisangam%40nxp.com%7C86cd8c9cb9ea4e65eeb508d9728a9b73%7C686ea1
> d3bc2b
> >
> 4c6fa92cd99c5c301635%7C0%7C1%7C637666761903623322%7CUnknown%7C
> TWFpbGZs
> >
> b3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0
> %3D
> > %7C3000&amp;sdata=3D6UC7r1UTPkAbjJ7EwRvDKtDy9NgAFw2PExw9iObdabI%
> 3D&amp;r
> > eserved=3D0
> > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fcod=
e
> > wreck.org%2Ftmp%2F16.68.1.p179-2-
> dmesg&amp;data=3D04%7C01%7Csharvari.har
> >
> isangam%40nxp.com%7C86cd8c9cb9ea4e65eeb508d9728a9b73%7C686ea1d3b
> c2b4c6
> >
> fa92cd99c5c301635%7C0%7C1%7C637666761903623322%7CUnknown%7CTW
> FpbGZsb3d
> >
> 8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D
> %7C
> >
> 3000&amp;sdata=3Detz0gCsNgiBRvrff7J0GH%2BOR%2Bn7TYgBj3RGNLkPbuGo%3
> D&amp;
> > reserved=3D0
> >
> > other firmware (dmesg truncated to just timeout message):
> > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fcod=
e
> > wreck.org%2Ftmp%2F16.68.10.p16-
> data.txt&amp;data=3D04%7C01%7Csharvari.ha
> >
> risangam%40nxp.com%7C86cd8c9cb9ea4e65eeb508d9728a9b73%7C686ea1d3
> bc2b4c
> >
> 6fa92cd99c5c301635%7C0%7C1%7C637666761903623322%7CUnknown%7CT
> WFpbGZsb3
> >
> d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3
> D%7
> >
> C3000&amp;sdata=3Dfz34AoQH2IwUU%2B3RyrTWUu8tLyqJTUQb0YWcWbWlVZ8
> %3D&amp;r
> > eserved=3D0
> > https://eur01.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fcod=
e
> > wreck.org%2Ftmp%2F16.68.10.p16-
> dmesg&amp;data=3D04%7C01%7Csharvari.haris
> >
> angam%40nxp.com%7C86cd8c9cb9ea4e65eeb508d9728a9b73%7C686ea1d3bc
> 2b4c6fa
> >
> 92cd99c5c301635%7C0%7C1%7C637666761903623322%7CUnknown%7CTWFp
> bGZsb3d8e
> >
> yJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7
> C30
> >
> 00&amp;sdata=3DABzwF0ix3q5PdbqI%2Bm8SQ2U6teVeh%2FclaDkgQBVKrpA%3D
> &amp;re
> > served=3D0
> >
> >
> >
> > Extra info:
> >  - it doesn't always fail at the same place, so this looks like a
> > tolerance problem? e.g. sometimes transmission works and sometimes a
> > message is garbled?
> >
> > - on the working azurewave module I can keep the card maxed at
> > ~300mbps in or ~100mbps out without problem for a while with iperf so
> > signals can't be that bad...? Or that could just be wishful thinking!
> --
> Dominique Martinet