From: Kalle Valo <kvalo@codeaurora.org>
To: "Pali Rohár" <pali.rohar@gmail.com>
Cc: Ming Lei <ming.lei@canonical.com>,
"Luis R. Rodriguez" <mcgrof@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
David Gnedt <david.gnedt@davizone.at>,
Michal Kazior <michal.kazior@tieto.com>,
Daniel Wagner <wagi@monom.org>, Tony Lindgren <tony@atomide.com>,
Sebastian Reichel <sre@kernel.org>, Pavel Machek <pavel@ucw.cz>,
Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>,
Aaro Koskinen <aaro.koskinen@iki.fi>,
Grazvydas Ignotas <notasas@gmail.com>,
linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: [PATCH 5/6] wl1251: Parse and use MAC address from supplied NVS data
Date: Fri, 27 Jan 2017 09:54:34 +0200 [thread overview]
Message-ID: <87poj9ndj9.fsf@codeaurora.org> (raw)
In-Reply-To: <1482598381-16513-6-git-send-email-pali.rohar@gmail.com> ("Pali \=\?utf-8\?Q\?Roh\=C3\=A1r\=22's\?\= message of "Sat, 24 Dec 2016 17:53:00 +0100")
Pali Rohár <pali.rohar@gmail.com> writes:
> This patch implements parsing MAC address from NVS data which are sent to
> wl1251 chip. Calibration NVS data could contain valid MAC address and it
> will be used instead randomly generated.
>
> This patch also move code for requesting NVS data from userspace to driver
> initialization code to make sure that NVS data will be there at time when
> permanent MAC address is needed.
>
> Calibration NVS data for wl1251 are model specific. Every one device with
> wl1251 chip should have been calibrated in factory and needs to provide own
> calibration data.
>
> Default example wl1251-nvs.bin data found in linux-firmware repository and
> contains MAC address 00:00:20:07:03:09. So this MAC address is marked as
> invalid as it is not real device specific address, just example one.
>
> Format of calibration NVS data can be found at:
> http://notaz.gp2x.de/misc/pnd/wl1251/nvs_map.txt
>
> Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
[...]
> +static int wl1251_read_nvs_mac(struct wl1251 *wl)
> +{
> + u8 mac[ETH_ALEN];
> + int i;
> +
> + if (wl->nvs_len < 0x24)
> + return -ENODATA;
> +
> + /* length is 2 and data address is 0x546c (mask is 0xfffe) */
> + if (wl->nvs[0x19] != 2 || wl->nvs[0x1a] != 0x6d || wl->nvs[0x1b] != 0x54)
> + return -EINVAL;
> +
> + /* MAC is stored in reverse order */
> + for (i = 0; i < ETH_ALEN; i++)
> + mac[i] = wl->nvs[0x1c + ETH_ALEN - i - 1];
No magic numbers, please. Replace all nvs offsets with proper defines to
make the code more readable.
--
Kalle Valo
next prev parent reply other threads:[~2017-01-27 7:54 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-24 16:52 [PATCH 0/6] wl1251: Fix MAC address for Nokia N900 Pali Rohár
2016-12-24 16:52 ` [PATCH 1/6] firmware: Add request_firmware_prefer_user() function Pali Rohár
2016-12-24 16:52 ` [PATCH 2/6] wl1251: Use request_firmware_prefer_user() for loading NVS calibration data Pali Rohár
2016-12-25 20:15 ` Arend Van Spriel
2016-12-25 20:46 ` Pali Rohár
2016-12-26 15:43 ` Pavel Machek
2016-12-26 16:04 ` Pali Rohár
2016-12-26 16:35 ` Pavel Machek
2017-01-03 17:59 ` Luis R. Rodriguez
2017-05-03 19:02 ` Arend Van Spriel
2017-05-04 2:28 ` Luis R. Rodriguez
2017-05-12 20:55 ` Arend Van Spriel
2017-01-27 7:33 ` Kalle Valo
2017-01-27 8:58 ` Arend Van Spriel
2017-01-27 9:43 ` Pali Rohár
2017-01-27 10:05 ` Arend Van Spriel
2017-01-27 10:10 ` Pali Rohár
2017-01-27 10:19 ` Arend Van Spriel
2017-01-27 10:34 ` Pali Rohár
2017-01-27 11:49 ` Kalle Valo
2017-01-27 11:57 ` Pali Rohár
2017-01-27 12:26 ` Kalle Valo
2017-01-27 12:53 ` Arend Van Spriel
2017-01-27 13:16 ` Pali Rohár
2017-01-27 13:11 ` Pali Rohár
2017-01-27 15:23 ` Kalle Valo
2017-01-27 15:41 ` Pali Rohár
2017-01-27 19:40 ` Pavel Machek
2017-01-30 17:53 ` Tony Lindgren
2017-01-30 18:03 ` Pali Rohár
2017-01-31 6:35 ` Kalle Valo
2017-01-31 15:59 ` Tony Lindgren
2017-02-01 8:33 ` Pali Rohár
2017-02-01 9:35 ` Michal Kazior
2017-01-29 17:10 ` Luis R. Rodriguez
2017-01-27 12:03 ` Pavel Machek
2016-12-24 16:52 ` [PATCH 3/6] wl1251: Update wl->nvs_len after wl->nvs is valid Pali Rohár
2016-12-24 18:02 ` Pavel Machek
2016-12-24 16:52 ` [PATCH 4/6] wl1251: Generate random MAC address only if driver does not have valid Pali Rohár
2016-12-24 18:08 ` Pavel Machek
2016-12-24 18:38 ` Pali Rohár
2016-12-24 16:53 ` [PATCH 5/6] wl1251: Parse and use MAC address from supplied NVS data Pali Rohár
2016-12-24 18:14 ` Pavel Machek
2016-12-24 18:40 ` Pali Rohár
2017-01-27 7:54 ` Kalle Valo [this message]
2016-12-24 16:53 ` [PATCH 6/6] wl1251: Set generated MAC address back to " Pali Rohár
2016-12-24 18:17 ` Pavel Machek
2016-12-24 18:44 ` Pali Rohár
2017-01-27 7:56 ` Kalle Valo
2017-01-27 9:05 ` Pali Rohár
2017-01-27 9:30 ` Kalle Valo
2017-11-09 23:38 ` [PATCH v2 0/6] wl1251: Fix MAC address for Nokia N900 Pali Rohár
2017-11-09 23:38 ` [PATCH v2 1/6] wl1251: Update wl->nvs_len after wl->nvs is valid Pali Rohár
2018-02-27 13:51 ` [v2,1/6] " Kalle Valo
2018-02-27 13:51 ` Kalle Valo
2017-11-09 23:38 ` [PATCH v2 2/6] wl1251: Generate random MAC address only if driver does not have valid Pali Rohár
2017-11-09 23:38 ` [PATCH v2 3/6] wl1251: Parse and use MAC address from supplied NVS data Pali Rohár
2017-11-09 23:38 ` [PATCH v2 4/6] wl1251: Set generated MAC address back to " Pali Rohár
2017-11-09 23:38 ` [PATCH v2 5/6] firmware: Add request_firmware_prefer_user() function Pali Rohár
2017-11-10 20:26 ` Luis R. Rodriguez
2017-11-10 20:28 ` Luis R. Rodriguez
2017-11-10 21:08 ` Pali Rohár
2017-11-10 23:35 ` Luis R. Rodriguez
2017-11-09 23:38 ` [PATCH v2 6/6] wl1251: Use request_firmware_prefer_user() for loading NVS calibration data Pali Rohár
2018-01-02 19:23 ` [PATCH v2 0/6] wl1251: Fix MAC address for Nokia N900 Pali Rohár
2018-01-05 1:45 ` Luis R. Rodriguez
2018-01-27 14:14 ` Pali Rohár
2018-02-19 8:27 ` Kalle Valo
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