From: Hector Martin <marcan@marcan.st>
To: Dmitry Osipenko <digetx@gmail.com>,
Kalle Valo <kvalo@codeaurora.org>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Len Brown <lenb@kernel.org>, Arend van Spriel <aspriel@gmail.com>,
Franky Lin <franky.lin@broadcom.com>,
Hante Meuleman <hante.meuleman@broadcom.com>,
Chi-hsien Lin <chi-hsien.lin@infineon.com>,
Wright Feng <wright.feng@infineon.com>
Cc: "Sven Peter" <sven@svenpeter.dev>,
"Alyssa Rosenzweig" <alyssa@rosenzweig.io>,
"Mark Kettenis" <kettenis@openbsd.org>,
"Rafał Miłecki" <zajec5@gmail.com>,
"Pieter-Paul Giesberts" <pieter-paul.giesberts@broadcom.com>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Hans de Goede" <hdegoede@redhat.com>,
"John W. Linville" <linville@tuxdriver.com>,
"brian m. carlson" <sandals@crustytoothpaste.net>,
"Andy Shevchenko" <andy.shevchenko@gmail.com>,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com,
SHA-cyfmac-dev-list@infineon.com
Subject: Re: [PATCH v2 04/35] brcmfmac: firmware: Support having multiple alt paths
Date: Tue, 4 Jan 2022 17:43:52 +0900 [thread overview]
Message-ID: <7c8d5655-a041-e291-95c1-be200233f87f@marcan.st> (raw)
In-Reply-To: <5ddde705-f3fa-ff78-4d43-7a02d6efaaa6@gmail.com>
On 2022/01/04 17:26, Dmitry Osipenko wrote:
> 04.01.2022 10:26, Hector Martin пишет:
>> Apple platforms have firmware and config files identified with multiple
>> dimensions. We want to be able to find the most specific firmware
>> available for any given platform, progressively trying more general
>> firmwares.
>>
>> First, add support for having multiple alternate firmware paths.
>>
>> Acked-by: Linus Walleij <linus.walleij@linaro.org>
>> Signed-off-by: Hector Martin <marcan@marcan.st>
>> ---
>> .../broadcom/brcm80211/brcmfmac/firmware.c | 75 ++++++++++++++-----
>> .../broadcom/brcm80211/brcmfmac/firmware.h | 2 +
>> 2 files changed, 59 insertions(+), 18 deletions(-)
>>
>> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
>> index 0497b721136a..7570dbf22cdd 100644
>> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
>> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c
>> @@ -427,6 +427,8 @@ void brcmf_fw_nvram_free(void *nvram)
>> struct brcmf_fw {
>> struct device *dev;
>> struct brcmf_fw_request *req;
>> + const char *alt_paths[BRCMF_FW_MAX_ALT_PATHS];
>> + int alt_index;
>
> unsigned int
Ack.
>
>> u32 curpos;
>> void (*done)(struct device *dev, int err, struct brcmf_fw_request *req);
>> };
>> @@ -592,14 +594,18 @@ static int brcmf_fw_complete_request(const struct firmware *fw,
>> return (cur->flags & BRCMF_FW_REQF_OPTIONAL) ? 0 : ret;
>> }
>>
>> -static char *brcm_alt_fw_path(const char *path, const char *board_type)
>> +static int brcm_alt_fw_paths(const char *path, const char *board_type,
>> + const char *alt_paths[BRCMF_FW_MAX_ALT_PATHS])> {
>> char alt_path[BRCMF_FW_NAME_LEN];
>> const char *suffix;
>>
>> + memset(alt_paths, 0, array_size(sizeof(*alt_paths),
>> + BRCMF_FW_MAX_ALT_PATHS));
> You don't need to use array_size() since size of a fixed array is
> already known.
>
> memset(alt_paths, 0, sizeof(alt_paths));
It's a function argument, so that doesn't work and actually throws a
warning. Array function argument notation is informative only; they
behave strictly equivalent to pointers. Try it:
$ cat test.c
#include <stdio.h>
void foo(char x[42])
{
printf("%ld\n", sizeof(x));
}
int main() {
char x[42];
foo(x);
}
$ gcc test.c
test.c: In function ‘foo’:
test.c:5:31: warning: ‘sizeof’ on array function parameter ‘x’ will
return size of ‘char *’ [-Wsizeof-array-argument]
5 | printf("%ld\n", sizeof(x));
| ^
test.c:3:15: note: declared here
3 | void foo(char x[42])
| ~~~~~^~~~~
$ ./a.out
8
>
> ...
>> +static void
>> +brcm_free_alt_fw_paths(const char *alt_paths[BRCMF_FW_MAX_ALT_PATHS])
>> +{
>> + unsigned int i;
>> +
>> + for (i = 0; alt_paths[i]; i++)
>
> What if array is fully populated and there is no null in the end? Please
> don't do this, use BRCMF_FW_MAX_ALT_PATHS or ARRAY_SIZE().
Argh, forgot to change this one. I used BRCMF_FW_MAX_ALT_PATHS
elsewhere; ARRAY_SIZE won't work as I explained above.
>
>> + kfree(alt_paths[i]);
>> }
>>
>> static int brcmf_fw_request_firmware(const struct firmware **fw,
>> @@ -617,19 +634,25 @@ static int brcmf_fw_request_firmware(const struct firmware **fw,
>> {
>> struct brcmf_fw_item *cur = &fwctx->req->items[fwctx->curpos];
>> int ret;
>> + unsigned int i;
>
> Keep reverse Xmas tree coding style.
First time I hear this one, heh. Sure.
>
> ...
>> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h
>> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.h
>> @@ -11,6 +11,8 @@
>>
>> #define BRCMF_FW_DEFAULT_PATH "brcm/"
>>
>> +#define BRCMF_FW_MAX_ALT_PATHS 8
>
> Two tabs are needed here.
Will do.
--
Hector Martin (marcan@marcan.st)
Public Key: https://mrcn.st/pub
next prev parent reply other threads:[~2022-01-04 8:44 UTC|newest]
Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-04 7:26 [PATCH v2 00/35] brcmfmac: Support Apple T2 and M1 platforms Hector Martin
2022-01-04 7:26 ` [PATCH v2 01/35] dt-bindings: net: bcm4329-fmac: Add Apple properties & chips Hector Martin
2022-01-11 18:45 ` Rob Herring
2022-01-04 7:26 ` [PATCH v2 02/35] brcmfmac: pcie: Declare missing firmware files in pcie.c Hector Martin
2022-01-06 9:56 ` Arend van Spriel
2022-01-06 11:10 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 03/35] brcmfmac: firmware: Handle per-board clm_blob files Hector Martin
2022-01-06 10:19 ` Arend van Spriel
2022-01-06 10:59 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 04/35] brcmfmac: firmware: Support having multiple alt paths Hector Martin
2022-01-04 8:26 ` Dmitry Osipenko
2022-01-04 8:43 ` Hector Martin [this message]
2022-01-04 22:09 ` Dmitry Osipenko
2022-01-05 13:22 ` Hector Martin
2022-01-06 17:40 ` Dmitry Osipenko
2022-01-06 17:58 ` Andy Shevchenko
2022-01-07 3:12 ` Dmitry Osipenko
2022-01-07 9:55 ` Andy Shevchenko
2022-01-04 22:36 ` Dmitry Osipenko
2022-01-04 22:38 ` Dmitry Osipenko
2022-01-06 10:43 ` Arend van Spriel
2022-01-06 11:12 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 05/35] brcmfmac: pcie/sdio/usb: Get CLM blob via standard firmware mechanism Hector Martin
2022-01-06 10:48 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 06/35] brcmfmac: firmware: Support passing in multiple board_types Hector Martin
2022-01-04 10:22 ` Arend van Spriel
2022-01-04 10:30 ` Hector Martin
2022-01-04 11:28 ` Andy Shevchenko
2022-01-07 2:50 ` Hector Martin
2022-01-06 12:16 ` Arend van Spriel
2022-01-07 4:02 ` Hector Martin
2022-01-07 6:17 ` Arend Van Spriel
2022-01-07 7:12 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 07/35] brcmfmac: pcie: Read Apple OTP information Hector Martin
2022-01-04 11:26 ` Andy Shevchenko
2022-01-07 3:53 ` Hector Martin
2022-01-06 12:37 ` Arend van Spriel
2022-01-06 13:08 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 08/35] brcmfmac: of: Fetch Apple properties Hector Martin
2022-01-04 11:17 ` Andy Shevchenko
2022-01-07 3:54 ` Hector Martin
2022-01-08 20:03 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 09/35] brcmfmac: pcie: Perform firmware selection for Apple platforms Hector Martin
2022-01-04 14:24 ` Andy Shevchenko
2022-01-06 13:12 ` Hector Martin
2022-01-08 20:03 ` Arend van Spriel
2022-01-17 6:36 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 10/35] brcmfmac: firmware: Allow platform to override macaddr Hector Martin
2022-01-04 14:23 ` Andy Shevchenko
2022-01-05 13:26 ` Hector Martin
2022-01-06 14:20 ` Andy Shevchenko
2022-01-07 2:39 ` Hector Martin
2022-01-08 20:14 ` Arend van Spriel
2022-01-17 6:38 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 11/35] brcmfmac: msgbuf: Increase RX ring sizes to 1024 Hector Martin
2022-01-10 7:17 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 12/35] brcmfmac: pcie: Fix crashes due to early IRQs Hector Martin
2022-01-04 14:12 ` Andy Shevchenko
2022-01-06 13:10 ` Hector Martin
2022-01-10 13:54 ` Kalle Valo
2022-01-10 7:19 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 13/35] brcmfmac: pcie: Support PCIe core revisions >= 64 Hector Martin
2022-01-10 7:31 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 14/35] brcmfmac: pcie: Add IDs/properties for BCM4378 Hector Martin
2022-01-10 9:10 ` Arend van Spriel
2022-01-10 11:04 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 15/35] ACPI / property: Support strings in Apple _DSM props Hector Martin
2022-01-04 7:26 ` [PATCH v2 16/35] brcmfmac: acpi: Add support for fetching Apple ACPI properties Hector Martin
2022-01-04 10:21 ` Arend van Spriel
2022-01-04 11:00 ` Hector Martin
2022-01-10 14:01 ` Kalle Valo
2022-01-10 9:11 ` Arend van Spriel
2022-01-10 11:07 ` Hector Martin
2022-01-10 11:26 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 17/35] brcmfmac: pcie: Provide a buffer of random bytes to the device Hector Martin
2022-01-10 9:11 ` Arend van Spriel
2022-01-10 11:09 ` Hector Martin
2022-01-10 11:28 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 18/35] brcmfmac: pcie: Add IDs/properties for BCM4355 Hector Martin
2022-01-10 9:12 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 19/35] brcmfmac: pcie: Add IDs/properties for BCM4377 Hector Martin
2022-01-10 9:12 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 20/35] brcmfmac: pcie: Perform correct BCM4364 firmware selection Hector Martin
2022-01-10 9:12 ` Arend van Spriel
2022-01-10 11:20 ` Hector Martin
2022-01-10 12:02 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 21/35] brcmfmac: chip: Only disable D11 cores; handle an arbitrary number Hector Martin
2022-01-19 12:36 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 22/35] brcmfmac: chip: Handle 1024-unit sizes for TCM blocks Hector Martin
2022-01-19 12:36 ` Arend van Spriel
2022-01-20 8:49 ` Arend van Spriel
2022-01-31 16:21 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 23/35] brcmfmac: cfg80211: Add support for scan params v2 Hector Martin
2022-01-04 19:46 ` Arend Van Spriel
2022-01-17 6:57 ` Hector Martin
2022-01-11 8:50 ` Arend van Spriel
2022-01-17 6:58 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 24/35] brcmfmac: feature: Add support for setting feats based on WLC version Hector Martin
2022-01-21 7:35 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 25/35] brcmfmac: cfg80211: Add support for PMKID_V3 operations Hector Martin
2022-01-21 7:35 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 26/35] brcmfmac: cfg80211: Pass the PMK in binary instead of hex Hector Martin
2022-01-21 7:35 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 27/35] brcmfmac: pcie: Add IDs/properties for BCM4387 Hector Martin
2022-01-21 7:35 ` Arend van Spriel
2022-01-31 16:37 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 28/35] brcmfmac: pcie: Replace brcmf_pcie_copy_mem_todev with memcpy_toio Hector Martin
2022-01-04 7:26 ` [PATCH v2 29/35] brcmfmac: pcie: Read the console on init and shutdown Hector Martin
2022-01-04 7:26 ` [PATCH v2 30/35] brcmfmac: pcie: Release firmwares in the brcmf_pcie_setup error path Hector Martin
2022-01-04 7:26 ` [PATCH v2 31/35] brcmfmac: firmware: Allocate space for default boardrev in nvram Hector Martin
2022-01-04 7:26 ` [PATCH v2 32/35] brcmfmac: fwil: Constify iovar name arguments Hector Martin
2022-01-04 7:26 ` [PATCH v2 33/35] brcmfmac: common: Add support for downloading TxCap blobs Hector Martin
2022-01-21 7:36 ` Arend van Spriel
2022-01-31 16:28 ` Hector Martin
2022-01-04 7:26 ` [PATCH v2 34/35] brcmfmac: pcie: Load and provide " Hector Martin
2022-01-21 7:36 ` Arend van Spriel
2022-01-04 7:26 ` [PATCH v2 35/35] brcmfmac: common: Add support for external calibration blobs Hector Martin
2022-01-21 7:35 ` Arend van Spriel
2022-01-04 14:28 ` [PATCH v2 00/35] brcmfmac: Support Apple T2 and M1 platforms Andy Shevchenko
2022-01-10 10:14 ` Kalle Valo
2022-01-10 11:21 ` Hector Martin
2022-01-10 13:46 ` Kalle Valo
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