Received-SPF: pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <3bf28d29-f841-81f7-68f8-3fb7f9c274bf@kali.org>
Date:   Sat, 14 May 2022 13:09:11 -0500
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0)
 Gecko/20100101 Thunderbird/91.9.0
Subject: Re: [PATCH] ath10k: do not enforce interrupt trigger type
Content-Language: en-US
From:   Steev Klimaszewski <steev@kali.org>
To:     Kalle Valo <kvalo@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc:     "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Govind Singh <govinds@codeaurora.org>,
        ath10k@lists.infradead.org, linux-wireless@vger.kernel.org,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        linux-arm-msm@vger.kernel.org
References: <20220513151516.357549-1-krzysztof.kozlowski@linaro.org>
 <87zgjl4e8t.fsf@kernel.org> <3d856d44-a2d6-b5b8-ec78-ce19a3686986@kali.org>
In-Reply-To: <3d856d44-a2d6-b5b8-ec78-ce19a3686986@kali.org>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Precedence: bulk


On 5/14/22 12:05 AM, Steev Klimaszewski wrote:
>
> On 5/13/22 10:57 AM, Kalle Valo wrote:
>> Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> writes:
>>
>>> Interrupt line can be configured on different hardware in different 
>>> way,
>>> even inverted.  Therefore driver should not enforce specific trigger
>>> type - edge rising - but instead rely on Devicetree to configure it.
>>>
>>> All Qualcomm DTSI with WCN3990 define the interrupt type as level high,
>>> so the mismatch between DTSI and driver causes rebind issues:
>>>
>>>    $ echo 18800000.wifi > /sys/bus/platform/drivers/ath10k_snoc/unbind
>>>    $ echo 18800000.wifi > /sys/bus/platform/drivers/ath10k_snoc/bind
>>>    [   44.763114] irq: type mismatch, failed to map hwirq-446 for 
>>> interrupt-controller@17a00000!
>>>    [   44.763130] ath10k_snoc 18800000.wifi: error -ENXIO: IRQ index 
>>> 0 not found
>>>    [   44.763140] ath10k_snoc 18800000.wifi: failed to initialize 
>>> resource: -6
>> So you tested on WCN3990? On what firmware version? I can add the
>> Tested-on tag if you provide that.
>>
> Hello Krzystof, Kalle,
>
> I have seen this issue as well on a Lenovo Flex 5G, which has a WCN3990:
>
> wcn3990 hw1.0 target 0x00000008 chip_id 0x00000000 sub 0000:0000
> kconfig debug 0 debugfs 0 tracing 0 dfs 0 testmode 0
> firmware ver  api 5 features wowlan,mgmt-tx-by-reference,non-bmi crc32 
> b3d4b790
> htt-ver 3.86 wmi-op 4 htt-op 3 cal file max-sta 32 raw 0 hwcrypto 1
>
> With this patch applied, I no longer see the error message in the 
> commit message, when I unbind/bind when wifi stops working.
>
> Tested-by: Steev Klimaszewski <steev@kali.org>
>
> -- Steev
>
Apologies for the second email - I've tested this now on both the Lenovo 
Flex 5G, as I have seen the issue on it as well, as well as on the 
Lenovo Yoga C630, where I did not but I did have issues with attempting 
to rebind the device, prior to this patch.

Firmware version for the Flex 5G is

qmi chip_id 0x30224 chip_family 0x4001 board_id 0xff soc_id 0x40060000
qmi fw_version 0x32080009 fw_build_timestamp 2020-11-16 14:44 
fw_build_id 
QC_IMAGE_VERSION_STRING=WLAN.HL.3.2.0.c8-00009-QCAHLSWSC8180XMTPLZ-1

Firmware version on the Yoga C630 is

qmi chip_id 0x30214 chip_family 0x4001 board_id 0xff soc_id 0x40030001
qmi fw_version 0x2009856b fw_build_timestamp 2018-07-19 12:28 
fw_build_id QC_IMAGE_VERSION_STRING=WLAN.HL.2.0-01387-QCAHLSWMTPLZ-1