From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Amit Pundir <amit.pundir@linaro.org>
Cc: Kalle Valo <kvalo@codeaurora.org>,
David S Miller <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Jeffrey Hugo <jeffrey.l.hugo@gmail.com>,
John Stultz <john.stultz@linaro.org>,
Sumit Semwal <sumit.semwal@linaro.org>,
Konrad Dybcio <konradybcio@gmail.com>,
ath10k@lists.infradead.org, devicetree@vger.kernel.org,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] ath10k: Introduce a devicetree quirk to skip host cap QMI requests
Date: Fri, 25 Sep 2020 17:00:39 -0700 [thread overview]
Message-ID: <20200926000039.GA2441@builder.lan> (raw)
In-Reply-To: <1601058581-19461-1-git-send-email-amit.pundir@linaro.org>
On Fri 25 Sep 11:29 PDT 2020, Amit Pundir wrote:
> There are firmware versions which do not support host capability
> QMI request. We suspect either the host cap is not implemented or
> there may be firmware specific issues, but apparently there seem
> to be a generation of firmware that has this particular behavior.
>
> For example, firmware build on Xiaomi Poco F1 (sdm845) phone:
> "QC_IMAGE_VERSION_STRING=WLAN.HL.2.0.c3-00257-QCAHLSWMTPLZ-1"
>
> If we do not skip the host cap QMI request on Poco F1, then we
> get a QMI_ERR_MALFORMED_MSG_V01 error message in the
> ath10k_qmi_host_cap_send_sync(). But this error message is not
> fatal to the firmware nor to the ath10k driver and we can still
> bring up the WiFi services successfully if we just ignore it.
>
> Hence introducing this DeviceTree quirk to skip host capability
> QMI request for the firmware versions which do not support this
> feature.
>
> Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
> ---
> .../devicetree/bindings/net/wireless/qcom,ath10k.txt | 5 +++++
> drivers/net/wireless/ath/ath10k/qmi.c | 13 ++++++++++---
> drivers/net/wireless/ath/ath10k/snoc.c | 3 +++
> drivers/net/wireless/ath/ath10k/snoc.h | 1 +
> 4 files changed, 19 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
> index 65ee68efd574..135c7ecd4487 100644
> --- a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
> +++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.txt
> @@ -86,6 +86,11 @@ Optional properties:
> Value type: <empty>
> Definition: Quirk specifying that the firmware expects the 8bit version
> of the host capability QMI request
> +- qcom,snoc-host-cap-skip-quirk:
> + Usage: Optional
> + Value type: <empty>
> + Definition: Quirk specifying that the firmware wants to skip the host
> + capability QMI request
> - qcom,xo-cal-data: xo cal offset to be configured in xo trim register.
>
> - qcom,msa-fixed-perm: Boolean context flag to disable SCM call for statically
> diff --git a/drivers/net/wireless/ath/ath10k/qmi.c b/drivers/net/wireless/ath/ath10k/qmi.c
> index 5468a41e928e..5adff7695e18 100644
> --- a/drivers/net/wireless/ath/ath10k/qmi.c
> +++ b/drivers/net/wireless/ath/ath10k/qmi.c
> @@ -770,6 +770,7 @@ ath10k_qmi_ind_register_send_sync_msg(struct ath10k_qmi *qmi)
> static void ath10k_qmi_event_server_arrive(struct ath10k_qmi *qmi)
> {
> struct ath10k *ar = qmi->ar;
> + struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
> int ret;
>
> ret = ath10k_qmi_ind_register_send_sync_msg(qmi);
> @@ -781,9 +782,15 @@ static void ath10k_qmi_event_server_arrive(struct ath10k_qmi *qmi)
> return;
> }
>
> - ret = ath10k_qmi_host_cap_send_sync(qmi);
> - if (ret)
> - return;
> + /*
> + * Skip the host capability request for the firmware versions which
> + * do not support this feature.
> + */
> + if (!test_bit(ATH10K_SNOC_FLAG_SKIP_HOST_CAP_QUIRK, &ar_snoc->flags)) {
Could have made this an early return inside
ath10k_qmi_host_cap_send_sync(), but this works.
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Regards,
Bjorn
> + ret = ath10k_qmi_host_cap_send_sync(qmi);
> + if (ret)
> + return;
> + }
>
> ret = ath10k_qmi_msa_mem_info_send_sync_msg(qmi);
> if (ret)
> diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
> index 354d49b1cd45..4efbf1339c80 100644
> --- a/drivers/net/wireless/ath/ath10k/snoc.c
> +++ b/drivers/net/wireless/ath/ath10k/snoc.c
> @@ -1281,6 +1281,9 @@ static void ath10k_snoc_quirks_init(struct ath10k *ar)
>
> if (of_property_read_bool(dev->of_node, "qcom,snoc-host-cap-8bit-quirk"))
> set_bit(ATH10K_SNOC_FLAG_8BIT_HOST_CAP_QUIRK, &ar_snoc->flags);
> +
> + if (of_property_read_bool(dev->of_node, "qcom,snoc-host-cap-skip-quirk"))
> + set_bit(ATH10K_SNOC_FLAG_SKIP_HOST_CAP_QUIRK, &ar_snoc->flags);
> }
>
> int ath10k_snoc_fw_indication(struct ath10k *ar, u64 type)
> diff --git a/drivers/net/wireless/ath/ath10k/snoc.h b/drivers/net/wireless/ath/ath10k/snoc.h
> index a3dd06f6ac62..2a0045f0af7e 100644
> --- a/drivers/net/wireless/ath/ath10k/snoc.h
> +++ b/drivers/net/wireless/ath/ath10k/snoc.h
> @@ -47,6 +47,7 @@ enum ath10k_snoc_flags {
> ATH10K_SNOC_FLAG_UNREGISTERING,
> ATH10K_SNOC_FLAG_RECOVERY,
> ATH10K_SNOC_FLAG_8BIT_HOST_CAP_QUIRK,
> + ATH10K_SNOC_FLAG_SKIP_HOST_CAP_QUIRK,
> };
>
> struct clk_bulk_data;
> --
> 2.7.4
>
next prev parent reply other threads:[~2020-09-26 0:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-25 18:29 [PATCH] ath10k: Introduce a devicetree quirk to skip host cap QMI requests Amit Pundir
2020-09-26 0:00 ` Bjorn Andersson [this message]
2020-09-29 19:08 ` Rob Herring
2020-09-30 11:09 ` Amit Pundir
2020-10-29 13:40 ` Bjorn Andersson
2020-11-03 7:48 ` Amit Pundir
2020-11-24 17:51 ` Bjorn Andersson
2020-12-07 16:55 ` Kalle Valo
2021-02-02 11:11 ` Amit Pundir
2021-02-08 17:21 ` Kalle Valo
2021-02-08 17:48 ` Bjorn Andersson
2021-02-09 8:10 ` Kalle Valo
2021-05-20 11:47 ` Amit Pundir
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200926000039.GA2441@builder.lan \
--to=bjorn.andersson@linaro.org \
--cc=amit.pundir@linaro.org \
--cc=ath10k@lists.infradead.org \
--cc=davem@davemloft.net \
--cc=devicetree@vger.kernel.org \
--cc=jeffrey.l.hugo@gmail.com \
--cc=john.stultz@linaro.org \
--cc=konradybcio@gmail.com \
--cc=kuba@kernel.org \
--cc=kvalo@codeaurora.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-wireless@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=robh+dt@kernel.org \
--cc=sumit.semwal@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).