| Message ID | 20210922233341.182624-1-swboyd@chromium.org (mailing list archive) |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | [v3] ath10k: Don't always treat modem stop events as crashes | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Not a local patch |
> -----Original Message----- > From: Stephen Boyd <swboyd@chromium.org> > Sent: Thursday, September 23, 2021 5:04 AM > To: Kalle Valo <kvalo@codeaurora.org> > Cc: linux-kernel@vger.kernel.org; ath10k@lists.infradead.org; linux- > wireless@vger.kernel.org; netdev@vger.kernel.org; linux-arm- > msm@vger.kernel.org; Youghandhar Chintala <youghand@codeaurora.org>; > Abhishek Kumar <kuabhs@chromium.org>; Steev Klimaszewski > <steev@kali.org>; Matthias Kaehlcke <mka@chromium.org>; Rakesh Pillai > <pillair@codeaurora.org> > Subject: [PATCH v3] ath10k: Don't always treat modem stop events as > crashes > > When rebooting on sc7180 Trogdor devices I see the following crash from the > wifi driver. > > ath10k_snoc 18800000.wifi: firmware crashed! (guid 83493570-29a2-4e98- > a83e-70048c47669c) > > This is because a modem stop event looks just like a firmware crash to the > driver, the qmi connection is closed in both cases. Use the qcom ssr notifier > block to stop treating the qmi connection close event as a firmware crash > signal when the modem hasn't actually crashed. See > ath10k_qmi_event_server_exit() for more details. > > This silences the crash message seen during every reboot. > > Fixes: 3f14b73c3843 ("ath10k: Enable MSA region dump support for > WCN3990") > Cc: Youghandhar Chintala <youghand@codeaurora.org> > Cc: Abhishek Kumar <kuabhs@chromium.org> > Cc: Steev Klimaszewski <steev@kali.org> > Cc: Matthias Kaehlcke <mka@chromium.org> > Cc: Rakesh Pillai <pillair@codeaurora.org> > Signed-off-by: Stephen Boyd <swboyd@chromium.org> > --- > > Changes since v2 (https://lore.kernel.org/r/20210913205313.3420049-1- > swboyd@chromium.org): > * Use a new bit instead of overloading unregistering > > Changes since v1 (https://lore.kernel.org/r/20210905210400.1157870-1- > swboyd@chromium.org): > * Push error message into function instead of checking at callsite > > drivers/net/wireless/ath/ath10k/qmi.c | 3 +- > drivers/net/wireless/ath/ath10k/snoc.c | 77 > ++++++++++++++++++++++++++ drivers/net/wireless/ath/ath10k/snoc.h | > 5 ++ > 3 files changed, 84 insertions(+), 1 deletion(-) Reviewed-by: Rakesh Pillai <pillair@codeaurora.org> > > diff --git a/drivers/net/wireless/ath/ath10k/qmi.c > b/drivers/net/wireless/ath/ath10k/qmi.c > index 07e478f9a808..80fcb917fe4e 100644 > --- a/drivers/net/wireless/ath/ath10k/qmi.c > +++ b/drivers/net/wireless/ath/ath10k/qmi.c > @@ -864,7 +864,8 @@ static void ath10k_qmi_event_server_exit(struct > ath10k_qmi *qmi) > > ath10k_qmi_remove_msa_permission(qmi); > ath10k_core_free_board_files(ar); > - if (!test_bit(ATH10K_SNOC_FLAG_UNREGISTERING, &ar_snoc- > >flags)) > + if (!test_bit(ATH10K_SNOC_FLAG_UNREGISTERING, &ar_snoc- > >flags) && > + !test_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc- > >flags)) > ath10k_snoc_fw_crashed_dump(ar); > > ath10k_snoc_fw_indication(ar, > ATH10K_QMI_EVENT_FW_DOWN_IND); diff --git > a/drivers/net/wireless/ath/ath10k/snoc.c > b/drivers/net/wireless/ath/ath10k/snoc.c > index ea00fbb15601..9513ab696fff 100644 > --- a/drivers/net/wireless/ath/ath10k/snoc.c > +++ b/drivers/net/wireless/ath/ath10k/snoc.c > @@ -12,6 +12,7 @@ > #include <linux/platform_device.h> > #include <linux/property.h> > #include <linux/regulator/consumer.h> > +#include <linux/remoteproc/qcom_rproc.h> > #include <linux/of_address.h> > #include <linux/iommu.h> > > @@ -1477,6 +1478,74 @@ void ath10k_snoc_fw_crashed_dump(struct > ath10k *ar) > mutex_unlock(&ar->dump_mutex); > } > > +static int ath10k_snoc_modem_notify(struct notifier_block *nb, unsigned > long action, > + void *data) > +{ > + struct ath10k_snoc *ar_snoc = container_of(nb, struct ath10k_snoc, > nb); > + struct ath10k *ar = ar_snoc->ar; > + struct qcom_ssr_notify_data *notify_data = data; > + > + switch (action) { > + case QCOM_SSR_BEFORE_POWERUP: > + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem > starting event\n"); > + clear_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, > &ar_snoc->flags); > + break; > + > + case QCOM_SSR_AFTER_POWERUP: > + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem > running event\n"); > + break; > + > + case QCOM_SSR_BEFORE_SHUTDOWN: > + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem %s > event\n", > + notify_data->crashed ? "crashed" : "stopping"); > + if (!notify_data->crashed) > + set_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, > &ar_snoc->flags); > + else > + clear_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, > &ar_snoc->flags); > + break; > + > + case QCOM_SSR_AFTER_SHUTDOWN: > + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem > offline event\n"); > + break; > + > + default: > + ath10k_err(ar, "received unrecognized event %lu\n", action); > + break; > + } > + > + return NOTIFY_OK; > +} > + > +static int ath10k_modem_init(struct ath10k *ar) { > + struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar); > + void *notifier; > + int ret; > + > + ar_snoc->nb.notifier_call = ath10k_snoc_modem_notify; > + > + notifier = qcom_register_ssr_notifier("mpss", &ar_snoc->nb); > + if (IS_ERR(notifier)) { > + ret = PTR_ERR(notifier); > + ath10k_err(ar, "failed to initialize modem notifier: %d\n", > ret); > + return ret; > + } > + > + ar_snoc->notifier = notifier; > + > + return 0; > +} > + > +static void ath10k_modem_deinit(struct ath10k *ar) { > + int ret; > + struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar); > + > + ret = qcom_unregister_ssr_notifier(ar_snoc->notifier, &ar_snoc- > >nb); > + if (ret) > + ath10k_err(ar, "error %d unregistering notifier\n", ret); } > + > static int ath10k_setup_msa_resources(struct ath10k *ar, u32 msa_size) { > struct device *dev = ar->dev; > @@ -1740,10 +1809,17 @@ static int ath10k_snoc_probe(struct > platform_device *pdev) > goto err_fw_deinit; > } > > + ret = ath10k_modem_init(ar); > + if (ret) > + goto err_qmi_deinit; > + > ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc probe\n"); > > return 0; > > +err_qmi_deinit: > + ath10k_qmi_deinit(ar); > + > err_fw_deinit: > ath10k_fw_deinit(ar); > > @@ -1771,6 +1847,7 @@ static int ath10k_snoc_free_resources(struct > ath10k *ar) > ath10k_fw_deinit(ar); > ath10k_snoc_free_irq(ar); > ath10k_snoc_release_resource(ar); > + ath10k_modem_deinit(ar); > ath10k_qmi_deinit(ar); > ath10k_core_destroy(ar); > > diff --git a/drivers/net/wireless/ath/ath10k/snoc.h > b/drivers/net/wireless/ath/ath10k/snoc.h > index 5095d1893681..d4bce1707696 100644 > --- a/drivers/net/wireless/ath/ath10k/snoc.h > +++ b/drivers/net/wireless/ath/ath10k/snoc.h > @@ -6,6 +6,8 @@ > #ifndef _SNOC_H_ > #define _SNOC_H_ > > +#include <linux/notifier.h> > + > #include "hw.h" > #include "ce.h" > #include "qmi.h" > @@ -45,6 +47,7 @@ struct ath10k_snoc_ce_irq { enum ath10k_snoc_flags { > ATH10K_SNOC_FLAG_REGISTERED, > ATH10K_SNOC_FLAG_UNREGISTERING, > + ATH10K_SNOC_FLAG_MODEM_STOPPED, > ATH10K_SNOC_FLAG_RECOVERY, > ATH10K_SNOC_FLAG_8BIT_HOST_CAP_QUIRK, > }; > @@ -75,6 +78,8 @@ struct ath10k_snoc { > struct clk_bulk_data *clks; > size_t num_clks; > struct ath10k_qmi *qmi; > + struct notifier_block nb; > + void *notifier; > unsigned long flags; > bool xo_cal_supported; > u32 xo_cal_data; > > base-commit: e4e737bb5c170df6135a127739a9e6148ee3da82 > -- > https://chromeos.dev
I pulled the latest patch changes and tested them on SC7180. Which works as expected. Do not see this error message during reboot and can be seen while doing SSR. Tested-By: Youghandhar Chintala <youghand@codeaurora.org> On 2021-09-23 05:03, Stephen Boyd wrote: > When rebooting on sc7180 Trogdor devices I see the following crash from > the wifi driver. > > ath10k_snoc 18800000.wifi: firmware crashed! (guid > 83493570-29a2-4e98-a83e-70048c47669c) > > This is because a modem stop event looks just like a firmware crash to > the driver, the qmi connection is closed in both cases. Use the qcom > ssr > notifier block to stop treating the qmi connection close event as a > firmware crash signal when the modem hasn't actually crashed. See > ath10k_qmi_event_server_exit() for more details. > > This silences the crash message seen during every reboot. > > Fixes: 3f14b73c3843 ("ath10k: Enable MSA region dump support for > WCN3990") > Cc: Youghandhar Chintala <youghand@codeaurora.org> > Cc: Abhishek Kumar <kuabhs@chromium.org> > Cc: Steev Klimaszewski <steev@kali.org> > Cc: Matthias Kaehlcke <mka@chromium.org> > Cc: Rakesh Pillai <pillair@codeaurora.org> > Signed-off-by: Stephen Boyd <swboyd@chromium.org> > --- > > Changes since v2 > (https://lore.kernel.org/r/20210913205313.3420049-1-swboyd@chromium.org): > * Use a new bit instead of overloading unregistering > > Changes since v1 > (https://lore.kernel.org/r/20210905210400.1157870-1-swboyd@chromium.org): > * Push error message into function instead of checking at callsite > > drivers/net/wireless/ath/ath10k/qmi.c | 3 +- > drivers/net/wireless/ath/ath10k/snoc.c | 77 ++++++++++++++++++++++++++ > drivers/net/wireless/ath/ath10k/snoc.h | 5 ++ > 3 files changed, 84 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/ath/ath10k/qmi.c > b/drivers/net/wireless/ath/ath10k/qmi.c > index 07e478f9a808..80fcb917fe4e 100644 > --- a/drivers/net/wireless/ath/ath10k/qmi.c > +++ b/drivers/net/wireless/ath/ath10k/qmi.c > @@ -864,7 +864,8 @@ static void ath10k_qmi_event_server_exit(struct > ath10k_qmi *qmi) > > ath10k_qmi_remove_msa_permission(qmi); > ath10k_core_free_board_files(ar); > - if (!test_bit(ATH10K_SNOC_FLAG_UNREGISTERING, &ar_snoc->flags)) > + if (!test_bit(ATH10K_SNOC_FLAG_UNREGISTERING, &ar_snoc->flags) && > + !test_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags)) > ath10k_snoc_fw_crashed_dump(ar); > > ath10k_snoc_fw_indication(ar, ATH10K_QMI_EVENT_FW_DOWN_IND); > diff --git a/drivers/net/wireless/ath/ath10k/snoc.c > b/drivers/net/wireless/ath/ath10k/snoc.c > index ea00fbb15601..9513ab696fff 100644 > --- a/drivers/net/wireless/ath/ath10k/snoc.c > +++ b/drivers/net/wireless/ath/ath10k/snoc.c > @@ -12,6 +12,7 @@ > #include <linux/platform_device.h> > #include <linux/property.h> > #include <linux/regulator/consumer.h> > +#include <linux/remoteproc/qcom_rproc.h> > #include <linux/of_address.h> > #include <linux/iommu.h> > > @@ -1477,6 +1478,74 @@ void ath10k_snoc_fw_crashed_dump(struct ath10k > *ar) > mutex_unlock(&ar->dump_mutex); > } > > +static int ath10k_snoc_modem_notify(struct notifier_block *nb, > unsigned long action, > + void *data) > +{ > + struct ath10k_snoc *ar_snoc = container_of(nb, struct ath10k_snoc, > nb); > + struct ath10k *ar = ar_snoc->ar; > + struct qcom_ssr_notify_data *notify_data = data; > + > + switch (action) { > + case QCOM_SSR_BEFORE_POWERUP: > + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem starting event\n"); > + clear_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags); > + break; > + > + case QCOM_SSR_AFTER_POWERUP: > + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem running event\n"); > + break; > + > + case QCOM_SSR_BEFORE_SHUTDOWN: > + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem %s event\n", > + notify_data->crashed ? "crashed" : "stopping"); > + if (!notify_data->crashed) > + set_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags); > + else > + clear_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags); > + break; > + > + case QCOM_SSR_AFTER_SHUTDOWN: > + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem offline event\n"); > + break; > + > + default: > + ath10k_err(ar, "received unrecognized event %lu\n", action); > + break; > + } > + > + return NOTIFY_OK; > +} > + > +static int ath10k_modem_init(struct ath10k *ar) > +{ > + struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar); > + void *notifier; > + int ret; > + > + ar_snoc->nb.notifier_call = ath10k_snoc_modem_notify; > + > + notifier = qcom_register_ssr_notifier("mpss", &ar_snoc->nb); > + if (IS_ERR(notifier)) { > + ret = PTR_ERR(notifier); > + ath10k_err(ar, "failed to initialize modem notifier: %d\n", ret); > + return ret; > + } > + > + ar_snoc->notifier = notifier; > + > + return 0; > +} > + > +static void ath10k_modem_deinit(struct ath10k *ar) > +{ > + int ret; > + struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar); > + > + ret = qcom_unregister_ssr_notifier(ar_snoc->notifier, &ar_snoc->nb); > + if (ret) > + ath10k_err(ar, "error %d unregistering notifier\n", ret); > +} > + > static int ath10k_setup_msa_resources(struct ath10k *ar, u32 msa_size) > { > struct device *dev = ar->dev; > @@ -1740,10 +1809,17 @@ static int ath10k_snoc_probe(struct > platform_device *pdev) > goto err_fw_deinit; > } > > + ret = ath10k_modem_init(ar); > + if (ret) > + goto err_qmi_deinit; > + > ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc probe\n"); > > return 0; > > +err_qmi_deinit: > + ath10k_qmi_deinit(ar); > + > err_fw_deinit: > ath10k_fw_deinit(ar); > > @@ -1771,6 +1847,7 @@ static int ath10k_snoc_free_resources(struct > ath10k *ar) > ath10k_fw_deinit(ar); > ath10k_snoc_free_irq(ar); > ath10k_snoc_release_resource(ar); > + ath10k_modem_deinit(ar); > ath10k_qmi_deinit(ar); > ath10k_core_destroy(ar); > > diff --git a/drivers/net/wireless/ath/ath10k/snoc.h > b/drivers/net/wireless/ath/ath10k/snoc.h > index 5095d1893681..d4bce1707696 100644 > --- a/drivers/net/wireless/ath/ath10k/snoc.h > +++ b/drivers/net/wireless/ath/ath10k/snoc.h > @@ -6,6 +6,8 @@ > #ifndef _SNOC_H_ > #define _SNOC_H_ > > +#include <linux/notifier.h> > + > #include "hw.h" > #include "ce.h" > #include "qmi.h" > @@ -45,6 +47,7 @@ struct ath10k_snoc_ce_irq { > enum ath10k_snoc_flags { > ATH10K_SNOC_FLAG_REGISTERED, > ATH10K_SNOC_FLAG_UNREGISTERING, > + ATH10K_SNOC_FLAG_MODEM_STOPPED, > ATH10K_SNOC_FLAG_RECOVERY, > ATH10K_SNOC_FLAG_8BIT_HOST_CAP_QUIRK, > }; > @@ -75,6 +78,8 @@ struct ath10k_snoc { > struct clk_bulk_data *clks; > size_t num_clks; > struct ath10k_qmi *qmi; > + struct notifier_block nb; > + void *notifier; > unsigned long flags; > bool xo_cal_supported; > u32 xo_cal_data; > > base-commit: e4e737bb5c170df6135a127739a9e6148ee3da82 Regards, Youghandhar
Youghandhar Chintala <youghand@codeaurora.org> writes: > I pulled the latest patch changes and tested them on SC7180. Which > works as expected. > Do not see this error message during reboot and can be seen while > doing SSR. > > Tested-By: Youghandhar Chintala <youghand@codeaurora.org> Thanks for testing. But this style of replies makes it hard to use patchwork: https://patchwork.kernel.org/project/linux-wireless/patch/20210922233341.182624-1-swboyd@chromium.org/ So please do not top post and always edit your quotes, thank you, Same request also to Rakesh.
Stephen Boyd <swboyd@chromium.org> wrote: > When rebooting on sc7180 Trogdor devices I see the following crash from > the wifi driver. > > ath10k_snoc 18800000.wifi: firmware crashed! (guid 83493570-29a2-4e98-a83e-70048c47669c) > > This is because a modem stop event looks just like a firmware crash to > the driver, the qmi connection is closed in both cases. Use the qcom ssr > notifier block to stop treating the qmi connection close event as a > firmware crash signal when the modem hasn't actually crashed. See > ath10k_qmi_event_server_exit() for more details. > > This silences the crash message seen during every reboot. > > Fixes: 3f14b73c3843 ("ath10k: Enable MSA region dump support for WCN3990") > Cc: Youghandhar Chintala <youghand@codeaurora.org> > Cc: Abhishek Kumar <kuabhs@chromium.org> > Cc: Steev Klimaszewski <steev@kali.org> > Cc: Matthias Kaehlcke <mka@chromium.org> > Cc: Rakesh Pillai <pillair@codeaurora.org> > Signed-off-by: Stephen Boyd <swboyd@chromium.org> > Reviewed-by: Rakesh Pillai <pillair@codeaurora.org> > Tested-By: Youghandhar Chintala <youghand@codeaurora.org> > Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Patch applied to ath-next branch of ath.git, thanks. 747ff7d3d742 ath10k: Don't always treat modem stop events as crashes
diff --git a/drivers/net/wireless/ath/ath10k/qmi.c b/drivers/net/wireless/ath/ath10k/qmi.c index 07e478f9a808..80fcb917fe4e 100644 --- a/drivers/net/wireless/ath/ath10k/qmi.c +++ b/drivers/net/wireless/ath/ath10k/qmi.c @@ -864,7 +864,8 @@ static void ath10k_qmi_event_server_exit(struct ath10k_qmi *qmi) ath10k_qmi_remove_msa_permission(qmi); ath10k_core_free_board_files(ar); - if (!test_bit(ATH10K_SNOC_FLAG_UNREGISTERING, &ar_snoc->flags)) + if (!test_bit(ATH10K_SNOC_FLAG_UNREGISTERING, &ar_snoc->flags) && + !test_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags)) ath10k_snoc_fw_crashed_dump(ar); ath10k_snoc_fw_indication(ar, ATH10K_QMI_EVENT_FW_DOWN_IND); diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c index ea00fbb15601..9513ab696fff 100644 --- a/drivers/net/wireless/ath/ath10k/snoc.c +++ b/drivers/net/wireless/ath/ath10k/snoc.c @@ -12,6 +12,7 @@ #include <linux/platform_device.h> #include <linux/property.h> #include <linux/regulator/consumer.h> +#include <linux/remoteproc/qcom_rproc.h> #include <linux/of_address.h> #include <linux/iommu.h> @@ -1477,6 +1478,74 @@ void ath10k_snoc_fw_crashed_dump(struct ath10k *ar) mutex_unlock(&ar->dump_mutex); } +static int ath10k_snoc_modem_notify(struct notifier_block *nb, unsigned long action, + void *data) +{ + struct ath10k_snoc *ar_snoc = container_of(nb, struct ath10k_snoc, nb); + struct ath10k *ar = ar_snoc->ar; + struct qcom_ssr_notify_data *notify_data = data; + + switch (action) { + case QCOM_SSR_BEFORE_POWERUP: + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem starting event\n"); + clear_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags); + break; + + case QCOM_SSR_AFTER_POWERUP: + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem running event\n"); + break; + + case QCOM_SSR_BEFORE_SHUTDOWN: + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem %s event\n", + notify_data->crashed ? "crashed" : "stopping"); + if (!notify_data->crashed) + set_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags); + else + clear_bit(ATH10K_SNOC_FLAG_MODEM_STOPPED, &ar_snoc->flags); + break; + + case QCOM_SSR_AFTER_SHUTDOWN: + ath10k_dbg(ar, ATH10K_DBG_SNOC, "received modem offline event\n"); + break; + + default: + ath10k_err(ar, "received unrecognized event %lu\n", action); + break; + } + + return NOTIFY_OK; +} + +static int ath10k_modem_init(struct ath10k *ar) +{ + struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar); + void *notifier; + int ret; + + ar_snoc->nb.notifier_call = ath10k_snoc_modem_notify; + + notifier = qcom_register_ssr_notifier("mpss", &ar_snoc->nb); + if (IS_ERR(notifier)) { + ret = PTR_ERR(notifier); + ath10k_err(ar, "failed to initialize modem notifier: %d\n", ret); + return ret; + } + + ar_snoc->notifier = notifier; + + return 0; +} + +static void ath10k_modem_deinit(struct ath10k *ar) +{ + int ret; + struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar); + + ret = qcom_unregister_ssr_notifier(ar_snoc->notifier, &ar_snoc->nb); + if (ret) + ath10k_err(ar, "error %d unregistering notifier\n", ret); +} + static int ath10k_setup_msa_resources(struct ath10k *ar, u32 msa_size) { struct device *dev = ar->dev; @@ -1740,10 +1809,17 @@ static int ath10k_snoc_probe(struct platform_device *pdev) goto err_fw_deinit; } + ret = ath10k_modem_init(ar); + if (ret) + goto err_qmi_deinit; + ath10k_dbg(ar, ATH10K_DBG_SNOC, "snoc probe\n"); return 0; +err_qmi_deinit: + ath10k_qmi_deinit(ar); + err_fw_deinit: ath10k_fw_deinit(ar); @@ -1771,6 +1847,7 @@ static int ath10k_snoc_free_resources(struct ath10k *ar) ath10k_fw_deinit(ar); ath10k_snoc_free_irq(ar); ath10k_snoc_release_resource(ar); + ath10k_modem_deinit(ar); ath10k_qmi_deinit(ar); ath10k_core_destroy(ar); diff --git a/drivers/net/wireless/ath/ath10k/snoc.h b/drivers/net/wireless/ath/ath10k/snoc.h index 5095d1893681..d4bce1707696 100644 --- a/drivers/net/wireless/ath/ath10k/snoc.h +++ b/drivers/net/wireless/ath/ath10k/snoc.h @@ -6,6 +6,8 @@ #ifndef _SNOC_H_ #define _SNOC_H_ +#include <linux/notifier.h> + #include "hw.h" #include "ce.h" #include "qmi.h" @@ -45,6 +47,7 @@ struct ath10k_snoc_ce_irq { enum ath10k_snoc_flags { ATH10K_SNOC_FLAG_REGISTERED, ATH10K_SNOC_FLAG_UNREGISTERING, + ATH10K_SNOC_FLAG_MODEM_STOPPED, ATH10K_SNOC_FLAG_RECOVERY, ATH10K_SNOC_FLAG_8BIT_HOST_CAP_QUIRK, }; @@ -75,6 +78,8 @@ struct ath10k_snoc { struct clk_bulk_data *clks; size_t num_clks; struct ath10k_qmi *qmi; + struct notifier_block nb; + void *notifier; unsigned long flags; bool xo_cal_supported; u32 xo_cal_data;
When rebooting on sc7180 Trogdor devices I see the following crash from the wifi driver. ath10k_snoc 18800000.wifi: firmware crashed! (guid 83493570-29a2-4e98-a83e-70048c47669c) This is because a modem stop event looks just like a firmware crash to the driver, the qmi connection is closed in both cases. Use the qcom ssr notifier block to stop treating the qmi connection close event as a firmware crash signal when the modem hasn't actually crashed. See ath10k_qmi_event_server_exit() for more details. This silences the crash message seen during every reboot. Fixes: 3f14b73c3843 ("ath10k: Enable MSA region dump support for WCN3990") Cc: Youghandhar Chintala <youghand@codeaurora.org> Cc: Abhishek Kumar <kuabhs@chromium.org> Cc: Steev Klimaszewski <steev@kali.org> Cc: Matthias Kaehlcke <mka@chromium.org> Cc: Rakesh Pillai <pillair@codeaurora.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> --- Changes since v2 (https://lore.kernel.org/r/20210913205313.3420049-1-swboyd@chromium.org): * Use a new bit instead of overloading unregistering Changes since v1 (https://lore.kernel.org/r/20210905210400.1157870-1-swboyd@chromium.org): * Push error message into function instead of checking at callsite drivers/net/wireless/ath/ath10k/qmi.c | 3 +- drivers/net/wireless/ath/ath10k/snoc.c | 77 ++++++++++++++++++++++++++ drivers/net/wireless/ath/ath10k/snoc.h | 5 ++ 3 files changed, 84 insertions(+), 1 deletion(-) base-commit: e4e737bb5c170df6135a127739a9e6148ee3da82