| Message ID | 20240412060620.27519-2-quic_bqiang@quicinc.com |
|---|---|
| State | New |
| Headers | show |
| Series | wifi: ath12k: support suspend/resume | expand |
On 4/11/2024 11:06 PM, Baochen Qiang wrote: > For non-WoW suspend/resume, ath12k host powers down whole hardware > when suspend and powers up it when resume, the code path it goes > through is very like the ath12k reset logic. > > In order to reuse that logic, rearrange IRQ handling in the reset > path. > > Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4 > Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 > > Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com> > --- > drivers/net/wireless/ath/ath12k/core.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c > index 3c522a4b3e9b..28663cf4db30 100644 > --- a/drivers/net/wireless/ath/ath12k/core.c > +++ b/drivers/net/wireless/ath/ath12k/core.c > @@ -879,9 +879,8 @@ static int ath12k_core_reconfigure_on_crash(struct ath12k_base *ab) > int ret; > > mutex_lock(&ab->core_lock); > - ath12k_hif_irq_disable(ab); > ath12k_dp_pdev_free(ab); > - ath12k_hif_stop(ab); > + ath12k_ce_cleanup_pipes(ab); > ath12k_wmi_detach(ab); > ath12k_dp_rx_pdev_reo_cleanup(ab); > mutex_unlock(&ab->core_lock); > @@ -1136,6 +1135,9 @@ static void ath12k_core_reset(struct work_struct *work) > time_left = wait_for_completion_timeout(&ab->recovery_start, > ATH12K_RECOVER_START_TIMEOUT_HZ); > > + ath12k_hif_irq_disable(ab); > + ath12k_hif_ce_irq_disable(ab); > + This core reset is called due to a fatal error. In case of an unlikely scenario, when there are consecutive fatal errors notification before the first fatal error is handled, then we will be disabling same irqs again. Shall we have a check here to see if ab's already in reset using ab->is_reset. > ath12k_hif_power_down(ab); > ath12k_qmi_free_resource(ab); > ath12k_hif_power_up(ab);
On 4/13/2024 2:24 AM, Sidhanta Sahu wrote: > > > On 4/11/2024 11:06 PM, Baochen Qiang wrote: >> For non-WoW suspend/resume, ath12k host powers down whole hardware >> when suspend and powers up it when resume, the code path it goes >> through is very like the ath12k reset logic. >> >> In order to reuse that logic, rearrange IRQ handling in the reset >> path. >> >> Tested-on: WCN7850 hw2.0 PCI >> WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4 >> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 >> >> Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com> >> --- >> drivers/net/wireless/ath/ath12k/core.c | 6 ++++-- >> 1 file changed, 4 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/net/wireless/ath/ath12k/core.c >> b/drivers/net/wireless/ath/ath12k/core.c >> index 3c522a4b3e9b..28663cf4db30 100644 >> --- a/drivers/net/wireless/ath/ath12k/core.c >> +++ b/drivers/net/wireless/ath/ath12k/core.c >> @@ -879,9 +879,8 @@ static int >> ath12k_core_reconfigure_on_crash(struct ath12k_base *ab) >> int ret; >> mutex_lock(&ab->core_lock); >> - ath12k_hif_irq_disable(ab); >> ath12k_dp_pdev_free(ab); >> - ath12k_hif_stop(ab); >> + ath12k_ce_cleanup_pipes(ab); >> ath12k_wmi_detach(ab); >> ath12k_dp_rx_pdev_reo_cleanup(ab); >> mutex_unlock(&ab->core_lock); >> @@ -1136,6 +1135,9 @@ static void ath12k_core_reset(struct >> work_struct *work) >> time_left = wait_for_completion_timeout(&ab->recovery_start, >> ATH12K_RECOVER_START_TIMEOUT_HZ); >> + ath12k_hif_irq_disable(ab); >> + ath12k_hif_ce_irq_disable(ab); >> + > > This core reset is called due to a fatal error. In case of an unlikely > scenario, when there are consecutive fatal errors notification before > the first fatal error is handled, then we will be disabling same irqs > again. Shall we have a check here to see if ab's already in reset > using ab->is_reset. There is similar logic using ab->reset_count in ath12k_core_reset(). > >> ath12k_hif_power_down(ab); >> ath12k_qmi_free_resource(ab); >> ath12k_hif_power_up(ab);
On 4/11/2024 11:06 PM, Baochen Qiang wrote: > For non-WoW suspend/resume, ath12k host powers down whole hardware > when suspend and powers up it when resume, the code path it goes > through is very like the ath12k reset logic. > > In order to reuse that logic, rearrange IRQ handling in the reset > path. > > Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4 > Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 > > Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com> Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Baochen Qiang <quic_bqiang@quicinc.com> wrote: > For non-WoW suspend/resume, ath12k host powers down whole hardware > when suspend and powers up it when resume, the code path it goes > through is very like the ath12k reset logic. > > In order to reuse that logic, rearrange IRQ handling in the reset > path. > > Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4 > Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 > > Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com> > Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> 10 patches applied to ath-next branch of ath.git, thanks. c7b2da3c0a57 wifi: ath12k: rearrange IRQ enable/disable in reset path b8b50a489d51 wifi: ath12k: remove MHI LOOPBACK channels 8591b2baaee4 wifi: ath12k: do not dump SRNG statistics during resume 1623bf78c846 wifi: ath12k: fix warning on DMA ring capabilities event 7b3d4eb283d2 wifi: ath12k: decrease MHI channel buffer length to 8KB 692921ead832 wifi: ath12k: flush all packets before suspend b1c9992c675b wifi: ath12k: no need to handle pktlog during suspend/resume 2652f6b472ff wifi: ath12k: avoid stopping mac80211 queues in ath12k_core_restart() 8d5f4da8d70b wifi: ath12k: support suspend/resume 2b0028458996 wifi: ath12k: change supports_suspend to true for WCN7850
diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c index 3c522a4b3e9b..28663cf4db30 100644 --- a/drivers/net/wireless/ath/ath12k/core.c +++ b/drivers/net/wireless/ath/ath12k/core.c @@ -879,9 +879,8 @@ static int ath12k_core_reconfigure_on_crash(struct ath12k_base *ab) int ret; mutex_lock(&ab->core_lock); - ath12k_hif_irq_disable(ab); ath12k_dp_pdev_free(ab); - ath12k_hif_stop(ab); + ath12k_ce_cleanup_pipes(ab); ath12k_wmi_detach(ab); ath12k_dp_rx_pdev_reo_cleanup(ab); mutex_unlock(&ab->core_lock); @@ -1136,6 +1135,9 @@ static void ath12k_core_reset(struct work_struct *work) time_left = wait_for_completion_timeout(&ab->recovery_start, ATH12K_RECOVER_START_TIMEOUT_HZ); + ath12k_hif_irq_disable(ab); + ath12k_hif_ce_irq_disable(ab); + ath12k_hif_power_down(ab); ath12k_qmi_free_resource(ab); ath12k_hif_power_up(ab);
For non-WoW suspend/resume, ath12k host powers down whole hardware when suspend and powers up it when resume, the code path it goes through is very like the ath12k reset logic. In order to reuse that logic, rearrange IRQ handling in the reset path. Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4 Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com> --- drivers/net/wireless/ath/ath12k/core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)