* [PATCH v3] mailbox: qcom-ipcc: Log the pending interrupt during resume
@ 2022-05-17 10:43 Sibi Sankar
2022-05-24 13:48 ` Guenter Roeck
0 siblings, 1 reply; 3+ messages in thread
From: Sibi Sankar @ 2022-05-17 10:43 UTC (permalink / raw)
To: bjorn.andersson, mani, jassisinghbrar
Cc: linux-kernel, linux-arm-msm, agross, Prasad Sodagudi, Sibi Sankar
From: Prasad Sodagudi <quic_psodagud@quicinc.com>
Enable logging of the pending interrupt that triggered device wakeup. This
logging information helps to debug IRQs that cause periodic device wakeups
by printing the detailed information of pending IPCC interrupts.
Scenario: Device wakeup caused by Modem crash
Logs:
qcom-ipcc mailbox: virq: 182 triggered client-id: 2; signal-id: 2
From the IPCC bindings it can further be understood that the client here is
IPCC_CLIENT_MPSS and the signal was IPCC_MPROC_SIGNAL_SMP2P.
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Prasad Sodagudi <quic_psodagud@quicinc.com>
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
---
V3:
* Use pm_sleep_ptr and convert info to dbg [Mani]
* Fixup commit message
V2:
* Fix build error when ipcc is a module [Kernel Test Bot]
drivers/mailbox/qcom-ipcc.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/mailbox/qcom-ipcc.c b/drivers/mailbox/qcom-ipcc.c
index c5d963222014..5a42bc2a1083 100644
--- a/drivers/mailbox/qcom-ipcc.c
+++ b/drivers/mailbox/qcom-ipcc.c
@@ -254,6 +254,24 @@ static int qcom_ipcc_setup_mbox(struct qcom_ipcc *ipcc,
return devm_mbox_controller_register(dev, mbox);
}
+static int qcom_ipcc_pm_resume(struct device *dev)
+{
+ struct qcom_ipcc *ipcc = dev_get_drvdata(dev);
+ u32 hwirq;
+ int virq;
+
+ hwirq = readl(ipcc->base + IPCC_REG_RECV_ID);
+ if (hwirq == IPCC_NO_PENDING_IRQ)
+ return 0;
+
+ virq = irq_find_mapping(ipcc->irq_domain, hwirq);
+
+ dev_dbg(dev, "virq: %d triggered client-id: %ld; signal-id: %ld\n", virq,
+ FIELD_GET(IPCC_CLIENT_ID_MASK, hwirq), FIELD_GET(IPCC_SIGNAL_ID_MASK, hwirq));
+
+ return 0;
+}
+
static int qcom_ipcc_probe(struct platform_device *pdev)
{
struct qcom_ipcc *ipcc;
@@ -324,6 +342,10 @@ static const struct of_device_id qcom_ipcc_of_match[] = {
};
MODULE_DEVICE_TABLE(of, qcom_ipcc_of_match);
+static const struct dev_pm_ops qcom_ipcc_dev_pm_ops = {
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(NULL, qcom_ipcc_pm_resume)
+};
+
static struct platform_driver qcom_ipcc_driver = {
.probe = qcom_ipcc_probe,
.remove = qcom_ipcc_remove,
@@ -331,6 +353,7 @@ static struct platform_driver qcom_ipcc_driver = {
.name = "qcom-ipcc",
.of_match_table = qcom_ipcc_of_match,
.suppress_bind_attrs = true,
+ .pm = pm_sleep_ptr(&qcom_ipcc_dev_pm_ops),
},
};
--
2.7.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v3] mailbox: qcom-ipcc: Log the pending interrupt during resume
2022-05-17 10:43 [PATCH v3] mailbox: qcom-ipcc: Log the pending interrupt during resume Sibi Sankar
@ 2022-05-24 13:48 ` Guenter Roeck
2022-05-24 13:57 ` Manivannan Sadhasivam
0 siblings, 1 reply; 3+ messages in thread
From: Guenter Roeck @ 2022-05-24 13:48 UTC (permalink / raw)
To: Sibi Sankar
Cc: bjorn.andersson, mani, jassisinghbrar, linux-kernel,
linux-arm-msm, agross, Prasad Sodagudi
On Tue, May 17, 2022 at 04:13:00PM +0530, Sibi Sankar wrote:
> From: Prasad Sodagudi <quic_psodagud@quicinc.com>
>
> Enable logging of the pending interrupt that triggered device wakeup. This
> logging information helps to debug IRQs that cause periodic device wakeups
> by printing the detailed information of pending IPCC interrupts.
>
> Scenario: Device wakeup caused by Modem crash
> Logs:
> qcom-ipcc mailbox: virq: 182 triggered client-id: 2; signal-id: 2
>
> >From the IPCC bindings it can further be understood that the client here is
> IPCC_CLIENT_MPSS and the signal was IPCC_MPROC_SIGNAL_SMP2P.
>
> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
> Signed-off-by: Prasad Sodagudi <quic_psodagud@quicinc.com>
> Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
> ---
>
> V3:
> * Use pm_sleep_ptr and convert info to dbg [Mani]
Unfortunately, this results in
drivers/mailbox/qcom-ipcc.c:258:12: error: 'qcom_ipcc_pm_resume' defined but not used
on builds with PM disabled, as seen in next-20220524.
Guenter
> * Fixup commit message
>
> V2:
> * Fix build error when ipcc is a module [Kernel Test Bot]
>
> drivers/mailbox/qcom-ipcc.c | 23 +++++++++++++++++++++++
> 1 file changed, 23 insertions(+)
>
> diff --git a/drivers/mailbox/qcom-ipcc.c b/drivers/mailbox/qcom-ipcc.c
> index c5d963222014..5a42bc2a1083 100644
> --- a/drivers/mailbox/qcom-ipcc.c
> +++ b/drivers/mailbox/qcom-ipcc.c
> @@ -254,6 +254,24 @@ static int qcom_ipcc_setup_mbox(struct qcom_ipcc *ipcc,
> return devm_mbox_controller_register(dev, mbox);
> }
>
> +static int qcom_ipcc_pm_resume(struct device *dev)
> +{
> + struct qcom_ipcc *ipcc = dev_get_drvdata(dev);
> + u32 hwirq;
> + int virq;
> +
> + hwirq = readl(ipcc->base + IPCC_REG_RECV_ID);
> + if (hwirq == IPCC_NO_PENDING_IRQ)
> + return 0;
> +
> + virq = irq_find_mapping(ipcc->irq_domain, hwirq);
> +
> + dev_dbg(dev, "virq: %d triggered client-id: %ld; signal-id: %ld\n", virq,
> + FIELD_GET(IPCC_CLIENT_ID_MASK, hwirq), FIELD_GET(IPCC_SIGNAL_ID_MASK, hwirq));
> +
> + return 0;
> +}
> +
> static int qcom_ipcc_probe(struct platform_device *pdev)
> {
> struct qcom_ipcc *ipcc;
> @@ -324,6 +342,10 @@ static const struct of_device_id qcom_ipcc_of_match[] = {
> };
> MODULE_DEVICE_TABLE(of, qcom_ipcc_of_match);
>
> +static const struct dev_pm_ops qcom_ipcc_dev_pm_ops = {
> + SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(NULL, qcom_ipcc_pm_resume)
> +};
> +
> static struct platform_driver qcom_ipcc_driver = {
> .probe = qcom_ipcc_probe,
> .remove = qcom_ipcc_remove,
> @@ -331,6 +353,7 @@ static struct platform_driver qcom_ipcc_driver = {
> .name = "qcom-ipcc",
> .of_match_table = qcom_ipcc_of_match,
> .suppress_bind_attrs = true,
> + .pm = pm_sleep_ptr(&qcom_ipcc_dev_pm_ops),
> },
> };
>
> --
> 2.7.4
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v3] mailbox: qcom-ipcc: Log the pending interrupt during resume
2022-05-24 13:48 ` Guenter Roeck
@ 2022-05-24 13:57 ` Manivannan Sadhasivam
0 siblings, 0 replies; 3+ messages in thread
From: Manivannan Sadhasivam @ 2022-05-24 13:57 UTC (permalink / raw)
To: Guenter Roeck
Cc: Sibi Sankar, bjorn.andersson, jassisinghbrar, linux-kernel,
linux-arm-msm, agross, Prasad Sodagudi
On Tue, May 24, 2022 at 06:48:25AM -0700, Guenter Roeck wrote:
> On Tue, May 17, 2022 at 04:13:00PM +0530, Sibi Sankar wrote:
> > From: Prasad Sodagudi <quic_psodagud@quicinc.com>
> >
> > Enable logging of the pending interrupt that triggered device wakeup. This
> > logging information helps to debug IRQs that cause periodic device wakeups
> > by printing the detailed information of pending IPCC interrupts.
> >
> > Scenario: Device wakeup caused by Modem crash
> > Logs:
> > qcom-ipcc mailbox: virq: 182 triggered client-id: 2; signal-id: 2
> >
> > >From the IPCC bindings it can further be understood that the client here is
> > IPCC_CLIENT_MPSS and the signal was IPCC_MPROC_SIGNAL_SMP2P.
> >
> > Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
> > Signed-off-by: Prasad Sodagudi <quic_psodagud@quicinc.com>
> > Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
> > ---
> >
> > V3:
> > * Use pm_sleep_ptr and convert info to dbg [Mani]
>
> Unfortunately, this results in
>
> drivers/mailbox/qcom-ipcc.c:258:12: error: 'qcom_ipcc_pm_resume' defined but not used
>
> on builds with PM disabled, as seen in next-20220524.
>
Yep, I missed it during review :(
But the fix has been submitted:
https://patchwork.kernel.org/project/linux-arm-msm/patch/20220523224702.2002652-1-nathan@kernel.org/
Thanks,
Mani
> Guenter
>
> > * Fixup commit message
> >
> > V2:
> > * Fix build error when ipcc is a module [Kernel Test Bot]
> >
> > drivers/mailbox/qcom-ipcc.c | 23 +++++++++++++++++++++++
> > 1 file changed, 23 insertions(+)
> >
> > diff --git a/drivers/mailbox/qcom-ipcc.c b/drivers/mailbox/qcom-ipcc.c
> > index c5d963222014..5a42bc2a1083 100644
> > --- a/drivers/mailbox/qcom-ipcc.c
> > +++ b/drivers/mailbox/qcom-ipcc.c
> > @@ -254,6 +254,24 @@ static int qcom_ipcc_setup_mbox(struct qcom_ipcc *ipcc,
> > return devm_mbox_controller_register(dev, mbox);
> > }
> >
> > +static int qcom_ipcc_pm_resume(struct device *dev)
> > +{
> > + struct qcom_ipcc *ipcc = dev_get_drvdata(dev);
> > + u32 hwirq;
> > + int virq;
> > +
> > + hwirq = readl(ipcc->base + IPCC_REG_RECV_ID);
> > + if (hwirq == IPCC_NO_PENDING_IRQ)
> > + return 0;
> > +
> > + virq = irq_find_mapping(ipcc->irq_domain, hwirq);
> > +
> > + dev_dbg(dev, "virq: %d triggered client-id: %ld; signal-id: %ld\n", virq,
> > + FIELD_GET(IPCC_CLIENT_ID_MASK, hwirq), FIELD_GET(IPCC_SIGNAL_ID_MASK, hwirq));
> > +
> > + return 0;
> > +}
> > +
> > static int qcom_ipcc_probe(struct platform_device *pdev)
> > {
> > struct qcom_ipcc *ipcc;
> > @@ -324,6 +342,10 @@ static const struct of_device_id qcom_ipcc_of_match[] = {
> > };
> > MODULE_DEVICE_TABLE(of, qcom_ipcc_of_match);
> >
> > +static const struct dev_pm_ops qcom_ipcc_dev_pm_ops = {
> > + SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(NULL, qcom_ipcc_pm_resume)
> > +};
> > +
> > static struct platform_driver qcom_ipcc_driver = {
> > .probe = qcom_ipcc_probe,
> > .remove = qcom_ipcc_remove,
> > @@ -331,6 +353,7 @@ static struct platform_driver qcom_ipcc_driver = {
> > .name = "qcom-ipcc",
> > .of_match_table = qcom_ipcc_of_match,
> > .suppress_bind_attrs = true,
> > + .pm = pm_sleep_ptr(&qcom_ipcc_dev_pm_ops),
> > },
> > };
> >
> > --
> > 2.7.4
> >
--
மணிவண்ணன் சதாசிவம்
^ permalink raw reply [flat|nested] 3+ messages in thread
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2022-05-17 10:43 [PATCH v3] mailbox: qcom-ipcc: Log the pending interrupt during resume Sibi Sankar
2022-05-24 13:48 ` Guenter Roeck
2022-05-24 13:57 ` Manivannan Sadhasivam
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