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Date: Sat, 31 Dec 2022 17:56:33 +0000
From: Caleb Connolly <caleb.connolly@...aro.org>
To: Alex Elder <elder@...aro.org>, davem@...emloft.net,
edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com
Cc: mka@...omium.org, evgreen@...omium.org, andersson@...nel.org,
quic_cpratapa@...cinc.com, quic_avuyyuru@...cinc.com,
quic_jponduru@...cinc.com, quic_subashab@...cinc.com,
elder@...nel.org, netdev@...r.kernel.org,
linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 3/6] net: ipa: enable IPA interrupt handlers
separate from registration
On 30/12/2022 23:22, Alex Elder wrote:
> Expose ipa_interrupt_enable() and have functions that register
> IPA interrupt handlers enable them directly, rather than having the
> registration process do that. Do the same for disabling IPA
> interrupt handlers.
Hi,
>
> Signed-off-by: Alex Elder <elder@...aro.org>
> ---
> drivers/net/ipa/ipa_interrupt.c | 8 ++------
> drivers/net/ipa/ipa_interrupt.h | 14 ++++++++++++++
> drivers/net/ipa/ipa_power.c | 6 +++++-
> drivers/net/ipa/ipa_uc.c | 4 ++++
> 4 files changed, 25 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/net/ipa/ipa_interrupt.c b/drivers/net/ipa/ipa_interrupt.c
> index 7b7388c14806f..87f4b94d02a3f 100644
> --- a/drivers/net/ipa/ipa_interrupt.c
> +++ b/drivers/net/ipa/ipa_interrupt.c
> @@ -135,7 +135,7 @@ static void ipa_interrupt_enabled_update(struct ipa *ipa)
> }
>
> /* Enable an IPA interrupt type */
> -static void ipa_interrupt_enable(struct ipa *ipa, enum ipa_irq_id ipa_irq)
> +void ipa_interrupt_enable(struct ipa *ipa, enum ipa_irq_id ipa_irq)
> {
> /* Update the IPA interrupt mask to enable it */
> ipa->interrupt->enabled |= BIT(ipa_irq);
> @@ -143,7 +143,7 @@ static void ipa_interrupt_enable(struct ipa *ipa, enum ipa_irq_id ipa_irq)
> }
>
> /* Disable an IPA interrupt type */
> -static void ipa_interrupt_disable(struct ipa *ipa, enum ipa_irq_id ipa_irq)
> +void ipa_interrupt_disable(struct ipa *ipa, enum ipa_irq_id ipa_irq)
> {
> /* Update the IPA interrupt mask to disable it */
> ipa->interrupt->enabled &= ~BIT(ipa_irq);
> @@ -232,8 +232,6 @@ void ipa_interrupt_add(struct ipa_interrupt *interrupt,
> return;
>
> interrupt->handler[ipa_irq] = handler;
> -
> - ipa_interrupt_enable(interrupt->ipa, ipa_irq);
> }
>
> /* Remove the handler for an IPA interrupt type */
> @@ -243,8 +241,6 @@ ipa_interrupt_remove(struct ipa_interrupt *interrupt, enum ipa_irq_id ipa_irq)
> if (WARN_ON(ipa_irq >= IPA_IRQ_COUNT))
> return;
>
> - ipa_interrupt_disable(interrupt->ipa, ipa_irq);
> -
> interrupt->handler[ipa_irq] = NULL;
> }
>
> diff --git a/drivers/net/ipa/ipa_interrupt.h b/drivers/net/ipa/ipa_interrupt.h
> index f31fd9965fdc6..5f7d2e90ea337 100644
> --- a/drivers/net/ipa/ipa_interrupt.h
> +++ b/drivers/net/ipa/ipa_interrupt.h
> @@ -85,6 +85,20 @@ void ipa_interrupt_suspend_clear_all(struct ipa_interrupt *interrupt);
> */
> void ipa_interrupt_simulate_suspend(struct ipa_interrupt *interrupt);
>
> +/**
> + * ipa_interrupt_enable() - Enable an IPA interrupt type
> + * @ipa: IPA pointer
> + * @ipa_irq: IPA interrupt ID
> + */
> +void ipa_interrupt_enable(struct ipa *ipa, enum ipa_irq_id ipa_irq);
I think you forgot a forward declaration for enum ipa_irq_id
Kind Regards,
Caleb
> +
> +/**
> + * ipa_interrupt_disable() - Disable an IPA interrupt type
> + * @ipa: IPA pointer
> + * @ipa_irq: IPA interrupt ID
> + */
> +void ipa_interrupt_disable(struct ipa *ipa, enum ipa_irq_id ipa_irq);
> +
> /**
> * ipa_interrupt_config() - Configure the IPA interrupt framework
> * @ipa: IPA pointer
> diff --git a/drivers/net/ipa/ipa_power.c b/drivers/net/ipa/ipa_power.c
> index 8420f93128a26..9148d606d5fc2 100644
> --- a/drivers/net/ipa/ipa_power.c
> +++ b/drivers/net/ipa/ipa_power.c
> @@ -337,10 +337,13 @@ int ipa_power_setup(struct ipa *ipa)
>
> ipa_interrupt_add(ipa->interrupt, IPA_IRQ_TX_SUSPEND,
> ipa_suspend_handler);
> + ipa_interrupt_enable(ipa, IPA_IRQ_TX_SUSPEND);
>
> ret = device_init_wakeup(&ipa->pdev->dev, true);
> - if (ret)
> + if (ret) {
> + ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND);
> ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_TX_SUSPEND);
> + }
>
> return ret;
> }
> @@ -348,6 +351,7 @@ int ipa_power_setup(struct ipa *ipa)
> void ipa_power_teardown(struct ipa *ipa)
> {
> (void)device_init_wakeup(&ipa->pdev->dev, false);
> + ipa_interrupt_disable(ipa, IPA_IRQ_TX_SUSPEND);
> ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_TX_SUSPEND);
> }
>
> diff --git a/drivers/net/ipa/ipa_uc.c b/drivers/net/ipa/ipa_uc.c
> index 0a890b44c09e1..af541758d047f 100644
> --- a/drivers/net/ipa/ipa_uc.c
> +++ b/drivers/net/ipa/ipa_uc.c
> @@ -187,7 +187,9 @@ void ipa_uc_config(struct ipa *ipa)
> ipa->uc_powered = false;
> ipa->uc_loaded = false;
> ipa_interrupt_add(interrupt, IPA_IRQ_UC_0, ipa_uc_interrupt_handler);
> + ipa_interrupt_enable(ipa, IPA_IRQ_UC_0);
> ipa_interrupt_add(interrupt, IPA_IRQ_UC_1, ipa_uc_interrupt_handler);
> + ipa_interrupt_enable(ipa, IPA_IRQ_UC_1);
> }
>
> /* Inverse of ipa_uc_config() */
> @@ -195,7 +197,9 @@ void ipa_uc_deconfig(struct ipa *ipa)
> {
> struct device *dev = &ipa->pdev->dev;
>
> + ipa_interrupt_disable(ipa, IPA_IRQ_UC_1);
> ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_UC_1);
> + ipa_interrupt_disable(ipa, IPA_IRQ_UC_0);
> ipa_interrupt_remove(ipa->interrupt, IPA_IRQ_UC_0);
> if (ipa->uc_loaded)
> ipa_power_retention(ipa, false);
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