From: Abel Vesa <abel.vesa@nxp.com> To: Sudeep Holla <sudeep.holla@arm.com>, Marc Zyngier <marc.zyngier@arm.com>, Rob Herring <robh@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Shawn Guo <shawnguo@kernel.org>, Sascha Hauer <kernel@pengutronix.de>, "catalin.marinas@arm.com" <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Fabio Estevam <fabio.estevam@nxp.com>, Lucas Stach <l.stach@pengutronix.de>, Aisheng Dong <aisheng.dong@nxp.com> Cc: dl-linux-imx <linux-imx@nxp.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>, Abel Vesa <abel.vesa@nxp.com> Subject: [RFC 4/7] psci: Add cpu_poke ops to support core poking Date: Wed, 27 Mar 2019 13:21:13 +0000 [thread overview] Message-ID: <1553692845-20983-5-git-send-email-abel.vesa@nxp.com> (raw) In-Reply-To: <1553692845-20983-1-git-send-email-abel.vesa@nxp.com> There can be platforms that need a dedicated work to be done in TF-A before the specified core can be woken up through an IPI. Allow those platforms to call into the TF-A to do that work by making use of the cpu_poke operation. Signed-off-by: Abel Vesa <abel.vesa@nxp.com> --- arch/arm64/include/asm/cpu_ops.h | 1 + arch/arm64/kernel/psci.c | 1 + drivers/firmware/psci.c | 6 ++++++ include/linux/psci.h | 1 + include/uapi/linux/psci.h | 2 ++ 5 files changed, 11 insertions(+) diff --git a/arch/arm64/include/asm/cpu_ops.h b/arch/arm64/include/asm/cpu_ops.h index 8f03446..913afef 100644 --- a/arch/arm64/include/asm/cpu_ops.h +++ b/arch/arm64/include/asm/cpu_ops.h @@ -60,6 +60,7 @@ struct cpu_operations { #ifdef CONFIG_CPU_IDLE int (*cpu_init_idle)(unsigned int); int (*cpu_suspend)(unsigned long); + int (*cpu_poke)(unsigned int); #endif }; diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c index 8cdaf25..53227eb 100644 --- a/arch/arm64/kernel/psci.c +++ b/arch/arm64/kernel/psci.c @@ -115,6 +115,7 @@ const struct cpu_operations cpu_psci_ops = { #ifdef CONFIG_CPU_IDLE .cpu_init_idle = psci_cpu_init_idle, .cpu_suspend = psci_cpu_suspend_enter, + .cpu_poke = psci_cpu_suspend_exit, #endif .cpu_init = cpu_psci_cpu_init, .cpu_prepare = cpu_psci_cpu_prepare, diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c index c80ec1d..282bc47 100644 --- a/drivers/firmware/psci.c +++ b/drivers/firmware/psci.c @@ -73,6 +73,7 @@ enum psci_function { PSCI_FN_CPU_ON, PSCI_FN_CPU_OFF, PSCI_FN_MIGRATE, + PSCI_FN_CPU_POKE, PSCI_FN_MAX, }; @@ -424,6 +425,11 @@ int psci_cpu_suspend_enter(unsigned long index) return ret; } +int psci_cpu_suspend_exit(unsigned int index) +{ + return invoke_psci_fn(PSCI_0_2_FN_CPU_POKE, index, 0, 0); +} + /* ARM specific CPU idle operations */ #ifdef CONFIG_ARM static const struct cpuidle_ops psci_cpuidle_ops __initconst = { diff --git a/include/linux/psci.h b/include/linux/psci.h index 8b1b3b5..d863733 100644 --- a/include/linux/psci.h +++ b/include/linux/psci.h @@ -24,6 +24,7 @@ bool psci_tos_resident_on(int cpu); int psci_cpu_init_idle(unsigned int cpu); int psci_cpu_suspend_enter(unsigned long index); +int psci_cpu_suspend_exit(unsigned int index); enum psci_conduit { PSCI_CONDUIT_NONE, diff --git a/include/uapi/linux/psci.h b/include/uapi/linux/psci.h index b3bcabe..19e7481 100644 --- a/include/uapi/linux/psci.h +++ b/include/uapi/linux/psci.h @@ -40,8 +40,10 @@ #define PSCI_0_2_FN_MIGRATE_INFO_UP_CPU PSCI_0_2_FN(7) #define PSCI_0_2_FN_SYSTEM_OFF PSCI_0_2_FN(8) #define PSCI_0_2_FN_SYSTEM_RESET PSCI_0_2_FN(9) +#define PSCI_0_2_FN_CPU_POKE PSCI_0_2_FN(11) #define PSCI_0_2_FN64_CPU_SUSPEND PSCI_0_2_FN64(1) +#define PSCI_0_2_FN64_CPU_POKE PSCI_0_2_FN64(11) #define PSCI_0_2_FN64_CPU_ON PSCI_0_2_FN64(3) #define PSCI_0_2_FN64_AFFINITY_INFO PSCI_0_2_FN64(4) #define PSCI_0_2_FN64_MIGRATE PSCI_0_2_FN64(5) -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Abel Vesa <abel.vesa@nxp.com> To: Sudeep Holla <sudeep.holla@arm.com>, Marc Zyngier <marc.zyngier@arm.com>, Rob Herring <robh@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Shawn Guo <shawnguo@kernel.org>, Sascha Hauer <kernel@pengutronix.de>, "catalin.marinas@arm.com" <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Fabio Estevam <fabio.estevam@nxp.com>, Lucas Stach <l.stach@pengutronix.de>, Aisheng Dong <aisheng.dong@nxp.com> Cc: Abel Vesa <abel.vesa@nxp.com>, "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>, dl-linux-imx <linux-imx@nxp.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org> Subject: [RFC 4/7] psci: Add cpu_poke ops to support core poking Date: Wed, 27 Mar 2019 13:21:13 +0000 [thread overview] Message-ID: <1553692845-20983-5-git-send-email-abel.vesa@nxp.com> (raw) In-Reply-To: <1553692845-20983-1-git-send-email-abel.vesa@nxp.com> There can be platforms that need a dedicated work to be done in TF-A before the specified core can be woken up through an IPI. Allow those platforms to call into the TF-A to do that work by making use of the cpu_poke operation. Signed-off-by: Abel Vesa <abel.vesa@nxp.com> --- arch/arm64/include/asm/cpu_ops.h | 1 + arch/arm64/kernel/psci.c | 1 + drivers/firmware/psci.c | 6 ++++++ include/linux/psci.h | 1 + include/uapi/linux/psci.h | 2 ++ 5 files changed, 11 insertions(+) diff --git a/arch/arm64/include/asm/cpu_ops.h b/arch/arm64/include/asm/cpu_ops.h index 8f03446..913afef 100644 --- a/arch/arm64/include/asm/cpu_ops.h +++ b/arch/arm64/include/asm/cpu_ops.h @@ -60,6 +60,7 @@ struct cpu_operations { #ifdef CONFIG_CPU_IDLE int (*cpu_init_idle)(unsigned int); int (*cpu_suspend)(unsigned long); + int (*cpu_poke)(unsigned int); #endif }; diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c index 8cdaf25..53227eb 100644 --- a/arch/arm64/kernel/psci.c +++ b/arch/arm64/kernel/psci.c @@ -115,6 +115,7 @@ const struct cpu_operations cpu_psci_ops = { #ifdef CONFIG_CPU_IDLE .cpu_init_idle = psci_cpu_init_idle, .cpu_suspend = psci_cpu_suspend_enter, + .cpu_poke = psci_cpu_suspend_exit, #endif .cpu_init = cpu_psci_cpu_init, .cpu_prepare = cpu_psci_cpu_prepare, diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c index c80ec1d..282bc47 100644 --- a/drivers/firmware/psci.c +++ b/drivers/firmware/psci.c @@ -73,6 +73,7 @@ enum psci_function { PSCI_FN_CPU_ON, PSCI_FN_CPU_OFF, PSCI_FN_MIGRATE, + PSCI_FN_CPU_POKE, PSCI_FN_MAX, }; @@ -424,6 +425,11 @@ int psci_cpu_suspend_enter(unsigned long index) return ret; } +int psci_cpu_suspend_exit(unsigned int index) +{ + return invoke_psci_fn(PSCI_0_2_FN_CPU_POKE, index, 0, 0); +} + /* ARM specific CPU idle operations */ #ifdef CONFIG_ARM static const struct cpuidle_ops psci_cpuidle_ops __initconst = { diff --git a/include/linux/psci.h b/include/linux/psci.h index 8b1b3b5..d863733 100644 --- a/include/linux/psci.h +++ b/include/linux/psci.h @@ -24,6 +24,7 @@ bool psci_tos_resident_on(int cpu); int psci_cpu_init_idle(unsigned int cpu); int psci_cpu_suspend_enter(unsigned long index); +int psci_cpu_suspend_exit(unsigned int index); enum psci_conduit { PSCI_CONDUIT_NONE, diff --git a/include/uapi/linux/psci.h b/include/uapi/linux/psci.h index b3bcabe..19e7481 100644 --- a/include/uapi/linux/psci.h +++ b/include/uapi/linux/psci.h @@ -40,8 +40,10 @@ #define PSCI_0_2_FN_MIGRATE_INFO_UP_CPU PSCI_0_2_FN(7) #define PSCI_0_2_FN_SYSTEM_OFF PSCI_0_2_FN(8) #define PSCI_0_2_FN_SYSTEM_RESET PSCI_0_2_FN(9) +#define PSCI_0_2_FN_CPU_POKE PSCI_0_2_FN(11) #define PSCI_0_2_FN64_CPU_SUSPEND PSCI_0_2_FN64(1) +#define PSCI_0_2_FN64_CPU_POKE PSCI_0_2_FN64(11) #define PSCI_0_2_FN64_CPU_ON PSCI_0_2_FN64(3) #define PSCI_0_2_FN64_AFFINITY_INFO PSCI_0_2_FN64(4) #define PSCI_0_2_FN64_MIGRATE PSCI_0_2_FN64(5) -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-03-27 13:21 UTC|newest] Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-27 13:21 [RFC 0/7] cpuidle: Add poking mechanism to support non-IPI wakeup Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` [RFC 1/7] sched: idle: Add sched get idle state helper Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` [RFC 2/7] cpuidle: Add cpu poke support Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` [RFC 3/7] smp: Poke the cores before requesting IPI Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` Abel Vesa [this message] 2019-03-27 13:21 ` [RFC 4/7] psci: Add cpu_poke ops to support core poking Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` [RFC 5/7] cpuidle-arm: Add ops to support poke alonside enter Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` [RFC 6/7] cpuidle-arm: Add arm64 wake helper for cpu_poke op Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` [RFC 7/7] arm64: dts: imx8mq: Add cpu-sleep state with poke wake-up enabled Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 13:21 ` Abel Vesa 2019-03-27 15:44 ` [RFC 0/7] cpuidle: Add poking mechanism to support non-IPI wakeup Lucas Stach 2019-03-27 15:44 ` Lucas Stach 2019-03-27 15:44 ` Lucas Stach 2019-03-27 15:57 ` Marc Zyngier 2019-03-27 15:57 ` Marc Zyngier 2019-03-27 15:57 ` Marc Zyngier 2019-03-27 16:06 ` Lucas Stach 2019-03-27 16:06 ` Lucas Stach 2019-03-27 16:06 ` Lucas Stach 2019-03-27 17:00 ` Leonard Crestez 2019-03-27 17:00 ` Leonard Crestez 2019-03-27 17:00 ` Leonard Crestez 2019-03-27 17:11 ` Lucas Stach 2019-03-27 17:11 ` Lucas Stach 2019-03-27 17:11 ` Lucas Stach 2019-03-27 18:13 ` Marc Zyngier 2019-03-27 18:13 ` Marc Zyngier 2019-03-27 18:13 ` Marc Zyngier 2019-03-28 11:21 ` Aisheng Dong 2019-03-28 11:21 ` Aisheng Dong 2019-03-28 11:21 ` Aisheng Dong 2019-03-29 9:11 ` Richard Zhu 2019-03-29 9:11 ` Richard Zhu 2019-03-29 9:11 ` Richard Zhu 2019-03-27 17:45 ` Marc Zyngier 2019-03-27 17:45 ` Marc Zyngier 2019-03-27 17:45 ` Marc Zyngier 2019-03-27 17:55 ` Lucas Stach 2019-03-27 17:55 ` Lucas Stach 2019-03-27 17:55 ` Lucas Stach 2019-03-28 11:27 ` Aisheng Dong 2019-03-28 11:27 ` Aisheng Dong 2019-03-28 11:27 ` Aisheng Dong 2019-03-27 18:40 ` Leonard Crestez 2019-03-27 18:40 ` Leonard Crestez 2019-03-27 18:40 ` Leonard Crestez 2019-03-28 10:35 ` Marc Zyngier 2019-03-28 10:35 ` Marc Zyngier 2019-03-28 10:35 ` Marc Zyngier 2019-03-28 10:36 ` Rafael J. Wysocki 2019-03-28 10:36 ` Rafael J. Wysocki 2019-03-28 10:36 ` Rafael J. Wysocki 2019-03-28 11:55 ` Aisheng Dong 2019-03-28 11:55 ` Aisheng Dong 2019-03-28 11:55 ` Aisheng Dong 2019-03-28 10:45 ` Lorenzo Pieralisi 2019-03-28 10:45 ` Lorenzo Pieralisi 2019-03-28 10:45 ` Lorenzo Pieralisi 2019-11-06 20:14 ` Florian Fainelli 2019-11-06 20:14 ` Florian Fainelli 2019-11-06 21:31 ` Leonard Crestez 2019-11-06 21:31 ` Leonard Crestez 2019-11-06 22:10 ` Florian Fainelli 2019-11-06 22:10 ` Florian Fainelli 2019-11-06 22:47 ` Leonard Crestez 2019-11-06 22:47 ` Leonard Crestez
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