Message ID | 1595344835-67746-3-git-send-email-franck.lenormand@oss.nxp.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | Add support of SECVIO from SNVS on iMX8q/x | expand |
> From: Franck Lenormand (OSS) <franck.lenormand@oss.nxp.com> > Sent: Tuesday, July 21, 2020 11:21 PM > > This patch adds the API to retrieve the status of an IRQ. > > It also adds values used to process SECVIO IRQ from the SCU. > > Signed-off-by: Franck LENORMAND <franck.lenormand@oss.nxp.com> > --- > drivers/firmware/imx/imx-scu-irq.c | 37 > ++++++++++++++++++++++++++++++++++++- > include/linux/firmware/imx/sci.h | 4 ++++ > 2 files changed, 40 insertions(+), 1 deletion(-) > > diff --git a/drivers/firmware/imx/imx-scu-irq.c > b/drivers/firmware/imx/imx-scu-irq.c > index d9dcc20..d31d600 100644 > --- a/drivers/firmware/imx/imx-scu-irq.c > +++ b/drivers/firmware/imx/imx-scu-irq.c > @@ -1,6 +1,6 @@ > // SPDX-License-Identifier: GPL-2.0+ > /* > - * Copyright 2019 NXP > + * Copyright 2019-2020 NXP > * > * Implementation of the SCU IRQ functions using MU. > * > @@ -97,6 +97,41 @@ static void imx_scu_irq_work_handler(struct > work_struct *work) > } > } > > +/** > + * imx_scu_irq_get_status() - Get the status of the IRQs of a group This API is a little duplicated with the exist imx_scu_irq_work_handler. Can we refactor the exist code into this API? Regards Aisheng > + * > + * @group: The group of IRQ to retrieve status > + * @irq_status: Status of the IRQs retrieved > + * > + * Return: > + * 0 - OK > + * < 0 - error. > + */ > +int imx_scu_irq_get_status(u8 group, u32 *irq_status) { > + struct imx_sc_msg_irq_get_status msg; > + struct imx_sc_rpc_msg *hdr = &msg.hdr; > + int ret; > + > + hdr->ver = IMX_SC_RPC_VERSION; > + hdr->svc = IMX_SC_RPC_SVC_IRQ; > + hdr->func = IMX_SC_IRQ_FUNC_STATUS; > + hdr->size = 2; > + > + msg.data.req.resource = mu_resource_id; > + msg.data.req.group = group; > + > + ret = imx_scu_call_rpc(imx_sc_irq_ipc_handle, &msg, true); > + if (ret) > + return ret; > + > + if (irq_status) > + *irq_status = msg.data.resp.status; > + > + return 0; > +} > +EXPORT_SYMBOL(imx_scu_irq_get_status); > + > int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable) { > struct imx_sc_msg_irq_enable msg; > diff --git a/include/linux/firmware/imx/sci.h b/include/linux/firmware/imx/sci.h > index 914dce1..20a16a7 100644 > --- a/include/linux/firmware/imx/sci.h > +++ b/include/linux/firmware/imx/sci.h > @@ -17,9 +17,13 @@ > #include <linux/firmware/imx/svc/rm.h> > #include <linux/firmware/imx/svc/seco.h> > > +#define IMX_SC_IRQ_GROUP_WAKE 3U /* Wakeup interrupts */ > +#define IMX_SC_IRQ_SECVIO BIT(6) /* Security violation */ > + > int imx_scu_enable_general_irq_channel(struct device *dev); int > imx_scu_irq_register_notifier(struct notifier_block *nb); int > imx_scu_irq_unregister_notifier(struct notifier_block *nb); int > imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable); int > imx_scu_soc_init(struct device *dev); > +int imx_scu_irq_get_status(u8 group, u32 *irq_status); > #endif /* _SC_SCI_H */ > -- > 2.7.4
diff --git a/drivers/firmware/imx/imx-scu-irq.c b/drivers/firmware/imx/imx-scu-irq.c index d9dcc20..d31d600 100644 --- a/drivers/firmware/imx/imx-scu-irq.c +++ b/drivers/firmware/imx/imx-scu-irq.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0+ /* - * Copyright 2019 NXP + * Copyright 2019-2020 NXP * * Implementation of the SCU IRQ functions using MU. * @@ -97,6 +97,41 @@ static void imx_scu_irq_work_handler(struct work_struct *work) } } +/** + * imx_scu_irq_get_status() - Get the status of the IRQs of a group + * + * @group: The group of IRQ to retrieve status + * @irq_status: Status of the IRQs retrieved + * + * Return: + * 0 - OK + * < 0 - error. + */ +int imx_scu_irq_get_status(u8 group, u32 *irq_status) +{ + struct imx_sc_msg_irq_get_status msg; + struct imx_sc_rpc_msg *hdr = &msg.hdr; + int ret; + + hdr->ver = IMX_SC_RPC_VERSION; + hdr->svc = IMX_SC_RPC_SVC_IRQ; + hdr->func = IMX_SC_IRQ_FUNC_STATUS; + hdr->size = 2; + + msg.data.req.resource = mu_resource_id; + msg.data.req.group = group; + + ret = imx_scu_call_rpc(imx_sc_irq_ipc_handle, &msg, true); + if (ret) + return ret; + + if (irq_status) + *irq_status = msg.data.resp.status; + + return 0; +} +EXPORT_SYMBOL(imx_scu_irq_get_status); + int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable) { struct imx_sc_msg_irq_enable msg; diff --git a/include/linux/firmware/imx/sci.h b/include/linux/firmware/imx/sci.h index 914dce1..20a16a7 100644 --- a/include/linux/firmware/imx/sci.h +++ b/include/linux/firmware/imx/sci.h @@ -17,9 +17,13 @@ #include <linux/firmware/imx/svc/rm.h> #include <linux/firmware/imx/svc/seco.h> +#define IMX_SC_IRQ_GROUP_WAKE 3U /* Wakeup interrupts */ +#define IMX_SC_IRQ_SECVIO BIT(6) /* Security violation */ + int imx_scu_enable_general_irq_channel(struct device *dev); int imx_scu_irq_register_notifier(struct notifier_block *nb); int imx_scu_irq_unregister_notifier(struct notifier_block *nb); int imx_scu_irq_group_enable(u8 group, u32 mask, u8 enable); int imx_scu_soc_init(struct device *dev); +int imx_scu_irq_get_status(u8 group, u32 *irq_status); #endif /* _SC_SCI_H */