Messages in this thread Patch in this message | | | From | franck.lenormand@oss ... | Subject | [PATCH V3 2/5] firmware: imx: scu-irq: Add API to retrieve status of IRQ | Date | Tue, 10 Nov 2020 15:12:11 +0100 |
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From: Franck LENORMAND <franck.lenormand@oss.nxp.com>
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@nxp.com> --- drivers/firmware/imx/imx-scu-irq.c | 48 +++++++++++++++++++++++++++----------- include/linux/firmware/imx/sci.h | 4 ++++ 2 files changed, 39 insertions(+), 13 deletions(-)
diff --git a/drivers/firmware/imx/imx-scu-irq.c b/drivers/firmware/imx/imx-scu-irq.c index d9dcc20..bb0b5aa 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. * @@ -66,29 +66,18 @@ static int imx_scu_irq_notifier_call_chain(unsigned long status, u8 *group) static void imx_scu_irq_work_handler(struct work_struct *work) { - struct imx_sc_msg_irq_get_status msg; - struct imx_sc_rpc_msg *hdr = &msg.hdr; u32 irq_status; int ret; u8 i; for (i = 0; i < IMX_SC_IRQ_NUM_GROUP; i++) { - 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 = i; - - ret = imx_scu_call_rpc(imx_sc_irq_ipc_handle, &msg, true); + ret = imx_scu_irq_get_status(i, &irq_status); if (ret) { pr_err("get irq group %d status failed, ret %d\n", i, ret); return; } - irq_status = msg.data.resp.status; if (!irq_status) continue; @@ -97,6 +86,39 @@ 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 Returns 0 for success and < 0 for errors + */ +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
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