Messages in this thread | | | From | Aisheng Dong <> | Subject | RE: [PATCH V2 2/3] firmware: imx: add resource management api | Date | Thu, 4 Jun 2020 08:16:05 +0000 |
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> From: Peng Fan <peng.fan@nxp.com> > Sent: Wednesday, June 3, 2020 11:32 AM > > Add resource management API, when we have multiple partition running > together, resources not owned to current partition should not be used. > > Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com> > Signed-off-by: Peng Fan <peng.fan@nxp.com> > --- > drivers/firmware/imx/Makefile | 2 +- > drivers/firmware/imx/rm.c | 45 ++++++++++++++++++++++++ > include/linux/firmware/imx/sci.h | 1 + > include/linux/firmware/imx/svc/rm.h | 69 > +++++++++++++++++++++++++++++++++++++ > 4 files changed, 116 insertions(+), 1 deletion(-) create mode 100644 > drivers/firmware/imx/rm.c create mode 100644 > include/linux/firmware/imx/svc/rm.h > > diff --git a/drivers/firmware/imx/Makefile b/drivers/firmware/imx/Makefile > index 08bc9ddfbdfb..17ea3613e142 100644 > --- a/drivers/firmware/imx/Makefile > +++ b/drivers/firmware/imx/Makefile > @@ -1,4 +1,4 @@ > # SPDX-License-Identifier: GPL-2.0 > obj-$(CONFIG_IMX_DSP) += imx-dsp.o > -obj-$(CONFIG_IMX_SCU) += imx-scu.o misc.o imx-scu-irq.o > +obj-$(CONFIG_IMX_SCU) += imx-scu.o misc.o imx-scu-irq.o rm.o > obj-$(CONFIG_IMX_SCU_PD) += scu-pd.o > diff --git a/drivers/firmware/imx/rm.c b/drivers/firmware/imx/rm.c new file > mode 100644 index 000000000000..a12db6ff323b > --- /dev/null > +++ b/drivers/firmware/imx/rm.c > @@ -0,0 +1,45 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* > + * Copyright 2020 NXP > + * > + * File containing client-side RPC functions for the RM service. These > + * function are ported to clients that communicate to the SC. > + */ > + > +#include <linux/firmware/imx/svc/rm.h> > + > +struct imx_sc_msg_rm_rsrc_owned { > + struct imx_sc_rpc_msg hdr; > + u16 resource; > +} __packed __aligned(4); > + > +/* > + * This function check @resource is owned by current partition or not > + * > + * @param[in] ipc IPC handle > + * @param[in] resource resource the control is associated with > + * > + * @return Returns 0 for not owned and 1 for owned. > + */ > +bool imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource) > +{ > + struct imx_sc_msg_rm_rsrc_owned msg; > + struct imx_sc_rpc_msg *hdr = &msg.hdr; > + > + hdr->ver = IMX_SC_RPC_VERSION; > + hdr->svc = IMX_SC_RPC_SVC_RM; > + hdr->func = IMX_SC_RM_FUNC_IS_RESOURCE_OWNED; > + hdr->size = 2; > + > + msg.resource = resource; > + > + /* > + * SCU firmware only returns value 0 or 1 > + * for resource owned check which means not owned or owned. > + * So it is always successful. > + */ > + imx_scu_call_rpc(ipc, &msg, true); > + > + return hdr->func; > +} > +EXPORT_SYMBOL(imx_sc_rm_is_resource_owned); > diff --git a/include/linux/firmware/imx/sci.h b/include/linux/firmware/imx/sci.h > index 3fa418a4ca67..3c459f54a88f 100644 > --- a/include/linux/firmware/imx/sci.h > +++ b/include/linux/firmware/imx/sci.h > @@ -14,6 +14,7 @@ > > #include <linux/firmware/imx/svc/misc.h> #include > <linux/firmware/imx/svc/pm.h> > +#include <linux/firmware/imx/svc/rm.h> > > int imx_scu_enable_general_irq_channel(struct device *dev); int > imx_scu_irq_register_notifier(struct notifier_block *nb); diff --git > a/include/linux/firmware/imx/svc/rm.h b/include/linux/firmware/imx/svc/rm.h > new file mode 100644 > index 000000000000..9924216f3e45 > --- /dev/null > +++ b/include/linux/firmware/imx/svc/rm.h > @@ -0,0 +1,69 @@ > +/* SPDX-License-Identifier: GPL-2.0+ */ > +/* > + * Copyright (C) 2016 Freescale Semiconductor, Inc. > + * Copyright 2017-2020 NXP > + * > + * Header file containing the public API for the System Controller (SC) > + * Power Management (PM) function. This includes functions for power > +state > + * control, clock control, reset control, and wake-up event control.
Fix the code comments. Otherwise: Dong Aisheng <aisheng.dong@nxp.com>
Regards Aisheng
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