46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2020 NXP
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*
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* File containing client-side RPC functions for the RM service. These
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* function are ported to clients that communicate to the SC.
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*/
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#include <linux/firmware/imx/svc/rm.h>
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struct imx_sc_msg_rm_rsrc_owned {
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struct imx_sc_rpc_msg hdr;
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u16 resource;
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} __packed __aligned(4);
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/*
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* This function check @resource is owned by current partition or not
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*
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* @param[in] ipc IPC handle
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* @param[in] resource resource the control is associated with
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*
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* @return Returns 0 for not owned and 1 for owned.
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*/
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bool imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource)
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{
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struct imx_sc_msg_rm_rsrc_owned msg;
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struct imx_sc_rpc_msg *hdr = &msg.hdr;
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hdr->ver = IMX_SC_RPC_VERSION;
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hdr->svc = IMX_SC_RPC_SVC_RM;
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hdr->func = IMX_SC_RM_FUNC_IS_RESOURCE_OWNED;
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hdr->size = 2;
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msg.resource = resource;
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/*
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* SCU firmware only returns value 0 or 1
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* for resource owned check which means not owned or owned.
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* So it is always successful.
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*/
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imx_scu_call_rpc(ipc, &msg, true);
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return hdr->func;
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}
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EXPORT_SYMBOL(imx_sc_rm_is_resource_owned);
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