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45 lines
1.1 KiB
45 lines
1.1 KiB
// 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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