Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright 2020 NXP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * File containing client-side RPC functions for the RM service. These
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * function are ported to clients that communicate to the SC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/firmware/imx/svc/rm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) struct imx_sc_msg_rm_rsrc_owned {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	struct imx_sc_rpc_msg hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	u16 resource;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) } __packed __aligned(4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * This function check @resource is owned by current partition or not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * @param[in]     ipc         IPC handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * @param[in]     resource    resource the control is associated with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  * @return Returns 0 for not owned and 1 for owned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) bool imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	struct imx_sc_msg_rm_rsrc_owned msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	struct imx_sc_rpc_msg *hdr = &msg.hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	hdr->ver = IMX_SC_RPC_VERSION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	hdr->svc = IMX_SC_RPC_SVC_RM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	hdr->func = IMX_SC_RM_FUNC_IS_RESOURCE_OWNED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	hdr->size = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	msg.resource = resource;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	 * SCU firmware only returns value 0 or 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	 * for resource owned check which means not owned or owned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	 * So it is always successful.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	imx_scu_call_rpc(ipc, &msg, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	return hdr->func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) EXPORT_SYMBOL(imx_sc_rm_is_resource_owned);