46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
|
// 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);
|