Commit 169caf69 authored by Peng Fan's avatar Peng Fan Committed by Shawn Guo
Browse files

firmware: imx: add resource management api 



Add resource management API, when we have multiple
partition running together, resources not owned to current
partition should not be used.

Reviewed-by: default avatarLeonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: default avatarDong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: default avatarPeng Fan <peng.fan@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent a8dfca1e

drivers/firmware/imx/Makefile

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# 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

drivers/firmware/imx/rm.c

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// 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);

include/linux/firmware/imx/sci.h

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@@ -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);

include/linux/firmware/imx/svc/rm.h

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/* 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)

 * Resource Management (RM) function. This includes functions for

 * partitioning resources, pads, and memory regions.

 *

 * RM_SVC (SVC) Resource Management Service

 *

 * Module for the Resource Management (RM) service.

 */



#ifndef _SC_RM_API_H

#define _SC_RM_API_H



#include <linux/firmware/imx/sci.h>



/*

 * This type is used to indicate RPC RM function calls.

 */

enum imx_sc_rm_func {

	IMX_SC_RM_FUNC_UNKNOWN = 0,

	IMX_SC_RM_FUNC_PARTITION_ALLOC = 1,

	IMX_SC_RM_FUNC_SET_CONFIDENTIAL = 31,

	IMX_SC_RM_FUNC_PARTITION_FREE = 2,

	IMX_SC_RM_FUNC_GET_DID = 26,

	IMX_SC_RM_FUNC_PARTITION_STATIC = 3,

	IMX_SC_RM_FUNC_PARTITION_LOCK = 4,

	IMX_SC_RM_FUNC_GET_PARTITION = 5,

	IMX_SC_RM_FUNC_SET_PARENT = 6,

	IMX_SC_RM_FUNC_MOVE_ALL = 7,

	IMX_SC_RM_FUNC_ASSIGN_RESOURCE = 8,

	IMX_SC_RM_FUNC_SET_RESOURCE_MOVABLE = 9,

	IMX_SC_RM_FUNC_SET_SUBSYS_RSRC_MOVABLE = 28,

	IMX_SC_RM_FUNC_SET_MASTER_ATTRIBUTES = 10,

	IMX_SC_RM_FUNC_SET_MASTER_SID = 11,

	IMX_SC_RM_FUNC_SET_PERIPHERAL_PERMISSIONS = 12,

	IMX_SC_RM_FUNC_IS_RESOURCE_OWNED = 13,

	IMX_SC_RM_FUNC_GET_RESOURCE_OWNER = 33,

	IMX_SC_RM_FUNC_IS_RESOURCE_MASTER = 14,

	IMX_SC_RM_FUNC_IS_RESOURCE_PERIPHERAL = 15,

	IMX_SC_RM_FUNC_GET_RESOURCE_INFO = 16,

	IMX_SC_RM_FUNC_MEMREG_ALLOC = 17,

	IMX_SC_RM_FUNC_MEMREG_SPLIT = 29,

	IMX_SC_RM_FUNC_MEMREG_FRAG = 32,

	IMX_SC_RM_FUNC_MEMREG_FREE = 18,

	IMX_SC_RM_FUNC_FIND_MEMREG = 30,

	IMX_SC_RM_FUNC_ASSIGN_MEMREG = 19,

	IMX_SC_RM_FUNC_SET_MEMREG_PERMISSIONS = 20,

	IMX_SC_RM_FUNC_IS_MEMREG_OWNED = 21,

	IMX_SC_RM_FUNC_GET_MEMREG_INFO = 22,

	IMX_SC_RM_FUNC_ASSIGN_PAD = 23,

	IMX_SC_RM_FUNC_SET_PAD_MOVABLE = 24,

	IMX_SC_RM_FUNC_IS_PAD_OWNED = 25,

	IMX_SC_RM_FUNC_DUMP = 27,

};



#if IS_ENABLED(CONFIG_IMX_SCU)

bool imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource);

#else

static inline bool

imx_sc_rm_is_resource_owned(struct imx_sc_ipc *ipc, u16 resource)

{

	return true;

}

#endif

#endif