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firmware: imx: add resource management api

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

Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Peng Fan 2020-06-05 09:59:31 +08:00 committed by Shawn Guo
parent a8dfca1e71
commit 169caf6925
4 changed files with 116 additions and 1 deletions
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2
drivers/firmware/imx/Makefile
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@ -1,4 +1,4 @@
# 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

45
drivers/firmware/imx/rm.c Normal file
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@ -0,0 +1,45 @@
// 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);

1
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);

69
include/linux/firmware/imx/svc/rm.h Normal file
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@ -0,0 +1,69 @@
/* 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