mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-24 11:34:50 +08:00
f5bfeff446
The imx SC api strongly assumes that messages are composed out of
4-bytes words but some of our message structs have odd sizeofs.
This produces many oopses with CONFIG_KASAN=y.
Fix by marking with __aligned(4).
Fixes: d90bf296ae ("firmware: imx: Add support to start/stop a CPU")
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2016 Freescale Semiconductor, Inc.
|
|
* Copyright 2017~2018 NXP
|
|
* Author: Dong Aisheng <aisheng.dong@nxp.com>
|
|
*
|
|
* File containing client-side RPC functions for the MISC service. These
|
|
* function are ported to clients that communicate to the SC.
|
|
*
|
|
*/
|
|
|
|
#include <linux/firmware/imx/svc/misc.h>
|
|
|
|
struct imx_sc_msg_req_misc_set_ctrl {
|
|
struct imx_sc_rpc_msg hdr;
|
|
u32 ctrl;
|
|
u32 val;
|
|
u16 resource;
|
|
} __packed __aligned(4);
|
|
|
|
struct imx_sc_msg_req_cpu_start {
|
|
struct imx_sc_rpc_msg hdr;
|
|
u32 address_hi;
|
|
u32 address_lo;
|
|
u16 resource;
|
|
u8 enable;
|
|
} __packed __aligned(4);
|
|
|
|
struct imx_sc_msg_req_misc_get_ctrl {
|
|
struct imx_sc_rpc_msg hdr;
|
|
u32 ctrl;
|
|
u16 resource;
|
|
} __packed __aligned(4);
|
|
|
|
struct imx_sc_msg_resp_misc_get_ctrl {
|
|
struct imx_sc_rpc_msg hdr;
|
|
u32 val;
|
|
} __packed __aligned(4);
|
|
|
|
/*
|
|
* This function sets a miscellaneous control value.
|
|
*
|
|
* @param[in] ipc IPC handle
|
|
* @param[in] resource resource the control is associated with
|
|
* @param[in] ctrl control to change
|
|
* @param[in] val value to apply to the control
|
|
*
|
|
* @return Returns 0 for success and < 0 for errors.
|
|
*/
|
|
|
|
int imx_sc_misc_set_control(struct imx_sc_ipc *ipc, u32 resource,
|
|
u8 ctrl, u32 val)
|
|
{
|
|
struct imx_sc_msg_req_misc_set_ctrl msg;
|
|
struct imx_sc_rpc_msg *hdr = &msg.hdr;
|
|
|
|
hdr->ver = IMX_SC_RPC_VERSION;
|
|
hdr->svc = (uint8_t)IMX_SC_RPC_SVC_MISC;
|
|
hdr->func = (uint8_t)IMX_SC_MISC_FUNC_SET_CONTROL;
|
|
hdr->size = 4;
|
|
|
|
msg.ctrl = ctrl;
|
|
msg.val = val;
|
|
msg.resource = resource;
|
|
|
|
return imx_scu_call_rpc(ipc, &msg, true);
|
|
}
|
|
EXPORT_SYMBOL(imx_sc_misc_set_control);
|
|
|
|
/*
|
|
* This function gets a miscellaneous control value.
|
|
*
|
|
* @param[in] ipc IPC handle
|
|
* @param[in] resource resource the control is associated with
|
|
* @param[in] ctrl control to get
|
|
* @param[out] val pointer to return the control value
|
|
*
|
|
* @return Returns 0 for success and < 0 for errors.
|
|
*/
|
|
|
|
int imx_sc_misc_get_control(struct imx_sc_ipc *ipc, u32 resource,
|
|
u8 ctrl, u32 *val)
|
|
{
|
|
struct imx_sc_msg_req_misc_get_ctrl msg;
|
|
struct imx_sc_msg_resp_misc_get_ctrl *resp;
|
|
struct imx_sc_rpc_msg *hdr = &msg.hdr;
|
|
int ret;
|
|
|
|
hdr->ver = IMX_SC_RPC_VERSION;
|
|
hdr->svc = (uint8_t)IMX_SC_RPC_SVC_MISC;
|
|
hdr->func = (uint8_t)IMX_SC_MISC_FUNC_GET_CONTROL;
|
|
hdr->size = 3;
|
|
|
|
msg.ctrl = ctrl;
|
|
msg.resource = resource;
|
|
|
|
ret = imx_scu_call_rpc(ipc, &msg, true);
|
|
if (ret)
|
|
return ret;
|
|
|
|
resp = (struct imx_sc_msg_resp_misc_get_ctrl *)&msg;
|
|
if (val != NULL)
|
|
*val = resp->val;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(imx_sc_misc_get_control);
|
|
|
|
/*
|
|
* This function starts/stops a CPU identified by @resource
|
|
*
|
|
* @param[in] ipc IPC handle
|
|
* @param[in] resource resource the control is associated with
|
|
* @param[in] enable true for start, false for stop
|
|
* @param[in] phys_addr initial instruction address to be executed
|
|
*
|
|
* @return Returns 0 for success and < 0 for errors.
|
|
*/
|
|
int imx_sc_pm_cpu_start(struct imx_sc_ipc *ipc, u32 resource,
|
|
bool enable, u64 phys_addr)
|
|
{
|
|
struct imx_sc_msg_req_cpu_start msg;
|
|
struct imx_sc_rpc_msg *hdr = &msg.hdr;
|
|
|
|
hdr->ver = IMX_SC_RPC_VERSION;
|
|
hdr->svc = IMX_SC_RPC_SVC_PM;
|
|
hdr->func = IMX_SC_PM_FUNC_CPU_START;
|
|
hdr->size = 4;
|
|
|
|
msg.address_hi = phys_addr >> 32;
|
|
msg.address_lo = phys_addr;
|
|
msg.resource = resource;
|
|
msg.enable = enable;
|
|
|
|
return imx_scu_call_rpc(ipc, &msg, true);
|
|
}
|
|
EXPORT_SYMBOL(imx_sc_pm_cpu_start);
|