72d7288061
Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
/*
|
|
* ARConnect IP Support (Multi core enabler: Cross core IPI, RTC ...)
|
|
*
|
|
* Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef __ASM_MCIP_H
|
|
#define __ASM_MCIP_H
|
|
|
|
#ifdef CONFIG_ISA_ARCV2
|
|
|
|
#include <asm/arcregs.h>
|
|
|
|
#define ARC_REG_MCIP_BCR 0x0d0
|
|
#define ARC_REG_MCIP_CMD 0x600
|
|
#define ARC_REG_MCIP_WDATA 0x601
|
|
#define ARC_REG_MCIP_READBACK 0x602
|
|
|
|
struct mcip_cmd {
|
|
#ifdef CONFIG_CPU_BIG_ENDIAN
|
|
unsigned int pad:8, param:16, cmd:8;
|
|
#else
|
|
unsigned int cmd:8, param:16, pad:8;
|
|
#endif
|
|
|
|
#define CMD_INTRPT_GENERATE_IRQ 0x01
|
|
#define CMD_INTRPT_GENERATE_ACK 0x02
|
|
#define CMD_INTRPT_READ_STATUS 0x03
|
|
#define CMD_INTRPT_CHECK_SOURCE 0x04
|
|
|
|
/* Semaphore Commands */
|
|
#define CMD_SEMA_CLAIM_AND_READ 0x11
|
|
#define CMD_SEMA_RELEASE 0x12
|
|
|
|
#define CMD_DEBUG_SET_MASK 0x34
|
|
#define CMD_DEBUG_SET_SELECT 0x36
|
|
|
|
#define CMD_GRTC_READ_LO 0x42
|
|
#define CMD_GRTC_READ_HI 0x43
|
|
|
|
#define CMD_IDU_ENABLE 0x71
|
|
#define CMD_IDU_DISABLE 0x72
|
|
#define CMD_IDU_SET_MODE 0x74
|
|
#define CMD_IDU_SET_DEST 0x76
|
|
#define CMD_IDU_SET_MASK 0x7C
|
|
|
|
#define IDU_M_TRIG_LEVEL 0x0
|
|
#define IDU_M_TRIG_EDGE 0x1
|
|
|
|
#define IDU_M_DISTRI_RR 0x0
|
|
#define IDU_M_DISTRI_DEST 0x2
|
|
};
|
|
|
|
/*
|
|
* MCIP programming model
|
|
*
|
|
* - Simple commands write {cmd:8,param:16} to MCIP_CMD aux reg
|
|
* (param could be irq, common_irq, core_id ...)
|
|
* - More involved commands setup MCIP_WDATA with cmd specific data
|
|
* before invoking the simple command
|
|
*/
|
|
static inline void __mcip_cmd(unsigned int cmd, unsigned int param)
|
|
{
|
|
struct mcip_cmd buf;
|
|
|
|
buf.pad = 0;
|
|
buf.cmd = cmd;
|
|
buf.param = param;
|
|
|
|
WRITE_AUX(ARC_REG_MCIP_CMD, buf);
|
|
}
|
|
|
|
/*
|
|
* Setup additional data for a cmd
|
|
* Callers need to lock to ensure atomicity
|
|
*/
|
|
static inline void __mcip_cmd_data(unsigned int cmd, unsigned int param,
|
|
unsigned int data)
|
|
{
|
|
write_aux_reg(ARC_REG_MCIP_WDATA, data);
|
|
|
|
__mcip_cmd(cmd, param);
|
|
}
|
|
|
|
extern void mcip_init_early_smp(void);
|
|
extern void mcip_init_smp(unsigned int cpu);
|
|
|
|
#endif
|
|
|
|
#endif
|