forked from luck/tmp_suning_uos_patched
26b8f99623
MCIP now registers it's own probe callback with smp_ops.init_early_smp() which is called by ARC common code, so no need for platforms to do that. This decouples the platforms and MCIP and helps confine MCIP details to it's own file. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
/*
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* ARConnect IP Support (Multi core enabler: Cross core IPI, RTC ...)
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*
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* Copyright (C) 2014-15 Synopsys, Inc. (www.synopsys.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_MCIP_H
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#define __ASM_MCIP_H
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#ifdef CONFIG_ISA_ARCV2
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#include <asm/arcregs.h>
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#define ARC_REG_MCIP_BCR 0x0d0
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#define ARC_REG_MCIP_CMD 0x600
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#define ARC_REG_MCIP_WDATA 0x601
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#define ARC_REG_MCIP_READBACK 0x602
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struct mcip_cmd {
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#ifdef CONFIG_CPU_BIG_ENDIAN
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unsigned int pad:8, param:16, cmd:8;
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#else
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unsigned int cmd:8, param:16, pad:8;
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#endif
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#define CMD_INTRPT_GENERATE_IRQ 0x01
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#define CMD_INTRPT_GENERATE_ACK 0x02
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#define CMD_INTRPT_READ_STATUS 0x03
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#define CMD_INTRPT_CHECK_SOURCE 0x04
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/* Semaphore Commands */
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#define CMD_SEMA_CLAIM_AND_READ 0x11
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#define CMD_SEMA_RELEASE 0x12
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#define CMD_DEBUG_SET_MASK 0x34
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#define CMD_DEBUG_SET_SELECT 0x36
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#define CMD_GRTC_READ_LO 0x42
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#define CMD_GRTC_READ_HI 0x43
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#define CMD_IDU_ENABLE 0x71
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#define CMD_IDU_DISABLE 0x72
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#define CMD_IDU_SET_MODE 0x74
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#define CMD_IDU_SET_DEST 0x76
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#define CMD_IDU_SET_MASK 0x7C
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#define IDU_M_TRIG_LEVEL 0x0
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#define IDU_M_TRIG_EDGE 0x1
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#define IDU_M_DISTRI_RR 0x0
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#define IDU_M_DISTRI_DEST 0x2
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};
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/*
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* MCIP programming model
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*
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* - Simple commands write {cmd:8,param:16} to MCIP_CMD aux reg
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* (param could be irq, common_irq, core_id ...)
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* - More involved commands setup MCIP_WDATA with cmd specific data
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* before invoking the simple command
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*/
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static inline void __mcip_cmd(unsigned int cmd, unsigned int param)
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{
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struct mcip_cmd buf;
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buf.pad = 0;
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buf.cmd = cmd;
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buf.param = param;
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WRITE_AUX(ARC_REG_MCIP_CMD, buf);
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}
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/*
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* Setup additional data for a cmd
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* Callers need to lock to ensure atomicity
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*/
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static inline void __mcip_cmd_data(unsigned int cmd, unsigned int param,
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unsigned int data)
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{
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write_aux_reg(ARC_REG_MCIP_WDATA, data);
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__mcip_cmd(cmd, param);
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}
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extern void mcip_init_smp(unsigned int cpu);
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#endif
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#endif
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