1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/*
* 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_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
|
