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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
* Copyright (C) 2004, 2007-2010, 2011-2012 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.
*
* Rajeshwar Ranga: Interrupt Distribution Unit API's
*/
#ifndef __PLAT_ARCFPGA_SMP_H
#define __PLAT_ARCFPGA_SMP_H
#ifdef CONFIG_SMP
#include <linux/types.h>
#include <asm/arcregs.h>
#define ARC_AUX_IDU_REG_CMD 0x2000
#define ARC_AUX_IDU_REG_PARAM 0x2001
#define ARC_AUX_XTL_REG_CMD 0x2002
#define ARC_AUX_XTL_REG_PARAM 0x2003
#define ARC_REG_MP_BCR 0x2021
#define ARC_XTL_CMD_WRITE_PC 0x04
#define ARC_XTL_CMD_CLEAR_HALT 0x02
/*
* Build Configuration Register which identifies the sub-components
*/
struct bcr_mp {
#ifdef CONFIG_CPU_BIG_ENDIAN
unsigned int mp_arch:16, pad:5, sdu:1, idu:1, scu:1, ver:8;
#else
unsigned int ver:8, scu:1, idu:1, sdu:1, pad:5, mp_arch:16;
#endif
};
/* IDU supports 256 common interrupts */
#define NR_IDU_IRQS 256
/*
* The Aux Regs layout is same bit-by-bit in both BE/LE modes.
* However when casted as a bitfield encoded "C" struct, gcc treats it as
* memory, generating different code for BE/LE, requiring strcture adj (see
* include/asm/arcregs.h)
*
* However when manually "carving" the value for a Aux, no special handling
* of BE is needed because of the property discribed above
*/
#define IDU_SET_COMMAND(irq, cmd) \
do { \
uint32_t __val; \
__val = (((irq & 0xFF) << 8) | (cmd & 0xFF)); \
write_aux_reg(ARC_AUX_IDU_REG_CMD, __val); \
} while (0)
#define IDU_SET_PARAM(par) write_aux_reg(ARC_AUX_IDU_REG_PARAM, par)
#define IDU_GET_PARAM() read_aux_reg(ARC_AUX_IDU_REG_PARAM)
/* IDU Commands */
#define IDU_DISABLE 0x00
#define IDU_ENABLE 0x01
#define IDU_IRQ_CLEAR 0x02
#define IDU_IRQ_ASSERT 0x03
#define IDU_IRQ_WMODE 0x04
#define IDU_IRQ_STATUS 0x05
#define IDU_IRQ_ACK 0x06
#define IDU_IRQ_PEND 0x07
#define IDU_IRQ_RMODE 0x08
#define IDU_IRQ_WBITMASK 0x09
#define IDU_IRQ_RBITMASK 0x0A
#define idu_enable() IDU_SET_COMMAND(0, IDU_ENABLE)
#define idu_disable() IDU_SET_COMMAND(0, IDU_DISABLE)
#define idu_irq_assert(irq) IDU_SET_COMMAND((irq), IDU_IRQ_ASSERT)
#define idu_irq_clear(irq) IDU_SET_COMMAND((irq), IDU_IRQ_CLEAR)
/* IDU Interrupt Mode - Destination Encoding */
#define IDU_IRQ_MOD_DISABLE 0x00
#define IDU_IRQ_MOD_ROUND_RECP 0x01
#define IDU_IRQ_MOD_TCPU_FIRSTRECP 0x02
#define IDU_IRQ_MOD_TCPU_ALLRECP 0x03
/* IDU Interrupt Mode - Triggering Mode */
#define IDU_IRQ_MODE_LEVEL_TRIG 0x00
#define IDU_IRQ_MODE_PULSE_TRIG 0x01
#define IDU_IRQ_MODE_PARAM(dest_mode, trig_mode) \
(((trig_mode & 0x01) << 15) | (dest_mode & 0xFF))
struct idu_irq_config {
uint8_t irq;
uint8_t dest_mode;
uint8_t trig_mode;
};
struct idu_irq_status {
uint8_t irq;
bool enabled;
bool status;
bool ack;
bool pend;
uint8_t next_rr;
};
extern void idu_irq_set_tgtcpu(uint8_t irq, uint32_t mask);
extern void idu_irq_set_mode(uint8_t irq, uint8_t dest_mode, uint8_t trig_mode);
extern void iss_model_init_smp(unsigned int cpu);
#endif /* CONFIG_SMP */
#endif
|
