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
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* header file specific for ddb5476
*
* Copyright (C) 2001 MontaVista Software Inc.
* Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
/*
* Memory map (physical address)
*
* Note most of the following address must be properly aligned by the
* corresponding size. For example, if PCI_IO_SIZE is 16MB, then
* PCI_IO_BASE must be aligned along 16MB boundary.
*/
#define DDB_SDRAM_BASE 0x00000000
#define DDB_SDRAM_SIZE 0x04000000 /* 64MB */
#define DDB_DCS3_BASE 0x04000000 /* flash 1 */
#define DDB_DCS3_SIZE 0x01000000 /* 16MB */
#define DDB_DCS2_BASE 0x05000000 /* flash 2 */
#define DDB_DCS2_SIZE 0x01000000 /* 16MB */
#define DDB_PCI_IO_BASE 0x06000000
#define DDB_PCI_IO_SIZE 0x02000000 /* 32 MB */
#define DDB_PCI_MEM_BASE 0x08000000
#define DDB_PCI_MEM_SIZE 0x08000000 /* 128 MB */
#define DDB_DCS5_BASE 0x13000000 /* DDB status regs */
#define DDB_DCS5_SIZE 0x00200000 /* 2MB, 8-bit */
#define DDB_DCS4_BASE 0x14000000 /* DDB control regs */
#define DDB_DCS4_SIZE 0x00200000 /* 2MB, 8-bit */
#define DDB_INTCS_BASE 0x1fa00000 /* VRC5476 control regs */
#define DDB_INTCS_SIZE 0x00200000 /* 2MB */
#define DDB_BOOTCS_BASE 0x1fc00000 /* Boot ROM / EPROM /Flash */
#define DDB_BOOTCS_SIZE 0x00200000 /* 2 MB - doc says 4MB */
/* aliases */
#define DDB_PCI_CONFIG_BASE DDB_PCI_MEM_BASE
#define DDB_PCI_CONFIG_SIZE DDB_PCI_MEM_SIZE
/* PCI intr ack share PCIW0 with PCI IO */
#define DDB_PCI_IACK_BASE DDB_PCI_IO_BASE
/*
* Interrupt mapping
*
* We have three interrupt controllers:
*
* . CPU itself - 8 sources
* . i8259 - 16 sources
* . vrc5476 - 16 sources
*
* They connected as follows:
* all vrc5476 interrupts are routed to cpu IP2 (by software setting)
* all i2869 are routed to INTC in vrc5476 (by hardware connection)
*
* All VRC5476 PCI interrupts are level-triggered (no ack needed).
* All PCI irq but INTC are active low.
*/
/*
* irq number block assignment
*/
#define NUM_CPU_IRQ 8
#define NUM_I8259_IRQ 16
#define NUM_VRC5476_IRQ 16
#define DDB_IRQ_BASE 0
#define I8259_IRQ_BASE DDB_IRQ_BASE
#define VRC5476_IRQ_BASE (I8259_IRQ_BASE + NUM_I8259_IRQ)
#define CPU_IRQ_BASE (VRC5476_IRQ_BASE + NUM_VRC5476_IRQ)
/*
* vrc5476 irq defs, see page 52-64 of Vrc5074 system controller manual
*/
#define VRC5476_IRQ_CPCE 0 /* cpu parity error */
#define VRC5476_IRQ_CNTD 1 /* cpu no target */
#define VRC5476_IRQ_MCE 2 /* memory check error */
#define VRC5476_IRQ_DMA 3 /* DMA */
#define VRC5476_IRQ_UART 4 /* vrc5476 builtin UART, not used */
#define VRC5476_IRQ_WDOG 5 /* watchdog timer */
#define VRC5476_IRQ_GPT 6 /* general purpose timer */
#define VRC5476_IRQ_LBRT 7 /* local bus read timeout */
#define VRC5476_IRQ_INTA 8 /* PCI INT #A */
#define VRC5476_IRQ_INTB 9 /* PCI INT #B */
#define VRC5476_IRQ_INTC 10 /* PCI INT #C */
#define VRC5476_IRQ_INTD 11 /* PCI INT #D */
#define VRC5476_IRQ_INTE 12 /* PCI INT #E */
#define VRC5476_IRQ_RESERVED_13 13 /* reserved */
#define VRC5476_IRQ_PCIS 14 /* PCI SERR # */
#define VRC5476_IRQ_PCI 15 /* PCI internal error */
/*
* i2859 irq assignment
*/
#define I8259_IRQ_RESERVED_0 0
#define I8259_IRQ_KEYBOARD 1 /* M1543 default */
#define I8259_IRQ_CASCADE 2
#define I8259_IRQ_UART_B 3 /* M1543 default, may conflict with RTC according to schematic diagram */
#define I8259_IRQ_UART_A 4 /* M1543 default */
#define I8259_IRQ_PARALLEL 5 /* M1543 default */
#define I8259_IRQ_RESERVED_6 6
#define I8259_IRQ_RESERVED_7 7
#define I8259_IRQ_RTC 8 /* who set this? */
#define I8259_IRQ_USB 9 /* ddb_setup */
#define I8259_IRQ_PMU 10 /* ddb_setup */
#define I8259_IRQ_RESERVED_11 11
#define I8259_IRQ_RESERVED_12 12 /* m1543_irq_setup */
#define I8259_IRQ_RESERVED_13 13
#define I8259_IRQ_HDC1 14 /* default and ddb_setup */
#define I8259_IRQ_HDC2 15 /* default */
/*
* misc
*/
#define VRC5476_I8259_CASCADE VRC5476_IRQ_INTC
#define CPU_VRC5476_CASCADE 2
#define is_i8259_irq(irq) ((irq) < NUM_I8259_IRQ)
#define nile4_to_irq(n) ((n)+NUM_I8259_IRQ)
#define irq_to_nile4(n) ((n)-NUM_I8259_IRQ)
/*
* low-level irq functions
*/
#ifndef __ASSEMBLY__
extern void nile4_map_irq(int nile4_irq, int cpu_irq);
extern void nile4_map_irq_all(int cpu_irq);
extern void nile4_enable_irq(int nile4_irq);
extern void nile4_disable_irq(int nile4_irq);
extern void nile4_disable_irq_all(void);
extern u16 nile4_get_irq_stat(int cpu_irq);
extern void nile4_enable_irq_output(int cpu_irq);
extern void nile4_disable_irq_output(int cpu_irq);
extern void nile4_set_pci_irq_polarity(int pci_irq, int high);
extern void nile4_set_pci_irq_level_or_edge(int pci_irq, int level);
extern void nile4_clear_irq(int nile4_irq);
extern void nile4_clear_irq_mask(u32 mask);
extern u8 nile4_i8259_iack(void);
extern void nile4_dump_irq_status(void); /* Debug */
#endif /* !__ASSEMBLY__ */
|
