aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-mips/ddb5xxx/ddb5xxx.h
blob: 873c03f2c5fe8385340099b2b92a2130a1be63cb (plain)
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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
/*
 * Copyright 2001 MontaVista Software Inc.
 * Author: jsun@mvista.com or jsun@junsun.net
 *
 * Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
 *                    Sony Software Development Center Europe (SDCE), Brussels
 *
 * include/asm-mips/ddb5xxx/ddb5xxx.h
 *     Common header for all NEC DDB 5xxx boards, including 5074, 5476, 5477.
 *
 * 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.
 *
 */

#ifndef __ASM_DDB5XXX_DDB5XXX_H
#define __ASM_DDB5XXX_DDB5XXX_H

#include <linux/config.h>
#include <linux/types.h>

/*
 *  This file is based on the following documentation:
 *
 *	NEC Vrc 5074 System Controller Data Sheet, June 1998
 *
 * [jsun] It is modified so that this file only contains the macros
 * that are true for all DDB 5xxx boards.  The modification is based on
 *
 *	uPD31577(VRC5477) VR5432-SDRAM/PCI Bridge (Luke)
 *	Preliminary Specification Decoment, Rev 1.1, 27 Dec, 2000
 *
 */


#define DDB_BASE		0xbfa00000
#define DDB_SIZE		0x00200000		/* 2 MB */


/*
 *  Physical Device Address Registers (PDARs)
 */

#define DDB_SDRAM0	0x0000	/* SDRAM Bank 0 [R/W] */
#define DDB_SDRAM1	0x0008	/* SDRAM Bank 1 [R/W] */
#define DDB_DCS2	0x0010	/* Device Chip-Select 2 [R/W] */
#define DDB_DCS3	0x0018	/* Device Chip-Select 3 [R/W] */
#define DDB_DCS4	0x0020	/* Device Chip-Select 4 [R/W] */
#define DDB_DCS5	0x0028	/* Device Chip-Select 5 [R/W] */
#define DDB_DCS6	0x0030	/* Device Chip-Select 6 [R/W] */
#define DDB_DCS7	0x0038	/* Device Chip-Select 7 [R/W] */
#define DDB_DCS8	0x0040	/* Device Chip-Select 8 [R/W] */
#define DDB_PCIW0	0x0060	/* PCI Address Window 0 [R/W] */
#define DDB_PCIW1	0x0068	/* PCI Address Window 1 [R/W] */
#define DDB_INTCS	0x0070	/* Controller Internal Registers and Devices */
				/* [R/W] */
#define DDB_BOOTCS	0x0078	/* Boot ROM Chip-Select [R/W] */
/* Vrc5477 has two more, IOPCIW0, IOPCIW1 */

/*
 *  CPU Interface Registers
 */
#define DDB_CPUSTAT	0x0080	/* CPU Status [R/W] */
#define DDB_INTCTRL	0x0088	/* Interrupt Control [R/W] */
#define DDB_INTSTAT0	0x0090	/* Interrupt Status 0 [R] */
#define DDB_INTSTAT1	0x0098	/* Interrupt Status 1 and CPU Interrupt */
				/* Enable [R/W] */
#define DDB_INTCLR	0x00A0	/* Interrupt Clear [R/W] */
#define DDB_INTPPES	0x00A8	/* PCI Interrupt Control [R/W] */


/*
 *  Memory-Interface Registers
 */
#define DDB_MEMCTRL	0x00C0	/* Memory Control */
#define DDB_ACSTIME	0x00C8	/* Memory Access Timing [R/W] */
#define DDB_CHKERR	0x00D0	/* Memory Check Error Status [R] */


/*
 *  PCI-Bus Registers
 */
#define DDB_PCICTRL	0x00E0	/* PCI Control [R/W] */
#define DDB_PCIARB	0x00E8	/* PCI Arbiter [R/W] */
#define DDB_PCIINIT0	0x00F0	/* PCI Master (Initiator) 0 [R/W] */
#define DDB_PCIINIT1	0x00F8	/* PCI Master (Initiator) 1 [R/W] */
#define DDB_PCIERR	0x00B8	/* PCI Error [R/W] */


/*
 *  Local-Bus Registers
 */
#define DDB_LCNFG	0x0100	/* Local Bus Configuration [R/W] */
#define DDB_LCST2	0x0110	/* Local Bus Chip-Select Timing 2 [R/W] */
#define DDB_LCST3	0x0118	/* Local Bus Chip-Select Timing 3 [R/W] */
#define DDB_LCST4	0x0120	/* Local Bus Chip-Select Timing 4 [R/W] */
#define DDB_LCST5	0x0128	/* Local Bus Chip-Select Timing 5 [R/W] */
#define DDB_LCST6	0x0130	/* Local Bus Chip-Select Timing 6 [R/W] */
#define DDB_LCST7	0x0138	/* Local Bus Chip-Select Timing 7 [R/W] */
#define DDB_LCST8	0x0140	/* Local Bus Chip-Select Timing 8 [R/W] */
#define DDB_DCSFN	0x0150	/* Device Chip-Select Muxing and Output */
				/* Enables [R/W] */
#define DDB_DCSIO	0x0158	/* Device Chip-Selects As I/O Bits [R/W] */
#define DDB_BCST	0x0178	/* Local Boot Chip-Select Timing [R/W] */


/*
 *  DMA Registers
 */
#define DDB_DMACTRL0	0x0180	/* DMA Control 0 [R/W] */
#define DDB_DMASRCA0	0x0188	/* DMA Source Address 0 [R/W] */
#define DDB_DMADESA0	0x0190	/* DMA Destination Address 0 [R/W] */
#define DDB_DMACTRL1	0x0198	/* DMA Control 1 [R/W] */
#define DDB_DMASRCA1	0x01A0	/* DMA Source Address 1 [R/W] */
#define DDB_DMADESA1	0x01A8	/* DMA Destination Address 1 [R/W] */


/*
 *  Timer Registers
 */
#define DDB_T0CTRL	0x01C0	/* SDRAM Refresh Control [R/W] */
#define DDB_T0CNTR	0x01C8	/* SDRAM Refresh Counter [R/W] */
#define DDB_T1CTRL	0x01D0	/* CPU-Bus Read Time-Out Control [R/W] */
#define DDB_T1CNTR	0x01D8	/* CPU-Bus Read Time-Out Counter [R/W] */
#define DDB_T2CTRL	0x01E0	/* General-Purpose Timer Control [R/W] */
#define DDB_T2CNTR	0x01E8	/* General-Purpose Timer Counter [R/W] */
#define DDB_T3CTRL	0x01F0	/* Watchdog Timer Control [R/W] */
#define DDB_T3CNTR	0x01F8	/* Watchdog Timer Counter [R/W] */


/*
 *  PCI Configuration Space Registers
 */
#define DDB_PCI_BASE	0x0200

#define DDB_VID		0x0200	/* PCI Vendor ID [R] */
#define DDB_DID		0x0202	/* PCI Device ID [R] */
#define DDB_PCICMD	0x0204	/* PCI Command [R/W] */
#define DDB_PCISTS	0x0206	/* PCI Status [R/W] */
#define DDB_REVID	0x0208	/* PCI Revision ID [R] */
#define DDB_CLASS	0x0209	/* PCI Class Code [R] */
#define DDB_CLSIZ	0x020C	/* PCI Cache Line Size [R/W] */
#define DDB_MLTIM	0x020D	/* PCI Latency Timer [R/W] */
#define DDB_HTYPE	0x020E	/* PCI Header Type [R] */
#define DDB_BIST	0x020F	/* BIST [R] (unimplemented) */
#define DDB_BARC	0x0210	/* PCI Base Address Register Control [R/W] */
#define DDB_BAR0	0x0218	/* PCI Base Address Register 0 [R/W] */
#define DDB_BAR1	0x0220	/* PCI Base Address Register 1 [R/W] */
#define DDB_CIS		0x0228	/* PCI Cardbus CIS Pointer [R] */
				/* (unimplemented) */
#define DDB_SSVID	0x022C	/* PCI Sub-System Vendor ID [R/W] */
#define DDB_SSID	0x022E	/* PCI Sub-System ID [R/W] */
#define DDB_ROM		0x0230	/* Expansion ROM Base Address [R] */
				/* (unimplemented) */
#define DDB_INTLIN	0x023C	/* PCI Interrupt Line [R/W] */
#define DDB_INTPIN	0x023D	/* PCI Interrupt Pin [R] */
#define DDB_MINGNT	0x023E	/* PCI Min_Gnt [R] (unimplemented) */
#define DDB_MAXLAT	0x023F	/* PCI Max_Lat [R] (unimplemented) */
#define DDB_BAR2	0x0240	/* PCI Base Address Register 2 [R/W] */
#define DDB_BAR3	0x0248	/* PCI Base Address Register 3 [R/W] */
#define DDB_BAR4	0x0250	/* PCI Base Address Register 4 [R/W] */
#define DDB_BAR5	0x0258	/* PCI Base Address Register 5 [R/W] */
#define DDB_BAR6	0x0260	/* PCI Base Address Register 6 [R/W] */
#define DDB_BAR7	0x0268	/* PCI Base Address Register 7 [R/W] */
#define DDB_BAR8	0x0270	/* PCI Base Address Register 8 [R/W] */
#define DDB_BARB	0x0278	/* PCI Base Address Register BOOT [R/W] */


/*
 *  Nile 4 Register Access
 */

static inline void ddb_sync(void)
{
/* The DDB5074 doesn't seem to like these accesses. They kill the board on
 * interrupt load
 */
#ifndef CONFIG_DDB5074
    volatile u32 *p = (volatile u32 *)0xbfc00000;
    (void)(*p);
#endif
}

static inline void ddb_out32(u32 offset, u32 val)
{
    *(volatile u32 *)(DDB_BASE+offset) = val;
    ddb_sync();
}

static inline u32 ddb_in32(u32 offset)
{
    u32 val = *(volatile u32 *)(DDB_BASE+offset);
    ddb_sync();
    return val;
}

static inline void ddb_out16(u32 offset, u16 val)
{
    *(volatile u16 *)(DDB_BASE+offset) = val;
    ddb_sync();
}

static inline u16 ddb_in16(u32 offset)
{
    u16 val = *(volatile u16 *)(DDB_BASE+offset);
    ddb_sync();
    return val;
}

static inline void ddb_out8(u32 offset, u8 val)
{
    *(volatile u8 *)(DDB_BASE+offset) = val;
    ddb_sync();
}

static inline u8 ddb_in8(u32 offset)
{
    u8 val = *(volatile u8 *)(DDB_BASE+offset);
    ddb_sync();
    return val;
}


/*
 *  Physical Device Address Registers
 */

extern u32
ddb_calc_pdar(u32 phys, u32 size, int width, int on_memory_bus, int pci_visible);
extern void
ddb_set_pdar(u32 pdar, u32 phys, u32 size, int width,
	     int on_memory_bus, int pci_visible);

/*
 *  PCI Master Registers
 */

#define DDB_PCICMD_IACK		0	/* PCI Interrupt Acknowledge */
#define DDB_PCICMD_IO		1	/* PCI I/O Space */
#define DDB_PCICMD_MEM		3	/* PCI Memory Space */
#define DDB_PCICMD_CFG		5	/* PCI Configuration Space */

/*
 * additional options for pci init reg (no shifting needed)
 */
#define DDB_PCI_CFGTYPE1     0x200   /* for pci init0/1 regs */
#define DDB_PCI_ACCESS_32    0x10    /* for pci init0/1 regs */


extern void ddb_set_pmr(u32 pmr, u32 type, u32 addr, u32 options);

/*
 * we need to reset pci bus when we start up and shutdown
 */
extern void ddb_pci_reset_bus(void);


/*
 * include the board dependent part
 */
#if defined(CONFIG_DDB5074)
#include <asm/ddb5xxx/ddb5074.h>
#elif defined(CONFIG_DDB5476)
#include <asm/ddb5xxx/ddb5476.h>
#elif defined(CONFIG_DDB5477)
#include <asm/ddb5xxx/ddb5477.h>
#else
#error "Unknown DDB board!"
#endif

#endif /* __ASM_DDB5XXX_DDB5XXX_H */