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
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
|
/*
* Copyright (C) 2009 Lemote, Inc.
* Author: Wu Zhangjin <wuzhangjin@gmail.com>
*
* 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_MACH_LOONGSON_LOONGSON_H
#define __ASM_MACH_LOONGSON_LOONGSON_H
#include <linux/io.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/kconfig.h>
/* loongson internal northbridge initialization */
extern void bonito_irq_init(void);
/* machine-specific reboot/halt operation */
extern void mach_prepare_reboot(void);
extern void mach_prepare_shutdown(void);
/* environment arguments from bootloader */
extern u32 cpu_clock_freq;
extern u32 memsize, highmemsize;
/* loongson-specific command line, env and memory initialization */
extern void __init prom_init_memory(void);
extern void __init prom_init_cmdline(void);
extern void __init prom_init_machtype(void);
extern void __init prom_init_env(void);
#ifdef CONFIG_LOONGSON_UART_BASE
extern unsigned long _loongson_uart_base, loongson_uart_base;
extern void prom_init_loongson_uart_base(void);
#endif
static inline void prom_init_uart_base(void)
{
#ifdef CONFIG_LOONGSON_UART_BASE
prom_init_loongson_uart_base();
#endif
}
/* irq operation functions */
extern void bonito_irqdispatch(void);
extern void __init bonito_irq_init(void);
extern void __init mach_init_irq(void);
extern void mach_irq_dispatch(unsigned int pending);
extern int mach_i8259_irq(void);
/* We need this in some places... */
#define delay() ({ \
int x; \
for (x = 0; x < 100000; x++) \
__asm__ __volatile__(""); \
})
#define LOONGSON_REG(x) \
(*(volatile u32 *)((char *)CKSEG1ADDR(LOONGSON_REG_BASE) + (x)))
#define LOONGSON_IRQ_BASE 32
#define LOONGSON2_PERFCNT_IRQ (MIPS_CPU_IRQ_BASE + 6) /* cpu perf counter */
#include <linux/interrupt.h>
static inline void do_perfcnt_IRQ(void)
{
#if IS_ENABLED(CONFIG_OPROFILE)
do_IRQ(LOONGSON2_PERFCNT_IRQ);
#endif
}
#define LOONGSON_FLASH_BASE 0x1c000000
#define LOONGSON_FLASH_SIZE 0x02000000 /* 32M */
#define LOONGSON_FLASH_TOP (LOONGSON_FLASH_BASE+LOONGSON_FLASH_SIZE-1)
#define LOONGSON_LIO0_BASE 0x1e000000
#define LOONGSON_LIO0_SIZE 0x01C00000 /* 28M */
#define LOONGSON_LIO0_TOP (LOONGSON_LIO0_BASE+LOONGSON_LIO0_SIZE-1)
#define LOONGSON_BOOT_BASE 0x1fc00000
#define LOONGSON_BOOT_SIZE 0x00100000 /* 1M */
#define LOONGSON_BOOT_TOP (LOONGSON_BOOT_BASE+LOONGSON_BOOT_SIZE-1)
#define LOONGSON_REG_BASE 0x1fe00000
#define LOONGSON_REG_SIZE 0x00100000 /* 256Bytes + 256Bytes + ??? */
#define LOONGSON_REG_TOP (LOONGSON_REG_BASE+LOONGSON_REG_SIZE-1)
#define LOONGSON_LIO1_BASE 0x1ff00000
#define LOONGSON_LIO1_SIZE 0x00100000 /* 1M */
#define LOONGSON_LIO1_TOP (LOONGSON_LIO1_BASE+LOONGSON_LIO1_SIZE-1)
#define LOONGSON_PCILO0_BASE 0x10000000
#define LOONGSON_PCILO1_BASE 0x14000000
#define LOONGSON_PCILO2_BASE 0x18000000
#define LOONGSON_PCILO_BASE LOONGSON_PCILO0_BASE
#define LOONGSON_PCILO_SIZE 0x0c000000 /* 64M * 3 */
#define LOONGSON_PCILO_TOP (LOONGSON_PCILO0_BASE+LOONGSON_PCILO_SIZE-1)
#define LOONGSON_PCICFG_BASE 0x1fe80000
#define LOONGSON_PCICFG_SIZE 0x00000800 /* 2K */
#define LOONGSON_PCICFG_TOP (LOONGSON_PCICFG_BASE+LOONGSON_PCICFG_SIZE-1)
#define LOONGSON_PCIIO_BASE 0x1fd00000
#define LOONGSON_PCIIO_SIZE 0x00100000 /* 1M */
#define LOONGSON_PCIIO_TOP (LOONGSON_PCIIO_BASE+LOONGSON_PCIIO_SIZE-1)
/* Loongson Register Bases */
#define LOONGSON_PCICONFIGBASE 0x00
#define LOONGSON_REGBASE 0x100
/* PCI Configuration Registers */
#define LOONGSON_PCI_REG(x) LOONGSON_REG(LOONGSON_PCICONFIGBASE + (x))
#define LOONGSON_PCIDID LOONGSON_PCI_REG(0x00)
#define LOONGSON_PCICMD LOONGSON_PCI_REG(0x04)
#define LOONGSON_PCICLASS LOONGSON_PCI_REG(0x08)
#define LOONGSON_PCILTIMER LOONGSON_PCI_REG(0x0c)
#define LOONGSON_PCIBASE0 LOONGSON_PCI_REG(0x10)
#define LOONGSON_PCIBASE1 LOONGSON_PCI_REG(0x14)
#define LOONGSON_PCIBASE2 LOONGSON_PCI_REG(0x18)
#define LOONGSON_PCIBASE3 LOONGSON_PCI_REG(0x1c)
#define LOONGSON_PCIBASE4 LOONGSON_PCI_REG(0x20)
#define LOONGSON_PCIEXPRBASE LOONGSON_PCI_REG(0x30)
#define LOONGSON_PCIINT LOONGSON_PCI_REG(0x3c)
#define LOONGSON_PCI_ISR4C LOONGSON_PCI_REG(0x4c)
#define LOONGSON_PCICMD_PERR_CLR 0x80000000
#define LOONGSON_PCICMD_SERR_CLR 0x40000000
#define LOONGSON_PCICMD_MABORT_CLR 0x20000000
#define LOONGSON_PCICMD_MTABORT_CLR 0x10000000
#define LOONGSON_PCICMD_TABORT_CLR 0x08000000
#define LOONGSON_PCICMD_MPERR_CLR 0x01000000
#define LOONGSON_PCICMD_PERRRESPEN 0x00000040
#define LOONGSON_PCICMD_ASTEPEN 0x00000080
#define LOONGSON_PCICMD_SERREN 0x00000100
#define LOONGSON_PCILTIMER_BUSLATENCY 0x0000ff00
#define LOONGSON_PCILTIMER_BUSLATENCY_SHIFT 8
/* Loongson h/w Configuration */
#define LOONGSON_GENCFG_OFFSET 0x4
#define LOONGSON_GENCFG LOONGSON_REG(LOONGSON_REGBASE + LOONGSON_GENCFG_OFFSET)
#define LOONGSON_GENCFG_DEBUGMODE 0x00000001
#define LOONGSON_GENCFG_SNOOPEN 0x00000002
#define LOONGSON_GENCFG_CPUSELFRESET 0x00000004
#define LOONGSON_GENCFG_FORCE_IRQA 0x00000008
#define LOONGSON_GENCFG_IRQA_ISOUT 0x00000010
#define LOONGSON_GENCFG_IRQA_FROM_INT1 0x00000020
#define LOONGSON_GENCFG_BYTESWAP 0x00000040
#define LOONGSON_GENCFG_UNCACHED 0x00000080
#define LOONGSON_GENCFG_PREFETCHEN 0x00000100
#define LOONGSON_GENCFG_WBEHINDEN 0x00000200
#define LOONGSON_GENCFG_CACHEALG 0x00000c00
#define LOONGSON_GENCFG_CACHEALG_SHIFT 10
#define LOONGSON_GENCFG_PCIQUEUE 0x00001000
#define LOONGSON_GENCFG_CACHESTOP 0x00002000
#define LOONGSON_GENCFG_MSTRBYTESWAP 0x00004000
#define LOONGSON_GENCFG_BUSERREN 0x00008000
#define LOONGSON_GENCFG_NORETRYTIMEOUT 0x00010000
#define LOONGSON_GENCFG_SHORTCOPYTIMEOUT 0x00020000
/* PCI address map control */
#define LOONGSON_PCIMAP LOONGSON_REG(LOONGSON_REGBASE + 0x10)
#define LOONGSON_PCIMEMBASECFG LOONGSON_REG(LOONGSON_REGBASE + 0x14)
#define LOONGSON_PCIMAP_CFG LOONGSON_REG(LOONGSON_REGBASE + 0x18)
/* GPIO Regs - r/w */
#define LOONGSON_GPIODATA LOONGSON_REG(LOONGSON_REGBASE + 0x1c)
#define LOONGSON_GPIOIE LOONGSON_REG(LOONGSON_REGBASE + 0x20)
/* ICU Configuration Regs - r/w */
#define LOONGSON_INTEDGE LOONGSON_REG(LOONGSON_REGBASE + 0x24)
#define LOONGSON_INTSTEER LOONGSON_REG(LOONGSON_REGBASE + 0x28)
#define LOONGSON_INTPOL LOONGSON_REG(LOONGSON_REGBASE + 0x2c)
/* ICU Enable Regs - IntEn & IntISR are r/o. */
#define LOONGSON_INTENSET LOONGSON_REG(LOONGSON_REGBASE + 0x30)
#define LOONGSON_INTENCLR LOONGSON_REG(LOONGSON_REGBASE + 0x34)
#define LOONGSON_INTEN LOONGSON_REG(LOONGSON_REGBASE + 0x38)
#define LOONGSON_INTISR LOONGSON_REG(LOONGSON_REGBASE + 0x3c)
/* ICU */
#define LOONGSON_ICU_MBOXES 0x0000000f
#define LOONGSON_ICU_MBOXES_SHIFT 0
#define LOONGSON_ICU_DMARDY 0x00000010
#define LOONGSON_ICU_DMAEMPTY 0x00000020
#define LOONGSON_ICU_COPYRDY 0x00000040
#define LOONGSON_ICU_COPYEMPTY 0x00000080
#define LOONGSON_ICU_COPYERR 0x00000100
#define LOONGSON_ICU_PCIIRQ 0x00000200
#define LOONGSON_ICU_MASTERERR 0x00000400
#define LOONGSON_ICU_SYSTEMERR 0x00000800
#define LOONGSON_ICU_DRAMPERR 0x00001000
#define LOONGSON_ICU_RETRYERR 0x00002000
#define LOONGSON_ICU_GPIOS 0x01ff0000
#define LOONGSON_ICU_GPIOS_SHIFT 16
#define LOONGSON_ICU_GPINS 0x7e000000
#define LOONGSON_ICU_GPINS_SHIFT 25
#define LOONGSON_ICU_MBOX(N) (1<<(LOONGSON_ICU_MBOXES_SHIFT+(N)))
#define LOONGSON_ICU_GPIO(N) (1<<(LOONGSON_ICU_GPIOS_SHIFT+(N)))
#define LOONGSON_ICU_GPIN(N) (1<<(LOONGSON_ICU_GPINS_SHIFT+(N)))
/* PCI prefetch window base & mask */
#define LOONGSON_MEM_WIN_BASE_L LOONGSON_REG(LOONGSON_REGBASE + 0x40)
#define LOONGSON_MEM_WIN_BASE_H LOONGSON_REG(LOONGSON_REGBASE + 0x44)
#define LOONGSON_MEM_WIN_MASK_L LOONGSON_REG(LOONGSON_REGBASE + 0x48)
#define LOONGSON_MEM_WIN_MASK_H LOONGSON_REG(LOONGSON_REGBASE + 0x4c)
/* PCI_Hit*_Sel_* */
#define LOONGSON_PCI_HIT0_SEL_L LOONGSON_REG(LOONGSON_REGBASE + 0x50)
#define LOONGSON_PCI_HIT0_SEL_H LOONGSON_REG(LOONGSON_REGBASE + 0x54)
#define LOONGSON_PCI_HIT1_SEL_L LOONGSON_REG(LOONGSON_REGBASE + 0x58)
#define LOONGSON_PCI_HIT1_SEL_H LOONGSON_REG(LOONGSON_REGBASE + 0x5c)
#define LOONGSON_PCI_HIT2_SEL_L LOONGSON_REG(LOONGSON_REGBASE + 0x60)
#define LOONGSON_PCI_HIT2_SEL_H LOONGSON_REG(LOONGSON_REGBASE + 0x64)
/* PXArb Config & Status */
#define LOONGSON_PXARB_CFG LOONGSON_REG(LOONGSON_REGBASE + 0x68)
#define LOONGSON_PXARB_STATUS LOONGSON_REG(LOONGSON_REGBASE + 0x6c)
/* pcimap */
#define LOONGSON_PCIMAP_PCIMAP_LO0 0x0000003f
#define LOONGSON_PCIMAP_PCIMAP_LO0_SHIFT 0
#define LOONGSON_PCIMAP_PCIMAP_LO1 0x00000fc0
#define LOONGSON_PCIMAP_PCIMAP_LO1_SHIFT 6
#define LOONGSON_PCIMAP_PCIMAP_LO2 0x0003f000
#define LOONGSON_PCIMAP_PCIMAP_LO2_SHIFT 12
#define LOONGSON_PCIMAP_PCIMAP_2 0x00040000
#define LOONGSON_PCIMAP_WIN(WIN, ADDR) \
((((ADDR)>>26) & LOONGSON_PCIMAP_PCIMAP_LO0) << ((WIN)*6))
#ifdef CONFIG_CPU_SUPPORTS_CPUFREQ
#include <linux/cpufreq.h>
extern struct cpufreq_frequency_table loongson2_clockmod_table[];
/* Chip Config */
#define LOONGSON_CHIPCFG0 LOONGSON_REG(LOONGSON_REGBASE + 0x80)
#endif
/*
* address windows configuration module
*
* loongson2e do not have this module
*/
#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
/* address window config module base address */
#define LOONGSON_ADDRWINCFG_BASE 0x3ff00000ul
#define LOONGSON_ADDRWINCFG_SIZE 0x180
extern unsigned long _loongson_addrwincfg_base;
#define LOONGSON_ADDRWINCFG(offset) \
(*(volatile u64 *)(_loongson_addrwincfg_base + (offset)))
#define CPU_WIN0_BASE LOONGSON_ADDRWINCFG(0x00)
#define CPU_WIN1_BASE LOONGSON_ADDRWINCFG(0x08)
#define CPU_WIN2_BASE LOONGSON_ADDRWINCFG(0x10)
#define CPU_WIN3_BASE LOONGSON_ADDRWINCFG(0x18)
#define CPU_WIN0_MASK LOONGSON_ADDRWINCFG(0x20)
#define CPU_WIN1_MASK LOONGSON_ADDRWINCFG(0x28)
#define CPU_WIN2_MASK LOONGSON_ADDRWINCFG(0x30)
#define CPU_WIN3_MASK LOONGSON_ADDRWINCFG(0x38)
#define CPU_WIN0_MMAP LOONGSON_ADDRWINCFG(0x40)
#define CPU_WIN1_MMAP LOONGSON_ADDRWINCFG(0x48)
#define CPU_WIN2_MMAP LOONGSON_ADDRWINCFG(0x50)
#define CPU_WIN3_MMAP LOONGSON_ADDRWINCFG(0x58)
#define PCIDMA_WIN0_BASE LOONGSON_ADDRWINCFG(0x60)
#define PCIDMA_WIN1_BASE LOONGSON_ADDRWINCFG(0x68)
#define PCIDMA_WIN2_BASE LOONGSON_ADDRWINCFG(0x70)
#define PCIDMA_WIN3_BASE LOONGSON_ADDRWINCFG(0x78)
#define PCIDMA_WIN0_MASK LOONGSON_ADDRWINCFG(0x80)
#define PCIDMA_WIN1_MASK LOONGSON_ADDRWINCFG(0x88)
#define PCIDMA_WIN2_MASK LOONGSON_ADDRWINCFG(0x90)
#define PCIDMA_WIN3_MASK LOONGSON_ADDRWINCFG(0x98)
#define PCIDMA_WIN0_MMAP LOONGSON_ADDRWINCFG(0xa0)
#define PCIDMA_WIN1_MMAP LOONGSON_ADDRWINCFG(0xa8)
#define PCIDMA_WIN2_MMAP LOONGSON_ADDRWINCFG(0xb0)
#define PCIDMA_WIN3_MMAP LOONGSON_ADDRWINCFG(0xb8)
#define ADDRWIN_WIN0 0
#define ADDRWIN_WIN1 1
#define ADDRWIN_WIN2 2
#define ADDRWIN_WIN3 3
#define ADDRWIN_MAP_DST_DDR 0
#define ADDRWIN_MAP_DST_PCI 1
#define ADDRWIN_MAP_DST_LIO 1
/*
* s: CPU, PCIDMA
* d: DDR, PCI, LIO
* win: 0, 1, 2, 3
* src: map source
* dst: map destination
* size: ~mask + 1
*/
#define LOONGSON_ADDRWIN_CFG(s, d, w, src, dst, size) do {\
s##_WIN##w##_BASE = (src); \
s##_WIN##w##_MMAP = (dst) | ADDRWIN_MAP_DST_##d; \
s##_WIN##w##_MASK = ~(size-1); \
} while (0)
#define LOONGSON_ADDRWIN_CPUTOPCI(win, src, dst, size) \
LOONGSON_ADDRWIN_CFG(CPU, PCI, win, src, dst, size)
#define LOONGSON_ADDRWIN_CPUTODDR(win, src, dst, size) \
LOONGSON_ADDRWIN_CFG(CPU, DDR, win, src, dst, size)
#define LOONGSON_ADDRWIN_PCITODDR(win, src, dst, size) \
LOONGSON_ADDRWIN_CFG(PCIDMA, DDR, win, src, dst, size)
#endif /* ! CONFIG_CPU_SUPPORTS_ADDRWINCFG */
#endif /* __ASM_MACH_LOONGSON_LOONGSON_H */
|
