1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Copyright (C) 2009 Lemote, Inc.
4  * Author: Wu Zhangjin <wuzhangjin@gmail.com>
5  */
6 
7 #ifndef __ASM_MACH_LOONGSON2EF_LOONGSON_H
8 #define __ASM_MACH_LOONGSON2EF_LOONGSON_H
9 
10 #include <linux/io.h>
11 #include <linux/init.h>
12 #include <linux/irq.h>
13 
14 /* loongson internal northbridge initialization */
15 extern void bonito_irq_init(void);
16 
17 /* machine-specific reboot/halt operation */
18 extern void mach_prepare_reboot(void);
19 extern void mach_prepare_shutdown(void);
20 
21 /* environment arguments from bootloader */
22 extern u32 cpu_clock_freq;
23 extern u32 memsize, highmemsize;
24 
25 /* loongson-specific command line, env and memory initialization */
26 extern void __init prom_init_memory(void);
27 extern void __init prom_init_machtype(void);
28 extern void __init prom_init_env(void);
29 #ifdef CONFIG_LOONGSON_UART_BASE
30 extern unsigned long _loongson_uart_base, loongson_uart_base;
31 extern void prom_init_loongson_uart_base(void);
32 #endif
33 
prom_init_uart_base(void)34 static inline void prom_init_uart_base(void)
35 {
36 #ifdef CONFIG_LOONGSON_UART_BASE
37 	prom_init_loongson_uart_base();
38 #endif
39 }
40 
41 /* irq operation functions */
42 extern void bonito_irqdispatch(void);
43 extern void __init bonito_irq_init(void);
44 extern void __init mach_init_irq(void);
45 extern void mach_irq_dispatch(unsigned int pending);
46 extern int mach_i8259_irq(void);
47 
48 /* We need this in some places... */
49 #define delay() ({		\
50 	int x;				\
51 	for (x = 0; x < 100000; x++)	\
52 		__asm__ __volatile__(""); \
53 })
54 
55 #define LOONGSON_REG(x) \
56 	(*(volatile u32 *)((char *)CKSEG1ADDR(LOONGSON_REG_BASE) + (x)))
57 
58 #define LOONGSON_IRQ_BASE	32
59 
60 #define LOONGSON_FLASH_BASE	0x1c000000
61 #define LOONGSON_FLASH_SIZE	0x02000000	/* 32M */
62 #define LOONGSON_FLASH_TOP	(LOONGSON_FLASH_BASE+LOONGSON_FLASH_SIZE-1)
63 
64 #define LOONGSON_LIO0_BASE	0x1e000000
65 #define LOONGSON_LIO0_SIZE	0x01C00000	/* 28M */
66 #define LOONGSON_LIO0_TOP	(LOONGSON_LIO0_BASE+LOONGSON_LIO0_SIZE-1)
67 
68 #define LOONGSON_BOOT_BASE	0x1fc00000
69 #define LOONGSON_BOOT_SIZE	0x00100000	/* 1M */
70 #define LOONGSON_BOOT_TOP	(LOONGSON_BOOT_BASE+LOONGSON_BOOT_SIZE-1)
71 #define LOONGSON_REG_BASE	0x1fe00000
72 #define LOONGSON_REG_SIZE	0x00100000	/* 256Bytes + 256Bytes + ??? */
73 #define LOONGSON_REG_TOP	(LOONGSON_REG_BASE+LOONGSON_REG_SIZE-1)
74 
75 #define LOONGSON_LIO1_BASE	0x1ff00000
76 #define LOONGSON_LIO1_SIZE	0x00100000	/* 1M */
77 #define LOONGSON_LIO1_TOP	(LOONGSON_LIO1_BASE+LOONGSON_LIO1_SIZE-1)
78 
79 #define LOONGSON_PCILO0_BASE	0x10000000
80 #define LOONGSON_PCILO1_BASE	0x14000000
81 #define LOONGSON_PCILO2_BASE	0x18000000
82 #define LOONGSON_PCILO_BASE	LOONGSON_PCILO0_BASE
83 #define LOONGSON_PCILO_SIZE	0x0c000000	/* 64M * 3 */
84 #define LOONGSON_PCILO_TOP	(LOONGSON_PCILO0_BASE+LOONGSON_PCILO_SIZE-1)
85 
86 #define LOONGSON_PCICFG_BASE	0x1fe80000
87 #define LOONGSON_PCICFG_SIZE	0x00000800	/* 2K */
88 #define LOONGSON_PCICFG_TOP	(LOONGSON_PCICFG_BASE+LOONGSON_PCICFG_SIZE-1)
89 #define LOONGSON_PCIIO_BASE	0x1fd00000
90 
91 #define LOONGSON_PCIIO_SIZE	0x00100000	/* 1M */
92 #define LOONGSON_PCIIO_TOP	(LOONGSON_PCIIO_BASE+LOONGSON_PCIIO_SIZE-1)
93 
94 /* Loongson Register Bases */
95 
96 #define LOONGSON_PCICONFIGBASE	0x00
97 #define LOONGSON_REGBASE	0x100
98 
99 /* PCI Configuration Registers */
100 
101 #define LOONGSON_PCI_REG(x)	LOONGSON_REG(LOONGSON_PCICONFIGBASE + (x))
102 #define LOONGSON_PCIDID		LOONGSON_PCI_REG(0x00)
103 #define LOONGSON_PCICMD		LOONGSON_PCI_REG(0x04)
104 #define LOONGSON_PCICLASS	LOONGSON_PCI_REG(0x08)
105 #define LOONGSON_PCILTIMER	LOONGSON_PCI_REG(0x0c)
106 #define LOONGSON_PCIBASE0	LOONGSON_PCI_REG(0x10)
107 #define LOONGSON_PCIBASE1	LOONGSON_PCI_REG(0x14)
108 #define LOONGSON_PCIBASE2	LOONGSON_PCI_REG(0x18)
109 #define LOONGSON_PCIBASE3	LOONGSON_PCI_REG(0x1c)
110 #define LOONGSON_PCIBASE4	LOONGSON_PCI_REG(0x20)
111 #define LOONGSON_PCIEXPRBASE	LOONGSON_PCI_REG(0x30)
112 #define LOONGSON_PCIINT		LOONGSON_PCI_REG(0x3c)
113 
114 #define LOONGSON_PCI_ISR4C	LOONGSON_PCI_REG(0x4c)
115 
116 #define LOONGSON_PCICMD_PERR_CLR	0x80000000
117 #define LOONGSON_PCICMD_SERR_CLR	0x40000000
118 #define LOONGSON_PCICMD_MABORT_CLR	0x20000000
119 #define LOONGSON_PCICMD_MTABORT_CLR	0x10000000
120 #define LOONGSON_PCICMD_TABORT_CLR	0x08000000
121 #define LOONGSON_PCICMD_MPERR_CLR	0x01000000
122 #define LOONGSON_PCICMD_PERRRESPEN	0x00000040
123 #define LOONGSON_PCICMD_ASTEPEN		0x00000080
124 #define LOONGSON_PCICMD_SERREN		0x00000100
125 #define LOONGSON_PCILTIMER_BUSLATENCY	0x0000ff00
126 #define LOONGSON_PCILTIMER_BUSLATENCY_SHIFT	8
127 
128 /* Loongson h/w Configuration */
129 
130 #define LOONGSON_GENCFG_OFFSET		0x4
131 #define LOONGSON_GENCFG LOONGSON_REG(LOONGSON_REGBASE + LOONGSON_GENCFG_OFFSET)
132 
133 #define LOONGSON_GENCFG_DEBUGMODE	0x00000001
134 #define LOONGSON_GENCFG_SNOOPEN		0x00000002
135 #define LOONGSON_GENCFG_CPUSELFRESET	0x00000004
136 
137 #define LOONGSON_GENCFG_FORCE_IRQA	0x00000008
138 #define LOONGSON_GENCFG_IRQA_ISOUT	0x00000010
139 #define LOONGSON_GENCFG_IRQA_FROM_INT1	0x00000020
140 #define LOONGSON_GENCFG_BYTESWAP	0x00000040
141 
142 #define LOONGSON_GENCFG_UNCACHED	0x00000080
143 #define LOONGSON_GENCFG_PREFETCHEN	0x00000100
144 #define LOONGSON_GENCFG_WBEHINDEN	0x00000200
145 #define LOONGSON_GENCFG_CACHEALG	0x00000c00
146 #define LOONGSON_GENCFG_CACHEALG_SHIFT	10
147 #define LOONGSON_GENCFG_PCIQUEUE	0x00001000
148 #define LOONGSON_GENCFG_CACHESTOP	0x00002000
149 #define LOONGSON_GENCFG_MSTRBYTESWAP	0x00004000
150 #define LOONGSON_GENCFG_BUSERREN	0x00008000
151 #define LOONGSON_GENCFG_NORETRYTIMEOUT	0x00010000
152 #define LOONGSON_GENCFG_SHORTCOPYTIMEOUT	0x00020000
153 
154 /* PCI address map control */
155 
156 #define LOONGSON_PCIMAP			LOONGSON_REG(LOONGSON_REGBASE + 0x10)
157 #define LOONGSON_PCIMEMBASECFG		LOONGSON_REG(LOONGSON_REGBASE + 0x14)
158 #define LOONGSON_PCIMAP_CFG		LOONGSON_REG(LOONGSON_REGBASE + 0x18)
159 
160 /* GPIO Regs - r/w */
161 
162 #define LOONGSON_GPIODATA		LOONGSON_REG(LOONGSON_REGBASE + 0x1c)
163 #define LOONGSON_GPIOIE			LOONGSON_REG(LOONGSON_REGBASE + 0x20)
164 
165 /* ICU Configuration Regs - r/w */
166 
167 #define LOONGSON_INTEDGE		LOONGSON_REG(LOONGSON_REGBASE + 0x24)
168 #define LOONGSON_INTSTEER		LOONGSON_REG(LOONGSON_REGBASE + 0x28)
169 #define LOONGSON_INTPOL			LOONGSON_REG(LOONGSON_REGBASE + 0x2c)
170 
171 /* ICU Enable Regs - IntEn & IntISR are r/o. */
172 
173 #define LOONGSON_INTENSET		LOONGSON_REG(LOONGSON_REGBASE + 0x30)
174 #define LOONGSON_INTENCLR		LOONGSON_REG(LOONGSON_REGBASE + 0x34)
175 #define LOONGSON_INTEN			LOONGSON_REG(LOONGSON_REGBASE + 0x38)
176 #define LOONGSON_INTISR			LOONGSON_REG(LOONGSON_REGBASE + 0x3c)
177 
178 /* ICU */
179 #define LOONGSON_ICU_MBOXES		0x0000000f
180 #define LOONGSON_ICU_MBOXES_SHIFT	0
181 #define LOONGSON_ICU_DMARDY		0x00000010
182 #define LOONGSON_ICU_DMAEMPTY		0x00000020
183 #define LOONGSON_ICU_COPYRDY		0x00000040
184 #define LOONGSON_ICU_COPYEMPTY		0x00000080
185 #define LOONGSON_ICU_COPYERR		0x00000100
186 #define LOONGSON_ICU_PCIIRQ		0x00000200
187 #define LOONGSON_ICU_MASTERERR		0x00000400
188 #define LOONGSON_ICU_SYSTEMERR		0x00000800
189 #define LOONGSON_ICU_DRAMPERR		0x00001000
190 #define LOONGSON_ICU_RETRYERR		0x00002000
191 #define LOONGSON_ICU_GPIOS		0x01ff0000
192 #define LOONGSON_ICU_GPIOS_SHIFT		16
193 #define LOONGSON_ICU_GPINS		0x7e000000
194 #define LOONGSON_ICU_GPINS_SHIFT		25
195 #define LOONGSON_ICU_MBOX(N)		(1<<(LOONGSON_ICU_MBOXES_SHIFT+(N)))
196 #define LOONGSON_ICU_GPIO(N)		(1<<(LOONGSON_ICU_GPIOS_SHIFT+(N)))
197 #define LOONGSON_ICU_GPIN(N)		(1<<(LOONGSON_ICU_GPINS_SHIFT+(N)))
198 
199 /* PCI prefetch window base & mask */
200 
201 #define LOONGSON_MEM_WIN_BASE_L		LOONGSON_REG(LOONGSON_REGBASE + 0x40)
202 #define LOONGSON_MEM_WIN_BASE_H		LOONGSON_REG(LOONGSON_REGBASE + 0x44)
203 #define LOONGSON_MEM_WIN_MASK_L		LOONGSON_REG(LOONGSON_REGBASE + 0x48)
204 #define LOONGSON_MEM_WIN_MASK_H		LOONGSON_REG(LOONGSON_REGBASE + 0x4c)
205 
206 /* PCI_Hit*_Sel_* */
207 
208 #define LOONGSON_PCI_HIT0_SEL_L		LOONGSON_REG(LOONGSON_REGBASE + 0x50)
209 #define LOONGSON_PCI_HIT0_SEL_H		LOONGSON_REG(LOONGSON_REGBASE + 0x54)
210 #define LOONGSON_PCI_HIT1_SEL_L		LOONGSON_REG(LOONGSON_REGBASE + 0x58)
211 #define LOONGSON_PCI_HIT1_SEL_H		LOONGSON_REG(LOONGSON_REGBASE + 0x5c)
212 #define LOONGSON_PCI_HIT2_SEL_L		LOONGSON_REG(LOONGSON_REGBASE + 0x60)
213 #define LOONGSON_PCI_HIT2_SEL_H		LOONGSON_REG(LOONGSON_REGBASE + 0x64)
214 
215 /* PXArb Config & Status */
216 
217 #define LOONGSON_PXARB_CFG		LOONGSON_REG(LOONGSON_REGBASE + 0x68)
218 #define LOONGSON_PXARB_STATUS		LOONGSON_REG(LOONGSON_REGBASE + 0x6c)
219 
220 /* Chip Config registor of each physical cpu package, PRid >= Loongson-2F */
221 #define LOONGSON_CHIPCFG	(void __iomem *)TO_UNCAC(0x1fc00180)
222 
223 /* pcimap */
224 
225 #define LOONGSON_PCIMAP_PCIMAP_LO0	0x0000003f
226 #define LOONGSON_PCIMAP_PCIMAP_LO0_SHIFT	0
227 #define LOONGSON_PCIMAP_PCIMAP_LO1	0x00000fc0
228 #define LOONGSON_PCIMAP_PCIMAP_LO1_SHIFT	6
229 #define LOONGSON_PCIMAP_PCIMAP_LO2	0x0003f000
230 #define LOONGSON_PCIMAP_PCIMAP_LO2_SHIFT	12
231 #define LOONGSON_PCIMAP_PCIMAP_2	0x00040000
232 #define LOONGSON_PCIMAP_WIN(WIN, ADDR)	\
233 	((((ADDR)>>26) & LOONGSON_PCIMAP_PCIMAP_LO0) << ((WIN)*6))
234 
235 #ifdef CONFIG_CPU_SUPPORTS_CPUFREQ
236 #include <linux/cpufreq.h>
237 extern struct cpufreq_frequency_table loongson2_clockmod_table[];
238 extern int loongson2_cpu_set_rate(unsigned long rate_khz);
239 #endif
240 
241 /*
242  * address windows configuration module
243  *
244  * loongson2e do not have this module
245  */
246 #ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
247 
248 /* address window config module base address */
249 #define LOONGSON_ADDRWINCFG_BASE		0x3ff00000ul
250 #define LOONGSON_ADDRWINCFG_SIZE		0x180
251 
252 extern unsigned long _loongson_addrwincfg_base;
253 #define LOONGSON_ADDRWINCFG(offset) \
254 	(*(volatile u64 *)(_loongson_addrwincfg_base + (offset)))
255 
256 #define CPU_WIN0_BASE	LOONGSON_ADDRWINCFG(0x00)
257 #define CPU_WIN1_BASE	LOONGSON_ADDRWINCFG(0x08)
258 #define CPU_WIN2_BASE	LOONGSON_ADDRWINCFG(0x10)
259 #define CPU_WIN3_BASE	LOONGSON_ADDRWINCFG(0x18)
260 
261 #define CPU_WIN0_MASK	LOONGSON_ADDRWINCFG(0x20)
262 #define CPU_WIN1_MASK	LOONGSON_ADDRWINCFG(0x28)
263 #define CPU_WIN2_MASK	LOONGSON_ADDRWINCFG(0x30)
264 #define CPU_WIN3_MASK	LOONGSON_ADDRWINCFG(0x38)
265 
266 #define CPU_WIN0_MMAP	LOONGSON_ADDRWINCFG(0x40)
267 #define CPU_WIN1_MMAP	LOONGSON_ADDRWINCFG(0x48)
268 #define CPU_WIN2_MMAP	LOONGSON_ADDRWINCFG(0x50)
269 #define CPU_WIN3_MMAP	LOONGSON_ADDRWINCFG(0x58)
270 
271 #define PCIDMA_WIN0_BASE	LOONGSON_ADDRWINCFG(0x60)
272 #define PCIDMA_WIN1_BASE	LOONGSON_ADDRWINCFG(0x68)
273 #define PCIDMA_WIN2_BASE	LOONGSON_ADDRWINCFG(0x70)
274 #define PCIDMA_WIN3_BASE	LOONGSON_ADDRWINCFG(0x78)
275 
276 #define PCIDMA_WIN0_MASK	LOONGSON_ADDRWINCFG(0x80)
277 #define PCIDMA_WIN1_MASK	LOONGSON_ADDRWINCFG(0x88)
278 #define PCIDMA_WIN2_MASK	LOONGSON_ADDRWINCFG(0x90)
279 #define PCIDMA_WIN3_MASK	LOONGSON_ADDRWINCFG(0x98)
280 
281 #define PCIDMA_WIN0_MMAP	LOONGSON_ADDRWINCFG(0xa0)
282 #define PCIDMA_WIN1_MMAP	LOONGSON_ADDRWINCFG(0xa8)
283 #define PCIDMA_WIN2_MMAP	LOONGSON_ADDRWINCFG(0xb0)
284 #define PCIDMA_WIN3_MMAP	LOONGSON_ADDRWINCFG(0xb8)
285 
286 #define ADDRWIN_WIN0	0
287 #define ADDRWIN_WIN1	1
288 #define ADDRWIN_WIN2	2
289 #define ADDRWIN_WIN3	3
290 
291 #define ADDRWIN_MAP_DST_DDR	0
292 #define ADDRWIN_MAP_DST_PCI	1
293 #define ADDRWIN_MAP_DST_LIO	1
294 
295 /*
296  * s: CPU, PCIDMA
297  * d: DDR, PCI, LIO
298  * win: 0, 1, 2, 3
299  * src: map source
300  * dst: map destination
301  * size: ~mask + 1
302  */
303 #define LOONGSON_ADDRWIN_CFG(s, d, w, src, dst, size) do {\
304 	s##_WIN##w##_BASE = (src); \
305 	s##_WIN##w##_MMAP = (dst) | ADDRWIN_MAP_DST_##d; \
306 	s##_WIN##w##_MASK = ~(size-1); \
307 } while (0)
308 
309 #define LOONGSON_ADDRWIN_CPUTOPCI(win, src, dst, size) \
310 	LOONGSON_ADDRWIN_CFG(CPU, PCI, win, src, dst, size)
311 #define LOONGSON_ADDRWIN_CPUTODDR(win, src, dst, size) \
312 	LOONGSON_ADDRWIN_CFG(CPU, DDR, win, src, dst, size)
313 #define LOONGSON_ADDRWIN_PCITODDR(win, src, dst, size) \
314 	LOONGSON_ADDRWIN_CFG(PCIDMA, DDR, win, src, dst, size)
315 
316 #endif	/* ! CONFIG_CPU_SUPPORTS_ADDRWINCFG */
317 
318 #endif /* __ASM_MACH_LOONGSON2EF_LOONGSON_H */
319