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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 */
15extern void bonito_irq_init(void);
16
17/* machine-specific reboot/halt operation */
18extern void mach_prepare_reboot(void);
19extern void mach_prepare_shutdown(void);
20
21/* environment arguments from bootloader */
22extern u32 cpu_clock_freq;
23extern u32 memsize, highmemsize;
24
25/* loongson-specific command line, env and memory initialization */
26extern void __init prom_init_memory(void);
27extern void __init prom_init_machtype(void);
28extern void __init prom_init_env(void);
29#ifdef CONFIG_LOONGSON_UART_BASE
30extern unsigned long _loongson_uart_base, loongson_uart_base;
31extern void prom_init_loongson_uart_base(void);
32#endif
33
34static 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 */
42extern void bonito_irqdispatch(void);
43extern void __init bonito_irq_init(void);
44extern void __init mach_init_irq(void);
45extern void mach_irq_dispatch(unsigned int pending);
46extern 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#define LOONGSON2_PERFCNT_IRQ (MIPS_CPU_IRQ_BASE + 6) /* cpu perf counter */
60
61#include <linux/interrupt.h>
62static inline void do_perfcnt_IRQ(void)
63{
64#if IS_ENABLED(CONFIG_OPROFILE)
65 do_IRQ(LOONGSON2_PERFCNT_IRQ);
66#endif
67}
68
69#define LOONGSON_FLASH_BASE 0x1c000000
70#define LOONGSON_FLASH_SIZE 0x02000000 /* 32M */
71#define LOONGSON_FLASH_TOP (LOONGSON_FLASH_BASE+LOONGSON_FLASH_SIZE-1)
72
73#define LOONGSON_LIO0_BASE 0x1e000000
74#define LOONGSON_LIO0_SIZE 0x01C00000 /* 28M */
75#define LOONGSON_LIO0_TOP (LOONGSON_LIO0_BASE+LOONGSON_LIO0_SIZE-1)
76
77#define LOONGSON_BOOT_BASE 0x1fc00000
78#define LOONGSON_BOOT_SIZE 0x00100000 /* 1M */
79#define LOONGSON_BOOT_TOP (LOONGSON_BOOT_BASE+LOONGSON_BOOT_SIZE-1)
80#define LOONGSON_REG_BASE 0x1fe00000
81#define LOONGSON_REG_SIZE 0x00100000 /* 256Bytes + 256Bytes + ??? */
82#define LOONGSON_REG_TOP (LOONGSON_REG_BASE+LOONGSON_REG_SIZE-1)
83
84#define LOONGSON_LIO1_BASE 0x1ff00000
85#define LOONGSON_LIO1_SIZE 0x00100000 /* 1M */
86#define LOONGSON_LIO1_TOP (LOONGSON_LIO1_BASE+LOONGSON_LIO1_SIZE-1)
87
88#define LOONGSON_PCILO0_BASE 0x10000000
89#define LOONGSON_PCILO1_BASE 0x14000000
90#define LOONGSON_PCILO2_BASE 0x18000000
91#define LOONGSON_PCILO_BASE LOONGSON_PCILO0_BASE
92#define LOONGSON_PCILO_SIZE 0x0c000000 /* 64M * 3 */
93#define LOONGSON_PCILO_TOP (LOONGSON_PCILO0_BASE+LOONGSON_PCILO_SIZE-1)
94
95#define LOONGSON_PCICFG_BASE 0x1fe80000
96#define LOONGSON_PCICFG_SIZE 0x00000800 /* 2K */
97#define LOONGSON_PCICFG_TOP (LOONGSON_PCICFG_BASE+LOONGSON_PCICFG_SIZE-1)
98#define LOONGSON_PCIIO_BASE 0x1fd00000
99
100#define LOONGSON_PCIIO_SIZE 0x00100000 /* 1M */
101#define LOONGSON_PCIIO_TOP (LOONGSON_PCIIO_BASE+LOONGSON_PCIIO_SIZE-1)
102
103/* Loongson Register Bases */
104
105#define LOONGSON_PCICONFIGBASE 0x00
106#define LOONGSON_REGBASE 0x100
107
108/* PCI Configuration Registers */
109
110#define LOONGSON_PCI_REG(x) LOONGSON_REG(LOONGSON_PCICONFIGBASE + (x))
111#define LOONGSON_PCIDID LOONGSON_PCI_REG(0x00)
112#define LOONGSON_PCICMD LOONGSON_PCI_REG(0x04)
113#define LOONGSON_PCICLASS LOONGSON_PCI_REG(0x08)
114#define LOONGSON_PCILTIMER LOONGSON_PCI_REG(0x0c)
115#define LOONGSON_PCIBASE0 LOONGSON_PCI_REG(0x10)
116#define LOONGSON_PCIBASE1 LOONGSON_PCI_REG(0x14)
117#define LOONGSON_PCIBASE2 LOONGSON_PCI_REG(0x18)
118#define LOONGSON_PCIBASE3 LOONGSON_PCI_REG(0x1c)
119#define LOONGSON_PCIBASE4 LOONGSON_PCI_REG(0x20)
120#define LOONGSON_PCIEXPRBASE LOONGSON_PCI_REG(0x30)
121#define LOONGSON_PCIINT LOONGSON_PCI_REG(0x3c)
122
123#define LOONGSON_PCI_ISR4C LOONGSON_PCI_REG(0x4c)
124
125#define LOONGSON_PCICMD_PERR_CLR 0x80000000
126#define LOONGSON_PCICMD_SERR_CLR 0x40000000
127#define LOONGSON_PCICMD_MABORT_CLR 0x20000000
128#define LOONGSON_PCICMD_MTABORT_CLR 0x10000000
129#define LOONGSON_PCICMD_TABORT_CLR 0x08000000
130#define LOONGSON_PCICMD_MPERR_CLR 0x01000000
131#define LOONGSON_PCICMD_PERRRESPEN 0x00000040
132#define LOONGSON_PCICMD_ASTEPEN 0x00000080
133#define LOONGSON_PCICMD_SERREN 0x00000100
134#define LOONGSON_PCILTIMER_BUSLATENCY 0x0000ff00
135#define LOONGSON_PCILTIMER_BUSLATENCY_SHIFT 8
136
137/* Loongson h/w Configuration */
138
139#define LOONGSON_GENCFG_OFFSET 0x4
140#define LOONGSON_GENCFG LOONGSON_REG(LOONGSON_REGBASE + LOONGSON_GENCFG_OFFSET)
141
142#define LOONGSON_GENCFG_DEBUGMODE 0x00000001
143#define LOONGSON_GENCFG_SNOOPEN 0x00000002
144#define LOONGSON_GENCFG_CPUSELFRESET 0x00000004
145
146#define LOONGSON_GENCFG_FORCE_IRQA 0x00000008
147#define LOONGSON_GENCFG_IRQA_ISOUT 0x00000010
148#define LOONGSON_GENCFG_IRQA_FROM_INT1 0x00000020
149#define LOONGSON_GENCFG_BYTESWAP 0x00000040
150
151#define LOONGSON_GENCFG_UNCACHED 0x00000080
152#define LOONGSON_GENCFG_PREFETCHEN 0x00000100
153#define LOONGSON_GENCFG_WBEHINDEN 0x00000200
154#define LOONGSON_GENCFG_CACHEALG 0x00000c00
155#define LOONGSON_GENCFG_CACHEALG_SHIFT 10
156#define LOONGSON_GENCFG_PCIQUEUE 0x00001000
157#define LOONGSON_GENCFG_CACHESTOP 0x00002000
158#define LOONGSON_GENCFG_MSTRBYTESWAP 0x00004000
159#define LOONGSON_GENCFG_BUSERREN 0x00008000
160#define LOONGSON_GENCFG_NORETRYTIMEOUT 0x00010000
161#define LOONGSON_GENCFG_SHORTCOPYTIMEOUT 0x00020000
162
163/* PCI address map control */
164
165#define LOONGSON_PCIMAP LOONGSON_REG(LOONGSON_REGBASE + 0x10)
166#define LOONGSON_PCIMEMBASECFG LOONGSON_REG(LOONGSON_REGBASE + 0x14)
167#define LOONGSON_PCIMAP_CFG LOONGSON_REG(LOONGSON_REGBASE + 0x18)
168
169/* GPIO Regs - r/w */
170
171#define LOONGSON_GPIODATA LOONGSON_REG(LOONGSON_REGBASE + 0x1c)
172#define LOONGSON_GPIOIE LOONGSON_REG(LOONGSON_REGBASE + 0x20)
173
174/* ICU Configuration Regs - r/w */
175
176#define LOONGSON_INTEDGE LOONGSON_REG(LOONGSON_REGBASE + 0x24)
177#define LOONGSON_INTSTEER LOONGSON_REG(LOONGSON_REGBASE + 0x28)
178#define LOONGSON_INTPOL LOONGSON_REG(LOONGSON_REGBASE + 0x2c)
179
180/* ICU Enable Regs - IntEn & IntISR are r/o. */
181
182#define LOONGSON_INTENSET LOONGSON_REG(LOONGSON_REGBASE + 0x30)
183#define LOONGSON_INTENCLR LOONGSON_REG(LOONGSON_REGBASE + 0x34)
184#define LOONGSON_INTEN LOONGSON_REG(LOONGSON_REGBASE + 0x38)
185#define LOONGSON_INTISR LOONGSON_REG(LOONGSON_REGBASE + 0x3c)
186
187/* ICU */
188#define LOONGSON_ICU_MBOXES 0x0000000f
189#define LOONGSON_ICU_MBOXES_SHIFT 0
190#define LOONGSON_ICU_DMARDY 0x00000010
191#define LOONGSON_ICU_DMAEMPTY 0x00000020
192#define LOONGSON_ICU_COPYRDY 0x00000040
193#define LOONGSON_ICU_COPYEMPTY 0x00000080
194#define LOONGSON_ICU_COPYERR 0x00000100
195#define LOONGSON_ICU_PCIIRQ 0x00000200
196#define LOONGSON_ICU_MASTERERR 0x00000400
197#define LOONGSON_ICU_SYSTEMERR 0x00000800
198#define LOONGSON_ICU_DRAMPERR 0x00001000
199#define LOONGSON_ICU_RETRYERR 0x00002000
200#define LOONGSON_ICU_GPIOS 0x01ff0000
201#define LOONGSON_ICU_GPIOS_SHIFT 16
202#define LOONGSON_ICU_GPINS 0x7e000000
203#define LOONGSON_ICU_GPINS_SHIFT 25
204#define LOONGSON_ICU_MBOX(N) (1<<(LOONGSON_ICU_MBOXES_SHIFT+(N)))
205#define LOONGSON_ICU_GPIO(N) (1<<(LOONGSON_ICU_GPIOS_SHIFT+(N)))
206#define LOONGSON_ICU_GPIN(N) (1<<(LOONGSON_ICU_GPINS_SHIFT+(N)))
207
208/* PCI prefetch window base & mask */
209
210#define LOONGSON_MEM_WIN_BASE_L LOONGSON_REG(LOONGSON_REGBASE + 0x40)
211#define LOONGSON_MEM_WIN_BASE_H LOONGSON_REG(LOONGSON_REGBASE + 0x44)
212#define LOONGSON_MEM_WIN_MASK_L LOONGSON_REG(LOONGSON_REGBASE + 0x48)
213#define LOONGSON_MEM_WIN_MASK_H LOONGSON_REG(LOONGSON_REGBASE + 0x4c)
214
215/* PCI_Hit*_Sel_* */
216
217#define LOONGSON_PCI_HIT0_SEL_L LOONGSON_REG(LOONGSON_REGBASE + 0x50)
218#define LOONGSON_PCI_HIT0_SEL_H LOONGSON_REG(LOONGSON_REGBASE + 0x54)
219#define LOONGSON_PCI_HIT1_SEL_L LOONGSON_REG(LOONGSON_REGBASE + 0x58)
220#define LOONGSON_PCI_HIT1_SEL_H LOONGSON_REG(LOONGSON_REGBASE + 0x5c)
221#define LOONGSON_PCI_HIT2_SEL_L LOONGSON_REG(LOONGSON_REGBASE + 0x60)
222#define LOONGSON_PCI_HIT2_SEL_H LOONGSON_REG(LOONGSON_REGBASE + 0x64)
223
224/* PXArb Config & Status */
225
226#define LOONGSON_PXARB_CFG LOONGSON_REG(LOONGSON_REGBASE + 0x68)
227#define LOONGSON_PXARB_STATUS LOONGSON_REG(LOONGSON_REGBASE + 0x6c)
228
229/* Chip Config registor of each physical cpu package, PRid >= Loongson-2F */
230#define LOONGSON_CHIPCFG (void __iomem *)TO_UNCAC(0x1fc00180)
231
232/* pcimap */
233
234#define LOONGSON_PCIMAP_PCIMAP_LO0 0x0000003f
235#define LOONGSON_PCIMAP_PCIMAP_LO0_SHIFT 0
236#define LOONGSON_PCIMAP_PCIMAP_LO1 0x00000fc0
237#define LOONGSON_PCIMAP_PCIMAP_LO1_SHIFT 6
238#define LOONGSON_PCIMAP_PCIMAP_LO2 0x0003f000
239#define LOONGSON_PCIMAP_PCIMAP_LO2_SHIFT 12
240#define LOONGSON_PCIMAP_PCIMAP_2 0x00040000
241#define LOONGSON_PCIMAP_WIN(WIN, ADDR) \
242 ((((ADDR)>>26) & LOONGSON_PCIMAP_PCIMAP_LO0) << ((WIN)*6))
243
244#ifdef CONFIG_CPU_SUPPORTS_CPUFREQ
245#include <linux/cpufreq.h>
246extern struct cpufreq_frequency_table loongson2_clockmod_table[];
247extern int loongson2_cpu_set_rate(unsigned long rate_khz);
248#endif
249
250/*
251 * address windows configuration module
252 *
253 * loongson2e do not have this module
254 */
255#ifdef CONFIG_CPU_SUPPORTS_ADDRWINCFG
256
257/* address window config module base address */
258#define LOONGSON_ADDRWINCFG_BASE 0x3ff00000ul
259#define LOONGSON_ADDRWINCFG_SIZE 0x180
260
261extern unsigned long _loongson_addrwincfg_base;
262#define LOONGSON_ADDRWINCFG(offset) \
263 (*(volatile u64 *)(_loongson_addrwincfg_base + (offset)))
264
265#define CPU_WIN0_BASE LOONGSON_ADDRWINCFG(0x00)
266#define CPU_WIN1_BASE LOONGSON_ADDRWINCFG(0x08)
267#define CPU_WIN2_BASE LOONGSON_ADDRWINCFG(0x10)
268#define CPU_WIN3_BASE LOONGSON_ADDRWINCFG(0x18)
269
270#define CPU_WIN0_MASK LOONGSON_ADDRWINCFG(0x20)
271#define CPU_WIN1_MASK LOONGSON_ADDRWINCFG(0x28)
272#define CPU_WIN2_MASK LOONGSON_ADDRWINCFG(0x30)
273#define CPU_WIN3_MASK LOONGSON_ADDRWINCFG(0x38)
274
275#define CPU_WIN0_MMAP LOONGSON_ADDRWINCFG(0x40)
276#define CPU_WIN1_MMAP LOONGSON_ADDRWINCFG(0x48)
277#define CPU_WIN2_MMAP LOONGSON_ADDRWINCFG(0x50)
278#define CPU_WIN3_MMAP LOONGSON_ADDRWINCFG(0x58)
279
280#define PCIDMA_WIN0_BASE LOONGSON_ADDRWINCFG(0x60)
281#define PCIDMA_WIN1_BASE LOONGSON_ADDRWINCFG(0x68)
282#define PCIDMA_WIN2_BASE LOONGSON_ADDRWINCFG(0x70)
283#define PCIDMA_WIN3_BASE LOONGSON_ADDRWINCFG(0x78)
284
285#define PCIDMA_WIN0_MASK LOONGSON_ADDRWINCFG(0x80)
286#define PCIDMA_WIN1_MASK LOONGSON_ADDRWINCFG(0x88)
287#define PCIDMA_WIN2_MASK LOONGSON_ADDRWINCFG(0x90)
288#define PCIDMA_WIN3_MASK LOONGSON_ADDRWINCFG(0x98)
289
290#define PCIDMA_WIN0_MMAP LOONGSON_ADDRWINCFG(0xa0)
291#define PCIDMA_WIN1_MMAP LOONGSON_ADDRWINCFG(0xa8)
292#define PCIDMA_WIN2_MMAP LOONGSON_ADDRWINCFG(0xb0)
293#define PCIDMA_WIN3_MMAP LOONGSON_ADDRWINCFG(0xb8)
294
295#define ADDRWIN_WIN0 0
296#define ADDRWIN_WIN1 1
297#define ADDRWIN_WIN2 2
298#define ADDRWIN_WIN3 3
299
300#define ADDRWIN_MAP_DST_DDR 0
301#define ADDRWIN_MAP_DST_PCI 1
302#define ADDRWIN_MAP_DST_LIO 1
303
304/*
305 * s: CPU, PCIDMA
306 * d: DDR, PCI, LIO
307 * win: 0, 1, 2, 3
308 * src: map source
309 * dst: map destination
310 * size: ~mask + 1
311 */
312#define LOONGSON_ADDRWIN_CFG(s, d, w, src, dst, size) do {\
313 s##_WIN##w##_BASE = (src); \
314 s##_WIN##w##_MMAP = (dst) | ADDRWIN_MAP_DST_##d; \
315 s##_WIN##w##_MASK = ~(size-1); \
316} while (0)
317
318#define LOONGSON_ADDRWIN_CPUTOPCI(win, src, dst, size) \
319 LOONGSON_ADDRWIN_CFG(CPU, PCI, win, src, dst, size)
320#define LOONGSON_ADDRWIN_CPUTODDR(win, src, dst, size) \
321 LOONGSON_ADDRWIN_CFG(CPU, DDR, win, src, dst, size)
322#define LOONGSON_ADDRWIN_PCITODDR(win, src, dst, size) \
323 LOONGSON_ADDRWIN_CFG(PCIDMA, DDR, win, src, dst, size)
324
325#endif /* ! CONFIG_CPU_SUPPORTS_ADDRWINCFG */
326
327#endif /* __ASM_MACH_LOONGSON2EF_LOONGSON_H */