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 */ 328