18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _SPARC_VADDRS_H 38c2ecf20Sopenharmony_ci#define _SPARC_VADDRS_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <asm/head.h> 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ci/* 88c2ecf20Sopenharmony_ci * asm/vaddrs.h: Here we define the virtual addresses at 98c2ecf20Sopenharmony_ci * which important things will be mapped. 108c2ecf20Sopenharmony_ci * 118c2ecf20Sopenharmony_ci * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 128c2ecf20Sopenharmony_ci * Copyright (C) 2000 Anton Blanchard (anton@samba.org) 138c2ecf20Sopenharmony_ci */ 148c2ecf20Sopenharmony_ci 158c2ecf20Sopenharmony_ci#define SRMMU_MAXMEM 0x0c000000 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ci#define SRMMU_NOCACHE_VADDR (KERNBASE + SRMMU_MAXMEM) 188c2ecf20Sopenharmony_ci /* = 0x0fc000000 */ 198c2ecf20Sopenharmony_ci/* XXX Empiricals - this needs to go away - KMW */ 208c2ecf20Sopenharmony_ci#define SRMMU_MIN_NOCACHE_PAGES (550) 218c2ecf20Sopenharmony_ci#define SRMMU_MAX_NOCACHE_PAGES (1280) 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci/* The following constant is used in mm/srmmu.c::srmmu_nocache_calcsize() 248c2ecf20Sopenharmony_ci * to determine the amount of memory that will be reserved as nocache: 258c2ecf20Sopenharmony_ci * 268c2ecf20Sopenharmony_ci * 256 pages will be taken as nocache per each 278c2ecf20Sopenharmony_ci * SRMMU_NOCACHE_ALCRATIO MB of system memory. 288c2ecf20Sopenharmony_ci * 298c2ecf20Sopenharmony_ci * limits enforced: nocache minimum = 256 pages 308c2ecf20Sopenharmony_ci * nocache maximum = 1280 pages 318c2ecf20Sopenharmony_ci */ 328c2ecf20Sopenharmony_ci#define SRMMU_NOCACHE_ALCRATIO 64 /* 256 pages per 64MB of system RAM */ 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci#ifndef __ASSEMBLY__ 358c2ecf20Sopenharmony_ci#include <asm/kmap_types.h> 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_cienum fixed_addresses { 388c2ecf20Sopenharmony_ci FIX_HOLE, 398c2ecf20Sopenharmony_ci#ifdef CONFIG_HIGHMEM 408c2ecf20Sopenharmony_ci FIX_KMAP_BEGIN, 418c2ecf20Sopenharmony_ci FIX_KMAP_END = (KM_TYPE_NR * NR_CPUS), 428c2ecf20Sopenharmony_ci#endif 438c2ecf20Sopenharmony_ci __end_of_fixed_addresses 448c2ecf20Sopenharmony_ci}; 458c2ecf20Sopenharmony_ci#endif 468c2ecf20Sopenharmony_ci 478c2ecf20Sopenharmony_ci/* Leave one empty page between IO pages at 0xfd000000 and 488c2ecf20Sopenharmony_ci * the top of the fixmap. 498c2ecf20Sopenharmony_ci */ 508c2ecf20Sopenharmony_ci#define FIXADDR_TOP (0xfcfff000UL) 518c2ecf20Sopenharmony_ci#define FIXADDR_SIZE ((FIX_KMAP_END + 1) << PAGE_SHIFT) 528c2ecf20Sopenharmony_ci#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) 538c2ecf20Sopenharmony_ci 548c2ecf20Sopenharmony_ci#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) 558c2ecf20Sopenharmony_ci 568c2ecf20Sopenharmony_ci#define SUN4M_IOBASE_VADDR 0xfd000000 /* Base for mapping pages */ 578c2ecf20Sopenharmony_ci#define IOBASE_VADDR 0xfe000000 588c2ecf20Sopenharmony_ci#define IOBASE_END 0xfe600000 598c2ecf20Sopenharmony_ci 608c2ecf20Sopenharmony_ci#define KADB_DEBUGGER_BEGVM 0xffc00000 /* Where kern debugger is in virt-mem */ 618c2ecf20Sopenharmony_ci#define KADB_DEBUGGER_ENDVM 0xffd00000 628c2ecf20Sopenharmony_ci#define DEBUG_FIRSTVADDR KADB_DEBUGGER_BEGVM 638c2ecf20Sopenharmony_ci#define DEBUG_LASTVADDR KADB_DEBUGGER_ENDVM 648c2ecf20Sopenharmony_ci 658c2ecf20Sopenharmony_ci#define LINUX_OPPROM_BEGVM 0xffd00000 668c2ecf20Sopenharmony_ci#define LINUX_OPPROM_ENDVM 0xfff00000 678c2ecf20Sopenharmony_ci 688c2ecf20Sopenharmony_ci#define DVMA_VADDR 0xfff00000 /* Base area of the DVMA on suns */ 698c2ecf20Sopenharmony_ci#define DVMA_END 0xfffc0000 708c2ecf20Sopenharmony_ci 718c2ecf20Sopenharmony_ci#endif /* !(_SPARC_VADDRS_H) */ 72