1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2a439fe51SSam Ravnborg #ifndef _SPARC_VADDRS_H 3a439fe51SSam Ravnborg #define _SPARC_VADDRS_H 4a439fe51SSam Ravnborg 5a439fe51SSam Ravnborg #include <asm/head.h> 6a439fe51SSam Ravnborg 7a439fe51SSam Ravnborg /* 8a439fe51SSam Ravnborg * asm/vaddrs.h: Here we define the virtual addresses at 9a439fe51SSam Ravnborg * which important things will be mapped. 10a439fe51SSam Ravnborg * 11a439fe51SSam Ravnborg * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) 12a439fe51SSam Ravnborg * Copyright (C) 2000 Anton Blanchard (anton@samba.org) 13a439fe51SSam Ravnborg */ 14a439fe51SSam Ravnborg 15a439fe51SSam Ravnborg #define SRMMU_MAXMEM 0x0c000000 16a439fe51SSam Ravnborg 17a439fe51SSam Ravnborg #define SRMMU_NOCACHE_VADDR (KERNBASE + SRMMU_MAXMEM) 18a439fe51SSam Ravnborg /* = 0x0fc000000 */ 19a439fe51SSam Ravnborg /* XXX Empiricals - this needs to go away - KMW */ 20a439fe51SSam Ravnborg #define SRMMU_MIN_NOCACHE_PAGES (550) 21a439fe51SSam Ravnborg #define SRMMU_MAX_NOCACHE_PAGES (1280) 22a439fe51SSam Ravnborg 23a439fe51SSam Ravnborg /* The following constant is used in mm/srmmu.c::srmmu_nocache_calcsize() 24a439fe51SSam Ravnborg * to determine the amount of memory that will be reserved as nocache: 25a439fe51SSam Ravnborg * 26a439fe51SSam Ravnborg * 256 pages will be taken as nocache per each 27a439fe51SSam Ravnborg * SRMMU_NOCACHE_ALCRATIO MB of system memory. 28a439fe51SSam Ravnborg * 29a439fe51SSam Ravnborg * limits enforced: nocache minimum = 256 pages 30a439fe51SSam Ravnborg * nocache maximum = 1280 pages 31a439fe51SSam Ravnborg */ 32a439fe51SSam Ravnborg #define SRMMU_NOCACHE_ALCRATIO 64 /* 256 pages per 64MB of system RAM */ 33a439fe51SSam Ravnborg 341b6d06d8SSam Ravnborg #ifndef __ASSEMBLY__ 35*3293efa9SThomas Gleixner #include <asm/kmap_size.h> 361b6d06d8SSam Ravnborg 371b6d06d8SSam Ravnborg enum fixed_addresses { 381b6d06d8SSam Ravnborg FIX_HOLE, 391b6d06d8SSam Ravnborg #ifdef CONFIG_HIGHMEM 401b6d06d8SSam Ravnborg FIX_KMAP_BEGIN, 41*3293efa9SThomas Gleixner FIX_KMAP_END = (KM_MAX_IDX * NR_CPUS), 421b6d06d8SSam Ravnborg #endif 431b6d06d8SSam Ravnborg __end_of_fixed_addresses 441b6d06d8SSam Ravnborg }; 451b6d06d8SSam Ravnborg #endif 461b6d06d8SSam Ravnborg 471b6d06d8SSam Ravnborg /* Leave one empty page between IO pages at 0xfd000000 and 481b6d06d8SSam Ravnborg * the top of the fixmap. 491b6d06d8SSam Ravnborg */ 501b6d06d8SSam Ravnborg #define FIXADDR_TOP (0xfcfff000UL) 511b6d06d8SSam Ravnborg #define FIXADDR_SIZE ((FIX_KMAP_END + 1) << PAGE_SHIFT) 521b6d06d8SSam Ravnborg #define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) 531b6d06d8SSam Ravnborg 541b6d06d8SSam Ravnborg #define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) 551b6d06d8SSam Ravnborg 56a439fe51SSam Ravnborg #define SUN4M_IOBASE_VADDR 0xfd000000 /* Base for mapping pages */ 57a439fe51SSam Ravnborg #define IOBASE_VADDR 0xfe000000 58a439fe51SSam Ravnborg #define IOBASE_END 0xfe600000 59a439fe51SSam Ravnborg 60a439fe51SSam Ravnborg #define KADB_DEBUGGER_BEGVM 0xffc00000 /* Where kern debugger is in virt-mem */ 61a439fe51SSam Ravnborg #define KADB_DEBUGGER_ENDVM 0xffd00000 62a439fe51SSam Ravnborg #define DEBUG_FIRSTVADDR KADB_DEBUGGER_BEGVM 63a439fe51SSam Ravnborg #define DEBUG_LASTVADDR KADB_DEBUGGER_ENDVM 64a439fe51SSam Ravnborg 65a439fe51SSam Ravnborg #define LINUX_OPPROM_BEGVM 0xffd00000 66a439fe51SSam Ravnborg #define LINUX_OPPROM_ENDVM 0xfff00000 67a439fe51SSam Ravnborg 68a439fe51SSam Ravnborg #define DVMA_VADDR 0xfff00000 /* Base area of the DVMA on suns */ 69a439fe51SSam Ravnborg #define DVMA_END 0xfffc0000 70a439fe51SSam Ravnborg 71a439fe51SSam Ravnborg #endif /* !(_SPARC_VADDRS_H) */ 72