diff options
Diffstat (limited to 'arch/sparc/include/asm/vaddrs.h')
| -rw-r--r-- | arch/sparc/include/asm/vaddrs.h | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/arch/sparc/include/asm/vaddrs.h b/arch/sparc/include/asm/vaddrs.h index 541e13755ce..c3dbcf90203 100644 --- a/arch/sparc/include/asm/vaddrs.h +++ b/arch/sparc/include/asm/vaddrs.h @@ -30,26 +30,32 @@ */ #define SRMMU_NOCACHE_ALCRATIO 64 /* 256 pages per 64MB of system RAM */ +#ifndef __ASSEMBLY__ +#include <asm/kmap_types.h> + +enum fixed_addresses { + FIX_HOLE, +#ifdef CONFIG_HIGHMEM + FIX_KMAP_BEGIN, + FIX_KMAP_END = (KM_TYPE_NR * NR_CPUS), +#endif + __end_of_fixed_addresses +}; +#endif + +/* Leave one empty page between IO pages at 0xfd000000 and + * the top of the fixmap. + */ +#define FIXADDR_TOP (0xfcfff000UL) +#define FIXADDR_SIZE ((FIX_KMAP_END + 1) << PAGE_SHIFT) +#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE) + +#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT)) + #define SUN4M_IOBASE_VADDR 0xfd000000 /* Base for mapping pages */ #define IOBASE_VADDR 0xfe000000 #define IOBASE_END 0xfe600000 -/* - * On the sun4/4c we need a place - * to reliably map locked down kernel data. This includes the - * task_struct and kernel stack pages of each process plus the - * scsi buffers during dvma IO transfers, also the floppy buffers - * during pseudo dma which runs with traps off (no faults allowed). - * Some quick calculations yield: - * NR_TASKS <512> * (3 * PAGE_SIZE) == 0x600000 - * Subtract this from 0xc00000 and you get 0x927C0 of vm left - * over to map SCSI dvma + floppy pseudo-dma buffers. So be - * careful if you change NR_TASKS or else there won't be enough - * room for it all. - */ -#define SUN4C_LOCK_VADDR 0xff000000 -#define SUN4C_LOCK_END 0xffc00000 - #define KADB_DEBUGGER_BEGVM 0xffc00000 /* Where kern debugger is in virt-mem */ #define KADB_DEBUGGER_ENDVM 0xffd00000 #define DEBUG_FIRSTVADDR KADB_DEBUGGER_BEGVM |