include/asm-sparc/vaddrs.h

/* */
   1 /* $Id: vaddrs.h,v 1.15 1995/11/25 02:33:20 davem Exp $ */
   2 #ifndef _SPARC_VADDRS_H
   3 #define _SPARC_VADDRS_H
   4 
   5 #include <asm/head.h>
   6 
   7 /* asm-sparc/vaddrs.h:  Here will be define the virtual addresses at
   8  *                      which important I/O addresses will be mapped.
   9  *                      For instance the timer register virtual address
  10  *                      is defined here.
  11  *
  12  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
  13  */
  14 
  15 /* I can see only one reason why we should have statically defined
  16  * mappings for devices and is the speedup improvements of not loading
  17  * a pointer and then the value in the assembly code
  18  */
  19 
  20 #define  AUXIO_VADDR  (KERNBASE+0x6000)    /* Auxiliary IO register */
  21 #define  TIMER_VADDR  (AUXIO_VADDR+0x1000) /* One page after AUXIO, length is
  22                                             * 5 pages which is needed on sun4m.
  23                                             */
  24 #define  INTREG_VADDR (TIMER_VADDR+0x5000)
  25 
  26 #define  IOBASE_VADDR   0xfe000000  /* Base for mapping pages */
  27 #define  IOBASE_LEN     0x00100000  /* Length of the IO area */
  28 #define  IOBASE_END     0xfe100000
  29 #define  DVMA_VADDR     0xfff00000  /* Base area of the DVMA on suns */
  30 #define  DVMA_LEN       0x00040000  /* Size of the DVMA address space */
  31 #define  DVMA_END       0xfff40000
  32 
  33 /* On sun4m machines we need per-cpu virtual areas */
  34 #define  PERCPU_VADDR   0xff000000  /* Base for per-cpu virtual mappings */
  35 #define  PERCPU_ENTSIZE 0x00100000
  36 #define  PERCPU_LEN     ((PERCPU_ENTSIZE*NCPUS))
  37 
  38 /* per-cpu offsets */
  39 #define  PERCPU_TBR_OFFSET      0x00000      /* %tbr, mainly used for identification. */
  40 #define  PERCPU_KSTACK_OFFSET   0x01000      /* Beginning of kernel stack for this cpu */
  41 #define  PERCPU_MBOX_OFFSET     0x02000      /* Prom SMP Mailbox */
  42 #define  PERCPU_CPUID_OFFSET    0x03000      /* Per-cpu ID number. */
  43 #define  PERCPU_ISALIVE_OFFSET  0x03004      /* Has CPU been initted yet? */
  44 #define  PERCPU_ISIDLING_OFFSET 0x03008      /* Is CPU in idle loop spinning? */
  45 
  46 #endif /* !(_SPARC_VADDRS_H) */
/* */
root/include/asm-sparc/vaddrs.h

INCLUDED FROM
