xorg-server-1.4/hw/xfree86/os-support/bsd/memrange.h

   1 /*
   2  * Memory range attribute operations, peformed on /dev/mem
   3  */
   4
   5 #ifdef HAVE_XORG_CONFIG_H
   6 #include <xorg-config.h>
   7 #endif
   8
   9 #ifndef _MEMRANGE_H
  10 #define _MEMRANGE_H
  11
  12 /* Memory range attributes */
  13 #define MDF_UNCACHEABLE         (1<<0)  /* region not cached */
  14 #define MDF_WRITECOMBINE        (1<<1)  /* region supports "write combine"
  15                                          * action */
  16 #define MDF_WRITETHROUGH        (1<<2)  /* write-through cached */
  17 #define MDF_WRITEBACK           (1<<3)  /* write-back cached */
  18 #define MDF_WRITEPROTECT        (1<<4)  /* read-only region */
  19 #define MDF_ATTRMASK            (0x00ffffff)
  20
  21 #define MDF_FIXBASE             (1<<24) /* fixed base */
  22 #define MDF_FIXLEN              (1<<25) /* fixed length */
  23 #define MDF_FIRMWARE            (1<<26) /* set by firmware (XXX not useful?) */
  24 #define MDF_ACTIVE              (1<<27) /* currently active */
  25 #define MDF_BOGUS               (1<<28) /* we don't like it */
  26 #define MDF_FIXACTIVE           (1<<29) /* can't be turned off */
  27 #define MDF_BUSY                (1<<30) /* range is in use */
  28
  29 struct mem_range_desc {
  30         u_int64_t mr_base;
  31         u_int64_t mr_len;
  32         int     mr_flags;
  33         char    mr_owner[8];
  34 };
  35
  36 struct mem_range_op {
  37         struct mem_range_desc *mo_desc;
  38         int     mo_arg[2];
  39 #define MEMRANGE_SET_UPDATE     0
  40 #define MEMRANGE_SET_REMOVE     1
  41         /* XXX want a flag that says "set and undo when I exit" */
  42 };
  43 #define MEMRANGE_GET    _IOWR('m', 50, struct mem_range_op)
  44 #define MEMRANGE_SET    _IOW('m', 51, struct mem_range_op)
  45
  46 #ifdef _KERNEL
  47
  48 struct mem_range_softc;
  49 struct mem_range_ops {
  50         void    (*init) __P((struct mem_range_softc * sc));
  51         int     (*set) __P((struct mem_range_softc * sc, struct mem_range_desc * mrd, int *arg));
  52         void    (*initAP) __P((struct mem_range_softc * sc));
  53 };
  54
  55 struct mem_range_softc {
  56         struct mem_range_ops *mr_op;
  57         int     mr_cap;
  58         int     mr_ndesc;
  59         struct mem_range_desc *mr_desc;
  60 };
  61
  62 extern struct mem_range_softc mem_range_softc;
  63
  64 extern int mem_range_attr_get __P((struct mem_range_desc * mrd, int *arg));
  65 extern int mem_range_attr_set __P((struct mem_range_desc * mrd, int *arg));
  66 extern void mem_range_AP_init __P((void));
  67 #endif
  68
  69 #endif