Equipped Device Table (EDT) Changes

The following information is from /usr/include/sys/edt.h:

#define NBASE 3
typedef unsigned long iopaddr_t;
typedef struct iospace {
   unchar    ios_type;     /* io space type on the adapter */
   iopaddr_t ios_iopaddr;  /* io space base address */
   ulong     ios_size;
   caddr_t   ios_vaddr;    /* kernel virtual address */
} iospace_t;

typedef struct edt {
   uint_t    e_bus_type;   /* vme, scsi, eisa... */
   unchar    v_cpuintr;    /* cpu to send intr to */
   unchar    v_setcpuintr; /* cpu field is valid */
   uint_t    e_adap;       /* adapter */
   uint_t    e_ctlr;       /* controller identifier */
   void*     e_bus_info;   /* bus-dependent info */
   int       (*e_init)();  /* device init/run-time probe */
   iospace_t e_space[NBASE];
} edt_t;

#define    e_base e_space[0].ios_vaddr
#define    e_base2 e_space[1].ios_vaddr
#define    e_base3 e_space[2].ios_vaddr
#define    e_iobase e_space[0].ios_iopaddr
#define    e_iobase2 e_space[1].ios_iopaddr
#define    e_iobase3 e_space[2].ios_iopaddr

The e_bus_info field points to the following structure:

typedef struct vme_intrs {
   int (*v_vintr)();        /* interrupt routine */
   unsigned    char v_vec;  /* vme vector */
   unsigned    char v_brl;  /* interrupt priority level */
   unsigned    char v_unit; /* software identifier */
} vme_intrs_t;

mydrvredtinit(struct edt *e)
{
   piomap_t *piomap;
   vme_intrs_t *intrs = e->e_bus_info;
[...]
 piomap = pio_mapalloc(e->e_bus_type, e->e_adap, 
   &e->e_space[0], PIOMAP_FIXED, "mydrvr");

 if (piomap == 0) {
      /* This could fail because the adapter isn't valid
       * or invalid addresses or there are no more
       * fixed mappings available in the case of A32.
       */
      printf("mydrvr not installed\n");
      return;
   }

 e->e_base = pio_mapaddr(piomap, e->e_iobase);

   /* You can now use e->e_base as a normal address 
    * to access your controller.
    */
[...]
/* Now allocate a VME IRQ vector and register 
    * the interrupt routine.
    */
 ipl = intrs->v_brl;

 
 vec = vme_ivec_alloc(e->e_adap);

 if (vec == -1) {
 cmn_err(CE_WARN,"mydrvredtinit: no interrupt vector\n");
 pio_mapfree(piomap);
 return;
 }
 vme_ivec_set(e->e_adap, vec, mydrvrintr, e->e_ctlr);
[...]
}