sys/arch/arc/isa/opms_isa.c

   1 /* $NetBSD: opms_isa.c,v 1.9 2008/07/05 08:46:25 tsutsui Exp $ */
   2
   3 /*
   4  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
   5  * All rights reserved.
   6  *
   7  * Author: Chris G. Demetriou
   8  *
   9  * Permission to use, copy, modify and distribute this software and
  10  * its documentation is hereby granted, provided that both the copyright
  11  * notice and this permission notice appear in all copies of the
  12  * software, derivative works or modified versions, and any portions
  13  * thereof, and that both notices appear in supporting documentation.
  14  *
  15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  18  *
  19  * Carnegie Mellon requests users of this software to return to
  20  *
  21  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  22  *  School of Computer Science
  23  *  Carnegie Mellon University
  24  *  Pittsburgh PA 15213-3890
  25  *
  26  * any improvements or extensions that they make and grant Carnegie the
  27  * rights to redistribute these changes.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __KERNEL_RCSID(0, "$NetBSD: opms_isa.c,v 1.9 2008/07/05 08:46:25 tsutsui Exp $");
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/tty.h>
  36 #include <sys/device.h>
  37
  38 #include <machine/bus.h>
  39
  40 #include <dev/isa/isareg.h>
  41 #include <dev/isa/isavar.h>
  42
  43 #include <arc/dev/pcconsvar.h>
  44 #include <arc/dev/opmsvar.h>
  45
  46 static int      opms_isa_match(device_t, cfdata_t, void *);
  47 static void     opms_isa_attach(device_t, device_t, void *);
  48
  49 CFATTACH_DECL_NEW(opms_isa, sizeof(struct opms_softc),
  50     opms_isa_match, opms_isa_attach, NULL, NULL);
  51
  52 struct pccons_config *pccons_isa_conf;  /* share stroage with pccons_isa.c */
  53
  54 static int
  55 opms_isa_match(device_t parent, cfdata_t cf, void *aux)
  56 {
  57         struct isa_attach_args *ia = aux;
  58         bus_addr_t iobase = IO_KBD;
  59         bus_size_t iosize = IO_KBDSIZE;
  60         int irq = 12;
  61
  62         if (ia->ia_nio < 1)
  63                 return 0;
  64         if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT)
  65                 iobase = ia->ia_io[0].ir_addr;
  66 #if 0   /* XXX isa.c */
  67         if (ia->ia_iosize != 0)
  68                 iosize = ia->ia_iosize;
  69 #endif
  70         if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ)
  71                 irq = ia->ia_irq[0].ir_irq;
  72
  73 #if 0
  74         /* If values are hardwired to something that they can't be, punt. */
  75         if (iobase != IO_KBD || iosize != IO_KBDSIZE ||
  76             ia->ia_maddr != MADDRUNK || ia->ia_msize != 0 ||
  77             ia->ia_irq != 1 || ia->ia_drq != DRQUNK)
  78                 return 0;
  79 #endif
  80
  81         if (pccons_isa_conf == NULL)
  82                 return 0;
  83
  84         if (!opms_common_match(ia->ia_iot, pccons_isa_conf))
  85                 return 0;
  86
  87         ia->ia_nio = 1;
  88         ia->ia_io[0].ir_addr = iobase;
  89         ia->ia_io[0].ir_size = iosize;
  90
  91         ia->ia_nirq = 1;
  92         ia->ia_irq[0].ir_irq = irq;
  93
  94         ia->ia_niomem = 0;
  95         ia->ia_ndrq = 0;
  96
  97         return 1;
  98 }
  99
 100 static void
 101 opms_isa_attach(device_t parent, device_t self, void *aux)
 102 {
 103         struct opms_softc *sc = device_private(self);
 104         struct isa_attach_args *ia = aux;
 105
 106         sc->sc_dev = self;
 107
 108         aprint_normal("\n");
 109
 110         isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, IST_EDGE, IPL_TTY,
 111             pcintr, sc);
 112         opms_common_attach(sc, ia->ia_iot, pccons_isa_conf);
 113 }