sys/arch/arc/isa/pccons_isa.c

   1 /* $NetBSD: pccons_isa.c,v 1.9 2008/07/05 08:46:25 tsutsui Exp $ */
   2 /* NetBSD: vga_isa.c,v 1.4 2000/08/14 20:14:51 thorpej Exp  */
   3
   4 /*
   5  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
   6  * All rights reserved.
   7  *
   8  * Author: Chris G. Demetriou
   9  *
  10  * Permission to use, copy, modify and distribute this software and
  11  * its documentation is hereby granted, provided that both the copyright
  12  * notice and this permission notice appear in all copies of the
  13  * software, derivative works or modified versions, and any portions
  14  * thereof, and that both notices appear in supporting documentation.
  15  *
  16  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  17  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  18  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  19  *
  20  * Carnegie Mellon requests users of this software to return to
  21  *
  22  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  23  *  School of Computer Science
  24  *  Carnegie Mellon University
  25  *  Pittsburgh PA 15213-3890
  26  *
  27  * any improvements or extensions that they make and grant Carnegie the
  28  * rights to redistribute these changes.
  29  */
  30
  31 #include <sys/cdefs.h>
  32 __KERNEL_RCSID(0, "$NetBSD: pccons_isa.c,v 1.9 2008/07/05 08:46:25 tsutsui Exp $");
  33
  34 #include <sys/param.h>
  35 #include <sys/systm.h>
  36 #include <sys/device.h>
  37
  38 #include <machine/bus.h>
  39
  40 #include <dev/isa/isavar.h>
  41
  42 #include <arc/dev/pcconsvar.h>
  43 #include <arc/isa/pccons_isavar.h>
  44
  45 static int      pccons_isa_match(device_t, cfdata_t, void *);
  46 static void     pccons_isa_attach(device_t, device_t, void *);
  47
  48 CFATTACH_DECL_NEW(pc_isa, sizeof(struct pc_softc),
  49     pccons_isa_match, pccons_isa_attach, NULL, NULL);
  50
  51 struct pccons_config *pccons_isa_conf;
  52
  53 static int
  54 pccons_isa_match(device_t parent, cfdata_t cf, void *aux)
  55 {
  56         struct isa_attach_args *ia = aux;
  57         bus_addr_t iobase = 0x3b0;      /* XXX mono 0x3b0 color 0x3c0 */
  58         bus_size_t iosize = 0x30;       /* XXX 0x20 */
  59         bus_addr_t maddr = 0xa0000;
  60         bus_size_t msize = 0x20000;
  61         int irq = 1;
  62
  63         if (ia->ia_nio < 1)
  64                 return 0;
  65         if (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT)
  66                 iobase = ia->ia_io[0].ir_addr;
  67 #if 0   /* XXX isa.c */
  68         if (ia->ia_iosize != 0)
  69                 iosize = ia->ia_iosize;
  70 #endif
  71         if (ia->ia_niomem < 1)
  72                 return 0;
  73         if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM)
  74                 maddr = ia->ia_iomem[0].ir_addr;
  75         if (ia->ia_iomem[0].ir_size != ISA_UNKNOWN_IOSIZ)
  76                 msize = ia->ia_iomem[0].ir_size;
  77
  78         if (ia->ia_nirq < 1)
  79                 return 0;
  80         if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ)
  81                 irq = ia->ia_irq[0].ir_irq;
  82
  83 #if 0
  84         /* If values are hardwired to something that they can't be, punt. */
  85         if (iobase != 0x3b0 || iosize != 0x30 ||
  86             maddr != 0xa0000 || msize != 0x20000 ||
  87             ia->ia_irq != 1 || ia->ia_drq != DRQUNK)
  88                 return 0;
  89 #endif
  90
  91         if (pccons_isa_conf == NULL)
  92                 return 0;
  93
  94         if (!pccons_common_match(ia->ia_iot, ia->ia_memt, ia->ia_iot,
  95             pccons_isa_conf))
  96                 return 0;
  97
  98         ia->ia_nio = 1;
  99         ia->ia_io[0].ir_addr = iobase;
 100         ia->ia_io[0].ir_size = iosize;
 101
 102         ia->ia_niomem = 1;
 103         ia->ia_iomem[0].ir_addr = maddr;
 104         ia->ia_iomem[0].ir_size = msize;
 105
 106         ia->ia_nirq = 1;
 107         ia->ia_irq[0].ir_irq = irq;
 108
 109         ia->ia_ndrq = 0;
 110
 111         return 1;
 112 }
 113
 114 static void
 115 pccons_isa_attach(device_t parent, device_t self, void *aux)
 116 {
 117         struct pc_softc *sc = device_private(self);
 118         struct isa_attach_args *ia = aux;
 119
 120         sc->sc_dev = self;
 121
 122         isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, IST_EDGE, IPL_TTY,
 123             pcintr, sc);
 124         pccons_common_attach(sc, ia->ia_iot, ia->ia_memt, ia->ia_iot,
 125             pccons_isa_conf);
 126 }
 127
 128 int
 129 pccons_isa_cnattach(bus_space_tag_t iot, bus_space_tag_t memt)
 130 {
 131
 132         if (pccons_isa_conf == NULL)
 133                 return ENXIO;
 134
 135         pccons_common_cnattach(iot, memt, iot, pccons_isa_conf);
 136         return 0;
 137 }