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pccons_isa.c revision 1.2 
      1 /* $NetBSD: pccons_isa.c,v 1.2 2002/01/07 21:46:57 thorpej 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 (at) 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/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/device.h>
     34 
     35 #include <machine/bus.h>
     36 
     37 #include <dev/isa/isavar.h>
     38 
     39 #include <arc/dev/pcconsvar.h>
     40 #include <arc/isa/pccons_isavar.h>
     41 
     42 int	pccons_isa_match __P((struct device *, struct cfdata *, void *));
     43 void	pccons_isa_attach __P((struct device *, struct device *, void *));
     44 
     45 struct cfattach pc_isa_ca = {
     46 	sizeof(struct pc_softc), pccons_isa_match, pccons_isa_attach,
     47 };
     48 
     49 struct pccons_config *pccons_isa_conf;
     50 
     51 int
     52 pccons_isa_match(parent, match, aux)
     53 	struct device *parent;
     54 	struct cfdata *match;
     55 	void *aux;
     56 {
     57 	struct isa_attach_args *ia = aux;
     58 	bus_addr_t iobase = 0x3b0;	/* XXX mono 0x3b0 color 0x3c0 */
     59 	bus_size_t iosize = 0x30;	/* XXX 0x20 */
     60 	bus_addr_t maddr = 0xa0000;
     61 	bus_size_t msize = 0x20000;
     62 	int irq = 1;
     63 
     64 	if (ia->ia_nio < 1)
     65 		return (0);
     66 	if (ia->ia_io[0].ir_addr != ISACF_PORT_DEFAULT)
     67 		iobase = ia->ia_io[0].ir_addr;
     68 #if 0	/* XXX isa.c */
     69 	if (ia->ia_iosize != 0)
     70 		iosize = ia->ia_iosize;
     71 #endif
     72 	if (ia->ia_niomem < 1)
     73 		return (0);
     74 	if (ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT)
     75 		maddr = ia->ia_iomem[0].ir_addr;
     76 	if (ia->ia_iomem[0].ir_size != ISACF_IOSIZ_DEFAULT)
     77 		msize = ia->ia_iomem[0].ir_size;
     78 
     79 	if (ia->ia_nirq < 1)
     80 		return (0);
     81 	if (ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT)
     82 		irq = ia->ia_irq[0].ir_irq;
     83 
     84 #if 0
     85 	/* If values are hardwired to something that they can't be, punt. */
     86 	if (iobase != 0x3b0 || iosize != 0x30 ||
     87 	    maddr != 0xa0000 || msize != 0x20000 ||
     88 	    ia->ia_irq != 1 || ia->ia_drq != DRQUNK)
     89 		return (0);
     90 #endif
     91 
     92 	if (pccons_isa_conf == NULL)
     93 		return (0);
     94 
     95 	if (!pccons_common_match(ia->ia_iot, ia->ia_memt, ia->ia_iot,
     96 	    pccons_isa_conf))
     97 		return (0);
     98 
     99 	ia->ia_nio = 1;
    100 	ia->ia_io[0].ir_addr = iobase;
    101 	ia->ia_io[0].ir_size = iosize;
    102 
    103 	ia->ia_niomem = 1;
    104 	ia->ia_iomem[0].ir_addr = maddr;
    105 	ia->ia_iomem[0].ir_size = msize;
    106 
    107 	ia->ia_nirq = 1;
    108 	ia->ia_irq[0].ir_irq = irq;
    109 
    110 	ia->ia_ndrq = 0;
    111 
    112 	return (1);
    113 }
    114 
    115 void
    116 pccons_isa_attach(parent, self, aux)
    117 	struct device *parent, *self;
    118 	void *aux;
    119 {
    120 	struct pc_softc *sc = (struct pc_softc *)self;
    121 	struct isa_attach_args *ia = aux;
    122 
    123 	isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, IST_EDGE, IPL_TTY,
    124 	    pcintr, self);
    125 	pccons_common_attach(sc, ia->ia_iot, ia->ia_memt, ia->ia_iot,
    126 	    pccons_isa_conf);
    127 }
    128 
    129 int
    130 pccons_isa_cnattach(iot, memt)
    131 	bus_space_tag_t iot, memt;
    132 {
    133 	if (pccons_isa_conf == NULL)
    134 		return (ENXIO);
    135 
    136 	pccons_common_cnattach(iot, memt, iot, pccons_isa_conf);
    137 	return (0);
    138 }
    139