Home | History | Annotate | Line # | Download | only in isa
pccons_isa.c revision 1.10 
      1 /* $NetBSD: pccons_isa.c,v 1.10 2008/09/13 16:15:38 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 (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/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: pccons_isa.c,v 1.10 2008/09/13 16:15:38 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 }
    138