122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* $NetBSD: vga_isa.c,v 1.15 2002/10/02 03:10:50 thorpej Exp $ */
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/*
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: vga_isa.c,v 1.15 2002/10/02 03:10:50 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <dev/isa/isavar.h>
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#include <dev/ic/mc6845reg.h>
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#include <dev/ic/pcdisplayvar.h>
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#include <dev/ic/vgareg.h>
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#include <dev/ic/vgavar.h>
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#include <dev/isa/vga_isavar.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/wscons/wsdisplayvar.h>
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int vga_isa_match(struct device *, struct cfdata *, void *);
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void vga_isa_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(vga_isa, sizeof(struct vga_softc),
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vga_isa_match, vga_isa_attach, NULL, NULL);
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int
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vga_isa_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct isa_attach_args *ia = aux;
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if (ISA_DIRECT_CONFIG(ia))
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return (0);
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/* If values are hardwired to something that they can't be, punt. */
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if (ia->ia_nio < 1 ||
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(ia->ia_io[0].ir_addr != ISACF_PORT_DEFAULT &&
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ia->ia_io[0].ir_addr != 0x3b0))
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return (0);
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if (ia->ia_niomem < 1 ||
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(ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT &&
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ia->ia_iomem[0].ir_addr != 0xa0000))
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return (0);
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if (ia->ia_iomem[0].ir_size != 0 &&
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ia->ia_iomem[0].ir_size != 0x20000)
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return (0);
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if (ia->ia_nirq > 0 &&
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ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT)
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return (0);
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if (ia->ia_ndrq > 0 &&
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ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT)
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return (0);
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if (!vga_is_console(ia->ia_iot, WSDISPLAY_TYPE_ISAVGA) &&
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!vga_common_probe(ia->ia_iot, ia->ia_memt))
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return (0);
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ia->ia_nio = 1;
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ia->ia_io[0].ir_addr = 0x3b0; /* XXX mono 0x3b0 color 0x3c0 */
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ia->ia_io[0].ir_size = 0x30; /* XXX 0x20 */
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ia->ia_niomem = 1;
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ia->ia_iomem[0].ir_addr = 0xa0000;
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ia->ia_iomem[0].ir_size = 0x20000;
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ia->ia_nirq = 0;
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ia->ia_ndrq = 0;
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return (2); /* more than generic pcdisplay */
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}
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void
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vga_isa_attach(struct device *parent, struct device *self, void *aux)
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{
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struct vga_softc *sc = (void *) self;
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struct isa_attach_args *ia = aux;
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printf("\n");
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vga_common_attach(sc, ia->ia_iot, ia->ia_memt, WSDISPLAY_TYPE_ISAVGA,
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0, NULL);
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}
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int
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vga_isa_cnattach(bus_space_tag_t iot, bus_space_tag_t memt)
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{
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return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1));
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}
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