1 /* $NetBSD: vga_isa.c,v 1.7 2002/01/07 21:47:13 thorpej 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: vga_isa.c,v 1.7 2002/01/07 21:47:13 thorpej Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/device.h> 37 #include <sys/malloc.h> 38 39 #include <dev/isa/isavar.h> 40 41 #include <dev/ic/mc6845reg.h> 42 #include <dev/ic/pcdisplayvar.h> 43 #include <dev/ic/vgareg.h> 44 #include <dev/ic/vgavar.h> 45 #include <dev/isa/vga_isavar.h> 46 47 #include <dev/wscons/wsconsio.h> 48 #include <dev/wscons/wsdisplayvar.h> 49 50 int vga_isa_match __P((struct device *, struct cfdata *, void *)); 51 void vga_isa_attach __P((struct device *, struct device *, void *)); 52 53 struct cfattach vga_isa_ca = { 54 sizeof(struct vga_softc), vga_isa_match, vga_isa_attach, 55 }; 56 57 int 58 vga_isa_match(parent, match, aux) 59 struct device *parent; 60 struct cfdata *match; 61 void *aux; 62 { 63 struct isa_attach_args *ia = aux; 64 65 if (ISA_DIRECT_CONFIG(ia)) 66 return (0); 67 68 /* If values are hardwired to something that they can't be, punt. */ 69 if (ia->ia_nio < 1 || 70 (ia->ia_io[0].ir_addr != ISACF_PORT_DEFAULT && 71 ia->ia_io[0].ir_addr != 0x3b0)) 72 return (0); 73 74 if (ia->ia_niomem < 1 || 75 (ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT && 76 ia->ia_iomem[0].ir_addr != 0xa0000)) 77 return (0); 78 if (ia->ia_iomem[0].ir_size != 0 && 79 ia->ia_iomem[0].ir_size != 0x20000) 80 return (0); 81 82 if (ia->ia_nirq > 0 && 83 ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT) 84 return (0); 85 86 if (ia->ia_ndrq > 0 && 87 ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT) 88 return (0); 89 90 if (!vga_is_console(ia->ia_iot, WSDISPLAY_TYPE_ISAVGA) && 91 !vga_common_probe(ia->ia_iot, ia->ia_memt)) 92 return (0); 93 94 ia->ia_nio = 1; 95 ia->ia_io[0].ir_addr = 0x3b0; /* XXX mono 0x3b0 color 0x3c0 */ 96 ia->ia_io[0].ir_size = 0x30; /* XXX 0x20 */ 97 98 ia->ia_niomem = 1; 99 ia->ia_iomem[0].ir_addr = 0xa0000; 100 ia->ia_iomem[0].ir_size = 0x20000; 101 102 ia->ia_nirq = 0; 103 ia->ia_ndrq = 0; 104 105 return (2); /* more than generic pcdisplay */ 106 } 107 108 void 109 vga_isa_attach(parent, self, aux) 110 struct device *parent, *self; 111 void *aux; 112 { 113 struct vga_softc *sc = (void *) self; 114 struct isa_attach_args *ia = aux; 115 116 printf("\n"); 117 118 vga_common_attach(sc, ia->ia_iot, ia->ia_memt, WSDISPLAY_TYPE_ISAVGA, 119 NULL); 120 } 121 122 int 123 vga_isa_cnattach(iot, memt) 124 bus_space_tag_t iot, memt; 125 { 126 return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1)); 127 } 128