1 /* $NetBSD: vga_isa.c,v 1.21 2008/03/14 22:12:08 cube 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 1.21 2008/03/14 22:12:08 cube 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(device_t, cfdata_t, void *); 51 void vga_isa_attach(device_t, device_t, void *); 52 53 CFATTACH_DECL_NEW(vga_isa, sizeof(struct vga_softc), 54 vga_isa_match, vga_isa_attach, NULL, NULL); 55 56 int 57 vga_isa_match(device_t parent, cfdata_t match, void *aux) 58 { 59 struct isa_attach_args *ia = aux; 60 61 if (ISA_DIRECT_CONFIG(ia)) 62 return (0); 63 64 /* If values are hardwired to something that they can't be, punt. */ 65 if (ia->ia_nio < 1 || 66 (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && 67 ia->ia_io[0].ir_addr != 0x3b0)) 68 return (0); 69 70 if (ia->ia_niomem < 1 || 71 (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM && 72 ia->ia_iomem[0].ir_addr != 0xa0000)) 73 return (0); 74 if (ia->ia_iomem[0].ir_size != 0 && 75 ia->ia_iomem[0].ir_size != 0x20000) 76 return (0); 77 78 if (ia->ia_nirq > 0 && 79 ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ) 80 return (0); 81 82 if (ia->ia_ndrq > 0 && 83 ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ) 84 return (0); 85 86 if (!vga_is_console(ia->ia_iot, WSDISPLAY_TYPE_ISAVGA) && 87 !vga_common_probe(ia->ia_iot, ia->ia_memt)) 88 return (0); 89 90 ia->ia_nio = 1; 91 ia->ia_io[0].ir_addr = 0x3b0; /* XXX mono 0x3b0 color 0x3c0 */ 92 ia->ia_io[0].ir_size = 0x30; /* XXX 0x20 */ 93 94 ia->ia_niomem = 1; 95 ia->ia_iomem[0].ir_addr = 0xa0000; 96 ia->ia_iomem[0].ir_size = 0x20000; 97 98 ia->ia_nirq = 0; 99 ia->ia_ndrq = 0; 100 101 return (2); /* more than generic pcdisplay */ 102 } 103 104 void 105 vga_isa_attach(device_t parent, device_t self, void *aux) 106 { 107 struct vga_softc *sc = device_private(self); 108 struct isa_attach_args *ia = aux; 109 110 sc->sc_dev = self; 111 aprint_normal("\n"); 112 113 vga_common_attach(sc, ia->ia_iot, ia->ia_memt, WSDISPLAY_TYPE_ISAVGA, 114 0, NULL); 115 } 116 117 int 118 vga_isa_cnattach(bus_space_tag_t iot, bus_space_tag_t memt) 119 { 120 121 return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1)); 122 } 123