1/* $NetBSD: vga_isa.c,v 1.22 2022/09/25 17:09:36 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 1.22 2022/09/25 17:09:36 thorpej Exp $"); 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/kernel.h> 36#include <sys/device.h> 37 38#include <dev/isa/isavar.h> 39 40#include <dev/ic/mc6845reg.h> 41#include <dev/ic/pcdisplayvar.h> 42#include <dev/ic/vgareg.h> 43#include <dev/ic/vgavar.h> 44#include <dev/isa/vga_isavar.h> 45 46#include <dev/wscons/wsconsio.h> 47#include <dev/wscons/wsdisplayvar.h> 48 49int vga_isa_match(device_t, cfdata_t, void *); 50void vga_isa_attach(device_t, device_t, void *); 51 52CFATTACH_DECL_NEW(vga_isa, sizeof(struct vga_softc), 53 vga_isa_match, vga_isa_attach, NULL, NULL); 54 55int 56vga_isa_match(device_t parent, cfdata_t match, void *aux) 57{ 58 struct isa_attach_args *ia = aux; 59 60 if (ISA_DIRECT_CONFIG(ia)) 61 return (0); 62 63 /* If values are hardwired to something that they can't be, punt. */ 64 if (ia->ia_nio < 1 || 65 (ia->ia_io[0].ir_addr != ISA_UNKNOWN_PORT && 66 ia->ia_io[0].ir_addr != 0x3b0)) 67 return (0); 68 69 if (ia->ia_niomem < 1 || 70 (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM && 71 ia->ia_iomem[0].ir_addr != 0xa0000)) 72 return (0); 73 if (ia->ia_iomem[0].ir_size != 0 && 74 ia->ia_iomem[0].ir_size != 0x20000) 75 return (0); 76 77 if (ia->ia_nirq > 0 && 78 ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ) 79 return (0); 80 81 if (ia->ia_ndrq > 0 && 82 ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ) 83 return (0); 84 85 if (!vga_is_console(ia->ia_iot, WSDISPLAY_TYPE_ISAVGA) && 86 !vga_common_probe(ia->ia_iot, ia->ia_memt)) 87 return (0); 88 89 ia->ia_nio = 1; 90 ia->ia_io[0].ir_addr = 0x3b0; /* XXX mono 0x3b0 color 0x3c0 */ 91 ia->ia_io[0].ir_size = 0x30; /* XXX 0x20 */ 92 93 ia->ia_niomem = 1; 94 ia->ia_iomem[0].ir_addr = 0xa0000; 95 ia->ia_iomem[0].ir_size = 0x20000; 96 97 ia->ia_nirq = 0; 98 ia->ia_ndrq = 0; 99 100 return (2); /* more than generic pcdisplay */ 101} 102 103void 104vga_isa_attach(device_t parent, device_t self, void *aux) 105{ 106 struct vga_softc *sc = device_private(self); 107 struct isa_attach_args *ia = aux; 108 109 sc->sc_dev = self; 110 aprint_normal("\n"); 111 112 vga_common_attach(sc, ia->ia_iot, ia->ia_memt, WSDISPLAY_TYPE_ISAVGA, 113 0, NULL); 114} 115 116int 117vga_isa_cnattach(bus_space_tag_t iot, bus_space_tag_t memt) 118{ 119 120 return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1)); 121} 122