chipsfb.c revision 1.27
1 /* $NetBSD: chipsfb.c,v 1.27 2011/03/23 04:02:43 macallan Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Michael Lorenz 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * A console driver for Chips & Technologies 65550 graphics controllers 30 * tested on macppc only so far 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: chipsfb.c,v 1.27 2011/03/23 04:02:43 macallan Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/device.h> 40 #include <sys/kauth.h> 41 42 #include <dev/pci/pcivar.h> 43 #include <dev/pci/pcireg.h> 44 #include <dev/pci/pcidevs.h> 45 #include <dev/pci/pciio.h> 46 #include <dev/pci/wsdisplay_pci.h> 47 48 49 #include <dev/ic/ct65550reg.h> 50 #include <dev/ic/ct65550var.h> 51 52 #include "opt_wsemul.h" 53 #include "opt_chipsfb.h" 54 55 struct chipsfb_pci_softc { 56 struct chipsfb_softc sc_chips; 57 pci_chipset_tag_t sc_pc; 58 pcitag_t sc_pcitag; 59 }; 60 61 static int chipsfb_pci_match(device_t, cfdata_t, void *); 62 static void chipsfb_pci_attach(device_t, device_t, void *); 63 static int chipsfb_pci_ioctl(void *, void *, u_long, void *, int, 64 struct lwp *); 65 66 CFATTACH_DECL_NEW(chipsfb_pci, sizeof(struct chipsfb_pci_softc), 67 chipsfb_pci_match, chipsfb_pci_attach, NULL, NULL); 68 69 static int 70 chipsfb_pci_match(device_t parent, cfdata_t match, void *aux) 71 { 72 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 73 74 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY || 75 PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_DISPLAY_VGA) 76 return 0; 77 if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CHIPS) && 78 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CHIPS_65550)) 79 return 100; 80 if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CHIPS) && 81 (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CHIPS_65554)) 82 return 100; 83 return 0; 84 } 85 86 static void 87 chipsfb_pci_attach(device_t parent, device_t self, void *aux) 88 { 89 struct chipsfb_pci_softc *scp = device_private(self); 90 struct chipsfb_softc *sc = &scp->sc_chips; 91 struct pci_attach_args *pa = aux; 92 char devinfo[256]; 93 pcireg_t screg; 94 95 scp->sc_pc = pa->pa_pc; 96 scp->sc_pcitag = pa->pa_tag; 97 sc->sc_dev = self; 98 99 screg = pci_conf_read(scp->sc_pc, scp->sc_pcitag, 100 PCI_COMMAND_STATUS_REG); 101 screg |= PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 102 pci_conf_write(scp->sc_pc, scp->sc_pcitag, PCI_COMMAND_STATUS_REG, 103 screg); 104 105 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 106 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, 107 PCI_REVISION(pa->pa_class)); 108 #ifdef CHIPSFB_DEBUG 109 printf(prop_dictionary_externalize(dict)); 110 #endif 111 112 sc->sc_memt = pa->pa_memt; 113 sc->sc_iot = pa->pa_iot; 114 sc->sc_ioctl = chipsfb_pci_ioctl; 115 sc->sc_mmap = NULL; 116 117 /* the framebuffer */ 118 sc->sc_fb = (pci_conf_read(scp->sc_pc, scp->sc_pcitag, PCI_BAR0) & 119 ~PCI_MAPREG_MEM_TYPE_MASK); 120 sc->sc_fbsize = 0x01000000; /* 16MB aperture */ 121 122 if (bus_space_map(sc->sc_memt, sc->sc_fb, 0x400000, 123 BUS_SPACE_MAP_LINEAR, &sc->sc_fbh)) { 124 aprint_error_dev(sc->sc_dev, 125 "failed to map the frame buffer.\n"); 126 } 127 128 if (bus_space_map(sc->sc_memt, sc->sc_fb + CT_OFF_BITBLT, 0x20000, 129 BUS_SPACE_MAP_LINEAR, &sc->sc_mmregh)) { 130 aprint_error_dev(sc->sc_dev, 131 "failed to map MMIO registers.\n"); 132 } 133 134 /* IO-mapped registers */ 135 if (bus_space_map(sc->sc_iot, 0x0, 0x400, 0, &sc->sc_ioregh) != 0) { 136 aprint_error_dev(sc->sc_dev, "failed to map IO registers.\n"); 137 } 138 139 sc->memsize = chipsfb_probe_vram(sc); 140 141 chipsfb_do_attach(sc); 142 } 143 144 static int 145 chipsfb_pci_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 146 struct lwp *l) 147 { 148 struct vcons_data *vd = v; 149 struct chipsfb_softc *sc = vd->cookie; 150 struct chipsfb_pci_softc *scp = vd->cookie; 151 152 switch (cmd) { 153 /* PCI config read/write passthrough. */ 154 case PCI_IOC_CFGREAD: 155 case PCI_IOC_CFGWRITE: 156 return pci_devioctl(scp->sc_pc, scp->sc_pcitag, 157 cmd, data, flag, l); 158 159 case WSDISPLAYIO_GET_BUSID: 160 return wsdisplayio_busid_pci(sc->sc_dev, scp->sc_pc, 161 scp->sc_pcitag, data); 162 } 163 return EPASSTHROUGH; 164 } 165
Indexes created Tue Sep 23 23:09:58 GMT 2025