Annotation of sys/dev/pci/vga_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: vga_pci.c,v 1.26 2007/01/28 20:28:50 gwk Exp $ */
! 2: /* $NetBSD: vga_pci.c,v 1.3 1998/06/08 06:55:58 thorpej Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2001 Wasabi Systems, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * Written by Frank van der Linden for Wasabi Systems, Inc.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed for the NetBSD Project by
! 21: * Wasabi Systems, Inc.
! 22: * 4. The name of Wasabi Systems, Inc. may not be used to endorse
! 23: * or promote products derived from this software without specific prior
! 24: * written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
! 27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
! 30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 36: * POSSIBILITY OF SUCH DAMAGE.
! 37: */
! 38: /*
! 39: * Copyright (c) 1995, 1996 Carnegie-Mellon University.
! 40: * All rights reserved.
! 41: *
! 42: * Author: Chris G. Demetriou
! 43: *
! 44: * Permission to use, copy, modify and distribute this software and
! 45: * its documentation is hereby granted, provided that both the copyright
! 46: * notice and this permission notice appear in all copies of the
! 47: * software, derivative works or modified versions, and any portions
! 48: * thereof, and that both notices appear in supporting documentation.
! 49: *
! 50: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
! 51: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
! 52: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
! 53: *
! 54: * Carnegie Mellon requests users of this software to return to
! 55: *
! 56: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
! 57: * School of Computer Science
! 58: * Carnegie Mellon University
! 59: * Pittsburgh PA 15213-3890
! 60: *
! 61: * any improvements or extensions that they make and grant Carnegie the
! 62: * rights to redistribute these changes.
! 63: */
! 64:
! 65: #include "vga.h"
! 66:
! 67: #include <sys/param.h>
! 68: #include <sys/systm.h>
! 69: #include <sys/kernel.h>
! 70: #include <sys/device.h>
! 71: #include <sys/malloc.h>
! 72: #include <sys/agpio.h>
! 73:
! 74: #include <uvm/uvm.h>
! 75:
! 76: #include <machine/bus.h>
! 77:
! 78: #include <dev/pci/pcireg.h>
! 79: #include <dev/pci/pcivar.h>
! 80: #include <dev/pci/pcidevs.h>
! 81:
! 82: #include <dev/ic/mc6845reg.h>
! 83: #include <dev/ic/pcdisplayvar.h>
! 84: #include <dev/ic/vgareg.h>
! 85: #include <dev/ic/vgavar.h>
! 86: #include <dev/pci/vga_pcivar.h>
! 87:
! 88:
! 89: #include <dev/wscons/wsconsio.h>
! 90: #include <dev/wscons/wsdisplayvar.h>
! 91:
! 92: #ifdef VESAFB
! 93: #include <dev/vesa/vesabiosvar.h>
! 94: #endif
! 95:
! 96: int vga_pci_match(struct device *, void *, void *);
! 97: void vga_pci_attach(struct device *, struct device *, void *);
! 98: paddr_t vga_pci_mmap(void* v, off_t off, int prot);
! 99:
! 100: #ifdef VESAFB
! 101: int vesafb_putcmap(struct vga_pci_softc *, struct wsdisplay_cmap *);
! 102: int vesafb_getcmap(struct vga_pci_softc *, struct wsdisplay_cmap *);
! 103: #endif
! 104:
! 105: struct cfattach vga_pci_ca = {
! 106: sizeof(struct vga_pci_softc), vga_pci_match, vga_pci_attach,
! 107: };
! 108:
! 109: int
! 110: vga_pci_match(struct device *parent, void *match, void *aux)
! 111: {
! 112: struct pci_attach_args *pa = aux;
! 113: int potential;
! 114:
! 115: potential = 0;
! 116:
! 117: /*
! 118: * If it's prehistoric/vga or display/vga, we might match.
! 119: * For the console device, this is jut a sanity check.
! 120: */
! 121: if (PCI_CLASS(pa->pa_class) == PCI_CLASS_PREHISTORIC &&
! 122: PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_PREHISTORIC_VGA)
! 123: potential = 1;
! 124: if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY &&
! 125: PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_DISPLAY_VGA)
! 126: potential = 1;
! 127:
! 128: if (!potential)
! 129: return (0);
! 130:
! 131: /* check whether it is disabled by firmware */
! 132: if ((pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG)
! 133: & (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE))
! 134: != (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE))
! 135: return (0);
! 136:
! 137: /* If it's the console, we have a winner! */
! 138: if (vga_is_console(pa->pa_iot, WSDISPLAY_TYPE_PCIVGA))
! 139: return (1);
! 140:
! 141: /*
! 142: * If we might match, make sure that the card actually looks OK.
! 143: */
! 144: if (!vga_common_probe(pa->pa_iot, pa->pa_memt))
! 145: return (0);
! 146:
! 147: return (1);
! 148: }
! 149:
! 150: void
! 151: vga_pci_attach(struct device *parent, struct device *self, void *aux)
! 152: {
! 153: struct pci_attach_args *pa = aux;
! 154: pcireg_t reg;
! 155: #ifdef VESAFB
! 156: struct vga_pci_softc *sc = (struct vga_pci_softc *)self;
! 157: #endif
! 158:
! 159: /*
! 160: * Enable bus master; X might need this for accelerated graphics.
! 161: */
! 162: reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
! 163: reg |= PCI_COMMAND_MASTER_ENABLE;
! 164: pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg);
! 165:
! 166: #ifdef PCIAGP
! 167: agp_attach(parent, self, aux);
! 168: #endif
! 169: #ifdef VESAFB
! 170: if (vesabios_softc != NULL && vesabios_softc->sc_nmodes > 0) {
! 171: sc->sc_textmode = vesafb_get_mode(sc);
! 172: printf(", vesafb\n");
! 173: vga_extended_attach(self, pa->pa_iot, pa->pa_memt,
! 174: WSDISPLAY_TYPE_PCIVGA, vga_pci_mmap);
! 175: return;
! 176: }
! 177: #endif
! 178: printf("\n");
! 179: vga_common_attach(self, pa->pa_iot, pa->pa_memt,
! 180: WSDISPLAY_TYPE_PCIVGA);
! 181: }
! 182:
! 183: paddr_t
! 184: vga_pci_mmap(void *v, off_t off, int prot)
! 185: {
! 186: #ifdef VESAFB
! 187: struct vga_config *vc = (struct vga_config *)v;
! 188: struct vga_pci_softc *sc = (struct vga_pci_softc *)vc->vc_softc;
! 189:
! 190: if (sc->sc_mode == WSDISPLAYIO_MODE_DUMBFB) {
! 191: if (off < 0 || off > vesabios_softc->sc_size)
! 192: return (-1);
! 193: return atop(sc->sc_base + off);
! 194: }
! 195: #endif
! 196: #ifdef PCIAGP
! 197: return agp_mmap(v, off, prot);
! 198: #else
! 199: return -1;
! 200: #endif
! 201: }
! 202:
! 203: int
! 204: vga_pci_cnattach(bus_space_tag_t iot, bus_space_tag_t memt,
! 205: pci_chipset_tag_t pc, int bus, int device, int function)
! 206: {
! 207: return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_PCIVGA, 0));
! 208: }
! 209:
! 210: int
! 211: vga_pci_ioctl(void *v, u_long cmd, caddr_t addr, int flag, struct proc *pb)
! 212: {
! 213: int error = 0;
! 214: #ifdef VESAFB
! 215: struct vga_config *vc = (struct vga_config *)v;
! 216: struct vga_pci_softc *sc = (struct vga_pci_softc *)vc->vc_softc;
! 217: struct wsdisplay_fbinfo *wdf;
! 218: struct wsdisplay_gfx_mode *gfxmode;
! 219: int mode;
! 220: #endif
! 221:
! 222: switch (cmd) {
! 223: #ifdef VESAFB
! 224: case WSDISPLAYIO_SMODE:
! 225: mode = *(u_int *)addr;
! 226: switch (mode) {
! 227: case WSDISPLAYIO_MODE_EMUL:
! 228: /* back to text mode */
! 229: vesafb_set_mode(sc, sc->sc_textmode);
! 230: sc->sc_mode = mode;
! 231: break;
! 232: case WSDISPLAYIO_MODE_DUMBFB:
! 233: if (sc->sc_gfxmode == -1)
! 234: return (-1);
! 235: vesafb_set_mode(sc, sc->sc_gfxmode);
! 236: sc->sc_mode = mode;
! 237: break;
! 238: default:
! 239: error = -1;
! 240: }
! 241: break;
! 242: case WSDISPLAYIO_GINFO:
! 243: if (sc->sc_gfxmode == -1)
! 244: return (-1);
! 245: wdf = (void *)addr;
! 246: wdf->height = sc->sc_height;
! 247: wdf->width = sc->sc_width;
! 248: wdf->depth = sc->sc_depth;
! 249: wdf->cmsize = 256;
! 250: break;
! 251:
! 252: case WSDISPLAYIO_LINEBYTES:
! 253: if (sc->sc_gfxmode == -1)
! 254: return (-1);
! 255: *(u_int *)addr = sc->sc_linebytes;
! 256: break;
! 257:
! 258: case WSDISPLAYIO_SVIDEO:
! 259: case WSDISPLAYIO_GVIDEO:
! 260: break;
! 261: case WSDISPLAYIO_GETCMAP:
! 262: if (sc->sc_depth == 8)
! 263: error = vesafb_getcmap(sc,
! 264: (struct wsdisplay_cmap *)addr);
! 265: break;
! 266:
! 267: case WSDISPLAYIO_PUTCMAP:
! 268: if (sc->sc_depth == 8)
! 269: error = vesafb_putcmap(sc,
! 270: (struct wsdisplay_cmap *)addr);
! 271: break;
! 272:
! 273: case WSDISPLAYIO_GETSUPPORTEDDEPTH:
! 274: *(int *)addr = vesafb_get_supported_depth(sc);
! 275: break;
! 276:
! 277: case WSDISPLAYIO_SETGFXMODE:
! 278: gfxmode = (struct wsdisplay_gfx_mode *)addr;
! 279: sc->sc_gfxmode = vesafb_find_mode(sc, gfxmode->width,
! 280: gfxmode->height, gfxmode->depth);
! 281: if (sc->sc_gfxmode == -1)
! 282: error = -1;
! 283: break;
! 284:
! 285: #endif
! 286: #ifdef PCIAGP
! 287: case AGPIOC_INFO:
! 288: case AGPIOC_ACQUIRE:
! 289: case AGPIOC_RELEASE:
! 290: case AGPIOC_SETUP:
! 291: case AGPIOC_ALLOCATE:
! 292: case AGPIOC_DEALLOCATE:
! 293: case AGPIOC_BIND:
! 294: case AGPIOC_UNBIND:
! 295: error = agp_ioctl(v, cmd, addr, flag, pb);
! 296: break;
! 297: #endif
! 298: default:
! 299: error = ENOTTY;
! 300: }
! 301:
! 302: return (error);
! 303: }
! 304:
! 305: #ifdef notyet
! 306: void
! 307: vga_pci_close(void *v)
! 308: {
! 309: #ifdef PCIAGP
! 310: agp_close(v);
! 311: #endif
! 312: }
! 313: #endif
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