/* $OpenBSD: vesafb.c,v 1.2 2006/12/02 20:20:55 matthieu Exp $ */ /*- * Copyright (c) 2006 Jared D. McNeill * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 2006 Matthieu Herrb * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include void vesafb_set_mode(struct vga_pci_softc *, int); int vesafb_get_mode(struct vga_pci_softc *); void vesafb_get_mode_info(struct vga_pci_softc *, int, struct modeinfoblock *); void vesafb_set_palette(struct vga_pci_softc *, int, struct paletteentry); int vesafb_putcmap(struct vga_pci_softc *, struct wsdisplay_cmap *); int vesafb_getcmap(struct vga_pci_softc *, struct wsdisplay_cmap *); int vesafb_get_mode(struct vga_pci_softc *sc) { struct trapframe tf; int res; bzero(&tf, sizeof(struct trapframe)); tf.tf_eax = 0x4f03; res = kvm86_bioscall(0x10, &tf); if (res || (tf.tf_eax & 0xff) != 0x4f) { printf("%s: vbecall: res=%d, ax=%x\n", sc->sc_dev.dv_xname, res, tf.tf_eax); } return tf.tf_ebx & 0xffff; } void vesafb_get_mode_info(struct vga_pci_softc *sc, int mode, struct modeinfoblock *mi) { struct trapframe tf; unsigned char *buf; int res; buf = kvm86_bios_addpage(0x2000); memset(&tf, 0, sizeof(struct trapframe)); tf.tf_eax = 0x4f01; /* function code */ tf.tf_ecx = mode; tf.tf_vm86_es = 0; tf.tf_edi = 0x2000; /* buf ptr */ res = kvm86_bioscall(0x10, &tf); if (res || (tf.tf_eax & 0xff) != 0x4f) { printf("%s: vbecall: res=%d, ax=%x\n", sc->sc_dev.dv_xname, res, tf.tf_eax); printf("%s: error getting info for mode %04x\n", sc->sc_dev.dv_xname, mode); return; } memcpy(mi, buf, sizeof(struct modeinfoblock)); kvm86_bios_delpage(0x2000, buf); } void vesafb_set_palette(struct vga_pci_softc *sc, int reg, struct paletteentry pe) { struct trapframe tf; int res; char *buf; buf = kvm86_bios_addpage(0x2000); /* * this function takes 8 bit per palette as input, but we're * working in 6 bit mode here */ pe.Red >>= 2; pe.Green >>= 2; pe.Blue >>= 2; memcpy(buf, &pe, sizeof(struct paletteentry)); /* set palette */ memset(&tf, 0, sizeof(struct trapframe)); tf.tf_eax = 0x4f09; /* function code */ tf.tf_ebx = 0x0600; /* 6 bit per primary, set format */ tf.tf_ecx = 1; tf.tf_edx = reg; tf.tf_vm86_es = 0; tf.tf_edi = 0x2000; res = kvm86_bioscall(0x10, &tf); if (res || (tf.tf_eax & 0xff) != 0x4f) printf("%s: vbecall: res=%d, ax=%x\n", sc->sc_dev.dv_xname, res, tf.tf_eax); kvm86_bios_delpage(0x2000, buf); return; } void vesafb_set_mode(struct vga_pci_softc *sc, int mode) { struct trapframe tf; int res; bzero(&tf, sizeof(struct trapframe)); tf.tf_eax = 0x4f02; tf.tf_ebx = mode | 0x4000; /* flat */ res = kvm86_bioscall(0x10, &tf); if (res || (tf.tf_eax & 0xff) != 0x4f) { printf("%s: vbecall: res=%d, ax=%x\n", sc->sc_dev.dv_xname, res, tf.tf_eax); return; } } int vesafb_find_mode(struct vga_pci_softc *sc, int width, int height, int bpp) { struct modeinfoblock mi; int i; if (vesabios_softc == NULL || vesabios_softc->sc_nmodes == 0) return -1; #ifdef VESABIOSVERBOSE printf("vesafb_find_mode %d %d %d\n", width, height, bpp); #endif /* Choose a graphics mode */ for (i = 0; i < vesabios_softc->sc_nmodes; i++) { vesafb_get_mode_info(sc, vesabios_softc->sc_modes[i], &mi); if (mi.XResolution == width && mi.YResolution == height && mi.BitsPerPixel == bpp) { sc->sc_width = mi.XResolution; sc->sc_height = mi.YResolution; sc->sc_depth = mi.BitsPerPixel; sc->sc_linebytes = mi.BytesPerScanLine; sc->sc_base = mi.PhysBasePtr; break; } } if (i == vesabios_softc->sc_nmodes) return -1; else return vesabios_softc->sc_modes[i]; } int vesafb_putcmap(struct vga_pci_softc *sc, struct wsdisplay_cmap *cm) { struct paletteentry pe; u_int idx, cnt; u_char r[256], g[256], b[256]; u_char *rp, *gp, *bp; int rv, i; idx = cm->index; cnt = cm->count; if (idx >= 255 || cnt > 256 || idx + cnt > 256) return EINVAL; rv = copyin(cm->red, &r[idx], cnt); if (rv) return rv; rv = copyin(cm->green, &g[idx], cnt); if (rv) return rv; rv = copyin(cm->blue, &b[idx], cnt); if (rv) return rv; memcpy(&sc->sc_cmap_red[idx], &r[idx], cnt); memcpy(&sc->sc_cmap_green[idx], &g[idx], cnt); memcpy(&sc->sc_cmap_blue[idx], &b[idx], cnt); rp = &sc->sc_cmap_red[idx]; gp = &sc->sc_cmap_green[idx]; bp = &sc->sc_cmap_blue[idx]; for (i = 0; i < cnt; i++) { pe.Blue = *bp; pe.Green = *gp; pe.Red = *rp; pe.Alignment = 0; vesafb_set_palette(sc, idx, pe); idx++; rp++, gp++, bp++; } return 0; } int vesafb_getcmap(struct vga_pci_softc *sc, struct wsdisplay_cmap *cm) { u_int idx, cnt; int rv; idx = cm->index; cnt = cm->count; if (idx >= 255 || cnt > 256 || idx + cnt > 256) return EINVAL; rv = copyout(&sc->sc_cmap_red[idx], cm->red, cnt); if (rv) return rv; rv = copyout(&sc->sc_cmap_green[idx], cm->green, cnt); if (rv) return rv; rv = copyout(&sc->sc_cmap_blue[idx], cm->blue, cnt); if (rv) return rv; return 0; } static int vesafb_getdepthflag(struct modeinfoblock *mi) { int bpp, depth; depth = mi->RedMaskSize + mi->GreenMaskSize + mi->BlueMaskSize; bpp = mi->BitsPerPixel; switch (depth) { case 1: return WSDISPLAYIO_DEPTH_1; case 4: return WSDISPLAYIO_DEPTH_4; case 8: return WSDISPLAYIO_DEPTH_8; case 15: return WSDISPLAYIO_DEPTH_15; case 16: return WSDISPLAYIO_DEPTH_16; case 24: switch (bpp) { case 24: return WSDISPLAYIO_DEPTH_24_24; case 32: return WSDISPLAYIO_DEPTH_24_32; } } return 0; } int vesafb_get_supported_depth(struct vga_pci_softc *sc) { int i, depths; struct modeinfoblock mi; depths = 0; if (vesabios_softc == NULL || vesabios_softc->sc_nmodes == 0) return 0; for (i = 0; i < vesabios_softc->sc_nmodes; i++) { vesafb_get_mode_info(sc, vesabios_softc->sc_modes[i], &mi); depths |= vesafb_getdepthflag(&mi); } return depths; }