diff options
Diffstat (limited to 'hw/xfree86/os-support/linux/lnx_font.c')
| -rw-r--r-- | hw/xfree86/os-support/linux/lnx_font.c | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/hw/xfree86/os-support/linux/lnx_font.c b/hw/xfree86/os-support/linux/lnx_font.c new file mode 100644 index 000000000..10ea433c5 --- /dev/null +++ b/hw/xfree86/os-support/linux/lnx_font.c @@ -0,0 +1,258 @@ +/* + * Copyright 2004, Egbert Eich + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * EGBERT EICH BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER + * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CON- + * NECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * Except as contained in this notice, the name of Egbert Eich shall not + * be used in advertising or otherwise to promote the sale, use or other deal- + *ings in this Software without prior written authorization from Egbert Eich. + * + */ +#include "X.h" +#include "Xmd.h" + +#include "compiler.h" + +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" +#include "lnx.h" + +#include <sys/stat.h> +#include <string.h> +#include <errno.h> + +struct { + int width; + int height; + int charcount; + unsigned char *data; +} lnxfont = { 0, 0, 0, NULL }; + + +static Bool +getfont(int *width, int *height, + int *charcount, unsigned char *data) +{ + struct console_font_op op; + struct consolefontdesc ds; + int result; + + op.op = KD_FONT_OP_GET; + op.width = *width; + op.height = *height; + op.charcount = *charcount; + op.data = data; + op.flags = 0; + + SYSCALL(result = ioctl(xf86Info.consoleFd, KDFONTOP, &op)); +#ifdef DEBUG + ErrorF("Console font read: h: %i count: %i\n",op.height,op.charcount); +#endif + + if (!result) { + + *width = op.width; + *height = op.height; + *charcount = op.charcount; + + return TRUE; + } + + if (errno != ENOSYS && errno != EINVAL) + return FALSE; + + /* GIO_FONTX fallback */ + ds.charcount = *charcount; + ds.charheight = *height; + ds.chardata = (char *)data; + *width = 8; + + SYSCALL(result = ioctl(xf86Info.consoleFd, GIO_FONTX, &ds)); + + if (!result) { + + *charcount = ds.charcount; + *height = ds.charheight; + + return TRUE; + } + + if (errno != ENOSYS && errno != EINVAL) + return FALSE; + + /* GIO_FONT fallback */ + if (*charcount < 256) + return FALSE; + + SYSCALL(result = ioctl(xf86Info.consoleFd, GIO_FONT, data)); + + if (!result) { + *height = 0; + *charcount = 512; + return TRUE; + } + + return FALSE; + +} + +Bool +lnx_savefont(void) +{ + unsigned char *fontdata; + int size; + int fd; + int width = 32, height = 32, charcount = 2048; + +#ifdef DEBUG + ErrorF("SAVE font\n"); +#endif + /* if we are in fbdev mode we don't bother saving fonts */ + if ((fd = open ("/dev/fb0",O_RDWR)) != -1) { + close (fd); + return TRUE; + } + + if (!getfont(&width, &height, &charcount, NULL)) { + xf86Msg(X_WARNING, + "lnx_savefont: cannot obtain font info\n"); + goto error; + } else if (charcount == 2048) { + xf86Msg(X_WARNING, "lnx_savefont: " + "kernel bug: kernel doesn't report font info\n"); + return FALSE; + } + + size = (width + 7)/8 * 32 * charcount; + fontdata = (unsigned char *)xnfalloc(size); + if (!fontdata) { + xf86Msg(X_WARNING, + "lnx_savefont: cannot allocate memory to save font\n"); + goto error; + } + + if (!getfont(&width, &height, &charcount, fontdata)) { + xf86Msg(X_WARNING,"lnx_savefont: cannot read font data\n"); + goto error; + } + lnxfont.width = width; + lnxfont.height = height; + lnxfont.charcount = charcount; + lnxfont.data = fontdata; + + return TRUE; + + error: + return FALSE; +} + +static Bool +setfont(int width, int height, + int charcount, unsigned char *data) +{ + struct console_font_op op; + struct consolefontdesc ds; + int result; + + op.op = KD_FONT_OP_SET; + op.flags = 0; + op.charcount = charcount; + op.width = width; + op.height = height; + op.data = data; + + SYSCALL(result = ioctl(xf86Info.consoleFd, KDFONTOP, &op)); + + if (!result) + return TRUE; + + if (errno != ENOSYS && errno != EINVAL) + return FALSE; + + /* PIO_FONTX fallback */ + if (width != 8) + return FALSE; + + ds.charcount = charcount; + ds.chardata = (char *)data; + ds.charheight = height; + SYSCALL(result = ioctl(xf86Info.consoleFd, PIO_FONTX, &ds)); + + if (!result) + return TRUE; + + if (errno != ENOSYS && errno != EINVAL) + return FALSE; + + /* PIO_FONT fallback */ + SYSCALL(result = ioctl(xf86Info.consoleFd, PIO_FONT, data)); + + if (!result) + return TRUE; + + return FALSE; +} + +Bool +lnx_restorefont(void) +{ + if (lnxfont.data == NULL) + return FALSE; +#ifdef DEBUG + ErrorF("RESTORE font\n"); +#endif +#if 0 + /* must wack the height to make the kernel reprogram the VGA registers */ + if (!setfont(lnxfont.width, lnxfont.height + 1, lnxfont.charcount, + lnxfont.data)) { + xf86Msg(X_WARNING,"lnx_fontretore: cannot write font data\n"); + return FALSE; + } +#endif + if (!setfont(lnxfont.width, lnxfont.height, lnxfont.charcount, + lnxfont.data)) { + xf86Msg(X_WARNING,"lnx_restorefont: cannot write font data\n"); + return FALSE; + } + + return TRUE; +} + +Bool +lnx_switchaway(void) +{ + Bool ret; + + /* temporarily switch to text mode */ + ioctl(xf86Info.consoleFd, KDSETMODE, KD_TEXT); + ret = lnx_restorefont(); + ioctl(xf86Info.consoleFd, KDSETMODE, KD_GRAPHICS); + return ret; +} + +void +lnx_freefontdata(void) +{ + if (lnxfont.data == NULL) + return; + + xfree(lnxfont.data); + lnxfont.data = NULL; + lnxfont.width = lnxfont.height = lnxfont.charcount = 0; +} |