/*- * Copyright (c) 1999 Kazutaka YOKOTA * Copyright (c) 1992-1998 Søren Schmidt * 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 as * the first lines of this file unmodified. * 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. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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. * * $Id: vga_isa.c,v 1.4 1999/02/05 12:58:40 yokota Exp $ */ #include "vga.h" #include "opt_vga.h" #include "opt_fb.h" #include "opt_syscons.h" /* should be removed in the future, XXX */ #if NVGA > 0 #include #include #include #include #include #include #include #include #include #include #include #include #ifndef __i386__ #include #include #else #include #include #endif #define DRIVER_NAME "vga" /* cdev driver declaration */ #define ISAVGA_UNIT(dev) minor(dev) #define ISAVGA_MKMINOR(unit) (unit) typedef struct isavga_softc { video_adapter_t *adp; } isavga_softc_t; #ifndef __i386__ #define ISAVGA_SOFTC(unit) \ ((isavga_softc_t *)devclass_get_softc(isavga_devclass, unit)) devclass_t isavga_devclass; static int isavga_probe(device_t dev); static int isavga_attach(device_t dev); static device_method_t isavga_methods[] = { DEVMETHOD(device_probe, isavga_probe), DEVMETHOD(device_attach, isavga_attach), { 0, 0 } }; static driver_t isavga_driver = { DRIVER_NAME, isavga_methods, DRIVER_TYPE_TTY, sizeof(isavga_softc_t), }; #else /* __i386__ */ #define ISAVGA_SOFTC(unit) (isavga_softc[unit]) static isavga_softc_t *isavga_softc[NVGA]; static int isavga_probe(struct isa_device *dev); static int isavga_attach(struct isa_device *dev); struct isa_driver vgadriver = { isavga_probe, isavga_attach, DRIVER_NAME, 0, }; #endif /* __i386__ */ static int isavga_probe_unit(int unit, isavga_softc_t *sc, int flags); static int isavga_attach_unit(int unit, isavga_softc_t *sc, int flags); #ifdef FB_INSTALL_CDEV static d_open_t isavgaopen; static d_close_t isavgaclose; static d_read_t isavgaread; static d_ioctl_t isavgaioctl; static struct cdevsw vga_cdevsw = { isavgaopen, isavgaclose, noread, nowrite, /* ?? */ isavgaioctl, nostop, nullreset, nodevtotty, seltrue, nommap, NULL, DRIVER_NAME, NULL, -1, nodump, nopsize, }; #endif /* FB_INSTALL_CDEV */ #ifndef __i386__ static int isavga_probe(device_t dev) { isavga_softc_t *sc; sc = device_get_softc(dev); return isavga_probe_unit(device_get_unit(dev), sc, isa_get_flags(dev)); } static int isavga_attach(device_t dev) { isavga_softc_t *sc; sc = device_get_softc(dev); return isavga_attach_unit(device_get_unit(dev), sc, isa_get_flags(dev)); } #else /* __i386__ */ static int isavga_probe(struct isa_device *dev) { isavga_softc_t *sc; int error; if (dev->id_unit >= sizeof(isavga_softc)/sizeof(isavga_softc[0])) return 0; sc = isavga_softc[dev->id_unit] = malloc(sizeof(*sc), M_DEVBUF, M_NOWAIT); if (sc == NULL) return 0; error = isavga_probe_unit(dev->id_unit, sc, dev->id_flags); if (error) { isavga_softc[dev->id_unit] = NULL; free(sc, M_DEVBUF); return 0; } dev->id_iobase = sc->adp->va_io_base; dev->id_maddr = (caddr_t)BIOS_PADDRTOVADDR(sc->adp->va_mem_base); dev->id_msize = sc->adp->va_mem_size; return sc->adp->va_io_size; } static int isavga_attach(struct isa_device *dev) { isavga_softc_t *sc; if (dev->id_unit >= sizeof(isavga_softc)/sizeof(isavga_softc[0])) return 0; sc = isavga_softc[dev->id_unit]; if (sc == NULL) return 0; return ((isavga_attach_unit(dev->id_unit, sc, dev->id_flags)) ? 0 : 1); } #endif /* __i386__ */ static int isavga_probe_unit(int unit, isavga_softc_t *sc, int flags) { video_switch_t *sw; bzero(sc, sizeof(*sc)); sw = vid_get_switch(DRIVER_NAME); if (sw == NULL) return 0; return (*sw->probe)(unit, &sc->adp, NULL, flags); } static int isavga_attach_unit(int unit, isavga_softc_t *sc, int flags) { video_switch_t *sw; int error; sw = vid_get_switch(DRIVER_NAME); if (sw == NULL) return ENXIO; error = (*sw->init)(unit, sc->adp, flags); if (error) return ENXIO; #ifdef FB_INSTALL_CDEV /* attach a virtual frame buffer device */ error = fb_attach(makedev(0, ISAVGA_MKMINOR(unit)), scp->adp, &vga_cdevsw); if (error) return error; #endif /* FB_INSTALL_CDEV */ if (bootverbose) (*vidsw[sc->adp->va_index]->diag)(sc->adp, bootverbose); return 0; } /* LOW-LEVEL */ #include #include #define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED) #define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED) #define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED) /* for compatibility with old kernel options */ #ifdef SC_ALT_SEQACCESS #undef SC_ALT_SEQACCESS #undef VGA_ALT_SEQACCESS #define VGA_ALT_SEQACCESS 1 #endif #ifdef SLOW_VGA #undef SLOW_VGA #undef VGA_SLOW_IOACCESS #define VGA_SLOW_IOACCESS 1 #endif /* architecture dependent option */ #ifdef __alpha__ #define VGA_NO_BIOS 1 #endif /* this should really be in `rtc.h' */ #define RTC_EQUIPMENT 0x14 /* various sizes */ #define V_MODE_MAP_SIZE (M_VGA_CG320 + 1) #define V_MODE_PARAM_SIZE 64 /* video adapter state buffer */ struct adp_state { int sig; #define V_STATE_SIG 0x736f6962 u_char regs[V_MODE_PARAM_SIZE]; }; typedef struct adp_state adp_state_t; /* video adapter information */ #define DCC_MONO 0 #define DCC_CGA40 1 #define DCC_CGA80 2 #define DCC_EGAMONO 3 #define DCC_EGA40 4 #define DCC_EGA80 5 /* * NOTE: `va_window' should have a virtual address, but is initialized * with a physical address in the following table, as verify_adapter() * will perform address conversion at run-time. */ static video_adapter_t adapter_init_value[] = { /* DCC_MONO */ { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, 0, 7, 0, }, /* DCC_CGA40 */ { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, 0, 3, 0, }, /* DCC_CGA80 */ { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, 0, 3, 0, }, /* DCC_EGAMONO */ { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC, EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, 0, 7, 0, }, /* DCC_EGA40 */ { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, 0, 3, 0, }, /* DCC_EGA80 */ { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC, EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, 0, 3, 0, }, }; static video_adapter_t biosadapter[2]; static int biosadapters = 0; /* video driver declarations */ static int vga_configure(int flags); int (*vga_sub_configure)(int flags); static int vga_nop(void); static vi_probe_t vga_probe; static vi_init_t vga_init; static vi_get_info_t vga_get_info; static vi_query_mode_t vga_query_mode; static vi_set_mode_t vga_set_mode; static vi_save_font_t vga_save_font; static vi_load_font_t vga_load_font; static vi_show_font_t vga_show_font; static vi_save_palette_t vga_save_palette; static vi_load_palette_t vga_load_palette; static vi_set_border_t vga_set_border; static vi_save_state_t vga_save_state; static vi_load_state_t vga_load_state; static vi_set_win_org_t vga_set_origin; static vi_read_hw_cursor_t vga_read_hw_cursor; static vi_set_hw_cursor_t vga_set_hw_cursor; static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape; static vi_mmap_t vga_mmap; static vi_diag_t vga_diag; static video_switch_t vgavidsw = { vga_probe, vga_init, vga_get_info, vga_query_mode, vga_set_mode, vga_save_font, vga_load_font, vga_show_font, vga_save_palette, vga_load_palette, vga_set_border, vga_save_state, vga_load_state, vga_set_origin, vga_read_hw_cursor, vga_set_hw_cursor, vga_set_hw_cursor_shape, (vi_blank_display_t *)vga_nop, vga_mmap, vga_diag, }; VIDEO_DRIVER(mda, vgavidsw, NULL); VIDEO_DRIVER(cga, vgavidsw, NULL); VIDEO_DRIVER(ega, vgavidsw, NULL); VIDEO_DRIVER(vga, vgavidsw, vga_configure); /* VGA BIOS standard video modes */ #define EOT (-1) #define NA (-2) static video_info_t bios_vmode[] = { /* CGA */ { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, /* EGA */ { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, /* VGA */ { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, /* MDA */ { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, /* EGA */ { M_ENH_B80x43, V_INFO_COLOR, 80, 43, 8, 8, 2, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, /* VGA */ { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0 }, { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, #ifndef VGA_NO_MODE_CHANGE /* CGA */ { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0 }, /* EGA */ { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4, GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4, GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 }, { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2, GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, /* VGA */ { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1, GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 1, GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 }, #endif /* VGA_NO_MODE_CHANGE */ { EOT }, }; static int init_done = FALSE; #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) static u_char *video_mode_ptr = NULL; /* EGA/VGA */ static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */ #endif static u_char *mode_map[V_MODE_MAP_SIZE]; static adp_state_t adpstate; static adp_state_t adpstate2; static int rows_offset = 1; /* local macros and functions */ #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff)) #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) static void map_mode_table(u_char *map[], u_char *table, int max); #endif static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color); #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) static int map_mode_num(int mode); #endif static int map_gen_mode_num(int type, int color, int mode); static int map_bios_mode_num(int type, int color, int bios_mode); static u_char *get_mode_param(int mode); #ifndef VGA_NO_BIOS static void fill_adapter_param(int code, video_adapter_t *adp); #endif static int verify_adapter(video_adapter_t *adp); static void update_adapter_info(video_adapter_t *adp, video_info_t *info); #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) #define COMP_IDENTICAL 0 #define COMP_SIMILAR 1 #define COMP_DIFFERENT 2 static int comp_adpregs(u_char *buf1, u_char *buf2); #endif static int probe_adapters(void); #ifndef VGA_NO_FONT_LOADING #define PARAM_BUFSIZE 6 static void set_font_mode(video_adapter_t *adp, u_char *buf); static void set_normal_mode(video_adapter_t *adp, u_char *buf); #endif static void dump_buffer(u_char *buf, size_t len); #define ISMAPPED(pa, width) \ (((pa) <= (u_long)0x1000 - (width)) \ || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width))) #define prologue(adp, flag, err) \ if (!init_done || !((adp)->va_flags & (flag))) \ return (err) /* a backdoor for the console driver */ static int vga_configure(int flags) { int i; probe_adapters(); for (i = 0; i < biosadapters; ++i) { if (!probe_done(&biosadapter[i])) continue; biosadapter[i].va_flags |= V_ADP_INITIALIZED; if (!config_done(&biosadapter[i])) { if (vid_register(&biosadapter[i]) < 0) continue; biosadapter[i].va_flags |= V_ADP_REGISTERED; } } if (vga_sub_configure != NULL) (*vga_sub_configure)(flags); return biosadapters; } /* local subroutines */ #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) /* construct the mode parameter map */ static void map_mode_table(u_char *map[], u_char *table, int max) { int i; for(i = 0; i < max; ++i) map[i] = table + i*V_MODE_PARAM_SIZE; for(; i < V_MODE_MAP_SIZE; ++i) map[i] = NULL; } #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color) { video_info_t info; int i; /* * NOTE: we don't touch `bios_vmode[]' because it is shared * by all adapters. */ for(i = 0; i < max; ++i) { if (vga_get_info(adp, i, &info)) continue; if ((info.vi_flags & V_INFO_COLOR) != color) map[i] = NULL; } } #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) /* map the non-standard video mode to a known mode number */ static int map_mode_num(int mode) { static struct { int from; int to; } mode_map[] = { { M_ENH_B80x43, M_ENH_B80x25 }, { M_ENH_C80x43, M_ENH_C80x25 }, { M_VGA_M80x30, M_VGA_M80x25 }, { M_VGA_C80x30, M_VGA_C80x25 }, { M_VGA_M80x50, M_VGA_M80x25 }, { M_VGA_C80x50, M_VGA_C80x25 }, { M_VGA_M80x60, M_VGA_M80x25 }, { M_VGA_C80x60, M_VGA_C80x25 }, { M_VGA_MODEX, M_VGA_CG320 }, }; int i; for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { if (mode_map[i].from == mode) return mode_map[i].to; } return mode; } #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ /* map a generic video mode to a known mode number */ static int map_gen_mode_num(int type, int color, int mode) { static struct { int from; int to_color; int to_mono; } mode_map[] = { { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, }, { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, }, { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, }, { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, }, }; int i; if (mode == M_TEXT_80x25) { switch (type) { case KD_VGA: if (color) return M_VGA_C80x25; else return M_VGA_M80x25; break; case KD_EGA: if (color) return M_ENH_C80x25; else return M_EGAMONO80x25; break; case KD_CGA: return M_C80x25; case KD_MONO: case KD_HERCULES: return M_EGAMONO80x25; /* XXX: this name is confusing */ default: return -1; } } for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) { if (mode_map[i].from == mode) return ((color) ? mode_map[i].to_color : mode_map[i].to_mono); } return mode; } /* turn the BIOS video number into our video mode number */ static int map_bios_mode_num(int type, int color, int bios_mode) { static int cga_modes[7] = { M_B40x25, M_C40x25, /* 0, 1 */ M_B80x25, M_C80x25, /* 2, 3 */ M_BG320, M_CG320, M_BG640, }; static int ega_modes[17] = { M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */ M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */ M_BG320, M_CG320, M_BG640, M_EGAMONO80x25, /* 7 */ 8, 9, 10, 11, 12, M_CG320_D, M_CG640_E, M_ENHMONOAPA2, /* XXX: video momery > 64K */ M_ENH_CG640, /* XXX: video momery > 64K */ }; static int vga_modes[20] = { M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */ M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */ M_BG320, M_CG320, M_BG640, M_VGA_M80x25, /* 7 */ 8, 9, 10, 11, 12, M_CG320_D, M_CG640_E, M_ENHMONOAPA2, M_ENH_CG640, M_BG640x480, M_CG640x480, M_VGA_CG320, }; switch (type) { case KD_VGA: if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0])) return vga_modes[bios_mode]; else if (color) return M_VGA_C80x25; else return M_VGA_M80x25; break; case KD_EGA: if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0])) return ega_modes[bios_mode]; else if (color) return M_ENH_C80x25; else return M_EGAMONO80x25; break; case KD_CGA: if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0])) return cga_modes[bios_mode]; else return M_C80x25; break; case KD_MONO: case KD_HERCULES: return M_EGAMONO80x25; /* XXX: this name is confusing */ default: break; } return -1; } /* look up a parameter table entry */ static u_char *get_mode_param(int mode) { #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) if (mode >= V_MODE_MAP_SIZE) mode = map_mode_num(mode); #endif if ((mode >= 0) && (mode < V_MODE_MAP_SIZE)) return mode_map[mode]; else return NULL; } #ifndef VGA_NO_BIOS static void fill_adapter_param(int code, video_adapter_t *adp) { static struct { int primary; int secondary; } dcc[] = { { DCC_MONO, DCC_EGA40 /* CGA monitor */ }, { DCC_MONO, DCC_EGA80 /* CGA monitor */ }, { DCC_MONO, DCC_EGA80 /* CGA emulation */ }, { DCC_MONO, DCC_EGA80 }, { DCC_CGA40, DCC_EGAMONO }, { DCC_CGA80, DCC_EGAMONO }, { DCC_EGA40 /* CGA monitor */, DCC_MONO}, { DCC_EGA80 /* CGA monitor */, DCC_MONO}, { DCC_EGA80 /* CGA emulation */,DCC_MONO }, { DCC_EGA80, DCC_MONO }, { DCC_EGAMONO, DCC_CGA40 }, { DCC_EGAMONO, DCC_CGA40 }, }; if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) { adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; } else { adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary]; adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary]; } } #endif /* VGA_NO_BIOS */ static int verify_adapter(video_adapter_t *adp) { volatile u_int16_t *buf; u_int16_t v; u_int32_t p; buf = (u_int16_t *)BIOS_PADDRTOVADDR(adp->va_window); v = readw(buf); writew(buf, 0xA55A); if (readw(buf) != 0xA55A) return 1; writew(buf, v); switch (adp->va_type) { case KD_EGA: outb(adp->va_crtc_addr, 7); if (inb(adp->va_crtc_addr) == 7) { adp->va_type = KD_VGA; adp->va_name = "vga"; adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE; } adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER; /* the color adapter may be in the 40x25 mode... XXX */ #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) /* get the BIOS video mode pointer */ p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8); p = BIOS_SADDRTOLADDR(p); if (ISMAPPED(p, sizeof(u_int32_t))) { p = *(u_int32_t *)BIOS_PADDRTOVADDR(p); p = BIOS_SADDRTOLADDR(p); if (ISMAPPED(p, V_MODE_PARAM_SIZE)) video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p); } #endif break; case KD_CGA: adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER; /* may be in the 40x25 mode... XXX */ #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) /* get the BIOS video mode pointer */ p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); p = BIOS_SADDRTOLADDR(p); video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); #endif break; case KD_MONO: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) /* get the BIOS video mode pointer */ p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4); p = BIOS_SADDRTOLADDR(p); video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p); #endif break; } return 0; } static void update_adapter_info(video_adapter_t *adp, video_info_t *info) { adp->va_flags &= ~V_ADP_COLOR; adp->va_flags |= (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; adp->va_crtc_addr = (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC; adp->va_window = BIOS_PADDRTOVADDR(info->vi_window); adp->va_window_size = info->vi_window_size; adp->va_window_gran = info->vi_window_gran; if (info->vi_buffer_size == 0) { adp->va_buffer = 0; adp->va_buffer_size = 0; } else { adp->va_buffer = BIOS_PADDRTOVADDR(info->vi_buffer); adp->va_buffer_size = info->vi_buffer_size; } if (info->vi_flags & V_INFO_GRAPHICS) { switch (info->vi_depth/info->vi_planes) { case 1: adp->va_line_width = info->vi_width/8; break; case 2: adp->va_line_width = info->vi_width/4; break; case 4: adp->va_line_width = info->vi_width/2; break; case 8: default: /* shouldn't happen */ adp->va_line_width = info->vi_width; break; } } else { adp->va_line_width = info->vi_width; } bcopy(info, &adp->va_info, sizeof(adp->va_info)); } #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) /* compare two parameter table entries */ static int comp_adpregs(u_char *buf1, u_char *buf2) { static struct { u_char mask; } params[V_MODE_PARAM_SIZE] = { 0xff, 0x00, 0xff, /* COLS, ROWS, POINTS */ 0x00, 0x00, /* page length */ 0xfe, 0xff, 0xff, 0xff, /* sequencer registers */ 0xf3, /* misc register */ 0xff, 0xff, 0xff, 0x7f, 0xff, /* CRTC */ 0xff, 0xff, 0xff, 0x7f, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x7f, 0xff, 0xff, 0x7f, 0xff, 0xff, 0xef, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* attribute controller registers */ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, /* GDC register */ 0xff, 0xff, 0xff, 0xff, }; int identical = TRUE; int i; if ((buf1 == NULL) || (buf2 == NULL)) return COMP_DIFFERENT; for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) { if (params[i].mask == 0) /* don't care */ continue; if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask)) return COMP_DIFFERENT; if (buf1[i] != buf2[i]) identical = FALSE; } return (identical) ? COMP_IDENTICAL : COMP_SIMILAR; } #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */ /* probe video adapters and return the number of detected adapters */ static int probe_adapters(void) { video_adapter_t *adp; video_info_t info; u_char *mp; int i; /* do this test only once */ if (init_done) return biosadapters; init_done = TRUE; /* * Locate display adapters. * The AT architecture supports upto two adapters. `syscons' allows * the following combinations of adapters: * 1) MDA + CGA * 2) MDA + EGA/VGA color * 3) CGA + EGA/VGA mono * Note that `syscons' doesn't bother with MCGA as it is only * avaiable for low end PS/2 models which has 80286 or earlier CPUs, * thus, they are not running FreeBSD! * When there are two adapaters in the system, one becomes `primary' * and the other `secondary'. The EGA adapter has a set of DIP * switches on board for this information and the EGA BIOS copies * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). * The VGA BIOS has more sophisticated mechanism and has this * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH. */ /* * Check rtc and BIOS data area. * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are * zeros for EGA and VGA. However, the EGA/VGA BIOS sets * these bits in BIOSDATA_EQUIPMENT according to the monitor * type detected. */ #ifndef VGA_NO_BIOS switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ case 0: /* EGA/VGA */ fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, biosadapter); break; case 1: /* CGA 40x25 */ /* FIXME: switch to the 80x25 mode? XXX */ biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; break; case 2: /* CGA 80x25 */ biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; break; case 3: /* MDA */ biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; break; } #else /* assume EGA/VGA? XXX */ biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80]; biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; #endif /* VGA_NO_BIOS */ biosadapters = 0; if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) { ++biosadapters; biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED; biosadapter[V_ADP_SECONDARY].va_mode = biosadapter[V_ADP_SECONDARY].va_initial_mode = map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, biosadapter[V_ADP_SECONDARY].va_flags & V_ADP_COLOR, biosadapter[V_ADP_SECONDARY].va_initial_bios_mode); } else { biosadapter[V_ADP_SECONDARY].va_type = -1; } if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) { ++biosadapters; biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED; #ifndef VGA_NO_BIOS biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = readb(BIOS_PADDRTOVADDR(0x449)); #else biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */ #endif biosadapter[V_ADP_PRIMARY].va_mode = biosadapter[V_ADP_PRIMARY].va_initial_mode = map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, biosadapter[V_ADP_PRIMARY].va_initial_bios_mode); } else { biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY]; biosadapter[V_ADP_SECONDARY].va_type = -1; } if (biosadapters == 0) return biosadapters; biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY; biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY; #if 0 /* we don't need these... */ fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...); fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...); #endif #if 0 /* * We cannot have two video adapter of the same type; there must be * only one of color or mono adapter, or one each of them. */ if (biosadapters > 1) { if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags) & V_ADP_COLOR)) /* we have two mono or color adapters!! */ return (biosadapters = 0); } #endif /* * Ensure a zero start address. This is mainly to recover after * switching from pcvt using userconfig(). The registers are w/o * for old hardware so it's too hard to relocate the active screen * memory. * This must be done before vga_save_state() for VGA. */ outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12); outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13); outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); /* the video mode parameter table in EGA/VGA BIOS */ /* NOTE: there can be only one EGA/VGA, wheather color or mono, * recognized by the video BIOS. */ if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) || (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) { adp = &biosadapter[V_ADP_PRIMARY]; } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) || (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) { adp = &biosadapter[V_ADP_SECONDARY]; } else { adp = NULL; } bzero(mode_map, sizeof(mode_map)); if (adp != NULL) { if (adp->va_type == KD_VGA) { vga_save_state(adp, &adpstate, sizeof(adpstate)); #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) mode_map[adp->va_initial_mode] = adpstate.regs; rows_offset = 1; #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ if (video_mode_ptr == NULL) { mode_map[adp->va_initial_mode] = adpstate.regs; rows_offset = 1; } else { /* discard the table if we are not familiar with it... */ map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1); mp = get_mode_param(adp->va_initial_mode); if (mp != NULL) bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs)); switch (comp_adpregs(adpstate.regs, mp)) { case COMP_IDENTICAL: /* * OK, this parameter table looks reasonably familiar * to us... */ /* * This is a kludge for Toshiba DynaBook SS433 * whose BIOS video mode table entry has the actual # * of rows at the offset 1; BIOSes from other * manufacturers store the # of rows - 1 there. XXX */ rows_offset = adpstate.regs[1] + 1 - mp[1]; break; case COMP_SIMILAR: /* * Not exactly the same, but similar enough to be * trusted. However, use the saved register values * for the initial mode and other modes which are * based on the initial mode. */ mode_map[adp->va_initial_mode] = adpstate.regs; rows_offset = adpstate.regs[1] + 1 - mp[1]; adpstate.regs[1] -= rows_offset - 1; break; case COMP_DIFFERENT: default: /* * Don't use the paramter table in BIOS. It doesn't * look familiar to us. Video mode switching is allowed * only if the new mode is the same as or based on * the initial mode. */ video_mode_ptr = NULL; bzero(mode_map, sizeof(mode_map)); mode_map[adp->va_initial_mode] = adpstate.regs; rows_offset = 1; break; } } #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ #ifndef VGA_NO_MODE_CHANGE adp->va_flags |= V_ADP_MODECHANGE; #endif #ifndef VGA_NO_FONT_LOADING adp->va_flags |= V_ADP_FONT; #endif } else if (adp->va_type == KD_EGA) { #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE) rows_offset = 1; #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ if (video_mode_ptr == NULL) { rows_offset = 1; } else { map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1); /* XXX how can one validate the EGA table... */ mp = get_mode_param(adp->va_initial_mode); if (mp != NULL) { adp->va_flags |= V_ADP_MODECHANGE; #ifndef VGA_NO_FONT_LOADING adp->va_flags |= V_ADP_FONT; #endif rows_offset = 1; } else { /* * This is serious. We will not be able to switch video * modes at all... */ video_mode_ptr = NULL; bzero(mode_map, sizeof(mode_map)); rows_offset = 1; } } #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */ } } /* remove conflicting modes if we have more than one adapter */ if (biosadapters > 1) { for (i = 0; i < biosadapters; ++i) { if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE)) continue; clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1, (biosadapter[i].va_flags & V_ADP_COLOR) ? V_INFO_COLOR : 0); if ((biosadapter[i].va_type == KD_VGA) || (biosadapter[i].va_type == KD_EGA)) { biosadapter[i].va_io_base = (biosadapter[i].va_flags & V_ADP_COLOR) ? IO_VGA : IO_MDA; biosadapter[i].va_io_size = 32; } } } /* buffer address */ vga_get_info(&biosadapter[V_ADP_PRIMARY], biosadapter[V_ADP_PRIMARY].va_initial_mode, &info); update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info); if (biosadapters > 1) { vga_get_info(&biosadapter[V_ADP_SECONDARY], biosadapter[V_ADP_SECONDARY].va_initial_mode, &info); update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info); } /* * XXX: we should verify the following values for the primary adapter... * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463); * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) * ? 0 : V_ADP_COLOR; * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c); */ return biosadapters; } /* entry points */ static int vga_nop(void) { return 0; } static int vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags) { probe_adapters(); if (unit >= biosadapters) return ENXIO; *adpp = &biosadapter[unit]; return 0; } static int vga_init(int unit, video_adapter_t *adp, int flags) { if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp)) return ENXIO; if (!init_done(adp)) { /* nothing to do really... */ adp->va_flags |= V_ADP_INITIALIZED; } if (!config_done(adp)) { if (vid_register(adp) < 0) return ENXIO; adp->va_flags |= V_ADP_REGISTERED; } if (vga_sub_configure != NULL) (*vga_sub_configure)(0); return 0; } /* * get_info(): * Return the video_info structure of the requested video mode. * * all adapters */ static int vga_get_info(video_adapter_t *adp, int mode, video_info_t *info) { int i; if (!init_done) return 1; mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); #ifndef VGA_NO_MODE_CHANGE if (adp->va_flags & V_ADP_MODECHANGE) { /* * If the parameter table entry for this mode is not found, * the mode is not supported... */ if (get_mode_param(mode) == NULL) return 1; } else #endif /* VGA_NO_MODE_CHANGE */ { /* * Even if we don't support video mode switching on this adapter, * the information on the initial (thus current) video mode * should be made available. */ if (mode != adp->va_initial_mode) return 1; } for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { if (bios_vmode[i].vi_mode == NA) continue; if (mode == bios_vmode[i].vi_mode) { *info = bios_vmode[i]; return 0; } } return 1; } /* * query_mode(): * Find a video mode matching the requested parameters. * Fields filled with 0 are considered "don't care" fields and * match any modes. * * all adapters */ static int vga_query_mode(video_adapter_t *adp, video_info_t *info) { video_info_t buf; int i; if (!init_done) return -1; for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { if (bios_vmode[i].vi_mode == NA) continue; if ((info->vi_width != 0) && (info->vi_width != bios_vmode[i].vi_width)) continue; if ((info->vi_height != 0) && (info->vi_height != bios_vmode[i].vi_height)) continue; if ((info->vi_cwidth != 0) && (info->vi_cwidth != bios_vmode[i].vi_cwidth)) continue; if ((info->vi_cheight != 0) && (info->vi_cheight != bios_vmode[i].vi_cheight)) continue; if ((info->vi_depth != 0) && (info->vi_depth != bios_vmode[i].vi_depth)) continue; if ((info->vi_planes != 0) && (info->vi_planes != bios_vmode[i].vi_planes)) continue; /* XXX: should check pixel format, memory model */ if ((info->vi_flags != 0) && (info->vi_flags != bios_vmode[i].vi_flags)) continue; /* verify if this mode is supported on this adapter */ if (vga_get_info(adp, bios_vmode[i].vi_mode, &buf)) continue; return bios_vmode[i].vi_mode; } return -1; } /* * set_mode(): * Change the video mode. * * EGA/VGA */ static int vga_set_mode(video_adapter_t *adp, int mode) { #ifndef VGA_NO_MODE_CHANGE video_info_t info; adp_state_t params; prologue(adp, V_ADP_MODECHANGE, 1); mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode); if (vga_get_info(adp, mode, &info)) return 1; params.sig = V_STATE_SIG; bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); switch (mode) { case M_VGA_C80x60: case M_VGA_M80x60: params.regs[2] = 0x08; params.regs[19] = 0x47; goto special_480l; case M_VGA_C80x30: case M_VGA_M80x30: params.regs[19] = 0x4f; special_480l: params.regs[9] |= 0xc0; params.regs[16] = 0x08; params.regs[17] = 0x3e; params.regs[26] = 0xea; params.regs[28] = 0xdf; params.regs[31] = 0xe7; params.regs[32] = 0x04; goto setup_mode; case M_ENH_C80x43: case M_ENH_B80x43: params.regs[28] = 87; goto special_80x50; case M_VGA_C80x50: case M_VGA_M80x50: special_80x50: params.regs[2] = 8; params.regs[19] = 7; goto setup_mode; case M_VGA_C40x25: case M_VGA_C80x25: case M_VGA_M80x25: case M_B40x25: case M_C40x25: case M_B80x25: case M_C80x25: case M_ENH_B40x25: case M_ENH_C40x25: case M_ENH_B80x25: case M_ENH_C80x25: case M_EGAMONO80x25: setup_mode: vga_load_state(adp, ¶ms); break; case M_VGA_MODEX: /* "unchain" the VGA mode */ params.regs[5-1+0x04] &= 0xf7; params.regs[5-1+0x04] |= 0x04; /* turn off doubleword mode */ params.regs[10+0x14] &= 0xbf; /* turn off word adressing */ params.regs[10+0x17] |= 0x40; /* set logical screen width */ params.regs[10+0x13] = 80; /* set 240 lines */ params.regs[10+0x11] = 0x2c; params.regs[10+0x06] = 0x0d; params.regs[10+0x07] = 0x3e; params.regs[10+0x10] = 0xea; params.regs[10+0x11] = 0xac; params.regs[10+0x12] = 0xdf; params.regs[10+0x15] = 0xe7; params.regs[10+0x16] = 0x06; /* set vertical sync polarity to reflect aspect ratio */ params.regs[9] = 0xe3; goto setup_grmode; case M_BG320: case M_CG320: case M_BG640: case M_CG320_D: case M_CG640_E: case M_CG640x350: case M_ENH_CG640: case M_BG640x480: case M_CG640x480: case M_VGA_CG320: setup_grmode: vga_load_state(adp, ¶ms); break; default: return 1; } adp->va_mode = mode; update_adapter_info(adp, &info); /* move hardware cursor out of the way */ (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1); return 0; #else /* VGA_NO_MODE_CHANGE */ return 1; #endif /* VGA_NO_MODE_CHANGE */ } #ifndef VGA_NO_FONT_LOADING static void set_font_mode(video_adapter_t *adp, u_char *buf) { u_char *mp; int s; s = splhigh(); /* save register values */ if (adp->va_type == KD_VGA) { outb(TSIDX, 0x02); buf[0] = inb(TSREG); outb(TSIDX, 0x04); buf[1] = inb(TSREG); outb(GDCIDX, 0x04); buf[2] = inb(GDCREG); outb(GDCIDX, 0x05); buf[3] = inb(GDCREG); outb(GDCIDX, 0x06); buf[4] = inb(GDCREG); inb(adp->va_crtc_addr + 6); outb(ATC, 0x10); buf[5] = inb(ATC + 1); } else /* if (adp->va_type == KD_EGA) */ { /* * EGA cannot be read; copy parameters from the mode parameter * table. */ mp = get_mode_param(adp->va_mode); buf[0] = mp[5 + 0x02 - 1]; buf[1] = mp[5 + 0x04 - 1]; buf[2] = mp[55 + 0x04]; buf[3] = mp[55 + 0x05]; buf[4] = mp[55 + 0x06]; buf[5] = mp[35 + 0x10]; } /* setup vga for loading fonts */ inb(adp->va_crtc_addr + 6); /* reset flip-flop */ outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01); inb(adp->va_crtc_addr + 6); /* reset flip-flop */ outb(ATC, 0x20); /* enable palette */ #if VGA_SLOW_IOACCESS #ifdef VGA_ALT_SEQACCESS outb(TSIDX, 0x00); outb(TSREG, 0x01); #endif outb(TSIDX, 0x02); outb(TSREG, 0x04); outb(TSIDX, 0x04); outb(TSREG, 0x07); #ifdef VGA_ALT_SEQACCESS outb(TSIDX, 0x00); outb(TSREG, 0x03); #endif outb(GDCIDX, 0x04); outb(GDCREG, 0x02); outb(GDCIDX, 0x05); outb(GDCREG, 0x00); outb(GDCIDX, 0x06); outb(GDCREG, 0x04); #else /* VGA_SLOW_IOACCESS */ #ifdef VGA_ALT_SEQACCESS outw(TSIDX, 0x0100); #endif outw(TSIDX, 0x0402); outw(TSIDX, 0x0704); #ifdef VGA_ALT_SEQACCESS outw(TSIDX, 0x0300); #endif outw(GDCIDX, 0x0204); outw(GDCIDX, 0x0005); outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ #endif /* VGA_SLOW_IOACCESS */ splx(s); } static void set_normal_mode(video_adapter_t *adp, u_char *buf) { int s; s = splhigh(); /* setup vga for normal operation mode again */ inb(adp->va_crtc_addr + 6); /* reset flip-flop */ outb(ATC, 0x10); outb(ATC, buf[5]); inb(adp->va_crtc_addr + 6); /* reset flip-flop */ outb(ATC, 0x20); /* enable palette */ #if VGA_SLOW_IOACCESS #ifdef VGA_ALT_SEQACCESS outb(TSIDX, 0x00); outb(TSREG, 0x01); #endif outb(TSIDX, 0x02); outb(TSREG, buf[0]); outb(TSIDX, 0x04); outb(TSREG, buf[1]); #ifdef VGA_ALT_SEQACCESS outb(TSIDX, 0x00); outb(TSREG, 0x03); #endif outb(GDCIDX, 0x04); outb(GDCREG, buf[2]); outb(GDCIDX, 0x05); outb(GDCREG, buf[3]); if (adp->va_crtc_addr == MONO_CRTC) { outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); } else { outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); } #else /* VGA_SLOW_IOACCESS */ #ifdef VGA_ALT_SEQACCESS outw(TSIDX, 0x0100); #endif outw(TSIDX, 0x0002 | (buf[0] << 8)); outw(TSIDX, 0x0004 | (buf[1] << 8)); #ifdef VGA_ALT_SEQACCESS outw(TSIDX, 0x0300); #endif outw(GDCIDX, 0x0004 | (buf[2] << 8)); outw(GDCIDX, 0x0005 | (buf[3] << 8)); if (adp->va_crtc_addr == MONO_CRTC) outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); else outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); #endif /* VGA_SLOW_IOACCESS */ splx(s); } #endif /* VGA_NO_FONT_LOADING */ /* * save_font(): * Read the font data in the requested font page from the video adapter. * * EGA/VGA */ static int vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data, int ch, int count) { #ifndef VGA_NO_FONT_LOADING u_char buf[PARAM_BUFSIZE]; u_int32_t segment; int c; #ifdef VGA_ALT_SEQACCESS int s; u_char val = 0; #endif prologue(adp, V_ADP_FONT, 1); if (fontsize < 14) { /* FONT_8 */ fontsize = 8; } else if (fontsize >= 32) { fontsize = 32; } else if (fontsize >= 16) { /* FONT_16 */ fontsize = 16; } else { /* FONT_14 */ fontsize = 14; } if (page < 0 || page >= 8) return 1; segment = FONT_BUF + 0x4000*page; if (page > 3) segment -= 0xe000; #ifdef VGA_ALT_SEQACCESS if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ s = splhigh(); outb(TSIDX, 0x00); outb(TSREG, 0x01); outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ outb(TSIDX, 0x01); outb(TSREG, val | 0x20); outb(TSIDX, 0x00); outb(TSREG, 0x03); splx(s); } #endif set_font_mode(adp, buf); if (fontsize == 32) { bcopy_fromio((void *)(segment + ch*32), data, fontsize*count); } else { for (c = ch; count > 0; ++c, --count) { bcopy_fromio((void *)(segment + c*32), data, fontsize); data += fontsize; } } set_normal_mode(adp, buf); #ifdef VGA_ALT_SEQACCESS if (adp->va_type == KD_VGA) { s = splhigh(); outb(TSIDX, 0x00); outb(TSREG, 0x01); outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ outb(TSIDX, 0x00); outb(TSREG, 0x03); splx(s); } #endif return 0; #else /* VGA_NO_FONT_LOADING */ return 1; #endif /* VGA_NO_FONT_LOADING */ } /* * load_font(): * Set the font data in the requested font page. * NOTE: it appears that some recent video adapters do not support * the font page other than 0... XXX * * EGA/VGA */ static int vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data, int ch, int count) { #ifndef VGA_NO_FONT_LOADING u_char buf[PARAM_BUFSIZE]; u_int32_t segment; int c; #ifdef VGA_ALT_SEQACCESS int s; u_char val = 0; #endif prologue(adp, V_ADP_FONT, 1); if (fontsize < 14) { /* FONT_8 */ fontsize = 8; } else if (fontsize >= 32) { fontsize = 32; } else if (fontsize >= 16) { /* FONT_16 */ fontsize = 16; } else { /* FONT_14 */ fontsize = 14; } if (page < 0 || page >= 8) return 1; segment = FONT_BUF + 0x4000*page; if (page > 3) segment -= 0xe000; #ifdef VGA_ALT_SEQACCESS if (adp->va_type == KD_VGA) { /* what about EGA? XXX */ s = splhigh(); outb(TSIDX, 0x00); outb(TSREG, 0x01); outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */ outb(TSIDX, 0x01); outb(TSREG, val | 0x20); outb(TSIDX, 0x00); outb(TSREG, 0x03); splx(s); } #endif set_font_mode(adp, buf); if (fontsize == 32) { bcopy_toio(data, (void *)(segment + ch*32), fontsize*count); } else { for (c = ch; count > 0; ++c, --count) { bcopy_toio(data, (void *)(segment + c*32), fontsize); data += fontsize; } } set_normal_mode(adp, buf); #ifdef VGA_ALT_SEQACCESS if (adp->va_type == KD_VGA) { s = splhigh(); outb(TSIDX, 0x00); outb(TSREG, 0x01); outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */ outb(TSIDX, 0x00); outb(TSREG, 0x03); splx(s); } #endif return 0; #else /* VGA_NO_FONT_LOADING */ return 1; #endif /* VGA_NO_FONT_LOADING */ } /* * show_font(): * Activate the requested font page. * NOTE: it appears that some recent video adapters do not support * the font page other than 0... XXX * * EGA/VGA */ static int vga_show_font(video_adapter_t *adp, int page) { #ifndef VGA_NO_FONT_LOADING static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; int s; prologue(adp, V_ADP_FONT, 1); if (page < 0 || page >= 8) return 1; s = splhigh(); outb(TSIDX, 0x03); outb(TSREG, cg[page]); splx(s); return 0; #else /* VGA_NO_FONT_LOADING */ return 1; #endif /* VGA_NO_FONT_LOADING */ } /* * save_palette(): * Read DAC values. The values have expressed in 8 bits. * * VGA */ static int vga_save_palette(video_adapter_t *adp, u_char *palette) { int i; prologue(adp, V_ADP_PALETTE, 1); /* * We store 8 bit values in the palette buffer, while the standard * VGA has 6 bit DAC . */ outb(PALRADR, 0x00); for (i = 0; i < 256*3; ++i) palette[i] = inb(PALDATA) << 2; inb(adp->va_crtc_addr + 6); /* reset flip/flop */ return 0; } /* * load_palette(): * Set DAC values. * * VGA */ static int vga_load_palette(video_adapter_t *adp, u_char *palette) { int i; prologue(adp, V_ADP_PALETTE, 1); outb(PIXMASK, 0xff); /* no pixelmask */ outb(PALWADR, 0x00); for (i = 0; i < 256*3; ++i) outb(PALDATA, palette[i] >> 2); inb(adp->va_crtc_addr + 6); /* reset flip/flop */ outb(ATC, 0x20); /* enable palette */ return 0; } /* * set_border(): * Change the border color. * * CGA/EGA/VGA */ static int vga_set_border(video_adapter_t *adp, int color) { prologue(adp, V_ADP_BORDER, 1); switch (adp->va_type) { case KD_EGA: case KD_VGA: inb(adp->va_crtc_addr + 6); /* reset flip-flop */ outb(ATC, 0x31); outb(ATC, color & 0xff); break; case KD_CGA: outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */ break; case KD_MONO: case KD_HERCULES: default: break; } return 0; } /* * save_state(): * Read video register values. * NOTE: this function only reads the standard EGA/VGA registers. * any extra/extended registers of SVGA adapters are not saved. * * VGA */ static int vga_save_state(video_adapter_t *adp, void *p, size_t size) { video_info_t info; u_char *buf; int crtc_addr; int i, j; int s; if (size == 0) { /* return the required buffer size */ prologue(adp, V_ADP_STATESAVE, 0); return sizeof(adp_state_t); } else { prologue(adp, V_ADP_STATESAVE, 1); if (size < sizeof(adp_state_t)) return 1; } ((adp_state_t *)p)->sig = V_STATE_SIG; buf = ((adp_state_t *)p)->regs; bzero(buf, V_MODE_PARAM_SIZE); crtc_addr = adp->va_crtc_addr; s = splhigh(); outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ for (i = 0, j = 5; i < 4; i++) { outb(TSIDX, i + 1); buf[j++] = inb(TSREG); } buf[9] = inb(MISC + 10); /* dot-clock */ outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ for (i = 0, j = 10; i < 25; i++) { /* crtc */ outb(crtc_addr, i); buf[j++] = inb(crtc_addr + 1); } for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */ inb(crtc_addr + 6); /* reset flip-flop */ outb(ATC, i); buf[j++] = inb(ATC + 1); } for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */ outb(GDCIDX, i); buf[j++] = inb(GDCREG); } inb(crtc_addr + 6); /* reset flip-flop */ outb(ATC, 0x20); /* enable palette */ splx(s); #if 1 if (vga_get_info(adp, adp->va_mode, &info) == 0) { if (info.vi_flags & V_INFO_GRAPHICS) { buf[0] = info.vi_width/info.vi_cwidth; /* COLS */ buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */ } else { buf[0] = info.vi_width; /* COLS */ buf[1] = info.vi_height - 1; /* ROWS */ } buf[2] = info.vi_cheight; /* POINTS */ } else { /* XXX: shouldn't be happening... */ printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n", adp->va_unit, adp->va_name); } #else buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */ buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */ buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */ buf[3] = readb(BIOS_PADDRTOVADDR(0x44c)); buf[4] = readb(BIOS_PADDRTOVADDR(0x44d)); #endif return 0; } /* * load_state(): * Set video registers at once. * NOTE: this function only updates the standard EGA/VGA registers. * any extra/extended registers of SVGA adapters are not changed. * * EGA/VGA */ static int vga_load_state(video_adapter_t *adp, void *p) { u_char *buf; int crtc_addr; int s; int i; prologue(adp, V_ADP_STATELOAD, 1); if (((adp_state_t *)p)->sig != V_STATE_SIG) return 1; buf = ((adp_state_t *)p)->regs; crtc_addr = adp->va_crtc_addr; s = splhigh(); outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */ for (i = 0; i < 4; ++i) { /* program sequencer */ outb(TSIDX, i + 1); outb(TSREG, buf[i + 5]); } outb(MISC, buf[9]); /* set dot-clock */ outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */ outb(crtc_addr, 0x11); outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F); for (i = 0; i < 25; ++i) { /* program crtc */ outb(crtc_addr, i); outb(crtc_addr + 1, buf[i + 10]); } inb(crtc_addr+6); /* reset flip-flop */ for (i = 0; i < 20; ++i) { /* program attribute ctrl */ outb(ATC, i); outb(ATC, buf[i + 35]); } for (i = 0; i < 9; ++i) { /* program graph data ctrl */ outb(GDCIDX, i); outb(GDCREG, buf[i + 55]); } inb(crtc_addr + 6); /* reset flip-flop */ outb(ATC, 0x20); /* enable palette */ #if notyet /* a temporary workaround for kernel panic, XXX */ #ifndef VGA_NO_BIOS if (adp->va_unit == V_ADP_PRIMARY) { writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */ writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */ writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */ #if 0 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]); writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]); #endif } #endif /* VGA_NO_BIOS */ #endif /* notyet */ splx(s); return 0; } /* * set_origin(): * Change the origin (window mapping) of the banked frame buffer. */ static int vga_set_origin(video_adapter_t *adp, off_t offset) { /* * The standard video modes do not require window mapping; * always return error. */ return 1; } /* * read_hw_cursor(): * Read the position of the hardware text cursor. * * all adapters */ static int vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row) { u_int16_t off; int s; if (!init_done) return 1; if (adp->va_info.vi_flags & V_INFO_GRAPHICS) return 1; s = spltty(); outb(adp->va_crtc_addr, 14); off = inb(adp->va_crtc_addr + 1); outb(adp->va_crtc_addr, 15); off = (off << 8) | inb(adp->va_crtc_addr + 1); splx(s); *row = off / adp->va_info.vi_width; *col = off % adp->va_info.vi_width; return 0; } /* * set_hw_cursor(): * Move the hardware text cursor. If col and row are both -1, * the cursor won't be shown. * * all adapters */ static int vga_set_hw_cursor(video_adapter_t *adp, int col, int row) { u_int16_t off; int s; if (!init_done) return 1; if ((col == -1) && (row == -1)) { off = -1; } else { if (adp->va_info.vi_flags & V_INFO_GRAPHICS) return 1; off = row*adp->va_info.vi_width + col; } s = spltty(); outb(adp->va_crtc_addr, 14); outb(adp->va_crtc_addr + 1, off >> 8); outb(adp->va_crtc_addr, 15); outb(adp->va_crtc_addr + 1, off & 0x00ff); splx(s); return 0; } /* * set_hw_cursor_shape(): * Change the shape of the hardware text cursor. If the height is * zero or negative, the cursor won't be shown. * * all adapters */ static int vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, int celsize, int blink) { int s; if (!init_done) return 1; s = spltty(); switch (adp->va_type) { case KD_VGA: case KD_CGA: case KD_MONO: case KD_HERCULES: default: if (height <= 0) { /* make the cursor invisible */ outb(adp->va_crtc_addr, 10); outb(adp->va_crtc_addr + 1, 32); outb(adp->va_crtc_addr, 11); outb(adp->va_crtc_addr + 1, 0); } else { outb(adp->va_crtc_addr, 10); outb(adp->va_crtc_addr + 1, celsize - base - height); outb(adp->va_crtc_addr, 11); outb(adp->va_crtc_addr + 1, celsize - base - 1); } break; case KD_EGA: if (height <= 0) { /* make the cursor invisible */ outb(adp->va_crtc_addr, 10); outb(adp->va_crtc_addr + 1, celsize); outb(adp->va_crtc_addr, 11); outb(adp->va_crtc_addr + 1, 0); } else { outb(adp->va_crtc_addr, 10); outb(adp->va_crtc_addr + 1, celsize - base - height); outb(adp->va_crtc_addr, 11); outb(adp->va_crtc_addr + 1, celsize - base); } break; } splx(s); return 0; } /* * mmap(): * Mmap frame buffer. * * all adapters */ static int vga_mmap(video_adapter_t *adp, vm_offset_t offset) { if (offset > 0x20000 - PAGE_SIZE) return -1; #ifdef __i386__ return i386_btop((VIDEO_BUF_BASE + offset)); #endif #ifdef __alpha__ return alpha_btop((VIDEO_BUF_BASE + offset)); #endif } static void dump_buffer(u_char *buf, size_t len) { int i; for(i = 0; i < len;) { printf("%02x ", buf[i]); if ((++i % 16) == 0) printf("\n"); } } /* * diag(): * Print some information about the video adapter and video modes, * with requested level of details. * * all adapters */ static int vga_diag(video_adapter_t *adp, int level) { #if FB_DEBUG > 1 video_info_t info; #endif u_char *mp; if (!init_done) return 1; #if FB_DEBUG > 1 #ifndef VGA_NO_BIOS printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n", rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488))); printf("vga: CRTC:0x%x, video option:0x%02x, ", readw(BIOS_PADDRTOVADDR(0x463)), readb(BIOS_PADDRTOVADDR(0x487))); printf("rows:%d, cols:%d, font height:%d\n", readb(BIOS_PADDRTOVADDR(0x44a)), readb(BIOS_PADDRTOVADDR(0x484)) + 1, readb(BIOS_PADDRTOVADDR(0x485))); #endif /* VGA_NO_BIOS */ #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) printf("vga: param table EGA/VGA:%p", video_mode_ptr); printf(", CGA/MDA:%p\n", video_mode_ptr2); #endif printf("vga: rows_offset:%d\n", rows_offset); #endif /* FB_DEBUG > 1 */ fb_dump_adp_info(DRIVER_NAME, adp, level); #if FB_DEBUG > 1 if (adp->va_flags & V_ADP_MODECHANGE) { for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) { if (bios_vmode[i].vi_mode == NA) continue; if (get_mode_param(bios_vmode[i].vi_mode) == NULL) continue; fb_dump_mode_info(DRIVER_NAME, adp, &bios_vmode[i], level); } } else { vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */ fb_dump_mode_info(DRIVER_NAME, adp, &info, level); } #endif /* FB_DEBUG > 1 */ if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA)) return 0; #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) if (video_mode_ptr == NULL) printf("vga%d: %s: WARNING: video mode switching is not " "fully supported on this adapter\n", adp->va_unit, adp->va_name); #endif if (level <= 0) return 0; if (adp->va_type == KD_VGA) { printf("VGA parameters upon power-up\n"); dump_buffer(adpstate.regs, sizeof(adpstate.regs)); printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode); dump_buffer(adpstate2.regs, sizeof(adpstate2.regs)); } mp = get_mode_param(adp->va_initial_mode); if (mp == NULL) /* this shouldn't be happening */ return 0; printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode); dump_buffer(mp, V_MODE_PARAM_SIZE); return 0; } #endif /* NVGA > 0 */