/*- * Copyright (c) 1998 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: videoio.c,v 1.5 1998/09/26 03:38:40 yokota Exp $ */ #include "sc.h" #include "opt_syscons.h" #if NSC > 0 #include #include #include #include #include #include #include #include #include #include #include /* this should really be in `rtc.h' */ #define RTC_EQUIPMENT 0x14 /* 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[] = { { 0, KD_MONO, 0, MONO_BASE, 0xb0000, 32*1024, 32*1024, 0, 0, 0, 7, 0 }, { 0, KD_CGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32*1024, 32*1024, 0, 0, 0, 3, 0 }, { 0, KD_CGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32*1024, 32*1024, 0, 0, 0, 3, 0 }, { 0, KD_EGA, 0, MONO_BASE, 0xb0000, 32*1024, 32*1024, 0, 0, 0, 7, 0 }, { 0, KD_EGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32*1024, 32*1024, 0, 0, 0, 3, 0 }, { 0, KD_EGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32*1024, 32*1024, 0, 0, 0, 3, 0 }, }; static video_adapter_t adapter[V_MAX_ADAPTERS]; static int adapters = 0; /* VGA function entries */ static vi_init_t vid_init; static vi_adapter_t vid_adapter; static vi_get_info_t vid_get_info; static vi_query_mode_t vid_query_mode; static vi_set_mode_t vid_set_mode; static vi_save_font_t vid_save_font; static vi_load_font_t vid_load_font; static vi_show_font_t vid_show_font; static vi_save_palette_t vid_save_palette; static vi_load_palette_t vid_load_palette; static vi_set_border_t vid_set_border; static vi_save_state_t vid_save_state; static vi_load_state_t vid_load_state; static vi_set_win_org_t vid_set_origin; static vi_read_hw_cursor_t vid_read_hw_cursor; static vi_set_hw_cursor_t vid_set_hw_cursor; static vi_diag_t vid_diag; struct vidsw biosvidsw = { vid_init, vid_adapter, vid_get_info, vid_query_mode, vid_set_mode, vid_save_font, vid_load_font, vid_show_font, vid_save_palette,vid_load_palette,vid_set_border,vid_save_state, vid_load_state, vid_set_origin, vid_read_hw_cursor, vid_set_hw_cursor, vid_diag, }; /* 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, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, /* EGA */ { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, /* VGA */ { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1, 0xb0000, 32*1024, 32*1024, 0, 0 }, { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, /* MDA */ { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1, 0xb0000, 32*1024, 32*1024, 0, 0 }, /* EGA */ { M_ENH_B80x43, V_INFO_COLOR, 80, 43, 8, 8, 2, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, /* VGA */ { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1, 0xb0000, 32*1024, 32*1024, 0, 0 }, { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1, 0xb0000, 32*1024, 32*1024, 0, 0 }, { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1, 0xb0000, 32*1024, 32*1024, 0, 0 }, { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, /* CGA */ { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1, 0xb8000, 32*1024, 32*1024, 0, 0 }, /* EGA */ { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4, 0xa0000, 64*1024, 64*1024, 0, 0 }, { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4, 0xa0000, 64*1024, 64*1024, 0, 0 }, { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 0xa0000, 64*1024, 64*1024, 0, 0 }, { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 0xa0000, 64*1024, 64*1024, 0, 0 }, { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2, 0xa0000, 64*1024, 64*1024, 0, 0 }, { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, 0xa0000, 64*1024, 64*1024, 0, 0 }, /* VGA */ { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 0xa0000, 64*1024, 64*1024, 0, 0 }, { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4, 0xa0000, 64*1024, 64*1024, 0, 0 }, { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1, 0xa0000, 64*1024, 64*1024, 0, 0 }, { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 1, 0xa0000, 64*1024, 64*1024, 0, 0 }, { EOT }, }; static int init_done = FALSE; static u_char *video_mode_ptr = NULL; /* EGA/VGA */ static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */ 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)) static void map_mode_table(u_char *map[], u_char *table, int max); static void clear_mode_map(int ad, u_char *map[], int max, int color); static int map_mode_num(int mode); 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); static void fill_adapter_param(int code, video_adapter_t *adp); static int verify_adapter(video_adapter_t *adp); #define COMP_IDENTICAL 0 #define COMP_SIMILAR 1 #define COMP_DIFFERENT 2 static int comp_adpregs(u_char *buf1, u_char *buf2); #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); static char *adapter_name(int type); static void dump_adp_info(int ad, video_adapter_t *adp, int level); static void dump_mode_info(int ad, video_info_t *info, int level); static void dump_buffer(u_char *buf, size_t len); extern void generic_bcopy(const void *, void *, size_t); #define ISMAPPED(pa, width) \ (((pa) <= (u_long)0x1000 - (width)) \ || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width))) #define prologue(ad, flag, err) \ if (!init_done \ || ((ad) < 0) || ((ad) >= adapters) \ || !(adapter[(ad)].va_flags & (flag))) \ return (err) /* 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; } static void clear_mode_map(int ad, 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 (vid_get_info(ad, i, &info)) continue; if ((info.vi_flags & V_INFO_COLOR) != color) map[i] = NULL; } } /* 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; } /* 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 (mode >= V_MODE_MAP_SIZE) mode = map_mode_num(mode); if ((mode >= 0) && (mode < V_MODE_MAP_SIZE)) return mode_map[mode]; else return NULL; } 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]; } } static int verify_adapter(video_adapter_t *adp) { u_short volatile *buf; u_short v; u_int32_t p; buf = (u_short *)BIOS_PADDRTOVADDR(adp->va_window); v = *buf; *buf = (u_short) 0xA55A; if (*buf != 0xA55A) return 1; *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_flags |= V_ADP_STATESAVE | V_ADP_PALETTE; } adp->va_flags |= V_ADP_STATELOAD | V_ADP_FONT | V_ADP_BORDER; /* the color adapter may be in the 40x25 mode... XXX */ /* 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); } break; case KD_CGA: adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER; /* may be in the 40x25 mode... XXX */ break; case KD_MONO: break; } return 0; } /* 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; } /* entry points */ /* * init() * Return the # of video adapters found; usually 1 or 0. * * all adapters */ static int vid_init(void) { video_adapter_t *adp; video_info_t info; u_char *mp; int i; /* do this test only once */ if (init_done) return adapters; 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 date area. * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead * copy of RTC_EQUIPMENT. Bits 4 and 5 of the 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. */ switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */ case 0: /* EGA/VGA */ fill_adapter_param(*(u_int8_t *)BIOS_PADDRTOVADDR(0x488) & 0x0f, adapter); break; case 1: /* CGA 40x25 */ /* FIXME: switch to the 80x25 mode? XXX */ adapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40]; adapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; break; case 2: /* CGA 80x25 */ adapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80]; adapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO]; break; case 3: /* MDA */ adapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO]; adapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80]; break; } adapters = 0; if (verify_adapter(&adapter[V_ADP_SECONDARY]) == 0) { ++adapters; adapter[V_ADP_SECONDARY].va_mode = adapter[V_ADP_SECONDARY].va_initial_mode = map_bios_mode_num(adapter[V_ADP_SECONDARY].va_type, adapter[V_ADP_SECONDARY].va_flags & V_ADP_COLOR, adapter[V_ADP_SECONDARY].va_initial_bios_mode); } else { adapter[V_ADP_SECONDARY].va_type = -1; } if (verify_adapter(&adapter[V_ADP_PRIMARY]) == 0) { ++adapters; adapter[V_ADP_PRIMARY].va_initial_bios_mode = *(u_int8_t *)BIOS_PADDRTOVADDR(0x449); adapter[V_ADP_PRIMARY].va_mode = adapter[V_ADP_PRIMARY].va_initial_mode = map_bios_mode_num(adapter[V_ADP_PRIMARY].va_type, adapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR, adapter[V_ADP_PRIMARY].va_initial_bios_mode); } else { adapter[V_ADP_PRIMARY] = adapter[V_ADP_SECONDARY]; adapter[V_ADP_SECONDARY].va_type = -1; } if (adapters == 0) return adapters; adapter[V_ADP_PRIMARY].va_index = V_ADP_PRIMARY; adapter[V_ADP_SECONDARY].va_index = V_ADP_SECONDARY; #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 (adapters > 1) { if (!((adapter[0].va_flags ^ adapter[1].va_flags) & V_ADP_COLOR)) /* we have two mono or color adapters!! */ return (adapters = 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 vid_save_state() for VGA. */ outb(adapter[V_ADP_PRIMARY].va_crtc_addr, 12); outb(adapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0); outb(adapter[V_ADP_PRIMARY].va_crtc_addr, 13); outb(adapter[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 ((adapter[V_ADP_PRIMARY].va_type == KD_EGA) || (adapter[V_ADP_PRIMARY].va_type == KD_VGA)) { adp = &adapter[V_ADP_PRIMARY]; } else if ((adapter[V_ADP_SECONDARY].va_type == KD_EGA) || (adapter[V_ADP_SECONDARY].va_type == KD_VGA)) { adp = &adapter[V_ADP_SECONDARY]; } else { adp = NULL; } bzero(mode_map, sizeof(mode_map)); if (adp != NULL) { if (adp->va_type == KD_VGA) { vid_save_state(adp - adapter, &adpstate, sizeof(adpstate)); if (video_mode_ptr == NULL) { mode_map[map_mode_num(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[map_mode_num(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[map_mode_num(adp->va_initial_mode)] = adpstate.regs; rows_offset = 1; break; } } adp->va_flags |= V_ADP_MODECHANGE; } else if (adp->va_type == KD_EGA) { if (video_mode_ptr == NULL) { adp->va_flags &= ~V_ADP_FONT; 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; rows_offset = 1; } else { /* * This is serious. We will not be able to switch video * modes at all... */ adp->va_flags &= ~V_ADP_FONT; video_mode_ptr = NULL; bzero(mode_map, sizeof(mode_map)); rows_offset = 1; } } } } /* remove conflicting modes if we have more than one adapter */ if (adapters > 1) { for (i = 0; i < adapters; ++i) { if (!(adapter[i].va_flags & V_ADP_MODECHANGE)) continue; clear_mode_map(i, mode_map, M_VGA_CG320 + 1, (adapter[i].va_flags & V_ADP_COLOR) ? V_INFO_COLOR : 0); } } /* buffer address */ vid_get_info(V_ADP_PRIMARY, adapter[V_ADP_PRIMARY].va_initial_mode, &info); adapter[V_ADP_PRIMARY].va_window = BIOS_PADDRTOVADDR(info.vi_window); adapter[V_ADP_PRIMARY].va_window_size = info.vi_window_size; adapter[V_ADP_PRIMARY].va_window_gran = info.vi_window_gran; adapter[V_ADP_PRIMARY].va_buffer = BIOS_PADDRTOVADDR(info.vi_buffer); adapter[V_ADP_PRIMARY].va_buffer_size = info.vi_buffer_size; if (adapters > 1) { vid_get_info(V_ADP_SECONDARY, adapter[V_ADP_SECONDARY].va_initial_mode, &info); adapter[V_ADP_SECONDARY].va_window = BIOS_PADDRTOVADDR(info.vi_window); adapter[V_ADP_SECONDARY].va_window_size = info.vi_window_size; adapter[V_ADP_SECONDARY].va_window_gran = info.vi_window_gran; adapter[V_ADP_SECONDARY].va_buffer = BIOS_PADDRTOVADDR(info.vi_buffer); adapter[V_ADP_SECONDARY].va_buffer_size = info.vi_buffer_size; } /* * 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 adapters; } /* * adapter(); * Return a pointer to the video_adapter structure of the requested * adapter. * * all adapters */ static video_adapter_t *vid_adapter(int ad) { if (!init_done) return NULL; if ((ad < 0) || (ad >= adapters)) return NULL; return &adapter[ad]; } /* * get_info(): * Return the video_info structure of the requested video mode. * * all adapters */ static int vid_get_info(int ad, int mode, video_info_t *info) { int i; if (!init_done) return 1; if ((ad < 0) || (ad >= adapters)) return 1; mode = map_gen_mode_num(adapter[ad].va_type, adapter[ad].va_flags & V_ADP_COLOR, mode); if (adapter[ad].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 { /* * 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 != adapter[ad].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 vid_query_mode(int ad, video_info_t *info) { video_info_t buf; int i; if (!init_done) return -1; if ((ad < 0) || (ad >= adapters)) 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 (vid_get_info(ad, 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 vid_set_mode(int ad, int mode) { video_info_t info; adp_state_t params; prologue(ad, V_ADP_MODECHANGE, 1); mode = map_gen_mode_num(adapter[ad].va_type, adapter[ad].va_flags & V_ADP_COLOR, mode); if (vid_get_info(ad, 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: vid_load_state(ad, ¶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: vid_load_state(ad, ¶ms); break; default: return 1; } adapter[ad].va_mode = mode; adapter[ad].va_flags &= ~V_ADP_COLOR; adapter[ad].va_flags |= (info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0; adapter[ad].va_crtc_addr = (adapter[ad].va_flags & V_ADP_COLOR) ? COLOR_BASE : MONO_BASE; adapter[ad].va_window = BIOS_PADDRTOVADDR(info.vi_window); adapter[ad].va_window_size = info.vi_window_size; adapter[ad].va_window_gran = info.vi_window_gran; if (info.vi_buffer_size == 0) { adapter[ad].va_buffer = 0; adapter[ad].va_buffer_size = 0; } else { adapter[ad].va_buffer = BIOS_PADDRTOVADDR(info.vi_buffer); adapter[ad].va_buffer_size = info.vi_buffer_size; } return 0; } 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 SLOW_VGA #ifdef SC_ALT_SEQACCESS outb(TSIDX, 0x00); outb(TSREG, 0x01); #endif outb(TSIDX, 0x02); outb(TSREG, 0x04); outb(TSIDX, 0x04); outb(TSREG, 0x07); #ifdef SC_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 #ifdef SC_ALT_SEQACCESS outw(TSIDX, 0x0100); #endif outw(TSIDX, 0x0402); outw(TSIDX, 0x0704); #ifdef SC_ALT_SEQACCESS outw(TSIDX, 0x0300); #endif outw(GDCIDX, 0x0204); outw(GDCIDX, 0x0005); outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */ #endif 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 SLOW_VGA #ifdef SC_ALT_SEQACCESS outb(TSIDX, 0x00); outb(TSREG, 0x01); #endif outb(TSIDX, 0x02); outb(TSREG, buf[0]); outb(TSIDX, 0x04); outb(TSREG, buf[1]); #ifdef SC_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_BASE) { outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08); } else { outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c); } #else #ifdef SC_ALT_SEQACCESS outw(TSIDX, 0x0100); #endif outw(TSIDX, 0x0002 | (buf[0] << 8)); outw(TSIDX, 0x0004 | (buf[1] << 8)); #ifdef SC_ALT_SEQACCESS outw(TSIDX, 0x0300); #endif outw(GDCIDX, 0x0004 | (buf[2] << 8)); outw(GDCIDX, 0x0005 | (buf[3] << 8)); if (adp->va_crtc_addr == MONO_BASE) outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8)); else outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8)); #endif splx(s); } /* * save_font(): * Read the font data in the requested font page from the video adapter. * * EGA/VGA */ static int vid_save_font(int ad, int page, int fontsize, u_char *data, int ch, int count) { u_char buf[PARAM_BUFSIZE]; u_char val = 0; u_int32_t segment; int c; int s; prologue(ad, 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 = VIDEOMEM + 0x4000*page; if (page > 3) segment -= 0xe000; #ifdef SC_ALT_SEQACCESS if (adapter[ad].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(&adapter[ad], buf); if (fontsize == 32) { generic_bcopy((void *)BIOS_PADDRTOVADDR(segment + ch*32), data, fontsize*count); } else { for (c = ch; count > 0; ++c, --count) { generic_bcopy((void *)BIOS_PADDRTOVADDR(segment + c*32), data, fontsize); data += fontsize; } } set_normal_mode(&adapter[ad], buf); #ifdef SC_ALT_SEQACCESS if (adapter[ad].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; } /* * 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 vid_load_font(int ad, int page, int fontsize, u_char *data, int ch, int count) { u_char buf[PARAM_BUFSIZE]; u_char val = 0; u_int32_t segment; int c; int s; prologue(ad, 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 = VIDEOMEM + 0x4000*page; if (page > 3) segment -= 0xe000; #ifdef SC_ALT_SEQACCESS if (adapter[ad].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(&adapter[ad], buf); if (fontsize == 32) { generic_bcopy(data, (void *)BIOS_PADDRTOVADDR(segment + ch*32), fontsize*count); } else { for (c = ch; count > 0; ++c, --count) { generic_bcopy(data, (void *)BIOS_PADDRTOVADDR(segment + c*32), fontsize); data += fontsize; } } set_normal_mode(&adapter[ad], buf); #ifdef SC_ALT_SEQACCESS if (adapter[ad].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; } /* * 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 vid_show_font(int ad, int page) { static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f }; int s; prologue(ad, V_ADP_FONT, 1); if (page < 0 || page >= 8) return 1; s = splhigh(); outb(TSIDX, 0x03); outb(TSREG, cg[page]); splx(s); return 0; } /* * save_palette(): * Read DAC values. The values have expressed in 8 bits. * * VGA */ static int vid_save_palette(int ad, u_char *palette) { int i; prologue(ad, 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(adapter[ad].va_crtc_addr + 6); /* reset flip/flop */ return 0; } /* * load_palette(): * Set DAC values. * * VGA */ static int vid_load_palette(int ad, u_char *palette) { int i; prologue(ad, 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(adapter[ad].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 vid_set_border(int ad, int color) { prologue(ad, V_ADP_BORDER, 1); switch (adapter[ad].va_type) { case KD_EGA: case KD_VGA: inb(adapter[ad].va_crtc_addr + 6); /* reset flip-flop */ outb(ATC, 0x31); outb(ATC, color & 0xff); break; case KD_CGA: outb(adapter[ad].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 vid_save_state(int ad, 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(ad, V_ADP_STATESAVE, 0); return sizeof(adp_state_t); } else { prologue(ad, 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 = adapter[ad].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 (vid_get_info(ad, adapter[ad].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("video#%d: failed to obtain mode info. (vid_save_state())\n", ad); } #else buf[0] = *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a); /* COLS */ buf[1] = *(u_int8_t *)BIOS_PADDRTOVADDR(0x484); /* ROWS */ buf[2] = *(u_int8_t *)BIOS_PADDRTOVADDR(0x485); /* POINTS */ buf[3] = *(u_int8_t *)BIOS_PADDRTOVADDR(0x44c); buf[4] = *(u_int8_t *)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 vid_load_state(int ad, void *p) { u_char *buf; int crtc_addr; int s; int i; prologue(ad, V_ADP_STATELOAD, 1); if (((adp_state_t *)p)->sig != V_STATE_SIG) return 1; buf = ((adp_state_t *)p)->regs; crtc_addr = adapter[ad].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 (ad == V_ADP_PRIMARY) { *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a) = buf[0]; /* COLS */ *(u_int8_t *)BIOS_PADDRTOVADDR(0x484) = buf[1] + rows_offset - 1; /* ROWS */ *(u_int8_t *)BIOS_PADDRTOVADDR(0x485) = buf[2]; /* POINTS */ #if 0 *(u_int8_t *)BIOS_PADDRTOVADDR(0x44c) = buf[3]; *(u_int8_t *)BIOS_PADDRTOVADDR(0x44d) = buf[4]; #endif } splx(s); return 0; } /* * set_origin(): * Change the origin (window mapping) of the banked frame buffer. */ static int vid_set_origin(int ad, 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 vid_read_hw_cursor(int ad, int *col, int *row) { video_info_t info; u_int16_t off; if (!init_done) return 1; if ((ad < 0) || (ad >= adapters)) return 1; (*biosvidsw.get_info)(ad, adapter[ad].va_mode, &info); if (info.vi_flags & V_INFO_GRAPHICS) return 1; outb(adapter[ad].va_crtc_addr, 14); off = inb(adapter[ad].va_crtc_addr + 1); outb(adapter[ad].va_crtc_addr, 15); off = (off << 8) | inb(adapter[ad].va_crtc_addr + 1); *row = off / info.vi_width; *col = off % info.vi_width; return 0; } /* * set_hw_cursor(): * Move the hardware text cursor. If the requested position is (-1, -1), * the text cursor won't be shown. * * all adapters */ static int vid_set_hw_cursor(int ad, int col, int row) { video_info_t info; u_int16_t off; if (!init_done) return 1; if ((ad < 0) || (ad >= adapters)) return 1; (*biosvidsw.get_info)(ad, adapter[ad].va_mode, &info); if (info.vi_flags & V_INFO_GRAPHICS) return 1; if ((col == -1) || (row == -1)) off = 0xffff; else off = row*info.vi_width + col; outb(adapter[ad].va_crtc_addr, 14); outb(adapter[ad].va_crtc_addr + 1, off >> 8); outb(adapter[ad].va_crtc_addr, 15); outb(adapter[ad].va_crtc_addr + 1, off & 0x00ff); return 0; } static char *adapter_name(int type) { static struct { int type; char *name; } names[] = { { KD_MONO, "MDA" }, { KD_HERCULES, "Hercules" }, { KD_CGA, "CGA" }, { KD_EGA, "EGA" }, { KD_VGA, "VGA" }, { KD_PC98, "PC-98xx" }, { -1, "Unknown" }, }; int i; for (i = 0; names[i].type != -1; ++i) if (names[i].type == type) break; return names[i].name; } static void dump_adp_info(int ad, video_adapter_t *adp, int level) { if (level <= 0) return; printf("video#%d: adapter type:%s (%d), flags:0x%x, CRTC:0x%x\n", ad, adapter_name(adp->va_type), adp->va_type, adp->va_flags, adp->va_crtc_addr); printf("video#%d: init mode:%d, bios mode:%d, current mode:%d\n", ad, adp->va_initial_mode, adp->va_initial_bios_mode, adp->va_mode); printf("video#%d: window:0x%x size:%dk gran:%dk, buf:0x%x size:%dk\n", ad, adp->va_window, adp->va_window_size/1024, adp->va_window_gran/1024, adp->va_buffer, adp->va_buffer_size/1024); } static void dump_mode_info(int ad, video_info_t *info, int level) { if (level <= 0) return; printf("video#%d: mode:%d, flags:0x%x ", ad, info->vi_mode, info->vi_flags); if (info->vi_flags & V_INFO_GRAPHICS) printf("G %dx%dx%d, %d plane(s), font:%dx%d, ", info->vi_width, info->vi_height, info->vi_depth, info->vi_planes, info->vi_cwidth, info->vi_cheight); else printf("T %dx%d, font:%dx%d, ", info->vi_width, info->vi_height, info->vi_cwidth, info->vi_cheight); printf("win:0x%x\n", info->vi_window); } 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 vid_diag(int level) { video_info_t info; u_char *mp; int ad; int i; if (!init_done) return 1; if (level > 0) { printf("video: RTC equip. code:0x%02x, DCC code:0x%02x\n", rtcin(RTC_EQUIPMENT), *(u_int8_t *)BIOS_PADDRTOVADDR(0x488)); printf("video: CRTC:0x%x, video option:0x%02x, ", *(u_int16_t *)BIOS_PADDRTOVADDR(0x463), *(u_int8_t *)BIOS_PADDRTOVADDR(0x487)); printf("rows:%d, cols:%d, font height:%d\n", *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a), *(u_int8_t *)BIOS_PADDRTOVADDR(0x484) + 1, *(u_int8_t *)BIOS_PADDRTOVADDR(0x485)); printf("video: param table EGA/VGA:%p, CGA/MDA:%p\n", video_mode_ptr, video_mode_ptr2); printf("video: rows_offset:%d\n", rows_offset); } for (ad = 0; ad < adapters; ++ad) { dump_adp_info(ad, &adapter[ad], level); if (!(adapter[ad].va_flags & V_ADP_MODECHANGE)) { vid_get_info(ad, adapter[ad].va_initial_mode, &info); dump_mode_info(ad, &info, level); } else { 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; dump_mode_info(ad, &bios_vmode[i], level); } } if ((adapter[ad].va_type != KD_EGA) && (adapter[ad].va_type != KD_VGA)) continue; if (video_mode_ptr == NULL) printf("video#%d: WARNING: video mode switching is not fully supported on this adapter\n", ad); if (level <= 0) continue; if (adapter[ad].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", adapter[ad].va_initial_mode); dump_buffer(adpstate2.regs, sizeof(adpstate2.regs)); } mp = get_mode_param(adapter[ad].va_initial_mode); if (mp == NULL) /* this shouldn't be happening */ continue; printf("EGA/VGA parameters to be used for mode %d\n", adapter[ad].va_initial_mode); dump_buffer(mp, V_MODE_PARAM_SIZE); } return 0; } #endif /* NSC > 0 */