diff options
Diffstat (limited to 'sys/i386/isa/videoio.c')
| -rw-r--r-- | sys/i386/isa/videoio.c | 1612 |
1 files changed, 1612 insertions, 0 deletions
diff --git a/sys/i386/isa/videoio.c b/sys/i386/isa/videoio.c new file mode 100644 index 0000000..85c8f8d --- /dev/null +++ b/sys/i386/isa/videoio.c @@ -0,0 +1,1612 @@ +/*- + * Copyright (c) 1998 Kazutaka YOKOTA (yokota@zodiac.mech.utsunomiya-u.ac.jp) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. 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 REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $Id$ + */ + +#include "sc.h" +#include "opt_syscons.h" + +#if NSC > 0 + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <vm/vm.h> +#include <vm/pmap.h> + +#include <machine/clock.h> +#include <machine/console.h> +#include <machine/md_var.h> +#include <machine/pc/bios.h> + +#include <i386/isa/isa.h> +#include <i386/isa/videoio.h> + +/* 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, 32, 0, 0, 0, 7, 0 }, + { 0, KD_CGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32, 32, 0, 0, 0, 3, 0 }, + { 0, KD_CGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32, 32, 0, 0, 0, 3, 0 }, + { 0, KD_EGA, 0, MONO_BASE, 0xb0000, 32, 32, 0, 0, 0, 7, 0 }, + { 0, KD_EGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32, 32, 0, 0, 0, 3, 0 }, + { 0, KD_EGA, V_ADP_COLOR, COLOR_BASE, 0xb8000, 32, 32, 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, 32, 0, 32 }, + { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1, 0xb8000, 32, 32, 0, 32 }, + { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1, 0xb8000, 32, 32, 0, 32 }, + { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1, 0xb8000, 32, 32, 0, 32 }, + /* EGA */ + { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1, 0xb8000, 32, 32, 0, 32 }, + { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1, 0xb8000, 32, 32, 0, 32 }, + { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1, 0xb8000, 32, 32, 0, 32 }, + { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1, 0xb8000, 32, 32, 0, 32 }, + /* VGA */ + { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1, 0xb8000, 32, 32, 0, 32 }, + { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1, 0xb0000, 32, 32, 0, 32 }, + { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1, 0xb8000, 32, 32, 0, 32 }, + /* MDA */ + { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1, 0xb0000, 32, 32, 0, 32 }, + /* EGA */ + { M_ENH_B80x43, V_INFO_COLOR, 80, 43, 8, 8, 2, 1, 0xb8000, 32, 32, 0, 32 }, + { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1, 0xb8000, 32, 32, 0, 32 }, + /* VGA */ + { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1, 0xb0000, 32, 32, 0, 32 }, + { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1, 0xb8000, 32, 32, 0, 32 }, + { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1, 0xb0000, 32, 32, 0, 32 }, + { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1, 0xb8000, 32, 32, 0, 32 }, + { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1, 0xb0000, 32, 32, 0, 32 }, + { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1, 0xb8000, 32, 32, 0, 32 }, + /* CGA */ + { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, + 320, 200, 8, 8, 2, 1, 0xb8000, 32, 32, 0, 32 }, + { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, + 320, 200, 8, 8, 2, 1, 0xb8000, 32, 32, 0, 32 }, + { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, + 640, 200, 8, 8, 1, 1, 0xb8000, 32, 32, 0, 32 }, + /* EGA */ + { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, + 320, 200, 8, 8, 4, 4, 0xa0000, 64, 64, 0, 64 }, + { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, + 640, 200, 8, 8, 4, 4, 0xa0000, 64, 64, 0, 64 }, + { M_EGAMONOAPA, V_INFO_GRAPHICS, + 640, 350, 8, 14, 4, 4, 0xa0000, 64, 64, 0, 64 }, + { M_ENHMONOAPA2,V_INFO_GRAPHICS, + 640, 350, 8, 14, 4, 4, 0xa0000, 64, 64, 0, 64 }, + { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, + 640, 350, 8, 14, 2, 2, 0xa0000, 64, 64, 0, 64 }, + { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, + 640, 350, 8, 14, 4, 4, 0xa0000, 64, 64, 0, 64 }, + /* VGA */ + { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, + 640, 480, 8, 16, 4, 4, 0xa0000, 64, 64, 0, 64 }, + { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, + 640, 480, 8, 16, 4, 4, 0xa0000, 64, 64, 0, 64 }, + { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, + 320, 200, 8, 8, 8, 1, 0xa0000, 64, 64, 0, 64 }, + { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, + 320, 240, 8, 8, 8, 1, 0xa0000, 64, 64, 0, 64 }, + + { 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_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; + } +} + +/* the non-standard video mode is based on a standard mode... */ +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; +} + +/* 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 < 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; +} + +/* exported functions */ + +/* 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: don't use BIOSDATA_EQUIPMENT, it is not a dead copy + * of RTC_EQUIPMENT. The bit 4 and 5 of the ETC_EQUIPMENT are + * zeros for EGA and VGA. However, the EGA/VGA BIOS will set + * 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; +} + +/* 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]; +} + +/* 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; + + 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; +} + +/* 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; +} + +/* 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); + + 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 +#ifndef SC_BAD_FLICKER + outb(TSIDX, 0x00); outb(TSREG, 0x01); +#endif + outb(TSIDX, 0x02); outb(TSREG, 0x04); + outb(TSIDX, 0x04); outb(TSREG, 0x07); +#ifndef SC_BAD_FLICKER + 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 +#ifndef SC_BAD_FLICKER + outw(TSIDX, 0x0100); +#endif + outw(TSIDX, 0x0402); + outw(TSIDX, 0x0704); +#ifndef SC_BAD_FLICKER + 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 +#ifndef SC_BAD_FLICKER + outb(TSIDX, 0x00); outb(TSREG, 0x01); +#endif + outb(TSIDX, 0x02); outb(TSREG, buf[0]); + outb(TSIDX, 0x04); outb(TSREG, buf[1]); +#ifndef SC_BAD_FLICKER + 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 +#ifndef SC_BAD_FLICKER + outw(TSIDX, 0x0100); +#endif + outw(TSIDX, 0x0002 | (buf[0] << 8)); + outw(TSIDX, 0x0004 | (buf[1] << 8)); +#ifndef SC_BAD_FLICKER + 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); +} + +/* 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; + + 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); + } + + 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); + + 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); + } + + return 0; +} + +/* 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; + + 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); + } + + 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); + + 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); + } + + return 0; +} + +/* 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; +} + +/* 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; +} + +/* 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; +} + +/* 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; +} + +/* 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; +} + +/* 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; +} + +/* all */ +static int +vid_set_origin(int ad, off_t offset) +{ + /* + * The standard video modes do not require window mapping; + * always return error. + */ + return 1; +} + +/* all */ +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; +} + +/* all */ +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, adp->va_window_gran, + adp->va_buffer, adp->va_buffer_size); +} + +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"); + } +} + +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 */ |
