diff options
Diffstat (limited to 'sys/dev/fb/vga.c')
| -rw-r--r-- | sys/dev/fb/vga.c | 3041 |
1 files changed, 3041 insertions, 0 deletions
diff --git a/sys/dev/fb/vga.c b/sys/dev/fb/vga.c new file mode 100644 index 0000000..91f99e9 --- /dev/null +++ b/sys/dev/fb/vga.c @@ -0,0 +1,3041 @@ +/*- + * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> + * 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: $ + */ + +#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 <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/conf.h> +#include <sys/proc.h> +#include <sys/fcntl.h> +#include <sys/malloc.h> +#include <sys/fbio.h> + +#include <vm/vm.h> +#include <vm/vm_param.h> +#include <vm/pmap.h> + +#include <machine/md_var.h> +#include <machine/pc/bios.h> + +#include <dev/fb/fbreg.h> +#include <dev/fb/vgareg.h> + +#include <isa/isareg.h> + +#ifndef VGA_DEBUG +#define VGA_DEBUG 0 +#endif + +int +vga_probe_unit(int unit, video_adapter_t *buf, int flags) +{ + video_adapter_t *adp; + video_switch_t *sw; + int error; + + sw = vid_get_switch(VGA_DRIVER_NAME); + if (sw == NULL) + return 0; + error = (*sw->probe)(unit, &adp, NULL, flags); + if (error) + return error; + bcopy(adp, buf, sizeof(*buf)); + return 0; +} + +int +vga_attach_unit(int unit, vga_softc_t *sc, int flags) +{ + video_switch_t *sw; + int error; + + sw = vid_get_switch(VGA_DRIVER_NAME); + if (sw == NULL) + return ENXIO; + + error = (*sw->probe)(unit, &sc->adp, NULL, flags); + if (error) + return error; + return (*sw->init)(unit, sc->adp, flags); +} + +/* cdev driver functions */ + +#ifdef FB_INSTALL_CDEV + +int +vga_open(dev_t dev, vga_softc_t *sc, int flag, int mode, struct proc *p) +{ + if (sc == NULL) + return ENXIO; + if (mode & (O_CREAT | O_APPEND | O_TRUNC)) + return ENODEV; + + return genfbopen(&sc->gensc, sc->adp, flag, mode, p); +} + +int +vga_close(dev_t dev, vga_softc_t *sc, int flag, int mode, struct proc *p) +{ + return genfbclose(&sc->gensc, sc->adp, flag, mode, p); +} + +int +vga_read(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag) +{ + return genfbread(&sc->gensc, sc->adp, uio, flag); +} + +int +vga_write(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag) +{ + return genfbread(&sc->gensc, sc->adp, uio, flag); +} + +int +vga_ioctl(dev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag, + struct proc *p) +{ + return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, p); +} + +int +vga_mmap(dev_t dev, vga_softc_t *sc, vm_offset_t offset, int prot) +{ + return genfbmmap(&sc->gensc, sc->adp, offset, prot); +} + +#endif /* FB_INSTALL_CDEV */ + +/* LOW-LEVEL */ + +#include <machine/clock.h> +#include <machine/pc/vesa.h> + +#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, 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, 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, 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, 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, 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, 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 int vga_error(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_blank_display_t vga_blank_display; +static vi_mmap_t vga_mmap_buf; +static vi_ioctl_t vga_dev_ioctl; +#ifndef VGA_NO_MODE_CHANGE +static vi_clear_t vga_clear; +static vi_fill_rect_t vga_fill_rect; +static vi_bitblt_t vga_bitblt; +#else /* VGA_NO_MODE_CHANGE */ +#define vga_clear (vi_clear_t *)vga_error +#define vga_fill_rect (vi_fill_rect_t *)vga_error +#define vga_bitblt (vi_bitblt_t *)vga_error +#endif +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, + vga_blank_display, + vga_mmap_buf, + vga_dev_ioctl, + vga_clear, + vga_fill_rect, + vga_bitblt, + vga_error, + vga_error, + 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, V_INFO_MM_TEXT }, + { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + /* EGA */ + { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + /* VGA */ + { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1, + MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + /* MDA */ + { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1, + MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + /* EGA */ + { M_ENH_B80x43, 0, 80, 43, 8, 8, 2, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + /* VGA */ + { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1, + MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1, + MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1, + MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + +#ifndef VGA_NO_MODE_CHANGE + +#ifdef VGA_WIDTH90 + { M_VGA_M90x25, 0, 90, 25, 8, 16, 2, 1, + MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_C90x25, V_INFO_COLOR, 90, 25, 8, 16, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_M90x30, 0, 90, 30, 8, 16, 2, 1, + MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_C90x30, V_INFO_COLOR, 90, 30, 8, 16, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_M90x43, 0, 90, 43, 8, 8, 2, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_C90x43, V_INFO_COLOR, 90, 43, 8, 8, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_M90x50, 0, 90, 50, 8, 8, 2, 1, + MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_C90x50, V_INFO_COLOR, 90, 50, 8, 8, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_M90x60, 0, 90, 60, 8, 8, 2, 1, + MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, + { M_VGA_C90x60, V_INFO_COLOR, 90, 60, 8, 8, 4, 1, + CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT }, +#endif /* VGA_WIDTH90 */ + + /* 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, V_INFO_MM_CGA }, + { 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, V_INFO_MM_CGA }, + { 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, V_INFO_MM_CGA }, + /* 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, + V_INFO_MM_PLANAR }, + { 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 , + V_INFO_MM_PLANAR }, + { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, + GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 , + V_INFO_MM_PLANAR }, + { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4, + GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 , + V_INFO_MM_PLANAR }, + { 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 , + V_INFO_MM_PLANAR }, + { 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 , + V_INFO_MM_PLANAR }, + /* 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 , + V_INFO_MM_PLANAR }, + { 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 , + V_INFO_MM_PLANAR }, + { 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, + V_INFO_MM_PACKED, 1 }, + { 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, + V_INFO_MM_PACKED, 1 }, +#endif /* VGA_NO_MODE_CHANGE */ + + { EOT }, +}; + +static int vga_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); +static int set_line_length(video_adapter_t *adp, int pixel); +static int set_display_start(video_adapter_t *adp, int x, int y); +static void filll_io(int val, vm_offset_t d, size_t size); + +#ifndef VGA_NO_MODE_CHANGE +#ifdef VGA_WIDTH90 +static void set_width90(adp_state_t *params); +#endif +#endif /* !VGA_NO_MODE_CHANGE */ + +#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 + +#ifndef VGA_NO_MODE_CHANGE +static void planar_fill(video_adapter_t *adp, int val); +static void packed_fill(video_adapter_t *adp, int val); +static void direct_fill(video_adapter_t *adp, int val); +#ifdef notyet +static void planar_fill_rect(video_adapter_t *adp, int val, int x, int y, + int cx, int cy); +static void packed_fill_rect(video_adapter_t *adp, int val, int x, int y, + int cx, int cy); +static void direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, + int cx, int cy); +static void direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, + int cx, int cy); +static void direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, + int cx, int cy); +#endif /* notyet */ +#endif /* !VGA_NO_MODE_CHANGE */ + +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 (!vga_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 }, +#ifdef VGA_WIDTH90 + { M_VGA_M90x25, M_VGA_M80x25 }, + { M_VGA_C90x25, M_VGA_C80x25 }, + { M_VGA_M90x30, M_VGA_M80x25 }, + { M_VGA_C90x30, M_VGA_C80x25 }, + { M_VGA_M90x43, M_ENH_B80x25 }, + { M_VGA_C90x43, M_ENH_C80x25 }, + { M_VGA_M90x50, M_VGA_M80x25 }, + { M_VGA_C90x50, M_VGA_C80x25 }, + { M_VGA_M90x60, M_VGA_M80x25 }, + { M_VGA_C90x60, M_VGA_C80x25 }, +#endif + { 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) +{ + vm_offset_t buf; + u_int16_t v; +#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) + u_int32_t p; +#endif + + buf = BIOS_PADDRTOVADDR(adp->va_window); + v = readw(buf); + writew(buf, 0xA55A); + if (readw(buf) != 0xA55A) + return ENXIO; + 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; + adp->va_window_orig = 0; + /* XXX */ + adp->va_buffer = 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; + } + adp->va_disp_start.x = 0; + adp->va_disp_start.y = 0; + 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 regs */ + {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; +#if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE) + u_char *mp; +#endif + int i; + + /* do this test only once */ + if (vga_init_done) + return biosadapters; + vga_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 notyet + /* + * 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); + info.vi_flags &= ~V_INFO_LINEAR; /* XXX */ + 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); + info.vi_flags &= ~V_INFO_LINEAR; /* XXX */ + 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; +} + +/* set the scan line length in pixel */ +static int +set_line_length(video_adapter_t *adp, int pixel) +{ + u_char *mp; + int ppw; /* pixels per word */ + int bpl; /* bytes per line */ + int count; + + if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA)) + return ENODEV; + mp = get_mode_param(adp->va_mode); + if (mp == NULL) + return EINVAL; + + switch (adp->va_info.vi_mem_model) { + case V_INFO_MM_PLANAR: + ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes); + count = (pixel + ppw - 1)/ppw/2; + bpl = ((pixel + ppw - 1)/ppw/2)*4; + break; + case V_INFO_MM_PACKED: + count = (pixel + 7)/8; + bpl = ((pixel + 7)/8)*8; + break; + case V_INFO_MM_TEXT: + count = (pixel + 7)/8; /* columns */ + bpl = (pixel + 7)/8; /* columns */ + break; + default: + return ENODEV; + } + + if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */ + count *= 2; /* byte mode */ + outb(adp->va_crtc_addr, 0x13); + outb(adp->va_crtc_addr + 1, count); + adp->va_line_width = bpl; + + return 0; +} + +static int +set_display_start(video_adapter_t *adp, int x, int y) +{ + int off; /* byte offset (graphics mode)/word offset (text mode) */ + int poff; /* pixel offset */ + int roff; /* row offset */ + int ppb; /* pixels per byte */ + + if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA)) + x &= ~7; + if (adp->va_info.vi_flags & V_INFO_GRAPHICS) { + ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes); + off = y*adp->va_line_width + x/ppb; + roff = 0; + poff = x%ppb; + } else { + if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) { + outb(TSIDX, 1); + if (inb(TSREG) & 1) + ppb = 9; + else + ppb = 8; + } else { + ppb = 8; + } + off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb; + roff = y%adp->va_info.vi_cheight; + /* FIXME: is this correct? XXX */ + if (ppb == 8) + poff = x%ppb; + else + poff = (x + 8)%ppb; + } + + /* start address */ + outb(adp->va_crtc_addr, 0xc); /* high */ + outb(adp->va_crtc_addr + 1, off >> 8); + outb(adp->va_crtc_addr, 0xd); /* low */ + outb(adp->va_crtc_addr + 1, off & 0xff); + + /* horizontal pel pan */ + if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) { + inb(adp->va_crtc_addr + 6); + outb(ATC, 0x13 | 0x20); + outb(ATC, poff); + inb(adp->va_crtc_addr + 6); + outb(ATC, 0x20); + } + + /* preset raw scan */ + outb(adp->va_crtc_addr, 8); + outb(adp->va_crtc_addr + 1, roff); + + adp->va_disp_start.x = x; + adp->va_disp_start.y = y; + return 0; +} + +#ifdef __i386__ /* XXX */ +static void +fill(int val, void *d, size_t size) +{ + u_char *p = d; + + while (size-- > 0) + *p++ = val; +} +#endif /* __i386__ */ + +static void +filll_io(int val, vm_offset_t d, size_t size) +{ + while (size-- > 0) { + writel(d, val); + d += sizeof(u_int32_t); + } +} + +/* entry points */ + +static int +vga_nop(void) +{ + return 0; +} + +static int +vga_error(void) +{ + return ENODEV; +} + +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 (!vga_init_done) + return ENXIO; + + 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 EINVAL; + } 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 EINVAL; + } + + 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]; + /* XXX */ + info->vi_buffer_size = info->vi_window_size*info->vi_planes; + return 0; + } + } + return EINVAL; +} + +/* + * 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 (!vga_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 + */ + +#ifndef VGA_NO_MODE_CHANGE +#ifdef VGA_WIDTH90 +static void +set_width90(adp_state_t *params) +{ + /* + * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com) + * and alexv@sui.gda.itesm.mx. + */ + params->regs[5] |= 1; /* toggle 8 pixel wide fonts */ + params->regs[10+0x0] = 0x6b; + params->regs[10+0x1] = 0x59; + params->regs[10+0x2] = 0x5a; + params->regs[10+0x3] = 0x8e; + params->regs[10+0x4] = 0x5e; + params->regs[10+0x5] = 0x8a; + params->regs[10+0x13] = 45; + params->regs[35+0x13] = 0; +} +#endif /* VGA_WIDTH90 */ +#endif /* !VGA_NO_MODE_CHANGE */ + +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, ENODEV); + + mode = map_gen_mode_num(adp->va_type, + adp->va_flags & V_ADP_COLOR, mode); + if (vga_get_info(adp, mode, &info)) + return EINVAL; + +#if VGA_DEBUG > 1 + printf("vga_set_mode(): setting mode %d\n", mode); +#endif + + params.sig = V_STATE_SIG; + bcopy(get_mode_param(mode), params.regs, sizeof(params.regs)); + + switch (mode) { +#ifdef VGA_WIDTH90 + case M_VGA_C90x60: case M_VGA_M90x60: + set_width90(¶ms); + /* FALL THROUGH */ +#endif + case M_VGA_C80x60: case M_VGA_M80x60: + params.regs[2] = 0x08; + params.regs[19] = 0x47; + goto special_480l; + +#ifdef VGA_WIDTH90 + case M_VGA_C90x30: case M_VGA_M90x30: + set_width90(¶ms); + /* FALL THROUGH */ +#endif + 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; + +#ifdef VGA_WIDTH90 + case M_VGA_C90x43: case M_VGA_M90x43: + set_width90(¶ms); + /* FALL THROUGH */ +#endif + case M_ENH_C80x43: case M_ENH_B80x43: + params.regs[28] = 87; + goto special_80x50; + +#ifdef VGA_WIDTH90 + case M_VGA_C90x50: case M_VGA_M90x50: + set_width90(¶ms); + /* FALL THROUGH */ +#endif + case M_VGA_C80x50: case M_VGA_M80x50: +special_80x50: + params.regs[2] = 8; + params.regs[19] = 7; + goto setup_mode; + +#ifdef VGA_WIDTH90 + case M_VGA_C90x25: case M_VGA_M90x25: + set_width90(¶ms); + /* FALL THROUGH */ +#endif + 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 EINVAL; + } + + adp->va_mode = mode; + info.vi_flags &= ~V_INFO_LINEAR; /* XXX */ + 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 ENODEV; +#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, ENODEV); + + 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 EINVAL; + 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(segment + ch*32, data, fontsize*count); + } else { + for (c = ch; count > 0; ++c, --count) { + bcopy_fromio(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 ENODEV; +#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, ENODEV); + + 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 EINVAL; + 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, segment + ch*32, fontsize*count); + } else { + for (c = ch; count > 0; ++c, --count) { + bcopy_toio(data, 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 ENODEV; +#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, ENODEV); + if (page < 0 || page >= 8) + return EINVAL; + + s = splhigh(); + outb(TSIDX, 0x03); outb(TSREG, cg[page]); + splx(s); + + return 0; +#else /* VGA_NO_FONT_LOADING */ + return ENODEV; +#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, ENODEV); + + /* + * 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; +} + +static int +vga_save_palette2(video_adapter_t *adp, int base, int count, + u_char *r, u_char *g, u_char *b) +{ + int i; + + prologue(adp, V_ADP_PALETTE, ENODEV); + + outb(PALRADR, base); + for (i = 0; i < count; ++i) { + r[i] = inb(PALDATA) << 2; + g[i] = inb(PALDATA) << 2; + b[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, ENODEV); + + 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; +} + +static int +vga_load_palette2(video_adapter_t *adp, int base, int count, + u_char *r, u_char *g, u_char *b) +{ + int i; + + prologue(adp, V_ADP_PALETTE, ENODEV); + + outb(PIXMASK, 0xff); /* no pixelmask */ + outb(PALWADR, base); + for (i = 0; i < count; ++i) { + outb(PALDATA, r[i] >> 2); + outb(PALDATA, g[i] >> 2); + outb(PALDATA, b[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, ENODEV); + + 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, ENODEV); + if (size < sizeof(adp_state_t)) + return EINVAL; + } + + ((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, ENODEV); + if (((adp_state_t *)p)->sig != V_STATE_SIG) + return EINVAL; + + buf = ((adp_state_t *)p)->regs; + crtc_addr = adp->va_crtc_addr; + +#if VGA_DEBUG > 1 + dump_buffer(buf, V_MODE_PARAM_SIZE); +#endif + + 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 ENODEV; +} + +/* + * 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 (!vga_init_done) + return ENXIO; + + if (adp->va_info.vi_flags & V_INFO_GRAPHICS) + return ENODEV; + + 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 (!vga_init_done) + return ENXIO; + + if ((col == -1) && (row == -1)) { + off = -1; + } else { + if (adp->va_info.vi_flags & V_INFO_GRAPHICS) + return ENODEV; + 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 (!vga_init_done) + return ENXIO; + + 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; +} + +/* + * blank_display() + * Put the display in power save/power off mode. + * + * all adapters + */ +static int +vga_blank_display(video_adapter_t *adp, int mode) +{ + u_char val; + int s; + + s = splhigh(); + switch (adp->va_type) { + case KD_VGA: + switch (mode) { + case V_DISPLAY_SUSPEND: + case V_DISPLAY_STAND_BY: + outb(TSIDX, 0x01); + val = inb(TSREG); + outb(TSIDX, 0x01); + outb(TSREG, val | 0x20); + outb(adp->va_crtc_addr, 0x17); + val = inb(adp->va_crtc_addr + 1); + outb(adp->va_crtc_addr + 1, val & ~0x80); + break; + case V_DISPLAY_BLANK: + outb(TSIDX, 0x01); + val = inb(TSREG); + outb(TSIDX, 0x01); + outb(TSREG, val | 0x20); + break; + case V_DISPLAY_ON: + outb(TSIDX, 0x01); + val = inb(TSREG); + outb(TSIDX, 0x01); + outb(TSREG, val & 0xDF); + outb(adp->va_crtc_addr, 0x17); + val = inb(adp->va_crtc_addr + 1); + outb(adp->va_crtc_addr + 1, val | 0x80); + break; + } + break; + + case KD_EGA: + /* no support yet */ + return ENODEV; + + case KD_CGA: + switch (mode) { + case V_DISPLAY_SUSPEND: + case V_DISPLAY_STAND_BY: + case V_DISPLAY_BLANK: + outb(adp->va_crtc_addr + 4, 0x25); + break; + case V_DISPLAY_ON: + outb(adp->va_crtc_addr + 4, 0x2d); + break; + } + break; + + case KD_MONO: + case KD_HERCULES: + switch (mode) { + case V_DISPLAY_SUSPEND: + case V_DISPLAY_STAND_BY: + case V_DISPLAY_BLANK: + outb(adp->va_crtc_addr + 4, 0x21); + break; + case V_DISPLAY_ON: + outb(adp->va_crtc_addr + 4, 0x29); + break; + } + break; + default: + break; + } + splx(s); + + return 0; +} + +/* + * mmap(): + * Mmap frame buffer. + * + * all adapters + */ +static int +vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot) +{ + if (adp->va_info.vi_flags & V_INFO_LINEAR) + return -1; + +#if VGA_DEBUG > 0 + printf("vga_mmap_buf(): window:0x%x, offset:0x%x\n", + adp->va_info.vi_window, offset); +#endif + + /* XXX: is this correct? */ + if (offset > adp->va_window_size - PAGE_SIZE) + return -1; + +#ifdef __i386__ + return i386_btop(adp->va_info.vi_window + offset); +#endif +#ifdef __alpha__ + return alpha_btop(adp->va_info.vi_window + offset); +#endif +} + +#ifndef VGA_NO_MODE_CHANGE + +static void +planar_fill(video_adapter_t *adp, int val) +{ + int length; + int at; /* position in the frame buffer */ + int l; + + outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */ + outw(GDCIDX, 0x0003); /* data rotate/function select */ + outw(GDCIDX, 0x0f01); /* set/reset enable */ + outw(GDCIDX, 0xff08); /* bit mask */ + outw(GDCIDX, (val << 8) | 0x00); /* set/reset */ + at = 0; + length = adp->va_line_width*adp->va_info.vi_height; + while (length > 0) { + l = imin(length, adp->va_window_size); + (*vidsw[adp->va_index]->set_win_org)(adp, at); + bzero_io(adp->va_window, l); + length -= l; + at += l; + } + outw(GDCIDX, 0x0000); /* set/reset */ + outw(GDCIDX, 0x0001); /* set/reset enable */ +} + +static void +packed_fill(video_adapter_t *adp, int val) +{ + int length; + int at; /* position in the frame buffer */ + int l; + + at = 0; + length = adp->va_line_width*adp->va_info.vi_height; + while (length > 0) { + l = imin(length, adp->va_window_size); + (*vidsw[adp->va_index]->set_win_org)(adp, at); + fill_io(val, adp->va_window, l); + length -= l; + at += l; + } +} + +static void +direct_fill(video_adapter_t *adp, int val) +{ + int length; + int at; /* position in the frame buffer */ + int l; + + at = 0; + length = adp->va_line_width*adp->va_info.vi_height; + while (length > 0) { + l = imin(length, adp->va_window_size); + (*vidsw[adp->va_index]->set_win_org)(adp, at); + switch (adp->va_info.vi_pixel_size) { + case sizeof(u_int16_t): + fillw_io(val, adp->va_window, l/sizeof(u_int16_t)); + break; + case 3: + /* FIXME */ + break; + case sizeof(u_int32_t): + filll_io(val, adp->va_window, l/sizeof(u_int32_t)); + break; + } + length -= l; + at += l; + } +} + +static int +vga_clear(video_adapter_t *adp) +{ + switch (adp->va_info.vi_mem_model) { + case V_INFO_MM_TEXT: + /* do nothing? XXX */ + break; + case V_INFO_MM_PLANAR: + planar_fill(adp, 0); + break; + case V_INFO_MM_PACKED: + packed_fill(adp, 0); + break; + case V_INFO_MM_DIRECT: + direct_fill(adp, 0); + break; + } + return 0; +} + +#ifdef notyet +static void +planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) +{ + int banksize; + int bank; + int pos; + int offset; /* offset within window */ + int bx; + int l; + + outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */ + outw(GDCIDX, 0x0003); /* data rotate/function select */ + outw(GDCIDX, 0x0f01); /* set/reset enable */ + outw(GDCIDX, 0xff08); /* bit mask */ + outw(GDCIDX, (val << 8) | 0x00); /* set/reset */ + + banksize = adp->va_window_size; + bank = -1; + while (cy > 0) { + pos = adp->va_line_width*y + x/8; + if (bank != pos/banksize) { + (*vidsw[adp->va_index]->set_win_org)(adp, pos); + bank = pos/banksize; + } + offset = pos%banksize; + bx = (x + cx)/8 - x/8; + if (x % 8) { + outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08); + writeb(adp->va_window + offset, 0); + ++offset; + --bx; + if (offset >= banksize) { + offset = 0; + ++bank; /* next bank */ + (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); + } + outw(GDCIDX, 0xff08); /* bit mask */ + } + while (bx > 0) { + l = imin(bx, banksize); + bzero_io(adp->va_window + offset, l); + offset += l; + bx -= l; + if (offset >= banksize) { + offset = 0; + ++bank; /* next bank */ + (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); + } + } + if ((x + cx) % 8) { + outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08); + writeb(adp->va_window + offset, 0); + ++offset; + if (offset >= banksize) { + offset = 0; + ++bank; /* next bank */ + (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); + } + outw(GDCIDX, 0xff08); /* bit mask */ + } + ++y; + --cy; + } + + outw(GDCIDX, 0xff08); /* bit mask */ + outw(GDCIDX, 0x0000); /* set/reset */ + outw(GDCIDX, 0x0001); /* set/reset enable */ +} + +static void +packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) +{ + int banksize; + int bank; + int pos; + int offset; /* offset within window */ + int end; + + banksize = adp->va_window_size; + bank = -1; + cx *= adp->va_info.vi_pixel_size; + while (cy > 0) { + pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size; + if (bank != pos/banksize) { + (*vidsw[adp->va_index]->set_win_org)(adp, pos); + bank = pos/banksize; + } + offset = pos%banksize; + end = imin(offset + cx, banksize); + fill_io(val, adp->va_window + offset, + (end - offset)/adp->va_info.vi_pixel_size); + /* the line may cross the window boundary */ + if (offset + cx > banksize) { + ++bank; /* next bank */ + (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); + end = offset + cx - banksize; + fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size); + } + ++y; + --cy; + } +} + +static void +direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy) +{ + int banksize; + int bank; + int pos; + int offset; /* offset within window */ + int end; + + /* + * XXX: the function assumes that banksize is a muliple of + * sizeof(u_int16_t). + */ + banksize = adp->va_window_size; + bank = -1; + cx *= sizeof(u_int16_t); + while (cy > 0) { + pos = adp->va_line_width*y + x*sizeof(u_int16_t); + if (bank != pos/banksize) { + (*vidsw[adp->va_index]->set_win_org)(adp, pos); + bank = pos/banksize; + } + offset = pos%banksize; + end = imin(offset + cx, banksize); + fillw_io(val, adp->va_window + offset, + (end - offset)/sizeof(u_int16_t)); + /* the line may cross the window boundary */ + if (offset + cx > banksize) { + ++bank; /* next bank */ + (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); + end = offset + cx - banksize; + fillw_io(val, adp->va_window, end/sizeof(u_int16_t)); + } + ++y; + --cy; + } +} + +static void +direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy) +{ + int banksize; + int bank; + int pos; + int offset; /* offset within window */ + int end; + int i; + int j; + u_int8_t b[3]; + + b[0] = val & 0x0000ff; + b[1] = (val >> 8) & 0x0000ff; + b[2] = (val >> 16) & 0x0000ff; + banksize = adp->va_window_size; + bank = -1; + cx *= 3; + while (cy > 0) { + pos = adp->va_line_width*y + x*3; + if (bank != pos/banksize) { + (*vidsw[adp->va_index]->set_win_org)(adp, pos); + bank = pos/banksize; + } + offset = pos%banksize; + end = imin(offset + cx, banksize); + for (i = 0, j = offset; j < end; i = (++i)%3, ++j) { + writeb(adp->va_window + j, b[i]); + } + /* the line may cross the window boundary */ + if (offset + cx >= banksize) { + ++bank; /* next bank */ + (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); + j = 0; + end = offset + cx - banksize; + for (; j < end; i = (++i)%3, ++j) { + writeb(adp->va_window + j, b[i]); + } + } + ++y; + --cy; + } +} + +static void +direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy) +{ + int banksize; + int bank; + int pos; + int offset; /* offset within window */ + int end; + + /* + * XXX: the function assumes that banksize is a muliple of + * sizeof(u_int32_t). + */ + banksize = adp->va_window_size; + bank = -1; + cx *= sizeof(u_int32_t); + while (cy > 0) { + pos = adp->va_line_width*y + x*sizeof(u_int32_t); + if (bank != pos/banksize) { + (*vidsw[adp->va_index]->set_win_org)(adp, pos); + bank = pos/banksize; + } + offset = pos%banksize; + end = imin(offset + cx, banksize); + filll_io(val, adp->va_window + offset, + (end - offset)/sizeof(u_int32_t)); + /* the line may cross the window boundary */ + if (offset + cx > banksize) { + ++bank; /* next bank */ + (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize); + end = offset + cx - banksize; + filll_io(val, adp->va_window, end/sizeof(u_int32_t)); + } + ++y; + --cy; + } +} + +static int +vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) +{ + switch (adp->va_info.vi_mem_model) { + case V_INFO_MM_TEXT: + /* do nothing? XXX */ + break; + case V_INFO_MM_PLANAR: + planar_fill_rect(adp, val, x, y, cx, cy); + break; + case V_INFO_MM_PACKED: + packed_fill_rect(adp, val, x, y, cx, cy); + break; + case V_INFO_MM_DIRECT: + switch (adp->va_info.vi_pixel_size) { + case sizeof(u_int16_t): + direct_fill_rect16(adp, val, x, y, cx, cy); + break; + case 3: + direct_fill_rect24(adp, val, x, y, cx, cy); + break; + case sizeof(u_int32_t): + direct_fill_rect32(adp, val, x, y, cx, cy); + break; + } + break; + } + return 0; +} +#else /* !notyet */ +static int +vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) +{ + return ENODEV; +} +#endif /* notyet */ + +static int +vga_bitblt(video_adapter_t *adp,...) +{ + /* FIXME */ + return ENODEV; +} + +#endif /* !VGA_NO_MODE_CHANGE */ + +static int +get_palette(video_adapter_t *adp, int base, int count, + u_char *red, u_char *green, u_char *blue, u_char *trans) +{ + u_char *r; + u_char *g; + u_char *b; + + if ((base < 0) || (base >= 256) || (base + count > 256)) + return EINVAL; + + r = malloc(count*3, M_DEVBUF, M_WAITOK); + g = r + count; + b = g + count; + if (vga_save_palette2(adp, base, count, r, g, b)) + return ENODEV; + copyout(r, red, count); + copyout(g, green, count); + copyout(b, blue, count); + if (trans != NULL) { + bzero(r, count); + copyout(r, trans, count); + } + free(r, M_DEVBUF); + + return 0; +} + +static int +set_palette(video_adapter_t *adp, int base, int count, + u_char *red, u_char *green, u_char *blue, u_char *trans) +{ + u_char *r; + u_char *g; + u_char *b; + int err; + + if ((base < 0) || (base >= 256) || (base + count > 256)) + return EINVAL; + + r = malloc(count*3, M_DEVBUF, M_WAITOK); + g = r + count; + b = g + count; + copyin(red, r, count); + copyin(green, g, count); + copyin(blue, b, count); + err = vga_load_palette2(adp, base, count, r, g, b); + free(r, M_DEVBUF); + + return (err ? ENODEV : 0); +} + +static int +vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg) +{ + switch (cmd) { + case FBIO_GETWINORG: /* get frame buffer window origin */ + *(u_int *)arg = 0; + return 0; + + case FBIO_SETWINORG: /* set frame buffer window origin */ + return ENODEV; + + case FBIO_SETDISPSTART: /* set display start address */ + return (set_display_start(adp, + ((video_display_start_t *)arg)->x, + ((video_display_start_t *)arg)->y) + ? ENODEV : 0); + + case FBIO_SETLINEWIDTH: /* set scan line length in pixel */ + return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0); + + case FBIO_GETPALETTE: /* get color palette */ + return get_palette(adp, ((video_color_palette_t *)arg)->index, + ((video_color_palette_t *)arg)->count, + ((video_color_palette_t *)arg)->red, + ((video_color_palette_t *)arg)->green, + ((video_color_palette_t *)arg)->blue, + ((video_color_palette_t *)arg)->transparent); + + case FBIO_SETPALETTE: /* set color palette */ + return set_palette(adp, ((video_color_palette_t *)arg)->index, + ((video_color_palette_t *)arg)->count, + ((video_color_palette_t *)arg)->red, + ((video_color_palette_t *)arg)->green, + ((video_color_palette_t *)arg)->blue, + ((video_color_palette_t *)arg)->transparent); + + case FBIOGTYPE: /* get frame buffer type info. */ + ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type); + ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height; + ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width; + ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth; + if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8)) + ((struct fbtype *)arg)->fb_cmsize = 0; + else + ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth; + ((struct fbtype *)arg)->fb_size = adp->va_buffer_size; + return 0; + + case FBIOGETCMAP: /* get color palette */ + return get_palette(adp, ((struct fbcmap *)arg)->index, + ((struct fbcmap *)arg)->count, + ((struct fbcmap *)arg)->red, + ((struct fbcmap *)arg)->green, + ((struct fbcmap *)arg)->blue, NULL); + + case FBIOPUTCMAP: /* set color palette */ + return set_palette(adp, ((struct fbcmap *)arg)->index, + ((struct fbcmap *)arg)->count, + ((struct fbcmap *)arg)->red, + ((struct fbcmap *)arg)->green, + ((struct fbcmap *)arg)->blue, NULL); + + default: + return fb_commonioctl(adp, cmd, arg); + } +} + +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) +{ + u_char *mp; +#if FB_DEBUG > 1 + video_info_t info; + int i; +#endif + + if (!vga_init_done) + return ENXIO; + +#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); + printf("vga: rows_offset:%d\n", rows_offset); +#endif +#endif /* FB_DEBUG > 1 */ + + fb_dump_adp_info(VGA_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(VGA_DRIVER_NAME, adp, &bios_vmode[i], level); + } + } else { + vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */ + fb_dump_mode_info(VGA_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 */ |
