1050 lines
25 KiB
C
1050 lines
25 KiB
C
/*-
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* Copyright (c) 1998 Kazutaka YOKOTA and Michael Smith
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer as
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* the first lines of this file unmodified.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: vesa.c,v 1.12 1999/01/11 03:18:24 yokota Exp $
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*/
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#include "vga.h"
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#include "opt_vga.h"
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#include "opt_vesa.h"
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#include "opt_vm86.h"
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#include "opt_fb.h"
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#ifdef VGA_NO_MODE_CHANGE
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#undef VESA
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#endif
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#if (NVGA > 0 && defined(VESA) && defined(VM86)) || defined(KLD_MODULE)
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/console.h>
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#include <machine/md_var.h>
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#include <machine/vm86.h>
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#include <machine/pc/bios.h>
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#include <machine/pc/vesa.h>
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#include <dev/fb/fbreg.h>
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#include <dev/fb/vgareg.h>
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#ifndef __i386__
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#include <isa/isareg.h>
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#else
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#include <i386/isa/isa.h>
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#endif
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#ifndef VESA_DEBUG
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#define VESA_DEBUG 0
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#endif
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/* VESA video adapter state buffer stub */
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struct adp_state {
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int sig;
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#define V_STATE_SIG 0x61736576
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u_char regs[1];
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};
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typedef struct adp_state adp_state_t;
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/* VESA video adapter */
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static video_adapter_t *vesa_adp = NULL;
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static int vesa_state_buf_size = 0;
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#if 0
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static void *vesa_state_buf = NULL;
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#endif
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/* VESA functions */
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static int vesa_nop(void);
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static vi_probe_t vesa_probe;
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static vi_init_t vesa_init;
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static vi_get_info_t vesa_get_info;
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static vi_query_mode_t vesa_query_mode;
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static vi_set_mode_t vesa_set_mode;
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static vi_save_font_t vesa_save_font;
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static vi_load_font_t vesa_load_font;
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static vi_show_font_t vesa_show_font;
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static vi_save_palette_t vesa_save_palette;
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static vi_load_palette_t vesa_load_palette;
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static vi_set_border_t vesa_set_border;
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static vi_save_state_t vesa_save_state;
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static vi_load_state_t vesa_load_state;
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static vi_set_win_org_t vesa_set_origin;
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static vi_read_hw_cursor_t vesa_read_hw_cursor;
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static vi_set_hw_cursor_t vesa_set_hw_cursor;
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static vi_set_hw_cursor_shape_t vesa_set_hw_cursor_shape;
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static vi_mmap_t vesa_mmap;
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static vi_diag_t vesa_diag;
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static video_switch_t vesavidsw = {
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vesa_probe,
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vesa_init,
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vesa_get_info,
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vesa_query_mode,
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vesa_set_mode,
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vesa_save_font,
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vesa_load_font,
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vesa_show_font,
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vesa_save_palette,
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vesa_load_palette,
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vesa_set_border,
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vesa_save_state,
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vesa_load_state,
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vesa_set_origin,
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vesa_read_hw_cursor,
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vesa_set_hw_cursor,
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vesa_set_hw_cursor_shape,
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(vi_blank_display_t *)vesa_nop,
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vesa_mmap,
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vesa_diag,
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};
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static video_switch_t *prevvidsw;
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/* VESA BIOS video modes */
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#define VESA_MAXMODES 64
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#define EOT (-1)
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#define NA (-2)
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static video_info_t vesa_vmode[VESA_MAXMODES + 1] = {
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{ EOT, },
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};
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static int vesa_init_done = FALSE;
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static int has_vesa_bios = FALSE;
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static struct vesa_info *vesa_adp_info = NULL;
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static u_int16_t *vesa_vmodetab = NULL;
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static char *vesa_oemstr = NULL;
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static char *vesa_venderstr = NULL;
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static char *vesa_prodstr = NULL;
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static char *vesa_revstr = NULL;
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/* local macros and functions */
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#define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
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static int int10_set_mode(int mode);
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static int vesa_bios_get_mode(int mode, struct vesa_mode *vmode);
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static int vesa_bios_set_mode(int mode);
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static int vesa_bios_set_dac(int bits);
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static int vesa_bios_save_palette(int start, int colors, u_char *palette);
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static int vesa_bios_load_palette(int start, int colors, u_char *palette);
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#define STATE_SIZE 0
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#define STATE_SAVE 1
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#define STATE_LOAD 2
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#define STATE_HW (1<<0)
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#define STATE_DATA (1<<1)
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#define STATE_DAC (1<<2)
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#define STATE_REG (1<<3)
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#define STATE_MOST (STATE_HW | STATE_DATA | STATE_REG)
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#define STATE_ALL (STATE_HW | STATE_DATA | STATE_DAC | STATE_REG)
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static int vesa_bios_state_buf_size(void);
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static int vesa_bios_save_restore(int code, void *p, size_t size);
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static int vesa_map_gen_mode_num(int type, int color, int mode);
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static int vesa_translate_flags(u_int16_t vflags);
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static void *vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off,
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u_char *buf);
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static int vesa_bios_init(void);
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static void vesa_clear_modes(video_info_t *info, int color);
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static void
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dump_buffer(u_char *buf, size_t len)
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{
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int i;
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for(i = 0; i < len;) {
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printf("%02x ", buf[i]);
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if ((++i % 16) == 0)
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printf("\n");
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}
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}
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/* INT 10 BIOS calls */
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static int
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int10_set_mode(int mode)
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{
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struct vm86frame vmf;
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bzero(&vmf, sizeof(vmf));
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vmf.vmf_eax = 0x0000 | mode;
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vm86_intcall(0x10, &vmf);
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return 0;
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}
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/* VESA BIOS calls */
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static int
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vesa_bios_get_mode(int mode, struct vesa_mode *vmode)
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{
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struct vm86frame vmf;
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u_char buf[256];
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int err;
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bzero(&vmf, sizeof(vmf));
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bzero(buf, sizeof(buf));
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vmf.vmf_eax = 0x4f01;
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vmf.vmf_ecx = mode;
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err = vm86_datacall(0x10, &vmf, (char *)buf, sizeof(buf),
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&vmf.vmf_es, &vmf.vmf_di);
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if ((err != 0) || (vmf.vmf_eax != 0x4f))
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return 1;
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bcopy(buf, vmode, sizeof(*vmode));
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return 0;
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}
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static int
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vesa_bios_set_mode(int mode)
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{
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struct vm86frame vmf;
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int err;
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bzero(&vmf, sizeof(vmf));
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vmf.vmf_eax = 0x4f02;
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vmf.vmf_ebx = mode;
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err = vm86_intcall(0x10, &vmf);
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return ((err != 0) || (vmf.vmf_eax != 0x4f));
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}
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static int
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vesa_bios_set_dac(int bits)
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{
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struct vm86frame vmf;
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int err;
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bzero(&vmf, sizeof(vmf));
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vmf.vmf_eax = 0x4f08;
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vmf.vmf_ebx = (bits << 8);
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err = vm86_intcall(0x10, &vmf);
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return ((err != 0) || (vmf.vmf_eax != 0x4f));
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}
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static int
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vesa_bios_save_palette(int start, int colors, u_char *palette)
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{
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struct vm86frame vmf;
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u_char *p;
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int err;
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int i;
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p = malloc(colors*4, M_DEVBUF, M_WAITOK);
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bzero(&vmf, sizeof(vmf));
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vmf.vmf_eax = 0x4f09;
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vmf.vmf_ebx = 1; /* get primary palette data */
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vmf.vmf_ecx = colors;
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vmf.vmf_edx = start;
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err = vm86_datacall(0x10, &vmf, p, colors*4, &vmf.vmf_es, &vmf.vmf_di);
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if ((err != 0) || (vmf.vmf_eax != 0x4f)) {
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free(p, M_DEVBUF);
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return 1;
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}
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for (i = 0; i < colors; ++i) {
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palette[i*3] = p[i*4 + 1];
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palette[i*3 + 1] = p[i*4 + 2];
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palette[i*3 + 2] = p[i*4 + 3];
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}
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free(p, M_DEVBUF);
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return 0;
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}
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static int
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vesa_bios_load_palette(int start, int colors, u_char *palette)
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{
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struct vm86frame vmf;
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u_char *p;
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int err;
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int i;
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p = malloc(colors*4, M_DEVBUF, M_WAITOK);
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for (i = 0; i < colors; ++i) {
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p[i*4] = 0;
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p[i*4 + 1] = palette[i*3];
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p[i*4 + 2] = palette[i*3 + 1];
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p[i*4 + 3] = palette[i*3 + 2];
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}
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bzero(&vmf, sizeof(vmf));
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vmf.vmf_eax = 0x4f09;
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vmf.vmf_ebx = 0; /* set primary palette data */
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vmf.vmf_ecx = colors;
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vmf.vmf_edx = start;
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err = vm86_datacall(0x10, &vmf, p, colors*4, &vmf.vmf_es, &vmf.vmf_di);
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free(p, M_DEVBUF);
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return ((err != 0) || (vmf.vmf_eax != 0x4f));
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}
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static int
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vesa_bios_state_buf_size(void)
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{
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struct vm86frame vmf;
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int err;
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bzero(&vmf, sizeof(vmf));
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vmf.vmf_eax = 0x4f04;
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vmf.vmf_ecx = STATE_MOST;
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vmf.vmf_edx = STATE_SIZE;
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err = vm86_intcall(0x10, &vmf);
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if ((err != 0) || (vmf.vmf_eax != 0x4f))
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return 0;
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return vmf.vmf_ebx*64;
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}
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static int
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vesa_bios_save_restore(int code, void *p, size_t size)
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{
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struct vm86frame vmf;
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int err;
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bzero(&vmf, sizeof(vmf));
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vmf.vmf_eax = 0x4f04;
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vmf.vmf_ecx = STATE_MOST;
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vmf.vmf_edx = code; /* STATE_SAVE/STATE_LOAD */
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err = vm86_datacall(0x10, &vmf, (char *)p, size,
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&vmf.vmf_es, &vmf.vmf_bx);
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return ((err != 0) || (vmf.vmf_eax != 0x4f));
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}
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/* map a generic video mode to a known mode */
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static int
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vesa_map_gen_mode_num(int type, int color, int mode)
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{
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static struct {
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int from;
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int to;
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} mode_map[] = {
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{ M_TEXT_132x25, M_VESA_C132x25 },
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{ M_TEXT_132x43, M_VESA_C132x43 },
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{ M_TEXT_132x50, M_VESA_C132x50 },
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{ M_TEXT_132x60, M_VESA_C132x60 },
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};
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int i;
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for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
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if (mode_map[i].from == mode)
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return mode_map[i].to;
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}
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return mode;
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}
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static int
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vesa_translate_flags(u_int16_t vflags)
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{
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static struct {
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u_int16_t mask;
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int set;
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int reset;
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} ftable[] = {
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{ V_MODECOLOR, V_INFO_COLOR, 0 },
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{ V_MODEGRAPHICS, V_INFO_GRAPHICS, 0 },
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{ V_MODELFB, V_INFO_LINEAR, 0 },
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};
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int flags;
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int i;
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for (flags = 0, i = 0; i < sizeof(ftable)/sizeof(ftable[0]); ++i) {
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flags |= (vflags & ftable[i].mask) ?
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ftable[i].set : ftable[i].reset;
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}
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return flags;
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}
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static void
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*vesa_fix_ptr(u_int32_t p, u_int16_t seg, u_int16_t off, u_char *buf)
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{
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if (p == 0)
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return NULL;
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if (((p >> 16) == seg) && ((p & 0xffff) >= off))
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return (void *)(buf + ((p & 0xffff) - off));
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else {
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p = BIOS_SADDRTOLADDR(p);
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return (void *)BIOS_PADDRTOVADDR(p);
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}
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}
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static int
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vesa_bios_init(void)
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{
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static u_char buf[512];
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struct vm86frame vmf;
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struct vesa_mode vmode;
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int modes;
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int err;
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int i;
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if (vesa_init_done)
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return 0;
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has_vesa_bios = FALSE;
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vesa_adp_info = NULL;
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vesa_vmode[0].vi_mode = EOT;
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bzero(&vmf, sizeof(vmf)); /* paranoia */
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bzero(buf, sizeof(buf));
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bcopy("VBE2", buf, 4); /* try for VBE2 data */
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vmf.vmf_eax = 0x4f00;
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err = vm86_datacall(0x10, &vmf, (char *)buf, sizeof(buf),
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&vmf.vmf_es, &vmf.vmf_di);
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if ((err != 0) || (vmf.vmf_eax != 0x4f) || bcmp("VESA", buf, 4))
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return 1;
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vesa_adp_info = (struct vesa_info *)buf;
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if (bootverbose) {
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printf("VESA: information block\n");
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dump_buffer(buf, 64);
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}
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if (vesa_adp_info->v_flags & V_NONVGA)
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return 1;
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/* fix string ptrs */
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vesa_oemstr = (char *)vesa_fix_ptr(vesa_adp_info->v_oemstr,
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vmf.vmf_es, vmf.vmf_di, buf);
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if (vesa_adp_info->v_version >= 0x0200) {
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vesa_venderstr =
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(char *)vesa_fix_ptr(vesa_adp_info->v_venderstr,
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vmf.vmf_es, vmf.vmf_di, buf);
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vesa_prodstr =
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(char *)vesa_fix_ptr(vesa_adp_info->v_prodstr,
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vmf.vmf_es, vmf.vmf_di, buf);
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vesa_revstr =
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(char *)vesa_fix_ptr(vesa_adp_info->v_revstr,
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vmf.vmf_es, vmf.vmf_di, buf);
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}
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/* obtain video mode information */
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vesa_vmode[0].vi_mode = EOT;
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vesa_vmodetab = (u_int16_t *)vesa_fix_ptr(vesa_adp_info->v_modetable,
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vmf.vmf_es, vmf.vmf_di, buf);
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if (vesa_vmodetab == NULL)
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return 1;
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for (i = 0, modes = 0;
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(i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
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&& (vesa_vmodetab[i] != 0xffff); ++i) {
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if (modes >= VESA_MAXMODES)
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break;
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if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
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continue;
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/* reject unsupported modes */
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#if 0
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if ((vmode.v_modeattr & (V_MODESUPP | V_MODEOPTINFO
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| V_MODENONVGA))
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!= (V_MODESUPP | V_MODEOPTINFO))
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continue;
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#else
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if ((vmode.v_modeattr & (V_MODEOPTINFO | V_MODENONVGA))
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!= (V_MODEOPTINFO))
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continue;
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#endif
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/* copy some fields */
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bzero(&vesa_vmode[modes], sizeof(vesa_vmode[modes]));
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vesa_vmode[modes].vi_mode = vesa_vmodetab[i];
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vesa_vmode[modes].vi_width = vmode.v_width;
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vesa_vmode[modes].vi_height = vmode.v_height;
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vesa_vmode[modes].vi_depth = vmode.v_bpp;
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vesa_vmode[modes].vi_planes = vmode.v_planes;
|
|
vesa_vmode[modes].vi_cwidth = vmode.v_cwidth;
|
|
vesa_vmode[modes].vi_cheight = vmode.v_cheight;
|
|
vesa_vmode[modes].vi_window = (u_int)vmode.v_waseg << 4;
|
|
/* XXX window B */
|
|
vesa_vmode[modes].vi_window_size = vmode.v_wsize*1024;
|
|
vesa_vmode[modes].vi_window_gran = vmode.v_wgran*1024;
|
|
vesa_vmode[modes].vi_buffer = vmode.v_lfb;
|
|
vesa_vmode[modes].vi_buffer_size = vmode.v_offscreen;
|
|
/* pixel format, memory model... */
|
|
vesa_vmode[modes].vi_flags
|
|
= vesa_translate_flags(vmode.v_modeattr) | V_INFO_VESA;
|
|
++modes;
|
|
}
|
|
vesa_vmode[modes].vi_mode = EOT;
|
|
if (bootverbose)
|
|
printf("VESA: %d mode(s) found\n", modes);
|
|
|
|
has_vesa_bios = (modes > 0);
|
|
return (has_vesa_bios ? 0 : 1);
|
|
}
|
|
|
|
static void
|
|
vesa_clear_modes(video_info_t *info, int color)
|
|
{
|
|
while (info->vi_mode != EOT) {
|
|
if ((info->vi_flags & V_INFO_COLOR) != color)
|
|
info->vi_mode = NA;
|
|
++info;
|
|
}
|
|
}
|
|
|
|
/* entry points */
|
|
|
|
static int
|
|
vesa_configure(int flags)
|
|
{
|
|
video_adapter_t *adp;
|
|
int adapters;
|
|
int error;
|
|
int i;
|
|
|
|
if (vesa_init_done)
|
|
return 0;
|
|
if (flags & VIO_PROBE_ONLY)
|
|
return 0; /* XXX */
|
|
|
|
/*
|
|
* If the VESA module has already been loaded, abort loading
|
|
* the module this time.
|
|
*/
|
|
for (i = 0; (adp = vid_get_adapter(i)) != NULL; ++i) {
|
|
if (adp->va_flags & V_ADP_VESA)
|
|
return ENXIO;
|
|
if (adp->va_type == KD_VGA)
|
|
break;
|
|
}
|
|
/*
|
|
* The VGA adapter is not found. This is because either
|
|
* 1) the VGA driver has not been initialized, or 2) the VGA card
|
|
* is not present. If 1) is the case, we shall defer
|
|
* initialization for now and try again later.
|
|
*/
|
|
if (adp == NULL) {
|
|
vga_sub_configure = vesa_configure;
|
|
return ENODEV;
|
|
}
|
|
|
|
/* count number of registered adapters */
|
|
for (++i; vid_get_adapter(i) != NULL; ++i)
|
|
;
|
|
adapters = i;
|
|
|
|
/* call VESA BIOS */
|
|
vesa_adp = adp;
|
|
if (vesa_bios_init()) {
|
|
vesa_adp = NULL;
|
|
return ENXIO;
|
|
}
|
|
vesa_adp->va_flags |= V_ADP_VESA;
|
|
|
|
/* remove conflicting modes if we have more than one adapter */
|
|
if (adapters > 1) {
|
|
vesa_clear_modes(vesa_vmode,
|
|
(vesa_adp->va_flags & V_ADP_COLOR) ?
|
|
V_INFO_COLOR : 0);
|
|
}
|
|
|
|
if ((error = vesa_load_ioctl()) == 0) {
|
|
prevvidsw = vidsw[vesa_adp->va_index];
|
|
vidsw[vesa_adp->va_index] = &vesavidsw;
|
|
vesa_init_done = TRUE;
|
|
} else {
|
|
vesa_adp = NULL;
|
|
return error;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
vesa_nop(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
vesa_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
|
|
{
|
|
return (*prevvidsw->probe)(unit, adpp, arg, flags);
|
|
}
|
|
|
|
static int
|
|
vesa_init(int unit, video_adapter_t *adp, int flags)
|
|
{
|
|
return (*prevvidsw->init)(unit, adp, flags);
|
|
}
|
|
|
|
static int
|
|
vesa_get_info(video_adapter_t *adp, int mode, video_info_t *info)
|
|
{
|
|
int i;
|
|
|
|
if ((*prevvidsw->get_info)(adp, mode, info) == 0)
|
|
return 0;
|
|
|
|
if (adp != vesa_adp)
|
|
return 1;
|
|
|
|
mode = vesa_map_gen_mode_num(vesa_adp->va_type,
|
|
vesa_adp->va_flags & V_ADP_COLOR, mode);
|
|
for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
|
|
if (vesa_vmode[i].vi_mode == NA)
|
|
continue;
|
|
if (vesa_vmode[i].vi_mode == mode) {
|
|
*info = vesa_vmode[i];
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
vesa_query_mode(video_adapter_t *adp, video_info_t *info)
|
|
{
|
|
int i;
|
|
|
|
if ((i = (*prevvidsw->query_mode)(adp, info)) != -1)
|
|
return i;
|
|
if (adp != vesa_adp)
|
|
return -1;
|
|
|
|
for (i = 0; vesa_vmode[i].vi_mode != EOT; ++i) {
|
|
if ((info->vi_width != 0)
|
|
&& (info->vi_width != vesa_vmode[i].vi_width))
|
|
continue;
|
|
if ((info->vi_height != 0)
|
|
&& (info->vi_height != vesa_vmode[i].vi_height))
|
|
continue;
|
|
if ((info->vi_cwidth != 0)
|
|
&& (info->vi_cwidth != vesa_vmode[i].vi_cwidth))
|
|
continue;
|
|
if ((info->vi_cheight != 0)
|
|
&& (info->vi_cheight != vesa_vmode[i].vi_cheight))
|
|
continue;
|
|
if ((info->vi_depth != 0)
|
|
&& (info->vi_depth != vesa_vmode[i].vi_depth))
|
|
continue;
|
|
if ((info->vi_planes != 0)
|
|
&& (info->vi_planes != vesa_vmode[i].vi_planes))
|
|
continue;
|
|
/* pixel format, memory model */
|
|
if ((info->vi_flags != 0)
|
|
&& (info->vi_flags != vesa_vmode[i].vi_flags))
|
|
continue;
|
|
return vesa_vmode[i].vi_mode;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int
|
|
vesa_set_mode(video_adapter_t *adp, int mode)
|
|
{
|
|
video_info_t info;
|
|
#if 0
|
|
size_t len;
|
|
#endif
|
|
|
|
if (adp != vesa_adp)
|
|
return (*prevvidsw->set_mode)(adp, mode);
|
|
|
|
mode = vesa_map_gen_mode_num(vesa_adp->va_type,
|
|
vesa_adp->va_flags & V_ADP_COLOR, mode);
|
|
#if VESA_DEBUG > 0
|
|
printf("VESA: set_mode(): %d(%x) -> %d(%x)\n",
|
|
vesa_adp->va_mode, vesa_adp->va_mode, mode, mode);
|
|
#endif
|
|
/*
|
|
* If the current mode is a VESA mode and the new mode is not,
|
|
* restore the state of the adapter first, so that non-standard,
|
|
* extended SVGA registers are set to the state compatible with
|
|
* the standard VGA modes. Otherwise (*prevvidsw->set_mode)()
|
|
* may not be able to set up the new mode correctly.
|
|
*/
|
|
if (VESA_MODE(vesa_adp->va_mode)) {
|
|
if ((*prevvidsw->get_info)(adp, mode, &info) == 0) {
|
|
int10_set_mode(vesa_adp->va_initial_bios_mode);
|
|
#if 0
|
|
/* assert(vesa_state_buf != NULL); */
|
|
if ((vesa_state_buf == NULL)
|
|
|| vesa_load_state(adp, vesa_state_buf))
|
|
return 1;
|
|
free(vesa_state_buf, M_DEVBUF);
|
|
vesa_state_buf = NULL;
|
|
#if VESA_DEBUG > 0
|
|
printf("VESA: restored\n");
|
|
#endif
|
|
#endif /* 0 */
|
|
}
|
|
/*
|
|
* once (*prevvidsw->get_info)() succeeded,
|
|
* (*prevvidsw->set_mode)() below won't fail...
|
|
*/
|
|
}
|
|
|
|
/* we may not need to handle this mode after all... */
|
|
if ((*prevvidsw->set_mode)(adp, mode) == 0)
|
|
return 0;
|
|
|
|
/* is the new mode supported? */
|
|
if (vesa_get_info(adp, mode, &info))
|
|
return 1;
|
|
/* assert(VESA_MODE(mode)); */
|
|
|
|
#if VESA_DEBUG > 0
|
|
printf("VESA: about to set a VESA mode...\n");
|
|
#endif
|
|
/*
|
|
* If the current mode is not a VESA mode, save the current state
|
|
* so that the adapter state can be restored later when a non-VESA
|
|
* mode is to be set up. See above.
|
|
*/
|
|
#if 0
|
|
if (!VESA_MODE(vesa_adp->va_mode) && (vesa_state_buf == NULL)) {
|
|
len = vesa_save_state(adp, NULL, 0);
|
|
vesa_state_buf = malloc(len, M_DEVBUF, M_WAITOK);
|
|
if (vesa_save_state(adp, vesa_state_buf, len)) {
|
|
#if VESA_DEBUG > 0
|
|
printf("VESA: state save failed! (len=%d)\n", len);
|
|
#endif
|
|
free(vesa_state_buf, M_DEVBUF);
|
|
vesa_state_buf = NULL;
|
|
return 1;
|
|
}
|
|
#if VESA_DEBUG > 0
|
|
printf("VESA: saved (len=%d)\n", len);
|
|
dump_buffer(vesa_state_buf, len);
|
|
#endif
|
|
}
|
|
#endif /* 0 */
|
|
|
|
if (vesa_bios_set_mode(mode))
|
|
return 1;
|
|
|
|
#if VESA_DEBUG > 0
|
|
printf("VESA: mode set!\n");
|
|
#endif
|
|
vesa_adp->va_mode = mode;
|
|
vesa_adp->va_flags &= ~V_ADP_COLOR;
|
|
vesa_adp->va_flags |=
|
|
(info.vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
|
|
vesa_adp->va_crtc_addr =
|
|
(vesa_adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
|
|
vesa_adp->va_window = BIOS_PADDRTOVADDR(info.vi_window);
|
|
vesa_adp->va_window_size = info.vi_window_size;
|
|
vesa_adp->va_window_gran = info.vi_window_gran;
|
|
if (info.vi_buffer_size == 0) {
|
|
vesa_adp->va_buffer = 0;
|
|
vesa_adp->va_buffer_size = 0;
|
|
} else {
|
|
vesa_adp->va_buffer = BIOS_PADDRTOVADDR(info.vi_buffer);
|
|
vesa_adp->va_buffer_size = info.vi_buffer_size;
|
|
}
|
|
|
|
/* move hardware cursor out of the way */
|
|
(*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
vesa_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
|
|
int ch, int count)
|
|
{
|
|
return (*prevvidsw->save_font)(adp, page, fontsize, data, ch, count);
|
|
}
|
|
|
|
static int
|
|
vesa_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
|
|
int ch, int count)
|
|
{
|
|
return (*prevvidsw->load_font)(adp, page, fontsize, data, ch, count);
|
|
}
|
|
|
|
static int
|
|
vesa_show_font(video_adapter_t *adp, int page)
|
|
{
|
|
return (*prevvidsw->show_font)(adp, page);
|
|
}
|
|
|
|
static int
|
|
vesa_save_palette(video_adapter_t *adp, u_char *palette)
|
|
{
|
|
if ((adp != vesa_adp) || !(vesa_adp_info->v_flags & V_DAC8)
|
|
|| vesa_bios_set_dac(8))
|
|
return (*prevvidsw->save_palette)(adp, palette);
|
|
|
|
return vesa_bios_save_palette(0, 256, palette);
|
|
}
|
|
|
|
static int
|
|
vesa_load_palette(video_adapter_t *adp, u_char *palette)
|
|
{
|
|
if ((adp != vesa_adp) || !(vesa_adp_info->v_flags & V_DAC8)
|
|
|| vesa_bios_set_dac(8))
|
|
return (*prevvidsw->load_palette)(adp, palette);
|
|
|
|
return vesa_bios_load_palette(0, 256, palette);
|
|
}
|
|
|
|
static int
|
|
vesa_set_border(video_adapter_t *adp, int color)
|
|
{
|
|
return (*prevvidsw->set_border)(adp, color);
|
|
}
|
|
|
|
static int
|
|
vesa_save_state(video_adapter_t *adp, void *p, size_t size)
|
|
{
|
|
if (adp != vesa_adp)
|
|
return (*prevvidsw->save_state)(adp, p, size);
|
|
|
|
if (vesa_state_buf_size == 0)
|
|
vesa_state_buf_size = vesa_bios_state_buf_size();
|
|
if (size == 0)
|
|
return (sizeof(int) + vesa_state_buf_size);
|
|
else if (size < (sizeof(int) + vesa_state_buf_size))
|
|
return 1;
|
|
|
|
((adp_state_t *)p)->sig = V_STATE_SIG;
|
|
bzero(((adp_state_t *)p)->regs, vesa_state_buf_size);
|
|
return vesa_bios_save_restore(STATE_SAVE, ((adp_state_t *)p)->regs,
|
|
vesa_state_buf_size);
|
|
}
|
|
|
|
static int
|
|
vesa_load_state(video_adapter_t *adp, void *p)
|
|
{
|
|
if ((adp != vesa_adp) || (((adp_state_t *)p)->sig != V_STATE_SIG))
|
|
return (*prevvidsw->load_state)(adp, p);
|
|
|
|
return vesa_bios_save_restore(STATE_LOAD, ((adp_state_t *)p)->regs,
|
|
vesa_state_buf_size);
|
|
}
|
|
|
|
static int
|
|
vesa_set_origin(video_adapter_t *adp, off_t offset)
|
|
{
|
|
struct vm86frame vmf;
|
|
int err;
|
|
|
|
/*
|
|
* This function should return as quickly as possible to
|
|
* maintain good performance of the system. For this reason,
|
|
* error checking is kept minimal and let the VESA BIOS to
|
|
* detect error.
|
|
*/
|
|
if (adp != vesa_adp)
|
|
return (*prevvidsw->set_win_org)(adp, offset);
|
|
|
|
if (vesa_adp->va_window_gran == 0)
|
|
return 1;
|
|
bzero(&vmf, sizeof(vmf));
|
|
vmf.vmf_eax = 0x4f05;
|
|
vmf.vmf_ebx = 0; /* WINDOW_A, XXX */
|
|
vmf.vmf_edx = offset/vesa_adp->va_window_gran;
|
|
err = vm86_intcall(0x10, &vmf);
|
|
return ((err != 0) || (vmf.vmf_eax != 0x4f));
|
|
}
|
|
|
|
static int
|
|
vesa_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
|
|
{
|
|
return (*prevvidsw->read_hw_cursor)(adp, col, row);
|
|
}
|
|
|
|
static int
|
|
vesa_set_hw_cursor(video_adapter_t *adp, int col, int row)
|
|
{
|
|
return (*prevvidsw->set_hw_cursor)(adp, col, row);
|
|
}
|
|
|
|
static int
|
|
vesa_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
|
|
int celsize, int blink)
|
|
{
|
|
return (*prevvidsw->set_hw_cursor_shape)(adp, base, height, celsize,
|
|
blink);
|
|
}
|
|
|
|
static int
|
|
vesa_mmap(video_adapter_t *adp, vm_offset_t offset)
|
|
{
|
|
return (*prevvidsw->mmap)(adp, offset);
|
|
}
|
|
|
|
static int
|
|
vesa_diag(video_adapter_t *adp, int level)
|
|
{
|
|
#if VESA_DEBUG > 1
|
|
struct vesa_mode vmode;
|
|
int i;
|
|
#endif
|
|
|
|
if (adp != vesa_adp)
|
|
return 1;
|
|
|
|
#ifndef KLD_MODULE
|
|
/* call the previous handler first */
|
|
(*prevvidsw->diag)(adp, level);
|
|
#endif
|
|
|
|
/* general adapter information */
|
|
printf("VESA: v%d.%d, %dk memory, flags:0x%x, mode table:%p (%x)\n",
|
|
((vesa_adp_info->v_version & 0xf000) >> 12) * 10
|
|
+ ((vesa_adp_info->v_version & 0x0f00) >> 8),
|
|
((vesa_adp_info->v_version & 0x00f0) >> 4) * 10
|
|
+ (vesa_adp_info->v_version & 0x000f),
|
|
vesa_adp_info->v_memsize * 64, vesa_adp_info->v_flags,
|
|
vesa_vmodetab, vesa_adp_info->v_modetable);
|
|
/* OEM string */
|
|
if (vesa_oemstr != NULL)
|
|
printf("VESA: %s\n", vesa_oemstr);
|
|
|
|
if (level <= 0)
|
|
return 0;
|
|
|
|
if (vesa_adp_info->v_version >= 0x0200) {
|
|
/* vendor name */
|
|
if (vesa_venderstr != NULL)
|
|
printf("VESA: %s\n", vesa_venderstr);
|
|
/* product name */
|
|
if (vesa_prodstr != NULL)
|
|
printf("VESA: %s\n", vesa_prodstr);
|
|
/* product revision */
|
|
if (vesa_revstr != NULL)
|
|
printf("VESA: %s\n", vesa_revstr);
|
|
}
|
|
|
|
#if VESA_DEBUG > 1
|
|
/* mode information */
|
|
for (i = 0;
|
|
(i < (M_VESA_MODE_MAX - M_VESA_BASE + 1))
|
|
&& (vesa_vmodetab[i] != 0xffff); ++i) {
|
|
if (vesa_bios_get_mode(vesa_vmodetab[i], &vmode))
|
|
continue;
|
|
|
|
/* print something for diagnostic purpose */
|
|
printf("VESA: mode:0x%03x, flags:0x%04x",
|
|
vesa_vmodetab[i], vmode.v_modeattr);
|
|
if (vmode.v_modeattr & V_MODEOPTINFO) {
|
|
if (vmode.v_modeattr & V_MODEGRAPHICS) {
|
|
printf(", G %dx%dx%d %d, ",
|
|
vmode.v_width, vmode.v_height,
|
|
vmode.v_bpp, vmode.v_planes);
|
|
} else {
|
|
printf(", T %dx%d, ",
|
|
vmode.v_width, vmode.v_height);
|
|
}
|
|
printf("font:%dx%d",
|
|
vmode.v_cwidth, vmode.v_cheight);
|
|
}
|
|
if (vmode.v_modeattr & V_MODELFB) {
|
|
printf(", mem:%d, LFB:0x%x, off:0x%x",
|
|
vmode.v_memmodel, vmode.v_lfb,
|
|
vmode.v_offscreen);
|
|
}
|
|
printf("\n");
|
|
printf("VESA: window A:0x%x (%x), window B:0x%x (%x), ",
|
|
vmode.v_waseg, vmode.v_waattr,
|
|
vmode.v_wbseg, vmode.v_wbattr);
|
|
printf("size:%dk, gran:%dk\n",
|
|
vmode.v_wsize, vmode.v_wgran);
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* module loading */
|
|
|
|
static int
|
|
vesa_load(void)
|
|
{
|
|
int error;
|
|
int s;
|
|
|
|
if (vesa_init_done)
|
|
return 0;
|
|
|
|
/* locate a VGA adapter */
|
|
s = spltty();
|
|
vesa_adp = NULL;
|
|
error = vesa_configure(0);
|
|
splx(s);
|
|
|
|
#ifdef KLD_MODULE
|
|
if (error == 0)
|
|
vesa_diag(vesa_adp, bootverbose);
|
|
#endif
|
|
|
|
return error;
|
|
}
|
|
|
|
#ifdef KLD_MODULE
|
|
|
|
static int
|
|
vesa_unload(void)
|
|
{
|
|
int error;
|
|
int s;
|
|
|
|
/* if the adapter is currently in a VESA mode, don't unload */
|
|
if ((vesa_adp != NULL) && VESA_MODE(vesa_adp->va_mode))
|
|
return EBUSY;
|
|
/*
|
|
* FIXME: if there is at least one vty which is in a VESA mode,
|
|
* we shouldn't be unloading! XXX
|
|
*/
|
|
|
|
s = spltty();
|
|
if ((error = vesa_unload_ioctl()) == 0) {
|
|
if (vesa_adp != NULL)
|
|
vesa_adp->va_flags &= ~V_ADP_VESA;
|
|
vidsw[vesa_adp->va_index] = prevvidsw;
|
|
}
|
|
splx(s);
|
|
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
vesa_mod_event(module_t mod, int type, void *data)
|
|
{
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
return vesa_load();
|
|
case MOD_UNLOAD:
|
|
return vesa_unload();
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static moduledata_t vesa_mod = {
|
|
"vesa",
|
|
vesa_mod_event,
|
|
NULL,
|
|
};
|
|
|
|
DECLARE_MODULE(vesa, vesa_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
|
|
|
|
#else /* KLD_MODULE */
|
|
|
|
SYSINIT(vesa, SI_SUB_DRIVERS, SI_ORDER_MIDDLE,
|
|
(void (*)(void *))vesa_load, NULL);
|
|
|
|
#endif /* KLD_MODULE */
|
|
|
|
#endif /* (NVGA > 0 && VESA && VM86) || KLD_MODULE */
|