NetBSD-5.0.2/sys/dev/ic/vga.c
/* $NetBSD: vga.c,v 1.100 2008/03/16 19:57:39 dyoung Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vga.c,v 1.100 2008/03/16 19:57:39 dyoung Exp $");
/* for WSCONS_SUPPORT_PCVTFONTS */
#include "opt_wsdisplay_compat.h"
/* for WSDISPLAY_CUSTOM_BORDER */
#include "opt_wsdisplay_border.h"
/* for WSDISPLAY_CUSTOM_OUTPUT */
#include "opt_wsmsgattrs.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/callout.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/bus.h>
#include <dev/ic/mc6845reg.h>
#include <dev/ic/pcdisplayvar.h>
#include <dev/ic/vgareg.h>
#include <dev/ic/vgavar.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/unicode.h>
#include <dev/wsfont/wsfont.h>
#include <dev/ic/pcdisplay.h>
#ifdef __i386__
#include <arch/i386/bios/vesafbvar.h>
#endif
int vga_no_builtinfont = 0;
static struct wsdisplay_font _vga_builtinfont = {
"builtin", /* typeface name */
0, /* firstchar */
256, /* numbers */
WSDISPLAY_FONTENC_IBM, /* encoding */
8, /* width */
16, /* height */
1, /* stride */
WSDISPLAY_FONTORDER_L2R, /* bit order */
0, /* byte order */
NULL /* data */
};
struct egavga_font {
struct wsdisplay_font *wsfont;
int cookie; /* wsfont handle, -1 invalid */
int slot; /* in adapter RAM */
int usecount;
TAILQ_ENTRY(egavga_font) next; /* LRU queue */
};
static struct egavga_font vga_builtinfont = {
.wsfont = &_vga_builtinfont,
.cookie = -1,
.slot = 0,
};
#ifdef VGA_CONSOLE_SCREENTYPE
static struct egavga_font vga_consolefont;
#endif
struct vgascreen {
struct pcdisplayscreen pcs;
LIST_ENTRY(vgascreen) next;
struct vga_config *cfg;
/* videostate */
struct egavga_font *fontset1, *fontset2;
/* font data */
/* palette */
int mindispoffset, maxdispoffset;
int vga_rollover;
int visibleoffset;
};
static int vgaconsole, vga_console_type, vga_console_attached;
static struct vgascreen vga_console_screen;
static struct vga_config vga_console_vc;
struct egavga_font *egavga_getfont(struct vga_config *, struct vgascreen *,
const char *, int);
void egavga_unreffont(struct vga_config *, struct egavga_font *);
int vga_selectfont(struct vga_config *, struct vgascreen *, const char *,
const char *);
void vga_init_screen(struct vga_config *, struct vgascreen *,
const struct wsscreen_descr *, int, long *);
void vga_init(struct vga_config *, bus_space_tag_t, bus_space_tag_t);
static void vga_setfont(struct vga_config *, struct vgascreen *);
static int vga_mapchar(void *, int, unsigned int *);
void vga_putchar(void *, int, int, u_int, long);
static int vga_allocattr(void *, int, int, int, long *);
static void vga_copyrows(void *, int, int, int);
#ifdef WSDISPLAY_SCROLLSUPPORT
void vga_scroll (void *, void *, int);
#endif
const struct wsdisplay_emulops vga_emulops = {
pcdisplay_cursor,
vga_mapchar,
vga_putchar,
pcdisplay_copycols,
pcdisplay_erasecols,
vga_copyrows,
pcdisplay_eraserows,
vga_allocattr,
#ifdef WSDISPLAY_CUSTOM_OUTPUT
pcdisplay_replaceattr,
#else
NULL,
#endif
};
/*
* translate WS(=ANSI) color codes to standard pc ones
*/
static const unsigned char fgansitopc[] = {
#ifdef __alpha__
/*
* XXX DEC HAS SWITCHED THE CODES FOR BLUE AND RED!!!
* XXX We should probably not bother with this
* XXX (reinitialize the palette registers).
*/
FG_BLACK, FG_BLUE, FG_GREEN, FG_CYAN, FG_RED,
FG_MAGENTA, FG_BROWN, FG_LIGHTGREY
#else
FG_BLACK, FG_RED, FG_GREEN, FG_BROWN, FG_BLUE,
FG_MAGENTA, FG_CYAN, FG_LIGHTGREY
#endif
}, bgansitopc[] = {
#ifdef __alpha__
BG_BLACK, BG_BLUE, BG_GREEN, BG_CYAN, BG_RED,
BG_MAGENTA, BG_BROWN, BG_LIGHTGREY
#else
BG_BLACK, BG_RED, BG_GREEN, BG_BROWN, BG_BLUE,
BG_MAGENTA, BG_CYAN, BG_LIGHTGREY
#endif
};
const struct wsscreen_descr vga_25lscreen = {
"80x25", 80, 25,
&vga_emulops,
8, 16,
WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_BLINK,
NULL,
}, vga_25lscreen_mono = {
"80x25", 80, 25,
&vga_emulops,
8, 16,
WSSCREEN_HILIT | WSSCREEN_UNDERLINE | WSSCREEN_BLINK | WSSCREEN_REVERSE,
NULL,
}, vga_25lscreen_bf = {
"80x25bf", 80, 25,
&vga_emulops,
8, 16,
WSSCREEN_WSCOLORS | WSSCREEN_BLINK,
NULL,
}, vga_40lscreen = {
"80x40", 80, 40,
&vga_emulops,
8, 10,
WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_BLINK,
NULL,
}, vga_40lscreen_mono = {
"80x40", 80, 40,
&vga_emulops,
8, 10,
WSSCREEN_HILIT | WSSCREEN_UNDERLINE | WSSCREEN_BLINK | WSSCREEN_REVERSE,
NULL,
}, vga_40lscreen_bf = {
"80x40bf", 80, 40,
&vga_emulops,
8, 10,
WSSCREEN_WSCOLORS | WSSCREEN_BLINK,
NULL,
}, vga_50lscreen = {
"80x50", 80, 50,
&vga_emulops,
8, 8,
WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_BLINK,
NULL,
}, vga_50lscreen_mono = {
"80x50", 80, 50,
&vga_emulops,
8, 8,
WSSCREEN_HILIT | WSSCREEN_UNDERLINE | WSSCREEN_BLINK | WSSCREEN_REVERSE,
NULL,
}, vga_50lscreen_bf = {
"80x50bf", 80, 50,
&vga_emulops,
8, 8,
WSSCREEN_WSCOLORS | WSSCREEN_BLINK,
NULL,
}, vga_24lscreen = {
"80x24", 80, 24,
&vga_emulops,
8, 16,
WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_BLINK,
NULL,
}, vga_24lscreen_mono = {
"80x24", 80, 24,
&vga_emulops,
8, 16,
WSSCREEN_HILIT | WSSCREEN_UNDERLINE | WSSCREEN_BLINK | WSSCREEN_REVERSE,
NULL,
}, vga_24lscreen_bf = {
"80x24bf", 80, 24,
&vga_emulops,
8, 16,
WSSCREEN_WSCOLORS | WSSCREEN_BLINK,
NULL,
};
#define VGA_SCREEN_CANTWOFONTS(type) (!((type)->capabilities & WSSCREEN_HILIT))
const struct wsscreen_descr *_vga_scrlist[] = {
&vga_25lscreen,
&vga_25lscreen_bf,
&vga_40lscreen,
&vga_40lscreen_bf,
&vga_50lscreen,
&vga_50lscreen_bf,
&vga_24lscreen,
&vga_24lscreen_bf,
/* XXX other formats, graphics screen? */
}, *_vga_scrlist_mono[] = {
&vga_25lscreen_mono,
&vga_40lscreen_mono,
&vga_50lscreen_mono,
&vga_24lscreen_mono,
/* XXX other formats, graphics screen? */
};
const struct wsscreen_list vga_screenlist = {
sizeof(_vga_scrlist) / sizeof(struct wsscreen_descr *),
_vga_scrlist
}, vga_screenlist_mono = {
sizeof(_vga_scrlist_mono) / sizeof(struct wsscreen_descr *),
_vga_scrlist_mono
};
static int vga_ioctl(void *, void *, u_long, void *, int, struct lwp *);
static paddr_t vga_mmap(void *, void *, off_t, int);
static int vga_alloc_screen(void *, const struct wsscreen_descr *,
void **, int *, int *, long *);
static void vga_free_screen(void *, void *);
static int vga_show_screen(void *, void *, int,
void (*)(void *, int, int), void *);
static int vga_load_font(void *, void *, struct wsdisplay_font *);
#ifdef WSDISPLAY_CUSTOM_BORDER
static int vga_getborder(struct vga_config *, u_int *);
static int vga_setborder(struct vga_config *, u_int);
#endif /* WSDISPLAY_CUSTOM_BORDER */
void vga_doswitch(struct vga_config *);
const struct wsdisplay_accessops vga_accessops = {
vga_ioctl,
vga_mmap,
vga_alloc_screen,
vga_free_screen,
vga_show_screen,
vga_load_font,
NULL,
#ifdef WSDISPLAY_SCROLLSUPPORT
vga_scroll,
#else
NULL,
#endif
};
/*
* We want at least ASCII 32..127 be present in the
* first font slot.
*/
#define vga_valid_primary_font(f) \
(f->wsfont->encoding == WSDISPLAY_FONTENC_IBM || \
f->wsfont->encoding == WSDISPLAY_FONTENC_ISO || \
f->wsfont->encoding == WSDISPLAY_FONTENC_ISO7)
struct egavga_font *
egavga_getfont(struct vga_config *vc, struct vgascreen *scr, const char *name,
int primary)
{
struct egavga_font *f;
int cookie;
struct wsdisplay_font *wf;
TAILQ_FOREACH(f, &vc->vc_fontlist, next) {
if (wsfont_matches(f->wsfont, name,
8, scr->pcs.type->fontheight, 0) &&
(!primary || vga_valid_primary_font(f))) {
#ifdef VGAFONTDEBUG
if (scr != &vga_console_screen || vga_console_attached)
printf("vga_getfont: %s already present\n",
name ? name : "<default>");
#endif
goto found;
}
}
cookie = wsfont_find(name, 8, scr->pcs.type->fontheight, 0,
WSDISPLAY_FONTORDER_L2R, 0);
/* XXX obey "primary" */
if (cookie == -1) {
#ifdef VGAFONTDEBUG
if (scr != &vga_console_screen || vga_console_attached)
printf("vga_getfont: %s not found\n",
name ? name : "<default>");
#endif
return (0);
}
if (wsfont_lock(cookie, &wf))
return (0);
#ifdef VGA_CONSOLE_SCREENTYPE
if (scr == &vga_console_screen)
f = &vga_consolefont;
else
#endif
f = malloc(sizeof(struct egavga_font), M_DEVBUF, M_NOWAIT);
if (!f) {
wsfont_unlock(cookie);
return (0);
}
f->wsfont = wf;
f->cookie = cookie;
f->slot = -1; /* not yet loaded */
f->usecount = 0; /* incremented below */
TAILQ_INSERT_TAIL(&vc->vc_fontlist, f, next);
found:
f->usecount++;
#ifdef VGAFONTDEBUG
if (scr != &vga_console_screen || vga_console_attached)
printf("vga_getfont: usecount=%d\n", f->usecount);
#endif
return (f);
}
void
egavga_unreffont(struct vga_config *vc, struct egavga_font *f)
{
f->usecount--;
#ifdef VGAFONTDEBUG
printf("vga_unreffont: usecount=%d\n", f->usecount);
#endif
if (f->usecount == 0 && f->cookie != -1) {
TAILQ_REMOVE(&vc->vc_fontlist, f, next);
if (f->slot != -1) {
KASSERT(vc->vc_fonts[f->slot] == f);
vc->vc_fonts[f->slot] = 0;
}
wsfont_unlock(f->cookie);
#ifdef VGA_CONSOLE_SCREENTYPE
if (f != &vga_consolefont)
#endif
free(f, M_DEVBUF);
}
}
int
vga_selectfont(struct vga_config *vc, struct vgascreen *scr, const char *name1,
const char *name2)
{
const struct wsscreen_descr *type = scr->pcs.type;
struct egavga_font *f1, *f2;
f1 = egavga_getfont(vc, scr, name1, 1);
if (!f1)
return (ENXIO);
if (VGA_SCREEN_CANTWOFONTS(type) && name2) {
f2 = egavga_getfont(vc, scr, name2, 0);
if (!f2) {
egavga_unreffont(vc, f1);
return (ENXIO);
}
} else
f2 = 0;
#ifdef VGAFONTDEBUG
if (scr != &vga_console_screen || vga_console_attached) {
printf("vga (%s): font1=%s (slot %d)", type->name,
f1->wsfont->name, f1->slot);
if (f2)
printf(", font2=%s (slot %d)",
f2->wsfont->name, f2->slot);
printf("\n");
}
#endif
if (scr->fontset1)
egavga_unreffont(vc, scr->fontset1);
scr->fontset1 = f1;
if (scr->fontset2)
egavga_unreffont(vc, scr->fontset2);
scr->fontset2 = f2;
return (0);
}
void
vga_init_screen(struct vga_config *vc, struct vgascreen *scr,
const struct wsscreen_descr *type, int existing, long *attrp)
{
int cpos;
int res;
scr->cfg = vc;
scr->pcs.hdl = (struct pcdisplay_handle *)&vc->hdl;
scr->pcs.type = type;
scr->pcs.active = existing;
scr->mindispoffset = 0;
if (vc->vc_quirks & VGA_QUIRK_NOFASTSCROLL)
scr->maxdispoffset = 0;
else
scr->maxdispoffset = 0x8000 - type->nrows * type->ncols * 2;
if (existing) {
vc->active = scr;
cpos = vga_6845_read(&vc->hdl, cursorh) << 8;
cpos |= vga_6845_read(&vc->hdl, cursorl);
/* make sure we have a valid cursor position */
if (cpos < 0 || cpos >= type->nrows * type->ncols)
cpos = 0;
scr->pcs.dispoffset = vga_6845_read(&vc->hdl, startadrh) << 9;
scr->pcs.dispoffset |= vga_6845_read(&vc->hdl, startadrl) << 1;
/* make sure we have a valid memory offset */
if (scr->pcs.dispoffset < scr->mindispoffset ||
scr->pcs.dispoffset > scr->maxdispoffset)
scr->pcs.dispoffset = scr->mindispoffset;
if (type != vc->currenttype) {
vga_setscreentype(&vc->hdl, type);
vc->currenttype = type;
}
} else {
cpos = 0;
scr->pcs.dispoffset = scr->mindispoffset;
}
scr->pcs.visibleoffset = scr->pcs.dispoffset;
scr->vga_rollover = 0;
scr->pcs.cursorrow = cpos / type->ncols;
scr->pcs.cursorcol = cpos % type->ncols;
pcdisplay_cursor_init(&scr->pcs, existing);
#ifdef __alpha__
if (!vc->hdl.vh_mono)
/*
* DEC firmware uses a blue background.
* XXX These should be specified as kernel options for
* XXX alpha only, not hardcoded here (which is wrong
* XXX anyway because the emulation layer will assume
* XXX the default attribute is white on black).
*/
res = vga_allocattr(scr, WSCOL_WHITE, WSCOL_BLUE,
WSATTR_WSCOLORS, attrp);
else
#endif
res = vga_allocattr(scr, 0, 0, 0, attrp);
#ifdef DIAGNOSTIC
if (res)
panic("vga_init_screen: attribute botch");
#endif
scr->pcs.mem = NULL;
scr->fontset1 = scr->fontset2 = 0;
if (vga_selectfont(vc, scr, 0, 0)) {
if (scr == &vga_console_screen)
panic("vga_init_screen: no font");
else
printf("vga_init_screen: no font\n");
}
if (existing)
vga_setfont(vc, scr);
vc->nscreens++;
LIST_INSERT_HEAD(&vc->screens, scr, next);
}
void
vga_init(struct vga_config *vc, bus_space_tag_t iot, bus_space_tag_t memt)
{
struct vga_handle *vh = &vc->hdl;
u_int8_t mor;
int i;
vh->vh_iot = iot;
vh->vh_memt = memt;
if (bus_space_map(vh->vh_iot, 0x3c0, 0x10, 0, &vh->vh_ioh_vga))
panic("vga_init: couldn't map vga io");
/* read "misc output register" */
mor = bus_space_read_1(vh->vh_iot, vh->vh_ioh_vga, VGA_MISC_DATAR);
vh->vh_mono = !(mor & 1);
if (bus_space_map(vh->vh_iot, (vh->vh_mono ? 0x3b0 : 0x3d0), 0x10, 0,
&vh->vh_ioh_6845))
panic("vga_init: couldn't map 6845 io");
if (bus_space_map(vh->vh_memt, 0xa0000, 0x20000, 0, &vh->vh_allmemh))
panic("vga_init: couldn't map memory");
if (bus_space_subregion(vh->vh_memt, vh->vh_allmemh,
(vh->vh_mono ? 0x10000 : 0x18000), 0x8000, &vh->vh_memh))
panic("vga_init: mem subrange failed");
/* should only reserve the space (no need to map - save KVM) */
vc->vc_biostag = memt;
if (bus_space_map(vc->vc_biostag, 0xc0000, 0x8000, 0, &vc->vc_bioshdl))
vc->vc_biosmapped = 0;
else
vc->vc_biosmapped = 1;
vc->nscreens = 0;
LIST_INIT(&vc->screens);
vc->active = NULL;
vc->currenttype = vh->vh_mono ? &vga_25lscreen_mono : &vga_25lscreen;
callout_init(&vc->vc_switch_callout, 0);
wsfont_init();
if (vga_no_builtinfont) {
struct wsdisplay_font *wf;
int cookie;
cookie = wsfont_find(NULL, 8, 16, 0,
WSDISPLAY_FONTORDER_L2R, 0);
if (cookie == -1 || wsfont_lock(cookie, &wf))
panic("vga_init: can't load console font");
vga_loadchars(&vc->hdl, 0, wf->firstchar, wf->numchars,
wf->fontheight, wf->data);
vga_builtinfont.wsfont = wf;
vga_builtinfont.cookie = cookie;
vga_builtinfont.slot = 0;
}
vc->vc_fonts[0] = &vga_builtinfont;
for (i = 1; i < 8; i++)
vc->vc_fonts[i] = 0;
TAILQ_INIT(&vc->vc_fontlist);
TAILQ_INSERT_HEAD(&vc->vc_fontlist, &vga_builtinfont, next);
vc->currentfontset1 = vc->currentfontset2 = 0;
if (!vh->vh_mono && (u_int)WSDISPLAY_BORDER_COLOR < sizeof(fgansitopc))
_vga_attr_write(vh, VGA_ATC_OVERSCAN,
fgansitopc[WSDISPLAY_BORDER_COLOR]);
}
void
vga_common_attach(struct vga_softc *sc, bus_space_tag_t iot,
bus_space_tag_t memt, int type, int quirks,
const struct vga_funcs *vf)
{
int console;
struct vga_config *vc;
struct wsemuldisplaydev_attach_args aa;
console = vga_is_console(iot, type);
if (console) {
vc = &vga_console_vc;
vga_console_attached = 1;
} else {
vc = malloc(sizeof(struct vga_config), M_DEVBUF, M_WAITOK);
vga_init(vc, iot, memt);
}
if (quirks & VGA_QUIRK_ONEFONT) {
vc->vc_nfontslots = 1;
#ifndef VGA_CONSOLE_ATI_BROKEN_FONTSEL
/*
* XXX maybe invalidate font in slot > 0, but this can
* only be happen with VGA_CONSOLE_SCREENTYPE, and then
* we require VGA_CONSOLE_ATI_BROKEN_FONTSEL anyway.
*/
#endif
} else {
vc->vc_nfontslots = 8;
#ifndef VGA_CONSOLE_ATI_BROKEN_FONTSEL
/*
* XXX maybe validate builtin font shifted to slot 1 if
* slot 0 got overwritten because of VGA_CONSOLE_SCREENTYPE,
* but it will be reloaded anyway if needed.
*/
#endif
}
/*
* Save the builtin font to memory. In case it got overwritten
* in console initialization, use the copy in slot 1.
*/
#ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL
#define BUILTINFONTLOC (vga_builtinfont.slot == -1 ? 1 : 0)
#else
KASSERT(vga_builtinfont.slot == 0);
#define BUILTINFONTLOC (0)
#endif
if (!vga_no_builtinfont) {
char *data =
malloc(256 * vga_builtinfont.wsfont->fontheight,
M_DEVBUF, M_WAITOK);
vga_readoutchars(&vc->hdl, BUILTINFONTLOC, 0, 256,
vga_builtinfont.wsfont->fontheight, data);
vga_builtinfont.wsfont->data = data;
}
vc->vc_type = type;
vc->vc_funcs = vf;
vc->vc_quirks = quirks;
sc->sc_vc = vc;
vc->softc = sc;
aa.console = console;
aa.scrdata = (vc->hdl.vh_mono ? &vga_screenlist_mono : &vga_screenlist);
aa.accessops = &vga_accessops;
aa.accesscookie = vc;
config_found_ia(sc->sc_dev, "wsemuldisplaydev", &aa, wsemuldisplaydevprint);
}
int
vga_cnattach(bus_space_tag_t iot, bus_space_tag_t memt, int type, int check)
{
long defattr;
const struct wsscreen_descr *scr;
if (check && !vga_common_probe(iot, memt))
return (ENXIO);
/* set up bus-independent VGA configuration */
vga_init(&vga_console_vc, iot, memt);
#ifdef VGA_CONSOLE_SCREENTYPE
scr = wsdisplay_screentype_pick(vga_console_vc.hdl.vh_mono ?
&vga_screenlist_mono : &vga_screenlist, VGA_CONSOLE_SCREENTYPE);
if (!scr)
panic("vga_cnattach: invalid screen type");
#else
scr = vga_console_vc.currenttype;
#endif
#ifdef VGA_CONSOLE_ATI_BROKEN_FONTSEL
/*
* On some (most/all?) ATI cards, only font slot 0 is usable.
* vga_init_screen() might need font slot 0 for a non-default
* console font, so save the builtin VGA font to another font slot.
* The attach() code will take care later.
*/
vga_console_vc.vc_quirks |= VGA_QUIRK_ONEFONT; /* redundant */
vga_copyfont01(&vga_console_vc.hdl);
vga_console_vc.vc_nfontslots = 1;
#else
vga_console_vc.vc_nfontslots = 8;
#endif
#ifdef notdef
/* until we know better, assume "fast scrolling" does not work */
vga_console_vc.vc_quirks |= VGA_QUIRK_NOFASTSCROLL;
#endif
vga_init_screen(&vga_console_vc, &vga_console_screen, scr, 1, &defattr);
wsdisplay_cnattach(scr, &vga_console_screen,
vga_console_screen.pcs.cursorcol,
vga_console_screen.pcs.cursorrow, defattr);
vgaconsole = 1;
vga_console_type = type;
return (0);
}
int
vga_cndetach(void)
{
struct vga_config *vc;
struct vga_handle *vh;
vc = &vga_console_vc;
vh = &vc->hdl;
if (vgaconsole) {
bus_space_unmap(vh->vh_iot, vh->vh_ioh_vga, 0x10);
bus_space_unmap(vh->vh_iot, vh->vh_ioh_6845, 0x10);
return 1;
}
return 0;
}
int
vga_is_console(bus_space_tag_t iot, int type)
{
#ifdef __i386__
struct device *dv;
deviter_t di;
struct vesafb_softc *vesafb;
for (dv = deviter_first(&di, 0); dv != NULL; dv = deviter_next(&di)) {
if (device_is_a(dv, "vesafb")) {
vesafb = device_private(dv);
if (vesafb->sc_isconsole) {
deviter_release(&di);
return (0);
}
}
}
deviter_release(&di);
#endif
if (vgaconsole &&
!vga_console_attached &&
iot == vga_console_vc.hdl.vh_iot &&
(vga_console_type == -1 || (type == vga_console_type)))
return (1);
return (0);
}
static int
vga_get_video(struct vga_config *vc)
{
return (vga_ts_read(&vc->hdl, mode) & VGA_TS_MODE_BLANK) == 0;
}
static void
vga_set_video(struct vga_config *vc, int state)
{
int val;
vga_ts_write(&vc->hdl, syncreset, 0x01);
if (state) { /* unblank screen */
val = vga_ts_read(&vc->hdl, mode);
vga_ts_write(&vc->hdl, mode, val & ~VGA_TS_MODE_BLANK);
#ifndef VGA_NO_VBLANK
val = vga_6845_read(&vc->hdl, mode);
vga_6845_write(&vc->hdl, mode, val | 0x80);
#endif
} else { /* blank screen */
val = vga_ts_read(&vc->hdl, mode);
vga_ts_write(&vc->hdl, mode, val | VGA_TS_MODE_BLANK);
#ifndef VGA_NO_VBLANK
val = vga_6845_read(&vc->hdl, mode);
vga_6845_write(&vc->hdl, mode, val & ~0x80);
#endif
}
vga_ts_write(&vc->hdl, syncreset, 0x03);
}
int
vga_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l)
{
struct vga_config *vc = v;
struct vgascreen *scr = vs;
const struct vga_funcs *vf = vc->vc_funcs;
switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(int *)data = vc->vc_type;
return 0;
case WSDISPLAYIO_GINFO:
/* XXX should get detailed hardware information here */
return EPASSTHROUGH;
case WSDISPLAYIO_GVIDEO:
*(int *)data = (vga_get_video(vc) ?
WSDISPLAYIO_VIDEO_ON : WSDISPLAYIO_VIDEO_OFF);
return 0;
case WSDISPLAYIO_SVIDEO:
vga_set_video(vc, *(int *)data == WSDISPLAYIO_VIDEO_ON);
return 0;
case WSDISPLAYIO_GETWSCHAR:
KASSERT(scr != NULL);
return pcdisplay_getwschar(&scr->pcs,
(struct wsdisplay_char *)data);
case WSDISPLAYIO_PUTWSCHAR:
KASSERT(scr != NULL);
return pcdisplay_putwschar(&scr->pcs,
(struct wsdisplay_char *)data);
#ifdef WSDISPLAY_CUSTOM_BORDER
case WSDISPLAYIO_GBORDER:
return (vga_getborder(vc, (u_int *)data));
case WSDISPLAYIO_SBORDER:
return (vga_setborder(vc, *(u_int *)data));
#endif
case WSDISPLAYIO_GETCMAP:
case WSDISPLAYIO_PUTCMAP:
case WSDISPLAYIO_GCURPOS:
case WSDISPLAYIO_SCURPOS:
case WSDISPLAYIO_GCURMAX:
case WSDISPLAYIO_GCURSOR:
case WSDISPLAYIO_SCURSOR:
/* NONE of these operations are by the generic VGA driver. */
return EPASSTHROUGH;
}
if (vc->vc_funcs == NULL)
return (EPASSTHROUGH);
if (vf->vf_ioctl == NULL)
return (EPASSTHROUGH);
return ((*vf->vf_ioctl)(v, cmd, data, flag, l));
}
static paddr_t
vga_mmap(void *v, void *vs, off_t offset, int prot)
{
struct vga_config *vc = v;
const struct vga_funcs *vf = vc->vc_funcs;
if (vc->vc_funcs == NULL)
return (-1);
if (vf->vf_mmap == NULL)
return (-1);
return ((*vf->vf_mmap)(v, offset, prot));
}
int
vga_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep,
int *curxp, int *curyp, long *defattrp)
{
struct vga_config *vc = v;
struct vgascreen *scr;
if (vc->nscreens == 1) {
struct vgascreen *scr1 = vc->screens.lh_first;
/*
* When allocating the second screen, get backing store
* for the first one too.
* XXX We could be more clever and use video RAM.
*/
scr1->pcs.mem =
malloc(scr1->pcs.type->ncols * scr1->pcs.type->nrows * 2,
M_DEVBUF, M_WAITOK);
}
scr = malloc(sizeof(struct vgascreen), M_DEVBUF, M_WAITOK);
vga_init_screen(vc, scr, type, vc->nscreens == 0, defattrp);
if (vc->nscreens > 1) {
scr->pcs.mem = malloc(type->ncols * type->nrows * 2,
M_DEVBUF, M_WAITOK);
pcdisplay_eraserows(&scr->pcs, 0, type->nrows, *defattrp);
}
*cookiep = scr;
*curxp = scr->pcs.cursorcol;
*curyp = scr->pcs.cursorrow;
return (0);
}
void
vga_free_screen(void *v, void *cookie)
{
struct vgascreen *vs = cookie;
struct vga_config *vc = vs->cfg;
LIST_REMOVE(vs, next);
vc->nscreens--;
if (vs->fontset1)
egavga_unreffont(vc, vs->fontset1);
if (vs->fontset2)
egavga_unreffont(vc, vs->fontset2);
if (vs != &vga_console_screen)
free(vs, M_DEVBUF);
else
panic("vga_free_screen: console");
if (vc->active == vs)
vc->active = 0;
}
static void vga_usefont(struct vga_config *, struct egavga_font *);
static void
vga_usefont(struct vga_config *vc, struct egavga_font *f)
{
int slot;
struct egavga_font *of;
if (f->slot != -1)
goto toend;
for (slot = 0; slot < vc->vc_nfontslots; slot++) {
if (!vc->vc_fonts[slot])
goto loadit;
}
/* have to kick out another one */
TAILQ_FOREACH(of, &vc->vc_fontlist, next) {
if (of->slot != -1) {
KASSERT(vc->vc_fonts[of->slot] == of);
slot = of->slot;
of->slot = -1;
goto loadit;
}
}
panic("vga_usefont");
loadit:
vga_loadchars(&vc->hdl, slot, f->wsfont->firstchar,
f->wsfont->numchars, f->wsfont->fontheight, f->wsfont->data);
f->slot = slot;
vc->vc_fonts[slot] = f;
toend:
TAILQ_REMOVE(&vc->vc_fontlist, f, next);
TAILQ_INSERT_TAIL(&vc->vc_fontlist, f, next);
}
static void
vga_setfont(struct vga_config *vc, struct vgascreen *scr)
{
int fontslot1, fontslot2;
if (scr->fontset1)
vga_usefont(vc, scr->fontset1);
if (scr->fontset2)
vga_usefont(vc, scr->fontset2);
fontslot1 = (scr->fontset1 ? scr->fontset1->slot : 0);
fontslot2 = (scr->fontset2 ? scr->fontset2->slot : fontslot1);
if (vc->currentfontset1 != fontslot1 ||
vc->currentfontset2 != fontslot2) {
vga_setfontset(&vc->hdl, fontslot1, fontslot2);
vc->currentfontset1 = fontslot1;
vc->currentfontset2 = fontslot2;
}
}
int
vga_show_screen(void *v, void *cookie, int waitok,
void (*cb)(void *, int, int), void *cbarg)
{
struct vgascreen *scr = cookie, *oldscr;
struct vga_config *vc = scr->cfg;
oldscr = vc->active; /* can be NULL! */
if (scr == oldscr) {
return (0);
}
vc->wantedscreen = cookie;
vc->switchcb = cb;
vc->switchcbarg = cbarg;
if (cb) {
callout_reset(&vc->vc_switch_callout, 0,
(void(*)(void *))vga_doswitch, vc);
return (EAGAIN);
}
vga_doswitch(vc);
return (0);
}
void
vga_doswitch(struct vga_config *vc)
{
struct vgascreen *scr, *oldscr;
struct vga_handle *vh = &vc->hdl;
const struct wsscreen_descr *type;
scr = vc->wantedscreen;
if (!scr) {
printf("vga_doswitch: disappeared\n");
(*vc->switchcb)(vc->switchcbarg, EIO, 0);
return;
}
type = scr->pcs.type;
oldscr = vc->active; /* can be NULL! */
#ifdef DIAGNOSTIC
if (oldscr) {
if (!oldscr->pcs.active)
panic("vga_show_screen: not active");
if (oldscr->pcs.type != vc->currenttype)
panic("vga_show_screen: bad type");
}
#endif
if (scr == oldscr) {
return;
}
#ifdef DIAGNOSTIC
if (scr->pcs.active)
panic("vga_show_screen: active");
#endif
if (oldscr) {
const struct wsscreen_descr *oldtype = oldscr->pcs.type;
oldscr->pcs.active = 0;
bus_space_read_region_2(vh->vh_memt, vh->vh_memh,
oldscr->pcs.dispoffset, oldscr->pcs.mem,
oldtype->ncols * oldtype->nrows);
}
if (vc->currenttype != type) {
vga_setscreentype(vh, type);
vc->currenttype = type;
}
vga_setfont(vc, scr);
/* XXX swich colours! */
scr->pcs.visibleoffset = scr->pcs.dispoffset = scr->mindispoffset;
if (!oldscr || (scr->pcs.dispoffset != oldscr->pcs.dispoffset)) {
vga_6845_write(vh, startadrh, scr->pcs.dispoffset >> 9);
vga_6845_write(vh, startadrl, scr->pcs.dispoffset >> 1);
}
bus_space_write_region_2(vh->vh_memt, vh->vh_memh,
scr->pcs.dispoffset, scr->pcs.mem, type->ncols * type->nrows);
scr->pcs.active = 1;
vc->active = scr;
pcdisplay_cursor(&scr->pcs, scr->pcs.cursoron,
scr->pcs.cursorrow, scr->pcs.cursorcol);
vc->wantedscreen = 0;
if (vc->switchcb)
(*vc->switchcb)(vc->switchcbarg, 0, 0);
}
static int
vga_load_font(void *v, void *cookie, struct wsdisplay_font *data)
{
struct vga_config *vc = v;
struct vgascreen *scr = cookie;
char *name2;
int res;
if (scr) {
name2 = NULL;
if (data->name) {
name2 = strchr(data->name, ',');
if (name2)
*name2++ = '\0';
}
res = vga_selectfont(vc, scr, data->name, name2);
if (!res && scr->pcs.active)
vga_setfont(vc, scr);
return (res);
}
return (0);
}
static int
vga_allocattr(void *id, int fg, int bg, int flags, long *attrp)
{
struct vgascreen *scr = id;
struct vga_config *vc = scr->cfg;
if (__predict_false((unsigned int)fg >= sizeof(fgansitopc) ||
(unsigned int)bg >= sizeof(bgansitopc)))
return (EINVAL);
if (vc->hdl.vh_mono) {
if (flags & WSATTR_WSCOLORS)
return (EINVAL);
if (flags & WSATTR_REVERSE)
*attrp = 0x70;
else
*attrp = 0x07;
if (flags & WSATTR_UNDERLINE)
*attrp |= FG_UNDERLINE;
if (flags & WSATTR_HILIT)
*attrp |= FG_INTENSE;
} else {
if (flags & (WSATTR_UNDERLINE | WSATTR_REVERSE))
return (EINVAL);
if (flags & WSATTR_WSCOLORS)
*attrp = fgansitopc[fg] | bgansitopc[bg];
else
*attrp = 7;
if (flags & WSATTR_HILIT)
*attrp += 8;
}
if (flags & WSATTR_BLINK)
*attrp |= FG_BLINK;
return (0);
}
static void
vga_copyrows(void *id, int srcrow, int dstrow, int nrows)
{
struct vgascreen *scr = id;
bus_space_tag_t memt = scr->pcs.hdl->ph_memt;
bus_space_handle_t memh = scr->pcs.hdl->ph_memh;
int ncols = scr->pcs.type->ncols;
bus_size_t srcoff, dstoff;
srcoff = srcrow * ncols + 0;
dstoff = dstrow * ncols + 0;
if (scr->pcs.active) {
if (dstrow == 0 && (srcrow + nrows == scr->pcs.type->nrows)) {
#ifdef PCDISPLAY_SOFTCURSOR
int cursoron = scr->pcs.cursoron;
if (cursoron)
pcdisplay_cursor(&scr->pcs, 0,
scr->pcs.cursorrow, scr->pcs.cursorcol);
#endif
/* scroll up whole screen */
if ((scr->pcs.dispoffset + srcrow * ncols * 2)
<= scr->maxdispoffset) {
scr->pcs.dispoffset += srcrow * ncols * 2;
} else {
bus_space_copy_region_2(memt, memh,
scr->pcs.dispoffset + srcoff * 2,
memh, scr->mindispoffset, nrows * ncols);
scr->pcs.dispoffset = scr->mindispoffset;
}
vga_6845_write(&scr->cfg->hdl, startadrh,
scr->pcs.dispoffset >> 9);
vga_6845_write(&scr->cfg->hdl, startadrl,
scr->pcs.dispoffset >> 1);
#ifdef PCDISPLAY_SOFTCURSOR
if (cursoron)
pcdisplay_cursor(&scr->pcs, 1,
scr->pcs.cursorrow, scr->pcs.cursorcol);
#endif
} else {
bus_space_copy_region_2(memt, memh,
scr->pcs.dispoffset + srcoff * 2,
memh, scr->pcs.dispoffset + dstoff * 2,
nrows * ncols);
}
} else
memcpy(&scr->pcs.mem[dstoff], &scr->pcs.mem[srcoff],
nrows * ncols * 2);
}
#ifdef WSCONS_SUPPORT_PCVTFONTS
#define NOTYET 0xffff
static const u_int16_t pcvt_unichars[0xa0] = {
/* 0 */ _e006U, /* N/L control */
NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET,
NOTYET,
0x2409, /* SYMBOL FOR HORIZONTAL TABULATION */
0x240a, /* SYMBOL FOR LINE FEED */
0x240b, /* SYMBOL FOR VERTICAL TABULATION */
0x240c, /* SYMBOL FOR FORM FEED */
0x240d, /* SYMBOL FOR CARRIAGE RETURN */
NOTYET, NOTYET,
/* 1 */ NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET,
NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET,
/* 2 */ NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET,
NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET,
/* 3 */ NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET,
NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET, NOTYET,
/* 4 */ 0x03c1, /* GREEK SMALL LETTER RHO */
0x03c8, /* GREEK SMALL LETTER PSI */
0x2202, /* PARTIAL DIFFERENTIAL */
0x03bb, /* GREEK SMALL LETTER LAMDA */
0x03b9, /* GREEK SMALL LETTER IOTA */
0x03b7, /* GREEK SMALL LETTER ETA */
0x03b5, /* GREEK SMALL LETTER EPSILON */
0x03c7, /* GREEK SMALL LETTER CHI */
0x2228, /* LOGICAL OR */
0x2227, /* LOGICAL AND */
0x222a, /* UNION */
0x2283, /* SUPERSET OF */
0x2282, /* SUBSET OF */
0x03a5, /* GREEK CAPITAL LETTER UPSILON */
0x039e, /* GREEK CAPITAL LETTER XI */
0x03a8, /* GREEK CAPITAL LETTER PSI */
/* 5 */ 0x03a0, /* GREEK CAPITAL LETTER PI */
0x21d2, /* RIGHTWARDS DOUBLE ARROW */
0x21d4, /* LEFT RIGHT DOUBLE ARROW */
0x039b, /* GREEK CAPITAL LETTER LAMDA */
0x0398, /* GREEK CAPITAL LETTER THETA */
0x2243, /* ASYMPTOTICALLY EQUAL TO */
0x2207, /* NABLA */
0x2206, /* INCREMENT */
0x221d, /* PROPORTIONAL TO */
0x2234, /* THEREFORE */
0x222b, /* INTEGRAL */
0x2215, /* DIVISION SLASH */
0x2216, /* SET MINUS */
_e00eU, /* angle? */
_e00dU, /* inverted angle? */
_e00bU, /* braceleftmid */
/* 6 */ _e00cU, /* bracerightmid */
_e007U, /* bracelefttp */
_e008U, /* braceleftbt */
_e009U, /* bracerighttp */
_e00aU, /* bracerightbt */
0x221a, /* SQUARE ROOT */
0x03c9, /* GREEK SMALL LETTER OMEGA */
0x00a5, /* YEN SIGN */
0x03be, /* GREEK SMALL LETTER XI */
0x00fd, /* LATIN SMALL LETTER Y WITH ACUTE */
0x00fe, /* LATIN SMALL LETTER THORN */
0x00f0, /* LATIN SMALL LETTER ETH */
0x00de, /* LATIN CAPITAL LETTER THORN */
0x00dd, /* LATIN CAPITAL LETTER Y WITH ACUTE */
0x00d7, /* MULTIPLICATION SIGN */
0x00d0, /* LATIN CAPITAL LETTER ETH */
/* 7 */ 0x00be, /* VULGAR FRACTION THREE QUARTERS */
0x00b8, /* CEDILLA */
0x00b4, /* ACUTE ACCENT */
0x00af, /* MACRON */
0x00ae, /* REGISTERED SIGN */
0x00ad, /* SOFT HYPHEN */
0x00ac, /* NOT SIGN */
0x00a8, /* DIAERESIS */
0x2260, /* NOT EQUAL TO */
_e005U, /* scan 9 */
_e004U, /* scan 7 */
_e003U, /* scan 5 */
_e002U, /* scan 3 */
_e001U, /* scan 1 */
0x03c5, /* GREEK SMALL LETTER UPSILON */
0x00f8, /* LATIN SMALL LETTER O WITH STROKE */
/* 8 */ 0x0153, /* LATIN SMALL LIGATURE OE */
0x00f5, /* LATIN SMALL LETTER O WITH TILDE !!!doc bug */
0x00e3, /* LATIN SMALL LETTER A WITH TILDE */
0x0178, /* LATIN CAPITAL LETTER Y WITH DIAERESIS */
0x00db, /* LATIN CAPITAL LETTER U WITH CIRCUMFLEX */
0x00da, /* LATIN CAPITAL LETTER U WITH ACUTE */
0x00d9, /* LATIN CAPITAL LETTER U WITH GRAVE */
0x00d8, /* LATIN CAPITAL LETTER O WITH STROKE */
0x0152, /* LATIN CAPITAL LIGATURE OE */
0x00d5, /* LATIN CAPITAL LETTER O WITH TILDE */
0x00d4, /* LATIN CAPITAL LETTER O WITH CIRCUMFLEX */
0x00d3, /* LATIN CAPITAL LETTER O WITH ACUTE */
0x00d2, /* LATIN CAPITAL LETTER O WITH GRAVE */
0x00cf, /* LATIN CAPITAL LETTER I WITH DIAERESIS */
0x00ce, /* LATIN CAPITAL LETTER I WITH CIRCUMFLEX */
0x00cd, /* LATIN CAPITAL LETTER I WITH ACUTE */
/* 9 */ 0x00cc, /* LATIN CAPITAL LETTER I WITH GRAVE */
0x00cb, /* LATIN CAPITAL LETTER E WITH DIAERESIS */
0x00ca, /* LATIN CAPITAL LETTER E WITH CIRCUMFLEX */
0x00c8, /* LATIN CAPITAL LETTER E WITH GRAVE */
0x00c3, /* LATIN CAPITAL LETTER A WITH TILDE */
0x00c2, /* LATIN CAPITAL LETTER A WITH CIRCUMFLEX */
0x00c1, /* LATIN CAPITAL LETTER A WITH ACUTE */
0x00c0, /* LATIN CAPITAL LETTER A WITH GRAVE */
0x00b9, /* SUPERSCRIPT ONE */
0x00b7, /* MIDDLE DOT */
0x03b6, /* GREEK SMALL LETTER ZETA */
0x00b3, /* SUPERSCRIPT THREE */
0x00a9, /* COPYRIGHT SIGN */
0x00a4, /* CURRENCY SIGN */
0x03ba, /* GREEK SMALL LETTER KAPPA */
_e000U /* mirrored question mark? */
};
static int vga_pcvt_mapchar(int, u_int *);
static int
vga_pcvt_mapchar(int uni, u_int *index)
{
int i;
for (i = 0; i < 0xa0; i++) /* 0xa0..0xff are reserved */
if (uni == pcvt_unichars[i]) {
*index = i;
return (5);
}
*index = 0x99; /* middle dot */
return (0);
}
#endif /* WSCONS_SUPPORT_PCVTFONTS */
#ifdef WSCONS_SUPPORT_ISO7FONTS
static int
vga_iso7_mapchar(int uni, u_int *index)
{
/*
* U+0384 (GREEK TONOS) to
* U+03ce (GREEK SMALL LETTER OMEGA WITH TONOS)
* map directly to the iso-9 font
*/
if (uni >= 0x0384 && uni <= 0x03ce) {
/* U+0384 is at offset 0xb4 in the font */
*index = uni - 0x0384 + 0xb4;
return (5);
}
/* XXX more chars in the iso-9 font */
*index = 0xa4; /* shaded rectangle */
return (0);
}
#endif /* WSCONS_SUPPORT_ISO7FONTS */
static int _vga_mapchar(void *, const struct egavga_font *, int, u_int *);
static int
_vga_mapchar(void *id, const struct egavga_font *font, int uni, u_int *index)
{
switch (font->wsfont->encoding) {
case WSDISPLAY_FONTENC_ISO:
if (uni < 256) {
*index = uni;
return (5);
} else {
*index = ' ';
return (0);
}
case WSDISPLAY_FONTENC_IBM:
return (pcdisplay_mapchar(id, uni, index));
#ifdef WSCONS_SUPPORT_PCVTFONTS
case WSDISPLAY_FONTENC_PCVT:
return (vga_pcvt_mapchar(uni, index));
#endif
#ifdef WSCONS_SUPPORT_ISO7FONTS
case WSDISPLAY_FONTENC_ISO7:
return (vga_iso7_mapchar(uni, index));
#endif
default:
#ifdef VGAFONTDEBUG
printf("_vga_mapchar: encoding=%d\n", font->wsfont->encoding);
#endif
*index = ' ';
return (0);
}
}
static int
vga_mapchar(void *id, int uni, u_int *index)
{
struct vgascreen *scr = id;
u_int idx1, idx2;
int res1, res2;
res1 = 0;
idx1 = ' '; /* space */
if (scr->fontset1)
res1 = _vga_mapchar(id, scr->fontset1, uni, &idx1);
res2 = -1;
if (scr->fontset2) {
KASSERT(VGA_SCREEN_CANTWOFONTS(scr->pcs.type));
res2 = _vga_mapchar(id, scr->fontset2, uni, &idx2);
}
if (res2 > res1) {
*index = idx2 | 0x0800; /* attribute bit 3 */
return (res2);
}
*index = idx1;
return (res1);
}
#ifdef WSDISPLAY_SCROLLSUPPORT
void
vga_scroll(void *v, void *cookie, int lines)
{
struct vga_config *vc = v;
struct vgascreen *scr = cookie;
struct vga_handle *vh = &vc->hdl;
if (lines == 0) {
if (scr->pcs.visibleoffset == scr->pcs.dispoffset)
return;
scr->pcs.visibleoffset = scr->pcs.dispoffset;
}
else {
int vga_scr_end;
int margin = scr->pcs.type->ncols * 2;
int ul, we, p, st;
vga_scr_end = (scr->pcs.dispoffset + scr->pcs.type->ncols *
scr->pcs.type->nrows * 2);
if (scr->vga_rollover > vga_scr_end + margin) {
ul = vga_scr_end;
we = scr->vga_rollover + scr->pcs.type->ncols * 2;
} else {
ul = 0;
we = 0x8000;
}
p = (scr->pcs.visibleoffset - ul + we) % we + lines *
(scr->pcs.type->ncols * 2);
st = (scr->pcs.dispoffset - ul + we) % we;
if (p < margin)
p = 0;
if (p > st - margin)
p = st;
scr->pcs.visibleoffset = (p + ul) % we;
}
vga_6845_write(vh, startadrh, scr->pcs.visibleoffset >> 9);
vga_6845_write(vh, startadrl, scr->pcs.visibleoffset >> 1);
}
#endif
void
vga_putchar(void *c, int row, int col, u_int uc, long attr)
{
pcdisplay_putchar(c, row, col, uc, attr);
}
#ifdef WSDISPLAY_CUSTOM_BORDER
static int
vga_getborder(struct vga_config *vc, u_int *valuep)
{
struct vga_handle *vh = &vc->hdl;
u_int idx;
u_int8_t value;
if (vh->vh_mono)
return ENODEV;
value = _vga_attr_read(vh, VGA_ATC_OVERSCAN);
for (idx = 0; idx < sizeof(fgansitopc); idx++) {
if (fgansitopc[idx] == value) {
*valuep = idx;
return (0);
}
}
return (EIO);
}
static int
vga_setborder(struct vga_config *vc, u_int value)
{
struct vga_handle *vh = &vc->hdl;
if (vh->vh_mono)
return ENODEV;
if (value >= sizeof(fgansitopc))
return EINVAL;
_vga_attr_write(vh, VGA_ATC_OVERSCAN, fgansitopc[value]);
return (0);
}
#endif /* WSDISPLAY_CUSTOM_BORDER */
void
vga_resume(struct vga_softc *sc)
{
#ifdef VGA_RESET_ON_RESUME
vga_initregs(&sc->sc_vc->hdl);
#endif
}