/*
* RETINA_SPEED_HACK code seems to work on some boards and on others
* it causes text to smear horizontally
*/
void
rh_scroll(struct ite_softc *ip, int sy, int sx, int count, int dir)
{
#ifndef RETINA_SPEED_HACK
u_long *fb = (u_long *)__UNVOLATILE(ip->grf->g_fbkva);
#endif
rh_cursor(ip, ERASE_CURSOR);
if (dir == SCROLL_UP) {
#ifdef RETINA_SPEED_HACK
screen_up(ip, sy - count, ip->bottom_margin, count);
#else
bcopy(fb + sy * ip->cols, fb + (sy - count) * ip->cols,
4 * (ip->bottom_margin - sy + 1) * ip->cols);
rh_clear(ip, ip->bottom_margin + 1 - count, 0, count, ip->cols);
#endif
} else if (dir == SCROLL_DOWN) {
#ifdef RETINA_SPEED_HACK
screen_down(ip, sy, ip->bottom_margin, count);
#else
bcopy(fb + sy * ip->cols, fb + (sy + count) * ip->cols,
4 * (ip->bottom_margin - sy - count + 1) * ip->cols);
rh_clear(ip, sy, 0, count, ip->cols);
#endif
} else if (dir == SCROLL_RIGHT) {
RZ3AlphaCopy(ip->grf, sx, sy, sx + count, sy,
ip->cols - (sx + count), 1);
RZ3AlphaErase(ip->grf, sx, sy, count, 1);
} else {
RZ3AlphaCopy(ip->grf, sx + count, sy, sx, sy,
ip->cols - (sx + count), 1);
RZ3AlphaErase(ip->grf, ip->cols - count, sy, count, 1);
}
#ifndef RETINA_SPEED_HACK
rh_cursor(ip, !ERASE_CURSOR);
#endif
}
sfb_cold_init(
int unit,
user_info_t *up)
{
sfb_softc_t *sfb;
screen_softc_t sc = screen(unit);
vm_offset_t base = tc_probe("sfb");
int hor_p, ver_p;
boolean_t makes_sense;
bcopy(&sfb_sw, &sc->sw, sizeof(sc->sw));
sc->flags |= COLOR_SCREEN;
/*
* I am confused here by the documentation. One document
* sez there are three boards:
* "PMAGB-BA" can do 1280x1024 @66Hz or @72Hz
* "PMAGB-BC" can do 1024x864 @60Hz or 1280x1024 @72Hz
* "PMAGB-BE" can do 1024x768 @72Hz or 1280x1024 @72Hz
* Another document sez things differently:
* "PMAGB-BB" can do 1024x768 @72Hz
* "PMAGB-BD" can do 1024x864 @60Hz or 1280x1024 @72Hz
*
* I would be inclined to believe the first one, which came
* with an actual piece of hardware attached (a PMAGB-BA).
* But I could swear I got a first board (which blew up
* instantly) and it was calling itself PMAGB-BB...
*
* Since I have not seen any other hardware I will make
* this code as hypothetical as I can. Should work :-))
*/
makes_sense = FALSE;
{
sfb_regs *regs;
regs = (sfb_regs *) ((char *)base + SFB_OFFSET_REGS);
hor_p = (regs->vhor_setup & 0x1ff) * 4;
ver_p = regs->vvert_setup & 0x7ff;
if (((hor_p == 1280) && (ver_p == 1024)) ||
((hor_p == 1024) && (ver_p == 864)) ||
((hor_p == 1024) && (ver_p == 768)))
makes_sense = TRUE;
}
if (makes_sense) {
sc->frame_scanline_width = hor_p;
sc->frame_height = ver_p;
sc->frame_visible_width = hor_p;
sc->frame_visible_height = ver_p;
} else {
sc->frame_scanline_width = 1280;
sc->frame_height = 1024;
sc->frame_visible_width = 1280;
sc->frame_visible_height = 1024;
}
pm_init_screen_params(sc,up);
(void) screen_up(unit, up);
sfb = pm_alloc( unit, sparsify(base + SFB_OFFSET_BT459),
base + SFB_OFFSET_VRAM, -1);
screen_default_colors(up);
sfb_soft_reset(sc);
/*
* Clearing the screen at boot saves from scrolling
* much, and speeds up booting quite a bit.
*/
screen_blitc( unit, 'C'-'@');/* clear screen */
}