/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)cgsix.c 8.4 (Berkeley) 1/21/94
*/
/*
* color display (cgsix) driver.
*
* Does not handle interrupts, even though they can occur.
*
* XXX should defer colormap updates to vertical retrace interrupts
*/
/*
* cg6 accelerated console routines.
*
* Note that buried in this code in several places is the assumption
* that pixels are exactly one byte wide. Since this is cg6-specific
* code, this seems safe. This assumption resides in things like the
* use of ri_emuwidth without messing around with ri_pelbytes, or the
* assumption that ri_font->fontwidth is the right thing to multiply
* character-cell counts by to get byte counts.
*/
/*
* Run a blitter command
*/
#define CG6_BLIT(f) { (void)f->fbc_blit; }
/*
* Run a drawing command
*/
#define CG6_DRAW(f) { (void)f->fbc_draw; }
/*
* Wait for the whole engine to go idle. This may not matter in our case;
* I'm not sure whether blits are actually queued or not. It more likely
* is intended for lines and such that do get queued.
* 0x10000000 bit: GX_INPROGRESS
*/
#define CG6_DRAIN(fbc) do { \
while ((fbc)->fbc_s & GX_INPROGRESS) \
/*EMPTY*/; \
} while (0)
/*
* something is missing here
* Waiting for GX_FULL to clear should be enough to send another command
* but some CG6 ( LX onboard for example ) lock up if we do that while
* it works fine on others ( a 4MB TGX+ I've got here )
* So, until I figure out what's going on we wait for the blitter to go
* fully idle.
*/
#define CG6_WAIT_READY(fbc) do { \
while (((fbc)->fbc_s & GX_INPROGRESS/*GX_FULL*/) != 0) \
/*EMPTY*/; \
} while (0)
if (ri->ri_flg & RI_CURSOR) {
wi = ri->ri_font->fontwidth;
he = ri->ri_font->fontheight;
x = ri->ri_ccol * wi + ri->ri_xorigin;
y = ri->ri_crow * he + ri->ri_yorigin;
cg6_invert(sc, x, y, wi, he);
ri->ri_flg &= ~RI_CURSOR;
}
}
if(isconsole) {
/* we mess with cg6_console_screen only once */
vcons_init_screen(&sc->vd, &cg6_console_screen, 1,
&defattr);
sc->sc_bg = (defattr >> 16) & 0xf; /* yes, this is an index into devcmap */
/*
* XXX
* Is this actually necessary? We're going to use the blitter later on anyway.
*/
/* We need unaccelerated initial screen clear on old revisions */
if (sc->sc_fhcrev < 2) {
memset(sc->sc_fb.fb_pixels, ri->ri_devcmap[sc->sc_bg],
sc->sc_stride * sc->sc_height);
} else
cgsix_clearscreen(sc);
case FBIOGETCMAP:
#define p ((struct fbcmap *)data)
return (bt_getcmap(p, &sc->sc_cmap, 256, 1));
case FBIOPUTCMAP:
/* copy to software map */
error = bt_putcmap(p, &sc->sc_cmap, 256, 1);
if (error)
return error;
/* now blast them into the chip */
/* XXX should use retrace interrupt */
cg6_loadcmap(sc, p->index, p->count);
#undef p
break;
case FBIOGVIDEO:
*(int *)data = sc->sc_blanked;
break;
case FBIOSVIDEO:
cg6_blank(sc, !(*(int *)data));
break;
/* these are for both FBIOSCURSOR and FBIOGCURSOR */
#define p ((struct fbcursor *)data)
#define cc (&sc->sc_cursor)
case FBIOGCURSOR:
/* do not quite want everything here... */
p->set = FB_CUR_SETALL; /* close enough, anyway */
p->enable = cc->cc_enable;
p->pos = cc->cc_pos;
p->hot = cc->cc_hot;
p->size = cc->cc_size;
/* begin ugh ... can we lose some of this crap?? */
if (p->image != NULL) {
count = cc->cc_size.y * 32 / NBBY;
error = copyout(cc->cc_bits[1], p->image, count);
if (error)
return error;
error = copyout(cc->cc_bits[0], p->mask, count);
if (error)
return error;
}
if (p->cmap.red != NULL) {
error = bt_getcmap(&p->cmap,
(union bt_cmap *)&cc->cc_color, 2, 1);
if (error)
return error;
} else {
p->cmap.index = 0;
p->cmap.count = 2;
}
/* end ugh */
break;
case FBIOSCURSOR:
/*
* For setcmap and setshape, verify parameters, so that
* we do not get halfway through an update and then crap
* out with the software state screwed up.
*/
v = p->set;
if (v & FB_CUR_SETCMAP) {
/*
* This use of a temporary copy of the cursor
* colormap is not terribly efficient, but these
* copies are small (8 bytes)...
*/
tcm = cc->cc_color;
error = bt_putcmap(&p->cmap, (union bt_cmap *)&tcm, 2,
1);
if (error)
return error;
}
if (v & FB_CUR_SETSHAPE) {
if ((u_int)p->size.x > 32 || (u_int)p->size.y > 32)
return EINVAL;
count = p->size.y * 32 / NBBY;
error = copyin(p->image, image, count);
if (error)
return error;
error = copyin(p->mask, mask, count);
if (error)
return error;
}
/* parameters are OK; do it */
if (v & (FB_CUR_SETCUR | FB_CUR_SETPOS | FB_CUR_SETHOT)) {
if (v & FB_CUR_SETCUR)
cc->cc_enable = p->enable;
if (v & FB_CUR_SETPOS)
cc->cc_pos = p->pos;
if (v & FB_CUR_SETHOT)
cc->cc_hot = p->hot;
cg6_setcursor(sc);
}
if (v & FB_CUR_SETCMAP) {
cc->cc_color = tcm;
cg6_loadomap(sc); /* XXX defer to vertical retrace */
}
if (v & FB_CUR_SETSHAPE) {
cc->cc_size = p->size;
count = p->size.y * 32 / NBBY;
memset(cc->cc_bits, 0, sizeof cc->cc_bits);
memcpy(cc->cc_bits[1], image, count);
memcpy(cc->cc_bits[0], mask, count);
cg6_loadcursor(sc);
}
break;
#undef p
#undef cc
case FBIOGCURPOS:
*(struct fbcurpos *)data = sc->sc_cursor.cc_pos;
break;
case FBIOSCURPOS:
sc->sc_cursor.cc_pos = *(struct fbcurpos *)data;
cg6_setcursor(sc);
break;
case FBIOGCURMAX:
/* max cursor size is 32x32 */
((struct fbcurpos *)data)->x = 32;
((struct fbcurpos *)data)->y = 32;
break;
/*
* Clean up hardware state (e.g., after bootup or after X crashes).
*/
static void
cg6_reset(struct cgsix_softc *sc)
{
volatile struct cg6_tec_xxx *tec;
int fhc;
volatile struct bt_regs *bt;
/* hide the cursor, just in case */
sc->sc_thc->thc_cursxy = (THC_CURSOFF << 16) | THC_CURSOFF;
/* take care of hardware bugs in old revisions */
if (sc->sc_fhcrev < 5) {
/*
* Keep current resolution; set CPU to 68020, set test
* window (size 1Kx1K), and for rev 1, disable dest cache.
*/
fhc = (*sc->sc_fhc & FHC_RES_MASK) | FHC_CPU_68020 |
FHC_TEST |
(11 << FHC_TESTX_SHIFT) | (11 << FHC_TESTY_SHIFT);
if (sc->sc_fhcrev < 2)
fhc |= FHC_DST_DISABLE;
*sc->sc_fhc = fhc;
}
/* we need to subtract the hot-spot value here */
#define COORD(f) (sc->sc_cursor.cc_pos.f - sc->sc_cursor.cc_hot.f)
sc->sc_thc->thc_cursxy = sc->sc_cursor.cc_enable ?
((COORD(x) << 16) | (COORD(y) & 0xffff)) :
(THC_CURSOFF << 16) | THC_CURSOFF;
#undef COORD
}
static void
cg6_loadcursor(struct cgsix_softc *sc)
{
volatile struct cg6_thc *thc;
u_int edgemask, m;
int i;
/*
* Keep the top size.x bits. Here we *throw out* the top
* size.x bits from an all-one-bits word, introducing zeros in
* the top size.x bits, then invert all the bits to get what
* we really wanted as our mask. But this fails if size.x is
* 32---a sparc uses only the low 5 bits of the shift count---
* so we have to special case that.
*/
edgemask = ~0;
if (sc->sc_cursor.cc_size.x < 32)
edgemask = ~(edgemask >> sc->sc_cursor.cc_size.x);
thc = sc->sc_thc;
for (i = 0; i < 32; i++) {
m = sc->sc_cursor.cc_bits[0][i] & edgemask;
thc->thc_cursmask[i] = m;
thc->thc_cursbits[i] = m & sc->sc_cursor.cc_bits[1][i];
}
}
/*
* Load a subset of the current (new) colormap into the color DAC.
*/
static void
cg6_loadcmap(struct cgsix_softc *sc, int start, int ncolors)
{
volatile struct bt_regs *bt;
u_int *ip, i;
int count;
ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */
count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
bt = sc->sc_bt;
bt->bt_addr = BT_D4M4(start) << 24;
while (--count >= 0) {
i = *ip++;
/* hardware that makes one want to pound boards with hammers */
bt->bt_cmap = i;
bt->bt_cmap = i << 8;
bt->bt_cmap = i << 16;
bt->bt_cmap = i << 24;
}
}
bt = sc->sc_bt;
bt->bt_addr = 0x01 << 24; /* set background color */
i = sc->sc_cursor.cc_color.cm_chip[0];
bt->bt_omap = i; /* R */
bt->bt_omap = i << 8; /* G */
bt->bt_omap = i << 16; /* B */
bt->bt_addr = 0x03 << 24; /* set foreground color */
bt->bt_omap = i << 24; /* R */
i = sc->sc_cursor.cc_color.cm_chip[1];
bt->bt_omap = i; /* G */
bt->bt_omap = i << 8; /* B */
}
/* blank or unblank the screen */
static void
cg6_blank(struct cgsix_softc *sc, int flag)
{
/*
* this is called on panic or ddb entry - force the console to the front, reset
* the colour map and enable drawing so we actually see the message even when X
* is running
*/
static void
cg6_unblank(device_t dev)
{
struct cgsix_softc *sc = device_private(dev);
cg6_blank(sc, 0);
}
/* XXX the following should be moved to a "user interface" header */
/*
* Base addresses at which users can mmap() the various pieces of a cg6.
* Note that although the Brooktree color registers do not occupy 8K,
* the X server dies if we do not allow it to map 8K there (it just maps
* from 0x70000000 forwards, as a contiguous chunk).
*/
#define CG6_USER_FBC 0x70000000
#define CG6_USER_TEC 0x70001000
#define CG6_USER_BTREGS 0x70002000
#define CG6_USER_FHC 0x70004000
#define CG6_USER_THC 0x70005000
#define CG6_USER_ROM 0x70006000
#define CG6_USER_RAM 0x70016000
#define CG6_USER_DHC 0x80000000
struct mmo {
u_long mo_uaddr; /* user (virtual) address */
u_long mo_size; /* size, or 0 for video ram size */
u_long mo_physoff; /* offset from sc_physadr */
};
/*
* Return the address that would map the given device at the given
* offset, allowing for the given protection, or return -1 for error.
*
* XXX needs testing against `demanding' applications (e.g., aviator)
*/
paddr_t
cgsixmmap(dev_t dev, off_t off, int prot)
{
struct cgsix_softc *sc = device_lookup_private(&cgsix_cd, minor(dev));
struct mmo *mo;
u_int u, sz, flags;
static struct mmo mmo[] = {
{ CG6_USER_RAM, 0, CGSIX_RAM_OFFSET },
/* do not actually know how big most of these are! */
{ CG6_USER_FBC, 1, CGSIX_FBC_OFFSET },
{ CG6_USER_TEC, 1, CGSIX_TEC_OFFSET },
{ CG6_USER_BTREGS, 8192 /* XXX */, CGSIX_BT_OFFSET },
{ CG6_USER_FHC, 1, CGSIX_FHC_OFFSET },
{ CG6_USER_THC, sizeof(struct cg6_thc), CGSIX_THC_OFFSET },
{ CG6_USER_ROM, 65536, CGSIX_ROM_OFFSET },
{ CG6_USER_DHC, 1, CGSIX_DHC_OFFSET },
};
#define NMMO (sizeof mmo / sizeof *mmo)
if (off & PGOFSET)
panic("cgsixmmap");
/*
* Entries with size 0 map video RAM (i.e., the size in fb data).
*
* Since we work in pages, the fact that the map offset table's
* sizes are sometimes bizarre (e.g., 1) is effectively ignored:
* one byte is as good as one page.
*/
for (mo = mmo; mo < &mmo[NMMO]; mo++) {
if ((u_long)off < mo->mo_uaddr)
continue;
u = off - mo->mo_uaddr;
if (mo->mo_size == 0) {
flags = BUS_SPACE_MAP_LINEAR;
sz = sc->sc_ramsize;
} else {
flags = BUS_SPACE_MAP_LINEAR;
sz = mo->mo_size;
}
if (u < sz) {
return (bus_space_mmap(sc->sc_bustag,
sc->sc_paddr, u+mo->mo_physoff,
prot, flags));
}
}
void
cgsix_bitblt(void *cookie, int xs, int ys, int xd, int yd,
int wi, int he, int rop)
{
struct cgsix_softc *sc = cookie;
volatile struct cg6_fbc *fbc = sc->sc_fbc;
CG6_WAIT_READY(fbc);
x = ri->ri_xorigin + col * wi;
y = ri->ri_yorigin + row * he;
if (c == 0x20) {
cgsix_rectfill(sc, x, y, wi, he, bg);
} else {
uc = c - font->firstchar;
data = (uint8_t *)font->data + uc * ri->ri_fontscale;
cgsix_setup_mono(sc, x, y, wi, 1, fg, bg);
for (i = 0; i < he; i++) {
cgsix_feed_line(sc, font->stride, data);
data += font->stride;
}
/* put the chip back to normal */
fbc->fbc_incy = 0;
}
}
void
cgsix_cursor(void *cookie, int on, int row, int col)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct cgsix_softc *sc = scr->scr_cookie;
int x, y, wi, he;
wi = ri->ri_font->fontwidth;
he = ri->ri_font->fontheight;
if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
if (on) {
if (ri->ri_flg & RI_CURSOR) {
cg6_ras_nuke_cursor(ri);
}
x = col * wi + ri->ri_xorigin;
y = row * he + ri->ri_yorigin;
cg6_invert(sc, x, y, wi, he);
ri->ri_flg |= RI_CURSOR;
}
ri->ri_crow = row;
ri->ri_ccol = col;
} else
{
ri->ri_crow = row;
ri->ri_ccol = col;
ri->ri_flg &= ~RI_CURSOR;
}
}
