* Copyright (c) 2015 Naruaki Etomi

/* $NetBSD: pm3fb.c,v 1.14 2025/06/16 08:39:01 macallan Exp $ */

/*
* Copyright (c) 2015 Naruaki Etomi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 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 AUTHOR ``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 AUTHOR 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.
*/

/*
* A console driver for Permedia 3 graphics controllers
* most of the following was adapted from the xf86-video-glint driver's
* pm3_accel.c, pm3_dac.c and pm2fb framebuffer console driver
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pm3fb.c,v 1.14 2025/06/16 08:39:01 macallan Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/lwp.h>
#include <sys/kauth.h>
#include <sys/atomic.h>

#include <dev/videomode/videomode.h>

#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/pciio.h>
#include <dev/pci/pm3reg.h>

#include <dev/wscons/wsdisplayvar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wsfont/wsfont.h>
#include <dev/rasops/rasops.h>
#include <dev/wscons/wsdisplay_vconsvar.h>
#include <dev/wscons/wsdisplay_glyphcachevar.h>
#include <dev/pci/wsdisplay_pci.h>

#include <dev/i2c/i2cvar.h>
#include <dev/i2c/i2c_bitbang.h>
#include <dev/i2c/ddcvar.h>
#include <dev/videomode/videomode.h>
#include <dev/videomode/edidvar.h>
#include <dev/videomode/edidreg.h>

#include "opt_pm3fb.h"

struct pm3fb_softc {
device_t sc_dev;

pci_chipset_tag_t sc_pc;
pcitag_t sc_pcitag;

bus_space_tag_t sc_memt;
bus_space_tag_t sc_iot;

bus_space_handle_t sc_regh;
bus_addr_t sc_fb, sc_reg;
bus_size_t sc_fbsize, sc_regsize;

int sc_width, sc_height, sc_depth, sc_stride;
int sc_locked;
struct vcons_screen sc_console_screen;
struct wsscreen_descr sc_defaultscreen_descr;
const struct wsscreen_descr *sc_screens[1];
struct wsscreen_list sc_screenlist;
struct vcons_data vd;
int sc_mode;
u_char sc_cmap_red[256];
u_char sc_cmap_green[256];
u_char sc_cmap_blue[256];
/* i2c stuff */
struct i2c_controller sc_i2c;
uint8_t sc_edid_data[128];
struct edid_info sc_ei;
const struct videomode *sc_videomode;
glyphcache sc_gc;
};

static int pm3fb_match(device_t, cfdata_t, void *);
static void pm3fb_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(pm3fb, sizeof(struct pm3fb_softc),
pm3fb_match, pm3fb_attach, NULL, NULL);

extern const u_char rasops_cmap[768];

static int pm3fb_ioctl(void *, void *, u_long, void *, int, struct lwp *);
static paddr_t pm3fb_mmap(void *, void *, off_t, int);
static void pm3fb_init_screen(void *, struct vcons_screen *, int, long *);

static int pm3fb_putcmap(struct pm3fb_softc *, struct wsdisplay_cmap *);
static int pm3fb_getcmap(struct pm3fb_softc *, struct wsdisplay_cmap *);
static void pm3fb_init_palette(struct pm3fb_softc *);
static int pm3fb_putpalreg(struct pm3fb_softc *, uint8_t, uint8_t, uint8_t, uint8_t);

static void pm3fb_init(struct pm3fb_softc *);
static inline void pm3fb_wait(struct pm3fb_softc *, int);
static void pm3fb_flush_engine(struct pm3fb_softc *);
static void pm3fb_rectfill(struct pm3fb_softc *, int, int, int, int, uint32_t);
static void pm3fb_rectfill_a(void *, int, int, int, int, long);
static void pm3fb_bitblt(void *, int, int, int, int, int, int, int);

static void pm3fb_cursor(void *, int, int, int);
static void pm3fb_putchar(void *, int, int, u_int, long);
static void pm3fb_putchar_aa(void *, int, int, u_int, long);
static void pm3fb_copycols(void *, int, int, int, int);
static void pm3fb_erasecols(void *, int, int, int, long);
static void pm3fb_copyrows(void *, int, int, int);
static void pm3fb_eraserows(void *, int, int, long);

struct wsdisplay_accessops pm3fb_accessops = {
pm3fb_ioctl,
pm3fb_mmap,
NULL, /* alloc_screen */
NULL, /* free_screen */
NULL, /* show_screen */
NULL, /* load_font */
NULL, /* pollc */
NULL /* scroll */
};

/* I2C glue */
static int pm3fb_i2c_send_start(void *, int);
static int pm3fb_i2c_send_stop(void *, int);
static int pm3fb_i2c_initiate_xfer(void *, i2c_addr_t, int);
static int pm3fb_i2c_read_byte(void *, uint8_t *, int);
static int pm3fb_i2c_write_byte(void *, uint8_t, int);

/* I2C bitbang glue */
static void pm3fb_i2cbb_set_bits(void *, uint32_t);
static void pm3fb_i2cbb_set_dir(void *, uint32_t);
static uint32_t pm3fb_i2cbb_read(void *);

static void pm3_setup_i2c(struct pm3fb_softc *);

static const struct i2c_bitbang_ops pm3fb_i2cbb_ops = {
pm3fb_i2cbb_set_bits,
pm3fb_i2cbb_set_dir,
pm3fb_i2cbb_read,
{
PM3_DD_SDA_IN,
PM3_DD_SCL_IN,
0,
0
}
};

/* mode setting stuff */
static int pm3fb_set_pll(struct pm3fb_softc *, int);
static void pm3fb_write_dac(struct pm3fb_softc *, int, uint8_t);
static void pm3fb_set_mode(struct pm3fb_softc *, const struct videomode *);

static inline void
pm3fb_wait(struct pm3fb_softc *sc, int slots)
{
uint32_t reg;

do {
reg = bus_space_read_4(sc->sc_memt, sc->sc_regh,
PM3_INPUT_FIFO_SPACE);
} while (reg <= slots);
}

static void
pm3fb_flush_engine(struct pm3fb_softc *sc)
{

pm3fb_wait(sc, 2);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FILTER_MODE, PM3_FM_PASS_SYNC);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_SYNC, 0);

do {
while (bus_space_read_4(sc->sc_memt, sc->sc_regh, PM3_OUTPUT_FIFO_WORDS) == 0);
} while (bus_space_read_4(sc->sc_memt, sc->sc_regh, PM3_OUTPUT_FIFO) !=
PM3_SYNC_TAG);
}

static int
pm3fb_match(device_t parent, cfdata_t match, void *aux)
{
struct pci_attach_args *pa = (struct pci_attach_args *)aux;

if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY)
return 0;
if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_3DLABS)
return 0;

if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_3DLABS_PERMEDIA3)
return 100;
return (0);
}

static void
pm3fb_attach(device_t parent, device_t self, void *aux)
{
struct pm3fb_softc *sc = device_private(self);
struct pci_attach_args *pa = aux;
struct rasops_info *ri;
struct wsemuldisplaydev_attach_args aa;
prop_dictionary_t dict;
unsigned long defattr;
bool is_console;
uint32_t flags;

sc->sc_pc = pa->pa_pc;
sc->sc_pcitag = pa->pa_tag;
sc->sc_memt = pa->pa_memt;
sc->sc_iot = pa->pa_iot;
sc->sc_dev = self;

pci_aprint_devinfo(pa, NULL);

/*
* fill in parameters from properties
* if we can't get a usable mode via DDC2 we'll use this to pick one,
* which is why we fill them in with some conservative values that
* hopefully work as a last resort
*/
dict = device_properties(self);
if (!prop_dictionary_get_uint32(dict, "width", &sc->sc_width)) {
aprint_error("%s: no width property\n", device_xname(self));
sc->sc_width = 1280;
}
if (!prop_dictionary_get_uint32(dict, "height", &sc->sc_height)) {
aprint_error("%s: no height property\n", device_xname(self));
sc->sc_height = 1024;
}
if (!prop_dictionary_get_uint32(dict, "depth", &sc->sc_depth)) {
aprint_error("%s: no depth property\n", device_xname(self));
sc->sc_depth = 8;
}

sc->sc_stride = sc->sc_width * (sc->sc_depth >> 3);

prop_dictionary_get_bool(dict, "is_console", &is_console);

pci_mapreg_info(pa->pa_pc, pa->pa_tag, 0x14, PCI_MAPREG_TYPE_MEM,
&sc->sc_fb, &sc->sc_fbsize, &flags);

if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_TYPE_MEM, 0,
&sc->sc_memt, &sc->sc_regh, &sc->sc_reg, &sc->sc_regsize)) {
aprint_error("%s: failed to map registers.\n",
device_xname(sc->sc_dev));
}

/*
* Permedia 3 always return 64MB fbsize
* 16 MB should be enough -- more just wastes map entries
*/
if (sc->sc_fbsize != 0)
sc->sc_fbsize = (16 << 20);

/*
* Some Power Mac G4 model could not initialize these registers,
* Power Mac G4 (Mirrored Drive Doors), for example
*/
#if defined(__powerpc__)
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_LOCALMEMCAPS, 0x02e311B8);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_LOCALMEMTIMINGS, 0x07424905);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_LOCALMEMCONTROL, 0x0c000003);
#endif

aprint_normal("%s: %d MB aperture at 0x%08x\n", device_xname(self),
(int)(sc->sc_fbsize >> 20), (uint32_t)sc->sc_fb);

sc->sc_defaultscreen_descr = (struct wsscreen_descr){
"default",
0, 0,
NULL,
8, 16,
WSSCREEN_WSCOLORS | WSSCREEN_HILIT,
NULL
};

sc->sc_screens[0] = &sc->sc_defaultscreen_descr;
sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens};
sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
sc->sc_locked = 0;

pm3_setup_i2c(sc);

#ifdef PM3FB_DEBUG
sc->sc_height -= 200;
#endif

vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr,
&pm3fb_accessops);

sc->vd.init_screen = pm3fb_init_screen;
sc->vd.show_screen_cookie = &sc->sc_gc;
sc->vd.show_screen_cb = glyphcache_adapt;

/* init engine here */
pm3fb_init(sc);

sc->sc_gc.gc_bitblt = pm3fb_bitblt;
sc->sc_gc.gc_rectfill = pm3fb_rectfill_a;
sc->sc_gc.gc_blitcookie = sc;
sc->sc_gc.gc_rop = 3;

ri = &sc->sc_console_screen.scr_ri;

vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, &defattr);
sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC;

pm3fb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height,
ri->ri_devcmap[(defattr >> 16) & 0xff]);
pm3fb_init_palette(sc);

sc->sc_defaultscreen_descr.textops = &ri->ri_ops;
sc->sc_defaultscreen_descr.capabilities = ri->ri_caps;
sc->sc_defaultscreen_descr.nrows = ri->ri_rows;
sc->sc_defaultscreen_descr.ncols = ri->ri_cols;

glyphcache_init(&sc->sc_gc, sc->sc_height + 5,
uimin(2047, (sc->sc_fbsize / sc->sc_stride))
- sc->sc_height - 5,
sc->sc_width,
ri->ri_font->fontwidth,
ri->ri_font->fontheight,
defattr);

if (is_console) {

wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0,
defattr);
vcons_replay_msgbuf(&sc->sc_console_screen);
}

aa.console = is_console;
aa.scrdata = &sc->sc_screenlist;
aa.accessops = &pm3fb_accessops;
aa.accesscookie = &sc->vd;

config_found(sc->sc_dev, &aa, wsemuldisplaydevprint, CFARGS_NONE);
}

static int
pm3fb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
struct lwp *l)
{
struct vcons_data *vd = v;
struct pm3fb_softc *sc = vd->cookie;
struct wsdisplay_fbinfo *wdf;
struct vcons_screen *ms = vd->active;

switch (cmd) {
case WSDISPLAYIO_GTYPE:
*(u_int *)data = WSDISPLAY_TYPE_PCIMISC;
return 0;

/* PCI config read/write passthrough. */
case PCI_IOC_CFGREAD:
case PCI_IOC_CFGWRITE:
return pci_devioctl(sc->sc_pc, sc->sc_pcitag,
cmd, data, flag, l);

case WSDISPLAYIO_GET_BUSID:
return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
sc->sc_pcitag, data);

case WSDISPLAYIO_GINFO:
if (ms == NULL)
return ENODEV;
wdf = (void *)data;
wdf->height = ms->scr_ri.ri_height;
wdf->width = ms->scr_ri.ri_width;
wdf->depth = ms->scr_ri.ri_depth;
wdf->cmsize = 256;
return 0;

case WSDISPLAYIO_GETCMAP:
return pm3fb_getcmap(sc,
(struct wsdisplay_cmap *)data);

case WSDISPLAYIO_PUTCMAP:
return pm3fb_putcmap(sc,
(struct wsdisplay_cmap *)data);

case WSDISPLAYIO_LINEBYTES:
*(u_int *)data = sc->sc_stride;
return 0;

case WSDISPLAYIO_SMODE: {
int new_mode = *(int*)data;
if (new_mode != sc->sc_mode) {
sc->sc_mode = new_mode;
if(new_mode == WSDISPLAYIO_MODE_EMUL) {
/* first set the video mode */
if (sc->sc_videomode != NULL) {
pm3fb_set_mode(sc, sc->sc_videomode);
}
/* then initialize the drawing engine */
pm3fb_init(sc);
pm3fb_init_palette(sc);
/* clean out the glyph cache */
glyphcache_wipe(&sc->sc_gc);
vcons_redraw_screen(ms);
} else
pm3fb_flush_engine(sc);
}
}
return 0;
case WSDISPLAYIO_GET_EDID: {
struct wsdisplayio_edid_info *d = data;
d->data_size = 128;
if (d->buffer_size < 128)
return EAGAIN;
return copyout(sc->sc_edid_data, d->edid_data, 128);
}

case WSDISPLAYIO_GET_FBINFO: {
struct wsdisplayio_fbinfo *fbi = data;
return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi);
}
}
return EPASSTHROUGH;
}

static paddr_t
pm3fb_mmap(void *v, void *vs, off_t offset, int prot)
{
struct vcons_data *vd = v;
struct pm3fb_softc *sc = vd->cookie;
paddr_t pa;

/* 'regular' framebuffer mmap()ing */
if (offset < sc->sc_fbsize) {
pa = bus_space_mmap(sc->sc_memt, sc->sc_fb + offset, 0, prot,
BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE);
return pa;
}

/*
* restrict all other mappings to processes with superuser privileges
* or the kernel itself
*/
if (kauth_authorize_machdep(kauth_cred_get(),
KAUTH_MACHDEP_UNMANAGEDMEM,
NULL, NULL, NULL, NULL) != 0) {
aprint_normal("%s: mmap() rejected.\n",
device_xname(sc->sc_dev));
return -1;
}

if ((offset >= sc->sc_fb) && (offset < (sc->sc_fb + sc->sc_fbsize))) {
pa = bus_space_mmap(sc->sc_memt, offset, 0, prot,
BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE);
return pa;
}

if ((offset >= sc->sc_reg) &&
(offset < (sc->sc_reg + sc->sc_regsize))) {
pa = bus_space_mmap(sc->sc_memt, offset, 0, prot,
BUS_SPACE_MAP_LINEAR);
return pa;
}

#ifdef PCI_MAGIC_IO_RANGE
/* allow mapping of IO space */
if ((offset >= PCI_MAGIC_IO_RANGE) &&
(offset < PCI_MAGIC_IO_RANGE + 0x10000)) {
pa = bus_space_mmap(sc->sc_iot, offset - PCI_MAGIC_IO_RANGE,
0, prot, BUS_SPACE_MAP_LINEAR);
return pa;
}
#endif
return -1;
}

static void
pm3fb_init_screen(void *cookie, struct vcons_screen *scr,
int existing, long *defattr)
{
struct pm3fb_softc *sc = cookie;
struct rasops_info *ri = &scr->scr_ri;

ri->ri_depth = sc->sc_depth;
ri->ri_width = sc->sc_width;
ri->ri_height = sc->sc_height;
ri->ri_stride = sc->sc_stride;
ri->ri_flg = RI_CENTER | RI_ENABLE_ALPHA | RI_FULLCLEAR;
if (sc->sc_depth == 8)
ri->ri_flg |= RI_8BIT_IS_RGB;

scr->scr_flags |= VCONS_LOADFONT;

rasops_init(ri, 0, 0);
ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_UNDERLINE | WSSCREEN_RESIZE;

rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
sc->sc_width / ri->ri_font->fontwidth);

ri->ri_hw = scr;
ri->ri_ops.copyrows = pm3fb_copyrows;
ri->ri_ops.copycols = pm3fb_copycols;
ri->ri_ops.cursor = pm3fb_cursor;
ri->ri_ops.eraserows = pm3fb_eraserows;
ri->ri_ops.erasecols = pm3fb_erasecols;
if (FONT_IS_ALPHA(ri->ri_font)) {
ri->ri_ops.putchar = pm3fb_putchar_aa;
} else
ri->ri_ops.putchar = pm3fb_putchar;
}

static int
pm3fb_putcmap(struct pm3fb_softc *sc, struct wsdisplay_cmap *cm)
{
u_char *r, *g, *b;
u_int index = cm->index;
u_int count = cm->count;
int i, error;
u_char rbuf[256], gbuf[256], bbuf[256];

if (cm->index >= 256 || cm->count > 256 ||
(cm->index + cm->count) > 256)
return EINVAL;
error = copyin(cm->red, &rbuf[index], count);
if (error)
return error;
error = copyin(cm->green, &gbuf[index], count);
if (error)
return error;
error = copyin(cm->blue, &bbuf[index], count);
if (error)
return error;

memcpy(&sc->sc_cmap_red[index], &rbuf[index], count);
memcpy(&sc->sc_cmap_green[index], &gbuf[index], count);
memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count);

r = &sc->sc_cmap_red[index];
g = &sc->sc_cmap_green[index];
b = &sc->sc_cmap_blue[index];

for (i = 0; i < count; i++) {
pm3fb_putpalreg(sc, index, *r, *g, *b);
index++;
r++, g++, b++;
}
return 0;
}

static int
pm3fb_getcmap(struct pm3fb_softc *sc, struct wsdisplay_cmap *cm)
{
u_int index = cm->index;
u_int count = cm->count;
int error;

if (index >= 255 || count > 256 || index + count > 256)
return EINVAL;

error = copyout(&sc->sc_cmap_red[index], cm->red, count);
if (error)
return error;
error = copyout(&sc->sc_cmap_green[index], cm->green, count);
if (error)
return error;
error = copyout(&sc->sc_cmap_blue[index], cm->blue, count);
if (error)
return error;

return 0;
}

static void
pm3fb_init_palette(struct pm3fb_softc *sc)
{
struct rasops_info *ri = &sc->sc_console_screen.scr_ri;
int i, j = 0;
uint8_t cmap[768];

rasops_get_cmap(ri, cmap, sizeof(cmap));

for (i = 0; i < 256; i++) {
sc->sc_cmap_red[i] = cmap[j];
sc->sc_cmap_green[i] = cmap[j + 1];
sc->sc_cmap_blue[i] = cmap[j + 2];
pm3fb_putpalreg(sc, i, cmap[j], cmap[j + 1], cmap[j + 2]);
j += 3;
}
}

static int
pm3fb_putpalreg(struct pm3fb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, uint8_t b)
{

pm3fb_wait(sc, 4);
bus_space_write_1(sc->sc_memt, sc->sc_regh, PM3_DAC_PAL_WRITE_IDX, idx);
bus_space_write_1(sc->sc_memt, sc->sc_regh, PM3_DAC_PAL_DATA, r);
bus_space_write_1(sc->sc_memt, sc->sc_regh, PM3_DAC_PAL_DATA, g);
bus_space_write_1(sc->sc_memt, sc->sc_regh, PM3_DAC_PAL_DATA, b);
return 0;
}

static void
pm3fb_write_dac(struct pm3fb_softc *sc, int reg, uint8_t data)
{

pm3fb_wait(sc, 3);
bus_space_write_1(sc->sc_memt, sc->sc_regh, PM3_DAC_INDEX_LOW, reg & 0xff);
bus_space_write_1(sc->sc_memt, sc->sc_regh, PM3_DAC_INDEX_HIGH, (reg >> 8) & 0xff);
bus_space_write_1(sc->sc_memt, sc->sc_regh, PM3_DAC_INDEX_DATA, data);
}

static void
pm3fb_init(struct pm3fb_softc *sc)
{

pm3fb_wait(sc, 16);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_LB_DESTREAD_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_LB_DESTREAD_ENABLES, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_LB_SOURCEREAD_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_LB_WRITE_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FILTER_MODE, PM3_FM_PASS_SYNC);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_STATISTIC_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_DELTA_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_RASTERIZER_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_SCISSOR_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_LINESTIPPLE_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_AREASTIPPLE_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_GID_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_DEPTH_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_STENCIL_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_STENCIL_DATA, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_COLORDDA_MODE, 0);

pm3fb_wait(sc, 16);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTUREADDRESS_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTUREINDEX_MODE0, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTUREINDEX_MODE1, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTUREREAD_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXELLUT_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTUREFILTER_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTURECOMPOSITE_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTURECOLOR_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTURECOMPOSITECOLOR_MODE1, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTURECOMPOSITEALPHA_MODE1, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTURECOMPOSITECOLOR_MODE0, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_TEXTURECOMPOSITEALPHA_MODE0, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FOG_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_CHROMATEST_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_ALPHATEST_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_ANTIALIAS_MODE, 0);

pm3fb_wait(sc, 16);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_YUV_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_ALPHABLENDCOLOR_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_ALPHABLENDALPHA_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_DITHER_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_LOGICALOP_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_ROUTER_MODE, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_WINDOW, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_CONFIG2D, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_SPANCOLORMASK, 0xffffffff);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_XBIAS, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_YBIAS, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_DELTACONTROL, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_BITMASKPATTERN, 0xffffffff);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBDESTREAD_ENABLE,
PM3_FBDESTREAD_SET(0xff, 0xff, 0xff));
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBDESTREAD_BUFFERADDRESS0, 0);

pm3fb_wait(sc, 16);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBDESTREAD_BUFFEROFFSET0, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBDESTREAD_BUFFERWIDTH0,
PM3_FBDESTREAD_BUFFERWIDTH_WIDTH(sc->sc_stride));
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FB_DESTREAD_MODE,
PM3_FBDRM_ENABLE | PM3_FBDRM_ENABLE0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBSOURCEREAD_BUFFERADDRESS, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBSOURCEREAD_BUFFEROFFSET, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBSOURCEREAD_BUFFERWIDTH,
PM3_FBSOURCEREAD_BUFFERWIDTH_WIDTH(sc->sc_stride));
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBSOURCEREAD_MODE,
PM3_FBSOURCEREAD_MODE_BLOCKING | PM3_FBSOURCEREAD_MODE_ENABLE);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_PIXEL_SIZE, PM3_PS_8BIT);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBSOFTWAREWRITEMASK, 0xffffffff);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBHARDWAREWRITEMASK, 0xffffffff);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBWRITE_MODE,
PM3_FBWRITEMODE_WRITEENABLE | PM3_FBWRITEMODE_OPAQUESPAN | PM3_FBWRITEMODE_ENABLE0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBWRITEBUFFERADDRESS0, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBWRITEBUFFEROFFSET0, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBWRITEBUFFERWIDTH0,
PM3_FBWRITEBUFFERWIDTH_WIDTH(sc->sc_stride));
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_SIZEOF_FRAMEBUFFER, 4095);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_DITHER_MODE, PM3_CF_TO_DIM_CF(4));
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_DXDOM, 0);

pm3fb_wait(sc, 6);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_DXSUB, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_DY, 1 << 16);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_STARTXDOM, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_STARTXSUB, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_STARTY, 0);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_COUNT, 0);
}

static void
pm3fb_rectfill(struct pm3fb_softc *sc, int x, int y, int wi, int he,
uint32_t colour)
{
pm3fb_wait(sc, 4);

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_CONFIG2D,
PM3_CONFIG2D_USECONSTANTSOURCE | PM3_CONFIG2D_FOREGROUNDROP_ENABLE |
(PM3_CONFIG2D_FOREGROUNDROP(0x3)) | PM3_CONFIG2D_FBWRITE_ENABLE);

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FOREGROUNDCOLOR, colour);

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_RECTANGLEPOSITION,
(((y) & 0xffff) << 16) | ((x) & 0xffff) );

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_RENDER2D,
PM3_RENDER2D_XPOSITIVE | PM3_RENDER2D_YPOSITIVE |
PM3_RENDER2D_OPERATION_NORMAL | PM3_RENDER2D_SPANOPERATION |
(((he) & 0x0fff) << 16) | ((wi) & 0x0fff));

#ifdef PM3FB_DEBUG
pm3fb_flush_engine(sc);
#endif
}

static void
pm3fb_rectfill_a(void *cookie, int x, int y, int wi, int he, long attr)
{
struct pm3fb_softc *sc = cookie;

pm3fb_rectfill(sc, x, y, wi, he,
sc->vd.active->scr_ri.ri_devcmap[(attr >> 24 & 0xf)]);
}

static void
pm3fb_bitblt(void *cookie, int srcx, int srcy, int dstx, int dsty,
int width, int height, int rop)
{
struct pm3fb_softc *sc = cookie;
int x_align, offset_x, offset_y;
uint32_t dir = 0;

offset_x = srcx - dstx;
offset_y = srcy - dsty;

if (dsty <= srcy) {
dir |= PM3_RENDER2D_YPOSITIVE;
}

if (dstx <= srcx) {
dir |= PM3_RENDER2D_XPOSITIVE;
}

x_align = (srcx & 0x1f);

pm3fb_wait(sc, 6);

if (rop == 3){
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_CONFIG2D,
PM3_CONFIG2D_USERSCISSOR_ENABLE | PM3_CONFIG2D_FOREGROUNDROP_ENABLE | PM3_CONFIG2D_BLOCKING |
PM3_CONFIG2D_FOREGROUNDROP(rop) | PM3_CONFIG2D_FBWRITE_ENABLE);
} else {
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_CONFIG2D,
PM3_CONFIG2D_USERSCISSOR_ENABLE | PM3_CONFIG2D_FOREGROUNDROP_ENABLE | PM3_CONFIG2D_BLOCKING |
PM3_CONFIG2D_FOREGROUNDROP(rop) | PM3_CONFIG2D_FBWRITE_ENABLE | PM3_CONFIG2D_FBDESTREAD_ENABLE);
}

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_SCISSORMINXY,
((dsty & 0x0fff) << 16) | (dstx & 0x0fff));

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_SCISSORMAXXY,
(((dsty + height) & 0x0fff) << 16) | ((dstx + width) & 0x0fff));

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FBSOURCEREAD_BUFFEROFFSET,
(((offset_y) & 0xffff) << 16) | ((offset_x) & 0xffff));

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_RECTANGLEPOSITION,
(((dsty) & 0xffff) << 16) | ((dstx - x_align) & 0xffff));

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_RENDER2D,
dir |
PM3_RENDER2D_OPERATION_NORMAL | PM3_RENDER2D_SPANOPERATION | PM3_RENDER2D_FBSOURCEREADENABLE |
(((height) & 0x0fff) << 16) | ((width + x_align) & 0x0fff));

#ifdef PM3FB_DEBUG
pm3fb_flush_engine(sc);
#endif
}

static void
pm3fb_cursor(void *cookie, int on, int row, int col)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct pm3fb_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) {
x = ri->ri_ccol * wi + ri->ri_xorigin;
y = ri->ri_crow * he + ri->ri_yorigin;
if (ri->ri_flg & RI_CURSOR) {
pm3fb_bitblt(sc, x, y, x, y, wi, he, 12);
ri->ri_flg &= ~RI_CURSOR;
}
ri->ri_crow = row;
ri->ri_ccol = col;
if (on) {
x = ri->ri_ccol * wi + ri->ri_xorigin;
y = ri->ri_crow * he + ri->ri_yorigin;
pm3fb_bitblt(sc, x, y, x, y, wi, he, 12);
ri->ri_flg |= RI_CURSOR;
}
} else {
scr->scr_ri.ri_crow = row;
scr->scr_ri.ri_ccol = col;
scr->scr_ri.ri_flg &= ~RI_CURSOR;
}
}

static void
pm3fb_putchar(void *cookie, int row, int col, u_int c, long attr)
{
struct rasops_info *ri = cookie;
struct wsdisplay_font *font = PICK_FONT(ri, c);
struct vcons_screen *scr = ri->ri_hw;
struct pm3fb_softc *sc = scr->scr_cookie;
uint32_t mode;

if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
void *data;
uint32_t fg, bg;
int uc, i;
int x, y, wi, he;

wi = font->fontwidth;
he = font->fontheight;

if (!CHAR_IN_FONT(c, font))
return;

bg = ri->ri_devcmap[(attr >> 16) & 0xf];
fg = ri->ri_devcmap[(attr >> 24) & 0xf];
x = ri->ri_xorigin + col * wi;
y = ri->ri_yorigin + row * he;
if (c == 0x20) {
pm3fb_rectfill(sc, x, y, wi, he, bg);
} else {
uc = c - font->firstchar;
data = (uint8_t *)font->data + uc * ri->ri_fontscale;
mode = PM3_RM_MASK_MIRROR;

#if BYTE_ORDER == LITTLE_ENDIAN
switch (ri->ri_font->stride) {
case 1:
mode |= 4 << 7;
break;
case 2:
mode |= 3 << 7;
break;
}
#else
switch (ri->ri_font->stride) {
case 1:
mode |= 3 << 7;
break;
case 2:
mode |= 2 << 7;
break;
}
#endif
pm3fb_wait(sc, 6);
bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_FOREGROUNDCOLOR, fg);
bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_BACKGROUNDCOLOR, bg);

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_RASTERIZER_MODE, mode);

bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_CONFIG2D,
PM3_CONFIG2D_USECONSTANTSOURCE |
PM3_CONFIG2D_FOREGROUNDROP_ENABLE |
PM3_CONFIG2D_FOREGROUNDROP(0x03) |
PM3_CONFIG2D_OPAQUESPAN |
PM3_CONFIG2D_FBWRITE_ENABLE);

bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_RECTANGLEPOSITION, (((y) & 0xffff)<<16) | ((x) & 0xffff));

bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_RENDER2D,
PM3_RENDER2D_XPOSITIVE |
PM3_RENDER2D_YPOSITIVE |
PM3_RENDER2D_OPERATION_SYNCONBITMASK |
PM3_RENDER2D_SPANOPERATION |
((wi) & 0x0fff) | (((he) & 0x0fff) << 16));

pm3fb_wait(sc, he);

switch (ri->ri_font->stride) {
case 1: {
uint8_t *data8 = data;
uint32_t reg;
for (i = 0; i < he; i++) {
reg = *data8;
bus_space_write_4(sc->sc_memt,
sc->sc_regh,
PM3_BITMASKPATTERN, reg);
data8++;
}
break;
}
case 2: {
uint16_t *data16 = data;
uint32_t reg;
for (i = 0; i < he; i++) {
reg = *data16;
bus_space_write_4(sc->sc_memt,
sc->sc_regh,
PM3_BITMASKPATTERN, reg);
data16++;
}
break;
}
}
}
}
}

static void
pm3fb_putchar_aa(void *cookie, int row, int col, u_int c, long attr)
{
struct rasops_info *ri = cookie;
struct wsdisplay_font *font = PICK_FONT(ri, c);
struct vcons_screen *scr = ri->ri_hw;
struct pm3fb_softc *sc = scr->scr_cookie;
uint32_t bg, fg, pixel, latch, aval;
int i, j, x, y, wi, he, r, g, b;
int r1, g1, b1, r0, g0, b0, fgo, bgo, shift;
uint8_t *data8;
int rv = GC_NOPE, cnt = 0;

if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL)
return;

if (!CHAR_IN_FONT(c, font))
return;

wi = font->fontwidth;
he = font->fontheight;

bg = ri->ri_devcmap[(attr >> 16) & 0xf] & 0xff;
fg = ri->ri_devcmap[(attr >> 24) & 0xf] & 0xff;
x = ri->ri_xorigin + col * wi;
y = ri->ri_yorigin + row * he;

/* if we draw a whitespace we're done here */
if (c == 0x20) {
pm3fb_rectfill(sc, x, y, wi, he, bg);
if (attr & 1)
pm3fb_rectfill(sc, x, y + he - 2, wi, 1, fg);
return;
}

rv = glyphcache_try(&sc->sc_gc, c, x, y, attr);
if (rv == GC_OK)
return;

data8 = WSFONT_GLYPH(c, font);

pm3fb_wait(sc, 3);

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_CONFIG2D,
PM3_CONFIG2D_OPAQUESPAN |
PM3_CONFIG2D_EXTERNALSOURCEDATA |
PM3_CONFIG2D_FBWRITE_ENABLE);

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_RECTANGLEPOSITION,
(((y) & 0xffff) << 16) | ((x) & 0xffff) );

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_RENDER2D,
PM3_RENDER2D_XPOSITIVE | PM3_RENDER2D_YPOSITIVE |
PM3_RENDER2D_OPERATION_SYNCONHOSTDATA | PM3_RENDER2D_SPANOPERATION |
(((he) & 0x0fff) << 16) | ((wi) & 0x0fff));

/*
* we need the RGB colours here, so get offsets into rasops_cmap
*/
fgo = ((attr >> 24) & 0xf) * 3;
bgo = ((attr >> 16) & 0xf) * 3;

r0 = rasops_cmap[bgo];
g0 = rasops_cmap[bgo + 1];
b0 = rasops_cmap[bgo + 2];
r1 = rasops_cmap[fgo];
g1 = rasops_cmap[fgo + 1];
b1 = rasops_cmap[fgo + 2];

pm3fb_wait(sc, 20);

/*
* we need two loops here because lines have to be padded to full 32bit
*/
for (i = 0; i < he; i++) {
shift = 24;
latch = 0;
for (j = 0; j < wi; j++) {
aval = *data8;
if (aval == 0) {
pixel = bg;
} else if (aval == 255) {
pixel = fg;
} else {
r = aval * r1 + (255 - aval) * r0;
g = aval * g1 + (255 - aval) * g0;
b = aval * b1 + (255 - aval) * b0;
pixel = ((r & 0xe000) >> 8) |
((g & 0xe000) >> 11) |
((b & 0xc000) >> 14);
}
latch |= pixel << shift;
shift -= 8;
if (shift < 0) {
bus_space_write_stream_4(sc->sc_memt, sc->sc_regh,
PM3_SOURCE_DATA, latch);
cnt++;
if (cnt > 18) {
pm3fb_wait(sc, 20);
cnt = 0;
}
latch = 0;
shift = 24;
}
data8++;
}
if (shift != 24)
bus_space_write_stream_4(sc->sc_memt, sc->sc_regh,
PM3_SOURCE_DATA, latch);
}

if (rv == GC_ADD) {
glyphcache_add(&sc->sc_gc, c, x, y);
}

if (attr & 1)
pm3fb_rectfill(sc, x, y + he - 2, wi, 1, fg);
}

static void
pm3fb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct pm3fb_softc *sc = scr->scr_cookie;
int32_t xs, xd, y, width, height;

if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) {
xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol;
xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol;
y = ri->ri_yorigin + ri->ri_font->fontheight * row;
width = ri->ri_font->fontwidth * ncols;
height = ri->ri_font->fontheight;
pm3fb_bitblt(sc, xs, y, xd, y, width, height, 3);
}
}

static void
pm3fb_erasecols(void *cookie, int row, int startcol, int ncols, long fillattr)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct pm3fb_softc *sc = scr->scr_cookie;
int32_t x, y, width, height, fg, bg, ul;

if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) {
x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol;
y = ri->ri_yorigin + ri->ri_font->fontheight * row;
width = ri->ri_font->fontwidth * ncols;
height = ri->ri_font->fontheight;
rasops_unpack_attr(fillattr, &fg, &bg, &ul);

pm3fb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]);
}
}

static void
pm3fb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct pm3fb_softc *sc = scr->scr_cookie;
int32_t x, ys, yd, width, height;

if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) {
x = ri->ri_xorigin;
ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow;
yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow;
width = ri->ri_emuwidth;
height = ri->ri_font->fontheight*nrows;
pm3fb_bitblt(sc, x, ys, x, yd, width, height, 3);
}
}

static void
pm3fb_eraserows(void *cookie, int row, int nrows, long fillattr)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct pm3fb_softc *sc = scr->scr_cookie;
int32_t x, y, width, height, fg, bg, ul;

if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) {
if (row == 0 && nrows == ri->ri_rows) {
x = 0;
y = 0;
width = sc->sc_width;
height = sc->sc_height;
} else {
x = ri->ri_xorigin;
y = ri->ri_yorigin + ri->ri_font->fontheight * row;
width = ri->ri_emuwidth;
height = ri->ri_font->fontheight * nrows;
}
rasops_unpack_attr(fillattr, &fg, &bg, &ul);

pm3fb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]);
}
}

/* should be enough */
#define MODE_IS_VALID(m) (((m)->hdisplay < 2048))

static void
pm3_setup_i2c(struct pm3fb_softc *sc)
{
int i;

/* Fill in the i2c tag */
iic_tag_init(&sc->sc_i2c);
sc->sc_i2c.ic_cookie = sc;
sc->sc_i2c.ic_send_start = pm3fb_i2c_send_start;
sc->sc_i2c.ic_send_stop = pm3fb_i2c_send_stop;
sc->sc_i2c.ic_initiate_xfer = pm3fb_i2c_initiate_xfer;
sc->sc_i2c.ic_read_byte = pm3fb_i2c_read_byte;
sc->sc_i2c.ic_write_byte = pm3fb_i2c_write_byte;
sc->sc_i2c.ic_exec = NULL;

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_DISPLAY_DATA, 0);

/* zero out the EDID buffer */
memset(sc->sc_edid_data, 0, 128);

/* Some monitors don't respond first time */
i = 0;
while (sc->sc_edid_data[1] == 0 && i < 10) {
ddc_read_edid(&sc->sc_i2c, sc->sc_edid_data, 128);
i++;
}

if (edid_parse(&sc->sc_edid_data[0], &sc->sc_ei) != -1) {
/*
* Now pick a mode.
*/
#ifdef PM3FB_DEBUG
edid_print(&sc->sc_ei);
#endif
if ((sc->sc_ei.edid_preferred_mode != NULL)) {
struct videomode *m = sc->sc_ei.edid_preferred_mode;
if (MODE_IS_VALID(m)) {
sc->sc_videomode = m;
} else {
aprint_error_dev(sc->sc_dev,
"unable to use preferred mode\n");
}
}
/*
* if we can't use the preferred mode go look for the
* best one we can support
*/
if (sc->sc_videomode == NULL) {
struct videomode *m = sc->sc_ei.edid_modes;

sort_modes(sc->sc_ei.edid_modes,
&sc->sc_ei.edid_preferred_mode,
sc->sc_ei.edid_nmodes);
if (sc->sc_videomode == NULL)
for (int n = 0; n < sc->sc_ei.edid_nmodes; n++)
if (MODE_IS_VALID(&m[n])) {
sc->sc_videomode = &m[n];
break;
}
}
}
if (sc->sc_videomode == NULL) {
/* no EDID data? */
sc->sc_videomode = pick_mode_by_ref(sc->sc_width,
sc->sc_height, 60);
}
if (sc->sc_videomode != NULL) {
pm3fb_set_mode(sc, sc->sc_videomode);
}
}

/* I2C bitbanging */
static void pm3fb_i2cbb_set_bits(void *cookie, uint32_t bits)
{
struct pm3fb_softc *sc = cookie;
uint32_t out;

out = bits << 2; /* bitmasks match the IN bits */

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_DISPLAY_DATA, out);
delay(100);
}

static void pm3fb_i2cbb_set_dir(void *cookie, uint32_t dir)
{
/* Nothing to do */
}

static uint32_t pm3fb_i2cbb_read(void *cookie)
{
struct pm3fb_softc *sc = cookie;
uint32_t bits;

bits = bus_space_read_4(sc->sc_memt, sc->sc_regh, PM3_DISPLAY_DATA);
return bits;
}

/* higher level I2C stuff */
static int
pm3fb_i2c_send_start(void *cookie, int flags)
{

return (i2c_bitbang_send_start(cookie, flags, &pm3fb_i2cbb_ops));
}

static int
pm3fb_i2c_send_stop(void *cookie, int flags)
{

return (i2c_bitbang_send_stop(cookie, flags, &pm3fb_i2cbb_ops));
}

static int
pm3fb_i2c_initiate_xfer(void *cookie, i2c_addr_t addr, int flags)
{

return (i2c_bitbang_initiate_xfer(cookie, addr, flags,
&pm3fb_i2cbb_ops));
}

static int
pm3fb_i2c_read_byte(void *cookie, uint8_t *valp, int flags)
{

return (i2c_bitbang_read_byte(cookie, valp, flags, &pm3fb_i2cbb_ops));
}

static int
pm3fb_i2c_write_byte(void *cookie, uint8_t val, int flags)
{
return (i2c_bitbang_write_byte(cookie, val, flags, &pm3fb_i2cbb_ops));
}

static int
pm3fb_set_pll(struct pm3fb_softc *sc, int freq)
{
uint8_t bf = 0, bpre = 0, bpost = 0;
int count;
unsigned long feedback, prescale, postscale, IntRef, VCO, out_freq, diff, VCOlow, VCOhigh, bdiff = 1000000;

freq *= 10; /* convert into 100Hz units */

for (postscale = 0; postscale <= 5; postscale++) {
/*
* It is pointless going through the main loop if all values of
* prescale produce an VCO outside the acceptable range
*/
prescale = 1;
feedback = (prescale * (1UL << postscale) * freq) / (2 * PM3_EXT_CLOCK_FREQ);
VCOlow = (2 * PM3_EXT_CLOCK_FREQ * feedback) / prescale;
if (VCOlow > PM3_VCO_FREQ_MAX)
continue;

prescale = 255;
feedback = (prescale * (1UL << postscale) * freq) / (2 * PM3_EXT_CLOCK_FREQ);
VCOhigh = (2 * PM3_EXT_CLOCK_FREQ * feedback) / prescale;
if (VCOhigh < PM3_VCO_FREQ_MIN)
continue;

for (prescale = 1; prescale <= 255; prescale++) {
IntRef = PM3_EXT_CLOCK_FREQ / prescale;
if (IntRef < PM3_INTREF_MIN || IntRef > PM3_INTREF_MAX) {
if (IntRef > PM3_INTREF_MAX) {
/*
* Hopefully we will get into range as the prescale
* value increases
*/
continue;
} else {
/*
* already below minimum and it will only get worse
* move to the next postscale value
*/
break;
}
}

feedback = (prescale * (1UL << postscale) * freq) / (2 * PM3_EXT_CLOCK_FREQ);

if (feedback > 255) {
/*
* prescale, feedbackscale & postscale registers
* are only 8 bits wide
*/
break;
} else if (feedback == 255) {
count = 1;
} else {
count = 2;
}

do {
VCO = (2 * PM3_EXT_CLOCK_FREQ * feedback) / prescale;
if (VCO >= PM3_VCO_FREQ_MIN && VCO <= PM3_VCO_FREQ_MAX) {
out_freq = VCO / (1UL << postscale);
diff = abs(out_freq - freq);
if (diff < bdiff) {
bdiff = diff;
bf = feedback;
bpre = prescale;
bpost = postscale;
if (diff == 0)
goto out;
}
}
feedback++;
} while (--count >= 0);
}
}
out:
pm3fb_write_dac(sc, PM3_RAMDAC_CMD_CLOCK0_PRE_SCALE, bpre);
pm3fb_write_dac(sc, PM3_RAMDAC_CMD_CLOCK0_FEEDBACK_SCALE, bf);
pm3fb_write_dac(sc, PM3_RAMDAC_CMD_CLOCK0_POST_SCALE, bpost);
return 0;
}

static void
pm3fb_set_mode(struct pm3fb_softc *sc, const struct videomode *mode)
{
int t1, t2, t3, t4, stride;
uint32_t vclk, tmp1;
uint8_t sync = 0;

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_BYPASS_MASK, 0xffffffff);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_APERTURE1_CONTROL, 0x00000000);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_APERTURE2_CONTROL, 0x00000000);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FIFODISCONNECT, 0x00000007);

t1 = mode->hsync_start - mode->hdisplay;
t2 = mode->vsync_start - mode->vdisplay;
t3 = mode->hsync_end - mode->hsync_start;
t4 = mode->vsync_end - mode->vsync_start;
stride = (mode->hdisplay + 31) & ~31;

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_HORIZ_TOTAL,
(mode->htotal >> 4) - 1);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_HORIZ_SYNC_END,
(t1 + t3) >> 4);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_HORIZ_SYNC_START,
(t1 >> 4));
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_HORIZ_BLANK_END,
(mode->htotal - mode->hdisplay) >> 4);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_HORIZ_GATE_END,
(mode->htotal - mode->hdisplay) >> 4);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_SCREEN_STRIDE,
(stride >> 4));

bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_VERT_TOTAL, mode->vtotal - 1);
bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_VERT_SYNC_END, t2 + t4 - 1);
bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_VERT_SYNC_START, t2 - 1);
bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_VERT_BLANK_END, mode->vtotal - mode->vdisplay);

/*8bpp*/
bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_BYAPERTURE1MODE, PM3_BYAPERTUREMODE_PIXELSIZE_8BIT);
bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_BYAPERTURE2MODE, PM3_BYAPERTUREMODE_PIXELSIZE_8BIT);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_VIDEO_CONTROL,
(PM3_VC_ENABLE | PM3_VC_HSC_ACTIVE_HIGH | PM3_VC_VSC_ACTIVE_HIGH | PM3_VC_PIXELSIZE_8BIT));

vclk = bus_space_read_4(sc->sc_memt, sc->sc_regh, PM3_V_CLOCK_CTL);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_V_CLOCK_CTL, (vclk & 0xFFFFFFFC));
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_SCREEN_BASE, 0x0);

tmp1 = bus_space_read_4(sc->sc_memt, sc->sc_regh, PM3_CHIP_CONFIG);
bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_CHIP_CONFIG, tmp1 & 0xFFFFFFFD);

pm3fb_set_pll(sc, mode->dot_clock);

if (mode->flags & VID_PHSYNC)
sync |= PM3_SC_HSYNC_ACTIVE_HIGH;
if (mode->flags & VID_PVSYNC)
sync |= PM3_SC_VSYNC_ACTIVE_HIGH;

bus_space_write_4(sc->sc_memt, sc->sc_regh,
PM3_RD_PM3_INDEX_CONTROL, PM3_INCREMENT_DISABLE);
pm3fb_write_dac(sc, PM3_RAMDAC_CMD_SYNC_CONTROL, sync);
pm3fb_write_dac(sc, PM3_RAMDAC_CMD_DAC_CONTROL, 0x00);

pm3fb_write_dac(sc, PM3_RAMDAC_CMD_PIXEL_SIZE, PM3_DACPS_8BIT);
pm3fb_write_dac(sc, PM3_RAMDAC_CMD_COLOR_FORMAT,
(PM3_CF_ORDER_RGB | PM3_CF_VISUAL_256_COLOR));
pm3fb_write_dac(sc, PM3_RAMDAC_CMD_MISC_CONTROL, PM3_MC_DAC_SIZE_8BIT);

bus_space_write_4(sc->sc_memt, sc->sc_regh, PM3_FIFOCONTROL, 0x00000905);

sc->sc_width = mode->hdisplay;
sc->sc_height = mode->vdisplay;
sc->sc_depth = 8;
sc->sc_stride = stride;
aprint_normal_dev(sc->sc_dev, "pm3 using %d x %d in 8 bit, stride %d\n",
sc->sc_width, sc->sc_height, stride);
}