* Copyright (c) 2007, 2008, 2009 Miodrag Vallat.

/* $NetBSD: wcfb.c,v 1.21 2022/07/17 10:28:09 riastradh Exp $ */

/*
* Copyright (c) 2007, 2008, 2009 Miodrag Vallat.
* 2010 Michael Lorenz
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

/* a driver for (some) 3DLabs Wildcat cards, based on OpenBSD's ifb driver */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: wcfb.c,v 1.21 2022/07/17 10:28:09 riastradh Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/mutex.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/kauth.h>
#include <sys/kmem.h>

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

#include "opt_wsfb.h"
#include "opt_wsdisplay_compat.h"

#ifdef WCFB_DEBUG
# define DPRINTF printf
#else
# define DPRINTF while (0) printf
#endif

static int wcfb_match(device_t, cfdata_t, void *);
static void wcfb_attach(device_t, device_t, void *);
static int wcfb_ioctl(void *, void *, u_long, void *, int,
struct lwp *);
static paddr_t wcfb_mmap(void *, void *, off_t, int);

struct wcfb_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_regt, sc_wtft;
bus_space_tag_t sc_iot;

bus_space_handle_t sc_fbh;
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_stride;
int sc_locked;
uint8_t *sc_fbaddr, *sc_fb0, *sc_fb1, *sc_shadow;
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, sc_dpms;
u_char sc_cmap_red[256];
u_char sc_cmap_green[256];
u_char sc_cmap_blue[256];
uint32_t sc_fb0off, sc_fb1off, sc_fb8size;

void (*copycols)(void *, int, int, int, int);
void (*erasecols)(void *, int, int, int, long);
void (*copyrows)(void *, int, int, int);
void (*eraserows)(void *, int, int, long);
void (*putchar)(void *, int, int, u_int, long);
void (*cursor)(void *, int, int, int);
int sc_is_jfb;
};

static void wcfb_init_screen(void *, struct vcons_screen *, int, long *);

CFATTACH_DECL_NEW(wcfb, sizeof(struct wcfb_softc),
wcfb_match, wcfb_attach, NULL, NULL);

struct wsdisplay_accessops wcfb_accessops = {
wcfb_ioctl,
wcfb_mmap,
NULL, /* alloc_screen */
NULL, /* free_screen */
NULL, /* show_screen */
NULL, /* load_font */
NULL, /* pollc */
NULL /* scroll */
};

static void wcfb_putchar(void *, int, int, u_int, long);
static void wcfb_cursor(void *, int, int, int);
static void wcfb_copycols(void *, int, int, int, int);
static void wcfb_erasecols(void *, int, int, int, long);
static void wcfb_copyrows(void *, int, int, int);
static void wcfb_eraserows(void *, int, int, long);

static void wcfb_acc_putchar(void *, int, int, u_int, long);
static void wcfb_acc_cursor(void *, int, int, int);
static void wcfb_acc_copycols(void *, int, int, int, int);
static void wcfb_acc_erasecols(void *, int, int, int, long);
static void wcfb_acc_copyrows(void *, int, int, int);
static void wcfb_acc_eraserows(void *, int, int, long);

static void wcfb_putpalreg(struct wcfb_softc *, int, int, int, int);

static void wcfb_bitblt(struct wcfb_softc *, int, int, int, int, int,
int, uint32_t);
static void wcfb_rectfill(struct wcfb_softc *, int, int, int, int, int);
static void wcfb_rop_common(struct wcfb_softc *, bus_addr_t, int, int, int,
int, int, int, uint32_t, int32_t);
static void wcfb_rop_jfb(struct wcfb_softc *, int, int, int, int, int, int,
uint32_t, int32_t);
static int wcfb_rop_wait(struct wcfb_softc *);

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

if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_3DLABS &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_3DLABS_WILDCAT5110)
return 100;

return 0;
}

static void
wcfb_attach(device_t parent, device_t self, void *aux)
{
struct wcfb_softc *sc = device_private(self);
struct pci_attach_args *pa = aux;
struct rasops_info *ri;
prop_dictionary_t dict;
struct wsemuldisplaydev_attach_args aa;
int i, j;
uint32_t reg;
unsigned long defattr;
bool is_console = 0;
uint32_t sub;

sc->sc_dev = self;
sc->putchar = NULL;
pci_aprint_devinfo(pa, NULL);

dict = device_properties(self);
prop_dictionary_get_bool(dict, "is_console", &is_console);
#ifndef WCFB_DEBUG
if (!is_console) return;
#endif
sc->sc_memt = pa->pa_memt;
sc->sc_iot = pa->pa_iot;
sc->sc_pc = pa->pa_pc;
sc->sc_pcitag = pa->pa_tag;

if (pci_mapreg_map(pa, 0x14, PCI_MAPREG_TYPE_MEM, 0,
&sc->sc_regt, &sc->sc_regh, &sc->sc_reg, &sc->sc_regsize)) {
aprint_error("%s: failed to map registers.\n",
device_xname(sc->sc_dev));
}

if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_TYPE_MEM,
BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE,
&sc->sc_memt, &sc->sc_fbh, &sc->sc_fb, &sc->sc_fbsize)) {
aprint_error("%s: failed to map framebuffer.\n",
device_xname(sc->sc_dev));
}

sc->sc_fbaddr = bus_space_vaddr(sc->sc_memt, sc->sc_fbh);
#ifdef DEBUG
memset(sc->sc_fbaddr, 0, sc->sc_fbsize);
#endif
sc->sc_fb0off =
bus_space_read_4(sc->sc_regt, sc->sc_regh,
WC_FB8_ADDR0) - sc->sc_fb;
sc->sc_fb0 = sc->sc_fbaddr + sc->sc_fb0off;
sc->sc_fb1off =
bus_space_read_4(sc->sc_regt, sc->sc_regh,
WC_FB8_ADDR1) - sc->sc_fb;
sc->sc_fb1 = sc->sc_fbaddr + sc->sc_fb1off;
sc->sc_fb8size = 2 * (sc->sc_fb1off - sc->sc_fb0off);

sub = pci_conf_read(sc->sc_pc, sc->sc_pcitag, PCI_SUBSYS_ID_REG);
aprint_normal("subsys: %08x\n", sub);
switch (sub) {
case WC_XVR1200:
sc->sc_is_jfb = 1;
break;
default:
sc->sc_is_jfb = 0;
}

reg = bus_space_read_4(sc->sc_regt, sc->sc_regh, WC_RESOLUTION);
sc->sc_height = (reg >> 16) + 1;
#ifdef WCFB_DEBUG
sc->sc_height -= 200;
#endif
sc->sc_width = (reg & 0xffff) + 1;
sc->sc_stride = 1 <<
((bus_space_read_4(sc->sc_regt, sc->sc_regh, WC_CONFIG) &
0x00ff0000) >> 16);
aprint_normal_dev(self, "%d x %d, %d\n",
sc->sc_width, sc->sc_height, sc->sc_stride);

if (sc->sc_is_jfb == 0) {
sc->sc_shadow = kmem_alloc(sc->sc_stride * sc->sc_height,
KM_SLEEP);
}

for (i = 0x40; i < 0x100; i += 16) {
aprint_normal("%04x:", i);
for (j = 0; j < 16; j += 4) {
aprint_normal(" %08x", bus_space_read_4(sc->sc_regt,
sc->sc_regh, 0x8000 + i + j));
}
aprint_normal("\n");
}

/* make sure video output is on */
bus_space_write_4(sc->sc_regt, sc->sc_regh, WC_DPMS_STATE, WC_DPMS_ON);
sc->sc_dpms = WSDISPLAYIO_VIDEO_ON;

#if 0
/* testing & debugging voodoo */
memset(sc->sc_fb0, 0x01, 0x00100000);
memset(sc->sc_fb1, 0x00, 0x00100000);
wcfb_rop_wait(sc);
wcfb_rop_jfb(sc, 0, 0, 0, 0, 600, 600, WC_ROP_SET, 0xffffffff);
wcfb_rop_wait(sc);
delay(4000000);
bus_space_write_4(sc->sc_regt, sc->sc_regh, WC_FB8_ADDR1,
bus_space_read_4(sc->sc_regt, sc->sc_regh, WC_FB8_ADDR0));
delay(8000000);
#endif
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;

vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr,
&wcfb_accessops);
sc->vd.init_screen = wcfb_init_screen;

/* init engine here */
#if 0
wcfb_init(sc);
#endif

ri = &sc->sc_console_screen.scr_ri;

j = 0;
for (i = 0; i < 256; i++) {

sc->sc_cmap_red[i] = rasops_cmap[j];
sc->sc_cmap_green[i] = rasops_cmap[j + 1];
sc->sc_cmap_blue[i] = rasops_cmap[j + 2];
wcfb_putpalreg(sc, i, rasops_cmap[j], rasops_cmap[j + 1],
rasops_cmap[j + 2]);
j += 3;
}

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

if (sc->sc_is_jfb) {
wcfb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height,
ri->ri_devcmap[(defattr >> 16) & 0xff]);
} else {
memset(sc->sc_fb0,
ri->ri_devcmap[(defattr >> 16) & 0xff],
sc->sc_stride * sc->sc_height);
memset(sc->sc_fb1,
ri->ri_devcmap[(defattr >> 16) & 0xff],
sc->sc_stride * sc->sc_height);
}
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;
wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0,
defattr);
vcons_replay_msgbuf(&sc->sc_console_screen);
} else {
/*
* since we're not the console we can postpone the rest
* until someone actually allocates a screen for us
*/
memset(sc->sc_fb0, WS_DEFAULT_BG,
sc->sc_stride * sc->sc_height);
memset(sc->sc_fb1, WS_DEFAULT_BG,
sc->sc_stride * sc->sc_height);
return;
}

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

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

static int
wcfb_putcmap(struct wcfb_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++) {
wcfb_putpalreg(sc, index, *r, *g, *b);
index++;
r++, g++, b++;
}
return 0;
}

static int
wcfb_getcmap(struct wcfb_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 int
wcfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
struct lwp *l)
{
struct vcons_data *vd = v;
struct wcfb_softc *sc = vd->cookie;

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_SVIDEO: {
int new_mode = *(int*)data;
if (new_mode != sc->sc_dpms) {
sc->sc_dpms = new_mode;
bus_space_write_4(sc->sc_regt, sc->sc_regh,
WC_DPMS_STATE,
(new_mode == WSDISPLAYIO_VIDEO_ON) ?
WC_DPMS_ON : WC_DPMS_STANDBY);
}
}
return 0;

case WSDISPLAYIO_GVIDEO:
*(int*)data = sc->sc_dpms;
return 0;

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

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

case WSDISPLAYIO_GET_FBINFO: {
struct wsdisplayio_fbinfo *fbi = data;

fbi->fbi_fbsize = sc->sc_fb8size;
fbi->fbi_fboffset = 0;
fbi->fbi_width = sc->sc_width;
fbi->fbi_height = sc->sc_height;
fbi->fbi_bitsperpixel = 8;
fbi->fbi_stride = sc->sc_stride;
fbi->fbi_pixeltype = WSFB_CI;
fbi->fbi_subtype.fbi_cmapinfo.cmap_entries = 256;
fbi->fbi_flags = WSFB_VRAM_IS_SPLIT;
return 0;
}
}
return EPASSTHROUGH;
}

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

/* XXX in theory the order is not fixed... */

if (offset < sc->sc_fb8size)
return bus_space_mmap(sc->sc_memt, sc->sc_fb + sc->sc_fb0off,
offset, prot,
BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE);
/*
* 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_dev(sc->sc_dev, "mmap() rejected.\n");
return -1;
}

/* may want to mmap() registers at some point */

return -1;
}

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

ri->ri_depth = 8;
ri->ri_width = sc->sc_width;
ri->ri_height = sc->sc_height;
ri->ri_stride = sc->sc_stride;
ri->ri_flg = RI_CENTER /*| RI_FULLCLEAR*/;

if (sc->sc_is_jfb) {
ri->ri_bits = sc->sc_fb0;
} else {
ri->ri_bits = sc->sc_shadow;
}
if (existing) {
ri->ri_flg |= RI_CLEAR;
}

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

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

ri->ri_hw = scr;
sc->putchar = ri->ri_ops.putchar;
sc->copyrows = ri->ri_ops.copyrows;
sc->eraserows = ri->ri_ops.eraserows;
sc->copycols = ri->ri_ops.copycols;
sc->erasecols = ri->ri_ops.erasecols;

if (sc->sc_is_jfb) {
ri->ri_ops.copyrows = wcfb_acc_copyrows;
ri->ri_ops.copycols = wcfb_acc_copycols;
ri->ri_ops.eraserows = wcfb_acc_eraserows;
ri->ri_ops.erasecols = wcfb_acc_erasecols;
ri->ri_ops.putchar = wcfb_acc_putchar;
ri->ri_ops.cursor = wcfb_acc_cursor;
} else {
ri->ri_ops.copyrows = wcfb_copyrows;
ri->ri_ops.copycols = wcfb_copycols;
ri->ri_ops.eraserows = wcfb_eraserows;
ri->ri_ops.erasecols = wcfb_erasecols;
ri->ri_ops.putchar = wcfb_putchar;
ri->ri_ops.cursor = wcfb_cursor;
}
}

static void
wcfb_putchar(void *cookie, int row, int col, u_int c, long attr)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_softc *sc = scr->scr_cookie;
int offset = (ri->ri_yorigin + row * ri->ri_font->fontheight) *
sc->sc_stride + ri->ri_xorigin + col * ri->ri_font->fontwidth;
uint8_t *from, *to0, *to1;
int i;

sc->putchar(ri, row, col, c, attr);
from = sc->sc_shadow + offset;
to0 = sc->sc_fb0 + offset;
to1 = sc->sc_fb1 + offset;
for (i = 0; i < ri->ri_font->fontheight; i++) {
memcpy(to0, from, ri->ri_font->fontwidth);
memcpy(to1, from, ri->ri_font->fontwidth);
to0 += sc->sc_stride;
to1 += sc->sc_stride;
from += sc->sc_stride;
}
}

static void
wcfb_putpalreg(struct wcfb_softc *sc, int i, int r, int g, int b)
{
uint32_t rgb;

bus_space_write_4(sc->sc_regt, sc->sc_regh, WC_CMAP_INDEX, i);
rgb = (b << 22) | (g << 12) | (r << 2);
bus_space_write_4(sc->sc_regt, sc->sc_regh, WC_CMAP_DATA, rgb);
}

static void
wcfb_cursor(void *cookie, int on, int row, int col)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_softc *sc = scr->scr_cookie;
int coffset;

if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {

if (ri->ri_flg & RI_CURSOR) {
/* remove cursor */
coffset = ri->ri_ccol + (ri->ri_crow * ri->ri_cols);
coffset += vcons_offset_to_zero(scr);
wcfb_putchar(cookie, ri->ri_crow,
ri->ri_ccol, scr->scr_chars[coffset],
scr->scr_attrs[coffset]);
ri->ri_flg &= ~RI_CURSOR;
}
ri->ri_crow = row;
ri->ri_ccol = col;
if (on) {
long attr, revattr;
coffset = col + (row * ri->ri_cols);
#ifdef WSDISPLAY_SCROLLSUPPORT
coffset += scr->scr_offset_to_zero;
#endif
attr = scr->scr_attrs[coffset];
revattr = attr ^ 0xffff0000;

wcfb_putchar(cookie, ri->ri_crow, ri->ri_ccol,
scr->scr_chars[coffset], revattr);
ri->ri_flg |= RI_CURSOR;
}
} else {
ri->ri_crow = row;
ri->ri_ccol = col;
ri->ri_flg &= ~RI_CURSOR;
}
}

static void
wcfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_softc *sc = scr->scr_cookie;
int offset = (ri->ri_yorigin + row * ri->ri_font->fontheight) *
sc->sc_stride + ri->ri_xorigin + dstcol * ri->ri_font->fontwidth;
uint8_t *from, *to0, *to1;
int i;

sc->copycols(ri, row, srccol, dstcol, ncols);
from = sc->sc_shadow + offset;
to0 = sc->sc_fb0 + offset;
to1 = sc->sc_fb1 + offset;
for (i = 0; i < ri->ri_font->fontheight; i++) {
memcpy(to0, from, ri->ri_font->fontwidth * ncols);
memcpy(to1, from, ri->ri_font->fontwidth * ncols);
to0 += sc->sc_stride;
to1 += sc->sc_stride;
from += sc->sc_stride;
}
}

static void
wcfb_erasecols(void *cookie, int row, int startcol, int ncols, long fillattr)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_softc *sc = scr->scr_cookie;
int offset = (ri->ri_yorigin + row * ri->ri_font->fontheight) *
sc->sc_stride + ri->ri_xorigin + startcol * ri->ri_font->fontwidth;
uint8_t *to0, *to1;
int i;

sc->erasecols(ri, row, startcol, ncols, fillattr);

to0 = sc->sc_fb0 + offset;
to1 = sc->sc_fb1 + offset;
for (i = 0; i < ri->ri_font->fontheight; i++) {
memset(to0, ri->ri_devcmap[(fillattr >> 16) & 0xff],
ri->ri_font->fontwidth * ncols);
memset(to1, ri->ri_devcmap[(fillattr >> 16) & 0xff],
ri->ri_font->fontwidth * ncols);
to0 += sc->sc_stride;
to1 += sc->sc_stride;
}
}

static void
wcfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_softc *sc = scr->scr_cookie;
int offset = (ri->ri_yorigin + dstrow * ri->ri_font->fontheight) *
sc->sc_stride + ri->ri_xorigin;
uint8_t *from, *to0, *to1;
int i;

sc->copyrows(ri, srcrow, dstrow, nrows);

from = sc->sc_shadow + offset;
to0 = sc->sc_fb0 + offset;
to1 = sc->sc_fb1 + offset;
for (i = 0; i < ri->ri_font->fontheight * nrows; i++) {
memcpy(to0, from, ri->ri_emuwidth);
memcpy(to1, from, ri->ri_emuwidth);
to0 += sc->sc_stride;
to1 += sc->sc_stride;
from += sc->sc_stride;
}
}

static void
wcfb_eraserows(void *cookie, int row, int nrows, long fillattr)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_softc *sc = scr->scr_cookie;
int offset = (ri->ri_yorigin + row * ri->ri_font->fontheight) *
sc->sc_stride + ri->ri_xorigin;
uint8_t *to0, *to1;
int i;

sc->eraserows(ri, row, nrows, fillattr);

to0 = sc->sc_fb0 + offset;
to1 = sc->sc_fb1 + offset;
for (i = 0; i < ri->ri_font->fontheight * nrows; i++) {
memset(to0, ri->ri_devcmap[(fillattr >> 16) & 0xff],
ri->ri_emuwidth);
memset(to1, ri->ri_devcmap[(fillattr >> 16) & 0xff],
ri->ri_emuwidth);
to0 += sc->sc_stride;
to1 += sc->sc_stride;
}
}

static void
wcfb_bitblt(struct wcfb_softc *sc, int sx, int sy, int dx, int dy, int w,
int h, uint32_t rop)
{
wcfb_rop_wait(sc);
wcfb_rop_jfb(sc, sx, sy, dx, dy, w, h, rop, 0x0f);
}

static void
wcfb_rectfill(struct wcfb_softc *sc, int x, int y, int w, int h, int bg)
{
int32_t mask;

/* clear everything just in case... */
wcfb_rop_wait(sc);
wcfb_rop_jfb(sc, x, y, x, y, w, h, WC_ROP_CLEAR, 0xffffffff);

/* pixels to set... */
mask = 0x0f & bg;
if (mask != 0) {
wcfb_rop_wait(sc);
wcfb_rop_jfb(sc, x, y, x, y, w, h, WC_ROP_SET, mask);
}

}

void
wcfb_rop_common(struct wcfb_softc *sc, bus_addr_t reg, int sx, int sy,
int dx, int dy, int w, int h, uint32_t rop, int32_t planemask)
{
int dir = 0;

/*
* Compute rop direction. This only really matters for
* screen-to-screen copies.
*/
if (sy < dy /* && sy + h > dy */) {
sy += h - 1;
dy += h;
dir |= WC_BLT_DIR_BACKWARDS_Y;
}
if (sx < dx /* && sx + w > dx */) {
sx += w - 1;
dx += w;
dir |= WC_BLT_DIR_BACKWARDS_X;
}

/* Which one of those below is your magic number for today? */
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x61000001);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x6301c080);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x80000000);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, rop);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, planemask);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x64000303);
/*
* This value is a pixel offset within the destination area. It is
* probably used to define complex polygon shapes, with the
* last pixel in the list being back to (0,0).
*/
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, WCFB_COORDS(0, 0));
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x00030000);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x2200010d);

bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x33f01000 | dir);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, WCFB_COORDS(dx, dy));
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, WCFB_COORDS(w, h));
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, WCFB_COORDS(sx, sy));
}

static void
wcfb_rop_jfb(struct wcfb_softc *sc, int sx, int sy, int dx, int dy,
int w, int h, uint32_t rop, int32_t planemask)
{
bus_addr_t reg = WC_JFB_ENGINE;
uint32_t spr, splr;

#if 0
/*
* Pick the current spr and splr values from the communication
* area if possible.
*/
if (sc->sc_comm != NULL) {
spr = sc->sc_comm[IFB_SHARED_TERM8_SPR >> 2];
splr = sc->sc_comm[IFB_SHARED_TERM8_SPLR >> 2];
} else
#endif
{
/* supposedly sane defaults */
spr = 0x54ff0303;
splr = 0x5c0000ff;
}

bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x00400016);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x5b000002);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x5a000000);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, spr);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, splr);

wcfb_rop_common(sc, reg, sx, sy, dx, dy, w, h, rop, planemask);

bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x5a000001);
bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, 0x5b000001);
}

static int
wcfb_rop_wait(struct wcfb_softc *sc)
{
int i;

for (i = 1000000; i != 0; i--) {
if (bus_space_read_4(sc->sc_regt, sc->sc_regh,
WC_STATUS) & WC_STATUS_DONE)
break;
delay(1);
}

return i;
}

static void
wcfb_acc_putchar(void *cookie, int row, int col, u_int c, long attr)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_softc *sc = scr->scr_cookie;
struct wsdisplay_font *font = PICK_FONT(ri, c);
int x, y, wi, he;
uint32_t bg;

wi = font->fontwidth;
he = font->fontheight;
x = ri->ri_xorigin + col * wi;
y = ri->ri_yorigin + row * he;
bg = ri->ri_devcmap[(attr >> 16) & 0xf];
if (c == 0x20) {
wcfb_rectfill(sc, x, y, wi, he, bg);
return;
}
/* we wait until the blitter is idle... */
wcfb_rop_wait(sc);
/* ... draw the character into buffer 0 ... */
sc->putchar(ri, row, col, c, attr);
/* ... and then blit it into buffer 1 */
wcfb_bitblt(sc, x, y, x, y, wi, he, WC_ROP_COPY);
}

static void
wcfb_acc_cursor(void *cookie, int on, int row, int col)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_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) {
wcfb_bitblt(sc, x, y, x, y, wi, he, WC_ROP_XOR);
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;
wcfb_bitblt(sc, x, y, x, y, wi, he, WC_ROP_XOR);
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
wcfb_acc_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_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;
wcfb_bitblt(sc, xs, y, xd, y, width, height, WC_ROP_COPY);
}
}

static void
wcfb_acc_erasecols(void *cookie, int row, int startcol, int ncols,
long fillattr)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_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);

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

static void
wcfb_acc_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_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;
wcfb_bitblt(sc, x, ys, x, yd, width, height, WC_ROP_COPY);
}
}

static void
wcfb_acc_eraserows(void *cookie, int row, int nrows, long fillattr)
{
struct rasops_info *ri = cookie;
struct vcons_screen *scr = ri->ri_hw;
struct wcfb_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;
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);

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