/*      $NetBSD: gftfb.c,v 1.41 2026/05/19 09:24:10 macallan Exp $      */

/*      $OpenBSD: sti_pci.c,v 1.7 2009/02/06 22:51:04 miod Exp $        */

/*
 * Copyright (c) 2006, 2007 Miodrag Vallat.
 ^                     2024 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, this permission notice, and the disclaimer below
 * 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 native driver for HP Visualize EG PCI graphics cards
 * STI portions are from Miodrag Vallat's sti_pci.c
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kmem.h>
#include <sys/device.h>
#include <sys/mutex.h>

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

#include <dev/ic/stireg.h>
#include <dev/ic/stivar.h>
#include <dev/ic/nglereg.h>
#include <hppa/dev/sti_pci_var.h>
#include "opt_gftfb.h"

#ifdef GFTFB_DEBUG
#define DPRINTF(s) printf(s)
#else
#define DPRINTF(s) /* */
#endif

int     gftfb_match(device_t, cfdata_t, void *);
void    gftfb_attach(device_t, device_t, void *);

struct  gftfb_softc {
        device_t                sc_dev;
        pci_chipset_tag_t       sc_pc;
        pcitag_t                sc_tag;

        /* stuff we need in order to use the STI ROM */
        struct sti_softc        sc_base;
        struct sti_screen       sc_scr;
        bus_space_handle_t      sc_romh;

        int sc_width, sc_height;
        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;
        void (*sc_putchar)(void *, int, int, u_int, long);
        u_char sc_cmap_red[256];
        u_char sc_cmap_green[256];
        u_char sc_cmap_blue[256];
        kmutex_t sc_hwlock;
        uint32_t sc_sba, sc_dba;
        /* cursor stuff */
        int sc_cursor_x, sc_cursor_y;
        int sc_hot_x, sc_hot_y, sc_enabled;
        int sc_video_on;
        glyphcache sc_gc;
};

CFATTACH_DECL_NEW(gftfb, sizeof(struct gftfb_softc),
    gftfb_match, gftfb_attach, NULL, NULL);

void    gftfb_enable_rom(struct sti_softc *);
void    gftfb_disable_rom(struct sti_softc *);

void    gftfb_setup(struct gftfb_softc *);

#define ngle_bt458_write(memt, memh, r, v) \
        bus_space_write_stream_4(memt, memh, NGLE_REG_RAMDAC + ((r) << 2), (v) << 24)


/* XXX these really need to go into their own header */
int     sti_pci_is_console(struct pci_attach_args *, bus_addr_t *);
int     sti_rom_setup(struct sti_rom *, bus_space_tag_t, bus_space_tag_t,
            bus_space_handle_t, bus_addr_t *, u_int);
int     sti_screen_setup(struct sti_screen *, int);
void    sti_describe_screen(struct sti_softc *, struct sti_screen *);

/* wsdisplay stuff */
static int      gftfb_ioctl(void *, void *, u_long, void *, int,
                             struct lwp *);
static paddr_t  gftfb_mmap(void *, void *, off_t, int);
static void     gftfb_init_screen(void *, struct vcons_screen *, int, long *);

static int      gftfb_putcmap(struct gftfb_softc *, struct wsdisplay_cmap *);
static int      gftfb_getcmap(struct gftfb_softc *, struct wsdisplay_cmap *);
static void     gftfb_restore_palette(struct gftfb_softc *);
static int      gftfb_putpalreg(struct gftfb_softc *, uint8_t, uint8_t,
                            uint8_t, uint8_t);

static void     gftfb_rectfill(struct gftfb_softc *, int, int, int, int,
                            uint32_t);
static void     gftfb_rectfill_a(void *, int, int, int, int, long);

static void     gftfb_bitblt(void *, int, int, int, int, int,
                            int, int);

static void     gftfb_cursor(void *, int, int, int);
static void     gftfb_putchar(void *, int, int, u_int, long);
static void     gftfb_putchar_aa(void *, int, int, u_int, long);
static int      gftfb_allocattr(void *, int, int, int, long *);
static void     gftfb_copycols(void *, int, int, int, int);
static void     gftfb_erasecols(void *, int, int, int, long);
static void     gftfb_copyrows(void *, int, int, int);
static void     gftfb_eraserows(void *, int, int, long);

static void     gftfb_move_cursor(struct gftfb_softc *, int, int);
static int      gftfb_do_cursor(struct gftfb_softc *, struct wsdisplay_cursor *);

static void     gftfb_set_video(struct gftfb_softc *, int);

struct wsdisplay_accessops gftfb_accessops = {
        gftfb_ioctl,
        gftfb_mmap,
        NULL,   /* alloc_screen */
        NULL,   /* free_screen */
        NULL,   /* show_screen */
        NULL,   /* load_font */
        NULL,   /* pollc */
        NULL    /* scroll */
};

static inline void gftfb_wait_fifo(struct gftfb_softc *, uint32_t);

int
gftfb_match(device_t parent, cfdata_t cf, void *aux)
{
        struct pci_attach_args *paa = aux;

        if (PCI_VENDOR(paa->pa_id) != PCI_VENDOR_HP)
                return 0;

        if (PCI_PRODUCT(paa->pa_id) == PCI_PRODUCT_HP_VISUALIZE_EG)
                return 10;      /* beat out sti at pci */

        return 0;
}

static inline uint32_t
gftfb_read4(struct gftfb_softc *sc, uint32_t offset)
{
        struct sti_rom *rom = sc->sc_base.sc_rom;
        bus_space_tag_t memt = rom->memt;
        bus_space_handle_t memh = rom->regh[2];
        return bus_space_read_stream_4(memt, memh, offset);
}

static inline void
gftfb_write4(struct gftfb_softc *sc, uint32_t offset, uint32_t val)
{
        struct sti_rom *rom = sc->sc_base.sc_rom;
        bus_space_tag_t memt = rom->memt;
        bus_space_handle_t memh = rom->regh[2];
        bus_space_write_stream_4(memt, memh, offset, val);
}

static inline uint8_t
gftfb_read1(struct gftfb_softc *sc, uint32_t offset)
{
        struct sti_rom *rom = sc->sc_base.sc_rom;
        bus_space_tag_t memt = rom->memt;
        bus_space_handle_t memh = rom->regh[2];
        return bus_space_read_1(memt, memh, offset);
}

static inline void
gftfb_write1(struct gftfb_softc *sc, uint32_t offset, uint8_t val)
{
        struct sti_rom *rom = sc->sc_base.sc_rom;
        bus_space_tag_t memt = rom->memt;
        bus_space_handle_t memh = rom->regh[2];
        bus_space_write_1(memt, memh, offset, val);
}

static inline void
gftfb_wait(struct gftfb_softc *sc)
{
        uint8_t stat;

        do {
                stat = gftfb_read1(sc, NGLE_BUSY);
                if (stat == 0)
                        stat = gftfb_read1(sc, NGLE_BUSY);
        } while (stat != 0);
}

static inline void
gftfb_wait_fifo(struct gftfb_softc *sc, uint32_t slots)
{
        uint32_t reg;

        do {
                reg = gftfb_read4(sc, NGLE_FIFO);
        } while (reg < slots);
}

static inline void
gftfb_sba(struct gftfb_softc *sc, uint32_t mode)
{
        if (sc->sc_sba != mode) {
                gftfb_wait(sc);
                gftfb_write4(sc, NGLE_SBA, mode);
                sc->sc_sba = mode;
        }
}

static inline void
gftfb_dba(struct gftfb_softc *sc, uint32_t mode)
{
        if (sc->sc_dba != mode) {
                gftfb_wait_fifo(sc, 2);
                gftfb_write4(sc, NGLE_DBA, mode);
                sc->sc_dba = mode;
        }
}

static inline void
gftfb_both(struct gftfb_softc *sc, uint32_t mode)
{
        if ((sc->sc_dba != mode) || (sc->sc_sba != mode)) {
                gftfb_wait(sc);
                gftfb_write4(sc, NGLE_BAboth, mode);
                sc->sc_dba = mode;
                sc->sc_sba = mode;
        }
}

void
gftfb_attach(device_t parent, device_t self, void *aux)
{
        struct gftfb_softc *sc = device_private(self);
        struct pci_attach_args *paa = aux;
        struct sti_rom *rom;
        struct rasops_info *ri;
        struct wsemuldisplaydev_attach_args aa;
        bus_size_t romsize;
        unsigned long defattr = 0;
        int ret, is_console = 0;

        sc->sc_dev = self;

        sc->sc_pc = paa->pa_pc;
        sc->sc_tag = paa->pa_tag;
        sc->sc_base.sc_dev = self;
        sc->sc_base.sc_enable_rom = gftfb_enable_rom;
        sc->sc_base.sc_disable_rom = gftfb_disable_rom;

        /* we can *not* be interrupted when doing colour map accesses */
        mutex_init(&sc->sc_hwlock, MUTEX_DEFAULT, IPL_HIGH);

        aprint_normal("\n");

        if (sti_pci_check_rom(&sc->sc_base, paa, &sc->sc_romh, &romsize) != 0)
                return;

        ret = sti_pci_is_console(paa, sc->sc_base. bases);
        if (ret != 0) {
                sc->sc_base.sc_flags |= STI_CONSOLE;
                is_console = 1;
        }
        rom = (struct sti_rom *)kmem_zalloc(sizeof(*rom), KM_SLEEP);
        rom->rom_softc = &sc->sc_base;
        ret = sti_rom_setup(rom, paa->pa_iot, paa->pa_memt, sc->sc_romh,
            sc->sc_base.bases, STI_CODEBASE_MAIN);
        if (ret != 0) {
                kmem_free(rom, sizeof(*rom));
                return;
        }

        sc->sc_base.sc_rom = rom;

        sc->sc_scr.scr_rom = sc->sc_base.sc_rom;
        ret = sti_screen_setup(&sc->sc_scr, STI_FBMODE);

        sc->sc_width = sc->sc_scr.scr_cfg.scr_width;
        sc->sc_height = sc->sc_scr.scr_cfg.scr_height;

        //bus_space_unmap(paa->pa_memt, sc->sc_romh, romsize);

        aprint_normal_dev(sc->sc_dev, "%s at %dx%d\n", sc->sc_scr.name,
            sc->sc_width, sc->sc_height);
        gftfb_setup(sc);

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

        sc->sc_defaultscreen_descr = (struct wsscreen_descr){
                "default",
                0, 0,
                NULL,
                8, 16,
                WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE |
                      WSSCREEN_RESIZE,
                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,
            &gftfb_accessops);
        sc->vd.init_screen = gftfb_init_screen;
        sc->vd.show_screen_cookie = &sc->sc_gc;
        sc->vd.show_screen_cb = glyphcache_adapt;

        ri = &sc->sc_console_screen.scr_ri;

        sc->sc_gc.gc_bitblt = gftfb_bitblt;
        sc->sc_gc.gc_blitcookie = sc;
        sc->sc_gc.gc_rectfill = gftfb_rectfill_a;
        sc->sc_gc.gc_rop = RopSrc;

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

        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,
                        sc->sc_scr.fbheight - sc->sc_height - 5,
                        sc->sc_scr.fbwidth,
                        ri->ri_font->fontwidth,
                        ri->ri_font->fontheight,
                        defattr);

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

        if (is_console) {
                wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0,
                    defattr);

                vcons_replay_msgbuf(&sc->sc_console_screen);
        }

        /* no suspend/resume support yet */
        if (!pmf_device_register(sc->sc_dev, NULL, NULL))
                aprint_error_dev(sc->sc_dev,
                    "couldn't establish power handler\n");

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

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

/*
 * Enable PCI ROM.
 */

void
gftfb_enable_rom(struct sti_softc *sc)
{
        struct gftfb_softc *spc = device_private(sc->sc_dev);
        uint32_t address;

        if (!ISSET(sc->sc_flags, STI_ROM_ENABLED)) {
                address = pci_conf_read(spc->sc_pc, spc->sc_tag, PCI_MAPREG_ROM);
                address |= PCI_MAPREG_ROM_ENABLE;
                pci_conf_write(spc->sc_pc, spc->sc_tag, PCI_MAPREG_ROM, address);
        }
        SET(sc->sc_flags, STI_ROM_ENABLED);
}

/*
 * Disable PCI ROM.
 */

void
gftfb_disable_rom(struct sti_softc *sc)
{
        struct gftfb_softc *spc = device_private(sc->sc_dev);
        uint32_t address;

        if (ISSET(sc->sc_flags, STI_ROM_ENABLED)) {
                address = pci_conf_read(spc->sc_pc, spc->sc_tag, PCI_MAPREG_ROM);
                address &= ~PCI_MAPREG_ROM_ENABLE;
                pci_conf_write(spc->sc_pc, spc->sc_tag, PCI_MAPREG_ROM, address);
        }
        CLR(sc->sc_flags, STI_ROM_ENABLED);
}

static inline void
gftfb_setup_fb(struct gftfb_softc *sc)
{
        gftfb_both(sc, BA(IndexedDcd, Otc04, Ots08, AddrByte, 0, BINapp0I, 0));
        gftfb_write4(sc, NGLE_IBO, 
            IBOvals(RopSrc, 0, BitmapExtent08, 0, DataDynamic, 1, 0, 0));
        gftfb_wait(sc);
        gftfb_write1(sc, NGLE_CONTROL_FB, 1);
}

void
gftfb_setup(struct gftfb_softc *sc)
{
        struct sti_rom *rom = sc->sc_base.sc_rom;
        bus_space_tag_t memt = rom->memt;
        bus_space_handle_t memh = rom->regh[2];
        int i;

        sc->sc_hot_x = 0;
        sc->sc_hot_y = 0;
        sc->sc_enabled = 0;
        sc->sc_video_on = 1;
        sc->sc_sba = sc->sc_dba = 0;

        /* set Bt458 read mask register to all planes */
        gftfb_wait(sc);
        ngle_bt458_write(memt, memh, 0x08, 0x04);
        ngle_bt458_write(memt, memh, 0x0a, 0xff);

        gftfb_setup_fb(sc);

        /* attr. planes */
        gftfb_wait(sc);
        gftfb_dba(sc, 
            BA(IndexedDcd, Otc32, OtsIndirect, AddrLong, 0, BINattr, 0));
        gftfb_write4(sc, NGLE_IBO,
            IBOvals(RopSrc, 0, BitmapExtent08, 1, DataDynamic, 0, 1, 0));
        gftfb_write4(sc, NGLE_CPR, NGLE_ARTIST_CMAP0);
        gftfb_write4(sc, NGLE_TRANSFER_DATA, 0xffffffff);

        gftfb_wait(sc);
        gftfb_write4(sc, NGLE_DST_XY, 0x00000000);
        gftfb_write4(sc, NGLE_RECT_SIZE_START,
            (sc->sc_scr.scr_cfg.scr_width << 16) | sc->sc_scr.scr_cfg.scr_height);
        /*
         * blit into offscreen memory to force flush previous - apparently
         * some chips have a bug this works around
         */
        gftfb_write4(sc, NGLE_DST_XY, 0x05000000);
        gftfb_write4(sc, NGLE_RECT_SIZE_START, 0x00040001);

        gftfb_wait(sc);
        gftfb_write4(sc, NGLE_CPR, 0x00000000);

        gftfb_setup_fb(sc);

        /* make sure video output is enabled */
        gftfb_wait(sc);
        gftfb_write4(sc, NGLE_EG_MISCVID,
            gftfb_read4(sc, NGLE_EG_MISCVID) | MISCVID_VIDEO_ON);
        gftfb_write4(sc, NGLE_EG_MISCCTL,
            gftfb_read4(sc, NGLE_EG_MISCCTL) | MISCCTL_VIDEO_ON);

        /* initialize cursor sprite */
        gftfb_wait(sc);

        /* cursor mask */
        gftfb_wait(sc);
        gftfb_write4(sc, NGLE_IBO, 0x300);
        gftfb_write4(sc, NGLE_PLANEMASK, 0xffffffff);
        gftfb_dba(sc, BA(IndexedDcd, Otc32, 0, AddrLong, 0, BINcmask, 0));
        gftfb_write4(sc, NGLE_BINC_DST, 0);
        for (i = 0; i < 64; i++) {
                gftfb_write4(sc, NGLE_BINC_DATA_R, 0xffffffff);
                gftfb_write4(sc, NGLE_BINC_DATA_DL, 0xffffffff);
        }

        /* cursor image */
        gftfb_wait(sc);
        gftfb_write4(sc, NGLE_IBO, 0x300);
        gftfb_write4(sc, NGLE_PLANEMASK, 0xffffffff);
        gftfb_dba(sc, BA(IndexedDcd, Otc32, 0, AddrLong, 0, BINcursor, 0));
        gftfb_write4(sc, NGLE_BINC_DST, 0);
        for (i = 0; i < 64; i++) {
                gftfb_write4(sc, NGLE_BINC_DATA_R, 0xff00ff00);
                gftfb_write4(sc, NGLE_BINC_DATA_DL, 0xff00ff00);
        }

        /* colour map */
        gftfb_both(sc, BA(FractDcd, Otc24, Ots08, Addr24, 0, BINcmap, 0));
        gftfb_write4(sc, NGLE_IBO, 
            IBOvals(RopSrc, 0, BitmapExtent08, 0, DataDynamic, MaskOtc, 0, 0));
        gftfb_write4(sc, NGLE_PLANEMASK, 0xffffffff);
        gftfb_wait(sc);
        gftfb_write4(sc, NGLE_BINC_DST, 0);
        gftfb_write4(sc, NGLE_BINC_DATA_R, 0);
        gftfb_write4(sc, NGLE_BINC_DATA_R, 0);
        gftfb_write4(sc, NGLE_BINC_DATA_R, 0x000000ff); /* BG */
        gftfb_write4(sc, NGLE_BINC_DATA_R, 0x00ff0000); /* FG */
        gftfb_wait(sc);
        gftfb_write4(sc, NGLE_BINC_SRC, 0);
        gftfb_write4(sc, NGLE_EG_LUTBLT, 0x80008004);
        gftfb_setup_fb(sc);

        gftfb_move_cursor(sc, 100, 100);

}

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

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

        case GCID:
                *(u_int *)data = STI_DD_EG;
                return 0;

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

        case WSDISPLAYIO_GET_BUSID:
                return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc,
                    sc->sc_tag, 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 gftfb_getcmap(sc,
                    (struct wsdisplay_cmap *)data);

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

        case WSDISPLAYIO_LINEBYTES:
                *(u_int *)data = 2048;
                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) {
                                gftfb_setup(sc);
                                gftfb_restore_palette(sc);
                                glyphcache_wipe(&sc->sc_gc);
                                gftfb_rectfill(sc, 0, 0, sc->sc_width,
                                    sc->sc_height, ms->scr_ri.ri_devcmap[
                                    (ms->scr_defattr >> 16) & 0xff]);
                                vcons_redraw_screen(ms);
                                gftfb_set_video(sc, 1);
                        } else
                                gftfb_setup_fb(sc);
                }
                }
                return 0;

        case WSDISPLAYIO_GET_FBINFO:
                {
                        struct wsdisplayio_fbinfo *fbi = data;
                        int ret;

                        ret = wsdisplayio_get_fbinfo(&ms->scr_ri, fbi);
                        fbi->fbi_fbsize = sc->sc_scr.fbheight * 2048;
                        return ret;
                }

        case WSDISPLAYIO_GCURPOS:
                {
                        struct wsdisplay_curpos *cp = (void *)data;

                        cp->x = sc->sc_cursor_x;
                        cp->y = sc->sc_cursor_y;
                }
                return 0;

        case WSDISPLAYIO_SCURPOS:
                {
                        struct wsdisplay_curpos *cp = (void *)data;

                        gftfb_move_cursor(sc, cp->x, cp->y);
                }
                return 0;

        case WSDISPLAYIO_GCURMAX:
                {
                        struct wsdisplay_curpos *cp = (void *)data;

                        cp->x = 64;
                        cp->y = 64;
                }
                return 0;

        case WSDISPLAYIO_SCURSOR:
                {
                        struct wsdisplay_cursor *cursor = (void *)data;

                        return gftfb_do_cursor(sc, cursor);
                }

        case WSDISPLAYIO_SVIDEO:
                gftfb_set_video(sc, *(int *)data);
                return 0;
        case WSDISPLAYIO_GVIDEO:
                *(u_int *)data = sc->sc_video_on ?
                    WSDISPLAYIO_VIDEO_ON : WSDISPLAYIO_VIDEO_OFF;
                return 0;
        }
        return EPASSTHROUGH;
}

static paddr_t
gftfb_mmap(void *v, void *vs, off_t offset, int prot)
{
        struct vcons_data *vd = v;
        struct gftfb_softc *sc = vd->cookie;
        struct sti_rom *rom = sc->sc_base.sc_rom;
        paddr_t pa = -1;

        if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)
                return -1;

        if (offset >= 0 && offset < sc->sc_scr.fblen) {
                /* framebuffer */
                pa = bus_space_mmap(rom->memt, sc->sc_scr.fbaddr, offset,
                    prot, BUS_SPACE_MAP_LINEAR);
        } else if (offset >= 0x80000000 && offset < 0x80400000) {
                /* blitter registers etc. */
                pa = bus_space_mmap(rom->memt, rom->regh[2],
                    offset - 0x80000000, prot, BUS_SPACE_MAP_LINEAR);
        }

        return pa;
}

static void
gftfb_init_screen(void *cookie, struct vcons_screen *scr,
    int existing, long *defattr)
{
        struct gftfb_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 = 2048;
        ri->ri_flg = RI_CENTER | RI_8BIT_IS_RGB | RI_FULLCLEAR |
                     RI_ENABLE_ALPHA | RI_PREFER_ALPHA;

        ri->ri_bits = (void *)sc->sc_scr.fbaddr;
        rasops_init(ri, 0, 0);
        ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE |
                      WSSCREEN_RESIZE;
        scr->scr_flags |= VCONS_LOADFONT;

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

        ri->ri_hw = scr;
        sc->sc_putchar = ri->ri_ops.putchar;
        ri->ri_ops.copyrows = gftfb_copyrows;
        ri->ri_ops.copycols = gftfb_copycols;
        ri->ri_ops.eraserows = gftfb_eraserows;
        ri->ri_ops.erasecols = gftfb_erasecols;
        ri->ri_ops.cursor = gftfb_cursor;
        ri->ri_ops.allocattr = gftfb_allocattr;
        if (FONT_IS_ALPHA(ri->ri_font)) {
                ri->ri_ops.putchar = gftfb_putchar_aa;
        } else
                ri->ri_ops.putchar = gftfb_putchar;
}

static int
gftfb_putcmap(struct gftfb_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++) {
                gftfb_putpalreg(sc, index, *r, *g, *b);
                index++;
                r++, g++, b++;
        }
        return 0;
}

static int
gftfb_getcmap(struct gftfb_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
gftfb_restore_palette(struct gftfb_softc *sc)
{
        uint8_t cmap[768];
        int i, j;

        j = 0;
        rasops_get_cmap(&sc->sc_console_screen.scr_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];
                gftfb_putpalreg(sc, i, cmap[j], cmap[j + 1], cmap[j + 2]);
                j += 3;
        }
}

static int
gftfb_putpalreg(struct gftfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g,
    uint8_t b)
{
        mutex_enter(&sc->sc_hwlock);
        gftfb_both(sc, BA(FractDcd, Otc24, Ots08, Addr24, 0, BINcmap, 0));
        gftfb_write4(sc, NGLE_IBO, 0x03000300);
        gftfb_write4(sc, NGLE_PLANEMASK, 0xffffffff);

        gftfb_wait(sc);
        gftfb_write4(sc, NGLE_BINC_DST, 0x400 | (idx << 2));
        gftfb_write4(sc, NGLE_BINC_DATA_R, (r << 16) | (g << 8) | b);

        gftfb_write4(sc, NGLE_BINC_SRC, 0x400);
        gftfb_write4(sc, NGLE_EG_LUTBLT, 0x80000100);
        gftfb_setup_fb(sc);
        mutex_exit(&sc->sc_hwlock);
        return 0;
}

static inline void
gftfb_fillmode(struct gftfb_softc *sc)
{
        gftfb_dba(sc,
            BA(IndexedDcd, Otc32, OtsIndirect, AddrLong, 0, BINapp0I, 0));
        gftfb_wait_fifo(sc, 3);
        gftfb_write4(sc, NGLE_PLANEMASK, 0xff);
        gftfb_write4(sc, NGLE_IBO,
            IBOvals(RopSrc, 0, BitmapExtent08, 1, DataDynamic, 0, 0, 0));
}

static void
gftfb_rectfill(struct gftfb_softc *sc, int x, int y, int wi, int he,
                      uint32_t bg)
{
        gftfb_fillmode(sc);

        gftfb_wait_fifo(sc, 4);

        gftfb_write4(sc, NGLE_TRANSFER_DATA, 0xffffffff);
        gftfb_write4(sc, NGLE_FG, bg);
        gftfb_write4(sc, NGLE_DST_XY, (x << 16) | y);
        gftfb_write4(sc, NGLE_RECT_SIZE_START, (wi << 16) | he);

}

static void
gftfb_rectfill_a(void *cookie, int dstx, int dsty,
    int width, int height, long attr)
{
        struct gftfb_softc *sc = cookie;

        gftfb_rectfill(sc, dstx, dsty, width, height,
            sc->vd.active->scr_ri.ri_devcmap[(attr >> 24 & 0xf)]);
}

static void
gftfb_bitblt(void *cookie, int xs, int ys, int xd, int yd, int wi,
                            int he, int rop)
{
        struct gftfb_softc *sc = cookie;

        gftfb_both(sc, BA(IndexedDcd, Otc04, Ots08, AddrLong, 0, BINapp0I, 0));
        gftfb_wait_fifo(sc, 5);
        gftfb_write4(sc, NGLE_IBO,
           IBOvals(rop, 0, BitmapExtent08, 1, DataDynamic, MaskOtc, 0, 0));
        gftfb_write4(sc, NGLE_PLANEMASK, 0xff);
        gftfb_write4(sc, NGLE_SRC_XY, (xs << 16) | ys);
        gftfb_write4(sc, NGLE_SIZE, (wi << 16) | he);
        gftfb_write4(sc, NGLE_BLT_DST_START, (xd << 16) | yd);
}

static void
gftfb_nuke_cursor(struct rasops_info *ri)
{
        struct vcons_screen *scr = ri->ri_hw;
        struct gftfb_softc *sc = scr->scr_cookie;
        int wi, he, x, y;

        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;
                gftfb_bitblt(sc, x, y, x, y, wi, he, RopInv);
                ri->ri_flg &= ~RI_CURSOR;
        }
}

static void
gftfb_cursor(void *cookie, int on, int row, int col)
{
        struct rasops_info *ri = cookie;
        struct vcons_screen *scr = ri->ri_hw;
        struct gftfb_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) {
                                gftfb_nuke_cursor(ri);
                        }
                        x = col * wi + ri->ri_xorigin;
                        y = row * he + ri->ri_yorigin;
                        gftfb_bitblt(sc, x, y, x, y, wi, he, RopInv);
                        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;
        }

}

static void
gftfb_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 gftfb_softc *sc = scr->scr_cookie;
        void *data;
        int i, x, y, wi, he;
        uint32_t bg, fg, mask, cmask;

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

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

        if (row == ri->ri_crow && col == ri->ri_ccol) {
                ri->ri_flg &= ~RI_CURSOR;
        }

        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];
        fg = ri->ri_devcmap[(attr >> 24) & 0x0f];

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

        data = WSFONT_GLYPH(c, font);

        /*
         * rectangle fills are implemented as colour expansion by the hardware,
         * so we can use the same settings and avoid a bunch of writes to DBA
         */
        gftfb_fillmode(sc);

        gftfb_wait_fifo(sc, 4);

        gftfb_write4(sc, NGLE_FG, fg);
        gftfb_write4(sc, NGLE_BG, bg);
        /* pixel address in 32bit since we're in AddrLong mode */
        gftfb_write4(sc, NGLE_BINC_DST, (x << 2) | (y << 13));
        /* make a mask covering the character width */
        cmask = 0xffffffff << (32 - wi);
        gftfb_write4(sc, NGLE_BINC_MASK, cmask);
        /*
         * ...and now we hammer pixel data into BINC, moving down.
         * Unlike FX, we *can* overrun the pipeline with BINC writes,
         * especially with colour expansion while scrolling.
         * HCRX seems to have a 32 entry pipeline, let's assume we won't
         * encounter fonts taller than that for now...
         */
        if (he > 31) {
                gftfb_wait(sc);
        } else
                gftfb_wait_fifo(sc, he);

        if (attr & WSATTR_HILIT) {
                if (ri->ri_font->stride == 1) {
                        uint8_t *data8 = data;
                        for (i = 0; i < he; i++) {
                                mask = *data8;
                                mask |= mask >> 1;
                                gftfb_write4(sc, NGLE_BINC_DATA_D, mask << 24);
                                data8++;
                        }
                } else {
                        uint16_t *data16 = data;
                        for (i = 0; i < he; i++) {
                                mask = *data16;
                                mask |= mask >> 1;
                                gftfb_write4(sc, NGLE_BINC_DATA_D, mask << 16);
                                data16++;
                        }
                }
        } else {
                if (ri->ri_font->stride == 1) {
                        uint8_t *data8 = data;
                        for (i = 0; i < he; i++) {
                                mask = *data8;
                                gftfb_write4(sc, NGLE_BINC_DATA_D, mask << 24);
                                data8++;
                        }
                } else {
                        uint16_t *data16 = data;
                        for (i = 0; i < he; i++) {
                                mask = *data16;
                                gftfb_write4(sc, NGLE_BINC_DATA_D, mask << 16);
                                data16++;
                        }
                }
        }

        if (attr & WSATTR_UNDERLINE) {
                gftfb_wait_fifo(sc, 2);
                gftfb_write4(sc, NGLE_BINC_DST,
                    (x << 2) | ((y + he - 2) << 13));
                gftfb_write4(sc, NGLE_BINC_DATA_D, cmask);
        }
}

static void
gftfb_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 gftfb_softc *sc = scr->scr_cookie;
        int x, y, wi, he, rv = GC_NOPE;
        uint32_t bg;
        uint32_t latch = 0, bg8, fg8, pixel, mask;
        int i, line, r, g, b, aval;
        int r1, g1, b1, r0, g0, b0, fgo, bgo;
        uint8_t *data8;

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

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

        if (row == ri->ri_crow && col == ri->ri_ccol) {
                ri->ri_flg &= ~RI_CURSOR;
        }

        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) {
                gftfb_rectfill(sc, x, y, wi, he, bg);
                if (attr & WSATTR_UNDERLINE)
                        glyphcache_underline(&sc->sc_gc, x, y, attr);
                return;
        }

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

        gftfb_dba(sc, BA(IndexedDcd, Otc04, Ots08, AddrLong, 0, BINapp0I, 0));
        gftfb_wait_fifo(sc, 6);
        gftfb_write4(sc, NGLE_PLANEMASK, 0xff);
        gftfb_write4(sc, NGLE_IBO,
            IBOvals(RopSrc, 0, BitmapExtent08, 1, DataDynamic, MaskOtc, 0, 0));

        /*
         * 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];
        r1 = rasops_cmap[fgo];
        g0 = rasops_cmap[bgo + 1];
        g1 = rasops_cmap[fgo + 1];
        b0 = rasops_cmap[bgo + 2];
        b1 = rasops_cmap[fgo + 2];
#define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6))
        bg8 = R3G3B2(r0, g0, b0);
        fg8 = R3G3B2(r1, g1, b1);

        /*
         * This is for masking off pixels at the end of a line if it's not a
         * multiple of 4. Would be nice if we knew where the clipping registers
         * live...
         */
        mask = 0xf0000000 << (4 - (wi & 3));

        data8 = WSFONT_GLYPH(c, font);

        for (line = 0; line < he; line++) {
                /* setup BINC write */
                gftfb_wait_fifo(sc, wi / 2);
                gftfb_write4(sc, NGLE_BINC_DST, (x << 2) | ((y + line) << 13));
                gftfb_write4(sc, NGLE_BINC_MASK, 0xffffffff);
                for (i = 0; i < wi; i++) {
                        aval = *data8;
                        if (aval == 0) {
                                pixel = bg8;
                        } else if (aval == 255) {
                                pixel = fg8;
                        } 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 = (latch << 8) | pixel;
                        /* write in 32bit chunks */
                        if ((i & 3) == 3) {
                                gftfb_write4(sc, NGLE_BINC_DATA_R, latch);
                                latch = 0;
                        }
                        data8++;
                }
                /* if we have pixels left in latch write them out */
                if ((i & 3) != 0) {
                        latch = latch << ((4 - (i & 3)) << 3);
                        /* make sure we write only the pixels in the latch */
                        gftfb_write4(sc, NGLE_BINC_MASK, mask);
                        gftfb_write4(sc, NGLE_BINC_DATA_R, latch);
                }
        }

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

static int
gftfb_allocattr(void *cookie, int fg0, int bg0, int flg, long *attr)
{
        struct rasops_info *ri = cookie;
        int fg = fg0, bg = bg0;

        if ((flg & WSATTR_BLINK) != 0)
                return EINVAL;

        if ((flg & WSATTR_REVERSE) != 0) {
                fg = bg0;
                bg = fg0;
        }

        if (FONT_IS_ALPHA(ri->ri_font) && ((flg & WSATTR_HILIT) != 0)) {
                fg = fg0 < 8 ? fg0 + 8 : fg0;
        }

        *attr = (bg << 16) | (fg << 24) | flg;
        return 0;
}

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

        if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) {
                if (ri->ri_crow == row &&
                   (ri->ri_ccol >= srccol && ri->ri_ccol < (srccol + ncols)) &&
                   (ri->ri_flg & RI_CURSOR)) {
                        gftfb_nuke_cursor(ri);
                }

                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;
                gftfb_bitblt(sc, xs, y, xd, y, width, height, RopSrc);
                if (ri->ri_crow == row &&
                   (ri->ri_ccol >= dstcol && ri->ri_ccol < (dstcol + ncols)))
                        ri->ri_flg &= ~RI_CURSOR;
        }
}

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

                gftfb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]);
                if (ri->ri_crow == row &&
                   (ri->ri_ccol >= startcol && ri->ri_ccol < (startcol + ncols)))
                        ri->ri_flg &= ~RI_CURSOR;
        }
}

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

        if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) {
                if ((ri->ri_crow >= srcrow && ri->ri_crow < (srcrow + nrows)) &&
                   (ri->ri_flg & RI_CURSOR)) {
                        gftfb_nuke_cursor(ri);
                }
                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;
                gftfb_bitblt(sc, x, ys, x, yd, width, height, RopSrc);
                if (ri->ri_crow >= dstrow && ri->ri_crow < (dstrow + nrows))
                        ri->ri_flg &= ~RI_CURSOR;
        }
}

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

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

                if (ri->ri_crow >= row && ri->ri_crow < (row + nrows))
                        ri->ri_flg &= ~RI_CURSOR;
        }
}

/*
 * cursor sprite handling
 * like most hw info, xf86 3.3 -> nglehdw.h was used as documentation
 * problem is, the PCI EG doesn't quite behave like an S9000_ID_ARTIST
 * the cursor position register behaves like the one on HCRX while using
 * the same address as Artist, including the enable bit and weird handling
 * of negative coordinates. The rest of it, colour map, sprite image etc.,
 * behave like Artist.
 */

static void
gftfb_move_cursor(struct gftfb_softc *sc, int x, int y)
{
        uint32_t pos;

        sc->sc_cursor_x = x;
        x -= sc->sc_hot_x;
        sc->sc_cursor_y = y;
        y -= sc->sc_hot_y;

        if (x < 0) x = 0x1000 - x;
        if (y < 0) y = 0x1000 - y;
        pos = (x << 16) | y;
        if (sc->sc_enabled) pos |= 0x80000000;
        gftfb_wait_fifo(sc, 2);
        gftfb_write4(sc, NGLE_EG_CURSOR, pos);
}

static int
gftfb_do_cursor(struct gftfb_softc *sc, struct wsdisplay_cursor *cur)
{
        if (cur->which & WSDISPLAY_CURSOR_DOCUR) {

                sc->sc_enabled = cur->enable;
                cur->which |= WSDISPLAY_CURSOR_DOPOS;
        }
        if (cur->which & WSDISPLAY_CURSOR_DOHOT) {

                sc->sc_hot_x = cur->hot.x;
                sc->sc_hot_y = cur->hot.y;
                cur->which |= WSDISPLAY_CURSOR_DOPOS;
        }
        if (cur->which & WSDISPLAY_CURSOR_DOPOS) {

                gftfb_move_cursor(sc, cur->pos.x, cur->pos.y);
        }
        if (cur->which & WSDISPLAY_CURSOR_DOCMAP) {
                uint32_t rgb;
                uint8_t r[2], g[2], b[2];

                copyin(cur->cmap.blue, b, 2);
                copyin(cur->cmap.green, g, 2);
                copyin(cur->cmap.red, r, 2);
                mutex_enter(&sc->sc_hwlock);
                gftfb_both(sc,
                    BA(FractDcd, Otc24, Ots08, Addr24, 0, BINcmap, 0));
                gftfb_write4(sc, NGLE_IBO, 
                    IBOvals(RopSrc, 0, BitmapExtent08, 0, DataDynamic, MaskOtc,
                    0, 0));
                gftfb_write4(sc, NGLE_PLANEMASK, 0xffffffff);
                gftfb_wait(sc);
                gftfb_write4(sc, NGLE_BINC_DST, 0);
                gftfb_write4(sc, NGLE_BINC_DATA_R, 0);
                gftfb_write4(sc, NGLE_BINC_DATA_R, 0);
                rgb = (r[0] << 16) | (g[0] << 8) | b[0];
                gftfb_write4(sc, NGLE_BINC_DATA_R, rgb);        /* BG */
                rgb = (r[1] << 16) | (g[1] << 8) | b[1];
                gftfb_write4(sc, NGLE_BINC_DATA_R, rgb);        /* FG */
                gftfb_write4(sc, NGLE_BINC_SRC, 0);
                gftfb_write4(sc, NGLE_EG_LUTBLT, 0x80008004);
                gftfb_setup_fb(sc);
                mutex_exit(&sc->sc_hwlock);

        }
        if (cur->which & WSDISPLAY_CURSOR_DOSHAPE) {
                uint32_t buffer[128], latch, tmp;
                int i;

                copyin(cur->mask, buffer, 512);
                gftfb_wait(sc);
                gftfb_write4(sc, NGLE_IBO, 0x300);
                gftfb_write4(sc, NGLE_PLANEMASK, 0xffffffff);
                gftfb_dba(sc,
                    BA(IndexedDcd, Otc32, 0, AddrLong, 0, BINcmask, 0));
                gftfb_write4(sc, NGLE_BINC_DST, 0);
                for (i = 0; i < 128; i += 2) {
                        latch = 0;
                        tmp = buffer[i] & 0x80808080;
                        latch |= tmp >> 7;
                        tmp = buffer[i] & 0x40404040;
                        latch |= tmp >> 5;
                        tmp = buffer[i] & 0x20202020;
                        latch |= tmp >> 3;
                        tmp = buffer[i] & 0x10101010;
                        latch |= tmp >> 1;
                        tmp = buffer[i] & 0x08080808;
                        latch |= tmp << 1;
                        tmp = buffer[i] & 0x04040404;
                        latch |= tmp << 3;
                        tmp = buffer[i] & 0x02020202;
                        latch |= tmp << 5;
                        tmp = buffer[i] & 0x01010101;
                        latch |= tmp << 7;
                        gftfb_write4(sc, NGLE_BINC_DATA_R, latch);
                        latch = 0;
                        tmp = buffer[i + 1] & 0x80808080;
                        latch |= tmp >> 7;
                        tmp = buffer[i + 1] & 0x40404040;
                        latch |= tmp >> 5;
                        tmp = buffer[i + 1] & 0x20202020;
                        latch |= tmp >> 3;
                        tmp = buffer[i + 1] & 0x10101010;
                        latch |= tmp >> 1;
                        tmp = buffer[i + 1] & 0x08080808;
                        latch |= tmp << 1;
                        tmp = buffer[i + 1] & 0x04040404;
                        latch |= tmp << 3;
                        tmp = buffer[i + 1] & 0x02020202;
                        latch |= tmp << 5;
                        tmp = buffer[i + 1] & 0x01010101;
                        latch |= tmp << 7;
                        gftfb_write4(sc, NGLE_BINC_DATA_DL, latch);
                }

                copyin(cur->image, buffer, 512);
                gftfb_wait(sc);
                gftfb_write4(sc, NGLE_IBO, 0x300);
                gftfb_write4(sc, NGLE_PLANEMASK, 0xffffffff);
                gftfb_dba(sc,
                    BA(IndexedDcd, Otc32, 0, AddrLong, 0, BINcursor, 0));
                gftfb_write4(sc, NGLE_BINC_DST, 0);
                for (i = 0; i < 128; i += 2) {
                        latch = 0;
                        tmp = buffer[i] & 0x80808080;
                        latch |= tmp >> 7;
                        tmp = buffer[i] & 0x40404040;
                        latch |= tmp >> 5;
                        tmp = buffer[i] & 0x20202020;
                        latch |= tmp >> 3;
                        tmp = buffer[i] & 0x10101010;
                        latch |= tmp >> 1;
                        tmp = buffer[i] & 0x08080808;
                        latch |= tmp << 1;
                        tmp = buffer[i] & 0x04040404;
                        latch |= tmp << 3;
                        tmp = buffer[i] & 0x02020202;
                        latch |= tmp << 5;
                        tmp = buffer[i] & 0x01010101;
                        latch |= tmp << 7;
                        gftfb_write4(sc, NGLE_BINC_DATA_R, latch);
                        latch = 0;
                        tmp = buffer[i + 1] & 0x80808080;
                        latch |= tmp >> 7;
                        tmp = buffer[i + 1] & 0x40404040;
                        latch |= tmp >> 5;
                        tmp = buffer[i + 1] & 0x20202020;
                        latch |= tmp >> 3;
                        tmp = buffer[i + 1] & 0x10101010;
                        latch |= tmp >> 1;
                        tmp = buffer[i + 1] & 0x08080808;
                        latch |= tmp << 1;
                        tmp = buffer[i + 1] & 0x04040404;
                        latch |= tmp << 3;
                        tmp = buffer[i + 1] & 0x02020202;
                        latch |= tmp << 5;
                        tmp = buffer[i + 1] & 0x01010101;
                        latch |= tmp << 7;
                        gftfb_write4(sc, NGLE_BINC_DATA_DL, latch);
                }
                gftfb_setup_fb(sc);
        }

        return 0;
}

static void
gftfb_set_video(struct gftfb_softc *sc, int on)
{
        if (sc->sc_video_on == on)
                return;

        sc->sc_video_on = on;

        gftfb_wait(sc);
        if (on) {
                gftfb_write4(sc, NGLE_EG_MISCVID,
                    gftfb_read4(sc, NGLE_EG_MISCVID) | MISCVID_VIDEO_ON);
                gftfb_write4(sc, NGLE_EG_MISCCTL,
                    gftfb_read4(sc, NGLE_EG_MISCCTL) | MISCCTL_VIDEO_ON);
        } else {
                gftfb_write4(sc, NGLE_EG_MISCVID,
                    gftfb_read4(sc, NGLE_EG_MISCVID) &  ~MISCVID_VIDEO_ON);
                gftfb_write4(sc, NGLE_EG_MISCCTL,
                    gftfb_read4(sc, NGLE_EG_MISCCTL) & ~MISCCTL_VIDEO_ON);
        }
}