/*      $NetBSD: cgfourteen.c,v 1.100 2026/07/13 08:42:06 macallan Exp $ */

/*
 * Copyright (c) 1996
 *      The President and Fellows of Harvard College. All rights reserved.
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * All advertising materials mentioning features or use of this software
 * must display the following acknowledgement:
 *      This product includes software developed by Harvard University.
 *      This product includes software developed by the University of
 *      California, Lawrence Berkeley Laboratory.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 *      This product includes software developed by Harvard University and
 *      its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *   Based on:
 *      NetBSD: cgthree.c,v 1.28 1996/05/31 09:59:22 pk Exp
 *      NetBSD: cgsix.c,v 1.25 1996/04/01 17:30:00 christos Exp
 */

/*
 * Driver for Campus-II on-board mbus-based video (cgfourteen).
 *
 * Does not handle interrupts, even though they can occur.
 *
 * XXX should defer colormap updates to vertical retrace interrupts
 */

#include "opt_wsemul.h"
#include "sx.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/kmem.h>
#include <sys/mman.h>
#include <sys/tty.h>
#include <sys/conf.h>
#include <dev/pci/pciio.h>

#include <uvm/uvm_extern.h>

#include <dev/sun/fbio.h>
#include <machine/autoconf.h>
#include <machine/pmap.h>
#include <dev/sun/fbvar.h>
#include <machine/cpu.h>
#include <dev/sbus/sbusvar.h>

#include "wsdisplay.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 <sparc/sparc/asm.h>
#include <sparc/dev/cgfourteenreg.h>
#include <sparc/dev/cgfourteenvar.h>
#include <sparc/dev/sxreg.h>
#include <sparc/dev/sxvar.h>

/* autoconfiguration driver */
static int      cgfourteenmatch(device_t, struct cfdata *, void *);
static void     cgfourteenattach(device_t, device_t, void *);
static void     cgfourteenunblank(device_t);

CFATTACH_DECL_NEW(cgfourteen, sizeof(struct cgfourteen_softc),
    cgfourteenmatch, cgfourteenattach, NULL, NULL);

extern struct cfdriver cgfourteen_cd;

dev_type_open(cgfourteenopen);
dev_type_close(cgfourteenclose);
dev_type_ioctl(cgfourteenioctl);
dev_type_mmap(cgfourteenmmap);
dev_type_poll(cgfourteenpoll);

const struct cdevsw cgfourteen_cdevsw = {
        .d_open = cgfourteenopen,
        .d_close = cgfourteenclose,
        .d_read = noread,
        .d_write = nowrite,
        .d_ioctl = cgfourteenioctl,
        .d_stop = nostop,
        .d_tty = notty,
        .d_poll = cgfourteenpoll,
        .d_mmap = cgfourteenmmap,
        .d_kqfilter = nokqfilter,
        .d_discard = nodiscard,
        .d_flag = 0
};

/* frame buffer generic driver */
static struct fbdriver cgfourteenfbdriver = {
        cgfourteenunblank, cgfourteenopen, cgfourteenclose, cgfourteenioctl,
        cgfourteenpoll, cgfourteenmmap, nokqfilter
};

static void cg14_set_video(struct cgfourteen_softc *, int);
static int  cg14_get_video(struct cgfourteen_softc *);
static int  cg14_get_cmap(struct fbcmap *, union cg14cmap *, int);
static int  cg14_put_cmap(struct fbcmap *, union cg14cmap *, int);
static void cg14_load_hwcmap(struct cgfourteen_softc *, int, int);
static void cg14_init(struct cgfourteen_softc *);
static void cg14_reset(struct cgfourteen_softc *);

#if NWSDISPLAY > 0
static void cg14_setup_wsdisplay(struct cgfourteen_softc *, int);
static void cg14_init_cmap(struct cgfourteen_softc *);
static int  cg14_putcmap(struct cgfourteen_softc *, struct wsdisplay_cmap *);
static int  cg14_getcmap(struct cgfourteen_softc *, struct wsdisplay_cmap *);
static void cg14_set_depth(struct cgfourteen_softc *, int);
static void cg14_move_cursor(struct cgfourteen_softc *, int, int);
static int  cg14_do_cursor(struct cgfourteen_softc *,
                           struct wsdisplay_cursor *);

#if NSX > 0
static void cg14_wait_idle(struct cgfourteen_softc *);
static void cg14_rectfill(struct cgfourteen_softc *, int, int, int, int,
    uint32_t);
static void cg14_rectfill_a(void *, int, int, int, int, long);
static void cg14_invert(struct cgfourteen_softc *, int, int, int, int);
static void cg14_bitblt(void *, int, int, int, int, int, int, int);
static void cg14_bitblt_gc(void *, int, int, int, int, int, int, int);

static void cg14_putchar_aa(void *, int, int, u_int, long);
static void cg14_cursor(void *, int, int, int);
static void cg14_putchar(void *, int, int, u_int, long);
static void cg14_copycols(void *, int, int, int, int);
static void cg14_erasecols(void *, int, int, int, long);
static void cg14_copyrows(void *, int, int, int);
static void cg14_eraserows(void *, int, int, long);

/* 
 * issue ALU instruction:
 * sxi(OPCODE, srcA, srcB, dest, count)
 */
#define sxi(inst, a, b, d, cnt) \
        sx_wait(sc->sc_sx); \
        sx_write(sc->sc_sx, SX_INSTRUCTIONS, inst((a), (b), (d), (cnt)))

/*
 * issue memory referencing instruction:
 * sxm(OPCODE, address, start register, count)
 */
#define sxm(inst, addr, reg, count) sta((addr) & ~7, ASI_SX, inst((reg), (count), (addr) & 7))

#endif /* NSX > 0 */

#endif

/*
 * Match a cgfourteen.
 */
int
cgfourteenmatch(device_t parent, struct cfdata *cf, void *aux)
{
        union obio_attach_args *uoba = aux;
        struct sbus_attach_args *sa = &uoba->uoba_sbus;

        /*
         * The cgfourteen is a local-bus video adaptor, accessed directly
         * via the processor, and not through device space or an external
         * bus. Thus we look _only_ at the obio bus.
         * Additionally, these things exist only on the Sun4m.
         */

        if (uoba->uoba_isobio4 != 0 || !CPU_ISSUN4M)
                return (0);

        /* Check driver name */
        return (strcmp(cf->cf_name, sa->sa_name) == 0);
}

#if NWSDISPLAY > 0
static int      cg14_ioctl(void *, void *, u_long, void *, int, struct lwp *);
static paddr_t  cg14_mmap(void *, void *, off_t, int);
static void     cg14_init_screen(void *, struct vcons_screen *, int, long *);


struct wsdisplay_accessops cg14_accessops = {
        cg14_ioctl,
        cg14_mmap,
        NULL,   /* alloc_screen */
        NULL,   /* free_screen */
        NULL,   /* show_screen */
        NULL,   /* load_font */
        NULL,   /* pollc */
        NULL    /* scroll */
};
#endif

/*
 * Attach a display.  We need to notice if it is the console, too.
 */
void
cgfourteenattach(device_t parent, device_t self, void *aux)
{
        union obio_attach_args *uoba = aux;
        struct sbus_attach_args *sa = &uoba->uoba_sbus;
        struct cgfourteen_softc *sc = device_private(self);
        struct fbdevice *fb = &sc->sc_fb;
        bus_space_handle_t bh;
        int node;
        volatile uint32_t *lut;
        int i, isconsole, items;
        uint32_t fbva[2] = {0, 0};
        uint32_t *ptr = fbva;
        int ver, impl;
#if NSX > 0
        device_t dv;
        deviter_t di;
#endif

        sc->sc_dev = self;
        sc->sc_opens = 0;
        node = sa->sa_node;

        /* Remember cookies for cgfourteenmmap() */
        sc->sc_bustag = sa->sa_bustag;

        fb->fb_driver = &cgfourteenfbdriver;
        fb->fb_device = sc->sc_dev;
        /* Mask out invalid flags from the user. */
        fb->fb_flags = device_cfdata(sc->sc_dev)->cf_flags & FB_USERMASK;

        fb->fb_type.fb_type = FBTYPE_MDICOLOR;
        fb->fb_type.fb_depth = 32;

        fb_setsize_obp(fb, sc->sc_fb.fb_type.fb_depth, 1152, 900, node);

        fb->fb_type.fb_cmsize = CG14_CLUT_SIZE;

        if (sa->sa_nreg < 2) {
                printf("%s: only %d register sets\n",
                        device_xname(self), sa->sa_nreg);
                return;
        }
        memcpy(sc->sc_physadr, sa->sa_reg,
              sa->sa_nreg * sizeof(struct sbus_reg));

        sc->sc_vramsize = sc->sc_physadr[CG14_PXL_IDX].sbr_size;
        fb->fb_type.fb_size = sc->sc_vramsize;

        printf(": %d MB VRAM", (uint32_t)(sc->sc_vramsize >> 20));
        /*
         * Now map in the 8 useful pages of registers
         */
        if (sa->sa_size < 0x10000) {
#ifdef DIAGNOSTIC
                printf("warning: can't find all cgfourteen registers...\n");
#endif
                sa->sa_size = 0x10000;
        }
        if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
                         sa->sa_offset,
                         sa->sa_size,
                         BUS_SPACE_MAP_LINEAR,
                         &bh) != 0) {
                printf("%s: cannot map control registers\n",
                    device_xname(self));
                return;
        }
        sc->sc_regh = bh;
        sc->sc_regaddr = BUS_ADDR(sa->sa_slot, sa->sa_offset);
        sc->sc_fbaddr = BUS_ADDR(sc->sc_physadr[CG14_PXL_IDX].sbr_slot,
                                sc->sc_physadr[CG14_PXL_IDX].sbr_offset);

        sc->sc_ctl   = (struct cg14ctl  *) (bh);
        sc->sc_hwc   = (struct cg14curs *) (bh + CG14_OFFSET_CURS);
        sc->sc_dac   = (struct cg14dac  *) (bh + CG14_OFFSET_DAC);
        sc->sc_xlut  = (struct cg14xlut *) (bh + CG14_OFFSET_XLUT);
        sc->sc_clut1 = (struct cg14clut *) (bh + CG14_OFFSET_CLUT1);
        sc->sc_clut2 = (struct cg14clut *) (bh + CG14_OFFSET_CLUT2);
        sc->sc_clut3 = (struct cg14clut *) (bh + CG14_OFFSET_CLUT3);
        sc->sc_clutincr =        (u_int *) (bh + CG14_OFFSET_CLUTINCR);

        /*
         * Let the user know that we're here
         */
        printf(": %dx%d",
                fb->fb_type.fb_width, fb->fb_type.fb_height);

        /*
         * Enable the video.
         */
        cg14_set_video(sc, 1);

        /*
         * Grab the initial colormap
         */
        lut = sc->sc_clut1->clut_lut;
        for (i = 0; i < CG14_CLUT_SIZE; i++)
                sc->sc_cmap.cm_chip[i] = lut[i];

        /* See if we're the console */
        isconsole = fb_is_console(node);

#if NWSDISPLAY > 0
        prom_getprop(sa->sa_node, "address", 4, &items, &ptr);
        if (fbva[1] == 0) {
                if (sbus_bus_map( sc->sc_bustag,
                    sc->sc_physadr[CG14_PXL_IDX].sbr_slot,
                    sc->sc_physadr[CG14_PXL_IDX].sbr_offset,
                    sc->sc_vramsize, BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_LARGE,
                    &bh) != 0) {
                        printf("%s: cannot map pixels\n", 
                                device_xname(sc->sc_dev));
                        return;
                }
                sc->sc_fb.fb_pixels = bus_space_vaddr(sc->sc_bustag, bh);
        } else {
                sc->sc_fb.fb_pixels = (void *)fbva[1];
        }

        if (isconsole)
                printf(" (console)\n");
        else
                printf("\n");

        sc->sc_fbdepth = 32;
        ver = sc->sc_ctl->ctl_rsr & CG14_RSR_REVMASK;
        impl = sc->sc_ctl->ctl_rsr & CG14_RSR_IMPLMASK;
        aprint_normal_dev(sc->sc_dev, "rev %d, %d CLUTs\n",
                ver == 0 ? 1 : 2,
                (impl & 1) == 0 ? 2 : 3);

        sc->sc_depth = 8;

#if NSX > 0
        /* see if we've got an SX to help us */
        sc->sc_sx = NULL;
        for (dv = deviter_first(&di, DEVITER_F_ROOT_FIRST);
            dv != NULL;
            dv = deviter_next(&di)) {
                if (device_is_a(dv, "sx")) {
                        sc->sc_sx = device_private(dv);
                }
        }
        deviter_release(&di);
        if (sc->sc_sx != NULL) {
                sc->sc_fb_paddr = bus_space_mmap(sc->sc_bustag,
                    sc->sc_fbaddr, 0, 0, 0) & 0xfffff000;
                aprint_normal_dev(sc->sc_dev, "using %s\n", 
                    device_xname(sc->sc_sx->sc_dev));
                aprint_normal_dev(sc->sc_dev, "fb paddr: %08x\n",
                    sc->sc_fb_paddr);
                sx_write(sc->sc_sx, SX_PAGE_BOUND_LOWER, sc->sc_fb_paddr);
                sx_write(sc->sc_sx, SX_PAGE_BOUND_UPPER,
                    sc->sc_fb_paddr + 0x03ffffff);
        }
        cg14_wait_idle(sc);
#endif
        cg14_setup_wsdisplay(sc, isconsole);
#endif

        /* Attach to /dev/fb */
        fb_attach(&sc->sc_fb, isconsole);

}

/*
 * Keep track of the number of opens made. In the 24-bit driver, we need to
 * switch to 24-bit mode on the first open, and switch back to 8-bit on
 * the last close. This kind of nonsense is needed to give screenblank
 * a fighting chance of working.
 */
 
int
cgfourteenopen(dev_t dev, int flags, int mode, struct lwp *l)
{
        struct cgfourteen_softc *sc;
        int oldopens;

        sc = device_lookup_private(&cgfourteen_cd, minor(dev));
        if (sc == NULL)
                return(ENXIO);
        oldopens = sc->sc_opens++;

        /* Setup the cg14 as we want it, and save the original PROM state */
        if (oldopens == 0)      /* first open only, to make screenblank work */
                cg14_init(sc);

        return (0);
}

int
cgfourteenclose(dev_t dev, int flags, int mode, struct lwp *l)
{
        struct cgfourteen_softc *sc = 
            device_lookup_private(&cgfourteen_cd, minor(dev));
        int opens;

        opens = --sc->sc_opens;
        if (sc->sc_opens < 0)
                opens = sc->sc_opens = 0;

        /*
         * Restore video state to make the PROM happy, on last close.
         */
        if (opens == 0) {
                cg14_reset(sc);
#if NSX > 0
                if (sc->sc_sx)
                        glyphcache_wipe(&sc->sc_gc);
#endif
        }
        return (0);
}

int
cgfourteenioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l)
{
        struct cgfourteen_softc *sc =
            device_lookup_private(&cgfourteen_cd, minor(dev));
        struct fbgattr *fba;
        int error;

        switch (cmd) {

        case FBIOGTYPE:
                *(struct fbtype *)data = sc->sc_fb.fb_type;
                break;

        case FBIOGATTR:
                fba = (struct fbgattr *)data;
                fba->real_type = FBTYPE_MDICOLOR;
                fba->owner = 0;         /* XXX ??? */
                fba->fbtype = sc->sc_fb.fb_type;
                fba->sattr.flags = 0;
                fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type;
                fba->sattr.dev_specific[0] = -1;
                fba->emu_types[0] = sc->sc_fb.fb_type.fb_type;
                fba->emu_types[1] = -1;
                break;

        case FBIOGETCMAP:
                return(cg14_get_cmap((struct fbcmap *)data, &sc->sc_cmap,
                                     CG14_CLUT_SIZE));

        case FBIOPUTCMAP:
                /* copy to software map */
#define p ((struct fbcmap *)data)
                error = cg14_put_cmap(p, &sc->sc_cmap, CG14_CLUT_SIZE);
                if (error)
                        return (error);
                /* now blast them into the chip */
                /* XXX should use retrace interrupt */
                if (sc->sc_depth == 8)
                        cg14_load_hwcmap(sc, p->index, p->count);
#undef p
                break;

        case FBIOGVIDEO:
                *(int *)data = cg14_get_video(sc);
                break;

        case FBIOSVIDEO:
                cg14_set_video(sc, *(int *)data);
                break;

        case CG14_SET_PIXELMODE: {
                int depth = *(int *)data;

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

                cg14_set_depth(sc, depth);
                cg14_init_cmap(sc);
                }
                break;
        default:
                return (ENOTTY);
        }
        return (0);
}

/*
 * Undo the effect of an FBIOSVIDEO that turns the video off.
 */
static void
cgfourteenunblank(device_t dev)
{
        struct cgfourteen_softc *sc = device_private(dev);

        cg14_set_video(sc, 1);
#if NWSDISPLAY > 0
        if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) {
                cg14_set_depth(sc, 8);
                cg14_init_cmap(sc);
                vcons_redraw_screen(sc->sc_vd.active);
                sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
        }
#endif  
}

/*
 * Return the address that would map the given device at the given
 * offset, allowing for the given protection, or return -1 for error.
  */
paddr_t
cgfourteenmmap(dev_t dev, off_t off, int prot)
{
        struct cgfourteen_softc *sc =
            device_lookup_private(&cgfourteen_cd, minor(dev));
        off_t offset = -1;

        if (off & PGOFSET)
                panic("cgfourteenmmap");

        if (off < 0)
                return (-1);

        if (off >= 0 && off < 0x10000) {
                offset = sc->sc_regaddr;
        } else if (off >= CG14_CURSOR_VOFF &&
                   off < (CG14_CURSOR_VOFF + 0x1000)) {
                offset = sc->sc_regaddr + CG14_OFFSET_CURS;
                off -= CG14_CURSOR_VOFF;
        } else if (off >= CG14_DIRECT_VOFF &&
                   off < (CG14_DIRECT_VOFF + sc->sc_vramsize)) {
                offset = sc->sc_fbaddr + CG14_FB_VRAM;
                off -= CG14_DIRECT_VOFF;
        } else if (off >= CG14_BGR_VOFF &&
                   off < (CG14_BGR_VOFF + sc->sc_vramsize)) {
                offset = sc->sc_fbaddr + CG14_FB_CBGR;
                off -= CG14_BGR_VOFF;
        } else if (off >= CG14_X32_VOFF &&
                   off < (CG14_X32_VOFF + (sc->sc_vramsize >> 2))) {
                offset = sc->sc_fbaddr + CG14_FB_PX32;
                off -= CG14_X32_VOFF;
        } else if (off >= CG14_B32_VOFF &&
                   off < (CG14_B32_VOFF + (sc->sc_vramsize >> 2))) {
                offset = sc->sc_fbaddr + CG14_FB_PB32;
                off -= CG14_B32_VOFF;
        } else if (off >= CG14_G32_VOFF &&
                   off < (CG14_G32_VOFF + (sc->sc_vramsize >> 2))) {
                offset = sc->sc_fbaddr + CG14_FB_PG32;
                off -= CG14_G32_VOFF;
        } else if (off >= CG14_R32_VOFF &&
                   off < CG14_R32_VOFF + (sc->sc_vramsize >> 2)) {
                offset = sc->sc_fbaddr + CG14_FB_PR32;
                off -= CG14_R32_VOFF;
#if NSX > 0
        /*
         * for convenience we also map the SX ranges here:
         * - one page userland registers
         * - CG14-sized IO space at 0x800000000 ( not a typo, it's above 4GB )
         */
        } else if (sc->sc_sx == NULL) {
                return -1;
        } else if (off >= CG14_SXREG_VOFF &&
                   off < (CG14_SXREG_VOFF + 0x400)) {
                return (bus_space_mmap(sc->sc_sx->sc_tag, sc->sc_sx->sc_uregs,
                        0, prot, BUS_SPACE_MAP_LINEAR));
        } else if (off >= CG14_SXIO_VOFF &&
                   off < (CG14_SXIO_VOFF + 0x03ffffff)) {
                off -= CG14_SXIO_VOFF;
                return (bus_space_mmap(sc->sc_sx->sc_tag, 0x800000000LL,
                        sc->sc_fb_paddr + off,
                        prot, BUS_SPACE_MAP_LINEAR));
#endif
        } else
                return -1;

        return (bus_space_mmap(sc->sc_bustag, offset, off, prot,
                    BUS_SPACE_MAP_LINEAR));
}

int
cgfourteenpoll(dev_t dev, int events, struct lwp *l)
{

        return (seltrue(dev, events, l));
}

/*
 * Miscellaneous helper functions
 */

/* Initialize the framebuffer, storing away useful state for later reset */
static void
cg14_init(struct cgfourteen_softc *sc)
{
        cg14_set_depth(sc, 32); 
        cg14_init_cmap(sc);
}

static void
/* Restore the state saved on cg14_init */
cg14_reset(struct cgfourteen_softc *sc)
{
        cg14_set_depth(sc, 8);
        cg14_init_cmap(sc);
}

/* Enable/disable video display; power down monitor if DPMS-capable */
static void
cg14_set_video(struct cgfourteen_softc *sc, int enable)
{
        /*
         * We can only use DPMS to power down the display if the chip revision
         * is greater than 0.
         */
        if (enable) {
                if ((sc->sc_ctl->ctl_rsr & CG14_RSR_REVMASK) > 0)
                        sc->sc_ctl->ctl_mctl |= (CG14_MCTL_ENABLEVID |
                                                 CG14_MCTL_POWERCTL);
                else
                        sc->sc_ctl->ctl_mctl |= CG14_MCTL_ENABLEVID;
        } else {
                if ((sc->sc_ctl->ctl_rsr & CG14_RSR_REVMASK) > 0)
                        sc->sc_ctl->ctl_mctl &= ~(CG14_MCTL_ENABLEVID |
                                                  CG14_MCTL_POWERCTL);
                else
                        sc->sc_ctl->ctl_mctl &= ~CG14_MCTL_ENABLEVID;
        }
}

/* Get status of video display */
static int
cg14_get_video(struct cgfourteen_softc *sc)
{
        return ((sc->sc_ctl->ctl_mctl & CG14_MCTL_ENABLEVID) != 0);
}

/* Read the software shadow colormap */
static int
cg14_get_cmap(struct fbcmap *p, union cg14cmap *cm, int cmsize)
{
        u_int i, start, count;
        u_char *cp;
        int error;

        start = p->index;
        count = p->count;
        if (start >= cmsize || count > cmsize - start)
                return (EINVAL);

        for (cp = &cm->cm_map[start][0], i = 0; i < count; cp += 4, i++) {
                error = copyout(&cp[3], &p->red[i], 1);
                if (error)
                        return error;
                error = copyout(&cp[2], &p->green[i], 1);
                if (error)
                        return error;
                error = copyout(&cp[1], &p->blue[i], 1);
                if (error)
                        return error;
        }
        return (0);
}

/* Write the software shadow colormap */
static int
cg14_put_cmap(struct fbcmap *p, union cg14cmap *cm, int cmsize)
{
        u_int i, start, count;
        u_char *cp;
        u_char cmap[256][4];
        int error;

        start = p->index;
        count = p->count;
        if (start >= cmsize || count > cmsize - start)
                return (EINVAL);

        memcpy(&cmap, &cm->cm_map, sizeof cmap);
        for (cp = &cmap[start][0], i = 0; i < count; cp += 4, i++) {
                error = copyin(&p->red[i], &cp[3], 1);
                if (error)
                        return error;
                error = copyin(&p->green[i], &cp[2], 1);
                if (error)
                        return error;
                error = copyin(&p->blue[i], &cp[1], 1);
                if (error)
                        return error;
                cp[0] = 0;      /* no alpha channel */
        }
        memcpy(&cm->cm_map, &cmap, sizeof cmap);
        return (0);
}

static void
cg14_load_hwcmap(struct cgfourteen_softc *sc, int start, int ncolors)
{
        /* XXX switch to auto-increment, and on retrace intr */

        /* Setup pointers to source and dest */
        uint32_t *colp = &sc->sc_cmap.cm_chip[start];
        volatile uint32_t *lutp = &sc->sc_clut1->clut_lut[start];

        /* Copy by words */
        while (--ncolors >= 0)
                *lutp++ = *colp++;
}

static void
cg14_setup_wsdisplay(struct cgfourteen_softc *sc, int is_cons)
{
        struct wsemuldisplaydev_attach_args aa;
        struct rasops_info *ri;
        long defattr;

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

        cg14_set_depth(sc, 8);

        sc->sc_screens[0] = &sc->sc_defaultscreen_descr;
        sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens};
        sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
        vcons_init(&sc->sc_vd, sc, &sc->sc_defaultscreen_descr,
            &cg14_accessops);
        sc->sc_vd.init_screen = cg14_init_screen;
        sc->sc_vd.show_screen_cookie = &sc->sc_gc;
        sc->sc_vd.show_screen_cb = glyphcache_adapt;

        ri = &sc->sc_console_screen.scr_ri;

        sc->sc_gc.gc_bitblt = cg14_bitblt_gc;
        sc->sc_gc.gc_blitcookie = sc;
        sc->sc_gc.gc_rectfill = cg14_rectfill_a;
        sc->sc_gc.gc_rop = 0xc;

        vcons_init_screen(&sc->sc_vd, &sc->sc_console_screen, 1,
            &defattr);

        /* clear the screen with the default background colour */
        if (sc->sc_sx != NULL) {
                cg14_rectfill(sc, 0, 0, ri->ri_width, ri->ri_height,
                        ri->ri_devcmap[(defattr >> 16) & 0xf]);
        } else {
                memset(sc->sc_fb.fb_pixels,
                       ri->ri_devcmap[(defattr >> 16) & 0xf],
                       ri->ri_stride * ri->ri_height);
        }
        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_align(&sc->sc_gc, sc->sc_fb.fb_type.fb_height + 5,
                (sc->sc_vramsize / sc->sc_fb.fb_type.fb_width) - 
                 sc->sc_fb.fb_type.fb_height - 5,
                sc->sc_fb.fb_type.fb_width,
                ri->ri_font->fontwidth,
                ri->ri_font->fontheight,
                defattr, 4);

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

        aa.console = is_cons;
        aa.scrdata = &sc->sc_screenlist;
        aa.accessops = &cg14_accessops;
        aa.accesscookie = &sc->sc_vd;

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

        /*
         * do this here since any output through firmware calls will mess
         * with XLUT settings
         */
        cg14_init_cmap(sc);
}

static void
cg14_init_cmap(struct cgfourteen_softc *sc)
{
        struct rasops_info *ri = &sc->sc_console_screen.scr_ri;
        int i, j = 0;
        uint32_t r, g, b, c, cc;
        uint8_t cmap[768];

        if (sc->sc_depth == 16) {
                /* construct an R5G6B5 palette in CLUT1/2 */
                for (i = 0; i < 0x100; i++) {
                        /* upper byte first */
                        r = (i & 0xf8); /* red component */
                        r |= r >> 5;            /* fill lower bits so 0xf8 */
                        c = 0x40000000 | r;     /* becomes 0xff */
                        g = i & 0x7;            /* upper 3 bits of green */
                        g |= g << 3;            /* 0x003f */
                        c |= ((g << 10) & 0xf000);      /* make it 4 */
                        sc->sc_clut1->clut_lut[i] = c;
                        /* lower byte */
                        g = i & 0xe0;           /* lower half of green */
                        g |= g >> 3;
                        cc = 0x40000000 | ((g << 4) & 0x0f00);
                        b = i & 0x1f;           /* and blue */
                        b = (b << 3) | (b >> 2);
                        cc |= (b << 16); 
                        sc->sc_clut2->clut_lut[i] = cc;
                }

                /*
                 * because we alpha blend our components everything is half
                 * intensity, fix that with the gamma LUT
                 */

                sc->sc_dac->dac_mode &= ~6;     /* 8bit mode, for simlicity */
                for (i = 0; i < 128; i++) {
                        sc->sc_dac->dac_addr = i;
                        sc->sc_dac->dac_gammalut = i << 1;
                        sc->sc_dac->dac_gammalut = i << 1;
                        sc->sc_dac->dac_gammalut = i << 1;
                }

                /* finally fill the XLUT */
                for (i = 0; i < 256; i++)
                     sc->sc_xlut->xlut_lut[i] = 
                         CG14_LEFT_CLUT2 | CG14_LEFT_B |
                         CG14_RIGHT_CLUT1 | CG14_RIGHT_X;
        } else {
                /* in 8 or 24bit put a linear ramp in the gamma LUT */
                sc->sc_dac->dac_mode &= ~6;     /* 8bit mode, for simlicity */
                for (i = 0; i < 256; i++) {
                        sc->sc_dac->dac_addr = i;
                        sc->sc_dac->dac_gammalut = i;
                        sc->sc_dac->dac_gammalut = i;
                        sc->sc_dac->dac_gammalut = i;
                }

                /* and zero the XLUT */
                for (i = 0; i < 256; i++)
                     sc->sc_xlut->xlut_lut[i] = 0;

                if (sc->sc_depth == 8) {
                        rasops_get_cmap(ri, cmap, sizeof(cmap));

                        for (i = 0; i < 256; i++) {
                                sc->sc_cmap.cm_map[i][3] = cmap[j];
                                sc->sc_cmap.cm_map[i][2] = cmap[j + 1];
                                sc->sc_cmap.cm_map[i][1] = cmap[j + 2];
                                j += 3;
                        }
                        cg14_load_hwcmap(sc, 0, 256);
                }
        }
}

static int
cg14_putcmap(struct cgfourteen_softc *sc, struct wsdisplay_cmap *cm)
{
        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;

        for (i = 0; i < count; i++) {
                sc->sc_cmap.cm_map[index][3] = rbuf[index];
                sc->sc_cmap.cm_map[index][2] = gbuf[index];
                sc->sc_cmap.cm_map[index][1] = bbuf[index];
                index++;
        }

        if (sc->sc_depth == 8)
                cg14_load_hwcmap(sc, 0, 256);

        return 0;
}

static int
cg14_getcmap(struct cgfourteen_softc *sc, struct wsdisplay_cmap *cm)
{
        uint8_t rbuf[256], gbuf[256], bbuf[256];
        u_int index = cm->index;
        u_int count = cm->count;
        int error, i;

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


        for (i = 0; i < count; i++) {
                rbuf[i] = sc->sc_cmap.cm_map[index][3];
                gbuf[i] = sc->sc_cmap.cm_map[index][2];
                bbuf[i] = sc->sc_cmap.cm_map[index][1];
                index++;
        }
        error = copyout(rbuf,   cm->red,   count);
        if (error)
                return error;
        error = copyout(gbuf, cm->green, count);
        if (error)
                return error;
        error = copyout(bbuf,  cm->blue,  count);
        if (error)
                return error;

        return 0;
}

static int
cg14_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
        struct lwp *l)
{
        struct vcons_data *vd = v;
        struct cgfourteen_softc *sc = vd->cookie;
        struct wsdisplay_fbinfo *wdf;
        struct vcons_screen *ms = vd->active;

        switch (cmd) {

                case WSDISPLAYIO_GTYPE:
                        *(uint32_t *)data = WSDISPLAY_TYPE_SUNCG14;
                        return 0;

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

                case WSDISPLAYIO_GETCMAP:
                        return cg14_getcmap(sc,
                            (struct wsdisplay_cmap *)data);

                case WSDISPLAYIO_PUTCMAP:
                        return cg14_putcmap(sc,
                            (struct wsdisplay_cmap *)data);

                case WSDISPLAYIO_LINEBYTES:
                        *(u_int *)data = ms->scr_ri.ri_stride * (sc->sc_fbdepth >> 3);
                        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) {
                                                bus_space_write_1(sc->sc_bustag,
                                                    sc->sc_regh,
                                                    CG14_CURSOR_CONTROL, 0);

                                                cg14_set_depth(sc, 8);
                                                cg14_init_cmap(sc);
#if NSX > 0
                                                if (sc->sc_sx)
                                                        glyphcache_wipe(&sc->sc_gc);
#endif
                                                vcons_redraw_screen(ms);
                                        } else {

                                                cg14_set_depth(sc, sc->sc_fbdepth);
                                                cg14_init_cmap(sc);
                                        }
                                }
                        }
                        return 0;
                case WSDISPLAYIO_SVIDEO:
                        cg14_set_video(sc, *(int *)data);
                        return 0;
                case WSDISPLAYIO_GVIDEO:
                        *(int *)data = cg14_get_video(sc) ? 
                            WSDISPLAYIO_VIDEO_ON : WSDISPLAYIO_VIDEO_OFF;
                        return 0;
                case WSDISPLAYIO_GCURPOS:
                        {
                                struct wsdisplay_curpos *cp = (void *)data;

                                cp->x = sc->sc_cursor.cc_pos.x;
                                cp->y = sc->sc_cursor.cc_pos.y;
                        }
                        return 0;
                case WSDISPLAYIO_SCURPOS:
                        {
                                struct wsdisplay_curpos *cp = (void *)data;

                                cg14_move_cursor(sc, cp->x, cp->y);
                        }
                        return 0;
                case WSDISPLAYIO_GCURMAX:
                        {
                                struct wsdisplay_curpos *cp = (void *)data;

                                cp->x = 32;
                                cp->y = 32;
                        }
                        return 0;
                case WSDISPLAYIO_SCURSOR:
                        {
                                struct wsdisplay_cursor *cursor = (void *)data;

                                return cg14_do_cursor(sc, cursor);
                        }
                case PCI_IOC_CFGREAD:
                case PCI_IOC_CFGWRITE:
                        return EINVAL;
                case WSDISPLAYIO_SET_DEPTH:
                {
                        int new_depth = *(int*)data;

                        if ((new_depth == 8) || (new_depth == 32)) {
                                sc->sc_fbdepth = new_depth;
                                return 0;
                        }
                        return EINVAL;
                }
                case WSDISPLAYIO_GET_FBINFO:
                {
                        struct wsdisplayio_fbinfo *fbi = data;

                        if (sc->sc_depth == 8) {
                                fbi->fbi_stride = sc->sc_fb.fb_type.fb_width;
                                fbi->fbi_bitsperpixel = 8;
                                fbi->fbi_pixeltype = WSFB_CI;
                        } else {
                                fbi->fbi_stride = sc->sc_fb.fb_type.fb_width * 4;
                                fbi->fbi_bitsperpixel = 32;
                                fbi->fbi_pixeltype = WSFB_RGB;
                        }
                        fbi->fbi_fbsize = sc->sc_vramsize;
                        fbi->fbi_width = sc->sc_fb.fb_type.fb_width;
                        fbi->fbi_height = sc->sc_fb.fb_type.fb_height;
                        fbi->fbi_subtype.fbi_rgbmasks.red_offset = 0;
                        fbi->fbi_subtype.fbi_rgbmasks.red_size = 8;
                        fbi->fbi_subtype.fbi_rgbmasks.green_offset = 8;
                        fbi->fbi_subtype.fbi_rgbmasks.green_size = 8;
                        fbi->fbi_subtype.fbi_rgbmasks.blue_offset = 16;
                        fbi->fbi_subtype.fbi_rgbmasks.blue_size = 8;
                        fbi->fbi_subtype.fbi_rgbmasks.alpha_offset = 0;
                        fbi->fbi_subtype.fbi_rgbmasks.alpha_size = 0;
                        return 0;
                }

        }
        return EPASSTHROUGH;
}

static paddr_t
cg14_mmap(void *v, void *vs, off_t offset, int prot)
{
        struct vcons_data *vd = v;
        struct cgfourteen_softc *sc = vd->cookie;
        uint32_t space;

        space = sc->sc_fbdepth == 32 ? CG14_FB_CBGR : CG14_FB_VRAM;
        /* allow mmap()ing the full framebuffer, not just what we use */
        if (offset < sc->sc_vramsize)
                return bus_space_mmap(sc->sc_bustag,
                    BUS_ADDR(sc->sc_physadr[CG14_PXL_IDX].sbr_slot,
                      sc->sc_physadr[CG14_PXL_IDX].sbr_offset),
                    offset + space, prot, BUS_SPACE_MAP_LINEAR);

        return -1;
}

static void
cg14_init_screen(void *cookie, struct vcons_screen *scr,
    int existing, long *defattr)
{
        struct cgfourteen_softc *sc = cookie;
        struct rasops_info *ri = &scr->scr_ri;

        ri->ri_depth = sc->sc_depth;
        ri->ri_width = sc->sc_fb.fb_type.fb_width;
        ri->ri_height = sc->sc_fb.fb_type.fb_height;
        ri->ri_stride = ri->ri_width * (sc->sc_depth >> 3);
        ri->ri_flg = RI_CENTER | RI_FULLCLEAR;

        ri->ri_bits = (char *)sc->sc_fb.fb_pixels;

        scr->scr_flags |= VCONS_LOADFONT;
#if NSX > 0
        ri->ri_flg |= RI_8BIT_IS_RGB | RI_ENABLE_ALPHA | RI_PREFER_ALPHA;

        /*
         * unaligned copies with horizontal overlap are slow, so don't bother
         * handling them in cg14_bitblt() and use putchar() instead
         */
        if (sc->sc_sx != NULL) {
                scr->scr_flags |= VCONS_NO_COPYCOLS;
        } else
#endif
                scr->scr_flags |= VCONS_DONT_READ;

        if (existing) {
                ri->ri_flg |= RI_CLEAR;
        }

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

        rasops_reconfig(ri,
            sc->sc_fb.fb_type.fb_height / ri->ri_font->fontheight,
            sc->sc_fb.fb_type.fb_width / ri->ri_font->fontwidth);

        ri->ri_hw = scr;
#if NSX > 0
        if ((sc->sc_sx != NULL) && (sc->sc_depth == 8)) {
                ri->ri_ops.copyrows = cg14_copyrows;
                ri->ri_ops.copycols = cg14_copycols;
                ri->ri_ops.eraserows = cg14_eraserows;
                ri->ri_ops.erasecols = cg14_erasecols;
                ri->ri_ops.cursor = cg14_cursor;
                if (FONT_IS_ALPHA(ri->ri_font)) {
                        ri->ri_ops.putchar = cg14_putchar_aa;
                } else
                        ri->ri_ops.putchar = cg14_putchar;
        }
#endif /* NSX > 0 */
}

static void
cg14_set_depth(struct cgfourteen_softc *sc, int depth)
{

        /* init mask */
        if (sc->sc_sx != NULL) {
                sc->sc_mask = 0xffffffff;
                sx_write(sc->sc_sx, SX_QUEUED(R_MASK), sc->sc_mask);
        }

        if (sc->sc_depth == depth)
                return;

        switch (depth) {
                case 8:
                        bus_space_write_1(sc->sc_bustag, sc->sc_regh,
                            CG14_MCTL, CG14_MCTL_ENABLEVID | 
                            CG14_MCTL_PIXMODE_8 | CG14_MCTL_POWERCTL);
                        sc->sc_depth = 8;
                        break;
                case 16:
                        bus_space_write_1(sc->sc_bustag, sc->sc_regh,
                            CG14_MCTL, CG14_MCTL_ENABLEVID | 
                            CG14_MCTL_PIXMODE_16 | CG14_MCTL_POWERCTL);
                        sc->sc_depth = 16;
                        break;
                case 32:
                        bus_space_write_1(sc->sc_bustag, sc->sc_regh,
                            CG14_MCTL, CG14_MCTL_ENABLEVID | 
                            CG14_MCTL_PIXMODE_32 | CG14_MCTL_POWERCTL);
                        sc->sc_depth = 32;
                        break;
                default:
                        printf("%s: can't change to depth %d\n",
                            device_xname(sc->sc_dev), depth);
                        return;
        }

}

static void
cg14_move_cursor(struct cgfourteen_softc *sc, int x, int y)
{
        uint32_t pos;

        sc->sc_cursor.cc_pos.x = x;
        sc->sc_cursor.cc_pos.y = y;
        pos = ((sc->sc_cursor.cc_pos.x - sc->sc_cursor.cc_hot.x ) << 16) |
              ((sc->sc_cursor.cc_pos.y - sc->sc_cursor.cc_hot.y ) & 0xffff);
        bus_space_write_4(sc->sc_bustag, sc->sc_regh, CG14_CURSOR_X, pos);
}

static int
cg14_do_cursor(struct cgfourteen_softc *sc, struct wsdisplay_cursor *cur)
{
        if (cur->which & WSDISPLAY_CURSOR_DOCUR) {

                bus_space_write_1(sc->sc_bustag, sc->sc_regh,
                    CG14_CURSOR_CONTROL, cur->enable ? CG14_CRSR_ENABLE : 0);
        }
        if (cur->which & WSDISPLAY_CURSOR_DOHOT) {

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

                cg14_move_cursor(sc, cur->pos.x, cur->pos.y);
        }
        if (cur->which & WSDISPLAY_CURSOR_DOCMAP) {
                int i;
                uint32_t val;

                if ((cur->cmap.index > 2) || (cur->cmap.count > 3) ||
                    (cur->cmap.index + cur->cmap.count > 3))
                        return EINVAL;

                for (i = 0; i < uimin(cur->cmap.count, 3); i++) {
                        val = (cur->cmap.red[i] ) |
                              (cur->cmap.green[i] << 8) |
                              (cur->cmap.blue[i] << 16);
                        bus_space_write_4(sc->sc_bustag, sc->sc_regh,
                            CG14_CURSOR_COLOR1 + ((i + cur->cmap.index) << 2),
                            val);
                }
        }
        if (cur->which & WSDISPLAY_CURSOR_DOSHAPE) {
                uint32_t buffer[32], latch, tmp;
                int i;

                copyin(cur->mask, buffer, 128);
                for (i = 0; i < 32; i++) {
                        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;
                        bus_space_write_4(sc->sc_bustag, sc->sc_regh,
                            CG14_CURSOR_PLANE0 + (i << 2), latch);
                }
                copyin(cur->image, buffer, 128);
                for (i = 0; i < 32; i++) {
                        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;
                        bus_space_write_4(sc->sc_bustag, sc->sc_regh,
                            CG14_CURSOR_PLANE1 + (i << 2), latch);
                }
        }
        return 0;
}

#if NSX > 0

static void
cg14_wait_idle(struct cgfourteen_softc *sc)
{
}

static void
cg14_rectfill(struct cgfourteen_softc *sc, int x, int y, int wi, int he,
     uint32_t colour)
{
        uint32_t addr, pptr;
        int line, cnt, pre, words;
        int stride = sc->sc_fb.fb_type.fb_width;

        addr = sc->sc_fb_paddr + x + stride * y;
        sx_write(sc->sc_sx, SX_QUEUED(8), colour);
        sx_write(sc->sc_sx, SX_QUEUED(9), colour);
        /*
         * Calculate the number of pixels we need to do one by one
         * until we're 32bit aligned, then do the rest in 32bit
         * mode. Assumes that stride is always a multiple of 4. 
         */ 
        /* TODO: use 32bit writes with byte mask instead */
        pre = addr & 3;
        if (pre != 0) pre = 4 - pre;
        for (line = 0; line < he; line++) {
                pptr = addr;
                cnt = wi;
                if (pre) {
                        sxm(SX_STBS, pptr, 8, pre - 1);
                        pptr += pre;
                        cnt -= pre;
                }
                /* now do the aligned pixels in 32bit chunks */
                while(cnt > 3) {
                        words = uimin(32, cnt >> 2);
                        sxm(SX_STS, pptr, 8, words - 1);
                        pptr += words << 2;
                        cnt -= words << 2;
                }
                /* do any remaining pixels byte-wise again */
                if (cnt > 0)
                        sxm(SX_STBS, pptr, 8, cnt - 1);
                addr += stride;
        }
}

static void
cg14_rectfill_a(void *cookie, int dstx, int dsty,
    int width, int height, long attr)
{
        struct cgfourteen_softc *sc = cookie;

        cg14_rectfill(sc, dstx, dsty, width, height,
            sc->sc_vd.active->scr_ri.ri_devcmap[(attr >> 24 & 0xf)]);
}

static inline void
cg14_set_mask(struct cgfourteen_softc *sc, uint32_t mask)
{
        if (mask == sc->sc_mask) return;
        sc->sc_mask = mask;
        sx_write(sc->sc_sx, SX_QUEUED(R_MASK), mask);
}
/*
 * invert a rectangle, used only to (un)draw the cursor.
 * - does a scanline at a time
 * - does not handle wi > 64 or wi < 4, not that we need it for our fonts
 * - uses all 32bit accesses
 */ 
static void
cg14_invert(struct cgfourteen_softc *sc, int x, int y, int wi, int he)
{
        uint32_t addr, pptr, lmask, rmask;
        int line, cnt, pre, words, pwrds = 0, post, reg;
        int stride = sc->sc_fb.fb_type.fb_width;

        addr = (sc->sc_fb_paddr + x + stride * y) & ~3;
        sx_write(sc->sc_sx, SX_ROP_CONTROL, 0x3C); /* ~src a / src a */
        /*
         * Calculate the number of pixels we need to mask on each end of the
         * scanline and how many we can do without mask, if any
         */
        pre = x & 3;
        if (pre != 0) {
                lmask = 0xffffffff >> pre;
                pre = 4 - pre;
                pwrds++;
        }
        post = (x + wi) & 3;
        if (post != 0) {
                rmask = ~(0xffffffff >> post);
                pwrds++;
        }
        words = (wi + pre + 3) >> 2;
        cnt = words - pwrds;

        for (line = 0; line < he; line++) {
                pptr = addr;
                /* load a whole scanline */
                sxm(SX_LD, pptr, 8, words - 1);
                reg = 8;
                if (pre) {
                        cg14_set_mask(sc, lmask);
                        sxi(SX_ROPB, 8, 8, 40, 0);
                        reg++;
                }
                if (cnt > 0) {
                        cg14_set_mask(sc, 0xffffffff);
                        /* XXX handle cnt > 16 */
                        sxi(SX_ROP, reg, reg, reg + 32, cnt - 1);
                        reg += cnt;
                }
                if (post) {
                        cg14_set_mask(sc, rmask);
                        sxi(SX_ROPB, reg, 7, reg + 32, 0);
                        reg++;
                }
                sxm(SX_ST, pptr, 40, words - 1);
                addr += stride;
        }
}

static inline void
cg14_slurp(int reg, uint32_t addr, int cnt)
{
        int num;
        while (cnt > 0) {
                num = uimin(32, cnt);
                sxm(SX_LD, addr, reg, num - 1);
                cnt -= num;
                reg += num;
                addr += (num << 2);
        }
}

static inline void
cg14_spit(int reg, uint32_t addr, int cnt)
{
        int num;
        while (cnt > 0) {
                num = uimin(32, cnt);
                sxm(SX_ST, addr, reg, num - 1);
                cnt -= num;
                reg += num;
                addr += (num << 2);
        }
}

static void
cg14_bitblt(void *cookie, int xs, int ys, int xd, int yd,
    int wi, int he, int rop)
{
        struct cgfourteen_softc *sc = cookie;
        uint32_t saddr, daddr, sptr, dptr;
        int line, cnt, stride = sc->sc_fb.fb_type.fb_width;
        int num, words, skip;

        if (ys < yd) {
                /* need to go bottom-up */
                saddr = sc->sc_fb_paddr + xs + stride * (ys + he - 1);
                daddr = sc->sc_fb_paddr + xd + stride * (yd + he - 1);
                skip = -stride;
        } else {
                saddr = sc->sc_fb_paddr + xs + stride * ys;
                daddr = sc->sc_fb_paddr + xd + stride * yd;
                skip = stride;
        }

        if ((saddr & 3) == (daddr & 3)) {
                int pre = saddr & 3;    /* pixels to copy byte-wise */
                if (pre != 0) pre = 4 - pre;
                for (line = 0; line < he; line++) {
                        sptr = saddr;
                        dptr = daddr;
                        cnt = wi;
                        if (pre > 0) {
                                sxm(SX_LDB, sptr, 32, pre - 1);
                                sxm(SX_STB, dptr, 32, pre - 1);
                                cnt -= pre;
                                sptr += pre;
                                dptr += pre;
                        }
                        words = cnt >> 2;
                        while(cnt > 3) {
                                num = uimin(120, words);
                                cg14_slurp(8, sptr, num);
                                cg14_spit(8, dptr, num);
                                sptr += num << 2;
                                dptr += num << 2;
                                cnt -= num << 2;
                        }
                        if (cnt > 0) {
                                sxm(SX_LDB, sptr, 32, cnt - 1);
                                sxm(SX_STB, dptr, 32, cnt - 1);
                        }
                        saddr += skip;
                        daddr += skip;
                }
        } else {
                /* unaligned, have to use byte mode */
                /* funnel shifter & byte mask trickery? */
                for (line = 0; line < he; line++) {
                        sptr = saddr;
                        dptr = daddr;
                        cnt = wi;
                        while(cnt > 31) {
                                sxm(SX_LDB, sptr, 32, 31);
                                sxm(SX_STB, dptr, 32, 31);
                                sptr += 32;
                                dptr += 32;
                                cnt -= 32;
                        }
                        if (cnt > 0) {
                                sxm(SX_LDB, sptr, 32, cnt - 1);
                                sxm(SX_STB, dptr, 32, cnt - 1);
                        }
                        saddr += skip;
                        daddr += skip;
                }
        }
}

/*
 * for copying glyphs around
 * - uses all quads for reads
 * - uses quads for writes as far as possible
 * - limited by number of registers - won't do more than 120 wide
 * - doesn't handle overlaps
 */
static void
cg14_bitblt_gc(void *cookie, int xs, int ys, int xd, int yd,
    int wi, int he, int rop)
{
        struct cgfourteen_softc *sc = cookie;
        uint32_t saddr, daddr;
        int line, cnt = wi, stride = sc->sc_fb.fb_type.fb_width;
        int dreg = 8, swi = wi, dd;
        int in = 0, q = 0, out = 0, r;

        saddr = sc->sc_fb_paddr + xs + stride * ys;
        daddr = sc->sc_fb_paddr + xd + stride * yd;

        if (saddr & 3) {
                swi += saddr & 3;
                dreg += saddr & 3;
                saddr &= ~3;
        }
        swi = (swi + 3) >> 2;   /* round up, number of quads to read */

        if (daddr & 3) {
                in = 4 - (daddr & 3); /* pixels to write in byte mode */
                cnt -= in;
        }

        q = cnt >> 2;
        out = cnt & 3;

        for (line = 0; line < he; line++) {
                /* read source line, in all quads */
                sxm(SX_LDUQ0, saddr, 8, swi - 1);
                /* now write it out */
                dd = daddr;
                r = dreg;
                if (in > 0) {
                        sxm(SX_STB, dd, r, in - 1);
                        dd += in;
                        r += in;
                }
                if (q > 0) {
                        sxm(SX_STUQ0, dd, r, q - 1);
                        r += q << 2;
                        dd += q << 2;
                }
                if (out > 0) {
                        sxm(SX_STB, dd, r, out - 1);
                }
                saddr += stride;
                daddr += stride;
        }
}

static void
cg14_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 cgfourteen_softc *sc = scr->scr_cookie;
        void *data;
        uint32_t fg, bg;
        int i, x, y, wi, he;
        uint32_t addr;
        int stride = sc->sc_fb.fb_type.fb_width;

        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;

        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) {
                cg14_rectfill(sc, x, y, wi, he, bg);
                if (attr & 1)
                        cg14_rectfill(sc, x, y + he - 2, wi, 1, fg);
                return;
        }

        sx_write(sc->sc_sx, SX_QUEUED(8), bg);
        sx_write(sc->sc_sx, SX_QUEUED(9), fg);

        data = WSFONT_GLYPH(c, font);
        addr = sc->sc_fb_paddr + x + stride * y;

        switch (font->stride) {
                case 1: {
                        uint8_t *data8 = data;
                        uint32_t reg;
                        for (i = 0; i < he; i++) {
                                reg = *data8;
                                cg14_set_mask(sc, reg << 24);
                                sxm(SX_STBS, addr, 8, wi - 1);
                                data8++;
                                addr += stride;
                        }
                        break;
                }
                case 2: {
                        uint16_t *data16 = data;
                        uint32_t reg;
                        for (i = 0; i < he; i++) {
                                reg = *data16;
                                cg14_set_mask(sc, reg << 16);
                                sxm(SX_STBS, addr, 8, wi - 1);
                                data16++;
                                addr += stride;
                        }
                        break;
                }
        }
        if (attr & 1)
                cg14_rectfill(sc, x, y + he - 2, wi, 1, fg);
}

static void
cg14_nuke_cursor(struct rasops_info *ri)
{
        struct vcons_screen *scr = ri->ri_hw;
        struct cgfourteen_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;
                cg14_invert(sc, x, y, wi, he);
                ri->ri_flg &= ~RI_CURSOR;
        }
}

static void
cg14_cursor(void *cookie, int on, int row, int col)
{
        struct rasops_info *ri = cookie;
        struct vcons_screen *scr = ri->ri_hw;
        struct cgfourteen_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) {
                                cg14_nuke_cursor(ri);
                        }
                        x = col * wi + ri->ri_xorigin;
                        y = row * he + ri->ri_yorigin;
                        cg14_invert(sc, x, y, wi, he);
                        ri->ri_flg |= RI_CURSOR;
                }
                ri->ri_crow = row;
                ri->ri_ccol = col;
        } else {
                scr->scr_ri.ri_crow = row;
                scr->scr_ri.ri_ccol = col;
                scr->scr_ri.ri_flg &= ~RI_CURSOR;
        }

}

static void
cg14_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 cgfourteen_softc *sc = scr->scr_cookie;
        int stride = sc->sc_fb.fb_type.fb_width;
        uint32_t bg, fg, addr, bg8, fg8, pixel, in, q, next;
        int i, j, x, y, wi, he, r, g, b, aval, cnt, reg;
        int r1, g1, b1, r0, g0, b0, fgo, bgo, rv;
        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;

        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) {
                cg14_rectfill(sc, x, y, wi, he, bg);
                if (attr & 1)
                        cg14_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;

        addr = sc->sc_fb_paddr + x + stride * y;
        data8 = WSFONT_GLYPH(c, font);

        /*
         * 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);

        for (i = 0; i < he; i++) {
                /* calculate one line of pixels */
                for (j = 0; j < wi; j++) {
                        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);
                        }
                        /*
                         * stick them into SX registers and hope we never have
                         * to deal with fonts more than 120 pixels wide
                         */
                        sx_write(sc->sc_sx, SX_QUEUED(j + 8), pixel);
                        data8++;
                }
                /* now write them into video memory */
                in = (addr & 3);
                next = addr;
                reg = 8;
                cnt = wi;
                if (in != 0) {
                        in = 4 - in;    /* pixels to write until aligned */
                        sxm(SX_STB, next, 8, in - 1);
                        next += in;
                        reg = 8 + in;
                        cnt -= in;
                }
                q = cnt >> 2;   /* number of writes we can do in quads */
                if (q > 0) {
                        sxm(SX_STUQ0, next, reg, q - 1);
                        next += (q << 2);
                        cnt -= (q << 2);
                        reg += (q << 2);
                }
                if (cnt > 0) {
                        sxm(SX_STB, next, reg, cnt - 1);
                }
                        
                addr += stride;
        }

        if (rv == GC_ADD) {
                glyphcache_add(&sc->sc_gc, c, x, y);
        } else if (attr & 1)
                cg14_rectfill(sc, x, y + he - 2, wi, 1, fg);

}

static void
cg14_copycols(void *cookie, int row, int srccol, int dstcol, int ncols)
{
        struct rasops_info *ri = cookie;
        struct vcons_screen *scr = ri->ri_hw;
        struct cgfourteen_softc *sc = scr->scr_cookie;
        int32_t xs, xd, y, width, height;
        
        if (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)) {
                        cg14_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;
                cg14_bitblt(sc, xs, y, xd, y, width, height, 0x0c);
                if (ri->ri_crow == row && 
                   (ri->ri_ccol >= dstcol && ri->ri_ccol < (dstcol + ncols)))
                        ri->ri_flg &= ~RI_CURSOR;
        }
}

static void
cg14_erasecols(void *cookie, int row, int startcol, int ncols, long fillattr)
{
        struct rasops_info *ri = cookie;
        struct vcons_screen *scr = ri->ri_hw;
        struct cgfourteen_softc *sc = scr->scr_cookie;
        int32_t x, y, width, height, fg, bg, ul;
        
        if (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);
                cg14_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
cg14_copyrows(void *cookie, int srcrow, int dstrow, int nrows)
{
        struct rasops_info *ri = cookie;
        struct vcons_screen *scr = ri->ri_hw;
        struct cgfourteen_softc *sc = scr->scr_cookie;
        int32_t x, ys, yd, width, height;

        if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) {
                if ((ri->ri_crow >= srcrow && ri->ri_crow < (srcrow + nrows)) &&
                   (ri->ri_flg & RI_CURSOR)) {
                        cg14_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;
                cg14_bitblt(sc, x, ys, x, yd, width, height, 0x0c);
                if (ri->ri_crow >= dstrow && ri->ri_crow < (dstrow + nrows))
                        ri->ri_flg &= ~RI_CURSOR;
        }
}

static void
cg14_eraserows(void *cookie, int row, int nrows, long fillattr)
{
        struct rasops_info *ri = cookie;
        struct vcons_screen *scr = ri->ri_hw;
        struct cgfourteen_softc *sc = scr->scr_cookie;
        int32_t x, y, width, height, fg, bg, ul;
        
        if (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);
                cg14_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;
        }
}

#endif /* NSX > 0 */