/*      $OpenBSD: wscons_machdep.c,v 1.13 2016/10/09 11:25:39 tom Exp $ */

/*
 * Copyright (c) 2010 Miodrag Vallat.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
/*
 * Copyright (c) 2001 Aaron Campbell
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES 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 MIND, 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.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/extent.h>

#include <machine/autoconf.h>
#include <machine/bus.h>

#include <dev/cons.h>

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

#include "wsdisplay.h"
#if NWSDISPLAY > 0
#include <dev/wscons/wsdisplayvar.h>
#endif
#include "radeonfb.h"
extern int radeonfb_cnattach(bus_space_tag_t, bus_space_tag_t, pcitag_t, pcireg_t);
#include "sisfb.h"
extern int sisfb_cnattach(bus_space_tag_t, bus_space_tag_t, pcitag_t, pcireg_t);
#include "smfb.h"
extern int smfb_cnattach(bus_space_tag_t, bus_space_tag_t, pcitag_t, pcireg_t);
#include "vga.h"

#include "pckbc.h"
#if NPCKBC > 0
#include <dev/isa/isareg.h>
#include <dev/ic/i8042reg.h>
#include <dev/ic/pckbcvar.h>
#endif
#include "pckbd.h"
#include "ukbd.h"
#if NUKBD > 0
#include <dev/usb/ukbdvar.h>
#endif
#if NPCKBD > 0 || NUKBD > 0
#include <dev/wscons/wskbdvar.h>
#endif

cons_decl(ws);

#include <machine/pmon.h>

void
wscnprobe(struct consdev *cp)
{
        pcitag_t tag;
        pcireg_t id, class;
        int maj, dev, bus, maxbus;

        cp->cn_pri = CN_DEAD;

        /* Locate the major number. */
        for (maj = 0; maj < nchrdev; maj++) {
                if (cdevsw[maj].d_open == wsdisplayopen)
                        break;
        }

        if (maj == nchrdev) {
                /* We are not in cdevsw[], give up. */
                return;
        }

        /*
         * Loongson 3A systems have their video board on the second bus.
         *
         * XXX We might need a pci_maxdevs_early() routine if more systems
         * XXX end up needing more than one bus to be walked.
         */
        if (loongson_ver >= 0x3a)
                maxbus = 2;
        else
                maxbus = 1;

        /*
         * Look for a suitable video device.
         */

        for (bus = 0; bus < maxbus; bus++) {
                for (dev = 0; dev < 32; dev++) {
                        tag = pci_make_tag_early(bus, dev, 0);
                        id = pci_conf_read_early(tag, PCI_ID_REG);
                        if (id == 0 || PCI_VENDOR(id) == PCI_VENDOR_INVALID)
                                continue;

                        class = pci_conf_read_early(tag, PCI_CLASS_REG);
                        if (!DEVICE_IS_VGA_PCI(class) &&
                            !(PCI_CLASS(class) == PCI_CLASS_DISPLAY &&
                              PCI_SUBCLASS(class) == PCI_SUBCLASS_DISPLAY_MISC))
                                continue;

                        cp->cn_dev = makedev(maj, 0);
                        cp->cn_pri = CN_MIDPRI;
                        return;
                }
        }
}

void
wscninit(struct consdev *cp)
{
static  int initted;
        pcitag_t tag;
        pcireg_t id, class;
        int dev, bus, maxbus, rc;
        extern struct consdev pmoncons;

        if (initted)
                return;

        initted = 1;

        cn_tab = &pmoncons;     /* to be able to panic */

        /*
         * Loongson 3A systems have their video board on the second bus.
         *
         * XXX We might need a pci_maxdevs_early() routine if more systems
         * XXX end up needing more than one bus to be walked.
         */
        if (loongson_ver >= 0x3a)
                maxbus = 2;
        else
                maxbus = 1;

        /*
         * Look for a suitable video device.
         */

        for (bus = 0; bus < maxbus; bus++) {
                for (dev = 0; dev < 32; dev++) {
                        tag = pci_make_tag_early(bus, dev, 0);
                        id = pci_conf_read_early(tag, PCI_ID_REG);
                        if (id == 0 || PCI_VENDOR(id) == PCI_VENDOR_INVALID)
                                continue;

                        class = pci_conf_read_early(tag, PCI_CLASS_REG);
                        if (!DEVICE_IS_VGA_PCI(class) &&
                            !(PCI_CLASS(class) == PCI_CLASS_DISPLAY &&
                              PCI_SUBCLASS(class) == PCI_SUBCLASS_DISPLAY_MISC))
                                continue;

                        /*
                         * Try to configure this device as glass console.
                         */

                        rc = ENXIO;

                        /*
                         * Bitmapped frame buffer won't be of PREHISTORIC
                         * class.
                         */
                        if (PCI_CLASS(class) == PCI_CLASS_DISPLAY) {
#if NRADEONFB > 0
                                if (rc != 0)
                                        rc = radeonfb_cnattach(early_mem_t,
                                            early_io_t, tag, id);
#endif
#if NSISFB > 0
                                if (rc != 0 && early_io_t != NULL)
                                        rc = sisfb_cnattach(early_mem_t,
                                            early_io_t, tag, id);
#endif
#if NSMFB > 0
                                if (rc != 0 && early_io_t != NULL)
                                        rc = smfb_cnattach(early_mem_t,
                                            early_io_t, tag, id);
#endif
                        }
#if NVGA > 0
                        if (rc != 0 && early_io_t != NULL) {
                                /* thanks $DEITY the pci_chipset_tag_t arg is ignored */
                                rc = vga_pci_cnattach(early_io_t,
                                    early_mem_t, NULL, 0, dev, 0);
                        }
#endif
                        if (rc == 0)
                                goto setup_kbd;
                }
        }

        cn_tab = cp;

        /* no glass console... */
        return;

setup_kbd:

        /*
         * Look for a suitable input device.
         */

        rc = ENXIO;

#if NPCKBC > 0
        if (rc != 0 && early_io_t != NULL)
                rc = pckbc_cnattach(early_io_t, IO_KBD, KBCMDP, 0);
#endif
#if NUKBD > 0
        if (rc != 0)
                rc = ukbd_cnattach();
#endif

        cn_tab = cp;
}

void
wscnputc(dev_t dev, int i)
{
#if NWSDISPLAY > 0
        wsdisplay_cnputc(dev, i);
#endif
}

int
wscngetc(dev_t dev)
{
#if NPCKBD > 0 || NUKBD > 0
        int c;

        wskbd_cnpollc(dev, 1);
        c = wskbd_cngetc(dev);
        wskbd_cnpollc(dev, 0);

        return c;
#else
        for (;;)
                continue;
        /* NOTREACHED */
#endif
}

void
wscnpollc(dev_t dev, int on)
{
#if NPCKBD > 0 || NUKBD > 0
        wskbd_cnpollc(dev, on);
#endif
}