/*      $NetBSD: cgsix_obio.c,v 1.28 2023/12/20 05:33:18 thorpej Exp $ */

/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

/*
* color display (cgsix) driver; sun4 obio bus front-end.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cgsix_obio.c,v 1.28 2023/12/20 05:33:18 thorpej Exp $");

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

#ifdef DEBUG
#include <sys/proc.h>
#include <sys/syslog.h>
#endif

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

#include <dev/sun/fbio.h>
#include <dev/sun/fbvar.h>
#include <dev/sun/btreg.h>
#include <dev/sun/btvar.h>
#include <dev/sun/cgsixreg.h>
#include <dev/sun/cgsixvar.h>
#include <dev/sun/pfourreg.h>

/* autoconfiguration driver */
static int      cgsixmatch(device_t, struct cfdata *, void *);
static void     cgsixattach(device_t, device_t, void *);
static int      cg6_pfour_probe(void *, void *);

CFATTACH_DECL_NEW(cgsix_obio, sizeof(struct cgsix_softc),
   cgsixmatch, cgsixattach, NULL, NULL);

/*
* Match a cgsix.
*/
static int
cgsixmatch(device_t parent, struct cfdata *cf, void *aux)
{
       union obio_attach_args *uoba = aux;
       struct obio4_attach_args *oba;

       if (uoba->uoba_isobio4 == 0)
               return (0);

       oba = &uoba->uoba_oba4;
       return (bus_space_probe(oba->oba_bustag,
                               oba->oba_paddr + CGSIX_FHC_OFFSET,
                               4,      /* probe size */
                               0,      /* offset */
                               0,      /* flags */
                               cg6_pfour_probe, NULL));
}

static int
cg6_pfour_probe(void *vaddr, void *arg)
{

       return (fb_pfour_id(vaddr) == PFOUR_ID_FASTCOLOR);
}


/*
* Attach a display.
*/
static void
cgsixattach(device_t parent, device_t self, void *aux)
{
       struct cgsix_softc *sc = device_private(self);
       union obio_attach_args *uoba = aux;
       struct obio4_attach_args *oba;
       struct eeprom *eep = (struct eeprom *)eeprom_va;
       struct fbdevice *fb = &sc->sc_fb;
       bus_space_handle_t bh;
       int constype, isconsole;
       const char *name;

       sc->sc_dev = self;
       oba = &uoba->uoba_oba4;

       /* Remember cookies for cgsix_mmap() */
       sc->sc_bustag = oba->oba_bustag;
       sc->sc_paddr = (bus_addr_t)oba->oba_paddr;

       fb->fb_device = sc->sc_dev;
       fb->fb_type.fb_type = FBTYPE_SUNFAST_COLOR;
       fb->fb_flags = device_cfdata(sc->sc_dev)->cf_flags & FB_USERMASK;
       fb->fb_type.fb_depth = 8;

       fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900);

       sc->sc_ramsize = 1024 * 1024;   /* All our cgsix's are 1MB */

       /*
        * Dunno what the PROM has mapped, though obviously it must have
        * the video RAM mapped.  Just map what we care about for ourselves
        * (the FHC, THC, and Brooktree registers).
        */
       if (bus_space_map(oba->oba_bustag,
                         oba->oba_paddr + CGSIX_BT_OFFSET,
                         sizeof(*sc->sc_bt),
                         BUS_SPACE_MAP_LINEAR,
                         &bh) != 0) {
               printf("%s: cannot map brooktree registers\n", device_xname(self));
               return;
       }
       sc->sc_bt = (struct bt_regs *)bh;

       if (bus_space_map(oba->oba_bustag,
                         oba->oba_paddr + CGSIX_FHC_OFFSET,
                         sizeof(*sc->sc_fhc),
                         BUS_SPACE_MAP_LINEAR,
                         &bh) != 0) {
               printf("%s: cannot map FHC registers\n", device_xname(self));
               return;
       }
       sc->sc_fhc = (int *)bh;

       if (bus_space_map(oba->oba_bustag,
                         oba->oba_paddr + CGSIX_THC_OFFSET,
                         sizeof(*sc->sc_thc),
                         BUS_SPACE_MAP_LINEAR,
                         &bh) != 0) {
               printf("%s: cannot map THC registers\n", device_xname(self));
               return;
       }
       sc->sc_thc = (struct cg6_thc *)bh;

       if (bus_space_map(oba->oba_bustag,
                         oba->oba_paddr + CGSIX_TEC_OFFSET,
                         sizeof(*sc->sc_tec),
                         BUS_SPACE_MAP_LINEAR,
                         &bh) != 0) {
               printf("%s: cannot map TEC registers\n", device_xname(self));
               return;
       }
       sc->sc_tec = (struct cg6_tec_xxx *)bh;

       if (bus_space_map(oba->oba_bustag,
                         oba->oba_paddr + CGSIX_FBC_OFFSET,
                         sizeof(*sc->sc_fbc),
                         BUS_SPACE_MAP_LINEAR,
                         &bh) != 0) {
               printf("%s: cannot map FBC registers\n", device_xname(self));
               return;
       }
       sc->sc_fbc = (struct cg6_fbc *)bh;


       if (fb_pfour_id(sc->sc_fhc) == PFOUR_ID_FASTCOLOR) {
               fb->fb_flags |= FB_PFOUR;
               name = "cgsix/p4";
       } else
               name = "cgsix";

       constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_COLOR;

       /*
        * Check to see if this is the console if there's no eeprom info
        * to be found, or if it's the correct framebuffer type.
        */
       if (eep == NULL || eep->eeConsole == constype)
               isconsole = fb_is_console(0);
       else
               isconsole = 0;

       if (bus_space_map(oba->oba_bustag,
                         oba->oba_paddr + CGSIX_RAM_OFFSET,
                         sc->sc_ramsize,
                         BUS_SPACE_MAP_LINEAR,
                         &bh) != 0) {
               printf("%s: cannot map pixels\n", device_xname(self));
               return;
       }
       sc->sc_fb.fb_pixels = (void *)bh;

       cg6attach(sc, name, isconsole);
}

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