/* $OpenBSD: tcasic.c,v 1.21 2025/06/29 15:55:22 miod Exp $ */
/* $NetBSD: tcasic.c,v 1.36 2001/08/23 01:16:52 nisimura Exp $ */

/*
 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 * 
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

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

#include <machine/autoconf.h>
#include <machine/rpb.h>
#include <machine/cpu.h>

#include <dev/tc/tcvar.h>
#include <alpha/tc/tc_conf.h>

/* Definition of the driver for autoconfig. */
int     tcasicmatch(struct device *, void *, void *);
void    tcasicattach(struct device *, struct device *, void *);
int     tcasicactivate(struct device *, int);

const struct cfattach tcasic_ca = {
        .ca_devsize = sizeof (struct device),
        .ca_match = tcasicmatch,
        .ca_attach = tcasicattach,
        .ca_activate = tcasicactivate
};

struct cfdriver tcasic_cd = {
        NULL, "tcasic", DV_DULL,
};


int     tcasicprint(void *, const char *);

/* There can be only one. */
int     tcasicfound;

int
tcasicmatch(struct device *parent, void *cfdata, void *aux)
{
        struct mainbus_attach_args *ma = aux;

        /* Make sure that we're looking for a TurboChannel ASIC. */
        if (strcmp(ma->ma_name, tcasic_cd.cd_name))
                return (0);

        if (tcasicfound)
                return (0);

        return (1);
}

void
tcasicattach(struct device *parent, struct device *self, void *aux)
{
        struct tcbus_attach_args tba;
        void (*intr_setup)(void);
        void (*iointr)(void *, unsigned long);

        printf("\n");
        tcasicfound = 1;

        switch (cputype) {
#ifdef DEC_3000_500
        case ST_DEC_3000_500:

                intr_setup = tc_3000_500_intr_setup;
                iointr = tc_3000_500_iointr;

                if ((hwrpb->rpb_type & SV_ST_MASK) == SV_ST_SANDPIPER)
                        tba.tba_speed = TC_SPEED_22_5_MHZ;
                else
                        tba.tba_speed = TC_SPEED_25_MHZ;
                tba.tba_nslots = tc_3000_500_nslots;
                tba.tba_slots = tc_3000_500_slots;
                if (hwrpb->rpb_variation & SV_GRAPHICS) {
                        tba.tba_nbuiltins = tc_3000_500_graphics_nbuiltins;
                        tba.tba_builtins = tc_3000_500_graphics_builtins;
                } else {
                        tba.tba_nbuiltins = tc_3000_500_nographics_nbuiltins;
                        tba.tba_builtins = tc_3000_500_nographics_builtins;
                }
                tba.tba_intr_establish = tc_3000_500_intr_establish;
                tba.tba_intr_disestablish = tc_3000_500_intr_disestablish;
                tba.tba_get_dma_tag = tc_dma_get_tag_3000_500;

                /* Do 3000/500-specific DMA setup now. */
                tc_dma_init_3000_500(tc_3000_500_nslots);
                break;
#endif /* DEC_3000_500 */

#ifdef DEC_3000_300
        case ST_DEC_3000_300:

                intr_setup = tc_3000_300_intr_setup;
                iointr = tc_3000_300_iointr;

                tba.tba_speed = TC_SPEED_12_5_MHZ;
                tba.tba_nslots = tc_3000_300_nslots;
                tba.tba_slots = tc_3000_300_slots;
                tba.tba_nbuiltins = tc_3000_300_nbuiltins;
                tba.tba_builtins = tc_3000_300_builtins;
                tba.tba_intr_establish = tc_3000_300_intr_establish;
                tba.tba_intr_disestablish = tc_3000_300_intr_disestablish;
                tba.tba_get_dma_tag = tc_dma_get_tag_3000_300;
                break;
#endif /* DEC_3000_300 */

        default:
                panic("tcasicattach: bad cputype");
        }

        tba.tba_busname = "tc";
        tba.tba_memt = tc_bus_mem_init(NULL);
        
        tc_dma_init();

        (*intr_setup)();

        /* They all come in at 0x800. */
        scb_set(0x800, iointr, NULL);

        config_found(self, &tba, tcasicprint);
}

int
tcasicactivate(struct device *self, int act)
{
        switch (cputype) {
#ifdef DEC_3000_500
        case ST_DEC_3000_500:
                return tc_3000_500_activate(self, act);
#endif
        default:
                return config_activate_children(self, act);
        }
}

int
tcasicprint(void *aux, const char *pnp)
{

        /* only TCs can attach to tcasics; easy. */
        if (pnp)
                printf("tc at %s", pnp);
        return (UNCONF);
}

int
tc_fb_cnattach(tc_addr_t tcaddr)
{
                return (ENXIO);
}