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      1 /*	$NetBSD: xmi.c,v 1.13 2021/08/07 16:19:17 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2000 Ludd, University of Lule}, Sweden. All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *      This product includes software developed at Ludd, University of
     17  *      Lule}, Sweden and its contributors.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 /*
     34  * XMI specific routines.
     35  */
     36 
     37 #include <sys/cdefs.h>
     38 __KERNEL_RCSID(0, "$NetBSD: xmi.c,v 1.13 2021/08/07 16:19:17 thorpej Exp $");
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/device.h>
     43 
     44 #include <sys/bus.h>
     45 #include <sys/cpu.h>
     46 
     47 #include <dev/xmi/xmireg.h>
     48 #include <dev/xmi/xmivar.h>
     49 
     50 static int xmi_print(void *, const char *);
     51 
     52 const struct xmi_list xmi_list[] = {
     53 	{XMIDT_KA62, 0, "ka6200"},
     54 	{XMIDT_KA64, 1, "ka6400"},
     55 	{XMIDT_KA65, 0, "ka6500"},
     56 	{XMIDT_KA66, 0, "ka6600"},
     57 	{XMIDT_MS62, 1, "ms62"},
     58 	{XMIDT_DWMBA, 1, "dwmba"},
     59 	{0,0,0}
     60 };
     61 
     62 int
     63 xmi_print(void *aux, const char *name)
     64 {
     65 	struct xmi_attach_args * const xa = aux;
     66 	const struct xmi_list *xl;
     67 
     68 	for (xl = &xmi_list[0]; xl->xl_nr; xl++)
     69 		if (xl->xl_nr == bus_space_read_2(xa->xa_iot, xa->xa_ioh, 0))
     70 			break;
     71 
     72 	if (name) {
     73 		if (xl->xl_nr == 0)
     74 			aprint_normal("unknown device 0x%x",
     75 			    bus_space_read_2(xa->xa_iot, xa->xa_ioh, 0));
     76 		else
     77 			aprint_normal(xl->xl_name);
     78 		aprint_normal(" at %s", name);
     79 	}
     80 	aprint_normal(" node %d", xa->xa_nodenr);
     81 	return xl->xl_havedriver ? UNCONF : UNSUPP;
     82 }
     83 
     84 static	int lastiv = 0;
     85 
     86 void
     87 xmi_attach(struct xmi_softc *sc)
     88 {
     89 	struct xmi_attach_args xa;
     90 	int nodenr;
     91 
     92 	aprint_normal("\n");
     93 
     94 	xa.xa_iot = sc->sc_iot;
     95 	xa.xa_busnr = sc->sc_busnr;
     96 	xa.xa_dmat = sc->sc_dmat;
     97 	xa.xa_intcpu = sc->sc_intcpu;
     98 	/*
     99 	 * Interrupt numbers. All vectors from 256-512 are free, use
    100 	 * them for XMI devices and just count them up.
    101 	 * Above 512 are only interrupt vectors for unibus devices.
    102 	 *
    103 	 * The XMI nodespace is giant in size. Only map in the first
    104 	 * page here and map more (if needed) in the device itself.
    105 	 */
    106 	for (nodenr = 0; nodenr < NNODEXMI; nodenr++) {
    107 		if (bus_space_map(sc->sc_iot, sc->sc_addr + XMI_NODE(nodenr),
    108 		    PAGE_SIZE, 0, &xa.xa_ioh)) {
    109 			aprint_error_dev(sc->sc_dev,
    110 			    "bus_space_map failed, node %d\n", nodenr);
    111 			return;
    112 		}
    113 		if (badaddr((void *)xa.xa_ioh, 4)) {
    114 			bus_space_unmap(sc->sc_iot, xa.xa_ioh, PAGE_SIZE);
    115 			continue;
    116 		}
    117 		xa.xa_nodenr = nodenr;
    118 		xa.xa_ivec = 256 + lastiv;
    119 		lastiv += 4;
    120 		config_found(sc->sc_dev, &xa, xmi_print, CFARGS_NONE);
    121 	}
    122 }
    123