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lpt_ofisa.c revision 1.3 
      1 /*	$NetBSD: lpt_ofisa.c,v 1.3 2001/11/13 07:29:45 lukem Exp $	*/
      2 
      3 /*
      4  * Copyright 1997, 1998
      5  * Digital Equipment Corporation. All rights reserved.
      6  *
      7  * This software is furnished under license and may be used and
      8  * copied only in accordance with the following terms and conditions.
      9  * Subject to these conditions, you may download, copy, install,
     10  * use, modify and distribute this software in source and/or binary
     11  * form. No title or ownership is transferred hereby.
     12  *
     13  * 1) Any source code used, modified or distributed must reproduce
     14  *    and retain this copyright notice and list of conditions as
     15  *    they appear in the source file.
     16  *
     17  * 2) No right is granted to use any trade name, trademark, or logo of
     18  *    Digital Equipment Corporation. Neither the "Digital Equipment
     19  *    Corporation" name nor any trademark or logo of Digital Equipment
     20  *    Corporation may be used to endorse or promote products derived
     21  *    from this software without the prior written permission of
     22  *    Digital Equipment Corporation.
     23  *
     24  * 3) This software is provided "AS-IS" and any express or implied
     25  *    warranties, including but not limited to, any implied warranties
     26  *    of merchantability, fitness for a particular purpose, or
     27  *    non-infringement are disclaimed. In no event shall DIGITAL be
     28  *    liable for any damages whatsoever, and in particular, DIGITAL
     29  *    shall not be liable for special, indirect, consequential, or
     30  *    incidental damages or damages for lost profits, loss of
     31  *    revenue or loss of use, whether such damages arise in contract,
     32  *    negligence, tort, under statute, in equity, at law or otherwise,
     33  *    even if advised of the possibility of such damage.
     34  */
     35 
     36 /*
     37  * OFW Attachment for 'lpt' parallel port driver
     38  */
     39 
     40 #include <sys/cdefs.h>
     41 __KERNEL_RCSID(0, "$NetBSD: lpt_ofisa.c,v 1.3 2001/11/13 07:29:45 lukem Exp $");
     42 
     43 #include <sys/param.h>
     44 #include <sys/device.h>
     45 #include <sys/systm.h>
     46 #include <sys/tty.h>
     47 
     48 #include <machine/intr.h>
     49 #include <machine/bus.h>
     50 
     51 #include <dev/ofw/openfirm.h>
     52 #include <dev/isa/isavar.h>
     53 #include <dev/ofisa/ofisavar.h>
     54 
     55 #include <dev/ic/lptreg.h>
     56 #include <dev/ic/lptvar.h>
     57 
     58 struct lpt_ofisa_softc {
     59 	struct	lpt_softc sc_lpt;	/* real "lpt" softc */
     60 
     61 	/* OFW ISA-specific goo. */
     62 	void	*sc_ih;			/* interrupt handler */
     63 };
     64 
     65 int lpt_ofisa_probe __P((struct device *, struct cfdata *, void *));
     66 void lpt_ofisa_attach __P((struct device *, struct device *, void *));
     67 
     68 struct cfattach lpt_ofisa_ca = {
     69 	sizeof(struct lpt_ofisa_softc), lpt_ofisa_probe, lpt_ofisa_attach
     70 };
     71 
     72 int
     73 lpt_ofisa_probe(parent, cf, aux)
     74 	struct device *parent;
     75 	struct cfdata *cf;
     76 	void *aux;
     77 {
     78 	struct ofisa_attach_args *aa = aux;
     79 	const char *compatible_strings[] = { "pnpPNP,401", NULL };
     80 	int rv = 0;
     81 
     82 	if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
     83 		rv = 5;
     84 #ifdef _LPT_OFISA_MD_MATCH
     85 	if (!rv)
     86 		rv = lpt_ofisa_md_match(parent, cf, aux);
     87 #endif
     88 	return (rv);
     89 }
     90 
     91 void
     92 lpt_ofisa_attach(parent, self, aux)
     93 	struct device *parent, *self;
     94 	void *aux;
     95 {
     96 	struct lpt_ofisa_softc *osc = (void *)self;
     97         struct lpt_softc *sc = &osc->sc_lpt;
     98 	struct ofisa_attach_args *aa = aux;
     99 	struct ofisa_reg_desc reg;
    100 	struct ofisa_intr_desc intr;
    101 	int n;
    102 
    103 	/*
    104 	 * We're living on an ofw.  We have to ask the OFW what our
    105 	 * registers and interrupts properties look like.
    106 	 *
    107 	 * We expect exactly one register region and one interrupt.
    108 	 */
    109 
    110 	n = ofisa_reg_get(aa->oba.oba_phandle, &reg, 1);
    111 #ifdef _LPT_OFISA_MD_REG_FIXUP
    112 	n = lpt_ofisa_md_reg_fixup(parent, self, aux, &reg, 1, n);
    113 #endif
    114 	if (n != 1) {
    115 		printf(": error getting register data\n");
    116 		return;
    117 	}
    118 	if (reg.len != 4 && reg.len != 8) {
    119 		printf(": weird register size (%lu, expected 4 or 8)\n",
    120 		    (unsigned long)reg.len);
    121 		return;
    122 	}
    123 
    124 	n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
    125 #ifdef _LPT_OFISA_MD_INTR_FIXUP
    126 	n = lpt_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n);
    127 #endif
    128 	if (n != 1) {
    129 		printf(": error getting interrupt data\n");
    130 		return;
    131 	}
    132 
    133 	sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
    134 	if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 0, &sc->sc_ioh)) {
    135 		printf(": can't map register space\n");
    136                 return;
    137         }
    138 
    139 	osc->sc_ih = isa_intr_establish(aa->ic, intr.irq, intr.share,
    140 	    IPL_TTY, lptintr, sc);
    141 
    142 	printf("\n");
    143 
    144 	lpt_attach_subr(sc);
    145 
    146 #if 0
    147 	printf("%s: registers: ", sc->sc_dev.dv_xname);
    148 	ofisa_reg_print(&reg, 1);
    149 	printf("\n");
    150 	printf("%s: interrupts: ", sc->sc_dev.dv_xname);
    151 	ofisa_intr_print(&intr, 1);
    152 	printf("\n");
    153 #endif
    154 }
    155