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tx39uart.c revision 1.14 
      1 /*	$NetBSD: tx39uart.c,v 1.14 2008/04/28 20:23:22 martin Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: tx39uart.c,v 1.14 2008/04/28 20:23:22 martin Exp $");
     34 
     35 #include "opt_tx39uart_debug.h"
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/device.h>
     40 
     41 #include <machine/bus.h>
     42 #include <machine/intr.h>
     43 
     44 #include <hpcmips/tx/tx39var.h>
     45 #include <hpcmips/tx/tx39uartvar.h>
     46 
     47 #include "locators.h"
     48 
     49 int	tx39uart_match(struct device *, struct cfdata *, void *);
     50 void	tx39uart_attach(struct device *, struct device *, void *);
     51 int	tx39uart_print(void *, const char *);
     52 int	tx39uart_search(struct device *, struct cfdata *,
     53 			const int *, void *);
     54 
     55 struct tx39uart_softc {
     56 	struct	device sc_dev;
     57 	tx_chipset_tag_t sc_tc;
     58 	int sc_enabled;
     59 };
     60 
     61 CFATTACH_DECL(tx39uart, sizeof(struct tx39uart_softc),
     62     tx39uart_match, tx39uart_attach, NULL, NULL);
     63 
     64 int
     65 tx39uart_match(struct device *parent, struct cfdata *cf, void *aux)
     66 {
     67 	return ATTACH_LAST;
     68 }
     69 
     70 void
     71 tx39uart_attach(struct device *parent, struct device *self, void *aux)
     72 {
     73 	struct txsim_attach_args *ta = aux;
     74 	struct tx39uart_softc *sc = (void *)self;
     75 	tx_chipset_tag_t tc;
     76 
     77 	printf("\n");
     78 	sc->sc_tc = tc = ta->ta_tc;
     79 
     80 	config_search_ia(tx39uart_search, self, "txcomif", tx39uart_print);
     81 }
     82 
     83 int
     84 tx39uart_search(struct device *parent, struct cfdata *cf,
     85 		const int *ldesc, void *aux)
     86 {
     87 	struct tx39uart_softc *sc = (void *)parent;
     88 	struct tx39uart_attach_args ua;
     89 
     90 	ua.ua_tc	= sc->sc_tc;
     91 	ua.ua_slot	= cf->cf_loc[TXCOMIFCF_SLOT];
     92 
     93 	if (ua.ua_slot == TXCOMIFCF_SLOT_DEFAULT) {
     94 		printf("tx39uart_search: wildcarded slot, skipping\n");
     95 		return 0;
     96 	}
     97 
     98 	if (!(sc->sc_enabled & (1 << ua.ua_slot)) && /* not attached slot */
     99 	    config_match(parent, cf, &ua)) {
    100 		config_attach(parent, cf, &ua, tx39uart_print);
    101 		sc->sc_enabled |= (1 << ua.ua_slot);
    102 	}
    103 
    104 	return 0;
    105 }
    106 
    107 int
    108 tx39uart_print(void *aux, const char *pnp)
    109 {
    110 	struct tx39uart_attach_args *ua = aux;
    111 
    112 	aprint_normal(" slot %d", ua->ua_slot);
    113 
    114 	return QUIET;
    115 }
    116