1/*	$NetBSD: tx39uart.c,v 1.17 2021/08/07 16:18:54 thorpej 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 1.17 2021/08/07 16:18:54 thorpej 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
49int	tx39uart_match(device_t, cfdata_t, void *);
50void	tx39uart_attach(device_t, device_t, void *);
51int	tx39uart_print(void *, const char *);
52int	tx39uart_search(device_t, cfdata_t, const int *, void *);
53
54struct tx39uart_softc {
55	tx_chipset_tag_t sc_tc;
56	int sc_enabled;
57};
58
59CFATTACH_DECL_NEW(tx39uart, sizeof(struct tx39uart_softc),
60    tx39uart_match, tx39uart_attach, NULL, NULL);
61
62int
63tx39uart_match(device_t parent, cfdata_t cf, void *aux)
64{
65	return ATTACH_LAST;
66}
67
68void
69tx39uart_attach(device_t parent, device_t self, void *aux)
70{
71	struct txsim_attach_args *ta = aux;
72	struct tx39uart_softc *sc = device_private(self);
73	tx_chipset_tag_t tc;
74
75	printf("\n");
76	sc->sc_tc = tc = ta->ta_tc;
77
78	config_search(self, NULL,
79	    CFARGS(.search = tx39uart_search));
80}
81
82int
83tx39uart_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
84{
85	struct tx39uart_softc *sc = device_private(parent);
86	struct tx39uart_attach_args ua;
87
88	ua.ua_tc	= sc->sc_tc;
89	ua.ua_slot	= cf->cf_loc[TXCOMIFCF_SLOT];
90
91	if (ua.ua_slot == TXCOMIFCF_SLOT_DEFAULT) {
92		printf("tx39uart_search: wildcarded slot, skipping\n");
93		return 0;
94	}
95
96	if (!(sc->sc_enabled & (1 << ua.ua_slot)) && /* not attached slot */
97	    config_probe(parent, cf, &ua)) {
98		config_attach(parent, cf, &ua, tx39uart_print, CFARGS_NONE);
99		sc->sc_enabled |= (1 << ua.ua_slot);
100	}
101
102	return 0;
103}
104
105int
106tx39uart_print(void *aux, const char *pnp)
107{
108	struct tx39uart_attach_args *ua = aux;
109
110	aprint_normal(" slot %d", ua->ua_slot);
111
112	return QUIET;
113}
114