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
49 int tx39uart_match(device_t, cfdata_t, void *);
50 void tx39uart_attach(device_t, device_t, void *);
51 int tx39uart_print(void *, const char *);
52 int tx39uart_search(device_t, cfdata_t, const int *, void *);
53
54 struct tx39uart_softc {
55 tx_chipset_tag_t sc_tc;
56 int sc_enabled;
57 };
58
59 CFATTACH_DECL_NEW(tx39uart, sizeof(struct tx39uart_softc),
60 tx39uart_match, tx39uart_attach, NULL, NULL);
61
62 int
tx39uart_match(device_t parent,cfdata_t cf,void * aux)63 tx39uart_match(device_t parent, cfdata_t cf, void *aux)
64 {
65 return ATTACH_LAST;
66 }
67
68 void
tx39uart_attach(device_t parent,device_t self,void * aux)69 tx39uart_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
82 int
tx39uart_search(device_t parent,cfdata_t cf,const int * ldesc,void * aux)83 tx39uart_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
105 int
tx39uart_print(void * aux,const char * pnp)106 tx39uart_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