1/*	$NetBSD: apple_smc_acpi.c,v 1.5 2021/01/29 15:49:55 thorpej Exp $	*/
2
3/*
4 * Apple System Management Controller: ACPI Attachment
5 */
6
7/*-
8 * Copyright (c) 2013 The NetBSD Foundation, Inc.
9 * All rights reserved.
10 *
11 * This code is derived from software contributed to The NetBSD Foundation
12 * by Taylor R. Campbell.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 *    notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 *    notice, this list of conditions and the following disclaimer in the
21 *    documentation and/or other materials provided with the distribution.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
37__KERNEL_RCSID(0, "$NetBSD: apple_smc_acpi.c,v 1.5 2021/01/29 15:49:55 thorpej Exp $");
38
39#include <sys/types.h>
40#include <sys/param.h>
41#include <sys/bus.h>
42#include <sys/module.h>
43
44#include <dev/acpi/acpireg.h>
45#include <dev/acpi/acpivar.h>
46
47#include <dev/ic/apple_smcreg.h>
48#include <dev/ic/apple_smcvar.h>
49
50#define _COMPONENT		ACPI_RESOURCE_COMPONENT
51ACPI_MODULE_NAME		("apple_smc_acpi")
52
53struct apple_smc_acpi_softc {
54	struct apple_smc_tag	sc_smc;
55};
56
57static int	apple_smc_acpi_match(device_t, cfdata_t, void *);
58static void	apple_smc_acpi_attach(device_t, device_t, void *);
59static int	apple_smc_acpi_detach(device_t, int);
60static int	apple_smc_acpi_rescan(device_t, const char *, const int *);
61static void	apple_smc_acpi_child_detached(device_t, device_t);
62
63CFATTACH_DECL2_NEW(apple_smc_acpi, sizeof(struct apple_smc_acpi_softc),
64    apple_smc_acpi_match,
65    apple_smc_acpi_attach,
66    apple_smc_acpi_detach,
67    NULL /* activate */,
68    apple_smc_acpi_rescan,
69    apple_smc_acpi_child_detached);
70
71static const struct device_compatible_entry compat_data[] = {
72	{ .compat = "APP0001" },
73	DEVICE_COMPAT_EOL
74};
75
76static int
77apple_smc_acpi_match(device_t parent, cfdata_t match, void *aux)
78{
79	struct acpi_attach_args *aa = aux;
80
81	return acpi_compatible_match(aa, compat_data);
82}
83
84static void
85apple_smc_acpi_attach(device_t parent, device_t self, void *aux)
86{
87	struct apple_smc_acpi_softc *sc = device_private(self);
88	struct apple_smc_tag *smc = &sc->sc_smc;
89	struct acpi_attach_args *aa = aux;
90	struct acpi_resources res;
91	struct acpi_io *io;
92	int rv;
93
94	smc->smc_dev = self;
95
96	aprint_normal("\n");
97	aprint_naive("\n");
98
99	rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
100	    &res, &acpi_resource_parse_ops_default);
101	if (ACPI_FAILURE(rv)) {
102		aprint_error_dev(self, "couldn't parse SMC resources: %s\n",
103		    AcpiFormatException(rv));
104		goto out0;
105	}
106
107	io = acpi_res_io(&res, 0);
108	if (io == NULL) {
109		aprint_error_dev(self, "no I/O resource\n");
110		goto out1;
111	}
112
113	if (io->ar_length < APPLE_SMC_REGSIZE) {
114		aprint_error_dev(self, "I/O resources too small: %"PRId32"\n",
115		    io->ar_length);
116		goto out1;
117	}
118
119	if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 0,
120		&smc->smc_bsh) != 0) {
121		aprint_error_dev(self, "unable to map I/O registers\n");
122		goto out1;
123	}
124
125	smc->smc_bst = aa->aa_iot;
126	smc->smc_size = io->ar_length;
127
128	apple_smc_attach(smc);
129
130out1:	acpi_resource_cleanup(&res);
131out0:	return;
132}
133
134static int
135apple_smc_acpi_detach(device_t self, int flags)
136{
137	struct apple_smc_acpi_softc *sc = device_private(self);
138	struct apple_smc_tag *smc = &sc->sc_smc;
139	int error;
140
141	if (smc->smc_size != 0) {
142		error = apple_smc_detach(smc, flags);
143		if (error)
144			return error;
145
146		bus_space_unmap(smc->smc_bst, smc->smc_bsh, smc->smc_size);
147		smc->smc_size = 0;
148	}
149
150	return 0;
151}
152
153static int
154apple_smc_acpi_rescan(device_t self, const char *ifattr, const int *locs)
155{
156	struct apple_smc_acpi_softc *const sc = device_private(self);
157
158	return apple_smc_rescan(&sc->sc_smc, ifattr, locs);
159}
160
161static void
162apple_smc_acpi_child_detached(device_t self, device_t child)
163{
164	struct apple_smc_acpi_softc *const sc = device_private(self);
165
166	apple_smc_child_detached(&sc->sc_smc, child);
167}
168
169MODULE(MODULE_CLASS_DRIVER, apple_smc_acpi, "apple_smc");
170
171#ifdef _MODULE
172#include "ioconf.c"
173#endif
174
175static int
176apple_smc_acpi_modcmd(modcmd_t cmd, void *arg __unused)
177{
178#ifdef _MODULE
179	int error;
180#endif
181
182	switch (cmd) {
183	case MODULE_CMD_INIT:
184#ifdef _MODULE
185		error = config_init_component(cfdriver_ioconf_apple_smc_acpi,
186		    cfattach_ioconf_apple_smc_acpi,
187		    cfdata_ioconf_apple_smc_acpi);
188		if (error)
189			return error;
190#endif
191		return 0;
192
193	case MODULE_CMD_FINI:
194#ifdef _MODULE
195		error = config_fini_component(cfdriver_ioconf_apple_smc_acpi,
196		    cfattach_ioconf_apple_smc_acpi,
197		    cfdata_ioconf_apple_smc_acpi);
198		if (error)
199			return error;
200#endif
201		return 0;
202
203	default:
204		return ENOTTY;
205	}
206}
207