1/* $NetBSD: wb_acpi.c,v 1.7 2020/12/07 10:02:51 jmcneill Exp $ */
2
3/*
4 * Copyright (c) 2009 Jared D. McNeill <jmcneill@invisible.ca>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: wb_acpi.c,v 1.7 2020/12/07 10:02:51 jmcneill Exp $");
30
31#include <sys/param.h>
32#include <sys/device.h>
33#include <sys/systm.h>
34
35#include <dev/acpi/acpireg.h>
36#include <dev/acpi/acpivar.h>
37#include <dev/acpi/acpi_intr.h>
38
39#include <dev/ic/w83l518dvar.h>
40#include <dev/ic/w83l518dreg.h>
41
42#include <dev/isa/isadmavar.h>
43
44#include <dev/sdmmc/sdmmcvar.h>
45
46#define _COMPONENT	ACPI_RESOURCE_COMPONENT
47ACPI_MODULE_NAME	("wb_acpi")
48
49static int	wb_acpi_match(device_t, cfdata_t, void *);
50static void	wb_acpi_attach(device_t, device_t, void *);
51static int	wb_acpi_detach(device_t, int);
52static bool	wb_acpi_suspend(device_t, const pmf_qual_t *);
53static bool	wb_acpi_resume(device_t, const pmf_qual_t *);
54
55struct wb_acpi_softc {
56	struct wb_softc sc_wb;
57	isa_chipset_tag_t sc_ic;
58	void *sc_ih;
59	int sc_ioh_length;
60
61	ACPI_HANDLE sc_crs, sc_srs;
62	ACPI_BUFFER sc_crs_buffer;
63};
64
65CFATTACH_DECL_NEW(wb_acpi, sizeof(struct wb_acpi_softc),
66    wb_acpi_match,
67    wb_acpi_attach,
68    wb_acpi_detach,
69    NULL
70);
71
72static const char * const wb_acpi_ids[] = {
73#if notyet
74	"WEC0515",	/* Memory Stick interface */
75#endif
76	"WEC0517",	/* SD Memory Card interface */
77	NULL
78};
79
80static int
81wb_acpi_match(device_t parent, cfdata_t match, void *opaque)
82{
83	struct acpi_attach_args *aa = opaque;
84
85	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
86		return 0;
87
88	return acpi_match_hid(aa->aa_node->ad_devinfo, wb_acpi_ids);
89}
90
91static void
92wb_acpi_attach(device_t parent, device_t self, void *opaque)
93{
94	struct wb_acpi_softc *sc = device_private(self);
95	struct acpi_attach_args *aa = opaque;
96	struct acpi_resources res;
97	struct acpi_io *io;
98	struct acpi_irq *irq;
99	bus_space_handle_t ioh;
100	ACPI_STATUS rv;
101
102	sc->sc_ic = aa->aa_ic;
103
104	rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
105	    &res, &acpi_resource_parse_ops_default);
106	if (ACPI_FAILURE(rv))
107		return;
108
109	AcpiGetHandle(aa->aa_node->ad_handle, "_CRS", &sc->sc_crs);
110	AcpiGetHandle(aa->aa_node->ad_handle, "_SRS", &sc->sc_srs);
111	if (sc->sc_crs && sc->sc_srs) {
112		sc->sc_crs_buffer.Pointer = NULL;
113		sc->sc_crs_buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
114		rv = AcpiGetCurrentResources(sc->sc_crs, &sc->sc_crs_buffer);
115		if (ACPI_FAILURE(rv))
116			sc->sc_crs = sc->sc_srs = NULL;
117	}
118
119	io = acpi_res_io(&res, 0);
120	irq = acpi_res_irq(&res, 0);
121	if (io == NULL || irq == NULL) {
122		aprint_error_dev(self, "incomplete resources\n");
123		goto cleanup;
124	}
125
126	if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 0, &ioh)) {
127		aprint_error_dev(self, "couldn't map registers\n");
128		goto cleanup;
129	}
130	sc->sc_ioh_length = io->ar_length;
131
132	sc->sc_ih = acpi_intr_establish(self,
133	    (uint64_t)(uintptr_t)aa->aa_node->ad_handle,
134	    IPL_SDMMC, false, wb_intr, &sc->sc_wb, device_xname(self));
135	if (sc->sc_ih == NULL) {
136		aprint_error_dev(self,
137		    "couldn't establish interrupt handler\n");
138		goto cleanup;
139	}
140
141	sc->sc_wb.wb_dev = self;
142	sc->sc_wb.wb_type = WB_DEVNO_SD;
143	sc->sc_wb.wb_iot = aa->aa_iot;
144	sc->sc_wb.wb_ioh = ioh;
145	sc->sc_wb.wb_irq = irq->ar_irq;
146	sc->sc_wb.wb_base = io->ar_base;
147	wb_attach(&sc->sc_wb);
148
149	pmf_device_register(self, wb_acpi_suspend, wb_acpi_resume);
150
151cleanup:
152	acpi_resource_cleanup(&res);
153}
154
155static int
156wb_acpi_detach(device_t self, int flags)
157{
158	struct wb_acpi_softc *sc = device_private(self);
159	int rv;
160
161	pmf_device_deregister(self);
162
163	if (sc->sc_crs_buffer.Pointer)
164		ACPI_FREE(sc->sc_crs_buffer.Pointer);
165
166	rv = wb_detach(&sc->sc_wb, flags);
167	if (rv)
168		return rv;
169
170	if (sc->sc_ih)
171		acpi_intr_disestablish(sc->sc_ih);
172
173	if (sc->sc_ioh_length > 0)
174		bus_space_unmap(sc->sc_wb.wb_iot, sc->sc_wb.wb_ioh,
175		    sc->sc_ioh_length);
176
177	return 0;
178}
179
180static bool
181wb_acpi_suspend(device_t self, const pmf_qual_t *qual)
182{
183	struct wb_acpi_softc *sc = device_private(self);
184
185	return wb_suspend(&sc->sc_wb);
186}
187
188static bool
189wb_acpi_resume(device_t self, const pmf_qual_t *qual)
190{
191	struct wb_acpi_softc *sc = device_private(self);
192	ACPI_STATUS rv;
193
194	if (sc->sc_crs && sc->sc_srs) {
195		rv = AcpiSetCurrentResources(sc->sc_srs, &sc->sc_crs_buffer);
196		if (ACPI_FAILURE(rv))
197			printf("%s: _SRS failed: %s\n",
198			    device_xname(self), AcpiFormatException(rv));
199	}
200
201	return wb_resume(&sc->sc_wb);
202}
203