1 | /* $NetBSD: sdhc_acpi.c,v 1.3 2016/08/11 01:54:30 nonaka Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2016 Kimihiro Nonaka <nonaka@NetBSD.org> |
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: sdhc_acpi.c,v 1.3 2016/08/11 01:54:30 nonaka Exp $" ); |
30 | |
31 | #include <sys/param.h> |
32 | #include <sys/device.h> |
33 | #include <sys/systm.h> |
34 | #include <sys/kmem.h> |
35 | |
36 | #include <dev/acpi/acpireg.h> |
37 | #include <dev/acpi/acpivar.h> |
38 | |
39 | #include <dev/sdmmc/sdhcreg.h> |
40 | #include <dev/sdmmc/sdhcvar.h> |
41 | #include <dev/sdmmc/sdmmcvar.h> |
42 | |
43 | #define _COMPONENT ACPI_RESOURCE_COMPONENT |
44 | ACPI_MODULE_NAME ("sdhc_acpi" ) |
45 | |
46 | static int sdhc_acpi_match(device_t, cfdata_t, void *); |
47 | static void sdhc_acpi_attach(device_t, device_t, void *); |
48 | static int sdhc_acpi_detach(device_t, int); |
49 | static bool sdhc_acpi_resume(device_t, const pmf_qual_t *); |
50 | |
51 | struct sdhc_acpi_softc { |
52 | struct sdhc_softc sc; |
53 | int sc_irq; |
54 | |
55 | ACPI_HANDLE sc_crs, sc_srs; |
56 | ACPI_BUFFER sc_crs_buffer; |
57 | }; |
58 | |
59 | CFATTACH_DECL_NEW(sdhc_acpi, sizeof(struct sdhc_acpi_softc), |
60 | sdhc_acpi_match, sdhc_acpi_attach, sdhc_acpi_detach, NULL); |
61 | |
62 | static uint32_t sdhc_acpi_intr(void *); |
63 | |
64 | static const char * const sdhc_acpi_ids[] = { |
65 | "80860F14" , |
66 | "80860F16" , |
67 | NULL |
68 | }; |
69 | |
70 | static int |
71 | sdhc_acpi_match(device_t parent, cfdata_t match, void *opaque) |
72 | { |
73 | struct acpi_attach_args *aa = opaque; |
74 | |
75 | if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) |
76 | return 0; |
77 | |
78 | return acpi_match_hid(aa->aa_node->ad_devinfo, sdhc_acpi_ids); |
79 | } |
80 | |
81 | static void |
82 | sdhc_acpi_attach(device_t parent, device_t self, void *opaque) |
83 | { |
84 | struct sdhc_acpi_softc *sc = device_private(self); |
85 | struct acpi_attach_args *aa = opaque; |
86 | struct acpi_resources res; |
87 | struct acpi_mem *mem; |
88 | struct acpi_irq *irq; |
89 | bus_space_handle_t memh; |
90 | ACPI_STATUS rv; |
91 | |
92 | sc->sc.sc_dev = self; |
93 | sc->sc.sc_dmat = aa->aa_dmat; |
94 | sc->sc.sc_host = NULL; |
95 | sc->sc_irq = -1; |
96 | |
97 | rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS" , |
98 | &res, &acpi_resource_parse_ops_default); |
99 | if (ACPI_FAILURE(rv)) |
100 | return; |
101 | |
102 | AcpiGetHandle(aa->aa_node->ad_handle, "_CRS" , &sc->sc_crs); |
103 | AcpiGetHandle(aa->aa_node->ad_handle, "_SRS" , &sc->sc_srs); |
104 | if (sc->sc_crs && sc->sc_srs) { |
105 | /* XXX Why need this? */ |
106 | sc->sc_crs_buffer.Pointer = NULL; |
107 | sc->sc_crs_buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; |
108 | rv = AcpiGetCurrentResources(sc->sc_crs, &sc->sc_crs_buffer); |
109 | if (ACPI_FAILURE(rv)) |
110 | sc->sc_crs = sc->sc_srs = NULL; |
111 | } |
112 | |
113 | mem = acpi_res_mem(&res, 0); |
114 | irq = acpi_res_irq(&res, 0); |
115 | if (mem == NULL || irq == NULL) { |
116 | aprint_error_dev(self, "incomplete resources\n" ); |
117 | goto cleanup; |
118 | } |
119 | |
120 | if (bus_space_map(aa->aa_memt, mem->ar_base, mem->ar_length, 0, |
121 | &memh)) { |
122 | aprint_error_dev(self, "couldn't map registers\n" ); |
123 | goto cleanup; |
124 | } |
125 | |
126 | /* XXX acpi_intr_establish? */ |
127 | rv = AcpiOsInstallInterruptHandler(irq->ar_irq, sdhc_acpi_intr, sc); |
128 | if (ACPI_FAILURE(rv)) { |
129 | aprint_error_dev(self, |
130 | "couldn't establish interrupt handler\n" ); |
131 | goto cleanup; |
132 | } |
133 | sc->sc_irq = irq->ar_irq; |
134 | |
135 | sc->sc.sc_host = kmem_zalloc(sizeof(struct sdhc_host *), KM_NOSLEEP); |
136 | if (sc->sc.sc_host == NULL) { |
137 | aprint_error_dev(self, "couldn't alloc memory\n" ); |
138 | goto cleanup; |
139 | } |
140 | |
141 | /* Enable DMA transfer */ |
142 | sc->sc.sc_flags |= SDHC_FLAG_USE_DMA; |
143 | |
144 | if (sdhc_host_found(&sc->sc, aa->aa_memt, memh, mem->ar_length) != 0) { |
145 | aprint_error_dev(self, "couldn't initialize host\n" ); |
146 | goto cleanup; |
147 | } |
148 | |
149 | if (!pmf_device_register1(self, sdhc_suspend, sdhc_acpi_resume, |
150 | sdhc_shutdown)) { |
151 | aprint_error_dev(self, "couldn't establish powerhook\n" ); |
152 | } |
153 | |
154 | acpi_resource_cleanup(&res); |
155 | return; |
156 | |
157 | cleanup: |
158 | acpi_resource_cleanup(&res); |
159 | if (sc->sc_crs_buffer.Pointer) |
160 | ACPI_FREE(sc->sc_crs_buffer.Pointer); |
161 | if (sc->sc_irq >= 0) |
162 | /* XXX acpi_intr_disestablish? */ |
163 | AcpiOsRemoveInterruptHandler(sc->sc_irq, sdhc_acpi_intr); |
164 | if (sc->sc.sc_host != NULL) |
165 | kmem_free(sc->sc.sc_host, sizeof(struct sdhc_host *)); |
166 | } |
167 | |
168 | static int |
169 | sdhc_acpi_detach(device_t self, int flags) |
170 | { |
171 | struct sdhc_acpi_softc *sc = device_private(self); |
172 | int rv; |
173 | |
174 | pmf_device_deregister(self); |
175 | |
176 | if (sc->sc_crs_buffer.Pointer) |
177 | ACPI_FREE(sc->sc_crs_buffer.Pointer); |
178 | |
179 | rv = sdhc_detach(&sc->sc, flags); |
180 | if (rv) |
181 | return rv; |
182 | |
183 | if (sc->sc_irq >= 0) |
184 | /* XXX acpi_intr_disestablish? */ |
185 | AcpiOsRemoveInterruptHandler(sc->sc_irq, sdhc_acpi_intr); |
186 | |
187 | if (sc->sc.sc_host != NULL) |
188 | kmem_free(sc->sc.sc_host, sizeof(struct sdhc_host *)); |
189 | |
190 | return 0; |
191 | } |
192 | |
193 | static bool |
194 | sdhc_acpi_resume(device_t self, const pmf_qual_t *qual) |
195 | { |
196 | struct sdhc_acpi_softc *sc = device_private(self); |
197 | ACPI_STATUS rv; |
198 | |
199 | if (sc->sc_crs && sc->sc_srs) { |
200 | rv = AcpiSetCurrentResources(sc->sc_srs, &sc->sc_crs_buffer); |
201 | if (ACPI_FAILURE(rv)) |
202 | printf("%s: _SRS failed: %s\n" , |
203 | device_xname(self), AcpiFormatException(rv)); |
204 | } |
205 | |
206 | return sdhc_resume(self, qual); |
207 | } |
208 | |
209 | static uint32_t |
210 | sdhc_acpi_intr(void *context) |
211 | { |
212 | struct sdhc_acpi_softc *sc = context; |
213 | |
214 | if (!sdhc_intr(&sc->sc)) |
215 | return ACPI_INTERRUPT_NOT_HANDLED; |
216 | return ACPI_INTERRUPT_HANDLED; |
217 | } |
218 | |