1 /* $NetBSD: ohci_acpi.c,v 1.2 2021/12/26 14:35:03 jmcneill Exp $ */
2
3 /*-
4 * Copyright (c) 2021 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jared McNeill <jmcneill@invisible.ca>.
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: ohci_acpi.c,v 1.2 2021/12/26 14:35:03 jmcneill Exp $");
34
35 #include <sys/param.h>
36 #include <sys/bus.h>
37 #include <sys/cpu.h>
38 #include <sys/device.h>
39
40 #include <dev/usb/usb.h>
41 #include <dev/usb/usbdi.h>
42 #include <dev/usb/usbdivar.h>
43 #include <dev/usb/usb_mem.h>
44 #include <dev/usb/ohcireg.h>
45 #include <dev/usb/ohcivar.h>
46
47 #include <dev/acpi/acpireg.h>
48 #include <dev/acpi/acpivar.h>
49 #include <dev/acpi/acpi_intr.h>
50 #include <dev/acpi/acpi_usb.h>
51
52 #include <dev/pci/pcireg.h>
53
54 static int ohci_acpi_match(device_t, cfdata_t, void *);
55 static void ohci_acpi_attach(device_t, device_t, void *);
56
57 CFATTACH_DECL2_NEW(ohci_acpi, sizeof(struct ohci_softc),
58 ohci_acpi_match, ohci_acpi_attach, NULL,
59 ohci_activate, NULL, ohci_childdet);
60
61 static const struct device_compatible_entry compat_data[] = {
62 { .compat = "generic-ohci" }, /* DT link */
63 DEVICE_COMPAT_EOL
64 };
65
66 static int
ohci_acpi_match(device_t parent,cfdata_t cf,void * aux)67 ohci_acpi_match(device_t parent, cfdata_t cf, void *aux)
68 {
69 struct acpi_attach_args *aa = aux;
70 int match;
71
72 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) {
73 return 0;
74 }
75
76 match = acpi_compatible_match(aa, compat_data);
77 if (!match) {
78 match = acpi_match_class(aa->aa_node->ad_handle,
79 PCI_CLASS_SERIALBUS,
80 PCI_SUBCLASS_SERIALBUS_USB,
81 PCI_INTERFACE_OHCI);
82 }
83
84 return match;
85 }
86
87 static void
ohci_acpi_attach(device_t parent,device_t self,void * aux)88 ohci_acpi_attach(device_t parent, device_t self, void *aux)
89 {
90 struct ohci_softc * const sc = device_private(self);
91 struct acpi_attach_args *aa = aux;
92 struct acpi_resources res;
93 struct acpi_mem *mem;
94 struct acpi_irq *irq;
95 ACPI_STATUS rv;
96 int error;
97 void *ih;
98
99 sc->sc_dev = self;
100 sc->sc_bus.ub_hcpriv = sc;
101 sc->sc_bus.ub_dmatag = aa->aa_dmat;
102 sc->sc_bus.ub_revision = USBREV_1_0;
103
104 rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
105 &res, &acpi_resource_parse_ops_default);
106 if (ACPI_FAILURE(rv)) {
107 return;
108 }
109
110 mem = acpi_res_mem(&res, 0);
111 if (mem == NULL) {
112 aprint_error_dev(self, "couldn't find mem resource\n");
113 goto done;
114 }
115
116 irq = acpi_res_irq(&res, 0);
117 if (irq == NULL) {
118 aprint_error_dev(self, "couldn't find irq resource\n");
119 goto done;
120 }
121
122 sc->sc_size = mem->ar_length;
123 sc->iot = aa->aa_memt;
124 error = bus_space_map(sc->iot, mem->ar_base, mem->ar_length, 0, &sc->ioh);
125 if (error) {
126 aprint_error_dev(self, "couldn't map registers\n");
127 goto done;
128 }
129
130 /* Disable interrupts */
131 bus_space_write_4(sc->iot, sc->ioh, OHCI_INTERRUPT_DISABLE,
132 OHCI_ALL_INTRS);
133
134 ih = acpi_intr_establish(self,
135 (uint64_t)(uintptr_t)aa->aa_node->ad_handle,
136 IPL_USB, true, ohci_intr, sc, device_xname(self));
137 if (ih == NULL) {
138 aprint_error_dev(self, "couldn't establish interrupt\n");
139 goto done;
140 }
141
142 error = ohci_init(sc);
143 if (error) {
144 aprint_error_dev(self, "init failed, error = %d\n", error);
145 acpi_intr_disestablish(ih);
146 goto done;
147 }
148
149 sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint, CFARGS_NONE);
150
151 done:
152 acpi_resource_cleanup(&res);
153 }
154