1 /* $OpenBSD: ohci_acpi.c,v 1.3 2024/10/09 00:38:25 jsg Exp $ */
2 /*
3 * Copyright (c) 2018 Mark Kettenis
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <sys/param.h>
19 #include <sys/systm.h>
20 #include <sys/device.h>
21
22 #include <machine/bus.h>
23 #include <machine/intr.h>
24
25 #include <dev/acpi/acpireg.h>
26 #include <dev/acpi/acpivar.h>
27 #include <dev/acpi/acpidev.h>
28 #include <dev/acpi/amltypes.h>
29 #include <dev/acpi/dsdt.h>
30
31 #include <dev/usb/usb.h>
32 #include <dev/usb/usbdi.h>
33 #include <dev/usb/usbdivar.h>
34 #include <dev/usb/usb_mem.h>
35
36 #include <dev/usb/ohcireg.h>
37 #include <dev/usb/ohcivar.h>
38
39 struct ohci_acpi_softc {
40 struct ohci_softc sc;
41 struct acpi_softc *sc_acpi;
42 struct aml_node *sc_node;
43 void *sc_ih;
44 };
45
46 int ohci_acpi_match(struct device *, void *, void *);
47 void ohci_acpi_attach(struct device *, struct device *, void *);
48
49 const struct cfattach ohci_acpi_ca = {
50 sizeof(struct ohci_acpi_softc), ohci_acpi_match, ohci_acpi_attach,
51 NULL, ohci_activate
52 };
53
54 void ohci_acpi_attach_deferred(struct device *);
55
56 int
ohci_acpi_match(struct device * parent,void * match,void * aux)57 ohci_acpi_match(struct device *parent, void *match, void *aux)
58 {
59 struct acpi_attach_args *aaa = aux;
60
61 return acpi_matchcls(aaa, PCI_CLASS_SERIALBUS,
62 PCI_SUBCLASS_SERIALBUS_USB, PCI_INTERFACE_OHCI);
63 }
64
65 void
ohci_acpi_attach(struct device * parent,struct device * self,void * aux)66 ohci_acpi_attach(struct device *parent, struct device *self, void *aux)
67 {
68 struct ohci_acpi_softc *sc = (struct ohci_acpi_softc *)self;
69 struct acpi_attach_args *aaa = aux;
70
71 sc->sc_acpi = (struct acpi_softc *)parent;
72 sc->sc_node = aaa->aaa_node;
73 printf(" %s", sc->sc_node->name);
74
75 printf(" addr 0x%llx/0x%llx", aaa->aaa_addr[0], aaa->aaa_size[0]);
76 printf(" irq %d", aaa->aaa_irq[0]);
77
78 sc->sc.iot = aaa->aaa_bst[0];
79 sc->sc.sc_size = aaa->aaa_size[0];
80 sc->sc.sc_bus.dmatag = aaa->aaa_dmat;
81
82 if (bus_space_map(sc->sc.iot, aaa->aaa_addr[0], aaa->aaa_size[0],
83 0, &sc->sc.ioh)) {
84 printf(": can't map registers\n");
85 return;
86 }
87
88 /* Record what interrupts were enabled by SMM/BIOS. */
89 sc->sc.sc_intre = bus_space_read_4(sc->sc.iot, sc->sc.ioh,
90 OHCI_INTERRUPT_ENABLE);
91
92 /* Disable interrupts, so we don't get any spurious ones. */
93 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
94 OHCI_MIE);
95
96 bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
97 BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
98 bus_space_write_4(sc->sc.iot, sc->sc.ioh,
99 OHCI_INTERRUPT_DISABLE, OHCI_MIE);
100
101 /* Map and establish the interrupt. */
102 sc->sc_ih = acpi_intr_establish(aaa->aaa_irq[0], aaa->aaa_irq_flags[0],
103 IPL_USB, ohci_intr, sc, sc->sc.sc_bus.bdev.dv_xname);
104 if (sc->sc_ih == NULL) {
105 printf(": can't establish interrupt\n");
106 goto unmap;
107 }
108
109 printf(": ");
110
111 strlcpy(sc->sc.sc_vendor, "Generic", sizeof(sc->sc.sc_vendor));
112
113 /* Display revision and perform legacy emulation handover. */
114 if (ohci_checkrev(&sc->sc) != USBD_NORMAL_COMPLETION ||
115 ohci_handover(&sc->sc) != USBD_NORMAL_COMPLETION)
116 goto disestablish_ret;
117
118 /* Ignore interrupts for now */
119 sc->sc.sc_bus.dying = 1;
120
121 config_defer(self, ohci_acpi_attach_deferred);
122 return;
123
124 disestablish_ret:
125 acpi_intr_disestablish(sc->sc_ih);
126 unmap:
127 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
128 return;
129 }
130
131 void
ohci_acpi_attach_deferred(struct device * self)132 ohci_acpi_attach_deferred(struct device *self)
133 {
134 struct ohci_acpi_softc *sc = (struct ohci_acpi_softc *)self;
135 usbd_status r;
136 int s;
137
138 s = splusb();
139 sc->sc.sc_bus.dying = 0;
140 r = ohci_init(&sc->sc);
141 splx(s);
142
143 if (r != USBD_NORMAL_COMPLETION) {
144 printf("%s: init failed, error=%d\n",
145 sc->sc.sc_bus.bdev.dv_xname, r);
146 acpi_intr_disestablish(sc->sc_ih);
147 sc->sc_ih = NULL;
148 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
149 sc->sc.sc_size = 0;
150 return;
151 }
152
153 /* Attach usb device. */
154 config_found(self, &sc->sc.sc_bus, usbctlprint);
155 }
156