1/*	$OpenBSD: ohci_acpi.c,v 1.2 2022/04/06 18:59:27 naddy 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
39struct 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
46int	ohci_acpi_match(struct device *, void *, void *);
47void	ohci_acpi_attach(struct device *, struct device *, void *);
48
49const struct cfattach ohci_acpi_ca = {
50	sizeof(struct ohci_acpi_softc), ohci_acpi_match, ohci_acpi_attach
51};
52
53void	ohci_acpi_attach_deferred(struct device *);
54
55int
56ohci_acpi_match(struct device *parent, void *match, void *aux)
57{
58	struct acpi_attach_args *aaa = aux;
59
60	return acpi_matchcls(aaa, PCI_CLASS_SERIALBUS,
61	    PCI_SUBCLASS_SERIALBUS_USB, PCI_INTERFACE_OHCI);
62}
63
64void
65ohci_acpi_attach(struct device *parent, struct device *self, void *aux)
66{
67	struct ohci_acpi_softc *sc = (struct ohci_acpi_softc *)self;
68	struct acpi_attach_args *aaa = aux;
69
70	sc->sc_acpi = (struct acpi_softc *)parent;
71	sc->sc_node = aaa->aaa_node;
72	printf(" %s", sc->sc_node->name);
73
74	printf(" addr 0x%llx/0x%llx", aaa->aaa_addr[0], aaa->aaa_size[0]);
75	printf(" irq %d", aaa->aaa_irq[0]);
76
77	sc->sc.iot = aaa->aaa_bst[0];
78	sc->sc.sc_size = aaa->aaa_size[0];
79	sc->sc.sc_bus.dmatag = aaa->aaa_dmat;
80
81	if (bus_space_map(sc->sc.iot, aaa->aaa_addr[0], aaa->aaa_size[0],
82	    0, &sc->sc.ioh)) {
83		printf(": can't map registers\n");
84		return;
85	}
86
87	/* Record what interrupts were enabled by SMM/BIOS. */
88	sc->sc.sc_intre = bus_space_read_4(sc->sc.iot, sc->sc.ioh,
89	    OHCI_INTERRUPT_ENABLE);
90
91	/* Disable interrupts, so we don't get any spurious ones. */
92	bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
93	    OHCI_MIE);
94
95	bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
96	    BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
97	bus_space_write_4(sc->sc.iot, sc->sc.ioh,
98	    OHCI_INTERRUPT_DISABLE, OHCI_MIE);
99
100	/* Map and establish the interrupt. */
101	sc->sc_ih = acpi_intr_establish(aaa->aaa_irq[0], aaa->aaa_irq_flags[0],
102	    IPL_USB, ohci_intr, sc, sc->sc.sc_bus.bdev.dv_xname);
103	if (sc->sc_ih == NULL) {
104		printf(": can't establish interrupt\n");
105		goto unmap;
106	}
107
108	printf(": ");
109
110	strlcpy(sc->sc.sc_vendor, "Generic", sizeof(sc->sc.sc_vendor));
111
112	/* Display revision and perform legacy emulation handover. */
113	if (ohci_checkrev(&sc->sc) != USBD_NORMAL_COMPLETION ||
114	    ohci_handover(&sc->sc) != USBD_NORMAL_COMPLETION)
115		goto disestablish_ret;
116
117	/* Ignore interrupts for now */
118	sc->sc.sc_bus.dying = 1;
119
120	config_defer(self, ohci_acpi_attach_deferred);
121	return;
122
123disestablish_ret:
124	acpi_intr_disestablish(sc->sc_ih);
125unmap:
126	bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
127	return;
128}
129
130void
131ohci_acpi_attach_deferred(struct device *self)
132{
133	struct ohci_acpi_softc *sc = (struct ohci_acpi_softc *)self;
134	usbd_status r;
135	int s;
136
137	s = splusb();
138	sc->sc.sc_bus.dying = 0;
139	r = ohci_init(&sc->sc);
140	splx(s);
141
142	if (r != USBD_NORMAL_COMPLETION) {
143		printf("%s: init failed, error=%d\n",
144		    sc->sc.sc_bus.bdev.dv_xname, r);
145		acpi_intr_disestablish(sc->sc_ih);
146		sc->sc_ih = NULL;
147		bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
148		sc->sc.sc_size = 0;
149		return;
150	}
151
152	/* Attach usb device. */
153	config_found(self, &sc->sc.sc_bus, usbctlprint);
154}
155