ohci_s3c24x0.c revision 1.8 
1/*	$NetBSD: ohci_s3c24x0.c,v 1.8 2011/07/01 20:31:39 dyoung Exp $ */
2
3/* derived from ohci_pci.c */
4
5/*
6 * Copyright (c) 1998 The NetBSD Foundation, Inc.
7 * All rights reserved.
8 *
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Lennart Augustsson (lennart@augustsson.net) at
11 * Carlstedt Research & Technology.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36__KERNEL_RCSID(0, "$NetBSD: ohci_s3c24x0.c,v 1.8 2011/07/01 20:31:39 dyoung Exp $");
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/kernel.h>
41#include <sys/device.h>
42#include <sys/proc.h>
43#include <sys/queue.h>
44
45#include <sys/bus.h>
46
47#include <arm/s3c2xx0/s3c24x0var.h>
48
49#include <dev/usb/usb.h>
50#include <dev/usb/usbdi.h>
51#include <dev/usb/usbdivar.h>
52#include <dev/usb/usb_mem.h>
53
54#include <dev/usb/ohcireg.h>
55#include <dev/usb/ohcivar.h>
56
57int	ohci_ssio_match(device_t, cfdata_t, void *);
58void	ohci_ssio_attach(device_t, device_t, void *);
59int	ohci_ssio_detach(device_t, int);
60
61extern	int ohcidebug;
62
63struct ohci_ssio_softc {
64	ohci_softc_t		sc;
65
66	void 			*sc_ih;		/* interrupt vectoring */
67};
68
69CFATTACH_DECL_NEW(ohci_ssio, sizeof(struct ohci_ssio_softc),
70    ohci_ssio_match, ohci_ssio_attach, ohci_ssio_detach, ohci_activate);
71
72int
73ohci_ssio_match(device_t parent, cfdata_t match, void *aux)
74{
75	struct s3c2xx0_attach_args *sa = (struct s3c2xx0_attach_args *)aux;
76	/* XXX: check some registers */
77
78	if (sa->sa_dmat == NULL) {
79		/* busdma tag is not initialized. */
80		return 0;
81	}
82
83	return 1;
84}
85
86void
87ohci_ssio_attach(device_t parent, device_t self, void *aux)
88{
89	struct ohci_ssio_softc *sc = device_private(self);
90	struct s3c2xx0_attach_args *sa = (struct s3c2xx0_attach_args *)aux;
91
92	usbd_status r;
93
94	aprint_normal("\n");
95	aprint_naive("\n");
96
97	sc->sc.sc_dev = self;
98	sc->sc.sc_bus.hci_private = sc;
99
100	sc->sc.iot = sa->sa_iot;
101	/*ohcidebug=15;*/
102
103	/* Map I/O registers */
104	if (bus_space_map(sc->sc.iot, sa->sa_addr, 0x5c, 0, &sc->sc.ioh)) {
105		aprint_error_dev(self, "can't map mem space\n");
106		return;
107	}
108
109	/* Disable interrupts, so we don't get any spurious ones. */
110	bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
111			  OHCI_ALL_INTRS);
112
113	sc->sc.sc_bus.dmatag = sa->sa_dmat;
114
115	/* Enable the device. */
116	/* XXX: provide clock to USB block */
117
118	/* establish the interrupt. */
119	sc->sc_ih = s3c24x0_intr_establish(sa->sa_intr, IPL_USB, IST_NONE, ohci_intr, sc);
120	if (sc->sc_ih == NULL) {
121		aprint_error_dev(self, "couldn't establish interrupt\n");
122		return;
123	}
124
125	strlcpy(sc->sc.sc_vendor, "Samsung", sizeof sc->sc.sc_vendor);
126
127	r = ohci_init(&sc->sc);
128	if (r != USBD_NORMAL_COMPLETION) {
129		aprint_error_dev(self, "init failed, error=%d\n", r);
130		return;
131	}
132
133	/* Attach usb device. */
134	sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint);
135}
136
137int
138ohci_ssio_detach(device_t self, int flags)
139{
140	return (0);
141}
142