ehci_arbus.c revision 1.2 
1/*	$NetBSD: ehci_arbus.c,v 1.2 2012/07/20 02:14:02 matt Exp $	*/
2
3/*-
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas of 3am Software Foundry.
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: ehci_arbus.c,v 1.2 2012/07/20 02:14:02 matt Exp $");
34
35#include "locators.h"
36
37#include <sys/param.h>
38#include <sys/bus.h>
39#include <sys/device.h>
40#include <sys/systm.h>
41
42#include <mips/atheros/include/ar9344reg.h>
43#include <mips/atheros/include/arbusvar.h>
44
45#include <dev/usb/usb.h>
46#include <dev/usb/usbdi.h>
47#include <dev/usb/usbdivar.h>
48#include <dev/usb/usb_mem.h>
49
50#include <dev/usb/ehcireg.h>
51#include <dev/usb/ehcivar.h>
52
53static int	ehci_arbus_match(device_t, cfdata_t, void *);
54static void	ehci_arbus_attach(device_t, device_t, void *);
55
56CFATTACH_DECL_NEW(ehci_arbus, sizeof (ehci_softc_t),
57    ehci_arbus_match, ehci_arbus_attach, NULL, NULL);
58
59int
60ehci_arbus_match(device_t parent, cfdata_t cf, void *aux)
61{
62	struct arbus_attach_args *aa = aux;
63
64	if (strcmp(aa->aa_name, cf->cf_name) != 0)
65		return 0;
66
67	if (badaddr((void *)MIPS_PHYS_TO_KSEG1(aa->aa_addr), 4))
68		return 0;
69
70        return 1;	/* XXX */
71}
72
73void
74ehci_arbus_attach(device_t parent, device_t self, void *aux)
75{
76	ehci_softc_t *sc = device_private(self);
77	struct arbus_attach_args * const aa = aux;
78	void *ih = NULL;
79	int error;
80	int status;
81
82	sc->iot = aa->aa_bst_le;
83	sc->sc_size = aa->aa_size;
84	//sc->sc_bus.hci_private = sc;
85	sc->sc_bus.dmatag = aa->aa_dmat;
86	sc->sc_bus.usbrev = USBREV_1_0;
87	sc->sc_flags |= EHCIF_ETTF;
88
89	error = bus_space_map(aa->aa_bst, aa->aa_addr, aa->aa_size, 0,
90	    &sc->ioh);
91
92	if (error) {
93		aprint_error(": failed to map registers: %d\n", error);
94		return;
95	}
96
97	/* The recommended value is 0x20 for both ports and the host */
98	REGVAL(AR9344_USB_CONFIG_BASE) = 0x20c00;	/* magic */
99	DELAY(1000);
100
101	/* get offset to operational regs */
102	uint32_t r = bus_space_read_4(aa->aa_bst, sc->ioh, 0);
103	if (r != 0x40) {
104		aprint_error(": error: CAPLENGTH (%#x) != 0x40\n", sc->sc_offs);
105		return;
106	}
107
108	sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH);
109
110	aprint_normal("\n");
111
112	/* Disable EHCI interrupts */
113	EOWRITE4(sc, EHCI_USBINTR, 0);
114
115	/* establish interrupt */
116	ih = arbus_intr_establish(aa->aa_cirq, aa->aa_mirq, ehci_intr, sc);
117	if (ih == NULL)
118		panic("%s: couldn't establish interrupt",
119		    device_xname(self));
120
121	/*
122	 * There are no companion controllers
123	 */
124	sc->sc_ncomp = 0;
125
126	status = ehci_init(sc);
127	if (status != USBD_NORMAL_COMPLETION) {
128		aprint_error("%s: init failed, error=%d\n", device_xname(self),
129		    status);
130		if (ih != NULL)
131			arbus_intr_disestablish(ih);
132		return;
133	}
134
135	/* Attach USB device */
136	sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint);
137}
138
139