at91ohci.c revision 1.9 
1/*	$Id: at91ohci.c,v 1.9 2021/08/07 16:18:43 thorpej Exp $	*/
2/*	$NetBSD: at91ohci.c,v 1.9 2021/08/07 16:18:43 thorpej Exp $	*/
3
4/*-
5 * Copyright (c) 2007 Embedtronics Oy.
6 * All rights reserved.
7 *
8 * Based on arch/arm/ep93xx/epohci.c,
9 * Copyright (c) 2004 Jesse Off
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34/*
35 * USB Open Host Controller driver.
36 *
37 * OHCI spec: ftp://ftp.compaq.com/pub/supportinformation/papers/hcir1_0a.exe
38 * USB spec: http://www.usb.org/developers/data/usb11.pdf
39 */
40
41#include <sys/cdefs.h>
42__KERNEL_RCSID(0, "$NetBSD: at91ohci.c,v 1.9 2021/08/07 16:18:43 thorpej Exp $");
43
44#include <sys/param.h>
45#include <sys/systm.h>
46#include <sys/kernel.h>
47#include <sys/device.h>
48#include <sys/proc.h>
49#include <sys/queue.h>
50
51/* busdma */
52#include <sys/mbuf.h>
53#include <uvm/uvm_extern.h>
54
55#include <sys/bus.h>
56
57#include <dev/usb/usb.h>
58#include <dev/usb/usbdi.h>
59#include <dev/usb/usbdivar.h>
60#include <dev/usb/usb_mem.h>
61
62#include <dev/usb/ohcireg.h>
63#include <dev/usb/ohcivar.h>
64
65#include <arm/at91/at91reg.h>
66#include <arm/at91/at91var.h>
67
68int at91ohci_match(device_t, cfdata_t, void *);
69void at91ohci_attach(device_t, device_t, void *);
70void at91ohci_callback(device_t );
71
72struct at91ohci_softc {
73	struct ohci_softc sc;
74	void	*sc_ih;
75	int	sc_pid;
76};
77
78CFATTACH_DECL_NEW(at91ohci, sizeof(struct at91ohci_softc),
79    at91ohci_match, at91ohci_attach, NULL, NULL);
80
81int
82at91ohci_match(device_t parent, cfdata_t match, void *aux)
83{
84	/* AT91X builtin OHCI module */
85	if (strcmp(match->cf_name, "ohci") == 0 && strcmp(match->cf_atname, "at91ohci") == 0)
86		return 2;
87	return(0);
88}
89
90void
91at91ohci_attach(device_t parent, device_t self, void *aux)
92{
93	struct at91ohci_softc *sc = device_private(self);
94	struct at91bus_attach_args *sa = aux;
95
96	sc->sc.sc_dev = self;
97	sc->sc.sc_bus.ub_hcpriv = sc;
98	sc->sc.sc_bus.ub_dmatag = sa->sa_dmat;
99	sc->sc.iot = sa->sa_iot;
100	sc->sc_pid = sa->sa_pid;
101
102	/* Map I/O space */
103	if (bus_space_map(sc->sc.iot, sa->sa_addr, sa->sa_size,
104			  0, &sc->sc.ioh)) {
105		printf(": cannot map mem space\n");
106		return;
107	}
108
109	sc->sc.sc_size = sa->sa_size;
110
111	/* enable peripheral clock */
112	at91_peripheral_clock(sc->sc_pid, 1);
113
114	printf("\n");
115
116        /* Defer the rest until later */
117        config_defer(self, at91ohci_callback);
118}
119
120void
121at91ohci_callback(device_t self)
122{
123	struct at91ohci_softc *sc = device_private(self);
124
125	/* Disable interrupts, so we don't get any spurious ones. */
126	bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
127			  OHCI_ALL_INTRS);
128
129	sc->sc_ih = at91_intr_establish(sc->sc_pid, IPL_USB, INTR_HIGH_LEVEL, ohci_intr, sc);
130	int err = ohci_init(&sc->sc);
131
132	if (err) {
133		printf("%s: init failed, error=%d\n", device_xname(self), err);
134
135		at91_intr_disestablish(sc->sc_ih);
136		return;
137	}
138
139	/* Attach usb device. */
140	sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint,
141	    CFARGS_NONE);
142}
143