atmegadci_atmelarm.c revision 190755 
1#include <sys/cdefs.h>
2__FBSDID("$FreeBSD: head/sys/dev/usb/controller/atmegadci_atmelarm.c 190755 2009-04-06 00:32:54Z thompsa $");
3
4/*-
5 * Copyright (c) 2009 Hans Petter Selasky. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <dev/usb/usb.h>
30
31#include <dev/usb/usb_core.h>
32#include <dev/usb/usb_busdma.h>
33#include <dev/usb/usb_process.h>
34#include <dev/usb/usb_util.h>
35
36#include <dev/usb/usb_controller.h>
37#include <dev/usb/usb_bus.h>
38#include <dev/usb/controller/atmegadci.h>
39
40#include <sys/rman.h>
41
42static device_probe_t atmegadci_probe;
43static device_attach_t atmegadci_attach;
44static device_detach_t atmegadci_detach;
45static device_shutdown_t atmegadci_shutdown;
46
47struct atmegadci_super_softc {
48	struct atmegadci_softc sc_otg;	/* must be first */
49};
50
51static void
52atmegadci_clocks_on(struct usb2_bus *bus)
53{
54	/* TODO */
55}
56
57static void
58atmegadci_clocks_off(struct usb2_bus *bus)
59{
60	/* TODO */
61}
62
63static int
64atmegadci_probe(device_t dev)
65{
66	device_set_desc(dev, "ATMEL OTG integrated USB controller");
67	return (0);
68}
69
70static int
71atmegadci_attach(device_t dev)
72{
73	struct atmegadci_super_softc *sc = device_get_softc(dev);
74	int err;
75	int rid;
76
77	/* setup MUSB OTG USB controller interface softc */
78	sc->sc_otg.sc_clocks_on = &atmegadci_clocks_on;
79	sc->sc_otg.sc_clocks_off = &atmegadci_clocks_off;
80
81	/* initialise some bus fields */
82	sc->sc_otg.sc_bus.parent = dev;
83	sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices;
84	sc->sc_otg.sc_bus.devices_max = ATMEGA_MAX_DEVICES;
85
86	/* get all DMA memory */
87	if (usb2_bus_mem_alloc_all(&sc->sc_otg.sc_bus,
88	    USB_GET_DMA_TAG(dev), NULL)) {
89		return (ENOMEM);
90	}
91	rid = 0;
92	sc->sc_otg.sc_io_res =
93	    bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
94
95	if (!(sc->sc_otg.sc_io_res)) {
96		err = ENOMEM;
97		goto error;
98	}
99	sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res);
100	sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res);
101
102	rid = 0;
103	sc->sc_otg.sc_irq_res =
104	    bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
105	if (!(sc->sc_otg.sc_irq_res)) {
106		goto error;
107	}
108	sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1);
109	if (!(sc->sc_otg.sc_bus.bdev)) {
110		goto error;
111	}
112	device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus);
113
114	err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
115	    NULL, (driver_intr_t *)atmegadci_interrupt, sc, &sc->sc_otg.sc_intr_hdl);
116	if (err) {
117		sc->sc_otg.sc_intr_hdl = NULL;
118		goto error;
119	}
120	err = atmegadci_init(&sc->sc_otg);
121	if (!err) {
122		err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev);
123	}
124	if (err) {
125		goto error;
126	}
127	return (0);
128
129error:
130	atmegadci_detach(dev);
131	return (ENXIO);
132}
133
134static int
135atmegadci_detach(device_t dev)
136{
137	struct atmegadci_super_softc *sc = device_get_softc(dev);
138	device_t bdev;
139	int err;
140
141	if (sc->sc_otg.sc_bus.bdev) {
142		bdev = sc->sc_otg.sc_bus.bdev;
143		device_detach(bdev);
144		device_delete_child(dev, bdev);
145	}
146	/* during module unload there are lots of children leftover */
147	device_delete_all_children(dev);
148
149	if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) {
150		/*
151		 * only call atmegadci_uninit() after atmegadci_init()
152		 */
153		atmegadci_uninit(&sc->sc_otg);
154
155		err = bus_teardown_intr(dev, sc->sc_otg.sc_irq_res,
156		    sc->sc_otg.sc_intr_hdl);
157		sc->sc_otg.sc_intr_hdl = NULL;
158	}
159	/* free IRQ channel, if any */
160	if (sc->sc_otg.sc_irq_res) {
161		bus_release_resource(dev, SYS_RES_IRQ, 0,
162		    sc->sc_otg.sc_irq_res);
163		sc->sc_otg.sc_irq_res = NULL;
164	}
165	/* free memory resource, if any */
166	if (sc->sc_otg.sc_io_res) {
167		bus_release_resource(dev, SYS_RES_MEMORY, 0,
168		    sc->sc_otg.sc_io_res);
169		sc->sc_otg.sc_io_res = NULL;
170	}
171	usb2_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL);
172
173	return (0);
174}
175
176static int
177atmegadci_shutdown(device_t dev)
178{
179	struct atmegadci_super_softc *sc = device_get_softc(dev);
180	int err;
181
182	err = bus_generic_shutdown(dev);
183	if (err)
184		return (err);
185
186	atmegadci_uninit(&sc->sc_otg);
187
188	return (0);
189}
190
191static device_method_t atmegadci_methods[] = {
192	/* Device interface */
193	DEVMETHOD(device_probe, atmegadci_probe),
194	DEVMETHOD(device_attach, atmegadci_attach),
195	DEVMETHOD(device_detach, atmegadci_detach),
196	DEVMETHOD(device_shutdown, atmegadci_shutdown),
197
198	/* Bus interface */
199	DEVMETHOD(bus_print_child, bus_generic_print_child),
200
201	{0, 0}
202};
203
204static driver_t atmegadci_driver = {
205	"atmegadci",
206	atmegadci_methods,
207	sizeof(struct atmegadci_super_softc),
208};
209
210static devclass_t atmegadci_devclass;
211
212DRIVER_MODULE(atmegadci, atmelarm, atmegadci_driver, atmegadci_devclass, 0, 0);
213MODULE_DEPEND(atmegadci, usb, 1, 1, 1);
214