uss820dci_atmelarm.c revision 190183 
1#include <sys/cdefs.h>
2__FBSDID("$FreeBSD: head/sys/dev/usb/controller/uss820dci_atmelarm.c 190183 2009-03-20 21:57:54Z thompsa $");
3
4/*-
5 * Copyright (c) 2008 Hans Petter Selasky <hselasky@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <dev/usb/usb_mfunc.h>
31#include <dev/usb/usb.h>
32
33#include <dev/usb/usb_core.h>
34#include <dev/usb/usb_busdma.h>
35#include <dev/usb/usb_process.h>
36#include <dev/usb/usb_sw_transfer.h>
37#include <dev/usb/usb_util.h>
38
39#include <dev/usb/usb_controller.h>
40#include <dev/usb/usb_bus.h>
41#include <dev/usb/controller/uss820dci.h>
42
43#include <sys/rman.h>
44
45static device_probe_t uss820_atmelarm_probe;
46static device_attach_t uss820_atmelarm_attach;
47static device_detach_t uss820_atmelarm_detach;
48static device_suspend_t uss820_atmelarm_suspend;
49static device_resume_t uss820_atmelarm_resume;
50static device_shutdown_t uss820_atmelarm_shutdown;
51
52static device_method_t uss820dci_methods[] = {
53	/* Device interface */
54	DEVMETHOD(device_probe, uss820_atmelarm_probe),
55	DEVMETHOD(device_attach, uss820_atmelarm_attach),
56	DEVMETHOD(device_detach, uss820_atmelarm_detach),
57	DEVMETHOD(device_suspend, uss820_atmelarm_suspend),
58	DEVMETHOD(device_resume, uss820_atmelarm_resume),
59	DEVMETHOD(device_shutdown, uss820_atmelarm_shutdown),
60
61	/* Bus interface */
62	DEVMETHOD(bus_print_child, bus_generic_print_child),
63
64	{0, 0}
65};
66
67static driver_t uss820dci_driver = {
68	.name = "uss820",
69	.methods = uss820dci_methods,
70	.size = sizeof(struct uss820dci_softc),
71};
72
73static devclass_t uss820dci_devclass;
74
75DRIVER_MODULE(uss820, atmelarm, uss820dci_driver, uss820dci_devclass, 0, 0);
76MODULE_DEPEND(uss820, usb, 1, 1, 1);
77
78static const char *const uss820_desc = "USS820 USB Device Controller";
79
80static int
81uss820_atmelarm_suspend(device_t dev)
82{
83	struct uss820dci_softc *sc = device_get_softc(dev);
84	int err;
85
86	err = bus_generic_suspend(dev);
87	if (err == 0) {
88		uss820dci_suspend(sc);
89	}
90	return (err);
91}
92
93static int
94uss820_atmelarm_resume(device_t dev)
95{
96	struct uss820dci_softc *sc = device_get_softc(dev);
97	int err;
98
99	uss820dci_resume(sc);
100
101	err = bus_generic_resume(dev);
102
103	return (err);
104}
105
106static int
107uss820_atmelarm_shutdown(device_t dev)
108{
109	struct uss820dci_softc *sc = device_get_softc(dev);
110	int err;
111
112	err = bus_generic_shutdown(dev);
113	if (err)
114		return (err);
115
116	uss820dci_uninit(sc);
117
118	return (0);
119}
120
121static int
122uss820_atmelarm_probe(device_t dev)
123{
124	device_set_desc(dev, uss820_desc);
125	return (0);			/* success */
126}
127
128static int
129uss820_atmelarm_attach(device_t dev)
130{
131	struct uss820dci_softc *sc = device_get_softc(dev);
132	int err;
133	int rid;
134
135	/* initialise some bus fields */
136	sc->sc_bus.parent = dev;
137	sc->sc_bus.devices = sc->sc_devices;
138	sc->sc_bus.devices_max = USS820_MAX_DEVICES;
139
140	/* get all DMA memory */
141	if (usb2_bus_mem_alloc_all(&sc->sc_bus,
142	    USB_GET_DMA_TAG(dev), NULL)) {
143		return (ENOMEM);
144	}
145	rid = 0;
146	sc->sc_io_res =
147	    bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
148
149	if (!sc->sc_io_res) {
150		goto error;
151	}
152	sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
153	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
154	sc->sc_io_size = rman_get_size(sc->sc_io_res);
155
156	/* multiply all addresses by 4 */
157	sc->sc_reg_shift = 2;
158
159	rid = 0;
160	sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
161	    RF_SHAREABLE | RF_ACTIVE);
162	if (sc->sc_irq_res == NULL) {
163		goto error;
164	}
165	sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
166	if (!(sc->sc_bus.bdev)) {
167		goto error;
168	}
169	device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
170
171#if (__FreeBSD_version >= 700031)
172	err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
173	    NULL, (driver_intr_t *)uss820dci_interrupt, sc, &sc->sc_intr_hdl);
174#else
175	err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
176	    (driver_intr_t *)uss820dci_interrupt, sc, &sc->sc_intr_hdl);
177#endif
178	if (err) {
179		sc->sc_intr_hdl = NULL;
180		goto error;
181	}
182	err = uss820dci_init(sc);
183	if (err) {
184		device_printf(dev, "Init failed\n");
185		goto error;
186	}
187	err = device_probe_and_attach(sc->sc_bus.bdev);
188	if (err) {
189		device_printf(dev, "USB probe and attach failed\n");
190		goto error;
191	}
192	return (0);
193
194error:
195	uss820_atmelarm_detach(dev);
196	return (ENXIO);
197}
198
199static int
200uss820_atmelarm_detach(device_t dev)
201{
202	struct uss820dci_softc *sc = device_get_softc(dev);
203	device_t bdev;
204	int err;
205
206	if (sc->sc_bus.bdev) {
207		bdev = sc->sc_bus.bdev;
208		device_detach(bdev);
209		device_delete_child(dev, bdev);
210	}
211	/* during module unload there are lots of children leftover */
212	device_delete_all_children(dev);
213
214	if (sc->sc_irq_res && sc->sc_intr_hdl) {
215		/*
216		 * only call at91_udp_uninit() after at91_udp_init()
217		 */
218		uss820dci_uninit(sc);
219
220		err = bus_teardown_intr(dev, sc->sc_irq_res,
221		    sc->sc_intr_hdl);
222		sc->sc_intr_hdl = NULL;
223	}
224	if (sc->sc_irq_res) {
225		bus_release_resource(dev, SYS_RES_IRQ, 0,
226		    sc->sc_irq_res);
227		sc->sc_irq_res = NULL;
228	}
229	if (sc->sc_io_res) {
230		bus_release_resource(dev, SYS_RES_IOPORT, 0,
231		    sc->sc_io_res);
232		sc->sc_io_res = NULL;
233	}
234	usb2_bus_mem_free_all(&sc->sc_bus, NULL);
235
236	return (0);
237}
238