uss820dci_atmelarm.c revision 278278 
1#include <sys/cdefs.h>
2__FBSDID("$FreeBSD: stable/10/sys/dev/usb/controller/uss820dci_atmelarm.c 278278 2015-02-05 20:03:02Z hselasky $");
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 <sys/stdint.h>
31#include <sys/stddef.h>
32#include <sys/param.h>
33#include <sys/queue.h>
34#include <sys/types.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/bus.h>
38#include <sys/module.h>
39#include <sys/lock.h>
40#include <sys/mutex.h>
41#include <sys/condvar.h>
42#include <sys/sysctl.h>
43#include <sys/sx.h>
44#include <sys/unistd.h>
45#include <sys/callout.h>
46#include <sys/malloc.h>
47#include <sys/priv.h>
48
49#include <dev/usb/usb.h>
50#include <dev/usb/usbdi.h>
51
52#include <dev/usb/usb_core.h>
53#include <dev/usb/usb_busdma.h>
54#include <dev/usb/usb_process.h>
55#include <dev/usb/usb_util.h>
56
57#include <dev/usb/usb_controller.h>
58#include <dev/usb/usb_bus.h>
59#include <dev/usb/controller/uss820dci.h>
60
61#include <sys/rman.h>
62
63static device_probe_t uss820_atmelarm_probe;
64static device_attach_t uss820_atmelarm_attach;
65static device_detach_t uss820_atmelarm_detach;
66
67static device_method_t uss820dci_methods[] = {
68	/* Device interface */
69	DEVMETHOD(device_probe, uss820_atmelarm_probe),
70	DEVMETHOD(device_attach, uss820_atmelarm_attach),
71	DEVMETHOD(device_detach, uss820_atmelarm_detach),
72	DEVMETHOD(device_suspend, bus_generic_suspend),
73	DEVMETHOD(device_resume, bus_generic_resume),
74	DEVMETHOD(device_shutdown, bus_generic_shutdown),
75
76	DEVMETHOD_END
77};
78
79static driver_t uss820dci_driver = {
80	.name = "uss820dci",
81	.methods = uss820dci_methods,
82	.size = sizeof(struct uss820dci_softc),
83};
84
85static devclass_t uss820dci_devclass;
86
87DRIVER_MODULE(uss820dci, atmelarm, uss820dci_driver, uss820dci_devclass, 0, 0);
88MODULE_DEPEND(uss820dci, usb, 1, 1, 1);
89
90static const char *const uss820_desc = "USS820 USB Device Controller";
91
92static int
93uss820_atmelarm_probe(device_t dev)
94{
95	device_set_desc(dev, uss820_desc);
96	return (0);			/* success */
97}
98
99static int
100uss820_atmelarm_attach(device_t dev)
101{
102	struct uss820dci_softc *sc = device_get_softc(dev);
103	int err;
104	int rid;
105
106	/* initialise some bus fields */
107	sc->sc_bus.parent = dev;
108	sc->sc_bus.devices = sc->sc_devices;
109	sc->sc_bus.devices_max = USS820_MAX_DEVICES;
110	sc->sc_bus.dma_bits = 32;
111
112	/* get all DMA memory */
113	if (usb_bus_mem_alloc_all(&sc->sc_bus,
114	    USB_GET_DMA_TAG(dev), NULL)) {
115		return (ENOMEM);
116	}
117	rid = 0;
118	sc->sc_io_res =
119	    bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
120
121	if (!sc->sc_io_res) {
122		goto error;
123	}
124	sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
125	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
126	sc->sc_io_size = rman_get_size(sc->sc_io_res);
127
128	rid = 0;
129	sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
130	    RF_SHAREABLE | RF_ACTIVE);
131	if (sc->sc_irq_res == NULL) {
132		goto error;
133	}
134	sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
135	if (!(sc->sc_bus.bdev)) {
136		goto error;
137	}
138	device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
139
140#if (__FreeBSD_version >= 700031)
141	err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
142	    NULL, (driver_intr_t *)uss820dci_interrupt, sc, &sc->sc_intr_hdl);
143#else
144	err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
145	    (driver_intr_t *)uss820dci_interrupt, sc, &sc->sc_intr_hdl);
146#endif
147	if (err) {
148		sc->sc_intr_hdl = NULL;
149		goto error;
150	}
151	err = uss820dci_init(sc);
152	if (err) {
153		device_printf(dev, "Init failed\n");
154		goto error;
155	}
156	err = device_probe_and_attach(sc->sc_bus.bdev);
157	if (err) {
158		device_printf(dev, "USB probe and attach failed\n");
159		goto error;
160	}
161	return (0);
162
163error:
164	uss820_atmelarm_detach(dev);
165	return (ENXIO);
166}
167
168static int
169uss820_atmelarm_detach(device_t dev)
170{
171	struct uss820dci_softc *sc = device_get_softc(dev);
172	device_t bdev;
173	int err;
174
175	if (sc->sc_bus.bdev) {
176		bdev = sc->sc_bus.bdev;
177		device_detach(bdev);
178		device_delete_child(dev, bdev);
179	}
180	/* during module unload there are lots of children leftover */
181	device_delete_children(dev);
182
183	if (sc->sc_irq_res && sc->sc_intr_hdl) {
184		/*
185		 * only call at91_udp_uninit() after at91_udp_init()
186		 */
187		uss820dci_uninit(sc);
188
189		err = bus_teardown_intr(dev, sc->sc_irq_res,
190		    sc->sc_intr_hdl);
191		sc->sc_intr_hdl = NULL;
192	}
193	if (sc->sc_irq_res) {
194		bus_release_resource(dev, SYS_RES_IRQ, 0,
195		    sc->sc_irq_res);
196		sc->sc_irq_res = NULL;
197	}
198	if (sc->sc_io_res) {
199		bus_release_resource(dev, SYS_RES_IOPORT, 0,
200		    sc->sc_io_res);
201		sc->sc_io_res = NULL;
202	}
203	usb_bus_mem_free_all(&sc->sc_bus, NULL);
204
205	return (0);
206}
207