1 #include <sys/cdefs.h>
2 __FBSDID("$FreeBSD$");
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
63 static device_probe_t uss820_atmelarm_probe;
64 static device_attach_t uss820_atmelarm_attach;
65 static device_detach_t uss820_atmelarm_detach;
66
67 static 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
79 static driver_t uss820dci_driver = {
80 .name = "uss820dci",
81 .methods = uss820dci_methods,
82 .size = sizeof(struct uss820dci_softc),
83 };
84
85 static devclass_t uss820dci_devclass;
86
87 DRIVER_MODULE(uss820dci, atmelarm, uss820dci_driver, uss820dci_devclass, 0, 0);
88 MODULE_DEPEND(uss820dci, usb, 1, 1, 1);
89
90 static const char *const uss820_desc = "USS820 USB Device Controller";
91
92 static int
uss820_atmelarm_probe(device_t dev)93 uss820_atmelarm_probe(device_t dev)
94 {
95 device_set_desc(dev, uss820_desc);
96 return (0); /* success */
97 }
98
99 static int
uss820_atmelarm_attach(device_t dev)100 uss820_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 err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_TTY | INTR_MPSAFE,
141 uss820dci_filter_interrupt, uss820dci_interrupt, sc, &sc->sc_intr_hdl);
142 if (err) {
143 sc->sc_intr_hdl = NULL;
144 goto error;
145 }
146 err = uss820dci_init(sc);
147 if (err) {
148 device_printf(dev, "Init failed\n");
149 goto error;
150 }
151 err = device_probe_and_attach(sc->sc_bus.bdev);
152 if (err) {
153 device_printf(dev, "USB probe and attach failed\n");
154 goto error;
155 }
156 return (0);
157
158 error:
159 uss820_atmelarm_detach(dev);
160 return (ENXIO);
161 }
162
163 static int
uss820_atmelarm_detach(device_t dev)164 uss820_atmelarm_detach(device_t dev)
165 {
166 struct uss820dci_softc *sc = device_get_softc(dev);
167 device_t bdev;
168 int err;
169
170 if (sc->sc_bus.bdev) {
171 bdev = sc->sc_bus.bdev;
172 device_detach(bdev);
173 device_delete_child(dev, bdev);
174 }
175 /* during module unload there are lots of children leftover */
176 device_delete_children(dev);
177
178 if (sc->sc_irq_res && sc->sc_intr_hdl) {
179 /*
180 * only call at91_udp_uninit() after at91_udp_init()
181 */
182 uss820dci_uninit(sc);
183
184 err = bus_teardown_intr(dev, sc->sc_irq_res,
185 sc->sc_intr_hdl);
186 sc->sc_intr_hdl = NULL;
187 }
188 if (sc->sc_irq_res) {
189 bus_release_resource(dev, SYS_RES_IRQ, 0,
190 sc->sc_irq_res);
191 sc->sc_irq_res = NULL;
192 }
193 if (sc->sc_io_res) {
194 bus_release_resource(dev, SYS_RES_IOPORT, 0,
195 sc->sc_io_res);
196 sc->sc_io_res = NULL;
197 }
198 usb_bus_mem_free_all(&sc->sc_bus, NULL);
199
200 return (0);
201 }
202