1 /*-
2 * Copyright (C) 2009 Yohanes Nugroho <yohanes@gmail.com>
3 * based on ehci_mbus.c
4 * Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
5 * All rights reserved.
6 *
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 * 3. Neither the name of MARVELL nor the names of contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
36
37 #include "opt_bus.h"
38
39 #include <machine/resource.h>
40
41 #include <sys/stdint.h>
42 #include <sys/stddef.h>
43 #include <sys/param.h>
44 #include <sys/queue.h>
45 #include <sys/types.h>
46 #include <sys/systm.h>
47 #include <sys/kernel.h>
48 #include <sys/bus.h>
49 #include <sys/module.h>
50 #include <sys/lock.h>
51 #include <sys/mutex.h>
52 #include <sys/condvar.h>
53 #include <sys/sysctl.h>
54 #include <sys/sx.h>
55 #include <sys/unistd.h>
56 #include <sys/callout.h>
57 #include <sys/malloc.h>
58 #include <sys/priv.h>
59
60 #include <sys/rman.h>
61
62 #include <dev/usb/usb.h>
63 #include <dev/usb/usbdi.h>
64
65 #include <dev/usb/usb_core.h>
66 #include <dev/usb/usb_busdma.h>
67 #include <dev/usb/usb_process.h>
68 #include <dev/usb/usb_util.h>
69
70 #include <dev/usb/usb_controller.h>
71 #include <dev/usb/usb_bus.h>
72 #include <dev/usb/controller/ehci.h>
73 #include <dev/usb/controller/ehcireg.h>
74
75
76 static device_attach_t ehci_ebus_attach;
77 static device_detach_t ehci_ebus_detach;
78
79 static void *ih_err;
80
81 #define EHCI_HC_DEVSTR "CNS11XX USB EHCI"
82 #define USB_BRIDGE_INTR_MASK 0x214
83
84 static int
85 ehci_ebus_probe(device_t self)
86 {
87
88 device_set_desc(self, EHCI_HC_DEVSTR);
89
90 return (BUS_PROBE_DEFAULT);
91 }
92
93 static int
94 ehci_ebus_attach(device_t self)
95 {
96 ehci_softc_t *sc = device_get_softc(self);
97 bus_space_handle_t bsh;
98 int err;
99 int rid;
100
101 /* initialise some bus fields */
102 sc->sc_bus.parent = self;
103 sc->sc_bus.devices = sc->sc_devices;
104 sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
105 sc->sc_bus.dma_bits = 32;
106
107 /* get all DMA memory */
108 if (usb_bus_mem_alloc_all(&sc->sc_bus,
109 USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
110 return (ENOMEM);
111 }
112
113 sc->sc_bus.usbrev = USB_REV_2_0;
114
115 rid = 0;
116 sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY,
117 &rid, RF_ACTIVE);
118 if (!sc->sc_io_res) {
119 device_printf(self, "Could not map memory\n");
120 goto error;
121 }
122 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
123 bsh = rman_get_bushandle(sc->sc_io_res);
124
125 /*magic, undocumented initialization*/
126 bus_space_write_4((sc)->sc_io_tag, bsh, 0x04, 0x106);
127
128 bus_space_write_4((sc)->sc_io_tag, bsh, 0x40, (3 << 5)|0x2000);
129
130 DELAY(1000);
131
132 sc->sc_io_size = 4096;
133
134 if (bus_space_subregion(sc->sc_io_tag, bsh, 0x4000000,
135 sc->sc_io_size, &sc->sc_io_hdl) != 0)
136 panic("%s: unable to subregion USB host registers",
137 device_get_name(self));
138
139 rid = 0;
140 sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
141 RF_SHAREABLE | RF_ACTIVE);
142 if (sc->sc_irq_res == NULL) {
143 device_printf(self, "Could not allocate irq\n");
144 ehci_ebus_detach(self);
145 return (ENXIO);
146 }
147
148 sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
149 if (!sc->sc_bus.bdev) {
150 device_printf(self, "Could not add USB device\n");
151 goto error;
152 }
153 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
154 device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);
155
156 sprintf(sc->sc_vendor, "Cavium");
157
158 err = bus_setup_intr(self,sc->sc_irq_res,
159 INTR_TYPE_BIO | INTR_MPSAFE, NULL,
160 (driver_intr_t *)ehci_interrupt, sc,
161 &sc->sc_intr_hdl);
162 if (err) {
163 device_printf(self, "Could not setup error irq, %d\n", err);
164 ih_err = NULL;
165 goto error;
166 }
167
168 err = ehci_init(sc);
169 if (!err) {
170 err = device_probe_and_attach(sc->sc_bus.bdev);
171 }
172 if (err) {
173 device_printf(self, "USB init failed err=%d\n", err);
174 goto error;
175 }
176 return (0);
177
178 error:
179 ehci_ebus_detach(self);
180 return (ENXIO);
181 }
182
183 static int
184 ehci_ebus_detach(device_t self)
185 {
186 ehci_softc_t *sc = device_get_softc(self);
187 device_t bdev;
188 int err;
189
190 if (sc->sc_bus.bdev) {
191 bdev = sc->sc_bus.bdev;
192 device_detach(bdev);
193 device_delete_child(self, bdev);
194 }
195 /* during module unload there are lots of children leftover */
196 device_delete_children(self);
197
198 /*
199 * disable interrupts that might have been switched on in
200 * ehci_ebus_attach()
201 */
202 if (sc->sc_io_res) {
203 EWRITE4(sc, USB_BRIDGE_INTR_MASK, 0);
204 }
205 if (sc->sc_irq_res && sc->sc_intr_hdl) {
206 /*
207 * only call ehci_detach() after ehci_init()
208 */
209 ehci_detach(sc);
210
211 err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
212
213 if (err)
214 /* XXX or should we panic? */
215 device_printf(self, "Could not tear down irq, %d\n",
216 err);
217 sc->sc_intr_hdl = NULL;
218 }
219 if (sc->sc_irq_res) {
220 bus_release_resource(self, SYS_RES_IRQ, 1, sc->sc_irq_res);
221 sc->sc_irq_res = NULL;
222 }
223 if (sc->sc_io_res) {
224 bus_release_resource(self, SYS_RES_MEMORY, 0,
225 sc->sc_io_res);
226 sc->sc_io_res = NULL;
227 }
228 usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
229
230 return (0);
231 }
232
233 static device_method_t ehci_methods[] = {
234 /* Device interface */
235 DEVMETHOD(device_probe, ehci_ebus_probe),
236 DEVMETHOD(device_attach, ehci_ebus_attach),
237 DEVMETHOD(device_detach, ehci_ebus_detach),
238 DEVMETHOD(device_suspend, bus_generic_suspend),
239 DEVMETHOD(device_resume, bus_generic_resume),
240 DEVMETHOD(device_shutdown, bus_generic_shutdown),
241
242 DEVMETHOD_END
243 };
244
245 static driver_t ehci_driver = {
246 .name = "ehci",
247 .methods = ehci_methods,
248 .size = sizeof(ehci_softc_t),
249 };
250
251 static devclass_t ehci_devclass;
252
253 DRIVER_MODULE(ehci, econaarm, ehci_driver, ehci_devclass, 0, 0);
254 MODULE_DEPEND(ehci, usb, 1, 1, 1);
Cache object: fba71e8b0070c70ec2467709f3387b46
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