tegra_ehci.c revision 1.1.2.2 1 /* $NetBSD: tegra_ehci.c,v 1.1.2.2 2015/04/06 15:17:53 skrll Exp $ */
2
3 /*-
4 * Copyright (c) 2015 Jared D. McNeill <jmcneill (at) invisible.ca>
5 * 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 ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * 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 "locators.h"
30
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: tegra_ehci.c,v 1.1.2.2 2015/04/06 15:17:53 skrll Exp $");
33
34 #include <sys/param.h>
35 #include <sys/bus.h>
36 #include <sys/device.h>
37 #include <sys/intr.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40
41 #include <dev/usb/usb.h>
42 #include <dev/usb/usbdi.h>
43 #include <dev/usb/usbdivar.h>
44 #include <dev/usb/usb_mem.h>
45 #include <dev/usb/ehcireg.h>
46 #include <dev/usb/ehcivar.h>
47
48 #include <arm/nvidia/tegra_var.h>
49
50 static int tegra_ehci_match(device_t, cfdata_t, void *);
51 static void tegra_ehci_attach(device_t, device_t, void *);
52
53 struct tegra_ehci_softc {
54 struct ehci_softc sc;
55 void *sc_ih;
56 };
57
58 CFATTACH_DECL2_NEW(tegra_ehci, sizeof(struct tegra_ehci_softc),
59 tegra_ehci_match, tegra_ehci_attach, NULL,
60 ehci_activate, NULL, ehci_childdet);
61
62 static int
63 tegra_ehci_match(device_t parent, cfdata_t cf, void *aux)
64 {
65 return 1;
66 }
67
68 static void
69 tegra_ehci_attach(device_t parent, device_t self, void *aux)
70 {
71 struct tegra_ehci_softc * const sc = device_private(self);
72 struct tegraio_attach_args * const tio = aux;
73 const struct tegra_locators * const loc = &tio->tio_loc;
74 int error;
75
76 sc->sc.sc_dev = self;
77 sc->sc.sc_bus.ub_hcpriv = &sc->sc;
78 sc->sc.sc_bus.ub_dmatag = tio->tio_dmat;
79 sc->sc.sc_bus.ub_revision = USBREV_2_0;
80 sc->sc.sc_flags = EHCIF_ETTF;
81 sc->sc.sc_id_vendor = 0x10de;
82 strlcpy(sc->sc.sc_vendor, "Tegra", sizeof(sc->sc.sc_vendor));
83 sc->sc.sc_size = loc->loc_size;
84 sc->sc.iot = tio->tio_bst;
85 bus_space_subregion(tio->tio_bst, tio->tio_bsh,
86 loc->loc_offset, loc->loc_size, &sc->sc.ioh);
87
88 aprint_naive("\n");
89 aprint_normal(": USB%d\n", loc->loc_port + 1);
90
91 sc->sc.sc_offs = EREAD1(&sc->sc, EHCI_CAPLENGTH);
92
93 sc->sc_ih = intr_establish(loc->loc_intr, IPL_USB, IST_LEVEL,
94 ehci_intr, &sc->sc);
95 if (sc->sc_ih == NULL) {
96 aprint_error_dev(self, "couldn't establish interrupt %d\n",
97 loc->loc_intr);
98 return;
99 }
100 aprint_normal_dev(self, "interrupting on irq %d\n", loc->loc_intr);
101
102 error = ehci_init(&sc->sc);
103 if (error) {
104 aprint_error_dev(self, "init failed, error = %d\n", error);
105 return;
106 }
107
108 sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint);
109 }
110