1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2015 Semihalf.
5 * Copyright (c) 2015 Stormshield.
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 "opt_bus.h"
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/bus.h>
35 #include <sys/condvar.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38
39 #include <dev/usb/usb.h>
40 #include <dev/usb/usbdi.h>
41
42 #include <dev/usb/usb_core.h>
43 #include <dev/usb/usb_busdma.h>
44 #include <dev/usb/usb_process.h>
45
46 #include <dev/usb/usb_controller.h>
47 #include <dev/usb/usb_bus.h>
48 #include <dev/usb/controller/xhci.h>
49
50 #include <dev/ofw/ofw_bus.h>
51 #include <dev/ofw/ofw_bus_subr.h>
52
53 #include <dev/phy/phy.h>
54
55 #include "generic_xhci.h"
56
57 /* Flags for the OFW compat data table */
58 #define XHCI_FDT_MATCH 0x01
59 #define XHCI_FDT_32BIT_DMA 0x02 /* Controller needs 32-bit DMA */
60
61 static struct ofw_compat_data compat_data[] = {
62 {"marvell,armada-380-xhci", XHCI_FDT_MATCH},
63 {"marvell,armada3700-xhci", XHCI_FDT_MATCH},
64 {"marvell,armada-8k-xhci", XHCI_FDT_MATCH},
65 {"generic-xhci", XHCI_FDT_MATCH},
66 {NULL, 0}
67 };
68
69 static int
generic_xhci_fdt_probe(device_t dev)70 generic_xhci_fdt_probe(device_t dev)
71 {
72
73 if (!ofw_bus_status_okay(dev))
74 return (ENXIO);
75
76 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
77 return (ENXIO);
78
79 device_set_desc(dev, XHCI_HC_DEVSTR);
80
81 return (BUS_PROBE_DEFAULT);
82 }
83
84 static int
generic_xhci_fdt_attach(device_t dev)85 generic_xhci_fdt_attach(device_t dev)
86 {
87 struct xhci_softc *sc = device_get_softc(dev);
88 phandle_t node;
89 phy_t phy;
90 int flags;
91
92 node = ofw_bus_get_node(dev);
93 if (phy_get_by_ofw_property(dev, node, "usb-phy", &phy) == 0)
94 if (phy_enable(phy) != 0)
95 device_printf(dev, "Cannot enable phy\n");
96
97 flags = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
98 if ((flags & XHCI_FDT_32BIT_DMA) != 0)
99 sc->sc_quirks |= XHCI_QUIRK_DMA_32B;
100
101 return (generic_xhci_attach(dev));
102 }
103
104 static int
generic_xhci_fdt_detach(device_t dev)105 generic_xhci_fdt_detach(device_t dev)
106 {
107 phandle_t node;
108 phy_t phy;
109 int err;
110
111 err = generic_xhci_detach(dev);
112 if (err != 0)
113 return (err);
114
115 node = ofw_bus_get_node(dev);
116 if (phy_get_by_ofw_property(dev, node, "usb-phy", &phy) == 0)
117 phy_release(phy);
118
119 return (0);
120 }
121
122 static device_method_t xhci_fdt_methods[] = {
123 /* Device interface */
124 DEVMETHOD(device_probe, generic_xhci_fdt_probe),
125 DEVMETHOD(device_attach, generic_xhci_fdt_attach),
126 DEVMETHOD(device_detach, generic_xhci_fdt_detach),
127
128 DEVMETHOD_END
129 };
130
131 DEFINE_CLASS_1(xhci, xhci_fdt_driver, xhci_fdt_methods,
132 sizeof(struct xhci_softc), generic_xhci_driver);
133
134 DRIVER_MODULE(xhci, simplebus, xhci_fdt_driver, 0, 0);
135 MODULE_DEPEND(xhci, usb, 1, 1, 1);
136