1 /*
2 * Copyright 2017 Emmanuel Vadot <manu@freebsd.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
21 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
24 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <sys/param.h>
28 #include <sys/kernel.h>
29 #include <sys/bus.h>
30 #include <sys/module.h>
31 #include <sys/queue.h>
32 #include <sys/taskqueue.h>
33
34 #include <machine/bus.h>
35
36 #include <dev/mmc/bridge.h>
37 #include <dev/mmc/mmc_fdt_helpers.h>
38
39 #include <dev/ofw/ofw_bus_subr.h>
40
41 #include <dev/mmc/host/dwmmc_var.h>
42
43 #include "opt_mmccam.h"
44
45 static struct ofw_compat_data compat_data[] = {
46 {"altr,socfpga-dw-mshc", 1},
47 {NULL, 0},
48 };
49
50 static int
altera_dwmmc_probe(device_t dev)51 altera_dwmmc_probe(device_t dev)
52 {
53
54 if (!ofw_bus_status_okay(dev))
55 return (ENXIO);
56
57 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
58 return (ENXIO);
59
60 device_set_desc(dev, "Synopsys DesignWare Mobile "
61 "Storage Host Controller (Altera)");
62
63 return (BUS_PROBE_VENDOR);
64 }
65
66 static int
altera_dwmmc_attach(device_t dev)67 altera_dwmmc_attach(device_t dev)
68 {
69 struct dwmmc_softc *sc;
70 phandle_t root;
71
72 sc = device_get_softc(dev);
73 sc->hwtype = HWTYPE_ALTERA;
74
75 root = OF_finddevice("/");
76
77 if (ofw_bus_node_is_compatible(root, "altr,socfpga-stratix10")) {
78 sc->bus_hz = 24000000;
79 sc->use_pio = 1;
80 }
81
82 return (dwmmc_attach(dev));
83 }
84
85 static device_method_t altera_dwmmc_methods[] = {
86 /* bus interface */
87 DEVMETHOD(device_probe, altera_dwmmc_probe),
88 DEVMETHOD(device_attach, altera_dwmmc_attach),
89
90 DEVMETHOD_END
91 };
92
93 DEFINE_CLASS_1(altera_dwmmc, altera_dwmmc_driver, altera_dwmmc_methods,
94 sizeof(struct dwmmc_softc), dwmmc_driver);
95
96 DRIVER_MODULE(altera_dwmmc, simplebus, altera_dwmmc_driver, 0, 0);
97 DRIVER_MODULE(altera_dwmmc, ofwbus, altera_dwmmc_driver, NULL, NULL);
98 #ifndef MMCCAM
99 MMC_DECLARE_BRIDGE(altera_dwmmc);
100 #endif
101