1 /*
2 * Copyright 2015 Andrew Turner.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include <sys/param.h>
29 #include <sys/kernel.h>
30 #include <sys/bus.h>
31 #include <sys/module.h>
32 #include <sys/queue.h>
33 #include <sys/taskqueue.h>
34
35 #include <machine/bus.h>
36
37 #include <dev/mmc/bridge.h>
38 #include <dev/mmc/mmc_fdt_helpers.h>
39
40 #include <dev/ofw/ofw_bus_subr.h>
41
42 #include <dev/mmc/host/dwmmc_var.h>
43
44 #include "opt_mmccam.h"
45
46 static device_probe_t hisi_dwmmc_probe;
47 static device_attach_t hisi_dwmmc_attach;
48
49 static int
hisi_dwmmc_probe(device_t dev)50 hisi_dwmmc_probe(device_t dev)
51 {
52
53 if (!ofw_bus_status_okay(dev))
54 return (ENXIO);
55
56 if (!ofw_bus_is_compatible(dev, "hisilicon,hi6220-dw-mshc"))
57 return (ENXIO);
58
59 device_set_desc(dev, "Synopsys DesignWare Mobile "
60 "Storage Host Controller (HiSilicon)");
61
62 return (BUS_PROBE_VENDOR);
63 }
64
65 static int
hisi_dwmmc_attach(device_t dev)66 hisi_dwmmc_attach(device_t dev)
67 {
68 struct dwmmc_softc *sc;
69
70 sc = device_get_softc(dev);
71 sc->hwtype = HWTYPE_HISILICON;
72 /* TODO: Calculate this from a clock driver */
73 sc->bus_hz = 24000000; /* 24MHz */
74
75 /*
76 * ARM64TODO: This is likely because we lack support for
77 * DMA when the controller is not cache-coherent on arm64.
78 */
79 sc->use_pio = 1;
80
81 return (dwmmc_attach(dev));
82 }
83
84 static device_method_t hisi_dwmmc_methods[] = {
85 /* bus interface */
86 DEVMETHOD(device_probe, hisi_dwmmc_probe),
87 DEVMETHOD(device_attach, hisi_dwmmc_attach),
88
89 DEVMETHOD_END
90 };
91
92 DEFINE_CLASS_1(hisi_dwmmc, hisi_dwmmc_driver, hisi_dwmmc_methods,
93 sizeof(struct dwmmc_softc), dwmmc_driver);
94
95 DRIVER_MODULE(hisi_dwmmc, simplebus, hisi_dwmmc_driver, 0, 0);
96 DRIVER_MODULE(hisi_dwmmc, ofwbus, hisi_dwmmc_driver, NULL, NULL);
97 #ifndef MMCCAM
98 MMC_DECLARE_BRIDGE(hisi_dwmmc);
99 #endif
100