1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2019 Ruslan Bukin <br@bsdpad.com>
5 *
6 * This software was developed by SRI International and the University of
7 * Cambridge Computer Laboratory (Department of Computer Science and
8 * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
9 * DARPA SSITH research programme.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE 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 THE 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#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/bus.h>
36#include <sys/kernel.h>
37#include <sys/socket.h>
38#include <sys/module.h>
39
40#include <net/if.h>
41
42#include <machine/bus.h>
43
44#include <dev/ofw/ofw_bus.h>
45#include <dev/ofw/ofw_bus_subr.h>
46
47#include <dev/clk/clk.h>
48#include <dev/hwreset/hwreset.h>
49
50#include <dev/dwc/if_dwcvar.h>
51#include <dev/dwc/dwc1000_reg.h>
52
53#include "if_dwc_if.h"
54
55static int
56if_dwc_socfpga_probe(device_t dev)
57{
58
59	if (!ofw_bus_status_okay(dev))
60		return (ENXIO);
61
62	if (!ofw_bus_is_compatible(dev, "altr,socfpga-stmmac"))
63		return (ENXIO);
64
65	device_set_desc(dev, "Altera SOCFPGA Ethernet MAC");
66
67	return (BUS_PROBE_DEFAULT);
68}
69
70static int
71if_dwc_socfpga_init(device_t dev)
72{
73
74	return (0);
75}
76
77static int
78if_dwc_socfpga_mii_clk(device_t dev)
79{
80	phandle_t root;
81
82	root = OF_finddevice("/");
83
84	if (ofw_bus_node_is_compatible(root, "altr,socfpga-stratix10"))
85		return (GMAC_MII_CLK_35_60M_DIV26);
86
87	/* Default value. */
88	return (GMAC_MII_CLK_25_35M_DIV16);
89}
90
91static device_method_t dwc_socfpga_methods[] = {
92	DEVMETHOD(device_probe,		if_dwc_socfpga_probe),
93
94	DEVMETHOD(if_dwc_init,		if_dwc_socfpga_init),
95	DEVMETHOD(if_dwc_mii_clk,	if_dwc_socfpga_mii_clk),
96
97	DEVMETHOD_END
98};
99
100extern driver_t dwc_driver;
101
102DEFINE_CLASS_1(dwc, dwc_socfpga_driver, dwc_socfpga_methods,
103    sizeof(struct dwc_softc), dwc_driver);
104EARLY_DRIVER_MODULE(dwc_socfpga, simplebus, dwc_socfpga_driver, 0, 0,
105    BUS_PASS_SUPPORTDEV + BUS_PASS_ORDER_MIDDLE);
106
107MODULE_DEPEND(dwc_socfpga, dwc, 1, 1, 1);
108