1/* $NetBSD: genet_fdt.c,v 1.6 2021/05/03 10:28:26 rin Exp $ */
2
3/*-
4 * Copyright (c) 2020 Jared McNeill <jmcneill@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 "opt_net_mpsafe.h"
30
31#include <sys/cdefs.h>
32__KERNEL_RCSID(0, "$NetBSD: genet_fdt.c,v 1.6 2021/05/03 10:28:26 rin 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 <sys/rndsource.h>
42
43#include <net/if.h>
44#include <net/if_dl.h>
45#include <net/if_ether.h>
46#include <net/if_media.h>
47
48#include <dev/mii/miivar.h>
49
50#include <dev/ic/bcmgenetvar.h>
51
52#include <dev/fdt/fdtvar.h>
53
54#ifdef NET_MPSAFE
55#define	FDT_INTR_FLAGS	FDT_INTR_MPSAFE
56#else
57#define	FDT_INTR_FLAGS	0
58#endif
59
60static int	genet_fdt_match(device_t, cfdata_t, void *);
61static void	genet_fdt_attach(device_t, device_t, void *);
62
63CFATTACH_DECL_NEW(genet_fdt, sizeof(struct genet_softc),
64	genet_fdt_match, genet_fdt_attach, NULL, NULL);
65
66static const struct device_compatible_entry compat_data[] = {
67	{ .compat = "brcm,bcm2711-genet-v5" },
68	DEVICE_COMPAT_EOL
69};
70
71static int
72genet_fdt_match(device_t parent, cfdata_t cf, void *aux)
73{
74	struct fdt_attach_args * const faa = aux;
75
76	return of_compatible_match(faa->faa_phandle, compat_data);
77}
78
79static void
80genet_fdt_attach(device_t parent, device_t self, void *aux)
81{
82	struct genet_softc * const sc = device_private(self);
83	struct fdt_attach_args * const faa = aux;
84	const int phandle = faa->faa_phandle;
85	char intrstr[128];
86	bus_addr_t addr;
87	bus_size_t size;
88	void *ih;
89
90	if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
91		aprint_error(": couldn't get registers\n");
92		return;
93	}
94
95	sc->sc_dev = self;
96	sc->sc_bst = faa->faa_bst;
97	if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) {
98		aprint_error(": couldn't map registers\n");
99		return;
100	}
101	sc->sc_dmat = faa->faa_dmat;
102	sc->sc_phy_id = MII_PHY_ANY;
103
104	const char *phy_mode = fdtbus_get_string(phandle, "phy-mode");
105	if (phy_mode == NULL) {
106		aprint_error(": missing 'phy-mode' property\n");
107		return;
108	}
109
110	if (strcmp(phy_mode, "rgmii-rxid") == 0)
111		sc->sc_phy_mode = GENET_PHY_MODE_RGMII_RXID;
112	else if (strcmp(phy_mode, "rgmii-txid") == 0)
113		sc->sc_phy_mode = GENET_PHY_MODE_RGMII_TXID;
114	else if (strcmp(phy_mode, "rgmii-id") == 0)
115		sc->sc_phy_mode = GENET_PHY_MODE_RGMII_ID;
116	else if (strcmp(phy_mode, "rgmii") == 0)
117		sc->sc_phy_mode = GENET_PHY_MODE_RGMII;
118	else {
119		aprint_error(": unsupported phy-mode '%s'\n", phy_mode);
120		return;
121	}
122
123	if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
124		aprint_error(": failed to decode interrupt\n");
125		return;
126	}
127
128	if (genet_attach(sc) != 0)
129		return;
130
131	ih = fdtbus_intr_establish_xname(phandle, 0, IPL_NET, FDT_INTR_MPSAFE,
132	    genet_intr, sc, device_xname(self));
133	if (ih == NULL) {
134		aprint_error_dev(self, "couldn't establish interrupt on %s\n",
135		    intrstr);
136		return;
137	}
138	aprint_normal_dev(self, "interrupting on %s\n", intrstr);
139}
140