1 /* $OpenBSD: if_bse_fdt.c,v 1.2 2022/04/06 18:59:28 naddy Exp $ */
2 /*
3 * Copyright (c) 2020 Mark Kettenis <kettenis@openbsd.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #include <sys/param.h>
19 #include <sys/systm.h>
20 #include <sys/device.h>
21
22 #include <machine/bus.h>
23 #include <machine/fdt.h>
24
25 #include <net/if.h>
26 #include <net/if_media.h>
27 #include <netinet/in.h>
28 #include <netinet/if_ether.h>
29
30 #include <dev/ofw/openfirm.h>
31 #include <dev/ofw/fdt.h>
32
33 #include <dev/mii/miivar.h>
34 #include <dev/ic/bcmgenetvar.h>
35
36 int bse_fdt_match(struct device *, void *, void *);
37 void bse_fdt_attach(struct device *, struct device *, void *);
38
39 const struct cfattach bse_fdt_ca = {
40 sizeof (struct genet_softc), bse_fdt_match, bse_fdt_attach
41 };
42
43 int
bse_fdt_match(struct device * parent,void * match,void * aux)44 bse_fdt_match(struct device *parent, void *match, void *aux)
45 {
46 struct fdt_attach_args *faa = aux;
47
48 return (OF_is_compatible(faa->fa_node, "brcm,bcm2711-genet-v5") ||
49 OF_is_compatible(faa->fa_node, "brcm,genet-v5"));
50 }
51
52 void
bse_fdt_attach(struct device * parent,struct device * self,void * aux)53 bse_fdt_attach(struct device *parent, struct device *self, void *aux)
54 {
55 struct genet_softc *sc = (struct genet_softc *)self;
56 struct fdt_attach_args *faa = aux;
57 char phy_mode[16] = { 0 };
58 uint32_t phy;
59 int node, error;
60
61 if (faa->fa_nreg < 1) {
62 printf(": no registers\n");
63 return;
64 }
65
66 sc->sc_bst = faa->fa_iot;
67 sc->sc_dmat = faa->fa_dmat;
68
69 if (bus_space_map(sc->sc_bst, faa->fa_reg[0].addr,
70 faa->fa_reg[0].size, 0, &sc->sc_bsh)) {
71 printf(": can't map registers\n");
72 return;
73 }
74
75 sc->sc_ih = fdt_intr_establish(faa->fa_node, IPL_NET,
76 genet_intr, sc, sc->sc_dev.dv_xname);
77 if (sc->sc_ih == NULL) {
78 printf(": can't establish interrupt\n");
79 goto unmap;
80 }
81
82 if (OF_getprop(faa->fa_node, "local-mac-address",
83 &sc->sc_lladdr, ETHER_ADDR_LEN) != ETHER_ADDR_LEN)
84 genet_lladdr_read(sc, sc->sc_lladdr);
85
86 OF_getprop(faa->fa_node, "phy-mode", phy_mode, sizeof(phy_mode));
87 if (strcmp(phy_mode, "rgmii-id") == 0)
88 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_ID;
89 else if (strcmp(phy_mode, "rgmii-rxid") == 0)
90 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_RXID;
91 else if (strcmp(phy_mode, "rgmii-txid") == 0)
92 sc->sc_phy_mode = GENET_PHY_MODE_RGMII_TXID;
93 else
94 sc->sc_phy_mode = GENET_PHY_MODE_RGMII;
95
96 /* Lookup PHY. */
97 phy = OF_getpropint(faa->fa_node, "phy-handle", 0);
98 node = OF_getnodebyphandle(phy);
99 if (node)
100 sc->sc_phy_id = OF_getpropint(node, "reg", MII_PHY_ANY);
101 else
102 sc->sc_phy_id = MII_PHY_ANY;
103
104 error = genet_attach(sc);
105 if (error)
106 goto disestablish;
107
108 return;
109
110 disestablish:
111 fdt_intr_disestablish(sc->sc_ih);
112 unmap:
113 bus_space_unmap(sc->sc_bst, sc->sc_bsh, faa->fa_reg[0].size);
114 }
115