1 /* $NetBSD: smsh_fdt.c,v 1.4 2021/01/27 03:10:19 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2017 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 <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: smsh_fdt.c,v 1.4 2021/01/27 03:10:19 thorpej Exp $");
31
32 #include <sys/param.h>
33 #include <sys/bus.h>
34 #include <sys/device.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37
38 #include <dev/fdt/fdtvar.h>
39
40 #include <net/if.h>
41 #include <net/if_ether.h>
42 #include <net/if_media.h>
43
44 #include <dev/mii/miivar.h>
45
46 #include <dev/ic/lan9118var.h>
47 #include <dev/ic/lan9118reg.h>
48
49 static int smsh_fdt_match(device_t, cfdata_t, void *);
50 static void smsh_fdt_attach(device_t, device_t, void *);
51
52 static const struct device_compatible_entry compat_data[] = {
53 { .compat = "smsc,lan9118" },
54 { .compat = "smsc,lan9115" },
55 DEVICE_COMPAT_EOL
56 };
57
58 CFATTACH_DECL_NEW(smsh_fdt, sizeof(struct lan9118_softc),
59 smsh_fdt_match, smsh_fdt_attach, NULL, NULL);
60
61 static int
smsh_fdt_match(device_t parent,cfdata_t cf,void * aux)62 smsh_fdt_match(device_t parent, cfdata_t cf, void *aux)
63 {
64 struct fdt_attach_args * const faa = aux;
65
66 return of_compatible_match(faa->faa_phandle, compat_data);
67 }
68
69 static void
smsh_fdt_attach(device_t parent,device_t self,void * aux)70 smsh_fdt_attach(device_t parent, device_t self, void *aux)
71 {
72 struct lan9118_softc * const sc = device_private(self);
73 struct fdt_attach_args * const faa = aux;
74 const int phandle = faa->faa_phandle;
75 const char *enaddr;
76 char intrstr[128];
77 bus_addr_t addr;
78 bus_size_t size;
79 int len;
80 void *ih;
81
82 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
83 aprint_error(": missing 'reg' property\n");
84 return;
85 }
86
87 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
88 aprint_error_dev(self, "failed to decode interrupt\n");
89 return;
90 }
91
92 sc->sc_dev = self;
93 sc->sc_iot = faa->faa_bst;
94 if (bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_ioh)) {
95 aprint_error(": couldn't map device\n");
96 return;
97 }
98
99 if (of_hasprop(phandle, "smsc,irq-active-high"))
100 sc->sc_flags |= LAN9118_FLAGS_IRQ_ACTHI;
101 if (of_hasprop(phandle, "smsc,irq-push-pull"))
102 sc->sc_flags |= LAN9118_FLAGS_IRQ_PP;
103
104 enaddr = fdtbus_get_prop(phandle, "local-mac-address", &len);
105 if (enaddr == NULL || len != ETHER_ADDR_LEN)
106 enaddr = fdtbus_get_prop(phandle, "mac-address", &len);
107 if (enaddr != NULL && len == ETHER_ADDR_LEN) {
108 memcpy(sc->sc_enaddr, enaddr, ETHER_ADDR_LEN);
109 sc->sc_flags |= LAN9118_FLAGS_NO_EEPROM;
110 }
111
112 if (lan9118_attach(sc) != 0)
113 goto unmap;
114
115 ih = fdtbus_intr_establish_xname(phandle, 0, IPL_NET, 0, lan9118_intr, sc,
116 device_xname(self));
117 if (ih == NULL) {
118 aprint_error_dev(self, "couldn't install interrupt handler\n");
119 goto unmap;
120 }
121 aprint_normal_dev(self, "interrupting on %s\n", intrstr);
122
123 return;
124
125 unmap:
126 bus_space_unmap(sc->sc_iot, sc->sc_ioh, size);
127 }
128