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 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 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