1 /* $NetBSD: smsh_fdt.c,v 1.1 2017/06/02 10:46:07 jmcneill 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 1.1 2017/06/02 10:46:07 jmcneill 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 char * const compatible[] = { "smsc,lan9118", NULL }; 53 54 CFATTACH_DECL_NEW(smsh_fdt, sizeof(struct lan9118_softc), 55 smsh_fdt_match, smsh_fdt_attach, NULL, NULL); 56 57 static int 58 smsh_fdt_match(device_t parent, cfdata_t cf, void *aux) 59 { 60 struct fdt_attach_args * const faa = aux; 61 62 return of_compatible(faa->faa_phandle, compatible) >= 0; 63 } 64 65 static void 66 smsh_fdt_attach(device_t parent, device_t self, void *aux) 67 { 68 struct lan9118_softc * const sc = device_private(self); 69 struct fdt_attach_args * const faa = aux; 70 char intrstr[128]; 71 const int phandle = faa->faa_phandle; 72 bus_addr_t addr; 73 bus_size_t size; 74 void *ih; 75 76 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 77 aprint_error(": missing 'reg' property\n"); 78 return; 79 } 80 81 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 82 aprint_error_dev(self, "failed to decode interrupt\n"); 83 return; 84 } 85 86 sc->sc_dev = self; 87 sc->sc_iot = faa->faa_bst; 88 if (bus_space_map(faa->faa_bst, addr, size, 0, &sc->sc_ioh)) { 89 aprint_error(": couldn't map device\n"); 90 return; 91 } 92 93 if (of_hasprop(phandle, "smsc,irq-active-high")) 94 sc->sc_flags |= LAN9118_FLAGS_IRQ_ACTHI; 95 if (of_hasprop(phandle, "smsc,irq-push-pull")) 96 sc->sc_flags |= LAN9118_FLAGS_IRQ_PP; 97 98 if (lan9118_attach(sc) != 0) 99 goto unmap; 100 101 ih = fdtbus_intr_establish(phandle, 0, IPL_NET, 0, lan9118_intr, sc); 102 if (ih == NULL) { 103 aprint_error_dev(self, "couldn't install interrupt handler\n"); 104 goto unmap; 105 } 106 aprint_normal_dev(self, "interrupting on %s\n", intrstr); 107 108 return; 109 110 unmap: 111 bus_space_unmap(sc->sc_iot, sc->sc_ioh, size); 112 } 113