1 /* $NetBSD: if_gem_sbus.c,v 1.13 2009/09/17 16:28:12 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Martin Husemann. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * SBus front-end for the GEM network driver 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: if_gem_sbus.c,v 1.13 2009/09/17 16:28:12 tsutsui Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/syslog.h> 42 #include <sys/device.h> 43 #include <sys/malloc.h> 44 #include <sys/socket.h> 45 46 #include <net/if.h> 47 #include <net/if_dl.h> 48 #include <net/if_ether.h> 49 #include <net/if_media.h> 50 51 #include <dev/mii/mii.h> 52 #include <dev/mii/miivar.h> 53 54 #include <sys/bus.h> 55 #include <sys/intr.h> 56 #include <machine/autoconf.h> 57 58 #include <dev/sbus/sbusvar.h> 59 60 #include <dev/ic/gemreg.h> 61 #include <dev/ic/gemvar.h> 62 63 struct gem_sbus_softc { 64 struct gem_softc gsc_gem; /* GEM device */ 65 void *gsc_ih; 66 bus_space_handle_t gsc_sbus_regs_h; 67 }; 68 69 int gemmatch_sbus(device_t, cfdata_t, void *); 70 void gemattach_sbus(device_t, device_t, void *); 71 72 CFATTACH_DECL3_NEW(gem_sbus, sizeof(struct gem_sbus_softc), 73 gemmatch_sbus, gemattach_sbus, NULL, NULL, NULL, NULL, 0); 74 75 int 76 gemmatch_sbus(device_t parent, cfdata_t cf, void *aux) 77 { 78 struct sbus_attach_args *sa = aux; 79 80 return (strcmp("network", sa->sa_name) == 0); 81 } 82 83 void 84 gemattach_sbus(device_t parent, device_t self, void *aux) 85 { 86 struct sbus_attach_args *sa = aux; 87 struct gem_sbus_softc *gsc = device_private(self); 88 struct gem_softc *sc = &gsc->gsc_gem; 89 uint8_t enaddr[ETHER_ADDR_LEN]; 90 91 sc->sc_dev = self; 92 93 /* Pass on the bus tags */ 94 sc->sc_bustag = sa->sa_bustag; 95 sc->sc_dmatag = sa->sa_dmatag; 96 97 if (sa->sa_nreg < 2) { 98 printf("%s: only %d register sets\n", 99 device_xname(self), sa->sa_nreg); 100 return; 101 } 102 103 /* 104 * Map two register banks: 105 * 106 * bank 0: status, config, reset 107 * bank 1: various gem parts 108 * 109 */ 110 if (sbus_bus_map(sa->sa_bustag, 111 sa->sa_reg[0].oa_space, 112 sa->sa_reg[0].oa_base, 113 (bus_size_t)sa->sa_reg[0].oa_size, 114 0, &sc->sc_h2) != 0) { 115 aprint_error_dev(self, "cannot map registers\n"); 116 return; 117 } 118 if (sbus_bus_map(sa->sa_bustag, 119 sa->sa_reg[1].oa_space, 120 sa->sa_reg[1].oa_base, 121 (bus_size_t)sa->sa_reg[1].oa_size, 122 0, &sc->sc_h1) != 0) { 123 aprint_error_dev(self, "cannot map registers\n"); 124 return; 125 } 126 prom_getether(sa->sa_node, enaddr); 127 128 if (!strcmp("serdes", prom_getpropstring(sa->sa_node, "shared-pins"))) 129 sc->sc_flags |= GEM_SERDES; 130 sc->sc_variant = GEM_SUN_GEM; 131 sc->sc_flags &= ~GEM_PCI; 132 133 /* 134 * SBUS config 135 */ 136 (void) bus_space_read_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_RESET); 137 delay(100); 138 bus_space_write_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_CONFIG, 139 GEM_SBUS_CFG_BSIZE128|GEM_SBUS_CFG_PARITY|GEM_SBUS_CFG_BMODE64); 140 sc->sc_chiprev = bus_space_read_4(sa->sa_bustag, sc->sc_h2, 141 GEM_SBUS_REVISION); 142 143 printf(": GEM Ethernet controller (%s), version %s (rev 0x%02x)\n", 144 sa->sa_name, prom_getpropstring(sa->sa_node, "version"), 145 sc->sc_chiprev); 146 147 gem_attach(sc, enaddr); 148 149 /* Establish interrupt handler */ 150 if (sa->sa_nintr != 0) 151 gsc->gsc_ih = bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET, 152 gem_intr, sc); 153 } 154