1 /* $NetBSD: if_gem_sbus.c,v 1.16 2026/07/18 14:08:52 thorpej 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 1.16 2026/07/18 14:08:52 thorpej 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/socket.h> 44 45 #include <net/if.h> 46 #include <net/if_dl.h> 47 #include <net/if_ether.h> 48 #include <net/if_media.h> 49 50 #include <dev/mii/mii.h> 51 #include <dev/mii/miivar.h> 52 53 #include <sys/bus.h> 54 #include <sys/intr.h> 55 #include <machine/autoconf.h> 56 57 #include <dev/sbus/sbusvar.h> 58 59 #include <dev/ic/gemreg.h> 60 #include <dev/ic/gemvar.h> 61 62 struct gem_sbus_softc { 63 struct gem_softc gsc_gem; /* GEM device */ 64 void *gsc_ih; 65 bus_space_handle_t gsc_sbus_regs_h; 66 }; 67 68 int gemmatch_sbus(device_t, cfdata_t, void *); 69 void gemattach_sbus(device_t, device_t, void *); 70 71 CFATTACH_DECL3_NEW(gem_sbus, sizeof(struct gem_sbus_softc), 72 gemmatch_sbus, gemattach_sbus, NULL, NULL, NULL, NULL, 0); 73 74 int 75 gemmatch_sbus(device_t parent, cfdata_t cf, void *aux) 76 { 77 struct sbus_attach_args *sa = aux; 78 79 return (strcmp("network", sa->sa_name) == 0); 80 } 81 82 void 83 gemattach_sbus(device_t parent, device_t self, void *aux) 84 { 85 struct sbus_attach_args *sa = aux; 86 struct gem_sbus_softc *gsc = device_private(self); 87 struct gem_softc *sc = &gsc->gsc_gem; 88 uint8_t enaddr[ETHER_ADDR_LEN]; 89 uint32_t sbus_cfg; 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 if (! ether_getaddr(self, enaddr)) { 104 aprint_error(": unable to get MAC address\n"); 105 return; 106 } 107 108 /* 109 * Map two register banks: 110 * 111 * bank 0: status, config, reset 112 * bank 1: various gem parts 113 * 114 */ 115 if (sbus_bus_map(sa->sa_bustag, 116 sa->sa_reg[0].oa_space, 117 sa->sa_reg[0].oa_base, 118 (bus_size_t)sa->sa_reg[0].oa_size, 119 0, &sc->sc_h2) != 0) { 120 aprint_error_dev(self, "cannot map registers\n"); 121 return; 122 } 123 if (sbus_bus_map(sa->sa_bustag, 124 sa->sa_reg[1].oa_space, 125 sa->sa_reg[1].oa_base, 126 (bus_size_t)sa->sa_reg[1].oa_size, 127 0, &sc->sc_h1) != 0) { 128 aprint_error_dev(self, "cannot map registers\n"); 129 return; 130 } 131 132 if (!strcmp("serdes", prom_getpropstring(sa->sa_node, "shared-pins"))) 133 sc->sc_flags |= GEM_SERDES; 134 sc->sc_variant = GEM_SUN_GEM; 135 sc->sc_flags &= ~GEM_PCI; 136 137 /* 138 * SBUS config 139 */ 140 (void) bus_space_read_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_RESET); 141 delay(100); 142 143 #if defined(__sparc64__) 144 sbus_cfg = GEM_SBUS_CFG_BSIZE128 | GEM_SBUS_CFG_PARITY | 145 GEM_SBUS_CFG_BMODE64; 146 #else 147 sbus_cfg = GEM_SBUS_CFG_BSIZE64; 148 #endif 149 bus_space_write_4(sa->sa_bustag, sc->sc_h2, GEM_SBUS_CONFIG, sbus_cfg); 150 sc->sc_chiprev = bus_space_read_4(sa->sa_bustag, sc->sc_h2, 151 GEM_SBUS_REVISION); 152 153 printf(": GEM Ethernet controller (%s), version %s (rev 0x%02x)\n", 154 sa->sa_name, prom_getpropstring(sa->sa_node, "version"), 155 sc->sc_chiprev); 156 157 gem_attach(sc, enaddr); 158 159 /* Establish interrupt handler */ 160 if (sa->sa_nintr != 0) 161 gsc->gsc_ih = bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_NET, 162 gem_intr, sc); 163 } 164
Indexes created Sun Oct 25 00:26:45 UTC 2026