Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/snc/if_snc.c
Version:
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1 /*- 2 * Copyright (c) 1995, David Greenman 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 /* 33 * National Semiconductor DP8393X SONIC Driver 34 * 35 * This is the bus independent attachment on FreeBSD 4.x 36 * written by Motomichi Matsuzaki <mzaki@e-mail.ne.jp> 37 */ 38 39 #include <sys/param.h> 40 #include <sys/socket.h> 41 42 #include <sys/bus.h> 43 #include <machine/bus.h> 44 #include <sys/rman.h> 45 #include <machine/resource.h> 46 47 #include <net/ethernet.h> 48 #include <net/if.h> 49 #include <net/if_arp.h> 50 #include <net/if_media.h> 51 52 #include <dev/snc/dp83932reg.h> 53 #include <dev/snc/dp83932var.h> 54 #include <dev/snc/dp83932subr.h> 55 #include <dev/snc/if_sncreg.h> 56 #include <dev/snc/if_sncvar.h> 57 58 /* devclass for "snc" */ 59 devclass_t snc_devclass; 60 61 /**************************************************************** 62 Resource management functions 63 ****************************************************************/ 64 65 /* 66 * Allocate a port resource with the given resource id. 67 */ 68 int 69 snc_alloc_port(device_t dev, int rid) 70 { 71 struct snc_softc *sc = device_get_softc(dev); 72 struct resource *res; 73 74 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 75 0ul, ~0ul, SNEC_NREGS, RF_ACTIVE); 76 if (res) { 77 sc->ioport = res; 78 sc->ioport_rid = rid; 79 sc->sc_iot = rman_get_bustag(res); 80 sc->sc_ioh = rman_get_bushandle(res); 81 return (0); 82 } else { 83 device_printf(dev, "can't assign port\n"); 84 return (ENOENT); 85 } 86 } 87 88 /* 89 * Allocate a memory resource with the given resource id. 90 */ 91 int 92 snc_alloc_memory(device_t dev, int rid) 93 { 94 struct snc_softc *sc = device_get_softc(dev); 95 struct resource *res; 96 97 res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 98 0ul, ~0ul, SNEC_NMEMS, RF_ACTIVE); 99 if (res) { 100 sc->iomem = res; 101 sc->iomem_rid = rid; 102 sc->sc_memt = rman_get_bustag(res); 103 sc->sc_memh = rman_get_bushandle(res); 104 return (0); 105 } else { 106 device_printf(dev, "can't assign memory\n"); 107 return (ENOENT); 108 } 109 } 110 111 /* 112 * Allocate an irq resource with the given resource id. 113 */ 114 int 115 snc_alloc_irq(device_t dev, int rid, int flags) 116 { 117 struct snc_softc *sc = device_get_softc(dev); 118 struct resource *res; 119 120 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | flags); 121 if (res) { 122 sc->irq = res; 123 sc->irq_rid = rid; 124 return (0); 125 } else { 126 device_printf(dev, "can't assign irq\n"); 127 return (ENOENT); 128 } 129 } 130 131 /* 132 * Release all resources 133 */ 134 void 135 snc_release_resources(device_t dev) 136 { 137 struct snc_softc *sc = device_get_softc(dev); 138 139 if (sc->ioport) { 140 bus_release_resource(dev, SYS_RES_IOPORT, 141 sc->ioport_rid, sc->ioport); 142 sc->ioport = 0; 143 } 144 if (sc->iomem) { 145 bus_release_resource(dev, SYS_RES_MEMORY, 146 sc->iomem_rid, sc->iomem); 147 sc->iomem = 0; 148 } 149 if (sc->irq) { 150 bus_release_resource(dev, SYS_RES_IRQ, 151 sc->irq_rid, sc->irq); 152 sc->irq = 0; 153 } 154 if (sc->sc_ifp) { 155 if_free(sc->sc_ifp); 156 sc->sc_ifp = 0; 157 } 158 } 159 160 /**************************************************************** 161 Probe routine 162 ****************************************************************/ 163 164 int 165 snc_probe(device_t dev, int type) 166 { 167 struct snc_softc *sc = device_get_softc(dev); 168 169 return snc_nec16_detectsubr(sc->sc_iot, sc->sc_ioh, 170 sc->sc_memt, sc->sc_memh, 171 rman_get_start(sc->irq), 172 rman_get_start(sc->iomem), 173 type); 174 } 175 176 /**************************************************************** 177 Attach routine 178 ****************************************************************/ 179 180 int 181 snc_attach(device_t dev) 182 { 183 struct snc_softc *sc = device_get_softc(dev); 184 u_int8_t myea[ETHER_ADDR_LEN]; 185 int error; 186 187 if (snc_nec16_register_irq(sc, rman_get_start(sc->irq)) == 0 || 188 snc_nec16_register_mem(sc, rman_get_start(sc->iomem)) == 0) { 189 snc_release_resources(dev); 190 return(ENOENT); 191 } 192 193 snc_nec16_get_enaddr(sc->sc_iot, sc->sc_ioh, myea); 194 device_printf(dev, "%s Ethernet\n", snc_nec16_detect_type(myea)); 195 196 sc->sc_dev = dev; 197 198 sc->sncr_dcr = DCR_SYNC | DCR_WAIT0 | 199 DCR_DMABLOCK | DCR_RFT16 | DCR_TFT28; 200 sc->sncr_dcr2 = 0; /* XXX */ 201 sc->bitmode = 0; /* 16 bit card */ 202 203 sc->sc_nic_put = snc_nec16_nic_put; 204 sc->sc_nic_get = snc_nec16_nic_get; 205 sc->sc_writetodesc = snc_nec16_writetodesc; 206 sc->sc_readfromdesc = snc_nec16_readfromdesc; 207 sc->sc_copytobuf = snc_nec16_copytobuf; 208 sc->sc_copyfrombuf = snc_nec16_copyfrombuf; 209 sc->sc_zerobuf = snc_nec16_zerobuf; 210 211 /* sncsetup returns 1 if something fails */ 212 if (sncsetup(sc, myea)) { 213 snc_release_resources(dev); 214 return(ENOENT); 215 } 216 217 mtx_init(&sc->sc_lock, device_get_nameunit(dev), MTX_NETWORK_LOCK, 218 MTX_DEF); 219 callout_init_mtx(&sc->sc_timer, &sc->sc_lock, 0); 220 error = sncconfig(sc, NULL, 0, 0, myea); 221 if (error) { 222 snc_release_resources(dev); 223 mtx_destroy(&sc->sc_lock); 224 return (error); 225 } 226 227 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 228 NULL, sncintr, sc, &sc->irq_handle); 229 if (error) { 230 printf("snc_isa_attach: bus_setup_intr() failed\n"); 231 ether_ifdetach(sc->sc_ifp); 232 snc_release_resources(dev); 233 mtx_destroy(&sc->sc_lock); 234 return (error); 235 } 236 237 return 0; 238 } 239 240 /**************************************************************** 241 Shutdown routine 242 ****************************************************************/ 243 244 int 245 snc_shutdown(device_t dev) 246 { 247 struct snc_softc *sc = device_get_softc(dev); 248 249 SNC_LOCK(sc); 250 sncshutdown(sc); 251 SNC_UNLOCK(sc); 252 253 return (0); 254 }
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