1 /* $NetBSD: if_le_isapnp.c,v 1.37 2022/05/29 10:43:46 rin Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1997 Jonathan Stone <jonathan (at) NetBSD.org> and 35 * Matthias Drochner. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by Jonathan Stone. 48 * 4. The name of the author may not be used to endorse or promote products 49 * derived from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 54 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 55 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 56 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 60 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: if_le_isapnp.c,v 1.37 2022/05/29 10:43:46 rin Exp $"); 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/mbuf.h> 69 #include <sys/socket.h> 70 #include <sys/ioctl.h> 71 #include <sys/errno.h> 72 #include <sys/syslog.h> 73 #include <sys/select.h> 74 #include <sys/device.h> 75 76 #include <net/if.h> 77 #include <net/if_dl.h> 78 #include <net/if_ether.h> 79 #include <net/if_media.h> 80 81 #include <sys/cpu.h> 82 #include <sys/bus.h> 83 #include <sys/intr.h> 84 85 #include <dev/isa/isavar.h> 86 #include <dev/isa/isadmavar.h> 87 88 #include <dev/isapnp/isapnpreg.h> 89 #include <dev/isapnp/isapnpvar.h> 90 #include <dev/isapnp/isapnpdevs.h> 91 92 #include <dev/ic/lancereg.h> 93 #include <dev/ic/lancevar.h> 94 #include <dev/ic/am7990reg.h> 95 #include <dev/ic/am7990var.h> 96 97 #define LE_ISAPNP_MEMSIZE 16384 98 99 #define PCNET_SAPROM 0x00 100 #define PCNET_RDP 0x10 101 #define PCNET_RAP 0x12 102 103 /* 104 * Ethernet software status per interface. 105 * 106 * Each interface is referenced by a network interface structure, 107 * ethercom.ec_if, which the routing code uses to locate the interface. 108 * This structure contains the output queue for the interface, its address, ... 109 */ 110 struct le_isapnp_softc { 111 struct am7990_softc sc_am7990; /* glue to MI code */ 112 113 void *sc_ih; 114 bus_space_tag_t sc_iot; /* space cookie */ 115 bus_space_handle_t sc_ioh; /* bus space handle */ 116 bus_dma_tag_t sc_dmat; /* bus dma tag */ 117 bus_dmamap_t sc_dmam; /* bus dma map */ 118 int sc_rap, sc_rdp; /* offsets to LANCE registers */ 119 }; 120 121 int le_isapnp_match(device_t, cfdata_t, void *); 122 void le_isapnp_attach(device_t, device_t, void *); 123 124 CFATTACH_DECL_NEW(le_isapnp, sizeof(struct le_isapnp_softc), 125 le_isapnp_match, le_isapnp_attach, NULL, NULL); 126 127 int le_isapnp_intredge(void *); 128 static void le_isapnp_wrcsr(struct lance_softc *, uint16_t, uint16_t); 129 static uint16_t le_isapnp_rdcsr(struct lance_softc *, uint16_t); 130 131 static void 132 le_isapnp_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 133 { 134 struct le_isapnp_softc *lesc = (struct le_isapnp_softc *)sc; 135 bus_space_tag_t iot = lesc->sc_iot; 136 bus_space_handle_t ioh = lesc->sc_ioh; 137 138 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 139 bus_space_write_2(iot, ioh, lesc->sc_rdp, val); 140 } 141 142 static uint16_t 143 le_isapnp_rdcsr(struct lance_softc *sc, uint16_t port) 144 { 145 struct le_isapnp_softc *lesc = (struct le_isapnp_softc *)sc; 146 bus_space_tag_t iot = lesc->sc_iot; 147 bus_space_handle_t ioh = lesc->sc_ioh; 148 uint16_t val; 149 150 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 151 val = bus_space_read_2(iot, ioh, lesc->sc_rdp); 152 return (val); 153 } 154 155 int 156 le_isapnp_match(device_t parent, cfdata_t cf, void *aux) 157 { 158 int pri, variant; 159 160 pri = isapnp_devmatch(aux, &isapnp_le_devinfo, &variant); 161 if (pri && variant > 0) 162 pri = 0; 163 return (pri); 164 } 165 166 void 167 le_isapnp_attach(device_t parent, device_t self, void *aux) 168 { 169 struct le_isapnp_softc *lesc = device_private(self); 170 struct lance_softc *sc = &lesc->sc_am7990.lsc; 171 struct isapnp_attach_args *ipa = aux; 172 bus_space_tag_t iot; 173 bus_space_handle_t ioh; 174 bus_dma_tag_t dmat; 175 bus_dma_segment_t seg; 176 int i, rseg, error; 177 178 sc->sc_dev = self; 179 180 if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) { 181 aprint_error(": error in region allocation\n"); 182 return; 183 } 184 185 lesc->sc_iot = iot = ipa->ipa_iot; 186 lesc->sc_ioh = ioh = ipa->ipa_io[0].h; 187 lesc->sc_dmat = dmat = ipa->ipa_dmat; 188 189 lesc->sc_rap = PCNET_RAP; 190 lesc->sc_rdp = PCNET_RDP; 191 192 /* 193 * Extract the physical MAC address from the ROM. 194 */ 195 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 196 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, PCNET_SAPROM + i); 197 198 /* 199 * Allocate a DMA area for the card. 200 */ 201 if (bus_dmamem_alloc(dmat, LE_ISAPNP_MEMSIZE, PAGE_SIZE, 0, &seg, 1, 202 &rseg, BUS_DMA_NOWAIT)) { 203 aprint_error(": couldn't allocate memory for card\n"); 204 return; 205 } 206 if (bus_dmamem_map(dmat, &seg, rseg, LE_ISAPNP_MEMSIZE, 207 (void **)&sc->sc_mem, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 208 aprint_error(": couldn't map memory for card\n"); 209 goto bad_free; 210 } 211 212 /* 213 * Create and load the DMA map for the DMA area. 214 */ 215 if (bus_dmamap_create(dmat, LE_ISAPNP_MEMSIZE, 1, 216 LE_ISAPNP_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) { 217 aprint_error(": couldn't create DMA map\n"); 218 goto bad_unmap; 219 } 220 if (bus_dmamap_load(dmat, lesc->sc_dmam, 221 sc->sc_mem, LE_ISAPNP_MEMSIZE, NULL, BUS_DMA_NOWAIT)) { 222 aprint_error(": couldn't load DMA map\n"); 223 goto bad_destroy; 224 } 225 226 sc->sc_conf3 = 0; 227 sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr; 228 sc->sc_memsize = LE_ISAPNP_MEMSIZE; 229 230 sc->sc_copytodesc = lance_copytobuf_contig; 231 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 232 sc->sc_copytobuf = lance_copytobuf_contig; 233 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 234 sc->sc_zerobuf = lance_zerobuf_contig; 235 236 sc->sc_rdcsr = le_isapnp_rdcsr; 237 sc->sc_wrcsr = le_isapnp_wrcsr; 238 sc->sc_hwinit = NULL; 239 240 if (ipa->ipa_ndrq > 0) { 241 if ((error = isa_dmacascade(ipa->ipa_ic, 242 ipa->ipa_drq[0].num)) != 0) { 243 aprint_error(": unable to cascade DRQ, error = %d\n", 244 error); 245 goto bad_destroy; 246 } 247 } 248 249 lesc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num, 250 ipa->ipa_irq[0].type, IPL_NET, le_isapnp_intredge, sc); 251 252 aprint_normal(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass); 253 254 aprint_normal("%s", device_xname(self)); 255 am7990_config(&lesc->sc_am7990); 256 257 return; 258 259 bad_destroy: 260 bus_dmamap_destroy(dmat, lesc->sc_dmam); 261 bad_unmap: 262 bus_dmamem_unmap(dmat, sc->sc_mem, LE_ISAPNP_MEMSIZE); 263 bad_free: 264 bus_dmamem_free(dmat, &seg, rseg); 265 } 266 267 268 /* 269 * Controller interrupt. 270 */ 271 int 272 le_isapnp_intredge(void *arg) 273 { 274 275 if (am7990_intr(arg) == 0) 276 return (0); 277 for (;;) 278 if (am7990_intr(arg) == 0) 279 return (1); 280 } 281
Indexes created Tue Sep 30 10:09:55 GMT 2025