if_le_mca.c revision 1.17
1 /* $NetBSD: if_le_mca.c,v 1.17 2008/04/04 12:25:07 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jaromir Dolecek. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Driver for SKNET Personal and MC2+ cards, which are AMD Lance 7990 based 41 * cards made by Syskonnect, former Schneider & Koch Datensysteme GmbH. 42 * 43 * Syskonnect was very helpful and provided docs for these cards promptly. 44 * I wish all vendors would be like that! 45 * I'd like to thank to Alfred Arnold, author of the Linux driver, for 46 * giving me contact to The Right Syskonnect person, too :-) 47 * 48 * Sources: 49 * SKNET MC+ Technical Manual, version 1.1, July 21 1993 50 * SKNET personal Technisches Manual, version 1.2, April 14 1988 51 * SKNET junior Technisches Manual, version 1.0, July 14 1987 52 */ 53 54 #include <sys/cdefs.h> 55 __KERNEL_RCSID(0, "$NetBSD: if_le_mca.c,v 1.17 2008/04/04 12:25:07 tsutsui Exp $"); 56 57 #include <sys/param.h> 58 #include <sys/systm.h> 59 #include <sys/mbuf.h> 60 #include <sys/syslog.h> 61 #include <sys/socket.h> 62 #include <sys/device.h> 63 64 #include <uvm/uvm_extern.h> 65 66 #include <net/if.h> 67 #include <net/if_ether.h> 68 #include <net/if_media.h> 69 70 #include <sys/cpu.h> 71 #include <sys/intr.h> 72 #include <sys/bus.h> 73 74 #include <dev/ic/lancereg.h> 75 #include <dev/ic/lancevar.h> 76 #include <dev/ic/am7990reg.h> 77 #include <dev/ic/am7990var.h> 78 79 #include <dev/mca/mcareg.h> 80 #include <dev/mca/mcavar.h> 81 #include <dev/mca/mcadevs.h> 82 83 #include <dev/mca/if_lereg.h> 84 85 int le_mca_match(device_t, cfdata_t, void *); 86 void le_mca_attach(device_t, device_t, void *); 87 88 struct le_mca_softc { 89 struct am7990_softc sc_am7990; /* glue to MI code */ 90 91 void *sc_ih; 92 bus_space_tag_t sc_memt; 93 bus_space_handle_t sc_memh; 94 }; 95 96 static void le_mca_wrcsr(struct lance_softc *, uint16_t, uint16_t); 97 static uint16_t le_mca_rdcsr(struct lance_softc *, uint16_t); 98 static void le_mca_hwreset(struct lance_softc *); 99 static int le_mca_intredge(void *); 100 101 static void le_mca_copytobuf(struct lance_softc *, void *, int, int); 102 static void le_mca_copyfrombuf(struct lance_softc *, void *, int, int); 103 static void le_mca_zerobuf(struct lance_softc *, int, int); 104 105 static inline void le_mca_wrreg(struct le_mca_softc *, int, int); 106 #define le_mca_set_RAP(sc, reg_number) \ 107 le_mca_wrreg(sc, reg_number, RAP | REGWRITE) 108 109 CFATTACH_DECL_NEW(le_mca, sizeof(struct le_mca_softc), 110 le_mca_match, le_mca_attach, NULL, NULL); 111 112 /* SKNET MC+ POS mapping */ 113 static const u_int8_t sknet_mcp_irq[] = { 114 3, 5, 10, 11 115 }; 116 static const u_int8_t sknet_mcp_media[] = { 117 IFM_ETHER|IFM_10_2, 118 IFM_ETHER|IFM_10_T, 119 IFM_ETHER|IFM_10_5, 120 0 121 }; 122 123 int 124 le_mca_match(device_t parent, cfdata_t cf, void *aux) 125 { 126 struct mca_attach_args *ma = aux; 127 128 switch(ma->ma_id) { 129 case MCA_PRODUCT_SKNETPER: 130 case MCA_PRODUCT_SKNETG: 131 return (1); 132 } 133 134 return (0); 135 } 136 137 void 138 le_mca_attach(device_t parent, device_t self, void *aux) 139 { 140 struct le_mca_softc *lesc = device_private(self); 141 struct lance_softc *sc = &lesc->sc_am7990.lsc; 142 struct mca_attach_args *ma = aux; 143 int i, pos2, pos3, pos4, irq, membase, supmedia=0; 144 const char *typestr; 145 146 sc->sc_dev = self; 147 148 /* 149 * SKNET Personal: 150 * 151 * POS register 2: (adf pos0) 152 * 153 * 7 6 5 4 3 2 1 0 154 * | \___/ \__ enable: 0=adapter disabled, 1=adapter enabled 155 * \ \____ Memory: 0xC0000-0xC3FFF + XX*0x4000 156 * \________ IRQ: 0=10 1=11 157 * 158 * 159 * SKNET MC+: 160 * POS register 2: (adf pos0) 161 * 162 * 7 6 5 4 3 2 1 0 163 * \___/ \ \__ enable: 0=adapter disabled, 1=adapter enabled 164 * \ \___ BootEPROM disable 165 * \_____ BootEPROM start address: 0xC0000 + XX*0x4000 166 * 167 * POS register 3: (adf pos1) 168 * 169 * 7 6 5 4 3 2 1 0 170 * 0 0 1 1 \_____/ 171 * \__ RAM: 0xC0000 + XX*0x4000 172 * 173 * POS register 4: (adf pos2) 174 * 175 * 7 6 5 4 3 2 1 0 176 * \_/ \_/ \_/ 177 * \ \ \__ Need to be reset to 0 0 after boot 178 * \ \_____ IRQ: 00=3 01=5 10=10 11=11 179 * \____________ Medium: 00=BNC 01=UTP 10=AUI 11=not allowed 180 */ 181 182 switch (ma->ma_id) { 183 case MCA_PRODUCT_SKNETPER: 184 typestr = "Personal MC2"; 185 186 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 187 irq = (pos2 & (1<<4)) ? 11 : 10; 188 membase = 0xc0000 + ((pos2 & 0x0e) >> 1) * 0x4000; 189 break; 190 case MCA_PRODUCT_SKNETG: 191 typestr = "MC2+"; 192 193 /* 194 * SKNET MC+ needs the driver to clear 0, 1 bits of pos4 195 * and explicitly set the enable bit. Somebody at Syskonnect 196 * was obviously misguided when the card was designed ... 197 */ 198 pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3); 199 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4); 200 if ((pos4 & 0x03) != 0) { 201 /* clear the bits 0, 1 */ 202 mca_conf_write(ma->ma_mc, ma->ma_slot, 4, 203 pos4 & ~0x03); 204 } 205 206 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 207 if ((pos2 & 0x01) == 0) { 208 /* enable the card */ 209 mca_conf_write(ma->ma_mc, ma->ma_slot, 2, pos2 | 0x01); 210 } 211 212 /* get irq and memory base */ 213 irq = sknet_mcp_irq[(pos4 & 0x0c) >> 2]; 214 membase = 0xc0000 + ((pos3 & 0x0f) * 0x4000); 215 216 /* Get configured media type */ 217 supmedia = sknet_mcp_media[(pos4 & 0xc0) >> 6]; 218 break; 219 default: 220 aprint_error(": unknown product %d\n", ma->ma_id); 221 return; 222 } 223 224 lesc->sc_memt = ma->ma_memt; 225 226 if (bus_space_map(lesc->sc_memt, membase, LE_MCA_MEMSIZE, 227 0, &lesc->sc_memh)) { 228 aprint_error(": can't map memory\n"); 229 return; 230 } 231 232 aprint_normal(" slot %d irq %d: SKNET %s Ethernet\n", 233 ma->ma_slot + 1, irq, typestr); 234 235 /* 236 * Extract the physical MAC address from the ROM. 237 */ 238 for (i = 0; i < ETHER_ADDR_LEN; i++) 239 sc->sc_enaddr[i] = bus_space_read_1(lesc->sc_memt, 240 lesc->sc_memh, LE_PROMOFF + i * 2); 241 242 sc->sc_conf3 = LE_C3_ACON; 243 sc->sc_addr = 0; 244 sc->sc_memsize = LE_MCA_RAMSIZE; 245 246 sc->sc_copytodesc = le_mca_copytobuf; 247 sc->sc_copyfromdesc = le_mca_copyfrombuf; 248 sc->sc_copytobuf = le_mca_copytobuf; 249 sc->sc_copyfrombuf = le_mca_copyfrombuf; 250 sc->sc_zerobuf = le_mca_zerobuf; 251 252 sc->sc_rdcsr = le_mca_rdcsr; 253 sc->sc_wrcsr = le_mca_wrcsr; 254 sc->sc_hwinit = NULL; 255 256 sc->sc_hwreset = le_mca_hwreset; 257 258 /* 259 * This is merely cosmetic since it's not possible to switch 260 * the media anyway, even for MC2+. 261 */ 262 if (supmedia != 0) { 263 sc->sc_supmedia = &supmedia; 264 sc->sc_nsupmedia = 1; 265 sc->sc_defaultmedia = supmedia; 266 } 267 268 lesc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET, 269 le_mca_intredge, sc); 270 if (lesc->sc_ih == NULL) { 271 aprint_error_dev(self, 272 "couldn't establish interrupt handler\n"); 273 return; 274 } 275 276 aprint_normal("%s", device_xname(self)); 277 am7990_config(&lesc->sc_am7990); 278 } 279 280 /* 281 * Controller interrupt. 282 */ 283 int 284 le_mca_intredge(void *arg) 285 { 286 287 /* 288 * We could check the IRQ bit of LE_PORT, but it seems to be unset 289 * at this time anyway. 290 */ 291 292 if (am7990_intr(arg) == 0) 293 return (0); 294 for(;;) 295 if (am7990_intr(arg) == 0) 296 return (1); 297 } 298 299 /* 300 * Push a value to LANCE controller. 301 */ 302 static inline void 303 le_mca_wrreg(struct le_mca_softc *sc, int val, int type) 304 { 305 306 /* 307 * This follows steps in SKNET Personal/MC2+ docs: 308 * 1. write reg. number to LANCE register 309 * 2. write value RESET | type to port 310 * 3. flag REGDO 311 * 4. wait until REGREQ is cleared 312 */ 313 if ((type & REGREAD) == 0) 314 bus_space_write_2(sc->sc_memt, sc->sc_memh, LE_LANCEREG, val); 315 bus_space_write_1(sc->sc_memt, sc->sc_memh, LE_PORT, 316 RESET | type); 317 bus_space_write_1(sc->sc_memt, sc->sc_memh, LE_REGIO, 318 REGDO); 319 /* Delay here doesn't seem to be necessary */ 320 /* delay(1); */ 321 while (bus_space_read_1(sc->sc_memt, sc->sc_memh, LE_PORT) & REGREQ) 322 ; 323 } 324 325 static void 326 le_mca_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 327 { 328 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 329 330 le_mca_set_RAP(lsc, port); 331 le_mca_wrreg(lsc, val, RDATA | REGWRITE); 332 } 333 334 static uint16_t 335 le_mca_rdcsr(struct lance_softc *sc, uint16_t port) 336 { 337 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 338 339 le_mca_set_RAP(lsc, port); 340 le_mca_wrreg(lsc, 0, RDATA | REGREAD); 341 342 return (bus_space_read_2(lsc->sc_memt, lsc->sc_memh, LE_LANCEREG)); 343 } 344 345 static void 346 le_mca_hwreset(struct lance_softc *sc) 347 { 348 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 349 350 bus_space_write_1(lsc->sc_memt, lsc->sc_memh, LE_PORT, 0); 351 delay(5); /* Delay >= 5 microseconds */ 352 bus_space_write_1(lsc->sc_memt, lsc->sc_memh, LE_PORT, RESET); 353 } 354 355 static void 356 le_mca_copytobuf(struct lance_softc *sc, void *from, int boff, int len) 357 { 358 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 359 360 bus_space_write_region_1(lsc->sc_memt, lsc->sc_memh, boff, 361 from, len); 362 } 363 364 static void 365 le_mca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len) 366 { 367 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 368 369 bus_space_read_region_1(lsc->sc_memt, lsc->sc_memh, boff, 370 to, len); 371 } 372 373 static void 374 le_mca_zerobuf(struct lance_softc *sc, int boff, int len) 375 { 376 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 377 378 bus_space_set_region_1(lsc->sc_memt, lsc->sc_memh, boff, 379 0x00, len); 380 } 381
Indexes created Tue Sep 30 11:09:46 GMT 2025