1 /* $NetBSD: if_le_mca.c,v 1.16 2007/10/19 12:00:35 ad 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 1.16 2007/10/19 12:00:35 ad 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(struct device *, struct cfdata *, void *); 86 void le_mca_attach(struct device *, struct device *, 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 *, u_int16_t, u_int16_t); 97 static u_int16_t le_mca_rdcsr(struct lance_softc *, u_int16_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(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(struct device *parent, struct cfdata *cf, 125 void *aux) 126 { 127 struct mca_attach_args *ma = aux; 128 129 switch(ma->ma_id) { 130 case MCA_PRODUCT_SKNETPER: 131 case MCA_PRODUCT_SKNETG: 132 return (1); 133 } 134 135 return (0); 136 } 137 138 void 139 le_mca_attach(struct device *parent, struct device *self, void *aux) 140 { 141 struct le_mca_softc *lesc = device_private(self); 142 struct lance_softc *sc = &lesc->sc_am7990.lsc; 143 struct mca_attach_args *ma = aux; 144 int i, pos2, pos3, pos4, irq, membase, supmedia=0; 145 const char *typestr; 146 147 /* 148 * SKNET Personal: 149 * 150 * POS register 2: (adf pos0) 151 * 152 * 7 6 5 4 3 2 1 0 153 * | \___/ \__ enable: 0=adapter disabled, 1=adapter enabled 154 * \ \____ Memory: 0xC0000-0xC3FFF + XX*0x4000 155 * \________ IRQ: 0=10 1=11 156 * 157 * 158 * SKNET MC+: 159 * POS register 2: (adf pos0) 160 * 161 * 7 6 5 4 3 2 1 0 162 * \___/ \ \__ enable: 0=adapter disabled, 1=adapter enabled 163 * \ \___ BootEPROM disable 164 * \_____ BootEPROM start address: 0xC0000 + XX*0x4000 165 * 166 * POS register 3: (adf pos1) 167 * 168 * 7 6 5 4 3 2 1 0 169 * 0 0 1 1 \_____/ 170 * \__ RAM: 0xC0000 + XX*0x4000 171 * 172 * POS register 4: (adf pos2) 173 * 174 * 7 6 5 4 3 2 1 0 175 * \_/ \_/ \_/ 176 * \ \ \__ Need to be reset to 0 0 after boot 177 * \ \_____ IRQ: 00=3 01=5 10=10 11=11 178 * \____________ Medium: 00=BNC 01=UTP 10=AUI 11=not allowed 179 */ 180 181 switch (ma->ma_id) { 182 case MCA_PRODUCT_SKNETPER: 183 typestr = "Personal MC2"; 184 185 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 186 irq = (pos2 & (1<<4)) ? 11 : 10; 187 membase = 0xc0000 + ((pos2 & 0x0e) >> 1) * 0x4000; 188 break; 189 case MCA_PRODUCT_SKNETG: 190 typestr = "MC2+"; 191 192 /* 193 * SKNET MC+ needs the driver to clear 0, 1 bits of pos4 194 * and explicitly set the enable bit. Somebody at Syskonnect 195 * was obviously misguided when the card was designed ... 196 */ 197 pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3); 198 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4); 199 if ((pos4 & 0x03) != 0) { 200 /* clear the bits 0, 1 */ 201 mca_conf_write(ma->ma_mc, ma->ma_slot, 4, 202 pos4 & ~0x03); 203 } 204 205 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 206 if ((pos2 & 0x01) == 0) { 207 /* enable the card */ 208 mca_conf_write(ma->ma_mc, ma->ma_slot, 2, pos2 | 0x01); 209 } 210 211 /* get irq and memory base */ 212 irq = sknet_mcp_irq[(pos4 & 0x0c) >> 2]; 213 membase = 0xc0000 + ((pos3 & 0x0f) * 0x4000); 214 215 /* Get configured media type */ 216 supmedia = sknet_mcp_media[(pos4 & 0xc0) >> 6]; 217 break; 218 default: 219 printf("%s: unknown product %d\n", sc->sc_dev.dv_xname, 220 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 printf("%s: can't map memory\n", sc->sc_dev.dv_xname); 229 return; 230 } 231 232 printf(" 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 printf("%s: couldn't establish interrupt handler\n", 272 sc->sc_dev.dv_xname); 273 return; 274 } 275 276 printf("%s", sc->sc_dev.dv_xname); 277 am7990_config(&lesc->sc_am7990); 278 } 279 280 /* 281 * Controller interrupt. 282 */ 283 int 284 le_mca_intredge(arg) 285 void *arg; 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(sc, val, type) 304 struct le_mca_softc *sc; 305 int val, type; 306 { 307 /* 308 * This follows steps in SKNET Personal/MC2+ docs: 309 * 1. write reg. number to LANCE register 310 * 2. write value RESET | type to port 311 * 3. flag REGDO 312 * 4. wait until REGREQ is cleared 313 */ 314 if ((type & REGREAD) == 0) 315 bus_space_write_2(sc->sc_memt, sc->sc_memh, LE_LANCEREG, val); 316 bus_space_write_1(sc->sc_memt, sc->sc_memh, LE_PORT, 317 RESET | type); 318 bus_space_write_1(sc->sc_memt, sc->sc_memh, LE_REGIO, 319 REGDO); 320 /* Delay here doesn't seem to be necessary */ 321 /* delay(1); */ 322 while(bus_space_read_1(sc->sc_memt, sc->sc_memh, LE_PORT) & REGREQ) 323 ; 324 } 325 326 static void 327 le_mca_wrcsr(sc, port, val) 328 struct lance_softc *sc; 329 u_int16_t port, val; 330 { 331 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 332 333 le_mca_set_RAP(lsc, port); 334 le_mca_wrreg(lsc, val, RDATA | REGWRITE); 335 } 336 337 static u_int16_t 338 le_mca_rdcsr(sc, port) 339 struct lance_softc *sc; 340 u_int16_t port; 341 { 342 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 343 344 le_mca_set_RAP(lsc, port); 345 le_mca_wrreg(lsc, 0, RDATA | REGREAD); 346 347 return (bus_space_read_2(lsc->sc_memt, lsc->sc_memh, LE_LANCEREG)); 348 } 349 350 static void 351 le_mca_hwreset(sc) 352 struct lance_softc *sc; 353 { 354 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 355 356 bus_space_write_1(lsc->sc_memt, lsc->sc_memh, LE_PORT, 0); 357 delay(5); /* Delay >= 5 microseconds */ 358 bus_space_write_1(lsc->sc_memt, lsc->sc_memh, LE_PORT, RESET); 359 } 360 361 static void 362 le_mca_copytobuf(struct lance_softc *sc, void *from, int boff, int len) 363 { 364 struct le_mca_softc *dsc = (void *) sc; 365 366 bus_space_write_region_1(dsc->sc_memt, dsc->sc_memh, boff, 367 from, len); 368 } 369 370 static void 371 le_mca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len) 372 { 373 struct le_mca_softc *dsc = (void *) sc; 374 375 bus_space_read_region_1(dsc->sc_memt, dsc->sc_memh, boff, 376 to, len); 377 } 378 379 static void 380 le_mca_zerobuf(struct lance_softc *sc, int boff, int len) 381 { 382 struct le_mca_softc *dsc = (void *) sc; 383 384 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, boff, 385 0x00, len); 386 } 387