1 /* $NetBSD: if_le_mca.c,v 1.19 2010/11/13 13:52:04 uebayasi 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 * 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 * Driver for SKNET Personal and MC2+ cards, which are AMD Lance 7990 based 34 * cards made by Syskonnect, former Schneider & Koch Datensysteme GmbH. 35 * 36 * Syskonnect was very helpful and provided docs for these cards promptly. 37 * I wish all vendors would be like that! 38 * I'd like to thank to Alfred Arnold, author of the Linux driver, for 39 * giving me contact to The Right Syskonnect person, too :-) 40 * 41 * Sources: 42 * SKNET MC+ Technical Manual, version 1.1, July 21 1993 43 * SKNET personal Technisches Manual, version 1.2, April 14 1988 44 * SKNET junior Technisches Manual, version 1.0, July 14 1987 45 */ 46 47 #include <sys/cdefs.h> 48 __KERNEL_RCSID(0, "$NetBSD: if_le_mca.c,v 1.19 2010/11/13 13:52:04 uebayasi Exp $"); 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/mbuf.h> 53 #include <sys/syslog.h> 54 #include <sys/socket.h> 55 #include <sys/device.h> 56 57 #include <net/if.h> 58 #include <net/if_ether.h> 59 #include <net/if_media.h> 60 61 #include <sys/cpu.h> 62 #include <sys/intr.h> 63 #include <sys/bus.h> 64 65 #include <dev/ic/lancereg.h> 66 #include <dev/ic/lancevar.h> 67 #include <dev/ic/am7990reg.h> 68 #include <dev/ic/am7990var.h> 69 70 #include <dev/mca/mcareg.h> 71 #include <dev/mca/mcavar.h> 72 #include <dev/mca/mcadevs.h> 73 74 #include <dev/mca/if_lereg.h> 75 76 int le_mca_match(device_t, cfdata_t, void *); 77 void le_mca_attach(device_t, device_t, void *); 78 79 struct le_mca_softc { 80 struct am7990_softc sc_am7990; /* glue to MI code */ 81 82 void *sc_ih; 83 bus_space_tag_t sc_memt; 84 bus_space_handle_t sc_memh; 85 }; 86 87 static void le_mca_wrcsr(struct lance_softc *, uint16_t, uint16_t); 88 static uint16_t le_mca_rdcsr(struct lance_softc *, uint16_t); 89 static void le_mca_hwreset(struct lance_softc *); 90 static int le_mca_intredge(void *); 91 92 static void le_mca_copytobuf(struct lance_softc *, void *, int, int); 93 static void le_mca_copyfrombuf(struct lance_softc *, void *, int, int); 94 static void le_mca_zerobuf(struct lance_softc *, int, int); 95 96 static inline void le_mca_wrreg(struct le_mca_softc *, int, int); 97 #define le_mca_set_RAP(sc, reg_number) \ 98 le_mca_wrreg(sc, reg_number, RAP | REGWRITE) 99 100 CFATTACH_DECL_NEW(le_mca, sizeof(struct le_mca_softc), 101 le_mca_match, le_mca_attach, NULL, NULL); 102 103 /* SKNET MC+ POS mapping */ 104 static const u_int8_t sknet_mcp_irq[] = { 105 3, 5, 10, 11 106 }; 107 static const u_int8_t sknet_mcp_media[] = { 108 IFM_ETHER|IFM_10_2, 109 IFM_ETHER|IFM_10_T, 110 IFM_ETHER|IFM_10_5, 111 0 112 }; 113 114 int 115 le_mca_match(device_t parent, cfdata_t cf, void *aux) 116 { 117 struct mca_attach_args *ma = aux; 118 119 switch(ma->ma_id) { 120 case MCA_PRODUCT_SKNETPER: 121 case MCA_PRODUCT_SKNETG: 122 return (1); 123 } 124 125 return (0); 126 } 127 128 void 129 le_mca_attach(device_t parent, device_t self, void *aux) 130 { 131 struct le_mca_softc *lesc = device_private(self); 132 struct lance_softc *sc = &lesc->sc_am7990.lsc; 133 struct mca_attach_args *ma = aux; 134 int i, pos2, pos3, pos4, irq, membase, supmedia=0; 135 const char *typestr; 136 137 sc->sc_dev = self; 138 139 /* 140 * SKNET Personal: 141 * 142 * POS register 2: (adf pos0) 143 * 144 * 7 6 5 4 3 2 1 0 145 * | \___/ \__ enable: 0=adapter disabled, 1=adapter enabled 146 * \ \____ Memory: 0xC0000-0xC3FFF + XX*0x4000 147 * \________ IRQ: 0=10 1=11 148 * 149 * 150 * SKNET MC+: 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 * \ \___ BootEPROM disable 156 * \_____ BootEPROM start address: 0xC0000 + XX*0x4000 157 * 158 * POS register 3: (adf pos1) 159 * 160 * 7 6 5 4 3 2 1 0 161 * 0 0 1 1 \_____/ 162 * \__ RAM: 0xC0000 + XX*0x4000 163 * 164 * POS register 4: (adf pos2) 165 * 166 * 7 6 5 4 3 2 1 0 167 * \_/ \_/ \_/ 168 * \ \ \__ Need to be reset to 0 0 after boot 169 * \ \_____ IRQ: 00=3 01=5 10=10 11=11 170 * \____________ Medium: 00=BNC 01=UTP 10=AUI 11=not allowed 171 */ 172 173 switch (ma->ma_id) { 174 case MCA_PRODUCT_SKNETPER: 175 typestr = "Personal MC2"; 176 177 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 178 irq = (pos2 & (1<<4)) ? 11 : 10; 179 membase = 0xc0000 + ((pos2 & 0x0e) >> 1) * 0x4000; 180 break; 181 case MCA_PRODUCT_SKNETG: 182 typestr = "MC2+"; 183 184 /* 185 * SKNET MC+ needs the driver to clear 0, 1 bits of pos4 186 * and explicitly set the enable bit. Somebody at Syskonnect 187 * was obviously misguided when the card was designed ... 188 */ 189 pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3); 190 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4); 191 if ((pos4 & 0x03) != 0) { 192 /* clear the bits 0, 1 */ 193 mca_conf_write(ma->ma_mc, ma->ma_slot, 4, 194 pos4 & ~0x03); 195 } 196 197 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 198 if ((pos2 & 0x01) == 0) { 199 /* enable the card */ 200 mca_conf_write(ma->ma_mc, ma->ma_slot, 2, pos2 | 0x01); 201 } 202 203 /* get irq and memory base */ 204 irq = sknet_mcp_irq[(pos4 & 0x0c) >> 2]; 205 membase = 0xc0000 + ((pos3 & 0x0f) * 0x4000); 206 207 /* Get configured media type */ 208 supmedia = sknet_mcp_media[(pos4 & 0xc0) >> 6]; 209 break; 210 default: 211 aprint_error(": unknown product %d\n", ma->ma_id); 212 return; 213 } 214 215 lesc->sc_memt = ma->ma_memt; 216 217 if (bus_space_map(lesc->sc_memt, membase, LE_MCA_MEMSIZE, 218 0, &lesc->sc_memh)) { 219 aprint_error(": can't map memory\n"); 220 return; 221 } 222 223 aprint_normal(" slot %d irq %d: SKNET %s Ethernet\n", 224 ma->ma_slot + 1, irq, typestr); 225 226 /* 227 * Extract the physical MAC address from the ROM. 228 */ 229 for (i = 0; i < ETHER_ADDR_LEN; i++) 230 sc->sc_enaddr[i] = bus_space_read_1(lesc->sc_memt, 231 lesc->sc_memh, LE_PROMOFF + i * 2); 232 233 sc->sc_conf3 = LE_C3_ACON; 234 sc->sc_addr = 0; 235 sc->sc_memsize = LE_MCA_RAMSIZE; 236 237 sc->sc_copytodesc = le_mca_copytobuf; 238 sc->sc_copyfromdesc = le_mca_copyfrombuf; 239 sc->sc_copytobuf = le_mca_copytobuf; 240 sc->sc_copyfrombuf = le_mca_copyfrombuf; 241 sc->sc_zerobuf = le_mca_zerobuf; 242 243 sc->sc_rdcsr = le_mca_rdcsr; 244 sc->sc_wrcsr = le_mca_wrcsr; 245 sc->sc_hwinit = NULL; 246 247 sc->sc_hwreset = le_mca_hwreset; 248 249 /* 250 * This is merely cosmetic since it's not possible to switch 251 * the media anyway, even for MC2+. 252 */ 253 if (supmedia != 0) { 254 sc->sc_supmedia = &supmedia; 255 sc->sc_nsupmedia = 1; 256 sc->sc_defaultmedia = supmedia; 257 } 258 259 lesc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET, 260 le_mca_intredge, sc); 261 if (lesc->sc_ih == NULL) { 262 aprint_error_dev(self, 263 "couldn't establish interrupt handler\n"); 264 return; 265 } 266 267 aprint_normal("%s", device_xname(self)); 268 am7990_config(&lesc->sc_am7990); 269 } 270 271 /* 272 * Controller interrupt. 273 */ 274 int 275 le_mca_intredge(void *arg) 276 { 277 278 /* 279 * We could check the IRQ bit of LE_PORT, but it seems to be unset 280 * at this time anyway. 281 */ 282 283 if (am7990_intr(arg) == 0) 284 return (0); 285 for(;;) 286 if (am7990_intr(arg) == 0) 287 return (1); 288 } 289 290 /* 291 * Push a value to LANCE controller. 292 */ 293 static inline void 294 le_mca_wrreg(struct le_mca_softc *sc, int val, int type) 295 { 296 297 /* 298 * This follows steps in SKNET Personal/MC2+ docs: 299 * 1. write reg. number to LANCE register 300 * 2. write value RESET | type to port 301 * 3. flag REGDO 302 * 4. wait until REGREQ is cleared 303 */ 304 if ((type & REGREAD) == 0) 305 bus_space_write_2(sc->sc_memt, sc->sc_memh, LE_LANCEREG, val); 306 bus_space_write_1(sc->sc_memt, sc->sc_memh, LE_PORT, 307 RESET | type); 308 bus_space_write_1(sc->sc_memt, sc->sc_memh, LE_REGIO, 309 REGDO); 310 /* Delay here doesn't seem to be necessary */ 311 /* delay(1); */ 312 while (bus_space_read_1(sc->sc_memt, sc->sc_memh, LE_PORT) & REGREQ) 313 ; 314 } 315 316 static void 317 le_mca_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 318 { 319 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 320 321 le_mca_set_RAP(lsc, port); 322 le_mca_wrreg(lsc, val, RDATA | REGWRITE); 323 } 324 325 static uint16_t 326 le_mca_rdcsr(struct lance_softc *sc, uint16_t port) 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, 0, RDATA | REGREAD); 332 333 return (bus_space_read_2(lsc->sc_memt, lsc->sc_memh, LE_LANCEREG)); 334 } 335 336 static void 337 le_mca_hwreset(struct lance_softc *sc) 338 { 339 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 340 341 bus_space_write_1(lsc->sc_memt, lsc->sc_memh, LE_PORT, 0); 342 delay(5); /* Delay >= 5 microseconds */ 343 bus_space_write_1(lsc->sc_memt, lsc->sc_memh, LE_PORT, RESET); 344 } 345 346 static void 347 le_mca_copytobuf(struct lance_softc *sc, void *from, int boff, int len) 348 { 349 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 350 351 bus_space_write_region_1(lsc->sc_memt, lsc->sc_memh, boff, 352 from, len); 353 } 354 355 static void 356 le_mca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len) 357 { 358 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 359 360 bus_space_read_region_1(lsc->sc_memt, lsc->sc_memh, boff, 361 to, len); 362 } 363 364 static void 365 le_mca_zerobuf(struct lance_softc *sc, int boff, int len) 366 { 367 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 368 369 bus_space_set_region_1(lsc->sc_memt, lsc->sc_memh, boff, 370 0x00, len); 371 } 372