if_le_mca.c revision 1.17.2.1
1 /* $NetBSD: if_le_mca.c,v 1.17.2.1 2008/05/18 12:34:09 yamt 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 1.17.2.1 2008/05/18 12:34:09 yamt 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 <uvm/uvm_extern.h> 58 59 #include <net/if.h> 60 #include <net/if_ether.h> 61 #include <net/if_media.h> 62 63 #include <sys/cpu.h> 64 #include <sys/intr.h> 65 #include <sys/bus.h> 66 67 #include <dev/ic/lancereg.h> 68 #include <dev/ic/lancevar.h> 69 #include <dev/ic/am7990reg.h> 70 #include <dev/ic/am7990var.h> 71 72 #include <dev/mca/mcareg.h> 73 #include <dev/mca/mcavar.h> 74 #include <dev/mca/mcadevs.h> 75 76 #include <dev/mca/if_lereg.h> 77 78 int le_mca_match(device_t, cfdata_t, void *); 79 void le_mca_attach(device_t, device_t, void *); 80 81 struct le_mca_softc { 82 struct am7990_softc sc_am7990; /* glue to MI code */ 83 84 void *sc_ih; 85 bus_space_tag_t sc_memt; 86 bus_space_handle_t sc_memh; 87 }; 88 89 static void le_mca_wrcsr(struct lance_softc *, uint16_t, uint16_t); 90 static uint16_t le_mca_rdcsr(struct lance_softc *, uint16_t); 91 static void le_mca_hwreset(struct lance_softc *); 92 static int le_mca_intredge(void *); 93 94 static void le_mca_copytobuf(struct lance_softc *, void *, int, int); 95 static void le_mca_copyfrombuf(struct lance_softc *, void *, int, int); 96 static void le_mca_zerobuf(struct lance_softc *, int, int); 97 98 static inline void le_mca_wrreg(struct le_mca_softc *, int, int); 99 #define le_mca_set_RAP(sc, reg_number) \ 100 le_mca_wrreg(sc, reg_number, RAP | REGWRITE) 101 102 CFATTACH_DECL_NEW(le_mca, sizeof(struct le_mca_softc), 103 le_mca_match, le_mca_attach, NULL, NULL); 104 105 /* SKNET MC+ POS mapping */ 106 static const u_int8_t sknet_mcp_irq[] = { 107 3, 5, 10, 11 108 }; 109 static const u_int8_t sknet_mcp_media[] = { 110 IFM_ETHER|IFM_10_2, 111 IFM_ETHER|IFM_10_T, 112 IFM_ETHER|IFM_10_5, 113 0 114 }; 115 116 int 117 le_mca_match(device_t parent, cfdata_t cf, void *aux) 118 { 119 struct mca_attach_args *ma = aux; 120 121 switch(ma->ma_id) { 122 case MCA_PRODUCT_SKNETPER: 123 case MCA_PRODUCT_SKNETG: 124 return (1); 125 } 126 127 return (0); 128 } 129 130 void 131 le_mca_attach(device_t parent, device_t self, void *aux) 132 { 133 struct le_mca_softc *lesc = device_private(self); 134 struct lance_softc *sc = &lesc->sc_am7990.lsc; 135 struct mca_attach_args *ma = aux; 136 int i, pos2, pos3, pos4, irq, membase, supmedia=0; 137 const char *typestr; 138 139 sc->sc_dev = self; 140 141 /* 142 * SKNET Personal: 143 * 144 * POS register 2: (adf pos0) 145 * 146 * 7 6 5 4 3 2 1 0 147 * | \___/ \__ enable: 0=adapter disabled, 1=adapter enabled 148 * \ \____ Memory: 0xC0000-0xC3FFF + XX*0x4000 149 * \________ IRQ: 0=10 1=11 150 * 151 * 152 * SKNET MC+: 153 * POS register 2: (adf pos0) 154 * 155 * 7 6 5 4 3 2 1 0 156 * \___/ \ \__ enable: 0=adapter disabled, 1=adapter enabled 157 * \ \___ BootEPROM disable 158 * \_____ BootEPROM start address: 0xC0000 + XX*0x4000 159 * 160 * POS register 3: (adf pos1) 161 * 162 * 7 6 5 4 3 2 1 0 163 * 0 0 1 1 \_____/ 164 * \__ RAM: 0xC0000 + XX*0x4000 165 * 166 * POS register 4: (adf pos2) 167 * 168 * 7 6 5 4 3 2 1 0 169 * \_/ \_/ \_/ 170 * \ \ \__ Need to be reset to 0 0 after boot 171 * \ \_____ IRQ: 00=3 01=5 10=10 11=11 172 * \____________ Medium: 00=BNC 01=UTP 10=AUI 11=not allowed 173 */ 174 175 switch (ma->ma_id) { 176 case MCA_PRODUCT_SKNETPER: 177 typestr = "Personal MC2"; 178 179 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 180 irq = (pos2 & (1<<4)) ? 11 : 10; 181 membase = 0xc0000 + ((pos2 & 0x0e) >> 1) * 0x4000; 182 break; 183 case MCA_PRODUCT_SKNETG: 184 typestr = "MC2+"; 185 186 /* 187 * SKNET MC+ needs the driver to clear 0, 1 bits of pos4 188 * and explicitly set the enable bit. Somebody at Syskonnect 189 * was obviously misguided when the card was designed ... 190 */ 191 pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3); 192 pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4); 193 if ((pos4 & 0x03) != 0) { 194 /* clear the bits 0, 1 */ 195 mca_conf_write(ma->ma_mc, ma->ma_slot, 4, 196 pos4 & ~0x03); 197 } 198 199 pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2); 200 if ((pos2 & 0x01) == 0) { 201 /* enable the card */ 202 mca_conf_write(ma->ma_mc, ma->ma_slot, 2, pos2 | 0x01); 203 } 204 205 /* get irq and memory base */ 206 irq = sknet_mcp_irq[(pos4 & 0x0c) >> 2]; 207 membase = 0xc0000 + ((pos3 & 0x0f) * 0x4000); 208 209 /* Get configured media type */ 210 supmedia = sknet_mcp_media[(pos4 & 0xc0) >> 6]; 211 break; 212 default: 213 aprint_error(": unknown product %d\n", ma->ma_id); 214 return; 215 } 216 217 lesc->sc_memt = ma->ma_memt; 218 219 if (bus_space_map(lesc->sc_memt, membase, LE_MCA_MEMSIZE, 220 0, &lesc->sc_memh)) { 221 aprint_error(": can't map memory\n"); 222 return; 223 } 224 225 aprint_normal(" slot %d irq %d: SKNET %s Ethernet\n", 226 ma->ma_slot + 1, irq, typestr); 227 228 /* 229 * Extract the physical MAC address from the ROM. 230 */ 231 for (i = 0; i < ETHER_ADDR_LEN; i++) 232 sc->sc_enaddr[i] = bus_space_read_1(lesc->sc_memt, 233 lesc->sc_memh, LE_PROMOFF + i * 2); 234 235 sc->sc_conf3 = LE_C3_ACON; 236 sc->sc_addr = 0; 237 sc->sc_memsize = LE_MCA_RAMSIZE; 238 239 sc->sc_copytodesc = le_mca_copytobuf; 240 sc->sc_copyfromdesc = le_mca_copyfrombuf; 241 sc->sc_copytobuf = le_mca_copytobuf; 242 sc->sc_copyfrombuf = le_mca_copyfrombuf; 243 sc->sc_zerobuf = le_mca_zerobuf; 244 245 sc->sc_rdcsr = le_mca_rdcsr; 246 sc->sc_wrcsr = le_mca_wrcsr; 247 sc->sc_hwinit = NULL; 248 249 sc->sc_hwreset = le_mca_hwreset; 250 251 /* 252 * This is merely cosmetic since it's not possible to switch 253 * the media anyway, even for MC2+. 254 */ 255 if (supmedia != 0) { 256 sc->sc_supmedia = &supmedia; 257 sc->sc_nsupmedia = 1; 258 sc->sc_defaultmedia = supmedia; 259 } 260 261 lesc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET, 262 le_mca_intredge, sc); 263 if (lesc->sc_ih == NULL) { 264 aprint_error_dev(self, 265 "couldn't establish interrupt handler\n"); 266 return; 267 } 268 269 aprint_normal("%s", device_xname(self)); 270 am7990_config(&lesc->sc_am7990); 271 } 272 273 /* 274 * Controller interrupt. 275 */ 276 int 277 le_mca_intredge(void *arg) 278 { 279 280 /* 281 * We could check the IRQ bit of LE_PORT, but it seems to be unset 282 * at this time anyway. 283 */ 284 285 if (am7990_intr(arg) == 0) 286 return (0); 287 for(;;) 288 if (am7990_intr(arg) == 0) 289 return (1); 290 } 291 292 /* 293 * Push a value to LANCE controller. 294 */ 295 static inline void 296 le_mca_wrreg(struct le_mca_softc *sc, int val, int type) 297 { 298 299 /* 300 * This follows steps in SKNET Personal/MC2+ docs: 301 * 1. write reg. number to LANCE register 302 * 2. write value RESET | type to port 303 * 3. flag REGDO 304 * 4. wait until REGREQ is cleared 305 */ 306 if ((type & REGREAD) == 0) 307 bus_space_write_2(sc->sc_memt, sc->sc_memh, LE_LANCEREG, val); 308 bus_space_write_1(sc->sc_memt, sc->sc_memh, LE_PORT, 309 RESET | type); 310 bus_space_write_1(sc->sc_memt, sc->sc_memh, LE_REGIO, 311 REGDO); 312 /* Delay here doesn't seem to be necessary */ 313 /* delay(1); */ 314 while (bus_space_read_1(sc->sc_memt, sc->sc_memh, LE_PORT) & REGREQ) 315 ; 316 } 317 318 static void 319 le_mca_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 320 { 321 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 322 323 le_mca_set_RAP(lsc, port); 324 le_mca_wrreg(lsc, val, RDATA | REGWRITE); 325 } 326 327 static uint16_t 328 le_mca_rdcsr(struct lance_softc *sc, uint16_t port) 329 { 330 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 331 332 le_mca_set_RAP(lsc, port); 333 le_mca_wrreg(lsc, 0, RDATA | REGREAD); 334 335 return (bus_space_read_2(lsc->sc_memt, lsc->sc_memh, LE_LANCEREG)); 336 } 337 338 static void 339 le_mca_hwreset(struct lance_softc *sc) 340 { 341 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 342 343 bus_space_write_1(lsc->sc_memt, lsc->sc_memh, LE_PORT, 0); 344 delay(5); /* Delay >= 5 microseconds */ 345 bus_space_write_1(lsc->sc_memt, lsc->sc_memh, LE_PORT, RESET); 346 } 347 348 static void 349 le_mca_copytobuf(struct lance_softc *sc, void *from, int boff, int len) 350 { 351 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 352 353 bus_space_write_region_1(lsc->sc_memt, lsc->sc_memh, boff, 354 from, len); 355 } 356 357 static void 358 le_mca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len) 359 { 360 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 361 362 bus_space_read_region_1(lsc->sc_memt, lsc->sc_memh, boff, 363 to, len); 364 } 365 366 static void 367 le_mca_zerobuf(struct lance_softc *sc, int boff, int len) 368 { 369 struct le_mca_softc *lsc = (struct le_mca_softc *)sc; 370 371 bus_space_set_region_1(lsc->sc_memt, lsc->sc_memh, boff, 372 0x00, len); 373 } 374
Indexes created Wed Oct 22 13:09:56 GMT 2025