Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/en/if_en_pci.c
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1 /* $NetBSD: if_en_pci.c,v 1.1 1996/06/22 02:00:31 chuck Exp $ */ 2 /*- 3 * Copyright (c) 1996 Charles D. Cranor and Washington University. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Charles D. Cranor and 17 * Washington University. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 /* 38 * i f _ e n _ p c i . c 39 * 40 * author: Chuck Cranor <chuck@ccrc.wustl.edu> 41 * started: spring, 1996. 42 * 43 * FreeBSD PCI glue for the eni155p card. 44 * thanks to Matt Thomas for figuring out FreeBSD vs NetBSD vs etc.. diffs. 45 */ 46 47 #include <sys/cdefs.h> 48 __FBSDID("$FreeBSD$"); 49 50 #include <sys/param.h> 51 #include <sys/kernel.h> 52 #include <sys/module.h> 53 #include <sys/systm.h> 54 #include <sys/socket.h> 55 #include <sys/sysctl.h> 56 #include <sys/condvar.h> 57 58 #include <sys/bus.h> 59 #include <machine/bus.h> 60 #include <sys/rman.h> 61 #include <machine/resource.h> 62 63 #include <vm/uma.h> 64 65 #include <net/if.h> 66 #include <net/if_atm.h> 67 #include <net/if_media.h> 68 #include <net/if_types.h> 69 70 #include <dev/pci/pcivar.h> 71 #include <dev/pci/pcireg.h> 72 73 #include <dev/utopia/utopia.h> 74 #include <dev/en/midwayreg.h> 75 #include <dev/en/midwayvar.h> 76 77 MODULE_DEPEND(en, pci, 1, 1, 1); 78 MODULE_DEPEND(en, atm, 1, 1, 1); 79 MODULE_DEPEND(en, utopia, 1, 1, 1); 80 81 /* 82 * local structures 83 */ 84 struct en_pci_softc { 85 /* bus independent stuff */ 86 struct en_softc esc; /* includes "device" structure */ 87 88 /* freebsd newbus glue */ 89 struct resource *res; /* resource descriptor for registers */ 90 struct resource *irq; /* resource descriptor for interrupt */ 91 void *ih; /* interrupt handle */ 92 }; 93 94 static void eni_get_macaddr(device_t, struct en_pci_softc *); 95 static void adp_get_macaddr(struct en_pci_softc *); 96 97 /* 98 * address of config base memory address register in PCI config space 99 * (this is card specific) 100 */ 101 #define PCI_CBMA PCIR_BAR(0) 102 103 /* 104 * tonga (pci bridge). ENI cards only! 105 */ 106 #define EN_TONGA 0x60 /* PCI config addr of tonga reg */ 107 108 #define TONGA_SWAP_DMA 0x80 /* endian swap control */ 109 #define TONGA_SWAP_BYTE 0x40 110 #define TONGA_SWAP_WORD 0x20 111 #define TONGA_READ_MULT 0x00 112 #define TONGA_READ_MEM 0x04 113 #define TONGA_READ_IVAN 0x08 114 #define TONGA_READ_KEN 0x0C 115 116 /* 117 * adaptec pci bridge. ADP cards only! 118 */ 119 #define ADP_PCIREG 0x050040 /* PCI control register */ 120 121 #define ADP_PCIREG_RESET 0x1 /* reset card */ 122 #define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */ 123 #define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */ 124 #define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */ 125 126 #define PCI_VENDOR_EFFICIENTNETS 0x111a /* Efficent Networks */ 127 #define PCI_PRODUCT_EFFICIENTNETS_ENI155PF 0x0000 /* ENI-155P ATM */ 128 #define PCI_PRODUCT_EFFICIENTNETS_ENI155PA 0x0002 /* ENI-155P ATM */ 129 #define PCI_VENDOR_ADP 0x9004 /* adaptec */ 130 #define PCI_PRODUCT_ADP_AIC5900 0x5900 131 #define PCI_PRODUCT_ADP_AIC5905 0x5905 132 #define PCI_VENDOR(x) ((x) & 0xFFFF) 133 #define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF) 134 135 /* 136 * bus specific reset function [ADP only!] 137 */ 138 static void 139 adp_busreset(void *v) 140 { 141 struct en_softc *sc = (struct en_softc *)v; 142 uint32_t dummy; 143 144 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, 145 ADP_PCIREG_RESET); 146 DELAY(1000); /* let it reset */ 147 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 148 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, 149 (ADP_PCIREG_SWAP_DMA | ADP_PCIREG_IENABLE)); 150 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 151 if ((dummy & (ADP_PCIREG_SWAP_WORD | ADP_PCIREG_SWAP_DMA)) != 152 ADP_PCIREG_SWAP_DMA) 153 device_printf(sc->dev, "%s: Adaptec ATM did NOT reset!\n", 154 __func__); 155 } 156 157 /***********************************************************************/ 158 159 /* 160 * autoconfig stuff 161 */ 162 static int 163 en_pci_probe(device_t dev) 164 { 165 166 switch (pci_get_vendor(dev)) { 167 168 case PCI_VENDOR_EFFICIENTNETS: 169 switch (pci_get_device(dev)) { 170 171 case PCI_PRODUCT_EFFICIENTNETS_ENI155PF: 172 case PCI_PRODUCT_EFFICIENTNETS_ENI155PA: 173 device_set_desc(dev, "Efficient Networks ENI-155p"); 174 return (BUS_PROBE_DEFAULT); 175 } 176 break; 177 178 case PCI_VENDOR_ADP: 179 switch (pci_get_device(dev)) { 180 181 case PCI_PRODUCT_ADP_AIC5900: 182 case PCI_PRODUCT_ADP_AIC5905: 183 device_set_desc(dev, "Adaptec 155 ATM"); 184 return (BUS_PROBE_DEFAULT); 185 } 186 break; 187 } 188 return (ENXIO); 189 } 190 191 static int 192 en_pci_attach(device_t dev) 193 { 194 struct en_softc *sc; 195 struct en_pci_softc *scp; 196 int rid, error = 0; 197 198 sc = device_get_softc(dev); 199 scp = (struct en_pci_softc *)sc; 200 sc->dev = dev; 201 sc->ifp = if_alloc(IFT_ATM); 202 if (sc->ifp == NULL) { 203 device_printf(dev, "can not if_alloc()\n"); 204 error = ENOSPC; 205 goto fail; 206 } 207 208 if_initname(sc->ifp, device_get_name(dev), 209 device_get_unit(dev)); 210 211 /* 212 * Enable bus mastering. 213 */ 214 pci_enable_busmaster(dev); 215 216 /* 217 * Map control/status registers. 218 */ 219 rid = PCI_CBMA; 220 scp->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 221 RF_ACTIVE); 222 if (scp->res == NULL) { 223 device_printf(dev, "could not map memory\n"); 224 if_free(sc->ifp); 225 error = ENXIO; 226 goto fail; 227 } 228 229 sc->en_memt = rman_get_bustag(scp->res); 230 sc->en_base = rman_get_bushandle(scp->res); 231 232 /* 233 * Allocate our interrupt. 234 */ 235 rid = 0; 236 scp->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 237 RF_SHAREABLE | RF_ACTIVE); 238 if (scp->irq == NULL) { 239 device_printf(dev, "could not map interrupt\n"); 240 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res); 241 if_free(sc->ifp); 242 error = ENXIO; 243 goto fail; 244 } 245 246 sc->ipl = 1; /* XXX (required to enable interrupt on midway) */ 247 248 /* figure out if we are an adaptec card or not */ 249 sc->is_adaptec = (pci_get_vendor(dev) == PCI_VENDOR_ADP) ? 1 : 0; 250 251 /* 252 * set up pci bridge 253 */ 254 if (sc->is_adaptec) { 255 adp_get_macaddr(scp); 256 sc->en_busreset = adp_busreset; 257 adp_busreset(sc); 258 } else { 259 eni_get_macaddr(dev, scp); 260 sc->en_busreset = NULL; 261 pci_write_config(dev, EN_TONGA, TONGA_SWAP_DMA | TONGA_READ_IVAN, 4); 262 } 263 264 /* 265 * Common attach stuff 266 */ 267 if ((error = en_attach(sc)) != 0) { 268 device_printf(dev, "attach failed\n"); 269 bus_teardown_intr(dev, scp->irq, scp->ih); 270 bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq); 271 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res); 272 if_free(sc->ifp); 273 goto fail; 274 } 275 276 /* 277 * Do the interrupt SETUP last just before returning 278 */ 279 error = bus_setup_intr(dev, scp->irq, INTR_TYPE_NET, 280 NULL, en_intr, sc, &scp->ih); 281 if (error) { 282 en_reset(sc); 283 atm_ifdetach(sc->ifp); 284 device_printf(dev, "could not setup irq\n"); 285 bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq); 286 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res); 287 en_destroy(sc); 288 if_free(sc->ifp); 289 goto fail; 290 } 291 292 return (0); 293 294 fail: 295 return (error); 296 } 297 298 /* 299 * Detach the adapter 300 */ 301 static int 302 en_pci_detach(device_t dev) 303 { 304 struct en_softc *sc = device_get_softc(dev); 305 struct en_pci_softc *scp = (struct en_pci_softc *)sc; 306 307 /* 308 * Stop DMA and drop transmit queue. 309 */ 310 if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) { 311 device_printf(sc->dev, "still running\n"); 312 sc->ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 313 } 314 315 /* 316 * Close down routes etc. 317 */ 318 en_reset(sc); 319 atm_ifdetach(sc->ifp); 320 321 /* 322 * Deallocate resources. 323 */ 324 bus_teardown_intr(dev, scp->irq, scp->ih); 325 bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq); 326 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res); 327 328 /* 329 * Free all the driver internal resources 330 */ 331 en_destroy(sc); 332 if_free(sc->ifp); 333 334 return (0); 335 } 336 337 static int 338 en_pci_shutdown(device_t dev) 339 { 340 struct en_pci_softc *psc = device_get_softc(dev); 341 342 en_reset(&psc->esc); 343 DELAY(10); /* is this necessary? */ 344 345 return (0); 346 } 347 348 /* 349 * Get the MAC address from an Adaptec board. No idea how to get 350 * serial number or other stuff, because I have no documentation for that 351 * card. 352 */ 353 static void 354 adp_get_macaddr(struct en_pci_softc *scp) 355 { 356 struct en_softc * sc = (struct en_softc *)scp; 357 int lcv; 358 359 for (lcv = 0; lcv < sizeof(IFP2IFATM(sc->ifp)->mib.esi); lcv++) 360 IFP2IFATM(sc->ifp)->mib.esi[lcv] = bus_space_read_1(sc->en_memt, 361 sc->en_base, MID_ADPMACOFF + lcv); 362 } 363 364 /* 365 * Read station (MAC) address from serial EEPROM. 366 * derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC. 367 */ 368 #define EN_PROM_MAGIC 0x0c 369 #define EN_PROM_DATA 0x02 370 #define EN_PROM_CLK 0x01 371 #define EN_ESI 64 372 #define EN_SERIAL 112 373 374 /* 375 * Read a byte from the given address in the EEPROM 376 */ 377 static uint8_t 378 eni_get_byte(device_t dev, uint32_t *data, u_int address) 379 { 380 int j; 381 uint8_t tmp; 382 383 address = (address << 1) + 1; 384 385 /* start operation */ 386 *data |= EN_PROM_DATA ; 387 pci_write_config(dev, EN_TONGA, *data, 4); 388 *data |= EN_PROM_CLK ; 389 pci_write_config(dev, EN_TONGA, *data, 4); 390 *data &= ~EN_PROM_DATA ; 391 pci_write_config(dev, EN_TONGA, *data, 4); 392 *data &= ~EN_PROM_CLK ; 393 pci_write_config(dev, EN_TONGA, *data, 4); 394 /* send address with serial line */ 395 for ( j = 7 ; j >= 0 ; j --) { 396 *data = ((address >> j) & 1) ? (*data | EN_PROM_DATA) : 397 (*data & ~EN_PROM_DATA); 398 pci_write_config(dev, EN_TONGA, *data, 4); 399 *data |= EN_PROM_CLK ; 400 pci_write_config(dev, EN_TONGA, *data, 4); 401 *data &= ~EN_PROM_CLK ; 402 pci_write_config(dev, EN_TONGA, *data, 4); 403 } 404 /* get ack */ 405 *data |= EN_PROM_DATA ; 406 pci_write_config(dev, EN_TONGA, *data, 4); 407 *data |= EN_PROM_CLK ; 408 pci_write_config(dev, EN_TONGA, *data, 4); 409 *data = pci_read_config(dev, EN_TONGA, 4); 410 *data &= ~EN_PROM_CLK ; 411 pci_write_config(dev, EN_TONGA, *data, 4); 412 *data |= EN_PROM_DATA ; 413 pci_write_config(dev, EN_TONGA, *data, 4); 414 415 tmp = 0; 416 417 for ( j = 7 ; j >= 0 ; j --) { 418 tmp <<= 1; 419 *data |= EN_PROM_DATA ; 420 pci_write_config(dev, EN_TONGA, *data, 4); 421 *data |= EN_PROM_CLK ; 422 pci_write_config(dev, EN_TONGA, *data, 4); 423 *data = pci_read_config(dev, EN_TONGA, 4); 424 if(*data & EN_PROM_DATA) tmp |= 1; 425 *data &= ~EN_PROM_CLK ; 426 pci_write_config(dev, EN_TONGA, *data, 4); 427 *data |= EN_PROM_DATA ; 428 pci_write_config(dev, EN_TONGA, *data, 4); 429 } 430 /* get ack */ 431 *data |= EN_PROM_DATA ; 432 pci_write_config(dev, EN_TONGA, *data, 4); 433 *data |= EN_PROM_CLK ; 434 pci_write_config(dev, EN_TONGA, *data, 4); 435 *data = pci_read_config(dev, EN_TONGA, 4); 436 *data &= ~EN_PROM_CLK ; 437 pci_write_config(dev, EN_TONGA, *data, 4); 438 *data |= EN_PROM_DATA ; 439 pci_write_config(dev, EN_TONGA, *data, 4); 440 441 return (tmp); 442 } 443 444 /* 445 * Get MAC address and other stuff from the EEPROM 446 */ 447 static void 448 eni_get_macaddr(device_t dev, struct en_pci_softc *scp) 449 { 450 struct en_softc * sc = (struct en_softc *)scp; 451 int i; 452 uint32_t data, t_data; 453 454 t_data = pci_read_config(dev, EN_TONGA, 4) & 0xffffff00; 455 456 data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK; 457 pci_write_config(dev, EN_TONGA, data, 4); 458 459 for (i = 0; i < sizeof(IFP2IFATM(sc->ifp)->mib.esi); i ++) 460 IFP2IFATM(sc->ifp)->mib.esi[i] = eni_get_byte(dev, &data, i + EN_ESI); 461 462 IFP2IFATM(sc->ifp)->mib.serial = 0; 463 for (i = 0; i < 4; i++) { 464 IFP2IFATM(sc->ifp)->mib.serial <<= 8; 465 IFP2IFATM(sc->ifp)->mib.serial |= eni_get_byte(dev, &data, i + EN_SERIAL); 466 } 467 /* stop operation */ 468 data &= ~EN_PROM_DATA; 469 pci_write_config(dev, EN_TONGA, data, 4); 470 data |= EN_PROM_CLK; 471 pci_write_config(dev, EN_TONGA, data, 4); 472 data |= EN_PROM_DATA; 473 pci_write_config(dev, EN_TONGA, data, 4); 474 pci_write_config(dev, EN_TONGA, t_data, 4); 475 } 476 477 /* 478 * Driver infrastructure 479 */ 480 static device_method_t en_methods[] = { 481 /* Device interface */ 482 DEVMETHOD(device_probe, en_pci_probe), 483 DEVMETHOD(device_attach, en_pci_attach), 484 DEVMETHOD(device_detach, en_pci_detach), 485 DEVMETHOD(device_shutdown, en_pci_shutdown), 486 487 { 0, 0 } 488 }; 489 490 static driver_t en_driver = { 491 "en", 492 en_methods, 493 sizeof(struct en_pci_softc), 494 }; 495 496 static devclass_t en_devclass; 497 498 DRIVER_MODULE(en, pci, en_driver, en_devclass, en_modevent, 0);
Cache object: 2f890620332bc177ed4be1ef6112b719
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