if_en_pci.c revision 223624
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: head/sys/dev/en/if_en_pci.c 223624 2011-06-28 08:36:48Z kevlo $"); 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/param.h> 48#include <sys/kernel.h> 49#include <sys/module.h> 50#include <sys/systm.h> 51#include <sys/socket.h> 52#include <sys/sysctl.h> 53#include <sys/condvar.h> 54 55#include <sys/bus.h> 56#include <machine/bus.h> 57#include <sys/rman.h> 58#include <machine/resource.h> 59 60#include <vm/uma.h> 61 62#include <net/if.h> 63#include <net/if_atm.h> 64#include <net/if_media.h> 65#include <net/if_types.h> 66 67#include <dev/pci/pcivar.h> 68#include <dev/pci/pcireg.h> 69 70#include <dev/utopia/utopia.h> 71#include <dev/en/midwayreg.h> 72#include <dev/en/midwayvar.h> 73 74MODULE_DEPEND(en, pci, 1, 1, 1); 75MODULE_DEPEND(en, atm, 1, 1, 1); 76MODULE_DEPEND(en, utopia, 1, 1, 1); 77 78/* 79 * local structures 80 */ 81struct en_pci_softc { 82 /* bus independent stuff */ 83 struct en_softc esc; /* includes "device" structure */ 84 85 /* freebsd newbus glue */ 86 struct resource *res; /* resource descriptor for registers */ 87 struct resource *irq; /* resource descriptor for interrupt */ 88 void *ih; /* interrupt handle */ 89}; 90 91static void eni_get_macaddr(device_t, struct en_pci_softc *); 92static void adp_get_macaddr(struct en_pci_softc *); 93 94/* 95 * address of config base memory address register in PCI config space 96 * (this is card specific) 97 */ 98#define PCI_CBMA PCIR_BAR(0) 99 100/* 101 * tonga (pci bridge). ENI cards only! 102 */ 103#define EN_TONGA 0x60 /* PCI config addr of tonga reg */ 104 105#define TONGA_SWAP_DMA 0x80 /* endian swap control */ 106#define TONGA_SWAP_BYTE 0x40 107#define TONGA_SWAP_WORD 0x20 108#define TONGA_READ_MULT 0x00 109#define TONGA_READ_MEM 0x04 110#define TONGA_READ_IVAN 0x08 111#define TONGA_READ_KEN 0x0C 112 113/* 114 * adaptec pci bridge. ADP cards only! 115 */ 116#define ADP_PCIREG 0x050040 /* PCI control register */ 117 118#define ADP_PCIREG_RESET 0x1 /* reset card */ 119#define ADP_PCIREG_IENABLE 0x2 /* interrupt enable */ 120#define ADP_PCIREG_SWAP_WORD 0x4 /* swap byte on slave access */ 121#define ADP_PCIREG_SWAP_DMA 0x8 /* swap byte on DMA */ 122 123#define PCI_VENDOR_EFFICIENTNETS 0x111a /* Efficent Networks */ 124#define PCI_PRODUCT_EFFICIENTNETS_ENI155PF 0x0000 /* ENI-155P ATM */ 125#define PCI_PRODUCT_EFFICIENTNETS_ENI155PA 0x0002 /* ENI-155P ATM */ 126#define PCI_VENDOR_ADP 0x9004 /* adaptec */ 127#define PCI_PRODUCT_ADP_AIC5900 0x5900 128#define PCI_PRODUCT_ADP_AIC5905 0x5905 129#define PCI_VENDOR(x) ((x) & 0xFFFF) 130#define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF) 131 132/* 133 * bus specific reset function [ADP only!] 134 */ 135static void 136adp_busreset(void *v) 137{ 138 struct en_softc *sc = (struct en_softc *)v; 139 uint32_t dummy; 140 141 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, 142 ADP_PCIREG_RESET); 143 DELAY(1000); /* let it reset */ 144 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 145 bus_space_write_4(sc->en_memt, sc->en_base, ADP_PCIREG, 146 (ADP_PCIREG_SWAP_DMA | ADP_PCIREG_IENABLE)); 147 dummy = bus_space_read_4(sc->en_memt, sc->en_base, ADP_PCIREG); 148 if ((dummy & (ADP_PCIREG_SWAP_WORD | ADP_PCIREG_SWAP_DMA)) != 149 ADP_PCIREG_SWAP_DMA) 150 device_printf(sc->dev, "%s: Adaptec ATM did NOT reset!\n", 151 __func__); 152} 153 154/***********************************************************************/ 155 156/* 157 * autoconfig stuff 158 */ 159static int 160en_pci_probe(device_t dev) 161{ 162 163 switch (pci_get_vendor(dev)) { 164 165 case PCI_VENDOR_EFFICIENTNETS: 166 switch (pci_get_device(dev)) { 167 168 case PCI_PRODUCT_EFFICIENTNETS_ENI155PF: 169 case PCI_PRODUCT_EFFICIENTNETS_ENI155PA: 170 device_set_desc(dev, "Efficient Networks ENI-155p"); 171 return (BUS_PROBE_DEFAULT); 172 } 173 break; 174 175 case PCI_VENDOR_ADP: 176 switch (pci_get_device(dev)) { 177 178 case PCI_PRODUCT_ADP_AIC5900: 179 case PCI_PRODUCT_ADP_AIC5905: 180 device_set_desc(dev, "Adaptec 155 ATM"); 181 return (BUS_PROBE_DEFAULT); 182 } 183 break; 184 } 185 return (ENXIO); 186} 187 188static int 189en_pci_attach(device_t dev) 190{ 191 struct en_softc *sc; 192 struct en_pci_softc *scp; 193 int rid, error = 0; 194 195 sc = device_get_softc(dev); 196 scp = (struct en_pci_softc *)sc; 197 sc->dev = dev; 198 sc->ifp = if_alloc(IFT_ATM); 199 if (sc->ifp == NULL) { 200 device_printf(dev, "can not if_alloc()\n"); 201 error = ENOSPC; 202 goto fail; 203 } 204 205 if_initname(sc->ifp, device_get_name(dev), 206 device_get_unit(dev)); 207 208 /* 209 * Enable bus mastering. 210 */ 211 pci_enable_busmaster(dev); 212 213 /* 214 * Map control/status registers. 215 */ 216 rid = PCI_CBMA; 217 scp->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 218 RF_ACTIVE); 219 if (scp->res == NULL) { 220 device_printf(dev, "could not map memory\n"); 221 if_free(sc->ifp); 222 error = ENXIO; 223 goto fail; 224 } 225 226 sc->en_memt = rman_get_bustag(scp->res); 227 sc->en_base = rman_get_bushandle(scp->res); 228 229 /* 230 * Allocate our interrupt. 231 */ 232 rid = 0; 233 scp->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 234 RF_SHAREABLE | RF_ACTIVE); 235 if (scp->irq == NULL) { 236 device_printf(dev, "could not map interrupt\n"); 237 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res); 238 if_free(sc->ifp); 239 error = ENXIO; 240 goto fail; 241 } 242 243 sc->ipl = 1; /* XXX (required to enable interrupt on midway) */ 244 245 /* figure out if we are an adaptec card or not */ 246 sc->is_adaptec = (pci_get_vendor(dev) == PCI_VENDOR_ADP) ? 1 : 0; 247 248 /* 249 * set up pci bridge 250 */ 251 if (sc->is_adaptec) { 252 adp_get_macaddr(scp); 253 sc->en_busreset = adp_busreset; 254 adp_busreset(sc); 255 } else { 256 eni_get_macaddr(dev, scp); 257 sc->en_busreset = NULL; 258 pci_write_config(dev, EN_TONGA, TONGA_SWAP_DMA | TONGA_READ_IVAN, 4); 259 } 260 261 /* 262 * Common attach stuff 263 */ 264 if ((error = en_attach(sc)) != 0) { 265 device_printf(dev, "attach failed\n"); 266 bus_teardown_intr(dev, scp->irq, scp->ih); 267 bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq); 268 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res); 269 if_free(sc->ifp); 270 goto fail; 271 } 272 273 /* 274 * Do the interrupt SETUP last just before returning 275 */ 276 error = bus_setup_intr(dev, scp->irq, INTR_TYPE_NET, 277 NULL, en_intr, sc, &scp->ih); 278 if (error) { 279 en_reset(sc); 280 atm_ifdetach(sc->ifp); 281 device_printf(dev, "could not setup irq\n"); 282 bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq); 283 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res); 284 en_destroy(sc); 285 if_free(sc->ifp); 286 goto fail; 287 } 288 289 return (0); 290 291 fail: 292 return (error); 293} 294 295/* 296 * Detach the adapter 297 */ 298static int 299en_pci_detach(device_t dev) 300{ 301 struct en_softc *sc = device_get_softc(dev); 302 struct en_pci_softc *scp = (struct en_pci_softc *)sc; 303 304 /* 305 * Stop DMA and drop transmit queue. 306 */ 307 if ((sc->ifp->if_drv_flags & IFF_DRV_RUNNING)) { 308 device_printf(sc->dev, "still running\n"); 309 sc->ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 310 } 311 312 /* 313 * Close down routes etc. 314 */ 315 en_reset(sc); 316 atm_ifdetach(sc->ifp); 317 318 /* 319 * Deallocate resources. 320 */ 321 bus_teardown_intr(dev, scp->irq, scp->ih); 322 bus_release_resource(dev, SYS_RES_IRQ, 0, scp->irq); 323 bus_release_resource(dev, SYS_RES_MEMORY, PCI_CBMA, scp->res); 324 325 /* 326 * Free all the driver internal resources 327 */ 328 en_destroy(sc); 329 if_free(sc->ifp); 330 331 return (0); 332} 333 334static int 335en_pci_shutdown(device_t dev) 336{ 337 struct en_pci_softc *psc = device_get_softc(dev); 338 339 en_reset(&psc->esc); 340 DELAY(10); /* is this necessary? */ 341 342 return (0); 343} 344 345/* 346 * Get the MAC address from an Adaptec board. No idea how to get 347 * serial number or other stuff, because I have no documentation for that 348 * card. 349 */ 350static void 351adp_get_macaddr(struct en_pci_softc *scp) 352{ 353 struct en_softc * sc = (struct en_softc *)scp; 354 int lcv; 355 356 for (lcv = 0; lcv < sizeof(IFP2IFATM(sc->ifp)->mib.esi); lcv++) 357 IFP2IFATM(sc->ifp)->mib.esi[lcv] = bus_space_read_1(sc->en_memt, 358 sc->en_base, MID_ADPMACOFF + lcv); 359} 360 361/* 362 * Read station (MAC) address from serial EEPROM. 363 * derived from linux drivers/atm/eni.c by Werner Almesberger, EPFL LRC. 364 */ 365#define EN_PROM_MAGIC 0x0c 366#define EN_PROM_DATA 0x02 367#define EN_PROM_CLK 0x01 368#define EN_ESI 64 369#define EN_SERIAL 112 370 371/* 372 * Read a byte from the given address in the EEPROM 373 */ 374static uint8_t 375eni_get_byte(device_t dev, uint32_t *data, u_int address) 376{ 377 int j; 378 uint8_t tmp; 379 380 address = (address << 1) + 1; 381 382 /* start operation */ 383 *data |= EN_PROM_DATA ; 384 pci_write_config(dev, EN_TONGA, *data, 4); 385 *data |= EN_PROM_CLK ; 386 pci_write_config(dev, EN_TONGA, *data, 4); 387 *data &= ~EN_PROM_DATA ; 388 pci_write_config(dev, EN_TONGA, *data, 4); 389 *data &= ~EN_PROM_CLK ; 390 pci_write_config(dev, EN_TONGA, *data, 4); 391 /* send address with serial line */ 392 for ( j = 7 ; j >= 0 ; j --) { 393 *data = ((address >> j) & 1) ? (*data | EN_PROM_DATA) : 394 (*data & ~EN_PROM_DATA); 395 pci_write_config(dev, EN_TONGA, *data, 4); 396 *data |= EN_PROM_CLK ; 397 pci_write_config(dev, EN_TONGA, *data, 4); 398 *data &= ~EN_PROM_CLK ; 399 pci_write_config(dev, EN_TONGA, *data, 4); 400 } 401 /* get ack */ 402 *data |= EN_PROM_DATA ; 403 pci_write_config(dev, EN_TONGA, *data, 4); 404 *data |= EN_PROM_CLK ; 405 pci_write_config(dev, EN_TONGA, *data, 4); 406 *data = pci_read_config(dev, EN_TONGA, 4); 407 *data &= ~EN_PROM_CLK ; 408 pci_write_config(dev, EN_TONGA, *data, 4); 409 *data |= EN_PROM_DATA ; 410 pci_write_config(dev, EN_TONGA, *data, 4); 411 412 tmp = 0; 413 414 for ( j = 7 ; j >= 0 ; j --) { 415 tmp <<= 1; 416 *data |= EN_PROM_DATA ; 417 pci_write_config(dev, EN_TONGA, *data, 4); 418 *data |= EN_PROM_CLK ; 419 pci_write_config(dev, EN_TONGA, *data, 4); 420 *data = pci_read_config(dev, EN_TONGA, 4); 421 if(*data & EN_PROM_DATA) tmp |= 1; 422 *data &= ~EN_PROM_CLK ; 423 pci_write_config(dev, EN_TONGA, *data, 4); 424 *data |= EN_PROM_DATA ; 425 pci_write_config(dev, EN_TONGA, *data, 4); 426 } 427 /* get ack */ 428 *data |= EN_PROM_DATA ; 429 pci_write_config(dev, EN_TONGA, *data, 4); 430 *data |= EN_PROM_CLK ; 431 pci_write_config(dev, EN_TONGA, *data, 4); 432 *data = pci_read_config(dev, EN_TONGA, 4); 433 *data &= ~EN_PROM_CLK ; 434 pci_write_config(dev, EN_TONGA, *data, 4); 435 *data |= EN_PROM_DATA ; 436 pci_write_config(dev, EN_TONGA, *data, 4); 437 438 return (tmp); 439} 440 441/* 442 * Get MAC address and other stuff from the EEPROM 443 */ 444static void 445eni_get_macaddr(device_t dev, struct en_pci_softc *scp) 446{ 447 struct en_softc * sc = (struct en_softc *)scp; 448 int i; 449 uint32_t data, t_data; 450 451 t_data = pci_read_config(dev, EN_TONGA, 4) & 0xffffff00; 452 453 data = EN_PROM_MAGIC | EN_PROM_DATA | EN_PROM_CLK; 454 pci_write_config(dev, EN_TONGA, data, 4); 455 456 for (i = 0; i < sizeof(IFP2IFATM(sc->ifp)->mib.esi); i ++) 457 IFP2IFATM(sc->ifp)->mib.esi[i] = eni_get_byte(dev, &data, i + EN_ESI); 458 459 IFP2IFATM(sc->ifp)->mib.serial = 0; 460 for (i = 0; i < 4; i++) { 461 IFP2IFATM(sc->ifp)->mib.serial <<= 8; 462 IFP2IFATM(sc->ifp)->mib.serial |= eni_get_byte(dev, &data, i + EN_SERIAL); 463 } 464 /* stop operation */ 465 data &= ~EN_PROM_DATA; 466 pci_write_config(dev, EN_TONGA, data, 4); 467 data |= EN_PROM_CLK; 468 pci_write_config(dev, EN_TONGA, data, 4); 469 data |= EN_PROM_DATA; 470 pci_write_config(dev, EN_TONGA, data, 4); 471 pci_write_config(dev, EN_TONGA, t_data, 4); 472} 473 474/* 475 * Driver infrastructure 476 */ 477static device_method_t en_methods[] = { 478 /* Device interface */ 479 DEVMETHOD(device_probe, en_pci_probe), 480 DEVMETHOD(device_attach, en_pci_attach), 481 DEVMETHOD(device_detach, en_pci_detach), 482 DEVMETHOD(device_shutdown, en_pci_shutdown), 483 484 { 0, 0 } 485}; 486 487static driver_t en_driver = { 488 "en", 489 en_methods, 490 sizeof(struct en_pci_softc), 491}; 492 493static devclass_t en_devclass; 494 495DRIVER_MODULE(en, pci, en_driver, en_devclass, en_modevent, 0); 496