sys/dev/netif/bge/if_bge.c

   1 /*
   2  * Copyright (c) 2001 Wind River Systems
   3  * Copyright (c) 1997, 1998, 1999, 2001
   4  *      Bill Paul <wpaul@windriver.com>.  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 Bill Paul.
  17  * 4. Neither the name of the author nor the names of any co-contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  31  * THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  * $FreeBSD: src/sys/dev/bge/if_bge.c,v 1.3.2.29 2003/12/01 21:06:59 ambrisko Exp $
  34  * $DragonFly: src/sys/dev/netif/bge/if_bge.c,v 1.17 2004/03/22 13:33:34 joerg Exp $
  35  *
  36  */
  37
  38 /*
  39  * Broadcom BCM570x family gigabit ethernet driver for FreeBSD.
  40  *
  41  * Written by Bill Paul <wpaul@windriver.com>
  42  * Senior Engineer, Wind River Systems
  43  */
  44
  45 /*
  46  * The Broadcom BCM5700 is based on technology originally developed by
  47  * Alteon Networks as part of the Tigon I and Tigon II gigabit ethernet
  48  * MAC chips. The BCM5700, sometimes refered to as the Tigon III, has
  49  * two on-board MIPS R4000 CPUs and can have as much as 16MB of external
  50  * SSRAM. The BCM5700 supports TCP, UDP and IP checksum offload, jumbo
  51  * frames, highly configurable RX filtering, and 16 RX and TX queues
  52  * (which, along with RX filter rules, can be used for QOS applications).
  53  * Other features, such as TCP segmentation, may be available as part
  54  * of value-added firmware updates. Unlike the Tigon I and Tigon II,
  55  * firmware images can be stored in hardware and need not be compiled
  56  * into the driver.
  57  *
  58  * The BCM5700 supports the PCI v2.2 and PCI-X v1.0 standards, and will
  59  * function in a 32-bit/64-bit 33/66Mhz bus, or a 64-bit/133Mhz bus.
  60  *
  61  * The BCM5701 is a single-chip solution incorporating both the BCM5700
  62  * MAC and a BCM5401 10/100/1000 PHY. Unlike the BCM5700, the BCM5701
  63  * does not support external SSRAM.
  64  *
  65  * Broadcom also produces a variation of the BCM5700 under the "Altima"
  66  * brand name, which is functionally similar but lacks PCI-X support.
  67  *
  68  * Without external SSRAM, you can only have at most 4 TX rings,
  69  * and the use of the mini RX ring is disabled. This seems to imply
  70  * that these features are simply not available on the BCM5701. As a
  71  * result, this driver does not implement any support for the mini RX
  72  * ring.
  73  */
  74
  75 #include <sys/param.h>
  76 #include <sys/systm.h>
  77 #include <sys/sockio.h>
  78 #include <sys/mbuf.h>
  79 #include <sys/malloc.h>
  80 #include <sys/kernel.h>
  81 #include <sys/socket.h>
  82 #include <sys/queue.h>
  83
  84 #include <net/if.h>
  85 #include <net/if_arp.h>
  86 #include <net/ethernet.h>
  87 #include <net/if_dl.h>
  88 #include <net/if_media.h>
  89
  90 #include <net/bpf.h>
  91
  92 #include <net/if_types.h>
  93 #include <net/vlan/if_vlan_var.h>
  94
  95 #include <netinet/in_systm.h>
  96 #include <netinet/in.h>
  97 #include <netinet/ip.h>
  98
  99 #include <vm/vm.h>              /* for vtophys */
 100 #include <vm/pmap.h>            /* for vtophys */
 101 #include <machine/clock.h>      /* for DELAY */
 102 #include <machine/bus_memio.h>
 103 #include <machine/bus.h>
 104 #include <machine/resource.h>
 105 #include <sys/bus.h>
 106 #include <sys/rman.h>
 107
 108 #include <dev/netif/mii_layer/mii.h>
 109 #include <dev/netif/mii_layer/miivar.h>
 110 #include <dev/netif/mii_layer/miidevs.h>
 111 #include <dev/netif/mii_layer/brgphyreg.h>
 112
 113 #include <bus/pci/pcidevs.h>
 114 #include <bus/pci/pcireg.h>
 115 #include <bus/pci/pcivar.h>
 116
 117 #include "if_bgereg.h"
 118
 119 #define BGE_CSUM_FEATURES       (CSUM_IP | CSUM_TCP | CSUM_UDP)
 120
 121 /* "controller miibus0" required.  See GENERIC if you get errors here. */
 122 #include "miibus_if.h"
 123
 124 /*
 125  * Various supported device vendors/types and their names. Note: the
 126  * spec seems to indicate that the hardware still has Alteon's vendor
 127  * ID burned into it, though it will always be overriden by the vendor
 128  * ID in the EEPROM. Just to be safe, we cover all possibilities.
 129  */
 130 #define BGE_DEVDESC_MAX         64      /* Maximum device description length */
 131
 132 static struct bge_type bge_devs[] = {
 133         { PCI_VENDOR_ALTEON, PCI_PRODUCT_ALTEON_BCM5700,
 134                 "Broadcom BCM5700 Gigabit Ethernet" },
 135         { PCI_VENDOR_ALTEON, PCI_PRODUCT_ALTEON_BCM5700,
 136                 "Broadcom BCM5701 Gigabit Ethernet" },
 137         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5700,
 138                 "Broadcom BCM5700 Gigabit Ethernet" },
 139         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5701,
 140                 "Broadcom BCM5701 Gigabit Ethernet" },
 141         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702X,
 142                 "Broadcom BCM5702X Gigabit Ethernet" },
 143         { PCI_VENDOR_BROADCOM, BCOM_DEVICEID_BCM5702X,
 144                 "Broadcom BCM5702X Gigabit Ethernet" },
 145         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703X,
 146                 "Broadcom BCM5703X Gigabit Ethernet" },
 147         { PCI_VENDOR_BROADCOM, BCOM_DEVICEID_BCM5703X,
 148                 "Broadcom BCM5703X Gigabit Ethernet" },
 149         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704C,
 150                 "Broadcom BCM5704C Dual Gigabit Ethernet" },
 151         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704S,
 152                 "Broadcom BCM5704S Dual Gigabit Ethernet" },
 153         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705,
 154                 "Broadcom BCM5705 Gigabit Ethernet" },
 155         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705M,
 156                 "Broadcom BCM5705M Gigabit Ethernet" },
 157         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705_ALT,
 158                 "Broadcom BCM5705M Gigabit Ethernet" },
 159         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5782,
 160                 "Broadcom BCM5782 Gigabit Ethernet" },
 161         { PCI_VENDOR_BROADCOM, BCOM_DEVICEID_BCM5788,
 162                 "Broadcom BCM5788 Gigabit Ethernet" },
 163         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5901,
 164                 "Broadcom BCM5901 Fast Ethernet" },
 165         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5901A2,
 166                 "Broadcom BCM5901A2 Fast Ethernet" },
 167         { PCI_VENDOR_SCHNEIDERKOCH, PCI_PRODUCT_SCHNEIDERKOCH_SK_9DX1,
 168                 "SysKonnect Gigabit Ethernet" },
 169         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC1000,
 170                 "Altima AC1000 Gigabit Ethernet" },
 171         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC1001,
 172                 "Altima AC1002 Gigabit Ethernet" },
 173         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC9100,
 174                 "Altima AC9100 Gigabit Ethernet" },
 175         { 0, 0, NULL }
 176 };
 177
 178 static int bge_probe            (device_t);
 179 static int bge_attach           (device_t);
 180 static int bge_detach           (device_t);
 181 static void bge_release_resources
 182                                 (struct bge_softc *);
 183 static void bge_txeof           (struct bge_softc *);
 184 static void bge_rxeof           (struct bge_softc *);
 185
 186 static void bge_tick            (void *);
 187 static void bge_stats_update    (struct bge_softc *);
 188 static void bge_stats_update_regs
 189                                 (struct bge_softc *);
 190 static int bge_encap            (struct bge_softc *, struct mbuf *,
 191                                         u_int32_t *);
 192
 193 static void bge_intr            (void *);
 194 static void bge_start           (struct ifnet *);
 195 static int bge_ioctl            (struct ifnet *, u_long, caddr_t);
 196 static void bge_init            (void *);
 197 static void bge_stop            (struct bge_softc *);
 198 static void bge_watchdog                (struct ifnet *);
 199 static void bge_shutdown                (device_t);
 200 static int bge_ifmedia_upd      (struct ifnet *);
 201 static void bge_ifmedia_sts     (struct ifnet *, struct ifmediareq *);
 202
 203 static u_int8_t bge_eeprom_getbyte      (struct bge_softc *,
 204                                                 int, u_int8_t *);
 205 static int bge_read_eeprom      (struct bge_softc *, caddr_t, int, int);
 206
 207 static u_int32_t bge_crc        (caddr_t);
 208 static void bge_setmulti        (struct bge_softc *);
 209
 210 static void bge_handle_events   (struct bge_softc *);
 211 static int bge_alloc_jumbo_mem  (struct bge_softc *);
 212 static void bge_free_jumbo_mem  (struct bge_softc *);
 213 static void *bge_jalloc         (struct bge_softc *);
 214 static void bge_jfree           (caddr_t, u_int);
 215 static void bge_jref            (caddr_t, u_int);
 216 static int bge_newbuf_std       (struct bge_softc *, int, struct mbuf *);
 217 static int bge_newbuf_jumbo     (struct bge_softc *, int, struct mbuf *);
 218 static int bge_init_rx_ring_std (struct bge_softc *);
 219 static void bge_free_rx_ring_std        (struct bge_softc *);
 220 static int bge_init_rx_ring_jumbo       (struct bge_softc *);
 221 static void bge_free_rx_ring_jumbo      (struct bge_softc *);
 222 static void bge_free_tx_ring    (struct bge_softc *);
 223 static int bge_init_tx_ring     (struct bge_softc *);
 224
 225 static int bge_chipinit         (struct bge_softc *);
 226 static int bge_blockinit        (struct bge_softc *);
 227
 228 #ifdef notdef
 229 static u_int8_t bge_vpd_readbyte (struct bge_softc *, int);
 230 static void bge_vpd_read_res    (struct bge_softc *,
 231                                         struct vpd_res *, int);
 232 static void bge_vpd_read        (struct bge_softc *);
 233 #endif
 234
 235 static u_int32_t bge_readmem_ind
 236                                 (struct bge_softc *, int);
 237 static void bge_writemem_ind    (struct bge_softc *, int, int);
 238 #ifdef notdef
 239 static u_int32_t bge_readreg_ind
 240                                 (struct bge_softc *, int);
 241 #endif
 242 static void bge_writereg_ind    (struct bge_softc *, int, int);
 243
 244 static int bge_miibus_readreg   (device_t, int, int);
 245 static int bge_miibus_writereg  (device_t, int, int, int);
 246 static void bge_miibus_statchg  (device_t);
 247
 248 static void bge_reset           (struct bge_softc *);
 249
 250 static device_method_t bge_methods[] = {
 251         /* Device interface */
 252         DEVMETHOD(device_probe,         bge_probe),
 253         DEVMETHOD(device_attach,        bge_attach),
 254         DEVMETHOD(device_detach,        bge_detach),
 255         DEVMETHOD(device_shutdown,      bge_shutdown),
 256
 257         /* bus interface */
 258         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 259         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
 260
 261         /* MII interface */
 262         DEVMETHOD(miibus_readreg,       bge_miibus_readreg),
 263         DEVMETHOD(miibus_writereg,      bge_miibus_writereg),
 264         DEVMETHOD(miibus_statchg,       bge_miibus_statchg),
 265
 266         { 0, 0 }
 267 };
 268
 269 static driver_t bge_driver = {
 270         "bge",
 271         bge_methods,
 272         sizeof(struct bge_softc)
 273 };
 274
 275 static devclass_t bge_devclass;
 276
 277 DECLARE_DUMMY_MODULE(if_bge);
 278 DRIVER_MODULE(if_bge, pci, bge_driver, bge_devclass, 0, 0);
 279 DRIVER_MODULE(miibus, bge, miibus_driver, miibus_devclass, 0, 0);
 280
 281 static u_int32_t
 282 bge_readmem_ind(sc, off)
 283         struct bge_softc *sc;
 284         int off;
 285 {
 286         device_t dev;
 287
 288         dev = sc->bge_dev;
 289
 290         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 291         return(pci_read_config(dev, BGE_PCI_MEMWIN_DATA, 4));
 292 }
 293
 294 static void
 295 bge_writemem_ind(sc, off, val)
 296         struct bge_softc *sc;
 297         int off, val;
 298 {
 299         device_t dev;
 300
 301         dev = sc->bge_dev;
 302
 303         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 304         pci_write_config(dev, BGE_PCI_MEMWIN_DATA, val, 4);
 305
 306         return;
 307 }
 308
 309 #ifdef notdef
 310 static u_int32_t
 311 bge_readreg_ind(sc, off)
 312         struct bge_softc *sc;
 313         int off;
 314 {
 315         device_t dev;
 316
 317         dev = sc->bge_dev;
 318
 319         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 320         return(pci_read_config(dev, BGE_PCI_REG_DATA, 4));
 321 }
 322 #endif
 323
 324 static void
 325 bge_writereg_ind(sc, off, val)
 326         struct bge_softc *sc;
 327         int off, val;
 328 {
 329         device_t dev;
 330
 331         dev = sc->bge_dev;
 332
 333         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 334         pci_write_config(dev, BGE_PCI_REG_DATA, val, 4);
 335
 336         return;
 337 }
 338
 339 #ifdef notdef
 340 static u_int8_t
 341 bge_vpd_readbyte(sc, addr)
 342         struct bge_softc *sc;
 343         int addr;
 344 {
 345         int i;
 346         device_t dev;
 347         u_int32_t val;
 348
 349         dev = sc->bge_dev;
 350         pci_write_config(dev, BGE_PCI_VPD_ADDR, addr, 2);
 351         for (i = 0; i < BGE_TIMEOUT * 10; i++) {
 352                 DELAY(10);
 353                 if (pci_read_config(dev, BGE_PCI_VPD_ADDR, 2) & BGE_VPD_FLAG)
 354                         break;
 355         }
 356
 357         if (i == BGE_TIMEOUT) {
 358                 printf("bge%d: VPD read timed out\n", sc->bge_unit);
 359                 return(0);
 360         }
 361
 362         val = pci_read_config(dev, BGE_PCI_VPD_DATA, 4);
 363
 364         return((val >> ((addr % 4) * 8)) & 0xFF);
 365 }
 366
 367 static void
 368 bge_vpd_read_res(sc, res, addr)
 369         struct bge_softc *sc;
 370         struct vpd_res *res;
 371         int addr;
 372 {
 373         int i;
 374         u_int8_t *ptr;
 375
 376         ptr = (u_int8_t *)res;
 377         for (i = 0; i < sizeof(struct vpd_res); i++)
 378                 ptr[i] = bge_vpd_readbyte(sc, i + addr);
 379
 380         return;
 381 }
 382
 383 static void
 384 bge_vpd_read(sc)
 385         struct bge_softc *sc;
 386 {
 387         int pos = 0, i;
 388         struct vpd_res res;
 389
 390         if (sc->bge_vpd_prodname != NULL)
 391                 free(sc->bge_vpd_prodname, M_DEVBUF);
 392         if (sc->bge_vpd_readonly != NULL)
 393                 free(sc->bge_vpd_readonly, M_DEVBUF);
 394         sc->bge_vpd_prodname = NULL;
 395         sc->bge_vpd_readonly = NULL;
 396
 397         bge_vpd_read_res(sc, &res, pos);
 398
 399         if (res.vr_id != VPD_RES_ID) {
 400                 printf("bge%d: bad VPD resource id: expected %x got %x\n",
 401                         sc->bge_unit, VPD_RES_ID, res.vr_id);
 402                 return;
 403         }
 404
 405         pos += sizeof(res);
 406         sc->bge_vpd_prodname = malloc(res.vr_len + 1, M_DEVBUF, M_NOWAIT);
 407         for (i = 0; i < res.vr_len; i++)
 408                 sc->bge_vpd_prodname[i] = bge_vpd_readbyte(sc, i + pos);
 409         sc->bge_vpd_prodname[i] = '\0';
 410         pos += i;
 411
 412         bge_vpd_read_res(sc, &res, pos);
 413
 414         if (res.vr_id != VPD_RES_READ) {
 415                 printf("bge%d: bad VPD resource id: expected %x got %x\n",
 416                     sc->bge_unit, VPD_RES_READ, res.vr_id);
 417                 return;
 418         }
 419
 420         pos += sizeof(res);
 421         sc->bge_vpd_readonly = malloc(res.vr_len, M_DEVBUF, M_NOWAIT);
 422         for (i = 0; i < res.vr_len + 1; i++)
 423                 sc->bge_vpd_readonly[i] = bge_vpd_readbyte(sc, i + pos);
 424
 425         return;
 426 }
 427 #endif
 428
 429 /*
 430  * Read a byte of data stored in the EEPROM at address 'addr.' The
 431  * BCM570x supports both the traditional bitbang interface and an
 432  * auto access interface for reading the EEPROM. We use the auto
 433  * access method.
 434  */
 435 static u_int8_t
 436 bge_eeprom_getbyte(sc, addr, dest)
 437         struct bge_softc *sc;
 438         int addr;
 439         u_int8_t *dest;
 440 {
 441         int i;
 442         u_int32_t byte = 0;
 443
 444         /*
 445          * Enable use of auto EEPROM access so we can avoid
 446          * having to use the bitbang method.
 447          */
 448         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM);
 449
 450         /* Reset the EEPROM, load the clock period. */
 451         CSR_WRITE_4(sc, BGE_EE_ADDR,
 452             BGE_EEADDR_RESET|BGE_EEHALFCLK(BGE_HALFCLK_384SCL));
 453         DELAY(20);
 454
 455         /* Issue the read EEPROM command. */
 456         CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr);
 457
 458         /* Wait for completion */
 459         for(i = 0; i < BGE_TIMEOUT * 10; i++) {
 460                 DELAY(10);
 461                 if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE)
 462                         break;
 463         }
 464
 465         if (i == BGE_TIMEOUT) {
 466                 printf("bge%d: eeprom read timed out\n", sc->bge_unit);
 467                 return(0);
 468         }
 469
 470         /* Get result. */
 471         byte = CSR_READ_4(sc, BGE_EE_DATA);
 472
 473         *dest = (byte >> ((addr % 4) * 8)) & 0xFF;
 474
 475         return(0);
 476 }
 477
 478 /*
 479  * Read a sequence of bytes from the EEPROM.
 480  */
 481 static int
 482 bge_read_eeprom(sc, dest, off, cnt)
 483         struct bge_softc *sc;
 484         caddr_t dest;
 485         int off;
 486         int cnt;
 487 {
 488         int err = 0, i;
 489         u_int8_t byte = 0;
 490
 491         for (i = 0; i < cnt; i++) {
 492                 err = bge_eeprom_getbyte(sc, off + i, &byte);
 493                 if (err)
 494                         break;
 495                 *(dest + i) = byte;
 496         }
 497
 498         return(err ? 1 : 0);
 499 }
 500
 501 static int
 502 bge_miibus_readreg(dev, phy, reg)
 503         device_t dev;
 504         int phy, reg;
 505 {
 506         struct bge_softc *sc;
 507         struct ifnet *ifp;
 508         u_int32_t val, autopoll;
 509         int i;
 510
 511         sc = device_get_softc(dev);
 512         ifp = &sc->arpcom.ac_if;
 513
 514         /*
 515          * Broadcom's own driver always assumes the internal
 516          * PHY is at GMII address 1. On some chips, the PHY responds
 517          * to accesses at all addresses, which could cause us to
 518          * bogusly attach the PHY 32 times at probe type. Always
 519          * restricting the lookup to address 1 is simpler than
 520          * trying to figure out which chips revisions should be
 521          * special-cased.
 522          */
 523         if (phy != 1)
 524                 return(0);
 525
 526         /* Reading with autopolling on may trigger PCI errors */
 527         autopoll = CSR_READ_4(sc, BGE_MI_MODE);
 528         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 529                 BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 530                 DELAY(40);
 531         }
 532
 533         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ|BGE_MICOMM_BUSY|
 534             BGE_MIPHY(phy)|BGE_MIREG(reg));
 535
 536         for (i = 0; i < BGE_TIMEOUT; i++) {
 537                 val = CSR_READ_4(sc, BGE_MI_COMM);
 538                 if (!(val & BGE_MICOMM_BUSY))
 539                         break;
 540         }
 541
 542         if (i == BGE_TIMEOUT) {
 543                 printf("bge%d: PHY read timed out\n", sc->bge_unit);
 544                 val = 0;
 545                 goto done;
 546         }
 547
 548         val = CSR_READ_4(sc, BGE_MI_COMM);
 549
 550 done:
 551         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 552                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 553                 DELAY(40);
 554         }
 555
 556         if (val & BGE_MICOMM_READFAIL)
 557                 return(0);
 558
 559         return(val & 0xFFFF);
 560 }
 561
 562 static int
 563 bge_miibus_writereg(dev, phy, reg, val)
 564         device_t dev;
 565         int phy, reg, val;
 566 {
 567         struct bge_softc *sc;
 568         u_int32_t autopoll;
 569         int i;
 570
 571         sc = device_get_softc(dev);
 572
 573         /* Reading with autopolling on may trigger PCI errors */
 574         autopoll = CSR_READ_4(sc, BGE_MI_MODE);
 575         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 576                 BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 577                 DELAY(40);
 578         }
 579
 580         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE|BGE_MICOMM_BUSY|
 581             BGE_MIPHY(phy)|BGE_MIREG(reg)|val);
 582
 583         for (i = 0; i < BGE_TIMEOUT; i++) {
 584                 if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY))
 585                         break;
 586         }
 587
 588         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 589                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 590                 DELAY(40);
 591         }
 592
 593         if (i == BGE_TIMEOUT) {
 594                 printf("bge%d: PHY read timed out\n", sc->bge_unit);
 595                 return(0);
 596         }
 597
 598         return(0);
 599 }
 600
 601 static void
 602 bge_miibus_statchg(dev)
 603         device_t dev;
 604 {
 605         struct bge_softc *sc;
 606         struct mii_data *mii;
 607
 608         sc = device_get_softc(dev);
 609         mii = device_get_softc(sc->bge_miibus);
 610
 611         BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE);
 612         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_TX) {
 613                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII);
 614         } else {
 615                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII);
 616         }
 617
 618         if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
 619                 BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 620         } else {
 621                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 622         }
 623
 624         return;
 625 }
 626
 627 /*
 628  * Handle events that have triggered interrupts.
 629  */
 630 static void
 631 bge_handle_events(sc)
 632         struct bge_softc                *sc;
 633 {
 634
 635         return;
 636 }
 637
 638 /*
 639  * Memory management for jumbo frames.
 640  */
 641
 642 static int
 643 bge_alloc_jumbo_mem(sc)
 644         struct bge_softc                *sc;
 645 {
 646         caddr_t                 ptr;
 647         int             i;
 648         struct bge_jpool_entry   *entry;
 649
 650         /* Grab a big chunk o' storage. */
 651         sc->bge_cdata.bge_jumbo_buf = contigmalloc(BGE_JMEM, M_DEVBUF,
 652                 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0);
 653
 654         if (sc->bge_cdata.bge_jumbo_buf == NULL) {
 655                 printf("bge%d: no memory for jumbo buffers!\n", sc->bge_unit);
 656                 return(ENOBUFS);
 657         }
 658
 659         SLIST_INIT(&sc->bge_jfree_listhead);
 660         SLIST_INIT(&sc->bge_jinuse_listhead);
 661
 662         /*
 663          * Now divide it up into 9K pieces and save the addresses
 664          * in an array. Note that we play an evil trick here by using
 665          * the first few bytes in the buffer to hold the the address
 666          * of the softc structure for this interface. This is because
 667          * bge_jfree() needs it, but it is called by the mbuf management
 668          * code which will not pass it to us explicitly.
 669          */
 670         ptr = sc->bge_cdata.bge_jumbo_buf;
 671         for (i = 0; i < BGE_JSLOTS; i++) {
 672                 u_int64_t               **aptr;
 673                 aptr = (u_int64_t **)ptr;
 674                 aptr[0] = (u_int64_t *)sc;
 675                 ptr += sizeof(u_int64_t);
 676                 sc->bge_cdata.bge_jslots[i].bge_buf = ptr;
 677                 sc->bge_cdata.bge_jslots[i].bge_inuse = 0;
 678                 ptr += (BGE_JLEN - sizeof(u_int64_t));
 679                 entry = malloc(sizeof(struct bge_jpool_entry),
 680                                M_DEVBUF, M_NOWAIT);
 681                 if (entry == NULL) {
 682                         contigfree(sc->bge_cdata.bge_jumbo_buf,
 683                             BGE_JMEM, M_DEVBUF);
 684                         sc->bge_cdata.bge_jumbo_buf = NULL;
 685                         printf("bge%d: no memory for jumbo "
 686                             "buffer queue!\n", sc->bge_unit);
 687                         return(ENOBUFS);
 688                 }
 689                 entry->slot = i;
 690                 SLIST_INSERT_HEAD(&sc->bge_jfree_listhead,
 691                     entry, jpool_entries);
 692         }
 693
 694         return(0);
 695 }
 696
 697 static void
 698 bge_free_jumbo_mem(sc)
 699         struct bge_softc *sc;
 700 {
 701         int i;
 702         struct bge_jpool_entry *entry;
 703
 704         for (i = 0; i < BGE_JSLOTS; i++) {
 705                 entry = SLIST_FIRST(&sc->bge_jfree_listhead);
 706                 SLIST_REMOVE_HEAD(&sc->bge_jfree_listhead, jpool_entries);
 707                 free(entry, M_DEVBUF);
 708         }
 709
 710         contigfree(sc->bge_cdata.bge_jumbo_buf, BGE_JMEM, M_DEVBUF);
 711
 712         return;
 713 }
 714
 715 /*
 716  * Allocate a jumbo buffer.
 717  */
 718 static void *
 719 bge_jalloc(sc)
 720         struct bge_softc                *sc;
 721 {
 722         struct bge_jpool_entry   *entry;
 723
 724         entry = SLIST_FIRST(&sc->bge_jfree_listhead);
 725
 726         if (entry == NULL) {
 727                 printf("bge%d: no free jumbo buffers\n", sc->bge_unit);
 728                 return(NULL);
 729         }
 730
 731         SLIST_REMOVE_HEAD(&sc->bge_jfree_listhead, jpool_entries);
 732         SLIST_INSERT_HEAD(&sc->bge_jinuse_listhead, entry, jpool_entries);
 733         sc->bge_cdata.bge_jslots[entry->slot].bge_inuse = 1;
 734         return(sc->bge_cdata.bge_jslots[entry->slot].bge_buf);
 735 }
 736
 737 /*
 738  * Adjust usage count on a jumbo buffer.
 739  */
 740 static void
 741 bge_jref(buf, size)
 742         caddr_t                 buf;
 743         u_int                   size;
 744 {
 745         struct bge_softc                *sc;
 746         u_int64_t               **aptr;
 747         int             i;
 748
 749         /* Extract the softc struct pointer. */
 750         aptr = (u_int64_t **)(buf - sizeof(u_int64_t));
 751         sc = (struct bge_softc *)(aptr[0]);
 752
 753         if (sc == NULL)
 754                 panic("bge_jref: can't find softc pointer!");
 755
 756         if (size != BGE_JUMBO_FRAMELEN)
 757                 panic("bge_jref: adjusting refcount of buf of wrong size!");
 758
 759         /* calculate the slot this buffer belongs to */
 760
 761         i = ((vm_offset_t)aptr
 762              - (vm_offset_t)sc->bge_cdata.bge_jumbo_buf) / BGE_JLEN;
 763
 764         if ((i < 0) || (i >= BGE_JSLOTS))
 765                 panic("bge_jref: asked to reference buffer "
 766                     "that we don't manage!");
 767         else if (sc->bge_cdata.bge_jslots[i].bge_inuse == 0)
 768                 panic("bge_jref: buffer already free!");
 769         else
 770                 sc->bge_cdata.bge_jslots[i].bge_inuse++;
 771
 772         return;
 773 }
 774
 775 /*
 776  * Release a jumbo buffer.
 777  */
 778 static void
 779 bge_jfree(buf, size)
 780         caddr_t                 buf;
 781         u_int                   size;
 782 {
 783         struct bge_softc                *sc;
 784         u_int64_t               **aptr;
 785         int                     i;
 786         struct bge_jpool_entry   *entry;
 787
 788         /* Extract the softc struct pointer. */
 789         aptr = (u_int64_t **)(buf - sizeof(u_int64_t));
 790         sc = (struct bge_softc *)(aptr[0]);
 791
 792         if (sc == NULL)
 793                 panic("bge_jfree: can't find softc pointer!");
 794
 795         if (size != BGE_JUMBO_FRAMELEN)
 796                 panic("bge_jfree: freeing buffer of wrong size!");
 797
 798         /* calculate the slot this buffer belongs to */
 799
 800         i = ((vm_offset_t)aptr
 801              - (vm_offset_t)sc->bge_cdata.bge_jumbo_buf) / BGE_JLEN;
 802
 803         if ((i < 0) || (i >= BGE_JSLOTS))
 804                 panic("bge_jfree: asked to free buffer that we don't manage!");
 805         else if (sc->bge_cdata.bge_jslots[i].bge_inuse == 0)
 806                 panic("bge_jfree: buffer already free!");
 807         else {
 808                 sc->bge_cdata.bge_jslots[i].bge_inuse--;
 809                 if(sc->bge_cdata.bge_jslots[i].bge_inuse == 0) {
 810                         entry = SLIST_FIRST(&sc->bge_jinuse_listhead);
 811                         if (entry == NULL)
 812                                 panic("bge_jfree: buffer not in use!");
 813                         entry->slot = i;
 814                         SLIST_REMOVE_HEAD(&sc->bge_jinuse_listhead,
 815                                           jpool_entries);
 816                         SLIST_INSERT_HEAD(&sc->bge_jfree_listhead,
 817                                           entry, jpool_entries);
 818                 }
 819         }
 820
 821         return;
 822 }
 823
 824
 825 /*
 826  * Intialize a standard receive ring descriptor.
 827  */
 828 static int
 829 bge_newbuf_std(sc, i, m)
 830         struct bge_softc        *sc;
 831         int                     i;
 832         struct mbuf             *m;
 833 {
 834         struct mbuf             *m_new = NULL;
 835         struct bge_rx_bd        *r;
 836
 837         if (m == NULL) {
 838                 MGETHDR(m_new, M_DONTWAIT, MT_DATA);
 839                 if (m_new == NULL) {
 840                         return(ENOBUFS);
 841                 }
 842
 843                 MCLGET(m_new, M_DONTWAIT);
 844                 if (!(m_new->m_flags & M_EXT)) {
 845                         m_freem(m_new);
 846                         return(ENOBUFS);
 847                 }
 848                 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
 849         } else {
 850                 m_new = m;
 851                 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
 852                 m_new->m_data = m_new->m_ext.ext_buf;
 853         }
 854
 855         if (!sc->bge_rx_alignment_bug)
 856                 m_adj(m_new, ETHER_ALIGN);
 857         sc->bge_cdata.bge_rx_std_chain[i] = m_new;
 858         r = &sc->bge_rdata->bge_rx_std_ring[i];
 859         BGE_HOSTADDR(r->bge_addr, vtophys(mtod(m_new, caddr_t)));
 860         r->bge_flags = BGE_RXBDFLAG_END;
 861         r->bge_len = m_new->m_len;
 862         r->bge_idx = i;
 863
 864         return(0);
 865 }
 866
 867 /*
 868  * Initialize a jumbo receive ring descriptor. This allocates
 869  * a jumbo buffer from the pool managed internally by the driver.
 870  */
 871 static int
 872 bge_newbuf_jumbo(sc, i, m)
 873         struct bge_softc *sc;
 874         int i;
 875         struct mbuf *m;
 876 {
 877         struct mbuf *m_new = NULL;
 878         struct bge_rx_bd *r;
 879
 880         if (m == NULL) {
 881                 caddr_t                 *buf = NULL;
 882
 883                 /* Allocate the mbuf. */
 884                 MGETHDR(m_new, M_DONTWAIT, MT_DATA);
 885                 if (m_new == NULL) {
 886                         return(ENOBUFS);
 887                 }
 888
 889                 /* Allocate the jumbo buffer */
 890                 buf = bge_jalloc(sc);
 891                 if (buf == NULL) {
 892                         m_freem(m_new);
 893                         printf("bge%d: jumbo allocation failed "
 894                             "-- packet dropped!\n", sc->bge_unit);
 895                         return(ENOBUFS);
 896                 }
 897
 898                 /* Attach the buffer to the mbuf. */
 899                 m_new->m_data = m_new->m_ext.ext_buf = (void *)buf;
 900                 m_new->m_flags |= M_EXT;
 901                 m_new->m_len = m_new->m_pkthdr.len =
 902                     m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN;
 903                 m_new->m_ext.ext_free = bge_jfree;
 904                 m_new->m_ext.ext_ref = bge_jref;
 905         } else {
 906                 m_new = m;
 907                 m_new->m_data = m_new->m_ext.ext_buf;
 908                 m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN;
 909         }
 910
 911         if (!sc->bge_rx_alignment_bug)
 912                 m_adj(m_new, ETHER_ALIGN);
 913         /* Set up the descriptor. */
 914         r = &sc->bge_rdata->bge_rx_jumbo_ring[i];
 915         sc->bge_cdata.bge_rx_jumbo_chain[i] = m_new;
 916         BGE_HOSTADDR(r->bge_addr, vtophys(mtod(m_new, caddr_t)));
 917         r->bge_flags = BGE_RXBDFLAG_END|BGE_RXBDFLAG_JUMBO_RING;
 918         r->bge_len = m_new->m_len;
 919         r->bge_idx = i;
 920
 921         return(0);
 922 }
 923
 924 /*
 925  * The standard receive ring has 512 entries in it. At 2K per mbuf cluster,
 926  * that's 1MB or memory, which is a lot. For now, we fill only the first
 927  * 256 ring entries and hope that our CPU is fast enough to keep up with
 928  * the NIC.
 929  */
 930 static int
 931 bge_init_rx_ring_std(sc)
 932         struct bge_softc *sc;
 933 {
 934         int i;
 935
 936         for (i = 0; i < BGE_SSLOTS; i++) {
 937                 if (bge_newbuf_std(sc, i, NULL) == ENOBUFS)
 938                         return(ENOBUFS);
 939         };
 940
 941         sc->bge_std = i - 1;
 942         CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
 943
 944         return(0);
 945 }
 946
 947 static void
 948 bge_free_rx_ring_std(sc)
 949         struct bge_softc *sc;
 950 {
 951         int i;
 952
 953         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
 954                 if (sc->bge_cdata.bge_rx_std_chain[i] != NULL) {
 955                         m_freem(sc->bge_cdata.bge_rx_std_chain[i]);
 956                         sc->bge_cdata.bge_rx_std_chain[i] = NULL;
 957                 }
 958                 bzero((char *)&sc->bge_rdata->bge_rx_std_ring[i],
 959                     sizeof(struct bge_rx_bd));
 960         }
 961
 962         return;
 963 }
 964
 965 static int
 966 bge_init_rx_ring_jumbo(sc)
 967         struct bge_softc *sc;
 968 {
 969         int i;
 970         struct bge_rcb *rcb;
 971
 972         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 973                 if (bge_newbuf_jumbo(sc, i, NULL) == ENOBUFS)
 974                         return(ENOBUFS);
 975         };
 976
 977         sc->bge_jumbo = i - 1;
 978
 979         rcb = &sc->bge_rdata->bge_info.bge_jumbo_rx_rcb;
 980         rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0, 0);
 981         CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
 982
 983         CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
 984
 985         return(0);
 986 }
 987
 988 static void
 989 bge_free_rx_ring_jumbo(sc)
 990         struct bge_softc *sc;
 991 {
 992         int i;
 993
 994         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 995                 if (sc->bge_cdata.bge_rx_jumbo_chain[i] != NULL) {
 996                         m_freem(sc->bge_cdata.bge_rx_jumbo_chain[i]);
 997                         sc->bge_cdata.bge_rx_jumbo_chain[i] = NULL;
 998                 }
 999                 bzero((char *)&sc->bge_rdata->bge_rx_jumbo_ring[i],
1000                     sizeof(struct bge_rx_bd));
1001         }
1002
1003         return;
1004 }
1005
1006 static void
1007 bge_free_tx_ring(sc)
1008         struct bge_softc *sc;
1009 {
1010         int i;
1011
1012         if (sc->bge_rdata->bge_tx_ring == NULL)
1013                 return;
1014
1015         for (i = 0; i < BGE_TX_RING_CNT; i++) {
1016                 if (sc->bge_cdata.bge_tx_chain[i] != NULL) {
1017                         m_freem(sc->bge_cdata.bge_tx_chain[i]);
1018                         sc->bge_cdata.bge_tx_chain[i] = NULL;
1019                 }
1020                 bzero((char *)&sc->bge_rdata->bge_tx_ring[i],
1021                     sizeof(struct bge_tx_bd));
1022         }
1023
1024         return;
1025 }
1026
1027 static int
1028 bge_init_tx_ring(sc)
1029         struct bge_softc *sc;
1030 {
1031         sc->bge_txcnt = 0;
1032         sc->bge_tx_saved_considx = 0;
1033
1034         CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, 0);
1035         /* 5700 b2 errata */
1036         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
1037                 CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, 0);
1038
1039         CSR_WRITE_4(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
1040         /* 5700 b2 errata */
1041         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
1042                 CSR_WRITE_4(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
1043
1044         return(0);
1045 }
1046
1047 #define BGE_POLY        0xEDB88320
1048
1049 static u_int32_t
1050 bge_crc(addr)
1051         caddr_t addr;
1052 {
1053         u_int32_t idx, bit, data, crc;
1054
1055         /* Compute CRC for the address value. */
1056         crc = 0xFFFFFFFF; /* initial value */
1057
1058         for (idx = 0; idx < 6; idx++) {
1059                 for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1)
1060                         crc = (crc >> 1) ^ (((crc ^ data) & 1) ? BGE_POLY : 0);
1061         }
1062
1063         return(crc & 0x7F);
1064 }
1065
1066 static void
1067 bge_setmulti(sc)
1068         struct bge_softc *sc;
1069 {
1070         struct ifnet *ifp;
1071         struct ifmultiaddr *ifma;
1072         u_int32_t hashes[4] = { 0, 0, 0, 0 };
1073         int h, i;
1074
1075         ifp = &sc->arpcom.ac_if;
1076
1077         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
1078                 for (i = 0; i < 4; i++)
1079                         CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0xFFFFFFFF);
1080                 return;
1081         }
1082
1083         /* First, zot all the existing filters. */
1084         for (i = 0; i < 4; i++)
1085                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0);
1086
1087         /* Now program new ones. */
1088         for (ifma = ifp->if_multiaddrs.lh_first;
1089             ifma != NULL; ifma = ifma->ifma_link.le_next) {
1090                 if (ifma->ifma_addr->sa_family != AF_LINK)
1091                         continue;
1092                 h = bge_crc(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
1093                 hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F);
1094         }
1095
1096         for (i = 0; i < 4; i++)
1097                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]);
1098
1099         return;
1100 }
1101
1102 /*
1103  * Do endian, PCI and DMA initialization. Also check the on-board ROM
1104  * self-test results.
1105  */
1106 static int
1107 bge_chipinit(sc)
1108         struct bge_softc *sc;
1109 {
1110         int                     i;
1111         u_int32_t               dma_rw_ctl;
1112
1113         /* Set endianness before we access any non-PCI registers. */
1114 #if BYTE_ORDER == BIG_ENDIAN
1115         pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL,
1116             BGE_BIGENDIAN_INIT, 4);
1117 #else
1118         pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL,
1119             BGE_LITTLEENDIAN_INIT, 4);
1120 #endif
1121
1122         /*
1123          * Check the 'ROM failed' bit on the RX CPU to see if
1124          * self-tests passed.
1125          */
1126         if (CSR_READ_4(sc, BGE_RXCPU_MODE) & BGE_RXCPUMODE_ROMFAIL) {
1127                 printf("bge%d: RX CPU self-diagnostics failed!\n",
1128                     sc->bge_unit);
1129                 return(ENODEV);
1130         }
1131
1132         /* Clear the MAC control register */
1133         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
1134
1135         /*
1136          * Clear the MAC statistics block in the NIC's
1137          * internal memory.
1138          */
1139         for (i = BGE_STATS_BLOCK;
1140             i < BGE_STATS_BLOCK_END + 1; i += sizeof(u_int32_t))
1141                 BGE_MEMWIN_WRITE(sc, i, 0);
1142
1143         for (i = BGE_STATUS_BLOCK;
1144             i < BGE_STATUS_BLOCK_END + 1; i += sizeof(u_int32_t))
1145                 BGE_MEMWIN_WRITE(sc, i, 0);
1146
1147         /* Set up the PCI DMA control register. */
1148         if (pci_read_config(sc->bge_dev, BGE_PCI_PCISTATE, 4) &
1149             BGE_PCISTATE_PCI_BUSMODE) {
1150                 /* Conventional PCI bus */
1151                 dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1152                     (0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1153                     (0x7 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
1154                     (0x0F);
1155         } else {
1156                 /* PCI-X bus */
1157                 /*
1158                  * The 5704 uses a different encoding of read/write
1159                  * watermarks.
1160                  */
1161                 if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
1162                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1163                             (0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1164                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
1165                 else
1166                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1167                             (0x3 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1168                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
1169                             (0x0F);
1170
1171                 /*
1172                  * 5703 and 5704 need ONEDMA_AT_ONCE as a workaround
1173                  * for hardware bugs.
1174                  */
1175                 if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
1176                     sc->bge_asicrev == BGE_ASICREV_BCM5704) {
1177                         u_int32_t tmp;
1178
1179                         tmp = CSR_READ_4(sc, BGE_PCI_CLKCTL) & 0x1f;
1180                         if (tmp == 0x6 || tmp == 0x7)
1181                                 dma_rw_ctl |= BGE_PCIDMARWCTL_ONEDMA_ATONCE;
1182                 }
1183         }
1184
1185         if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
1186             sc->bge_asicrev == BGE_ASICREV_BCM5704 ||
1187             sc->bge_asicrev == BGE_ASICREV_BCM5705)
1188                 dma_rw_ctl &= ~BGE_PCIDMARWCTL_MINDMA;
1189         pci_write_config(sc->bge_dev, BGE_PCI_DMA_RW_CTL, dma_rw_ctl, 4);
1190
1191         /*
1192          * Set up general mode register.
1193          */
1194         CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_MODECTL_WORDSWAP_NONFRAME|
1195             BGE_MODECTL_BYTESWAP_DATA|BGE_MODECTL_WORDSWAP_DATA|
1196             BGE_MODECTL_MAC_ATTN_INTR|BGE_MODECTL_HOST_SEND_BDS|
1197             BGE_MODECTL_TX_NO_PHDR_CSUM|BGE_MODECTL_RX_NO_PHDR_CSUM);
1198
1199         /*
1200          * Disable memory write invalidate.  Apparently it is not supported
1201          * properly by these devices.
1202          */
1203         PCI_CLRBIT(sc->bge_dev, BGE_PCI_CMD, PCIM_CMD_MWIEN, 4);
1204
1205 #ifdef __brokenalpha__
1206         /*
1207          * Must insure that we do not cross an 8K (bytes) boundary
1208          * for DMA reads.  Our highest limit is 1K bytes.  This is a
1209          * restriction on some ALPHA platforms with early revision
1210          * 21174 PCI chipsets, such as the AlphaPC 164lx
1211          */
1212         PCI_SETBIT(sc->bge_dev, BGE_PCI_DMA_RW_CTL,
1213             BGE_PCI_READ_BNDRY_1024BYTES, 4);
1214 #endif
1215
1216         /* Set the timer prescaler (always 66Mhz) */
1217         CSR_WRITE_4(sc, BGE_MISC_CFG, 65 << 1/*BGE_32BITTIME_66MHZ*/);
1218
1219         return(0);
1220 }
1221
1222 static int
1223 bge_blockinit(sc)
1224         struct bge_softc *sc;
1225 {
1226         struct bge_rcb *rcb;
1227         volatile struct bge_rcb *vrcb;
1228         int i;
1229
1230         /*
1231          * Initialize the memory window pointer register so that
1232          * we can access the first 32K of internal NIC RAM. This will
1233          * allow us to set up the TX send ring RCBs and the RX return
1234          * ring RCBs, plus other things which live in NIC memory.
1235          */
1236         CSR_WRITE_4(sc, BGE_PCI_MEMWIN_BASEADDR, 0);
1237
1238         /* Note: the BCM5704 has a smaller mbuf space than other chips. */
1239
1240         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1241                 /* Configure mbuf memory pool */
1242                 if (sc->bge_extram) {
1243                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR,
1244                             BGE_EXT_SSRAM);
1245                         if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
1246                                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000);
1247                         else
1248                                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000);
1249                 } else {
1250                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR,
1251                             BGE_BUFFPOOL_1);
1252                         if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
1253                                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000);
1254                         else
1255                                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000);
1256                 }
1257
1258                 /* Configure DMA resource pool */
1259                 CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_BASEADDR,
1260                     BGE_DMA_DESCRIPTORS);
1261                 CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LEN, 0x2000);
1262         }
1263
1264         /* Configure mbuf pool watermarks */
1265         if (sc->bge_asicrev == BGE_ASICREV_BCM5705) {
1266                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1267                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10);
1268         } else {
1269                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x50);
1270                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x20);
1271         }
1272         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
1273
1274         /* Configure DMA resource watermarks */
1275         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5);
1276         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10);
1277
1278         /* Enable buffer manager */
1279         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1280                 CSR_WRITE_4(sc, BGE_BMAN_MODE,
1281                     BGE_BMANMODE_ENABLE|BGE_BMANMODE_LOMBUF_ATTN);
1282
1283                 /* Poll for buffer manager start indication */
1284                 for (i = 0; i < BGE_TIMEOUT; i++) {
1285                         if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE)
1286                                 break;
1287                         DELAY(10);
1288                 }
1289
1290                 if (i == BGE_TIMEOUT) {
1291                         printf("bge%d: buffer manager failed to start\n",
1292                             sc->bge_unit);
1293                         return(ENXIO);
1294                 }
1295         }
1296
1297         /* Enable flow-through queues */
1298         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
1299         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
1300
1301         /* Wait until queue initialization is complete */
1302         for (i = 0; i < BGE_TIMEOUT; i++) {
1303                 if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0)
1304                         break;
1305                 DELAY(10);
1306         }
1307
1308         if (i == BGE_TIMEOUT) {
1309                 printf("bge%d: flow-through queue init failed\n",
1310                     sc->bge_unit);
1311                 return(ENXIO);
1312         }
1313
1314         /* Initialize the standard RX ring control block */
1315         rcb = &sc->bge_rdata->bge_info.bge_std_rx_rcb;
1316         BGE_HOSTADDR(rcb->bge_hostaddr,
1317             vtophys(&sc->bge_rdata->bge_rx_std_ring));
1318         if (sc->bge_asicrev == BGE_ASICREV_BCM5705)
1319                 rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0);
1320         else
1321                 rcb->bge_maxlen_flags =
1322                     BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN, 0);
1323         if (sc->bge_extram)
1324                 rcb->bge_nicaddr = BGE_EXT_STD_RX_RINGS;
1325         else
1326                 rcb->bge_nicaddr = BGE_STD_RX_RINGS;
1327         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi);
1328         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo);
1329         CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
1330         CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr);
1331
1332         /*
1333          * Initialize the jumbo RX ring control block
1334          * We set the 'ring disabled' bit in the flags
1335          * field until we're actually ready to start
1336          * using this ring (i.e. once we set the MTU
1337          * high enough to require it).
1338          */
1339         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1340                 rcb = &sc->bge_rdata->bge_info.bge_jumbo_rx_rcb;
1341                 BGE_HOSTADDR(rcb->bge_hostaddr,
1342                     vtophys(&sc->bge_rdata->bge_rx_jumbo_ring));
1343                 rcb->bge_maxlen_flags =
1344                     BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN,
1345                     BGE_RCB_FLAG_RING_DISABLED);
1346                 if (sc->bge_extram)
1347                         rcb->bge_nicaddr = BGE_EXT_JUMBO_RX_RINGS;
1348                 else
1349                         rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS;
1350                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI,
1351                     rcb->bge_hostaddr.bge_addr_hi);
1352                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO,
1353                     rcb->bge_hostaddr.bge_addr_lo);
1354                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS,
1355                     rcb->bge_maxlen_flags);
1356                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr);
1357
1358                 /* Set up dummy disabled mini ring RCB */
1359                 rcb = &sc->bge_rdata->bge_info.bge_mini_rx_rcb;
1360                 rcb->bge_maxlen_flags =
1361                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
1362                 CSR_WRITE_4(sc, BGE_RX_MINI_RCB_MAXLEN_FLAGS,
1363                     rcb->bge_maxlen_flags);
1364         }
1365
1366         /*
1367          * Set the BD ring replentish thresholds. The recommended
1368          * values are 1/8th the number of descriptors allocated to
1369          * each ring.
1370          */
1371         CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, BGE_STD_RX_RING_CNT/8);
1372         CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH, BGE_JUMBO_RX_RING_CNT/8);
1373
1374         /*
1375          * Disable all unused send rings by setting the 'ring disabled'
1376          * bit in the flags field of all the TX send ring control blocks.
1377          * These are located in NIC memory.
1378          */
1379         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1380             BGE_SEND_RING_RCB);
1381         for (i = 0; i < BGE_TX_RINGS_EXTSSRAM_MAX; i++) {
1382                 vrcb->bge_maxlen_flags =
1383                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
1384                 vrcb->bge_nicaddr = 0;
1385                 vrcb++;
1386         }
1387
1388         /* Configure TX RCB 0 (we use only the first ring) */
1389         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1390             BGE_SEND_RING_RCB);
1391         vrcb->bge_hostaddr.bge_addr_hi = 0;
1392         BGE_HOSTADDR(vrcb->bge_hostaddr, vtophys(&sc->bge_rdata->bge_tx_ring));
1393         vrcb->bge_nicaddr = BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT);
1394         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1395                 vrcb->bge_maxlen_flags =
1396                     BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0);
1397
1398         /* Disable all unused RX return rings */
1399         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1400             BGE_RX_RETURN_RING_RCB);
1401         for (i = 0; i < BGE_RX_RINGS_MAX; i++) {
1402                 vrcb->bge_hostaddr.bge_addr_hi = 0;
1403                 vrcb->bge_hostaddr.bge_addr_lo = 0;
1404                 vrcb->bge_maxlen_flags =
1405                     BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt,
1406                     BGE_RCB_FLAG_RING_DISABLED);
1407                 vrcb->bge_nicaddr = 0;
1408                 CSR_WRITE_4(sc, BGE_MBX_RX_CONS0_LO +
1409                     (i * (sizeof(u_int64_t))), 0);
1410                 vrcb++;
1411         }
1412
1413         /* Initialize RX ring indexes */
1414         CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, 0);
1415         CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0);
1416         CSR_WRITE_4(sc, BGE_MBX_RX_MINI_PROD_LO, 0);
1417
1418         /*
1419          * Set up RX return ring 0
1420          * Note that the NIC address for RX return rings is 0x00000000.
1421          * The return rings live entirely within the host, so the
1422          * nicaddr field in the RCB isn't used.
1423          */
1424         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1425             BGE_RX_RETURN_RING_RCB);
1426         vrcb->bge_hostaddr.bge_addr_hi = 0;
1427         BGE_HOSTADDR(vrcb->bge_hostaddr,
1428             vtophys(&sc->bge_rdata->bge_rx_return_ring));
1429         vrcb->bge_nicaddr = 0x00000000;
1430         vrcb->bge_maxlen_flags =
1431             BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt, 0);
1432
1433         /* Set random backoff seed for TX */
1434         CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
1435             sc->arpcom.ac_enaddr[0] + sc->arpcom.ac_enaddr[1] +
1436             sc->arpcom.ac_enaddr[2] + sc->arpcom.ac_enaddr[3] +
1437             sc->arpcom.ac_enaddr[4] + sc->arpcom.ac_enaddr[5] +
1438             BGE_TX_BACKOFF_SEED_MASK);
1439
1440         /* Set inter-packet gap */
1441         CSR_WRITE_4(sc, BGE_TX_LENGTHS, 0x2620);
1442
1443         /*
1444          * Specify which ring to use for packets that don't match
1445          * any RX rules.
1446          */
1447         CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08);
1448
1449         /*
1450          * Configure number of RX lists. One interrupt distribution
1451          * list, sixteen active lists, one bad frames class.
1452          */
1453         CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181);
1454
1455         /* Inialize RX list placement stats mask. */
1456         CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF);
1457         CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1);
1458
1459         /* Disable host coalescing until we get it set up */
1460         CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000);
1461
1462         /* Poll to make sure it's shut down. */
1463         for (i = 0; i < BGE_TIMEOUT; i++) {
1464                 if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE))
1465                         break;
1466                 DELAY(10);
1467         }
1468
1469         if (i == BGE_TIMEOUT) {
1470                 printf("bge%d: host coalescing engine failed to idle\n",
1471                     sc->bge_unit);
1472                 return(ENXIO);
1473         }
1474
1475         /* Set up host coalescing defaults */
1476         CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bge_rx_coal_ticks);
1477         CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bge_tx_coal_ticks);
1478         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bge_rx_max_coal_bds);
1479         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bge_tx_max_coal_bds);
1480         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1481                 CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS_INT, 0);
1482                 CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS_INT, 0);
1483         }
1484         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, 0);
1485         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, 0);
1486
1487         /* Set up address of statistics block */
1488         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1489                 CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_HI, 0);
1490                 CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_LO,
1491                     vtophys(&sc->bge_rdata->bge_info.bge_stats));
1492
1493                 CSR_WRITE_4(sc, BGE_HCC_STATS_BASEADDR, BGE_STATS_BLOCK);
1494                 CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_BASEADDR, BGE_STATUS_BLOCK);
1495                 CSR_WRITE_4(sc, BGE_HCC_STATS_TICKS, sc->bge_stat_ticks);
1496         }
1497
1498         /* Set up address of status block */
1499         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI, 0);
1500         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO,
1501             vtophys(&sc->bge_rdata->bge_status_block));
1502
1503         sc->bge_rdata->bge_status_block.bge_idx[0].bge_rx_prod_idx = 0;
1504         sc->bge_rdata->bge_status_block.bge_idx[0].bge_tx_cons_idx = 0;
1505
1506         /* Turn on host coalescing state machine */
1507         CSR_WRITE_4(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
1508
1509         /* Turn on RX BD completion state machine and enable attentions */
1510         CSR_WRITE_4(sc, BGE_RBDC_MODE,
1511             BGE_RBDCMODE_ENABLE|BGE_RBDCMODE_ATTN);
1512
1513         /* Turn on RX list placement state machine */
1514         CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
1515
1516         /* Turn on RX list selector state machine. */
1517         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1518                 CSR_WRITE_4(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
1519
1520         /* Turn on DMA, clear stats */
1521         CSR_WRITE_4(sc, BGE_MAC_MODE, BGE_MACMODE_TXDMA_ENB|
1522             BGE_MACMODE_RXDMA_ENB|BGE_MACMODE_RX_STATS_CLEAR|
1523             BGE_MACMODE_TX_STATS_CLEAR|BGE_MACMODE_RX_STATS_ENB|
1524             BGE_MACMODE_TX_STATS_ENB|BGE_MACMODE_FRMHDR_DMA_ENB|
1525             (sc->bge_tbi ? BGE_PORTMODE_TBI : BGE_PORTMODE_MII));
1526
1527         /* Set misc. local control, enable interrupts on attentions */
1528         CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_ONATTN);
1529
1530 #ifdef notdef
1531         /* Assert GPIO pins for PHY reset */
1532         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0|
1533             BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUT2);
1534         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0|
1535             BGE_MLC_MISCIO_OUTEN1|BGE_MLC_MISCIO_OUTEN2);
1536 #endif
1537
1538         /* Turn on DMA completion state machine */
1539         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1540                 CSR_WRITE_4(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
1541
1542         /* Turn on write DMA state machine */
1543         CSR_WRITE_4(sc, BGE_WDMA_MODE,
1544             BGE_WDMAMODE_ENABLE|BGE_WDMAMODE_ALL_ATTNS);
1545
1546         /* Turn on read DMA state machine */
1547         CSR_WRITE_4(sc, BGE_RDMA_MODE,
1548             BGE_RDMAMODE_ENABLE|BGE_RDMAMODE_ALL_ATTNS);
1549
1550         /* Turn on RX data completion state machine */
1551         CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
1552
1553         /* Turn on RX BD initiator state machine */
1554         CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
1555
1556         /* Turn on RX data and RX BD initiator state machine */
1557         CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE);
1558
1559         /* Turn on Mbuf cluster free state machine */
1560         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1561                 CSR_WRITE_4(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
1562
1563         /* Turn on send BD completion state machine */
1564         CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
1565
1566         /* Turn on send data completion state machine */
1567         CSR_WRITE_4(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
1568
1569         /* Turn on send data initiator state machine */
1570         CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
1571
1572         /* Turn on send BD initiator state machine */
1573         CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
1574
1575         /* Turn on send BD selector state machine */
1576         CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
1577
1578         CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF);
1579         CSR_WRITE_4(sc, BGE_SDI_STATS_CTL,
1580             BGE_SDISTATSCTL_ENABLE|BGE_SDISTATSCTL_FASTER);
1581
1582         /* ack/clear link change events */
1583         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1584             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1585             BGE_MACSTAT_LINK_CHANGED);
1586
1587         /* Enable PHY auto polling (for MII/GMII only) */
1588         if (sc->bge_tbi) {
1589                 CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK);
1590         } else {
1591                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL|10<<16);
1592                 if (sc->bge_asicrev == BGE_ASICREV_BCM5700)
1593                         CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
1594                             BGE_EVTENB_MI_INTERRUPT);
1595         }
1596
1597         /* Enable link state change attentions. */
1598         BGE_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED);
1599
1600         return(0);
1601 }
1602
1603 /*
1604  * Probe for a Broadcom chip. Check the PCI vendor and device IDs
1605  * against our list and return its name if we find a match. Note
1606  * that since the Broadcom controller contains VPD support, we
1607  * can get the device name string from the controller itself instead
1608  * of the compiled-in string. This is a little slow, but it guarantees
1609  * we'll always announce the right product name.
1610  */
1611 static int
1612 bge_probe(dev)
1613         device_t dev;
1614 {
1615         struct bge_type *t;
1616         struct bge_softc *sc;
1617         char *descbuf;
1618
1619         t = bge_devs;
1620
1621         sc = device_get_softc(dev);
1622         bzero(sc, sizeof(struct bge_softc));
1623         sc->bge_unit = device_get_unit(dev);
1624         sc->bge_dev = dev;
1625
1626         while(t->bge_name != NULL) {
1627                 if ((pci_get_vendor(dev) == t->bge_vid) &&
1628                     (pci_get_device(dev) == t->bge_did)) {
1629 #ifdef notdef
1630                         bge_vpd_read(sc);
1631                         device_set_desc(dev, sc->bge_vpd_prodname);
1632 #endif
1633                         descbuf = malloc(BGE_DEVDESC_MAX, M_TEMP, M_NOWAIT);
1634                         if (descbuf == NULL)
1635                                 return(ENOMEM);
1636                         snprintf(descbuf, BGE_DEVDESC_MAX,
1637                             "%s, ASIC rev. %#04x", t->bge_name,
1638                             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) >> 16);
1639                         device_set_desc_copy(dev, descbuf);
1640                         if (pci_get_subvendor(dev) == PCI_VENDOR_DELL)
1641                                 sc->bge_no_3_led = 1;
1642                         free(descbuf, M_TEMP);
1643                         return(0);
1644                 }
1645                 t++;
1646         }
1647
1648         return(ENXIO);
1649 }
1650
1651 static int
1652 bge_attach(dev)
1653         device_t dev;
1654 {
1655         int s;
1656         u_int32_t command;
1657         struct ifnet *ifp;
1658         struct bge_softc *sc;
1659         u_int32_t hwcfg = 0;
1660         u_int32_t mac_addr = 0;
1661         int unit, error = 0, rid;
1662         uint8_t ether_addr[ETHER_ADDR_LEN];
1663
1664         s = splimp();
1665
1666         sc = device_get_softc(dev);
1667         unit = device_get_unit(dev);
1668         sc->bge_dev = dev;
1669         sc->bge_unit = unit;
1670
1671         /*
1672          * Map control/status registers.
1673          */
1674         command = pci_read_config(dev, PCIR_COMMAND, 4);
1675         command |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
1676         pci_write_config(dev, PCIR_COMMAND, command, 4);
1677         command = pci_read_config(dev, PCIR_COMMAND, 4);
1678
1679         if (!(command & PCIM_CMD_MEMEN)) {
1680                 printf("bge%d: failed to enable memory mapping!\n", unit);
1681                 error = ENXIO;
1682                 goto fail;
1683         }
1684
1685         rid = BGE_PCI_BAR0;
1686         sc->bge_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
1687             0, ~0, 1, RF_ACTIVE);
1688
1689         if (sc->bge_res == NULL) {
1690                 printf ("bge%d: couldn't map memory\n", unit);
1691                 error = ENXIO;
1692                 goto fail;
1693         }
1694
1695         sc->bge_btag = rman_get_bustag(sc->bge_res);
1696         sc->bge_bhandle = rman_get_bushandle(sc->bge_res);
1697         sc->bge_vhandle = (vm_offset_t)rman_get_virtual(sc->bge_res);
1698
1699         /*
1700          * XXX FIXME: rman_get_virtual() on the alpha is currently
1701          * broken and returns a physical address instead of a kernel
1702          * virtual address. Consequently, we need to do a little
1703          * extra mangling of the vhandle on the alpha. This should
1704          * eventually be fixed! The whole idea here is to get rid
1705          * of platform dependencies.
1706          */
1707 #ifdef __alpha__
1708         if (pci_cvt_to_bwx(sc->bge_vhandle))
1709                 sc->bge_vhandle = pci_cvt_to_bwx(sc->bge_vhandle);
1710         else
1711                 sc->bge_vhandle = pci_cvt_to_dense(sc->bge_vhandle);
1712         sc->bge_vhandle = ALPHA_PHYS_TO_K0SEG(sc->bge_vhandle);
1713 #endif
1714
1715         /* Allocate interrupt */
1716         rid = 0;
1717
1718         sc->bge_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
1719             RF_SHAREABLE | RF_ACTIVE);
1720
1721         if (sc->bge_irq == NULL) {
1722                 printf("bge%d: couldn't map interrupt\n", unit);
1723                 error = ENXIO;
1724                 goto fail;
1725         }
1726
1727         error = bus_setup_intr(dev, sc->bge_irq, INTR_TYPE_NET,
1728            bge_intr, sc, &sc->bge_intrhand);
1729
1730         if (error) {
1731                 bge_release_resources(sc);
1732                 printf("bge%d: couldn't set up irq\n", unit);
1733                 goto fail;
1734         }
1735
1736         sc->bge_unit = unit;
1737
1738         /* Try to reset the chip. */
1739         bge_reset(sc);
1740
1741         if (bge_chipinit(sc)) {
1742                 printf("bge%d: chip initialization failed\n", sc->bge_unit);
1743                 bge_release_resources(sc);
1744                 error = ENXIO;
1745                 goto fail;
1746         }
1747
1748         /*
1749          * Get station address from the EEPROM.
1750          */
1751         mac_addr = bge_readmem_ind(sc, 0x0c14);
1752         if ((mac_addr >> 16) == 0x484b) {
1753                 ether_addr[0] = (uint8_t)(mac_addr >> 8);
1754                 ether_addr[1] = (uint8_t)mac_addr;
1755                 mac_addr = bge_readmem_ind(sc, 0x0c18);
1756                 ether_addr[2] = (uint8_t)(mac_addr >> 24);
1757                 ether_addr[3] = (uint8_t)(mac_addr >> 16);
1758                 ether_addr[4] = (uint8_t)(mac_addr >> 8);
1759                 ether_addr[5] = (uint8_t)mac_addr;
1760         } else if (bge_read_eeprom(sc, ether_addr,
1761             BGE_EE_MAC_OFFSET + 2, ETHER_ADDR_LEN)) {
1762                 printf("bge%d: failed to read station address\n", unit);
1763                 bge_release_resources(sc);
1764                 error = ENXIO;
1765                 goto fail;
1766         }
1767
1768         /*
1769          * A Broadcom chip was detected. Inform the world.
1770          */
1771         printf("bge%d: Ethernet address: %6D\n", unit,
1772             sc->arpcom.ac_enaddr, ":");
1773
1774         /* Allocate the general information block and ring buffers. */
1775         sc->bge_rdata = contigmalloc(sizeof(struct bge_ring_data), M_DEVBUF,
1776             M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0);
1777
1778         if (sc->bge_rdata == NULL) {
1779                 bge_release_resources(sc);
1780                 error = ENXIO;
1781                 printf("bge%d: no memory for list buffers!\n", sc->bge_unit);
1782                 goto fail;
1783         }
1784
1785         bzero(sc->bge_rdata, sizeof(struct bge_ring_data));
1786
1787         /* Save ASIC rev. */
1788
1789         sc->bge_chipid =
1790             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) &
1791             BGE_PCIMISCCTL_ASICREV;
1792         sc->bge_asicrev = BGE_ASICREV(sc->bge_chipid);
1793         sc->bge_chiprev = BGE_CHIPREV(sc->bge_chipid);
1794
1795         /*
1796          * Try to allocate memory for jumbo buffers.
1797          * The 5705 does not appear to support jumbo frames.
1798          */
1799         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1800                 if (bge_alloc_jumbo_mem(sc)) {
1801                         printf("bge%d: jumbo buffer allocation "
1802                             "failed\n", sc->bge_unit);
1803                         bge_release_resources(sc);
1804                         error = ENXIO;
1805                         goto fail;
1806                 }
1807         }
1808
1809         /* Set default tuneable values. */
1810         sc->bge_stat_ticks = BGE_TICKS_PER_SEC;
1811         sc->bge_rx_coal_ticks = 150;
1812         sc->bge_tx_coal_ticks = 150;
1813         sc->bge_rx_max_coal_bds = 64;
1814         sc->bge_tx_max_coal_bds = 128;
1815
1816         /* 5705 limits RX return ring to 512 entries. */
1817         if (sc->bge_asicrev == BGE_ASICREV_BCM5705)
1818                 sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT_5705;
1819         else
1820                 sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT;
1821
1822         /* Set up ifnet structure */
1823         ifp = &sc->arpcom.ac_if;
1824         ifp->if_softc = sc;
1825         if_initname(ifp, "bge", sc->bge_unit);
1826         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1827         ifp->if_ioctl = bge_ioctl;
1828         ifp->if_output = ether_output;
1829         ifp->if_start = bge_start;
1830         ifp->if_watchdog = bge_watchdog;
1831         ifp->if_init = bge_init;
1832         ifp->if_mtu = ETHERMTU;
1833         ifp->if_snd.ifq_maxlen = BGE_TX_RING_CNT - 1;
1834         ifp->if_hwassist = BGE_CSUM_FEATURES;
1835         ifp->if_capabilities = IFCAP_HWCSUM;
1836         ifp->if_capenable = ifp->if_capabilities;
1837
1838         /*
1839          * Figure out what sort of media we have by checking the
1840          * hardware config word in the first 32k of NIC internal memory,
1841          * or fall back to examining the EEPROM if necessary.
1842          * Note: on some BCM5700 cards, this value appears to be unset.
1843          * If that's the case, we have to rely on identifying the NIC
1844          * by its PCI subsystem ID, as we do below for the SysKonnect
1845          * SK-9D41.
1846          */
1847         if (bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER)
1848                 hwcfg = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG);
1849         else {
1850                 bge_read_eeprom(sc, (caddr_t)&hwcfg,
1851                                 BGE_EE_HWCFG_OFFSET, sizeof(hwcfg));
1852                 hwcfg = ntohl(hwcfg);
1853         }
1854
1855         if ((hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER)
1856                 sc->bge_tbi = 1;
1857
1858         /* The SysKonnect SK-9D41 is a 1000baseSX card. */
1859         if ((pci_read_config(dev, BGE_PCI_SUBSYS, 4) >> 16) ==
1860              PCI_PRODUCT_SCHNEIDERKOCH_SK_9D41)
1861                 sc->bge_tbi = 1;
1862
1863         if (sc->bge_tbi) {
1864                 ifmedia_init(&sc->bge_ifmedia, IFM_IMASK,
1865                     bge_ifmedia_upd, bge_ifmedia_sts);
1866                 ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_1000_SX, 0, NULL);
1867                 ifmedia_add(&sc->bge_ifmedia,
1868                     IFM_ETHER|IFM_1000_SX|IFM_FDX, 0, NULL);
1869                 ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
1870                 ifmedia_set(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO);
1871         } else {
1872                 /*
1873                  * Do transceiver setup.
1874                  */
1875                 if (mii_phy_probe(dev, &sc->bge_miibus,
1876                     bge_ifmedia_upd, bge_ifmedia_sts)) {
1877                         printf("bge%d: MII without any PHY!\n", sc->bge_unit);
1878                         bge_release_resources(sc);
1879                         bge_free_jumbo_mem(sc);
1880                         error = ENXIO;
1881                         goto fail;
1882                 }
1883         }
1884
1885         /*
1886          * When using the BCM5701 in PCI-X mode, data corruption has
1887          * been observed in the first few bytes of some received packets.
1888          * Aligning the packet buffer in memory eliminates the corruption.
1889          * Unfortunately, this misaligns the packet payloads.  On platforms
1890          * which do not support unaligned accesses, we will realign the
1891          * payloads by copying the received packets.
1892          */
1893         switch (sc->bge_chipid) {
1894         case BGE_CHIPID_BCM5701_A0:
1895         case BGE_CHIPID_BCM5701_B0:
1896         case BGE_CHIPID_BCM5701_B2:
1897         case BGE_CHIPID_BCM5701_B5:
1898                 /* If in PCI-X mode, work around the alignment bug. */
1899                 if ((pci_read_config(dev, BGE_PCI_PCISTATE, 4) &
1900                     (BGE_PCISTATE_PCI_BUSMODE | BGE_PCISTATE_PCI_BUSSPEED)) ==
1901                     BGE_PCISTATE_PCI_BUSSPEED)
1902                         sc->bge_rx_alignment_bug = 1;
1903                 break;
1904         }
1905
1906         /*
1907          * Call MI attach routine.
1908          */
1909         ether_ifattach(ifp, ether_addr);
1910         callout_handle_init(&sc->bge_stat_ch);
1911
1912 fail:
1913         splx(s);
1914
1915         return(error);
1916 }
1917
1918 static int
1919 bge_detach(dev)
1920         device_t dev;
1921 {
1922         struct bge_softc *sc;
1923         struct ifnet *ifp;
1924         int s;
1925
1926         s = splimp();
1927
1928         sc = device_get_softc(dev);
1929         ifp = &sc->arpcom.ac_if;
1930
1931         ether_ifdetach(ifp);
1932         bge_stop(sc);
1933         bge_reset(sc);
1934
1935         if (sc->bge_tbi) {
1936                 ifmedia_removeall(&sc->bge_ifmedia);
1937         } else {
1938                 bus_generic_detach(dev);
1939                 device_delete_child(dev, sc->bge_miibus);
1940         }
1941
1942         bge_release_resources(sc);
1943         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1944                 bge_free_jumbo_mem(sc);
1945
1946         splx(s);
1947
1948         return(0);
1949 }
1950
1951 static void
1952 bge_release_resources(sc)
1953         struct bge_softc *sc;
1954 {
1955         device_t dev;
1956
1957         dev = sc->bge_dev;
1958
1959         if (sc->bge_vpd_prodname != NULL)
1960                 free(sc->bge_vpd_prodname, M_DEVBUF);
1961
1962         if (sc->bge_vpd_readonly != NULL)
1963                 free(sc->bge_vpd_readonly, M_DEVBUF);
1964
1965         if (sc->bge_intrhand != NULL)
1966                 bus_teardown_intr(dev, sc->bge_irq, sc->bge_intrhand);
1967
1968         if (sc->bge_irq != NULL)
1969                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->bge_irq);
1970
1971         if (sc->bge_res != NULL)
1972                 bus_release_resource(dev, SYS_RES_MEMORY,
1973                     BGE_PCI_BAR0, sc->bge_res);
1974
1975         if (sc->bge_rdata != NULL)
1976                 contigfree(sc->bge_rdata,
1977                     sizeof(struct bge_ring_data), M_DEVBUF);
1978
1979         return;
1980 }
1981
1982 static void
1983 bge_reset(sc)
1984         struct bge_softc *sc;
1985 {
1986         device_t dev;
1987         u_int32_t cachesize, command, pcistate;
1988         int i, val = 0;
1989
1990         dev = sc->bge_dev;
1991
1992         /* Save some important PCI state. */
1993         cachesize = pci_read_config(dev, BGE_PCI_CACHESZ, 4);
1994         command = pci_read_config(dev, BGE_PCI_CMD, 4);
1995         pcistate = pci_read_config(dev, BGE_PCI_PCISTATE, 4);
1996
1997         pci_write_config(dev, BGE_PCI_MISC_CTL,
1998             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
1999             BGE_PCIMISCCTL_ENDIAN_WORDSWAP|BGE_PCIMISCCTL_PCISTATE_RW, 4);
2000
2001         /* Issue global reset */
2002         bge_writereg_ind(sc, BGE_MISC_CFG,
2003             BGE_MISCCFG_RESET_CORE_CLOCKS|(65<<1));
2004
2005         DELAY(1000);
2006
2007         /* Reset some of the PCI state that got zapped by reset */
2008         pci_write_config(dev, BGE_PCI_MISC_CTL,
2009             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2010             BGE_PCIMISCCTL_ENDIAN_WORDSWAP|BGE_PCIMISCCTL_PCISTATE_RW, 4);
2011         pci_write_config(dev, BGE_PCI_CACHESZ, cachesize, 4);
2012         pci_write_config(dev, BGE_PCI_CMD, command, 4);
2013         bge_writereg_ind(sc, BGE_MISC_CFG, (65 << 1));
2014
2015         /*
2016          * Prevent PXE restart: write a magic number to the
2017          * general communications memory at 0xB50.
2018          */
2019         bge_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER);
2020         /*
2021          * Poll the value location we just wrote until
2022          * we see the 1's complement of the magic number.
2023          * This indicates that the firmware initialization
2024          * is complete.
2025          */
2026         for (i = 0; i < BGE_TIMEOUT; i++) {
2027                 val = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM);
2028                 if (val == ~BGE_MAGIC_NUMBER)
2029                         break;
2030                 DELAY(10);
2031         }
2032
2033         if (i == BGE_TIMEOUT) {
2034                 printf("bge%d: firmware handshake timed out\n", sc->bge_unit);
2035                 return;
2036         }
2037
2038         /*
2039          * XXX Wait for the value of the PCISTATE register to
2040          * return to its original pre-reset state. This is a
2041          * fairly good indicator of reset completion. If we don't
2042          * wait for the reset to fully complete, trying to read
2043          * from the device's non-PCI registers may yield garbage
2044          * results.
2045          */
2046         for (i = 0; i < BGE_TIMEOUT; i++) {
2047                 if (pci_read_config(dev, BGE_PCI_PCISTATE, 4) == pcistate)
2048                         break;
2049                 DELAY(10);
2050         }
2051
2052         /* Enable memory arbiter. */
2053         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
2054                 CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
2055
2056         /* Fix up byte swapping */
2057         CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_MODECTL_BYTESWAP_NONFRAME|
2058             BGE_MODECTL_BYTESWAP_DATA);
2059
2060         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
2061
2062         DELAY(10000);
2063
2064         return;
2065 }
2066
2067 /*
2068  * Frame reception handling. This is called if there's a frame
2069  * on the receive return list.
2070  *
2071  * Note: we have to be able to handle two possibilities here:
2072  * 1) the frame is from the jumbo recieve ring
2073  * 2) the frame is from the standard receive ring
2074  */
2075
2076 static void
2077 bge_rxeof(sc)
2078         struct bge_softc *sc;
2079 {
2080         struct ifnet *ifp;
2081         int stdcnt = 0, jumbocnt = 0;
2082
2083         ifp = &sc->arpcom.ac_if;
2084
2085         while(sc->bge_rx_saved_considx !=
2086             sc->bge_rdata->bge_status_block.bge_idx[0].bge_rx_prod_idx) {
2087                 struct bge_rx_bd        *cur_rx;
2088                 u_int32_t               rxidx;
2089                 struct ether_header     *eh;
2090                 struct mbuf             *m = NULL;
2091                 u_int16_t               vlan_tag = 0;
2092                 int                     have_tag = 0;
2093
2094                 cur_rx =
2095             &sc->bge_rdata->bge_rx_return_ring[sc->bge_rx_saved_considx];
2096
2097                 rxidx = cur_rx->bge_idx;
2098                 BGE_INC(sc->bge_rx_saved_considx, sc->bge_return_ring_cnt);
2099
2100                 if (cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) {
2101                         have_tag = 1;
2102                         vlan_tag = cur_rx->bge_vlan_tag;
2103                 }
2104
2105                 if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) {
2106                         BGE_INC(sc->bge_jumbo, BGE_JUMBO_RX_RING_CNT);
2107                         m = sc->bge_cdata.bge_rx_jumbo_chain[rxidx];
2108                         sc->bge_cdata.bge_rx_jumbo_chain[rxidx] = NULL;
2109                         jumbocnt++;
2110                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2111                                 ifp->if_ierrors++;
2112                                 bge_newbuf_jumbo(sc, sc->bge_jumbo, m);
2113                                 continue;
2114                         }
2115                         if (bge_newbuf_jumbo(sc,
2116                             sc->bge_jumbo, NULL) == ENOBUFS) {
2117                                 ifp->if_ierrors++;
2118                                 bge_newbuf_jumbo(sc, sc->bge_jumbo, m);
2119                                 continue;
2120                         }
2121                 } else {
2122                         BGE_INC(sc->bge_std, BGE_STD_RX_RING_CNT);
2123                         m = sc->bge_cdata.bge_rx_std_chain[rxidx];
2124                         sc->bge_cdata.bge_rx_std_chain[rxidx] = NULL;
2125                         stdcnt++;
2126                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2127                                 ifp->if_ierrors++;
2128                                 bge_newbuf_std(sc, sc->bge_std, m);
2129                                 continue;
2130                         }
2131                         if (bge_newbuf_std(sc, sc->bge_std,
2132                             NULL) == ENOBUFS) {
2133                                 ifp->if_ierrors++;
2134                                 bge_newbuf_std(sc, sc->bge_std, m);
2135                                 continue;
2136                         }
2137                 }
2138
2139                 ifp->if_ipackets++;
2140 #ifndef __i386__
2141                 /*
2142                  * The i386 allows unaligned accesses, but for other
2143                  * platforms we must make sure the payload is aligned.
2144                  */
2145                 if (sc->bge_rx_alignment_bug) {
2146                         bcopy(m->m_data, m->m_data + ETHER_ALIGN,
2147                             cur_rx->bge_len);
2148                         m->m_data += ETHER_ALIGN;
2149                 }
2150 #endif
2151                 eh = mtod(m, struct ether_header *);
2152                 m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN;
2153                 m->m_pkthdr.rcvif = ifp;
2154
2155                 /* Remove header from mbuf and pass it on. */
2156                 m_adj(m, sizeof(struct ether_header));
2157
2158 #if 0 /* currently broken for some packets, possibly related to TCP options */
2159                 if (ifp->if_hwassist) {
2160                         m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
2161                         if ((cur_rx->bge_ip_csum ^ 0xffff) == 0)
2162                                 m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
2163                         if (cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM) {
2164                                 m->m_pkthdr.csum_data =
2165                                     cur_rx->bge_tcp_udp_csum;
2166                                 m->m_pkthdr.csum_flags |= CSUM_DATA_VALID;
2167                         }
2168                 }
2169 #endif
2170
2171                 /*
2172                  * If we received a packet with a vlan tag, pass it
2173                  * to vlan_input() instead of ether_input().
2174                  */
2175                 if (have_tag) {
2176                         VLAN_INPUT_TAG(eh, m, vlan_tag);
2177                         have_tag = vlan_tag = 0;
2178                         continue;
2179                 }
2180
2181                 ether_input(ifp, eh, m);
2182         }
2183
2184         CSR_WRITE_4(sc, BGE_MBX_RX_CONS0_LO, sc->bge_rx_saved_considx);
2185         if (stdcnt)
2186                 CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
2187         if (jumbocnt)
2188                 CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
2189
2190         return;
2191 }
2192
2193 static void
2194 bge_txeof(sc)
2195         struct bge_softc *sc;
2196 {
2197         struct bge_tx_bd *cur_tx = NULL;
2198         struct ifnet *ifp;
2199
2200         ifp = &sc->arpcom.ac_if;
2201
2202         /*
2203          * Go through our tx ring and free mbufs for those
2204          * frames that have been sent.
2205          */
2206         while (sc->bge_tx_saved_considx !=
2207             sc->bge_rdata->bge_status_block.bge_idx[0].bge_tx_cons_idx) {
2208                 u_int32_t               idx = 0;
2209
2210                 idx = sc->bge_tx_saved_considx;
2211                 cur_tx = &sc->bge_rdata->bge_tx_ring[idx];
2212                 if (cur_tx->bge_flags & BGE_TXBDFLAG_END)
2213                         ifp->if_opackets++;
2214                 if (sc->bge_cdata.bge_tx_chain[idx] != NULL) {
2215                         m_freem(sc->bge_cdata.bge_tx_chain[idx]);
2216                         sc->bge_cdata.bge_tx_chain[idx] = NULL;
2217                 }
2218                 sc->bge_txcnt--;
2219                 BGE_INC(sc->bge_tx_saved_considx, BGE_TX_RING_CNT);
2220                 ifp->if_timer = 0;
2221         }
2222
2223         if (cur_tx != NULL)
2224                 ifp->if_flags &= ~IFF_OACTIVE;
2225
2226         return;
2227 }
2228
2229 static void
2230 bge_intr(xsc)
2231         void *xsc;
2232 {
2233         struct bge_softc *sc;
2234         struct ifnet *ifp;
2235         u_int32_t status;
2236
2237         sc = xsc;
2238         ifp = &sc->arpcom.ac_if;
2239
2240 #ifdef notdef
2241         /* Avoid this for now -- checking this register is expensive. */
2242         /* Make sure this is really our interrupt. */
2243         if (!(CSR_READ_4(sc, BGE_MISC_LOCAL_CTL) & BGE_MLC_INTR_STATE))
2244                 return;
2245 #endif
2246         /* Ack interrupt and stop others from occuring. */
2247         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 1);
2248
2249         /*
2250          * Process link state changes.
2251          * Grrr. The link status word in the status block does
2252          * not work correctly on the BCM5700 rev AX and BX chips,
2253          * according to all available information. Hence, we have
2254          * to enable MII interrupts in order to properly obtain
2255          * async link changes. Unfortunately, this also means that
2256          * we have to read the MAC status register to detect link
2257          * changes, thereby adding an additional register access to
2258          * the interrupt handler.
2259          */
2260
2261         if (sc->bge_asicrev == BGE_ASICREV_BCM5700) {
2262                 status = CSR_READ_4(sc, BGE_MAC_STS);
2263                 if (status & BGE_MACSTAT_MI_INTERRUPT) {
2264                         sc->bge_link = 0;
2265                         untimeout(bge_tick, sc, sc->bge_stat_ch);
2266                         bge_tick(sc);
2267                         /* Clear the interrupt */
2268                         CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
2269                             BGE_EVTENB_MI_INTERRUPT);
2270                         bge_miibus_readreg(sc->bge_dev, 1, BRGPHY_MII_ISR);
2271                         bge_miibus_writereg(sc->bge_dev, 1, BRGPHY_MII_IMR,
2272                             BRGPHY_INTRS);
2273                 }
2274         } else {
2275                 if ((sc->bge_rdata->bge_status_block.bge_status &
2276                     BGE_STATFLAG_UPDATED) &&
2277                     (sc->bge_rdata->bge_status_block.bge_status &
2278                     BGE_STATFLAG_LINKSTATE_CHANGED)) {
2279                         sc->bge_rdata->bge_status_block.bge_status &=
2280                                 ~(BGE_STATFLAG_UPDATED|
2281                                 BGE_STATFLAG_LINKSTATE_CHANGED);
2282                         /*
2283                          * Sometimes PCS encoding errors are detected in
2284                          * TBI mode (on fiber NICs), and for some reason
2285                          * the chip will signal them as link changes.
2286                          * If we get a link change event, but the 'PCS
2287                          * encoding error' bit in the MAC status register
2288                          * is set, don't bother doing a link check.
2289                          * This avoids spurious "gigabit link up" messages
2290                          * that sometimes appear on fiber NICs during
2291                          * periods of heavy traffic. (There should be no
2292                          * effect on copper NICs.)
2293                          */
2294                         status = CSR_READ_4(sc, BGE_MAC_STS);
2295                         if (!(status & (BGE_MACSTAT_PORT_DECODE_ERROR|
2296                             BGE_MACSTAT_MI_COMPLETE))) {
2297                                 sc->bge_link = 0;
2298                                 untimeout(bge_tick, sc, sc->bge_stat_ch);
2299                                 bge_tick(sc);
2300                         }
2301                         sc->bge_link = 0;
2302                         untimeout(bge_tick, sc, sc->bge_stat_ch);
2303                         bge_tick(sc);
2304                         /* Clear the interrupt */
2305                         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
2306                             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
2307                             BGE_MACSTAT_LINK_CHANGED);
2308
2309                         /* Force flush the status block cached by PCI bridge */
2310                         CSR_READ_4(sc, BGE_MBX_IRQ0_LO);
2311                 }
2312         }
2313
2314         if (ifp->if_flags & IFF_RUNNING) {
2315                 /* Check RX return ring producer/consumer */
2316                 bge_rxeof(sc);
2317
2318                 /* Check TX ring producer/consumer */
2319                 bge_txeof(sc);
2320         }
2321
2322         bge_handle_events(sc);
2323
2324         /* Re-enable interrupts. */
2325         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 0);
2326
2327         if (ifp->if_flags & IFF_RUNNING && ifp->if_snd.ifq_head != NULL)
2328                 bge_start(ifp);
2329
2330         return;
2331 }
2332
2333 static void
2334 bge_tick(xsc)
2335         void *xsc;
2336 {
2337         struct bge_softc *sc;
2338         struct mii_data *mii = NULL;
2339         struct ifmedia *ifm = NULL;
2340         struct ifnet *ifp;
2341         int s;
2342
2343         sc = xsc;
2344         ifp = &sc->arpcom.ac_if;
2345
2346         s = splimp();
2347
2348         if (sc->bge_asicrev == BGE_ASICREV_BCM5705)
2349                 bge_stats_update_regs(sc);
2350         else
2351                 bge_stats_update(sc);
2352         sc->bge_stat_ch = timeout(bge_tick, sc, hz);
2353         if (sc->bge_link) {
2354                 splx(s);
2355                 return;
2356         }
2357
2358         if (sc->bge_tbi) {
2359                 ifm = &sc->bge_ifmedia;
2360                 if (CSR_READ_4(sc, BGE_MAC_STS) &
2361                     BGE_MACSTAT_TBI_PCS_SYNCHED) {
2362                         sc->bge_link++;
2363                         CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF);
2364                         printf("bge%d: gigabit link up\n", sc->bge_unit);
2365                         if (ifp->if_snd.ifq_head != NULL)
2366                                 bge_start(ifp);
2367                 }
2368                 splx(s);
2369                 return;
2370         }
2371
2372         mii = device_get_softc(sc->bge_miibus);
2373         mii_tick(mii);
2374
2375         if (!sc->bge_link) {
2376                 mii_pollstat(mii);
2377                 if (mii->mii_media_status & IFM_ACTIVE &&
2378                     IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
2379                         sc->bge_link++;
2380                         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_TX ||
2381                             IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX)
2382                                 printf("bge%d: gigabit link up\n",
2383                                    sc->bge_unit);
2384                         if (ifp->if_snd.ifq_head != NULL)
2385                                 bge_start(ifp);
2386                 }
2387         }
2388
2389         splx(s);
2390
2391         return;
2392 }
2393
2394 static void
2395 bge_stats_update_regs(sc)
2396         struct bge_softc *sc;
2397 {
2398         struct ifnet *ifp;
2399         struct bge_mac_stats_regs stats;
2400         u_int32_t *s;
2401         int i;
2402
2403         ifp = &sc->arpcom.ac_if;
2404
2405         s = (u_int32_t *)&stats;
2406         for (i = 0; i < sizeof(struct bge_mac_stats_regs); i += 4) {
2407                 *s = CSR_READ_4(sc, BGE_RX_STATS + i);
2408                 s++;
2409         }
2410
2411         ifp->if_collisions +=
2412            (stats.dot3StatsSingleCollisionFrames +
2413            stats.dot3StatsMultipleCollisionFrames +
2414            stats.dot3StatsExcessiveCollisions +
2415            stats.dot3StatsLateCollisions) -
2416            ifp->if_collisions;
2417
2418         return;
2419 }
2420
2421 static void
2422 bge_stats_update(sc)
2423         struct bge_softc *sc;
2424 {
2425         struct ifnet *ifp;
2426         struct bge_stats *stats;
2427
2428         ifp = &sc->arpcom.ac_if;
2429
2430         stats = (struct bge_stats *)(sc->bge_vhandle +
2431             BGE_MEMWIN_START + BGE_STATS_BLOCK);
2432
2433         ifp->if_collisions +=
2434            (stats->txstats.dot3StatsSingleCollisionFrames.bge_addr_lo +
2435            stats->txstats.dot3StatsMultipleCollisionFrames.bge_addr_lo +
2436            stats->txstats.dot3StatsExcessiveCollisions.bge_addr_lo +
2437            stats->txstats.dot3StatsLateCollisions.bge_addr_lo) -
2438            ifp->if_collisions;
2439
2440 #ifdef notdef
2441         ifp->if_collisions +=
2442            (sc->bge_rdata->bge_info.bge_stats.dot3StatsSingleCollisionFrames +
2443            sc->bge_rdata->bge_info.bge_stats.dot3StatsMultipleCollisionFrames +
2444            sc->bge_rdata->bge_info.bge_stats.dot3StatsExcessiveCollisions +
2445            sc->bge_rdata->bge_info.bge_stats.dot3StatsLateCollisions) -
2446            ifp->if_collisions;
2447 #endif
2448
2449         return;
2450 }
2451
2452 /*
2453  * Encapsulate an mbuf chain in the tx ring  by coupling the mbuf data
2454  * pointers to descriptors.
2455  */
2456 static int
2457 bge_encap(sc, m_head, txidx)
2458         struct bge_softc *sc;
2459         struct mbuf *m_head;
2460         u_int32_t *txidx;
2461 {
2462         struct bge_tx_bd        *f = NULL;
2463         struct mbuf             *m;
2464         u_int32_t               frag, cur, cnt = 0;
2465         u_int16_t               csum_flags = 0;
2466         struct ifvlan           *ifv = NULL;
2467
2468         if ((m_head->m_flags & (M_PROTO1|M_PKTHDR)) == (M_PROTO1|M_PKTHDR) &&
2469             m_head->m_pkthdr.rcvif != NULL &&
2470             m_head->m_pkthdr.rcvif->if_type == IFT_L2VLAN)
2471                 ifv = m_head->m_pkthdr.rcvif->if_softc;
2472
2473         m = m_head;
2474         cur = frag = *txidx;
2475
2476         if (m_head->m_pkthdr.csum_flags) {
2477                 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
2478                         csum_flags |= BGE_TXBDFLAG_IP_CSUM;
2479                 if (m_head->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))
2480                         csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM;
2481                 if (m_head->m_flags & M_LASTFRAG)
2482                         csum_flags |= BGE_TXBDFLAG_IP_FRAG_END;
2483                 else if (m_head->m_flags & M_FRAG)
2484                         csum_flags |= BGE_TXBDFLAG_IP_FRAG;
2485         }
2486         /*
2487          * Start packing the mbufs in this chain into
2488          * the fragment pointers. Stop when we run out
2489          * of fragments or hit the end of the mbuf chain.
2490          */
2491         for (m = m_head; m != NULL; m = m->m_next) {
2492                 if (m->m_len != 0) {
2493                         f = &sc->bge_rdata->bge_tx_ring[frag];
2494                         if (sc->bge_cdata.bge_tx_chain[frag] != NULL)
2495                                 break;
2496                         BGE_HOSTADDR(f->bge_addr,
2497                             vtophys(mtod(m, vm_offset_t)));
2498                         f->bge_len = m->m_len;
2499                         f->bge_flags = csum_flags;
2500                         if (ifv != NULL) {
2501                                 f->bge_flags |= BGE_TXBDFLAG_VLAN_TAG;
2502                                 f->bge_vlan_tag = ifv->ifv_tag;
2503                         } else {
2504                                 f->bge_vlan_tag = 0;
2505                         }
2506                         /*
2507                          * Sanity check: avoid coming within 16 descriptors
2508                          * of the end of the ring.
2509                          */
2510                         if ((BGE_TX_RING_CNT - (sc->bge_txcnt + cnt)) < 16)
2511                                 return(ENOBUFS);
2512                         cur = frag;
2513                         BGE_INC(frag, BGE_TX_RING_CNT);
2514                         cnt++;
2515                 }
2516         }
2517
2518         if (m != NULL)
2519                 return(ENOBUFS);
2520
2521         if (frag == sc->bge_tx_saved_considx)
2522                 return(ENOBUFS);
2523
2524         sc->bge_rdata->bge_tx_ring[cur].bge_flags |= BGE_TXBDFLAG_END;
2525         sc->bge_cdata.bge_tx_chain[cur] = m_head;
2526         sc->bge_txcnt += cnt;
2527
2528         *txidx = frag;
2529
2530         return(0);
2531 }
2532
2533 /*
2534  * Main transmit routine. To avoid having to do mbuf copies, we put pointers
2535  * to the mbuf data regions directly in the transmit descriptors.
2536  */
2537 static void
2538 bge_start(ifp)
2539         struct ifnet *ifp;
2540 {
2541         struct bge_softc *sc;
2542         struct mbuf *m_head = NULL;
2543         u_int32_t prodidx = 0;
2544
2545         sc = ifp->if_softc;
2546
2547         if (!sc->bge_link && ifp->if_snd.ifq_len < 10)
2548                 return;
2549
2550         prodidx = CSR_READ_4(sc, BGE_MBX_TX_HOST_PROD0_LO);
2551
2552         while(sc->bge_cdata.bge_tx_chain[prodidx] == NULL) {
2553                 IF_DEQUEUE(&ifp->if_snd, m_head);
2554                 if (m_head == NULL)
2555                         break;
2556
2557                 /*
2558                  * XXX
2559                  * safety overkill.  If this is a fragmented packet chain
2560                  * with delayed TCP/UDP checksums, then only encapsulate
2561                  * it if we have enough descriptors to handle the entire
2562                  * chain at once.
2563                  * (paranoia -- may not actually be needed)
2564                  */
2565                 if (m_head->m_flags & M_FIRSTFRAG &&
2566                     m_head->m_pkthdr.csum_flags & (CSUM_DELAY_DATA)) {
2567                         if ((BGE_TX_RING_CNT - sc->bge_txcnt) <
2568                             m_head->m_pkthdr.csum_data + 16) {
2569                                 IF_PREPEND(&ifp->if_snd, m_head);
2570                                 ifp->if_flags |= IFF_OACTIVE;
2571                                 break;
2572                         }
2573                 }
2574
2575                 /*
2576                  * Pack the data into the transmit ring. If we
2577                  * don't have room, set the OACTIVE flag and wait
2578                  * for the NIC to drain the ring.
2579                  */
2580                 if (bge_encap(sc, m_head, &prodidx)) {
2581                         IF_PREPEND(&ifp->if_snd, m_head);
2582                         ifp->if_flags |= IFF_OACTIVE;
2583                         break;
2584                 }
2585
2586                 /*
2587                  * If there's a BPF listener, bounce a copy of this frame
2588                  * to him.
2589                  */
2590                 if (ifp->if_bpf)
2591                         bpf_mtap(ifp, m_head);
2592         }
2593
2594         /* Transmit */
2595         CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
2596         /* 5700 b2 errata */
2597         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
2598                 CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
2599
2600         /*
2601          * Set a timeout in case the chip goes out to lunch.
2602          */
2603         ifp->if_timer = 5;
2604
2605         return;
2606 }
2607
2608 static void
2609 bge_init(xsc)
2610         void *xsc;
2611 {
2612         struct bge_softc *sc = xsc;
2613         struct ifnet *ifp;
2614         u_int16_t *m;
2615         int s;
2616
2617         s = splimp();
2618
2619         ifp = &sc->arpcom.ac_if;
2620
2621         if (ifp->if_flags & IFF_RUNNING) {
2622                 splx(s);
2623                 return;
2624         }
2625
2626         /* Cancel pending I/O and flush buffers. */
2627         bge_stop(sc);
2628         bge_reset(sc);
2629         bge_chipinit(sc);
2630
2631         /*
2632          * Init the various state machines, ring
2633          * control blocks and firmware.
2634          */
2635         if (bge_blockinit(sc)) {
2636                 printf("bge%d: initialization failure\n", sc->bge_unit);
2637                 splx(s);
2638                 return;
2639         }
2640
2641         ifp = &sc->arpcom.ac_if;
2642
2643         /* Specify MTU. */
2644         CSR_WRITE_4(sc, BGE_RX_MTU, ifp->if_mtu +
2645             ETHER_HDR_LEN + ETHER_CRC_LEN);
2646
2647         /* Load our MAC address. */
2648         m = (u_int16_t *)&sc->arpcom.ac_enaddr[0];
2649         CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0]));
2650         CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2]));
2651
2652         /* Enable or disable promiscuous mode as needed. */
2653         if (ifp->if_flags & IFF_PROMISC) {
2654                 BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
2655         } else {
2656                 BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
2657         }
2658
2659         /* Program multicast filter. */
2660         bge_setmulti(sc);
2661
2662         /* Init RX ring. */
2663         bge_init_rx_ring_std(sc);
2664
2665         /*
2666          * Workaround for a bug in 5705 ASIC rev A0. Poll the NIC's
2667          * memory to insure that the chip has in fact read the first
2668          * entry of the ring.
2669          */
2670         if (sc->bge_chipid == BGE_CHIPID_BCM5705_A0) {
2671                 u_int32_t               v, i;
2672                 for (i = 0; i < 10; i++) {
2673                         DELAY(20);
2674                         v = bge_readmem_ind(sc, BGE_STD_RX_RINGS + 8);
2675                         if (v == (MCLBYTES - ETHER_ALIGN))
2676                                 break;
2677                 }
2678                 if (i == 10)
2679                         printf ("bge%d: 5705 A0 chip failed to load RX ring\n",
2680                             sc->bge_unit);
2681         }
2682
2683         /* Init jumbo RX ring. */
2684         if (ifp->if_mtu > (ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN))
2685                 bge_init_rx_ring_jumbo(sc);
2686
2687         /* Init our RX return ring index */
2688         sc->bge_rx_saved_considx = 0;
2689
2690         /* Init TX ring. */
2691         bge_init_tx_ring(sc);
2692
2693         /* Turn on transmitter */
2694         BGE_SETBIT(sc, BGE_TX_MODE, BGE_TXMODE_ENABLE);
2695
2696         /* Turn on receiver */
2697         BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
2698
2699         /* Tell firmware we're alive. */
2700         BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
2701
2702         /* Enable host interrupts. */
2703         BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA);
2704         BGE_CLRBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
2705         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 0);
2706
2707         bge_ifmedia_upd(ifp);
2708
2709         ifp->if_flags |= IFF_RUNNING;
2710         ifp->if_flags &= ~IFF_OACTIVE;
2711
2712         splx(s);
2713
2714         sc->bge_stat_ch = timeout(bge_tick, sc, hz);
2715
2716         return;
2717 }
2718
2719 /*
2720  * Set media options.
2721  */
2722 static int
2723 bge_ifmedia_upd(ifp)
2724         struct ifnet *ifp;
2725 {
2726         struct bge_softc *sc;
2727         struct mii_data *mii;
2728         struct ifmedia *ifm;
2729
2730         sc = ifp->if_softc;
2731         ifm = &sc->bge_ifmedia;
2732
2733         /* If this is a 1000baseX NIC, enable the TBI port. */
2734         if (sc->bge_tbi) {
2735                 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
2736                         return(EINVAL);
2737                 switch(IFM_SUBTYPE(ifm->ifm_media)) {
2738                 case IFM_AUTO:
2739                         break;
2740                 case IFM_1000_SX:
2741                         if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) {
2742                                 BGE_CLRBIT(sc, BGE_MAC_MODE,
2743                                     BGE_MACMODE_HALF_DUPLEX);
2744                         } else {
2745                                 BGE_SETBIT(sc, BGE_MAC_MODE,
2746                                     BGE_MACMODE_HALF_DUPLEX);
2747                         }
2748                         break;
2749                 default:
2750                         return(EINVAL);
2751                 }
2752                 return(0);
2753         }
2754
2755         mii = device_get_softc(sc->bge_miibus);
2756         sc->bge_link = 0;
2757         if (mii->mii_instance) {
2758                 struct mii_softc *miisc;
2759                 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL;
2760                     miisc = LIST_NEXT(miisc, mii_list))
2761                         mii_phy_reset(miisc);
2762         }
2763         mii_mediachg(mii);
2764
2765         return(0);
2766 }
2767
2768 /*
2769  * Report current media status.
2770  */
2771 static void
2772 bge_ifmedia_sts(ifp, ifmr)
2773         struct ifnet *ifp;
2774         struct ifmediareq *ifmr;
2775 {
2776         struct bge_softc *sc;
2777         struct mii_data *mii;
2778
2779         sc = ifp->if_softc;
2780
2781         if (sc->bge_tbi) {
2782                 ifmr->ifm_status = IFM_AVALID;
2783                 ifmr->ifm_active = IFM_ETHER;
2784                 if (CSR_READ_4(sc, BGE_MAC_STS) &
2785                     BGE_MACSTAT_TBI_PCS_SYNCHED)
2786                         ifmr->ifm_status |= IFM_ACTIVE;
2787                 ifmr->ifm_active |= IFM_1000_SX;
2788                 if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX)
2789                         ifmr->ifm_active |= IFM_HDX;
2790                 else
2791                         ifmr->ifm_active |= IFM_FDX;
2792                 return;
2793         }
2794
2795         mii = device_get_softc(sc->bge_miibus);
2796         mii_pollstat(mii);
2797         ifmr->ifm_active = mii->mii_media_active;
2798         ifmr->ifm_status = mii->mii_media_status;
2799
2800         return;
2801 }
2802
2803 static int
2804 bge_ioctl(ifp, command, data)
2805         struct ifnet *ifp;
2806         u_long command;
2807         caddr_t data;
2808 {
2809         struct bge_softc *sc = ifp->if_softc;
2810         struct ifreq *ifr = (struct ifreq *) data;
2811         int s, mask, error = 0;
2812         struct mii_data *mii;
2813
2814         s = splimp();
2815
2816         switch(command) {
2817         case SIOCSIFADDR:
2818         case SIOCGIFADDR:
2819                 error = ether_ioctl(ifp, command, data);
2820                 break;
2821         case SIOCSIFMTU:
2822                 /* Disallow jumbo frames on 5705. */
2823                 if ((sc->bge_asicrev == BGE_ASICREV_BCM5705 &&
2824                     ifr->ifr_mtu > ETHERMTU) || ifr->ifr_mtu > BGE_JUMBO_MTU)
2825                         error = EINVAL;
2826                 else {
2827                         ifp->if_mtu = ifr->ifr_mtu;
2828                         ifp->if_flags &= ~IFF_RUNNING;
2829                         bge_init(sc);
2830                 }
2831                 break;
2832         case SIOCSIFFLAGS:
2833                 if (ifp->if_flags & IFF_UP) {
2834                         /*
2835                          * If only the state of the PROMISC flag changed,
2836                          * then just use the 'set promisc mode' command
2837                          * instead of reinitializing the entire NIC. Doing
2838                          * a full re-init means reloading the firmware and
2839                          * waiting for it to start up, which may take a
2840                          * second or two.
2841                          */
2842                         if (ifp->if_flags & IFF_RUNNING &&
2843                             ifp->if_flags & IFF_PROMISC &&
2844                             !(sc->bge_if_flags & IFF_PROMISC)) {
2845                                 BGE_SETBIT(sc, BGE_RX_MODE,
2846                                     BGE_RXMODE_RX_PROMISC);
2847                         } else if (ifp->if_flags & IFF_RUNNING &&
2848                             !(ifp->if_flags & IFF_PROMISC) &&
2849                             sc->bge_if_flags & IFF_PROMISC) {
2850                                 BGE_CLRBIT(sc, BGE_RX_MODE,
2851                                     BGE_RXMODE_RX_PROMISC);
2852                         } else
2853                                 bge_init(sc);
2854                 } else {
2855                         if (ifp->if_flags & IFF_RUNNING) {
2856                                 bge_stop(sc);
2857                         }
2858                 }
2859                 sc->bge_if_flags = ifp->if_flags;
2860                 error = 0;
2861                 break;
2862         case SIOCADDMULTI:
2863         case SIOCDELMULTI:
2864                 if (ifp->if_flags & IFF_RUNNING) {
2865                         bge_setmulti(sc);
2866                         error = 0;
2867                 }
2868                 break;
2869         case SIOCSIFMEDIA:
2870         case SIOCGIFMEDIA:
2871                 if (sc->bge_tbi) {
2872                         error = ifmedia_ioctl(ifp, ifr,
2873                             &sc->bge_ifmedia, command);
2874                 } else {
2875                         mii = device_get_softc(sc->bge_miibus);
2876                         error = ifmedia_ioctl(ifp, ifr,
2877                             &mii->mii_media, command);
2878                 }
2879                 break;
2880         case SIOCSIFCAP:
2881                 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
2882                 if (mask & IFCAP_HWCSUM) {
2883                         if (IFCAP_HWCSUM & ifp->if_capenable)
2884                                 ifp->if_capenable &= ~IFCAP_HWCSUM;
2885                         else
2886                                 ifp->if_capenable |= IFCAP_HWCSUM;
2887                 }
2888                 error = 0;
2889                 break;
2890         default:
2891                 error = EINVAL;
2892                 break;
2893         }
2894
2895         (void)splx(s);
2896
2897         return(error);
2898 }
2899
2900 static void
2901 bge_watchdog(ifp)
2902         struct ifnet *ifp;
2903 {
2904         struct bge_softc *sc;
2905
2906         sc = ifp->if_softc;
2907
2908         printf("bge%d: watchdog timeout -- resetting\n", sc->bge_unit);
2909
2910         ifp->if_flags &= ~IFF_RUNNING;
2911         bge_init(sc);
2912
2913         ifp->if_oerrors++;
2914
2915         return;
2916 }
2917
2918 /*
2919  * Stop the adapter and free any mbufs allocated to the
2920  * RX and TX lists.
2921  */
2922 static void
2923 bge_stop(sc)
2924         struct bge_softc *sc;
2925 {
2926         struct ifnet *ifp;
2927         struct ifmedia_entry *ifm;
2928         struct mii_data *mii = NULL;
2929         int mtmp, itmp;
2930
2931         ifp = &sc->arpcom.ac_if;
2932
2933         if (!sc->bge_tbi)
2934                 mii = device_get_softc(sc->bge_miibus);
2935
2936         untimeout(bge_tick, sc, sc->bge_stat_ch);
2937
2938         /*
2939          * Disable all of the receiver blocks
2940          */
2941         BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
2942         BGE_CLRBIT(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
2943         BGE_CLRBIT(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
2944         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
2945                 BGE_CLRBIT(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
2946         BGE_CLRBIT(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE);
2947         BGE_CLRBIT(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
2948         BGE_CLRBIT(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE);
2949
2950         /*
2951          * Disable all of the transmit blocks
2952          */
2953         BGE_CLRBIT(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
2954         BGE_CLRBIT(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
2955         BGE_CLRBIT(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
2956         BGE_CLRBIT(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE);
2957         BGE_CLRBIT(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
2958         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
2959                 BGE_CLRBIT(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
2960         BGE_CLRBIT(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
2961
2962         /*
2963          * Shut down all of the memory managers and related
2964          * state machines.
2965          */
2966         BGE_CLRBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
2967         BGE_CLRBIT(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE);
2968         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
2969                 BGE_CLRBIT(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
2970         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
2971         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
2972         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
2973                 BGE_CLRBIT(sc, BGE_BMAN_MODE, BGE_BMANMODE_ENABLE);
2974                 BGE_CLRBIT(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
2975         }
2976
2977         /* Disable host interrupts. */
2978         BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
2979         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 1);
2980
2981         /*
2982          * Tell firmware we're shutting down.
2983          */
2984         BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
2985
2986         /* Free the RX lists. */
2987         bge_free_rx_ring_std(sc);
2988
2989         /* Free jumbo RX list. */
2990         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
2991                 bge_free_rx_ring_jumbo(sc);
2992
2993         /* Free TX buffers. */
2994         bge_free_tx_ring(sc);
2995
2996         /*
2997          * Isolate/power down the PHY, but leave the media selection
2998          * unchanged so that things will be put back to normal when
2999          * we bring the interface back up.
3000          */
3001         if (!sc->bge_tbi) {
3002                 itmp = ifp->if_flags;
3003                 ifp->if_flags |= IFF_UP;
3004                 ifm = mii->mii_media.ifm_cur;
3005                 mtmp = ifm->ifm_media;
3006                 ifm->ifm_media = IFM_ETHER|IFM_NONE;
3007                 mii_mediachg(mii);
3008                 ifm->ifm_media = mtmp;
3009                 ifp->if_flags = itmp;
3010         }
3011
3012         sc->bge_link = 0;
3013
3014         sc->bge_tx_saved_considx = BGE_TXCONS_UNSET;
3015
3016         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3017
3018         return;
3019 }
3020
3021 /*
3022  * Stop all chip I/O so that the kernel's probe routines don't
3023  * get confused by errant DMAs when rebooting.
3024  */
3025 static void
3026 bge_shutdown(dev)
3027         device_t dev;
3028 {
3029         struct bge_softc *sc;
3030
3031         sc = device_get_softc(dev);
3032
3033         bge_stop(sc);
3034         bge_reset(sc);
3035
3036         return;
3037 }