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 1.14 2004/02/10 21:14:14 hmp 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/pcireg.h>
 114 #include <bus/pci/pcivar.h>
 115
 116 #include "if_bgereg.h"
 117
 118 #define BGE_CSUM_FEATURES       (CSUM_IP | CSUM_TCP | CSUM_UDP)
 119
 120 /* "controller miibus0" required.  See GENERIC if you get errors here. */
 121 #include "miibus_if.h"
 122
 123 /*
 124  * Various supported device vendors/types and their names. Note: the
 125  * spec seems to indicate that the hardware still has Alteon's vendor
 126  * ID burned into it, though it will always be overriden by the vendor
 127  * ID in the EEPROM. Just to be safe, we cover all possibilities.
 128  */
 129 #define BGE_DEVDESC_MAX         64      /* Maximum device description length */
 130
 131 static struct bge_type bge_devs[] = {
 132         { ALT_VENDORID, ALT_DEVICEID_BCM5700,
 133                 "Broadcom BCM5700 Gigabit Ethernet" },
 134         { ALT_VENDORID, ALT_DEVICEID_BCM5701,
 135                 "Broadcom BCM5701 Gigabit Ethernet" },
 136         { BCOM_VENDORID, BCOM_DEVICEID_BCM5700,
 137                 "Broadcom BCM5700 Gigabit Ethernet" },
 138         { BCOM_VENDORID, BCOM_DEVICEID_BCM5701,
 139                 "Broadcom BCM5701 Gigabit Ethernet" },
 140         { BCOM_VENDORID, BCOM_DEVICEID_BCM5702,
 141                 "Broadcom BCM5702 Gigabit Ethernet" },
 142         { BCOM_VENDORID, BCOM_DEVICEID_BCM5702X,
 143                 "Broadcom BCM5702X Gigabit Ethernet" },
 144         { BCOM_VENDORID, BCOM_DEVICEID_BCM5703,
 145                 "Broadcom BCM5703 Gigabit Ethernet" },
 146         { BCOM_VENDORID, BCOM_DEVICEID_BCM5703X,
 147                 "Broadcom BCM5703X Gigabit Ethernet" },
 148         { BCOM_VENDORID, BCOM_DEVICEID_BCM5704C,
 149                 "Broadcom BCM5704C Dual Gigabit Ethernet" },
 150         { BCOM_VENDORID, BCOM_DEVICEID_BCM5704S,
 151                 "Broadcom BCM5704S Dual Gigabit Ethernet" },
 152         { BCOM_VENDORID, BCOM_DEVICEID_BCM5705,
 153                 "Broadcom BCM5705 Gigabit Ethernet" },
 154         { BCOM_VENDORID, BCOM_DEVICEID_BCM5705M,
 155                 "Broadcom BCM5705M Gigabit Ethernet" },
 156         { BCOM_VENDORID, BCOM_DEVICEID_BCM5705M_ALT,
 157                 "Broadcom BCM5705M Gigabit Ethernet" },
 158         { BCOM_VENDORID, BCOM_DEVICEID_BCM5782,
 159                 "Broadcom BCM5782 Gigabit Ethernet" },
 160         { SK_VENDORID, SK_DEVICEID_ALTIMA,
 161                 "SysKonnect Gigabit Ethernet" },
 162         { ALTIMA_VENDORID, ALTIMA_DEVICE_AC1000,
 163                 "Altima AC1000 Gigabit Ethernet" },
 164         { ALTIMA_VENDORID, ALTIMA_DEVICE_AC1002,
 165                 "Altima AC1002 Gigabit Ethernet" },
 166         { ALTIMA_VENDORID, ALTIMA_DEVICE_AC9100,
 167                 "Altima AC9100 Gigabit Ethernet" },
 168         { 0, 0, NULL }
 169 };
 170
 171 static int bge_probe            (device_t);
 172 static int bge_attach           (device_t);
 173 static int bge_detach           (device_t);
 174 static void bge_release_resources
 175                                 (struct bge_softc *);
 176 static void bge_txeof           (struct bge_softc *);
 177 static void bge_rxeof           (struct bge_softc *);
 178
 179 static void bge_tick            (void *);
 180 static void bge_stats_update    (struct bge_softc *);
 181 static void bge_stats_update_regs
 182                                 (struct bge_softc *);
 183 static int bge_encap            (struct bge_softc *, struct mbuf *,
 184                                         u_int32_t *);
 185
 186 static void bge_intr            (void *);
 187 static void bge_start           (struct ifnet *);
 188 static int bge_ioctl            (struct ifnet *, u_long, caddr_t);
 189 static void bge_init            (void *);
 190 static void bge_stop            (struct bge_softc *);
 191 static void bge_watchdog                (struct ifnet *);
 192 static void bge_shutdown                (device_t);
 193 static int bge_ifmedia_upd      (struct ifnet *);
 194 static void bge_ifmedia_sts     (struct ifnet *, struct ifmediareq *);
 195
 196 static u_int8_t bge_eeprom_getbyte      (struct bge_softc *,
 197                                                 int, u_int8_t *);
 198 static int bge_read_eeprom      (struct bge_softc *, caddr_t, int, int);
 199
 200 static u_int32_t bge_crc        (caddr_t);
 201 static void bge_setmulti        (struct bge_softc *);
 202
 203 static void bge_handle_events   (struct bge_softc *);
 204 static int bge_alloc_jumbo_mem  (struct bge_softc *);
 205 static void bge_free_jumbo_mem  (struct bge_softc *);
 206 static void *bge_jalloc         (struct bge_softc *);
 207 static void bge_jfree           (caddr_t, u_int);
 208 static void bge_jref            (caddr_t, u_int);
 209 static int bge_newbuf_std       (struct bge_softc *, int, struct mbuf *);
 210 static int bge_newbuf_jumbo     (struct bge_softc *, int, struct mbuf *);
 211 static int bge_init_rx_ring_std (struct bge_softc *);
 212 static void bge_free_rx_ring_std        (struct bge_softc *);
 213 static int bge_init_rx_ring_jumbo       (struct bge_softc *);
 214 static void bge_free_rx_ring_jumbo      (struct bge_softc *);
 215 static void bge_free_tx_ring    (struct bge_softc *);
 216 static int bge_init_tx_ring     (struct bge_softc *);
 217
 218 static int bge_chipinit         (struct bge_softc *);
 219 static int bge_blockinit        (struct bge_softc *);
 220
 221 #ifdef notdef
 222 static u_int8_t bge_vpd_readbyte (struct bge_softc *, int);
 223 static void bge_vpd_read_res    (struct bge_softc *,
 224                                         struct vpd_res *, int);
 225 static void bge_vpd_read        (struct bge_softc *);
 226 #endif
 227
 228 static u_int32_t bge_readmem_ind
 229                                 (struct bge_softc *, int);
 230 static void bge_writemem_ind    (struct bge_softc *, int, int);
 231 #ifdef notdef
 232 static u_int32_t bge_readreg_ind
 233                                 (struct bge_softc *, int);
 234 #endif
 235 static void bge_writereg_ind    (struct bge_softc *, int, int);
 236
 237 static int bge_miibus_readreg   (device_t, int, int);
 238 static int bge_miibus_writereg  (device_t, int, int, int);
 239 static void bge_miibus_statchg  (device_t);
 240
 241 static void bge_reset           (struct bge_softc *);
 242
 243 static device_method_t bge_methods[] = {
 244         /* Device interface */
 245         DEVMETHOD(device_probe,         bge_probe),
 246         DEVMETHOD(device_attach,        bge_attach),
 247         DEVMETHOD(device_detach,        bge_detach),
 248         DEVMETHOD(device_shutdown,      bge_shutdown),
 249
 250         /* bus interface */
 251         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 252         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
 253
 254         /* MII interface */
 255         DEVMETHOD(miibus_readreg,       bge_miibus_readreg),
 256         DEVMETHOD(miibus_writereg,      bge_miibus_writereg),
 257         DEVMETHOD(miibus_statchg,       bge_miibus_statchg),
 258
 259         { 0, 0 }
 260 };
 261
 262 static driver_t bge_driver = {
 263         "bge",
 264         bge_methods,
 265         sizeof(struct bge_softc)
 266 };
 267
 268 static devclass_t bge_devclass;
 269
 270 DECLARE_DUMMY_MODULE(if_bge);
 271 DRIVER_MODULE(if_bge, pci, bge_driver, bge_devclass, 0, 0);
 272 DRIVER_MODULE(miibus, bge, miibus_driver, miibus_devclass, 0, 0);
 273
 274 static u_int32_t
 275 bge_readmem_ind(sc, off)
 276         struct bge_softc *sc;
 277         int off;
 278 {
 279         device_t dev;
 280
 281         dev = sc->bge_dev;
 282
 283         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 284         return(pci_read_config(dev, BGE_PCI_MEMWIN_DATA, 4));
 285 }
 286
 287 static void
 288 bge_writemem_ind(sc, off, val)
 289         struct bge_softc *sc;
 290         int off, val;
 291 {
 292         device_t dev;
 293
 294         dev = sc->bge_dev;
 295
 296         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 297         pci_write_config(dev, BGE_PCI_MEMWIN_DATA, val, 4);
 298
 299         return;
 300 }
 301
 302 #ifdef notdef
 303 static u_int32_t
 304 bge_readreg_ind(sc, off)
 305         struct bge_softc *sc;
 306         int off;
 307 {
 308         device_t dev;
 309
 310         dev = sc->bge_dev;
 311
 312         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 313         return(pci_read_config(dev, BGE_PCI_REG_DATA, 4));
 314 }
 315 #endif
 316
 317 static void
 318 bge_writereg_ind(sc, off, val)
 319         struct bge_softc *sc;
 320         int off, val;
 321 {
 322         device_t dev;
 323
 324         dev = sc->bge_dev;
 325
 326         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 327         pci_write_config(dev, BGE_PCI_REG_DATA, val, 4);
 328
 329         return;
 330 }
 331
 332 #ifdef notdef
 333 static u_int8_t
 334 bge_vpd_readbyte(sc, addr)
 335         struct bge_softc *sc;
 336         int addr;
 337 {
 338         int i;
 339         device_t dev;
 340         u_int32_t val;
 341
 342         dev = sc->bge_dev;
 343         pci_write_config(dev, BGE_PCI_VPD_ADDR, addr, 2);
 344         for (i = 0; i < BGE_TIMEOUT * 10; i++) {
 345                 DELAY(10);
 346                 if (pci_read_config(dev, BGE_PCI_VPD_ADDR, 2) & BGE_VPD_FLAG)
 347                         break;
 348         }
 349
 350         if (i == BGE_TIMEOUT) {
 351                 printf("bge%d: VPD read timed out\n", sc->bge_unit);
 352                 return(0);
 353         }
 354
 355         val = pci_read_config(dev, BGE_PCI_VPD_DATA, 4);
 356
 357         return((val >> ((addr % 4) * 8)) & 0xFF);
 358 }
 359
 360 static void
 361 bge_vpd_read_res(sc, res, addr)
 362         struct bge_softc *sc;
 363         struct vpd_res *res;
 364         int addr;
 365 {
 366         int i;
 367         u_int8_t *ptr;
 368
 369         ptr = (u_int8_t *)res;
 370         for (i = 0; i < sizeof(struct vpd_res); i++)
 371                 ptr[i] = bge_vpd_readbyte(sc, i + addr);
 372
 373         return;
 374 }
 375
 376 static void
 377 bge_vpd_read(sc)
 378         struct bge_softc *sc;
 379 {
 380         int pos = 0, i;
 381         struct vpd_res res;
 382
 383         if (sc->bge_vpd_prodname != NULL)
 384                 free(sc->bge_vpd_prodname, M_DEVBUF);
 385         if (sc->bge_vpd_readonly != NULL)
 386                 free(sc->bge_vpd_readonly, M_DEVBUF);
 387         sc->bge_vpd_prodname = NULL;
 388         sc->bge_vpd_readonly = NULL;
 389
 390         bge_vpd_read_res(sc, &res, pos);
 391
 392         if (res.vr_id != VPD_RES_ID) {
 393                 printf("bge%d: bad VPD resource id: expected %x got %x\n",
 394                         sc->bge_unit, VPD_RES_ID, res.vr_id);
 395                 return;
 396         }
 397
 398         pos += sizeof(res);
 399         sc->bge_vpd_prodname = malloc(res.vr_len + 1, M_DEVBUF, M_NOWAIT);
 400         for (i = 0; i < res.vr_len; i++)
 401                 sc->bge_vpd_prodname[i] = bge_vpd_readbyte(sc, i + pos);
 402         sc->bge_vpd_prodname[i] = '\0';
 403         pos += i;
 404
 405         bge_vpd_read_res(sc, &res, pos);
 406
 407         if (res.vr_id != VPD_RES_READ) {
 408                 printf("bge%d: bad VPD resource id: expected %x got %x\n",
 409                     sc->bge_unit, VPD_RES_READ, res.vr_id);
 410                 return;
 411         }
 412
 413         pos += sizeof(res);
 414         sc->bge_vpd_readonly = malloc(res.vr_len, M_DEVBUF, M_NOWAIT);
 415         for (i = 0; i < res.vr_len + 1; i++)
 416                 sc->bge_vpd_readonly[i] = bge_vpd_readbyte(sc, i + pos);
 417
 418         return;
 419 }
 420 #endif
 421
 422 /*
 423  * Read a byte of data stored in the EEPROM at address 'addr.' The
 424  * BCM570x supports both the traditional bitbang interface and an
 425  * auto access interface for reading the EEPROM. We use the auto
 426  * access method.
 427  */
 428 static u_int8_t
 429 bge_eeprom_getbyte(sc, addr, dest)
 430         struct bge_softc *sc;
 431         int addr;
 432         u_int8_t *dest;
 433 {
 434         int i;
 435         u_int32_t byte = 0;
 436
 437         /*
 438          * Enable use of auto EEPROM access so we can avoid
 439          * having to use the bitbang method.
 440          */
 441         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM);
 442
 443         /* Reset the EEPROM, load the clock period. */
 444         CSR_WRITE_4(sc, BGE_EE_ADDR,
 445             BGE_EEADDR_RESET|BGE_EEHALFCLK(BGE_HALFCLK_384SCL));
 446         DELAY(20);
 447
 448         /* Issue the read EEPROM command. */
 449         CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr);
 450
 451         /* Wait for completion */
 452         for(i = 0; i < BGE_TIMEOUT * 10; i++) {
 453                 DELAY(10);
 454                 if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE)
 455                         break;
 456         }
 457
 458         if (i == BGE_TIMEOUT) {
 459                 printf("bge%d: eeprom read timed out\n", sc->bge_unit);
 460                 return(0);
 461         }
 462
 463         /* Get result. */
 464         byte = CSR_READ_4(sc, BGE_EE_DATA);
 465
 466         *dest = (byte >> ((addr % 4) * 8)) & 0xFF;
 467
 468         return(0);
 469 }
 470
 471 /*
 472  * Read a sequence of bytes from the EEPROM.
 473  */
 474 static int
 475 bge_read_eeprom(sc, dest, off, cnt)
 476         struct bge_softc *sc;
 477         caddr_t dest;
 478         int off;
 479         int cnt;
 480 {
 481         int err = 0, i;
 482         u_int8_t byte = 0;
 483
 484         for (i = 0; i < cnt; i++) {
 485                 err = bge_eeprom_getbyte(sc, off + i, &byte);
 486                 if (err)
 487                         break;
 488                 *(dest + i) = byte;
 489         }
 490
 491         return(err ? 1 : 0);
 492 }
 493
 494 static int
 495 bge_miibus_readreg(dev, phy, reg)
 496         device_t dev;
 497         int phy, reg;
 498 {
 499         struct bge_softc *sc;
 500         struct ifnet *ifp;
 501         u_int32_t val, autopoll;
 502         int i;
 503
 504         sc = device_get_softc(dev);
 505         ifp = &sc->arpcom.ac_if;
 506
 507         /*
 508          * Broadcom's own driver always assumes the internal
 509          * PHY is at GMII address 1. On some chips, the PHY responds
 510          * to accesses at all addresses, which could cause us to
 511          * bogusly attach the PHY 32 times at probe type. Always
 512          * restricting the lookup to address 1 is simpler than
 513          * trying to figure out which chips revisions should be
 514          * special-cased.
 515          */
 516         if (phy != 1)
 517                 return(0);
 518
 519         /* Reading with autopolling on may trigger PCI errors */
 520         autopoll = CSR_READ_4(sc, BGE_MI_MODE);
 521         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 522                 BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 523                 DELAY(40);
 524         }
 525
 526         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ|BGE_MICOMM_BUSY|
 527             BGE_MIPHY(phy)|BGE_MIREG(reg));
 528
 529         for (i = 0; i < BGE_TIMEOUT; i++) {
 530                 val = CSR_READ_4(sc, BGE_MI_COMM);
 531                 if (!(val & BGE_MICOMM_BUSY))
 532                         break;
 533         }
 534
 535         if (i == BGE_TIMEOUT) {
 536                 printf("bge%d: PHY read timed out\n", sc->bge_unit);
 537                 val = 0;
 538                 goto done;
 539         }
 540
 541         val = CSR_READ_4(sc, BGE_MI_COMM);
 542
 543 done:
 544         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 545                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 546                 DELAY(40);
 547         }
 548
 549         if (val & BGE_MICOMM_READFAIL)
 550                 return(0);
 551
 552         return(val & 0xFFFF);
 553 }
 554
 555 static int
 556 bge_miibus_writereg(dev, phy, reg, val)
 557         device_t dev;
 558         int phy, reg, val;
 559 {
 560         struct bge_softc *sc;
 561         u_int32_t autopoll;
 562         int i;
 563
 564         sc = device_get_softc(dev);
 565
 566         /* Reading with autopolling on may trigger PCI errors */
 567         autopoll = CSR_READ_4(sc, BGE_MI_MODE);
 568         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 569                 BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 570                 DELAY(40);
 571         }
 572
 573         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE|BGE_MICOMM_BUSY|
 574             BGE_MIPHY(phy)|BGE_MIREG(reg)|val);
 575
 576         for (i = 0; i < BGE_TIMEOUT; i++) {
 577                 if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY))
 578                         break;
 579         }
 580
 581         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 582                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 583                 DELAY(40);
 584         }
 585
 586         if (i == BGE_TIMEOUT) {
 587                 printf("bge%d: PHY read timed out\n", sc->bge_unit);
 588                 return(0);
 589         }
 590
 591         return(0);
 592 }
 593
 594 static void
 595 bge_miibus_statchg(dev)
 596         device_t dev;
 597 {
 598         struct bge_softc *sc;
 599         struct mii_data *mii;
 600
 601         sc = device_get_softc(dev);
 602         mii = device_get_softc(sc->bge_miibus);
 603
 604         BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE);
 605         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_TX) {
 606                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII);
 607         } else {
 608                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII);
 609         }
 610
 611         if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
 612                 BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 613         } else {
 614                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 615         }
 616
 617         return;
 618 }
 619
 620 /*
 621  * Handle events that have triggered interrupts.
 622  */
 623 static void
 624 bge_handle_events(sc)
 625         struct bge_softc                *sc;
 626 {
 627
 628         return;
 629 }
 630
 631 /*
 632  * Memory management for jumbo frames.
 633  */
 634
 635 static int
 636 bge_alloc_jumbo_mem(sc)
 637         struct bge_softc                *sc;
 638 {
 639         caddr_t                 ptr;
 640         int             i;
 641         struct bge_jpool_entry   *entry;
 642
 643         /* Grab a big chunk o' storage. */
 644         sc->bge_cdata.bge_jumbo_buf = contigmalloc(BGE_JMEM, M_DEVBUF,
 645                 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0);
 646
 647         if (sc->bge_cdata.bge_jumbo_buf == NULL) {
 648                 printf("bge%d: no memory for jumbo buffers!\n", sc->bge_unit);
 649                 return(ENOBUFS);
 650         }
 651
 652         SLIST_INIT(&sc->bge_jfree_listhead);
 653         SLIST_INIT(&sc->bge_jinuse_listhead);
 654
 655         /*
 656          * Now divide it up into 9K pieces and save the addresses
 657          * in an array. Note that we play an evil trick here by using
 658          * the first few bytes in the buffer to hold the the address
 659          * of the softc structure for this interface. This is because
 660          * bge_jfree() needs it, but it is called by the mbuf management
 661          * code which will not pass it to us explicitly.
 662          */
 663         ptr = sc->bge_cdata.bge_jumbo_buf;
 664         for (i = 0; i < BGE_JSLOTS; i++) {
 665                 u_int64_t               **aptr;
 666                 aptr = (u_int64_t **)ptr;
 667                 aptr[0] = (u_int64_t *)sc;
 668                 ptr += sizeof(u_int64_t);
 669                 sc->bge_cdata.bge_jslots[i].bge_buf = ptr;
 670                 sc->bge_cdata.bge_jslots[i].bge_inuse = 0;
 671                 ptr += (BGE_JLEN - sizeof(u_int64_t));
 672                 entry = malloc(sizeof(struct bge_jpool_entry),
 673                                M_DEVBUF, M_NOWAIT);
 674                 if (entry == NULL) {
 675                         contigfree(sc->bge_cdata.bge_jumbo_buf,
 676                             BGE_JMEM, M_DEVBUF);
 677                         sc->bge_cdata.bge_jumbo_buf = NULL;
 678                         printf("bge%d: no memory for jumbo "
 679                             "buffer queue!\n", sc->bge_unit);
 680                         return(ENOBUFS);
 681                 }
 682                 entry->slot = i;
 683                 SLIST_INSERT_HEAD(&sc->bge_jfree_listhead,
 684                     entry, jpool_entries);
 685         }
 686
 687         return(0);
 688 }
 689
 690 static void
 691 bge_free_jumbo_mem(sc)
 692         struct bge_softc *sc;
 693 {
 694         int i;
 695         struct bge_jpool_entry *entry;
 696
 697         for (i = 0; i < BGE_JSLOTS; i++) {
 698                 entry = SLIST_FIRST(&sc->bge_jfree_listhead);
 699                 SLIST_REMOVE_HEAD(&sc->bge_jfree_listhead, jpool_entries);
 700                 free(entry, M_DEVBUF);
 701         }
 702
 703         contigfree(sc->bge_cdata.bge_jumbo_buf, BGE_JMEM, M_DEVBUF);
 704
 705         return;
 706 }
 707
 708 /*
 709  * Allocate a jumbo buffer.
 710  */
 711 static void *
 712 bge_jalloc(sc)
 713         struct bge_softc                *sc;
 714 {
 715         struct bge_jpool_entry   *entry;
 716
 717         entry = SLIST_FIRST(&sc->bge_jfree_listhead);
 718
 719         if (entry == NULL) {
 720                 printf("bge%d: no free jumbo buffers\n", sc->bge_unit);
 721                 return(NULL);
 722         }
 723
 724         SLIST_REMOVE_HEAD(&sc->bge_jfree_listhead, jpool_entries);
 725         SLIST_INSERT_HEAD(&sc->bge_jinuse_listhead, entry, jpool_entries);
 726         sc->bge_cdata.bge_jslots[entry->slot].bge_inuse = 1;
 727         return(sc->bge_cdata.bge_jslots[entry->slot].bge_buf);
 728 }
 729
 730 /*
 731  * Adjust usage count on a jumbo buffer.
 732  */
 733 static void
 734 bge_jref(buf, size)
 735         caddr_t                 buf;
 736         u_int                   size;
 737 {
 738         struct bge_softc                *sc;
 739         u_int64_t               **aptr;
 740         int             i;
 741
 742         /* Extract the softc struct pointer. */
 743         aptr = (u_int64_t **)(buf - sizeof(u_int64_t));
 744         sc = (struct bge_softc *)(aptr[0]);
 745
 746         if (sc == NULL)
 747                 panic("bge_jref: can't find softc pointer!");
 748
 749         if (size != BGE_JUMBO_FRAMELEN)
 750                 panic("bge_jref: adjusting refcount of buf of wrong size!");
 751
 752         /* calculate the slot this buffer belongs to */
 753
 754         i = ((vm_offset_t)aptr
 755              - (vm_offset_t)sc->bge_cdata.bge_jumbo_buf) / BGE_JLEN;
 756
 757         if ((i < 0) || (i >= BGE_JSLOTS))
 758                 panic("bge_jref: asked to reference buffer "
 759                     "that we don't manage!");
 760         else if (sc->bge_cdata.bge_jslots[i].bge_inuse == 0)
 761                 panic("bge_jref: buffer already free!");
 762         else
 763                 sc->bge_cdata.bge_jslots[i].bge_inuse++;
 764
 765         return;
 766 }
 767
 768 /*
 769  * Release a jumbo buffer.
 770  */
 771 static void
 772 bge_jfree(buf, size)
 773         caddr_t                 buf;
 774         u_int                   size;
 775 {
 776         struct bge_softc                *sc;
 777         u_int64_t               **aptr;
 778         int                     i;
 779         struct bge_jpool_entry   *entry;
 780
 781         /* Extract the softc struct pointer. */
 782         aptr = (u_int64_t **)(buf - sizeof(u_int64_t));
 783         sc = (struct bge_softc *)(aptr[0]);
 784
 785         if (sc == NULL)
 786                 panic("bge_jfree: can't find softc pointer!");
 787
 788         if (size != BGE_JUMBO_FRAMELEN)
 789                 panic("bge_jfree: freeing buffer of wrong size!");
 790
 791         /* calculate the slot this buffer belongs to */
 792
 793         i = ((vm_offset_t)aptr
 794              - (vm_offset_t)sc->bge_cdata.bge_jumbo_buf) / BGE_JLEN;
 795
 796         if ((i < 0) || (i >= BGE_JSLOTS))
 797                 panic("bge_jfree: asked to free buffer that we don't manage!");
 798         else if (sc->bge_cdata.bge_jslots[i].bge_inuse == 0)
 799                 panic("bge_jfree: buffer already free!");
 800         else {
 801                 sc->bge_cdata.bge_jslots[i].bge_inuse--;
 802                 if(sc->bge_cdata.bge_jslots[i].bge_inuse == 0) {
 803                         entry = SLIST_FIRST(&sc->bge_jinuse_listhead);
 804                         if (entry == NULL)
 805                                 panic("bge_jfree: buffer not in use!");
 806                         entry->slot = i;
 807                         SLIST_REMOVE_HEAD(&sc->bge_jinuse_listhead,
 808                                           jpool_entries);
 809                         SLIST_INSERT_HEAD(&sc->bge_jfree_listhead,
 810                                           entry, jpool_entries);
 811                 }
 812         }
 813
 814         return;
 815 }
 816
 817
 818 /*
 819  * Intialize a standard receive ring descriptor.
 820  */
 821 static int
 822 bge_newbuf_std(sc, i, m)
 823         struct bge_softc        *sc;
 824         int                     i;
 825         struct mbuf             *m;
 826 {
 827         struct mbuf             *m_new = NULL;
 828         struct bge_rx_bd        *r;
 829
 830         if (m == NULL) {
 831                 MGETHDR(m_new, M_DONTWAIT, MT_DATA);
 832                 if (m_new == NULL) {
 833                         return(ENOBUFS);
 834                 }
 835
 836                 MCLGET(m_new, M_DONTWAIT);
 837                 if (!(m_new->m_flags & M_EXT)) {
 838                         m_freem(m_new);
 839                         return(ENOBUFS);
 840                 }
 841                 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
 842         } else {
 843                 m_new = m;
 844                 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
 845                 m_new->m_data = m_new->m_ext.ext_buf;
 846         }
 847
 848         if (!sc->bge_rx_alignment_bug)
 849                 m_adj(m_new, ETHER_ALIGN);
 850         sc->bge_cdata.bge_rx_std_chain[i] = m_new;
 851         r = &sc->bge_rdata->bge_rx_std_ring[i];
 852         BGE_HOSTADDR(r->bge_addr, vtophys(mtod(m_new, caddr_t)));
 853         r->bge_flags = BGE_RXBDFLAG_END;
 854         r->bge_len = m_new->m_len;
 855         r->bge_idx = i;
 856
 857         return(0);
 858 }
 859
 860 /*
 861  * Initialize a jumbo receive ring descriptor. This allocates
 862  * a jumbo buffer from the pool managed internally by the driver.
 863  */
 864 static int
 865 bge_newbuf_jumbo(sc, i, m)
 866         struct bge_softc *sc;
 867         int i;
 868         struct mbuf *m;
 869 {
 870         struct mbuf *m_new = NULL;
 871         struct bge_rx_bd *r;
 872
 873         if (m == NULL) {
 874                 caddr_t                 *buf = NULL;
 875
 876                 /* Allocate the mbuf. */
 877                 MGETHDR(m_new, M_DONTWAIT, MT_DATA);
 878                 if (m_new == NULL) {
 879                         return(ENOBUFS);
 880                 }
 881
 882                 /* Allocate the jumbo buffer */
 883                 buf = bge_jalloc(sc);
 884                 if (buf == NULL) {
 885                         m_freem(m_new);
 886                         printf("bge%d: jumbo allocation failed "
 887                             "-- packet dropped!\n", sc->bge_unit);
 888                         return(ENOBUFS);
 889                 }
 890
 891                 /* Attach the buffer to the mbuf. */
 892                 m_new->m_data = m_new->m_ext.ext_buf = (void *)buf;
 893                 m_new->m_flags |= M_EXT;
 894                 m_new->m_len = m_new->m_pkthdr.len =
 895                     m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN;
 896                 m_new->m_ext.ext_free = bge_jfree;
 897                 m_new->m_ext.ext_ref = bge_jref;
 898         } else {
 899                 m_new = m;
 900                 m_new->m_data = m_new->m_ext.ext_buf;
 901                 m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN;
 902         }
 903
 904         if (!sc->bge_rx_alignment_bug)
 905                 m_adj(m_new, ETHER_ALIGN);
 906         /* Set up the descriptor. */
 907         r = &sc->bge_rdata->bge_rx_jumbo_ring[i];
 908         sc->bge_cdata.bge_rx_jumbo_chain[i] = m_new;
 909         BGE_HOSTADDR(r->bge_addr, vtophys(mtod(m_new, caddr_t)));
 910         r->bge_flags = BGE_RXBDFLAG_END|BGE_RXBDFLAG_JUMBO_RING;
 911         r->bge_len = m_new->m_len;
 912         r->bge_idx = i;
 913
 914         return(0);
 915 }
 916
 917 /*
 918  * The standard receive ring has 512 entries in it. At 2K per mbuf cluster,
 919  * that's 1MB or memory, which is a lot. For now, we fill only the first
 920  * 256 ring entries and hope that our CPU is fast enough to keep up with
 921  * the NIC.
 922  */
 923 static int
 924 bge_init_rx_ring_std(sc)
 925         struct bge_softc *sc;
 926 {
 927         int i;
 928
 929         for (i = 0; i < BGE_SSLOTS; i++) {
 930                 if (bge_newbuf_std(sc, i, NULL) == ENOBUFS)
 931                         return(ENOBUFS);
 932         };
 933
 934         sc->bge_std = i - 1;
 935         CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
 936
 937         return(0);
 938 }
 939
 940 static void
 941 bge_free_rx_ring_std(sc)
 942         struct bge_softc *sc;
 943 {
 944         int i;
 945
 946         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
 947                 if (sc->bge_cdata.bge_rx_std_chain[i] != NULL) {
 948                         m_freem(sc->bge_cdata.bge_rx_std_chain[i]);
 949                         sc->bge_cdata.bge_rx_std_chain[i] = NULL;
 950                 }
 951                 bzero((char *)&sc->bge_rdata->bge_rx_std_ring[i],
 952                     sizeof(struct bge_rx_bd));
 953         }
 954
 955         return;
 956 }
 957
 958 static int
 959 bge_init_rx_ring_jumbo(sc)
 960         struct bge_softc *sc;
 961 {
 962         int i;
 963         struct bge_rcb *rcb;
 964
 965         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 966                 if (bge_newbuf_jumbo(sc, i, NULL) == ENOBUFS)
 967                         return(ENOBUFS);
 968         };
 969
 970         sc->bge_jumbo = i - 1;
 971
 972         rcb = &sc->bge_rdata->bge_info.bge_jumbo_rx_rcb;
 973         rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0, 0);
 974         CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
 975
 976         CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
 977
 978         return(0);
 979 }
 980
 981 static void
 982 bge_free_rx_ring_jumbo(sc)
 983         struct bge_softc *sc;
 984 {
 985         int i;
 986
 987         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 988                 if (sc->bge_cdata.bge_rx_jumbo_chain[i] != NULL) {
 989                         m_freem(sc->bge_cdata.bge_rx_jumbo_chain[i]);
 990                         sc->bge_cdata.bge_rx_jumbo_chain[i] = NULL;
 991                 }
 992                 bzero((char *)&sc->bge_rdata->bge_rx_jumbo_ring[i],
 993                     sizeof(struct bge_rx_bd));
 994         }
 995
 996         return;
 997 }
 998
 999 static void
1000 bge_free_tx_ring(sc)
1001         struct bge_softc *sc;
1002 {
1003         int i;
1004
1005         if (sc->bge_rdata->bge_tx_ring == NULL)
1006                 return;
1007
1008         for (i = 0; i < BGE_TX_RING_CNT; i++) {
1009                 if (sc->bge_cdata.bge_tx_chain[i] != NULL) {
1010                         m_freem(sc->bge_cdata.bge_tx_chain[i]);
1011                         sc->bge_cdata.bge_tx_chain[i] = NULL;
1012                 }
1013                 bzero((char *)&sc->bge_rdata->bge_tx_ring[i],
1014                     sizeof(struct bge_tx_bd));
1015         }
1016
1017         return;
1018 }
1019
1020 static int
1021 bge_init_tx_ring(sc)
1022         struct bge_softc *sc;
1023 {
1024         sc->bge_txcnt = 0;
1025         sc->bge_tx_saved_considx = 0;
1026
1027         CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, 0);
1028         /* 5700 b2 errata */
1029         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
1030                 CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, 0);
1031
1032         CSR_WRITE_4(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
1033         /* 5700 b2 errata */
1034         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
1035                 CSR_WRITE_4(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
1036
1037         return(0);
1038 }
1039
1040 #define BGE_POLY        0xEDB88320
1041
1042 static u_int32_t
1043 bge_crc(addr)
1044         caddr_t addr;
1045 {
1046         u_int32_t idx, bit, data, crc;
1047
1048         /* Compute CRC for the address value. */
1049         crc = 0xFFFFFFFF; /* initial value */
1050
1051         for (idx = 0; idx < 6; idx++) {
1052                 for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1)
1053                         crc = (crc >> 1) ^ (((crc ^ data) & 1) ? BGE_POLY : 0);
1054         }
1055
1056         return(crc & 0x7F);
1057 }
1058
1059 static void
1060 bge_setmulti(sc)
1061         struct bge_softc *sc;
1062 {
1063         struct ifnet *ifp;
1064         struct ifmultiaddr *ifma;
1065         u_int32_t hashes[4] = { 0, 0, 0, 0 };
1066         int h, i;
1067
1068         ifp = &sc->arpcom.ac_if;
1069
1070         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
1071                 for (i = 0; i < 4; i++)
1072                         CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0xFFFFFFFF);
1073                 return;
1074         }
1075
1076         /* First, zot all the existing filters. */
1077         for (i = 0; i < 4; i++)
1078                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0);
1079
1080         /* Now program new ones. */
1081         for (ifma = ifp->if_multiaddrs.lh_first;
1082             ifma != NULL; ifma = ifma->ifma_link.le_next) {
1083                 if (ifma->ifma_addr->sa_family != AF_LINK)
1084                         continue;
1085                 h = bge_crc(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
1086                 hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F);
1087         }
1088
1089         for (i = 0; i < 4; i++)
1090                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]);
1091
1092         return;
1093 }
1094
1095 /*
1096  * Do endian, PCI and DMA initialization. Also check the on-board ROM
1097  * self-test results.
1098  */
1099 static int
1100 bge_chipinit(sc)
1101         struct bge_softc *sc;
1102 {
1103         int                     i;
1104         u_int32_t               dma_rw_ctl;
1105
1106         /* Set endianness before we access any non-PCI registers. */
1107 #if BYTE_ORDER == BIG_ENDIAN
1108         pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL,
1109             BGE_BIGENDIAN_INIT, 4);
1110 #else
1111         pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL,
1112             BGE_LITTLEENDIAN_INIT, 4);
1113 #endif
1114
1115         /*
1116          * Check the 'ROM failed' bit on the RX CPU to see if
1117          * self-tests passed.
1118          */
1119         if (CSR_READ_4(sc, BGE_RXCPU_MODE) & BGE_RXCPUMODE_ROMFAIL) {
1120                 printf("bge%d: RX CPU self-diagnostics failed!\n",
1121                     sc->bge_unit);
1122                 return(ENODEV);
1123         }
1124
1125         /* Clear the MAC control register */
1126         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
1127
1128         /*
1129          * Clear the MAC statistics block in the NIC's
1130          * internal memory.
1131          */
1132         for (i = BGE_STATS_BLOCK;
1133             i < BGE_STATS_BLOCK_END + 1; i += sizeof(u_int32_t))
1134                 BGE_MEMWIN_WRITE(sc, i, 0);
1135
1136         for (i = BGE_STATUS_BLOCK;
1137             i < BGE_STATUS_BLOCK_END + 1; i += sizeof(u_int32_t))
1138                 BGE_MEMWIN_WRITE(sc, i, 0);
1139
1140         /* Set up the PCI DMA control register. */
1141         if (pci_read_config(sc->bge_dev, BGE_PCI_PCISTATE, 4) &
1142             BGE_PCISTATE_PCI_BUSMODE) {
1143                 /* Conventional PCI bus */
1144                 dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1145                     (0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1146                     (0x7 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
1147                     (0x0F);
1148         } else {
1149                 /* PCI-X bus */
1150                 /*
1151                  * The 5704 uses a different encoding of read/write
1152                  * watermarks.
1153                  */
1154                 if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
1155                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1156                             (0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1157                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
1158                 else
1159                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1160                             (0x3 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1161                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
1162                             (0x0F);
1163
1164                 /*
1165                  * 5703 and 5704 need ONEDMA_AT_ONCE as a workaround
1166                  * for hardware bugs.
1167                  */
1168                 if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
1169                     sc->bge_asicrev == BGE_ASICREV_BCM5704) {
1170                         u_int32_t tmp;
1171
1172                         tmp = CSR_READ_4(sc, BGE_PCI_CLKCTL) & 0x1f;
1173                         if (tmp == 0x6 || tmp == 0x7)
1174                                 dma_rw_ctl |= BGE_PCIDMARWCTL_ONEDMA_ATONCE;
1175                 }
1176         }
1177
1178         if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
1179             sc->bge_asicrev == BGE_ASICREV_BCM5704 ||
1180             sc->bge_asicrev == BGE_ASICREV_BCM5705)
1181                 dma_rw_ctl &= ~BGE_PCIDMARWCTL_MINDMA;
1182         pci_write_config(sc->bge_dev, BGE_PCI_DMA_RW_CTL, dma_rw_ctl, 4);
1183
1184         /*
1185          * Set up general mode register.
1186          */
1187         CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_MODECTL_WORDSWAP_NONFRAME|
1188             BGE_MODECTL_BYTESWAP_DATA|BGE_MODECTL_WORDSWAP_DATA|
1189             BGE_MODECTL_MAC_ATTN_INTR|BGE_MODECTL_HOST_SEND_BDS|
1190             BGE_MODECTL_TX_NO_PHDR_CSUM|BGE_MODECTL_RX_NO_PHDR_CSUM);
1191
1192         /*
1193          * Disable memory write invalidate.  Apparently it is not supported
1194          * properly by these devices.
1195          */
1196         PCI_CLRBIT(sc->bge_dev, BGE_PCI_CMD, PCIM_CMD_MWIEN, 4);
1197
1198 #ifdef __brokenalpha__
1199         /*
1200          * Must insure that we do not cross an 8K (bytes) boundary
1201          * for DMA reads.  Our highest limit is 1K bytes.  This is a
1202          * restriction on some ALPHA platforms with early revision
1203          * 21174 PCI chipsets, such as the AlphaPC 164lx
1204          */
1205         PCI_SETBIT(sc->bge_dev, BGE_PCI_DMA_RW_CTL,
1206             BGE_PCI_READ_BNDRY_1024BYTES, 4);
1207 #endif
1208
1209         /* Set the timer prescaler (always 66Mhz) */
1210         CSR_WRITE_4(sc, BGE_MISC_CFG, 65 << 1/*BGE_32BITTIME_66MHZ*/);
1211
1212         return(0);
1213 }
1214
1215 static int
1216 bge_blockinit(sc)
1217         struct bge_softc *sc;
1218 {
1219         struct bge_rcb *rcb;
1220         volatile struct bge_rcb *vrcb;
1221         int i;
1222
1223         /*
1224          * Initialize the memory window pointer register so that
1225          * we can access the first 32K of internal NIC RAM. This will
1226          * allow us to set up the TX send ring RCBs and the RX return
1227          * ring RCBs, plus other things which live in NIC memory.
1228          */
1229         CSR_WRITE_4(sc, BGE_PCI_MEMWIN_BASEADDR, 0);
1230
1231         /* Note: the BCM5704 has a smaller mbuf space than other chips. */
1232
1233         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1234                 /* Configure mbuf memory pool */
1235                 if (sc->bge_extram) {
1236                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR,
1237                             BGE_EXT_SSRAM);
1238                         if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
1239                                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000);
1240                         else
1241                                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000);
1242                 } else {
1243                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR,
1244                             BGE_BUFFPOOL_1);
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                 }
1250
1251                 /* Configure DMA resource pool */
1252                 CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_BASEADDR,
1253                     BGE_DMA_DESCRIPTORS);
1254                 CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LEN, 0x2000);
1255         }
1256
1257         /* Configure mbuf pool watermarks */
1258         if (sc->bge_asicrev == BGE_ASICREV_BCM5705) {
1259                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1260                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10);
1261         } else {
1262                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x50);
1263                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x20);
1264         }
1265         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
1266
1267         /* Configure DMA resource watermarks */
1268         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5);
1269         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10);
1270
1271         /* Enable buffer manager */
1272         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1273                 CSR_WRITE_4(sc, BGE_BMAN_MODE,
1274                     BGE_BMANMODE_ENABLE|BGE_BMANMODE_LOMBUF_ATTN);
1275
1276                 /* Poll for buffer manager start indication */
1277                 for (i = 0; i < BGE_TIMEOUT; i++) {
1278                         if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE)
1279                                 break;
1280                         DELAY(10);
1281                 }
1282
1283                 if (i == BGE_TIMEOUT) {
1284                         printf("bge%d: buffer manager failed to start\n",
1285                             sc->bge_unit);
1286                         return(ENXIO);
1287                 }
1288         }
1289
1290         /* Enable flow-through queues */
1291         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
1292         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
1293
1294         /* Wait until queue initialization is complete */
1295         for (i = 0; i < BGE_TIMEOUT; i++) {
1296                 if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0)
1297                         break;
1298                 DELAY(10);
1299         }
1300
1301         if (i == BGE_TIMEOUT) {
1302                 printf("bge%d: flow-through queue init failed\n",
1303                     sc->bge_unit);
1304                 return(ENXIO);
1305         }
1306
1307         /* Initialize the standard RX ring control block */
1308         rcb = &sc->bge_rdata->bge_info.bge_std_rx_rcb;
1309         BGE_HOSTADDR(rcb->bge_hostaddr,
1310             vtophys(&sc->bge_rdata->bge_rx_std_ring));
1311         if (sc->bge_asicrev == BGE_ASICREV_BCM5705)
1312                 rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0);
1313         else
1314                 rcb->bge_maxlen_flags =
1315                     BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN, 0);
1316         if (sc->bge_extram)
1317                 rcb->bge_nicaddr = BGE_EXT_STD_RX_RINGS;
1318         else
1319                 rcb->bge_nicaddr = BGE_STD_RX_RINGS;
1320         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi);
1321         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo);
1322         CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
1323         CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr);
1324
1325         /*
1326          * Initialize the jumbo RX ring control block
1327          * We set the 'ring disabled' bit in the flags
1328          * field until we're actually ready to start
1329          * using this ring (i.e. once we set the MTU
1330          * high enough to require it).
1331          */
1332         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1333                 rcb = &sc->bge_rdata->bge_info.bge_jumbo_rx_rcb;
1334                 BGE_HOSTADDR(rcb->bge_hostaddr,
1335                     vtophys(&sc->bge_rdata->bge_rx_jumbo_ring));
1336                 rcb->bge_maxlen_flags =
1337                     BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN,
1338                     BGE_RCB_FLAG_RING_DISABLED);
1339                 if (sc->bge_extram)
1340                         rcb->bge_nicaddr = BGE_EXT_JUMBO_RX_RINGS;
1341                 else
1342                         rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS;
1343                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI,
1344                     rcb->bge_hostaddr.bge_addr_hi);
1345                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO,
1346                     rcb->bge_hostaddr.bge_addr_lo);
1347                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS,
1348                     rcb->bge_maxlen_flags);
1349                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr);
1350
1351                 /* Set up dummy disabled mini ring RCB */
1352                 rcb = &sc->bge_rdata->bge_info.bge_mini_rx_rcb;
1353                 rcb->bge_maxlen_flags =
1354                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
1355                 CSR_WRITE_4(sc, BGE_RX_MINI_RCB_MAXLEN_FLAGS,
1356                     rcb->bge_maxlen_flags);
1357         }
1358
1359         /*
1360          * Set the BD ring replentish thresholds. The recommended
1361          * values are 1/8th the number of descriptors allocated to
1362          * each ring.
1363          */
1364         CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, BGE_STD_RX_RING_CNT/8);
1365         CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH, BGE_JUMBO_RX_RING_CNT/8);
1366
1367         /*
1368          * Disable all unused send rings by setting the 'ring disabled'
1369          * bit in the flags field of all the TX send ring control blocks.
1370          * These are located in NIC memory.
1371          */
1372         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1373             BGE_SEND_RING_RCB);
1374         for (i = 0; i < BGE_TX_RINGS_EXTSSRAM_MAX; i++) {
1375                 vrcb->bge_maxlen_flags =
1376                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
1377                 vrcb->bge_nicaddr = 0;
1378                 vrcb++;
1379         }
1380
1381         /* Configure TX RCB 0 (we use only the first ring) */
1382         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1383             BGE_SEND_RING_RCB);
1384         vrcb->bge_hostaddr.bge_addr_hi = 0;
1385         BGE_HOSTADDR(vrcb->bge_hostaddr, vtophys(&sc->bge_rdata->bge_tx_ring));
1386         vrcb->bge_nicaddr = BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT);
1387         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1388                 vrcb->bge_maxlen_flags =
1389                     BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0);
1390
1391         /* Disable all unused RX return rings */
1392         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1393             BGE_RX_RETURN_RING_RCB);
1394         for (i = 0; i < BGE_RX_RINGS_MAX; i++) {
1395                 vrcb->bge_hostaddr.bge_addr_hi = 0;
1396                 vrcb->bge_hostaddr.bge_addr_lo = 0;
1397                 vrcb->bge_maxlen_flags =
1398                     BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt,
1399                     BGE_RCB_FLAG_RING_DISABLED);
1400                 vrcb->bge_nicaddr = 0;
1401                 CSR_WRITE_4(sc, BGE_MBX_RX_CONS0_LO +
1402                     (i * (sizeof(u_int64_t))), 0);
1403                 vrcb++;
1404         }
1405
1406         /* Initialize RX ring indexes */
1407         CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, 0);
1408         CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0);
1409         CSR_WRITE_4(sc, BGE_MBX_RX_MINI_PROD_LO, 0);
1410
1411         /*
1412          * Set up RX return ring 0
1413          * Note that the NIC address for RX return rings is 0x00000000.
1414          * The return rings live entirely within the host, so the
1415          * nicaddr field in the RCB isn't used.
1416          */
1417         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1418             BGE_RX_RETURN_RING_RCB);
1419         vrcb->bge_hostaddr.bge_addr_hi = 0;
1420         BGE_HOSTADDR(vrcb->bge_hostaddr,
1421             vtophys(&sc->bge_rdata->bge_rx_return_ring));
1422         vrcb->bge_nicaddr = 0x00000000;
1423         vrcb->bge_maxlen_flags =
1424             BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt, 0);
1425
1426         /* Set random backoff seed for TX */
1427         CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
1428             sc->arpcom.ac_enaddr[0] + sc->arpcom.ac_enaddr[1] +
1429             sc->arpcom.ac_enaddr[2] + sc->arpcom.ac_enaddr[3] +
1430             sc->arpcom.ac_enaddr[4] + sc->arpcom.ac_enaddr[5] +
1431             BGE_TX_BACKOFF_SEED_MASK);
1432
1433         /* Set inter-packet gap */
1434         CSR_WRITE_4(sc, BGE_TX_LENGTHS, 0x2620);
1435
1436         /*
1437          * Specify which ring to use for packets that don't match
1438          * any RX rules.
1439          */
1440         CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08);
1441
1442         /*
1443          * Configure number of RX lists. One interrupt distribution
1444          * list, sixteen active lists, one bad frames class.
1445          */
1446         CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181);
1447
1448         /* Inialize RX list placement stats mask. */
1449         CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF);
1450         CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1);
1451
1452         /* Disable host coalescing until we get it set up */
1453         CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000);
1454
1455         /* Poll to make sure it's shut down. */
1456         for (i = 0; i < BGE_TIMEOUT; i++) {
1457                 if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE))
1458                         break;
1459                 DELAY(10);
1460         }
1461
1462         if (i == BGE_TIMEOUT) {
1463                 printf("bge%d: host coalescing engine failed to idle\n",
1464                     sc->bge_unit);
1465                 return(ENXIO);
1466         }
1467
1468         /* Set up host coalescing defaults */
1469         CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bge_rx_coal_ticks);
1470         CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bge_tx_coal_ticks);
1471         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bge_rx_max_coal_bds);
1472         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bge_tx_max_coal_bds);
1473         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1474                 CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS_INT, 0);
1475                 CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS_INT, 0);
1476         }
1477         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, 0);
1478         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, 0);
1479
1480         /* Set up address of statistics block */
1481         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1482                 CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_HI, 0);
1483                 CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_LO,
1484                     vtophys(&sc->bge_rdata->bge_info.bge_stats));
1485
1486                 CSR_WRITE_4(sc, BGE_HCC_STATS_BASEADDR, BGE_STATS_BLOCK);
1487                 CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_BASEADDR, BGE_STATUS_BLOCK);
1488                 CSR_WRITE_4(sc, BGE_HCC_STATS_TICKS, sc->bge_stat_ticks);
1489         }
1490
1491         /* Set up address of status block */
1492         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI, 0);
1493         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO,
1494             vtophys(&sc->bge_rdata->bge_status_block));
1495
1496         sc->bge_rdata->bge_status_block.bge_idx[0].bge_rx_prod_idx = 0;
1497         sc->bge_rdata->bge_status_block.bge_idx[0].bge_tx_cons_idx = 0;
1498
1499         /* Turn on host coalescing state machine */
1500         CSR_WRITE_4(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
1501
1502         /* Turn on RX BD completion state machine and enable attentions */
1503         CSR_WRITE_4(sc, BGE_RBDC_MODE,
1504             BGE_RBDCMODE_ENABLE|BGE_RBDCMODE_ATTN);
1505
1506         /* Turn on RX list placement state machine */
1507         CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
1508
1509         /* Turn on RX list selector state machine. */
1510         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1511                 CSR_WRITE_4(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
1512
1513         /* Turn on DMA, clear stats */
1514         CSR_WRITE_4(sc, BGE_MAC_MODE, BGE_MACMODE_TXDMA_ENB|
1515             BGE_MACMODE_RXDMA_ENB|BGE_MACMODE_RX_STATS_CLEAR|
1516             BGE_MACMODE_TX_STATS_CLEAR|BGE_MACMODE_RX_STATS_ENB|
1517             BGE_MACMODE_TX_STATS_ENB|BGE_MACMODE_FRMHDR_DMA_ENB|
1518             (sc->bge_tbi ? BGE_PORTMODE_TBI : BGE_PORTMODE_MII));
1519
1520         /* Set misc. local control, enable interrupts on attentions */
1521         CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_ONATTN);
1522
1523 #ifdef notdef
1524         /* Assert GPIO pins for PHY reset */
1525         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0|
1526             BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUT2);
1527         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0|
1528             BGE_MLC_MISCIO_OUTEN1|BGE_MLC_MISCIO_OUTEN2);
1529 #endif
1530
1531         /* Turn on DMA completion state machine */
1532         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1533                 CSR_WRITE_4(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
1534
1535         /* Turn on write DMA state machine */
1536         CSR_WRITE_4(sc, BGE_WDMA_MODE,
1537             BGE_WDMAMODE_ENABLE|BGE_WDMAMODE_ALL_ATTNS);
1538
1539         /* Turn on read DMA state machine */
1540         CSR_WRITE_4(sc, BGE_RDMA_MODE,
1541             BGE_RDMAMODE_ENABLE|BGE_RDMAMODE_ALL_ATTNS);
1542
1543         /* Turn on RX data completion state machine */
1544         CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
1545
1546         /* Turn on RX BD initiator state machine */
1547         CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
1548
1549         /* Turn on RX data and RX BD initiator state machine */
1550         CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE);
1551
1552         /* Turn on Mbuf cluster free state machine */
1553         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1554                 CSR_WRITE_4(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
1555
1556         /* Turn on send BD completion state machine */
1557         CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
1558
1559         /* Turn on send data completion state machine */
1560         CSR_WRITE_4(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
1561
1562         /* Turn on send data initiator state machine */
1563         CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
1564
1565         /* Turn on send BD initiator state machine */
1566         CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
1567
1568         /* Turn on send BD selector state machine */
1569         CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
1570
1571         CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF);
1572         CSR_WRITE_4(sc, BGE_SDI_STATS_CTL,
1573             BGE_SDISTATSCTL_ENABLE|BGE_SDISTATSCTL_FASTER);
1574
1575         /* ack/clear link change events */
1576         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1577             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1578             BGE_MACSTAT_LINK_CHANGED);
1579
1580         /* Enable PHY auto polling (for MII/GMII only) */
1581         if (sc->bge_tbi) {
1582                 CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK);
1583         } else {
1584                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL|10<<16);
1585                 if (sc->bge_asicrev == BGE_ASICREV_BCM5700)
1586                         CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
1587                             BGE_EVTENB_MI_INTERRUPT);
1588         }
1589
1590         /* Enable link state change attentions. */
1591         BGE_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED);
1592
1593         return(0);
1594 }
1595
1596 /*
1597  * Probe for a Broadcom chip. Check the PCI vendor and device IDs
1598  * against our list and return its name if we find a match. Note
1599  * that since the Broadcom controller contains VPD support, we
1600  * can get the device name string from the controller itself instead
1601  * of the compiled-in string. This is a little slow, but it guarantees
1602  * we'll always announce the right product name.
1603  */
1604 static int
1605 bge_probe(dev)
1606         device_t dev;
1607 {
1608         struct bge_type *t;
1609         struct bge_softc *sc;
1610         char *descbuf;
1611
1612         t = bge_devs;
1613
1614         sc = device_get_softc(dev);
1615         bzero(sc, sizeof(struct bge_softc));
1616         sc->bge_unit = device_get_unit(dev);
1617         sc->bge_dev = dev;
1618
1619         while(t->bge_name != NULL) {
1620                 if ((pci_get_vendor(dev) == t->bge_vid) &&
1621                     (pci_get_device(dev) == t->bge_did)) {
1622 #ifdef notdef
1623                         bge_vpd_read(sc);
1624                         device_set_desc(dev, sc->bge_vpd_prodname);
1625 #endif
1626                         descbuf = malloc(BGE_DEVDESC_MAX, M_TEMP, M_NOWAIT);
1627                         if (descbuf == NULL)
1628                                 return(ENOMEM);
1629                         snprintf(descbuf, BGE_DEVDESC_MAX,
1630                             "%s, ASIC rev. %#04x", t->bge_name,
1631                             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) >> 16);
1632                         device_set_desc_copy(dev, descbuf);
1633                         if (pci_get_subvendor(dev) == DELL_VENDORID)
1634                                 sc->bge_no_3_led = 1;
1635                         free(descbuf, M_TEMP);
1636                         return(0);
1637                 }
1638                 t++;
1639         }
1640
1641         return(ENXIO);
1642 }
1643
1644 static int
1645 bge_attach(dev)
1646         device_t dev;
1647 {
1648         int s;
1649         u_int32_t command;
1650         struct ifnet *ifp;
1651         struct bge_softc *sc;
1652         u_int32_t hwcfg = 0;
1653         u_int32_t mac_addr = 0;
1654         int unit, error = 0, rid;
1655
1656         s = splimp();
1657
1658         sc = device_get_softc(dev);
1659         unit = device_get_unit(dev);
1660         sc->bge_dev = dev;
1661         sc->bge_unit = unit;
1662
1663         /*
1664          * Map control/status registers.
1665          */
1666         command = pci_read_config(dev, PCIR_COMMAND, 4);
1667         command |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
1668         pci_write_config(dev, PCIR_COMMAND, command, 4);
1669         command = pci_read_config(dev, PCIR_COMMAND, 4);
1670
1671         if (!(command & PCIM_CMD_MEMEN)) {
1672                 printf("bge%d: failed to enable memory mapping!\n", unit);
1673                 error = ENXIO;
1674                 goto fail;
1675         }
1676
1677         rid = BGE_PCI_BAR0;
1678         sc->bge_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
1679             0, ~0, 1, RF_ACTIVE);
1680
1681         if (sc->bge_res == NULL) {
1682                 printf ("bge%d: couldn't map memory\n", unit);
1683                 error = ENXIO;
1684                 goto fail;
1685         }
1686
1687         sc->bge_btag = rman_get_bustag(sc->bge_res);
1688         sc->bge_bhandle = rman_get_bushandle(sc->bge_res);
1689         sc->bge_vhandle = (vm_offset_t)rman_get_virtual(sc->bge_res);
1690
1691         /*
1692          * XXX FIXME: rman_get_virtual() on the alpha is currently
1693          * broken and returns a physical address instead of a kernel
1694          * virtual address. Consequently, we need to do a little
1695          * extra mangling of the vhandle on the alpha. This should
1696          * eventually be fixed! The whole idea here is to get rid
1697          * of platform dependencies.
1698          */
1699 #ifdef __alpha__
1700         if (pci_cvt_to_bwx(sc->bge_vhandle))
1701                 sc->bge_vhandle = pci_cvt_to_bwx(sc->bge_vhandle);
1702         else
1703                 sc->bge_vhandle = pci_cvt_to_dense(sc->bge_vhandle);
1704         sc->bge_vhandle = ALPHA_PHYS_TO_K0SEG(sc->bge_vhandle);
1705 #endif
1706
1707         /* Allocate interrupt */
1708         rid = 0;
1709
1710         sc->bge_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
1711             RF_SHAREABLE | RF_ACTIVE);
1712
1713         if (sc->bge_irq == NULL) {
1714                 printf("bge%d: couldn't map interrupt\n", unit);
1715                 error = ENXIO;
1716                 goto fail;
1717         }
1718
1719         error = bus_setup_intr(dev, sc->bge_irq, INTR_TYPE_NET,
1720            bge_intr, sc, &sc->bge_intrhand);
1721
1722         if (error) {
1723                 bge_release_resources(sc);
1724                 printf("bge%d: couldn't set up irq\n", unit);
1725                 goto fail;
1726         }
1727
1728         sc->bge_unit = unit;
1729
1730         /* Try to reset the chip. */
1731         bge_reset(sc);
1732
1733         if (bge_chipinit(sc)) {
1734                 printf("bge%d: chip initialization failed\n", sc->bge_unit);
1735                 bge_release_resources(sc);
1736                 error = ENXIO;
1737                 goto fail;
1738         }
1739
1740         /*
1741          * Get station address from the EEPROM.
1742          */
1743         mac_addr = bge_readmem_ind(sc, 0x0c14);
1744         if ((mac_addr >> 16) == 0x484b) {
1745                 sc->arpcom.ac_enaddr[0] = (u_char)(mac_addr >> 8);
1746                 sc->arpcom.ac_enaddr[1] = (u_char)mac_addr;
1747                 mac_addr = bge_readmem_ind(sc, 0x0c18);
1748                 sc->arpcom.ac_enaddr[2] = (u_char)(mac_addr >> 24);
1749                 sc->arpcom.ac_enaddr[3] = (u_char)(mac_addr >> 16);
1750                 sc->arpcom.ac_enaddr[4] = (u_char)(mac_addr >> 8);
1751                 sc->arpcom.ac_enaddr[5] = (u_char)mac_addr;
1752         } else if (bge_read_eeprom(sc, (caddr_t)&sc->arpcom.ac_enaddr,
1753             BGE_EE_MAC_OFFSET + 2, ETHER_ADDR_LEN)) {
1754                 printf("bge%d: failed to read station address\n", unit);
1755                 bge_release_resources(sc);
1756                 error = ENXIO;
1757                 goto fail;
1758         }
1759
1760         /*
1761          * A Broadcom chip was detected. Inform the world.
1762          */
1763         printf("bge%d: Ethernet address: %6D\n", unit,
1764             sc->arpcom.ac_enaddr, ":");
1765
1766         /* Allocate the general information block and ring buffers. */
1767         sc->bge_rdata = contigmalloc(sizeof(struct bge_ring_data), M_DEVBUF,
1768             M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0);
1769
1770         if (sc->bge_rdata == NULL) {
1771                 bge_release_resources(sc);
1772                 error = ENXIO;
1773                 printf("bge%d: no memory for list buffers!\n", sc->bge_unit);
1774                 goto fail;
1775         }
1776
1777         bzero(sc->bge_rdata, sizeof(struct bge_ring_data));
1778
1779         /* Save ASIC rev. */
1780
1781         sc->bge_chipid =
1782             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) &
1783             BGE_PCIMISCCTL_ASICREV;
1784         sc->bge_asicrev = BGE_ASICREV(sc->bge_chipid);
1785         sc->bge_chiprev = BGE_CHIPREV(sc->bge_chipid);
1786
1787         /*
1788          * Try to allocate memory for jumbo buffers.
1789          * The 5705 does not appear to support jumbo frames.
1790          */
1791         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
1792                 if (bge_alloc_jumbo_mem(sc)) {
1793                         printf("bge%d: jumbo buffer allocation "
1794                             "failed\n", sc->bge_unit);
1795                         bge_release_resources(sc);
1796                         error = ENXIO;
1797                         goto fail;
1798                 }
1799         }
1800
1801         /* Set default tuneable values. */
1802         sc->bge_stat_ticks = BGE_TICKS_PER_SEC;
1803         sc->bge_rx_coal_ticks = 150;
1804         sc->bge_tx_coal_ticks = 150;
1805         sc->bge_rx_max_coal_bds = 64;
1806         sc->bge_tx_max_coal_bds = 128;
1807
1808         /* 5705 limits RX return ring to 512 entries. */
1809         if (sc->bge_asicrev == BGE_ASICREV_BCM5705)
1810                 sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT_5705;
1811         else
1812                 sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT;
1813
1814         /* Set up ifnet structure */
1815         ifp = &sc->arpcom.ac_if;
1816         ifp->if_softc = sc;
1817         if_initname(ifp, "bge", sc->bge_unit);
1818         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1819         ifp->if_ioctl = bge_ioctl;
1820         ifp->if_output = ether_output;
1821         ifp->if_start = bge_start;
1822         ifp->if_watchdog = bge_watchdog;
1823         ifp->if_init = bge_init;
1824         ifp->if_mtu = ETHERMTU;
1825         ifp->if_snd.ifq_maxlen = BGE_TX_RING_CNT - 1;
1826         ifp->if_hwassist = BGE_CSUM_FEATURES;
1827         ifp->if_capabilities = IFCAP_HWCSUM;
1828         ifp->if_capenable = ifp->if_capabilities;
1829
1830         /*
1831          * Figure out what sort of media we have by checking the
1832          * hardware config word in the first 32k of NIC internal memory,
1833          * or fall back to examining the EEPROM if necessary.
1834          * Note: on some BCM5700 cards, this value appears to be unset.
1835          * If that's the case, we have to rely on identifying the NIC
1836          * by its PCI subsystem ID, as we do below for the SysKonnect
1837          * SK-9D41.
1838          */
1839         if (bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER)
1840                 hwcfg = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG);
1841         else {
1842                 bge_read_eeprom(sc, (caddr_t)&hwcfg,
1843                                 BGE_EE_HWCFG_OFFSET, sizeof(hwcfg));
1844                 hwcfg = ntohl(hwcfg);
1845         }
1846
1847         if ((hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER)
1848                 sc->bge_tbi = 1;
1849
1850         /* The SysKonnect SK-9D41 is a 1000baseSX card. */
1851         if ((pci_read_config(dev, BGE_PCI_SUBSYS, 4) >> 16) == SK_SUBSYSID_9D41)
1852                 sc->bge_tbi = 1;
1853
1854         if (sc->bge_tbi) {
1855                 ifmedia_init(&sc->bge_ifmedia, IFM_IMASK,
1856                     bge_ifmedia_upd, bge_ifmedia_sts);
1857                 ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_1000_SX, 0, NULL);
1858                 ifmedia_add(&sc->bge_ifmedia,
1859                     IFM_ETHER|IFM_1000_SX|IFM_FDX, 0, NULL);
1860                 ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
1861                 ifmedia_set(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO);
1862         } else {
1863                 /*
1864                  * Do transceiver setup.
1865                  */
1866                 if (mii_phy_probe(dev, &sc->bge_miibus,
1867                     bge_ifmedia_upd, bge_ifmedia_sts)) {
1868                         printf("bge%d: MII without any PHY!\n", sc->bge_unit);
1869                         bge_release_resources(sc);
1870                         bge_free_jumbo_mem(sc);
1871                         error = ENXIO;
1872                         goto fail;
1873                 }
1874         }
1875
1876         /*
1877          * When using the BCM5701 in PCI-X mode, data corruption has
1878          * been observed in the first few bytes of some received packets.
1879          * Aligning the packet buffer in memory eliminates the corruption.
1880          * Unfortunately, this misaligns the packet payloads.  On platforms
1881          * which do not support unaligned accesses, we will realign the
1882          * payloads by copying the received packets.
1883          */
1884         switch (sc->bge_chipid) {
1885         case BGE_CHIPID_BCM5701_A0:
1886         case BGE_CHIPID_BCM5701_B0:
1887         case BGE_CHIPID_BCM5701_B2:
1888         case BGE_CHIPID_BCM5701_B5:
1889                 /* If in PCI-X mode, work around the alignment bug. */
1890                 if ((pci_read_config(dev, BGE_PCI_PCISTATE, 4) &
1891                     (BGE_PCISTATE_PCI_BUSMODE | BGE_PCISTATE_PCI_BUSSPEED)) ==
1892                     BGE_PCISTATE_PCI_BUSSPEED)
1893                         sc->bge_rx_alignment_bug = 1;
1894                 break;
1895         }
1896
1897         /*
1898          * Call MI attach routine.
1899          */
1900         ether_ifattach(ifp, ETHER_BPF_SUPPORTED);
1901         callout_handle_init(&sc->bge_stat_ch);
1902
1903 fail:
1904         splx(s);
1905
1906         return(error);
1907 }
1908
1909 static int
1910 bge_detach(dev)
1911         device_t dev;
1912 {
1913         struct bge_softc *sc;
1914         struct ifnet *ifp;
1915         int s;
1916
1917         s = splimp();
1918
1919         sc = device_get_softc(dev);
1920         ifp = &sc->arpcom.ac_if;
1921
1922         ether_ifdetach(ifp, ETHER_BPF_SUPPORTED);
1923         bge_stop(sc);
1924         bge_reset(sc);
1925
1926         if (sc->bge_tbi) {
1927                 ifmedia_removeall(&sc->bge_ifmedia);
1928         } else {
1929                 bus_generic_detach(dev);
1930                 device_delete_child(dev, sc->bge_miibus);
1931         }
1932
1933         bge_release_resources(sc);
1934         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1935                 bge_free_jumbo_mem(sc);
1936
1937         splx(s);
1938
1939         return(0);
1940 }
1941
1942 static void
1943 bge_release_resources(sc)
1944         struct bge_softc *sc;
1945 {
1946         device_t dev;
1947
1948         dev = sc->bge_dev;
1949
1950         if (sc->bge_vpd_prodname != NULL)
1951                 free(sc->bge_vpd_prodname, M_DEVBUF);
1952
1953         if (sc->bge_vpd_readonly != NULL)
1954                 free(sc->bge_vpd_readonly, M_DEVBUF);
1955
1956         if (sc->bge_intrhand != NULL)
1957                 bus_teardown_intr(dev, sc->bge_irq, sc->bge_intrhand);
1958
1959         if (sc->bge_irq != NULL)
1960                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->bge_irq);
1961
1962         if (sc->bge_res != NULL)
1963                 bus_release_resource(dev, SYS_RES_MEMORY,
1964                     BGE_PCI_BAR0, sc->bge_res);
1965
1966         if (sc->bge_rdata != NULL)
1967                 contigfree(sc->bge_rdata,
1968                     sizeof(struct bge_ring_data), M_DEVBUF);
1969
1970         return;
1971 }
1972
1973 static void
1974 bge_reset(sc)
1975         struct bge_softc *sc;
1976 {
1977         device_t dev;
1978         u_int32_t cachesize, command, pcistate;
1979         int i, val = 0;
1980
1981         dev = sc->bge_dev;
1982
1983         /* Save some important PCI state. */
1984         cachesize = pci_read_config(dev, BGE_PCI_CACHESZ, 4);
1985         command = pci_read_config(dev, BGE_PCI_CMD, 4);
1986         pcistate = pci_read_config(dev, BGE_PCI_PCISTATE, 4);
1987
1988         pci_write_config(dev, BGE_PCI_MISC_CTL,
1989             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
1990             BGE_PCIMISCCTL_ENDIAN_WORDSWAP|BGE_PCIMISCCTL_PCISTATE_RW, 4);
1991
1992         /* Issue global reset */
1993         bge_writereg_ind(sc, BGE_MISC_CFG,
1994             BGE_MISCCFG_RESET_CORE_CLOCKS|(65<<1));
1995
1996         DELAY(1000);
1997
1998         /* Reset some of the PCI state that got zapped by reset */
1999         pci_write_config(dev, BGE_PCI_MISC_CTL,
2000             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2001             BGE_PCIMISCCTL_ENDIAN_WORDSWAP|BGE_PCIMISCCTL_PCISTATE_RW, 4);
2002         pci_write_config(dev, BGE_PCI_CACHESZ, cachesize, 4);
2003         pci_write_config(dev, BGE_PCI_CMD, command, 4);
2004         bge_writereg_ind(sc, BGE_MISC_CFG, (65 << 1));
2005
2006         /*
2007          * Prevent PXE restart: write a magic number to the
2008          * general communications memory at 0xB50.
2009          */
2010         bge_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER);
2011         /*
2012          * Poll the value location we just wrote until
2013          * we see the 1's complement of the magic number.
2014          * This indicates that the firmware initialization
2015          * is complete.
2016          */
2017         for (i = 0; i < BGE_TIMEOUT; i++) {
2018                 val = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM);
2019                 if (val == ~BGE_MAGIC_NUMBER)
2020                         break;
2021                 DELAY(10);
2022         }
2023
2024         if (i == BGE_TIMEOUT) {
2025                 printf("bge%d: firmware handshake timed out\n", sc->bge_unit);
2026                 return;
2027         }
2028
2029         /*
2030          * XXX Wait for the value of the PCISTATE register to
2031          * return to its original pre-reset state. This is a
2032          * fairly good indicator of reset completion. If we don't
2033          * wait for the reset to fully complete, trying to read
2034          * from the device's non-PCI registers may yield garbage
2035          * results.
2036          */
2037         for (i = 0; i < BGE_TIMEOUT; i++) {
2038                 if (pci_read_config(dev, BGE_PCI_PCISTATE, 4) == pcistate)
2039                         break;
2040                 DELAY(10);
2041         }
2042
2043         /* Enable memory arbiter. */
2044         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
2045                 CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
2046
2047         /* Fix up byte swapping */
2048         CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_MODECTL_BYTESWAP_NONFRAME|
2049             BGE_MODECTL_BYTESWAP_DATA);
2050
2051         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
2052
2053         DELAY(10000);
2054
2055         return;
2056 }
2057
2058 /*
2059  * Frame reception handling. This is called if there's a frame
2060  * on the receive return list.
2061  *
2062  * Note: we have to be able to handle two possibilities here:
2063  * 1) the frame is from the jumbo recieve ring
2064  * 2) the frame is from the standard receive ring
2065  */
2066
2067 static void
2068 bge_rxeof(sc)
2069         struct bge_softc *sc;
2070 {
2071         struct ifnet *ifp;
2072         int stdcnt = 0, jumbocnt = 0;
2073
2074         ifp = &sc->arpcom.ac_if;
2075
2076         while(sc->bge_rx_saved_considx !=
2077             sc->bge_rdata->bge_status_block.bge_idx[0].bge_rx_prod_idx) {
2078                 struct bge_rx_bd        *cur_rx;
2079                 u_int32_t               rxidx;
2080                 struct ether_header     *eh;
2081                 struct mbuf             *m = NULL;
2082                 u_int16_t               vlan_tag = 0;
2083                 int                     have_tag = 0;
2084
2085                 cur_rx =
2086             &sc->bge_rdata->bge_rx_return_ring[sc->bge_rx_saved_considx];
2087
2088                 rxidx = cur_rx->bge_idx;
2089                 BGE_INC(sc->bge_rx_saved_considx, sc->bge_return_ring_cnt);
2090
2091                 if (cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) {
2092                         have_tag = 1;
2093                         vlan_tag = cur_rx->bge_vlan_tag;
2094                 }
2095
2096                 if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) {
2097                         BGE_INC(sc->bge_jumbo, BGE_JUMBO_RX_RING_CNT);
2098                         m = sc->bge_cdata.bge_rx_jumbo_chain[rxidx];
2099                         sc->bge_cdata.bge_rx_jumbo_chain[rxidx] = NULL;
2100                         jumbocnt++;
2101                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2102                                 ifp->if_ierrors++;
2103                                 bge_newbuf_jumbo(sc, sc->bge_jumbo, m);
2104                                 continue;
2105                         }
2106                         if (bge_newbuf_jumbo(sc,
2107                             sc->bge_jumbo, NULL) == ENOBUFS) {
2108                                 ifp->if_ierrors++;
2109                                 bge_newbuf_jumbo(sc, sc->bge_jumbo, m);
2110                                 continue;
2111                         }
2112                 } else {
2113                         BGE_INC(sc->bge_std, BGE_STD_RX_RING_CNT);
2114                         m = sc->bge_cdata.bge_rx_std_chain[rxidx];
2115                         sc->bge_cdata.bge_rx_std_chain[rxidx] = NULL;
2116                         stdcnt++;
2117                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2118                                 ifp->if_ierrors++;
2119                                 bge_newbuf_std(sc, sc->bge_std, m);
2120                                 continue;
2121                         }
2122                         if (bge_newbuf_std(sc, sc->bge_std,
2123                             NULL) == ENOBUFS) {
2124                                 ifp->if_ierrors++;
2125                                 bge_newbuf_std(sc, sc->bge_std, m);
2126                                 continue;
2127                         }
2128                 }
2129
2130                 ifp->if_ipackets++;
2131 #ifndef __i386__
2132                 /*
2133                  * The i386 allows unaligned accesses, but for other
2134                  * platforms we must make sure the payload is aligned.
2135                  */
2136                 if (sc->bge_rx_alignment_bug) {
2137                         bcopy(m->m_data, m->m_data + ETHER_ALIGN,
2138                             cur_rx->bge_len);
2139                         m->m_data += ETHER_ALIGN;
2140                 }
2141 #endif
2142                 eh = mtod(m, struct ether_header *);
2143                 m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN;
2144                 m->m_pkthdr.rcvif = ifp;
2145
2146                 /* Remove header from mbuf and pass it on. */
2147                 m_adj(m, sizeof(struct ether_header));
2148
2149 #if 0 /* currently broken for some packets, possibly related to TCP options */
2150                 if (ifp->if_hwassist) {
2151                         m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
2152                         if ((cur_rx->bge_ip_csum ^ 0xffff) == 0)
2153                                 m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
2154                         if (cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM) {
2155                                 m->m_pkthdr.csum_data =
2156                                     cur_rx->bge_tcp_udp_csum;
2157                                 m->m_pkthdr.csum_flags |= CSUM_DATA_VALID;
2158                         }
2159                 }
2160 #endif
2161
2162                 /*
2163                  * If we received a packet with a vlan tag, pass it
2164                  * to vlan_input() instead of ether_input().
2165                  */
2166                 if (have_tag) {
2167                         VLAN_INPUT_TAG(eh, m, vlan_tag);
2168                         have_tag = vlan_tag = 0;
2169                         continue;
2170                 }
2171
2172                 ether_input(ifp, eh, m);
2173         }
2174
2175         CSR_WRITE_4(sc, BGE_MBX_RX_CONS0_LO, sc->bge_rx_saved_considx);
2176         if (stdcnt)
2177                 CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
2178         if (jumbocnt)
2179                 CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
2180
2181         return;
2182 }
2183
2184 static void
2185 bge_txeof(sc)
2186         struct bge_softc *sc;
2187 {
2188         struct bge_tx_bd *cur_tx = NULL;
2189         struct ifnet *ifp;
2190
2191         ifp = &sc->arpcom.ac_if;
2192
2193         /*
2194          * Go through our tx ring and free mbufs for those
2195          * frames that have been sent.
2196          */
2197         while (sc->bge_tx_saved_considx !=
2198             sc->bge_rdata->bge_status_block.bge_idx[0].bge_tx_cons_idx) {
2199                 u_int32_t               idx = 0;
2200
2201                 idx = sc->bge_tx_saved_considx;
2202                 cur_tx = &sc->bge_rdata->bge_tx_ring[idx];
2203                 if (cur_tx->bge_flags & BGE_TXBDFLAG_END)
2204                         ifp->if_opackets++;
2205                 if (sc->bge_cdata.bge_tx_chain[idx] != NULL) {
2206                         m_freem(sc->bge_cdata.bge_tx_chain[idx]);
2207                         sc->bge_cdata.bge_tx_chain[idx] = NULL;
2208                 }
2209                 sc->bge_txcnt--;
2210                 BGE_INC(sc->bge_tx_saved_considx, BGE_TX_RING_CNT);
2211                 ifp->if_timer = 0;
2212         }
2213
2214         if (cur_tx != NULL)
2215                 ifp->if_flags &= ~IFF_OACTIVE;
2216
2217         return;
2218 }
2219
2220 static void
2221 bge_intr(xsc)
2222         void *xsc;
2223 {
2224         struct bge_softc *sc;
2225         struct ifnet *ifp;
2226         u_int32_t status;
2227
2228         sc = xsc;
2229         ifp = &sc->arpcom.ac_if;
2230
2231 #ifdef notdef
2232         /* Avoid this for now -- checking this register is expensive. */
2233         /* Make sure this is really our interrupt. */
2234         if (!(CSR_READ_4(sc, BGE_MISC_LOCAL_CTL) & BGE_MLC_INTR_STATE))
2235                 return;
2236 #endif
2237         /* Ack interrupt and stop others from occuring. */
2238         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 1);
2239
2240         /*
2241          * Process link state changes.
2242          * Grrr. The link status word in the status block does
2243          * not work correctly on the BCM5700 rev AX and BX chips,
2244          * according to all available information.  Hence, we have
2245          * to enable MII interrupts in order to properly obtain
2246          * async link changes.  Unfortunately, this also means that
2247          * we have to read the MAC status register to detect link
2248          * changes, thereby adding an additional register access to
2249          * the interrupt handler.
2250          */
2251
2252         if (sc->bge_asicrev == BGE_ASICREV_BCM5700) {
2253                 status = CSR_READ_4(sc, BGE_MAC_STS);
2254                 if (status & BGE_MACSTAT_MI_INTERRUPT) {
2255                         sc->bge_link = 0;
2256                         untimeout(bge_tick, sc, sc->bge_stat_ch);
2257                         bge_tick(sc);
2258                         /* Clear the interrupt */
2259                         CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
2260                             BGE_EVTENB_MI_INTERRUPT);
2261                         bge_miibus_readreg(sc->bge_dev, 1, BRGPHY_MII_ISR);
2262                         bge_miibus_writereg(sc->bge_dev, 1, BRGPHY_MII_IMR,
2263                             BRGPHY_INTRS);
2264                 }
2265         } else {
2266                 if ((sc->bge_rdata->bge_status_block.bge_status &
2267                     BGE_STATFLAG_UPDATED) &&
2268                     (sc->bge_rdata->bge_status_block.bge_status &
2269                     BGE_STATFLAG_LINKSTATE_CHANGED)) {
2270                         sc->bge_rdata->bge_status_block.bge_status &=
2271                                 ~(BGE_STATFLAG_UPDATED|
2272                                 BGE_STATFLAG_LINKSTATE_CHANGED);
2273                         /*
2274                          * Sometime PCS encoding errors are detected in
2275                          * TBI mode (on fiber NICs), and for some reason
2276                          * the chip will signal them as link changes.
2277                          * If we get a link change event, but the 'PCS
2278                          * encoding error' bit in the MAC status register
2279                          * is set, don't bother doing a link check.
2280                          * This avoids spurious "gigabit link up" messages
2281                          * that sometimes appear on fiber NIC's during
2282                          * periods of heavy traffic. (There should be no
2283                          * effect on copper NICs.)
2284                          */
2285                         status = CSR_READ_4(sc, BGE_MAC_STS);
2286                         if (!(status & (BGE_MACSTAT_PORT_DECODE_ERROR|
2287                             BGE_MACSTAT_MI_COMPLETE))) {
2288                                 sc->bge_link = 0;
2289                                 untimeout(bge_tick, sc, sc->bge_stat_ch);
2290                                 bge_tick(sc);
2291                         }
2292                         sc->bge_link = 0;
2293                         untimeout(bge_tick, sc, sc->bge_stat_ch);
2294                         bge_tick(sc);
2295                         /* Clear the interrupt */
2296                         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
2297                             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
2298                             BGE_MACSTAT_LINK_CHANGED);
2299
2300                         /* Force flush the status block cached by PCI bridge */
2301                         CSR_READ_4(sc, BGE_MBX_IRQ0_LO);
2302                 }
2303         }
2304
2305         if (ifp->if_flags & IFF_RUNNING) {
2306                 /* Check RX return ring producer/consumer */
2307                 bge_rxeof(sc);
2308
2309                 /* Check TX ring producer/consumer */
2310                 bge_txeof(sc);
2311         }
2312
2313         bge_handle_events(sc);
2314
2315         /* Re-enable interrupts. */
2316         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 0);
2317
2318         if (ifp->if_flags & IFF_RUNNING && ifp->if_snd.ifq_head != NULL)
2319                 bge_start(ifp);
2320
2321         return;
2322 }
2323
2324 static void
2325 bge_tick(xsc)
2326         void *xsc;
2327 {
2328         struct bge_softc *sc;
2329         struct mii_data *mii = NULL;
2330         struct ifmedia *ifm = NULL;
2331         struct ifnet *ifp;
2332         int s;
2333
2334         sc = xsc;
2335         ifp = &sc->arpcom.ac_if;
2336
2337         s = splimp();
2338
2339         if (sc->bge_asicrev == BGE_ASICREV_BCM5705)
2340                 bge_stats_update_regs(sc);
2341         else
2342                 bge_stats_update(sc);
2343         sc->bge_stat_ch = timeout(bge_tick, sc, hz);
2344         if (sc->bge_link) {
2345                 splx(s);
2346                 return;
2347         }
2348
2349         if (sc->bge_tbi) {
2350                 ifm = &sc->bge_ifmedia;
2351                 if (CSR_READ_4(sc, BGE_MAC_STS) &
2352                     BGE_MACSTAT_TBI_PCS_SYNCHED) {
2353                         sc->bge_link++;
2354                         CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF);
2355                         printf("bge%d: gigabit link up\n", sc->bge_unit);
2356                         if (ifp->if_snd.ifq_head != NULL)
2357                                 bge_start(ifp);
2358                 }
2359                 splx(s);
2360                 return;
2361         }
2362
2363         mii = device_get_softc(sc->bge_miibus);
2364         mii_tick(mii);
2365
2366         if (!sc->bge_link) {
2367                 mii_pollstat(mii);
2368                 if (mii->mii_media_status & IFM_ACTIVE &&
2369                     IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
2370                         sc->bge_link++;
2371                         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_TX ||
2372                             IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX)
2373                                 printf("bge%d: gigabit link up\n",
2374                                    sc->bge_unit);
2375                         if (ifp->if_snd.ifq_head != NULL)
2376                                 bge_start(ifp);
2377                 }
2378         }
2379
2380         splx(s);
2381
2382         return;
2383 }
2384
2385 static void
2386 bge_stats_update_regs(sc)
2387         struct bge_softc *sc;
2388 {
2389         struct ifnet *ifp;
2390         struct bge_mac_stats_regs stats;
2391         u_int32_t *s;
2392         int i;
2393
2394         ifp = &sc->arpcom.ac_if;
2395
2396         s = (u_int32_t *)&stats;
2397         for (i = 0; i < sizeof(struct bge_mac_stats_regs); i += 4) {
2398                 *s = CSR_READ_4(sc, BGE_RX_STATS + i);
2399                 s++;
2400         }
2401
2402         ifp->if_collisions +=
2403            (stats.dot3StatsSingleCollisionFrames +
2404            stats.dot3StatsMultipleCollisionFrames +
2405            stats.dot3StatsExcessiveCollisions +
2406            stats.dot3StatsLateCollisions) -
2407            ifp->if_collisions;
2408
2409         return;
2410 }
2411
2412 static void
2413 bge_stats_update(sc)
2414         struct bge_softc *sc;
2415 {
2416         struct ifnet *ifp;
2417         struct bge_stats *stats;
2418
2419         ifp = &sc->arpcom.ac_if;
2420
2421         stats = (struct bge_stats *)(sc->bge_vhandle +
2422             BGE_MEMWIN_START + BGE_STATS_BLOCK);
2423
2424         ifp->if_collisions +=
2425            (stats->txstats.dot3StatsSingleCollisionFrames.bge_addr_lo +
2426            stats->txstats.dot3StatsMultipleCollisionFrames.bge_addr_lo +
2427            stats->txstats.dot3StatsExcessiveCollisions.bge_addr_lo +
2428            stats->txstats.dot3StatsLateCollisions.bge_addr_lo) -
2429            ifp->if_collisions;
2430
2431 #ifdef notdef
2432         ifp->if_collisions +=
2433            (sc->bge_rdata->bge_info.bge_stats.dot3StatsSingleCollisionFrames +
2434            sc->bge_rdata->bge_info.bge_stats.dot3StatsMultipleCollisionFrames +
2435            sc->bge_rdata->bge_info.bge_stats.dot3StatsExcessiveCollisions +
2436            sc->bge_rdata->bge_info.bge_stats.dot3StatsLateCollisions) -
2437            ifp->if_collisions;
2438 #endif
2439
2440         return;
2441 }
2442
2443 /*
2444  * Encapsulate an mbuf chain in the tx ring  by coupling the mbuf data
2445  * pointers to descriptors.
2446  */
2447 static int
2448 bge_encap(sc, m_head, txidx)
2449         struct bge_softc *sc;
2450         struct mbuf *m_head;
2451         u_int32_t *txidx;
2452 {
2453         struct bge_tx_bd        *f = NULL;
2454         struct mbuf             *m;
2455         u_int32_t               frag, cur, cnt = 0;
2456         u_int16_t               csum_flags = 0;
2457         struct ifvlan           *ifv = NULL;
2458
2459         if ((m_head->m_flags & (M_PROTO1|M_PKTHDR)) == (M_PROTO1|M_PKTHDR) &&
2460             m_head->m_pkthdr.rcvif != NULL &&
2461             m_head->m_pkthdr.rcvif->if_type == IFT_L2VLAN)
2462                 ifv = m_head->m_pkthdr.rcvif->if_softc;
2463
2464         m = m_head;
2465         cur = frag = *txidx;
2466
2467         if (m_head->m_pkthdr.csum_flags) {
2468                 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
2469                         csum_flags |= BGE_TXBDFLAG_IP_CSUM;
2470                 if (m_head->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))
2471                         csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM;
2472                 if (m_head->m_flags & M_LASTFRAG)
2473                         csum_flags |= BGE_TXBDFLAG_IP_FRAG_END;
2474                 else if (m_head->m_flags & M_FRAG)
2475                         csum_flags |= BGE_TXBDFLAG_IP_FRAG;
2476         }
2477         /*
2478          * Start packing the mbufs in this chain into
2479          * the fragment pointers. Stop when we run out
2480          * of fragments or hit the end of the mbuf chain.
2481          */
2482         for (m = m_head; m != NULL; m = m->m_next) {
2483                 if (m->m_len != 0) {
2484                         f = &sc->bge_rdata->bge_tx_ring[frag];
2485                         if (sc->bge_cdata.bge_tx_chain[frag] != NULL)
2486                                 break;
2487                         BGE_HOSTADDR(f->bge_addr,
2488                             vtophys(mtod(m, vm_offset_t)));
2489                         f->bge_len = m->m_len;
2490                         f->bge_flags = csum_flags;
2491                         if (ifv != NULL) {
2492                                 f->bge_flags |= BGE_TXBDFLAG_VLAN_TAG;
2493                                 f->bge_vlan_tag = ifv->ifv_tag;
2494                         } else {
2495                                 f->bge_vlan_tag = 0;
2496                         }
2497                         /*
2498                          * Sanity check: avoid coming within 16 descriptors
2499                          * of the end of the ring.
2500                          */
2501                         if ((BGE_TX_RING_CNT - (sc->bge_txcnt + cnt)) < 16)
2502                                 return(ENOBUFS);
2503                         cur = frag;
2504                         BGE_INC(frag, BGE_TX_RING_CNT);
2505                         cnt++;
2506                 }
2507         }
2508
2509         if (m != NULL)
2510                 return(ENOBUFS);
2511
2512         if (frag == sc->bge_tx_saved_considx)
2513                 return(ENOBUFS);
2514
2515         sc->bge_rdata->bge_tx_ring[cur].bge_flags |= BGE_TXBDFLAG_END;
2516         sc->bge_cdata.bge_tx_chain[cur] = m_head;
2517         sc->bge_txcnt += cnt;
2518
2519         *txidx = frag;
2520
2521         return(0);
2522 }
2523
2524 /*
2525  * Main transmit routine. To avoid having to do mbuf copies, we put pointers
2526  * to the mbuf data regions directly in the transmit descriptors.
2527  */
2528 static void
2529 bge_start(ifp)
2530         struct ifnet *ifp;
2531 {
2532         struct bge_softc *sc;
2533         struct mbuf *m_head = NULL;
2534         u_int32_t prodidx = 0;
2535
2536         sc = ifp->if_softc;
2537
2538         if (!sc->bge_link && ifp->if_snd.ifq_len < 10)
2539                 return;
2540
2541         prodidx = CSR_READ_4(sc, BGE_MBX_TX_HOST_PROD0_LO);
2542
2543         while(sc->bge_cdata.bge_tx_chain[prodidx] == NULL) {
2544                 IF_DEQUEUE(&ifp->if_snd, m_head);
2545                 if (m_head == NULL)
2546                         break;
2547
2548                 /*
2549                  * XXX
2550                  * safety overkill.  If this is a fragmented packet chain
2551                  * with delayed TCP/UDP checksums, then only encapsulate
2552                  * it if we have enough descriptors to handle the entire
2553                  * chain at once.
2554                  * (paranoia -- may not actually be needed)
2555                  */
2556                 if (m_head->m_flags & M_FIRSTFRAG &&
2557                     m_head->m_pkthdr.csum_flags & (CSUM_DELAY_DATA)) {
2558                         if ((BGE_TX_RING_CNT - sc->bge_txcnt) <
2559                             m_head->m_pkthdr.csum_data + 16) {
2560                                 IF_PREPEND(&ifp->if_snd, m_head);
2561                                 ifp->if_flags |= IFF_OACTIVE;
2562                                 break;
2563                         }
2564                 }
2565
2566                 /*
2567                  * Pack the data into the transmit ring. If we
2568                  * don't have room, set the OACTIVE flag and wait
2569                  * for the NIC to drain the ring.
2570                  */
2571                 if (bge_encap(sc, m_head, &prodidx)) {
2572                         IF_PREPEND(&ifp->if_snd, m_head);
2573                         ifp->if_flags |= IFF_OACTIVE;
2574                         break;
2575                 }
2576
2577                 /*
2578                  * If there's a BPF listener, bounce a copy of this frame
2579                  * to him.
2580                  */
2581                 if (ifp->if_bpf)
2582                         bpf_mtap(ifp, m_head);
2583         }
2584
2585         /* Transmit */
2586         CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
2587         /* 5700 b2 errata */
2588         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
2589                 CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
2590
2591         /*
2592          * Set a timeout in case the chip goes out to lunch.
2593          */
2594         ifp->if_timer = 5;
2595
2596         return;
2597 }
2598
2599 static void
2600 bge_init(xsc)
2601         void *xsc;
2602 {
2603         struct bge_softc *sc = xsc;
2604         struct ifnet *ifp;
2605         u_int16_t *m;
2606         int s;
2607
2608         s = splimp();
2609
2610         ifp = &sc->arpcom.ac_if;
2611
2612         if (ifp->if_flags & IFF_RUNNING) {
2613                 splx(s);
2614                 return;
2615         }
2616
2617         /* Cancel pending I/O and flush buffers. */
2618         bge_stop(sc);
2619         bge_reset(sc);
2620         bge_chipinit(sc);
2621
2622         /*
2623          * Init the various state machines, ring
2624          * control blocks and firmware.
2625          */
2626         if (bge_blockinit(sc)) {
2627                 printf("bge%d: initialization failure\n", sc->bge_unit);
2628                 splx(s);
2629                 return;
2630         }
2631
2632         ifp = &sc->arpcom.ac_if;
2633
2634         /* Specify MTU. */
2635         CSR_WRITE_4(sc, BGE_RX_MTU, ifp->if_mtu +
2636             ETHER_HDR_LEN + ETHER_CRC_LEN);
2637
2638         /* Load our MAC address. */
2639         m = (u_int16_t *)&sc->arpcom.ac_enaddr[0];
2640         CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0]));
2641         CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2]));
2642
2643         /* Enable or disable promiscuous mode as needed. */
2644         if (ifp->if_flags & IFF_PROMISC) {
2645                 BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
2646         } else {
2647                 BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
2648         }
2649
2650         /* Program multicast filter. */
2651         bge_setmulti(sc);
2652
2653         /* Init RX ring. */
2654         bge_init_rx_ring_std(sc);
2655
2656         /*
2657          * Workaround for a bug in 5705 ASIC rev A0. Poll the NIC's
2658          * memory to insure that the chip has in fact read the first
2659          * entry of the ring.
2660          */
2661         if (sc->bge_chipid == BGE_CHIPID_BCM5705_A0) {
2662                 u_int32_t               v, i;
2663                 for (i = 0; i < 10; i++) {
2664                         DELAY(20);
2665                         v = bge_readmem_ind(sc, BGE_STD_RX_RINGS + 8);
2666                         if (v == (MCLBYTES - ETHER_ALIGN))
2667                                 break;
2668                 }
2669                 if (i == 10)
2670                         printf ("bge%d: 5705 A0 chip failed to load RX ring\n",
2671                             sc->bge_unit);
2672         }
2673
2674         /* Init jumbo RX ring. */
2675         if (ifp->if_mtu > (ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN))
2676                 bge_init_rx_ring_jumbo(sc);
2677
2678         /* Init our RX return ring index */
2679         sc->bge_rx_saved_considx = 0;
2680
2681         /* Init TX ring. */
2682         bge_init_tx_ring(sc);
2683
2684         /* Turn on transmitter */
2685         BGE_SETBIT(sc, BGE_TX_MODE, BGE_TXMODE_ENABLE);
2686
2687         /* Turn on receiver */
2688         BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
2689
2690         /* Tell firmware we're alive. */
2691         BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
2692
2693         /* Enable host interrupts. */
2694         BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA);
2695         BGE_CLRBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
2696         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 0);
2697
2698         bge_ifmedia_upd(ifp);
2699
2700         ifp->if_flags |= IFF_RUNNING;
2701         ifp->if_flags &= ~IFF_OACTIVE;
2702
2703         splx(s);
2704
2705         sc->bge_stat_ch = timeout(bge_tick, sc, hz);
2706
2707         return;
2708 }
2709
2710 /*
2711  * Set media options.
2712  */
2713 static int
2714 bge_ifmedia_upd(ifp)
2715         struct ifnet *ifp;
2716 {
2717         struct bge_softc *sc;
2718         struct mii_data *mii;
2719         struct ifmedia *ifm;
2720
2721         sc = ifp->if_softc;
2722         ifm = &sc->bge_ifmedia;
2723
2724         /* If this is a 1000baseX NIC, enable the TBI port. */
2725         if (sc->bge_tbi) {
2726                 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
2727                         return(EINVAL);
2728                 switch(IFM_SUBTYPE(ifm->ifm_media)) {
2729                 case IFM_AUTO:
2730                         break;
2731                 case IFM_1000_SX:
2732                         if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) {
2733                                 BGE_CLRBIT(sc, BGE_MAC_MODE,
2734                                     BGE_MACMODE_HALF_DUPLEX);
2735                         } else {
2736                                 BGE_SETBIT(sc, BGE_MAC_MODE,
2737                                     BGE_MACMODE_HALF_DUPLEX);
2738                         }
2739                         break;
2740                 default:
2741                         return(EINVAL);
2742                 }
2743                 return(0);
2744         }
2745
2746         mii = device_get_softc(sc->bge_miibus);
2747         sc->bge_link = 0;
2748         if (mii->mii_instance) {
2749                 struct mii_softc *miisc;
2750                 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL;
2751                     miisc = LIST_NEXT(miisc, mii_list))
2752                         mii_phy_reset(miisc);
2753         }
2754         mii_mediachg(mii);
2755
2756         return(0);
2757 }
2758
2759 /*
2760  * Report current media status.
2761  */
2762 static void
2763 bge_ifmedia_sts(ifp, ifmr)
2764         struct ifnet *ifp;
2765         struct ifmediareq *ifmr;
2766 {
2767         struct bge_softc *sc;
2768         struct mii_data *mii;
2769
2770         sc = ifp->if_softc;
2771
2772         if (sc->bge_tbi) {
2773                 ifmr->ifm_status = IFM_AVALID;
2774                 ifmr->ifm_active = IFM_ETHER;
2775                 if (CSR_READ_4(sc, BGE_MAC_STS) &
2776                     BGE_MACSTAT_TBI_PCS_SYNCHED)
2777                         ifmr->ifm_status |= IFM_ACTIVE;
2778                 ifmr->ifm_active |= IFM_1000_SX;
2779                 if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX)
2780                         ifmr->ifm_active |= IFM_HDX;
2781                 else
2782                         ifmr->ifm_active |= IFM_FDX;
2783                 return;
2784         }
2785
2786         mii = device_get_softc(sc->bge_miibus);
2787         mii_pollstat(mii);
2788         ifmr->ifm_active = mii->mii_media_active;
2789         ifmr->ifm_status = mii->mii_media_status;
2790
2791         return;
2792 }
2793
2794 static int
2795 bge_ioctl(ifp, command, data)
2796         struct ifnet *ifp;
2797         u_long command;
2798         caddr_t data;
2799 {
2800         struct bge_softc *sc = ifp->if_softc;
2801         struct ifreq *ifr = (struct ifreq *) data;
2802         int s, mask, error = 0;
2803         struct mii_data *mii;
2804
2805         s = splimp();
2806
2807         switch(command) {
2808         case SIOCSIFADDR:
2809         case SIOCGIFADDR:
2810                 error = ether_ioctl(ifp, command, data);
2811                 break;
2812         case SIOCSIFMTU:
2813                 /* Disallow jumbo frames on 5705. */
2814                 if ((sc->bge_asicrev == BGE_ASICREV_BCM5705 &&
2815                     ifr->ifr_mtu > ETHERMTU) || ifr->ifr_mtu > BGE_JUMBO_MTU)
2816                         error = EINVAL;
2817                 else {
2818                         ifp->if_mtu = ifr->ifr_mtu;
2819                         ifp->if_flags &= ~IFF_RUNNING;
2820                         bge_init(sc);
2821                 }
2822                 break;
2823         case SIOCSIFFLAGS:
2824                 if (ifp->if_flags & IFF_UP) {
2825                         /*
2826                          * If only the state of the PROMISC flag changed,
2827                          * then just use the 'set promisc mode' command
2828                          * instead of reinitializing the entire NIC. Doing
2829                          * a full re-init means reloading the firmware and
2830                          * waiting for it to start up, which may take a
2831                          * second or two.
2832                          */
2833                         if (ifp->if_flags & IFF_RUNNING &&
2834                             ifp->if_flags & IFF_PROMISC &&
2835                             !(sc->bge_if_flags & IFF_PROMISC)) {
2836                                 BGE_SETBIT(sc, BGE_RX_MODE,
2837                                     BGE_RXMODE_RX_PROMISC);
2838                         } else if (ifp->if_flags & IFF_RUNNING &&
2839                             !(ifp->if_flags & IFF_PROMISC) &&
2840                             sc->bge_if_flags & IFF_PROMISC) {
2841                                 BGE_CLRBIT(sc, BGE_RX_MODE,
2842                                     BGE_RXMODE_RX_PROMISC);
2843                         } else
2844                                 bge_init(sc);
2845                 } else {
2846                         if (ifp->if_flags & IFF_RUNNING) {
2847                                 bge_stop(sc);
2848                         }
2849                 }
2850                 sc->bge_if_flags = ifp->if_flags;
2851                 error = 0;
2852                 break;
2853         case SIOCADDMULTI:
2854         case SIOCDELMULTI:
2855                 if (ifp->if_flags & IFF_RUNNING) {
2856                         bge_setmulti(sc);
2857                         error = 0;
2858                 }
2859                 break;
2860         case SIOCSIFMEDIA:
2861         case SIOCGIFMEDIA:
2862                 if (sc->bge_tbi) {
2863                         error = ifmedia_ioctl(ifp, ifr,
2864                             &sc->bge_ifmedia, command);
2865                 } else {
2866                         mii = device_get_softc(sc->bge_miibus);
2867                         error = ifmedia_ioctl(ifp, ifr,
2868                             &mii->mii_media, command);
2869                 }
2870                 break;
2871         case SIOCSIFCAP:
2872                 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
2873                 if (mask & IFCAP_HWCSUM) {
2874                         if (IFCAP_HWCSUM & ifp->if_capenable)
2875                                 ifp->if_capenable &= ~IFCAP_HWCSUM;
2876                         else
2877                                 ifp->if_capenable |= IFCAP_HWCSUM;
2878                 }
2879                 error = 0;
2880                 break;
2881         default:
2882                 error = EINVAL;
2883                 break;
2884         }
2885
2886         (void)splx(s);
2887
2888         return(error);
2889 }
2890
2891 static void
2892 bge_watchdog(ifp)
2893         struct ifnet *ifp;
2894 {
2895         struct bge_softc *sc;
2896
2897         sc = ifp->if_softc;
2898
2899         printf("bge%d: watchdog timeout -- resetting\n", sc->bge_unit);
2900
2901         ifp->if_flags &= ~IFF_RUNNING;
2902         bge_init(sc);
2903
2904         ifp->if_oerrors++;
2905
2906         return;
2907 }
2908
2909 /*
2910  * Stop the adapter and free any mbufs allocated to the
2911  * RX and TX lists.
2912  */
2913 static void
2914 bge_stop(sc)
2915         struct bge_softc *sc;
2916 {
2917         struct ifnet *ifp;
2918         struct ifmedia_entry *ifm;
2919         struct mii_data *mii = NULL;
2920         int mtmp, itmp;
2921
2922         ifp = &sc->arpcom.ac_if;
2923
2924         if (!sc->bge_tbi)
2925                 mii = device_get_softc(sc->bge_miibus);
2926
2927         untimeout(bge_tick, sc, sc->bge_stat_ch);
2928
2929         /*
2930          * Disable all of the receiver blocks
2931          */
2932         BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
2933         BGE_CLRBIT(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
2934         BGE_CLRBIT(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
2935         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
2936                 BGE_CLRBIT(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
2937         BGE_CLRBIT(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE);
2938         BGE_CLRBIT(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
2939         BGE_CLRBIT(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE);
2940
2941         /*
2942          * Disable all of the transmit blocks
2943          */
2944         BGE_CLRBIT(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
2945         BGE_CLRBIT(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
2946         BGE_CLRBIT(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
2947         BGE_CLRBIT(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE);
2948         BGE_CLRBIT(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
2949         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
2950                 BGE_CLRBIT(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
2951         BGE_CLRBIT(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
2952
2953         /*
2954          * Shut down all of the memory managers and related
2955          * state machines.
2956          */
2957         BGE_CLRBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
2958         BGE_CLRBIT(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE);
2959         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
2960                 BGE_CLRBIT(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
2961         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
2962         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
2963         if (sc->bge_asicrev != BGE_ASICREV_BCM5705) {
2964                 BGE_CLRBIT(sc, BGE_BMAN_MODE, BGE_BMANMODE_ENABLE);
2965                 BGE_CLRBIT(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
2966         }
2967
2968         /* Disable host interrupts. */
2969         BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
2970         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 1);
2971
2972         /*
2973          * Tell firmware we're shutting down.
2974          */
2975         BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
2976
2977         /* Free the RX lists. */
2978         bge_free_rx_ring_std(sc);
2979
2980         /* Free jumbo RX list. */
2981         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
2982                 bge_free_rx_ring_jumbo(sc);
2983
2984         /* Free TX buffers. */
2985         bge_free_tx_ring(sc);
2986
2987         /*
2988          * Isolate/power down the PHY, but leave the media selection
2989          * unchanged so that things will be put back to normal when
2990          * we bring the interface back up.
2991          */
2992         if (!sc->bge_tbi) {
2993                 itmp = ifp->if_flags;
2994                 ifp->if_flags |= IFF_UP;
2995                 ifm = mii->mii_media.ifm_cur;
2996                 mtmp = ifm->ifm_media;
2997                 ifm->ifm_media = IFM_ETHER|IFM_NONE;
2998                 mii_mediachg(mii);
2999                 ifm->ifm_media = mtmp;
3000                 ifp->if_flags = itmp;
3001         }
3002
3003         sc->bge_link = 0;
3004
3005         sc->bge_tx_saved_considx = BGE_TXCONS_UNSET;
3006
3007         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3008
3009         return;
3010 }
3011
3012 /*
3013  * Stop all chip I/O so that the kernel's probe routines don't
3014  * get confused by errant DMAs when rebooting.
3015  */
3016 static void
3017 bge_shutdown(dev)
3018         device_t dev;
3019 {
3020         struct bge_softc *sc;
3021
3022         sc = device_get_softc(dev);
3023
3024         bge_stop(sc);
3025         bge_reset(sc);
3026
3027         return;
3028 }