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 1.51 2005/11/29 19:56:50 dillon 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 "opt_bge.h"
  76
  77 #include <sys/param.h>
  78 #include <sys/systm.h>
  79 #include <sys/sockio.h>
  80 #include <sys/mbuf.h>
  81 #include <sys/malloc.h>
  82 #include <sys/kernel.h>
  83 #include <sys/socket.h>
  84 #include <sys/queue.h>
  85 #include <sys/serialize.h>
  86 #include <sys/thread2.h>
  87
  88 #include <net/if.h>
  89 #include <net/ifq_var.h>
  90 #include <net/if_arp.h>
  91 #include <net/ethernet.h>
  92 #include <net/if_dl.h>
  93 #include <net/if_media.h>
  94
  95 #include <net/bpf.h>
  96
  97 #include <net/if_types.h>
  98 #include <net/vlan/if_vlan_var.h>
  99
 100 #include <netinet/in_systm.h>
 101 #include <netinet/in.h>
 102 #include <netinet/ip.h>
 103
 104 #include <vm/vm.h>              /* for vtophys */
 105 #include <vm/pmap.h>            /* for vtophys */
 106 #include <machine/resource.h>
 107 #include <sys/bus.h>
 108 #include <sys/rman.h>
 109
 110 #include <dev/netif/mii_layer/mii.h>
 111 #include <dev/netif/mii_layer/miivar.h>
 112 #include <dev/netif/mii_layer/miidevs.h>
 113 #include <dev/netif/mii_layer/brgphyreg.h>
 114
 115 #include <bus/pci/pcidevs.h>
 116 #include <bus/pci/pcireg.h>
 117 #include <bus/pci/pcivar.h>
 118
 119 #include "if_bgereg.h"
 120
 121 #define BGE_CSUM_FEATURES       (CSUM_IP | CSUM_TCP | CSUM_UDP)
 122
 123 /* "controller miibus0" required.  See GENERIC if you get errors here. */
 124 #include "miibus_if.h"
 125
 126 /*
 127  * Various supported device vendors/types and their names. Note: the
 128  * spec seems to indicate that the hardware still has Alteon's vendor
 129  * ID burned into it, though it will always be overriden by the vendor
 130  * ID in the EEPROM. Just to be safe, we cover all possibilities.
 131  */
 132 #define BGE_DEVDESC_MAX         64      /* Maximum device description length */
 133
 134 static struct bge_type bge_devs[] = {
 135         { PCI_VENDOR_ALTEON, PCI_PRODUCT_ALTEON_BCM5700,
 136                 "Alteon BCM5700 Gigabit Ethernet" },
 137         { PCI_VENDOR_ALTEON, PCI_PRODUCT_ALTEON_BCM5701,
 138                 "Alteon BCM5701 Gigabit Ethernet" },
 139         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5700,
 140                 "Broadcom BCM5700 Gigabit Ethernet" },
 141         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5701,
 142                 "Broadcom BCM5701 Gigabit Ethernet" },
 143         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702X,
 144                 "Broadcom BCM5702X Gigabit Ethernet" },
 145         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5702_ALT,
 146                 "Broadcom BCM5702 Gigabit Ethernet" },
 147         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703X,
 148                 "Broadcom BCM5703X Gigabit Ethernet" },
 149         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5703A3,
 150                 "Broadcom BCM5703 Gigabit Ethernet" },
 151         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704C,
 152                 "Broadcom BCM5704C Dual Gigabit Ethernet" },
 153         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704S,
 154                 "Broadcom BCM5704S Dual Gigabit Ethernet" },
 155         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705,
 156                 "Broadcom BCM5705 Gigabit Ethernet" },
 157         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705K,
 158                 "Broadcom BCM5705K Gigabit Ethernet" },
 159         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705M,
 160                 "Broadcom BCM5705M Gigabit Ethernet" },
 161         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5705M_ALT,
 162                 "Broadcom BCM5705M Gigabit Ethernet" },
 163         { PCI_VENDOR_BROADCOM, BCOM_DEVICEID_BCM5714C,
 164                 "Broadcom BCM5714C Gigabit Ethernet" },
 165         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5721,
 166                 "Broadcom BCM5721 Gigabit Ethernet" },
 167         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5750,
 168                 "Broadcom BCM5750 Gigabit Ethernet" },
 169         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5750M,
 170                 "Broadcom BCM5750M Gigabit Ethernet" },
 171         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751,
 172                 "Broadcom BCM5751 Gigabit Ethernet" },
 173         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5751M,
 174                 "Broadcom BCM5751M Gigabit Ethernet" },
 175         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5782,
 176                 "Broadcom BCM5782 Gigabit Ethernet" },
 177         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5788,
 178                 "Broadcom BCM5788 Gigabit Ethernet" },
 179         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5789,
 180                 "Broadcom BCM5789 Gigabit Ethernet" },
 181         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5901,
 182                 "Broadcom BCM5901 Fast Ethernet" },
 183         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5901A2,
 184                 "Broadcom BCM5901A2 Fast Ethernet" },
 185         { PCI_VENDOR_SCHNEIDERKOCH, PCI_PRODUCT_SCHNEIDERKOCH_SK_9DX1,
 186                 "SysKonnect Gigabit Ethernet" },
 187         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC1000,
 188                 "Altima AC1000 Gigabit Ethernet" },
 189         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC1001,
 190                 "Altima AC1002 Gigabit Ethernet" },
 191         { PCI_VENDOR_ALTIMA, PCI_PRODUCT_ALTIMA_AC9100,
 192                 "Altima AC9100 Gigabit Ethernet" },
 193         { 0, 0, NULL }
 194 };
 195
 196 static int      bge_probe(device_t);
 197 static int      bge_attach(device_t);
 198 static int      bge_detach(device_t);
 199 static void     bge_release_resources(struct bge_softc *);
 200 static void     bge_txeof(struct bge_softc *);
 201 static void     bge_rxeof(struct bge_softc *);
 202
 203 static void     bge_tick(void *);
 204 static void     bge_tick_serialized(void *);
 205 static void     bge_stats_update(struct bge_softc *);
 206 static void     bge_stats_update_regs(struct bge_softc *);
 207 static int      bge_encap(struct bge_softc *, struct mbuf *, uint32_t *);
 208
 209 static void     bge_intr(void *);
 210 static void     bge_start(struct ifnet *);
 211 static int      bge_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
 212 static void     bge_init(void *);
 213 static void     bge_stop(struct bge_softc *);
 214 static void     bge_watchdog(struct ifnet *);
 215 static void     bge_shutdown(device_t);
 216 static int      bge_ifmedia_upd(struct ifnet *);
 217 static void     bge_ifmedia_sts(struct ifnet *, struct ifmediareq *);
 218
 219 static uint8_t  bge_eeprom_getbyte(struct bge_softc *, uint32_t, uint8_t *);
 220 static int      bge_read_eeprom(struct bge_softc *, caddr_t, uint32_t, size_t);
 221
 222 static void     bge_setmulti(struct bge_softc *);
 223
 224 static void     bge_handle_events(struct bge_softc *);
 225 static int      bge_alloc_jumbo_mem(struct bge_softc *);
 226 static void     bge_free_jumbo_mem(struct bge_softc *);
 227 static struct bge_jslot
 228                 *bge_jalloc(struct bge_softc *);
 229 static void     bge_jfree(void *);
 230 static void     bge_jref(void *);
 231 static int      bge_newbuf_std(struct bge_softc *, int, struct mbuf *);
 232 static int      bge_newbuf_jumbo(struct bge_softc *, int, struct mbuf *);
 233 static int      bge_init_rx_ring_std(struct bge_softc *);
 234 static void     bge_free_rx_ring_std(struct bge_softc *);
 235 static int      bge_init_rx_ring_jumbo(struct bge_softc *);
 236 static void     bge_free_rx_ring_jumbo(struct bge_softc *);
 237 static void     bge_free_tx_ring(struct bge_softc *);
 238 static int      bge_init_tx_ring(struct bge_softc *);
 239
 240 static int      bge_chipinit(struct bge_softc *);
 241 static int      bge_blockinit(struct bge_softc *);
 242
 243 #ifdef notdef
 244 static uint8_t  bge_vpd_readbyte(struct bge_softc *, uint32_t);
 245 static void     bge_vpd_read_res(struct bge_softc *, struct vpd_res *, uint32_t);
 246 static void     bge_vpd_read(struct bge_softc *);
 247 #endif
 248
 249 static uint32_t bge_readmem_ind(struct bge_softc *, uint32_t);
 250 static void     bge_writemem_ind(struct bge_softc *, uint32_t, uint32_t);
 251 #ifdef notdef
 252 static uint32_t bge_readreg_ind(struct bge_softc *, uint32_t);
 253 #endif
 254 static void     bge_writereg_ind(struct bge_softc *, uint32_t, uint32_t);
 255
 256 static int      bge_miibus_readreg(device_t, int, int);
 257 static int      bge_miibus_writereg(device_t, int, int, int);
 258 static void     bge_miibus_statchg(device_t);
 259
 260 static void     bge_reset(struct bge_softc *);
 261
 262 static device_method_t bge_methods[] = {
 263         /* Device interface */
 264         DEVMETHOD(device_probe,         bge_probe),
 265         DEVMETHOD(device_attach,        bge_attach),
 266         DEVMETHOD(device_detach,        bge_detach),
 267         DEVMETHOD(device_shutdown,      bge_shutdown),
 268
 269         /* bus interface */
 270         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 271         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
 272
 273         /* MII interface */
 274         DEVMETHOD(miibus_readreg,       bge_miibus_readreg),
 275         DEVMETHOD(miibus_writereg,      bge_miibus_writereg),
 276         DEVMETHOD(miibus_statchg,       bge_miibus_statchg),
 277
 278         { 0, 0 }
 279 };
 280
 281 static DEFINE_CLASS_0(bge, bge_driver, bge_methods, sizeof(struct bge_softc));
 282 static devclass_t bge_devclass;
 283
 284 DECLARE_DUMMY_MODULE(if_bge);
 285 DRIVER_MODULE(if_bge, pci, bge_driver, bge_devclass, 0, 0);
 286 DRIVER_MODULE(miibus, bge, miibus_driver, miibus_devclass, 0, 0);
 287
 288 static uint32_t
 289 bge_readmem_ind(struct bge_softc *sc, uint32_t off)
 290 {
 291         device_t dev = sc->bge_dev;
 292
 293         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 294         return(pci_read_config(dev, BGE_PCI_MEMWIN_DATA, 4));
 295 }
 296
 297 static void
 298 bge_writemem_ind(struct bge_softc *sc, uint32_t off, uint32_t val)
 299 {
 300         device_t dev = sc->bge_dev;
 301
 302         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 303         pci_write_config(dev, BGE_PCI_MEMWIN_DATA, val, 4);
 304 }
 305
 306 #ifdef notdef
 307 static uint32_t
 308 bge_readreg_ind(struct bge_softc *sc, uin32_t off)
 309 {
 310         device_t 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(struct bge_softc *sc, uint32_t off, uint32_t val)
 319 {
 320         device_t dev = sc->bge_dev;
 321
 322         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 323         pci_write_config(dev, BGE_PCI_REG_DATA, val, 4);
 324 }
 325
 326 #ifdef notdef
 327 static uint8_t
 328 bge_vpd_readbyte(struct bge_softc *sc, uint32_t addr)
 329 {
 330         device_t dev = sc->bge_dev;
 331         uint32_t val;
 332         int i;
 333
 334         pci_write_config(dev, BGE_PCI_VPD_ADDR, addr, 2);
 335         for (i = 0; i < BGE_TIMEOUT * 10; i++) {
 336                 DELAY(10);
 337                 if (pci_read_config(dev, BGE_PCI_VPD_ADDR, 2) & BGE_VPD_FLAG)
 338                         break;
 339         }
 340
 341         if (i == BGE_TIMEOUT) {
 342                 device_printf(sc->bge_dev, "VPD read timed out\n");
 343                 return(0);
 344         }
 345
 346         val = pci_read_config(dev, BGE_PCI_VPD_DATA, 4);
 347
 348         return((val >> ((addr % 4) * 8)) & 0xFF);
 349 }
 350
 351 static void
 352 bge_vpd_read_res(struct bge_softc *sc, struct vpd_res *res, uint32_t addr)
 353 {
 354         size_t i;
 355         uint8_t *ptr;
 356
 357         ptr = (uint8_t *)res;
 358         for (i = 0; i < sizeof(struct vpd_res); i++)
 359                 ptr[i] = bge_vpd_readbyte(sc, i + addr);
 360
 361         return;
 362 }
 363
 364 static void
 365 bge_vpd_read(struct bge_softc *sc)
 366 {
 367         int pos = 0, i;
 368         struct vpd_res res;
 369
 370         if (sc->bge_vpd_prodname != NULL)
 371                 free(sc->bge_vpd_prodname, M_DEVBUF);
 372         if (sc->bge_vpd_readonly != NULL)
 373                 free(sc->bge_vpd_readonly, M_DEVBUF);
 374         sc->bge_vpd_prodname = NULL;
 375         sc->bge_vpd_readonly = NULL;
 376
 377         bge_vpd_read_res(sc, &res, pos);
 378
 379         if (res.vr_id != VPD_RES_ID) {
 380                 device_printf(sc->bge_dev,
 381                               "bad VPD resource id: expected %x got %x\n",
 382                               VPD_RES_ID, res.vr_id);
 383                 return;
 384         }
 385
 386         pos += sizeof(res);
 387         sc->bge_vpd_prodname = malloc(res.vr_len + 1, M_DEVBUF, M_INTWAIT);
 388         for (i = 0; i < res.vr_len; i++)
 389                 sc->bge_vpd_prodname[i] = bge_vpd_readbyte(sc, i + pos);
 390         sc->bge_vpd_prodname[i] = '\0';
 391         pos += i;
 392
 393         bge_vpd_read_res(sc, &res, pos);
 394
 395         if (res.vr_id != VPD_RES_READ) {
 396                 device_printf(sc->bge_dev,
 397                               "bad VPD resource id: expected %x got %x\n",
 398                               VPD_RES_READ, res.vr_id);
 399                 return;
 400         }
 401
 402         pos += sizeof(res);
 403         sc->bge_vpd_readonly = malloc(res.vr_len, M_DEVBUF, M_INTWAIT);
 404         for (i = 0; i < res.vr_len + 1; i++)
 405                 sc->bge_vpd_readonly[i] = bge_vpd_readbyte(sc, i + pos);
 406 }
 407 #endif
 408
 409 /*
 410  * Read a byte of data stored in the EEPROM at address 'addr.' The
 411  * BCM570x supports both the traditional bitbang interface and an
 412  * auto access interface for reading the EEPROM. We use the auto
 413  * access method.
 414  */
 415 static uint8_t
 416 bge_eeprom_getbyte(struct bge_softc *sc, uint32_t addr, uint8_t *dest)
 417 {
 418         int i;
 419         uint32_t byte = 0;
 420
 421         /*
 422          * Enable use of auto EEPROM access so we can avoid
 423          * having to use the bitbang method.
 424          */
 425         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM);
 426
 427         /* Reset the EEPROM, load the clock period. */
 428         CSR_WRITE_4(sc, BGE_EE_ADDR,
 429             BGE_EEADDR_RESET|BGE_EEHALFCLK(BGE_HALFCLK_384SCL));
 430         DELAY(20);
 431
 432         /* Issue the read EEPROM command. */
 433         CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr);
 434
 435         /* Wait for completion */
 436         for(i = 0; i < BGE_TIMEOUT * 10; i++) {
 437                 DELAY(10);
 438                 if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE)
 439                         break;
 440         }
 441
 442         if (i == BGE_TIMEOUT) {
 443                 if_printf(&sc->arpcom.ac_if, "eeprom read timed out\n");
 444                 return(0);
 445         }
 446
 447         /* Get result. */
 448         byte = CSR_READ_4(sc, BGE_EE_DATA);
 449
 450         *dest = (byte >> ((addr % 4) * 8)) & 0xFF;
 451
 452         return(0);
 453 }
 454
 455 /*
 456  * Read a sequence of bytes from the EEPROM.
 457  */
 458 static int
 459 bge_read_eeprom(struct bge_softc *sc, caddr_t dest, uint32_t off, size_t len)
 460 {
 461         size_t i;
 462         int err;
 463         uint8_t byte;
 464
 465         for (byte = 0, err = 0, i = 0; i < len; i++) {
 466                 err = bge_eeprom_getbyte(sc, off + i, &byte);
 467                 if (err)
 468                         break;
 469                 *(dest + i) = byte;
 470         }
 471
 472         return(err ? 1 : 0);
 473 }
 474
 475 static int
 476 bge_miibus_readreg(device_t dev, int phy, int reg)
 477 {
 478         struct bge_softc *sc;
 479         struct ifnet *ifp;
 480         uint32_t val, autopoll;
 481         int i;
 482
 483         sc = device_get_softc(dev);
 484         ifp = &sc->arpcom.ac_if;
 485
 486         /*
 487          * Broadcom's own driver always assumes the internal
 488          * PHY is at GMII address 1. On some chips, the PHY responds
 489          * to accesses at all addresses, which could cause us to
 490          * bogusly attach the PHY 32 times at probe type. Always
 491          * restricting the lookup to address 1 is simpler than
 492          * trying to figure out which chips revisions should be
 493          * special-cased.
 494          */
 495         if (phy != 1)
 496                 return(0);
 497
 498         /* Reading with autopolling on may trigger PCI errors */
 499         autopoll = CSR_READ_4(sc, BGE_MI_MODE);
 500         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 501                 BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 502                 DELAY(40);
 503         }
 504
 505         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ|BGE_MICOMM_BUSY|
 506             BGE_MIPHY(phy)|BGE_MIREG(reg));
 507
 508         for (i = 0; i < BGE_TIMEOUT; i++) {
 509                 val = CSR_READ_4(sc, BGE_MI_COMM);
 510                 if (!(val & BGE_MICOMM_BUSY))
 511                         break;
 512         }
 513
 514         if (i == BGE_TIMEOUT) {
 515                 if_printf(ifp, "PHY read timed out\n");
 516                 val = 0;
 517                 goto done;
 518         }
 519
 520         val = CSR_READ_4(sc, BGE_MI_COMM);
 521
 522 done:
 523         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 524                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 525                 DELAY(40);
 526         }
 527
 528         if (val & BGE_MICOMM_READFAIL)
 529                 return(0);
 530
 531         return(val & 0xFFFF);
 532 }
 533
 534 static int
 535 bge_miibus_writereg(device_t dev, int phy, int reg, int val)
 536 {
 537         struct bge_softc *sc;
 538         uint32_t autopoll;
 539         int i;
 540
 541         sc = device_get_softc(dev);
 542
 543         /* Reading with autopolling on may trigger PCI errors */
 544         autopoll = CSR_READ_4(sc, BGE_MI_MODE);
 545         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 546                 BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 547                 DELAY(40);
 548         }
 549
 550         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE|BGE_MICOMM_BUSY|
 551             BGE_MIPHY(phy)|BGE_MIREG(reg)|val);
 552
 553         for (i = 0; i < BGE_TIMEOUT; i++) {
 554                 if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY))
 555                         break;
 556         }
 557
 558         if (autopoll & BGE_MIMODE_AUTOPOLL) {
 559                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
 560                 DELAY(40);
 561         }
 562
 563         if (i == BGE_TIMEOUT) {
 564                 if_printf(&sc->arpcom.ac_if, "PHY read timed out\n");
 565                 return(0);
 566         }
 567
 568         return(0);
 569 }
 570
 571 static void
 572 bge_miibus_statchg(device_t dev)
 573 {
 574         struct bge_softc *sc;
 575         struct mii_data *mii;
 576
 577         sc = device_get_softc(dev);
 578         mii = device_get_softc(sc->bge_miibus);
 579
 580         BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE);
 581         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
 582                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII);
 583         } else {
 584                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII);
 585         }
 586
 587         if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
 588                 BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 589         } else {
 590                 BGE_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 591         }
 592 }
 593
 594 /*
 595  * Handle events that have triggered interrupts.
 596  */
 597 static void
 598 bge_handle_events(struct bge_softc *sc)
 599 {
 600 }
 601
 602 /*
 603  * Memory management for jumbo frames.
 604  */
 605 static int
 606 bge_alloc_jumbo_mem(struct bge_softc *sc)
 607 {
 608         struct bge_jslot *entry;
 609         caddr_t ptr;
 610         int i;
 611
 612         /* Grab a big chunk o' storage. */
 613         sc->bge_cdata.bge_jumbo_buf = contigmalloc(BGE_JMEM, M_DEVBUF,
 614                 M_WAITOK, 0, 0xffffffff, PAGE_SIZE, 0);
 615
 616         if (sc->bge_cdata.bge_jumbo_buf == NULL) {
 617                 if_printf(&sc->arpcom.ac_if, "no memory for jumbo buffers!\n");
 618                 return(ENOBUFS);
 619         }
 620
 621         SLIST_INIT(&sc->bge_jfree_listhead);
 622
 623         /*
 624          * Now divide it up into 9K pieces and save the addresses
 625          * in an array. Note that we play an evil trick here by using
 626          * the first few bytes in the buffer to hold the the address
 627          * of the softc structure for this interface. This is because
 628          * bge_jfree() needs it, but it is called by the mbuf management
 629          * code which will not pass it to us explicitly.
 630          */
 631         ptr = sc->bge_cdata.bge_jumbo_buf;
 632         for (i = 0; i < BGE_JSLOTS; i++) {
 633                 entry = &sc->bge_cdata.bge_jslots[i];
 634                 entry->bge_sc = sc;
 635                 entry->bge_buf = ptr;
 636                 entry->bge_inuse = 0;
 637                 entry->bge_slot = i;
 638                 SLIST_INSERT_HEAD(&sc->bge_jfree_listhead, entry, jslot_link);
 639                 ptr += BGE_JLEN;
 640         }
 641
 642         return(0);
 643 }
 644
 645 static void
 646 bge_free_jumbo_mem(struct bge_softc *sc)
 647 {
 648         if (sc->bge_cdata.bge_jumbo_buf)
 649                 contigfree(sc->bge_cdata.bge_jumbo_buf, BGE_JMEM, M_DEVBUF);
 650 }
 651
 652 /*
 653  * Allocate a jumbo buffer.
 654  */
 655 static struct bge_jslot *
 656 bge_jalloc(struct bge_softc *sc)
 657 {
 658         struct bge_jslot *entry;
 659
 660         lwkt_serialize_enter(&sc->bge_jslot_serializer);
 661         entry = SLIST_FIRST(&sc->bge_jfree_listhead);
 662         if (entry) {
 663                 SLIST_REMOVE_HEAD(&sc->bge_jfree_listhead, jslot_link);
 664                 entry->bge_inuse = 1;
 665         } else {
 666                 if_printf(&sc->arpcom.ac_if, "no free jumbo buffers\n");
 667         }
 668         lwkt_serialize_exit(&sc->bge_jslot_serializer);
 669         return(entry);
 670 }
 671
 672 /*
 673  * Adjust usage count on a jumbo buffer.
 674  */
 675 static void
 676 bge_jref(void *arg)
 677 {
 678         struct bge_jslot *entry = (struct bge_jslot *)arg;
 679         struct bge_softc *sc = entry->bge_sc;
 680
 681         if (sc == NULL)
 682                 panic("bge_jref: can't find softc pointer!");
 683
 684         if (&sc->bge_cdata.bge_jslots[entry->bge_slot] != entry) {
 685                 panic("bge_jref: asked to reference buffer "
 686                     "that we don't manage!");
 687         } else if (entry->bge_inuse == 0) {
 688                 panic("bge_jref: buffer already free!");
 689         } else {
 690                 atomic_add_int(&entry->bge_inuse, 1);
 691         }
 692 }
 693
 694 /*
 695  * Release a jumbo buffer.
 696  */
 697 static void
 698 bge_jfree(void *arg)
 699 {
 700         struct bge_jslot *entry = (struct bge_jslot *)arg;
 701         struct bge_softc *sc = entry->bge_sc;
 702
 703         if (sc == NULL)
 704                 panic("bge_jfree: can't find softc pointer!");
 705
 706         if (&sc->bge_cdata.bge_jslots[entry->bge_slot] != entry) {
 707                 panic("bge_jfree: asked to free buffer that we don't manage!");
 708         } else if (entry->bge_inuse == 0) {
 709                 panic("bge_jfree: buffer already free!");
 710         } else {
 711                 /*
 712                  * Possible MP race to 0, use the serializer.  The atomic insn
 713                  * is still needed for races against bge_jref().
 714                  */
 715                 lwkt_serialize_enter(&sc->bge_jslot_serializer);
 716                 atomic_subtract_int(&entry->bge_inuse, 1);
 717                 if (entry->bge_inuse == 0) {
 718                         SLIST_INSERT_HEAD(&sc->bge_jfree_listhead,
 719                                           entry, jslot_link);
 720                 }
 721                 lwkt_serialize_exit(&sc->bge_jslot_serializer);
 722         }
 723 }
 724
 725
 726 /*
 727  * Intialize a standard receive ring descriptor.
 728  */
 729 static int
 730 bge_newbuf_std(struct bge_softc *sc, int i, struct mbuf *m)
 731 {
 732         struct mbuf *m_new = NULL;
 733         struct bge_rx_bd *r;
 734
 735         if (m == NULL) {
 736                 m_new = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR);
 737                 if (m_new == NULL)
 738                         return (ENOBUFS);
 739                 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
 740         } else {
 741                 m_new = m;
 742                 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
 743                 m_new->m_data = m_new->m_ext.ext_buf;
 744         }
 745
 746         if (!sc->bge_rx_alignment_bug)
 747                 m_adj(m_new, ETHER_ALIGN);
 748         sc->bge_cdata.bge_rx_std_chain[i] = m_new;
 749         r = &sc->bge_rdata->bge_rx_std_ring[i];
 750         BGE_HOSTADDR(r->bge_addr, vtophys(mtod(m_new, caddr_t)));
 751         r->bge_flags = BGE_RXBDFLAG_END;
 752         r->bge_len = m_new->m_len;
 753         r->bge_idx = i;
 754
 755         return(0);
 756 }
 757
 758 /*
 759  * Initialize a jumbo receive ring descriptor. This allocates
 760  * a jumbo buffer from the pool managed internally by the driver.
 761  */
 762 static int
 763 bge_newbuf_jumbo(struct bge_softc *sc, int i, struct mbuf *m)
 764 {
 765         struct mbuf *m_new = NULL;
 766         struct bge_rx_bd *r;
 767
 768         if (m == NULL) {
 769                 struct bge_jslot *buf;
 770
 771                 /* Allocate the mbuf. */
 772                 MGETHDR(m_new, MB_DONTWAIT, MT_DATA);
 773                 if (m_new == NULL)
 774                         return(ENOBUFS);
 775
 776                 /* Allocate the jumbo buffer */
 777                 buf = bge_jalloc(sc);
 778                 if (buf == NULL) {
 779                         m_freem(m_new);
 780                         if_printf(&sc->arpcom.ac_if, "jumbo allocation failed "
 781                             "-- packet dropped!\n");
 782                         return(ENOBUFS);
 783                 }
 784
 785                 /* Attach the buffer to the mbuf. */
 786                 m_new->m_ext.ext_arg = buf;
 787                 m_new->m_ext.ext_buf = buf->bge_buf;
 788                 m_new->m_ext.ext_free = bge_jfree;
 789                 m_new->m_ext.ext_ref = bge_jref;
 790                 m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN;
 791
 792                 m_new->m_data = m_new->m_ext.ext_buf;
 793                 m_new->m_flags |= M_EXT;
 794                 m_new->m_len = m_new->m_pkthdr.len = m_new->m_ext.ext_size;
 795         } else {
 796                 m_new = m;
 797                 m_new->m_data = m_new->m_ext.ext_buf;
 798                 m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN;
 799         }
 800
 801         if (!sc->bge_rx_alignment_bug)
 802                 m_adj(m_new, ETHER_ALIGN);
 803         /* Set up the descriptor. */
 804         r = &sc->bge_rdata->bge_rx_jumbo_ring[i];
 805         sc->bge_cdata.bge_rx_jumbo_chain[i] = m_new;
 806         BGE_HOSTADDR(r->bge_addr, vtophys(mtod(m_new, caddr_t)));
 807         r->bge_flags = BGE_RXBDFLAG_END|BGE_RXBDFLAG_JUMBO_RING;
 808         r->bge_len = m_new->m_len;
 809         r->bge_idx = i;
 810
 811         return(0);
 812 }
 813
 814 /*
 815  * The standard receive ring has 512 entries in it. At 2K per mbuf cluster,
 816  * that's 1MB or memory, which is a lot. For now, we fill only the first
 817  * 256 ring entries and hope that our CPU is fast enough to keep up with
 818  * the NIC.
 819  */
 820 static int
 821 bge_init_rx_ring_std(struct bge_softc *sc)
 822 {
 823         int i;
 824
 825         for (i = 0; i < BGE_SSLOTS; i++) {
 826                 if (bge_newbuf_std(sc, i, NULL) == ENOBUFS)
 827                         return(ENOBUFS);
 828         };
 829
 830         sc->bge_std = i - 1;
 831         CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
 832
 833         return(0);
 834 }
 835
 836 static void
 837 bge_free_rx_ring_std(struct bge_softc *sc)
 838 {
 839         int i;
 840
 841         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
 842                 if (sc->bge_cdata.bge_rx_std_chain[i] != NULL) {
 843                         m_freem(sc->bge_cdata.bge_rx_std_chain[i]);
 844                         sc->bge_cdata.bge_rx_std_chain[i] = NULL;
 845                 }
 846                 bzero(&sc->bge_rdata->bge_rx_std_ring[i],
 847                     sizeof(struct bge_rx_bd));
 848         }
 849 }
 850
 851 static int
 852 bge_init_rx_ring_jumbo(struct bge_softc *sc)
 853 {
 854         int i;
 855         struct bge_rcb *rcb;
 856
 857         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 858                 if (bge_newbuf_jumbo(sc, i, NULL) == ENOBUFS)
 859                         return(ENOBUFS);
 860         };
 861
 862         sc->bge_jumbo = i - 1;
 863
 864         rcb = &sc->bge_rdata->bge_info.bge_jumbo_rx_rcb;
 865         rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0, 0);
 866         CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
 867
 868         CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
 869
 870         return(0);
 871 }
 872
 873 static void
 874 bge_free_rx_ring_jumbo(struct bge_softc *sc)
 875 {
 876         int i;
 877
 878         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 879                 if (sc->bge_cdata.bge_rx_jumbo_chain[i] != NULL) {
 880                         m_freem(sc->bge_cdata.bge_rx_jumbo_chain[i]);
 881                         sc->bge_cdata.bge_rx_jumbo_chain[i] = NULL;
 882                 }
 883                 bzero(&sc->bge_rdata->bge_rx_jumbo_ring[i],
 884                     sizeof(struct bge_rx_bd));
 885         }
 886 }
 887
 888 static void
 889 bge_free_tx_ring(struct bge_softc *sc)
 890 {
 891         int i;
 892
 893         if (sc->bge_rdata->bge_tx_ring == NULL)
 894                 return;
 895
 896         for (i = 0; i < BGE_TX_RING_CNT; i++) {
 897                 if (sc->bge_cdata.bge_tx_chain[i] != NULL) {
 898                         m_freem(sc->bge_cdata.bge_tx_chain[i]);
 899                         sc->bge_cdata.bge_tx_chain[i] = NULL;
 900                 }
 901                 bzero(&sc->bge_rdata->bge_tx_ring[i],
 902                     sizeof(struct bge_tx_bd));
 903         }
 904 }
 905
 906 static int
 907 bge_init_tx_ring(struct bge_softc *sc)
 908 {
 909         sc->bge_txcnt = 0;
 910         sc->bge_tx_saved_considx = 0;
 911
 912         CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, 0);
 913         /* 5700 b2 errata */
 914         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
 915                 CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, 0);
 916
 917         CSR_WRITE_4(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
 918         /* 5700 b2 errata */
 919         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
 920                 CSR_WRITE_4(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
 921
 922         return(0);
 923 }
 924
 925 static void
 926 bge_setmulti(struct bge_softc *sc)
 927 {
 928         struct ifnet *ifp;
 929         struct ifmultiaddr *ifma;
 930         uint32_t hashes[4] = { 0, 0, 0, 0 };
 931         int h, i;
 932
 933         ifp = &sc->arpcom.ac_if;
 934
 935         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
 936                 for (i = 0; i < 4; i++)
 937                         CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0xFFFFFFFF);
 938                 return;
 939         }
 940
 941         /* First, zot all the existing filters. */
 942         for (i = 0; i < 4; i++)
 943                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0);
 944
 945         /* Now program new ones. */
 946         LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
 947                 if (ifma->ifma_addr->sa_family != AF_LINK)
 948                         continue;
 949                 h = ether_crc32_le(
 950                     LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
 951                     ETHER_ADDR_LEN) & 0x7f;
 952                 hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F);
 953         }
 954
 955         for (i = 0; i < 4; i++)
 956                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]);
 957 }
 958
 959 /*
 960  * Do endian, PCI and DMA initialization. Also check the on-board ROM
 961  * self-test results.
 962  */
 963 static int
 964 bge_chipinit(struct bge_softc *sc)
 965 {
 966         int i;
 967         uint32_t dma_rw_ctl;
 968
 969         /* Set endianness before we access any non-PCI registers. */
 970 #if BYTE_ORDER == BIG_ENDIAN
 971         pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL,
 972             BGE_BIGENDIAN_INIT, 4);
 973 #else
 974         pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL,
 975             BGE_LITTLEENDIAN_INIT, 4);
 976 #endif
 977
 978         /*
 979          * Check the 'ROM failed' bit on the RX CPU to see if
 980          * self-tests passed.
 981          */
 982         if (CSR_READ_4(sc, BGE_RXCPU_MODE) & BGE_RXCPUMODE_ROMFAIL) {
 983                 if_printf(&sc->arpcom.ac_if,
 984                           "RX CPU self-diagnostics failed!\n");
 985                 return(ENODEV);
 986         }
 987
 988         /* Clear the MAC control register */
 989         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
 990
 991         /*
 992          * Clear the MAC statistics block in the NIC's
 993          * internal memory.
 994          */
 995         for (i = BGE_STATS_BLOCK;
 996             i < BGE_STATS_BLOCK_END + 1; i += sizeof(uint32_t))
 997                 BGE_MEMWIN_WRITE(sc, i, 0);
 998
 999         for (i = BGE_STATUS_BLOCK;
1000             i < BGE_STATUS_BLOCK_END + 1; i += sizeof(uint32_t))
1001                 BGE_MEMWIN_WRITE(sc, i, 0);
1002
1003         /* Set up the PCI DMA control register. */
1004         if (sc->bge_pcie) {
1005                 /* PCI Express */
1006                 dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1007                     (0xf << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1008                     (0x2 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
1009         } else if (pci_read_config(sc->bge_dev, BGE_PCI_PCISTATE, 4) &
1010                    BGE_PCISTATE_PCI_BUSMODE) {
1011                 /* Conventional PCI bus */
1012                 dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1013                     (0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1014                     (0x7 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
1015                     (0x0F);
1016         } else {
1017                 /* PCI-X bus */
1018                 /*
1019                  * The 5704 uses a different encoding of read/write
1020                  * watermarks.
1021                  */
1022                 if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
1023                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1024                             (0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1025                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
1026                 else
1027                         dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
1028                             (0x3 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
1029                             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
1030                             (0x0F);
1031
1032                 /*
1033                  * 5703 and 5704 need ONEDMA_AT_ONCE as a workaround
1034                  * for hardware bugs.
1035                  */
1036                 if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
1037                     sc->bge_asicrev == BGE_ASICREV_BCM5704) {
1038                         uint32_t tmp;
1039
1040                         tmp = CSR_READ_4(sc, BGE_PCI_CLKCTL) & 0x1f;
1041                         if (tmp == 0x6 || tmp == 0x7)
1042                                 dma_rw_ctl |= BGE_PCIDMARWCTL_ONEDMA_ATONCE;
1043                 }
1044         }
1045
1046         if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
1047             sc->bge_asicrev == BGE_ASICREV_BCM5704 ||
1048             sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
1049             sc->bge_asicrev == BGE_ASICREV_BCM5750)
1050                 dma_rw_ctl &= ~BGE_PCIDMARWCTL_MINDMA;
1051         pci_write_config(sc->bge_dev, BGE_PCI_DMA_RW_CTL, dma_rw_ctl, 4);
1052
1053         /*
1054          * Set up general mode register.
1055          */
1056         CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_MODECTL_WORDSWAP_NONFRAME|
1057             BGE_MODECTL_BYTESWAP_DATA|BGE_MODECTL_WORDSWAP_DATA|
1058             BGE_MODECTL_MAC_ATTN_INTR|BGE_MODECTL_HOST_SEND_BDS|
1059             BGE_MODECTL_TX_NO_PHDR_CSUM|BGE_MODECTL_RX_NO_PHDR_CSUM);
1060
1061         /*
1062          * Disable memory write invalidate.  Apparently it is not supported
1063          * properly by these devices.
1064          */
1065         PCI_CLRBIT(sc->bge_dev, BGE_PCI_CMD, PCIM_CMD_MWIEN, 4);
1066
1067         /* Set the timer prescaler (always 66Mhz) */
1068         CSR_WRITE_4(sc, BGE_MISC_CFG, 65 << 1/*BGE_32BITTIME_66MHZ*/);
1069
1070         return(0);
1071 }
1072
1073 static int
1074 bge_blockinit(struct bge_softc *sc)
1075 {
1076         struct bge_rcb *rcb;
1077         volatile struct bge_rcb *vrcb;
1078         int i;
1079
1080         /*
1081          * Initialize the memory window pointer register so that
1082          * we can access the first 32K of internal NIC RAM. This will
1083          * allow us to set up the TX send ring RCBs and the RX return
1084          * ring RCBs, plus other things which live in NIC memory.
1085          */
1086         CSR_WRITE_4(sc, BGE_PCI_MEMWIN_BASEADDR, 0);
1087
1088         /* Note: the BCM5704 has a smaller mbuf space than other chips. */
1089
1090         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1091             sc->bge_asicrev != BGE_ASICREV_BCM5750) {
1092                 /* Configure mbuf memory pool */
1093                 if (sc->bge_extram) {
1094                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR,
1095                             BGE_EXT_SSRAM);
1096                         if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
1097                                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000);
1098                         else
1099                                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000);
1100                 } else {
1101                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR,
1102                             BGE_BUFFPOOL_1);
1103                         if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
1104                                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000);
1105                         else
1106                                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000);
1107                 }
1108
1109                 /* Configure DMA resource pool */
1110                 CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_BASEADDR,
1111                     BGE_DMA_DESCRIPTORS);
1112                 CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LEN, 0x2000);
1113         }
1114
1115         /* Configure mbuf pool watermarks */
1116         if (sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
1117             sc->bge_asicrev == BGE_ASICREV_BCM5750) {
1118                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1119                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10);
1120         } else {
1121                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x50);
1122                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x20);
1123         }
1124         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
1125
1126         /* Configure DMA resource watermarks */
1127         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5);
1128         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10);
1129
1130         /* Enable buffer manager */
1131         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1132             sc->bge_asicrev != BGE_ASICREV_BCM5750) {
1133                 CSR_WRITE_4(sc, BGE_BMAN_MODE,
1134                     BGE_BMANMODE_ENABLE|BGE_BMANMODE_LOMBUF_ATTN);
1135
1136                 /* Poll for buffer manager start indication */
1137                 for (i = 0; i < BGE_TIMEOUT; i++) {
1138                         if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE)
1139                                 break;
1140                         DELAY(10);
1141                 }
1142
1143                 if (i == BGE_TIMEOUT) {
1144                         if_printf(&sc->arpcom.ac_if,
1145                                   "buffer manager failed to start\n");
1146                         return(ENXIO);
1147                 }
1148         }
1149
1150         /* Enable flow-through queues */
1151         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
1152         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
1153
1154         /* Wait until queue initialization is complete */
1155         for (i = 0; i < BGE_TIMEOUT; i++) {
1156                 if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0)
1157                         break;
1158                 DELAY(10);
1159         }
1160
1161         if (i == BGE_TIMEOUT) {
1162                 if_printf(&sc->arpcom.ac_if,
1163                           "flow-through queue init failed\n");
1164                 return(ENXIO);
1165         }
1166
1167         /* Initialize the standard RX ring control block */
1168         rcb = &sc->bge_rdata->bge_info.bge_std_rx_rcb;
1169         BGE_HOSTADDR(rcb->bge_hostaddr,
1170             vtophys(&sc->bge_rdata->bge_rx_std_ring));
1171         if (sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
1172             sc->bge_asicrev == BGE_ASICREV_BCM5750)
1173                 rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0);
1174         else
1175                 rcb->bge_maxlen_flags =
1176                     BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN, 0);
1177         if (sc->bge_extram)
1178                 rcb->bge_nicaddr = BGE_EXT_STD_RX_RINGS;
1179         else
1180                 rcb->bge_nicaddr = BGE_STD_RX_RINGS;
1181         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi);
1182         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo);
1183         CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
1184         CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr);
1185
1186         /*
1187          * Initialize the jumbo RX ring control block
1188          * We set the 'ring disabled' bit in the flags
1189          * field until we're actually ready to start
1190          * using this ring (i.e. once we set the MTU
1191          * high enough to require it).
1192          */
1193         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1194             sc->bge_asicrev != BGE_ASICREV_BCM5750) {
1195                 rcb = &sc->bge_rdata->bge_info.bge_jumbo_rx_rcb;
1196                 BGE_HOSTADDR(rcb->bge_hostaddr,
1197                     vtophys(&sc->bge_rdata->bge_rx_jumbo_ring));
1198                 rcb->bge_maxlen_flags =
1199                     BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN,
1200                     BGE_RCB_FLAG_RING_DISABLED);
1201                 if (sc->bge_extram)
1202                         rcb->bge_nicaddr = BGE_EXT_JUMBO_RX_RINGS;
1203                 else
1204                         rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS;
1205                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI,
1206                     rcb->bge_hostaddr.bge_addr_hi);
1207                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO,
1208                     rcb->bge_hostaddr.bge_addr_lo);
1209                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS,
1210                     rcb->bge_maxlen_flags);
1211                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr);
1212
1213                 /* Set up dummy disabled mini ring RCB */
1214                 rcb = &sc->bge_rdata->bge_info.bge_mini_rx_rcb;
1215                 rcb->bge_maxlen_flags =
1216                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
1217                 CSR_WRITE_4(sc, BGE_RX_MINI_RCB_MAXLEN_FLAGS,
1218                     rcb->bge_maxlen_flags);
1219         }
1220
1221         /*
1222          * Set the BD ring replentish thresholds. The recommended
1223          * values are 1/8th the number of descriptors allocated to
1224          * each ring.
1225          */
1226         CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, BGE_STD_RX_RING_CNT/8);
1227         CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH, BGE_JUMBO_RX_RING_CNT/8);
1228
1229         /*
1230          * Disable all unused send rings by setting the 'ring disabled'
1231          * bit in the flags field of all the TX send ring control blocks.
1232          * These are located in NIC memory.
1233          */
1234         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1235             BGE_SEND_RING_RCB);
1236         for (i = 0; i < BGE_TX_RINGS_EXTSSRAM_MAX; i++) {
1237                 vrcb->bge_maxlen_flags =
1238                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
1239                 vrcb->bge_nicaddr = 0;
1240                 vrcb++;
1241         }
1242
1243         /* Configure TX RCB 0 (we use only the first ring) */
1244         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1245             BGE_SEND_RING_RCB);
1246         vrcb->bge_hostaddr.bge_addr_hi = 0;
1247         BGE_HOSTADDR(vrcb->bge_hostaddr, vtophys(&sc->bge_rdata->bge_tx_ring));
1248         vrcb->bge_nicaddr = BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT);
1249         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1250             sc->bge_asicrev != BGE_ASICREV_BCM5750)
1251                 vrcb->bge_maxlen_flags =
1252                     BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0);
1253
1254         /* Disable all unused RX return rings */
1255         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1256             BGE_RX_RETURN_RING_RCB);
1257         for (i = 0; i < BGE_RX_RINGS_MAX; i++) {
1258                 vrcb->bge_hostaddr.bge_addr_hi = 0;
1259                 vrcb->bge_hostaddr.bge_addr_lo = 0;
1260                 vrcb->bge_maxlen_flags =
1261                     BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt,
1262                     BGE_RCB_FLAG_RING_DISABLED);
1263                 vrcb->bge_nicaddr = 0;
1264                 CSR_WRITE_4(sc, BGE_MBX_RX_CONS0_LO +
1265                     (i * (sizeof(uint64_t))), 0);
1266                 vrcb++;
1267         }
1268
1269         /* Initialize RX ring indexes */
1270         CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, 0);
1271         CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0);
1272         CSR_WRITE_4(sc, BGE_MBX_RX_MINI_PROD_LO, 0);
1273
1274         /*
1275          * Set up RX return ring 0
1276          * Note that the NIC address for RX return rings is 0x00000000.
1277          * The return rings live entirely within the host, so the
1278          * nicaddr field in the RCB isn't used.
1279          */
1280         vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
1281             BGE_RX_RETURN_RING_RCB);
1282         vrcb->bge_hostaddr.bge_addr_hi = 0;
1283         BGE_HOSTADDR(vrcb->bge_hostaddr,
1284             vtophys(&sc->bge_rdata->bge_rx_return_ring));
1285         vrcb->bge_nicaddr = 0x00000000;
1286         vrcb->bge_maxlen_flags =
1287             BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt, 0);
1288
1289         /* Set random backoff seed for TX */
1290         CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
1291             sc->arpcom.ac_enaddr[0] + sc->arpcom.ac_enaddr[1] +
1292             sc->arpcom.ac_enaddr[2] + sc->arpcom.ac_enaddr[3] +
1293             sc->arpcom.ac_enaddr[4] + sc->arpcom.ac_enaddr[5] +
1294             BGE_TX_BACKOFF_SEED_MASK);
1295
1296         /* Set inter-packet gap */
1297         CSR_WRITE_4(sc, BGE_TX_LENGTHS, 0x2620);
1298
1299         /*
1300          * Specify which ring to use for packets that don't match
1301          * any RX rules.
1302          */
1303         CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08);
1304
1305         /*
1306          * Configure number of RX lists. One interrupt distribution
1307          * list, sixteen active lists, one bad frames class.
1308          */
1309         CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181);
1310
1311         /* Inialize RX list placement stats mask. */
1312         CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF);
1313         CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1);
1314
1315         /* Disable host coalescing until we get it set up */
1316         CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000);
1317
1318         /* Poll to make sure it's shut down. */
1319         for (i = 0; i < BGE_TIMEOUT; i++) {
1320                 if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE))
1321                         break;
1322                 DELAY(10);
1323         }
1324
1325         if (i == BGE_TIMEOUT) {
1326                 if_printf(&sc->arpcom.ac_if,
1327                           "host coalescing engine failed to idle\n");
1328                 return(ENXIO);
1329         }
1330
1331         /* Set up host coalescing defaults */
1332         CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bge_rx_coal_ticks);
1333         CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bge_tx_coal_ticks);
1334         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bge_rx_max_coal_bds);
1335         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bge_tx_max_coal_bds);
1336         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1337             sc->bge_asicrev != BGE_ASICREV_BCM5750) {
1338                 CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS_INT, 0);
1339                 CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS_INT, 0);
1340         }
1341         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, 0);
1342         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, 0);
1343
1344         /* Set up address of statistics block */
1345         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1346             sc->bge_asicrev != BGE_ASICREV_BCM5750) {
1347                 CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_HI, 0);
1348                 CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_LO,
1349                     vtophys(&sc->bge_rdata->bge_info.bge_stats));
1350
1351                 CSR_WRITE_4(sc, BGE_HCC_STATS_BASEADDR, BGE_STATS_BLOCK);
1352                 CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_BASEADDR, BGE_STATUS_BLOCK);
1353                 CSR_WRITE_4(sc, BGE_HCC_STATS_TICKS, sc->bge_stat_ticks);
1354         }
1355
1356         /* Set up address of status block */
1357         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI, 0);
1358         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO,
1359             vtophys(&sc->bge_rdata->bge_status_block));
1360
1361         sc->bge_rdata->bge_status_block.bge_idx[0].bge_rx_prod_idx = 0;
1362         sc->bge_rdata->bge_status_block.bge_idx[0].bge_tx_cons_idx = 0;
1363
1364         /* Turn on host coalescing state machine */
1365         CSR_WRITE_4(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
1366
1367         /* Turn on RX BD completion state machine and enable attentions */
1368         CSR_WRITE_4(sc, BGE_RBDC_MODE,
1369             BGE_RBDCMODE_ENABLE|BGE_RBDCMODE_ATTN);
1370
1371         /* Turn on RX list placement state machine */
1372         CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
1373
1374         /* Turn on RX list selector state machine. */
1375         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1376             sc->bge_asicrev != BGE_ASICREV_BCM5750)
1377                 CSR_WRITE_4(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
1378
1379         /* Turn on DMA, clear stats */
1380         CSR_WRITE_4(sc, BGE_MAC_MODE, BGE_MACMODE_TXDMA_ENB|
1381             BGE_MACMODE_RXDMA_ENB|BGE_MACMODE_RX_STATS_CLEAR|
1382             BGE_MACMODE_TX_STATS_CLEAR|BGE_MACMODE_RX_STATS_ENB|
1383             BGE_MACMODE_TX_STATS_ENB|BGE_MACMODE_FRMHDR_DMA_ENB|
1384             (sc->bge_tbi ? BGE_PORTMODE_TBI : BGE_PORTMODE_MII));
1385
1386         /* Set misc. local control, enable interrupts on attentions */
1387         CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_ONATTN);
1388
1389 #ifdef notdef
1390         /* Assert GPIO pins for PHY reset */
1391         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0|
1392             BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUT2);
1393         BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0|
1394             BGE_MLC_MISCIO_OUTEN1|BGE_MLC_MISCIO_OUTEN2);
1395 #endif
1396
1397         /* Turn on DMA completion state machine */
1398         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1399             sc->bge_asicrev != BGE_ASICREV_BCM5750)
1400                 CSR_WRITE_4(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
1401
1402         /* Turn on write DMA state machine */
1403         CSR_WRITE_4(sc, BGE_WDMA_MODE,
1404             BGE_WDMAMODE_ENABLE|BGE_WDMAMODE_ALL_ATTNS);
1405
1406         /* Turn on read DMA state machine */
1407         CSR_WRITE_4(sc, BGE_RDMA_MODE,
1408             BGE_RDMAMODE_ENABLE|BGE_RDMAMODE_ALL_ATTNS);
1409
1410         /* Turn on RX data completion state machine */
1411         CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
1412
1413         /* Turn on RX BD initiator state machine */
1414         CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
1415
1416         /* Turn on RX data and RX BD initiator state machine */
1417         CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE);
1418
1419         /* Turn on Mbuf cluster free state machine */
1420         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1421             sc->bge_asicrev != BGE_ASICREV_BCM5750)
1422                 CSR_WRITE_4(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
1423
1424         /* Turn on send BD completion state machine */
1425         CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
1426
1427         /* Turn on send data completion state machine */
1428         CSR_WRITE_4(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
1429
1430         /* Turn on send data initiator state machine */
1431         CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
1432
1433         /* Turn on send BD initiator state machine */
1434         CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
1435
1436         /* Turn on send BD selector state machine */
1437         CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
1438
1439         CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF);
1440         CSR_WRITE_4(sc, BGE_SDI_STATS_CTL,
1441             BGE_SDISTATSCTL_ENABLE|BGE_SDISTATSCTL_FASTER);
1442
1443         /* ack/clear link change events */
1444         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1445             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1446             BGE_MACSTAT_LINK_CHANGED);
1447
1448         /* Enable PHY auto polling (for MII/GMII only) */
1449         if (sc->bge_tbi) {
1450                 CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK);
1451         } else {
1452                 BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL|10<<16);
1453                 if (sc->bge_asicrev == BGE_ASICREV_BCM5700)
1454                         CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
1455                             BGE_EVTENB_MI_INTERRUPT);
1456         }
1457
1458         /* Enable link state change attentions. */
1459         BGE_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED);
1460
1461         return(0);
1462 }
1463
1464 /*
1465  * Probe for a Broadcom chip. Check the PCI vendor and device IDs
1466  * against our list and return its name if we find a match. Note
1467  * that since the Broadcom controller contains VPD support, we
1468  * can get the device name string from the controller itself instead
1469  * of the compiled-in string. This is a little slow, but it guarantees
1470  * we'll always announce the right product name.
1471  */
1472 static int
1473 bge_probe(device_t dev)
1474 {
1475         struct bge_softc *sc;
1476         struct bge_type *t;
1477         char *descbuf;
1478         uint16_t product, vendor;
1479
1480         product = pci_get_device(dev);
1481         vendor = pci_get_vendor(dev);
1482
1483         for (t = bge_devs; t->bge_name != NULL; t++) {
1484                 if (vendor == t->bge_vid && product == t->bge_did)
1485                         break;
1486         }
1487
1488         if (t->bge_name == NULL)
1489                 return(ENXIO);
1490
1491         sc = device_get_softc(dev);
1492 #ifdef notdef
1493         sc->bge_dev = dev;
1494
1495         bge_vpd_read(sc);
1496         device_set_desc(dev, sc->bge_vpd_prodname);
1497 #endif
1498         descbuf = malloc(BGE_DEVDESC_MAX, M_TEMP, M_WAITOK);
1499         snprintf(descbuf, BGE_DEVDESC_MAX, "%s, ASIC rev. %#04x", t->bge_name,
1500             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) >> 16);
1501         device_set_desc_copy(dev, descbuf);
1502         if (pci_get_subvendor(dev) == PCI_VENDOR_DELL)
1503                 sc->bge_no_3_led = 1;
1504         free(descbuf, M_TEMP);
1505         return(0);
1506 }
1507
1508 static int
1509 bge_attach(device_t dev)
1510 {
1511         struct ifnet *ifp;
1512         struct bge_softc *sc;
1513         uint32_t hwcfg = 0;
1514         uint32_t mac_addr = 0;
1515         int error = 0, rid;
1516         uint8_t ether_addr[ETHER_ADDR_LEN];
1517
1518         sc = device_get_softc(dev);
1519         sc->bge_dev = dev;
1520         callout_init(&sc->bge_stat_timer);
1521         lwkt_serialize_init(&sc->bge_jslot_serializer);
1522
1523         /*
1524          * Map control/status registers.
1525          */
1526         pci_enable_busmaster(dev);
1527
1528         rid = BGE_PCI_BAR0;
1529         sc->bge_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1530             RF_ACTIVE);
1531
1532         if (sc->bge_res == NULL) {
1533                 device_printf(dev, "couldn't map memory\n");
1534                 error = ENXIO;
1535                 return(error);
1536         }
1537
1538         sc->bge_btag = rman_get_bustag(sc->bge_res);
1539         sc->bge_bhandle = rman_get_bushandle(sc->bge_res);
1540         sc->bge_vhandle = (vm_offset_t)rman_get_virtual(sc->bge_res);
1541
1542         /* Allocate interrupt */
1543         rid = 0;
1544
1545         sc->bge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
1546             RF_SHAREABLE | RF_ACTIVE);
1547
1548         if (sc->bge_irq == NULL) {
1549                 device_printf(dev, "couldn't map interrupt\n");
1550                 error = ENXIO;
1551                 goto fail;
1552         }
1553
1554         /* Save ASIC rev. */
1555         sc->bge_chipid =
1556             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) &
1557             BGE_PCIMISCCTL_ASICREV;
1558         sc->bge_asicrev = BGE_ASICREV(sc->bge_chipid);
1559         sc->bge_chiprev = BGE_CHIPREV(sc->bge_chipid);
1560
1561         /*
1562          * Treat the 5714 like the 5750 until we have more info
1563          * on this chip.
1564          */
1565         if (sc->bge_asicrev == BGE_ASICREV_BCM5714)
1566                 sc->bge_asicrev = BGE_ASICREV_BCM5750;
1567
1568         /*
1569          * XXX: Broadcom Linux driver.  Not in specs or eratta.
1570          * PCI-Express?
1571          */
1572         if (sc->bge_asicrev == BGE_ASICREV_BCM5750) {
1573                 uint32_t v;
1574
1575                 v = pci_read_config(dev, BGE_PCI_MSI_CAPID, 4);
1576                 if (((v >> 8) & 0xff) == BGE_PCIE_MSI_CAPID) {
1577                         v = pci_read_config(dev, BGE_PCIE_MSI_CAPID, 4);
1578                         if ((v & 0xff) == BGE_PCIE_MSI_CAPID_VAL)
1579                                 sc->bge_pcie = 1;
1580                 }
1581         }
1582
1583         ifp = &sc->arpcom.ac_if;
1584         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1585
1586         /* Try to reset the chip. */
1587         bge_reset(sc);
1588
1589         if (bge_chipinit(sc)) {
1590                 device_printf(dev, "chip initialization failed\n");
1591                 error = ENXIO;
1592                 goto fail;
1593         }
1594
1595         /*
1596          * Get station address from the EEPROM.
1597          */
1598         mac_addr = bge_readmem_ind(sc, 0x0c14);
1599         if ((mac_addr >> 16) == 0x484b) {
1600                 ether_addr[0] = (uint8_t)(mac_addr >> 8);
1601                 ether_addr[1] = (uint8_t)mac_addr;
1602                 mac_addr = bge_readmem_ind(sc, 0x0c18);
1603                 ether_addr[2] = (uint8_t)(mac_addr >> 24);
1604                 ether_addr[3] = (uint8_t)(mac_addr >> 16);
1605                 ether_addr[4] = (uint8_t)(mac_addr >> 8);
1606                 ether_addr[5] = (uint8_t)mac_addr;
1607         } else if (bge_read_eeprom(sc, ether_addr,
1608             BGE_EE_MAC_OFFSET + 2, ETHER_ADDR_LEN)) {
1609                 device_printf(dev, "failed to read station address\n");
1610                 error = ENXIO;
1611                 goto fail;
1612         }
1613
1614         /* Allocate the general information block and ring buffers. */
1615         sc->bge_rdata = contigmalloc(sizeof(struct bge_ring_data), M_DEVBUF,
1616             M_WAITOK, 0, 0xffffffff, PAGE_SIZE, 0);
1617
1618         if (sc->bge_rdata == NULL) {
1619                 error = ENXIO;
1620                 device_printf(dev, "no memory for list buffers!\n");
1621                 goto fail;
1622         }
1623
1624         bzero(sc->bge_rdata, sizeof(struct bge_ring_data));
1625
1626         /*
1627          * Try to allocate memory for jumbo buffers.
1628          * The 5705/5750 does not appear to support jumbo frames.
1629          */
1630         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1631             sc->bge_asicrev != BGE_ASICREV_BCM5750) {
1632                 if (bge_alloc_jumbo_mem(sc)) {
1633                         device_printf(dev, "jumbo buffer allocation failed\n");
1634                         error = ENXIO;
1635                         goto fail;
1636                 }
1637         }
1638
1639         /* Set default tuneable values. */
1640         sc->bge_stat_ticks = BGE_TICKS_PER_SEC;
1641         sc->bge_rx_coal_ticks = 150;
1642         sc->bge_tx_coal_ticks = 150;
1643         sc->bge_rx_max_coal_bds = 64;
1644         sc->bge_tx_max_coal_bds = 128;
1645
1646         /* 5705/5750 limits RX return ring to 512 entries. */
1647         if (sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
1648             sc->bge_asicrev == BGE_ASICREV_BCM5750)
1649                 sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT_5705;
1650         else
1651                 sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT;
1652
1653         /* Set up ifnet structure */
1654         ifp->if_softc = sc;
1655         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1656         ifp->if_ioctl = bge_ioctl;
1657         ifp->if_start = bge_start;
1658         ifp->if_watchdog = bge_watchdog;
1659         ifp->if_init = bge_init;
1660         ifp->if_mtu = ETHERMTU;
1661         ifq_set_maxlen(&ifp->if_snd, BGE_TX_RING_CNT - 1);
1662         ifq_set_ready(&ifp->if_snd);
1663         ifp->if_hwassist = BGE_CSUM_FEATURES;
1664         ifp->if_capabilities = IFCAP_HWCSUM;
1665         ifp->if_capenable = ifp->if_capabilities;
1666
1667         /*
1668          * Figure out what sort of media we have by checking the
1669          * hardware config word in the first 32k of NIC internal memory,
1670          * or fall back to examining the EEPROM if necessary.
1671          * Note: on some BCM5700 cards, this value appears to be unset.
1672          * If that's the case, we have to rely on identifying the NIC
1673          * by its PCI subsystem ID, as we do below for the SysKonnect
1674          * SK-9D41.
1675          */
1676         if (bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER)
1677                 hwcfg = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG);
1678         else {
1679                 bge_read_eeprom(sc, (caddr_t)&hwcfg,
1680                                 BGE_EE_HWCFG_OFFSET, sizeof(hwcfg));
1681                 hwcfg = ntohl(hwcfg);
1682         }
1683
1684         if ((hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER)
1685                 sc->bge_tbi = 1;
1686
1687         /* The SysKonnect SK-9D41 is a 1000baseSX card. */
1688         if (pci_get_subvendor(dev) == PCI_PRODUCT_SCHNEIDERKOCH_SK_9D41)
1689                 sc->bge_tbi = 1;
1690
1691         if (sc->bge_tbi) {
1692                 ifmedia_init(&sc->bge_ifmedia, IFM_IMASK,
1693                     bge_ifmedia_upd, bge_ifmedia_sts);
1694                 ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_1000_SX, 0, NULL);
1695                 ifmedia_add(&sc->bge_ifmedia,
1696                     IFM_ETHER|IFM_1000_SX|IFM_FDX, 0, NULL);
1697                 ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
1698                 ifmedia_set(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO);
1699                 sc->bge_ifmedia.ifm_media = sc->bge_ifmedia.ifm_cur->ifm_media;
1700         } else {
1701                 /*
1702                  * Do transceiver setup.
1703                  */
1704                 if (mii_phy_probe(dev, &sc->bge_miibus,
1705                     bge_ifmedia_upd, bge_ifmedia_sts)) {
1706                         device_printf(dev, "MII without any PHY!\n");
1707                         error = ENXIO;
1708                         goto fail;
1709                 }
1710         }
1711
1712         /*
1713          * When using the BCM5701 in PCI-X mode, data corruption has
1714          * been observed in the first few bytes of some received packets.
1715          * Aligning the packet buffer in memory eliminates the corruption.
1716          * Unfortunately, this misaligns the packet payloads.  On platforms
1717          * which do not support unaligned accesses, we will realign the
1718          * payloads by copying the received packets.
1719          */
1720         switch (sc->bge_chipid) {
1721         case BGE_CHIPID_BCM5701_A0:
1722         case BGE_CHIPID_BCM5701_B0:
1723         case BGE_CHIPID_BCM5701_B2:
1724         case BGE_CHIPID_BCM5701_B5:
1725                 /* If in PCI-X mode, work around the alignment bug. */
1726                 if ((pci_read_config(dev, BGE_PCI_PCISTATE, 4) &
1727                     (BGE_PCISTATE_PCI_BUSMODE | BGE_PCISTATE_PCI_BUSSPEED)) ==
1728                     BGE_PCISTATE_PCI_BUSSPEED)
1729                         sc->bge_rx_alignment_bug = 1;
1730                 break;
1731         }
1732
1733         /*
1734          * Call MI attach routine.
1735          */
1736         ether_ifattach(ifp, ether_addr, NULL);
1737
1738         error = bus_setup_intr(dev, sc->bge_irq, INTR_NETSAFE,
1739                                bge_intr, sc, &sc->bge_intrhand,
1740                                ifp->if_serializer);
1741         if (error) {
1742                 ether_ifdetach(ifp);
1743                 device_printf(dev, "couldn't set up irq\n");
1744                 goto fail;
1745         }
1746
1747         return(0);
1748
1749 fail:
1750         bge_detach(dev);
1751
1752         return(error);
1753 }
1754
1755 static int
1756 bge_detach(device_t dev)
1757 {
1758         struct bge_softc *sc = device_get_softc(dev);
1759         struct ifnet *ifp = &sc->arpcom.ac_if;
1760
1761         lwkt_serialize_enter(ifp->if_serializer);
1762
1763         if (device_is_attached(dev)) {
1764                 ether_ifdetach(ifp);
1765                 bge_stop(sc);
1766                 bge_reset(sc);
1767         }
1768
1769         if (sc->bge_tbi)
1770                 ifmedia_removeall(&sc->bge_ifmedia);
1771         if (sc->bge_miibus);
1772                 device_delete_child(dev, sc->bge_miibus);
1773         bus_generic_detach(dev);
1774
1775         bge_release_resources(sc);
1776
1777         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
1778             sc->bge_asicrev != BGE_ASICREV_BCM5750)
1779                 bge_free_jumbo_mem(sc);
1780
1781         lwkt_serialize_exit(ifp->if_serializer);
1782
1783         return(0);
1784 }
1785
1786 static void
1787 bge_release_resources(struct bge_softc *sc)
1788 {
1789         device_t dev;
1790
1791         dev = sc->bge_dev;
1792
1793         if (sc->bge_vpd_prodname != NULL)
1794                 free(sc->bge_vpd_prodname, M_DEVBUF);
1795
1796         if (sc->bge_vpd_readonly != NULL)
1797                 free(sc->bge_vpd_readonly, M_DEVBUF);
1798
1799         if (sc->bge_intrhand != NULL)
1800                 bus_teardown_intr(dev, sc->bge_irq, sc->bge_intrhand);
1801
1802         if (sc->bge_irq != NULL)
1803                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->bge_irq);
1804
1805         if (sc->bge_res != NULL)
1806                 bus_release_resource(dev, SYS_RES_MEMORY,
1807                     BGE_PCI_BAR0, sc->bge_res);
1808
1809         if (sc->bge_rdata != NULL)
1810                 contigfree(sc->bge_rdata, sizeof(struct bge_ring_data),
1811                            M_DEVBUF);
1812
1813         return;
1814 }
1815
1816 static void
1817 bge_reset(struct bge_softc *sc)
1818 {
1819         device_t dev;
1820         uint32_t cachesize, command, pcistate, reset;
1821         int i, val = 0;
1822
1823         dev = sc->bge_dev;
1824
1825         /* Save some important PCI state. */
1826         cachesize = pci_read_config(dev, BGE_PCI_CACHESZ, 4);
1827         command = pci_read_config(dev, BGE_PCI_CMD, 4);
1828         pcistate = pci_read_config(dev, BGE_PCI_PCISTATE, 4);
1829
1830         pci_write_config(dev, BGE_PCI_MISC_CTL,
1831             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
1832             BGE_PCIMISCCTL_ENDIAN_WORDSWAP|BGE_PCIMISCCTL_PCISTATE_RW, 4);
1833
1834         reset = BGE_MISCCFG_RESET_CORE_CLOCKS|(65<<1);
1835
1836         /* XXX: Broadcom Linux driver. */
1837         if (sc->bge_pcie) {
1838                 if (CSR_READ_4(sc, 0x7e2c) == 0x60)     /* PCIE 1.0 */
1839                         CSR_WRITE_4(sc, 0x7e2c, 0x20);
1840                 if (sc->bge_chipid != BGE_CHIPID_BCM5750_A0) {
1841                         /* Prevent PCIE link training during global reset */
1842                         CSR_WRITE_4(sc, BGE_MISC_CFG, (1<<29));
1843                         reset |= (1<<29);
1844                 }
1845         }
1846
1847         /* Issue global reset */
1848         bge_writereg_ind(sc, BGE_MISC_CFG, reset);
1849
1850         DELAY(1000);
1851
1852         /* XXX: Broadcom Linux driver. */
1853         if (sc->bge_pcie) {
1854                 if (sc->bge_chipid == BGE_CHIPID_BCM5750_A0) {
1855                         uint32_t v;
1856
1857                         DELAY(500000); /* wait for link training to complete */
1858                         v = pci_read_config(dev, 0xc4, 4);
1859                         pci_write_config(dev, 0xc4, v | (1<<15), 4);
1860                 }
1861                 /* Set PCIE max payload size and clear error status. */
1862                 pci_write_config(dev, 0xd8, 0xf5000, 4);
1863         }
1864
1865         /* Reset some of the PCI state that got zapped by reset */
1866         pci_write_config(dev, BGE_PCI_MISC_CTL,
1867             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
1868             BGE_PCIMISCCTL_ENDIAN_WORDSWAP|BGE_PCIMISCCTL_PCISTATE_RW, 4);
1869         pci_write_config(dev, BGE_PCI_CACHESZ, cachesize, 4);
1870         pci_write_config(dev, BGE_PCI_CMD, command, 4);
1871         bge_writereg_ind(sc, BGE_MISC_CFG, (65 << 1));
1872
1873         /* Enable memory arbiter. */
1874         if (sc->bge_asicrev != BGE_ASICREV_BCM5705)
1875                 CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
1876
1877         /*
1878          * Prevent PXE restart: write a magic number to the
1879          * general communications memory at 0xB50.
1880          */
1881         bge_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER);
1882         /*
1883          * Poll the value location we just wrote until
1884          * we see the 1's complement of the magic number.
1885          * This indicates that the firmware initialization
1886          * is complete.
1887          */
1888         for (i = 0; i < BGE_TIMEOUT; i++) {
1889                 val = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM);
1890                 if (val == ~BGE_MAGIC_NUMBER)
1891                         break;
1892                 DELAY(10);
1893         }
1894
1895         if (i == BGE_TIMEOUT) {
1896                 if_printf(&sc->arpcom.ac_if, "firmware handshake timed out\n");
1897                 return;
1898         }
1899
1900         /*
1901          * XXX Wait for the value of the PCISTATE register to
1902          * return to its original pre-reset state. This is a
1903          * fairly good indicator of reset completion. If we don't
1904          * wait for the reset to fully complete, trying to read
1905          * from the device's non-PCI registers may yield garbage
1906          * results.
1907          */
1908         for (i = 0; i < BGE_TIMEOUT; i++) {
1909                 if (pci_read_config(dev, BGE_PCI_PCISTATE, 4) == pcistate)
1910                         break;
1911                 DELAY(10);
1912         }
1913
1914         /* Fix up byte swapping */
1915         CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_MODECTL_BYTESWAP_NONFRAME|
1916             BGE_MODECTL_BYTESWAP_DATA);
1917
1918         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
1919
1920         /*
1921          * The 5704 in TBI mode apparently needs some special
1922          * adjustment to insure the SERDES drive level is set
1923          * to 1.2V.
1924          */
1925         if (sc->bge_asicrev == BGE_ASICREV_BCM5704 && sc->bge_tbi) {
1926                 uint32_t serdescfg;
1927
1928                 serdescfg = CSR_READ_4(sc, BGE_SERDES_CFG);
1929                 serdescfg = (serdescfg & ~0xFFF) | 0x880;
1930                 CSR_WRITE_4(sc, BGE_SERDES_CFG, serdescfg);
1931         }
1932
1933         /* XXX: Broadcom Linux driver. */
1934         if (sc->bge_pcie && sc->bge_chipid != BGE_CHIPID_BCM5750_A0) {
1935                 uint32_t v;
1936
1937                 v = CSR_READ_4(sc, 0x7c00);
1938                 CSR_WRITE_4(sc, 0x7c00, v | (1<<25));
1939         }
1940
1941         DELAY(10000);
1942 }
1943
1944 /*
1945  * Frame reception handling. This is called if there's a frame
1946  * on the receive return list.
1947  *
1948  * Note: we have to be able to handle two possibilities here:
1949  * 1) the frame is from the jumbo recieve ring
1950  * 2) the frame is from the standard receive ring
1951  */
1952
1953 static void
1954 bge_rxeof(struct bge_softc *sc)
1955 {
1956         struct ifnet *ifp;
1957         int stdcnt = 0, jumbocnt = 0;
1958
1959         ifp = &sc->arpcom.ac_if;
1960
1961         while(sc->bge_rx_saved_considx !=
1962             sc->bge_rdata->bge_status_block.bge_idx[0].bge_rx_prod_idx) {
1963                 struct bge_rx_bd        *cur_rx;
1964                 uint32_t                rxidx;
1965                 struct mbuf             *m = NULL;
1966                 uint16_t                vlan_tag = 0;
1967                 int                     have_tag = 0;
1968
1969                 cur_rx =
1970             &sc->bge_rdata->bge_rx_return_ring[sc->bge_rx_saved_considx];
1971
1972                 rxidx = cur_rx->bge_idx;
1973                 BGE_INC(sc->bge_rx_saved_considx, sc->bge_return_ring_cnt);
1974
1975                 if (cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) {
1976                         have_tag = 1;
1977                         vlan_tag = cur_rx->bge_vlan_tag;
1978                 }
1979
1980                 if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) {
1981                         BGE_INC(sc->bge_jumbo, BGE_JUMBO_RX_RING_CNT);
1982                         m = sc->bge_cdata.bge_rx_jumbo_chain[rxidx];
1983                         sc->bge_cdata.bge_rx_jumbo_chain[rxidx] = NULL;
1984                         jumbocnt++;
1985                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
1986                                 ifp->if_ierrors++;
1987                                 bge_newbuf_jumbo(sc, sc->bge_jumbo, m);
1988                                 continue;
1989                         }
1990                         if (bge_newbuf_jumbo(sc,
1991                             sc->bge_jumbo, NULL) == ENOBUFS) {
1992                                 ifp->if_ierrors++;
1993                                 bge_newbuf_jumbo(sc, sc->bge_jumbo, m);
1994                                 continue;
1995                         }
1996                 } else {
1997                         BGE_INC(sc->bge_std, BGE_STD_RX_RING_CNT);
1998                         m = sc->bge_cdata.bge_rx_std_chain[rxidx];
1999                         sc->bge_cdata.bge_rx_std_chain[rxidx] = NULL;
2000                         stdcnt++;
2001                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2002                                 ifp->if_ierrors++;
2003                                 bge_newbuf_std(sc, sc->bge_std, m);
2004                                 continue;
2005                         }
2006                         if (bge_newbuf_std(sc, sc->bge_std,
2007                             NULL) == ENOBUFS) {
2008                                 ifp->if_ierrors++;
2009                                 bge_newbuf_std(sc, sc->bge_std, m);
2010                                 continue;
2011                         }
2012                 }
2013
2014                 ifp->if_ipackets++;
2015 #ifndef __i386__
2016                 /*
2017                  * The i386 allows unaligned accesses, but for other
2018                  * platforms we must make sure the payload is aligned.
2019                  */
2020                 if (sc->bge_rx_alignment_bug) {
2021                         bcopy(m->m_data, m->m_data + ETHER_ALIGN,
2022                             cur_rx->bge_len);
2023                         m->m_data += ETHER_ALIGN;
2024                 }
2025 #endif
2026                 m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN;
2027                 m->m_pkthdr.rcvif = ifp;
2028
2029 #if 0 /* currently broken for some packets, possibly related to TCP options */
2030                 if (ifp->if_hwassist) {
2031                         m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
2032                         if ((cur_rx->bge_ip_csum ^ 0xffff) == 0)
2033                                 m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
2034                         if (cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM) {
2035                                 m->m_pkthdr.csum_data =
2036                                     cur_rx->bge_tcp_udp_csum;
2037                                 m->m_pkthdr.csum_flags |= CSUM_DATA_VALID;
2038                         }
2039                 }
2040 #endif
2041
2042                 /*
2043                  * If we received a packet with a vlan tag, pass it
2044                  * to vlan_input() instead of ether_input().
2045                  */
2046                 if (have_tag) {
2047                         VLAN_INPUT_TAG(m, vlan_tag);
2048                         have_tag = vlan_tag = 0;
2049                 } else {
2050                         ifp->if_input(ifp, m);
2051                 }
2052         }
2053
2054         CSR_WRITE_4(sc, BGE_MBX_RX_CONS0_LO, sc->bge_rx_saved_considx);
2055         if (stdcnt)
2056                 CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
2057         if (jumbocnt)
2058                 CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
2059 }
2060
2061 static void
2062 bge_txeof(struct bge_softc *sc)
2063 {
2064         struct bge_tx_bd *cur_tx = NULL;
2065         struct ifnet *ifp;
2066
2067         ifp = &sc->arpcom.ac_if;
2068
2069         /*
2070          * Go through our tx ring and free mbufs for those
2071          * frames that have been sent.
2072          */
2073         while (sc->bge_tx_saved_considx !=
2074             sc->bge_rdata->bge_status_block.bge_idx[0].bge_tx_cons_idx) {
2075                 uint32_t                idx = 0;
2076
2077                 idx = sc->bge_tx_saved_considx;
2078                 cur_tx = &sc->bge_rdata->bge_tx_ring[idx];
2079                 if (cur_tx->bge_flags & BGE_TXBDFLAG_END)
2080                         ifp->if_opackets++;
2081                 if (sc->bge_cdata.bge_tx_chain[idx] != NULL) {
2082                         m_freem(sc->bge_cdata.bge_tx_chain[idx]);
2083                         sc->bge_cdata.bge_tx_chain[idx] = NULL;
2084                 }
2085                 sc->bge_txcnt--;
2086                 BGE_INC(sc->bge_tx_saved_considx, BGE_TX_RING_CNT);
2087                 ifp->if_timer = 0;
2088         }
2089
2090         if (cur_tx != NULL)
2091                 ifp->if_flags &= ~IFF_OACTIVE;
2092 }
2093
2094 static void
2095 bge_intr(void *xsc)
2096 {
2097         struct bge_softc *sc = xsc;
2098         struct ifnet *ifp = &sc->arpcom.ac_if;
2099         uint32_t status, statusword, mimode;
2100
2101         /* XXX */
2102         statusword = loadandclear(&sc->bge_rdata->bge_status_block.bge_status);
2103
2104 #ifdef notdef
2105         /* Avoid this for now -- checking this register is expensive. */
2106         /* Make sure this is really our interrupt. */
2107         if (!(CSR_READ_4(sc, BGE_MISC_LOCAL_CTL) & BGE_MLC_INTR_STATE))
2108                 return;
2109 #endif
2110         /* Ack interrupt and stop others from occuring. */
2111         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 1);
2112
2113         /*
2114          * Process link state changes.
2115          * Grrr. The link status word in the status block does
2116          * not work correctly on the BCM5700 rev AX and BX chips,
2117          * according to all available information. Hence, we have
2118          * to enable MII interrupts in order to properly obtain
2119          * async link changes. Unfortunately, this also means that
2120          * we have to read the MAC status register to detect link
2121          * changes, thereby adding an additional register access to
2122          * the interrupt handler.
2123          */
2124
2125         if (sc->bge_asicrev == BGE_ASICREV_BCM5700) {
2126                 status = CSR_READ_4(sc, BGE_MAC_STS);
2127                 if (status & BGE_MACSTAT_MI_INTERRUPT) {
2128                         sc->bge_link = 0;
2129                         callout_stop(&sc->bge_stat_timer);
2130                         bge_tick_serialized(sc);
2131                         /* Clear the interrupt */
2132                         CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
2133                             BGE_EVTENB_MI_INTERRUPT);
2134                         bge_miibus_readreg(sc->bge_dev, 1, BRGPHY_MII_ISR);
2135                         bge_miibus_writereg(sc->bge_dev, 1, BRGPHY_MII_IMR,
2136                             BRGPHY_INTRS);
2137                 }
2138         } else {
2139                 if (statusword & BGE_STATFLAG_LINKSTATE_CHANGED) {
2140                         /*
2141                          * Sometimes PCS encoding errors are detected in
2142                          * TBI mode (on fiber NICs), and for some reason
2143                          * the chip will signal them as link changes.
2144                          * If we get a link change event, but the 'PCS
2145                          * encoding error' bit in the MAC status register
2146                          * is set, don't bother doing a link check.
2147                          * This avoids spurious "gigabit link up" messages
2148                          * that sometimes appear on fiber NICs during
2149                          * periods of heavy traffic. (There should be no
2150                          * effect on copper NICs.)
2151                          *
2152                          * If we do have a copper NIC (bge_tbi == 0) then
2153                          * check that the AUTOPOLL bit is set before
2154                          * processing the event as a real link change.
2155                          * Turning AUTOPOLL on and off in the MII read/write
2156                          * functions will often trigger a link status
2157                          * interrupt for no reason.
2158                          */
2159                         status = CSR_READ_4(sc, BGE_MAC_STS);
2160                         mimode = CSR_READ_4(sc, BGE_MI_MODE);
2161                         if (!(status & (BGE_MACSTAT_PORT_DECODE_ERROR |
2162                                         BGE_MACSTAT_MI_COMPLETE)) &&
2163                             (!sc->bge_tbi && (mimode & BGE_MIMODE_AUTOPOLL))) {
2164                                 sc->bge_link = 0;
2165                                 callout_stop(&sc->bge_stat_timer);
2166                                 bge_tick_serialized(sc);
2167                         }
2168                         sc->bge_link = 0;
2169                         callout_stop(&sc->bge_stat_timer);
2170                         bge_tick_serialized(sc);
2171                         /* Clear the interrupt */
2172                         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
2173                             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
2174                             BGE_MACSTAT_LINK_CHANGED);
2175
2176                         /* Force flush the status block cached by PCI bridge */
2177                         CSR_READ_4(sc, BGE_MBX_IRQ0_LO);
2178                 }
2179         }
2180
2181         if (ifp->if_flags & IFF_RUNNING) {
2182                 /* Check RX return ring producer/consumer */
2183                 bge_rxeof(sc);
2184
2185                 /* Check TX ring producer/consumer */
2186                 bge_txeof(sc);
2187         }
2188
2189         bge_handle_events(sc);
2190
2191         /* Re-enable interrupts. */
2192         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 0);
2193
2194         if ((ifp->if_flags & IFF_RUNNING) && !ifq_is_empty(&ifp->if_snd))
2195                 (*ifp->if_start)(ifp);
2196 }
2197
2198 static void
2199 bge_tick(void *xsc)
2200 {
2201         struct bge_softc *sc = xsc;
2202         struct ifnet *ifp = &sc->arpcom.ac_if;
2203
2204         lwkt_serialize_enter(ifp->if_serializer);
2205         bge_tick_serialized(xsc);
2206         lwkt_serialize_exit(ifp->if_serializer);
2207 }
2208
2209 static void
2210 bge_tick_serialized(void *xsc)
2211 {
2212         struct bge_softc *sc = xsc;
2213         struct ifnet *ifp = &sc->arpcom.ac_if;
2214         struct mii_data *mii = NULL;
2215         struct ifmedia *ifm = NULL;
2216
2217         if (sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
2218             sc->bge_asicrev == BGE_ASICREV_BCM5750)
2219                 bge_stats_update_regs(sc);
2220         else
2221                 bge_stats_update(sc);
2222
2223         callout_reset(&sc->bge_stat_timer, hz, bge_tick, sc);
2224
2225         if (sc->bge_link) {
2226                 return;
2227         }
2228
2229         if (sc->bge_tbi) {
2230                 ifm = &sc->bge_ifmedia;
2231                 if (CSR_READ_4(sc, BGE_MAC_STS) &
2232                     BGE_MACSTAT_TBI_PCS_SYNCHED) {
2233                         sc->bge_link++;
2234                         if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
2235                                 BGE_CLRBIT(sc, BGE_MAC_MODE,
2236                                            BGE_MACMODE_TBI_SEND_CFGS);
2237                         }
2238                         CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF);
2239                         if_printf(ifp, "gigabit link up\n");
2240                         if (!ifq_is_empty(&ifp->if_snd))
2241                                 (*ifp->if_start)(ifp);
2242                 }
2243                 return;
2244         }
2245
2246         mii = device_get_softc(sc->bge_miibus);
2247         mii_tick(mii);
2248
2249         if (!sc->bge_link) {
2250                 mii_pollstat(mii);
2251                 if (mii->mii_media_status & IFM_ACTIVE &&
2252                     IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
2253                         sc->bge_link++;
2254                         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T ||
2255                             IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX)
2256                                 if_printf(ifp, "gigabit link up\n");
2257                         if (!ifq_is_empty(&ifp->if_snd))
2258                                 (*ifp->if_start)(ifp);
2259                 }
2260         }
2261 }
2262
2263 static void
2264 bge_stats_update_regs(struct bge_softc *sc)
2265 {
2266         struct ifnet *ifp = &sc->arpcom.ac_if;
2267         struct bge_mac_stats_regs stats;
2268         uint32_t *s;
2269         int i;
2270
2271         s = (uint32_t *)&stats;
2272         for (i = 0; i < sizeof(struct bge_mac_stats_regs); i += 4) {
2273                 *s = CSR_READ_4(sc, BGE_RX_STATS + i);
2274                 s++;
2275         }
2276
2277         ifp->if_collisions +=
2278            (stats.dot3StatsSingleCollisionFrames +
2279            stats.dot3StatsMultipleCollisionFrames +
2280            stats.dot3StatsExcessiveCollisions +
2281            stats.dot3StatsLateCollisions) -
2282            ifp->if_collisions;
2283 }
2284
2285 static void
2286 bge_stats_update(struct bge_softc *sc)
2287 {
2288         struct ifnet *ifp = &sc->arpcom.ac_if;
2289         struct bge_stats *stats;
2290
2291         stats = (struct bge_stats *)(sc->bge_vhandle +
2292             BGE_MEMWIN_START + BGE_STATS_BLOCK);
2293
2294         ifp->if_collisions +=
2295            (stats->txstats.dot3StatsSingleCollisionFrames.bge_addr_lo +
2296            stats->txstats.dot3StatsMultipleCollisionFrames.bge_addr_lo +
2297            stats->txstats.dot3StatsExcessiveCollisions.bge_addr_lo +
2298            stats->txstats.dot3StatsLateCollisions.bge_addr_lo) -
2299            ifp->if_collisions;
2300
2301 #ifdef notdef
2302         ifp->if_collisions +=
2303            (sc->bge_rdata->bge_info.bge_stats.dot3StatsSingleCollisionFrames +
2304            sc->bge_rdata->bge_info.bge_stats.dot3StatsMultipleCollisionFrames +
2305            sc->bge_rdata->bge_info.bge_stats.dot3StatsExcessiveCollisions +
2306            sc->bge_rdata->bge_info.bge_stats.dot3StatsLateCollisions) -
2307            ifp->if_collisions;
2308 #endif
2309 }
2310
2311 /*
2312  * Encapsulate an mbuf chain in the tx ring  by coupling the mbuf data
2313  * pointers to descriptors.
2314  */
2315 static int
2316 bge_encap(struct bge_softc *sc, struct mbuf *m_head, uint32_t *txidx)
2317 {
2318         struct bge_tx_bd *f = NULL;
2319         struct mbuf *m;
2320         uint32_t frag, cur, cnt = 0;
2321         uint16_t csum_flags = 0;
2322         struct ifvlan *ifv = NULL;
2323
2324         if ((m_head->m_flags & (M_PROTO1|M_PKTHDR)) == (M_PROTO1|M_PKTHDR) &&
2325             m_head->m_pkthdr.rcvif != NULL &&
2326             m_head->m_pkthdr.rcvif->if_type == IFT_L2VLAN)
2327                 ifv = m_head->m_pkthdr.rcvif->if_softc;
2328
2329         m = m_head;
2330         cur = frag = *txidx;
2331
2332         if (m_head->m_pkthdr.csum_flags) {
2333                 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
2334                         csum_flags |= BGE_TXBDFLAG_IP_CSUM;
2335                 if (m_head->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))
2336                         csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM;
2337                 if (m_head->m_flags & M_LASTFRAG)
2338                         csum_flags |= BGE_TXBDFLAG_IP_FRAG_END;
2339                 else if (m_head->m_flags & M_FRAG)
2340                         csum_flags |= BGE_TXBDFLAG_IP_FRAG;
2341         }
2342         /*
2343          * Start packing the mbufs in this chain into
2344          * the fragment pointers. Stop when we run out
2345          * of fragments or hit the end of the mbuf chain.
2346          */
2347         for (m = m_head; m != NULL; m = m->m_next) {
2348                 if (m->m_len != 0) {
2349                         f = &sc->bge_rdata->bge_tx_ring[frag];
2350                         if (sc->bge_cdata.bge_tx_chain[frag] != NULL)
2351                                 break;
2352                         BGE_HOSTADDR(f->bge_addr,
2353                             vtophys(mtod(m, vm_offset_t)));
2354                         f->bge_len = m->m_len;
2355                         f->bge_flags = csum_flags;
2356                         if (ifv != NULL) {
2357                                 f->bge_flags |= BGE_TXBDFLAG_VLAN_TAG;
2358                                 f->bge_vlan_tag = ifv->ifv_tag;
2359                         } else {
2360                                 f->bge_vlan_tag = 0;
2361                         }
2362                         /*
2363                          * Sanity check: avoid coming within 16 descriptors
2364                          * of the end of the ring.
2365                          */
2366                         if ((BGE_TX_RING_CNT - (sc->bge_txcnt + cnt)) < 16)
2367                                 return(ENOBUFS);
2368                         cur = frag;
2369                         BGE_INC(frag, BGE_TX_RING_CNT);
2370                         cnt++;
2371                 }
2372         }
2373
2374         if (m != NULL)
2375                 return(ENOBUFS);
2376
2377         if (frag == sc->bge_tx_saved_considx)
2378                 return(ENOBUFS);
2379
2380         sc->bge_rdata->bge_tx_ring[cur].bge_flags |= BGE_TXBDFLAG_END;
2381         sc->bge_cdata.bge_tx_chain[cur] = m_head;
2382         sc->bge_txcnt += cnt;
2383
2384         *txidx = frag;
2385
2386         return(0);
2387 }
2388
2389 /*
2390  * Main transmit routine. To avoid having to do mbuf copies, we put pointers
2391  * to the mbuf data regions directly in the transmit descriptors.
2392  */
2393 static void
2394 bge_start(struct ifnet *ifp)
2395 {
2396         struct bge_softc *sc;
2397         struct mbuf *m_head = NULL;
2398         uint32_t prodidx = 0;
2399         int need_trans;
2400
2401         sc = ifp->if_softc;
2402
2403         if (!sc->bge_link)
2404                 return;
2405
2406         prodidx = CSR_READ_4(sc, BGE_MBX_TX_HOST_PROD0_LO);
2407
2408         need_trans = 0;
2409         while(sc->bge_cdata.bge_tx_chain[prodidx] == NULL) {
2410                 m_head = ifq_poll(&ifp->if_snd);
2411                 if (m_head == NULL)
2412                         break;
2413
2414                 /*
2415                  * XXX
2416                  * safety overkill.  If this is a fragmented packet chain
2417                  * with delayed TCP/UDP checksums, then only encapsulate
2418                  * it if we have enough descriptors to handle the entire
2419                  * chain at once.
2420                  * (paranoia -- may not actually be needed)
2421                  */
2422                 if (m_head->m_flags & M_FIRSTFRAG &&
2423                     m_head->m_pkthdr.csum_flags & (CSUM_DELAY_DATA)) {
2424                         if ((BGE_TX_RING_CNT - sc->bge_txcnt) <
2425                             m_head->m_pkthdr.csum_data + 16) {
2426                                 ifp->if_flags |= IFF_OACTIVE;
2427                                 break;
2428                         }
2429                 }
2430
2431                 /*
2432                  * Pack the data into the transmit ring. If we
2433                  * don't have room, set the OACTIVE flag and wait
2434                  * for the NIC to drain the ring.
2435                  */
2436                 if (bge_encap(sc, m_head, &prodidx)) {
2437                         ifp->if_flags |= IFF_OACTIVE;
2438                         break;
2439                 }
2440                 ifq_dequeue(&ifp->if_snd, m_head);
2441                 need_trans = 1;
2442
2443                 BPF_MTAP(ifp, m_head);
2444         }
2445
2446         if (!need_trans)
2447                 return;
2448
2449         /* Transmit */
2450         CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
2451         /* 5700 b2 errata */
2452         if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
2453                 CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
2454
2455         /*
2456          * Set a timeout in case the chip goes out to lunch.
2457          */
2458         ifp->if_timer = 5;
2459 }
2460
2461 static void
2462 bge_init(void *xsc)
2463 {
2464         struct bge_softc *sc = xsc;
2465         struct ifnet *ifp = &sc->arpcom.ac_if;
2466         uint16_t *m;
2467
2468         if (ifp->if_flags & IFF_RUNNING) {
2469                 return;
2470         }
2471
2472         /* Cancel pending I/O and flush buffers. */
2473         bge_stop(sc);
2474         bge_reset(sc);
2475         bge_chipinit(sc);
2476
2477         /*
2478          * Init the various state machines, ring
2479          * control blocks and firmware.
2480          */
2481         if (bge_blockinit(sc)) {
2482                 if_printf(ifp, "initialization failure\n");
2483                 return;
2484         }
2485
2486         /* Specify MTU. */
2487         CSR_WRITE_4(sc, BGE_RX_MTU, ifp->if_mtu +
2488             ETHER_HDR_LEN + ETHER_CRC_LEN);
2489
2490         /* Load our MAC address. */
2491         m = (uint16_t *)&sc->arpcom.ac_enaddr[0];
2492         CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0]));
2493         CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2]));
2494
2495         /* Enable or disable promiscuous mode as needed. */
2496         if (ifp->if_flags & IFF_PROMISC) {
2497                 BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
2498         } else {
2499                 BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
2500         }
2501
2502         /* Program multicast filter. */
2503         bge_setmulti(sc);
2504
2505         /* Init RX ring. */
2506         bge_init_rx_ring_std(sc);
2507
2508         /*
2509          * Workaround for a bug in 5705 ASIC rev A0. Poll the NIC's
2510          * memory to insure that the chip has in fact read the first
2511          * entry of the ring.
2512          */
2513         if (sc->bge_chipid == BGE_CHIPID_BCM5705_A0) {
2514                 uint32_t                v, i;
2515                 for (i = 0; i < 10; i++) {
2516                         DELAY(20);
2517                         v = bge_readmem_ind(sc, BGE_STD_RX_RINGS + 8);
2518                         if (v == (MCLBYTES - ETHER_ALIGN))
2519                                 break;
2520                 }
2521                 if (i == 10)
2522                         if_printf(ifp, "5705 A0 chip failed to load RX ring\n");
2523         }
2524
2525         /* Init jumbo RX ring. */
2526         if (ifp->if_mtu > (ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN))
2527                 bge_init_rx_ring_jumbo(sc);
2528
2529         /* Init our RX return ring index */
2530         sc->bge_rx_saved_considx = 0;
2531
2532         /* Init TX ring. */
2533         bge_init_tx_ring(sc);
2534
2535         /* Turn on transmitter */
2536         BGE_SETBIT(sc, BGE_TX_MODE, BGE_TXMODE_ENABLE);
2537
2538         /* Turn on receiver */
2539         BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
2540
2541         /* Tell firmware we're alive. */
2542         BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
2543
2544         /* Enable host interrupts. */
2545         BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA);
2546         BGE_CLRBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
2547         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 0);
2548
2549         bge_ifmedia_upd(ifp);
2550
2551         ifp->if_flags |= IFF_RUNNING;
2552         ifp->if_flags &= ~IFF_OACTIVE;
2553
2554         callout_reset(&sc->bge_stat_timer, hz, bge_tick, sc);
2555 }
2556
2557 /*
2558  * Set media options.
2559  */
2560 static int
2561 bge_ifmedia_upd(struct ifnet *ifp)
2562 {
2563         struct bge_softc *sc = ifp->if_softc;
2564         struct ifmedia *ifm = &sc->bge_ifmedia;
2565         struct mii_data *mii;
2566
2567         /* If this is a 1000baseX NIC, enable the TBI port. */
2568         if (sc->bge_tbi) {
2569                 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
2570                         return(EINVAL);
2571                 switch(IFM_SUBTYPE(ifm->ifm_media)) {
2572                 case IFM_AUTO:
2573 #ifndef BGE_FAKE_AUTONEG
2574                         /*
2575                          * The BCM5704 ASIC appears to have a special
2576                          * mechanism for programming the autoneg
2577                          * advertisement registers in TBI mode.
2578                          */
2579                         if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
2580                                 uint32_t sgdig;
2581
2582                                 CSR_WRITE_4(sc, BGE_TX_TBI_AUTONEG, 0);
2583                                 sgdig = CSR_READ_4(sc, BGE_SGDIG_CFG);
2584                                 sgdig |= BGE_SGDIGCFG_AUTO |
2585                                          BGE_SGDIGCFG_PAUSE_CAP |
2586                                          BGE_SGDIGCFG_ASYM_PAUSE;
2587                                 CSR_WRITE_4(sc, BGE_SGDIG_CFG,
2588                                             sgdig | BGE_SGDIGCFG_SEND);
2589                                 DELAY(5);
2590                                 CSR_WRITE_4(sc, BGE_SGDIG_CFG, sgdig);
2591                         }
2592 #endif  /* !BEG_FAKE_AUTONEG */
2593                         break;
2594                 case IFM_1000_SX:
2595                         if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) {
2596                                 BGE_CLRBIT(sc, BGE_MAC_MODE,
2597                                     BGE_MACMODE_HALF_DUPLEX);
2598                         } else {
2599                                 BGE_SETBIT(sc, BGE_MAC_MODE,
2600                                     BGE_MACMODE_HALF_DUPLEX);
2601                         }
2602                         break;
2603                 default:
2604                         return(EINVAL);
2605                 }
2606                 return(0);
2607         }
2608
2609         mii = device_get_softc(sc->bge_miibus);
2610         sc->bge_link = 0;
2611         if (mii->mii_instance) {
2612                 struct mii_softc *miisc;
2613                 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL;
2614                     miisc = LIST_NEXT(miisc, mii_list))
2615                         mii_phy_reset(miisc);
2616         }
2617         mii_mediachg(mii);
2618
2619         return(0);
2620 }
2621
2622 /*
2623  * Report current media status.
2624  */
2625 static void
2626 bge_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
2627 {
2628         struct bge_softc *sc = ifp->if_softc;
2629         struct mii_data *mii;
2630
2631         if (sc->bge_tbi) {
2632                 ifmr->ifm_status = IFM_AVALID;
2633                 ifmr->ifm_active = IFM_ETHER;
2634                 if (CSR_READ_4(sc, BGE_MAC_STS) &
2635                     BGE_MACSTAT_TBI_PCS_SYNCHED)
2636                         ifmr->ifm_status |= IFM_ACTIVE;
2637                 ifmr->ifm_active |= IFM_1000_SX;
2638                 if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX)
2639                         ifmr->ifm_active |= IFM_HDX;
2640                 else
2641                         ifmr->ifm_active |= IFM_FDX;
2642                 return;
2643         }
2644
2645         mii = device_get_softc(sc->bge_miibus);
2646         mii_pollstat(mii);
2647         ifmr->ifm_active = mii->mii_media_active;
2648         ifmr->ifm_status = mii->mii_media_status;
2649 }
2650
2651 static int
2652 bge_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
2653 {
2654         struct bge_softc *sc = ifp->if_softc;
2655         struct ifreq *ifr = (struct ifreq *) data;
2656         int mask, error = 0;
2657         struct mii_data *mii;
2658
2659         switch(command) {
2660         case SIOCSIFMTU:
2661                 /* Disallow jumbo frames on 5705/5750. */
2662                 if (((sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
2663                       sc->bge_asicrev == BGE_ASICREV_BCM5750) &&
2664                      ifr->ifr_mtu > ETHERMTU) || ifr->ifr_mtu > BGE_JUMBO_MTU)
2665                         error = EINVAL;
2666                 else {
2667                         ifp->if_mtu = ifr->ifr_mtu;
2668                         ifp->if_flags &= ~IFF_RUNNING;
2669                         bge_init(sc);
2670                 }
2671                 break;
2672         case SIOCSIFFLAGS:
2673                 if (ifp->if_flags & IFF_UP) {
2674                         /*
2675                          * If only the state of the PROMISC flag changed,
2676                          * then just use the 'set promisc mode' command
2677                          * instead of reinitializing the entire NIC. Doing
2678                          * a full re-init means reloading the firmware and
2679                          * waiting for it to start up, which may take a
2680                          * second or two.
2681                          */
2682                         if (ifp->if_flags & IFF_RUNNING &&
2683                             ifp->if_flags & IFF_PROMISC &&
2684                             !(sc->bge_if_flags & IFF_PROMISC)) {
2685                                 BGE_SETBIT(sc, BGE_RX_MODE,
2686                                     BGE_RXMODE_RX_PROMISC);
2687                         } else if (ifp->if_flags & IFF_RUNNING &&
2688                             !(ifp->if_flags & IFF_PROMISC) &&
2689                             sc->bge_if_flags & IFF_PROMISC) {
2690                                 BGE_CLRBIT(sc, BGE_RX_MODE,
2691                                     BGE_RXMODE_RX_PROMISC);
2692                         } else
2693                                 bge_init(sc);
2694                 } else {
2695                         if (ifp->if_flags & IFF_RUNNING) {
2696                                 bge_stop(sc);
2697                         }
2698                 }
2699                 sc->bge_if_flags = ifp->if_flags;
2700                 error = 0;
2701                 break;
2702         case SIOCADDMULTI:
2703         case SIOCDELMULTI:
2704                 if (ifp->if_flags & IFF_RUNNING) {
2705                         bge_setmulti(sc);
2706                         error = 0;
2707                 }
2708                 break;
2709         case SIOCSIFMEDIA:
2710         case SIOCGIFMEDIA:
2711                 if (sc->bge_tbi) {
2712                         error = ifmedia_ioctl(ifp, ifr,
2713                             &sc->bge_ifmedia, command);
2714                 } else {
2715                         mii = device_get_softc(sc->bge_miibus);
2716                         error = ifmedia_ioctl(ifp, ifr,
2717                             &mii->mii_media, command);
2718                 }
2719                 break;
2720         case SIOCSIFCAP:
2721                 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
2722                 if (mask & IFCAP_HWCSUM) {
2723                         if (IFCAP_HWCSUM & ifp->if_capenable)
2724                                 ifp->if_capenable &= ~IFCAP_HWCSUM;
2725                         else
2726                                 ifp->if_capenable |= IFCAP_HWCSUM;
2727                 }
2728                 error = 0;
2729                 break;
2730         default:
2731                 error = ether_ioctl(ifp, command, data);
2732                 break;
2733         }
2734         return(error);
2735 }
2736
2737 static void
2738 bge_watchdog(struct ifnet *ifp)
2739 {
2740         struct bge_softc *sc = ifp->if_softc;
2741
2742         if_printf(ifp, "watchdog timeout -- resetting\n");
2743
2744         ifp->if_flags &= ~IFF_RUNNING;
2745         bge_init(sc);
2746
2747         ifp->if_oerrors++;
2748
2749         if (!ifq_is_empty(&ifp->if_snd))
2750                 ifp->if_start(ifp);
2751 }
2752
2753 /*
2754  * Stop the adapter and free any mbufs allocated to the
2755  * RX and TX lists.
2756  */
2757 static void
2758 bge_stop(struct bge_softc *sc)
2759 {
2760         struct ifnet *ifp = &sc->arpcom.ac_if;
2761         struct ifmedia_entry *ifm;
2762         struct mii_data *mii = NULL;
2763         int mtmp, itmp;
2764
2765         if (!sc->bge_tbi)
2766                 mii = device_get_softc(sc->bge_miibus);
2767
2768         callout_stop(&sc->bge_stat_timer);
2769
2770         /*
2771          * Disable all of the receiver blocks
2772          */
2773         BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
2774         BGE_CLRBIT(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
2775         BGE_CLRBIT(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
2776         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
2777             sc->bge_asicrev != BGE_ASICREV_BCM5750)
2778                 BGE_CLRBIT(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
2779         BGE_CLRBIT(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE);
2780         BGE_CLRBIT(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
2781         BGE_CLRBIT(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE);
2782
2783         /*
2784          * Disable all of the transmit blocks
2785          */
2786         BGE_CLRBIT(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
2787         BGE_CLRBIT(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
2788         BGE_CLRBIT(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
2789         BGE_CLRBIT(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE);
2790         BGE_CLRBIT(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
2791         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
2792             sc->bge_asicrev != BGE_ASICREV_BCM5750)
2793                 BGE_CLRBIT(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
2794         BGE_CLRBIT(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
2795
2796         /*
2797          * Shut down all of the memory managers and related
2798          * state machines.
2799          */
2800         BGE_CLRBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
2801         BGE_CLRBIT(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE);
2802         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
2803             sc->bge_asicrev != BGE_ASICREV_BCM5750)
2804                 BGE_CLRBIT(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
2805         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
2806         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
2807         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
2808             sc->bge_asicrev != BGE_ASICREV_BCM5750) {
2809                 BGE_CLRBIT(sc, BGE_BMAN_MODE, BGE_BMANMODE_ENABLE);
2810                 BGE_CLRBIT(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
2811         }
2812
2813         /* Disable host interrupts. */
2814         BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
2815         CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 1);
2816
2817         /*
2818          * Tell firmware we're shutting down.
2819          */
2820         BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
2821
2822         /* Free the RX lists. */
2823         bge_free_rx_ring_std(sc);
2824
2825         /* Free jumbo RX list. */
2826         if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
2827             sc->bge_asicrev != BGE_ASICREV_BCM5750)
2828                 bge_free_rx_ring_jumbo(sc);
2829
2830         /* Free TX buffers. */
2831         bge_free_tx_ring(sc);
2832
2833         /*
2834          * Isolate/power down the PHY, but leave the media selection
2835          * unchanged so that things will be put back to normal when
2836          * we bring the interface back up.
2837          */
2838         if (!sc->bge_tbi) {
2839                 itmp = ifp->if_flags;
2840                 ifp->if_flags |= IFF_UP;
2841                 ifm = mii->mii_media.ifm_cur;
2842                 mtmp = ifm->ifm_media;
2843                 ifm->ifm_media = IFM_ETHER|IFM_NONE;
2844                 mii_mediachg(mii);
2845                 ifm->ifm_media = mtmp;
2846                 ifp->if_flags = itmp;
2847         }
2848
2849         sc->bge_link = 0;
2850
2851         sc->bge_tx_saved_considx = BGE_TXCONS_UNSET;
2852
2853         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
2854 }
2855
2856 /*
2857  * Stop all chip I/O so that the kernel's probe routines don't
2858  * get confused by errant DMAs when rebooting.
2859  */
2860 static void
2861 bge_shutdown(device_t dev)
2862 {
2863         struct bge_softc *sc = device_get_softc(dev);
2864
2865         bge_stop(sc);
2866         bge_reset(sc);
2867 }