sys/dev/netif/bnx/if_bnx.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 1.3.2.39 2005/07/03 03:41:18 silby Exp $
  34  */
  35
  36
  37 #include "opt_polling.h"
  38
  39 #include <sys/param.h>
  40 #include <sys/bus.h>
  41 #include <sys/endian.h>
  42 #include <sys/kernel.h>
  43 #include <sys/interrupt.h>
  44 #include <sys/mbuf.h>
  45 #include <sys/malloc.h>
  46 #include <sys/queue.h>
  47 #include <sys/rman.h>
  48 #include <sys/serialize.h>
  49 #include <sys/socket.h>
  50 #include <sys/sockio.h>
  51 #include <sys/sysctl.h>
  52
  53 #include <net/bpf.h>
  54 #include <net/ethernet.h>
  55 #include <net/if.h>
  56 #include <net/if_arp.h>
  57 #include <net/if_dl.h>
  58 #include <net/if_media.h>
  59 #include <net/if_types.h>
  60 #include <net/ifq_var.h>
  61 #include <net/vlan/if_vlan_var.h>
  62 #include <net/vlan/if_vlan_ether.h>
  63
  64 #include <dev/netif/mii_layer/mii.h>
  65 #include <dev/netif/mii_layer/miivar.h>
  66 #include <dev/netif/mii_layer/brgphyreg.h>
  67
  68 #include <bus/pci/pcidevs.h>
  69 #include <bus/pci/pcireg.h>
  70 #include <bus/pci/pcivar.h>
  71
  72 #include <dev/netif/bge/if_bgereg.h>
  73 #include <dev/netif/bnx/if_bnxvar.h>
  74
  75 /* "device miibus" required.  See GENERIC if you get errors here. */
  76 #include "miibus_if.h"
  77
  78 #define BNX_CSUM_FEATURES       (CSUM_IP | CSUM_TCP | CSUM_UDP)
  79
  80 static const struct bnx_type {
  81         uint16_t                bnx_vid;
  82         uint16_t                bnx_did;
  83         char                    *bnx_name;
  84 } bnx_devs[] = {
  85         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5717,
  86                 "Broadcom BCM5717 Gigabit Ethernet" },
  87         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5718,
  88                 "Broadcom BCM5718 Gigabit Ethernet" },
  89         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5719,
  90                 "Broadcom BCM5719 Gigabit Ethernet" },
  91         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5720_ALT,
  92                 "Broadcom BCM5720 Gigabit Ethernet" },
  93
  94         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57761,
  95                 "Broadcom BCM57761 Gigabit Ethernet" },
  96         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57781,
  97                 "Broadcom BCM57781 Gigabit Ethernet" },
  98         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57791,
  99                 "Broadcom BCM57791 Fast Ethernet" },
 100         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57765,
 101                 "Broadcom BCM57765 Gigabit Ethernet" },
 102         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57785,
 103                 "Broadcom BCM57785 Gigabit Ethernet" },
 104         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57795,
 105                 "Broadcom BCM57795 Fast Ethernet" },
 106
 107         { 0, 0, NULL }
 108 };
 109
 110 #define BNX_IS_JUMBO_CAPABLE(sc)        ((sc)->bnx_flags & BNX_FLAG_JUMBO)
 111 #define BNX_IS_5717_PLUS(sc)            ((sc)->bnx_flags & BNX_FLAG_5717_PLUS)
 112 #define BNX_IS_57765_PLUS(sc)           ((sc)->bnx_flags & BNX_FLAG_57765_PLUS)
 113 #define BNX_IS_57765_FAMILY(sc)  \
 114         ((sc)->bnx_flags & BNX_FLAG_57765_FAMILY)
 115
 116 typedef int     (*bnx_eaddr_fcn_t)(struct bnx_softc *, uint8_t[]);
 117
 118 static int      bnx_probe(device_t);
 119 static int      bnx_attach(device_t);
 120 static int      bnx_detach(device_t);
 121 static void     bnx_shutdown(device_t);
 122 static int      bnx_suspend(device_t);
 123 static int      bnx_resume(device_t);
 124 static int      bnx_miibus_readreg(device_t, int, int);
 125 static int      bnx_miibus_writereg(device_t, int, int, int);
 126 static void     bnx_miibus_statchg(device_t);
 127
 128 #ifdef DEVICE_POLLING
 129 static void     bnx_poll(struct ifnet *ifp, enum poll_cmd cmd, int count);
 130 #endif
 131 static void     bnx_intr_legacy(void *);
 132 static void     bnx_msi(void *);
 133 static void     bnx_msi_oneshot(void *);
 134 static void     bnx_intr(struct bnx_softc *);
 135 static void     bnx_enable_intr(struct bnx_softc *);
 136 static void     bnx_disable_intr(struct bnx_softc *);
 137 static void     bnx_txeof(struct bnx_softc *, uint16_t);
 138 static void     bnx_rxeof(struct bnx_softc *, uint16_t);
 139
 140 static void     bnx_start(struct ifnet *);
 141 static int      bnx_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
 142 static void     bnx_init(void *);
 143 static void     bnx_stop(struct bnx_softc *);
 144 static void     bnx_watchdog(struct ifnet *);
 145 static int      bnx_ifmedia_upd(struct ifnet *);
 146 static void     bnx_ifmedia_sts(struct ifnet *, struct ifmediareq *);
 147 static void     bnx_tick(void *);
 148
 149 static int      bnx_alloc_jumbo_mem(struct bnx_softc *);
 150 static void     bnx_free_jumbo_mem(struct bnx_softc *);
 151 static struct bnx_jslot
 152                 *bnx_jalloc(struct bnx_softc *);
 153 static void     bnx_jfree(void *);
 154 static void     bnx_jref(void *);
 155 static int      bnx_newbuf_std(struct bnx_softc *, int, int);
 156 static int      bnx_newbuf_jumbo(struct bnx_softc *, int, int);
 157 static void     bnx_setup_rxdesc_std(struct bnx_softc *, int);
 158 static void     bnx_setup_rxdesc_jumbo(struct bnx_softc *, int);
 159 static int      bnx_init_rx_ring_std(struct bnx_softc *);
 160 static void     bnx_free_rx_ring_std(struct bnx_softc *);
 161 static int      bnx_init_rx_ring_jumbo(struct bnx_softc *);
 162 static void     bnx_free_rx_ring_jumbo(struct bnx_softc *);
 163 static void     bnx_free_tx_ring(struct bnx_softc *);
 164 static int      bnx_init_tx_ring(struct bnx_softc *);
 165 static int      bnx_dma_alloc(struct bnx_softc *);
 166 static void     bnx_dma_free(struct bnx_softc *);
 167 static int      bnx_dma_block_alloc(struct bnx_softc *, bus_size_t,
 168                     bus_dma_tag_t *, bus_dmamap_t *, void **, bus_addr_t *);
 169 static void     bnx_dma_block_free(bus_dma_tag_t, bus_dmamap_t, void *);
 170 static struct mbuf *
 171                 bnx_defrag_shortdma(struct mbuf *);
 172 static int      bnx_encap(struct bnx_softc *, struct mbuf **, uint32_t *);
 173
 174 static void     bnx_reset(struct bnx_softc *);
 175 static int      bnx_chipinit(struct bnx_softc *);
 176 static int      bnx_blockinit(struct bnx_softc *);
 177 static void     bnx_stop_block(struct bnx_softc *, bus_size_t, uint32_t);
 178 static void     bnx_enable_msi(struct bnx_softc *sc);
 179 static void     bnx_setmulti(struct bnx_softc *);
 180 static void     bnx_setpromisc(struct bnx_softc *);
 181 static void     bnx_stats_update_regs(struct bnx_softc *);
 182 static uint32_t bnx_dma_swap_options(struct bnx_softc *);
 183
 184 static uint32_t bnx_readmem_ind(struct bnx_softc *, uint32_t);
 185 static void     bnx_writemem_ind(struct bnx_softc *, uint32_t, uint32_t);
 186 #ifdef notdef
 187 static uint32_t bnx_readreg_ind(struct bnx_softc *, uint32_t);
 188 #endif
 189 static void     bnx_writereg_ind(struct bnx_softc *, uint32_t, uint32_t);
 190 static void     bnx_writemem_direct(struct bnx_softc *, uint32_t, uint32_t);
 191 static void     bnx_writembx(struct bnx_softc *, int, int);
 192 static uint8_t  bnx_nvram_getbyte(struct bnx_softc *, int, uint8_t *);
 193 static int      bnx_read_nvram(struct bnx_softc *, caddr_t, int, int);
 194 static uint8_t  bnx_eeprom_getbyte(struct bnx_softc *, uint32_t, uint8_t *);
 195 static int      bnx_read_eeprom(struct bnx_softc *, caddr_t, uint32_t, size_t);
 196
 197 static void     bnx_tbi_link_upd(struct bnx_softc *, uint32_t);
 198 static void     bnx_copper_link_upd(struct bnx_softc *, uint32_t);
 199 static void     bnx_autopoll_link_upd(struct bnx_softc *, uint32_t);
 200 static void     bnx_link_poll(struct bnx_softc *);
 201
 202 static int      bnx_get_eaddr_mem(struct bnx_softc *, uint8_t[]);
 203 static int      bnx_get_eaddr_nvram(struct bnx_softc *, uint8_t[]);
 204 static int      bnx_get_eaddr_eeprom(struct bnx_softc *, uint8_t[]);
 205 static int      bnx_get_eaddr(struct bnx_softc *, uint8_t[]);
 206
 207 static void     bnx_coal_change(struct bnx_softc *);
 208 static int      bnx_sysctl_rx_coal_ticks(SYSCTL_HANDLER_ARGS);
 209 static int      bnx_sysctl_tx_coal_ticks(SYSCTL_HANDLER_ARGS);
 210 static int      bnx_sysctl_rx_coal_bds(SYSCTL_HANDLER_ARGS);
 211 static int      bnx_sysctl_tx_coal_bds(SYSCTL_HANDLER_ARGS);
 212 static int      bnx_sysctl_rx_coal_bds_int(SYSCTL_HANDLER_ARGS);
 213 static int      bnx_sysctl_tx_coal_bds_int(SYSCTL_HANDLER_ARGS);
 214 static int      bnx_sysctl_coal_chg(SYSCTL_HANDLER_ARGS, uint32_t *,
 215                     int, int, uint32_t);
 216
 217 static int      bnx_msi_enable = 1;
 218 TUNABLE_INT("hw.bnx.msi.enable", &bnx_msi_enable);
 219
 220 static device_method_t bnx_methods[] = {
 221         /* Device interface */
 222         DEVMETHOD(device_probe,         bnx_probe),
 223         DEVMETHOD(device_attach,        bnx_attach),
 224         DEVMETHOD(device_detach,        bnx_detach),
 225         DEVMETHOD(device_shutdown,      bnx_shutdown),
 226         DEVMETHOD(device_suspend,       bnx_suspend),
 227         DEVMETHOD(device_resume,        bnx_resume),
 228
 229         /* bus interface */
 230         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 231         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
 232
 233         /* MII interface */
 234         DEVMETHOD(miibus_readreg,       bnx_miibus_readreg),
 235         DEVMETHOD(miibus_writereg,      bnx_miibus_writereg),
 236         DEVMETHOD(miibus_statchg,       bnx_miibus_statchg),
 237
 238         { 0, 0 }
 239 };
 240
 241 static DEFINE_CLASS_0(bnx, bnx_driver, bnx_methods, sizeof(struct bnx_softc));
 242 static devclass_t bnx_devclass;
 243
 244 DECLARE_DUMMY_MODULE(if_bnx);
 245 DRIVER_MODULE(if_bnx, pci, bnx_driver, bnx_devclass, NULL, NULL);
 246 DRIVER_MODULE(miibus, bnx, miibus_driver, miibus_devclass, NULL, NULL);
 247
 248 static uint32_t
 249 bnx_readmem_ind(struct bnx_softc *sc, uint32_t off)
 250 {
 251         device_t dev = sc->bnx_dev;
 252         uint32_t val;
 253
 254         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
 255             off >= BGE_STATS_BLOCK && off < BGE_SEND_RING_1_TO_4)
 256                 return 0;
 257
 258         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 259         val = pci_read_config(dev, BGE_PCI_MEMWIN_DATA, 4);
 260         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
 261         return (val);
 262 }
 263
 264 static void
 265 bnx_writemem_ind(struct bnx_softc *sc, uint32_t off, uint32_t val)
 266 {
 267         device_t dev = sc->bnx_dev;
 268
 269         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
 270             off >= BGE_STATS_BLOCK && off < BGE_SEND_RING_1_TO_4)
 271                 return;
 272
 273         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 274         pci_write_config(dev, BGE_PCI_MEMWIN_DATA, val, 4);
 275         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
 276 }
 277
 278 #ifdef notdef
 279 static uint32_t
 280 bnx_readreg_ind(struct bnx_softc *sc, uin32_t off)
 281 {
 282         device_t dev = sc->bnx_dev;
 283
 284         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 285         return(pci_read_config(dev, BGE_PCI_REG_DATA, 4));
 286 }
 287 #endif
 288
 289 static void
 290 bnx_writereg_ind(struct bnx_softc *sc, uint32_t off, uint32_t val)
 291 {
 292         device_t dev = sc->bnx_dev;
 293
 294         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 295         pci_write_config(dev, BGE_PCI_REG_DATA, val, 4);
 296 }
 297
 298 static void
 299 bnx_writemem_direct(struct bnx_softc *sc, uint32_t off, uint32_t val)
 300 {
 301         CSR_WRITE_4(sc, off, val);
 302 }
 303
 304 static void
 305 bnx_writembx(struct bnx_softc *sc, int off, int val)
 306 {
 307         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906)
 308                 off += BGE_LPMBX_IRQ0_HI - BGE_MBX_IRQ0_HI;
 309
 310         CSR_WRITE_4(sc, off, val);
 311 }
 312
 313 static uint8_t
 314 bnx_nvram_getbyte(struct bnx_softc *sc, int addr, uint8_t *dest)
 315 {
 316         uint32_t access, byte = 0;
 317         int i;
 318
 319         /* Lock. */
 320         CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_SET1);
 321         for (i = 0; i < 8000; i++) {
 322                 if (CSR_READ_4(sc, BGE_NVRAM_SWARB) & BGE_NVRAMSWARB_GNT1)
 323                         break;
 324                 DELAY(20);
 325         }
 326         if (i == 8000)
 327                 return (1);
 328
 329         /* Enable access. */
 330         access = CSR_READ_4(sc, BGE_NVRAM_ACCESS);
 331         CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access | BGE_NVRAMACC_ENABLE);
 332
 333         CSR_WRITE_4(sc, BGE_NVRAM_ADDR, addr & 0xfffffffc);
 334         CSR_WRITE_4(sc, BGE_NVRAM_CMD, BGE_NVRAM_READCMD);
 335         for (i = 0; i < BNX_TIMEOUT * 10; i++) {
 336                 DELAY(10);
 337                 if (CSR_READ_4(sc, BGE_NVRAM_CMD) & BGE_NVRAMCMD_DONE) {
 338                         DELAY(10);
 339                         break;
 340                 }
 341         }
 342
 343         if (i == BNX_TIMEOUT * 10) {
 344                 if_printf(&sc->arpcom.ac_if, "nvram read timed out\n");
 345                 return (1);
 346         }
 347
 348         /* Get result. */
 349         byte = CSR_READ_4(sc, BGE_NVRAM_RDDATA);
 350
 351         *dest = (bswap32(byte) >> ((addr % 4) * 8)) & 0xFF;
 352
 353         /* Disable access. */
 354         CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access);
 355
 356         /* Unlock. */
 357         CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_CLR1);
 358         CSR_READ_4(sc, BGE_NVRAM_SWARB);
 359
 360         return (0);
 361 }
 362
 363 /*
 364  * Read a sequence of bytes from NVRAM.
 365  */
 366 static int
 367 bnx_read_nvram(struct bnx_softc *sc, caddr_t dest, int off, int cnt)
 368 {
 369         int err = 0, i;
 370         uint8_t byte = 0;
 371
 372         if (sc->bnx_asicrev != BGE_ASICREV_BCM5906)
 373                 return (1);
 374
 375         for (i = 0; i < cnt; i++) {
 376                 err = bnx_nvram_getbyte(sc, off + i, &byte);
 377                 if (err)
 378                         break;
 379                 *(dest + i) = byte;
 380         }
 381
 382         return (err ? 1 : 0);
 383 }
 384
 385 /*
 386  * Read a byte of data stored in the EEPROM at address 'addr.' The
 387  * BCM570x supports both the traditional bitbang interface and an
 388  * auto access interface for reading the EEPROM. We use the auto
 389  * access method.
 390  */
 391 static uint8_t
 392 bnx_eeprom_getbyte(struct bnx_softc *sc, uint32_t addr, uint8_t *dest)
 393 {
 394         int i;
 395         uint32_t byte = 0;
 396
 397         /*
 398          * Enable use of auto EEPROM access so we can avoid
 399          * having to use the bitbang method.
 400          */
 401         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM);
 402
 403         /* Reset the EEPROM, load the clock period. */
 404         CSR_WRITE_4(sc, BGE_EE_ADDR,
 405             BGE_EEADDR_RESET|BGE_EEHALFCLK(BGE_HALFCLK_384SCL));
 406         DELAY(20);
 407
 408         /* Issue the read EEPROM command. */
 409         CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr);
 410
 411         /* Wait for completion */
 412         for(i = 0; i < BNX_TIMEOUT * 10; i++) {
 413                 DELAY(10);
 414                 if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE)
 415                         break;
 416         }
 417
 418         if (i == BNX_TIMEOUT) {
 419                 if_printf(&sc->arpcom.ac_if, "eeprom read timed out\n");
 420                 return(1);
 421         }
 422
 423         /* Get result. */
 424         byte = CSR_READ_4(sc, BGE_EE_DATA);
 425
 426         *dest = (byte >> ((addr % 4) * 8)) & 0xFF;
 427
 428         return(0);
 429 }
 430
 431 /*
 432  * Read a sequence of bytes from the EEPROM.
 433  */
 434 static int
 435 bnx_read_eeprom(struct bnx_softc *sc, caddr_t dest, uint32_t off, size_t len)
 436 {
 437         size_t i;
 438         int err;
 439         uint8_t byte;
 440
 441         for (byte = 0, err = 0, i = 0; i < len; i++) {
 442                 err = bnx_eeprom_getbyte(sc, off + i, &byte);
 443                 if (err)
 444                         break;
 445                 *(dest + i) = byte;
 446         }
 447
 448         return(err ? 1 : 0);
 449 }
 450
 451 static int
 452 bnx_miibus_readreg(device_t dev, int phy, int reg)
 453 {
 454         struct bnx_softc *sc = device_get_softc(dev);
 455         uint32_t val;
 456         int i;
 457
 458         KASSERT(phy == sc->bnx_phyno,
 459             ("invalid phyno %d, should be %d", phy, sc->bnx_phyno));
 460
 461         /* Clear the autopoll bit if set, otherwise may trigger PCI errors. */
 462         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 463                 CSR_WRITE_4(sc, BGE_MI_MODE,
 464                     sc->bnx_mi_mode & ~BGE_MIMODE_AUTOPOLL);
 465                 DELAY(80);
 466         }
 467
 468         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ | BGE_MICOMM_BUSY |
 469             BGE_MIPHY(phy) | BGE_MIREG(reg));
 470
 471         /* Poll for the PHY register access to complete. */
 472         for (i = 0; i < BNX_TIMEOUT; i++) {
 473                 DELAY(10);
 474                 val = CSR_READ_4(sc, BGE_MI_COMM);
 475                 if ((val & BGE_MICOMM_BUSY) == 0) {
 476                         DELAY(5);
 477                         val = CSR_READ_4(sc, BGE_MI_COMM);
 478                         break;
 479                 }
 480         }
 481         if (i == BNX_TIMEOUT) {
 482                 if_printf(&sc->arpcom.ac_if, "PHY read timed out "
 483                     "(phy %d, reg %d, val 0x%08x)\n", phy, reg, val);
 484                 val = 0;
 485         }
 486
 487         /* Restore the autopoll bit if necessary. */
 488         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 489                 CSR_WRITE_4(sc, BGE_MI_MODE, sc->bnx_mi_mode);
 490                 DELAY(80);
 491         }
 492
 493         if (val & BGE_MICOMM_READFAIL)
 494                 return 0;
 495
 496         return (val & 0xFFFF);
 497 }
 498
 499 static int
 500 bnx_miibus_writereg(device_t dev, int phy, int reg, int val)
 501 {
 502         struct bnx_softc *sc = device_get_softc(dev);
 503         int i;
 504
 505         KASSERT(phy == sc->bnx_phyno,
 506             ("invalid phyno %d, should be %d", phy, sc->bnx_phyno));
 507
 508         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
 509             (reg == BRGPHY_MII_1000CTL || reg == BRGPHY_MII_AUXCTL))
 510                return 0;
 511
 512         /* Clear the autopoll bit if set, otherwise may trigger PCI errors. */
 513         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 514                 CSR_WRITE_4(sc, BGE_MI_MODE,
 515                     sc->bnx_mi_mode & ~BGE_MIMODE_AUTOPOLL);
 516                 DELAY(80);
 517         }
 518
 519         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE | BGE_MICOMM_BUSY |
 520             BGE_MIPHY(phy) | BGE_MIREG(reg) | val);
 521
 522         for (i = 0; i < BNX_TIMEOUT; i++) {
 523                 DELAY(10);
 524                 if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY)) {
 525                         DELAY(5);
 526                         CSR_READ_4(sc, BGE_MI_COMM); /* dummy read */
 527                         break;
 528                 }
 529         }
 530         if (i == BNX_TIMEOUT) {
 531                 if_printf(&sc->arpcom.ac_if, "PHY write timed out "
 532                     "(phy %d, reg %d, val %d)\n", phy, reg, val);
 533         }
 534
 535         /* Restore the autopoll bit if necessary. */
 536         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 537                 CSR_WRITE_4(sc, BGE_MI_MODE, sc->bnx_mi_mode);
 538                 DELAY(80);
 539         }
 540
 541         return 0;
 542 }
 543
 544 static void
 545 bnx_miibus_statchg(device_t dev)
 546 {
 547         struct bnx_softc *sc;
 548         struct mii_data *mii;
 549
 550         sc = device_get_softc(dev);
 551         mii = device_get_softc(sc->bnx_miibus);
 552
 553         if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
 554             (IFM_ACTIVE | IFM_AVALID)) {
 555                 switch (IFM_SUBTYPE(mii->mii_media_active)) {
 556                 case IFM_10_T:
 557                 case IFM_100_TX:
 558                         sc->bnx_link = 1;
 559                         break;
 560                 case IFM_1000_T:
 561                 case IFM_1000_SX:
 562                 case IFM_2500_SX:
 563                         if (sc->bnx_asicrev != BGE_ASICREV_BCM5906)
 564                                 sc->bnx_link = 1;
 565                         else
 566                                 sc->bnx_link = 0;
 567                         break;
 568                 default:
 569                         sc->bnx_link = 0;
 570                         break;
 571                 }
 572         } else {
 573                 sc->bnx_link = 0;
 574         }
 575         if (sc->bnx_link == 0)
 576                 return;
 577
 578         BNX_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE);
 579         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T ||
 580             IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) {
 581                 BNX_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII);
 582         } else {
 583                 BNX_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII);
 584         }
 585
 586         if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
 587                 BNX_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 588         } else {
 589                 BNX_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 590         }
 591 }
 592
 593 /*
 594  * Memory management for jumbo frames.
 595  */
 596 static int
 597 bnx_alloc_jumbo_mem(struct bnx_softc *sc)
 598 {
 599         struct ifnet *ifp = &sc->arpcom.ac_if;
 600         struct bnx_jslot *entry;
 601         uint8_t *ptr;
 602         bus_addr_t paddr;
 603         int i, error;
 604
 605         /*
 606          * Create tag for jumbo mbufs.
 607          * This is really a bit of a kludge. We allocate a special
 608          * jumbo buffer pool which (thanks to the way our DMA
 609          * memory allocation works) will consist of contiguous
 610          * pages. This means that even though a jumbo buffer might
 611          * be larger than a page size, we don't really need to
 612          * map it into more than one DMA segment. However, the
 613          * default mbuf tag will result in multi-segment mappings,
 614          * so we have to create a special jumbo mbuf tag that
 615          * lets us get away with mapping the jumbo buffers as
 616          * a single segment. I think eventually the driver should
 617          * be changed so that it uses ordinary mbufs and cluster
 618          * buffers, i.e. jumbo frames can span multiple DMA
 619          * descriptors. But that's a project for another day.
 620          */
 621
 622         /*
 623          * Create DMA stuffs for jumbo RX ring.
 624          */
 625         error = bnx_dma_block_alloc(sc, BGE_JUMBO_RX_RING_SZ,
 626                                     &sc->bnx_cdata.bnx_rx_jumbo_ring_tag,
 627                                     &sc->bnx_cdata.bnx_rx_jumbo_ring_map,
 628                                     (void *)&sc->bnx_ldata.bnx_rx_jumbo_ring,
 629                                     &sc->bnx_ldata.bnx_rx_jumbo_ring_paddr);
 630         if (error) {
 631                 if_printf(ifp, "could not create jumbo RX ring\n");
 632                 return error;
 633         }
 634
 635         /*
 636          * Create DMA stuffs for jumbo buffer block.
 637          */
 638         error = bnx_dma_block_alloc(sc, BNX_JMEM,
 639                                     &sc->bnx_cdata.bnx_jumbo_tag,
 640                                     &sc->bnx_cdata.bnx_jumbo_map,
 641                                     (void **)&sc->bnx_ldata.bnx_jumbo_buf,
 642                                     &paddr);
 643         if (error) {
 644                 if_printf(ifp, "could not create jumbo buffer\n");
 645                 return error;
 646         }
 647
 648         SLIST_INIT(&sc->bnx_jfree_listhead);
 649
 650         /*
 651          * Now divide it up into 9K pieces and save the addresses
 652          * in an array. Note that we play an evil trick here by using
 653          * the first few bytes in the buffer to hold the the address
 654          * of the softc structure for this interface. This is because
 655          * bnx_jfree() needs it, but it is called by the mbuf management
 656          * code which will not pass it to us explicitly.
 657          */
 658         for (i = 0, ptr = sc->bnx_ldata.bnx_jumbo_buf; i < BNX_JSLOTS; i++) {
 659                 entry = &sc->bnx_cdata.bnx_jslots[i];
 660                 entry->bnx_sc = sc;
 661                 entry->bnx_buf = ptr;
 662                 entry->bnx_paddr = paddr;
 663                 entry->bnx_inuse = 0;
 664                 entry->bnx_slot = i;
 665                 SLIST_INSERT_HEAD(&sc->bnx_jfree_listhead, entry, jslot_link);
 666
 667                 ptr += BNX_JLEN;
 668                 paddr += BNX_JLEN;
 669         }
 670         return 0;
 671 }
 672
 673 static void
 674 bnx_free_jumbo_mem(struct bnx_softc *sc)
 675 {
 676         /* Destroy jumbo RX ring. */
 677         bnx_dma_block_free(sc->bnx_cdata.bnx_rx_jumbo_ring_tag,
 678                            sc->bnx_cdata.bnx_rx_jumbo_ring_map,
 679                            sc->bnx_ldata.bnx_rx_jumbo_ring);
 680
 681         /* Destroy jumbo buffer block. */
 682         bnx_dma_block_free(sc->bnx_cdata.bnx_jumbo_tag,
 683                            sc->bnx_cdata.bnx_jumbo_map,
 684                            sc->bnx_ldata.bnx_jumbo_buf);
 685 }
 686
 687 /*
 688  * Allocate a jumbo buffer.
 689  */
 690 static struct bnx_jslot *
 691 bnx_jalloc(struct bnx_softc *sc)
 692 {
 693         struct bnx_jslot *entry;
 694
 695         lwkt_serialize_enter(&sc->bnx_jslot_serializer);
 696         entry = SLIST_FIRST(&sc->bnx_jfree_listhead);
 697         if (entry) {
 698                 SLIST_REMOVE_HEAD(&sc->bnx_jfree_listhead, jslot_link);
 699                 entry->bnx_inuse = 1;
 700         } else {
 701                 if_printf(&sc->arpcom.ac_if, "no free jumbo buffers\n");
 702         }
 703         lwkt_serialize_exit(&sc->bnx_jslot_serializer);
 704         return(entry);
 705 }
 706
 707 /*
 708  * Adjust usage count on a jumbo buffer.
 709  */
 710 static void
 711 bnx_jref(void *arg)
 712 {
 713         struct bnx_jslot *entry = (struct bnx_jslot *)arg;
 714         struct bnx_softc *sc = entry->bnx_sc;
 715
 716         if (sc == NULL)
 717                 panic("bnx_jref: can't find softc pointer!");
 718
 719         if (&sc->bnx_cdata.bnx_jslots[entry->bnx_slot] != entry) {
 720                 panic("bnx_jref: asked to reference buffer "
 721                     "that we don't manage!");
 722         } else if (entry->bnx_inuse == 0) {
 723                 panic("bnx_jref: buffer already free!");
 724         } else {
 725                 atomic_add_int(&entry->bnx_inuse, 1);
 726         }
 727 }
 728
 729 /*
 730  * Release a jumbo buffer.
 731  */
 732 static void
 733 bnx_jfree(void *arg)
 734 {
 735         struct bnx_jslot *entry = (struct bnx_jslot *)arg;
 736         struct bnx_softc *sc = entry->bnx_sc;
 737
 738         if (sc == NULL)
 739                 panic("bnx_jfree: can't find softc pointer!");
 740
 741         if (&sc->bnx_cdata.bnx_jslots[entry->bnx_slot] != entry) {
 742                 panic("bnx_jfree: asked to free buffer that we don't manage!");
 743         } else if (entry->bnx_inuse == 0) {
 744                 panic("bnx_jfree: buffer already free!");
 745         } else {
 746                 /*
 747                  * Possible MP race to 0, use the serializer.  The atomic insn
 748                  * is still needed for races against bnx_jref().
 749                  */
 750                 lwkt_serialize_enter(&sc->bnx_jslot_serializer);
 751                 atomic_subtract_int(&entry->bnx_inuse, 1);
 752                 if (entry->bnx_inuse == 0) {
 753                         SLIST_INSERT_HEAD(&sc->bnx_jfree_listhead,
 754                                           entry, jslot_link);
 755                 }
 756                 lwkt_serialize_exit(&sc->bnx_jslot_serializer);
 757         }
 758 }
 759
 760
 761 /*
 762  * Intialize a standard receive ring descriptor.
 763  */
 764 static int
 765 bnx_newbuf_std(struct bnx_softc *sc, int i, int init)
 766 {
 767         struct mbuf *m_new = NULL;
 768         bus_dma_segment_t seg;
 769         bus_dmamap_t map;
 770         int error, nsegs;
 771
 772         m_new = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
 773         if (m_new == NULL)
 774                 return ENOBUFS;
 775         m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
 776         m_adj(m_new, ETHER_ALIGN);
 777
 778         error = bus_dmamap_load_mbuf_segment(sc->bnx_cdata.bnx_rx_mtag,
 779                         sc->bnx_cdata.bnx_rx_tmpmap, m_new,
 780                         &seg, 1, &nsegs, BUS_DMA_NOWAIT);
 781         if (error) {
 782                 m_freem(m_new);
 783                 return error;
 784         }
 785
 786         if (!init) {
 787                 bus_dmamap_sync(sc->bnx_cdata.bnx_rx_mtag,
 788                                 sc->bnx_cdata.bnx_rx_std_dmamap[i],
 789                                 BUS_DMASYNC_POSTREAD);
 790                 bus_dmamap_unload(sc->bnx_cdata.bnx_rx_mtag,
 791                         sc->bnx_cdata.bnx_rx_std_dmamap[i]);
 792         }
 793
 794         map = sc->bnx_cdata.bnx_rx_tmpmap;
 795         sc->bnx_cdata.bnx_rx_tmpmap = sc->bnx_cdata.bnx_rx_std_dmamap[i];
 796         sc->bnx_cdata.bnx_rx_std_dmamap[i] = map;
 797
 798         sc->bnx_cdata.bnx_rx_std_chain[i].bnx_mbuf = m_new;
 799         sc->bnx_cdata.bnx_rx_std_chain[i].bnx_paddr = seg.ds_addr;
 800
 801         bnx_setup_rxdesc_std(sc, i);
 802         return 0;
 803 }
 804
 805 static void
 806 bnx_setup_rxdesc_std(struct bnx_softc *sc, int i)
 807 {
 808         struct bnx_rxchain *rc;
 809         struct bge_rx_bd *r;
 810
 811         rc = &sc->bnx_cdata.bnx_rx_std_chain[i];
 812         r = &sc->bnx_ldata.bnx_rx_std_ring[i];
 813
 814         r->bge_addr.bge_addr_lo = BGE_ADDR_LO(rc->bnx_paddr);
 815         r->bge_addr.bge_addr_hi = BGE_ADDR_HI(rc->bnx_paddr);
 816         r->bge_len = rc->bnx_mbuf->m_len;
 817         r->bge_idx = i;
 818         r->bge_flags = BGE_RXBDFLAG_END;
 819 }
 820
 821 /*
 822  * Initialize a jumbo receive ring descriptor. This allocates
 823  * a jumbo buffer from the pool managed internally by the driver.
 824  */
 825 static int
 826 bnx_newbuf_jumbo(struct bnx_softc *sc, int i, int init)
 827 {
 828         struct mbuf *m_new = NULL;
 829         struct bnx_jslot *buf;
 830         bus_addr_t paddr;
 831
 832         /* Allocate the mbuf. */
 833         MGETHDR(m_new, init ? MB_WAIT : MB_DONTWAIT, MT_DATA);
 834         if (m_new == NULL)
 835                 return ENOBUFS;
 836
 837         /* Allocate the jumbo buffer */
 838         buf = bnx_jalloc(sc);
 839         if (buf == NULL) {
 840                 m_freem(m_new);
 841                 return ENOBUFS;
 842         }
 843
 844         /* Attach the buffer to the mbuf. */
 845         m_new->m_ext.ext_arg = buf;
 846         m_new->m_ext.ext_buf = buf->bnx_buf;
 847         m_new->m_ext.ext_free = bnx_jfree;
 848         m_new->m_ext.ext_ref = bnx_jref;
 849         m_new->m_ext.ext_size = BNX_JUMBO_FRAMELEN;
 850
 851         m_new->m_flags |= M_EXT;
 852
 853         m_new->m_data = m_new->m_ext.ext_buf;
 854         m_new->m_len = m_new->m_pkthdr.len = m_new->m_ext.ext_size;
 855
 856         paddr = buf->bnx_paddr;
 857         m_adj(m_new, ETHER_ALIGN);
 858         paddr += ETHER_ALIGN;
 859
 860         /* Save necessary information */
 861         sc->bnx_cdata.bnx_rx_jumbo_chain[i].bnx_mbuf = m_new;
 862         sc->bnx_cdata.bnx_rx_jumbo_chain[i].bnx_paddr = paddr;
 863
 864         /* Set up the descriptor. */
 865         bnx_setup_rxdesc_jumbo(sc, i);
 866         return 0;
 867 }
 868
 869 static void
 870 bnx_setup_rxdesc_jumbo(struct bnx_softc *sc, int i)
 871 {
 872         struct bge_rx_bd *r;
 873         struct bnx_rxchain *rc;
 874
 875         r = &sc->bnx_ldata.bnx_rx_jumbo_ring[i];
 876         rc = &sc->bnx_cdata.bnx_rx_jumbo_chain[i];
 877
 878         r->bge_addr.bge_addr_lo = BGE_ADDR_LO(rc->bnx_paddr);
 879         r->bge_addr.bge_addr_hi = BGE_ADDR_HI(rc->bnx_paddr);
 880         r->bge_len = rc->bnx_mbuf->m_len;
 881         r->bge_idx = i;
 882         r->bge_flags = BGE_RXBDFLAG_END|BGE_RXBDFLAG_JUMBO_RING;
 883 }
 884
 885 static int
 886 bnx_init_rx_ring_std(struct bnx_softc *sc)
 887 {
 888         int i, error;
 889
 890         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
 891                 error = bnx_newbuf_std(sc, i, 1);
 892                 if (error)
 893                         return error;
 894         };
 895
 896         sc->bnx_std = BGE_STD_RX_RING_CNT - 1;
 897         bnx_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bnx_std);
 898
 899         return(0);
 900 }
 901
 902 static void
 903 bnx_free_rx_ring_std(struct bnx_softc *sc)
 904 {
 905         int i;
 906
 907         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
 908                 struct bnx_rxchain *rc = &sc->bnx_cdata.bnx_rx_std_chain[i];
 909
 910                 if (rc->bnx_mbuf != NULL) {
 911                         bus_dmamap_unload(sc->bnx_cdata.bnx_rx_mtag,
 912                                           sc->bnx_cdata.bnx_rx_std_dmamap[i]);
 913                         m_freem(rc->bnx_mbuf);
 914                         rc->bnx_mbuf = NULL;
 915                 }
 916                 bzero(&sc->bnx_ldata.bnx_rx_std_ring[i],
 917                     sizeof(struct bge_rx_bd));
 918         }
 919 }
 920
 921 static int
 922 bnx_init_rx_ring_jumbo(struct bnx_softc *sc)
 923 {
 924         struct bge_rcb *rcb;
 925         int i, error;
 926
 927         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 928                 error = bnx_newbuf_jumbo(sc, i, 1);
 929                 if (error)
 930                         return error;
 931         };
 932
 933         sc->bnx_jumbo = BGE_JUMBO_RX_RING_CNT - 1;
 934
 935         rcb = &sc->bnx_ldata.bnx_info.bnx_jumbo_rx_rcb;
 936         rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0, 0);
 937         CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
 938
 939         bnx_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bnx_jumbo);
 940
 941         return(0);
 942 }
 943
 944 static void
 945 bnx_free_rx_ring_jumbo(struct bnx_softc *sc)
 946 {
 947         int i;
 948
 949         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 950                 struct bnx_rxchain *rc = &sc->bnx_cdata.bnx_rx_jumbo_chain[i];
 951
 952                 if (rc->bnx_mbuf != NULL) {
 953                         m_freem(rc->bnx_mbuf);
 954                         rc->bnx_mbuf = NULL;
 955                 }
 956                 bzero(&sc->bnx_ldata.bnx_rx_jumbo_ring[i],
 957                     sizeof(struct bge_rx_bd));
 958         }
 959 }
 960
 961 static void
 962 bnx_free_tx_ring(struct bnx_softc *sc)
 963 {
 964         int i;
 965
 966         for (i = 0; i < BGE_TX_RING_CNT; i++) {
 967                 if (sc->bnx_cdata.bnx_tx_chain[i] != NULL) {
 968                         bus_dmamap_unload(sc->bnx_cdata.bnx_tx_mtag,
 969                                           sc->bnx_cdata.bnx_tx_dmamap[i]);
 970                         m_freem(sc->bnx_cdata.bnx_tx_chain[i]);
 971                         sc->bnx_cdata.bnx_tx_chain[i] = NULL;
 972                 }
 973                 bzero(&sc->bnx_ldata.bnx_tx_ring[i],
 974                     sizeof(struct bge_tx_bd));
 975         }
 976 }
 977
 978 static int
 979 bnx_init_tx_ring(struct bnx_softc *sc)
 980 {
 981         sc->bnx_txcnt = 0;
 982         sc->bnx_tx_saved_considx = 0;
 983         sc->bnx_tx_prodidx = 0;
 984
 985         /* Initialize transmit producer index for host-memory send ring. */
 986         bnx_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bnx_tx_prodidx);
 987         bnx_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
 988
 989         return(0);
 990 }
 991
 992 static void
 993 bnx_setmulti(struct bnx_softc *sc)
 994 {
 995         struct ifnet *ifp;
 996         struct ifmultiaddr *ifma;
 997         uint32_t hashes[4] = { 0, 0, 0, 0 };
 998         int h, i;
 999
1000         ifp = &sc->arpcom.ac_if;
1001
1002         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
1003                 for (i = 0; i < 4; i++)
1004                         CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0xFFFFFFFF);
1005                 return;
1006         }
1007
1008         /* First, zot all the existing filters. */
1009         for (i = 0; i < 4; i++)
1010                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0);
1011
1012         /* Now program new ones. */
1013         TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1014                 if (ifma->ifma_addr->sa_family != AF_LINK)
1015                         continue;
1016                 h = ether_crc32_le(
1017                     LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1018                     ETHER_ADDR_LEN) & 0x7f;
1019                 hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F);
1020         }
1021
1022         for (i = 0; i < 4; i++)
1023                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]);
1024 }
1025
1026 /*
1027  * Do endian, PCI and DMA initialization. Also check the on-board ROM
1028  * self-test results.
1029  */
1030 static int
1031 bnx_chipinit(struct bnx_softc *sc)
1032 {
1033         uint32_t dma_rw_ctl, mode_ctl;
1034         int i;
1035
1036         /* Set endian type before we access any non-PCI registers. */
1037         pci_write_config(sc->bnx_dev, BGE_PCI_MISC_CTL,
1038             BGE_INIT | BGE_PCIMISCCTL_TAGGED_STATUS, 4);
1039
1040         /* Clear the MAC control register */
1041         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
1042
1043         /*
1044          * Clear the MAC statistics block in the NIC's
1045          * internal memory.
1046          */
1047         for (i = BGE_STATS_BLOCK;
1048             i < BGE_STATS_BLOCK_END + 1; i += sizeof(uint32_t))
1049                 BNX_MEMWIN_WRITE(sc, i, 0);
1050
1051         for (i = BGE_STATUS_BLOCK;
1052             i < BGE_STATUS_BLOCK_END + 1; i += sizeof(uint32_t))
1053                 BNX_MEMWIN_WRITE(sc, i, 0);
1054
1055         if (BNX_IS_57765_FAMILY(sc)) {
1056                 uint32_t val;
1057
1058                 if (sc->bnx_chipid == BGE_CHIPID_BCM57765_A0) {
1059                         mode_ctl = CSR_READ_4(sc, BGE_MODE_CTL);
1060                         val = mode_ctl & ~BGE_MODECTL_PCIE_PORTS;
1061
1062                         /* Access the lower 1K of PL PCI-E block registers. */
1063                         CSR_WRITE_4(sc, BGE_MODE_CTL,
1064                             val | BGE_MODECTL_PCIE_PL_SEL);
1065
1066                         val = CSR_READ_4(sc, BGE_PCIE_PL_LO_PHYCTL5);
1067                         val |= BGE_PCIE_PL_LO_PHYCTL5_DIS_L2CLKREQ;
1068                         CSR_WRITE_4(sc, BGE_PCIE_PL_LO_PHYCTL5, val);
1069
1070                         CSR_WRITE_4(sc, BGE_MODE_CTL, mode_ctl);
1071                 }
1072                 if (sc->bnx_chiprev != BGE_CHIPREV_57765_AX) {
1073                         mode_ctl = CSR_READ_4(sc, BGE_MODE_CTL);
1074                         val = mode_ctl & ~BGE_MODECTL_PCIE_PORTS;
1075
1076                         /* Access the lower 1K of DL PCI-E block registers. */
1077                         CSR_WRITE_4(sc, BGE_MODE_CTL,
1078                             val | BGE_MODECTL_PCIE_DL_SEL);
1079
1080                         val = CSR_READ_4(sc, BGE_PCIE_DL_LO_FTSMAX);
1081                         val &= ~BGE_PCIE_DL_LO_FTSMAX_MASK;
1082                         val |= BGE_PCIE_DL_LO_FTSMAX_VAL;
1083                         CSR_WRITE_4(sc, BGE_PCIE_DL_LO_FTSMAX, val);
1084
1085                         CSR_WRITE_4(sc, BGE_MODE_CTL, mode_ctl);
1086                 }
1087
1088                 val = CSR_READ_4(sc, BGE_CPMU_LSPD_10MB_CLK);
1089                 val &= ~BGE_CPMU_LSPD_10MB_MACCLK_MASK;
1090                 val |= BGE_CPMU_LSPD_10MB_MACCLK_6_25;
1091                 CSR_WRITE_4(sc, BGE_CPMU_LSPD_10MB_CLK, val);
1092         }
1093
1094         /* Set up the PCI DMA control register. */
1095         dma_rw_ctl = BGE_PCI_READ_CMD | BGE_PCI_WRITE_CMD |
1096             (0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
1097
1098         if (BNX_IS_57765_PLUS(sc)) {
1099                 dma_rw_ctl &= ~BGE_PCIDMARWCTL_DIS_CACHE_ALIGNMENT;
1100                 if (sc->bnx_chipid == BGE_CHIPID_BCM57765_A0)
1101                         dma_rw_ctl &= ~BGE_PCIDMARWCTL_CRDRDR_RDMA_MRRS_MSK;
1102                 /*
1103                  * Enable HW workaround for controllers that misinterpret
1104                  * a status tag update and leave interrupts permanently
1105                  * disabled.
1106                  */
1107                 if (sc->bnx_asicrev != BGE_ASICREV_BCM5717 &&
1108                     sc->bnx_asicrev != BGE_ASICREV_BCM57765)
1109                         dma_rw_ctl |= BGE_PCIDMARWCTL_TAGGED_STATUS_WA;
1110         }
1111         pci_write_config(sc->bnx_dev, BGE_PCI_DMA_RW_CTL, dma_rw_ctl, 4);
1112
1113         /*
1114          * Set up general mode register.
1115          */
1116         mode_ctl = bnx_dma_swap_options(sc) | BGE_MODECTL_MAC_ATTN_INTR |
1117             BGE_MODECTL_HOST_SEND_BDS | BGE_MODECTL_TX_NO_PHDR_CSUM;
1118         CSR_WRITE_4(sc, BGE_MODE_CTL, mode_ctl);
1119
1120         /*
1121          * Disable memory write invalidate.  Apparently it is not supported
1122          * properly by these devices.  Also ensure that INTx isn't disabled,
1123          * as these chips need it even when using MSI.
1124          */
1125         PCI_CLRBIT(sc->bnx_dev, BGE_PCI_CMD,
1126             (PCIM_CMD_MWRICEN | PCIM_CMD_INTxDIS), 4);
1127
1128         /* Set the timer prescaler (always 66Mhz) */
1129         CSR_WRITE_4(sc, BGE_MISC_CFG, 65 << 1/*BGE_32BITTIME_66MHZ*/);
1130
1131         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
1132                 DELAY(40);      /* XXX */
1133
1134                 /* Put PHY into ready state */
1135                 BNX_CLRBIT(sc, BGE_MISC_CFG, BGE_MISCCFG_EPHY_IDDQ);
1136                 CSR_READ_4(sc, BGE_MISC_CFG); /* Flush */
1137                 DELAY(40);
1138         }
1139
1140         return(0);
1141 }
1142
1143 static int
1144 bnx_blockinit(struct bnx_softc *sc)
1145 {
1146         struct bge_rcb *rcb;
1147         bus_size_t vrcb;
1148         bge_hostaddr taddr;
1149         uint32_t val;
1150         int i, limit;
1151
1152         /*
1153          * Initialize the memory window pointer register so that
1154          * we can access the first 32K of internal NIC RAM. This will
1155          * allow us to set up the TX send ring RCBs and the RX return
1156          * ring RCBs, plus other things which live in NIC memory.
1157          */
1158         CSR_WRITE_4(sc, BGE_PCI_MEMWIN_BASEADDR, 0);
1159
1160         /* Configure mbuf pool watermarks */
1161         if (BNX_IS_57765_PLUS(sc)) {
1162                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1163                 if (sc->arpcom.ac_if.if_mtu > ETHERMTU) {
1164                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x7e);
1165                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0xea);
1166                 } else {
1167                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x2a);
1168                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0xa0);
1169                 }
1170         } else if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
1171                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1172                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x04);
1173                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x10);
1174         } else {
1175                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1176                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10);
1177                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
1178         }
1179
1180         /* Configure DMA resource watermarks */
1181         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5);
1182         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10);
1183
1184         /* Enable buffer manager */
1185         val = BGE_BMANMODE_ENABLE | BGE_BMANMODE_LOMBUF_ATTN;
1186         /*
1187          * Change the arbitration algorithm of TXMBUF read request to
1188          * round-robin instead of priority based for BCM5719.  When
1189          * TXFIFO is almost empty, RDMA will hold its request until
1190          * TXFIFO is not almost empty.
1191          */
1192         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719)
1193                 val |= BGE_BMANMODE_NO_TX_UNDERRUN;
1194         CSR_WRITE_4(sc, BGE_BMAN_MODE, val);
1195
1196         /* Poll for buffer manager start indication */
1197         for (i = 0; i < BNX_TIMEOUT; i++) {
1198                 if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE)
1199                         break;
1200                 DELAY(10);
1201         }
1202
1203         if (i == BNX_TIMEOUT) {
1204                 if_printf(&sc->arpcom.ac_if,
1205                           "buffer manager failed to start\n");
1206                 return(ENXIO);
1207         }
1208
1209         /* Enable flow-through queues */
1210         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
1211         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
1212
1213         /* Wait until queue initialization is complete */
1214         for (i = 0; i < BNX_TIMEOUT; i++) {
1215                 if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0)
1216                         break;
1217                 DELAY(10);
1218         }
1219
1220         if (i == BNX_TIMEOUT) {
1221                 if_printf(&sc->arpcom.ac_if,
1222                           "flow-through queue init failed\n");
1223                 return(ENXIO);
1224         }
1225
1226         /*
1227          * Summary of rings supported by the controller:
1228          *
1229          * Standard Receive Producer Ring
1230          * - This ring is used to feed receive buffers for "standard"
1231          *   sized frames (typically 1536 bytes) to the controller.
1232          *
1233          * Jumbo Receive Producer Ring
1234          * - This ring is used to feed receive buffers for jumbo sized
1235          *   frames (i.e. anything bigger than the "standard" frames)
1236          *   to the controller.
1237          *
1238          * Mini Receive Producer Ring
1239          * - This ring is used to feed receive buffers for "mini"
1240          *   sized frames to the controller.
1241          * - This feature required external memory for the controller
1242          *   but was never used in a production system.  Should always
1243          *   be disabled.
1244          *
1245          * Receive Return Ring
1246          * - After the controller has placed an incoming frame into a
1247          *   receive buffer that buffer is moved into a receive return
1248          *   ring.  The driver is then responsible to passing the
1249          *   buffer up to the stack.  Many versions of the controller
1250          *   support multiple RR rings.
1251          *
1252          * Send Ring
1253          * - This ring is used for outgoing frames.  Many versions of
1254          *   the controller support multiple send rings.
1255          */
1256
1257         /* Initialize the standard receive producer ring control block. */
1258         rcb = &sc->bnx_ldata.bnx_info.bnx_std_rx_rcb;
1259         rcb->bge_hostaddr.bge_addr_lo =
1260             BGE_ADDR_LO(sc->bnx_ldata.bnx_rx_std_ring_paddr);
1261         rcb->bge_hostaddr.bge_addr_hi =
1262             BGE_ADDR_HI(sc->bnx_ldata.bnx_rx_std_ring_paddr);
1263         if (BNX_IS_57765_PLUS(sc)) {
1264                 /*
1265                  * Bits 31-16: Programmable ring size (2048, 1024, 512, .., 32)
1266                  * Bits 15-2 : Maximum RX frame size
1267                  * Bit 1     : 1 = Ring Disabled, 0 = Ring ENabled
1268                  * Bit 0     : Reserved
1269                  */
1270                 rcb->bge_maxlen_flags =
1271                     BGE_RCB_MAXLEN_FLAGS(512, BNX_MAX_FRAMELEN << 2);
1272         } else {
1273                 /*
1274                  * Bits 31-16: Programmable ring size (512, 256, 128, 64, 32)
1275                  * Bits 15-2 : Reserved (should be 0)
1276                  * Bit 1     : 1 = Ring Disabled, 0 = Ring Enabled
1277                  * Bit 0     : Reserved
1278                  */
1279                 rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0);
1280         }
1281         if (sc->bnx_asicrev == BGE_ASICREV_BCM5717 ||
1282             sc->bnx_asicrev == BGE_ASICREV_BCM5719 ||
1283             sc->bnx_asicrev == BGE_ASICREV_BCM5720)
1284                 rcb->bge_nicaddr = BGE_STD_RX_RINGS_5717;
1285         else
1286                 rcb->bge_nicaddr = BGE_STD_RX_RINGS;
1287         /* Write the standard receive producer ring control block. */
1288         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi);
1289         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo);
1290         CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
1291         CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr);
1292         /* Reset the standard receive producer ring producer index. */
1293         bnx_writembx(sc, BGE_MBX_RX_STD_PROD_LO, 0);
1294
1295         /*
1296          * Initialize the jumbo RX producer ring control
1297          * block.  We set the 'ring disabled' bit in the
1298          * flags field until we're actually ready to start
1299          * using this ring (i.e. once we set the MTU
1300          * high enough to require it).
1301          */
1302         if (BNX_IS_JUMBO_CAPABLE(sc)) {
1303                 rcb = &sc->bnx_ldata.bnx_info.bnx_jumbo_rx_rcb;
1304                 /* Get the jumbo receive producer ring RCB parameters. */
1305                 rcb->bge_hostaddr.bge_addr_lo =
1306                     BGE_ADDR_LO(sc->bnx_ldata.bnx_rx_jumbo_ring_paddr);
1307                 rcb->bge_hostaddr.bge_addr_hi =
1308                     BGE_ADDR_HI(sc->bnx_ldata.bnx_rx_jumbo_ring_paddr);
1309                 rcb->bge_maxlen_flags =
1310                     BGE_RCB_MAXLEN_FLAGS(BNX_MAX_FRAMELEN,
1311                     BGE_RCB_FLAG_RING_DISABLED);
1312                 if (sc->bnx_asicrev == BGE_ASICREV_BCM5717 ||
1313                     sc->bnx_asicrev == BGE_ASICREV_BCM5719 ||
1314                     sc->bnx_asicrev == BGE_ASICREV_BCM5720)
1315                         rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS_5717;
1316                 else
1317                         rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS;
1318                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI,
1319                     rcb->bge_hostaddr.bge_addr_hi);
1320                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO,
1321                     rcb->bge_hostaddr.bge_addr_lo);
1322                 /* Program the jumbo receive producer ring RCB parameters. */
1323                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS,
1324                     rcb->bge_maxlen_flags);
1325                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr);
1326                 /* Reset the jumbo receive producer ring producer index. */
1327                 bnx_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0);
1328         }
1329
1330         /* Choose de-pipeline mode for BCM5906 A0, A1 and A2. */
1331         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
1332             (sc->bnx_chipid == BGE_CHIPID_BCM5906_A0 ||
1333              sc->bnx_chipid == BGE_CHIPID_BCM5906_A1 ||
1334              sc->bnx_chipid == BGE_CHIPID_BCM5906_A2)) {
1335                 CSR_WRITE_4(sc, BGE_ISO_PKT_TX,
1336                     (CSR_READ_4(sc, BGE_ISO_PKT_TX) & ~3) | 2);
1337         }
1338
1339         /*
1340          * The BD ring replenish thresholds control how often the
1341          * hardware fetches new BD's from the producer rings in host
1342          * memory.  Setting the value too low on a busy system can
1343          * starve the hardware and recue the throughpout.
1344          *
1345          * Set the BD ring replentish thresholds. The recommended
1346          * values are 1/8th the number of descriptors allocated to
1347          * each ring.
1348          */
1349         val = 8;
1350         CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, val);
1351         if (BNX_IS_JUMBO_CAPABLE(sc)) {
1352                 CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH,
1353                     BGE_JUMBO_RX_RING_CNT/8);
1354         }
1355         if (BNX_IS_57765_PLUS(sc)) {
1356                 CSR_WRITE_4(sc, BGE_STD_REPLENISH_LWM, 32);
1357                 CSR_WRITE_4(sc, BGE_JMB_REPLENISH_LWM, 16);
1358         }
1359
1360         /*
1361          * Disable all send rings by setting the 'ring disabled' bit
1362          * in the flags field of all the TX send ring control blocks,
1363          * located in NIC memory.
1364          */
1365         if (BNX_IS_5717_PLUS(sc))
1366                 limit = 4;
1367         else if (BNX_IS_57765_FAMILY(sc))
1368                 limit = 2;
1369         else
1370                 limit = 1;
1371         vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
1372         for (i = 0; i < limit; i++) {
1373                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1374                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED));
1375                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1376                 vrcb += sizeof(struct bge_rcb);
1377         }
1378
1379         /* Configure send ring RCB 0 (we use only the first ring) */
1380         vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
1381         BGE_HOSTADDR(taddr, sc->bnx_ldata.bnx_tx_ring_paddr);
1382         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
1383         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
1384         if (sc->bnx_asicrev == BGE_ASICREV_BCM5717 ||
1385             sc->bnx_asicrev == BGE_ASICREV_BCM5719 ||
1386             sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1387                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, BGE_SEND_RING_5717);
1388         } else {
1389                 RCB_WRITE_4(sc, vrcb, bge_nicaddr,
1390                     BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT));
1391         }
1392         RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1393             BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0));
1394
1395         /*
1396          * Disable all receive return rings by setting the
1397          * 'ring disabled' bit in the flags field of all the receive
1398          * return ring control blocks, located in NIC memory.
1399          */
1400         if (BNX_IS_5717_PLUS(sc)) {
1401                 /* Should be 17, use 16 until we get an SRAM map. */
1402                 limit = 16;
1403         } else if (BNX_IS_57765_FAMILY(sc)) {
1404                 limit = 4;
1405         } else {
1406                 limit = 1;
1407         }
1408         /* Disable all receive return rings. */
1409         vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
1410         for (i = 0; i < limit; i++) {
1411                 RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, 0);
1412                 RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, 0);
1413                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1414                     BGE_RCB_FLAG_RING_DISABLED);
1415                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1416                 bnx_writembx(sc, BGE_MBX_RX_CONS0_LO +
1417                     (i * (sizeof(uint64_t))), 0);
1418                 vrcb += sizeof(struct bge_rcb);
1419         }
1420
1421         /*
1422          * Set up receive return ring 0.  Note that the NIC address
1423          * for RX return rings is 0x0.  The return rings live entirely
1424          * within the host, so the nicaddr field in the RCB isn't used.
1425          */
1426         vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
1427         BGE_HOSTADDR(taddr, sc->bnx_ldata.bnx_rx_return_ring_paddr);
1428         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
1429         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
1430         RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1431         RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1432             BGE_RCB_MAXLEN_FLAGS(sc->bnx_return_ring_cnt, 0));
1433
1434         /* Set random backoff seed for TX */
1435         CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
1436             sc->arpcom.ac_enaddr[0] + sc->arpcom.ac_enaddr[1] +
1437             sc->arpcom.ac_enaddr[2] + sc->arpcom.ac_enaddr[3] +
1438             sc->arpcom.ac_enaddr[4] + sc->arpcom.ac_enaddr[5] +
1439             BGE_TX_BACKOFF_SEED_MASK);
1440
1441         /* Set inter-packet gap */
1442         val = 0x2620;
1443         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1444                 val |= CSR_READ_4(sc, BGE_TX_LENGTHS) &
1445                     (BGE_TXLEN_JMB_FRM_LEN_MSK | BGE_TXLEN_CNT_DN_VAL_MSK);
1446         }
1447         CSR_WRITE_4(sc, BGE_TX_LENGTHS, val);
1448
1449         /*
1450          * Specify which ring to use for packets that don't match
1451          * any RX rules.
1452          */
1453         CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08);
1454
1455         /*
1456          * Configure number of RX lists. One interrupt distribution
1457          * list, sixteen active lists, one bad frames class.
1458          */
1459         CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181);
1460
1461         /* Inialize RX list placement stats mask. */
1462         CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF);
1463         CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1);
1464
1465         /* Disable host coalescing until we get it set up */
1466         CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000);
1467
1468         /* Poll to make sure it's shut down. */
1469         for (i = 0; i < BNX_TIMEOUT; i++) {
1470                 if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE))
1471                         break;
1472                 DELAY(10);
1473         }
1474
1475         if (i == BNX_TIMEOUT) {
1476                 if_printf(&sc->arpcom.ac_if,
1477                           "host coalescing engine failed to idle\n");
1478                 return(ENXIO);
1479         }
1480
1481         /* Set up host coalescing defaults */
1482         CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bnx_rx_coal_ticks);
1483         CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bnx_tx_coal_ticks);
1484         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bnx_rx_coal_bds);
1485         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bnx_tx_coal_bds);
1486         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, sc->bnx_rx_coal_bds_int);
1487         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, sc->bnx_tx_coal_bds_int);
1488
1489         /* Set up address of status block */
1490         bzero(sc->bnx_ldata.bnx_status_block, BGE_STATUS_BLK_SZ);
1491         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI,
1492             BGE_ADDR_HI(sc->bnx_ldata.bnx_status_block_paddr));
1493         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO,
1494             BGE_ADDR_LO(sc->bnx_ldata.bnx_status_block_paddr));
1495
1496         /* Set up status block partail update size. */
1497         val = BGE_STATBLKSZ_32BYTE;
1498 #if 0
1499         /*
1500          * Does not seem to have visible effect in both
1501          * bulk data (1472B UDP datagram) and tiny data
1502          * (18B UDP datagram) TX tests.
1503          */
1504         val |= BGE_HCCMODE_CLRTICK_TX;
1505 #endif
1506         /* Turn on host coalescing state machine */
1507         CSR_WRITE_4(sc, BGE_HCC_MODE, val | BGE_HCCMODE_ENABLE);
1508
1509         /* Turn on RX BD completion state machine and enable attentions */
1510         CSR_WRITE_4(sc, BGE_RBDC_MODE,
1511             BGE_RBDCMODE_ENABLE|BGE_RBDCMODE_ATTN);
1512
1513         /* Turn on RX list placement state machine */
1514         CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
1515
1516         val = BGE_MACMODE_TXDMA_ENB | BGE_MACMODE_RXDMA_ENB |
1517             BGE_MACMODE_RX_STATS_CLEAR | BGE_MACMODE_TX_STATS_CLEAR |
1518             BGE_MACMODE_RX_STATS_ENB | BGE_MACMODE_TX_STATS_ENB |
1519             BGE_MACMODE_FRMHDR_DMA_ENB;
1520
1521         if (sc->bnx_flags & BNX_FLAG_TBI)
1522                 val |= BGE_PORTMODE_TBI;
1523         else if (sc->bnx_flags & BNX_FLAG_MII_SERDES)
1524                 val |= BGE_PORTMODE_GMII;
1525         else
1526                 val |= BGE_PORTMODE_MII;
1527
1528         /* Turn on DMA, clear stats */
1529         CSR_WRITE_4(sc, BGE_MAC_MODE, val);
1530
1531         /* Set misc. local control, enable interrupts on attentions */
1532         CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_ONATTN);
1533
1534 #ifdef notdef
1535         /* Assert GPIO pins for PHY reset */
1536         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0|
1537             BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUT2);
1538         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0|
1539             BGE_MLC_MISCIO_OUTEN1|BGE_MLC_MISCIO_OUTEN2);
1540 #endif
1541
1542         /* Turn on write DMA state machine */
1543         val = BGE_WDMAMODE_ENABLE|BGE_WDMAMODE_ALL_ATTNS;
1544         /* Enable host coalescing bug fix. */
1545         val |= BGE_WDMAMODE_STATUS_TAG_FIX;
1546         if (sc->bnx_asicrev == BGE_ASICREV_BCM5785) {
1547                 /* Request larger DMA burst size to get better performance. */
1548                 val |= BGE_WDMAMODE_BURST_ALL_DATA;
1549         }
1550         CSR_WRITE_4(sc, BGE_WDMA_MODE, val);
1551         DELAY(40);
1552
1553         if (BNX_IS_57765_PLUS(sc)) {
1554                 uint32_t dmactl;
1555
1556                 dmactl = CSR_READ_4(sc, BGE_RDMA_RSRVCTRL);
1557                 /*
1558                  * Adjust tx margin to prevent TX data corruption and
1559                  * fix internal FIFO overflow.
1560                  */
1561                 if (sc->bnx_asicrev == BGE_ASICREV_BCM5719 ||
1562                     sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1563                         dmactl &= ~(BGE_RDMA_RSRVCTRL_FIFO_LWM_MASK |
1564                             BGE_RDMA_RSRVCTRL_FIFO_HWM_MASK |
1565                             BGE_RDMA_RSRVCTRL_TXMRGN_MASK);
1566                         dmactl |= BGE_RDMA_RSRVCTRL_FIFO_LWM_1_5K |
1567                             BGE_RDMA_RSRVCTRL_FIFO_HWM_1_5K |
1568                             BGE_RDMA_RSRVCTRL_TXMRGN_320B;
1569                 }
1570                 /*
1571                  * Enable fix for read DMA FIFO overruns.
1572                  * The fix is to limit the number of RX BDs
1573                  * the hardware would fetch at a fime.
1574                  */
1575                 CSR_WRITE_4(sc, BGE_RDMA_RSRVCTRL,
1576                     dmactl | BGE_RDMA_RSRVCTRL_FIFO_OFLW_FIX);
1577         }
1578
1579         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719) {
1580                 CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL,
1581                     CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL) |
1582                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_4K |
1583                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K);
1584         } else if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1585                 /*
1586                  * Allow 4KB burst length reads for non-LSO frames.
1587                  * Enable 512B burst length reads for buffer descriptors.
1588                  */
1589                 CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL,
1590                     CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL) |
1591                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_512 |
1592                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K);
1593         }
1594
1595         /* Turn on read DMA state machine */
1596         val = BGE_RDMAMODE_ENABLE | BGE_RDMAMODE_ALL_ATTNS;
1597         if (sc->bnx_asicrev == BGE_ASICREV_BCM5717)
1598                 val |= BGE_RDMAMODE_MULT_DMA_RD_DIS;
1599         if (sc->bnx_asicrev == BGE_ASICREV_BCM5784 ||
1600             sc->bnx_asicrev == BGE_ASICREV_BCM5785 ||
1601             sc->bnx_asicrev == BGE_ASICREV_BCM57780) {
1602                 val |= BGE_RDMAMODE_BD_SBD_CRPT_ATTN |
1603                     BGE_RDMAMODE_MBUF_RBD_CRPT_ATTN |
1604                     BGE_RDMAMODE_MBUF_SBD_CRPT_ATTN;
1605         }
1606         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1607                 val |= CSR_READ_4(sc, BGE_RDMA_MODE) &
1608                     BGE_RDMAMODE_H2BNC_VLAN_DET;
1609                 /*
1610                  * Allow multiple outstanding read requests from
1611                  * non-LSO read DMA engine.
1612                  */
1613                 val &= ~BGE_RDMAMODE_MULT_DMA_RD_DIS;
1614         }
1615         val |= BGE_RDMAMODE_FIFO_LONG_BURST;
1616         CSR_WRITE_4(sc, BGE_RDMA_MODE, val);
1617         DELAY(40);
1618
1619         /* Turn on RX data completion state machine */
1620         CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
1621
1622         /* Turn on RX BD initiator state machine */
1623         CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
1624
1625         /* Turn on RX data and RX BD initiator state machine */
1626         CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE);
1627
1628         /* Turn on send BD completion state machine */
1629         CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
1630
1631         /* Turn on send data completion state machine */
1632         val = BGE_SDCMODE_ENABLE;
1633         if (sc->bnx_asicrev == BGE_ASICREV_BCM5761)
1634                 val |= BGE_SDCMODE_CDELAY;
1635         CSR_WRITE_4(sc, BGE_SDC_MODE, val);
1636
1637         /* Turn on send data initiator state machine */
1638         CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
1639
1640         /* Turn on send BD initiator state machine */
1641         CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
1642
1643         /* Turn on send BD selector state machine */
1644         CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
1645
1646         CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF);
1647         CSR_WRITE_4(sc, BGE_SDI_STATS_CTL,
1648             BGE_SDISTATSCTL_ENABLE|BGE_SDISTATSCTL_FASTER);
1649
1650         /* ack/clear link change events */
1651         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1652             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1653             BGE_MACSTAT_LINK_CHANGED);
1654         CSR_WRITE_4(sc, BGE_MI_STS, 0);
1655
1656         /*
1657          * Enable attention when the link has changed state for
1658          * devices that use auto polling.
1659          */
1660         if (sc->bnx_flags & BNX_FLAG_TBI) {
1661                 CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK);
1662         } else {
1663                 if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
1664                         CSR_WRITE_4(sc, BGE_MI_MODE, sc->bnx_mi_mode);
1665                         DELAY(80);
1666                 }
1667         }
1668
1669         /*
1670          * Clear any pending link state attention.
1671          * Otherwise some link state change events may be lost until attention
1672          * is cleared by bnx_intr() -> bnx_softc.bnx_link_upd() sequence.
1673          * It's not necessary on newer BCM chips - perhaps enabling link
1674          * state change attentions implies clearing pending attention.
1675          */
1676         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1677             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1678             BGE_MACSTAT_LINK_CHANGED);
1679
1680         /* Enable link state change attentions. */
1681         BNX_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED);
1682
1683         return(0);
1684 }
1685
1686 /*
1687  * Probe for a Broadcom chip. Check the PCI vendor and device IDs
1688  * against our list and return its name if we find a match. Note
1689  * that since the Broadcom controller contains VPD support, we
1690  * can get the device name string from the controller itself instead
1691  * of the compiled-in string. This is a little slow, but it guarantees
1692  * we'll always announce the right product name.
1693  */
1694 static int
1695 bnx_probe(device_t dev)
1696 {
1697         const struct bnx_type *t;
1698         uint16_t product, vendor;
1699
1700         if (!pci_is_pcie(dev))
1701                 return ENXIO;
1702
1703         product = pci_get_device(dev);
1704         vendor = pci_get_vendor(dev);
1705
1706         for (t = bnx_devs; t->bnx_name != NULL; t++) {
1707                 if (vendor == t->bnx_vid && product == t->bnx_did)
1708                         break;
1709         }
1710         if (t->bnx_name == NULL)
1711                 return ENXIO;
1712
1713         device_set_desc(dev, t->bnx_name);
1714         return 0;
1715 }
1716
1717 static int
1718 bnx_attach(device_t dev)
1719 {
1720         struct ifnet *ifp;
1721         struct bnx_softc *sc;
1722         uint32_t hwcfg = 0, misccfg;
1723         int error = 0, rid, capmask;
1724         uint8_t ether_addr[ETHER_ADDR_LEN];
1725         uint16_t product, vendor;
1726         driver_intr_t *intr_func;
1727         uintptr_t mii_priv = 0;
1728         u_int intr_flags;
1729
1730         sc = device_get_softc(dev);
1731         sc->bnx_dev = dev;
1732         callout_init(&sc->bnx_stat_timer);
1733         lwkt_serialize_init(&sc->bnx_jslot_serializer);
1734
1735         product = pci_get_device(dev);
1736         vendor = pci_get_vendor(dev);
1737
1738 #ifndef BURN_BRIDGES
1739         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
1740                 uint32_t irq, mem;
1741
1742                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
1743                 mem = pci_read_config(dev, BGE_PCI_BAR0, 4);
1744
1745                 device_printf(dev, "chip is in D%d power mode "
1746                     "-- setting to D0\n", pci_get_powerstate(dev));
1747
1748                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
1749
1750                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
1751                 pci_write_config(dev, BGE_PCI_BAR0, mem, 4);
1752         }
1753 #endif  /* !BURN_BRIDGE */
1754
1755         /*
1756          * Map control/status registers.
1757          */
1758         pci_enable_busmaster(dev);
1759
1760         rid = BGE_PCI_BAR0;
1761         sc->bnx_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1762             RF_ACTIVE);
1763
1764         if (sc->bnx_res == NULL) {
1765                 device_printf(dev, "couldn't map memory\n");
1766                 return ENXIO;
1767         }
1768
1769         sc->bnx_btag = rman_get_bustag(sc->bnx_res);
1770         sc->bnx_bhandle = rman_get_bushandle(sc->bnx_res);
1771
1772         /* Save various chip information */
1773         sc->bnx_chipid =
1774             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) >>
1775             BGE_PCIMISCCTL_ASICREV_SHIFT;
1776         if (BGE_ASICREV(sc->bnx_chipid) == BGE_ASICREV_USE_PRODID_REG) {
1777                 /* All chips having dedicated ASICREV register have CPMU */
1778                 sc->bnx_flags |= BNX_FLAG_CPMU;
1779
1780                 switch (product) {
1781                 case PCI_PRODUCT_BROADCOM_BCM5717:
1782                 case PCI_PRODUCT_BROADCOM_BCM5718:
1783                 case PCI_PRODUCT_BROADCOM_BCM5719:
1784                 case PCI_PRODUCT_BROADCOM_BCM5720_ALT:
1785                         sc->bnx_chipid = pci_read_config(dev,
1786                             BGE_PCI_GEN2_PRODID_ASICREV, 4);
1787                         break;
1788
1789                 case PCI_PRODUCT_BROADCOM_BCM57761:
1790                 case PCI_PRODUCT_BROADCOM_BCM57765:
1791                 case PCI_PRODUCT_BROADCOM_BCM57781:
1792                 case PCI_PRODUCT_BROADCOM_BCM57785:
1793                 case PCI_PRODUCT_BROADCOM_BCM57791:
1794                 case PCI_PRODUCT_BROADCOM_BCM57795:
1795                         sc->bnx_chipid = pci_read_config(dev,
1796                             BGE_PCI_GEN15_PRODID_ASICREV, 4);
1797                         break;
1798
1799                 default:
1800                         sc->bnx_chipid = pci_read_config(dev,
1801                             BGE_PCI_PRODID_ASICREV, 4);
1802                         break;
1803                 }
1804         }
1805         sc->bnx_asicrev = BGE_ASICREV(sc->bnx_chipid);
1806         sc->bnx_chiprev = BGE_CHIPREV(sc->bnx_chipid);
1807
1808         switch (sc->bnx_asicrev) {
1809         case BGE_ASICREV_BCM5717:
1810         case BGE_ASICREV_BCM5719:
1811         case BGE_ASICREV_BCM5720:
1812                 sc->bnx_flags |= BNX_FLAG_5717_PLUS | BNX_FLAG_57765_PLUS;
1813                 break;
1814
1815         case BGE_ASICREV_BCM57765:
1816                 sc->bnx_flags |= BNX_FLAG_57765_FAMILY | BNX_FLAG_57765_PLUS;
1817                 break;
1818         }
1819         sc->bnx_flags |= BNX_FLAG_SHORTDMA;
1820
1821         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906)
1822                 sc->bnx_flags |= BNX_FLAG_NO_EEPROM;
1823
1824         misccfg = CSR_READ_4(sc, BGE_MISC_CFG) & BGE_MISCCFG_BOARD_ID_MASK;
1825
1826         sc->bnx_pciecap = pci_get_pciecap_ptr(sc->bnx_dev);
1827         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719 ||
1828             sc->bnx_asicrev == BGE_ASICREV_BCM5720)
1829                 pcie_set_max_readrq(dev, PCIEM_DEVCTL_MAX_READRQ_2048);
1830         else
1831                 pcie_set_max_readrq(dev, PCIEM_DEVCTL_MAX_READRQ_4096);
1832         device_printf(dev, "CHIP ID 0x%08x; "
1833                       "ASIC REV 0x%02x; CHIP REV 0x%02x\n",
1834                       sc->bnx_chipid, sc->bnx_asicrev, sc->bnx_chiprev);
1835
1836         /*
1837          * Set various PHY quirk flags.
1838          */
1839
1840         capmask = MII_CAPMASK_DEFAULT;
1841         if ((sc->bnx_asicrev == BGE_ASICREV_BCM5703 &&
1842              (misccfg == 0x4000 || misccfg == 0x8000)) ||
1843             (sc->bnx_asicrev == BGE_ASICREV_BCM5705 &&
1844              vendor == PCI_VENDOR_BROADCOM &&
1845              (product == PCI_PRODUCT_BROADCOM_BCM5901 ||
1846               product == PCI_PRODUCT_BROADCOM_BCM5901A2 ||
1847               product == PCI_PRODUCT_BROADCOM_BCM5705F)) ||
1848             (vendor == PCI_VENDOR_BROADCOM &&
1849              (product == PCI_PRODUCT_BROADCOM_BCM5751F ||
1850               product == PCI_PRODUCT_BROADCOM_BCM5753F ||
1851               product == PCI_PRODUCT_BROADCOM_BCM5787F)) ||
1852             product == PCI_PRODUCT_BROADCOM_BCM57790 ||
1853             sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
1854                 /* 10/100 only */
1855                 capmask &= ~BMSR_EXTSTAT;
1856         }
1857
1858         mii_priv |= BRGPHY_FLAG_WIRESPEED;
1859
1860         /*
1861          * Allocate interrupt
1862          */
1863         sc->bnx_irq_type = pci_alloc_1intr(dev, bnx_msi_enable, &sc->bnx_irq_rid,
1864             &intr_flags);
1865
1866         sc->bnx_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->bnx_irq_rid,
1867             intr_flags);
1868         if (sc->bnx_irq == NULL) {
1869                 device_printf(dev, "couldn't map interrupt\n");
1870                 error = ENXIO;
1871                 goto fail;
1872         }
1873
1874         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI) {
1875                 sc->bnx_flags |= BNX_FLAG_ONESHOT_MSI;
1876                 bnx_enable_msi(sc);
1877         }
1878
1879         /* Initialize if_name earlier, so if_printf could be used */
1880         ifp = &sc->arpcom.ac_if;
1881         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1882
1883         /* Try to reset the chip. */
1884         bnx_reset(sc);
1885
1886         if (bnx_chipinit(sc)) {
1887                 device_printf(dev, "chip initialization failed\n");
1888                 error = ENXIO;
1889                 goto fail;
1890         }
1891
1892         /*
1893          * Get station address
1894          */
1895         error = bnx_get_eaddr(sc, ether_addr);
1896         if (error) {
1897                 device_printf(dev, "failed to read station address\n");
1898                 goto fail;
1899         }
1900
1901         if (BNX_IS_57765_PLUS(sc)) {
1902                 sc->bnx_return_ring_cnt = BGE_RETURN_RING_CNT;
1903         } else {
1904                 /* 5705/5750 limits RX return ring to 512 entries. */
1905                 sc->bnx_return_ring_cnt = BGE_RETURN_RING_CNT_5705;
1906         }
1907
1908         error = bnx_dma_alloc(sc);
1909         if (error)
1910                 goto fail;
1911
1912         /* Set default tuneable values. */
1913         sc->bnx_rx_coal_ticks = BNX_RX_COAL_TICKS_DEF;
1914         sc->bnx_tx_coal_ticks = BNX_TX_COAL_TICKS_DEF;
1915         sc->bnx_rx_coal_bds = BNX_RX_COAL_BDS_DEF;
1916         sc->bnx_tx_coal_bds = BNX_TX_COAL_BDS_DEF;
1917         sc->bnx_rx_coal_bds_int = BNX_RX_COAL_BDS_DEF;
1918         sc->bnx_tx_coal_bds_int = BNX_TX_COAL_BDS_DEF;
1919
1920         /* Set up ifnet structure */
1921         ifp->if_softc = sc;
1922         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1923         ifp->if_ioctl = bnx_ioctl;
1924         ifp->if_start = bnx_start;
1925 #ifdef DEVICE_POLLING
1926         ifp->if_poll = bnx_poll;
1927 #endif
1928         ifp->if_watchdog = bnx_watchdog;
1929         ifp->if_init = bnx_init;
1930         ifp->if_mtu = ETHERMTU;
1931         ifp->if_capabilities = IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
1932         ifq_set_maxlen(&ifp->if_snd, BGE_TX_RING_CNT - 1);
1933         ifq_set_ready(&ifp->if_snd);
1934
1935         ifp->if_capabilities |= IFCAP_HWCSUM;
1936         ifp->if_hwassist = BNX_CSUM_FEATURES;
1937         ifp->if_capenable = ifp->if_capabilities;
1938
1939         /*
1940          * Figure out what sort of media we have by checking the
1941          * hardware config word in the first 32k of NIC internal memory,
1942          * or fall back to examining the EEPROM if necessary.
1943          * Note: on some BCM5700 cards, this value appears to be unset.
1944          * If that's the case, we have to rely on identifying the NIC
1945          * by its PCI subsystem ID, as we do below for the SysKonnect
1946          * SK-9D41.
1947          */
1948         if (bnx_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER) {
1949                 hwcfg = bnx_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG);
1950         } else {
1951                 if (bnx_read_eeprom(sc, (caddr_t)&hwcfg, BGE_EE_HWCFG_OFFSET,
1952                                     sizeof(hwcfg))) {
1953                         device_printf(dev, "failed to read EEPROM\n");
1954                         error = ENXIO;
1955                         goto fail;
1956                 }
1957                 hwcfg = ntohl(hwcfg);
1958         }
1959
1960         /* The SysKonnect SK-9D41 is a 1000baseSX card. */
1961         if (pci_get_subvendor(dev) == PCI_PRODUCT_SCHNEIDERKOCH_SK_9D41 ||
1962             (hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER)
1963                 sc->bnx_flags |= BNX_FLAG_TBI;
1964
1965         /* Setup MI MODE */
1966         if (sc->bnx_flags & BNX_FLAG_CPMU)
1967                 sc->bnx_mi_mode = BGE_MIMODE_500KHZ_CONST;
1968         else
1969                 sc->bnx_mi_mode = BGE_MIMODE_BASE;
1970
1971         /* Setup link status update stuffs */
1972         if (sc->bnx_flags & BNX_FLAG_TBI) {
1973                 sc->bnx_link_upd = bnx_tbi_link_upd;
1974                 sc->bnx_link_chg = BGE_MACSTAT_LINK_CHANGED;
1975         } else if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
1976                 sc->bnx_link_upd = bnx_autopoll_link_upd;
1977                 sc->bnx_link_chg = BGE_MACSTAT_LINK_CHANGED;
1978         } else {
1979                 sc->bnx_link_upd = bnx_copper_link_upd;
1980                 sc->bnx_link_chg = BGE_MACSTAT_LINK_CHANGED;
1981         }
1982
1983         /* Set default PHY address */
1984         sc->bnx_phyno = 1;
1985
1986         /*
1987          * PHY address mapping for various devices.
1988          *
1989          *          | F0 Cu | F0 Sr | F1 Cu | F1 Sr |
1990          * ---------+-------+-------+-------+-------+
1991          * BCM57XX  |   1   |   X   |   X   |   X   |
1992          * BCM5704  |   1   |   X   |   1   |   X   |
1993          * BCM5717  |   1   |   8   |   2   |   9   |
1994          * BCM5719  |   1   |   8   |   2   |   9   |
1995          * BCM5720  |   1   |   8   |   2   |   9   |
1996          *
1997          * Other addresses may respond but they are not
1998          * IEEE compliant PHYs and should be ignored.
1999          */
2000         if (BNX_IS_5717_PLUS(sc)) {
2001                 int f;
2002
2003                 f = pci_get_function(dev);
2004                 if (sc->bnx_chipid == BGE_CHIPID_BCM5717_A0) {
2005                         if (CSR_READ_4(sc, BGE_SGDIG_STS) &
2006                             BGE_SGDIGSTS_IS_SERDES)
2007                                 sc->bnx_phyno = f + 8;
2008                         else
2009                                 sc->bnx_phyno = f + 1;
2010                 } else {
2011                         if (CSR_READ_4(sc, BGE_CPMU_PHY_STRAP) &
2012                             BGE_CPMU_PHY_STRAP_IS_SERDES)
2013                                 sc->bnx_phyno = f + 8;
2014                         else
2015                                 sc->bnx_phyno = f + 1;
2016                 }
2017         }
2018
2019         if (sc->bnx_flags & BNX_FLAG_TBI) {
2020                 ifmedia_init(&sc->bnx_ifmedia, IFM_IMASK,
2021                     bnx_ifmedia_upd, bnx_ifmedia_sts);
2022                 ifmedia_add(&sc->bnx_ifmedia, IFM_ETHER|IFM_1000_SX, 0, NULL);
2023                 ifmedia_add(&sc->bnx_ifmedia,
2024                     IFM_ETHER|IFM_1000_SX|IFM_FDX, 0, NULL);
2025                 ifmedia_add(&sc->bnx_ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
2026                 ifmedia_set(&sc->bnx_ifmedia, IFM_ETHER|IFM_AUTO);
2027                 sc->bnx_ifmedia.ifm_media = sc->bnx_ifmedia.ifm_cur->ifm_media;
2028         } else {
2029                 struct mii_probe_args mii_args;
2030
2031                 mii_probe_args_init(&mii_args, bnx_ifmedia_upd, bnx_ifmedia_sts);
2032                 mii_args.mii_probemask = 1 << sc->bnx_phyno;
2033                 mii_args.mii_capmask = capmask;
2034                 mii_args.mii_privtag = MII_PRIVTAG_BRGPHY;
2035                 mii_args.mii_priv = mii_priv;
2036
2037                 error = mii_probe(dev, &sc->bnx_miibus, &mii_args);
2038                 if (error) {
2039                         device_printf(dev, "MII without any PHY!\n");
2040                         goto fail;
2041                 }
2042         }
2043
2044         /*
2045          * Create sysctl nodes.
2046          */
2047         sysctl_ctx_init(&sc->bnx_sysctl_ctx);
2048         sc->bnx_sysctl_tree = SYSCTL_ADD_NODE(&sc->bnx_sysctl_ctx,
2049                                               SYSCTL_STATIC_CHILDREN(_hw),
2050                                               OID_AUTO,
2051                                               device_get_nameunit(dev),
2052                                               CTLFLAG_RD, 0, "");
2053         if (sc->bnx_sysctl_tree == NULL) {
2054                 device_printf(dev, "can't add sysctl node\n");
2055                 error = ENXIO;
2056                 goto fail;
2057         }
2058
2059         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2060                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2061                         OID_AUTO, "rx_coal_ticks",
2062                         CTLTYPE_INT | CTLFLAG_RW,
2063                         sc, 0, bnx_sysctl_rx_coal_ticks, "I",
2064                         "Receive coalescing ticks (usec).");
2065         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2066                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2067                         OID_AUTO, "tx_coal_ticks",
2068                         CTLTYPE_INT | CTLFLAG_RW,
2069                         sc, 0, bnx_sysctl_tx_coal_ticks, "I",
2070                         "Transmit coalescing ticks (usec).");
2071         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2072                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2073                         OID_AUTO, "rx_coal_bds",
2074                         CTLTYPE_INT | CTLFLAG_RW,
2075                         sc, 0, bnx_sysctl_rx_coal_bds, "I",
2076                         "Receive max coalesced BD count.");
2077         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2078                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2079                         OID_AUTO, "tx_coal_bds",
2080                         CTLTYPE_INT | CTLFLAG_RW,
2081                         sc, 0, bnx_sysctl_tx_coal_bds, "I",
2082                         "Transmit max coalesced BD count.");
2083         /*
2084          * A common design characteristic for many Broadcom
2085          * client controllers is that they only support a
2086          * single outstanding DMA read operation on the PCIe
2087          * bus. This means that it will take twice as long to
2088          * fetch a TX frame that is split into header and
2089          * payload buffers as it does to fetch a single,
2090          * contiguous TX frame (2 reads vs. 1 read). For these
2091          * controllers, coalescing buffers to reduce the number
2092          * of memory reads is effective way to get maximum
2093          * performance(about 940Mbps).  Without collapsing TX
2094          * buffers the maximum TCP bulk transfer performance
2095          * is about 850Mbps. However forcing coalescing mbufs
2096          * consumes a lot of CPU cycles, so leave it off by
2097          * default.
2098          */
2099         SYSCTL_ADD_INT(&sc->bnx_sysctl_ctx,
2100             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2101             "force_defrag", CTLFLAG_RW, &sc->bnx_force_defrag, 0,
2102             "Force defragment on TX path");
2103
2104         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2105             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2106             "rx_coal_bds_int", CTLTYPE_INT | CTLFLAG_RW,
2107             sc, 0, bnx_sysctl_rx_coal_bds_int, "I",
2108             "Receive max coalesced BD count during interrupt.");
2109         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2110             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2111             "tx_coal_bds_int", CTLTYPE_INT | CTLFLAG_RW,
2112             sc, 0, bnx_sysctl_tx_coal_bds_int, "I",
2113             "Transmit max coalesced BD count during interrupt.");
2114
2115         /*
2116          * Call MI attach routine.
2117          */
2118         ether_ifattach(ifp, ether_addr, NULL);
2119
2120         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI) {
2121                 if (sc->bnx_flags & BNX_FLAG_ONESHOT_MSI) {
2122                         intr_func = bnx_msi_oneshot;
2123                         if (bootverbose)
2124                                 device_printf(dev, "oneshot MSI\n");
2125                 } else {
2126                         intr_func = bnx_msi;
2127                 }
2128         } else {
2129                 intr_func = bnx_intr_legacy;
2130         }
2131         error = bus_setup_intr(dev, sc->bnx_irq, INTR_MPSAFE, intr_func, sc,
2132             &sc->bnx_intrhand, ifp->if_serializer);
2133         if (error) {
2134                 ether_ifdetach(ifp);
2135                 device_printf(dev, "couldn't set up irq\n");
2136                 goto fail;
2137         }
2138
2139         ifp->if_cpuid = rman_get_cpuid(sc->bnx_irq);
2140         KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
2141
2142         return(0);
2143 fail:
2144         bnx_detach(dev);
2145         return(error);
2146 }
2147
2148 static int
2149 bnx_detach(device_t dev)
2150 {
2151         struct bnx_softc *sc = device_get_softc(dev);
2152
2153         if (device_is_attached(dev)) {
2154                 struct ifnet *ifp = &sc->arpcom.ac_if;
2155
2156                 lwkt_serialize_enter(ifp->if_serializer);
2157                 bnx_stop(sc);
2158                 bnx_reset(sc);
2159                 bus_teardown_intr(dev, sc->bnx_irq, sc->bnx_intrhand);
2160                 lwkt_serialize_exit(ifp->if_serializer);
2161
2162                 ether_ifdetach(ifp);
2163         }
2164
2165         if (sc->bnx_flags & BNX_FLAG_TBI)
2166                 ifmedia_removeall(&sc->bnx_ifmedia);
2167         if (sc->bnx_miibus)
2168                 device_delete_child(dev, sc->bnx_miibus);
2169         bus_generic_detach(dev);
2170
2171         if (sc->bnx_irq != NULL) {
2172                 bus_release_resource(dev, SYS_RES_IRQ, sc->bnx_irq_rid,
2173                     sc->bnx_irq);
2174         }
2175         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI)
2176                 pci_release_msi(dev);
2177
2178         if (sc->bnx_res != NULL) {
2179                 bus_release_resource(dev, SYS_RES_MEMORY,
2180                     BGE_PCI_BAR0, sc->bnx_res);
2181         }
2182
2183         if (sc->bnx_sysctl_tree != NULL)
2184                 sysctl_ctx_free(&sc->bnx_sysctl_ctx);
2185
2186         bnx_dma_free(sc);
2187
2188         return 0;
2189 }
2190
2191 static void
2192 bnx_reset(struct bnx_softc *sc)
2193 {
2194         device_t dev;
2195         uint32_t cachesize, command, pcistate, reset;
2196         void (*write_op)(struct bnx_softc *, uint32_t, uint32_t);
2197         int i, val = 0;
2198         uint16_t devctl;
2199
2200         dev = sc->bnx_dev;
2201
2202         if (sc->bnx_asicrev != BGE_ASICREV_BCM5906)
2203                 write_op = bnx_writemem_direct;
2204         else
2205                 write_op = bnx_writereg_ind;
2206
2207         /* Save some important PCI state. */
2208         cachesize = pci_read_config(dev, BGE_PCI_CACHESZ, 4);
2209         command = pci_read_config(dev, BGE_PCI_CMD, 4);
2210         pcistate = pci_read_config(dev, BGE_PCI_PCISTATE, 4);
2211
2212         pci_write_config(dev, BGE_PCI_MISC_CTL,
2213             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2214             BGE_HIF_SWAP_OPTIONS|BGE_PCIMISCCTL_PCISTATE_RW|
2215             BGE_PCIMISCCTL_TAGGED_STATUS, 4);
2216
2217         /* Disable fastboot on controllers that support it. */
2218         if (bootverbose)
2219                 if_printf(&sc->arpcom.ac_if, "Disabling fastboot\n");
2220         CSR_WRITE_4(sc, BGE_FASTBOOT_PC, 0x0);
2221
2222         /*
2223          * Write the magic number to SRAM at offset 0xB50.
2224          * When firmware finishes its initialization it will
2225          * write ~BGE_MAGIC_NUMBER to the same location.
2226          */
2227         bnx_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER);
2228
2229         reset = BGE_MISCCFG_RESET_CORE_CLOCKS|(65<<1);
2230
2231         /* XXX: Broadcom Linux driver. */
2232         /* Force PCI-E 1.0a mode */
2233         if (!BNX_IS_57765_PLUS(sc) &&
2234             CSR_READ_4(sc, BGE_PCIE_PHY_TSTCTL) ==
2235             (BGE_PCIE_PHY_TSTCTL_PSCRAM |
2236              BGE_PCIE_PHY_TSTCTL_PCIE10)) {
2237                 CSR_WRITE_4(sc, BGE_PCIE_PHY_TSTCTL,
2238                     BGE_PCIE_PHY_TSTCTL_PSCRAM);
2239         }
2240         if (sc->bnx_chipid != BGE_CHIPID_BCM5750_A0) {
2241                 /* Prevent PCIE link training during global reset */
2242                 CSR_WRITE_4(sc, BGE_MISC_CFG, (1<<29));
2243                 reset |= (1<<29);
2244         }
2245
2246         /*
2247          * Set GPHY Power Down Override to leave GPHY
2248          * powered up in D0 uninitialized.
2249          */
2250         if ((sc->bnx_flags & BNX_FLAG_CPMU) == 0)
2251                 reset |= BGE_MISCCFG_GPHY_PD_OVERRIDE;
2252
2253         /* Issue global reset */
2254         write_op(sc, BGE_MISC_CFG, reset);
2255
2256         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
2257                 uint32_t status, ctrl;
2258
2259                 status = CSR_READ_4(sc, BGE_VCPU_STATUS);
2260                 CSR_WRITE_4(sc, BGE_VCPU_STATUS,
2261                     status | BGE_VCPU_STATUS_DRV_RESET);
2262                 ctrl = CSR_READ_4(sc, BGE_VCPU_EXT_CTRL);
2263                 CSR_WRITE_4(sc, BGE_VCPU_EXT_CTRL,
2264                     ctrl & ~BGE_VCPU_EXT_CTRL_HALT_CPU);
2265         }
2266
2267         DELAY(1000);
2268
2269         /* XXX: Broadcom Linux driver. */
2270         if (sc->bnx_chipid == BGE_CHIPID_BCM5750_A0) {
2271                 uint32_t v;
2272
2273                 DELAY(500000); /* wait for link training to complete */
2274                 v = pci_read_config(dev, 0xc4, 4);
2275                 pci_write_config(dev, 0xc4, v | (1<<15), 4);
2276         }
2277
2278         devctl = pci_read_config(dev, sc->bnx_pciecap + PCIER_DEVCTRL, 2);
2279
2280         /* Disable no snoop and disable relaxed ordering. */
2281         devctl &= ~(PCIEM_DEVCTL_RELAX_ORDER | PCIEM_DEVCTL_NOSNOOP);
2282
2283         /* Old PCI-E chips only support 128 bytes Max PayLoad Size. */
2284         if ((sc->bnx_flags & BNX_FLAG_CPMU) == 0) {
2285                 devctl &= ~PCIEM_DEVCTL_MAX_PAYLOAD_MASK;
2286                 devctl |= PCIEM_DEVCTL_MAX_PAYLOAD_128;
2287         }
2288
2289         pci_write_config(dev, sc->bnx_pciecap + PCIER_DEVCTRL,
2290             devctl, 2);
2291
2292         /* Clear error status. */
2293         pci_write_config(dev, sc->bnx_pciecap + PCIER_DEVSTS,
2294             PCIEM_DEVSTS_CORR_ERR |
2295             PCIEM_DEVSTS_NFATAL_ERR |
2296             PCIEM_DEVSTS_FATAL_ERR |
2297             PCIEM_DEVSTS_UNSUPP_REQ, 2);
2298
2299         /* Reset some of the PCI state that got zapped by reset */
2300         pci_write_config(dev, BGE_PCI_MISC_CTL,
2301             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2302             BGE_HIF_SWAP_OPTIONS|BGE_PCIMISCCTL_PCISTATE_RW|
2303             BGE_PCIMISCCTL_TAGGED_STATUS, 4);
2304         pci_write_config(dev, BGE_PCI_CACHESZ, cachesize, 4);
2305         pci_write_config(dev, BGE_PCI_CMD, command, 4);
2306         write_op(sc, BGE_MISC_CFG, (65 << 1));
2307
2308         /* Enable memory arbiter */
2309         CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
2310
2311         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
2312                 for (i = 0; i < BNX_TIMEOUT; i++) {
2313                         val = CSR_READ_4(sc, BGE_VCPU_STATUS);
2314                         if (val & BGE_VCPU_STATUS_INIT_DONE)
2315                                 break;
2316                         DELAY(100);
2317                 }
2318                 if (i == BNX_TIMEOUT) {
2319                         if_printf(&sc->arpcom.ac_if, "reset timed out\n");
2320                         return;
2321                 }
2322         } else {
2323                 /*
2324                  * Poll until we see the 1's complement of the magic number.
2325                  * This indicates that the firmware initialization
2326                  * is complete.
2327                  */
2328                 for (i = 0; i < BNX_FIRMWARE_TIMEOUT; i++) {
2329                         val = bnx_readmem_ind(sc, BGE_SOFTWARE_GENCOMM);
2330                         if (val == ~BGE_MAGIC_NUMBER)
2331                                 break;
2332                         DELAY(10);
2333                 }
2334                 if (i == BNX_FIRMWARE_TIMEOUT) {
2335                         if_printf(&sc->arpcom.ac_if, "firmware handshake "
2336                                   "timed out, found 0x%08x\n", val);
2337                 }
2338
2339                 /* BCM57765 A0 needs additional time before accessing. */
2340                 if (sc->bnx_chipid == BGE_CHIPID_BCM57765_A0)
2341                         DELAY(10 * 1000);
2342         }
2343
2344         /*
2345          * XXX Wait for the value of the PCISTATE register to
2346          * return to its original pre-reset state. This is a
2347          * fairly good indicator of reset completion. If we don't
2348          * wait for the reset to fully complete, trying to read
2349          * from the device's non-PCI registers may yield garbage
2350          * results.
2351          */
2352         for (i = 0; i < BNX_TIMEOUT; i++) {
2353                 if (pci_read_config(dev, BGE_PCI_PCISTATE, 4) == pcistate)
2354                         break;
2355                 DELAY(10);
2356         }
2357
2358         /* Fix up byte swapping */
2359         CSR_WRITE_4(sc, BGE_MODE_CTL, bnx_dma_swap_options(sc));
2360
2361         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
2362
2363         /*
2364          * The 5704 in TBI mode apparently needs some special
2365          * adjustment to insure the SERDES drive level is set
2366          * to 1.2V.
2367          */
2368         if (sc->bnx_asicrev == BGE_ASICREV_BCM5704 &&
2369             (sc->bnx_flags & BNX_FLAG_TBI)) {
2370                 uint32_t serdescfg;
2371
2372                 serdescfg = CSR_READ_4(sc, BGE_SERDES_CFG);
2373                 serdescfg = (serdescfg & ~0xFFF) | 0x880;
2374                 CSR_WRITE_4(sc, BGE_SERDES_CFG, serdescfg);
2375         }
2376
2377         /* XXX: Broadcom Linux driver. */
2378         if (!BNX_IS_57765_PLUS(sc)) {
2379                 uint32_t v;
2380
2381                 /* Enable Data FIFO protection. */
2382                 v = CSR_READ_4(sc, BGE_PCIE_TLDLPL_PORT);
2383                 CSR_WRITE_4(sc, BGE_PCIE_TLDLPL_PORT, v | (1 << 25));
2384         }
2385
2386         DELAY(10000);
2387
2388         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
2389                 BNX_CLRBIT(sc, BGE_CPMU_CLCK_ORIDE,
2390                     CPMU_CLCK_ORIDE_MAC_ORIDE_EN);
2391         }
2392 }
2393
2394 /*
2395  * Frame reception handling. This is called if there's a frame
2396  * on the receive return list.
2397  *
2398  * Note: we have to be able to handle two possibilities here:
2399  * 1) the frame is from the jumbo recieve ring
2400  * 2) the frame is from the standard receive ring
2401  */
2402
2403 static void
2404 bnx_rxeof(struct bnx_softc *sc, uint16_t rx_prod)
2405 {
2406         struct ifnet *ifp;
2407         int stdcnt = 0, jumbocnt = 0;
2408
2409         ifp = &sc->arpcom.ac_if;
2410
2411         while (sc->bnx_rx_saved_considx != rx_prod) {
2412                 struct bge_rx_bd        *cur_rx;
2413                 uint32_t                rxidx;
2414                 struct mbuf             *m = NULL;
2415                 uint16_t                vlan_tag = 0;
2416                 int                     have_tag = 0;
2417
2418                 cur_rx =
2419             &sc->bnx_ldata.bnx_rx_return_ring[sc->bnx_rx_saved_considx];
2420
2421                 rxidx = cur_rx->bge_idx;
2422                 BNX_INC(sc->bnx_rx_saved_considx, sc->bnx_return_ring_cnt);
2423
2424                 if (cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) {
2425                         have_tag = 1;
2426                         vlan_tag = cur_rx->bge_vlan_tag;
2427                 }
2428
2429                 if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) {
2430                         BNX_INC(sc->bnx_jumbo, BGE_JUMBO_RX_RING_CNT);
2431                         jumbocnt++;
2432
2433                         if (rxidx != sc->bnx_jumbo) {
2434                                 ifp->if_ierrors++;
2435                                 if_printf(ifp, "sw jumbo index(%d) "
2436                                     "and hw jumbo index(%d) mismatch, drop!\n",
2437                                     sc->bnx_jumbo, rxidx);
2438                                 bnx_setup_rxdesc_jumbo(sc, rxidx);
2439                                 continue;
2440                         }
2441
2442                         m = sc->bnx_cdata.bnx_rx_jumbo_chain[rxidx].bnx_mbuf;
2443                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2444                                 ifp->if_ierrors++;
2445                                 bnx_setup_rxdesc_jumbo(sc, sc->bnx_jumbo);
2446                                 continue;
2447                         }
2448                         if (bnx_newbuf_jumbo(sc, sc->bnx_jumbo, 0)) {
2449                                 ifp->if_ierrors++;
2450                                 bnx_setup_rxdesc_jumbo(sc, sc->bnx_jumbo);
2451                                 continue;
2452                         }
2453                 } else {
2454                         BNX_INC(sc->bnx_std, BGE_STD_RX_RING_CNT);
2455                         stdcnt++;
2456
2457                         if (rxidx != sc->bnx_std) {
2458                                 ifp->if_ierrors++;
2459                                 if_printf(ifp, "sw std index(%d) "
2460                                     "and hw std index(%d) mismatch, drop!\n",
2461                                     sc->bnx_std, rxidx);
2462                                 bnx_setup_rxdesc_std(sc, rxidx);
2463                                 continue;
2464                         }
2465
2466                         m = sc->bnx_cdata.bnx_rx_std_chain[rxidx].bnx_mbuf;
2467                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2468                                 ifp->if_ierrors++;
2469                                 bnx_setup_rxdesc_std(sc, sc->bnx_std);
2470                                 continue;
2471                         }
2472                         if (bnx_newbuf_std(sc, sc->bnx_std, 0)) {
2473                                 ifp->if_ierrors++;
2474                                 bnx_setup_rxdesc_std(sc, sc->bnx_std);
2475                                 continue;
2476                         }
2477                 }
2478
2479                 ifp->if_ipackets++;
2480                 m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN;
2481                 m->m_pkthdr.rcvif = ifp;
2482
2483                 if ((ifp->if_capenable & IFCAP_RXCSUM) &&
2484                     (cur_rx->bge_flags & BGE_RXBDFLAG_IPV6) == 0) {
2485                         if (cur_rx->bge_flags & BGE_RXBDFLAG_IP_CSUM) {
2486                                 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
2487                                 if ((cur_rx->bge_error_flag &
2488                                     BGE_RXERRFLAG_IP_CSUM_NOK) == 0)
2489                                         m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
2490                         }
2491                         if (cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM) {
2492                                 m->m_pkthdr.csum_data =
2493                                     cur_rx->bge_tcp_udp_csum;
2494                                 m->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
2495                                     CSUM_PSEUDO_HDR;
2496                         }
2497                 }
2498
2499                 /*
2500                  * If we received a packet with a vlan tag, pass it
2501                  * to vlan_input() instead of ether_input().
2502                  */
2503                 if (have_tag) {
2504                         m->m_flags |= M_VLANTAG;
2505                         m->m_pkthdr.ether_vlantag = vlan_tag;
2506                         have_tag = vlan_tag = 0;
2507                 }
2508                 ifp->if_input(ifp, m);
2509         }
2510
2511         bnx_writembx(sc, BGE_MBX_RX_CONS0_LO, sc->bnx_rx_saved_considx);
2512         if (stdcnt)
2513                 bnx_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bnx_std);
2514         if (jumbocnt)
2515                 bnx_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bnx_jumbo);
2516 }
2517
2518 static void
2519 bnx_txeof(struct bnx_softc *sc, uint16_t tx_cons)
2520 {
2521         struct bge_tx_bd *cur_tx = NULL;
2522         struct ifnet *ifp;
2523
2524         ifp = &sc->arpcom.ac_if;
2525
2526         /*
2527          * Go through our tx ring and free mbufs for those
2528          * frames that have been sent.
2529          */
2530         while (sc->bnx_tx_saved_considx != tx_cons) {
2531                 uint32_t idx = 0;
2532
2533                 idx = sc->bnx_tx_saved_considx;
2534                 cur_tx = &sc->bnx_ldata.bnx_tx_ring[idx];
2535                 if (cur_tx->bge_flags & BGE_TXBDFLAG_END)
2536                         ifp->if_opackets++;
2537                 if (sc->bnx_cdata.bnx_tx_chain[idx] != NULL) {
2538                         bus_dmamap_unload(sc->bnx_cdata.bnx_tx_mtag,
2539                             sc->bnx_cdata.bnx_tx_dmamap[idx]);
2540                         m_freem(sc->bnx_cdata.bnx_tx_chain[idx]);
2541                         sc->bnx_cdata.bnx_tx_chain[idx] = NULL;
2542                 }
2543                 sc->bnx_txcnt--;
2544                 BNX_INC(sc->bnx_tx_saved_considx, BGE_TX_RING_CNT);
2545         }
2546
2547         if (cur_tx != NULL &&
2548             (BGE_TX_RING_CNT - sc->bnx_txcnt) >=
2549             (BNX_NSEG_RSVD + BNX_NSEG_SPARE))
2550                 ifp->if_flags &= ~IFF_OACTIVE;
2551
2552         if (sc->bnx_txcnt == 0)
2553                 ifp->if_timer = 0;
2554
2555         if (!ifq_is_empty(&ifp->if_snd))
2556                 if_devstart(ifp);
2557 }
2558
2559 #ifdef DEVICE_POLLING
2560
2561 static void
2562 bnx_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
2563 {
2564         struct bnx_softc *sc = ifp->if_softc;
2565         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
2566         uint16_t rx_prod, tx_cons;
2567
2568         switch(cmd) {
2569         case POLL_REGISTER:
2570                 bnx_disable_intr(sc);
2571                 break;
2572         case POLL_DEREGISTER:
2573                 bnx_enable_intr(sc);
2574                 break;
2575         case POLL_AND_CHECK_STATUS:
2576                 /*
2577                  * Process link state changes.
2578                  */
2579                 bnx_link_poll(sc);
2580                 /* Fall through */
2581         case POLL_ONLY:
2582                 sc->bnx_status_tag = sblk->bge_status_tag;
2583                 /*
2584                  * Use a load fence to ensure that status_tag
2585                  * is saved  before rx_prod and tx_cons.
2586                  */
2587                 cpu_lfence();
2588
2589                 rx_prod = sblk->bge_idx[0].bge_rx_prod_idx;
2590                 tx_cons = sblk->bge_idx[0].bge_tx_cons_idx;
2591                 if (ifp->if_flags & IFF_RUNNING) {
2592                         rx_prod = sblk->bge_idx[0].bge_rx_prod_idx;
2593                         if (sc->bnx_rx_saved_considx != rx_prod)
2594                                 bnx_rxeof(sc, rx_prod);
2595
2596                         tx_cons = sblk->bge_idx[0].bge_tx_cons_idx;
2597                         if (sc->bnx_tx_saved_considx != tx_cons)
2598                                 bnx_txeof(sc, tx_cons);
2599                 }
2600                 break;
2601         }
2602 }
2603
2604 #endif
2605
2606 static void
2607 bnx_intr_legacy(void *xsc)
2608 {
2609         struct bnx_softc *sc = xsc;
2610         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
2611
2612         if (sc->bnx_status_tag == sblk->bge_status_tag) {
2613                 uint32_t val;
2614
2615                 val = pci_read_config(sc->bnx_dev, BGE_PCI_PCISTATE, 4);
2616                 if (val & BGE_PCISTAT_INTR_NOTACT)
2617                         return;
2618         }
2619
2620         /*
2621          * NOTE:
2622          * Interrupt will have to be disabled if tagged status
2623          * is used, else interrupt will always be asserted on
2624          * certain chips (at least on BCM5750 AX/BX).
2625          */
2626         bnx_writembx(sc, BGE_MBX_IRQ0_LO, 1);
2627
2628         bnx_intr(sc);
2629 }
2630
2631 static void
2632 bnx_msi(void *xsc)
2633 {
2634         struct bnx_softc *sc = xsc;
2635
2636         /* Disable interrupt first */
2637         bnx_writembx(sc, BGE_MBX_IRQ0_LO, 1);
2638         bnx_intr(sc);
2639 }
2640
2641 static void
2642 bnx_msi_oneshot(void *xsc)
2643 {
2644         bnx_intr(xsc);
2645 }
2646
2647 static void
2648 bnx_intr(struct bnx_softc *sc)
2649 {
2650         struct ifnet *ifp = &sc->arpcom.ac_if;
2651         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
2652         uint16_t rx_prod, tx_cons;
2653         uint32_t status;
2654
2655         sc->bnx_status_tag = sblk->bge_status_tag;
2656         /*
2657          * Use a load fence to ensure that status_tag is saved
2658          * before rx_prod, tx_cons and status.
2659          */
2660         cpu_lfence();
2661
2662         rx_prod = sblk->bge_idx[0].bge_rx_prod_idx;
2663         tx_cons = sblk->bge_idx[0].bge_tx_cons_idx;
2664         status = sblk->bge_status;
2665
2666         if ((status & BGE_STATFLAG_LINKSTATE_CHANGED) || sc->bnx_link_evt)
2667                 bnx_link_poll(sc);
2668
2669         if (ifp->if_flags & IFF_RUNNING) {
2670                 if (sc->bnx_rx_saved_considx != rx_prod)
2671                         bnx_rxeof(sc, rx_prod);
2672
2673                 if (sc->bnx_tx_saved_considx != tx_cons)
2674                         bnx_txeof(sc, tx_cons);
2675         }
2676
2677         bnx_writembx(sc, BGE_MBX_IRQ0_LO, sc->bnx_status_tag << 24);
2678
2679         if (sc->bnx_coal_chg)
2680                 bnx_coal_change(sc);
2681 }
2682
2683 static void
2684 bnx_tick(void *xsc)
2685 {
2686         struct bnx_softc *sc = xsc;
2687         struct ifnet *ifp = &sc->arpcom.ac_if;
2688
2689         lwkt_serialize_enter(ifp->if_serializer);
2690
2691         bnx_stats_update_regs(sc);
2692
2693         if (sc->bnx_flags & BNX_FLAG_TBI) {
2694                 /*
2695                  * Since in TBI mode auto-polling can't be used we should poll
2696                  * link status manually. Here we register pending link event
2697                  * and trigger interrupt.
2698                  */
2699                 sc->bnx_link_evt++;
2700                 BNX_SETBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_COAL_NOW);
2701         } else if (!sc->bnx_link) {
2702                 mii_tick(device_get_softc(sc->bnx_miibus));
2703         }
2704
2705         callout_reset(&sc->bnx_stat_timer, hz, bnx_tick, sc);
2706
2707         lwkt_serialize_exit(ifp->if_serializer);
2708 }
2709
2710 static void
2711 bnx_stats_update_regs(struct bnx_softc *sc)
2712 {
2713         struct ifnet *ifp = &sc->arpcom.ac_if;
2714         struct bge_mac_stats_regs stats;
2715         uint32_t *s;
2716         int i;
2717
2718         s = (uint32_t *)&stats;
2719         for (i = 0; i < sizeof(struct bge_mac_stats_regs); i += 4) {
2720                 *s = CSR_READ_4(sc, BGE_RX_STATS + i);
2721                 s++;
2722         }
2723
2724         ifp->if_collisions +=
2725            (stats.dot3StatsSingleCollisionFrames +
2726            stats.dot3StatsMultipleCollisionFrames +
2727            stats.dot3StatsExcessiveCollisions +
2728            stats.dot3StatsLateCollisions) -
2729            ifp->if_collisions;
2730 }
2731
2732 /*
2733  * Encapsulate an mbuf chain in the tx ring  by coupling the mbuf data
2734  * pointers to descriptors.
2735  */
2736 static int
2737 bnx_encap(struct bnx_softc *sc, struct mbuf **m_head0, uint32_t *txidx)
2738 {
2739         struct bge_tx_bd *d = NULL;
2740         uint16_t csum_flags = 0;
2741         bus_dma_segment_t segs[BNX_NSEG_NEW];
2742         bus_dmamap_t map;
2743         int error, maxsegs, nsegs, idx, i;
2744         struct mbuf *m_head = *m_head0, *m_new;
2745
2746         if (m_head->m_pkthdr.csum_flags) {
2747                 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
2748                         csum_flags |= BGE_TXBDFLAG_IP_CSUM;
2749                 if (m_head->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))
2750                         csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM;
2751                 if (m_head->m_flags & M_LASTFRAG)
2752                         csum_flags |= BGE_TXBDFLAG_IP_FRAG_END;
2753                 else if (m_head->m_flags & M_FRAG)
2754                         csum_flags |= BGE_TXBDFLAG_IP_FRAG;
2755         }
2756
2757         idx = *txidx;
2758         map = sc->bnx_cdata.bnx_tx_dmamap[idx];
2759
2760         maxsegs = (BGE_TX_RING_CNT - sc->bnx_txcnt) - BNX_NSEG_RSVD;
2761         KASSERT(maxsegs >= BNX_NSEG_SPARE,
2762                 ("not enough segments %d", maxsegs));
2763
2764         if (maxsegs > BNX_NSEG_NEW)
2765                 maxsegs = BNX_NSEG_NEW;
2766
2767         /*
2768          * Pad outbound frame to BGE_MIN_FRAMELEN for an unusual reason.
2769          * The bge hardware will pad out Tx runts to BGE_MIN_FRAMELEN,
2770          * but when such padded frames employ the bge IP/TCP checksum
2771          * offload, the hardware checksum assist gives incorrect results
2772          * (possibly from incorporating its own padding into the UDP/TCP
2773          * checksum; who knows).  If we pad such runts with zeros, the
2774          * onboard checksum comes out correct.
2775          */
2776         if ((csum_flags & BGE_TXBDFLAG_TCP_UDP_CSUM) &&
2777             m_head->m_pkthdr.len < BNX_MIN_FRAMELEN) {
2778                 error = m_devpad(m_head, BNX_MIN_FRAMELEN);
2779                 if (error)
2780                         goto back;
2781         }
2782
2783         if ((sc->bnx_flags & BNX_FLAG_SHORTDMA) && m_head->m_next != NULL) {
2784                 m_new = bnx_defrag_shortdma(m_head);
2785                 if (m_new == NULL) {
2786                         error = ENOBUFS;
2787                         goto back;
2788                 }
2789                 *m_head0 = m_head = m_new;
2790         }
2791         if (sc->bnx_force_defrag && m_head->m_next != NULL) {
2792                 /*
2793                  * Forcefully defragment mbuf chain to overcome hardware
2794                  * limitation which only support a single outstanding
2795                  * DMA read operation.  If it fails, keep moving on using
2796                  * the original mbuf chain.
2797                  */
2798                 m_new = m_defrag(m_head, MB_DONTWAIT);
2799                 if (m_new != NULL)
2800                         *m_head0 = m_head = m_new;
2801         }
2802
2803         error = bus_dmamap_load_mbuf_defrag(sc->bnx_cdata.bnx_tx_mtag, map,
2804                         m_head0, segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
2805         if (error)
2806                 goto back;
2807
2808         m_head = *m_head0;
2809         bus_dmamap_sync(sc->bnx_cdata.bnx_tx_mtag, map, BUS_DMASYNC_PREWRITE);
2810
2811         for (i = 0; ; i++) {
2812                 d = &sc->bnx_ldata.bnx_tx_ring[idx];
2813
2814                 d->bge_addr.bge_addr_lo = BGE_ADDR_LO(segs[i].ds_addr);
2815                 d->bge_addr.bge_addr_hi = BGE_ADDR_HI(segs[i].ds_addr);
2816                 d->bge_len = segs[i].ds_len;
2817                 d->bge_flags = csum_flags;
2818
2819                 if (i == nsegs - 1)
2820                         break;
2821                 BNX_INC(idx, BGE_TX_RING_CNT);
2822         }
2823         /* Mark the last segment as end of packet... */
2824         d->bge_flags |= BGE_TXBDFLAG_END;
2825
2826         /* Set vlan tag to the first segment of the packet. */
2827         d = &sc->bnx_ldata.bnx_tx_ring[*txidx];
2828         if (m_head->m_flags & M_VLANTAG) {
2829                 d->bge_flags |= BGE_TXBDFLAG_VLAN_TAG;
2830                 d->bge_vlan_tag = m_head->m_pkthdr.ether_vlantag;
2831         } else {
2832                 d->bge_vlan_tag = 0;
2833         }
2834
2835         /*
2836          * Insure that the map for this transmission is placed at
2837          * the array index of the last descriptor in this chain.
2838          */
2839         sc->bnx_cdata.bnx_tx_dmamap[*txidx] = sc->bnx_cdata.bnx_tx_dmamap[idx];
2840         sc->bnx_cdata.bnx_tx_dmamap[idx] = map;
2841         sc->bnx_cdata.bnx_tx_chain[idx] = m_head;
2842         sc->bnx_txcnt += nsegs;
2843
2844         BNX_INC(idx, BGE_TX_RING_CNT);
2845         *txidx = idx;
2846 back:
2847         if (error) {
2848                 m_freem(*m_head0);
2849                 *m_head0 = NULL;
2850         }
2851         return error;
2852 }
2853
2854 /*
2855  * Main transmit routine. To avoid having to do mbuf copies, we put pointers
2856  * to the mbuf data regions directly in the transmit descriptors.
2857  */
2858 static void
2859 bnx_start(struct ifnet *ifp)
2860 {
2861         struct bnx_softc *sc = ifp->if_softc;
2862         struct mbuf *m_head = NULL;
2863         uint32_t prodidx;
2864         int need_trans;
2865
2866         if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
2867                 return;
2868
2869         prodidx = sc->bnx_tx_prodidx;
2870
2871         need_trans = 0;
2872         while (sc->bnx_cdata.bnx_tx_chain[prodidx] == NULL) {
2873                 m_head = ifq_dequeue(&ifp->if_snd, NULL);
2874                 if (m_head == NULL)
2875                         break;
2876
2877                 /*
2878                  * XXX
2879                  * The code inside the if() block is never reached since we
2880                  * must mark CSUM_IP_FRAGS in our if_hwassist to start getting
2881                  * requests to checksum TCP/UDP in a fragmented packet.
2882                  *
2883                  * XXX
2884                  * safety overkill.  If this is a fragmented packet chain
2885                  * with delayed TCP/UDP checksums, then only encapsulate
2886                  * it if we have enough descriptors to handle the entire
2887                  * chain at once.
2888                  * (paranoia -- may not actually be needed)
2889                  */
2890                 if ((m_head->m_flags & M_FIRSTFRAG) &&
2891                     (m_head->m_pkthdr.csum_flags & CSUM_DELAY_DATA)) {
2892                         if ((BGE_TX_RING_CNT - sc->bnx_txcnt) <
2893                             m_head->m_pkthdr.csum_data + BNX_NSEG_RSVD) {
2894                                 ifp->if_flags |= IFF_OACTIVE;
2895                                 ifq_prepend(&ifp->if_snd, m_head);
2896                                 break;
2897                         }
2898                 }
2899
2900                 /*
2901                  * Sanity check: avoid coming within BGE_NSEG_RSVD
2902                  * descriptors of the end of the ring.  Also make
2903                  * sure there are BGE_NSEG_SPARE descriptors for
2904                  * jumbo buffers' defragmentation.
2905                  */
2906                 if ((BGE_TX_RING_CNT - sc->bnx_txcnt) <
2907                     (BNX_NSEG_RSVD + BNX_NSEG_SPARE)) {
2908                         ifp->if_flags |= IFF_OACTIVE;
2909                         ifq_prepend(&ifp->if_snd, m_head);
2910                         break;
2911                 }
2912
2913                 /*
2914                  * Pack the data into the transmit ring. If we
2915                  * don't have room, set the OACTIVE flag and wait
2916                  * for the NIC to drain the ring.
2917                  */
2918                 if (bnx_encap(sc, &m_head, &prodidx)) {
2919                         ifp->if_flags |= IFF_OACTIVE;
2920                         ifp->if_oerrors++;
2921                         break;
2922                 }
2923                 need_trans = 1;
2924
2925                 ETHER_BPF_MTAP(ifp, m_head);
2926         }
2927
2928         if (!need_trans)
2929                 return;
2930
2931         /* Transmit */
2932         bnx_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
2933
2934         sc->bnx_tx_prodidx = prodidx;
2935
2936         /*
2937          * Set a timeout in case the chip goes out to lunch.
2938          */
2939         ifp->if_timer = 5;
2940 }
2941
2942 static void
2943 bnx_init(void *xsc)
2944 {
2945         struct bnx_softc *sc = xsc;
2946         struct ifnet *ifp = &sc->arpcom.ac_if;
2947         uint16_t *m;
2948         uint32_t mode;
2949
2950         ASSERT_SERIALIZED(ifp->if_serializer);
2951
2952         /* Cancel pending I/O and flush buffers. */
2953         bnx_stop(sc);
2954         bnx_reset(sc);
2955         bnx_chipinit(sc);
2956
2957         /*
2958          * Init the various state machines, ring
2959          * control blocks and firmware.
2960          */
2961         if (bnx_blockinit(sc)) {
2962                 if_printf(ifp, "initialization failure\n");
2963                 bnx_stop(sc);
2964                 return;
2965         }
2966
2967         /* Specify MTU. */
2968         CSR_WRITE_4(sc, BGE_RX_MTU, ifp->if_mtu +
2969             ETHER_HDR_LEN + ETHER_CRC_LEN + EVL_ENCAPLEN);
2970
2971         /* Load our MAC address. */
2972         m = (uint16_t *)&sc->arpcom.ac_enaddr[0];
2973         CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0]));
2974         CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2]));
2975
2976         /* Enable or disable promiscuous mode as needed. */
2977         bnx_setpromisc(sc);
2978
2979         /* Program multicast filter. */
2980         bnx_setmulti(sc);
2981
2982         /* Init RX ring. */
2983         if (bnx_init_rx_ring_std(sc)) {
2984                 if_printf(ifp, "RX ring initialization failed\n");
2985                 bnx_stop(sc);
2986                 return;
2987         }
2988
2989         /* Init jumbo RX ring. */
2990         if (ifp->if_mtu > (ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN)) {
2991                 if (bnx_init_rx_ring_jumbo(sc)) {
2992                         if_printf(ifp, "Jumbo RX ring initialization failed\n");
2993                         bnx_stop(sc);
2994                         return;
2995                 }
2996         }
2997
2998         /* Init our RX return ring index */
2999         sc->bnx_rx_saved_considx = 0;
3000
3001         /* Init TX ring. */
3002         bnx_init_tx_ring(sc);
3003
3004         /* Enable TX MAC state machine lockup fix. */
3005         mode = CSR_READ_4(sc, BGE_TX_MODE);
3006         mode |= BGE_TXMODE_MBUF_LOCKUP_FIX;
3007         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
3008                 mode &= ~(BGE_TXMODE_JMB_FRM_LEN | BGE_TXMODE_CNT_DN_MODE);
3009                 mode |= CSR_READ_4(sc, BGE_TX_MODE) &
3010                     (BGE_TXMODE_JMB_FRM_LEN | BGE_TXMODE_CNT_DN_MODE);
3011         }
3012         /* Turn on transmitter */
3013         CSR_WRITE_4(sc, BGE_TX_MODE, mode | BGE_TXMODE_ENABLE);
3014
3015         /* Turn on receiver */
3016         BNX_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
3017
3018         /*
3019          * Set the number of good frames to receive after RX MBUF
3020          * Low Watermark has been reached.  After the RX MAC receives
3021          * this number of frames, it will drop subsequent incoming
3022          * frames until the MBUF High Watermark is reached.
3023          */
3024         if (sc->bnx_asicrev == BGE_ASICREV_BCM57765)
3025                 CSR_WRITE_4(sc, BGE_MAX_RX_FRAME_LOWAT, 1);
3026         else
3027                 CSR_WRITE_4(sc, BGE_MAX_RX_FRAME_LOWAT, 2);
3028
3029         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI) {
3030                 if (bootverbose) {
3031                         if_printf(ifp, "MSI_MODE: %#x\n",
3032                             CSR_READ_4(sc, BGE_MSI_MODE));
3033                 }
3034         }
3035
3036         /* Tell firmware we're alive. */
3037         BNX_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
3038
3039         /* Enable host interrupts if polling(4) is not enabled. */
3040         PCI_SETBIT(sc->bnx_dev, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA, 4);
3041 #ifdef DEVICE_POLLING
3042         if (ifp->if_flags & IFF_POLLING)
3043                 bnx_disable_intr(sc);
3044         else
3045 #endif
3046         bnx_enable_intr(sc);
3047
3048         bnx_ifmedia_upd(ifp);
3049
3050         ifp->if_flags |= IFF_RUNNING;
3051         ifp->if_flags &= ~IFF_OACTIVE;
3052
3053         callout_reset(&sc->bnx_stat_timer, hz, bnx_tick, sc);
3054 }
3055
3056 /*
3057  * Set media options.
3058  */
3059 static int
3060 bnx_ifmedia_upd(struct ifnet *ifp)
3061 {
3062         struct bnx_softc *sc = ifp->if_softc;
3063
3064         /* If this is a 1000baseX NIC, enable the TBI port. */
3065         if (sc->bnx_flags & BNX_FLAG_TBI) {
3066                 struct ifmedia *ifm = &sc->bnx_ifmedia;
3067
3068                 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
3069                         return(EINVAL);
3070
3071                 switch(IFM_SUBTYPE(ifm->ifm_media)) {
3072                 case IFM_AUTO:
3073                         break;
3074
3075                 case IFM_1000_SX:
3076                         if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) {
3077                                 BNX_CLRBIT(sc, BGE_MAC_MODE,
3078                                     BGE_MACMODE_HALF_DUPLEX);
3079                         } else {
3080                                 BNX_SETBIT(sc, BGE_MAC_MODE,
3081                                     BGE_MACMODE_HALF_DUPLEX);
3082                         }
3083                         break;
3084                 default:
3085                         return(EINVAL);
3086                 }
3087         } else {
3088                 struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3089
3090                 sc->bnx_link_evt++;
3091                 sc->bnx_link = 0;
3092                 if (mii->mii_instance) {
3093                         struct mii_softc *miisc;
3094
3095                         LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
3096                                 mii_phy_reset(miisc);
3097                 }
3098                 mii_mediachg(mii);
3099
3100                 /*
3101                  * Force an interrupt so that we will call bnx_link_upd
3102                  * if needed and clear any pending link state attention.
3103                  * Without this we are not getting any further interrupts
3104                  * for link state changes and thus will not UP the link and
3105                  * not be able to send in bnx_start.  The only way to get
3106                  * things working was to receive a packet and get an RX
3107                  * intr.
3108                  *
3109                  * bnx_tick should help for fiber cards and we might not
3110                  * need to do this here if BNX_FLAG_TBI is set but as
3111                  * we poll for fiber anyway it should not harm.
3112                  */
3113                 BNX_SETBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_COAL_NOW);
3114         }
3115         return(0);
3116 }
3117
3118 /*
3119  * Report current media status.
3120  */
3121 static void
3122 bnx_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
3123 {
3124         struct bnx_softc *sc = ifp->if_softc;
3125
3126         if (sc->bnx_flags & BNX_FLAG_TBI) {
3127                 ifmr->ifm_status = IFM_AVALID;
3128                 ifmr->ifm_active = IFM_ETHER;
3129                 if (CSR_READ_4(sc, BGE_MAC_STS) &
3130                     BGE_MACSTAT_TBI_PCS_SYNCHED) {
3131                         ifmr->ifm_status |= IFM_ACTIVE;
3132                 } else {
3133                         ifmr->ifm_active |= IFM_NONE;
3134                         return;
3135                 }
3136
3137                 ifmr->ifm_active |= IFM_1000_SX;
3138                 if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX)
3139                         ifmr->ifm_active |= IFM_HDX;
3140                 else
3141                         ifmr->ifm_active |= IFM_FDX;
3142         } else {
3143                 struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3144
3145                 mii_pollstat(mii);
3146                 ifmr->ifm_active = mii->mii_media_active;
3147                 ifmr->ifm_status = mii->mii_media_status;
3148         }
3149 }
3150
3151 static int
3152 bnx_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
3153 {
3154         struct bnx_softc *sc = ifp->if_softc;
3155         struct ifreq *ifr = (struct ifreq *)data;
3156         int mask, error = 0;
3157
3158         ASSERT_SERIALIZED(ifp->if_serializer);
3159
3160         switch (command) {
3161         case SIOCSIFMTU:
3162                 if ((!BNX_IS_JUMBO_CAPABLE(sc) && ifr->ifr_mtu > ETHERMTU) ||
3163                     (BNX_IS_JUMBO_CAPABLE(sc) &&
3164                      ifr->ifr_mtu > BNX_JUMBO_MTU)) {
3165                         error = EINVAL;
3166                 } else if (ifp->if_mtu != ifr->ifr_mtu) {
3167                         ifp->if_mtu = ifr->ifr_mtu;
3168                         if (ifp->if_flags & IFF_RUNNING)
3169                                 bnx_init(sc);
3170                 }
3171                 break;
3172         case SIOCSIFFLAGS:
3173                 if (ifp->if_flags & IFF_UP) {
3174                         if (ifp->if_flags & IFF_RUNNING) {
3175                                 mask = ifp->if_flags ^ sc->bnx_if_flags;
3176
3177                                 /*
3178                                  * If only the state of the PROMISC flag
3179                                  * changed, then just use the 'set promisc
3180                                  * mode' command instead of reinitializing
3181                                  * the entire NIC. Doing a full re-init
3182                                  * means reloading the firmware and waiting
3183                                  * for it to start up, which may take a
3184                                  * second or two.  Similarly for ALLMULTI.
3185                                  */
3186                                 if (mask & IFF_PROMISC)
3187                                         bnx_setpromisc(sc);
3188                                 if (mask & IFF_ALLMULTI)
3189                                         bnx_setmulti(sc);
3190                         } else {
3191                                 bnx_init(sc);
3192                         }
3193                 } else if (ifp->if_flags & IFF_RUNNING) {
3194                         bnx_stop(sc);
3195                 }
3196                 sc->bnx_if_flags = ifp->if_flags;
3197                 break;
3198         case SIOCADDMULTI:
3199         case SIOCDELMULTI:
3200                 if (ifp->if_flags & IFF_RUNNING)
3201                         bnx_setmulti(sc);
3202                 break;
3203         case SIOCSIFMEDIA:
3204         case SIOCGIFMEDIA:
3205                 if (sc->bnx_flags & BNX_FLAG_TBI) {
3206                         error = ifmedia_ioctl(ifp, ifr,
3207                             &sc->bnx_ifmedia, command);
3208                 } else {
3209                         struct mii_data *mii;
3210
3211                         mii = device_get_softc(sc->bnx_miibus);
3212                         error = ifmedia_ioctl(ifp, ifr,
3213                                               &mii->mii_media, command);
3214                 }
3215                 break;
3216         case SIOCSIFCAP:
3217                 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
3218                 if (mask & IFCAP_HWCSUM) {
3219                         ifp->if_capenable ^= (mask & IFCAP_HWCSUM);
3220                         if (IFCAP_HWCSUM & ifp->if_capenable)
3221                                 ifp->if_hwassist = BNX_CSUM_FEATURES;
3222                         else
3223                                 ifp->if_hwassist = 0;
3224                 }
3225                 break;
3226         default:
3227                 error = ether_ioctl(ifp, command, data);
3228                 break;
3229         }
3230         return error;
3231 }
3232
3233 static void
3234 bnx_watchdog(struct ifnet *ifp)
3235 {
3236         struct bnx_softc *sc = ifp->if_softc;
3237
3238         if_printf(ifp, "watchdog timeout -- resetting\n");
3239
3240         bnx_init(sc);
3241
3242         ifp->if_oerrors++;
3243
3244         if (!ifq_is_empty(&ifp->if_snd))
3245                 if_devstart(ifp);
3246 }
3247
3248 /*
3249  * Stop the adapter and free any mbufs allocated to the
3250  * RX and TX lists.
3251  */
3252 static void
3253 bnx_stop(struct bnx_softc *sc)
3254 {
3255         struct ifnet *ifp = &sc->arpcom.ac_if;
3256
3257         ASSERT_SERIALIZED(ifp->if_serializer);
3258
3259         callout_stop(&sc->bnx_stat_timer);
3260
3261         /*
3262          * Disable all of the receiver blocks
3263          */
3264         bnx_stop_block(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
3265         bnx_stop_block(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
3266         bnx_stop_block(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
3267         bnx_stop_block(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE);
3268         bnx_stop_block(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
3269         bnx_stop_block(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE);
3270
3271         /*
3272          * Disable all of the transmit blocks
3273          */
3274         bnx_stop_block(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
3275         bnx_stop_block(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
3276         bnx_stop_block(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
3277         bnx_stop_block(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE);
3278         bnx_stop_block(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
3279         bnx_stop_block(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
3280
3281         /*
3282          * Shut down all of the memory managers and related
3283          * state machines.
3284          */
3285         bnx_stop_block(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
3286         bnx_stop_block(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE);
3287         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
3288         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
3289
3290         /* Disable host interrupts. */
3291         bnx_disable_intr(sc);
3292
3293         /*
3294          * Tell firmware we're shutting down.
3295          */
3296         BNX_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
3297
3298         /* Free the RX lists. */
3299         bnx_free_rx_ring_std(sc);
3300
3301         /* Free jumbo RX list. */
3302         if (BNX_IS_JUMBO_CAPABLE(sc))
3303                 bnx_free_rx_ring_jumbo(sc);
3304
3305         /* Free TX buffers. */
3306         bnx_free_tx_ring(sc);
3307
3308         sc->bnx_status_tag = 0;
3309         sc->bnx_link = 0;
3310         sc->bnx_coal_chg = 0;
3311
3312         sc->bnx_tx_saved_considx = BNX_TXCONS_UNSET;
3313
3314         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3315         ifp->if_timer = 0;
3316 }
3317
3318 /*
3319  * Stop all chip I/O so that the kernel's probe routines don't
3320  * get confused by errant DMAs when rebooting.
3321  */
3322 static void
3323 bnx_shutdown(device_t dev)
3324 {
3325         struct bnx_softc *sc = device_get_softc(dev);
3326         struct ifnet *ifp = &sc->arpcom.ac_if;
3327
3328         lwkt_serialize_enter(ifp->if_serializer);
3329         bnx_stop(sc);
3330         bnx_reset(sc);
3331         lwkt_serialize_exit(ifp->if_serializer);
3332 }
3333
3334 static int
3335 bnx_suspend(device_t dev)
3336 {
3337         struct bnx_softc *sc = device_get_softc(dev);
3338         struct ifnet *ifp = &sc->arpcom.ac_if;
3339
3340         lwkt_serialize_enter(ifp->if_serializer);
3341         bnx_stop(sc);
3342         lwkt_serialize_exit(ifp->if_serializer);
3343
3344         return 0;
3345 }
3346
3347 static int
3348 bnx_resume(device_t dev)
3349 {
3350         struct bnx_softc *sc = device_get_softc(dev);
3351         struct ifnet *ifp = &sc->arpcom.ac_if;
3352
3353         lwkt_serialize_enter(ifp->if_serializer);
3354
3355         if (ifp->if_flags & IFF_UP) {
3356                 bnx_init(sc);
3357
3358                 if (!ifq_is_empty(&ifp->if_snd))
3359                         if_devstart(ifp);
3360         }
3361
3362         lwkt_serialize_exit(ifp->if_serializer);
3363
3364         return 0;
3365 }
3366
3367 static void
3368 bnx_setpromisc(struct bnx_softc *sc)
3369 {
3370         struct ifnet *ifp = &sc->arpcom.ac_if;
3371
3372         if (ifp->if_flags & IFF_PROMISC)
3373                 BNX_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
3374         else
3375                 BNX_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
3376 }
3377
3378 static void
3379 bnx_dma_free(struct bnx_softc *sc)
3380 {
3381         int i;
3382
3383         /* Destroy RX mbuf DMA stuffs. */
3384         if (sc->bnx_cdata.bnx_rx_mtag != NULL) {
3385                 for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
3386                         bus_dmamap_destroy(sc->bnx_cdata.bnx_rx_mtag,
3387                             sc->bnx_cdata.bnx_rx_std_dmamap[i]);
3388                 }
3389                 bus_dmamap_destroy(sc->bnx_cdata.bnx_rx_mtag,
3390                                    sc->bnx_cdata.bnx_rx_tmpmap);
3391                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_rx_mtag);
3392         }
3393
3394         /* Destroy TX mbuf DMA stuffs. */
3395         if (sc->bnx_cdata.bnx_tx_mtag != NULL) {
3396                 for (i = 0; i < BGE_TX_RING_CNT; i++) {
3397                         bus_dmamap_destroy(sc->bnx_cdata.bnx_tx_mtag,
3398                             sc->bnx_cdata.bnx_tx_dmamap[i]);
3399                 }
3400                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_tx_mtag);
3401         }
3402
3403         /* Destroy standard RX ring */
3404         bnx_dma_block_free(sc->bnx_cdata.bnx_rx_std_ring_tag,
3405                            sc->bnx_cdata.bnx_rx_std_ring_map,
3406                            sc->bnx_ldata.bnx_rx_std_ring);
3407
3408         if (BNX_IS_JUMBO_CAPABLE(sc))
3409                 bnx_free_jumbo_mem(sc);
3410
3411         /* Destroy RX return ring */
3412         bnx_dma_block_free(sc->bnx_cdata.bnx_rx_return_ring_tag,
3413                            sc->bnx_cdata.bnx_rx_return_ring_map,
3414                            sc->bnx_ldata.bnx_rx_return_ring);
3415
3416         /* Destroy TX ring */
3417         bnx_dma_block_free(sc->bnx_cdata.bnx_tx_ring_tag,
3418                            sc->bnx_cdata.bnx_tx_ring_map,
3419                            sc->bnx_ldata.bnx_tx_ring);
3420
3421         /* Destroy status block */
3422         bnx_dma_block_free(sc->bnx_cdata.bnx_status_tag,
3423                            sc->bnx_cdata.bnx_status_map,
3424                            sc->bnx_ldata.bnx_status_block);
3425
3426         /* Destroy the parent tag */
3427         if (sc->bnx_cdata.bnx_parent_tag != NULL)
3428                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_parent_tag);
3429 }
3430
3431 static int
3432 bnx_dma_alloc(struct bnx_softc *sc)
3433 {
3434         struct ifnet *ifp = &sc->arpcom.ac_if;
3435         int i, error;
3436
3437         /*
3438          * Allocate the parent bus DMA tag appropriate for PCI.
3439          *
3440          * All of the NetExtreme/NetLink controllers have 4GB boundary
3441          * DMA bug.
3442          * Whenever an address crosses a multiple of the 4GB boundary
3443          * (including 4GB, 8Gb, 12Gb, etc.) and makes the transition
3444          * from 0xX_FFFF_FFFF to 0x(X+1)_0000_0000 an internal DMA
3445          * state machine will lockup and cause the device to hang.
3446          */
3447         error = bus_dma_tag_create(NULL, 1, BGE_DMA_BOUNDARY_4G,
3448                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3449                                    NULL, NULL,
3450                                    BUS_SPACE_MAXSIZE_32BIT, 0,
3451                                    BUS_SPACE_MAXSIZE_32BIT,
3452                                    0, &sc->bnx_cdata.bnx_parent_tag);
3453         if (error) {
3454                 if_printf(ifp, "could not allocate parent dma tag\n");
3455                 return error;
3456         }
3457
3458         /*
3459          * Create DMA tag and maps for RX mbufs.
3460          */
3461         error = bus_dma_tag_create(sc->bnx_cdata.bnx_parent_tag, 1, 0,
3462                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3463                                    NULL, NULL, MCLBYTES, 1, MCLBYTES,
3464                                    BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK,
3465                                    &sc->bnx_cdata.bnx_rx_mtag);
3466         if (error) {
3467                 if_printf(ifp, "could not allocate RX mbuf dma tag\n");
3468                 return error;
3469         }
3470
3471         error = bus_dmamap_create(sc->bnx_cdata.bnx_rx_mtag,
3472                                   BUS_DMA_WAITOK, &sc->bnx_cdata.bnx_rx_tmpmap);
3473         if (error) {
3474                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_rx_mtag);
3475                 sc->bnx_cdata.bnx_rx_mtag = NULL;
3476                 return error;
3477         }
3478
3479         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
3480                 error = bus_dmamap_create(sc->bnx_cdata.bnx_rx_mtag,
3481                                           BUS_DMA_WAITOK,
3482                                           &sc->bnx_cdata.bnx_rx_std_dmamap[i]);
3483                 if (error) {
3484                         int j;
3485
3486                         for (j = 0; j < i; ++j) {
3487                                 bus_dmamap_destroy(sc->bnx_cdata.bnx_rx_mtag,
3488                                         sc->bnx_cdata.bnx_rx_std_dmamap[j]);
3489                         }
3490                         bus_dma_tag_destroy(sc->bnx_cdata.bnx_rx_mtag);
3491                         sc->bnx_cdata.bnx_rx_mtag = NULL;
3492
3493                         if_printf(ifp, "could not create DMA map for RX\n");
3494                         return error;
3495                 }
3496         }
3497
3498         /*
3499          * Create DMA tag and maps for TX mbufs.
3500          */
3501         error = bus_dma_tag_create(sc->bnx_cdata.bnx_parent_tag, 1, 0,
3502                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3503                                    NULL, NULL,
3504                                    BNX_JUMBO_FRAMELEN, BNX_NSEG_NEW, MCLBYTES,
3505                                    BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK |
3506                                    BUS_DMA_ONEBPAGE,
3507                                    &sc->bnx_cdata.bnx_tx_mtag);
3508         if (error) {
3509                 if_printf(ifp, "could not allocate TX mbuf dma tag\n");
3510                 return error;
3511         }
3512
3513         for (i = 0; i < BGE_TX_RING_CNT; i++) {
3514                 error = bus_dmamap_create(sc->bnx_cdata.bnx_tx_mtag,
3515                                           BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE,
3516                                           &sc->bnx_cdata.bnx_tx_dmamap[i]);
3517                 if (error) {
3518                         int j;
3519
3520                         for (j = 0; j < i; ++j) {
3521                                 bus_dmamap_destroy(sc->bnx_cdata.bnx_tx_mtag,
3522                                         sc->bnx_cdata.bnx_tx_dmamap[j]);
3523                         }
3524                         bus_dma_tag_destroy(sc->bnx_cdata.bnx_tx_mtag);
3525                         sc->bnx_cdata.bnx_tx_mtag = NULL;
3526
3527                         if_printf(ifp, "could not create DMA map for TX\n");
3528                         return error;
3529                 }
3530         }
3531
3532         /*
3533          * Create DMA stuffs for standard RX ring.
3534          */
3535         error = bnx_dma_block_alloc(sc, BGE_STD_RX_RING_SZ,
3536                                     &sc->bnx_cdata.bnx_rx_std_ring_tag,
3537                                     &sc->bnx_cdata.bnx_rx_std_ring_map,
3538                                     (void *)&sc->bnx_ldata.bnx_rx_std_ring,
3539                                     &sc->bnx_ldata.bnx_rx_std_ring_paddr);
3540         if (error) {
3541                 if_printf(ifp, "could not create std RX ring\n");
3542                 return error;
3543         }
3544
3545         /*
3546          * Create jumbo buffer pool.
3547          */
3548         if (BNX_IS_JUMBO_CAPABLE(sc)) {
3549                 error = bnx_alloc_jumbo_mem(sc);
3550                 if (error) {
3551                         if_printf(ifp, "could not create jumbo buffer pool\n");
3552                         return error;
3553                 }
3554         }
3555
3556         /*
3557          * Create DMA stuffs for RX return ring.
3558          */
3559         error = bnx_dma_block_alloc(sc,
3560             BGE_RX_RTN_RING_SZ(sc->bnx_return_ring_cnt),
3561             &sc->bnx_cdata.bnx_rx_return_ring_tag,
3562             &sc->bnx_cdata.bnx_rx_return_ring_map,
3563             (void *)&sc->bnx_ldata.bnx_rx_return_ring,
3564             &sc->bnx_ldata.bnx_rx_return_ring_paddr);
3565         if (error) {
3566                 if_printf(ifp, "could not create RX ret ring\n");
3567                 return error;
3568         }
3569
3570         /*
3571          * Create DMA stuffs for TX ring.
3572          */
3573         error = bnx_dma_block_alloc(sc, BGE_TX_RING_SZ,
3574                                     &sc->bnx_cdata.bnx_tx_ring_tag,
3575                                     &sc->bnx_cdata.bnx_tx_ring_map,
3576                                     (void *)&sc->bnx_ldata.bnx_tx_ring,
3577                                     &sc->bnx_ldata.bnx_tx_ring_paddr);
3578         if (error) {
3579                 if_printf(ifp, "could not create TX ring\n");
3580                 return error;
3581         }
3582
3583         /*
3584          * Create DMA stuffs for status block.
3585          */
3586         error = bnx_dma_block_alloc(sc, BGE_STATUS_BLK_SZ,
3587                                     &sc->bnx_cdata.bnx_status_tag,
3588                                     &sc->bnx_cdata.bnx_status_map,
3589                                     (void *)&sc->bnx_ldata.bnx_status_block,
3590                                     &sc->bnx_ldata.bnx_status_block_paddr);
3591         if (error) {
3592                 if_printf(ifp, "could not create status block\n");
3593                 return error;
3594         }
3595
3596         return 0;
3597 }
3598
3599 static int
3600 bnx_dma_block_alloc(struct bnx_softc *sc, bus_size_t size, bus_dma_tag_t *tag,
3601                     bus_dmamap_t *map, void **addr, bus_addr_t *paddr)
3602 {
3603         bus_dmamem_t dmem;
3604         int error;
3605
3606         error = bus_dmamem_coherent(sc->bnx_cdata.bnx_parent_tag, PAGE_SIZE, 0,
3607                                     BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3608                                     size, BUS_DMA_WAITOK | BUS_DMA_ZERO, &dmem);
3609         if (error)
3610                 return error;
3611
3612         *tag = dmem.dmem_tag;
3613         *map = dmem.dmem_map;
3614         *addr = dmem.dmem_addr;
3615         *paddr = dmem.dmem_busaddr;
3616
3617         return 0;
3618 }
3619
3620 static void
3621 bnx_dma_block_free(bus_dma_tag_t tag, bus_dmamap_t map, void *addr)
3622 {
3623         if (tag != NULL) {
3624                 bus_dmamap_unload(tag, map);
3625                 bus_dmamem_free(tag, addr, map);
3626                 bus_dma_tag_destroy(tag);
3627         }
3628 }
3629
3630 static void
3631 bnx_tbi_link_upd(struct bnx_softc *sc, uint32_t status)
3632 {
3633         struct ifnet *ifp = &sc->arpcom.ac_if;
3634
3635 #define PCS_ENCODE_ERR  (BGE_MACSTAT_PORT_DECODE_ERROR|BGE_MACSTAT_MI_COMPLETE)
3636
3637         /*
3638          * Sometimes PCS encoding errors are detected in
3639          * TBI mode (on fiber NICs), and for some reason
3640          * the chip will signal them as link changes.
3641          * If we get a link change event, but the 'PCS
3642          * encoding error' bit in the MAC status register
3643          * is set, don't bother doing a link check.
3644          * This avoids spurious "gigabit link up" messages
3645          * that sometimes appear on fiber NICs during
3646          * periods of heavy traffic.
3647          */
3648         if (status & BGE_MACSTAT_TBI_PCS_SYNCHED) {
3649                 if (!sc->bnx_link) {
3650                         sc->bnx_link++;
3651                         if (sc->bnx_asicrev == BGE_ASICREV_BCM5704) {
3652                                 BNX_CLRBIT(sc, BGE_MAC_MODE,
3653                                     BGE_MACMODE_TBI_SEND_CFGS);
3654                         }
3655                         CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF);
3656
3657                         if (bootverbose)
3658                                 if_printf(ifp, "link UP\n");
3659
3660                         ifp->if_link_state = LINK_STATE_UP;
3661                         if_link_state_change(ifp);
3662                 }
3663         } else if ((status & PCS_ENCODE_ERR) != PCS_ENCODE_ERR) {
3664                 if (sc->bnx_link) {
3665                         sc->bnx_link = 0;
3666
3667                         if (bootverbose)
3668                                 if_printf(ifp, "link DOWN\n");
3669
3670                         ifp->if_link_state = LINK_STATE_DOWN;
3671                         if_link_state_change(ifp);
3672                 }
3673         }
3674
3675 #undef PCS_ENCODE_ERR
3676
3677         /* Clear the attention. */
3678         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3679             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3680             BGE_MACSTAT_LINK_CHANGED);
3681 }
3682
3683 static void
3684 bnx_copper_link_upd(struct bnx_softc *sc, uint32_t status __unused)
3685 {
3686         struct ifnet *ifp = &sc->arpcom.ac_if;
3687         struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3688
3689         mii_pollstat(mii);
3690         bnx_miibus_statchg(sc->bnx_dev);
3691
3692         if (bootverbose) {
3693                 if (sc->bnx_link)
3694                         if_printf(ifp, "link UP\n");
3695                 else
3696                         if_printf(ifp, "link DOWN\n");
3697         }
3698
3699         /* Clear the attention. */
3700         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3701             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3702             BGE_MACSTAT_LINK_CHANGED);
3703 }
3704
3705 static void
3706 bnx_autopoll_link_upd(struct bnx_softc *sc, uint32_t status __unused)
3707 {
3708         struct ifnet *ifp = &sc->arpcom.ac_if;
3709         struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3710
3711         mii_pollstat(mii);
3712
3713         if (!sc->bnx_link &&
3714             (mii->mii_media_status & IFM_ACTIVE) &&
3715             IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
3716                 sc->bnx_link++;
3717                 if (bootverbose)
3718                         if_printf(ifp, "link UP\n");
3719         } else if (sc->bnx_link &&
3720             (!(mii->mii_media_status & IFM_ACTIVE) ||
3721             IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) {
3722                 sc->bnx_link = 0;
3723                 if (bootverbose)
3724                         if_printf(ifp, "link DOWN\n");
3725         }
3726
3727         /* Clear the attention. */
3728         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3729             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3730             BGE_MACSTAT_LINK_CHANGED);
3731 }
3732
3733 static int
3734 bnx_sysctl_rx_coal_ticks(SYSCTL_HANDLER_ARGS)
3735 {
3736         struct bnx_softc *sc = arg1;
3737
3738         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3739             &sc->bnx_rx_coal_ticks,
3740             BNX_RX_COAL_TICKS_MIN, BNX_RX_COAL_TICKS_MAX,
3741             BNX_RX_COAL_TICKS_CHG);
3742 }
3743
3744 static int
3745 bnx_sysctl_tx_coal_ticks(SYSCTL_HANDLER_ARGS)
3746 {
3747         struct bnx_softc *sc = arg1;
3748
3749         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3750             &sc->bnx_tx_coal_ticks,
3751             BNX_TX_COAL_TICKS_MIN, BNX_TX_COAL_TICKS_MAX,
3752             BNX_TX_COAL_TICKS_CHG);
3753 }
3754
3755 static int
3756 bnx_sysctl_rx_coal_bds(SYSCTL_HANDLER_ARGS)
3757 {
3758         struct bnx_softc *sc = arg1;
3759
3760         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3761             &sc->bnx_rx_coal_bds,
3762             BNX_RX_COAL_BDS_MIN, BNX_RX_COAL_BDS_MAX,
3763             BNX_RX_COAL_BDS_CHG);
3764 }
3765
3766 static int
3767 bnx_sysctl_tx_coal_bds(SYSCTL_HANDLER_ARGS)
3768 {
3769         struct bnx_softc *sc = arg1;
3770
3771         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3772             &sc->bnx_tx_coal_bds,
3773             BNX_TX_COAL_BDS_MIN, BNX_TX_COAL_BDS_MAX,
3774             BNX_TX_COAL_BDS_CHG);
3775 }
3776
3777 static int
3778 bnx_sysctl_rx_coal_bds_int(SYSCTL_HANDLER_ARGS)
3779 {
3780         struct bnx_softc *sc = arg1;
3781
3782         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3783             &sc->bnx_rx_coal_bds_int,
3784             BNX_RX_COAL_BDS_MIN, BNX_RX_COAL_BDS_MAX,
3785             BNX_RX_COAL_BDS_INT_CHG);
3786 }
3787
3788 static int
3789 bnx_sysctl_tx_coal_bds_int(SYSCTL_HANDLER_ARGS)
3790 {
3791         struct bnx_softc *sc = arg1;
3792
3793         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3794             &sc->bnx_tx_coal_bds_int,
3795             BNX_TX_COAL_BDS_MIN, BNX_TX_COAL_BDS_MAX,
3796             BNX_TX_COAL_BDS_INT_CHG);
3797 }
3798
3799 static int
3800 bnx_sysctl_coal_chg(SYSCTL_HANDLER_ARGS, uint32_t *coal,
3801     int coal_min, int coal_max, uint32_t coal_chg_mask)
3802 {
3803         struct bnx_softc *sc = arg1;
3804         struct ifnet *ifp = &sc->arpcom.ac_if;
3805         int error = 0, v;
3806
3807         lwkt_serialize_enter(ifp->if_serializer);
3808
3809         v = *coal;
3810         error = sysctl_handle_int(oidp, &v, 0, req);
3811         if (!error && req->newptr != NULL) {
3812                 if (v < coal_min || v > coal_max) {
3813                         error = EINVAL;
3814                 } else {
3815                         *coal = v;
3816                         sc->bnx_coal_chg |= coal_chg_mask;
3817                 }
3818         }
3819
3820         lwkt_serialize_exit(ifp->if_serializer);
3821         return error;
3822 }
3823
3824 static void
3825 bnx_coal_change(struct bnx_softc *sc)
3826 {
3827         struct ifnet *ifp = &sc->arpcom.ac_if;
3828         uint32_t val;
3829
3830         ASSERT_SERIALIZED(ifp->if_serializer);
3831
3832         if (sc->bnx_coal_chg & BNX_RX_COAL_TICKS_CHG) {
3833                 CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS,
3834                             sc->bnx_rx_coal_ticks);
3835                 DELAY(10);
3836                 val = CSR_READ_4(sc, BGE_HCC_RX_COAL_TICKS);
3837
3838                 if (bootverbose) {
3839                         if_printf(ifp, "rx_coal_ticks -> %u\n",
3840                                   sc->bnx_rx_coal_ticks);
3841                 }
3842         }
3843
3844         if (sc->bnx_coal_chg & BNX_TX_COAL_TICKS_CHG) {
3845                 CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS,
3846                             sc->bnx_tx_coal_ticks);
3847                 DELAY(10);
3848                 val = CSR_READ_4(sc, BGE_HCC_TX_COAL_TICKS);
3849
3850                 if (bootverbose) {
3851                         if_printf(ifp, "tx_coal_ticks -> %u\n",
3852                                   sc->bnx_tx_coal_ticks);
3853                 }
3854         }
3855
3856         if (sc->bnx_coal_chg & BNX_RX_COAL_BDS_CHG) {
3857                 CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS,
3858                             sc->bnx_rx_coal_bds);
3859                 DELAY(10);
3860                 val = CSR_READ_4(sc, BGE_HCC_RX_MAX_COAL_BDS);
3861
3862                 if (bootverbose) {
3863                         if_printf(ifp, "rx_coal_bds -> %u\n",
3864                                   sc->bnx_rx_coal_bds);
3865                 }
3866         }
3867
3868         if (sc->bnx_coal_chg & BNX_TX_COAL_BDS_CHG) {
3869                 CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS,
3870                             sc->bnx_tx_coal_bds);
3871                 DELAY(10);
3872                 val = CSR_READ_4(sc, BGE_HCC_TX_MAX_COAL_BDS);
3873
3874                 if (bootverbose) {
3875                         if_printf(ifp, "tx_max_coal_bds -> %u\n",
3876                                   sc->bnx_tx_coal_bds);
3877                 }
3878         }
3879
3880         if (sc->bnx_coal_chg & BNX_RX_COAL_BDS_INT_CHG) {
3881                 CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT,
3882                     sc->bnx_rx_coal_bds_int);
3883                 DELAY(10);
3884                 val = CSR_READ_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT);
3885
3886                 if (bootverbose) {
3887                         if_printf(ifp, "rx_coal_bds_int -> %u\n",
3888                             sc->bnx_rx_coal_bds_int);
3889                 }
3890         }
3891
3892         if (sc->bnx_coal_chg & BNX_TX_COAL_BDS_INT_CHG) {
3893                 CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT,
3894                     sc->bnx_tx_coal_bds_int);
3895                 DELAY(10);
3896                 val = CSR_READ_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT);
3897
3898                 if (bootverbose) {
3899                         if_printf(ifp, "tx_coal_bds_int -> %u\n",
3900                             sc->bnx_tx_coal_bds_int);
3901                 }
3902         }
3903
3904         sc->bnx_coal_chg = 0;
3905 }
3906
3907 static void
3908 bnx_enable_intr(struct bnx_softc *sc)
3909 {
3910         struct ifnet *ifp = &sc->arpcom.ac_if;
3911
3912         lwkt_serialize_handler_enable(ifp->if_serializer);
3913
3914         /*
3915          * Enable interrupt.
3916          */
3917         bnx_writembx(sc, BGE_MBX_IRQ0_LO, sc->bnx_status_tag << 24);
3918         if (sc->bnx_flags & BNX_FLAG_ONESHOT_MSI) {
3919                 /* XXX Linux driver */
3920                 bnx_writembx(sc, BGE_MBX_IRQ0_LO, sc->bnx_status_tag << 24);
3921         }
3922
3923         /*
3924          * Unmask the interrupt when we stop polling.
3925          */
3926         PCI_CLRBIT(sc->bnx_dev, BGE_PCI_MISC_CTL,
3927             BGE_PCIMISCCTL_MASK_PCI_INTR, 4);
3928
3929         /*
3930          * Trigger another interrupt, since above writing
3931          * to interrupt mailbox0 may acknowledge pending
3932          * interrupt.
3933          */
3934         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_SET);
3935 }
3936
3937 static void
3938 bnx_disable_intr(struct bnx_softc *sc)
3939 {
3940         struct ifnet *ifp = &sc->arpcom.ac_if;
3941
3942         /*
3943          * Mask the interrupt when we start polling.
3944          */
3945         PCI_SETBIT(sc->bnx_dev, BGE_PCI_MISC_CTL,
3946             BGE_PCIMISCCTL_MASK_PCI_INTR, 4);
3947
3948         /*
3949          * Acknowledge possible asserted interrupt.
3950          */
3951         bnx_writembx(sc, BGE_MBX_IRQ0_LO, 1);
3952
3953         lwkt_serialize_handler_disable(ifp->if_serializer);
3954 }
3955
3956 static int
3957 bnx_get_eaddr_mem(struct bnx_softc *sc, uint8_t ether_addr[])
3958 {
3959         uint32_t mac_addr;
3960         int ret = 1;
3961
3962         mac_addr = bnx_readmem_ind(sc, 0x0c14);
3963         if ((mac_addr >> 16) == 0x484b) {
3964                 ether_addr[0] = (uint8_t)(mac_addr >> 8);
3965                 ether_addr[1] = (uint8_t)mac_addr;
3966                 mac_addr = bnx_readmem_ind(sc, 0x0c18);
3967                 ether_addr[2] = (uint8_t)(mac_addr >> 24);
3968                 ether_addr[3] = (uint8_t)(mac_addr >> 16);
3969                 ether_addr[4] = (uint8_t)(mac_addr >> 8);
3970                 ether_addr[5] = (uint8_t)mac_addr;
3971                 ret = 0;
3972         }
3973         return ret;
3974 }
3975
3976 static int
3977 bnx_get_eaddr_nvram(struct bnx_softc *sc, uint8_t ether_addr[])
3978 {
3979         int mac_offset = BGE_EE_MAC_OFFSET;
3980
3981         if (BNX_IS_5717_PLUS(sc)) {
3982                 int f;
3983
3984                 f = pci_get_function(sc->bnx_dev);
3985                 if (f & 1)
3986                         mac_offset = BGE_EE_MAC_OFFSET_5717;
3987                 if (f > 1)
3988                         mac_offset += BGE_EE_MAC_OFFSET_5717_OFF;
3989         } else if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
3990                 mac_offset = BGE_EE_MAC_OFFSET_5906;
3991         }
3992
3993         return bnx_read_nvram(sc, ether_addr, mac_offset + 2, ETHER_ADDR_LEN);
3994 }
3995
3996 static int
3997 bnx_get_eaddr_eeprom(struct bnx_softc *sc, uint8_t ether_addr[])
3998 {
3999         if (sc->bnx_flags & BNX_FLAG_NO_EEPROM)
4000                 return 1;
4001
4002         return bnx_read_eeprom(sc, ether_addr, BGE_EE_MAC_OFFSET + 2,
4003                                ETHER_ADDR_LEN);
4004 }
4005
4006 static int
4007 bnx_get_eaddr(struct bnx_softc *sc, uint8_t eaddr[])
4008 {
4009         static const bnx_eaddr_fcn_t bnx_eaddr_funcs[] = {
4010                 /* NOTE: Order is critical */
4011                 bnx_get_eaddr_mem,
4012                 bnx_get_eaddr_nvram,
4013                 bnx_get_eaddr_eeprom,
4014                 NULL
4015         };
4016         const bnx_eaddr_fcn_t *func;
4017
4018         for (func = bnx_eaddr_funcs; *func != NULL; ++func) {
4019                 if ((*func)(sc, eaddr) == 0)
4020                         break;
4021         }
4022         return (*func == NULL ? ENXIO : 0);
4023 }
4024
4025 /*
4026  * NOTE: 'm' is not freed upon failure
4027  */
4028 struct mbuf *
4029 bnx_defrag_shortdma(struct mbuf *m)
4030 {
4031         struct mbuf *n;
4032         int found;
4033
4034         /*
4035          * If device receive two back-to-back send BDs with less than
4036          * or equal to 8 total bytes then the device may hang.  The two
4037          * back-to-back send BDs must in the same frame for this failure
4038          * to occur.  Scan mbuf chains and see whether two back-to-back
4039          * send BDs are there.  If this is the case, allocate new mbuf
4040          * and copy the frame to workaround the silicon bug.
4041          */
4042         for (n = m, found = 0; n != NULL; n = n->m_next) {
4043                 if (n->m_len < 8) {
4044                         found++;
4045                         if (found > 1)
4046                                 break;
4047                         continue;
4048                 }
4049                 found = 0;
4050         }
4051
4052         if (found > 1)
4053                 n = m_defrag(m, MB_DONTWAIT);
4054         else
4055                 n = m;
4056         return n;
4057 }
4058
4059 static void
4060 bnx_stop_block(struct bnx_softc *sc, bus_size_t reg, uint32_t bit)
4061 {
4062         int i;
4063
4064         BNX_CLRBIT(sc, reg, bit);
4065         for (i = 0; i < BNX_TIMEOUT; i++) {
4066                 if ((CSR_READ_4(sc, reg) & bit) == 0)
4067                         return;
4068                 DELAY(100);
4069         }
4070 }
4071
4072 static void
4073 bnx_link_poll(struct bnx_softc *sc)
4074 {
4075         uint32_t status;
4076
4077         status = CSR_READ_4(sc, BGE_MAC_STS);
4078         if ((status & sc->bnx_link_chg) || sc->bnx_link_evt) {
4079                 sc->bnx_link_evt = 0;
4080                 sc->bnx_link_upd(sc, status);
4081         }
4082 }
4083
4084 static void
4085 bnx_enable_msi(struct bnx_softc *sc)
4086 {
4087         uint32_t msi_mode;
4088
4089         msi_mode = CSR_READ_4(sc, BGE_MSI_MODE);
4090         msi_mode |= BGE_MSIMODE_ENABLE;
4091         if (sc->bnx_flags & BNX_FLAG_ONESHOT_MSI) {
4092                 /*
4093                  * NOTE:
4094                  * 5718-PG105-R says that "one shot" mode
4095                  * does not work if MSI is used, however,
4096                  * it obviously works.
4097                  */
4098                 msi_mode &= ~BGE_MSIMODE_ONESHOT_DISABLE;
4099         }
4100         CSR_WRITE_4(sc, BGE_MSI_MODE, msi_mode);
4101 }
4102
4103 static uint32_t
4104 bnx_dma_swap_options(struct bnx_softc *sc)
4105 {
4106         uint32_t dma_options;
4107
4108         dma_options = BGE_MODECTL_WORDSWAP_NONFRAME |
4109             BGE_MODECTL_BYTESWAP_DATA | BGE_MODECTL_WORDSWAP_DATA;
4110 #if BYTE_ORDER == BIG_ENDIAN
4111         dma_options |= BGE_MODECTL_BYTESWAP_NONFRAME;
4112 #endif
4113         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
4114                 dma_options |= BGE_MODECTL_BYTESWAP_B2HRX_DATA |
4115                     BGE_MODECTL_WORDSWAP_B2HRX_DATA | BGE_MODECTL_B2HRX_ENABLE |
4116                     BGE_MODECTL_HTX2B_ENABLE;
4117         }
4118         return dma_options;
4119 }