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 #include "opt_bnx.h"
  37 #include "opt_ifpoll.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 <netinet/ip.h>
  54 #include <netinet/tcp.h>
  55
  56 #include <net/bpf.h>
  57 #include <net/ethernet.h>
  58 #include <net/if.h>
  59 #include <net/if_arp.h>
  60 #include <net/if_dl.h>
  61 #include <net/if_media.h>
  62 #include <net/if_poll.h>
  63 #include <net/if_types.h>
  64 #include <net/ifq_var.h>
  65 #include <net/vlan/if_vlan_var.h>
  66 #include <net/vlan/if_vlan_ether.h>
  67
  68 #include <dev/netif/mii_layer/mii.h>
  69 #include <dev/netif/mii_layer/miivar.h>
  70 #include <dev/netif/mii_layer/brgphyreg.h>
  71
  72 #include <bus/pci/pcidevs.h>
  73 #include <bus/pci/pcireg.h>
  74 #include <bus/pci/pcivar.h>
  75
  76 #include <dev/netif/bge/if_bgereg.h>
  77 #include <dev/netif/bnx/if_bnxvar.h>
  78
  79 /* "device miibus" required.  See GENERIC if you get errors here. */
  80 #include "miibus_if.h"
  81
  82 #define BNX_CSUM_FEATURES       (CSUM_IP | CSUM_TCP | CSUM_UDP)
  83
  84 #define BNX_INTR_CKINTVL        ((10 * hz) / 1000)      /* 10ms */
  85
  86 static const struct bnx_type {
  87         uint16_t                bnx_vid;
  88         uint16_t                bnx_did;
  89         char                    *bnx_name;
  90 } bnx_devs[] = {
  91         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5717,
  92                 "Broadcom BCM5717 Gigabit Ethernet" },
  93         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5718,
  94                 "Broadcom BCM5718 Gigabit Ethernet" },
  95         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5719,
  96                 "Broadcom BCM5719 Gigabit Ethernet" },
  97         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5720_ALT,
  98                 "Broadcom BCM5720 Gigabit Ethernet" },
  99
 100         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57761,
 101                 "Broadcom BCM57761 Gigabit Ethernet" },
 102         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57762,
 103                 "Broadcom BCM57762 Gigabit Ethernet" },
 104         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57765,
 105                 "Broadcom BCM57765 Gigabit Ethernet" },
 106         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57766,
 107                 "Broadcom BCM57766 Gigabit Ethernet" },
 108         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57781,
 109                 "Broadcom BCM57781 Gigabit Ethernet" },
 110         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57782,
 111                 "Broadcom BCM57782 Gigabit Ethernet" },
 112         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57785,
 113                 "Broadcom BCM57785 Gigabit Ethernet" },
 114         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57786,
 115                 "Broadcom BCM57786 Gigabit Ethernet" },
 116         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57791,
 117                 "Broadcom BCM57791 Fast Ethernet" },
 118         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57795,
 119                 "Broadcom BCM57795 Fast Ethernet" },
 120
 121         { 0, 0, NULL }
 122 };
 123
 124 #define BNX_IS_JUMBO_CAPABLE(sc)        ((sc)->bnx_flags & BNX_FLAG_JUMBO)
 125 #define BNX_IS_5717_PLUS(sc)            ((sc)->bnx_flags & BNX_FLAG_5717_PLUS)
 126 #define BNX_IS_57765_PLUS(sc)           ((sc)->bnx_flags & BNX_FLAG_57765_PLUS)
 127 #define BNX_IS_57765_FAMILY(sc)  \
 128         ((sc)->bnx_flags & BNX_FLAG_57765_FAMILY)
 129
 130 typedef int     (*bnx_eaddr_fcn_t)(struct bnx_softc *, uint8_t[]);
 131
 132 static int      bnx_probe(device_t);
 133 static int      bnx_attach(device_t);
 134 static int      bnx_detach(device_t);
 135 static void     bnx_shutdown(device_t);
 136 static int      bnx_suspend(device_t);
 137 static int      bnx_resume(device_t);
 138 static int      bnx_miibus_readreg(device_t, int, int);
 139 static int      bnx_miibus_writereg(device_t, int, int, int);
 140 static void     bnx_miibus_statchg(device_t);
 141
 142 #ifdef IFPOLL_ENABLE
 143 static void     bnx_npoll(struct ifnet *, struct ifpoll_info *);
 144 static void     bnx_npoll_compat(struct ifnet *, void *, int);
 145 #endif
 146 static void     bnx_intr_legacy(void *);
 147 static void     bnx_msi(void *);
 148 static void     bnx_msi_oneshot(void *);
 149 static void     bnx_intr(struct bnx_softc *);
 150 static void     bnx_enable_intr(struct bnx_softc *);
 151 static void     bnx_disable_intr(struct bnx_softc *);
 152 static void     bnx_txeof(struct bnx_softc *, uint16_t);
 153 static void     bnx_rxeof(struct bnx_softc *, uint16_t);
 154
 155 static void     bnx_start(struct ifnet *);
 156 static int      bnx_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
 157 static void     bnx_init(void *);
 158 static void     bnx_stop(struct bnx_softc *);
 159 static void     bnx_watchdog(struct ifnet *);
 160 static int      bnx_ifmedia_upd(struct ifnet *);
 161 static void     bnx_ifmedia_sts(struct ifnet *, struct ifmediareq *);
 162 static void     bnx_tick(void *);
 163
 164 static int      bnx_alloc_jumbo_mem(struct bnx_softc *);
 165 static void     bnx_free_jumbo_mem(struct bnx_softc *);
 166 static struct bnx_jslot
 167                 *bnx_jalloc(struct bnx_softc *);
 168 static void     bnx_jfree(void *);
 169 static void     bnx_jref(void *);
 170 static int      bnx_newbuf_std(struct bnx_softc *, int, int);
 171 static int      bnx_newbuf_jumbo(struct bnx_softc *, int, int);
 172 static void     bnx_setup_rxdesc_std(struct bnx_softc *, int);
 173 static void     bnx_setup_rxdesc_jumbo(struct bnx_softc *, int);
 174 static int      bnx_init_rx_ring_std(struct bnx_softc *);
 175 static void     bnx_free_rx_ring_std(struct bnx_softc *);
 176 static int      bnx_init_rx_ring_jumbo(struct bnx_softc *);
 177 static void     bnx_free_rx_ring_jumbo(struct bnx_softc *);
 178 static void     bnx_free_tx_ring(struct bnx_softc *);
 179 static int      bnx_init_tx_ring(struct bnx_softc *);
 180 static int      bnx_dma_alloc(struct bnx_softc *);
 181 static void     bnx_dma_free(struct bnx_softc *);
 182 static int      bnx_dma_block_alloc(struct bnx_softc *, bus_size_t,
 183                     bus_dma_tag_t *, bus_dmamap_t *, void **, bus_addr_t *);
 184 static void     bnx_dma_block_free(bus_dma_tag_t, bus_dmamap_t, void *);
 185 static struct mbuf *
 186                 bnx_defrag_shortdma(struct mbuf *);
 187 static int      bnx_encap(struct bnx_softc *, struct mbuf **, uint32_t *);
 188 static int      bnx_setup_tso(struct bnx_softc *, struct mbuf **,
 189                     uint16_t *, uint16_t *);
 190
 191 static void     bnx_reset(struct bnx_softc *);
 192 static int      bnx_chipinit(struct bnx_softc *);
 193 static int      bnx_blockinit(struct bnx_softc *);
 194 static void     bnx_stop_block(struct bnx_softc *, bus_size_t, uint32_t);
 195 static void     bnx_enable_msi(struct bnx_softc *sc);
 196 static void     bnx_setmulti(struct bnx_softc *);
 197 static void     bnx_setpromisc(struct bnx_softc *);
 198 static void     bnx_stats_update_regs(struct bnx_softc *);
 199 static uint32_t bnx_dma_swap_options(struct bnx_softc *);
 200
 201 static uint32_t bnx_readmem_ind(struct bnx_softc *, uint32_t);
 202 static void     bnx_writemem_ind(struct bnx_softc *, uint32_t, uint32_t);
 203 #ifdef notdef
 204 static uint32_t bnx_readreg_ind(struct bnx_softc *, uint32_t);
 205 #endif
 206 static void     bnx_writereg_ind(struct bnx_softc *, uint32_t, uint32_t);
 207 static void     bnx_writemem_direct(struct bnx_softc *, uint32_t, uint32_t);
 208 static void     bnx_writembx(struct bnx_softc *, int, int);
 209 static uint8_t  bnx_nvram_getbyte(struct bnx_softc *, int, uint8_t *);
 210 static int      bnx_read_nvram(struct bnx_softc *, caddr_t, int, int);
 211 static uint8_t  bnx_eeprom_getbyte(struct bnx_softc *, uint32_t, uint8_t *);
 212 static int      bnx_read_eeprom(struct bnx_softc *, caddr_t, uint32_t, size_t);
 213
 214 static void     bnx_tbi_link_upd(struct bnx_softc *, uint32_t);
 215 static void     bnx_copper_link_upd(struct bnx_softc *, uint32_t);
 216 static void     bnx_autopoll_link_upd(struct bnx_softc *, uint32_t);
 217 static void     bnx_link_poll(struct bnx_softc *);
 218
 219 static int      bnx_get_eaddr_mem(struct bnx_softc *, uint8_t[]);
 220 static int      bnx_get_eaddr_nvram(struct bnx_softc *, uint8_t[]);
 221 static int      bnx_get_eaddr_eeprom(struct bnx_softc *, uint8_t[]);
 222 static int      bnx_get_eaddr(struct bnx_softc *, uint8_t[]);
 223
 224 static void     bnx_coal_change(struct bnx_softc *);
 225 static int      bnx_sysctl_rx_coal_ticks(SYSCTL_HANDLER_ARGS);
 226 static int      bnx_sysctl_tx_coal_ticks(SYSCTL_HANDLER_ARGS);
 227 static int      bnx_sysctl_rx_coal_bds(SYSCTL_HANDLER_ARGS);
 228 static int      bnx_sysctl_tx_coal_bds(SYSCTL_HANDLER_ARGS);
 229 static int      bnx_sysctl_rx_coal_bds_int(SYSCTL_HANDLER_ARGS);
 230 static int      bnx_sysctl_tx_coal_bds_int(SYSCTL_HANDLER_ARGS);
 231 static int      bnx_sysctl_coal_chg(SYSCTL_HANDLER_ARGS, uint32_t *,
 232                     int, int, uint32_t);
 233 #ifdef IFPOLL_ENABLE
 234 static int      bnx_sysctl_npoll_stfrac(SYSCTL_HANDLER_ARGS);
 235 static int      bnx_sysctl_npoll_cpuid(SYSCTL_HANDLER_ARGS);
 236 #endif
 237
 238 static int      bnx_msi_enable = 1;
 239 TUNABLE_INT("hw.bnx.msi.enable", &bnx_msi_enable);
 240
 241 static device_method_t bnx_methods[] = {
 242         /* Device interface */
 243         DEVMETHOD(device_probe,         bnx_probe),
 244         DEVMETHOD(device_attach,        bnx_attach),
 245         DEVMETHOD(device_detach,        bnx_detach),
 246         DEVMETHOD(device_shutdown,      bnx_shutdown),
 247         DEVMETHOD(device_suspend,       bnx_suspend),
 248         DEVMETHOD(device_resume,        bnx_resume),
 249
 250         /* bus interface */
 251         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 252         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
 253
 254         /* MII interface */
 255         DEVMETHOD(miibus_readreg,       bnx_miibus_readreg),
 256         DEVMETHOD(miibus_writereg,      bnx_miibus_writereg),
 257         DEVMETHOD(miibus_statchg,       bnx_miibus_statchg),
 258
 259         { 0, 0 }
 260 };
 261
 262 static DEFINE_CLASS_0(bnx, bnx_driver, bnx_methods, sizeof(struct bnx_softc));
 263 static devclass_t bnx_devclass;
 264
 265 DECLARE_DUMMY_MODULE(if_bnx);
 266 DRIVER_MODULE(if_bnx, pci, bnx_driver, bnx_devclass, NULL, NULL);
 267 DRIVER_MODULE(miibus, bnx, miibus_driver, miibus_devclass, NULL, NULL);
 268
 269 static uint32_t
 270 bnx_readmem_ind(struct bnx_softc *sc, uint32_t off)
 271 {
 272         device_t dev = sc->bnx_dev;
 273         uint32_t val;
 274
 275         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
 276             off >= BGE_STATS_BLOCK && off < BGE_SEND_RING_1_TO_4)
 277                 return 0;
 278
 279         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 280         val = pci_read_config(dev, BGE_PCI_MEMWIN_DATA, 4);
 281         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
 282         return (val);
 283 }
 284
 285 static void
 286 bnx_writemem_ind(struct bnx_softc *sc, uint32_t off, uint32_t val)
 287 {
 288         device_t dev = sc->bnx_dev;
 289
 290         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
 291             off >= BGE_STATS_BLOCK && off < BGE_SEND_RING_1_TO_4)
 292                 return;
 293
 294         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 295         pci_write_config(dev, BGE_PCI_MEMWIN_DATA, val, 4);
 296         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
 297 }
 298
 299 #ifdef notdef
 300 static uint32_t
 301 bnx_readreg_ind(struct bnx_softc *sc, uin32_t off)
 302 {
 303         device_t dev = sc->bnx_dev;
 304
 305         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 306         return(pci_read_config(dev, BGE_PCI_REG_DATA, 4));
 307 }
 308 #endif
 309
 310 static void
 311 bnx_writereg_ind(struct bnx_softc *sc, uint32_t off, uint32_t val)
 312 {
 313         device_t dev = sc->bnx_dev;
 314
 315         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 316         pci_write_config(dev, BGE_PCI_REG_DATA, val, 4);
 317 }
 318
 319 static void
 320 bnx_writemem_direct(struct bnx_softc *sc, uint32_t off, uint32_t val)
 321 {
 322         CSR_WRITE_4(sc, off, val);
 323 }
 324
 325 static void
 326 bnx_writembx(struct bnx_softc *sc, int off, int val)
 327 {
 328         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906)
 329                 off += BGE_LPMBX_IRQ0_HI - BGE_MBX_IRQ0_HI;
 330
 331         CSR_WRITE_4(sc, off, val);
 332 }
 333
 334 static uint8_t
 335 bnx_nvram_getbyte(struct bnx_softc *sc, int addr, uint8_t *dest)
 336 {
 337         uint32_t access, byte = 0;
 338         int i;
 339
 340         /* Lock. */
 341         CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_SET1);
 342         for (i = 0; i < 8000; i++) {
 343                 if (CSR_READ_4(sc, BGE_NVRAM_SWARB) & BGE_NVRAMSWARB_GNT1)
 344                         break;
 345                 DELAY(20);
 346         }
 347         if (i == 8000)
 348                 return (1);
 349
 350         /* Enable access. */
 351         access = CSR_READ_4(sc, BGE_NVRAM_ACCESS);
 352         CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access | BGE_NVRAMACC_ENABLE);
 353
 354         CSR_WRITE_4(sc, BGE_NVRAM_ADDR, addr & 0xfffffffc);
 355         CSR_WRITE_4(sc, BGE_NVRAM_CMD, BGE_NVRAM_READCMD);
 356         for (i = 0; i < BNX_TIMEOUT * 10; i++) {
 357                 DELAY(10);
 358                 if (CSR_READ_4(sc, BGE_NVRAM_CMD) & BGE_NVRAMCMD_DONE) {
 359                         DELAY(10);
 360                         break;
 361                 }
 362         }
 363
 364         if (i == BNX_TIMEOUT * 10) {
 365                 if_printf(&sc->arpcom.ac_if, "nvram read timed out\n");
 366                 return (1);
 367         }
 368
 369         /* Get result. */
 370         byte = CSR_READ_4(sc, BGE_NVRAM_RDDATA);
 371
 372         *dest = (bswap32(byte) >> ((addr % 4) * 8)) & 0xFF;
 373
 374         /* Disable access. */
 375         CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access);
 376
 377         /* Unlock. */
 378         CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_CLR1);
 379         CSR_READ_4(sc, BGE_NVRAM_SWARB);
 380
 381         return (0);
 382 }
 383
 384 /*
 385  * Read a sequence of bytes from NVRAM.
 386  */
 387 static int
 388 bnx_read_nvram(struct bnx_softc *sc, caddr_t dest, int off, int cnt)
 389 {
 390         int err = 0, i;
 391         uint8_t byte = 0;
 392
 393         if (sc->bnx_asicrev != BGE_ASICREV_BCM5906)
 394                 return (1);
 395
 396         for (i = 0; i < cnt; i++) {
 397                 err = bnx_nvram_getbyte(sc, off + i, &byte);
 398                 if (err)
 399                         break;
 400                 *(dest + i) = byte;
 401         }
 402
 403         return (err ? 1 : 0);
 404 }
 405
 406 /*
 407  * Read a byte of data stored in the EEPROM at address 'addr.' The
 408  * BCM570x supports both the traditional bitbang interface and an
 409  * auto access interface for reading the EEPROM. We use the auto
 410  * access method.
 411  */
 412 static uint8_t
 413 bnx_eeprom_getbyte(struct bnx_softc *sc, uint32_t addr, uint8_t *dest)
 414 {
 415         int i;
 416         uint32_t byte = 0;
 417
 418         /*
 419          * Enable use of auto EEPROM access so we can avoid
 420          * having to use the bitbang method.
 421          */
 422         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM);
 423
 424         /* Reset the EEPROM, load the clock period. */
 425         CSR_WRITE_4(sc, BGE_EE_ADDR,
 426             BGE_EEADDR_RESET|BGE_EEHALFCLK(BGE_HALFCLK_384SCL));
 427         DELAY(20);
 428
 429         /* Issue the read EEPROM command. */
 430         CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr);
 431
 432         /* Wait for completion */
 433         for(i = 0; i < BNX_TIMEOUT * 10; i++) {
 434                 DELAY(10);
 435                 if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE)
 436                         break;
 437         }
 438
 439         if (i == BNX_TIMEOUT) {
 440                 if_printf(&sc->arpcom.ac_if, "eeprom read timed out\n");
 441                 return(1);
 442         }
 443
 444         /* Get result. */
 445         byte = CSR_READ_4(sc, BGE_EE_DATA);
 446
 447         *dest = (byte >> ((addr % 4) * 8)) & 0xFF;
 448
 449         return(0);
 450 }
 451
 452 /*
 453  * Read a sequence of bytes from the EEPROM.
 454  */
 455 static int
 456 bnx_read_eeprom(struct bnx_softc *sc, caddr_t dest, uint32_t off, size_t len)
 457 {
 458         size_t i;
 459         int err;
 460         uint8_t byte;
 461
 462         for (byte = 0, err = 0, i = 0; i < len; i++) {
 463                 err = bnx_eeprom_getbyte(sc, off + i, &byte);
 464                 if (err)
 465                         break;
 466                 *(dest + i) = byte;
 467         }
 468
 469         return(err ? 1 : 0);
 470 }
 471
 472 static int
 473 bnx_miibus_readreg(device_t dev, int phy, int reg)
 474 {
 475         struct bnx_softc *sc = device_get_softc(dev);
 476         uint32_t val;
 477         int i;
 478
 479         KASSERT(phy == sc->bnx_phyno,
 480             ("invalid phyno %d, should be %d", phy, sc->bnx_phyno));
 481
 482         /* Clear the autopoll bit if set, otherwise may trigger PCI errors. */
 483         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 484                 CSR_WRITE_4(sc, BGE_MI_MODE,
 485                     sc->bnx_mi_mode & ~BGE_MIMODE_AUTOPOLL);
 486                 DELAY(80);
 487         }
 488
 489         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ | BGE_MICOMM_BUSY |
 490             BGE_MIPHY(phy) | BGE_MIREG(reg));
 491
 492         /* Poll for the PHY register access to complete. */
 493         for (i = 0; i < BNX_TIMEOUT; i++) {
 494                 DELAY(10);
 495                 val = CSR_READ_4(sc, BGE_MI_COMM);
 496                 if ((val & BGE_MICOMM_BUSY) == 0) {
 497                         DELAY(5);
 498                         val = CSR_READ_4(sc, BGE_MI_COMM);
 499                         break;
 500                 }
 501         }
 502         if (i == BNX_TIMEOUT) {
 503                 if_printf(&sc->arpcom.ac_if, "PHY read timed out "
 504                     "(phy %d, reg %d, val 0x%08x)\n", phy, reg, val);
 505                 val = 0;
 506         }
 507
 508         /* Restore the autopoll bit if necessary. */
 509         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 510                 CSR_WRITE_4(sc, BGE_MI_MODE, sc->bnx_mi_mode);
 511                 DELAY(80);
 512         }
 513
 514         if (val & BGE_MICOMM_READFAIL)
 515                 return 0;
 516
 517         return (val & 0xFFFF);
 518 }
 519
 520 static int
 521 bnx_miibus_writereg(device_t dev, int phy, int reg, int val)
 522 {
 523         struct bnx_softc *sc = device_get_softc(dev);
 524         int i;
 525
 526         KASSERT(phy == sc->bnx_phyno,
 527             ("invalid phyno %d, should be %d", phy, sc->bnx_phyno));
 528
 529         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
 530             (reg == BRGPHY_MII_1000CTL || reg == BRGPHY_MII_AUXCTL))
 531                return 0;
 532
 533         /* Clear the autopoll bit if set, otherwise may trigger PCI errors. */
 534         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 535                 CSR_WRITE_4(sc, BGE_MI_MODE,
 536                     sc->bnx_mi_mode & ~BGE_MIMODE_AUTOPOLL);
 537                 DELAY(80);
 538         }
 539
 540         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE | BGE_MICOMM_BUSY |
 541             BGE_MIPHY(phy) | BGE_MIREG(reg) | val);
 542
 543         for (i = 0; i < BNX_TIMEOUT; i++) {
 544                 DELAY(10);
 545                 if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY)) {
 546                         DELAY(5);
 547                         CSR_READ_4(sc, BGE_MI_COMM); /* dummy read */
 548                         break;
 549                 }
 550         }
 551         if (i == BNX_TIMEOUT) {
 552                 if_printf(&sc->arpcom.ac_if, "PHY write timed out "
 553                     "(phy %d, reg %d, val %d)\n", phy, reg, val);
 554         }
 555
 556         /* Restore the autopoll bit if necessary. */
 557         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 558                 CSR_WRITE_4(sc, BGE_MI_MODE, sc->bnx_mi_mode);
 559                 DELAY(80);
 560         }
 561
 562         return 0;
 563 }
 564
 565 static void
 566 bnx_miibus_statchg(device_t dev)
 567 {
 568         struct bnx_softc *sc;
 569         struct mii_data *mii;
 570
 571         sc = device_get_softc(dev);
 572         mii = device_get_softc(sc->bnx_miibus);
 573
 574         if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
 575             (IFM_ACTIVE | IFM_AVALID)) {
 576                 switch (IFM_SUBTYPE(mii->mii_media_active)) {
 577                 case IFM_10_T:
 578                 case IFM_100_TX:
 579                         sc->bnx_link = 1;
 580                         break;
 581                 case IFM_1000_T:
 582                 case IFM_1000_SX:
 583                 case IFM_2500_SX:
 584                         if (sc->bnx_asicrev != BGE_ASICREV_BCM5906)
 585                                 sc->bnx_link = 1;
 586                         else
 587                                 sc->bnx_link = 0;
 588                         break;
 589                 default:
 590                         sc->bnx_link = 0;
 591                         break;
 592                 }
 593         } else {
 594                 sc->bnx_link = 0;
 595         }
 596         if (sc->bnx_link == 0)
 597                 return;
 598
 599         BNX_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE);
 600         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T ||
 601             IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) {
 602                 BNX_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII);
 603         } else {
 604                 BNX_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII);
 605         }
 606
 607         if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
 608                 BNX_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 609         } else {
 610                 BNX_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 611         }
 612 }
 613
 614 /*
 615  * Memory management for jumbo frames.
 616  */
 617 static int
 618 bnx_alloc_jumbo_mem(struct bnx_softc *sc)
 619 {
 620         struct ifnet *ifp = &sc->arpcom.ac_if;
 621         struct bnx_jslot *entry;
 622         uint8_t *ptr;
 623         bus_addr_t paddr;
 624         int i, error;
 625
 626         /*
 627          * Create tag for jumbo mbufs.
 628          * This is really a bit of a kludge. We allocate a special
 629          * jumbo buffer pool which (thanks to the way our DMA
 630          * memory allocation works) will consist of contiguous
 631          * pages. This means that even though a jumbo buffer might
 632          * be larger than a page size, we don't really need to
 633          * map it into more than one DMA segment. However, the
 634          * default mbuf tag will result in multi-segment mappings,
 635          * so we have to create a special jumbo mbuf tag that
 636          * lets us get away with mapping the jumbo buffers as
 637          * a single segment. I think eventually the driver should
 638          * be changed so that it uses ordinary mbufs and cluster
 639          * buffers, i.e. jumbo frames can span multiple DMA
 640          * descriptors. But that's a project for another day.
 641          */
 642
 643         /*
 644          * Create DMA stuffs for jumbo RX ring.
 645          */
 646         error = bnx_dma_block_alloc(sc, BGE_JUMBO_RX_RING_SZ,
 647                                     &sc->bnx_cdata.bnx_rx_jumbo_ring_tag,
 648                                     &sc->bnx_cdata.bnx_rx_jumbo_ring_map,
 649                                     (void *)&sc->bnx_ldata.bnx_rx_jumbo_ring,
 650                                     &sc->bnx_ldata.bnx_rx_jumbo_ring_paddr);
 651         if (error) {
 652                 if_printf(ifp, "could not create jumbo RX ring\n");
 653                 return error;
 654         }
 655
 656         /*
 657          * Create DMA stuffs for jumbo buffer block.
 658          */
 659         error = bnx_dma_block_alloc(sc, BNX_JMEM,
 660                                     &sc->bnx_cdata.bnx_jumbo_tag,
 661                                     &sc->bnx_cdata.bnx_jumbo_map,
 662                                     (void **)&sc->bnx_ldata.bnx_jumbo_buf,
 663                                     &paddr);
 664         if (error) {
 665                 if_printf(ifp, "could not create jumbo buffer\n");
 666                 return error;
 667         }
 668
 669         SLIST_INIT(&sc->bnx_jfree_listhead);
 670
 671         /*
 672          * Now divide it up into 9K pieces and save the addresses
 673          * in an array. Note that we play an evil trick here by using
 674          * the first few bytes in the buffer to hold the the address
 675          * of the softc structure for this interface. This is because
 676          * bnx_jfree() needs it, but it is called by the mbuf management
 677          * code which will not pass it to us explicitly.
 678          */
 679         for (i = 0, ptr = sc->bnx_ldata.bnx_jumbo_buf; i < BNX_JSLOTS; i++) {
 680                 entry = &sc->bnx_cdata.bnx_jslots[i];
 681                 entry->bnx_sc = sc;
 682                 entry->bnx_buf = ptr;
 683                 entry->bnx_paddr = paddr;
 684                 entry->bnx_inuse = 0;
 685                 entry->bnx_slot = i;
 686                 SLIST_INSERT_HEAD(&sc->bnx_jfree_listhead, entry, jslot_link);
 687
 688                 ptr += BNX_JLEN;
 689                 paddr += BNX_JLEN;
 690         }
 691         return 0;
 692 }
 693
 694 static void
 695 bnx_free_jumbo_mem(struct bnx_softc *sc)
 696 {
 697         /* Destroy jumbo RX ring. */
 698         bnx_dma_block_free(sc->bnx_cdata.bnx_rx_jumbo_ring_tag,
 699                            sc->bnx_cdata.bnx_rx_jumbo_ring_map,
 700                            sc->bnx_ldata.bnx_rx_jumbo_ring);
 701
 702         /* Destroy jumbo buffer block. */
 703         bnx_dma_block_free(sc->bnx_cdata.bnx_jumbo_tag,
 704                            sc->bnx_cdata.bnx_jumbo_map,
 705                            sc->bnx_ldata.bnx_jumbo_buf);
 706 }
 707
 708 /*
 709  * Allocate a jumbo buffer.
 710  */
 711 static struct bnx_jslot *
 712 bnx_jalloc(struct bnx_softc *sc)
 713 {
 714         struct bnx_jslot *entry;
 715
 716         lwkt_serialize_enter(&sc->bnx_jslot_serializer);
 717         entry = SLIST_FIRST(&sc->bnx_jfree_listhead);
 718         if (entry) {
 719                 SLIST_REMOVE_HEAD(&sc->bnx_jfree_listhead, jslot_link);
 720                 entry->bnx_inuse = 1;
 721         } else {
 722                 if_printf(&sc->arpcom.ac_if, "no free jumbo buffers\n");
 723         }
 724         lwkt_serialize_exit(&sc->bnx_jslot_serializer);
 725         return(entry);
 726 }
 727
 728 /*
 729  * Adjust usage count on a jumbo buffer.
 730  */
 731 static void
 732 bnx_jref(void *arg)
 733 {
 734         struct bnx_jslot *entry = (struct bnx_jslot *)arg;
 735         struct bnx_softc *sc = entry->bnx_sc;
 736
 737         if (sc == NULL)
 738                 panic("bnx_jref: can't find softc pointer!");
 739
 740         if (&sc->bnx_cdata.bnx_jslots[entry->bnx_slot] != entry) {
 741                 panic("bnx_jref: asked to reference buffer "
 742                     "that we don't manage!");
 743         } else if (entry->bnx_inuse == 0) {
 744                 panic("bnx_jref: buffer already free!");
 745         } else {
 746                 atomic_add_int(&entry->bnx_inuse, 1);
 747         }
 748 }
 749
 750 /*
 751  * Release a jumbo buffer.
 752  */
 753 static void
 754 bnx_jfree(void *arg)
 755 {
 756         struct bnx_jslot *entry = (struct bnx_jslot *)arg;
 757         struct bnx_softc *sc = entry->bnx_sc;
 758
 759         if (sc == NULL)
 760                 panic("bnx_jfree: can't find softc pointer!");
 761
 762         if (&sc->bnx_cdata.bnx_jslots[entry->bnx_slot] != entry) {
 763                 panic("bnx_jfree: asked to free buffer that we don't manage!");
 764         } else if (entry->bnx_inuse == 0) {
 765                 panic("bnx_jfree: buffer already free!");
 766         } else {
 767                 /*
 768                  * Possible MP race to 0, use the serializer.  The atomic insn
 769                  * is still needed for races against bnx_jref().
 770                  */
 771                 lwkt_serialize_enter(&sc->bnx_jslot_serializer);
 772                 atomic_subtract_int(&entry->bnx_inuse, 1);
 773                 if (entry->bnx_inuse == 0) {
 774                         SLIST_INSERT_HEAD(&sc->bnx_jfree_listhead,
 775                                           entry, jslot_link);
 776                 }
 777                 lwkt_serialize_exit(&sc->bnx_jslot_serializer);
 778         }
 779 }
 780
 781
 782 /*
 783  * Intialize a standard receive ring descriptor.
 784  */
 785 static int
 786 bnx_newbuf_std(struct bnx_softc *sc, int i, int init)
 787 {
 788         struct mbuf *m_new = NULL;
 789         bus_dma_segment_t seg;
 790         bus_dmamap_t map;
 791         int error, nsegs;
 792
 793         m_new = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
 794         if (m_new == NULL)
 795                 return ENOBUFS;
 796         m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
 797         m_adj(m_new, ETHER_ALIGN);
 798
 799         error = bus_dmamap_load_mbuf_segment(sc->bnx_cdata.bnx_rx_mtag,
 800                         sc->bnx_cdata.bnx_rx_tmpmap, m_new,
 801                         &seg, 1, &nsegs, BUS_DMA_NOWAIT);
 802         if (error) {
 803                 m_freem(m_new);
 804                 return error;
 805         }
 806
 807         if (!init) {
 808                 bus_dmamap_sync(sc->bnx_cdata.bnx_rx_mtag,
 809                                 sc->bnx_cdata.bnx_rx_std_dmamap[i],
 810                                 BUS_DMASYNC_POSTREAD);
 811                 bus_dmamap_unload(sc->bnx_cdata.bnx_rx_mtag,
 812                         sc->bnx_cdata.bnx_rx_std_dmamap[i]);
 813         }
 814
 815         map = sc->bnx_cdata.bnx_rx_tmpmap;
 816         sc->bnx_cdata.bnx_rx_tmpmap = sc->bnx_cdata.bnx_rx_std_dmamap[i];
 817         sc->bnx_cdata.bnx_rx_std_dmamap[i] = map;
 818
 819         sc->bnx_cdata.bnx_rx_std_chain[i].bnx_mbuf = m_new;
 820         sc->bnx_cdata.bnx_rx_std_chain[i].bnx_paddr = seg.ds_addr;
 821
 822         bnx_setup_rxdesc_std(sc, i);
 823         return 0;
 824 }
 825
 826 static void
 827 bnx_setup_rxdesc_std(struct bnx_softc *sc, int i)
 828 {
 829         struct bnx_rxchain *rc;
 830         struct bge_rx_bd *r;
 831
 832         rc = &sc->bnx_cdata.bnx_rx_std_chain[i];
 833         r = &sc->bnx_ldata.bnx_rx_std_ring[i];
 834
 835         r->bge_addr.bge_addr_lo = BGE_ADDR_LO(rc->bnx_paddr);
 836         r->bge_addr.bge_addr_hi = BGE_ADDR_HI(rc->bnx_paddr);
 837         r->bge_len = rc->bnx_mbuf->m_len;
 838         r->bge_idx = i;
 839         r->bge_flags = BGE_RXBDFLAG_END;
 840 }
 841
 842 /*
 843  * Initialize a jumbo receive ring descriptor. This allocates
 844  * a jumbo buffer from the pool managed internally by the driver.
 845  */
 846 static int
 847 bnx_newbuf_jumbo(struct bnx_softc *sc, int i, int init)
 848 {
 849         struct mbuf *m_new = NULL;
 850         struct bnx_jslot *buf;
 851         bus_addr_t paddr;
 852
 853         /* Allocate the mbuf. */
 854         MGETHDR(m_new, init ? MB_WAIT : MB_DONTWAIT, MT_DATA);
 855         if (m_new == NULL)
 856                 return ENOBUFS;
 857
 858         /* Allocate the jumbo buffer */
 859         buf = bnx_jalloc(sc);
 860         if (buf == NULL) {
 861                 m_freem(m_new);
 862                 return ENOBUFS;
 863         }
 864
 865         /* Attach the buffer to the mbuf. */
 866         m_new->m_ext.ext_arg = buf;
 867         m_new->m_ext.ext_buf = buf->bnx_buf;
 868         m_new->m_ext.ext_free = bnx_jfree;
 869         m_new->m_ext.ext_ref = bnx_jref;
 870         m_new->m_ext.ext_size = BNX_JUMBO_FRAMELEN;
 871
 872         m_new->m_flags |= M_EXT;
 873
 874         m_new->m_data = m_new->m_ext.ext_buf;
 875         m_new->m_len = m_new->m_pkthdr.len = m_new->m_ext.ext_size;
 876
 877         paddr = buf->bnx_paddr;
 878         m_adj(m_new, ETHER_ALIGN);
 879         paddr += ETHER_ALIGN;
 880
 881         /* Save necessary information */
 882         sc->bnx_cdata.bnx_rx_jumbo_chain[i].bnx_mbuf = m_new;
 883         sc->bnx_cdata.bnx_rx_jumbo_chain[i].bnx_paddr = paddr;
 884
 885         /* Set up the descriptor. */
 886         bnx_setup_rxdesc_jumbo(sc, i);
 887         return 0;
 888 }
 889
 890 static void
 891 bnx_setup_rxdesc_jumbo(struct bnx_softc *sc, int i)
 892 {
 893         struct bge_rx_bd *r;
 894         struct bnx_rxchain *rc;
 895
 896         r = &sc->bnx_ldata.bnx_rx_jumbo_ring[i];
 897         rc = &sc->bnx_cdata.bnx_rx_jumbo_chain[i];
 898
 899         r->bge_addr.bge_addr_lo = BGE_ADDR_LO(rc->bnx_paddr);
 900         r->bge_addr.bge_addr_hi = BGE_ADDR_HI(rc->bnx_paddr);
 901         r->bge_len = rc->bnx_mbuf->m_len;
 902         r->bge_idx = i;
 903         r->bge_flags = BGE_RXBDFLAG_END|BGE_RXBDFLAG_JUMBO_RING;
 904 }
 905
 906 static int
 907 bnx_init_rx_ring_std(struct bnx_softc *sc)
 908 {
 909         int i, error;
 910
 911         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
 912                 error = bnx_newbuf_std(sc, i, 1);
 913                 if (error)
 914                         return error;
 915         };
 916
 917         sc->bnx_std = BGE_STD_RX_RING_CNT - 1;
 918         bnx_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bnx_std);
 919
 920         return(0);
 921 }
 922
 923 static void
 924 bnx_free_rx_ring_std(struct bnx_softc *sc)
 925 {
 926         int i;
 927
 928         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
 929                 struct bnx_rxchain *rc = &sc->bnx_cdata.bnx_rx_std_chain[i];
 930
 931                 if (rc->bnx_mbuf != NULL) {
 932                         bus_dmamap_unload(sc->bnx_cdata.bnx_rx_mtag,
 933                                           sc->bnx_cdata.bnx_rx_std_dmamap[i]);
 934                         m_freem(rc->bnx_mbuf);
 935                         rc->bnx_mbuf = NULL;
 936                 }
 937                 bzero(&sc->bnx_ldata.bnx_rx_std_ring[i],
 938                     sizeof(struct bge_rx_bd));
 939         }
 940 }
 941
 942 static int
 943 bnx_init_rx_ring_jumbo(struct bnx_softc *sc)
 944 {
 945         struct bge_rcb *rcb;
 946         int i, error;
 947
 948         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 949                 error = bnx_newbuf_jumbo(sc, i, 1);
 950                 if (error)
 951                         return error;
 952         };
 953
 954         sc->bnx_jumbo = BGE_JUMBO_RX_RING_CNT - 1;
 955
 956         rcb = &sc->bnx_ldata.bnx_info.bnx_jumbo_rx_rcb;
 957         rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0, 0);
 958         CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
 959
 960         bnx_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bnx_jumbo);
 961
 962         return(0);
 963 }
 964
 965 static void
 966 bnx_free_rx_ring_jumbo(struct bnx_softc *sc)
 967 {
 968         int i;
 969
 970         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 971                 struct bnx_rxchain *rc = &sc->bnx_cdata.bnx_rx_jumbo_chain[i];
 972
 973                 if (rc->bnx_mbuf != NULL) {
 974                         m_freem(rc->bnx_mbuf);
 975                         rc->bnx_mbuf = NULL;
 976                 }
 977                 bzero(&sc->bnx_ldata.bnx_rx_jumbo_ring[i],
 978                     sizeof(struct bge_rx_bd));
 979         }
 980 }
 981
 982 static void
 983 bnx_free_tx_ring(struct bnx_softc *sc)
 984 {
 985         int i;
 986
 987         for (i = 0; i < BGE_TX_RING_CNT; i++) {
 988                 if (sc->bnx_cdata.bnx_tx_chain[i] != NULL) {
 989                         bus_dmamap_unload(sc->bnx_cdata.bnx_tx_mtag,
 990                                           sc->bnx_cdata.bnx_tx_dmamap[i]);
 991                         m_freem(sc->bnx_cdata.bnx_tx_chain[i]);
 992                         sc->bnx_cdata.bnx_tx_chain[i] = NULL;
 993                 }
 994                 bzero(&sc->bnx_ldata.bnx_tx_ring[i],
 995                     sizeof(struct bge_tx_bd));
 996         }
 997 }
 998
 999 static int
1000 bnx_init_tx_ring(struct bnx_softc *sc)
1001 {
1002         sc->bnx_txcnt = 0;
1003         sc->bnx_tx_saved_considx = 0;
1004         sc->bnx_tx_prodidx = 0;
1005
1006         /* Initialize transmit producer index for host-memory send ring. */
1007         bnx_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bnx_tx_prodidx);
1008         bnx_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
1009
1010         return(0);
1011 }
1012
1013 static void
1014 bnx_setmulti(struct bnx_softc *sc)
1015 {
1016         struct ifnet *ifp;
1017         struct ifmultiaddr *ifma;
1018         uint32_t hashes[4] = { 0, 0, 0, 0 };
1019         int h, i;
1020
1021         ifp = &sc->arpcom.ac_if;
1022
1023         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
1024                 for (i = 0; i < 4; i++)
1025                         CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0xFFFFFFFF);
1026                 return;
1027         }
1028
1029         /* First, zot all the existing filters. */
1030         for (i = 0; i < 4; i++)
1031                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0);
1032
1033         /* Now program new ones. */
1034         TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1035                 if (ifma->ifma_addr->sa_family != AF_LINK)
1036                         continue;
1037                 h = ether_crc32_le(
1038                     LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1039                     ETHER_ADDR_LEN) & 0x7f;
1040                 hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F);
1041         }
1042
1043         for (i = 0; i < 4; i++)
1044                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]);
1045 }
1046
1047 /*
1048  * Do endian, PCI and DMA initialization. Also check the on-board ROM
1049  * self-test results.
1050  */
1051 static int
1052 bnx_chipinit(struct bnx_softc *sc)
1053 {
1054         uint32_t dma_rw_ctl, mode_ctl;
1055         int i;
1056
1057         /* Set endian type before we access any non-PCI registers. */
1058         pci_write_config(sc->bnx_dev, BGE_PCI_MISC_CTL,
1059             BGE_INIT | BGE_PCIMISCCTL_TAGGED_STATUS, 4);
1060
1061         /* Clear the MAC control register */
1062         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
1063
1064         /*
1065          * Clear the MAC statistics block in the NIC's
1066          * internal memory.
1067          */
1068         for (i = BGE_STATS_BLOCK;
1069             i < BGE_STATS_BLOCK_END + 1; i += sizeof(uint32_t))
1070                 BNX_MEMWIN_WRITE(sc, i, 0);
1071
1072         for (i = BGE_STATUS_BLOCK;
1073             i < BGE_STATUS_BLOCK_END + 1; i += sizeof(uint32_t))
1074                 BNX_MEMWIN_WRITE(sc, i, 0);
1075
1076         if (BNX_IS_57765_FAMILY(sc)) {
1077                 uint32_t val;
1078
1079                 if (sc->bnx_chipid == BGE_CHIPID_BCM57765_A0) {
1080                         mode_ctl = CSR_READ_4(sc, BGE_MODE_CTL);
1081                         val = mode_ctl & ~BGE_MODECTL_PCIE_PORTS;
1082
1083                         /* Access the lower 1K of PL PCI-E block registers. */
1084                         CSR_WRITE_4(sc, BGE_MODE_CTL,
1085                             val | BGE_MODECTL_PCIE_PL_SEL);
1086
1087                         val = CSR_READ_4(sc, BGE_PCIE_PL_LO_PHYCTL5);
1088                         val |= BGE_PCIE_PL_LO_PHYCTL5_DIS_L2CLKREQ;
1089                         CSR_WRITE_4(sc, BGE_PCIE_PL_LO_PHYCTL5, val);
1090
1091                         CSR_WRITE_4(sc, BGE_MODE_CTL, mode_ctl);
1092                 }
1093                 if (sc->bnx_chiprev != BGE_CHIPREV_57765_AX) {
1094                         mode_ctl = CSR_READ_4(sc, BGE_MODE_CTL);
1095                         val = mode_ctl & ~BGE_MODECTL_PCIE_PORTS;
1096
1097                         /* Access the lower 1K of DL PCI-E block registers. */
1098                         CSR_WRITE_4(sc, BGE_MODE_CTL,
1099                             val | BGE_MODECTL_PCIE_DL_SEL);
1100
1101                         val = CSR_READ_4(sc, BGE_PCIE_DL_LO_FTSMAX);
1102                         val &= ~BGE_PCIE_DL_LO_FTSMAX_MASK;
1103                         val |= BGE_PCIE_DL_LO_FTSMAX_VAL;
1104                         CSR_WRITE_4(sc, BGE_PCIE_DL_LO_FTSMAX, val);
1105
1106                         CSR_WRITE_4(sc, BGE_MODE_CTL, mode_ctl);
1107                 }
1108
1109                 val = CSR_READ_4(sc, BGE_CPMU_LSPD_10MB_CLK);
1110                 val &= ~BGE_CPMU_LSPD_10MB_MACCLK_MASK;
1111                 val |= BGE_CPMU_LSPD_10MB_MACCLK_6_25;
1112                 CSR_WRITE_4(sc, BGE_CPMU_LSPD_10MB_CLK, val);
1113         }
1114
1115         /*
1116          * Set up the PCI DMA control register.
1117          */
1118         dma_rw_ctl = pci_read_config(sc->bnx_dev, BGE_PCI_DMA_RW_CTL, 4);
1119         /*
1120          * Disable 32bytes cache alignment for DMA write to host memory
1121          *
1122          * NOTE:
1123          * 64bytes cache alignment for DMA write to host memory is still
1124          * enabled.
1125          */
1126         dma_rw_ctl |= BGE_PCIDMARWCTL_DIS_CACHE_ALIGNMENT;
1127         if (sc->bnx_chipid == BGE_CHIPID_BCM57765_A0)
1128                 dma_rw_ctl &= ~BGE_PCIDMARWCTL_CRDRDR_RDMA_MRRS_MSK;
1129         /*
1130          * Enable HW workaround for controllers that misinterpret
1131          * a status tag update and leave interrupts permanently
1132          * disabled.
1133          */
1134         if (sc->bnx_asicrev != BGE_ASICREV_BCM5717 &&
1135             !BNX_IS_57765_FAMILY(sc))
1136                 dma_rw_ctl |= BGE_PCIDMARWCTL_TAGGED_STATUS_WA;
1137         if (bootverbose) {
1138                 if_printf(&sc->arpcom.ac_if, "DMA read/write %#x\n",
1139                     dma_rw_ctl);
1140         }
1141         pci_write_config(sc->bnx_dev, BGE_PCI_DMA_RW_CTL, dma_rw_ctl, 4);
1142
1143         /*
1144          * Set up general mode register.
1145          */
1146         mode_ctl = bnx_dma_swap_options(sc) | BGE_MODECTL_MAC_ATTN_INTR |
1147             BGE_MODECTL_HOST_SEND_BDS | BGE_MODECTL_TX_NO_PHDR_CSUM;
1148         CSR_WRITE_4(sc, BGE_MODE_CTL, mode_ctl);
1149
1150         /*
1151          * Disable memory write invalidate.  Apparently it is not supported
1152          * properly by these devices.  Also ensure that INTx isn't disabled,
1153          * as these chips need it even when using MSI.
1154          */
1155         PCI_CLRBIT(sc->bnx_dev, BGE_PCI_CMD,
1156             (PCIM_CMD_MWRICEN | PCIM_CMD_INTxDIS), 4);
1157
1158         /* Set the timer prescaler (always 66Mhz) */
1159         CSR_WRITE_4(sc, BGE_MISC_CFG, 65 << 1/*BGE_32BITTIME_66MHZ*/);
1160
1161         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
1162                 DELAY(40);      /* XXX */
1163
1164                 /* Put PHY into ready state */
1165                 BNX_CLRBIT(sc, BGE_MISC_CFG, BGE_MISCCFG_EPHY_IDDQ);
1166                 CSR_READ_4(sc, BGE_MISC_CFG); /* Flush */
1167                 DELAY(40);
1168         }
1169
1170         return(0);
1171 }
1172
1173 static int
1174 bnx_blockinit(struct bnx_softc *sc)
1175 {
1176         struct bge_rcb *rcb;
1177         bus_size_t vrcb;
1178         bge_hostaddr taddr;
1179         uint32_t val;
1180         int i, limit;
1181
1182         /*
1183          * Initialize the memory window pointer register so that
1184          * we can access the first 32K of internal NIC RAM. This will
1185          * allow us to set up the TX send ring RCBs and the RX return
1186          * ring RCBs, plus other things which live in NIC memory.
1187          */
1188         CSR_WRITE_4(sc, BGE_PCI_MEMWIN_BASEADDR, 0);
1189
1190         /* Configure mbuf pool watermarks */
1191         if (BNX_IS_57765_PLUS(sc)) {
1192                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1193                 if (sc->arpcom.ac_if.if_mtu > ETHERMTU) {
1194                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x7e);
1195                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0xea);
1196                 } else {
1197                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x2a);
1198                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0xa0);
1199                 }
1200         } else if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
1201                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1202                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x04);
1203                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x10);
1204         } else {
1205                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1206                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10);
1207                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
1208         }
1209
1210         /* Configure DMA resource watermarks */
1211         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5);
1212         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10);
1213
1214         /* Enable buffer manager */
1215         val = BGE_BMANMODE_ENABLE | BGE_BMANMODE_LOMBUF_ATTN;
1216         /*
1217          * Change the arbitration algorithm of TXMBUF read request to
1218          * round-robin instead of priority based for BCM5719.  When
1219          * TXFIFO is almost empty, RDMA will hold its request until
1220          * TXFIFO is not almost empty.
1221          */
1222         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719)
1223                 val |= BGE_BMANMODE_NO_TX_UNDERRUN;
1224         if (sc->bnx_asicrev == BGE_ASICREV_BCM5717 ||
1225             sc->bnx_chipid == BGE_CHIPID_BCM5719_A0 ||
1226             sc->bnx_chipid == BGE_CHIPID_BCM5720_A0)
1227                 val |= BGE_BMANMODE_LOMBUF_ATTN;
1228         CSR_WRITE_4(sc, BGE_BMAN_MODE, val);
1229
1230         /* Poll for buffer manager start indication */
1231         for (i = 0; i < BNX_TIMEOUT; i++) {
1232                 if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE)
1233                         break;
1234                 DELAY(10);
1235         }
1236
1237         if (i == BNX_TIMEOUT) {
1238                 if_printf(&sc->arpcom.ac_if,
1239                           "buffer manager failed to start\n");
1240                 return(ENXIO);
1241         }
1242
1243         /* Enable flow-through queues */
1244         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
1245         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
1246
1247         /* Wait until queue initialization is complete */
1248         for (i = 0; i < BNX_TIMEOUT; i++) {
1249                 if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0)
1250                         break;
1251                 DELAY(10);
1252         }
1253
1254         if (i == BNX_TIMEOUT) {
1255                 if_printf(&sc->arpcom.ac_if,
1256                           "flow-through queue init failed\n");
1257                 return(ENXIO);
1258         }
1259
1260         /*
1261          * Summary of rings supported by the controller:
1262          *
1263          * Standard Receive Producer Ring
1264          * - This ring is used to feed receive buffers for "standard"
1265          *   sized frames (typically 1536 bytes) to the controller.
1266          *
1267          * Jumbo Receive Producer Ring
1268          * - This ring is used to feed receive buffers for jumbo sized
1269          *   frames (i.e. anything bigger than the "standard" frames)
1270          *   to the controller.
1271          *
1272          * Mini Receive Producer Ring
1273          * - This ring is used to feed receive buffers for "mini"
1274          *   sized frames to the controller.
1275          * - This feature required external memory for the controller
1276          *   but was never used in a production system.  Should always
1277          *   be disabled.
1278          *
1279          * Receive Return Ring
1280          * - After the controller has placed an incoming frame into a
1281          *   receive buffer that buffer is moved into a receive return
1282          *   ring.  The driver is then responsible to passing the
1283          *   buffer up to the stack.  Many versions of the controller
1284          *   support multiple RR rings.
1285          *
1286          * Send Ring
1287          * - This ring is used for outgoing frames.  Many versions of
1288          *   the controller support multiple send rings.
1289          */
1290
1291         /* Initialize the standard receive producer ring control block. */
1292         rcb = &sc->bnx_ldata.bnx_info.bnx_std_rx_rcb;
1293         rcb->bge_hostaddr.bge_addr_lo =
1294             BGE_ADDR_LO(sc->bnx_ldata.bnx_rx_std_ring_paddr);
1295         rcb->bge_hostaddr.bge_addr_hi =
1296             BGE_ADDR_HI(sc->bnx_ldata.bnx_rx_std_ring_paddr);
1297         if (BNX_IS_57765_PLUS(sc)) {
1298                 /*
1299                  * Bits 31-16: Programmable ring size (2048, 1024, 512, .., 32)
1300                  * Bits 15-2 : Maximum RX frame size
1301                  * Bit 1     : 1 = Ring Disabled, 0 = Ring ENabled
1302                  * Bit 0     : Reserved
1303                  */
1304                 rcb->bge_maxlen_flags =
1305                     BGE_RCB_MAXLEN_FLAGS(512, BNX_MAX_FRAMELEN << 2);
1306         } else {
1307                 /*
1308                  * Bits 31-16: Programmable ring size (512, 256, 128, 64, 32)
1309                  * Bits 15-2 : Reserved (should be 0)
1310                  * Bit 1     : 1 = Ring Disabled, 0 = Ring Enabled
1311                  * Bit 0     : Reserved
1312                  */
1313                 rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0);
1314         }
1315         if (BNX_IS_5717_PLUS(sc))
1316                 rcb->bge_nicaddr = BGE_STD_RX_RINGS_5717;
1317         else
1318                 rcb->bge_nicaddr = BGE_STD_RX_RINGS;
1319         /* Write the standard receive producer ring control block. */
1320         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi);
1321         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo);
1322         CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
1323         CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr);
1324         /* Reset the standard receive producer ring producer index. */
1325         bnx_writembx(sc, BGE_MBX_RX_STD_PROD_LO, 0);
1326
1327         /*
1328          * Initialize the jumbo RX producer ring control
1329          * block.  We set the 'ring disabled' bit in the
1330          * flags field until we're actually ready to start
1331          * using this ring (i.e. once we set the MTU
1332          * high enough to require it).
1333          */
1334         if (BNX_IS_JUMBO_CAPABLE(sc)) {
1335                 rcb = &sc->bnx_ldata.bnx_info.bnx_jumbo_rx_rcb;
1336                 /* Get the jumbo receive producer ring RCB parameters. */
1337                 rcb->bge_hostaddr.bge_addr_lo =
1338                     BGE_ADDR_LO(sc->bnx_ldata.bnx_rx_jumbo_ring_paddr);
1339                 rcb->bge_hostaddr.bge_addr_hi =
1340                     BGE_ADDR_HI(sc->bnx_ldata.bnx_rx_jumbo_ring_paddr);
1341                 rcb->bge_maxlen_flags =
1342                     BGE_RCB_MAXLEN_FLAGS(BNX_MAX_FRAMELEN,
1343                     BGE_RCB_FLAG_RING_DISABLED);
1344                 if (BNX_IS_5717_PLUS(sc))
1345                         rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS_5717;
1346                 else
1347                         rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS;
1348                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI,
1349                     rcb->bge_hostaddr.bge_addr_hi);
1350                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO,
1351                     rcb->bge_hostaddr.bge_addr_lo);
1352                 /* Program the jumbo receive producer ring RCB parameters. */
1353                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS,
1354                     rcb->bge_maxlen_flags);
1355                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr);
1356                 /* Reset the jumbo receive producer ring producer index. */
1357                 bnx_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0);
1358         }
1359
1360         /* Choose de-pipeline mode for BCM5906 A0, A1 and A2. */
1361         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
1362             (sc->bnx_chipid == BGE_CHIPID_BCM5906_A0 ||
1363              sc->bnx_chipid == BGE_CHIPID_BCM5906_A1 ||
1364              sc->bnx_chipid == BGE_CHIPID_BCM5906_A2)) {
1365                 CSR_WRITE_4(sc, BGE_ISO_PKT_TX,
1366                     (CSR_READ_4(sc, BGE_ISO_PKT_TX) & ~3) | 2);
1367         }
1368
1369         /*
1370          * The BD ring replenish thresholds control how often the
1371          * hardware fetches new BD's from the producer rings in host
1372          * memory.  Setting the value too low on a busy system can
1373          * starve the hardware and recue the throughpout.
1374          *
1375          * Set the BD ring replentish thresholds. The recommended
1376          * values are 1/8th the number of descriptors allocated to
1377          * each ring.
1378          */
1379         val = 8;
1380         CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, val);
1381         if (BNX_IS_JUMBO_CAPABLE(sc)) {
1382                 CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH,
1383                     BGE_JUMBO_RX_RING_CNT/8);
1384         }
1385         if (BNX_IS_57765_PLUS(sc)) {
1386                 CSR_WRITE_4(sc, BGE_STD_REPLENISH_LWM, 32);
1387                 CSR_WRITE_4(sc, BGE_JMB_REPLENISH_LWM, 16);
1388         }
1389
1390         /*
1391          * Disable all send rings by setting the 'ring disabled' bit
1392          * in the flags field of all the TX send ring control blocks,
1393          * located in NIC memory.
1394          */
1395         if (BNX_IS_5717_PLUS(sc))
1396                 limit = 4;
1397         else if (BNX_IS_57765_FAMILY(sc))
1398                 limit = 2;
1399         else
1400                 limit = 1;
1401         vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
1402         for (i = 0; i < limit; i++) {
1403                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1404                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED));
1405                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1406                 vrcb += sizeof(struct bge_rcb);
1407         }
1408
1409         /* Configure send ring RCB 0 (we use only the first ring) */
1410         vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
1411         BGE_HOSTADDR(taddr, sc->bnx_ldata.bnx_tx_ring_paddr);
1412         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
1413         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
1414         if (BNX_IS_5717_PLUS(sc)) {
1415                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, BGE_SEND_RING_5717);
1416         } else {
1417                 RCB_WRITE_4(sc, vrcb, bge_nicaddr,
1418                     BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT));
1419         }
1420         RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1421             BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0));
1422
1423         /*
1424          * Disable all receive return rings by setting the
1425          * 'ring disabled' bit in the flags field of all the receive
1426          * return ring control blocks, located in NIC memory.
1427          */
1428         if (BNX_IS_5717_PLUS(sc)) {
1429                 /* Should be 17, use 16 until we get an SRAM map. */
1430                 limit = 16;
1431         } else if (BNX_IS_57765_FAMILY(sc)) {
1432                 limit = 4;
1433         } else {
1434                 limit = 1;
1435         }
1436         /* Disable all receive return rings. */
1437         vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
1438         for (i = 0; i < limit; i++) {
1439                 RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, 0);
1440                 RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, 0);
1441                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1442                     BGE_RCB_FLAG_RING_DISABLED);
1443                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1444                 bnx_writembx(sc, BGE_MBX_RX_CONS0_LO +
1445                     (i * (sizeof(uint64_t))), 0);
1446                 vrcb += sizeof(struct bge_rcb);
1447         }
1448
1449         /*
1450          * Set up receive return ring 0.  Note that the NIC address
1451          * for RX return rings is 0x0.  The return rings live entirely
1452          * within the host, so the nicaddr field in the RCB isn't used.
1453          */
1454         vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
1455         BGE_HOSTADDR(taddr, sc->bnx_ldata.bnx_rx_return_ring_paddr);
1456         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
1457         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
1458         RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1459         RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1460             BGE_RCB_MAXLEN_FLAGS(sc->bnx_return_ring_cnt, 0));
1461
1462         /* Set random backoff seed for TX */
1463         CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
1464             sc->arpcom.ac_enaddr[0] + sc->arpcom.ac_enaddr[1] +
1465             sc->arpcom.ac_enaddr[2] + sc->arpcom.ac_enaddr[3] +
1466             sc->arpcom.ac_enaddr[4] + sc->arpcom.ac_enaddr[5] +
1467             BGE_TX_BACKOFF_SEED_MASK);
1468
1469         /* Set inter-packet gap */
1470         val = 0x2620;
1471         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1472                 val |= CSR_READ_4(sc, BGE_TX_LENGTHS) &
1473                     (BGE_TXLEN_JMB_FRM_LEN_MSK | BGE_TXLEN_CNT_DN_VAL_MSK);
1474         }
1475         CSR_WRITE_4(sc, BGE_TX_LENGTHS, val);
1476
1477         /*
1478          * Specify which ring to use for packets that don't match
1479          * any RX rules.
1480          */
1481         CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08);
1482
1483         /*
1484          * Configure number of RX lists. One interrupt distribution
1485          * list, sixteen active lists, one bad frames class.
1486          */
1487         CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181);
1488
1489         /* Inialize RX list placement stats mask. */
1490         CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF);
1491         CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1);
1492
1493         /* Disable host coalescing until we get it set up */
1494         CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000);
1495
1496         /* Poll to make sure it's shut down. */
1497         for (i = 0; i < BNX_TIMEOUT; i++) {
1498                 if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE))
1499                         break;
1500                 DELAY(10);
1501         }
1502
1503         if (i == BNX_TIMEOUT) {
1504                 if_printf(&sc->arpcom.ac_if,
1505                           "host coalescing engine failed to idle\n");
1506                 return(ENXIO);
1507         }
1508
1509         /* Set up host coalescing defaults */
1510         CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bnx_rx_coal_ticks);
1511         CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bnx_tx_coal_ticks);
1512         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bnx_rx_coal_bds);
1513         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bnx_tx_coal_bds);
1514         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, sc->bnx_rx_coal_bds_int);
1515         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, sc->bnx_tx_coal_bds_int);
1516
1517         /* Set up address of status block */
1518         bzero(sc->bnx_ldata.bnx_status_block, BGE_STATUS_BLK_SZ);
1519         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI,
1520             BGE_ADDR_HI(sc->bnx_ldata.bnx_status_block_paddr));
1521         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO,
1522             BGE_ADDR_LO(sc->bnx_ldata.bnx_status_block_paddr));
1523
1524         /* Set up status block partail update size. */
1525         val = BGE_STATBLKSZ_32BYTE;
1526 #if 0
1527         /*
1528          * Does not seem to have visible effect in both
1529          * bulk data (1472B UDP datagram) and tiny data
1530          * (18B UDP datagram) TX tests.
1531          */
1532         val |= BGE_HCCMODE_CLRTICK_TX;
1533 #endif
1534         /* Turn on host coalescing state machine */
1535         CSR_WRITE_4(sc, BGE_HCC_MODE, val | BGE_HCCMODE_ENABLE);
1536
1537         /* Turn on RX BD completion state machine and enable attentions */
1538         CSR_WRITE_4(sc, BGE_RBDC_MODE,
1539             BGE_RBDCMODE_ENABLE|BGE_RBDCMODE_ATTN);
1540
1541         /* Turn on RX list placement state machine */
1542         CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
1543
1544         val = BGE_MACMODE_TXDMA_ENB | BGE_MACMODE_RXDMA_ENB |
1545             BGE_MACMODE_RX_STATS_CLEAR | BGE_MACMODE_TX_STATS_CLEAR |
1546             BGE_MACMODE_RX_STATS_ENB | BGE_MACMODE_TX_STATS_ENB |
1547             BGE_MACMODE_FRMHDR_DMA_ENB;
1548
1549         if (sc->bnx_flags & BNX_FLAG_TBI)
1550                 val |= BGE_PORTMODE_TBI;
1551         else if (sc->bnx_flags & BNX_FLAG_MII_SERDES)
1552                 val |= BGE_PORTMODE_GMII;
1553         else
1554                 val |= BGE_PORTMODE_MII;
1555
1556         /* Turn on DMA, clear stats */
1557         CSR_WRITE_4(sc, BGE_MAC_MODE, val);
1558
1559         /* Set misc. local control, enable interrupts on attentions */
1560         CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_ONATTN);
1561
1562 #ifdef notdef
1563         /* Assert GPIO pins for PHY reset */
1564         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0|
1565             BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUT2);
1566         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0|
1567             BGE_MLC_MISCIO_OUTEN1|BGE_MLC_MISCIO_OUTEN2);
1568 #endif
1569
1570         /* Turn on write DMA state machine */
1571         val = BGE_WDMAMODE_ENABLE|BGE_WDMAMODE_ALL_ATTNS;
1572         /* Enable host coalescing bug fix. */
1573         val |= BGE_WDMAMODE_STATUS_TAG_FIX;
1574         if (sc->bnx_asicrev == BGE_ASICREV_BCM5785) {
1575                 /* Request larger DMA burst size to get better performance. */
1576                 val |= BGE_WDMAMODE_BURST_ALL_DATA;
1577         }
1578         CSR_WRITE_4(sc, BGE_WDMA_MODE, val);
1579         DELAY(40);
1580
1581         if (BNX_IS_57765_PLUS(sc)) {
1582                 uint32_t dmactl;
1583
1584                 dmactl = CSR_READ_4(sc, BGE_RDMA_RSRVCTRL);
1585                 /*
1586                  * Adjust tx margin to prevent TX data corruption and
1587                  * fix internal FIFO overflow.
1588                  */
1589                 if (sc->bnx_asicrev == BGE_ASICREV_BCM5719 ||
1590                     sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1591                         dmactl &= ~(BGE_RDMA_RSRVCTRL_FIFO_LWM_MASK |
1592                             BGE_RDMA_RSRVCTRL_FIFO_HWM_MASK |
1593                             BGE_RDMA_RSRVCTRL_TXMRGN_MASK);
1594                         dmactl |= BGE_RDMA_RSRVCTRL_FIFO_LWM_1_5K |
1595                             BGE_RDMA_RSRVCTRL_FIFO_HWM_1_5K |
1596                             BGE_RDMA_RSRVCTRL_TXMRGN_320B;
1597                 }
1598                 /*
1599                  * Enable fix for read DMA FIFO overruns.
1600                  * The fix is to limit the number of RX BDs
1601                  * the hardware would fetch at a fime.
1602                  */
1603                 CSR_WRITE_4(sc, BGE_RDMA_RSRVCTRL,
1604                     dmactl | BGE_RDMA_RSRVCTRL_FIFO_OFLW_FIX);
1605         }
1606
1607         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719) {
1608                 CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL,
1609                     CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL) |
1610                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_4K |
1611                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K);
1612         } else if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1613                 /*
1614                  * Allow 4KB burst length reads for non-LSO frames.
1615                  * Enable 512B burst length reads for buffer descriptors.
1616                  */
1617                 CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL,
1618                     CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL) |
1619                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_512 |
1620                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K);
1621         }
1622
1623         /* Turn on read DMA state machine */
1624         val = BGE_RDMAMODE_ENABLE | BGE_RDMAMODE_ALL_ATTNS;
1625         if (sc->bnx_asicrev == BGE_ASICREV_BCM5717)
1626                 val |= BGE_RDMAMODE_MULT_DMA_RD_DIS;
1627         if (sc->bnx_asicrev == BGE_ASICREV_BCM5784 ||
1628             sc->bnx_asicrev == BGE_ASICREV_BCM5785 ||
1629             sc->bnx_asicrev == BGE_ASICREV_BCM57780) {
1630                 val |= BGE_RDMAMODE_BD_SBD_CRPT_ATTN |
1631                     BGE_RDMAMODE_MBUF_RBD_CRPT_ATTN |
1632                     BGE_RDMAMODE_MBUF_SBD_CRPT_ATTN;
1633         }
1634         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1635                 val |= CSR_READ_4(sc, BGE_RDMA_MODE) &
1636                     BGE_RDMAMODE_H2BNC_VLAN_DET;
1637                 /*
1638                  * Allow multiple outstanding read requests from
1639                  * non-LSO read DMA engine.
1640                  */
1641                 val &= ~BGE_RDMAMODE_MULT_DMA_RD_DIS;
1642         }
1643         if (sc->bnx_flags & BNX_FLAG_TSO)
1644                 val |= BGE_RDMAMODE_TSO4_ENABLE;
1645         val |= BGE_RDMAMODE_FIFO_LONG_BURST;
1646         CSR_WRITE_4(sc, BGE_RDMA_MODE, val);
1647         DELAY(40);
1648
1649         /* Turn on RX data completion state machine */
1650         CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
1651
1652         /* Turn on RX BD initiator state machine */
1653         CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
1654
1655         /* Turn on RX data and RX BD initiator state machine */
1656         CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE);
1657
1658         /* Turn on send BD completion state machine */
1659         CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
1660
1661         /* Turn on send data completion state machine */
1662         val = BGE_SDCMODE_ENABLE;
1663         if (sc->bnx_asicrev == BGE_ASICREV_BCM5761)
1664                 val |= BGE_SDCMODE_CDELAY;
1665         CSR_WRITE_4(sc, BGE_SDC_MODE, val);
1666
1667         /* Turn on send data initiator state machine */
1668         if (sc->bnx_flags & BNX_FLAG_TSO) {
1669                 CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE |
1670                     BGE_SDIMODE_HW_LSO_PRE_DMA);
1671         } else {
1672                 CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
1673         }
1674
1675         /* Turn on send BD initiator state machine */
1676         CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
1677
1678         /* Turn on send BD selector state machine */
1679         CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
1680
1681         CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF);
1682         CSR_WRITE_4(sc, BGE_SDI_STATS_CTL,
1683             BGE_SDISTATSCTL_ENABLE|BGE_SDISTATSCTL_FASTER);
1684
1685         /* ack/clear link change events */
1686         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1687             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1688             BGE_MACSTAT_LINK_CHANGED);
1689         CSR_WRITE_4(sc, BGE_MI_STS, 0);
1690
1691         /*
1692          * Enable attention when the link has changed state for
1693          * devices that use auto polling.
1694          */
1695         if (sc->bnx_flags & BNX_FLAG_TBI) {
1696                 CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK);
1697         } else {
1698                 if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
1699                         CSR_WRITE_4(sc, BGE_MI_MODE, sc->bnx_mi_mode);
1700                         DELAY(80);
1701                 }
1702         }
1703
1704         /*
1705          * Clear any pending link state attention.
1706          * Otherwise some link state change events may be lost until attention
1707          * is cleared by bnx_intr() -> bnx_softc.bnx_link_upd() sequence.
1708          * It's not necessary on newer BCM chips - perhaps enabling link
1709          * state change attentions implies clearing pending attention.
1710          */
1711         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1712             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1713             BGE_MACSTAT_LINK_CHANGED);
1714
1715         /* Enable link state change attentions. */
1716         BNX_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED);
1717
1718         return(0);
1719 }
1720
1721 /*
1722  * Probe for a Broadcom chip. Check the PCI vendor and device IDs
1723  * against our list and return its name if we find a match. Note
1724  * that since the Broadcom controller contains VPD support, we
1725  * can get the device name string from the controller itself instead
1726  * of the compiled-in string. This is a little slow, but it guarantees
1727  * we'll always announce the right product name.
1728  */
1729 static int
1730 bnx_probe(device_t dev)
1731 {
1732         const struct bnx_type *t;
1733         uint16_t product, vendor;
1734
1735         if (!pci_is_pcie(dev))
1736                 return ENXIO;
1737
1738         product = pci_get_device(dev);
1739         vendor = pci_get_vendor(dev);
1740
1741         for (t = bnx_devs; t->bnx_name != NULL; t++) {
1742                 if (vendor == t->bnx_vid && product == t->bnx_did)
1743                         break;
1744         }
1745         if (t->bnx_name == NULL)
1746                 return ENXIO;
1747
1748         device_set_desc(dev, t->bnx_name);
1749         return 0;
1750 }
1751
1752 static int
1753 bnx_attach(device_t dev)
1754 {
1755         struct ifnet *ifp;
1756         struct bnx_softc *sc;
1757         uint32_t hwcfg = 0, misccfg;
1758         int error = 0, rid, capmask;
1759         uint8_t ether_addr[ETHER_ADDR_LEN];
1760         uint16_t product, vendor;
1761         driver_intr_t *intr_func;
1762         uintptr_t mii_priv = 0;
1763         u_int intr_flags;
1764 #ifdef BNX_TSO_DEBUG
1765         char desc[32];
1766         int i;
1767 #endif
1768
1769         sc = device_get_softc(dev);
1770         sc->bnx_dev = dev;
1771         callout_init_mp(&sc->bnx_stat_timer);
1772         callout_init_mp(&sc->bnx_intr_timer);
1773         lwkt_serialize_init(&sc->bnx_jslot_serializer);
1774
1775         product = pci_get_device(dev);
1776         vendor = pci_get_vendor(dev);
1777
1778 #ifndef BURN_BRIDGES
1779         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
1780                 uint32_t irq, mem;
1781
1782                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
1783                 mem = pci_read_config(dev, BGE_PCI_BAR0, 4);
1784
1785                 device_printf(dev, "chip is in D%d power mode "
1786                     "-- setting to D0\n", pci_get_powerstate(dev));
1787
1788                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
1789
1790                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
1791                 pci_write_config(dev, BGE_PCI_BAR0, mem, 4);
1792         }
1793 #endif  /* !BURN_BRIDGE */
1794
1795         /*
1796          * Map control/status registers.
1797          */
1798         pci_enable_busmaster(dev);
1799
1800         rid = BGE_PCI_BAR0;
1801         sc->bnx_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1802             RF_ACTIVE);
1803
1804         if (sc->bnx_res == NULL) {
1805                 device_printf(dev, "couldn't map memory\n");
1806                 return ENXIO;
1807         }
1808
1809         sc->bnx_btag = rman_get_bustag(sc->bnx_res);
1810         sc->bnx_bhandle = rman_get_bushandle(sc->bnx_res);
1811
1812         /* Save various chip information */
1813         sc->bnx_chipid =
1814             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) >>
1815             BGE_PCIMISCCTL_ASICREV_SHIFT;
1816         if (BGE_ASICREV(sc->bnx_chipid) == BGE_ASICREV_USE_PRODID_REG) {
1817                 /* All chips having dedicated ASICREV register have CPMU */
1818                 sc->bnx_flags |= BNX_FLAG_CPMU;
1819
1820                 switch (product) {
1821                 case PCI_PRODUCT_BROADCOM_BCM5717:
1822                 case PCI_PRODUCT_BROADCOM_BCM5718:
1823                 case PCI_PRODUCT_BROADCOM_BCM5719:
1824                 case PCI_PRODUCT_BROADCOM_BCM5720_ALT:
1825                         sc->bnx_chipid = pci_read_config(dev,
1826                             BGE_PCI_GEN2_PRODID_ASICREV, 4);
1827                         break;
1828
1829                 case PCI_PRODUCT_BROADCOM_BCM57761:
1830                 case PCI_PRODUCT_BROADCOM_BCM57762:
1831                 case PCI_PRODUCT_BROADCOM_BCM57765:
1832                 case PCI_PRODUCT_BROADCOM_BCM57766:
1833                 case PCI_PRODUCT_BROADCOM_BCM57781:
1834                 case PCI_PRODUCT_BROADCOM_BCM57782:
1835                 case PCI_PRODUCT_BROADCOM_BCM57785:
1836                 case PCI_PRODUCT_BROADCOM_BCM57786:
1837                 case PCI_PRODUCT_BROADCOM_BCM57791:
1838                 case PCI_PRODUCT_BROADCOM_BCM57795:
1839                         sc->bnx_chipid = pci_read_config(dev,
1840                             BGE_PCI_GEN15_PRODID_ASICREV, 4);
1841                         break;
1842
1843                 default:
1844                         sc->bnx_chipid = pci_read_config(dev,
1845                             BGE_PCI_PRODID_ASICREV, 4);
1846                         break;
1847                 }
1848         }
1849         sc->bnx_asicrev = BGE_ASICREV(sc->bnx_chipid);
1850         sc->bnx_chiprev = BGE_CHIPREV(sc->bnx_chipid);
1851
1852         switch (sc->bnx_asicrev) {
1853         case BGE_ASICREV_BCM5717:
1854         case BGE_ASICREV_BCM5719:
1855         case BGE_ASICREV_BCM5720:
1856                 sc->bnx_flags |= BNX_FLAG_5717_PLUS | BNX_FLAG_57765_PLUS;
1857                 break;
1858
1859         case BGE_ASICREV_BCM57765:
1860         case BGE_ASICREV_BCM57766:
1861                 sc->bnx_flags |= BNX_FLAG_57765_FAMILY | BNX_FLAG_57765_PLUS;
1862                 break;
1863         }
1864         sc->bnx_flags |= BNX_FLAG_SHORTDMA;
1865
1866         sc->bnx_flags |= BNX_FLAG_TSO;
1867         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719 &&
1868             sc->bnx_chipid == BGE_CHIPID_BCM5719_A0)
1869                 sc->bnx_flags &= ~BNX_FLAG_TSO;
1870
1871         if (sc->bnx_asicrev == BGE_ASICREV_BCM5717 ||
1872             BNX_IS_57765_FAMILY(sc)) {
1873                 /*
1874                  * All BCM57785 and BCM5718 families chips have a bug that
1875                  * under certain situation interrupt will not be enabled
1876                  * even if status tag is written to BGE_MBX_IRQ0_LO mailbox.
1877                  *
1878                  * While BCM5719 and BCM5720 have a hardware workaround
1879                  * which could fix the above bug.
1880                  * See the comment near BGE_PCIDMARWCTL_TAGGED_STATUS_WA in
1881                  * bnx_chipinit().
1882                  *
1883                  * For the rest of the chips in these two families, we will
1884                  * have to poll the status block at high rate (10ms currently)
1885                  * to check whether the interrupt is hosed or not.
1886                  * See bnx_intr_check() for details.
1887                  */
1888                 sc->bnx_flags |= BNX_FLAG_STATUSTAG_BUG;
1889         }
1890
1891         misccfg = CSR_READ_4(sc, BGE_MISC_CFG) & BGE_MISCCFG_BOARD_ID_MASK;
1892
1893         sc->bnx_pciecap = pci_get_pciecap_ptr(sc->bnx_dev);
1894         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719 ||
1895             sc->bnx_asicrev == BGE_ASICREV_BCM5720)
1896                 pcie_set_max_readrq(dev, PCIEM_DEVCTL_MAX_READRQ_2048);
1897         else
1898                 pcie_set_max_readrq(dev, PCIEM_DEVCTL_MAX_READRQ_4096);
1899         device_printf(dev, "CHIP ID 0x%08x; "
1900                       "ASIC REV 0x%02x; CHIP REV 0x%02x\n",
1901                       sc->bnx_chipid, sc->bnx_asicrev, sc->bnx_chiprev);
1902
1903         /*
1904          * Set various PHY quirk flags.
1905          */
1906
1907         capmask = MII_CAPMASK_DEFAULT;
1908         if (product == PCI_PRODUCT_BROADCOM_BCM57791 ||
1909             product == PCI_PRODUCT_BROADCOM_BCM57795) {
1910                 /* 10/100 only */
1911                 capmask &= ~BMSR_EXTSTAT;
1912         }
1913
1914         mii_priv |= BRGPHY_FLAG_WIRESPEED;
1915
1916         /*
1917          * Allocate interrupt
1918          */
1919         sc->bnx_irq_type = pci_alloc_1intr(dev, bnx_msi_enable, &sc->bnx_irq_rid,
1920             &intr_flags);
1921
1922         sc->bnx_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->bnx_irq_rid,
1923             intr_flags);
1924         if (sc->bnx_irq == NULL) {
1925                 device_printf(dev, "couldn't map interrupt\n");
1926                 error = ENXIO;
1927                 goto fail;
1928         }
1929
1930         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI) {
1931                 sc->bnx_flags |= BNX_FLAG_ONESHOT_MSI;
1932                 bnx_enable_msi(sc);
1933         }
1934
1935         /* Initialize if_name earlier, so if_printf could be used */
1936         ifp = &sc->arpcom.ac_if;
1937         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1938
1939         /* Try to reset the chip. */
1940         bnx_reset(sc);
1941
1942         if (bnx_chipinit(sc)) {
1943                 device_printf(dev, "chip initialization failed\n");
1944                 error = ENXIO;
1945                 goto fail;
1946         }
1947
1948         /*
1949          * Get station address
1950          */
1951         error = bnx_get_eaddr(sc, ether_addr);
1952         if (error) {
1953                 device_printf(dev, "failed to read station address\n");
1954                 goto fail;
1955         }
1956
1957         if (BNX_IS_57765_PLUS(sc)) {
1958                 sc->bnx_return_ring_cnt = BGE_RETURN_RING_CNT;
1959         } else {
1960                 /* 5705/5750 limits RX return ring to 512 entries. */
1961                 sc->bnx_return_ring_cnt = BGE_RETURN_RING_CNT_5705;
1962         }
1963
1964         error = bnx_dma_alloc(sc);
1965         if (error)
1966                 goto fail;
1967
1968         /* Set default tuneable values. */
1969         sc->bnx_rx_coal_ticks = BNX_RX_COAL_TICKS_DEF;
1970         sc->bnx_tx_coal_ticks = BNX_TX_COAL_TICKS_DEF;
1971         sc->bnx_rx_coal_bds = BNX_RX_COAL_BDS_DEF;
1972         sc->bnx_tx_coal_bds = BNX_TX_COAL_BDS_DEF;
1973         sc->bnx_rx_coal_bds_int = BNX_RX_COAL_BDS_INT_DEF;
1974         sc->bnx_tx_coal_bds_int = BNX_TX_COAL_BDS_INT_DEF;
1975
1976         /* Set up ifnet structure */
1977         ifp->if_softc = sc;
1978         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1979         ifp->if_ioctl = bnx_ioctl;
1980         ifp->if_start = bnx_start;
1981 #ifdef IFPOLL_ENABLE
1982         ifp->if_npoll = bnx_npoll;
1983 #endif
1984         ifp->if_watchdog = bnx_watchdog;
1985         ifp->if_init = bnx_init;
1986         ifp->if_mtu = ETHERMTU;
1987         ifp->if_capabilities = IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
1988         ifq_set_maxlen(&ifp->if_snd, BGE_TX_RING_CNT - 1);
1989         ifq_set_ready(&ifp->if_snd);
1990
1991         ifp->if_capabilities |= IFCAP_HWCSUM;
1992         ifp->if_hwassist = BNX_CSUM_FEATURES;
1993         if (sc->bnx_flags & BNX_FLAG_TSO) {
1994                 ifp->if_capabilities |= IFCAP_TSO;
1995                 ifp->if_hwassist |= CSUM_TSO;
1996         }
1997         ifp->if_capenable = ifp->if_capabilities;
1998
1999         /*
2000          * Figure out what sort of media we have by checking the
2001          * hardware config word in the first 32k of NIC internal memory,
2002          * or fall back to examining the EEPROM if necessary.
2003          * Note: on some BCM5700 cards, this value appears to be unset.
2004          * If that's the case, we have to rely on identifying the NIC
2005          * by its PCI subsystem ID, as we do below for the SysKonnect
2006          * SK-9D41.
2007          */
2008         if (bnx_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER) {
2009                 hwcfg = bnx_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG);
2010         } else {
2011                 if (bnx_read_eeprom(sc, (caddr_t)&hwcfg, BGE_EE_HWCFG_OFFSET,
2012                                     sizeof(hwcfg))) {
2013                         device_printf(dev, "failed to read EEPROM\n");
2014                         error = ENXIO;
2015                         goto fail;
2016                 }
2017                 hwcfg = ntohl(hwcfg);
2018         }
2019
2020         /* The SysKonnect SK-9D41 is a 1000baseSX card. */
2021         if (pci_get_subvendor(dev) == PCI_PRODUCT_SCHNEIDERKOCH_SK_9D41 ||
2022             (hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER)
2023                 sc->bnx_flags |= BNX_FLAG_TBI;
2024
2025         /* Setup MI MODE */
2026         if (sc->bnx_flags & BNX_FLAG_CPMU)
2027                 sc->bnx_mi_mode = BGE_MIMODE_500KHZ_CONST;
2028         else
2029                 sc->bnx_mi_mode = BGE_MIMODE_BASE;
2030
2031         /* Setup link status update stuffs */
2032         if (sc->bnx_flags & BNX_FLAG_TBI) {
2033                 sc->bnx_link_upd = bnx_tbi_link_upd;
2034                 sc->bnx_link_chg = BGE_MACSTAT_LINK_CHANGED;
2035         } else if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
2036                 sc->bnx_link_upd = bnx_autopoll_link_upd;
2037                 sc->bnx_link_chg = BGE_MACSTAT_LINK_CHANGED;
2038         } else {
2039                 sc->bnx_link_upd = bnx_copper_link_upd;
2040                 sc->bnx_link_chg = BGE_MACSTAT_LINK_CHANGED;
2041         }
2042
2043         /* Set default PHY address */
2044         sc->bnx_phyno = 1;
2045
2046         /*
2047          * PHY address mapping for various devices.
2048          *
2049          *          | F0 Cu | F0 Sr | F1 Cu | F1 Sr |
2050          * ---------+-------+-------+-------+-------+
2051          * BCM57XX  |   1   |   X   |   X   |   X   |
2052          * BCM5704  |   1   |   X   |   1   |   X   |
2053          * BCM5717  |   1   |   8   |   2   |   9   |
2054          * BCM5719  |   1   |   8   |   2   |   9   |
2055          * BCM5720  |   1   |   8   |   2   |   9   |
2056          *
2057          * Other addresses may respond but they are not
2058          * IEEE compliant PHYs and should be ignored.
2059          */
2060         if (BNX_IS_5717_PLUS(sc)) {
2061                 int f;
2062
2063                 f = pci_get_function(dev);
2064                 if (sc->bnx_chipid == BGE_CHIPID_BCM5717_A0) {
2065                         if (CSR_READ_4(sc, BGE_SGDIG_STS) &
2066                             BGE_SGDIGSTS_IS_SERDES)
2067                                 sc->bnx_phyno = f + 8;
2068                         else
2069                                 sc->bnx_phyno = f + 1;
2070                 } else {
2071                         if (CSR_READ_4(sc, BGE_CPMU_PHY_STRAP) &
2072                             BGE_CPMU_PHY_STRAP_IS_SERDES)
2073                                 sc->bnx_phyno = f + 8;
2074                         else
2075                                 sc->bnx_phyno = f + 1;
2076                 }
2077         }
2078
2079         if (sc->bnx_flags & BNX_FLAG_TBI) {
2080                 ifmedia_init(&sc->bnx_ifmedia, IFM_IMASK,
2081                     bnx_ifmedia_upd, bnx_ifmedia_sts);
2082                 ifmedia_add(&sc->bnx_ifmedia, IFM_ETHER|IFM_1000_SX, 0, NULL);
2083                 ifmedia_add(&sc->bnx_ifmedia,
2084                     IFM_ETHER|IFM_1000_SX|IFM_FDX, 0, NULL);
2085                 ifmedia_add(&sc->bnx_ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
2086                 ifmedia_set(&sc->bnx_ifmedia, IFM_ETHER|IFM_AUTO);
2087                 sc->bnx_ifmedia.ifm_media = sc->bnx_ifmedia.ifm_cur->ifm_media;
2088         } else {
2089                 struct mii_probe_args mii_args;
2090
2091                 mii_probe_args_init(&mii_args, bnx_ifmedia_upd, bnx_ifmedia_sts);
2092                 mii_args.mii_probemask = 1 << sc->bnx_phyno;
2093                 mii_args.mii_capmask = capmask;
2094                 mii_args.mii_privtag = MII_PRIVTAG_BRGPHY;
2095                 mii_args.mii_priv = mii_priv;
2096
2097                 error = mii_probe(dev, &sc->bnx_miibus, &mii_args);
2098                 if (error) {
2099                         device_printf(dev, "MII without any PHY!\n");
2100                         goto fail;
2101                 }
2102         }
2103
2104 #ifdef IFPOLL_ENABLE
2105         sc->bnx_npoll_stfrac = 39;      /* 1/40 polling freq */
2106         sc->bnx_npoll_cpuid = device_get_unit(dev) % ncpus2;
2107 #endif
2108
2109         /*
2110          * Create sysctl nodes.
2111          */
2112         sysctl_ctx_init(&sc->bnx_sysctl_ctx);
2113         sc->bnx_sysctl_tree = SYSCTL_ADD_NODE(&sc->bnx_sysctl_ctx,
2114                                               SYSCTL_STATIC_CHILDREN(_hw),
2115                                               OID_AUTO,
2116                                               device_get_nameunit(dev),
2117                                               CTLFLAG_RD, 0, "");
2118         if (sc->bnx_sysctl_tree == NULL) {
2119                 device_printf(dev, "can't add sysctl node\n");
2120                 error = ENXIO;
2121                 goto fail;
2122         }
2123
2124         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2125                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2126                         OID_AUTO, "rx_coal_ticks",
2127                         CTLTYPE_INT | CTLFLAG_RW,
2128                         sc, 0, bnx_sysctl_rx_coal_ticks, "I",
2129                         "Receive coalescing ticks (usec).");
2130         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2131                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2132                         OID_AUTO, "tx_coal_ticks",
2133                         CTLTYPE_INT | CTLFLAG_RW,
2134                         sc, 0, bnx_sysctl_tx_coal_ticks, "I",
2135                         "Transmit coalescing ticks (usec).");
2136         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2137                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2138                         OID_AUTO, "rx_coal_bds",
2139                         CTLTYPE_INT | CTLFLAG_RW,
2140                         sc, 0, bnx_sysctl_rx_coal_bds, "I",
2141                         "Receive max coalesced BD count.");
2142         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2143                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2144                         OID_AUTO, "tx_coal_bds",
2145                         CTLTYPE_INT | CTLFLAG_RW,
2146                         sc, 0, bnx_sysctl_tx_coal_bds, "I",
2147                         "Transmit max coalesced BD count.");
2148         /*
2149          * A common design characteristic for many Broadcom
2150          * client controllers is that they only support a
2151          * single outstanding DMA read operation on the PCIe
2152          * bus. This means that it will take twice as long to
2153          * fetch a TX frame that is split into header and
2154          * payload buffers as it does to fetch a single,
2155          * contiguous TX frame (2 reads vs. 1 read). For these
2156          * controllers, coalescing buffers to reduce the number
2157          * of memory reads is effective way to get maximum
2158          * performance(about 940Mbps).  Without collapsing TX
2159          * buffers the maximum TCP bulk transfer performance
2160          * is about 850Mbps. However forcing coalescing mbufs
2161          * consumes a lot of CPU cycles, so leave it off by
2162          * default.
2163          */
2164         SYSCTL_ADD_INT(&sc->bnx_sysctl_ctx,
2165             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2166             "force_defrag", CTLFLAG_RW, &sc->bnx_force_defrag, 0,
2167             "Force defragment on TX path");
2168
2169 #ifdef IFPOLL_ENABLE
2170         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2171             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2172             "npoll_stfrac", CTLTYPE_INT | CTLFLAG_RW,
2173             sc, 0, bnx_sysctl_npoll_stfrac, "I", "polling status frac");
2174         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2175             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2176             "npoll_cpuid", CTLTYPE_INT | CTLFLAG_RW,
2177             sc, 0, bnx_sysctl_npoll_cpuid, "I", "polling cpuid");
2178 #endif
2179
2180         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2181             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2182             "rx_coal_bds_int", CTLTYPE_INT | CTLFLAG_RW,
2183             sc, 0, bnx_sysctl_rx_coal_bds_int, "I",
2184             "Receive max coalesced BD count during interrupt.");
2185         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2186             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2187             "tx_coal_bds_int", CTLTYPE_INT | CTLFLAG_RW,
2188             sc, 0, bnx_sysctl_tx_coal_bds_int, "I",
2189             "Transmit max coalesced BD count during interrupt.");
2190
2191 #ifdef BNX_TSO_DEBUG
2192         for (i = 0; i < BNX_TSO_NSTATS; ++i) {
2193                 ksnprintf(desc, sizeof(desc), "tso%d", i + 1);
2194                 SYSCTL_ADD_ULONG(&sc->bnx_sysctl_ctx,
2195                     SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2196                     desc, CTLFLAG_RW, &sc->bnx_tsosegs[i], "");
2197         }
2198 #endif
2199
2200         /*
2201          * Call MI attach routine.
2202          */
2203         ether_ifattach(ifp, ether_addr, NULL);
2204
2205         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI) {
2206                 if (sc->bnx_flags & BNX_FLAG_ONESHOT_MSI) {
2207                         intr_func = bnx_msi_oneshot;
2208                         if (bootverbose)
2209                                 device_printf(dev, "oneshot MSI\n");
2210                 } else {
2211                         intr_func = bnx_msi;
2212                 }
2213         } else {
2214                 intr_func = bnx_intr_legacy;
2215         }
2216         error = bus_setup_intr(dev, sc->bnx_irq, INTR_MPSAFE, intr_func, sc,
2217             &sc->bnx_intrhand, ifp->if_serializer);
2218         if (error) {
2219                 ether_ifdetach(ifp);
2220                 device_printf(dev, "couldn't set up irq\n");
2221                 goto fail;
2222         }
2223
2224         ifp->if_cpuid = rman_get_cpuid(sc->bnx_irq);
2225         KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
2226
2227         sc->bnx_stat_cpuid = ifp->if_cpuid;
2228         sc->bnx_intr_cpuid = ifp->if_cpuid;
2229
2230         return(0);
2231 fail:
2232         bnx_detach(dev);
2233         return(error);
2234 }
2235
2236 static int
2237 bnx_detach(device_t dev)
2238 {
2239         struct bnx_softc *sc = device_get_softc(dev);
2240
2241         if (device_is_attached(dev)) {
2242                 struct ifnet *ifp = &sc->arpcom.ac_if;
2243
2244                 lwkt_serialize_enter(ifp->if_serializer);
2245                 bnx_stop(sc);
2246                 bnx_reset(sc);
2247                 bus_teardown_intr(dev, sc->bnx_irq, sc->bnx_intrhand);
2248                 lwkt_serialize_exit(ifp->if_serializer);
2249
2250                 ether_ifdetach(ifp);
2251         }
2252
2253         if (sc->bnx_flags & BNX_FLAG_TBI)
2254                 ifmedia_removeall(&sc->bnx_ifmedia);
2255         if (sc->bnx_miibus)
2256                 device_delete_child(dev, sc->bnx_miibus);
2257         bus_generic_detach(dev);
2258
2259         if (sc->bnx_irq != NULL) {
2260                 bus_release_resource(dev, SYS_RES_IRQ, sc->bnx_irq_rid,
2261                     sc->bnx_irq);
2262         }
2263         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI)
2264                 pci_release_msi(dev);
2265
2266         if (sc->bnx_res != NULL) {
2267                 bus_release_resource(dev, SYS_RES_MEMORY,
2268                     BGE_PCI_BAR0, sc->bnx_res);
2269         }
2270
2271         if (sc->bnx_sysctl_tree != NULL)
2272                 sysctl_ctx_free(&sc->bnx_sysctl_ctx);
2273
2274         bnx_dma_free(sc);
2275
2276         return 0;
2277 }
2278
2279 static void
2280 bnx_reset(struct bnx_softc *sc)
2281 {
2282         device_t dev;
2283         uint32_t cachesize, command, pcistate, reset;
2284         void (*write_op)(struct bnx_softc *, uint32_t, uint32_t);
2285         int i, val = 0;
2286         uint16_t devctl;
2287
2288         dev = sc->bnx_dev;
2289
2290         if (sc->bnx_asicrev != BGE_ASICREV_BCM5906)
2291                 write_op = bnx_writemem_direct;
2292         else
2293                 write_op = bnx_writereg_ind;
2294
2295         /* Save some important PCI state. */
2296         cachesize = pci_read_config(dev, BGE_PCI_CACHESZ, 4);
2297         command = pci_read_config(dev, BGE_PCI_CMD, 4);
2298         pcistate = pci_read_config(dev, BGE_PCI_PCISTATE, 4);
2299
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
2305         /* Disable fastboot on controllers that support it. */
2306         if (bootverbose)
2307                 if_printf(&sc->arpcom.ac_if, "Disabling fastboot\n");
2308         CSR_WRITE_4(sc, BGE_FASTBOOT_PC, 0x0);
2309
2310         /*
2311          * Write the magic number to SRAM at offset 0xB50.
2312          * When firmware finishes its initialization it will
2313          * write ~BGE_MAGIC_NUMBER to the same location.
2314          */
2315         bnx_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER);
2316
2317         reset = BGE_MISCCFG_RESET_CORE_CLOCKS|(65<<1);
2318
2319         /* XXX: Broadcom Linux driver. */
2320         /* Force PCI-E 1.0a mode */
2321         if (!BNX_IS_57765_PLUS(sc) &&
2322             CSR_READ_4(sc, BGE_PCIE_PHY_TSTCTL) ==
2323             (BGE_PCIE_PHY_TSTCTL_PSCRAM |
2324              BGE_PCIE_PHY_TSTCTL_PCIE10)) {
2325                 CSR_WRITE_4(sc, BGE_PCIE_PHY_TSTCTL,
2326                     BGE_PCIE_PHY_TSTCTL_PSCRAM);
2327         }
2328         if (sc->bnx_chipid != BGE_CHIPID_BCM5750_A0) {
2329                 /* Prevent PCIE link training during global reset */
2330                 CSR_WRITE_4(sc, BGE_MISC_CFG, (1<<29));
2331                 reset |= (1<<29);
2332         }
2333
2334         /*
2335          * Set GPHY Power Down Override to leave GPHY
2336          * powered up in D0 uninitialized.
2337          */
2338         if ((sc->bnx_flags & BNX_FLAG_CPMU) == 0)
2339                 reset |= BGE_MISCCFG_GPHY_PD_OVERRIDE;
2340
2341         /* Issue global reset */
2342         write_op(sc, BGE_MISC_CFG, reset);
2343
2344         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
2345                 uint32_t status, ctrl;
2346
2347                 status = CSR_READ_4(sc, BGE_VCPU_STATUS);
2348                 CSR_WRITE_4(sc, BGE_VCPU_STATUS,
2349                     status | BGE_VCPU_STATUS_DRV_RESET);
2350                 ctrl = CSR_READ_4(sc, BGE_VCPU_EXT_CTRL);
2351                 CSR_WRITE_4(sc, BGE_VCPU_EXT_CTRL,
2352                     ctrl & ~BGE_VCPU_EXT_CTRL_HALT_CPU);
2353         }
2354
2355         DELAY(1000);
2356
2357         /* XXX: Broadcom Linux driver. */
2358         if (sc->bnx_chipid == BGE_CHIPID_BCM5750_A0) {
2359                 uint32_t v;
2360
2361                 DELAY(500000); /* wait for link training to complete */
2362                 v = pci_read_config(dev, 0xc4, 4);
2363                 pci_write_config(dev, 0xc4, v | (1<<15), 4);
2364         }
2365
2366         devctl = pci_read_config(dev, sc->bnx_pciecap + PCIER_DEVCTRL, 2);
2367
2368         /* Disable no snoop and disable relaxed ordering. */
2369         devctl &= ~(PCIEM_DEVCTL_RELAX_ORDER | PCIEM_DEVCTL_NOSNOOP);
2370
2371         /* Old PCI-E chips only support 128 bytes Max PayLoad Size. */
2372         if ((sc->bnx_flags & BNX_FLAG_CPMU) == 0) {
2373                 devctl &= ~PCIEM_DEVCTL_MAX_PAYLOAD_MASK;
2374                 devctl |= PCIEM_DEVCTL_MAX_PAYLOAD_128;
2375         }
2376
2377         pci_write_config(dev, sc->bnx_pciecap + PCIER_DEVCTRL,
2378             devctl, 2);
2379
2380         /* Clear error status. */
2381         pci_write_config(dev, sc->bnx_pciecap + PCIER_DEVSTS,
2382             PCIEM_DEVSTS_CORR_ERR |
2383             PCIEM_DEVSTS_NFATAL_ERR |
2384             PCIEM_DEVSTS_FATAL_ERR |
2385             PCIEM_DEVSTS_UNSUPP_REQ, 2);
2386
2387         /* Reset some of the PCI state that got zapped by reset */
2388         pci_write_config(dev, BGE_PCI_MISC_CTL,
2389             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2390             BGE_HIF_SWAP_OPTIONS|BGE_PCIMISCCTL_PCISTATE_RW|
2391             BGE_PCIMISCCTL_TAGGED_STATUS, 4);
2392         pci_write_config(dev, BGE_PCI_CACHESZ, cachesize, 4);
2393         pci_write_config(dev, BGE_PCI_CMD, command, 4);
2394         write_op(sc, BGE_MISC_CFG, (65 << 1));
2395
2396         /* Enable memory arbiter */
2397         CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
2398
2399         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
2400                 for (i = 0; i < BNX_TIMEOUT; i++) {
2401                         val = CSR_READ_4(sc, BGE_VCPU_STATUS);
2402                         if (val & BGE_VCPU_STATUS_INIT_DONE)
2403                                 break;
2404                         DELAY(100);
2405                 }
2406                 if (i == BNX_TIMEOUT) {
2407                         if_printf(&sc->arpcom.ac_if, "reset timed out\n");
2408                         return;
2409                 }
2410         } else {
2411                 /*
2412                  * Poll until we see the 1's complement of the magic number.
2413                  * This indicates that the firmware initialization
2414                  * is complete.
2415                  */
2416                 for (i = 0; i < BNX_FIRMWARE_TIMEOUT; i++) {
2417                         val = bnx_readmem_ind(sc, BGE_SOFTWARE_GENCOMM);
2418                         if (val == ~BGE_MAGIC_NUMBER)
2419                                 break;
2420                         DELAY(10);
2421                 }
2422                 if (i == BNX_FIRMWARE_TIMEOUT) {
2423                         if_printf(&sc->arpcom.ac_if, "firmware handshake "
2424                                   "timed out, found 0x%08x\n", val);
2425                 }
2426
2427                 /* BCM57765 A0 needs additional time before accessing. */
2428                 if (sc->bnx_chipid == BGE_CHIPID_BCM57765_A0)
2429                         DELAY(10 * 1000);
2430         }
2431
2432         /*
2433          * XXX Wait for the value of the PCISTATE register to
2434          * return to its original pre-reset state. This is a
2435          * fairly good indicator of reset completion. If we don't
2436          * wait for the reset to fully complete, trying to read
2437          * from the device's non-PCI registers may yield garbage
2438          * results.
2439          */
2440         for (i = 0; i < BNX_TIMEOUT; i++) {
2441                 if (pci_read_config(dev, BGE_PCI_PCISTATE, 4) == pcistate)
2442                         break;
2443                 DELAY(10);
2444         }
2445
2446         /* Fix up byte swapping */
2447         CSR_WRITE_4(sc, BGE_MODE_CTL, bnx_dma_swap_options(sc));
2448
2449         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
2450
2451         /*
2452          * The 5704 in TBI mode apparently needs some special
2453          * adjustment to insure the SERDES drive level is set
2454          * to 1.2V.
2455          */
2456         if (sc->bnx_asicrev == BGE_ASICREV_BCM5704 &&
2457             (sc->bnx_flags & BNX_FLAG_TBI)) {
2458                 uint32_t serdescfg;
2459
2460                 serdescfg = CSR_READ_4(sc, BGE_SERDES_CFG);
2461                 serdescfg = (serdescfg & ~0xFFF) | 0x880;
2462                 CSR_WRITE_4(sc, BGE_SERDES_CFG, serdescfg);
2463         }
2464
2465         CSR_WRITE_4(sc, BGE_MI_MODE,
2466             sc->bnx_mi_mode & ~BGE_MIMODE_AUTOPOLL);
2467         DELAY(80);
2468
2469         /* XXX: Broadcom Linux driver. */
2470         if (!BNX_IS_57765_PLUS(sc)) {
2471                 uint32_t v;
2472
2473                 /* Enable Data FIFO protection. */
2474                 v = CSR_READ_4(sc, BGE_PCIE_TLDLPL_PORT);
2475                 CSR_WRITE_4(sc, BGE_PCIE_TLDLPL_PORT, v | (1 << 25));
2476         }
2477
2478         DELAY(10000);
2479
2480         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
2481                 BNX_CLRBIT(sc, BGE_CPMU_CLCK_ORIDE,
2482                     CPMU_CLCK_ORIDE_MAC_ORIDE_EN);
2483         }
2484 }
2485
2486 /*
2487  * Frame reception handling. This is called if there's a frame
2488  * on the receive return list.
2489  *
2490  * Note: we have to be able to handle two possibilities here:
2491  * 1) the frame is from the jumbo recieve ring
2492  * 2) the frame is from the standard receive ring
2493  */
2494
2495 static void
2496 bnx_rxeof(struct bnx_softc *sc, uint16_t rx_prod)
2497 {
2498         struct ifnet *ifp;
2499         int stdcnt = 0, jumbocnt = 0;
2500
2501         ifp = &sc->arpcom.ac_if;
2502
2503         while (sc->bnx_rx_saved_considx != rx_prod) {
2504                 struct bge_rx_bd        *cur_rx;
2505                 uint32_t                rxidx;
2506                 struct mbuf             *m = NULL;
2507                 uint16_t                vlan_tag = 0;
2508                 int                     have_tag = 0;
2509
2510                 cur_rx =
2511             &sc->bnx_ldata.bnx_rx_return_ring[sc->bnx_rx_saved_considx];
2512
2513                 rxidx = cur_rx->bge_idx;
2514                 BNX_INC(sc->bnx_rx_saved_considx, sc->bnx_return_ring_cnt);
2515
2516                 if (cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) {
2517                         have_tag = 1;
2518                         vlan_tag = cur_rx->bge_vlan_tag;
2519                 }
2520
2521                 if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) {
2522                         BNX_INC(sc->bnx_jumbo, BGE_JUMBO_RX_RING_CNT);
2523                         jumbocnt++;
2524
2525                         if (rxidx != sc->bnx_jumbo) {
2526                                 ifp->if_ierrors++;
2527                                 if_printf(ifp, "sw jumbo index(%d) "
2528                                     "and hw jumbo index(%d) mismatch, drop!\n",
2529                                     sc->bnx_jumbo, rxidx);
2530                                 bnx_setup_rxdesc_jumbo(sc, rxidx);
2531                                 continue;
2532                         }
2533
2534                         m = sc->bnx_cdata.bnx_rx_jumbo_chain[rxidx].bnx_mbuf;
2535                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2536                                 ifp->if_ierrors++;
2537                                 bnx_setup_rxdesc_jumbo(sc, sc->bnx_jumbo);
2538                                 continue;
2539                         }
2540                         if (bnx_newbuf_jumbo(sc, sc->bnx_jumbo, 0)) {
2541                                 ifp->if_ierrors++;
2542                                 bnx_setup_rxdesc_jumbo(sc, sc->bnx_jumbo);
2543                                 continue;
2544                         }
2545                 } else {
2546                         BNX_INC(sc->bnx_std, BGE_STD_RX_RING_CNT);
2547                         stdcnt++;
2548
2549                         if (rxidx != sc->bnx_std) {
2550                                 ifp->if_ierrors++;
2551                                 if_printf(ifp, "sw std index(%d) "
2552                                     "and hw std index(%d) mismatch, drop!\n",
2553                                     sc->bnx_std, rxidx);
2554                                 bnx_setup_rxdesc_std(sc, rxidx);
2555                                 continue;
2556                         }
2557
2558                         m = sc->bnx_cdata.bnx_rx_std_chain[rxidx].bnx_mbuf;
2559                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2560                                 ifp->if_ierrors++;
2561                                 bnx_setup_rxdesc_std(sc, sc->bnx_std);
2562                                 continue;
2563                         }
2564                         if (bnx_newbuf_std(sc, sc->bnx_std, 0)) {
2565                                 ifp->if_ierrors++;
2566                                 bnx_setup_rxdesc_std(sc, sc->bnx_std);
2567                                 continue;
2568                         }
2569                 }
2570
2571                 ifp->if_ipackets++;
2572                 m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN;
2573                 m->m_pkthdr.rcvif = ifp;
2574
2575                 if ((ifp->if_capenable & IFCAP_RXCSUM) &&
2576                     (cur_rx->bge_flags & BGE_RXBDFLAG_IPV6) == 0) {
2577                         if (cur_rx->bge_flags & BGE_RXBDFLAG_IP_CSUM) {
2578                                 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
2579                                 if ((cur_rx->bge_error_flag &
2580                                     BGE_RXERRFLAG_IP_CSUM_NOK) == 0)
2581                                         m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
2582                         }
2583                         if (cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM) {
2584                                 m->m_pkthdr.csum_data =
2585                                     cur_rx->bge_tcp_udp_csum;
2586                                 m->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
2587                                     CSUM_PSEUDO_HDR;
2588                         }
2589                 }
2590
2591                 /*
2592                  * If we received a packet with a vlan tag, pass it
2593                  * to vlan_input() instead of ether_input().
2594                  */
2595                 if (have_tag) {
2596                         m->m_flags |= M_VLANTAG;
2597                         m->m_pkthdr.ether_vlantag = vlan_tag;
2598                         have_tag = vlan_tag = 0;
2599                 }
2600                 ifp->if_input(ifp, m);
2601         }
2602
2603         bnx_writembx(sc, BGE_MBX_RX_CONS0_LO, sc->bnx_rx_saved_considx);
2604         if (stdcnt)
2605                 bnx_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bnx_std);
2606         if (jumbocnt)
2607                 bnx_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bnx_jumbo);
2608 }
2609
2610 static void
2611 bnx_txeof(struct bnx_softc *sc, uint16_t tx_cons)
2612 {
2613         struct ifnet *ifp;
2614
2615         ifp = &sc->arpcom.ac_if;
2616
2617         /*
2618          * Go through our tx ring and free mbufs for those
2619          * frames that have been sent.
2620          */
2621         while (sc->bnx_tx_saved_considx != tx_cons) {
2622                 uint32_t idx = 0;
2623
2624                 idx = sc->bnx_tx_saved_considx;
2625                 if (sc->bnx_cdata.bnx_tx_chain[idx] != NULL) {
2626                         ifp->if_opackets++;
2627                         bus_dmamap_unload(sc->bnx_cdata.bnx_tx_mtag,
2628                             sc->bnx_cdata.bnx_tx_dmamap[idx]);
2629                         m_freem(sc->bnx_cdata.bnx_tx_chain[idx]);
2630                         sc->bnx_cdata.bnx_tx_chain[idx] = NULL;
2631                 }
2632                 sc->bnx_txcnt--;
2633                 BNX_INC(sc->bnx_tx_saved_considx, BGE_TX_RING_CNT);
2634         }
2635
2636         if ((BGE_TX_RING_CNT - sc->bnx_txcnt) >=
2637             (BNX_NSEG_RSVD + BNX_NSEG_SPARE))
2638                 ifp->if_flags &= ~IFF_OACTIVE;
2639
2640         if (sc->bnx_txcnt == 0)
2641                 ifp->if_timer = 0;
2642
2643         if (!ifq_is_empty(&ifp->if_snd))
2644                 if_devstart(ifp);
2645 }
2646
2647 #ifdef IFPOLL_ENABLE
2648
2649 static void
2650 bnx_npoll(struct ifnet *ifp, struct ifpoll_info *info)
2651 {
2652         struct bnx_softc *sc = ifp->if_softc;
2653
2654         ASSERT_SERIALIZED(ifp->if_serializer);
2655
2656         if (info != NULL) {
2657                 int cpuid = sc->bnx_npoll_cpuid;
2658
2659                 info->ifpi_rx[cpuid].poll_func = bnx_npoll_compat;
2660                 info->ifpi_rx[cpuid].arg = NULL;
2661                 info->ifpi_rx[cpuid].serializer = ifp->if_serializer;
2662
2663                 if (ifp->if_flags & IFF_RUNNING)
2664                         bnx_disable_intr(sc);
2665                 ifp->if_npoll_cpuid = cpuid;
2666         } else {
2667                 if (ifp->if_flags & IFF_RUNNING)
2668                         bnx_enable_intr(sc);
2669                 ifp->if_npoll_cpuid = -1;
2670         }
2671 }
2672
2673 static void
2674 bnx_npoll_compat(struct ifnet *ifp, void *arg __unused, int cycle __unused)
2675 {
2676         struct bnx_softc *sc = ifp->if_softc;
2677         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
2678         uint16_t rx_prod, tx_cons;
2679
2680         ASSERT_SERIALIZED(ifp->if_serializer);
2681
2682         if (sc->bnx_npoll_stcount-- == 0) {
2683                 sc->bnx_npoll_stcount = sc->bnx_npoll_stfrac;
2684                 /*
2685                  * Process link state changes.
2686                  */
2687                 bnx_link_poll(sc);
2688         }
2689
2690         sc->bnx_status_tag = sblk->bge_status_tag;
2691
2692         /*
2693          * Use a load fence to ensure that status_tag is saved
2694          * before rx_prod and tx_cons.
2695          */
2696         cpu_lfence();
2697
2698         rx_prod = sblk->bge_idx[0].bge_rx_prod_idx;
2699         tx_cons = sblk->bge_idx[0].bge_tx_cons_idx;
2700
2701         rx_prod = sblk->bge_idx[0].bge_rx_prod_idx;
2702         if (sc->bnx_rx_saved_considx != rx_prod)
2703                 bnx_rxeof(sc, rx_prod);
2704
2705         tx_cons = sblk->bge_idx[0].bge_tx_cons_idx;
2706         if (sc->bnx_tx_saved_considx != tx_cons)
2707                 bnx_txeof(sc, tx_cons);
2708 }
2709
2710 #endif  /* IFPOLL_ENABLE */
2711
2712 static void
2713 bnx_intr_legacy(void *xsc)
2714 {
2715         struct bnx_softc *sc = xsc;
2716         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
2717
2718         if (sc->bnx_status_tag == sblk->bge_status_tag) {
2719                 uint32_t val;
2720
2721                 val = pci_read_config(sc->bnx_dev, BGE_PCI_PCISTATE, 4);
2722                 if (val & BGE_PCISTAT_INTR_NOTACT)
2723                         return;
2724         }
2725
2726         /*
2727          * NOTE:
2728          * Interrupt will have to be disabled if tagged status
2729          * is used, else interrupt will always be asserted on
2730          * certain chips (at least on BCM5750 AX/BX).
2731          */
2732         bnx_writembx(sc, BGE_MBX_IRQ0_LO, 1);
2733
2734         bnx_intr(sc);
2735 }
2736
2737 static void
2738 bnx_msi(void *xsc)
2739 {
2740         struct bnx_softc *sc = xsc;
2741
2742         /* Disable interrupt first */
2743         bnx_writembx(sc, BGE_MBX_IRQ0_LO, 1);
2744         bnx_intr(sc);
2745 }
2746
2747 static void
2748 bnx_msi_oneshot(void *xsc)
2749 {
2750         bnx_intr(xsc);
2751 }
2752
2753 static void
2754 bnx_intr(struct bnx_softc *sc)
2755 {
2756         struct ifnet *ifp = &sc->arpcom.ac_if;
2757         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
2758         uint16_t rx_prod, tx_cons;
2759         uint32_t status;
2760
2761         sc->bnx_status_tag = sblk->bge_status_tag;
2762         /*
2763          * Use a load fence to ensure that status_tag is saved
2764          * before rx_prod, tx_cons and status.
2765          */
2766         cpu_lfence();
2767
2768         rx_prod = sblk->bge_idx[0].bge_rx_prod_idx;
2769         tx_cons = sblk->bge_idx[0].bge_tx_cons_idx;
2770         status = sblk->bge_status;
2771
2772         if ((status & BGE_STATFLAG_LINKSTATE_CHANGED) || sc->bnx_link_evt)
2773                 bnx_link_poll(sc);
2774
2775         if (ifp->if_flags & IFF_RUNNING) {
2776                 if (sc->bnx_rx_saved_considx != rx_prod)
2777                         bnx_rxeof(sc, rx_prod);
2778
2779                 if (sc->bnx_tx_saved_considx != tx_cons)
2780                         bnx_txeof(sc, tx_cons);
2781         }
2782
2783         bnx_writembx(sc, BGE_MBX_IRQ0_LO, sc->bnx_status_tag << 24);
2784
2785         if (sc->bnx_coal_chg)
2786                 bnx_coal_change(sc);
2787 }
2788
2789 static void
2790 bnx_tick(void *xsc)
2791 {
2792         struct bnx_softc *sc = xsc;
2793         struct ifnet *ifp = &sc->arpcom.ac_if;
2794
2795         lwkt_serialize_enter(ifp->if_serializer);
2796
2797         KKASSERT(mycpuid == sc->bnx_stat_cpuid);
2798
2799         bnx_stats_update_regs(sc);
2800
2801         if (sc->bnx_flags & BNX_FLAG_TBI) {
2802                 /*
2803                  * Since in TBI mode auto-polling can't be used we should poll
2804                  * link status manually. Here we register pending link event
2805                  * and trigger interrupt.
2806                  */
2807                 sc->bnx_link_evt++;
2808                 BNX_SETBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_COAL_NOW);
2809         } else if (!sc->bnx_link) {
2810                 mii_tick(device_get_softc(sc->bnx_miibus));
2811         }
2812
2813         callout_reset(&sc->bnx_stat_timer, hz, bnx_tick, sc);
2814
2815         lwkt_serialize_exit(ifp->if_serializer);
2816 }
2817
2818 static void
2819 bnx_stats_update_regs(struct bnx_softc *sc)
2820 {
2821         struct ifnet *ifp = &sc->arpcom.ac_if;
2822         struct bge_mac_stats_regs stats;
2823         uint32_t *s;
2824         int i;
2825
2826         s = (uint32_t *)&stats;
2827         for (i = 0; i < sizeof(struct bge_mac_stats_regs); i += 4) {
2828                 *s = CSR_READ_4(sc, BGE_RX_STATS + i);
2829                 s++;
2830         }
2831
2832         ifp->if_collisions +=
2833            (stats.dot3StatsSingleCollisionFrames +
2834            stats.dot3StatsMultipleCollisionFrames +
2835            stats.dot3StatsExcessiveCollisions +
2836            stats.dot3StatsLateCollisions) -
2837            ifp->if_collisions;
2838 }
2839
2840 /*
2841  * Encapsulate an mbuf chain in the tx ring  by coupling the mbuf data
2842  * pointers to descriptors.
2843  */
2844 static int
2845 bnx_encap(struct bnx_softc *sc, struct mbuf **m_head0, uint32_t *txidx)
2846 {
2847         struct bge_tx_bd *d = NULL;
2848         uint16_t csum_flags = 0, vlan_tag = 0, mss = 0;
2849         bus_dma_segment_t segs[BNX_NSEG_NEW];
2850         bus_dmamap_t map;
2851         int error, maxsegs, nsegs, idx, i;
2852         struct mbuf *m_head = *m_head0, *m_new;
2853
2854         if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
2855 #ifdef BNX_TSO_DEBUG
2856                 int tso_nsegs;
2857 #endif
2858
2859                 error = bnx_setup_tso(sc, m_head0, &mss, &csum_flags);
2860                 if (error)
2861                         return error;
2862                 m_head = *m_head0;
2863
2864 #ifdef BNX_TSO_DEBUG
2865                 tso_nsegs = (m_head->m_pkthdr.len /
2866                     m_head->m_pkthdr.tso_segsz) - 1;
2867                 if (tso_nsegs > (BNX_TSO_NSTATS - 1))
2868                         tso_nsegs = BNX_TSO_NSTATS - 1;
2869                 else if (tso_nsegs < 0)
2870                         tso_nsegs = 0;
2871                 sc->bnx_tsosegs[tso_nsegs]++;
2872 #endif
2873         } else if (m_head->m_pkthdr.csum_flags & BNX_CSUM_FEATURES) {
2874                 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
2875                         csum_flags |= BGE_TXBDFLAG_IP_CSUM;
2876                 if (m_head->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))
2877                         csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM;
2878                 if (m_head->m_flags & M_LASTFRAG)
2879                         csum_flags |= BGE_TXBDFLAG_IP_FRAG_END;
2880                 else if (m_head->m_flags & M_FRAG)
2881                         csum_flags |= BGE_TXBDFLAG_IP_FRAG;
2882         }
2883         if (m_head->m_flags & M_VLANTAG) {
2884                 csum_flags |= BGE_TXBDFLAG_VLAN_TAG;
2885                 vlan_tag = m_head->m_pkthdr.ether_vlantag;
2886         }
2887
2888         idx = *txidx;
2889         map = sc->bnx_cdata.bnx_tx_dmamap[idx];
2890
2891         maxsegs = (BGE_TX_RING_CNT - sc->bnx_txcnt) - BNX_NSEG_RSVD;
2892         KASSERT(maxsegs >= BNX_NSEG_SPARE,
2893                 ("not enough segments %d", maxsegs));
2894
2895         if (maxsegs > BNX_NSEG_NEW)
2896                 maxsegs = BNX_NSEG_NEW;
2897
2898         /*
2899          * Pad outbound frame to BGE_MIN_FRAMELEN for an unusual reason.
2900          * The bge hardware will pad out Tx runts to BGE_MIN_FRAMELEN,
2901          * but when such padded frames employ the bge IP/TCP checksum
2902          * offload, the hardware checksum assist gives incorrect results
2903          * (possibly from incorporating its own padding into the UDP/TCP
2904          * checksum; who knows).  If we pad such runts with zeros, the
2905          * onboard checksum comes out correct.
2906          */
2907         if ((csum_flags & BGE_TXBDFLAG_TCP_UDP_CSUM) &&
2908             m_head->m_pkthdr.len < BNX_MIN_FRAMELEN) {
2909                 error = m_devpad(m_head, BNX_MIN_FRAMELEN);
2910                 if (error)
2911                         goto back;
2912         }
2913
2914         if ((sc->bnx_flags & BNX_FLAG_SHORTDMA) && m_head->m_next != NULL) {
2915                 m_new = bnx_defrag_shortdma(m_head);
2916                 if (m_new == NULL) {
2917                         error = ENOBUFS;
2918                         goto back;
2919                 }
2920                 *m_head0 = m_head = m_new;
2921         }
2922         if ((m_head->m_pkthdr.csum_flags & CSUM_TSO) == 0 &&
2923             sc->bnx_force_defrag && m_head->m_next != NULL) {
2924                 /*
2925                  * Forcefully defragment mbuf chain to overcome hardware
2926                  * limitation which only support a single outstanding
2927                  * DMA read operation.  If it fails, keep moving on using
2928                  * the original mbuf chain.
2929                  */
2930                 m_new = m_defrag(m_head, MB_DONTWAIT);
2931                 if (m_new != NULL)
2932                         *m_head0 = m_head = m_new;
2933         }
2934
2935         error = bus_dmamap_load_mbuf_defrag(sc->bnx_cdata.bnx_tx_mtag, map,
2936                         m_head0, segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
2937         if (error)
2938                 goto back;
2939
2940         m_head = *m_head0;
2941         bus_dmamap_sync(sc->bnx_cdata.bnx_tx_mtag, map, BUS_DMASYNC_PREWRITE);
2942
2943         for (i = 0; ; i++) {
2944                 d = &sc->bnx_ldata.bnx_tx_ring[idx];
2945
2946                 d->bge_addr.bge_addr_lo = BGE_ADDR_LO(segs[i].ds_addr);
2947                 d->bge_addr.bge_addr_hi = BGE_ADDR_HI(segs[i].ds_addr);
2948                 d->bge_len = segs[i].ds_len;
2949                 d->bge_flags = csum_flags;
2950                 d->bge_vlan_tag = vlan_tag;
2951                 d->bge_mss = mss;
2952
2953                 if (i == nsegs - 1)
2954                         break;
2955                 BNX_INC(idx, BGE_TX_RING_CNT);
2956         }
2957         /* Mark the last segment as end of packet... */
2958         d->bge_flags |= BGE_TXBDFLAG_END;
2959
2960         /*
2961          * Insure that the map for this transmission is placed at
2962          * the array index of the last descriptor in this chain.
2963          */
2964         sc->bnx_cdata.bnx_tx_dmamap[*txidx] = sc->bnx_cdata.bnx_tx_dmamap[idx];
2965         sc->bnx_cdata.bnx_tx_dmamap[idx] = map;
2966         sc->bnx_cdata.bnx_tx_chain[idx] = m_head;
2967         sc->bnx_txcnt += nsegs;
2968
2969         BNX_INC(idx, BGE_TX_RING_CNT);
2970         *txidx = idx;
2971 back:
2972         if (error) {
2973                 m_freem(*m_head0);
2974                 *m_head0 = NULL;
2975         }
2976         return error;
2977 }
2978
2979 /*
2980  * Main transmit routine. To avoid having to do mbuf copies, we put pointers
2981  * to the mbuf data regions directly in the transmit descriptors.
2982  */
2983 static void
2984 bnx_start(struct ifnet *ifp)
2985 {
2986         struct bnx_softc *sc = ifp->if_softc;
2987         struct mbuf *m_head = NULL;
2988         uint32_t prodidx;
2989         int need_trans;
2990
2991         if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
2992                 return;
2993
2994         prodidx = sc->bnx_tx_prodidx;
2995
2996         need_trans = 0;
2997         while (sc->bnx_cdata.bnx_tx_chain[prodidx] == NULL) {
2998                 /*
2999                  * Sanity check: avoid coming within BGE_NSEG_RSVD
3000                  * descriptors of the end of the ring.  Also make
3001                  * sure there are BGE_NSEG_SPARE descriptors for
3002                  * jumbo buffers' or TSO segments' defragmentation.
3003                  */
3004                 if ((BGE_TX_RING_CNT - sc->bnx_txcnt) <
3005                     (BNX_NSEG_RSVD + BNX_NSEG_SPARE)) {
3006                         ifp->if_flags |= IFF_OACTIVE;
3007                         break;
3008                 }
3009
3010                 m_head = ifq_dequeue(&ifp->if_snd, NULL);
3011                 if (m_head == NULL)
3012                         break;
3013
3014                 /*
3015                  * Pack the data into the transmit ring. If we
3016                  * don't have room, set the OACTIVE flag and wait
3017                  * for the NIC to drain the ring.
3018                  */
3019                 if (bnx_encap(sc, &m_head, &prodidx)) {
3020                         ifp->if_flags |= IFF_OACTIVE;
3021                         ifp->if_oerrors++;
3022                         break;
3023                 }
3024                 need_trans = 1;
3025
3026                 ETHER_BPF_MTAP(ifp, m_head);
3027         }
3028
3029         if (!need_trans)
3030                 return;
3031
3032         /* Transmit */
3033         bnx_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
3034
3035         sc->bnx_tx_prodidx = prodidx;
3036
3037         /*
3038          * Set a timeout in case the chip goes out to lunch.
3039          */
3040         ifp->if_timer = 5;
3041 }
3042
3043 static void
3044 bnx_init(void *xsc)
3045 {
3046         struct bnx_softc *sc = xsc;
3047         struct ifnet *ifp = &sc->arpcom.ac_if;
3048         uint16_t *m;
3049         uint32_t mode;
3050
3051         ASSERT_SERIALIZED(ifp->if_serializer);
3052
3053         /* Cancel pending I/O and flush buffers. */
3054         bnx_stop(sc);
3055         bnx_reset(sc);
3056         bnx_chipinit(sc);
3057
3058         /*
3059          * Init the various state machines, ring
3060          * control blocks and firmware.
3061          */
3062         if (bnx_blockinit(sc)) {
3063                 if_printf(ifp, "initialization failure\n");
3064                 bnx_stop(sc);
3065                 return;
3066         }
3067
3068         /* Specify MTU. */
3069         CSR_WRITE_4(sc, BGE_RX_MTU, ifp->if_mtu +
3070             ETHER_HDR_LEN + ETHER_CRC_LEN + EVL_ENCAPLEN);
3071
3072         /* Load our MAC address. */
3073         m = (uint16_t *)&sc->arpcom.ac_enaddr[0];
3074         CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0]));
3075         CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2]));
3076
3077         /* Enable or disable promiscuous mode as needed. */
3078         bnx_setpromisc(sc);
3079
3080         /* Program multicast filter. */
3081         bnx_setmulti(sc);
3082
3083         /* Init RX ring. */
3084         if (bnx_init_rx_ring_std(sc)) {
3085                 if_printf(ifp, "RX ring initialization failed\n");
3086                 bnx_stop(sc);
3087                 return;
3088         }
3089
3090         /* Init jumbo RX ring. */
3091         if (ifp->if_mtu > (ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN)) {
3092                 if (bnx_init_rx_ring_jumbo(sc)) {
3093                         if_printf(ifp, "Jumbo RX ring initialization failed\n");
3094                         bnx_stop(sc);
3095                         return;
3096                 }
3097         }
3098
3099         /* Init our RX return ring index */
3100         sc->bnx_rx_saved_considx = 0;
3101
3102         /* Init TX ring. */
3103         bnx_init_tx_ring(sc);
3104
3105         /* Enable TX MAC state machine lockup fix. */
3106         mode = CSR_READ_4(sc, BGE_TX_MODE);
3107         mode |= BGE_TXMODE_MBUF_LOCKUP_FIX;
3108         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
3109                 mode &= ~(BGE_TXMODE_JMB_FRM_LEN | BGE_TXMODE_CNT_DN_MODE);
3110                 mode |= CSR_READ_4(sc, BGE_TX_MODE) &
3111                     (BGE_TXMODE_JMB_FRM_LEN | BGE_TXMODE_CNT_DN_MODE);
3112         }
3113         /* Turn on transmitter */
3114         CSR_WRITE_4(sc, BGE_TX_MODE, mode | BGE_TXMODE_ENABLE);
3115
3116         /* Turn on receiver */
3117         BNX_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
3118
3119         /*
3120          * Set the number of good frames to receive after RX MBUF
3121          * Low Watermark has been reached.  After the RX MAC receives
3122          * this number of frames, it will drop subsequent incoming
3123          * frames until the MBUF High Watermark is reached.
3124          */
3125         if (BNX_IS_57765_FAMILY(sc))
3126                 CSR_WRITE_4(sc, BGE_MAX_RX_FRAME_LOWAT, 1);
3127         else
3128                 CSR_WRITE_4(sc, BGE_MAX_RX_FRAME_LOWAT, 2);
3129
3130         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI) {
3131                 if (bootverbose) {
3132                         if_printf(ifp, "MSI_MODE: %#x\n",
3133                             CSR_READ_4(sc, BGE_MSI_MODE));
3134                 }
3135         }
3136
3137         /* Tell firmware we're alive. */
3138         BNX_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
3139
3140         /* Enable host interrupts if polling(4) is not enabled. */
3141         PCI_SETBIT(sc->bnx_dev, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA, 4);
3142 #ifdef IFPOLL_ENABLE
3143         if (ifp->if_flags & IFF_NPOLLING)
3144                 bnx_disable_intr(sc);
3145         else
3146 #endif
3147         bnx_enable_intr(sc);
3148
3149         bnx_ifmedia_upd(ifp);
3150
3151         ifp->if_flags |= IFF_RUNNING;
3152         ifp->if_flags &= ~IFF_OACTIVE;
3153
3154         callout_reset_bycpu(&sc->bnx_stat_timer, hz, bnx_tick, sc,
3155             sc->bnx_stat_cpuid);
3156 }
3157
3158 /*
3159  * Set media options.
3160  */
3161 static int
3162 bnx_ifmedia_upd(struct ifnet *ifp)
3163 {
3164         struct bnx_softc *sc = ifp->if_softc;
3165
3166         /* If this is a 1000baseX NIC, enable the TBI port. */
3167         if (sc->bnx_flags & BNX_FLAG_TBI) {
3168                 struct ifmedia *ifm = &sc->bnx_ifmedia;
3169
3170                 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
3171                         return(EINVAL);
3172
3173                 switch(IFM_SUBTYPE(ifm->ifm_media)) {
3174                 case IFM_AUTO:
3175                         break;
3176
3177                 case IFM_1000_SX:
3178                         if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) {
3179                                 BNX_CLRBIT(sc, BGE_MAC_MODE,
3180                                     BGE_MACMODE_HALF_DUPLEX);
3181                         } else {
3182                                 BNX_SETBIT(sc, BGE_MAC_MODE,
3183                                     BGE_MACMODE_HALF_DUPLEX);
3184                         }
3185                         break;
3186                 default:
3187                         return(EINVAL);
3188                 }
3189         } else {
3190                 struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3191
3192                 sc->bnx_link_evt++;
3193                 sc->bnx_link = 0;
3194                 if (mii->mii_instance) {
3195                         struct mii_softc *miisc;
3196
3197                         LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
3198                                 mii_phy_reset(miisc);
3199                 }
3200                 mii_mediachg(mii);
3201
3202                 /*
3203                  * Force an interrupt so that we will call bnx_link_upd
3204                  * if needed and clear any pending link state attention.
3205                  * Without this we are not getting any further interrupts
3206                  * for link state changes and thus will not UP the link and
3207                  * not be able to send in bnx_start.  The only way to get
3208                  * things working was to receive a packet and get an RX
3209                  * intr.
3210                  *
3211                  * bnx_tick should help for fiber cards and we might not
3212                  * need to do this here if BNX_FLAG_TBI is set but as
3213                  * we poll for fiber anyway it should not harm.
3214                  */
3215                 BNX_SETBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_COAL_NOW);
3216         }
3217         return(0);
3218 }
3219
3220 /*
3221  * Report current media status.
3222  */
3223 static void
3224 bnx_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
3225 {
3226         struct bnx_softc *sc = ifp->if_softc;
3227
3228         if (sc->bnx_flags & BNX_FLAG_TBI) {
3229                 ifmr->ifm_status = IFM_AVALID;
3230                 ifmr->ifm_active = IFM_ETHER;
3231                 if (CSR_READ_4(sc, BGE_MAC_STS) &
3232                     BGE_MACSTAT_TBI_PCS_SYNCHED) {
3233                         ifmr->ifm_status |= IFM_ACTIVE;
3234                 } else {
3235                         ifmr->ifm_active |= IFM_NONE;
3236                         return;
3237                 }
3238
3239                 ifmr->ifm_active |= IFM_1000_SX;
3240                 if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX)
3241                         ifmr->ifm_active |= IFM_HDX;
3242                 else
3243                         ifmr->ifm_active |= IFM_FDX;
3244         } else {
3245                 struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3246
3247                 mii_pollstat(mii);
3248                 ifmr->ifm_active = mii->mii_media_active;
3249                 ifmr->ifm_status = mii->mii_media_status;
3250         }
3251 }
3252
3253 static int
3254 bnx_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
3255 {
3256         struct bnx_softc *sc = ifp->if_softc;
3257         struct ifreq *ifr = (struct ifreq *)data;
3258         int mask, error = 0;
3259
3260         ASSERT_SERIALIZED(ifp->if_serializer);
3261
3262         switch (command) {
3263         case SIOCSIFMTU:
3264                 if ((!BNX_IS_JUMBO_CAPABLE(sc) && ifr->ifr_mtu > ETHERMTU) ||
3265                     (BNX_IS_JUMBO_CAPABLE(sc) &&
3266                      ifr->ifr_mtu > BNX_JUMBO_MTU)) {
3267                         error = EINVAL;
3268                 } else if (ifp->if_mtu != ifr->ifr_mtu) {
3269                         ifp->if_mtu = ifr->ifr_mtu;
3270                         if (ifp->if_flags & IFF_RUNNING)
3271                                 bnx_init(sc);
3272                 }
3273                 break;
3274         case SIOCSIFFLAGS:
3275                 if (ifp->if_flags & IFF_UP) {
3276                         if (ifp->if_flags & IFF_RUNNING) {
3277                                 mask = ifp->if_flags ^ sc->bnx_if_flags;
3278
3279                                 /*
3280                                  * If only the state of the PROMISC flag
3281                                  * changed, then just use the 'set promisc
3282                                  * mode' command instead of reinitializing
3283                                  * the entire NIC. Doing a full re-init
3284                                  * means reloading the firmware and waiting
3285                                  * for it to start up, which may take a
3286                                  * second or two.  Similarly for ALLMULTI.
3287                                  */
3288                                 if (mask & IFF_PROMISC)
3289                                         bnx_setpromisc(sc);
3290                                 if (mask & IFF_ALLMULTI)
3291                                         bnx_setmulti(sc);
3292                         } else {
3293                                 bnx_init(sc);
3294                         }
3295                 } else if (ifp->if_flags & IFF_RUNNING) {
3296                         bnx_stop(sc);
3297                 }
3298                 sc->bnx_if_flags = ifp->if_flags;
3299                 break;
3300         case SIOCADDMULTI:
3301         case SIOCDELMULTI:
3302                 if (ifp->if_flags & IFF_RUNNING)
3303                         bnx_setmulti(sc);
3304                 break;
3305         case SIOCSIFMEDIA:
3306         case SIOCGIFMEDIA:
3307                 if (sc->bnx_flags & BNX_FLAG_TBI) {
3308                         error = ifmedia_ioctl(ifp, ifr,
3309                             &sc->bnx_ifmedia, command);
3310                 } else {
3311                         struct mii_data *mii;
3312
3313                         mii = device_get_softc(sc->bnx_miibus);
3314                         error = ifmedia_ioctl(ifp, ifr,
3315                                               &mii->mii_media, command);
3316                 }
3317                 break;
3318         case SIOCSIFCAP:
3319                 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
3320                 if (mask & IFCAP_HWCSUM) {
3321                         ifp->if_capenable ^= (mask & IFCAP_HWCSUM);
3322                         if (ifp->if_capenable & IFCAP_TXCSUM)
3323                                 ifp->if_hwassist |= BNX_CSUM_FEATURES;
3324                         else
3325                                 ifp->if_hwassist &= ~BNX_CSUM_FEATURES;
3326                 }
3327                 if (mask & IFCAP_TSO) {
3328                         ifp->if_capenable ^= (mask & IFCAP_TSO);
3329                         if (ifp->if_capenable & IFCAP_TSO)
3330                                 ifp->if_hwassist |= CSUM_TSO;
3331                         else
3332                                 ifp->if_hwassist &= ~CSUM_TSO;
3333                 }
3334                 break;
3335         default:
3336                 error = ether_ioctl(ifp, command, data);
3337                 break;
3338         }
3339         return error;
3340 }
3341
3342 static void
3343 bnx_watchdog(struct ifnet *ifp)
3344 {
3345         struct bnx_softc *sc = ifp->if_softc;
3346
3347         if_printf(ifp, "watchdog timeout -- resetting\n");
3348
3349         bnx_init(sc);
3350
3351         ifp->if_oerrors++;
3352
3353         if (!ifq_is_empty(&ifp->if_snd))
3354                 if_devstart(ifp);
3355 }
3356
3357 /*
3358  * Stop the adapter and free any mbufs allocated to the
3359  * RX and TX lists.
3360  */
3361 static void
3362 bnx_stop(struct bnx_softc *sc)
3363 {
3364         struct ifnet *ifp = &sc->arpcom.ac_if;
3365
3366         ASSERT_SERIALIZED(ifp->if_serializer);
3367
3368         callout_stop(&sc->bnx_stat_timer);
3369
3370         /*
3371          * Disable all of the receiver blocks
3372          */
3373         bnx_stop_block(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
3374         bnx_stop_block(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
3375         bnx_stop_block(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
3376         bnx_stop_block(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE);
3377         bnx_stop_block(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
3378         bnx_stop_block(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE);
3379
3380         /*
3381          * Disable all of the transmit blocks
3382          */
3383         bnx_stop_block(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
3384         bnx_stop_block(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
3385         bnx_stop_block(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
3386         bnx_stop_block(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE);
3387         bnx_stop_block(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
3388         bnx_stop_block(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
3389
3390         /*
3391          * Shut down all of the memory managers and related
3392          * state machines.
3393          */
3394         bnx_stop_block(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
3395         bnx_stop_block(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE);
3396         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
3397         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
3398
3399         /* Disable host interrupts. */
3400         bnx_disable_intr(sc);
3401
3402         /*
3403          * Tell firmware we're shutting down.
3404          */
3405         BNX_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
3406
3407         /* Free the RX lists. */
3408         bnx_free_rx_ring_std(sc);
3409
3410         /* Free jumbo RX list. */
3411         if (BNX_IS_JUMBO_CAPABLE(sc))
3412                 bnx_free_rx_ring_jumbo(sc);
3413
3414         /* Free TX buffers. */
3415         bnx_free_tx_ring(sc);
3416
3417         sc->bnx_status_tag = 0;
3418         sc->bnx_link = 0;
3419         sc->bnx_coal_chg = 0;
3420
3421         sc->bnx_tx_saved_considx = BNX_TXCONS_UNSET;
3422
3423         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3424         ifp->if_timer = 0;
3425 }
3426
3427 /*
3428  * Stop all chip I/O so that the kernel's probe routines don't
3429  * get confused by errant DMAs when rebooting.
3430  */
3431 static void
3432 bnx_shutdown(device_t dev)
3433 {
3434         struct bnx_softc *sc = device_get_softc(dev);
3435         struct ifnet *ifp = &sc->arpcom.ac_if;
3436
3437         lwkt_serialize_enter(ifp->if_serializer);
3438         bnx_stop(sc);
3439         bnx_reset(sc);
3440         lwkt_serialize_exit(ifp->if_serializer);
3441 }
3442
3443 static int
3444 bnx_suspend(device_t dev)
3445 {
3446         struct bnx_softc *sc = device_get_softc(dev);
3447         struct ifnet *ifp = &sc->arpcom.ac_if;
3448
3449         lwkt_serialize_enter(ifp->if_serializer);
3450         bnx_stop(sc);
3451         lwkt_serialize_exit(ifp->if_serializer);
3452
3453         return 0;
3454 }
3455
3456 static int
3457 bnx_resume(device_t dev)
3458 {
3459         struct bnx_softc *sc = device_get_softc(dev);
3460         struct ifnet *ifp = &sc->arpcom.ac_if;
3461
3462         lwkt_serialize_enter(ifp->if_serializer);
3463
3464         if (ifp->if_flags & IFF_UP) {
3465                 bnx_init(sc);
3466
3467                 if (!ifq_is_empty(&ifp->if_snd))
3468                         if_devstart(ifp);
3469         }
3470
3471         lwkt_serialize_exit(ifp->if_serializer);
3472
3473         return 0;
3474 }
3475
3476 static void
3477 bnx_setpromisc(struct bnx_softc *sc)
3478 {
3479         struct ifnet *ifp = &sc->arpcom.ac_if;
3480
3481         if (ifp->if_flags & IFF_PROMISC)
3482                 BNX_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
3483         else
3484                 BNX_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
3485 }
3486
3487 static void
3488 bnx_dma_free(struct bnx_softc *sc)
3489 {
3490         int i;
3491
3492         /* Destroy RX mbuf DMA stuffs. */
3493         if (sc->bnx_cdata.bnx_rx_mtag != NULL) {
3494                 for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
3495                         bus_dmamap_destroy(sc->bnx_cdata.bnx_rx_mtag,
3496                             sc->bnx_cdata.bnx_rx_std_dmamap[i]);
3497                 }
3498                 bus_dmamap_destroy(sc->bnx_cdata.bnx_rx_mtag,
3499                                    sc->bnx_cdata.bnx_rx_tmpmap);
3500                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_rx_mtag);
3501         }
3502
3503         /* Destroy TX mbuf DMA stuffs. */
3504         if (sc->bnx_cdata.bnx_tx_mtag != NULL) {
3505                 for (i = 0; i < BGE_TX_RING_CNT; i++) {
3506                         bus_dmamap_destroy(sc->bnx_cdata.bnx_tx_mtag,
3507                             sc->bnx_cdata.bnx_tx_dmamap[i]);
3508                 }
3509                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_tx_mtag);
3510         }
3511
3512         /* Destroy standard RX ring */
3513         bnx_dma_block_free(sc->bnx_cdata.bnx_rx_std_ring_tag,
3514                            sc->bnx_cdata.bnx_rx_std_ring_map,
3515                            sc->bnx_ldata.bnx_rx_std_ring);
3516
3517         if (BNX_IS_JUMBO_CAPABLE(sc))
3518                 bnx_free_jumbo_mem(sc);
3519
3520         /* Destroy RX return ring */
3521         bnx_dma_block_free(sc->bnx_cdata.bnx_rx_return_ring_tag,
3522                            sc->bnx_cdata.bnx_rx_return_ring_map,
3523                            sc->bnx_ldata.bnx_rx_return_ring);
3524
3525         /* Destroy TX ring */
3526         bnx_dma_block_free(sc->bnx_cdata.bnx_tx_ring_tag,
3527                            sc->bnx_cdata.bnx_tx_ring_map,
3528                            sc->bnx_ldata.bnx_tx_ring);
3529
3530         /* Destroy status block */
3531         bnx_dma_block_free(sc->bnx_cdata.bnx_status_tag,
3532                            sc->bnx_cdata.bnx_status_map,
3533                            sc->bnx_ldata.bnx_status_block);
3534
3535         /* Destroy the parent tag */
3536         if (sc->bnx_cdata.bnx_parent_tag != NULL)
3537                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_parent_tag);
3538 }
3539
3540 static int
3541 bnx_dma_alloc(struct bnx_softc *sc)
3542 {
3543         struct ifnet *ifp = &sc->arpcom.ac_if;
3544         bus_size_t txmaxsz;
3545         int i, error;
3546
3547         /*
3548          * Allocate the parent bus DMA tag appropriate for PCI.
3549          *
3550          * All of the NetExtreme/NetLink controllers have 4GB boundary
3551          * DMA bug.
3552          * Whenever an address crosses a multiple of the 4GB boundary
3553          * (including 4GB, 8Gb, 12Gb, etc.) and makes the transition
3554          * from 0xX_FFFF_FFFF to 0x(X+1)_0000_0000 an internal DMA
3555          * state machine will lockup and cause the device to hang.
3556          */
3557         error = bus_dma_tag_create(NULL, 1, BGE_DMA_BOUNDARY_4G,
3558                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3559                                    NULL, NULL,
3560                                    BUS_SPACE_MAXSIZE_32BIT, 0,
3561                                    BUS_SPACE_MAXSIZE_32BIT,
3562                                    0, &sc->bnx_cdata.bnx_parent_tag);
3563         if (error) {
3564                 if_printf(ifp, "could not allocate parent dma tag\n");
3565                 return error;
3566         }
3567
3568         /*
3569          * Create DMA tag and maps for RX mbufs.
3570          */
3571         error = bus_dma_tag_create(sc->bnx_cdata.bnx_parent_tag, 1, 0,
3572                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3573                                    NULL, NULL, MCLBYTES, 1, MCLBYTES,
3574                                    BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK,
3575                                    &sc->bnx_cdata.bnx_rx_mtag);
3576         if (error) {
3577                 if_printf(ifp, "could not allocate RX mbuf dma tag\n");
3578                 return error;
3579         }
3580
3581         error = bus_dmamap_create(sc->bnx_cdata.bnx_rx_mtag,
3582                                   BUS_DMA_WAITOK, &sc->bnx_cdata.bnx_rx_tmpmap);
3583         if (error) {
3584                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_rx_mtag);
3585                 sc->bnx_cdata.bnx_rx_mtag = NULL;
3586                 return error;
3587         }
3588
3589         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
3590                 error = bus_dmamap_create(sc->bnx_cdata.bnx_rx_mtag,
3591                                           BUS_DMA_WAITOK,
3592                                           &sc->bnx_cdata.bnx_rx_std_dmamap[i]);
3593                 if (error) {
3594                         int j;
3595
3596                         for (j = 0; j < i; ++j) {
3597                                 bus_dmamap_destroy(sc->bnx_cdata.bnx_rx_mtag,
3598                                         sc->bnx_cdata.bnx_rx_std_dmamap[j]);
3599                         }
3600                         bus_dma_tag_destroy(sc->bnx_cdata.bnx_rx_mtag);
3601                         sc->bnx_cdata.bnx_rx_mtag = NULL;
3602
3603                         if_printf(ifp, "could not create DMA map for RX\n");
3604                         return error;
3605                 }
3606         }
3607
3608         /*
3609          * Create DMA tag and maps for TX mbufs.
3610          */
3611         if (sc->bnx_flags & BNX_FLAG_TSO)
3612                 txmaxsz = IP_MAXPACKET + sizeof(struct ether_vlan_header);
3613         else
3614                 txmaxsz = BNX_JUMBO_FRAMELEN;
3615         error = bus_dma_tag_create(sc->bnx_cdata.bnx_parent_tag, 1, 0,
3616                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3617                                    NULL, NULL,
3618                                    txmaxsz, BNX_NSEG_NEW, PAGE_SIZE,
3619                                    BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK |
3620                                    BUS_DMA_ONEBPAGE,
3621                                    &sc->bnx_cdata.bnx_tx_mtag);
3622         if (error) {
3623                 if_printf(ifp, "could not allocate TX mbuf dma tag\n");
3624                 return error;
3625         }
3626
3627         for (i = 0; i < BGE_TX_RING_CNT; i++) {
3628                 error = bus_dmamap_create(sc->bnx_cdata.bnx_tx_mtag,
3629                                           BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE,
3630                                           &sc->bnx_cdata.bnx_tx_dmamap[i]);
3631                 if (error) {
3632                         int j;
3633
3634                         for (j = 0; j < i; ++j) {
3635                                 bus_dmamap_destroy(sc->bnx_cdata.bnx_tx_mtag,
3636                                         sc->bnx_cdata.bnx_tx_dmamap[j]);
3637                         }
3638                         bus_dma_tag_destroy(sc->bnx_cdata.bnx_tx_mtag);
3639                         sc->bnx_cdata.bnx_tx_mtag = NULL;
3640
3641                         if_printf(ifp, "could not create DMA map for TX\n");
3642                         return error;
3643                 }
3644         }
3645
3646         /*
3647          * Create DMA stuffs for standard RX ring.
3648          */
3649         error = bnx_dma_block_alloc(sc, BGE_STD_RX_RING_SZ,
3650                                     &sc->bnx_cdata.bnx_rx_std_ring_tag,
3651                                     &sc->bnx_cdata.bnx_rx_std_ring_map,
3652                                     (void *)&sc->bnx_ldata.bnx_rx_std_ring,
3653                                     &sc->bnx_ldata.bnx_rx_std_ring_paddr);
3654         if (error) {
3655                 if_printf(ifp, "could not create std RX ring\n");
3656                 return error;
3657         }
3658
3659         /*
3660          * Create jumbo buffer pool.
3661          */
3662         if (BNX_IS_JUMBO_CAPABLE(sc)) {
3663                 error = bnx_alloc_jumbo_mem(sc);
3664                 if (error) {
3665                         if_printf(ifp, "could not create jumbo buffer pool\n");
3666                         return error;
3667                 }
3668         }
3669
3670         /*
3671          * Create DMA stuffs for RX return ring.
3672          */
3673         error = bnx_dma_block_alloc(sc,
3674             BGE_RX_RTN_RING_SZ(sc->bnx_return_ring_cnt),
3675             &sc->bnx_cdata.bnx_rx_return_ring_tag,
3676             &sc->bnx_cdata.bnx_rx_return_ring_map,
3677             (void *)&sc->bnx_ldata.bnx_rx_return_ring,
3678             &sc->bnx_ldata.bnx_rx_return_ring_paddr);
3679         if (error) {
3680                 if_printf(ifp, "could not create RX ret ring\n");
3681                 return error;
3682         }
3683
3684         /*
3685          * Create DMA stuffs for TX ring.
3686          */
3687         error = bnx_dma_block_alloc(sc, BGE_TX_RING_SZ,
3688                                     &sc->bnx_cdata.bnx_tx_ring_tag,
3689                                     &sc->bnx_cdata.bnx_tx_ring_map,
3690                                     (void *)&sc->bnx_ldata.bnx_tx_ring,
3691                                     &sc->bnx_ldata.bnx_tx_ring_paddr);
3692         if (error) {
3693                 if_printf(ifp, "could not create TX ring\n");
3694                 return error;
3695         }
3696
3697         /*
3698          * Create DMA stuffs for status block.
3699          */
3700         error = bnx_dma_block_alloc(sc, BGE_STATUS_BLK_SZ,
3701                                     &sc->bnx_cdata.bnx_status_tag,
3702                                     &sc->bnx_cdata.bnx_status_map,
3703                                     (void *)&sc->bnx_ldata.bnx_status_block,
3704                                     &sc->bnx_ldata.bnx_status_block_paddr);
3705         if (error) {
3706                 if_printf(ifp, "could not create status block\n");
3707                 return error;
3708         }
3709
3710         return 0;
3711 }
3712
3713 static int
3714 bnx_dma_block_alloc(struct bnx_softc *sc, bus_size_t size, bus_dma_tag_t *tag,
3715                     bus_dmamap_t *map, void **addr, bus_addr_t *paddr)
3716 {
3717         bus_dmamem_t dmem;
3718         int error;
3719
3720         error = bus_dmamem_coherent(sc->bnx_cdata.bnx_parent_tag, PAGE_SIZE, 0,
3721                                     BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3722                                     size, BUS_DMA_WAITOK | BUS_DMA_ZERO, &dmem);
3723         if (error)
3724                 return error;
3725
3726         *tag = dmem.dmem_tag;
3727         *map = dmem.dmem_map;
3728         *addr = dmem.dmem_addr;
3729         *paddr = dmem.dmem_busaddr;
3730
3731         return 0;
3732 }
3733
3734 static void
3735 bnx_dma_block_free(bus_dma_tag_t tag, bus_dmamap_t map, void *addr)
3736 {
3737         if (tag != NULL) {
3738                 bus_dmamap_unload(tag, map);
3739                 bus_dmamem_free(tag, addr, map);
3740                 bus_dma_tag_destroy(tag);
3741         }
3742 }
3743
3744 static void
3745 bnx_tbi_link_upd(struct bnx_softc *sc, uint32_t status)
3746 {
3747         struct ifnet *ifp = &sc->arpcom.ac_if;
3748
3749 #define PCS_ENCODE_ERR  (BGE_MACSTAT_PORT_DECODE_ERROR|BGE_MACSTAT_MI_COMPLETE)
3750
3751         /*
3752          * Sometimes PCS encoding errors are detected in
3753          * TBI mode (on fiber NICs), and for some reason
3754          * the chip will signal them as link changes.
3755          * If we get a link change event, but the 'PCS
3756          * encoding error' bit in the MAC status register
3757          * is set, don't bother doing a link check.
3758          * This avoids spurious "gigabit link up" messages
3759          * that sometimes appear on fiber NICs during
3760          * periods of heavy traffic.
3761          */
3762         if (status & BGE_MACSTAT_TBI_PCS_SYNCHED) {
3763                 if (!sc->bnx_link) {
3764                         sc->bnx_link++;
3765                         if (sc->bnx_asicrev == BGE_ASICREV_BCM5704) {
3766                                 BNX_CLRBIT(sc, BGE_MAC_MODE,
3767                                     BGE_MACMODE_TBI_SEND_CFGS);
3768                         }
3769                         CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF);
3770
3771                         if (bootverbose)
3772                                 if_printf(ifp, "link UP\n");
3773
3774                         ifp->if_link_state = LINK_STATE_UP;
3775                         if_link_state_change(ifp);
3776                 }
3777         } else if ((status & PCS_ENCODE_ERR) != PCS_ENCODE_ERR) {
3778                 if (sc->bnx_link) {
3779                         sc->bnx_link = 0;
3780
3781                         if (bootverbose)
3782                                 if_printf(ifp, "link DOWN\n");
3783
3784                         ifp->if_link_state = LINK_STATE_DOWN;
3785                         if_link_state_change(ifp);
3786                 }
3787         }
3788
3789 #undef PCS_ENCODE_ERR
3790
3791         /* Clear the attention. */
3792         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3793             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3794             BGE_MACSTAT_LINK_CHANGED);
3795 }
3796
3797 static void
3798 bnx_copper_link_upd(struct bnx_softc *sc, uint32_t status __unused)
3799 {
3800         struct ifnet *ifp = &sc->arpcom.ac_if;
3801         struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3802
3803         mii_pollstat(mii);
3804         bnx_miibus_statchg(sc->bnx_dev);
3805
3806         if (bootverbose) {
3807                 if (sc->bnx_link)
3808                         if_printf(ifp, "link UP\n");
3809                 else
3810                         if_printf(ifp, "link DOWN\n");
3811         }
3812
3813         /* Clear the attention. */
3814         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3815             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3816             BGE_MACSTAT_LINK_CHANGED);
3817 }
3818
3819 static void
3820 bnx_autopoll_link_upd(struct bnx_softc *sc, uint32_t status __unused)
3821 {
3822         struct ifnet *ifp = &sc->arpcom.ac_if;
3823         struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3824
3825         mii_pollstat(mii);
3826
3827         if (!sc->bnx_link &&
3828             (mii->mii_media_status & IFM_ACTIVE) &&
3829             IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
3830                 sc->bnx_link++;
3831                 if (bootverbose)
3832                         if_printf(ifp, "link UP\n");
3833         } else if (sc->bnx_link &&
3834             (!(mii->mii_media_status & IFM_ACTIVE) ||
3835             IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) {
3836                 sc->bnx_link = 0;
3837                 if (bootverbose)
3838                         if_printf(ifp, "link DOWN\n");
3839         }
3840
3841         /* Clear the attention. */
3842         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3843             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3844             BGE_MACSTAT_LINK_CHANGED);
3845 }
3846
3847 static int
3848 bnx_sysctl_rx_coal_ticks(SYSCTL_HANDLER_ARGS)
3849 {
3850         struct bnx_softc *sc = arg1;
3851
3852         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3853             &sc->bnx_rx_coal_ticks,
3854             BNX_RX_COAL_TICKS_MIN, BNX_RX_COAL_TICKS_MAX,
3855             BNX_RX_COAL_TICKS_CHG);
3856 }
3857
3858 static int
3859 bnx_sysctl_tx_coal_ticks(SYSCTL_HANDLER_ARGS)
3860 {
3861         struct bnx_softc *sc = arg1;
3862
3863         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3864             &sc->bnx_tx_coal_ticks,
3865             BNX_TX_COAL_TICKS_MIN, BNX_TX_COAL_TICKS_MAX,
3866             BNX_TX_COAL_TICKS_CHG);
3867 }
3868
3869 static int
3870 bnx_sysctl_rx_coal_bds(SYSCTL_HANDLER_ARGS)
3871 {
3872         struct bnx_softc *sc = arg1;
3873
3874         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3875             &sc->bnx_rx_coal_bds,
3876             BNX_RX_COAL_BDS_MIN, BNX_RX_COAL_BDS_MAX,
3877             BNX_RX_COAL_BDS_CHG);
3878 }
3879
3880 static int
3881 bnx_sysctl_tx_coal_bds(SYSCTL_HANDLER_ARGS)
3882 {
3883         struct bnx_softc *sc = arg1;
3884
3885         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3886             &sc->bnx_tx_coal_bds,
3887             BNX_TX_COAL_BDS_MIN, BNX_TX_COAL_BDS_MAX,
3888             BNX_TX_COAL_BDS_CHG);
3889 }
3890
3891 static int
3892 bnx_sysctl_rx_coal_bds_int(SYSCTL_HANDLER_ARGS)
3893 {
3894         struct bnx_softc *sc = arg1;
3895
3896         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3897             &sc->bnx_rx_coal_bds_int,
3898             BNX_RX_COAL_BDS_MIN, BNX_RX_COAL_BDS_MAX,
3899             BNX_RX_COAL_BDS_INT_CHG);
3900 }
3901
3902 static int
3903 bnx_sysctl_tx_coal_bds_int(SYSCTL_HANDLER_ARGS)
3904 {
3905         struct bnx_softc *sc = arg1;
3906
3907         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3908             &sc->bnx_tx_coal_bds_int,
3909             BNX_TX_COAL_BDS_MIN, BNX_TX_COAL_BDS_MAX,
3910             BNX_TX_COAL_BDS_INT_CHG);
3911 }
3912
3913 static int
3914 bnx_sysctl_coal_chg(SYSCTL_HANDLER_ARGS, uint32_t *coal,
3915     int coal_min, int coal_max, uint32_t coal_chg_mask)
3916 {
3917         struct bnx_softc *sc = arg1;
3918         struct ifnet *ifp = &sc->arpcom.ac_if;
3919         int error = 0, v;
3920
3921         lwkt_serialize_enter(ifp->if_serializer);
3922
3923         v = *coal;
3924         error = sysctl_handle_int(oidp, &v, 0, req);
3925         if (!error && req->newptr != NULL) {
3926                 if (v < coal_min || v > coal_max) {
3927                         error = EINVAL;
3928                 } else {
3929                         *coal = v;
3930                         sc->bnx_coal_chg |= coal_chg_mask;
3931                 }
3932         }
3933
3934         lwkt_serialize_exit(ifp->if_serializer);
3935         return error;
3936 }
3937
3938 #ifdef IFPOLL_ENABLE
3939
3940 static int
3941 bnx_sysctl_npoll_stfrac(SYSCTL_HANDLER_ARGS)
3942 {
3943         struct bnx_softc *sc = arg1;
3944         struct ifnet *ifp = &sc->arpcom.ac_if;
3945         int error = 0, stfrac;
3946
3947         lwkt_serialize_enter(ifp->if_serializer);
3948
3949         stfrac = sc->bnx_npoll_stfrac;
3950         error = sysctl_handle_int(oidp, &stfrac, 0, req);
3951         if (!error && req->newptr != NULL) {
3952                 if (stfrac < 0) {
3953                         error = EINVAL;
3954                 } else {
3955                         sc->bnx_npoll_stfrac = stfrac;
3956                         if (sc->bnx_npoll_stcount > sc->bnx_npoll_stfrac)
3957                                 sc->bnx_npoll_stcount = sc->bnx_npoll_stfrac;
3958                 }
3959         }
3960
3961         lwkt_serialize_exit(ifp->if_serializer);
3962         return error;
3963 }
3964
3965 static int
3966 bnx_sysctl_npoll_cpuid(SYSCTL_HANDLER_ARGS)
3967 {
3968         struct bnx_softc *sc = arg1;
3969         struct ifnet *ifp = &sc->arpcom.ac_if;
3970         int error = 0, cpuid;
3971
3972         lwkt_serialize_enter(ifp->if_serializer);
3973
3974         cpuid = sc->bnx_npoll_cpuid;
3975         error = sysctl_handle_int(oidp, &cpuid, 0, req);
3976         if (!error && req->newptr != NULL) {
3977                 if (cpuid < 0 || cpuid >= ncpus2)
3978                         error = EINVAL;
3979                 else
3980                         sc->bnx_npoll_cpuid = cpuid;
3981         }
3982
3983         lwkt_serialize_exit(ifp->if_serializer);
3984         return error;
3985 }
3986
3987 #endif  /* IFPOLL_ENABLE */
3988
3989 static void
3990 bnx_coal_change(struct bnx_softc *sc)
3991 {
3992         struct ifnet *ifp = &sc->arpcom.ac_if;
3993         uint32_t val;
3994
3995         ASSERT_SERIALIZED(ifp->if_serializer);
3996
3997         if (sc->bnx_coal_chg & BNX_RX_COAL_TICKS_CHG) {
3998                 CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS,
3999                             sc->bnx_rx_coal_ticks);
4000                 DELAY(10);
4001                 val = CSR_READ_4(sc, BGE_HCC_RX_COAL_TICKS);
4002
4003                 if (bootverbose) {
4004                         if_printf(ifp, "rx_coal_ticks -> %u\n",
4005                                   sc->bnx_rx_coal_ticks);
4006                 }
4007         }
4008
4009         if (sc->bnx_coal_chg & BNX_TX_COAL_TICKS_CHG) {
4010                 CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS,
4011                             sc->bnx_tx_coal_ticks);
4012                 DELAY(10);
4013                 val = CSR_READ_4(sc, BGE_HCC_TX_COAL_TICKS);
4014
4015                 if (bootverbose) {
4016                         if_printf(ifp, "tx_coal_ticks -> %u\n",
4017                                   sc->bnx_tx_coal_ticks);
4018                 }
4019         }
4020
4021         if (sc->bnx_coal_chg & BNX_RX_COAL_BDS_CHG) {
4022                 CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS,
4023                             sc->bnx_rx_coal_bds);
4024                 DELAY(10);
4025                 val = CSR_READ_4(sc, BGE_HCC_RX_MAX_COAL_BDS);
4026
4027                 if (bootverbose) {
4028                         if_printf(ifp, "rx_coal_bds -> %u\n",
4029                                   sc->bnx_rx_coal_bds);
4030                 }
4031         }
4032
4033         if (sc->bnx_coal_chg & BNX_TX_COAL_BDS_CHG) {
4034                 CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS,
4035                             sc->bnx_tx_coal_bds);
4036                 DELAY(10);
4037                 val = CSR_READ_4(sc, BGE_HCC_TX_MAX_COAL_BDS);
4038
4039                 if (bootverbose) {
4040                         if_printf(ifp, "tx_coal_bds -> %u\n",
4041                                   sc->bnx_tx_coal_bds);
4042                 }
4043         }
4044
4045         if (sc->bnx_coal_chg & BNX_RX_COAL_BDS_INT_CHG) {
4046                 CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT,
4047                     sc->bnx_rx_coal_bds_int);
4048                 DELAY(10);
4049                 val = CSR_READ_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT);
4050
4051                 if (bootverbose) {
4052                         if_printf(ifp, "rx_coal_bds_int -> %u\n",
4053                             sc->bnx_rx_coal_bds_int);
4054                 }
4055         }
4056
4057         if (sc->bnx_coal_chg & BNX_TX_COAL_BDS_INT_CHG) {
4058                 CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT,
4059                     sc->bnx_tx_coal_bds_int);
4060                 DELAY(10);
4061                 val = CSR_READ_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT);
4062
4063                 if (bootverbose) {
4064                         if_printf(ifp, "tx_coal_bds_int -> %u\n",
4065                             sc->bnx_tx_coal_bds_int);
4066                 }
4067         }
4068
4069         sc->bnx_coal_chg = 0;
4070 }
4071
4072 static void
4073 bnx_intr_check(void *xsc)
4074 {
4075         struct bnx_softc *sc = xsc;
4076         struct ifnet *ifp = &sc->arpcom.ac_if;
4077         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
4078
4079         lwkt_serialize_enter(ifp->if_serializer);
4080
4081         KKASSERT(mycpuid == sc->bnx_intr_cpuid);
4082
4083         if ((ifp->if_flags & (IFF_RUNNING | IFF_NPOLLING)) != IFF_RUNNING) {
4084                 lwkt_serialize_exit(ifp->if_serializer);
4085                 return;
4086         }
4087
4088         if (sblk->bge_idx[0].bge_rx_prod_idx != sc->bnx_rx_saved_considx ||
4089             sblk->bge_idx[0].bge_tx_cons_idx != sc->bnx_tx_saved_considx) {
4090                 if (sc->bnx_rx_check_considx == sc->bnx_rx_saved_considx &&
4091                     sc->bnx_tx_check_considx == sc->bnx_tx_saved_considx) {
4092                         if (!sc->bnx_intr_maylose) {
4093                                 sc->bnx_intr_maylose = TRUE;
4094                                 goto done;
4095                         }
4096                         if (bootverbose)
4097                                 if_printf(ifp, "lost interrupt\n");
4098                         bnx_msi(sc);
4099                 }
4100         }
4101         sc->bnx_intr_maylose = FALSE;
4102         sc->bnx_rx_check_considx = sc->bnx_rx_saved_considx;
4103         sc->bnx_tx_check_considx = sc->bnx_tx_saved_considx;
4104
4105 done:
4106         callout_reset(&sc->bnx_intr_timer, BNX_INTR_CKINTVL,
4107             bnx_intr_check, sc);
4108         lwkt_serialize_exit(ifp->if_serializer);
4109 }
4110
4111 static void
4112 bnx_enable_intr(struct bnx_softc *sc)
4113 {
4114         struct ifnet *ifp = &sc->arpcom.ac_if;
4115
4116         lwkt_serialize_handler_enable(ifp->if_serializer);
4117
4118         /*
4119          * Enable interrupt.
4120          */
4121         bnx_writembx(sc, BGE_MBX_IRQ0_LO, sc->bnx_status_tag << 24);
4122         if (sc->bnx_flags & BNX_FLAG_ONESHOT_MSI) {
4123                 /* XXX Linux driver */
4124                 bnx_writembx(sc, BGE_MBX_IRQ0_LO, sc->bnx_status_tag << 24);
4125         }
4126
4127         /*
4128          * Unmask the interrupt when we stop polling.
4129          */
4130         PCI_CLRBIT(sc->bnx_dev, BGE_PCI_MISC_CTL,
4131             BGE_PCIMISCCTL_MASK_PCI_INTR, 4);
4132
4133         /*
4134          * Trigger another interrupt, since above writing
4135          * to interrupt mailbox0 may acknowledge pending
4136          * interrupt.
4137          */
4138         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_SET);
4139
4140         if (sc->bnx_flags & BNX_FLAG_STATUSTAG_BUG) {
4141                 sc->bnx_intr_maylose = FALSE;
4142                 sc->bnx_rx_check_considx = 0;
4143                 sc->bnx_tx_check_considx = 0;
4144
4145                 if (bootverbose)
4146                         if_printf(ifp, "status tag bug workaround\n");
4147
4148                 /* 10ms check interval */
4149                 callout_reset_bycpu(&sc->bnx_intr_timer, BNX_INTR_CKINTVL,
4150                     bnx_intr_check, sc, sc->bnx_intr_cpuid);
4151         }
4152 }
4153
4154 static void
4155 bnx_disable_intr(struct bnx_softc *sc)
4156 {
4157         struct ifnet *ifp = &sc->arpcom.ac_if;
4158
4159         /*
4160          * Mask the interrupt when we start polling.
4161          */
4162         PCI_SETBIT(sc->bnx_dev, BGE_PCI_MISC_CTL,
4163             BGE_PCIMISCCTL_MASK_PCI_INTR, 4);
4164
4165         /*
4166          * Acknowledge possible asserted interrupt.
4167          */
4168         bnx_writembx(sc, BGE_MBX_IRQ0_LO, 1);
4169
4170         callout_stop(&sc->bnx_intr_timer);
4171         sc->bnx_intr_maylose = FALSE;
4172         sc->bnx_rx_check_considx = 0;
4173         sc->bnx_tx_check_considx = 0;
4174
4175         sc->bnx_npoll_stcount = 0;
4176
4177         lwkt_serialize_handler_disable(ifp->if_serializer);
4178 }
4179
4180 static int
4181 bnx_get_eaddr_mem(struct bnx_softc *sc, uint8_t ether_addr[])
4182 {
4183         uint32_t mac_addr;
4184         int ret = 1;
4185
4186         mac_addr = bnx_readmem_ind(sc, 0x0c14);
4187         if ((mac_addr >> 16) == 0x484b) {
4188                 ether_addr[0] = (uint8_t)(mac_addr >> 8);
4189                 ether_addr[1] = (uint8_t)mac_addr;
4190                 mac_addr = bnx_readmem_ind(sc, 0x0c18);
4191                 ether_addr[2] = (uint8_t)(mac_addr >> 24);
4192                 ether_addr[3] = (uint8_t)(mac_addr >> 16);
4193                 ether_addr[4] = (uint8_t)(mac_addr >> 8);
4194                 ether_addr[5] = (uint8_t)mac_addr;
4195                 ret = 0;
4196         }
4197         return ret;
4198 }
4199
4200 static int
4201 bnx_get_eaddr_nvram(struct bnx_softc *sc, uint8_t ether_addr[])
4202 {
4203         int mac_offset = BGE_EE_MAC_OFFSET;
4204
4205         if (BNX_IS_5717_PLUS(sc)) {
4206                 int f;
4207
4208                 f = pci_get_function(sc->bnx_dev);
4209                 if (f & 1)
4210                         mac_offset = BGE_EE_MAC_OFFSET_5717;
4211                 if (f > 1)
4212                         mac_offset += BGE_EE_MAC_OFFSET_5717_OFF;
4213         } else if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
4214                 mac_offset = BGE_EE_MAC_OFFSET_5906;
4215         }
4216
4217         return bnx_read_nvram(sc, ether_addr, mac_offset + 2, ETHER_ADDR_LEN);
4218 }
4219
4220 static int
4221 bnx_get_eaddr_eeprom(struct bnx_softc *sc, uint8_t ether_addr[])
4222 {
4223         if (sc->bnx_flags & BNX_FLAG_NO_EEPROM)
4224                 return 1;
4225
4226         return bnx_read_eeprom(sc, ether_addr, BGE_EE_MAC_OFFSET + 2,
4227                                ETHER_ADDR_LEN);
4228 }
4229
4230 static int
4231 bnx_get_eaddr(struct bnx_softc *sc, uint8_t eaddr[])
4232 {
4233         static const bnx_eaddr_fcn_t bnx_eaddr_funcs[] = {
4234                 /* NOTE: Order is critical */
4235                 bnx_get_eaddr_mem,
4236                 bnx_get_eaddr_nvram,
4237                 bnx_get_eaddr_eeprom,
4238                 NULL
4239         };
4240         const bnx_eaddr_fcn_t *func;
4241
4242         for (func = bnx_eaddr_funcs; *func != NULL; ++func) {
4243                 if ((*func)(sc, eaddr) == 0)
4244                         break;
4245         }
4246         return (*func == NULL ? ENXIO : 0);
4247 }
4248
4249 /*
4250  * NOTE: 'm' is not freed upon failure
4251  */
4252 struct mbuf *
4253 bnx_defrag_shortdma(struct mbuf *m)
4254 {
4255         struct mbuf *n;
4256         int found;
4257
4258         /*
4259          * If device receive two back-to-back send BDs with less than
4260          * or equal to 8 total bytes then the device may hang.  The two
4261          * back-to-back send BDs must in the same frame for this failure
4262          * to occur.  Scan mbuf chains and see whether two back-to-back
4263          * send BDs are there.  If this is the case, allocate new mbuf
4264          * and copy the frame to workaround the silicon bug.
4265          */
4266         for (n = m, found = 0; n != NULL; n = n->m_next) {
4267                 if (n->m_len < 8) {
4268                         found++;
4269                         if (found > 1)
4270                                 break;
4271                         continue;
4272                 }
4273                 found = 0;
4274         }
4275
4276         if (found > 1)
4277                 n = m_defrag(m, MB_DONTWAIT);
4278         else
4279                 n = m;
4280         return n;
4281 }
4282
4283 static void
4284 bnx_stop_block(struct bnx_softc *sc, bus_size_t reg, uint32_t bit)
4285 {
4286         int i;
4287
4288         BNX_CLRBIT(sc, reg, bit);
4289         for (i = 0; i < BNX_TIMEOUT; i++) {
4290                 if ((CSR_READ_4(sc, reg) & bit) == 0)
4291                         return;
4292                 DELAY(100);
4293         }
4294 }
4295
4296 static void
4297 bnx_link_poll(struct bnx_softc *sc)
4298 {
4299         uint32_t status;
4300
4301         status = CSR_READ_4(sc, BGE_MAC_STS);
4302         if ((status & sc->bnx_link_chg) || sc->bnx_link_evt) {
4303                 sc->bnx_link_evt = 0;
4304                 sc->bnx_link_upd(sc, status);
4305         }
4306 }
4307
4308 static void
4309 bnx_enable_msi(struct bnx_softc *sc)
4310 {
4311         uint32_t msi_mode;
4312
4313         msi_mode = CSR_READ_4(sc, BGE_MSI_MODE);
4314         msi_mode |= BGE_MSIMODE_ENABLE;
4315         if (sc->bnx_flags & BNX_FLAG_ONESHOT_MSI) {
4316                 /*
4317                  * NOTE:
4318                  * 5718-PG105-R says that "one shot" mode
4319                  * does not work if MSI is used, however,
4320                  * it obviously works.
4321                  */
4322                 msi_mode &= ~BGE_MSIMODE_ONESHOT_DISABLE;
4323         }
4324         CSR_WRITE_4(sc, BGE_MSI_MODE, msi_mode);
4325 }
4326
4327 static uint32_t
4328 bnx_dma_swap_options(struct bnx_softc *sc)
4329 {
4330         uint32_t dma_options;
4331
4332         dma_options = BGE_MODECTL_WORDSWAP_NONFRAME |
4333             BGE_MODECTL_BYTESWAP_DATA | BGE_MODECTL_WORDSWAP_DATA;
4334 #if BYTE_ORDER == BIG_ENDIAN
4335         dma_options |= BGE_MODECTL_BYTESWAP_NONFRAME;
4336 #endif
4337         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
4338                 dma_options |= BGE_MODECTL_BYTESWAP_B2HRX_DATA |
4339                     BGE_MODECTL_WORDSWAP_B2HRX_DATA | BGE_MODECTL_B2HRX_ENABLE |
4340                     BGE_MODECTL_HTX2B_ENABLE;
4341         }
4342         return dma_options;
4343 }
4344
4345 static int
4346 bnx_setup_tso(struct bnx_softc *sc, struct mbuf **mp,
4347     uint16_t *mss0, uint16_t *flags0)
4348 {
4349         struct mbuf *m;
4350         struct ip *ip;
4351         struct tcphdr *th;
4352         int thoff, iphlen, hoff, hlen;
4353         uint16_t flags, mss;
4354
4355         m = *mp;
4356         KASSERT(M_WRITABLE(m), ("TSO mbuf not writable"));
4357
4358         hoff = m->m_pkthdr.csum_lhlen;
4359         iphlen = m->m_pkthdr.csum_iphlen;
4360         thoff = m->m_pkthdr.csum_thlen;
4361
4362         KASSERT(hoff > 0, ("invalid ether header len"));
4363         KASSERT(iphlen > 0, ("invalid ip header len"));
4364         KASSERT(thoff > 0, ("invalid tcp header len"));
4365
4366         if (__predict_false(m->m_len < hoff + iphlen + thoff)) {
4367                 m = m_pullup(m, hoff + iphlen + thoff);
4368                 if (m == NULL) {
4369                         *mp = NULL;
4370                         return ENOBUFS;
4371                 }
4372                 *mp = m;
4373         }
4374         ip = mtodoff(m, struct ip *, hoff);
4375         th = mtodoff(m, struct tcphdr *, hoff + iphlen);
4376
4377         mss = m->m_pkthdr.tso_segsz;
4378         flags = BGE_TXBDFLAG_CPU_PRE_DMA | BGE_TXBDFLAG_CPU_POST_DMA;
4379
4380         ip->ip_len = htons(mss + iphlen + thoff);
4381         th->th_sum = 0;
4382
4383         hlen = (iphlen + thoff) >> 2;
4384         mss |= ((hlen & 0x3) << 14);
4385         flags |= ((hlen & 0xf8) << 7) | ((hlen & 0x4) << 2);
4386
4387         *mss0 = mss;
4388         *flags0 = flags;
4389
4390         return 0;
4391 }