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_polling.h"
  38
  39 #include <sys/param.h>
  40 #include <sys/bus.h>
  41 #include <sys/endian.h>
  42 #include <sys/kernel.h>
  43 #include <sys/interrupt.h>
  44 #include <sys/mbuf.h>
  45 #include <sys/malloc.h>
  46 #include <sys/queue.h>
  47 #include <sys/rman.h>
  48 #include <sys/serialize.h>
  49 #include <sys/socket.h>
  50 #include <sys/sockio.h>
  51 #include <sys/sysctl.h>
  52
  53 #include <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_types.h>
  63 #include <net/ifq_var.h>
  64 #include <net/vlan/if_vlan_var.h>
  65 #include <net/vlan/if_vlan_ether.h>
  66
  67 #include <dev/netif/mii_layer/mii.h>
  68 #include <dev/netif/mii_layer/miivar.h>
  69 #include <dev/netif/mii_layer/brgphyreg.h>
  70
  71 #include <bus/pci/pcidevs.h>
  72 #include <bus/pci/pcireg.h>
  73 #include <bus/pci/pcivar.h>
  74
  75 #include <dev/netif/bge/if_bgereg.h>
  76 #include <dev/netif/bnx/if_bnxvar.h>
  77
  78 /* "device miibus" required.  See GENERIC if you get errors here. */
  79 #include "miibus_if.h"
  80
  81 #define BNX_CSUM_FEATURES       (CSUM_IP | CSUM_TCP | CSUM_UDP)
  82
  83 #define BNX_INTR_CKINTVL        ((10 * hz) / 1000)      /* 10ms */
  84
  85 static const struct bnx_type {
  86         uint16_t                bnx_vid;
  87         uint16_t                bnx_did;
  88         char                    *bnx_name;
  89 } bnx_devs[] = {
  90         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5717,
  91                 "Broadcom BCM5717 Gigabit Ethernet" },
  92         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5718,
  93                 "Broadcom BCM5718 Gigabit Ethernet" },
  94         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5719,
  95                 "Broadcom BCM5719 Gigabit Ethernet" },
  96         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5720_ALT,
  97                 "Broadcom BCM5720 Gigabit Ethernet" },
  98
  99         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57761,
 100                 "Broadcom BCM57761 Gigabit Ethernet" },
 101         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57762,
 102                 "Broadcom BCM57762 Gigabit Ethernet" },
 103         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57765,
 104                 "Broadcom BCM57765 Gigabit Ethernet" },
 105         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57766,
 106                 "Broadcom BCM57766 Gigabit Ethernet" },
 107         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57781,
 108                 "Broadcom BCM57781 Gigabit Ethernet" },
 109         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57782,
 110                 "Broadcom BCM57782 Gigabit Ethernet" },
 111         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57785,
 112                 "Broadcom BCM57785 Gigabit Ethernet" },
 113         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57786,
 114                 "Broadcom BCM57786 Gigabit Ethernet" },
 115         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57791,
 116                 "Broadcom BCM57791 Fast Ethernet" },
 117         { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM57795,
 118                 "Broadcom BCM57795 Fast Ethernet" },
 119
 120         { 0, 0, NULL }
 121 };
 122
 123 #define BNX_IS_JUMBO_CAPABLE(sc)        ((sc)->bnx_flags & BNX_FLAG_JUMBO)
 124 #define BNX_IS_5717_PLUS(sc)            ((sc)->bnx_flags & BNX_FLAG_5717_PLUS)
 125 #define BNX_IS_57765_PLUS(sc)           ((sc)->bnx_flags & BNX_FLAG_57765_PLUS)
 126 #define BNX_IS_57765_FAMILY(sc)  \
 127         ((sc)->bnx_flags & BNX_FLAG_57765_FAMILY)
 128
 129 typedef int     (*bnx_eaddr_fcn_t)(struct bnx_softc *, uint8_t[]);
 130
 131 static int      bnx_probe(device_t);
 132 static int      bnx_attach(device_t);
 133 static int      bnx_detach(device_t);
 134 static void     bnx_shutdown(device_t);
 135 static int      bnx_suspend(device_t);
 136 static int      bnx_resume(device_t);
 137 static int      bnx_miibus_readreg(device_t, int, int);
 138 static int      bnx_miibus_writereg(device_t, int, int, int);
 139 static void     bnx_miibus_statchg(device_t);
 140
 141 #ifdef DEVICE_POLLING
 142 static void     bnx_poll(struct ifnet *ifp, enum poll_cmd cmd, int count);
 143 #endif
 144 static void     bnx_intr_legacy(void *);
 145 static void     bnx_msi(void *);
 146 static void     bnx_msi_oneshot(void *);
 147 static void     bnx_intr(struct bnx_softc *);
 148 static void     bnx_enable_intr(struct bnx_softc *);
 149 static void     bnx_disable_intr(struct bnx_softc *);
 150 static void     bnx_txeof(struct bnx_softc *, uint16_t);
 151 static void     bnx_rxeof(struct bnx_softc *, uint16_t);
 152
 153 static void     bnx_start(struct ifnet *);
 154 static int      bnx_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
 155 static void     bnx_init(void *);
 156 static void     bnx_stop(struct bnx_softc *);
 157 static void     bnx_watchdog(struct ifnet *);
 158 static int      bnx_ifmedia_upd(struct ifnet *);
 159 static void     bnx_ifmedia_sts(struct ifnet *, struct ifmediareq *);
 160 static void     bnx_tick(void *);
 161
 162 static int      bnx_alloc_jumbo_mem(struct bnx_softc *);
 163 static void     bnx_free_jumbo_mem(struct bnx_softc *);
 164 static struct bnx_jslot
 165                 *bnx_jalloc(struct bnx_softc *);
 166 static void     bnx_jfree(void *);
 167 static void     bnx_jref(void *);
 168 static int      bnx_newbuf_std(struct bnx_softc *, int, int);
 169 static int      bnx_newbuf_jumbo(struct bnx_softc *, int, int);
 170 static void     bnx_setup_rxdesc_std(struct bnx_softc *, int);
 171 static void     bnx_setup_rxdesc_jumbo(struct bnx_softc *, int);
 172 static int      bnx_init_rx_ring_std(struct bnx_softc *);
 173 static void     bnx_free_rx_ring_std(struct bnx_softc *);
 174 static int      bnx_init_rx_ring_jumbo(struct bnx_softc *);
 175 static void     bnx_free_rx_ring_jumbo(struct bnx_softc *);
 176 static void     bnx_free_tx_ring(struct bnx_softc *);
 177 static int      bnx_init_tx_ring(struct bnx_softc *);
 178 static int      bnx_dma_alloc(struct bnx_softc *);
 179 static void     bnx_dma_free(struct bnx_softc *);
 180 static int      bnx_dma_block_alloc(struct bnx_softc *, bus_size_t,
 181                     bus_dma_tag_t *, bus_dmamap_t *, void **, bus_addr_t *);
 182 static void     bnx_dma_block_free(bus_dma_tag_t, bus_dmamap_t, void *);
 183 static struct mbuf *
 184                 bnx_defrag_shortdma(struct mbuf *);
 185 static int      bnx_encap(struct bnx_softc *, struct mbuf **, uint32_t *);
 186 static int      bnx_setup_tso(struct bnx_softc *, struct mbuf **,
 187                     uint16_t *, uint16_t *);
 188
 189 static void     bnx_reset(struct bnx_softc *);
 190 static int      bnx_chipinit(struct bnx_softc *);
 191 static int      bnx_blockinit(struct bnx_softc *);
 192 static void     bnx_stop_block(struct bnx_softc *, bus_size_t, uint32_t);
 193 static void     bnx_enable_msi(struct bnx_softc *sc);
 194 static void     bnx_setmulti(struct bnx_softc *);
 195 static void     bnx_setpromisc(struct bnx_softc *);
 196 static void     bnx_stats_update_regs(struct bnx_softc *);
 197 static uint32_t bnx_dma_swap_options(struct bnx_softc *);
 198
 199 static uint32_t bnx_readmem_ind(struct bnx_softc *, uint32_t);
 200 static void     bnx_writemem_ind(struct bnx_softc *, uint32_t, uint32_t);
 201 #ifdef notdef
 202 static uint32_t bnx_readreg_ind(struct bnx_softc *, uint32_t);
 203 #endif
 204 static void     bnx_writereg_ind(struct bnx_softc *, uint32_t, uint32_t);
 205 static void     bnx_writemem_direct(struct bnx_softc *, uint32_t, uint32_t);
 206 static void     bnx_writembx(struct bnx_softc *, int, int);
 207 static uint8_t  bnx_nvram_getbyte(struct bnx_softc *, int, uint8_t *);
 208 static int      bnx_read_nvram(struct bnx_softc *, caddr_t, int, int);
 209 static uint8_t  bnx_eeprom_getbyte(struct bnx_softc *, uint32_t, uint8_t *);
 210 static int      bnx_read_eeprom(struct bnx_softc *, caddr_t, uint32_t, size_t);
 211
 212 static void     bnx_tbi_link_upd(struct bnx_softc *, uint32_t);
 213 static void     bnx_copper_link_upd(struct bnx_softc *, uint32_t);
 214 static void     bnx_autopoll_link_upd(struct bnx_softc *, uint32_t);
 215 static void     bnx_link_poll(struct bnx_softc *);
 216
 217 static int      bnx_get_eaddr_mem(struct bnx_softc *, uint8_t[]);
 218 static int      bnx_get_eaddr_nvram(struct bnx_softc *, uint8_t[]);
 219 static int      bnx_get_eaddr_eeprom(struct bnx_softc *, uint8_t[]);
 220 static int      bnx_get_eaddr(struct bnx_softc *, uint8_t[]);
 221
 222 static void     bnx_coal_change(struct bnx_softc *);
 223 static int      bnx_sysctl_rx_coal_ticks(SYSCTL_HANDLER_ARGS);
 224 static int      bnx_sysctl_tx_coal_ticks(SYSCTL_HANDLER_ARGS);
 225 static int      bnx_sysctl_rx_coal_bds(SYSCTL_HANDLER_ARGS);
 226 static int      bnx_sysctl_tx_coal_bds(SYSCTL_HANDLER_ARGS);
 227 static int      bnx_sysctl_rx_coal_bds_int(SYSCTL_HANDLER_ARGS);
 228 static int      bnx_sysctl_tx_coal_bds_int(SYSCTL_HANDLER_ARGS);
 229 static int      bnx_sysctl_coal_chg(SYSCTL_HANDLER_ARGS, uint32_t *,
 230                     int, int, uint32_t);
 231
 232 static int      bnx_msi_enable = 1;
 233 TUNABLE_INT("hw.bnx.msi.enable", &bnx_msi_enable);
 234
 235 static device_method_t bnx_methods[] = {
 236         /* Device interface */
 237         DEVMETHOD(device_probe,         bnx_probe),
 238         DEVMETHOD(device_attach,        bnx_attach),
 239         DEVMETHOD(device_detach,        bnx_detach),
 240         DEVMETHOD(device_shutdown,      bnx_shutdown),
 241         DEVMETHOD(device_suspend,       bnx_suspend),
 242         DEVMETHOD(device_resume,        bnx_resume),
 243
 244         /* bus interface */
 245         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 246         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
 247
 248         /* MII interface */
 249         DEVMETHOD(miibus_readreg,       bnx_miibus_readreg),
 250         DEVMETHOD(miibus_writereg,      bnx_miibus_writereg),
 251         DEVMETHOD(miibus_statchg,       bnx_miibus_statchg),
 252
 253         { 0, 0 }
 254 };
 255
 256 static DEFINE_CLASS_0(bnx, bnx_driver, bnx_methods, sizeof(struct bnx_softc));
 257 static devclass_t bnx_devclass;
 258
 259 DECLARE_DUMMY_MODULE(if_bnx);
 260 DRIVER_MODULE(if_bnx, pci, bnx_driver, bnx_devclass, NULL, NULL);
 261 DRIVER_MODULE(miibus, bnx, miibus_driver, miibus_devclass, NULL, NULL);
 262
 263 static uint32_t
 264 bnx_readmem_ind(struct bnx_softc *sc, uint32_t off)
 265 {
 266         device_t dev = sc->bnx_dev;
 267         uint32_t val;
 268
 269         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
 270             off >= BGE_STATS_BLOCK && off < BGE_SEND_RING_1_TO_4)
 271                 return 0;
 272
 273         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 274         val = pci_read_config(dev, BGE_PCI_MEMWIN_DATA, 4);
 275         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
 276         return (val);
 277 }
 278
 279 static void
 280 bnx_writemem_ind(struct bnx_softc *sc, uint32_t off, uint32_t val)
 281 {
 282         device_t dev = sc->bnx_dev;
 283
 284         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
 285             off >= BGE_STATS_BLOCK && off < BGE_SEND_RING_1_TO_4)
 286                 return;
 287
 288         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
 289         pci_write_config(dev, BGE_PCI_MEMWIN_DATA, val, 4);
 290         pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, 0, 4);
 291 }
 292
 293 #ifdef notdef
 294 static uint32_t
 295 bnx_readreg_ind(struct bnx_softc *sc, uin32_t off)
 296 {
 297         device_t dev = sc->bnx_dev;
 298
 299         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 300         return(pci_read_config(dev, BGE_PCI_REG_DATA, 4));
 301 }
 302 #endif
 303
 304 static void
 305 bnx_writereg_ind(struct bnx_softc *sc, uint32_t off, uint32_t val)
 306 {
 307         device_t dev = sc->bnx_dev;
 308
 309         pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
 310         pci_write_config(dev, BGE_PCI_REG_DATA, val, 4);
 311 }
 312
 313 static void
 314 bnx_writemem_direct(struct bnx_softc *sc, uint32_t off, uint32_t val)
 315 {
 316         CSR_WRITE_4(sc, off, val);
 317 }
 318
 319 static void
 320 bnx_writembx(struct bnx_softc *sc, int off, int val)
 321 {
 322         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906)
 323                 off += BGE_LPMBX_IRQ0_HI - BGE_MBX_IRQ0_HI;
 324
 325         CSR_WRITE_4(sc, off, val);
 326 }
 327
 328 static uint8_t
 329 bnx_nvram_getbyte(struct bnx_softc *sc, int addr, uint8_t *dest)
 330 {
 331         uint32_t access, byte = 0;
 332         int i;
 333
 334         /* Lock. */
 335         CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_SET1);
 336         for (i = 0; i < 8000; i++) {
 337                 if (CSR_READ_4(sc, BGE_NVRAM_SWARB) & BGE_NVRAMSWARB_GNT1)
 338                         break;
 339                 DELAY(20);
 340         }
 341         if (i == 8000)
 342                 return (1);
 343
 344         /* Enable access. */
 345         access = CSR_READ_4(sc, BGE_NVRAM_ACCESS);
 346         CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access | BGE_NVRAMACC_ENABLE);
 347
 348         CSR_WRITE_4(sc, BGE_NVRAM_ADDR, addr & 0xfffffffc);
 349         CSR_WRITE_4(sc, BGE_NVRAM_CMD, BGE_NVRAM_READCMD);
 350         for (i = 0; i < BNX_TIMEOUT * 10; i++) {
 351                 DELAY(10);
 352                 if (CSR_READ_4(sc, BGE_NVRAM_CMD) & BGE_NVRAMCMD_DONE) {
 353                         DELAY(10);
 354                         break;
 355                 }
 356         }
 357
 358         if (i == BNX_TIMEOUT * 10) {
 359                 if_printf(&sc->arpcom.ac_if, "nvram read timed out\n");
 360                 return (1);
 361         }
 362
 363         /* Get result. */
 364         byte = CSR_READ_4(sc, BGE_NVRAM_RDDATA);
 365
 366         *dest = (bswap32(byte) >> ((addr % 4) * 8)) & 0xFF;
 367
 368         /* Disable access. */
 369         CSR_WRITE_4(sc, BGE_NVRAM_ACCESS, access);
 370
 371         /* Unlock. */
 372         CSR_WRITE_4(sc, BGE_NVRAM_SWARB, BGE_NVRAMSWARB_CLR1);
 373         CSR_READ_4(sc, BGE_NVRAM_SWARB);
 374
 375         return (0);
 376 }
 377
 378 /*
 379  * Read a sequence of bytes from NVRAM.
 380  */
 381 static int
 382 bnx_read_nvram(struct bnx_softc *sc, caddr_t dest, int off, int cnt)
 383 {
 384         int err = 0, i;
 385         uint8_t byte = 0;
 386
 387         if (sc->bnx_asicrev != BGE_ASICREV_BCM5906)
 388                 return (1);
 389
 390         for (i = 0; i < cnt; i++) {
 391                 err = bnx_nvram_getbyte(sc, off + i, &byte);
 392                 if (err)
 393                         break;
 394                 *(dest + i) = byte;
 395         }
 396
 397         return (err ? 1 : 0);
 398 }
 399
 400 /*
 401  * Read a byte of data stored in the EEPROM at address 'addr.' The
 402  * BCM570x supports both the traditional bitbang interface and an
 403  * auto access interface for reading the EEPROM. We use the auto
 404  * access method.
 405  */
 406 static uint8_t
 407 bnx_eeprom_getbyte(struct bnx_softc *sc, uint32_t addr, uint8_t *dest)
 408 {
 409         int i;
 410         uint32_t byte = 0;
 411
 412         /*
 413          * Enable use of auto EEPROM access so we can avoid
 414          * having to use the bitbang method.
 415          */
 416         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM);
 417
 418         /* Reset the EEPROM, load the clock period. */
 419         CSR_WRITE_4(sc, BGE_EE_ADDR,
 420             BGE_EEADDR_RESET|BGE_EEHALFCLK(BGE_HALFCLK_384SCL));
 421         DELAY(20);
 422
 423         /* Issue the read EEPROM command. */
 424         CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr);
 425
 426         /* Wait for completion */
 427         for(i = 0; i < BNX_TIMEOUT * 10; i++) {
 428                 DELAY(10);
 429                 if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE)
 430                         break;
 431         }
 432
 433         if (i == BNX_TIMEOUT) {
 434                 if_printf(&sc->arpcom.ac_if, "eeprom read timed out\n");
 435                 return(1);
 436         }
 437
 438         /* Get result. */
 439         byte = CSR_READ_4(sc, BGE_EE_DATA);
 440
 441         *dest = (byte >> ((addr % 4) * 8)) & 0xFF;
 442
 443         return(0);
 444 }
 445
 446 /*
 447  * Read a sequence of bytes from the EEPROM.
 448  */
 449 static int
 450 bnx_read_eeprom(struct bnx_softc *sc, caddr_t dest, uint32_t off, size_t len)
 451 {
 452         size_t i;
 453         int err;
 454         uint8_t byte;
 455
 456         for (byte = 0, err = 0, i = 0; i < len; i++) {
 457                 err = bnx_eeprom_getbyte(sc, off + i, &byte);
 458                 if (err)
 459                         break;
 460                 *(dest + i) = byte;
 461         }
 462
 463         return(err ? 1 : 0);
 464 }
 465
 466 static int
 467 bnx_miibus_readreg(device_t dev, int phy, int reg)
 468 {
 469         struct bnx_softc *sc = device_get_softc(dev);
 470         uint32_t val;
 471         int i;
 472
 473         KASSERT(phy == sc->bnx_phyno,
 474             ("invalid phyno %d, should be %d", phy, sc->bnx_phyno));
 475
 476         /* Clear the autopoll bit if set, otherwise may trigger PCI errors. */
 477         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 478                 CSR_WRITE_4(sc, BGE_MI_MODE,
 479                     sc->bnx_mi_mode & ~BGE_MIMODE_AUTOPOLL);
 480                 DELAY(80);
 481         }
 482
 483         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ | BGE_MICOMM_BUSY |
 484             BGE_MIPHY(phy) | BGE_MIREG(reg));
 485
 486         /* Poll for the PHY register access to complete. */
 487         for (i = 0; i < BNX_TIMEOUT; i++) {
 488                 DELAY(10);
 489                 val = CSR_READ_4(sc, BGE_MI_COMM);
 490                 if ((val & BGE_MICOMM_BUSY) == 0) {
 491                         DELAY(5);
 492                         val = CSR_READ_4(sc, BGE_MI_COMM);
 493                         break;
 494                 }
 495         }
 496         if (i == BNX_TIMEOUT) {
 497                 if_printf(&sc->arpcom.ac_if, "PHY read timed out "
 498                     "(phy %d, reg %d, val 0x%08x)\n", phy, reg, val);
 499                 val = 0;
 500         }
 501
 502         /* Restore the autopoll bit if necessary. */
 503         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 504                 CSR_WRITE_4(sc, BGE_MI_MODE, sc->bnx_mi_mode);
 505                 DELAY(80);
 506         }
 507
 508         if (val & BGE_MICOMM_READFAIL)
 509                 return 0;
 510
 511         return (val & 0xFFFF);
 512 }
 513
 514 static int
 515 bnx_miibus_writereg(device_t dev, int phy, int reg, int val)
 516 {
 517         struct bnx_softc *sc = device_get_softc(dev);
 518         int i;
 519
 520         KASSERT(phy == sc->bnx_phyno,
 521             ("invalid phyno %d, should be %d", phy, sc->bnx_phyno));
 522
 523         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
 524             (reg == BRGPHY_MII_1000CTL || reg == BRGPHY_MII_AUXCTL))
 525                return 0;
 526
 527         /* Clear the autopoll bit if set, otherwise may trigger PCI errors. */
 528         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 529                 CSR_WRITE_4(sc, BGE_MI_MODE,
 530                     sc->bnx_mi_mode & ~BGE_MIMODE_AUTOPOLL);
 531                 DELAY(80);
 532         }
 533
 534         CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE | BGE_MICOMM_BUSY |
 535             BGE_MIPHY(phy) | BGE_MIREG(reg) | val);
 536
 537         for (i = 0; i < BNX_TIMEOUT; i++) {
 538                 DELAY(10);
 539                 if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY)) {
 540                         DELAY(5);
 541                         CSR_READ_4(sc, BGE_MI_COMM); /* dummy read */
 542                         break;
 543                 }
 544         }
 545         if (i == BNX_TIMEOUT) {
 546                 if_printf(&sc->arpcom.ac_if, "PHY write timed out "
 547                     "(phy %d, reg %d, val %d)\n", phy, reg, val);
 548         }
 549
 550         /* Restore the autopoll bit if necessary. */
 551         if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
 552                 CSR_WRITE_4(sc, BGE_MI_MODE, sc->bnx_mi_mode);
 553                 DELAY(80);
 554         }
 555
 556         return 0;
 557 }
 558
 559 static void
 560 bnx_miibus_statchg(device_t dev)
 561 {
 562         struct bnx_softc *sc;
 563         struct mii_data *mii;
 564
 565         sc = device_get_softc(dev);
 566         mii = device_get_softc(sc->bnx_miibus);
 567
 568         if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
 569             (IFM_ACTIVE | IFM_AVALID)) {
 570                 switch (IFM_SUBTYPE(mii->mii_media_active)) {
 571                 case IFM_10_T:
 572                 case IFM_100_TX:
 573                         sc->bnx_link = 1;
 574                         break;
 575                 case IFM_1000_T:
 576                 case IFM_1000_SX:
 577                 case IFM_2500_SX:
 578                         if (sc->bnx_asicrev != BGE_ASICREV_BCM5906)
 579                                 sc->bnx_link = 1;
 580                         else
 581                                 sc->bnx_link = 0;
 582                         break;
 583                 default:
 584                         sc->bnx_link = 0;
 585                         break;
 586                 }
 587         } else {
 588                 sc->bnx_link = 0;
 589         }
 590         if (sc->bnx_link == 0)
 591                 return;
 592
 593         BNX_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE);
 594         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T ||
 595             IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) {
 596                 BNX_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII);
 597         } else {
 598                 BNX_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII);
 599         }
 600
 601         if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
 602                 BNX_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 603         } else {
 604                 BNX_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
 605         }
 606 }
 607
 608 /*
 609  * Memory management for jumbo frames.
 610  */
 611 static int
 612 bnx_alloc_jumbo_mem(struct bnx_softc *sc)
 613 {
 614         struct ifnet *ifp = &sc->arpcom.ac_if;
 615         struct bnx_jslot *entry;
 616         uint8_t *ptr;
 617         bus_addr_t paddr;
 618         int i, error;
 619
 620         /*
 621          * Create tag for jumbo mbufs.
 622          * This is really a bit of a kludge. We allocate a special
 623          * jumbo buffer pool which (thanks to the way our DMA
 624          * memory allocation works) will consist of contiguous
 625          * pages. This means that even though a jumbo buffer might
 626          * be larger than a page size, we don't really need to
 627          * map it into more than one DMA segment. However, the
 628          * default mbuf tag will result in multi-segment mappings,
 629          * so we have to create a special jumbo mbuf tag that
 630          * lets us get away with mapping the jumbo buffers as
 631          * a single segment. I think eventually the driver should
 632          * be changed so that it uses ordinary mbufs and cluster
 633          * buffers, i.e. jumbo frames can span multiple DMA
 634          * descriptors. But that's a project for another day.
 635          */
 636
 637         /*
 638          * Create DMA stuffs for jumbo RX ring.
 639          */
 640         error = bnx_dma_block_alloc(sc, BGE_JUMBO_RX_RING_SZ,
 641                                     &sc->bnx_cdata.bnx_rx_jumbo_ring_tag,
 642                                     &sc->bnx_cdata.bnx_rx_jumbo_ring_map,
 643                                     (void *)&sc->bnx_ldata.bnx_rx_jumbo_ring,
 644                                     &sc->bnx_ldata.bnx_rx_jumbo_ring_paddr);
 645         if (error) {
 646                 if_printf(ifp, "could not create jumbo RX ring\n");
 647                 return error;
 648         }
 649
 650         /*
 651          * Create DMA stuffs for jumbo buffer block.
 652          */
 653         error = bnx_dma_block_alloc(sc, BNX_JMEM,
 654                                     &sc->bnx_cdata.bnx_jumbo_tag,
 655                                     &sc->bnx_cdata.bnx_jumbo_map,
 656                                     (void **)&sc->bnx_ldata.bnx_jumbo_buf,
 657                                     &paddr);
 658         if (error) {
 659                 if_printf(ifp, "could not create jumbo buffer\n");
 660                 return error;
 661         }
 662
 663         SLIST_INIT(&sc->bnx_jfree_listhead);
 664
 665         /*
 666          * Now divide it up into 9K pieces and save the addresses
 667          * in an array. Note that we play an evil trick here by using
 668          * the first few bytes in the buffer to hold the the address
 669          * of the softc structure for this interface. This is because
 670          * bnx_jfree() needs it, but it is called by the mbuf management
 671          * code which will not pass it to us explicitly.
 672          */
 673         for (i = 0, ptr = sc->bnx_ldata.bnx_jumbo_buf; i < BNX_JSLOTS; i++) {
 674                 entry = &sc->bnx_cdata.bnx_jslots[i];
 675                 entry->bnx_sc = sc;
 676                 entry->bnx_buf = ptr;
 677                 entry->bnx_paddr = paddr;
 678                 entry->bnx_inuse = 0;
 679                 entry->bnx_slot = i;
 680                 SLIST_INSERT_HEAD(&sc->bnx_jfree_listhead, entry, jslot_link);
 681
 682                 ptr += BNX_JLEN;
 683                 paddr += BNX_JLEN;
 684         }
 685         return 0;
 686 }
 687
 688 static void
 689 bnx_free_jumbo_mem(struct bnx_softc *sc)
 690 {
 691         /* Destroy jumbo RX ring. */
 692         bnx_dma_block_free(sc->bnx_cdata.bnx_rx_jumbo_ring_tag,
 693                            sc->bnx_cdata.bnx_rx_jumbo_ring_map,
 694                            sc->bnx_ldata.bnx_rx_jumbo_ring);
 695
 696         /* Destroy jumbo buffer block. */
 697         bnx_dma_block_free(sc->bnx_cdata.bnx_jumbo_tag,
 698                            sc->bnx_cdata.bnx_jumbo_map,
 699                            sc->bnx_ldata.bnx_jumbo_buf);
 700 }
 701
 702 /*
 703  * Allocate a jumbo buffer.
 704  */
 705 static struct bnx_jslot *
 706 bnx_jalloc(struct bnx_softc *sc)
 707 {
 708         struct bnx_jslot *entry;
 709
 710         lwkt_serialize_enter(&sc->bnx_jslot_serializer);
 711         entry = SLIST_FIRST(&sc->bnx_jfree_listhead);
 712         if (entry) {
 713                 SLIST_REMOVE_HEAD(&sc->bnx_jfree_listhead, jslot_link);
 714                 entry->bnx_inuse = 1;
 715         } else {
 716                 if_printf(&sc->arpcom.ac_if, "no free jumbo buffers\n");
 717         }
 718         lwkt_serialize_exit(&sc->bnx_jslot_serializer);
 719         return(entry);
 720 }
 721
 722 /*
 723  * Adjust usage count on a jumbo buffer.
 724  */
 725 static void
 726 bnx_jref(void *arg)
 727 {
 728         struct bnx_jslot *entry = (struct bnx_jslot *)arg;
 729         struct bnx_softc *sc = entry->bnx_sc;
 730
 731         if (sc == NULL)
 732                 panic("bnx_jref: can't find softc pointer!");
 733
 734         if (&sc->bnx_cdata.bnx_jslots[entry->bnx_slot] != entry) {
 735                 panic("bnx_jref: asked to reference buffer "
 736                     "that we don't manage!");
 737         } else if (entry->bnx_inuse == 0) {
 738                 panic("bnx_jref: buffer already free!");
 739         } else {
 740                 atomic_add_int(&entry->bnx_inuse, 1);
 741         }
 742 }
 743
 744 /*
 745  * Release a jumbo buffer.
 746  */
 747 static void
 748 bnx_jfree(void *arg)
 749 {
 750         struct bnx_jslot *entry = (struct bnx_jslot *)arg;
 751         struct bnx_softc *sc = entry->bnx_sc;
 752
 753         if (sc == NULL)
 754                 panic("bnx_jfree: can't find softc pointer!");
 755
 756         if (&sc->bnx_cdata.bnx_jslots[entry->bnx_slot] != entry) {
 757                 panic("bnx_jfree: asked to free buffer that we don't manage!");
 758         } else if (entry->bnx_inuse == 0) {
 759                 panic("bnx_jfree: buffer already free!");
 760         } else {
 761                 /*
 762                  * Possible MP race to 0, use the serializer.  The atomic insn
 763                  * is still needed for races against bnx_jref().
 764                  */
 765                 lwkt_serialize_enter(&sc->bnx_jslot_serializer);
 766                 atomic_subtract_int(&entry->bnx_inuse, 1);
 767                 if (entry->bnx_inuse == 0) {
 768                         SLIST_INSERT_HEAD(&sc->bnx_jfree_listhead,
 769                                           entry, jslot_link);
 770                 }
 771                 lwkt_serialize_exit(&sc->bnx_jslot_serializer);
 772         }
 773 }
 774
 775
 776 /*
 777  * Intialize a standard receive ring descriptor.
 778  */
 779 static int
 780 bnx_newbuf_std(struct bnx_softc *sc, int i, int init)
 781 {
 782         struct mbuf *m_new = NULL;
 783         bus_dma_segment_t seg;
 784         bus_dmamap_t map;
 785         int error, nsegs;
 786
 787         m_new = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
 788         if (m_new == NULL)
 789                 return ENOBUFS;
 790         m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
 791         m_adj(m_new, ETHER_ALIGN);
 792
 793         error = bus_dmamap_load_mbuf_segment(sc->bnx_cdata.bnx_rx_mtag,
 794                         sc->bnx_cdata.bnx_rx_tmpmap, m_new,
 795                         &seg, 1, &nsegs, BUS_DMA_NOWAIT);
 796         if (error) {
 797                 m_freem(m_new);
 798                 return error;
 799         }
 800
 801         if (!init) {
 802                 bus_dmamap_sync(sc->bnx_cdata.bnx_rx_mtag,
 803                                 sc->bnx_cdata.bnx_rx_std_dmamap[i],
 804                                 BUS_DMASYNC_POSTREAD);
 805                 bus_dmamap_unload(sc->bnx_cdata.bnx_rx_mtag,
 806                         sc->bnx_cdata.bnx_rx_std_dmamap[i]);
 807         }
 808
 809         map = sc->bnx_cdata.bnx_rx_tmpmap;
 810         sc->bnx_cdata.bnx_rx_tmpmap = sc->bnx_cdata.bnx_rx_std_dmamap[i];
 811         sc->bnx_cdata.bnx_rx_std_dmamap[i] = map;
 812
 813         sc->bnx_cdata.bnx_rx_std_chain[i].bnx_mbuf = m_new;
 814         sc->bnx_cdata.bnx_rx_std_chain[i].bnx_paddr = seg.ds_addr;
 815
 816         bnx_setup_rxdesc_std(sc, i);
 817         return 0;
 818 }
 819
 820 static void
 821 bnx_setup_rxdesc_std(struct bnx_softc *sc, int i)
 822 {
 823         struct bnx_rxchain *rc;
 824         struct bge_rx_bd *r;
 825
 826         rc = &sc->bnx_cdata.bnx_rx_std_chain[i];
 827         r = &sc->bnx_ldata.bnx_rx_std_ring[i];
 828
 829         r->bge_addr.bge_addr_lo = BGE_ADDR_LO(rc->bnx_paddr);
 830         r->bge_addr.bge_addr_hi = BGE_ADDR_HI(rc->bnx_paddr);
 831         r->bge_len = rc->bnx_mbuf->m_len;
 832         r->bge_idx = i;
 833         r->bge_flags = BGE_RXBDFLAG_END;
 834 }
 835
 836 /*
 837  * Initialize a jumbo receive ring descriptor. This allocates
 838  * a jumbo buffer from the pool managed internally by the driver.
 839  */
 840 static int
 841 bnx_newbuf_jumbo(struct bnx_softc *sc, int i, int init)
 842 {
 843         struct mbuf *m_new = NULL;
 844         struct bnx_jslot *buf;
 845         bus_addr_t paddr;
 846
 847         /* Allocate the mbuf. */
 848         MGETHDR(m_new, init ? MB_WAIT : MB_DONTWAIT, MT_DATA);
 849         if (m_new == NULL)
 850                 return ENOBUFS;
 851
 852         /* Allocate the jumbo buffer */
 853         buf = bnx_jalloc(sc);
 854         if (buf == NULL) {
 855                 m_freem(m_new);
 856                 return ENOBUFS;
 857         }
 858
 859         /* Attach the buffer to the mbuf. */
 860         m_new->m_ext.ext_arg = buf;
 861         m_new->m_ext.ext_buf = buf->bnx_buf;
 862         m_new->m_ext.ext_free = bnx_jfree;
 863         m_new->m_ext.ext_ref = bnx_jref;
 864         m_new->m_ext.ext_size = BNX_JUMBO_FRAMELEN;
 865
 866         m_new->m_flags |= M_EXT;
 867
 868         m_new->m_data = m_new->m_ext.ext_buf;
 869         m_new->m_len = m_new->m_pkthdr.len = m_new->m_ext.ext_size;
 870
 871         paddr = buf->bnx_paddr;
 872         m_adj(m_new, ETHER_ALIGN);
 873         paddr += ETHER_ALIGN;
 874
 875         /* Save necessary information */
 876         sc->bnx_cdata.bnx_rx_jumbo_chain[i].bnx_mbuf = m_new;
 877         sc->bnx_cdata.bnx_rx_jumbo_chain[i].bnx_paddr = paddr;
 878
 879         /* Set up the descriptor. */
 880         bnx_setup_rxdesc_jumbo(sc, i);
 881         return 0;
 882 }
 883
 884 static void
 885 bnx_setup_rxdesc_jumbo(struct bnx_softc *sc, int i)
 886 {
 887         struct bge_rx_bd *r;
 888         struct bnx_rxchain *rc;
 889
 890         r = &sc->bnx_ldata.bnx_rx_jumbo_ring[i];
 891         rc = &sc->bnx_cdata.bnx_rx_jumbo_chain[i];
 892
 893         r->bge_addr.bge_addr_lo = BGE_ADDR_LO(rc->bnx_paddr);
 894         r->bge_addr.bge_addr_hi = BGE_ADDR_HI(rc->bnx_paddr);
 895         r->bge_len = rc->bnx_mbuf->m_len;
 896         r->bge_idx = i;
 897         r->bge_flags = BGE_RXBDFLAG_END|BGE_RXBDFLAG_JUMBO_RING;
 898 }
 899
 900 static int
 901 bnx_init_rx_ring_std(struct bnx_softc *sc)
 902 {
 903         int i, error;
 904
 905         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
 906                 error = bnx_newbuf_std(sc, i, 1);
 907                 if (error)
 908                         return error;
 909         };
 910
 911         sc->bnx_std = BGE_STD_RX_RING_CNT - 1;
 912         bnx_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bnx_std);
 913
 914         return(0);
 915 }
 916
 917 static void
 918 bnx_free_rx_ring_std(struct bnx_softc *sc)
 919 {
 920         int i;
 921
 922         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
 923                 struct bnx_rxchain *rc = &sc->bnx_cdata.bnx_rx_std_chain[i];
 924
 925                 if (rc->bnx_mbuf != NULL) {
 926                         bus_dmamap_unload(sc->bnx_cdata.bnx_rx_mtag,
 927                                           sc->bnx_cdata.bnx_rx_std_dmamap[i]);
 928                         m_freem(rc->bnx_mbuf);
 929                         rc->bnx_mbuf = NULL;
 930                 }
 931                 bzero(&sc->bnx_ldata.bnx_rx_std_ring[i],
 932                     sizeof(struct bge_rx_bd));
 933         }
 934 }
 935
 936 static int
 937 bnx_init_rx_ring_jumbo(struct bnx_softc *sc)
 938 {
 939         struct bge_rcb *rcb;
 940         int i, error;
 941
 942         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 943                 error = bnx_newbuf_jumbo(sc, i, 1);
 944                 if (error)
 945                         return error;
 946         };
 947
 948         sc->bnx_jumbo = BGE_JUMBO_RX_RING_CNT - 1;
 949
 950         rcb = &sc->bnx_ldata.bnx_info.bnx_jumbo_rx_rcb;
 951         rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0, 0);
 952         CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
 953
 954         bnx_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bnx_jumbo);
 955
 956         return(0);
 957 }
 958
 959 static void
 960 bnx_free_rx_ring_jumbo(struct bnx_softc *sc)
 961 {
 962         int i;
 963
 964         for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
 965                 struct bnx_rxchain *rc = &sc->bnx_cdata.bnx_rx_jumbo_chain[i];
 966
 967                 if (rc->bnx_mbuf != NULL) {
 968                         m_freem(rc->bnx_mbuf);
 969                         rc->bnx_mbuf = NULL;
 970                 }
 971                 bzero(&sc->bnx_ldata.bnx_rx_jumbo_ring[i],
 972                     sizeof(struct bge_rx_bd));
 973         }
 974 }
 975
 976 static void
 977 bnx_free_tx_ring(struct bnx_softc *sc)
 978 {
 979         int i;
 980
 981         for (i = 0; i < BGE_TX_RING_CNT; i++) {
 982                 if (sc->bnx_cdata.bnx_tx_chain[i] != NULL) {
 983                         bus_dmamap_unload(sc->bnx_cdata.bnx_tx_mtag,
 984                                           sc->bnx_cdata.bnx_tx_dmamap[i]);
 985                         m_freem(sc->bnx_cdata.bnx_tx_chain[i]);
 986                         sc->bnx_cdata.bnx_tx_chain[i] = NULL;
 987                 }
 988                 bzero(&sc->bnx_ldata.bnx_tx_ring[i],
 989                     sizeof(struct bge_tx_bd));
 990         }
 991 }
 992
 993 static int
 994 bnx_init_tx_ring(struct bnx_softc *sc)
 995 {
 996         sc->bnx_txcnt = 0;
 997         sc->bnx_tx_saved_considx = 0;
 998         sc->bnx_tx_prodidx = 0;
 999
1000         /* Initialize transmit producer index for host-memory send ring. */
1001         bnx_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, sc->bnx_tx_prodidx);
1002         bnx_writembx(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
1003
1004         return(0);
1005 }
1006
1007 static void
1008 bnx_setmulti(struct bnx_softc *sc)
1009 {
1010         struct ifnet *ifp;
1011         struct ifmultiaddr *ifma;
1012         uint32_t hashes[4] = { 0, 0, 0, 0 };
1013         int h, i;
1014
1015         ifp = &sc->arpcom.ac_if;
1016
1017         if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
1018                 for (i = 0; i < 4; i++)
1019                         CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0xFFFFFFFF);
1020                 return;
1021         }
1022
1023         /* First, zot all the existing filters. */
1024         for (i = 0; i < 4; i++)
1025                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0);
1026
1027         /* Now program new ones. */
1028         TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
1029                 if (ifma->ifma_addr->sa_family != AF_LINK)
1030                         continue;
1031                 h = ether_crc32_le(
1032                     LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
1033                     ETHER_ADDR_LEN) & 0x7f;
1034                 hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F);
1035         }
1036
1037         for (i = 0; i < 4; i++)
1038                 CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]);
1039 }
1040
1041 /*
1042  * Do endian, PCI and DMA initialization. Also check the on-board ROM
1043  * self-test results.
1044  */
1045 static int
1046 bnx_chipinit(struct bnx_softc *sc)
1047 {
1048         uint32_t dma_rw_ctl, mode_ctl;
1049         int i;
1050
1051         /* Set endian type before we access any non-PCI registers. */
1052         pci_write_config(sc->bnx_dev, BGE_PCI_MISC_CTL,
1053             BGE_INIT | BGE_PCIMISCCTL_TAGGED_STATUS, 4);
1054
1055         /* Clear the MAC control register */
1056         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
1057
1058         /*
1059          * Clear the MAC statistics block in the NIC's
1060          * internal memory.
1061          */
1062         for (i = BGE_STATS_BLOCK;
1063             i < BGE_STATS_BLOCK_END + 1; i += sizeof(uint32_t))
1064                 BNX_MEMWIN_WRITE(sc, i, 0);
1065
1066         for (i = BGE_STATUS_BLOCK;
1067             i < BGE_STATUS_BLOCK_END + 1; i += sizeof(uint32_t))
1068                 BNX_MEMWIN_WRITE(sc, i, 0);
1069
1070         if (BNX_IS_57765_FAMILY(sc)) {
1071                 uint32_t val;
1072
1073                 if (sc->bnx_chipid == BGE_CHIPID_BCM57765_A0) {
1074                         mode_ctl = CSR_READ_4(sc, BGE_MODE_CTL);
1075                         val = mode_ctl & ~BGE_MODECTL_PCIE_PORTS;
1076
1077                         /* Access the lower 1K of PL PCI-E block registers. */
1078                         CSR_WRITE_4(sc, BGE_MODE_CTL,
1079                             val | BGE_MODECTL_PCIE_PL_SEL);
1080
1081                         val = CSR_READ_4(sc, BGE_PCIE_PL_LO_PHYCTL5);
1082                         val |= BGE_PCIE_PL_LO_PHYCTL5_DIS_L2CLKREQ;
1083                         CSR_WRITE_4(sc, BGE_PCIE_PL_LO_PHYCTL5, val);
1084
1085                         CSR_WRITE_4(sc, BGE_MODE_CTL, mode_ctl);
1086                 }
1087                 if (sc->bnx_chiprev != BGE_CHIPREV_57765_AX) {
1088                         mode_ctl = CSR_READ_4(sc, BGE_MODE_CTL);
1089                         val = mode_ctl & ~BGE_MODECTL_PCIE_PORTS;
1090
1091                         /* Access the lower 1K of DL PCI-E block registers. */
1092                         CSR_WRITE_4(sc, BGE_MODE_CTL,
1093                             val | BGE_MODECTL_PCIE_DL_SEL);
1094
1095                         val = CSR_READ_4(sc, BGE_PCIE_DL_LO_FTSMAX);
1096                         val &= ~BGE_PCIE_DL_LO_FTSMAX_MASK;
1097                         val |= BGE_PCIE_DL_LO_FTSMAX_VAL;
1098                         CSR_WRITE_4(sc, BGE_PCIE_DL_LO_FTSMAX, val);
1099
1100                         CSR_WRITE_4(sc, BGE_MODE_CTL, mode_ctl);
1101                 }
1102
1103                 val = CSR_READ_4(sc, BGE_CPMU_LSPD_10MB_CLK);
1104                 val &= ~BGE_CPMU_LSPD_10MB_MACCLK_MASK;
1105                 val |= BGE_CPMU_LSPD_10MB_MACCLK_6_25;
1106                 CSR_WRITE_4(sc, BGE_CPMU_LSPD_10MB_CLK, val);
1107         }
1108
1109         /*
1110          * Set up the PCI DMA control register.
1111          */
1112         dma_rw_ctl = pci_read_config(sc->bnx_dev, BGE_PCI_DMA_RW_CTL, 4);
1113         /*
1114          * Disable 32bytes cache alignment for DMA write to host memory
1115          *
1116          * NOTE:
1117          * 64bytes cache alignment for DMA write to host memory is still
1118          * enabled.
1119          */
1120         dma_rw_ctl |= BGE_PCIDMARWCTL_DIS_CACHE_ALIGNMENT;
1121         if (sc->bnx_chipid == BGE_CHIPID_BCM57765_A0)
1122                 dma_rw_ctl &= ~BGE_PCIDMARWCTL_CRDRDR_RDMA_MRRS_MSK;
1123         /*
1124          * Enable HW workaround for controllers that misinterpret
1125          * a status tag update and leave interrupts permanently
1126          * disabled.
1127          */
1128         if (sc->bnx_asicrev != BGE_ASICREV_BCM5717 &&
1129             !BNX_IS_57765_FAMILY(sc))
1130                 dma_rw_ctl |= BGE_PCIDMARWCTL_TAGGED_STATUS_WA;
1131         if (bootverbose) {
1132                 if_printf(&sc->arpcom.ac_if, "DMA read/write %#x\n",
1133                     dma_rw_ctl);
1134         }
1135         pci_write_config(sc->bnx_dev, BGE_PCI_DMA_RW_CTL, dma_rw_ctl, 4);
1136
1137         /*
1138          * Set up general mode register.
1139          */
1140         mode_ctl = bnx_dma_swap_options(sc) | BGE_MODECTL_MAC_ATTN_INTR |
1141             BGE_MODECTL_HOST_SEND_BDS | BGE_MODECTL_TX_NO_PHDR_CSUM;
1142         CSR_WRITE_4(sc, BGE_MODE_CTL, mode_ctl);
1143
1144         /*
1145          * Disable memory write invalidate.  Apparently it is not supported
1146          * properly by these devices.  Also ensure that INTx isn't disabled,
1147          * as these chips need it even when using MSI.
1148          */
1149         PCI_CLRBIT(sc->bnx_dev, BGE_PCI_CMD,
1150             (PCIM_CMD_MWRICEN | PCIM_CMD_INTxDIS), 4);
1151
1152         /* Set the timer prescaler (always 66Mhz) */
1153         CSR_WRITE_4(sc, BGE_MISC_CFG, 65 << 1/*BGE_32BITTIME_66MHZ*/);
1154
1155         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
1156                 DELAY(40);      /* XXX */
1157
1158                 /* Put PHY into ready state */
1159                 BNX_CLRBIT(sc, BGE_MISC_CFG, BGE_MISCCFG_EPHY_IDDQ);
1160                 CSR_READ_4(sc, BGE_MISC_CFG); /* Flush */
1161                 DELAY(40);
1162         }
1163
1164         return(0);
1165 }
1166
1167 static int
1168 bnx_blockinit(struct bnx_softc *sc)
1169 {
1170         struct bge_rcb *rcb;
1171         bus_size_t vrcb;
1172         bge_hostaddr taddr;
1173         uint32_t val;
1174         int i, limit;
1175
1176         /*
1177          * Initialize the memory window pointer register so that
1178          * we can access the first 32K of internal NIC RAM. This will
1179          * allow us to set up the TX send ring RCBs and the RX return
1180          * ring RCBs, plus other things which live in NIC memory.
1181          */
1182         CSR_WRITE_4(sc, BGE_PCI_MEMWIN_BASEADDR, 0);
1183
1184         /* Configure mbuf pool watermarks */
1185         if (BNX_IS_57765_PLUS(sc)) {
1186                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1187                 if (sc->arpcom.ac_if.if_mtu > ETHERMTU) {
1188                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x7e);
1189                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0xea);
1190                 } else {
1191                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x2a);
1192                         CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0xa0);
1193                 }
1194         } else if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
1195                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1196                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x04);
1197                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x10);
1198         } else {
1199                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
1200                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10);
1201                 CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
1202         }
1203
1204         /* Configure DMA resource watermarks */
1205         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5);
1206         CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10);
1207
1208         /* Enable buffer manager */
1209         val = BGE_BMANMODE_ENABLE | BGE_BMANMODE_LOMBUF_ATTN;
1210         /*
1211          * Change the arbitration algorithm of TXMBUF read request to
1212          * round-robin instead of priority based for BCM5719.  When
1213          * TXFIFO is almost empty, RDMA will hold its request until
1214          * TXFIFO is not almost empty.
1215          */
1216         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719)
1217                 val |= BGE_BMANMODE_NO_TX_UNDERRUN;
1218         if (sc->bnx_asicrev == BGE_ASICREV_BCM5717 ||
1219             sc->bnx_chipid == BGE_CHIPID_BCM5719_A0 ||
1220             sc->bnx_chipid == BGE_CHIPID_BCM5720_A0)
1221                 val |= BGE_BMANMODE_LOMBUF_ATTN;
1222         CSR_WRITE_4(sc, BGE_BMAN_MODE, val);
1223
1224         /* Poll for buffer manager start indication */
1225         for (i = 0; i < BNX_TIMEOUT; i++) {
1226                 if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE)
1227                         break;
1228                 DELAY(10);
1229         }
1230
1231         if (i == BNX_TIMEOUT) {
1232                 if_printf(&sc->arpcom.ac_if,
1233                           "buffer manager failed to start\n");
1234                 return(ENXIO);
1235         }
1236
1237         /* Enable flow-through queues */
1238         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
1239         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
1240
1241         /* Wait until queue initialization is complete */
1242         for (i = 0; i < BNX_TIMEOUT; i++) {
1243                 if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0)
1244                         break;
1245                 DELAY(10);
1246         }
1247
1248         if (i == BNX_TIMEOUT) {
1249                 if_printf(&sc->arpcom.ac_if,
1250                           "flow-through queue init failed\n");
1251                 return(ENXIO);
1252         }
1253
1254         /*
1255          * Summary of rings supported by the controller:
1256          *
1257          * Standard Receive Producer Ring
1258          * - This ring is used to feed receive buffers for "standard"
1259          *   sized frames (typically 1536 bytes) to the controller.
1260          *
1261          * Jumbo Receive Producer Ring
1262          * - This ring is used to feed receive buffers for jumbo sized
1263          *   frames (i.e. anything bigger than the "standard" frames)
1264          *   to the controller.
1265          *
1266          * Mini Receive Producer Ring
1267          * - This ring is used to feed receive buffers for "mini"
1268          *   sized frames to the controller.
1269          * - This feature required external memory for the controller
1270          *   but was never used in a production system.  Should always
1271          *   be disabled.
1272          *
1273          * Receive Return Ring
1274          * - After the controller has placed an incoming frame into a
1275          *   receive buffer that buffer is moved into a receive return
1276          *   ring.  The driver is then responsible to passing the
1277          *   buffer up to the stack.  Many versions of the controller
1278          *   support multiple RR rings.
1279          *
1280          * Send Ring
1281          * - This ring is used for outgoing frames.  Many versions of
1282          *   the controller support multiple send rings.
1283          */
1284
1285         /* Initialize the standard receive producer ring control block. */
1286         rcb = &sc->bnx_ldata.bnx_info.bnx_std_rx_rcb;
1287         rcb->bge_hostaddr.bge_addr_lo =
1288             BGE_ADDR_LO(sc->bnx_ldata.bnx_rx_std_ring_paddr);
1289         rcb->bge_hostaddr.bge_addr_hi =
1290             BGE_ADDR_HI(sc->bnx_ldata.bnx_rx_std_ring_paddr);
1291         if (BNX_IS_57765_PLUS(sc)) {
1292                 /*
1293                  * Bits 31-16: Programmable ring size (2048, 1024, 512, .., 32)
1294                  * Bits 15-2 : Maximum RX frame size
1295                  * Bit 1     : 1 = Ring Disabled, 0 = Ring ENabled
1296                  * Bit 0     : Reserved
1297                  */
1298                 rcb->bge_maxlen_flags =
1299                     BGE_RCB_MAXLEN_FLAGS(512, BNX_MAX_FRAMELEN << 2);
1300         } else {
1301                 /*
1302                  * Bits 31-16: Programmable ring size (512, 256, 128, 64, 32)
1303                  * Bits 15-2 : Reserved (should be 0)
1304                  * Bit 1     : 1 = Ring Disabled, 0 = Ring Enabled
1305                  * Bit 0     : Reserved
1306                  */
1307                 rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0);
1308         }
1309         if (BNX_IS_5717_PLUS(sc))
1310                 rcb->bge_nicaddr = BGE_STD_RX_RINGS_5717;
1311         else
1312                 rcb->bge_nicaddr = BGE_STD_RX_RINGS;
1313         /* Write the standard receive producer ring control block. */
1314         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi);
1315         CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo);
1316         CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
1317         CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr);
1318         /* Reset the standard receive producer ring producer index. */
1319         bnx_writembx(sc, BGE_MBX_RX_STD_PROD_LO, 0);
1320
1321         /*
1322          * Initialize the jumbo RX producer ring control
1323          * block.  We set the 'ring disabled' bit in the
1324          * flags field until we're actually ready to start
1325          * using this ring (i.e. once we set the MTU
1326          * high enough to require it).
1327          */
1328         if (BNX_IS_JUMBO_CAPABLE(sc)) {
1329                 rcb = &sc->bnx_ldata.bnx_info.bnx_jumbo_rx_rcb;
1330                 /* Get the jumbo receive producer ring RCB parameters. */
1331                 rcb->bge_hostaddr.bge_addr_lo =
1332                     BGE_ADDR_LO(sc->bnx_ldata.bnx_rx_jumbo_ring_paddr);
1333                 rcb->bge_hostaddr.bge_addr_hi =
1334                     BGE_ADDR_HI(sc->bnx_ldata.bnx_rx_jumbo_ring_paddr);
1335                 rcb->bge_maxlen_flags =
1336                     BGE_RCB_MAXLEN_FLAGS(BNX_MAX_FRAMELEN,
1337                     BGE_RCB_FLAG_RING_DISABLED);
1338                 if (BNX_IS_5717_PLUS(sc))
1339                         rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS_5717;
1340                 else
1341                         rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS;
1342                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI,
1343                     rcb->bge_hostaddr.bge_addr_hi);
1344                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO,
1345                     rcb->bge_hostaddr.bge_addr_lo);
1346                 /* Program the jumbo receive producer ring RCB parameters. */
1347                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS,
1348                     rcb->bge_maxlen_flags);
1349                 CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr);
1350                 /* Reset the jumbo receive producer ring producer index. */
1351                 bnx_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0);
1352         }
1353
1354         /* Choose de-pipeline mode for BCM5906 A0, A1 and A2. */
1355         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906 &&
1356             (sc->bnx_chipid == BGE_CHIPID_BCM5906_A0 ||
1357              sc->bnx_chipid == BGE_CHIPID_BCM5906_A1 ||
1358              sc->bnx_chipid == BGE_CHIPID_BCM5906_A2)) {
1359                 CSR_WRITE_4(sc, BGE_ISO_PKT_TX,
1360                     (CSR_READ_4(sc, BGE_ISO_PKT_TX) & ~3) | 2);
1361         }
1362
1363         /*
1364          * The BD ring replenish thresholds control how often the
1365          * hardware fetches new BD's from the producer rings in host
1366          * memory.  Setting the value too low on a busy system can
1367          * starve the hardware and recue the throughpout.
1368          *
1369          * Set the BD ring replentish thresholds. The recommended
1370          * values are 1/8th the number of descriptors allocated to
1371          * each ring.
1372          */
1373         val = 8;
1374         CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, val);
1375         if (BNX_IS_JUMBO_CAPABLE(sc)) {
1376                 CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH,
1377                     BGE_JUMBO_RX_RING_CNT/8);
1378         }
1379         if (BNX_IS_57765_PLUS(sc)) {
1380                 CSR_WRITE_4(sc, BGE_STD_REPLENISH_LWM, 32);
1381                 CSR_WRITE_4(sc, BGE_JMB_REPLENISH_LWM, 16);
1382         }
1383
1384         /*
1385          * Disable all send rings by setting the 'ring disabled' bit
1386          * in the flags field of all the TX send ring control blocks,
1387          * located in NIC memory.
1388          */
1389         if (BNX_IS_5717_PLUS(sc))
1390                 limit = 4;
1391         else if (BNX_IS_57765_FAMILY(sc))
1392                 limit = 2;
1393         else
1394                 limit = 1;
1395         vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
1396         for (i = 0; i < limit; i++) {
1397                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1398                     BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED));
1399                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1400                 vrcb += sizeof(struct bge_rcb);
1401         }
1402
1403         /* Configure send ring RCB 0 (we use only the first ring) */
1404         vrcb = BGE_MEMWIN_START + BGE_SEND_RING_RCB;
1405         BGE_HOSTADDR(taddr, sc->bnx_ldata.bnx_tx_ring_paddr);
1406         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
1407         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
1408         if (BNX_IS_5717_PLUS(sc)) {
1409                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, BGE_SEND_RING_5717);
1410         } else {
1411                 RCB_WRITE_4(sc, vrcb, bge_nicaddr,
1412                     BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT));
1413         }
1414         RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1415             BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0));
1416
1417         /*
1418          * Disable all receive return rings by setting the
1419          * 'ring disabled' bit in the flags field of all the receive
1420          * return ring control blocks, located in NIC memory.
1421          */
1422         if (BNX_IS_5717_PLUS(sc)) {
1423                 /* Should be 17, use 16 until we get an SRAM map. */
1424                 limit = 16;
1425         } else if (BNX_IS_57765_FAMILY(sc)) {
1426                 limit = 4;
1427         } else {
1428                 limit = 1;
1429         }
1430         /* Disable all receive return rings. */
1431         vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
1432         for (i = 0; i < limit; i++) {
1433                 RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, 0);
1434                 RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, 0);
1435                 RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1436                     BGE_RCB_FLAG_RING_DISABLED);
1437                 RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1438                 bnx_writembx(sc, BGE_MBX_RX_CONS0_LO +
1439                     (i * (sizeof(uint64_t))), 0);
1440                 vrcb += sizeof(struct bge_rcb);
1441         }
1442
1443         /*
1444          * Set up receive return ring 0.  Note that the NIC address
1445          * for RX return rings is 0x0.  The return rings live entirely
1446          * within the host, so the nicaddr field in the RCB isn't used.
1447          */
1448         vrcb = BGE_MEMWIN_START + BGE_RX_RETURN_RING_RCB;
1449         BGE_HOSTADDR(taddr, sc->bnx_ldata.bnx_rx_return_ring_paddr);
1450         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_hi, taddr.bge_addr_hi);
1451         RCB_WRITE_4(sc, vrcb, bge_hostaddr.bge_addr_lo, taddr.bge_addr_lo);
1452         RCB_WRITE_4(sc, vrcb, bge_nicaddr, 0);
1453         RCB_WRITE_4(sc, vrcb, bge_maxlen_flags,
1454             BGE_RCB_MAXLEN_FLAGS(sc->bnx_return_ring_cnt, 0));
1455
1456         /* Set random backoff seed for TX */
1457         CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
1458             sc->arpcom.ac_enaddr[0] + sc->arpcom.ac_enaddr[1] +
1459             sc->arpcom.ac_enaddr[2] + sc->arpcom.ac_enaddr[3] +
1460             sc->arpcom.ac_enaddr[4] + sc->arpcom.ac_enaddr[5] +
1461             BGE_TX_BACKOFF_SEED_MASK);
1462
1463         /* Set inter-packet gap */
1464         val = 0x2620;
1465         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1466                 val |= CSR_READ_4(sc, BGE_TX_LENGTHS) &
1467                     (BGE_TXLEN_JMB_FRM_LEN_MSK | BGE_TXLEN_CNT_DN_VAL_MSK);
1468         }
1469         CSR_WRITE_4(sc, BGE_TX_LENGTHS, val);
1470
1471         /*
1472          * Specify which ring to use for packets that don't match
1473          * any RX rules.
1474          */
1475         CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08);
1476
1477         /*
1478          * Configure number of RX lists. One interrupt distribution
1479          * list, sixteen active lists, one bad frames class.
1480          */
1481         CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181);
1482
1483         /* Inialize RX list placement stats mask. */
1484         CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF);
1485         CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1);
1486
1487         /* Disable host coalescing until we get it set up */
1488         CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000);
1489
1490         /* Poll to make sure it's shut down. */
1491         for (i = 0; i < BNX_TIMEOUT; i++) {
1492                 if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE))
1493                         break;
1494                 DELAY(10);
1495         }
1496
1497         if (i == BNX_TIMEOUT) {
1498                 if_printf(&sc->arpcom.ac_if,
1499                           "host coalescing engine failed to idle\n");
1500                 return(ENXIO);
1501         }
1502
1503         /* Set up host coalescing defaults */
1504         CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bnx_rx_coal_ticks);
1505         CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bnx_tx_coal_ticks);
1506         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bnx_rx_coal_bds);
1507         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bnx_tx_coal_bds);
1508         CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, sc->bnx_rx_coal_bds_int);
1509         CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, sc->bnx_tx_coal_bds_int);
1510
1511         /* Set up address of status block */
1512         bzero(sc->bnx_ldata.bnx_status_block, BGE_STATUS_BLK_SZ);
1513         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI,
1514             BGE_ADDR_HI(sc->bnx_ldata.bnx_status_block_paddr));
1515         CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO,
1516             BGE_ADDR_LO(sc->bnx_ldata.bnx_status_block_paddr));
1517
1518         /* Set up status block partail update size. */
1519         val = BGE_STATBLKSZ_32BYTE;
1520 #if 0
1521         /*
1522          * Does not seem to have visible effect in both
1523          * bulk data (1472B UDP datagram) and tiny data
1524          * (18B UDP datagram) TX tests.
1525          */
1526         val |= BGE_HCCMODE_CLRTICK_TX;
1527 #endif
1528         /* Turn on host coalescing state machine */
1529         CSR_WRITE_4(sc, BGE_HCC_MODE, val | BGE_HCCMODE_ENABLE);
1530
1531         /* Turn on RX BD completion state machine and enable attentions */
1532         CSR_WRITE_4(sc, BGE_RBDC_MODE,
1533             BGE_RBDCMODE_ENABLE|BGE_RBDCMODE_ATTN);
1534
1535         /* Turn on RX list placement state machine */
1536         CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
1537
1538         val = BGE_MACMODE_TXDMA_ENB | BGE_MACMODE_RXDMA_ENB |
1539             BGE_MACMODE_RX_STATS_CLEAR | BGE_MACMODE_TX_STATS_CLEAR |
1540             BGE_MACMODE_RX_STATS_ENB | BGE_MACMODE_TX_STATS_ENB |
1541             BGE_MACMODE_FRMHDR_DMA_ENB;
1542
1543         if (sc->bnx_flags & BNX_FLAG_TBI)
1544                 val |= BGE_PORTMODE_TBI;
1545         else if (sc->bnx_flags & BNX_FLAG_MII_SERDES)
1546                 val |= BGE_PORTMODE_GMII;
1547         else
1548                 val |= BGE_PORTMODE_MII;
1549
1550         /* Turn on DMA, clear stats */
1551         CSR_WRITE_4(sc, BGE_MAC_MODE, val);
1552
1553         /* Set misc. local control, enable interrupts on attentions */
1554         CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_ONATTN);
1555
1556 #ifdef notdef
1557         /* Assert GPIO pins for PHY reset */
1558         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0|
1559             BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUT2);
1560         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0|
1561             BGE_MLC_MISCIO_OUTEN1|BGE_MLC_MISCIO_OUTEN2);
1562 #endif
1563
1564         /* Turn on write DMA state machine */
1565         val = BGE_WDMAMODE_ENABLE|BGE_WDMAMODE_ALL_ATTNS;
1566         /* Enable host coalescing bug fix. */
1567         val |= BGE_WDMAMODE_STATUS_TAG_FIX;
1568         if (sc->bnx_asicrev == BGE_ASICREV_BCM5785) {
1569                 /* Request larger DMA burst size to get better performance. */
1570                 val |= BGE_WDMAMODE_BURST_ALL_DATA;
1571         }
1572         CSR_WRITE_4(sc, BGE_WDMA_MODE, val);
1573         DELAY(40);
1574
1575         if (BNX_IS_57765_PLUS(sc)) {
1576                 uint32_t dmactl;
1577
1578                 dmactl = CSR_READ_4(sc, BGE_RDMA_RSRVCTRL);
1579                 /*
1580                  * Adjust tx margin to prevent TX data corruption and
1581                  * fix internal FIFO overflow.
1582                  */
1583                 if (sc->bnx_asicrev == BGE_ASICREV_BCM5719 ||
1584                     sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1585                         dmactl &= ~(BGE_RDMA_RSRVCTRL_FIFO_LWM_MASK |
1586                             BGE_RDMA_RSRVCTRL_FIFO_HWM_MASK |
1587                             BGE_RDMA_RSRVCTRL_TXMRGN_MASK);
1588                         dmactl |= BGE_RDMA_RSRVCTRL_FIFO_LWM_1_5K |
1589                             BGE_RDMA_RSRVCTRL_FIFO_HWM_1_5K |
1590                             BGE_RDMA_RSRVCTRL_TXMRGN_320B;
1591                 }
1592                 /*
1593                  * Enable fix for read DMA FIFO overruns.
1594                  * The fix is to limit the number of RX BDs
1595                  * the hardware would fetch at a fime.
1596                  */
1597                 CSR_WRITE_4(sc, BGE_RDMA_RSRVCTRL,
1598                     dmactl | BGE_RDMA_RSRVCTRL_FIFO_OFLW_FIX);
1599         }
1600
1601         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719) {
1602                 CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL,
1603                     CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL) |
1604                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_4K |
1605                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K);
1606         } else if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1607                 /*
1608                  * Allow 4KB burst length reads for non-LSO frames.
1609                  * Enable 512B burst length reads for buffer descriptors.
1610                  */
1611                 CSR_WRITE_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL,
1612                     CSR_READ_4(sc, BGE_RDMA_LSO_CRPTEN_CTRL) |
1613                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_BD_512 |
1614                     BGE_RDMA_LSO_CRPTEN_CTRL_BLEN_LSO_4K);
1615         }
1616
1617         /* Turn on read DMA state machine */
1618         val = BGE_RDMAMODE_ENABLE | BGE_RDMAMODE_ALL_ATTNS;
1619         if (sc->bnx_asicrev == BGE_ASICREV_BCM5717)
1620                 val |= BGE_RDMAMODE_MULT_DMA_RD_DIS;
1621         if (sc->bnx_asicrev == BGE_ASICREV_BCM5784 ||
1622             sc->bnx_asicrev == BGE_ASICREV_BCM5785 ||
1623             sc->bnx_asicrev == BGE_ASICREV_BCM57780) {
1624                 val |= BGE_RDMAMODE_BD_SBD_CRPT_ATTN |
1625                     BGE_RDMAMODE_MBUF_RBD_CRPT_ATTN |
1626                     BGE_RDMAMODE_MBUF_SBD_CRPT_ATTN;
1627         }
1628         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
1629                 val |= CSR_READ_4(sc, BGE_RDMA_MODE) &
1630                     BGE_RDMAMODE_H2BNC_VLAN_DET;
1631                 /*
1632                  * Allow multiple outstanding read requests from
1633                  * non-LSO read DMA engine.
1634                  */
1635                 val &= ~BGE_RDMAMODE_MULT_DMA_RD_DIS;
1636         }
1637         if (sc->bnx_flags & BNX_FLAG_TSO)
1638                 val |= BGE_RDMAMODE_TSO4_ENABLE;
1639         val |= BGE_RDMAMODE_FIFO_LONG_BURST;
1640         CSR_WRITE_4(sc, BGE_RDMA_MODE, val);
1641         DELAY(40);
1642
1643         /* Turn on RX data completion state machine */
1644         CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
1645
1646         /* Turn on RX BD initiator state machine */
1647         CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
1648
1649         /* Turn on RX data and RX BD initiator state machine */
1650         CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE);
1651
1652         /* Turn on send BD completion state machine */
1653         CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
1654
1655         /* Turn on send data completion state machine */
1656         val = BGE_SDCMODE_ENABLE;
1657         if (sc->bnx_asicrev == BGE_ASICREV_BCM5761)
1658                 val |= BGE_SDCMODE_CDELAY;
1659         CSR_WRITE_4(sc, BGE_SDC_MODE, val);
1660
1661         /* Turn on send data initiator state machine */
1662         if (sc->bnx_flags & BNX_FLAG_TSO) {
1663                 CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE |
1664                     BGE_SDIMODE_HW_LSO_PRE_DMA);
1665         } else {
1666                 CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
1667         }
1668
1669         /* Turn on send BD initiator state machine */
1670         CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
1671
1672         /* Turn on send BD selector state machine */
1673         CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
1674
1675         CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF);
1676         CSR_WRITE_4(sc, BGE_SDI_STATS_CTL,
1677             BGE_SDISTATSCTL_ENABLE|BGE_SDISTATSCTL_FASTER);
1678
1679         /* ack/clear link change events */
1680         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1681             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1682             BGE_MACSTAT_LINK_CHANGED);
1683         CSR_WRITE_4(sc, BGE_MI_STS, 0);
1684
1685         /*
1686          * Enable attention when the link has changed state for
1687          * devices that use auto polling.
1688          */
1689         if (sc->bnx_flags & BNX_FLAG_TBI) {
1690                 CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK);
1691         } else {
1692                 if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
1693                         CSR_WRITE_4(sc, BGE_MI_MODE, sc->bnx_mi_mode);
1694                         DELAY(80);
1695                 }
1696         }
1697
1698         /*
1699          * Clear any pending link state attention.
1700          * Otherwise some link state change events may be lost until attention
1701          * is cleared by bnx_intr() -> bnx_softc.bnx_link_upd() sequence.
1702          * It's not necessary on newer BCM chips - perhaps enabling link
1703          * state change attentions implies clearing pending attention.
1704          */
1705         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
1706             BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
1707             BGE_MACSTAT_LINK_CHANGED);
1708
1709         /* Enable link state change attentions. */
1710         BNX_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED);
1711
1712         return(0);
1713 }
1714
1715 /*
1716  * Probe for a Broadcom chip. Check the PCI vendor and device IDs
1717  * against our list and return its name if we find a match. Note
1718  * that since the Broadcom controller contains VPD support, we
1719  * can get the device name string from the controller itself instead
1720  * of the compiled-in string. This is a little slow, but it guarantees
1721  * we'll always announce the right product name.
1722  */
1723 static int
1724 bnx_probe(device_t dev)
1725 {
1726         const struct bnx_type *t;
1727         uint16_t product, vendor;
1728
1729         if (!pci_is_pcie(dev))
1730                 return ENXIO;
1731
1732         product = pci_get_device(dev);
1733         vendor = pci_get_vendor(dev);
1734
1735         for (t = bnx_devs; t->bnx_name != NULL; t++) {
1736                 if (vendor == t->bnx_vid && product == t->bnx_did)
1737                         break;
1738         }
1739         if (t->bnx_name == NULL)
1740                 return ENXIO;
1741
1742         device_set_desc(dev, t->bnx_name);
1743         return 0;
1744 }
1745
1746 static int
1747 bnx_attach(device_t dev)
1748 {
1749         struct ifnet *ifp;
1750         struct bnx_softc *sc;
1751         uint32_t hwcfg = 0, misccfg;
1752         int error = 0, rid, capmask;
1753         uint8_t ether_addr[ETHER_ADDR_LEN];
1754         uint16_t product, vendor;
1755         driver_intr_t *intr_func;
1756         uintptr_t mii_priv = 0;
1757         u_int intr_flags;
1758 #ifdef BNX_TSO_DEBUG
1759         char desc[32];
1760         int i;
1761 #endif
1762
1763         sc = device_get_softc(dev);
1764         sc->bnx_dev = dev;
1765         callout_init_mp(&sc->bnx_stat_timer);
1766         callout_init_mp(&sc->bnx_intr_timer);
1767         lwkt_serialize_init(&sc->bnx_jslot_serializer);
1768
1769         product = pci_get_device(dev);
1770         vendor = pci_get_vendor(dev);
1771
1772 #ifndef BURN_BRIDGES
1773         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
1774                 uint32_t irq, mem;
1775
1776                 irq = pci_read_config(dev, PCIR_INTLINE, 4);
1777                 mem = pci_read_config(dev, BGE_PCI_BAR0, 4);
1778
1779                 device_printf(dev, "chip is in D%d power mode "
1780                     "-- setting to D0\n", pci_get_powerstate(dev));
1781
1782                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
1783
1784                 pci_write_config(dev, PCIR_INTLINE, irq, 4);
1785                 pci_write_config(dev, BGE_PCI_BAR0, mem, 4);
1786         }
1787 #endif  /* !BURN_BRIDGE */
1788
1789         /*
1790          * Map control/status registers.
1791          */
1792         pci_enable_busmaster(dev);
1793
1794         rid = BGE_PCI_BAR0;
1795         sc->bnx_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
1796             RF_ACTIVE);
1797
1798         if (sc->bnx_res == NULL) {
1799                 device_printf(dev, "couldn't map memory\n");
1800                 return ENXIO;
1801         }
1802
1803         sc->bnx_btag = rman_get_bustag(sc->bnx_res);
1804         sc->bnx_bhandle = rman_get_bushandle(sc->bnx_res);
1805
1806         /* Save various chip information */
1807         sc->bnx_chipid =
1808             pci_read_config(dev, BGE_PCI_MISC_CTL, 4) >>
1809             BGE_PCIMISCCTL_ASICREV_SHIFT;
1810         if (BGE_ASICREV(sc->bnx_chipid) == BGE_ASICREV_USE_PRODID_REG) {
1811                 /* All chips having dedicated ASICREV register have CPMU */
1812                 sc->bnx_flags |= BNX_FLAG_CPMU;
1813
1814                 switch (product) {
1815                 case PCI_PRODUCT_BROADCOM_BCM5717:
1816                 case PCI_PRODUCT_BROADCOM_BCM5718:
1817                 case PCI_PRODUCT_BROADCOM_BCM5719:
1818                 case PCI_PRODUCT_BROADCOM_BCM5720_ALT:
1819                         sc->bnx_chipid = pci_read_config(dev,
1820                             BGE_PCI_GEN2_PRODID_ASICREV, 4);
1821                         break;
1822
1823                 case PCI_PRODUCT_BROADCOM_BCM57761:
1824                 case PCI_PRODUCT_BROADCOM_BCM57762:
1825                 case PCI_PRODUCT_BROADCOM_BCM57765:
1826                 case PCI_PRODUCT_BROADCOM_BCM57766:
1827                 case PCI_PRODUCT_BROADCOM_BCM57781:
1828                 case PCI_PRODUCT_BROADCOM_BCM57782:
1829                 case PCI_PRODUCT_BROADCOM_BCM57785:
1830                 case PCI_PRODUCT_BROADCOM_BCM57786:
1831                 case PCI_PRODUCT_BROADCOM_BCM57791:
1832                 case PCI_PRODUCT_BROADCOM_BCM57795:
1833                         sc->bnx_chipid = pci_read_config(dev,
1834                             BGE_PCI_GEN15_PRODID_ASICREV, 4);
1835                         break;
1836
1837                 default:
1838                         sc->bnx_chipid = pci_read_config(dev,
1839                             BGE_PCI_PRODID_ASICREV, 4);
1840                         break;
1841                 }
1842         }
1843         sc->bnx_asicrev = BGE_ASICREV(sc->bnx_chipid);
1844         sc->bnx_chiprev = BGE_CHIPREV(sc->bnx_chipid);
1845
1846         switch (sc->bnx_asicrev) {
1847         case BGE_ASICREV_BCM5717:
1848         case BGE_ASICREV_BCM5719:
1849         case BGE_ASICREV_BCM5720:
1850                 sc->bnx_flags |= BNX_FLAG_5717_PLUS | BNX_FLAG_57765_PLUS;
1851                 break;
1852
1853         case BGE_ASICREV_BCM57765:
1854         case BGE_ASICREV_BCM57766:
1855                 sc->bnx_flags |= BNX_FLAG_57765_FAMILY | BNX_FLAG_57765_PLUS;
1856                 break;
1857         }
1858         sc->bnx_flags |= BNX_FLAG_SHORTDMA;
1859
1860         sc->bnx_flags |= BNX_FLAG_TSO;
1861         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719 &&
1862             sc->bnx_chipid == BGE_CHIPID_BCM5719_A0)
1863                 sc->bnx_flags &= ~BNX_FLAG_TSO;
1864
1865         if (sc->bnx_asicrev == BGE_ASICREV_BCM5717 ||
1866             BNX_IS_57765_FAMILY(sc)) {
1867                 /*
1868                  * All BCM57785 and BCM5718 families chips have a bug that
1869                  * under certain situation interrupt will not be enabled
1870                  * even if status tag is written to BGE_MBX_IRQ0_LO mailbox.
1871                  *
1872                  * While BCM5719 and BCM5720 have a hardware workaround
1873                  * which could fix the above bug.
1874                  * See the comment near BGE_PCIDMARWCTL_TAGGED_STATUS_WA in
1875                  * bnx_chipinit().
1876                  *
1877                  * For the rest of the chips in these two families, we will
1878                  * have to poll the status block at high rate (10ms currently)
1879                  * to check whether the interrupt is hosed or not.
1880                  * See bnx_intr_check() for details.
1881                  */
1882                 sc->bnx_flags |= BNX_FLAG_STATUSTAG_BUG;
1883         }
1884
1885         misccfg = CSR_READ_4(sc, BGE_MISC_CFG) & BGE_MISCCFG_BOARD_ID_MASK;
1886
1887         sc->bnx_pciecap = pci_get_pciecap_ptr(sc->bnx_dev);
1888         if (sc->bnx_asicrev == BGE_ASICREV_BCM5719 ||
1889             sc->bnx_asicrev == BGE_ASICREV_BCM5720)
1890                 pcie_set_max_readrq(dev, PCIEM_DEVCTL_MAX_READRQ_2048);
1891         else
1892                 pcie_set_max_readrq(dev, PCIEM_DEVCTL_MAX_READRQ_4096);
1893         device_printf(dev, "CHIP ID 0x%08x; "
1894                       "ASIC REV 0x%02x; CHIP REV 0x%02x\n",
1895                       sc->bnx_chipid, sc->bnx_asicrev, sc->bnx_chiprev);
1896
1897         /*
1898          * Set various PHY quirk flags.
1899          */
1900
1901         capmask = MII_CAPMASK_DEFAULT;
1902         if (product == PCI_PRODUCT_BROADCOM_BCM57791 ||
1903             product == PCI_PRODUCT_BROADCOM_BCM57795) {
1904                 /* 10/100 only */
1905                 capmask &= ~BMSR_EXTSTAT;
1906         }
1907
1908         mii_priv |= BRGPHY_FLAG_WIRESPEED;
1909
1910         /*
1911          * Allocate interrupt
1912          */
1913         sc->bnx_irq_type = pci_alloc_1intr(dev, bnx_msi_enable, &sc->bnx_irq_rid,
1914             &intr_flags);
1915
1916         sc->bnx_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->bnx_irq_rid,
1917             intr_flags);
1918         if (sc->bnx_irq == NULL) {
1919                 device_printf(dev, "couldn't map interrupt\n");
1920                 error = ENXIO;
1921                 goto fail;
1922         }
1923
1924         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI) {
1925                 sc->bnx_flags |= BNX_FLAG_ONESHOT_MSI;
1926                 bnx_enable_msi(sc);
1927         }
1928
1929         /* Initialize if_name earlier, so if_printf could be used */
1930         ifp = &sc->arpcom.ac_if;
1931         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1932
1933         /* Try to reset the chip. */
1934         bnx_reset(sc);
1935
1936         if (bnx_chipinit(sc)) {
1937                 device_printf(dev, "chip initialization failed\n");
1938                 error = ENXIO;
1939                 goto fail;
1940         }
1941
1942         /*
1943          * Get station address
1944          */
1945         error = bnx_get_eaddr(sc, ether_addr);
1946         if (error) {
1947                 device_printf(dev, "failed to read station address\n");
1948                 goto fail;
1949         }
1950
1951         if (BNX_IS_57765_PLUS(sc)) {
1952                 sc->bnx_return_ring_cnt = BGE_RETURN_RING_CNT;
1953         } else {
1954                 /* 5705/5750 limits RX return ring to 512 entries. */
1955                 sc->bnx_return_ring_cnt = BGE_RETURN_RING_CNT_5705;
1956         }
1957
1958         error = bnx_dma_alloc(sc);
1959         if (error)
1960                 goto fail;
1961
1962         /* Set default tuneable values. */
1963         sc->bnx_rx_coal_ticks = BNX_RX_COAL_TICKS_DEF;
1964         sc->bnx_tx_coal_ticks = BNX_TX_COAL_TICKS_DEF;
1965         sc->bnx_rx_coal_bds = BNX_RX_COAL_BDS_DEF;
1966         sc->bnx_tx_coal_bds = BNX_TX_COAL_BDS_DEF;
1967         sc->bnx_rx_coal_bds_int = BNX_RX_COAL_BDS_INT_DEF;
1968         sc->bnx_tx_coal_bds_int = BNX_TX_COAL_BDS_INT_DEF;
1969
1970         /* Set up ifnet structure */
1971         ifp->if_softc = sc;
1972         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1973         ifp->if_ioctl = bnx_ioctl;
1974         ifp->if_start = bnx_start;
1975 #ifdef DEVICE_POLLING
1976         ifp->if_poll = bnx_poll;
1977 #endif
1978         ifp->if_watchdog = bnx_watchdog;
1979         ifp->if_init = bnx_init;
1980         ifp->if_mtu = ETHERMTU;
1981         ifp->if_capabilities = IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
1982         ifq_set_maxlen(&ifp->if_snd, BGE_TX_RING_CNT - 1);
1983         ifq_set_ready(&ifp->if_snd);
1984
1985         ifp->if_capabilities |= IFCAP_HWCSUM;
1986         ifp->if_hwassist = BNX_CSUM_FEATURES;
1987         if (sc->bnx_flags & BNX_FLAG_TSO) {
1988                 ifp->if_capabilities |= IFCAP_TSO;
1989                 ifp->if_hwassist |= CSUM_TSO;
1990         }
1991         ifp->if_capenable = ifp->if_capabilities;
1992
1993         /*
1994          * Figure out what sort of media we have by checking the
1995          * hardware config word in the first 32k of NIC internal memory,
1996          * or fall back to examining the EEPROM if necessary.
1997          * Note: on some BCM5700 cards, this value appears to be unset.
1998          * If that's the case, we have to rely on identifying the NIC
1999          * by its PCI subsystem ID, as we do below for the SysKonnect
2000          * SK-9D41.
2001          */
2002         if (bnx_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER) {
2003                 hwcfg = bnx_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG);
2004         } else {
2005                 if (bnx_read_eeprom(sc, (caddr_t)&hwcfg, BGE_EE_HWCFG_OFFSET,
2006                                     sizeof(hwcfg))) {
2007                         device_printf(dev, "failed to read EEPROM\n");
2008                         error = ENXIO;
2009                         goto fail;
2010                 }
2011                 hwcfg = ntohl(hwcfg);
2012         }
2013
2014         /* The SysKonnect SK-9D41 is a 1000baseSX card. */
2015         if (pci_get_subvendor(dev) == PCI_PRODUCT_SCHNEIDERKOCH_SK_9D41 ||
2016             (hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER)
2017                 sc->bnx_flags |= BNX_FLAG_TBI;
2018
2019         /* Setup MI MODE */
2020         if (sc->bnx_flags & BNX_FLAG_CPMU)
2021                 sc->bnx_mi_mode = BGE_MIMODE_500KHZ_CONST;
2022         else
2023                 sc->bnx_mi_mode = BGE_MIMODE_BASE;
2024
2025         /* Setup link status update stuffs */
2026         if (sc->bnx_flags & BNX_FLAG_TBI) {
2027                 sc->bnx_link_upd = bnx_tbi_link_upd;
2028                 sc->bnx_link_chg = BGE_MACSTAT_LINK_CHANGED;
2029         } else if (sc->bnx_mi_mode & BGE_MIMODE_AUTOPOLL) {
2030                 sc->bnx_link_upd = bnx_autopoll_link_upd;
2031                 sc->bnx_link_chg = BGE_MACSTAT_LINK_CHANGED;
2032         } else {
2033                 sc->bnx_link_upd = bnx_copper_link_upd;
2034                 sc->bnx_link_chg = BGE_MACSTAT_LINK_CHANGED;
2035         }
2036
2037         /* Set default PHY address */
2038         sc->bnx_phyno = 1;
2039
2040         /*
2041          * PHY address mapping for various devices.
2042          *
2043          *          | F0 Cu | F0 Sr | F1 Cu | F1 Sr |
2044          * ---------+-------+-------+-------+-------+
2045          * BCM57XX  |   1   |   X   |   X   |   X   |
2046          * BCM5704  |   1   |   X   |   1   |   X   |
2047          * BCM5717  |   1   |   8   |   2   |   9   |
2048          * BCM5719  |   1   |   8   |   2   |   9   |
2049          * BCM5720  |   1   |   8   |   2   |   9   |
2050          *
2051          * Other addresses may respond but they are not
2052          * IEEE compliant PHYs and should be ignored.
2053          */
2054         if (BNX_IS_5717_PLUS(sc)) {
2055                 int f;
2056
2057                 f = pci_get_function(dev);
2058                 if (sc->bnx_chipid == BGE_CHIPID_BCM5717_A0) {
2059                         if (CSR_READ_4(sc, BGE_SGDIG_STS) &
2060                             BGE_SGDIGSTS_IS_SERDES)
2061                                 sc->bnx_phyno = f + 8;
2062                         else
2063                                 sc->bnx_phyno = f + 1;
2064                 } else {
2065                         if (CSR_READ_4(sc, BGE_CPMU_PHY_STRAP) &
2066                             BGE_CPMU_PHY_STRAP_IS_SERDES)
2067                                 sc->bnx_phyno = f + 8;
2068                         else
2069                                 sc->bnx_phyno = f + 1;
2070                 }
2071         }
2072
2073         if (sc->bnx_flags & BNX_FLAG_TBI) {
2074                 ifmedia_init(&sc->bnx_ifmedia, IFM_IMASK,
2075                     bnx_ifmedia_upd, bnx_ifmedia_sts);
2076                 ifmedia_add(&sc->bnx_ifmedia, IFM_ETHER|IFM_1000_SX, 0, NULL);
2077                 ifmedia_add(&sc->bnx_ifmedia,
2078                     IFM_ETHER|IFM_1000_SX|IFM_FDX, 0, NULL);
2079                 ifmedia_add(&sc->bnx_ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
2080                 ifmedia_set(&sc->bnx_ifmedia, IFM_ETHER|IFM_AUTO);
2081                 sc->bnx_ifmedia.ifm_media = sc->bnx_ifmedia.ifm_cur->ifm_media;
2082         } else {
2083                 struct mii_probe_args mii_args;
2084
2085                 mii_probe_args_init(&mii_args, bnx_ifmedia_upd, bnx_ifmedia_sts);
2086                 mii_args.mii_probemask = 1 << sc->bnx_phyno;
2087                 mii_args.mii_capmask = capmask;
2088                 mii_args.mii_privtag = MII_PRIVTAG_BRGPHY;
2089                 mii_args.mii_priv = mii_priv;
2090
2091                 error = mii_probe(dev, &sc->bnx_miibus, &mii_args);
2092                 if (error) {
2093                         device_printf(dev, "MII without any PHY!\n");
2094                         goto fail;
2095                 }
2096         }
2097
2098         /*
2099          * Create sysctl nodes.
2100          */
2101         sysctl_ctx_init(&sc->bnx_sysctl_ctx);
2102         sc->bnx_sysctl_tree = SYSCTL_ADD_NODE(&sc->bnx_sysctl_ctx,
2103                                               SYSCTL_STATIC_CHILDREN(_hw),
2104                                               OID_AUTO,
2105                                               device_get_nameunit(dev),
2106                                               CTLFLAG_RD, 0, "");
2107         if (sc->bnx_sysctl_tree == NULL) {
2108                 device_printf(dev, "can't add sysctl node\n");
2109                 error = ENXIO;
2110                 goto fail;
2111         }
2112
2113         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2114                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2115                         OID_AUTO, "rx_coal_ticks",
2116                         CTLTYPE_INT | CTLFLAG_RW,
2117                         sc, 0, bnx_sysctl_rx_coal_ticks, "I",
2118                         "Receive coalescing ticks (usec).");
2119         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2120                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2121                         OID_AUTO, "tx_coal_ticks",
2122                         CTLTYPE_INT | CTLFLAG_RW,
2123                         sc, 0, bnx_sysctl_tx_coal_ticks, "I",
2124                         "Transmit coalescing ticks (usec).");
2125         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2126                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2127                         OID_AUTO, "rx_coal_bds",
2128                         CTLTYPE_INT | CTLFLAG_RW,
2129                         sc, 0, bnx_sysctl_rx_coal_bds, "I",
2130                         "Receive max coalesced BD count.");
2131         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2132                         SYSCTL_CHILDREN(sc->bnx_sysctl_tree),
2133                         OID_AUTO, "tx_coal_bds",
2134                         CTLTYPE_INT | CTLFLAG_RW,
2135                         sc, 0, bnx_sysctl_tx_coal_bds, "I",
2136                         "Transmit max coalesced BD count.");
2137         /*
2138          * A common design characteristic for many Broadcom
2139          * client controllers is that they only support a
2140          * single outstanding DMA read operation on the PCIe
2141          * bus. This means that it will take twice as long to
2142          * fetch a TX frame that is split into header and
2143          * payload buffers as it does to fetch a single,
2144          * contiguous TX frame (2 reads vs. 1 read). For these
2145          * controllers, coalescing buffers to reduce the number
2146          * of memory reads is effective way to get maximum
2147          * performance(about 940Mbps).  Without collapsing TX
2148          * buffers the maximum TCP bulk transfer performance
2149          * is about 850Mbps. However forcing coalescing mbufs
2150          * consumes a lot of CPU cycles, so leave it off by
2151          * default.
2152          */
2153         SYSCTL_ADD_INT(&sc->bnx_sysctl_ctx,
2154             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2155             "force_defrag", CTLFLAG_RW, &sc->bnx_force_defrag, 0,
2156             "Force defragment on TX path");
2157
2158         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2159             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2160             "rx_coal_bds_int", CTLTYPE_INT | CTLFLAG_RW,
2161             sc, 0, bnx_sysctl_rx_coal_bds_int, "I",
2162             "Receive max coalesced BD count during interrupt.");
2163         SYSCTL_ADD_PROC(&sc->bnx_sysctl_ctx,
2164             SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2165             "tx_coal_bds_int", CTLTYPE_INT | CTLFLAG_RW,
2166             sc, 0, bnx_sysctl_tx_coal_bds_int, "I",
2167             "Transmit max coalesced BD count during interrupt.");
2168
2169 #ifdef BNX_TSO_DEBUG
2170         for (i = 0; i < BNX_TSO_NSTATS; ++i) {
2171                 ksnprintf(desc, sizeof(desc), "tso%d", i + 1);
2172                 SYSCTL_ADD_ULONG(&sc->bnx_sysctl_ctx,
2173                     SYSCTL_CHILDREN(sc->bnx_sysctl_tree), OID_AUTO,
2174                     desc, CTLFLAG_RW, &sc->bnx_tsosegs[i], "");
2175         }
2176 #endif
2177
2178         /*
2179          * Call MI attach routine.
2180          */
2181         ether_ifattach(ifp, ether_addr, NULL);
2182
2183         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI) {
2184                 if (sc->bnx_flags & BNX_FLAG_ONESHOT_MSI) {
2185                         intr_func = bnx_msi_oneshot;
2186                         if (bootverbose)
2187                                 device_printf(dev, "oneshot MSI\n");
2188                 } else {
2189                         intr_func = bnx_msi;
2190                 }
2191         } else {
2192                 intr_func = bnx_intr_legacy;
2193         }
2194         error = bus_setup_intr(dev, sc->bnx_irq, INTR_MPSAFE, intr_func, sc,
2195             &sc->bnx_intrhand, ifp->if_serializer);
2196         if (error) {
2197                 ether_ifdetach(ifp);
2198                 device_printf(dev, "couldn't set up irq\n");
2199                 goto fail;
2200         }
2201
2202         ifp->if_cpuid = rman_get_cpuid(sc->bnx_irq);
2203         KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
2204
2205         sc->bnx_stat_cpuid = ifp->if_cpuid;
2206         sc->bnx_intr_cpuid = ifp->if_cpuid;
2207
2208         return(0);
2209 fail:
2210         bnx_detach(dev);
2211         return(error);
2212 }
2213
2214 static int
2215 bnx_detach(device_t dev)
2216 {
2217         struct bnx_softc *sc = device_get_softc(dev);
2218
2219         if (device_is_attached(dev)) {
2220                 struct ifnet *ifp = &sc->arpcom.ac_if;
2221
2222                 lwkt_serialize_enter(ifp->if_serializer);
2223                 bnx_stop(sc);
2224                 bnx_reset(sc);
2225                 bus_teardown_intr(dev, sc->bnx_irq, sc->bnx_intrhand);
2226                 lwkt_serialize_exit(ifp->if_serializer);
2227
2228                 ether_ifdetach(ifp);
2229         }
2230
2231         if (sc->bnx_flags & BNX_FLAG_TBI)
2232                 ifmedia_removeall(&sc->bnx_ifmedia);
2233         if (sc->bnx_miibus)
2234                 device_delete_child(dev, sc->bnx_miibus);
2235         bus_generic_detach(dev);
2236
2237         if (sc->bnx_irq != NULL) {
2238                 bus_release_resource(dev, SYS_RES_IRQ, sc->bnx_irq_rid,
2239                     sc->bnx_irq);
2240         }
2241         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI)
2242                 pci_release_msi(dev);
2243
2244         if (sc->bnx_res != NULL) {
2245                 bus_release_resource(dev, SYS_RES_MEMORY,
2246                     BGE_PCI_BAR0, sc->bnx_res);
2247         }
2248
2249         if (sc->bnx_sysctl_tree != NULL)
2250                 sysctl_ctx_free(&sc->bnx_sysctl_ctx);
2251
2252         bnx_dma_free(sc);
2253
2254         return 0;
2255 }
2256
2257 static void
2258 bnx_reset(struct bnx_softc *sc)
2259 {
2260         device_t dev;
2261         uint32_t cachesize, command, pcistate, reset;
2262         void (*write_op)(struct bnx_softc *, uint32_t, uint32_t);
2263         int i, val = 0;
2264         uint16_t devctl;
2265
2266         dev = sc->bnx_dev;
2267
2268         if (sc->bnx_asicrev != BGE_ASICREV_BCM5906)
2269                 write_op = bnx_writemem_direct;
2270         else
2271                 write_op = bnx_writereg_ind;
2272
2273         /* Save some important PCI state. */
2274         cachesize = pci_read_config(dev, BGE_PCI_CACHESZ, 4);
2275         command = pci_read_config(dev, BGE_PCI_CMD, 4);
2276         pcistate = pci_read_config(dev, BGE_PCI_PCISTATE, 4);
2277
2278         pci_write_config(dev, BGE_PCI_MISC_CTL,
2279             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2280             BGE_HIF_SWAP_OPTIONS|BGE_PCIMISCCTL_PCISTATE_RW|
2281             BGE_PCIMISCCTL_TAGGED_STATUS, 4);
2282
2283         /* Disable fastboot on controllers that support it. */
2284         if (bootverbose)
2285                 if_printf(&sc->arpcom.ac_if, "Disabling fastboot\n");
2286         CSR_WRITE_4(sc, BGE_FASTBOOT_PC, 0x0);
2287
2288         /*
2289          * Write the magic number to SRAM at offset 0xB50.
2290          * When firmware finishes its initialization it will
2291          * write ~BGE_MAGIC_NUMBER to the same location.
2292          */
2293         bnx_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER);
2294
2295         reset = BGE_MISCCFG_RESET_CORE_CLOCKS|(65<<1);
2296
2297         /* XXX: Broadcom Linux driver. */
2298         /* Force PCI-E 1.0a mode */
2299         if (!BNX_IS_57765_PLUS(sc) &&
2300             CSR_READ_4(sc, BGE_PCIE_PHY_TSTCTL) ==
2301             (BGE_PCIE_PHY_TSTCTL_PSCRAM |
2302              BGE_PCIE_PHY_TSTCTL_PCIE10)) {
2303                 CSR_WRITE_4(sc, BGE_PCIE_PHY_TSTCTL,
2304                     BGE_PCIE_PHY_TSTCTL_PSCRAM);
2305         }
2306         if (sc->bnx_chipid != BGE_CHIPID_BCM5750_A0) {
2307                 /* Prevent PCIE link training during global reset */
2308                 CSR_WRITE_4(sc, BGE_MISC_CFG, (1<<29));
2309                 reset |= (1<<29);
2310         }
2311
2312         /*
2313          * Set GPHY Power Down Override to leave GPHY
2314          * powered up in D0 uninitialized.
2315          */
2316         if ((sc->bnx_flags & BNX_FLAG_CPMU) == 0)
2317                 reset |= BGE_MISCCFG_GPHY_PD_OVERRIDE;
2318
2319         /* Issue global reset */
2320         write_op(sc, BGE_MISC_CFG, reset);
2321
2322         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
2323                 uint32_t status, ctrl;
2324
2325                 status = CSR_READ_4(sc, BGE_VCPU_STATUS);
2326                 CSR_WRITE_4(sc, BGE_VCPU_STATUS,
2327                     status | BGE_VCPU_STATUS_DRV_RESET);
2328                 ctrl = CSR_READ_4(sc, BGE_VCPU_EXT_CTRL);
2329                 CSR_WRITE_4(sc, BGE_VCPU_EXT_CTRL,
2330                     ctrl & ~BGE_VCPU_EXT_CTRL_HALT_CPU);
2331         }
2332
2333         DELAY(1000);
2334
2335         /* XXX: Broadcom Linux driver. */
2336         if (sc->bnx_chipid == BGE_CHIPID_BCM5750_A0) {
2337                 uint32_t v;
2338
2339                 DELAY(500000); /* wait for link training to complete */
2340                 v = pci_read_config(dev, 0xc4, 4);
2341                 pci_write_config(dev, 0xc4, v | (1<<15), 4);
2342         }
2343
2344         devctl = pci_read_config(dev, sc->bnx_pciecap + PCIER_DEVCTRL, 2);
2345
2346         /* Disable no snoop and disable relaxed ordering. */
2347         devctl &= ~(PCIEM_DEVCTL_RELAX_ORDER | PCIEM_DEVCTL_NOSNOOP);
2348
2349         /* Old PCI-E chips only support 128 bytes Max PayLoad Size. */
2350         if ((sc->bnx_flags & BNX_FLAG_CPMU) == 0) {
2351                 devctl &= ~PCIEM_DEVCTL_MAX_PAYLOAD_MASK;
2352                 devctl |= PCIEM_DEVCTL_MAX_PAYLOAD_128;
2353         }
2354
2355         pci_write_config(dev, sc->bnx_pciecap + PCIER_DEVCTRL,
2356             devctl, 2);
2357
2358         /* Clear error status. */
2359         pci_write_config(dev, sc->bnx_pciecap + PCIER_DEVSTS,
2360             PCIEM_DEVSTS_CORR_ERR |
2361             PCIEM_DEVSTS_NFATAL_ERR |
2362             PCIEM_DEVSTS_FATAL_ERR |
2363             PCIEM_DEVSTS_UNSUPP_REQ, 2);
2364
2365         /* Reset some of the PCI state that got zapped by reset */
2366         pci_write_config(dev, BGE_PCI_MISC_CTL,
2367             BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
2368             BGE_HIF_SWAP_OPTIONS|BGE_PCIMISCCTL_PCISTATE_RW|
2369             BGE_PCIMISCCTL_TAGGED_STATUS, 4);
2370         pci_write_config(dev, BGE_PCI_CACHESZ, cachesize, 4);
2371         pci_write_config(dev, BGE_PCI_CMD, command, 4);
2372         write_op(sc, BGE_MISC_CFG, (65 << 1));
2373
2374         /* Enable memory arbiter */
2375         CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
2376
2377         if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
2378                 for (i = 0; i < BNX_TIMEOUT; i++) {
2379                         val = CSR_READ_4(sc, BGE_VCPU_STATUS);
2380                         if (val & BGE_VCPU_STATUS_INIT_DONE)
2381                                 break;
2382                         DELAY(100);
2383                 }
2384                 if (i == BNX_TIMEOUT) {
2385                         if_printf(&sc->arpcom.ac_if, "reset timed out\n");
2386                         return;
2387                 }
2388         } else {
2389                 /*
2390                  * Poll until we see the 1's complement of the magic number.
2391                  * This indicates that the firmware initialization
2392                  * is complete.
2393                  */
2394                 for (i = 0; i < BNX_FIRMWARE_TIMEOUT; i++) {
2395                         val = bnx_readmem_ind(sc, BGE_SOFTWARE_GENCOMM);
2396                         if (val == ~BGE_MAGIC_NUMBER)
2397                                 break;
2398                         DELAY(10);
2399                 }
2400                 if (i == BNX_FIRMWARE_TIMEOUT) {
2401                         if_printf(&sc->arpcom.ac_if, "firmware handshake "
2402                                   "timed out, found 0x%08x\n", val);
2403                 }
2404
2405                 /* BCM57765 A0 needs additional time before accessing. */
2406                 if (sc->bnx_chipid == BGE_CHIPID_BCM57765_A0)
2407                         DELAY(10 * 1000);
2408         }
2409
2410         /*
2411          * XXX Wait for the value of the PCISTATE register to
2412          * return to its original pre-reset state. This is a
2413          * fairly good indicator of reset completion. If we don't
2414          * wait for the reset to fully complete, trying to read
2415          * from the device's non-PCI registers may yield garbage
2416          * results.
2417          */
2418         for (i = 0; i < BNX_TIMEOUT; i++) {
2419                 if (pci_read_config(dev, BGE_PCI_PCISTATE, 4) == pcistate)
2420                         break;
2421                 DELAY(10);
2422         }
2423
2424         /* Fix up byte swapping */
2425         CSR_WRITE_4(sc, BGE_MODE_CTL, bnx_dma_swap_options(sc));
2426
2427         CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
2428
2429         /*
2430          * The 5704 in TBI mode apparently needs some special
2431          * adjustment to insure the SERDES drive level is set
2432          * to 1.2V.
2433          */
2434         if (sc->bnx_asicrev == BGE_ASICREV_BCM5704 &&
2435             (sc->bnx_flags & BNX_FLAG_TBI)) {
2436                 uint32_t serdescfg;
2437
2438                 serdescfg = CSR_READ_4(sc, BGE_SERDES_CFG);
2439                 serdescfg = (serdescfg & ~0xFFF) | 0x880;
2440                 CSR_WRITE_4(sc, BGE_SERDES_CFG, serdescfg);
2441         }
2442
2443         /* XXX: Broadcom Linux driver. */
2444         if (!BNX_IS_57765_PLUS(sc)) {
2445                 uint32_t v;
2446
2447                 /* Enable Data FIFO protection. */
2448                 v = CSR_READ_4(sc, BGE_PCIE_TLDLPL_PORT);
2449                 CSR_WRITE_4(sc, BGE_PCIE_TLDLPL_PORT, v | (1 << 25));
2450         }
2451
2452         DELAY(10000);
2453
2454         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
2455                 BNX_CLRBIT(sc, BGE_CPMU_CLCK_ORIDE,
2456                     CPMU_CLCK_ORIDE_MAC_ORIDE_EN);
2457         }
2458 }
2459
2460 /*
2461  * Frame reception handling. This is called if there's a frame
2462  * on the receive return list.
2463  *
2464  * Note: we have to be able to handle two possibilities here:
2465  * 1) the frame is from the jumbo recieve ring
2466  * 2) the frame is from the standard receive ring
2467  */
2468
2469 static void
2470 bnx_rxeof(struct bnx_softc *sc, uint16_t rx_prod)
2471 {
2472         struct ifnet *ifp;
2473         int stdcnt = 0, jumbocnt = 0;
2474
2475         ifp = &sc->arpcom.ac_if;
2476
2477         while (sc->bnx_rx_saved_considx != rx_prod) {
2478                 struct bge_rx_bd        *cur_rx;
2479                 uint32_t                rxidx;
2480                 struct mbuf             *m = NULL;
2481                 uint16_t                vlan_tag = 0;
2482                 int                     have_tag = 0;
2483
2484                 cur_rx =
2485             &sc->bnx_ldata.bnx_rx_return_ring[sc->bnx_rx_saved_considx];
2486
2487                 rxidx = cur_rx->bge_idx;
2488                 BNX_INC(sc->bnx_rx_saved_considx, sc->bnx_return_ring_cnt);
2489
2490                 if (cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) {
2491                         have_tag = 1;
2492                         vlan_tag = cur_rx->bge_vlan_tag;
2493                 }
2494
2495                 if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) {
2496                         BNX_INC(sc->bnx_jumbo, BGE_JUMBO_RX_RING_CNT);
2497                         jumbocnt++;
2498
2499                         if (rxidx != sc->bnx_jumbo) {
2500                                 ifp->if_ierrors++;
2501                                 if_printf(ifp, "sw jumbo index(%d) "
2502                                     "and hw jumbo index(%d) mismatch, drop!\n",
2503                                     sc->bnx_jumbo, rxidx);
2504                                 bnx_setup_rxdesc_jumbo(sc, rxidx);
2505                                 continue;
2506                         }
2507
2508                         m = sc->bnx_cdata.bnx_rx_jumbo_chain[rxidx].bnx_mbuf;
2509                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2510                                 ifp->if_ierrors++;
2511                                 bnx_setup_rxdesc_jumbo(sc, sc->bnx_jumbo);
2512                                 continue;
2513                         }
2514                         if (bnx_newbuf_jumbo(sc, sc->bnx_jumbo, 0)) {
2515                                 ifp->if_ierrors++;
2516                                 bnx_setup_rxdesc_jumbo(sc, sc->bnx_jumbo);
2517                                 continue;
2518                         }
2519                 } else {
2520                         BNX_INC(sc->bnx_std, BGE_STD_RX_RING_CNT);
2521                         stdcnt++;
2522
2523                         if (rxidx != sc->bnx_std) {
2524                                 ifp->if_ierrors++;
2525                                 if_printf(ifp, "sw std index(%d) "
2526                                     "and hw std index(%d) mismatch, drop!\n",
2527                                     sc->bnx_std, rxidx);
2528                                 bnx_setup_rxdesc_std(sc, rxidx);
2529                                 continue;
2530                         }
2531
2532                         m = sc->bnx_cdata.bnx_rx_std_chain[rxidx].bnx_mbuf;
2533                         if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
2534                                 ifp->if_ierrors++;
2535                                 bnx_setup_rxdesc_std(sc, sc->bnx_std);
2536                                 continue;
2537                         }
2538                         if (bnx_newbuf_std(sc, sc->bnx_std, 0)) {
2539                                 ifp->if_ierrors++;
2540                                 bnx_setup_rxdesc_std(sc, sc->bnx_std);
2541                                 continue;
2542                         }
2543                 }
2544
2545                 ifp->if_ipackets++;
2546                 m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN;
2547                 m->m_pkthdr.rcvif = ifp;
2548
2549                 if ((ifp->if_capenable & IFCAP_RXCSUM) &&
2550                     (cur_rx->bge_flags & BGE_RXBDFLAG_IPV6) == 0) {
2551                         if (cur_rx->bge_flags & BGE_RXBDFLAG_IP_CSUM) {
2552                                 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
2553                                 if ((cur_rx->bge_error_flag &
2554                                     BGE_RXERRFLAG_IP_CSUM_NOK) == 0)
2555                                         m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
2556                         }
2557                         if (cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM) {
2558                                 m->m_pkthdr.csum_data =
2559                                     cur_rx->bge_tcp_udp_csum;
2560                                 m->m_pkthdr.csum_flags |= CSUM_DATA_VALID |
2561                                     CSUM_PSEUDO_HDR;
2562                         }
2563                 }
2564
2565                 /*
2566                  * If we received a packet with a vlan tag, pass it
2567                  * to vlan_input() instead of ether_input().
2568                  */
2569                 if (have_tag) {
2570                         m->m_flags |= M_VLANTAG;
2571                         m->m_pkthdr.ether_vlantag = vlan_tag;
2572                         have_tag = vlan_tag = 0;
2573                 }
2574                 ifp->if_input(ifp, m);
2575         }
2576
2577         bnx_writembx(sc, BGE_MBX_RX_CONS0_LO, sc->bnx_rx_saved_considx);
2578         if (stdcnt)
2579                 bnx_writembx(sc, BGE_MBX_RX_STD_PROD_LO, sc->bnx_std);
2580         if (jumbocnt)
2581                 bnx_writembx(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bnx_jumbo);
2582 }
2583
2584 static void
2585 bnx_txeof(struct bnx_softc *sc, uint16_t tx_cons)
2586 {
2587         struct ifnet *ifp;
2588
2589         ifp = &sc->arpcom.ac_if;
2590
2591         /*
2592          * Go through our tx ring and free mbufs for those
2593          * frames that have been sent.
2594          */
2595         while (sc->bnx_tx_saved_considx != tx_cons) {
2596                 uint32_t idx = 0;
2597
2598                 idx = sc->bnx_tx_saved_considx;
2599                 if (sc->bnx_cdata.bnx_tx_chain[idx] != NULL) {
2600                         ifp->if_opackets++;
2601                         bus_dmamap_unload(sc->bnx_cdata.bnx_tx_mtag,
2602                             sc->bnx_cdata.bnx_tx_dmamap[idx]);
2603                         m_freem(sc->bnx_cdata.bnx_tx_chain[idx]);
2604                         sc->bnx_cdata.bnx_tx_chain[idx] = NULL;
2605                 }
2606                 sc->bnx_txcnt--;
2607                 BNX_INC(sc->bnx_tx_saved_considx, BGE_TX_RING_CNT);
2608         }
2609
2610         if ((BGE_TX_RING_CNT - sc->bnx_txcnt) >=
2611             (BNX_NSEG_RSVD + BNX_NSEG_SPARE))
2612                 ifp->if_flags &= ~IFF_OACTIVE;
2613
2614         if (sc->bnx_txcnt == 0)
2615                 ifp->if_timer = 0;
2616
2617         if (!ifq_is_empty(&ifp->if_snd))
2618                 if_devstart(ifp);
2619 }
2620
2621 #ifdef DEVICE_POLLING
2622
2623 static void
2624 bnx_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
2625 {
2626         struct bnx_softc *sc = ifp->if_softc;
2627         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
2628         uint16_t rx_prod, tx_cons;
2629
2630         switch(cmd) {
2631         case POLL_REGISTER:
2632                 bnx_disable_intr(sc);
2633                 break;
2634         case POLL_DEREGISTER:
2635                 bnx_enable_intr(sc);
2636                 break;
2637         case POLL_AND_CHECK_STATUS:
2638                 /*
2639                  * Process link state changes.
2640                  */
2641                 bnx_link_poll(sc);
2642                 /* Fall through */
2643         case POLL_ONLY:
2644                 sc->bnx_status_tag = sblk->bge_status_tag;
2645                 /*
2646                  * Use a load fence to ensure that status_tag
2647                  * is saved  before rx_prod and tx_cons.
2648                  */
2649                 cpu_lfence();
2650
2651                 rx_prod = sblk->bge_idx[0].bge_rx_prod_idx;
2652                 tx_cons = sblk->bge_idx[0].bge_tx_cons_idx;
2653                 if (ifp->if_flags & IFF_RUNNING) {
2654                         rx_prod = sblk->bge_idx[0].bge_rx_prod_idx;
2655                         if (sc->bnx_rx_saved_considx != rx_prod)
2656                                 bnx_rxeof(sc, rx_prod);
2657
2658                         tx_cons = sblk->bge_idx[0].bge_tx_cons_idx;
2659                         if (sc->bnx_tx_saved_considx != tx_cons)
2660                                 bnx_txeof(sc, tx_cons);
2661                 }
2662                 break;
2663         }
2664 }
2665
2666 #endif
2667
2668 static void
2669 bnx_intr_legacy(void *xsc)
2670 {
2671         struct bnx_softc *sc = xsc;
2672         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
2673
2674         if (sc->bnx_status_tag == sblk->bge_status_tag) {
2675                 uint32_t val;
2676
2677                 val = pci_read_config(sc->bnx_dev, BGE_PCI_PCISTATE, 4);
2678                 if (val & BGE_PCISTAT_INTR_NOTACT)
2679                         return;
2680         }
2681
2682         /*
2683          * NOTE:
2684          * Interrupt will have to be disabled if tagged status
2685          * is used, else interrupt will always be asserted on
2686          * certain chips (at least on BCM5750 AX/BX).
2687          */
2688         bnx_writembx(sc, BGE_MBX_IRQ0_LO, 1);
2689
2690         bnx_intr(sc);
2691 }
2692
2693 static void
2694 bnx_msi(void *xsc)
2695 {
2696         struct bnx_softc *sc = xsc;
2697
2698         /* Disable interrupt first */
2699         bnx_writembx(sc, BGE_MBX_IRQ0_LO, 1);
2700         bnx_intr(sc);
2701 }
2702
2703 static void
2704 bnx_msi_oneshot(void *xsc)
2705 {
2706         bnx_intr(xsc);
2707 }
2708
2709 static void
2710 bnx_intr(struct bnx_softc *sc)
2711 {
2712         struct ifnet *ifp = &sc->arpcom.ac_if;
2713         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
2714         uint16_t rx_prod, tx_cons;
2715         uint32_t status;
2716
2717         sc->bnx_status_tag = sblk->bge_status_tag;
2718         /*
2719          * Use a load fence to ensure that status_tag is saved
2720          * before rx_prod, tx_cons and status.
2721          */
2722         cpu_lfence();
2723
2724         rx_prod = sblk->bge_idx[0].bge_rx_prod_idx;
2725         tx_cons = sblk->bge_idx[0].bge_tx_cons_idx;
2726         status = sblk->bge_status;
2727
2728         if ((status & BGE_STATFLAG_LINKSTATE_CHANGED) || sc->bnx_link_evt)
2729                 bnx_link_poll(sc);
2730
2731         if (ifp->if_flags & IFF_RUNNING) {
2732                 if (sc->bnx_rx_saved_considx != rx_prod)
2733                         bnx_rxeof(sc, rx_prod);
2734
2735                 if (sc->bnx_tx_saved_considx != tx_cons)
2736                         bnx_txeof(sc, tx_cons);
2737         }
2738
2739         bnx_writembx(sc, BGE_MBX_IRQ0_LO, sc->bnx_status_tag << 24);
2740
2741         if (sc->bnx_coal_chg)
2742                 bnx_coal_change(sc);
2743 }
2744
2745 static void
2746 bnx_tick(void *xsc)
2747 {
2748         struct bnx_softc *sc = xsc;
2749         struct ifnet *ifp = &sc->arpcom.ac_if;
2750
2751         lwkt_serialize_enter(ifp->if_serializer);
2752
2753         KKASSERT(mycpuid == sc->bnx_stat_cpuid);
2754
2755         bnx_stats_update_regs(sc);
2756
2757         if (sc->bnx_flags & BNX_FLAG_TBI) {
2758                 /*
2759                  * Since in TBI mode auto-polling can't be used we should poll
2760                  * link status manually. Here we register pending link event
2761                  * and trigger interrupt.
2762                  */
2763                 sc->bnx_link_evt++;
2764                 BNX_SETBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_COAL_NOW);
2765         } else if (!sc->bnx_link) {
2766                 mii_tick(device_get_softc(sc->bnx_miibus));
2767         }
2768
2769         callout_reset(&sc->bnx_stat_timer, hz, bnx_tick, sc);
2770
2771         lwkt_serialize_exit(ifp->if_serializer);
2772 }
2773
2774 static void
2775 bnx_stats_update_regs(struct bnx_softc *sc)
2776 {
2777         struct ifnet *ifp = &sc->arpcom.ac_if;
2778         struct bge_mac_stats_regs stats;
2779         uint32_t *s;
2780         int i;
2781
2782         s = (uint32_t *)&stats;
2783         for (i = 0; i < sizeof(struct bge_mac_stats_regs); i += 4) {
2784                 *s = CSR_READ_4(sc, BGE_RX_STATS + i);
2785                 s++;
2786         }
2787
2788         ifp->if_collisions +=
2789            (stats.dot3StatsSingleCollisionFrames +
2790            stats.dot3StatsMultipleCollisionFrames +
2791            stats.dot3StatsExcessiveCollisions +
2792            stats.dot3StatsLateCollisions) -
2793            ifp->if_collisions;
2794 }
2795
2796 /*
2797  * Encapsulate an mbuf chain in the tx ring  by coupling the mbuf data
2798  * pointers to descriptors.
2799  */
2800 static int
2801 bnx_encap(struct bnx_softc *sc, struct mbuf **m_head0, uint32_t *txidx)
2802 {
2803         struct bge_tx_bd *d = NULL;
2804         uint16_t csum_flags = 0, vlan_tag = 0, mss = 0;
2805         bus_dma_segment_t segs[BNX_NSEG_NEW];
2806         bus_dmamap_t map;
2807         int error, maxsegs, nsegs, idx, i;
2808         struct mbuf *m_head = *m_head0, *m_new;
2809
2810         if (m_head->m_pkthdr.csum_flags & CSUM_TSO) {
2811 #ifdef BNX_TSO_DEBUG
2812                 int tso_nsegs;
2813 #endif
2814
2815                 error = bnx_setup_tso(sc, m_head0, &mss, &csum_flags);
2816                 if (error)
2817                         return error;
2818                 m_head = *m_head0;
2819
2820 #ifdef BNX_TSO_DEBUG
2821                 tso_nsegs = (m_head->m_pkthdr.len /
2822                     m_head->m_pkthdr.tso_segsz) - 1;
2823                 if (tso_nsegs > (BNX_TSO_NSTATS - 1))
2824                         tso_nsegs = BNX_TSO_NSTATS - 1;
2825                 else if (tso_nsegs < 0)
2826                         tso_nsegs = 0;
2827                 sc->bnx_tsosegs[tso_nsegs]++;
2828 #endif
2829         } else if (m_head->m_pkthdr.csum_flags & BNX_CSUM_FEATURES) {
2830                 if (m_head->m_pkthdr.csum_flags & CSUM_IP)
2831                         csum_flags |= BGE_TXBDFLAG_IP_CSUM;
2832                 if (m_head->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))
2833                         csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM;
2834                 if (m_head->m_flags & M_LASTFRAG)
2835                         csum_flags |= BGE_TXBDFLAG_IP_FRAG_END;
2836                 else if (m_head->m_flags & M_FRAG)
2837                         csum_flags |= BGE_TXBDFLAG_IP_FRAG;
2838         }
2839         if (m_head->m_flags & M_VLANTAG) {
2840                 csum_flags |= BGE_TXBDFLAG_VLAN_TAG;
2841                 vlan_tag = m_head->m_pkthdr.ether_vlantag;
2842         }
2843
2844         idx = *txidx;
2845         map = sc->bnx_cdata.bnx_tx_dmamap[idx];
2846
2847         maxsegs = (BGE_TX_RING_CNT - sc->bnx_txcnt) - BNX_NSEG_RSVD;
2848         KASSERT(maxsegs >= BNX_NSEG_SPARE,
2849                 ("not enough segments %d", maxsegs));
2850
2851         if (maxsegs > BNX_NSEG_NEW)
2852                 maxsegs = BNX_NSEG_NEW;
2853
2854         /*
2855          * Pad outbound frame to BGE_MIN_FRAMELEN for an unusual reason.
2856          * The bge hardware will pad out Tx runts to BGE_MIN_FRAMELEN,
2857          * but when such padded frames employ the bge IP/TCP checksum
2858          * offload, the hardware checksum assist gives incorrect results
2859          * (possibly from incorporating its own padding into the UDP/TCP
2860          * checksum; who knows).  If we pad such runts with zeros, the
2861          * onboard checksum comes out correct.
2862          */
2863         if ((csum_flags & BGE_TXBDFLAG_TCP_UDP_CSUM) &&
2864             m_head->m_pkthdr.len < BNX_MIN_FRAMELEN) {
2865                 error = m_devpad(m_head, BNX_MIN_FRAMELEN);
2866                 if (error)
2867                         goto back;
2868         }
2869
2870         if ((sc->bnx_flags & BNX_FLAG_SHORTDMA) && m_head->m_next != NULL) {
2871                 m_new = bnx_defrag_shortdma(m_head);
2872                 if (m_new == NULL) {
2873                         error = ENOBUFS;
2874                         goto back;
2875                 }
2876                 *m_head0 = m_head = m_new;
2877         }
2878         if ((m_head->m_pkthdr.csum_flags & CSUM_TSO) == 0 &&
2879             sc->bnx_force_defrag && m_head->m_next != NULL) {
2880                 /*
2881                  * Forcefully defragment mbuf chain to overcome hardware
2882                  * limitation which only support a single outstanding
2883                  * DMA read operation.  If it fails, keep moving on using
2884                  * the original mbuf chain.
2885                  */
2886                 m_new = m_defrag(m_head, MB_DONTWAIT);
2887                 if (m_new != NULL)
2888                         *m_head0 = m_head = m_new;
2889         }
2890
2891         error = bus_dmamap_load_mbuf_defrag(sc->bnx_cdata.bnx_tx_mtag, map,
2892                         m_head0, segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
2893         if (error)
2894                 goto back;
2895
2896         m_head = *m_head0;
2897         bus_dmamap_sync(sc->bnx_cdata.bnx_tx_mtag, map, BUS_DMASYNC_PREWRITE);
2898
2899         for (i = 0; ; i++) {
2900                 d = &sc->bnx_ldata.bnx_tx_ring[idx];
2901
2902                 d->bge_addr.bge_addr_lo = BGE_ADDR_LO(segs[i].ds_addr);
2903                 d->bge_addr.bge_addr_hi = BGE_ADDR_HI(segs[i].ds_addr);
2904                 d->bge_len = segs[i].ds_len;
2905                 d->bge_flags = csum_flags;
2906                 d->bge_vlan_tag = vlan_tag;
2907                 d->bge_mss = mss;
2908
2909                 if (i == nsegs - 1)
2910                         break;
2911                 BNX_INC(idx, BGE_TX_RING_CNT);
2912         }
2913         /* Mark the last segment as end of packet... */
2914         d->bge_flags |= BGE_TXBDFLAG_END;
2915
2916         /*
2917          * Insure that the map for this transmission is placed at
2918          * the array index of the last descriptor in this chain.
2919          */
2920         sc->bnx_cdata.bnx_tx_dmamap[*txidx] = sc->bnx_cdata.bnx_tx_dmamap[idx];
2921         sc->bnx_cdata.bnx_tx_dmamap[idx] = map;
2922         sc->bnx_cdata.bnx_tx_chain[idx] = m_head;
2923         sc->bnx_txcnt += nsegs;
2924
2925         BNX_INC(idx, BGE_TX_RING_CNT);
2926         *txidx = idx;
2927 back:
2928         if (error) {
2929                 m_freem(*m_head0);
2930                 *m_head0 = NULL;
2931         }
2932         return error;
2933 }
2934
2935 /*
2936  * Main transmit routine. To avoid having to do mbuf copies, we put pointers
2937  * to the mbuf data regions directly in the transmit descriptors.
2938  */
2939 static void
2940 bnx_start(struct ifnet *ifp)
2941 {
2942         struct bnx_softc *sc = ifp->if_softc;
2943         struct mbuf *m_head = NULL;
2944         uint32_t prodidx;
2945         int need_trans;
2946
2947         if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
2948                 return;
2949
2950         prodidx = sc->bnx_tx_prodidx;
2951
2952         need_trans = 0;
2953         while (sc->bnx_cdata.bnx_tx_chain[prodidx] == NULL) {
2954                 /*
2955                  * Sanity check: avoid coming within BGE_NSEG_RSVD
2956                  * descriptors of the end of the ring.  Also make
2957                  * sure there are BGE_NSEG_SPARE descriptors for
2958                  * jumbo buffers' or TSO segments' defragmentation.
2959                  */
2960                 if ((BGE_TX_RING_CNT - sc->bnx_txcnt) <
2961                     (BNX_NSEG_RSVD + BNX_NSEG_SPARE)) {
2962                         ifp->if_flags |= IFF_OACTIVE;
2963                         break;
2964                 }
2965
2966                 m_head = ifq_dequeue(&ifp->if_snd, NULL);
2967                 if (m_head == NULL)
2968                         break;
2969
2970                 /*
2971                  * Pack the data into the transmit ring. If we
2972                  * don't have room, set the OACTIVE flag and wait
2973                  * for the NIC to drain the ring.
2974                  */
2975                 if (bnx_encap(sc, &m_head, &prodidx)) {
2976                         ifp->if_flags |= IFF_OACTIVE;
2977                         ifp->if_oerrors++;
2978                         break;
2979                 }
2980                 need_trans = 1;
2981
2982                 ETHER_BPF_MTAP(ifp, m_head);
2983         }
2984
2985         if (!need_trans)
2986                 return;
2987
2988         /* Transmit */
2989         bnx_writembx(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
2990
2991         sc->bnx_tx_prodidx = prodidx;
2992
2993         /*
2994          * Set a timeout in case the chip goes out to lunch.
2995          */
2996         ifp->if_timer = 5;
2997 }
2998
2999 static void
3000 bnx_init(void *xsc)
3001 {
3002         struct bnx_softc *sc = xsc;
3003         struct ifnet *ifp = &sc->arpcom.ac_if;
3004         uint16_t *m;
3005         uint32_t mode;
3006
3007         ASSERT_SERIALIZED(ifp->if_serializer);
3008
3009         /* Cancel pending I/O and flush buffers. */
3010         bnx_stop(sc);
3011         bnx_reset(sc);
3012         bnx_chipinit(sc);
3013
3014         /*
3015          * Init the various state machines, ring
3016          * control blocks and firmware.
3017          */
3018         if (bnx_blockinit(sc)) {
3019                 if_printf(ifp, "initialization failure\n");
3020                 bnx_stop(sc);
3021                 return;
3022         }
3023
3024         /* Specify MTU. */
3025         CSR_WRITE_4(sc, BGE_RX_MTU, ifp->if_mtu +
3026             ETHER_HDR_LEN + ETHER_CRC_LEN + EVL_ENCAPLEN);
3027
3028         /* Load our MAC address. */
3029         m = (uint16_t *)&sc->arpcom.ac_enaddr[0];
3030         CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0]));
3031         CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2]));
3032
3033         /* Enable or disable promiscuous mode as needed. */
3034         bnx_setpromisc(sc);
3035
3036         /* Program multicast filter. */
3037         bnx_setmulti(sc);
3038
3039         /* Init RX ring. */
3040         if (bnx_init_rx_ring_std(sc)) {
3041                 if_printf(ifp, "RX ring initialization failed\n");
3042                 bnx_stop(sc);
3043                 return;
3044         }
3045
3046         /* Init jumbo RX ring. */
3047         if (ifp->if_mtu > (ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN)) {
3048                 if (bnx_init_rx_ring_jumbo(sc)) {
3049                         if_printf(ifp, "Jumbo RX ring initialization failed\n");
3050                         bnx_stop(sc);
3051                         return;
3052                 }
3053         }
3054
3055         /* Init our RX return ring index */
3056         sc->bnx_rx_saved_considx = 0;
3057
3058         /* Init TX ring. */
3059         bnx_init_tx_ring(sc);
3060
3061         /* Enable TX MAC state machine lockup fix. */
3062         mode = CSR_READ_4(sc, BGE_TX_MODE);
3063         mode |= BGE_TXMODE_MBUF_LOCKUP_FIX;
3064         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
3065                 mode &= ~(BGE_TXMODE_JMB_FRM_LEN | BGE_TXMODE_CNT_DN_MODE);
3066                 mode |= CSR_READ_4(sc, BGE_TX_MODE) &
3067                     (BGE_TXMODE_JMB_FRM_LEN | BGE_TXMODE_CNT_DN_MODE);
3068         }
3069         /* Turn on transmitter */
3070         CSR_WRITE_4(sc, BGE_TX_MODE, mode | BGE_TXMODE_ENABLE);
3071
3072         /* Turn on receiver */
3073         BNX_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
3074
3075         /*
3076          * Set the number of good frames to receive after RX MBUF
3077          * Low Watermark has been reached.  After the RX MAC receives
3078          * this number of frames, it will drop subsequent incoming
3079          * frames until the MBUF High Watermark is reached.
3080          */
3081         if (BNX_IS_57765_FAMILY(sc))
3082                 CSR_WRITE_4(sc, BGE_MAX_RX_FRAME_LOWAT, 1);
3083         else
3084                 CSR_WRITE_4(sc, BGE_MAX_RX_FRAME_LOWAT, 2);
3085
3086         if (sc->bnx_irq_type == PCI_INTR_TYPE_MSI) {
3087                 if (bootverbose) {
3088                         if_printf(ifp, "MSI_MODE: %#x\n",
3089                             CSR_READ_4(sc, BGE_MSI_MODE));
3090                 }
3091         }
3092
3093         /* Tell firmware we're alive. */
3094         BNX_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
3095
3096         /* Enable host interrupts if polling(4) is not enabled. */
3097         PCI_SETBIT(sc->bnx_dev, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA, 4);
3098 #ifdef DEVICE_POLLING
3099         if (ifp->if_flags & IFF_POLLING)
3100                 bnx_disable_intr(sc);
3101         else
3102 #endif
3103         bnx_enable_intr(sc);
3104
3105         bnx_ifmedia_upd(ifp);
3106
3107         ifp->if_flags |= IFF_RUNNING;
3108         ifp->if_flags &= ~IFF_OACTIVE;
3109
3110         callout_reset_bycpu(&sc->bnx_stat_timer, hz, bnx_tick, sc,
3111             sc->bnx_stat_cpuid);
3112 }
3113
3114 /*
3115  * Set media options.
3116  */
3117 static int
3118 bnx_ifmedia_upd(struct ifnet *ifp)
3119 {
3120         struct bnx_softc *sc = ifp->if_softc;
3121
3122         /* If this is a 1000baseX NIC, enable the TBI port. */
3123         if (sc->bnx_flags & BNX_FLAG_TBI) {
3124                 struct ifmedia *ifm = &sc->bnx_ifmedia;
3125
3126                 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
3127                         return(EINVAL);
3128
3129                 switch(IFM_SUBTYPE(ifm->ifm_media)) {
3130                 case IFM_AUTO:
3131                         break;
3132
3133                 case IFM_1000_SX:
3134                         if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) {
3135                                 BNX_CLRBIT(sc, BGE_MAC_MODE,
3136                                     BGE_MACMODE_HALF_DUPLEX);
3137                         } else {
3138                                 BNX_SETBIT(sc, BGE_MAC_MODE,
3139                                     BGE_MACMODE_HALF_DUPLEX);
3140                         }
3141                         break;
3142                 default:
3143                         return(EINVAL);
3144                 }
3145         } else {
3146                 struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3147
3148                 sc->bnx_link_evt++;
3149                 sc->bnx_link = 0;
3150                 if (mii->mii_instance) {
3151                         struct mii_softc *miisc;
3152
3153                         LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
3154                                 mii_phy_reset(miisc);
3155                 }
3156                 mii_mediachg(mii);
3157
3158                 /*
3159                  * Force an interrupt so that we will call bnx_link_upd
3160                  * if needed and clear any pending link state attention.
3161                  * Without this we are not getting any further interrupts
3162                  * for link state changes and thus will not UP the link and
3163                  * not be able to send in bnx_start.  The only way to get
3164                  * things working was to receive a packet and get an RX
3165                  * intr.
3166                  *
3167                  * bnx_tick should help for fiber cards and we might not
3168                  * need to do this here if BNX_FLAG_TBI is set but as
3169                  * we poll for fiber anyway it should not harm.
3170                  */
3171                 BNX_SETBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_COAL_NOW);
3172         }
3173         return(0);
3174 }
3175
3176 /*
3177  * Report current media status.
3178  */
3179 static void
3180 bnx_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
3181 {
3182         struct bnx_softc *sc = ifp->if_softc;
3183
3184         if (sc->bnx_flags & BNX_FLAG_TBI) {
3185                 ifmr->ifm_status = IFM_AVALID;
3186                 ifmr->ifm_active = IFM_ETHER;
3187                 if (CSR_READ_4(sc, BGE_MAC_STS) &
3188                     BGE_MACSTAT_TBI_PCS_SYNCHED) {
3189                         ifmr->ifm_status |= IFM_ACTIVE;
3190                 } else {
3191                         ifmr->ifm_active |= IFM_NONE;
3192                         return;
3193                 }
3194
3195                 ifmr->ifm_active |= IFM_1000_SX;
3196                 if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX)
3197                         ifmr->ifm_active |= IFM_HDX;
3198                 else
3199                         ifmr->ifm_active |= IFM_FDX;
3200         } else {
3201                 struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3202
3203                 mii_pollstat(mii);
3204                 ifmr->ifm_active = mii->mii_media_active;
3205                 ifmr->ifm_status = mii->mii_media_status;
3206         }
3207 }
3208
3209 static int
3210 bnx_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
3211 {
3212         struct bnx_softc *sc = ifp->if_softc;
3213         struct ifreq *ifr = (struct ifreq *)data;
3214         int mask, error = 0;
3215
3216         ASSERT_SERIALIZED(ifp->if_serializer);
3217
3218         switch (command) {
3219         case SIOCSIFMTU:
3220                 if ((!BNX_IS_JUMBO_CAPABLE(sc) && ifr->ifr_mtu > ETHERMTU) ||
3221                     (BNX_IS_JUMBO_CAPABLE(sc) &&
3222                      ifr->ifr_mtu > BNX_JUMBO_MTU)) {
3223                         error = EINVAL;
3224                 } else if (ifp->if_mtu != ifr->ifr_mtu) {
3225                         ifp->if_mtu = ifr->ifr_mtu;
3226                         if (ifp->if_flags & IFF_RUNNING)
3227                                 bnx_init(sc);
3228                 }
3229                 break;
3230         case SIOCSIFFLAGS:
3231                 if (ifp->if_flags & IFF_UP) {
3232                         if (ifp->if_flags & IFF_RUNNING) {
3233                                 mask = ifp->if_flags ^ sc->bnx_if_flags;
3234
3235                                 /*
3236                                  * If only the state of the PROMISC flag
3237                                  * changed, then just use the 'set promisc
3238                                  * mode' command instead of reinitializing
3239                                  * the entire NIC. Doing a full re-init
3240                                  * means reloading the firmware and waiting
3241                                  * for it to start up, which may take a
3242                                  * second or two.  Similarly for ALLMULTI.
3243                                  */
3244                                 if (mask & IFF_PROMISC)
3245                                         bnx_setpromisc(sc);
3246                                 if (mask & IFF_ALLMULTI)
3247                                         bnx_setmulti(sc);
3248                         } else {
3249                                 bnx_init(sc);
3250                         }
3251                 } else if (ifp->if_flags & IFF_RUNNING) {
3252                         bnx_stop(sc);
3253                 }
3254                 sc->bnx_if_flags = ifp->if_flags;
3255                 break;
3256         case SIOCADDMULTI:
3257         case SIOCDELMULTI:
3258                 if (ifp->if_flags & IFF_RUNNING)
3259                         bnx_setmulti(sc);
3260                 break;
3261         case SIOCSIFMEDIA:
3262         case SIOCGIFMEDIA:
3263                 if (sc->bnx_flags & BNX_FLAG_TBI) {
3264                         error = ifmedia_ioctl(ifp, ifr,
3265                             &sc->bnx_ifmedia, command);
3266                 } else {
3267                         struct mii_data *mii;
3268
3269                         mii = device_get_softc(sc->bnx_miibus);
3270                         error = ifmedia_ioctl(ifp, ifr,
3271                                               &mii->mii_media, command);
3272                 }
3273                 break;
3274         case SIOCSIFCAP:
3275                 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
3276                 if (mask & IFCAP_HWCSUM) {
3277                         ifp->if_capenable ^= (mask & IFCAP_HWCSUM);
3278                         if (ifp->if_capenable & IFCAP_TXCSUM)
3279                                 ifp->if_hwassist |= BNX_CSUM_FEATURES;
3280                         else
3281                                 ifp->if_hwassist &= ~BNX_CSUM_FEATURES;
3282                 }
3283                 if (mask & IFCAP_TSO) {
3284                         ifp->if_capenable ^= (mask & IFCAP_TSO);
3285                         if (ifp->if_capenable & IFCAP_TSO)
3286                                 ifp->if_hwassist |= CSUM_TSO;
3287                         else
3288                                 ifp->if_hwassist &= ~CSUM_TSO;
3289                 }
3290                 break;
3291         default:
3292                 error = ether_ioctl(ifp, command, data);
3293                 break;
3294         }
3295         return error;
3296 }
3297
3298 static void
3299 bnx_watchdog(struct ifnet *ifp)
3300 {
3301         struct bnx_softc *sc = ifp->if_softc;
3302
3303         if_printf(ifp, "watchdog timeout -- resetting\n");
3304
3305         bnx_init(sc);
3306
3307         ifp->if_oerrors++;
3308
3309         if (!ifq_is_empty(&ifp->if_snd))
3310                 if_devstart(ifp);
3311 }
3312
3313 /*
3314  * Stop the adapter and free any mbufs allocated to the
3315  * RX and TX lists.
3316  */
3317 static void
3318 bnx_stop(struct bnx_softc *sc)
3319 {
3320         struct ifnet *ifp = &sc->arpcom.ac_if;
3321
3322         ASSERT_SERIALIZED(ifp->if_serializer);
3323
3324         callout_stop(&sc->bnx_stat_timer);
3325
3326         /*
3327          * Disable all of the receiver blocks
3328          */
3329         bnx_stop_block(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
3330         bnx_stop_block(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
3331         bnx_stop_block(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
3332         bnx_stop_block(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE);
3333         bnx_stop_block(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
3334         bnx_stop_block(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE);
3335
3336         /*
3337          * Disable all of the transmit blocks
3338          */
3339         bnx_stop_block(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
3340         bnx_stop_block(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
3341         bnx_stop_block(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
3342         bnx_stop_block(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE);
3343         bnx_stop_block(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
3344         bnx_stop_block(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
3345
3346         /*
3347          * Shut down all of the memory managers and related
3348          * state machines.
3349          */
3350         bnx_stop_block(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
3351         bnx_stop_block(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE);
3352         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
3353         CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
3354
3355         /* Disable host interrupts. */
3356         bnx_disable_intr(sc);
3357
3358         /*
3359          * Tell firmware we're shutting down.
3360          */
3361         BNX_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
3362
3363         /* Free the RX lists. */
3364         bnx_free_rx_ring_std(sc);
3365
3366         /* Free jumbo RX list. */
3367         if (BNX_IS_JUMBO_CAPABLE(sc))
3368                 bnx_free_rx_ring_jumbo(sc);
3369
3370         /* Free TX buffers. */
3371         bnx_free_tx_ring(sc);
3372
3373         sc->bnx_status_tag = 0;
3374         sc->bnx_link = 0;
3375         sc->bnx_coal_chg = 0;
3376
3377         sc->bnx_tx_saved_considx = BNX_TXCONS_UNSET;
3378
3379         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3380         ifp->if_timer = 0;
3381 }
3382
3383 /*
3384  * Stop all chip I/O so that the kernel's probe routines don't
3385  * get confused by errant DMAs when rebooting.
3386  */
3387 static void
3388 bnx_shutdown(device_t dev)
3389 {
3390         struct bnx_softc *sc = device_get_softc(dev);
3391         struct ifnet *ifp = &sc->arpcom.ac_if;
3392
3393         lwkt_serialize_enter(ifp->if_serializer);
3394         bnx_stop(sc);
3395         bnx_reset(sc);
3396         lwkt_serialize_exit(ifp->if_serializer);
3397 }
3398
3399 static int
3400 bnx_suspend(device_t dev)
3401 {
3402         struct bnx_softc *sc = device_get_softc(dev);
3403         struct ifnet *ifp = &sc->arpcom.ac_if;
3404
3405         lwkt_serialize_enter(ifp->if_serializer);
3406         bnx_stop(sc);
3407         lwkt_serialize_exit(ifp->if_serializer);
3408
3409         return 0;
3410 }
3411
3412 static int
3413 bnx_resume(device_t dev)
3414 {
3415         struct bnx_softc *sc = device_get_softc(dev);
3416         struct ifnet *ifp = &sc->arpcom.ac_if;
3417
3418         lwkt_serialize_enter(ifp->if_serializer);
3419
3420         if (ifp->if_flags & IFF_UP) {
3421                 bnx_init(sc);
3422
3423                 if (!ifq_is_empty(&ifp->if_snd))
3424                         if_devstart(ifp);
3425         }
3426
3427         lwkt_serialize_exit(ifp->if_serializer);
3428
3429         return 0;
3430 }
3431
3432 static void
3433 bnx_setpromisc(struct bnx_softc *sc)
3434 {
3435         struct ifnet *ifp = &sc->arpcom.ac_if;
3436
3437         if (ifp->if_flags & IFF_PROMISC)
3438                 BNX_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
3439         else
3440                 BNX_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
3441 }
3442
3443 static void
3444 bnx_dma_free(struct bnx_softc *sc)
3445 {
3446         int i;
3447
3448         /* Destroy RX mbuf DMA stuffs. */
3449         if (sc->bnx_cdata.bnx_rx_mtag != NULL) {
3450                 for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
3451                         bus_dmamap_destroy(sc->bnx_cdata.bnx_rx_mtag,
3452                             sc->bnx_cdata.bnx_rx_std_dmamap[i]);
3453                 }
3454                 bus_dmamap_destroy(sc->bnx_cdata.bnx_rx_mtag,
3455                                    sc->bnx_cdata.bnx_rx_tmpmap);
3456                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_rx_mtag);
3457         }
3458
3459         /* Destroy TX mbuf DMA stuffs. */
3460         if (sc->bnx_cdata.bnx_tx_mtag != NULL) {
3461                 for (i = 0; i < BGE_TX_RING_CNT; i++) {
3462                         bus_dmamap_destroy(sc->bnx_cdata.bnx_tx_mtag,
3463                             sc->bnx_cdata.bnx_tx_dmamap[i]);
3464                 }
3465                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_tx_mtag);
3466         }
3467
3468         /* Destroy standard RX ring */
3469         bnx_dma_block_free(sc->bnx_cdata.bnx_rx_std_ring_tag,
3470                            sc->bnx_cdata.bnx_rx_std_ring_map,
3471                            sc->bnx_ldata.bnx_rx_std_ring);
3472
3473         if (BNX_IS_JUMBO_CAPABLE(sc))
3474                 bnx_free_jumbo_mem(sc);
3475
3476         /* Destroy RX return ring */
3477         bnx_dma_block_free(sc->bnx_cdata.bnx_rx_return_ring_tag,
3478                            sc->bnx_cdata.bnx_rx_return_ring_map,
3479                            sc->bnx_ldata.bnx_rx_return_ring);
3480
3481         /* Destroy TX ring */
3482         bnx_dma_block_free(sc->bnx_cdata.bnx_tx_ring_tag,
3483                            sc->bnx_cdata.bnx_tx_ring_map,
3484                            sc->bnx_ldata.bnx_tx_ring);
3485
3486         /* Destroy status block */
3487         bnx_dma_block_free(sc->bnx_cdata.bnx_status_tag,
3488                            sc->bnx_cdata.bnx_status_map,
3489                            sc->bnx_ldata.bnx_status_block);
3490
3491         /* Destroy the parent tag */
3492         if (sc->bnx_cdata.bnx_parent_tag != NULL)
3493                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_parent_tag);
3494 }
3495
3496 static int
3497 bnx_dma_alloc(struct bnx_softc *sc)
3498 {
3499         struct ifnet *ifp = &sc->arpcom.ac_if;
3500         bus_size_t txmaxsz;
3501         int i, error;
3502
3503         /*
3504          * Allocate the parent bus DMA tag appropriate for PCI.
3505          *
3506          * All of the NetExtreme/NetLink controllers have 4GB boundary
3507          * DMA bug.
3508          * Whenever an address crosses a multiple of the 4GB boundary
3509          * (including 4GB, 8Gb, 12Gb, etc.) and makes the transition
3510          * from 0xX_FFFF_FFFF to 0x(X+1)_0000_0000 an internal DMA
3511          * state machine will lockup and cause the device to hang.
3512          */
3513         error = bus_dma_tag_create(NULL, 1, BGE_DMA_BOUNDARY_4G,
3514                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3515                                    NULL, NULL,
3516                                    BUS_SPACE_MAXSIZE_32BIT, 0,
3517                                    BUS_SPACE_MAXSIZE_32BIT,
3518                                    0, &sc->bnx_cdata.bnx_parent_tag);
3519         if (error) {
3520                 if_printf(ifp, "could not allocate parent dma tag\n");
3521                 return error;
3522         }
3523
3524         /*
3525          * Create DMA tag and maps for RX mbufs.
3526          */
3527         error = bus_dma_tag_create(sc->bnx_cdata.bnx_parent_tag, 1, 0,
3528                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3529                                    NULL, NULL, MCLBYTES, 1, MCLBYTES,
3530                                    BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK,
3531                                    &sc->bnx_cdata.bnx_rx_mtag);
3532         if (error) {
3533                 if_printf(ifp, "could not allocate RX mbuf dma tag\n");
3534                 return error;
3535         }
3536
3537         error = bus_dmamap_create(sc->bnx_cdata.bnx_rx_mtag,
3538                                   BUS_DMA_WAITOK, &sc->bnx_cdata.bnx_rx_tmpmap);
3539         if (error) {
3540                 bus_dma_tag_destroy(sc->bnx_cdata.bnx_rx_mtag);
3541                 sc->bnx_cdata.bnx_rx_mtag = NULL;
3542                 return error;
3543         }
3544
3545         for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
3546                 error = bus_dmamap_create(sc->bnx_cdata.bnx_rx_mtag,
3547                                           BUS_DMA_WAITOK,
3548                                           &sc->bnx_cdata.bnx_rx_std_dmamap[i]);
3549                 if (error) {
3550                         int j;
3551
3552                         for (j = 0; j < i; ++j) {
3553                                 bus_dmamap_destroy(sc->bnx_cdata.bnx_rx_mtag,
3554                                         sc->bnx_cdata.bnx_rx_std_dmamap[j]);
3555                         }
3556                         bus_dma_tag_destroy(sc->bnx_cdata.bnx_rx_mtag);
3557                         sc->bnx_cdata.bnx_rx_mtag = NULL;
3558
3559                         if_printf(ifp, "could not create DMA map for RX\n");
3560                         return error;
3561                 }
3562         }
3563
3564         /*
3565          * Create DMA tag and maps for TX mbufs.
3566          */
3567         if (sc->bnx_flags & BNX_FLAG_TSO)
3568                 txmaxsz = IP_MAXPACKET + sizeof(struct ether_vlan_header);
3569         else
3570                 txmaxsz = BNX_JUMBO_FRAMELEN;
3571         error = bus_dma_tag_create(sc->bnx_cdata.bnx_parent_tag, 1, 0,
3572                                    BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3573                                    NULL, NULL,
3574                                    txmaxsz, BNX_NSEG_NEW, PAGE_SIZE,
3575                                    BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK |
3576                                    BUS_DMA_ONEBPAGE,
3577                                    &sc->bnx_cdata.bnx_tx_mtag);
3578         if (error) {
3579                 if_printf(ifp, "could not allocate TX mbuf dma tag\n");
3580                 return error;
3581         }
3582
3583         for (i = 0; i < BGE_TX_RING_CNT; i++) {
3584                 error = bus_dmamap_create(sc->bnx_cdata.bnx_tx_mtag,
3585                                           BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE,
3586                                           &sc->bnx_cdata.bnx_tx_dmamap[i]);
3587                 if (error) {
3588                         int j;
3589
3590                         for (j = 0; j < i; ++j) {
3591                                 bus_dmamap_destroy(sc->bnx_cdata.bnx_tx_mtag,
3592                                         sc->bnx_cdata.bnx_tx_dmamap[j]);
3593                         }
3594                         bus_dma_tag_destroy(sc->bnx_cdata.bnx_tx_mtag);
3595                         sc->bnx_cdata.bnx_tx_mtag = NULL;
3596
3597                         if_printf(ifp, "could not create DMA map for TX\n");
3598                         return error;
3599                 }
3600         }
3601
3602         /*
3603          * Create DMA stuffs for standard RX ring.
3604          */
3605         error = bnx_dma_block_alloc(sc, BGE_STD_RX_RING_SZ,
3606                                     &sc->bnx_cdata.bnx_rx_std_ring_tag,
3607                                     &sc->bnx_cdata.bnx_rx_std_ring_map,
3608                                     (void *)&sc->bnx_ldata.bnx_rx_std_ring,
3609                                     &sc->bnx_ldata.bnx_rx_std_ring_paddr);
3610         if (error) {
3611                 if_printf(ifp, "could not create std RX ring\n");
3612                 return error;
3613         }
3614
3615         /*
3616          * Create jumbo buffer pool.
3617          */
3618         if (BNX_IS_JUMBO_CAPABLE(sc)) {
3619                 error = bnx_alloc_jumbo_mem(sc);
3620                 if (error) {
3621                         if_printf(ifp, "could not create jumbo buffer pool\n");
3622                         return error;
3623                 }
3624         }
3625
3626         /*
3627          * Create DMA stuffs for RX return ring.
3628          */
3629         error = bnx_dma_block_alloc(sc,
3630             BGE_RX_RTN_RING_SZ(sc->bnx_return_ring_cnt),
3631             &sc->bnx_cdata.bnx_rx_return_ring_tag,
3632             &sc->bnx_cdata.bnx_rx_return_ring_map,
3633             (void *)&sc->bnx_ldata.bnx_rx_return_ring,
3634             &sc->bnx_ldata.bnx_rx_return_ring_paddr);
3635         if (error) {
3636                 if_printf(ifp, "could not create RX ret ring\n");
3637                 return error;
3638         }
3639
3640         /*
3641          * Create DMA stuffs for TX ring.
3642          */
3643         error = bnx_dma_block_alloc(sc, BGE_TX_RING_SZ,
3644                                     &sc->bnx_cdata.bnx_tx_ring_tag,
3645                                     &sc->bnx_cdata.bnx_tx_ring_map,
3646                                     (void *)&sc->bnx_ldata.bnx_tx_ring,
3647                                     &sc->bnx_ldata.bnx_tx_ring_paddr);
3648         if (error) {
3649                 if_printf(ifp, "could not create TX ring\n");
3650                 return error;
3651         }
3652
3653         /*
3654          * Create DMA stuffs for status block.
3655          */
3656         error = bnx_dma_block_alloc(sc, BGE_STATUS_BLK_SZ,
3657                                     &sc->bnx_cdata.bnx_status_tag,
3658                                     &sc->bnx_cdata.bnx_status_map,
3659                                     (void *)&sc->bnx_ldata.bnx_status_block,
3660                                     &sc->bnx_ldata.bnx_status_block_paddr);
3661         if (error) {
3662                 if_printf(ifp, "could not create status block\n");
3663                 return error;
3664         }
3665
3666         return 0;
3667 }
3668
3669 static int
3670 bnx_dma_block_alloc(struct bnx_softc *sc, bus_size_t size, bus_dma_tag_t *tag,
3671                     bus_dmamap_t *map, void **addr, bus_addr_t *paddr)
3672 {
3673         bus_dmamem_t dmem;
3674         int error;
3675
3676         error = bus_dmamem_coherent(sc->bnx_cdata.bnx_parent_tag, PAGE_SIZE, 0,
3677                                     BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
3678                                     size, BUS_DMA_WAITOK | BUS_DMA_ZERO, &dmem);
3679         if (error)
3680                 return error;
3681
3682         *tag = dmem.dmem_tag;
3683         *map = dmem.dmem_map;
3684         *addr = dmem.dmem_addr;
3685         *paddr = dmem.dmem_busaddr;
3686
3687         return 0;
3688 }
3689
3690 static void
3691 bnx_dma_block_free(bus_dma_tag_t tag, bus_dmamap_t map, void *addr)
3692 {
3693         if (tag != NULL) {
3694                 bus_dmamap_unload(tag, map);
3695                 bus_dmamem_free(tag, addr, map);
3696                 bus_dma_tag_destroy(tag);
3697         }
3698 }
3699
3700 static void
3701 bnx_tbi_link_upd(struct bnx_softc *sc, uint32_t status)
3702 {
3703         struct ifnet *ifp = &sc->arpcom.ac_if;
3704
3705 #define PCS_ENCODE_ERR  (BGE_MACSTAT_PORT_DECODE_ERROR|BGE_MACSTAT_MI_COMPLETE)
3706
3707         /*
3708          * Sometimes PCS encoding errors are detected in
3709          * TBI mode (on fiber NICs), and for some reason
3710          * the chip will signal them as link changes.
3711          * If we get a link change event, but the 'PCS
3712          * encoding error' bit in the MAC status register
3713          * is set, don't bother doing a link check.
3714          * This avoids spurious "gigabit link up" messages
3715          * that sometimes appear on fiber NICs during
3716          * periods of heavy traffic.
3717          */
3718         if (status & BGE_MACSTAT_TBI_PCS_SYNCHED) {
3719                 if (!sc->bnx_link) {
3720                         sc->bnx_link++;
3721                         if (sc->bnx_asicrev == BGE_ASICREV_BCM5704) {
3722                                 BNX_CLRBIT(sc, BGE_MAC_MODE,
3723                                     BGE_MACMODE_TBI_SEND_CFGS);
3724                         }
3725                         CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF);
3726
3727                         if (bootverbose)
3728                                 if_printf(ifp, "link UP\n");
3729
3730                         ifp->if_link_state = LINK_STATE_UP;
3731                         if_link_state_change(ifp);
3732                 }
3733         } else if ((status & PCS_ENCODE_ERR) != PCS_ENCODE_ERR) {
3734                 if (sc->bnx_link) {
3735                         sc->bnx_link = 0;
3736
3737                         if (bootverbose)
3738                                 if_printf(ifp, "link DOWN\n");
3739
3740                         ifp->if_link_state = LINK_STATE_DOWN;
3741                         if_link_state_change(ifp);
3742                 }
3743         }
3744
3745 #undef PCS_ENCODE_ERR
3746
3747         /* Clear the attention. */
3748         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3749             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3750             BGE_MACSTAT_LINK_CHANGED);
3751 }
3752
3753 static void
3754 bnx_copper_link_upd(struct bnx_softc *sc, uint32_t status __unused)
3755 {
3756         struct ifnet *ifp = &sc->arpcom.ac_if;
3757         struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3758
3759         mii_pollstat(mii);
3760         bnx_miibus_statchg(sc->bnx_dev);
3761
3762         if (bootverbose) {
3763                 if (sc->bnx_link)
3764                         if_printf(ifp, "link UP\n");
3765                 else
3766                         if_printf(ifp, "link DOWN\n");
3767         }
3768
3769         /* Clear the attention. */
3770         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3771             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3772             BGE_MACSTAT_LINK_CHANGED);
3773 }
3774
3775 static void
3776 bnx_autopoll_link_upd(struct bnx_softc *sc, uint32_t status __unused)
3777 {
3778         struct ifnet *ifp = &sc->arpcom.ac_if;
3779         struct mii_data *mii = device_get_softc(sc->bnx_miibus);
3780
3781         mii_pollstat(mii);
3782
3783         if (!sc->bnx_link &&
3784             (mii->mii_media_status & IFM_ACTIVE) &&
3785             IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
3786                 sc->bnx_link++;
3787                 if (bootverbose)
3788                         if_printf(ifp, "link UP\n");
3789         } else if (sc->bnx_link &&
3790             (!(mii->mii_media_status & IFM_ACTIVE) ||
3791             IFM_SUBTYPE(mii->mii_media_active) == IFM_NONE)) {
3792                 sc->bnx_link = 0;
3793                 if (bootverbose)
3794                         if_printf(ifp, "link DOWN\n");
3795         }
3796
3797         /* Clear the attention. */
3798         CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED |
3799             BGE_MACSTAT_CFG_CHANGED | BGE_MACSTAT_MI_COMPLETE |
3800             BGE_MACSTAT_LINK_CHANGED);
3801 }
3802
3803 static int
3804 bnx_sysctl_rx_coal_ticks(SYSCTL_HANDLER_ARGS)
3805 {
3806         struct bnx_softc *sc = arg1;
3807
3808         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3809             &sc->bnx_rx_coal_ticks,
3810             BNX_RX_COAL_TICKS_MIN, BNX_RX_COAL_TICKS_MAX,
3811             BNX_RX_COAL_TICKS_CHG);
3812 }
3813
3814 static int
3815 bnx_sysctl_tx_coal_ticks(SYSCTL_HANDLER_ARGS)
3816 {
3817         struct bnx_softc *sc = arg1;
3818
3819         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3820             &sc->bnx_tx_coal_ticks,
3821             BNX_TX_COAL_TICKS_MIN, BNX_TX_COAL_TICKS_MAX,
3822             BNX_TX_COAL_TICKS_CHG);
3823 }
3824
3825 static int
3826 bnx_sysctl_rx_coal_bds(SYSCTL_HANDLER_ARGS)
3827 {
3828         struct bnx_softc *sc = arg1;
3829
3830         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3831             &sc->bnx_rx_coal_bds,
3832             BNX_RX_COAL_BDS_MIN, BNX_RX_COAL_BDS_MAX,
3833             BNX_RX_COAL_BDS_CHG);
3834 }
3835
3836 static int
3837 bnx_sysctl_tx_coal_bds(SYSCTL_HANDLER_ARGS)
3838 {
3839         struct bnx_softc *sc = arg1;
3840
3841         return bnx_sysctl_coal_chg(oidp, arg1, arg2, req,
3842             &sc->bnx_tx_coal_bds,
3843             BNX_TX_COAL_BDS_MIN, BNX_TX_COAL_BDS_MAX,
3844             BNX_TX_COAL_BDS_CHG);
3845 }
3846
3847 static int
3848 bnx_sysctl_rx_coal_bds_int(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_bds_int,
3854             BNX_RX_COAL_BDS_MIN, BNX_RX_COAL_BDS_MAX,
3855             BNX_RX_COAL_BDS_INT_CHG);
3856 }
3857
3858 static int
3859 bnx_sysctl_tx_coal_bds_int(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_bds_int,
3865             BNX_TX_COAL_BDS_MIN, BNX_TX_COAL_BDS_MAX,
3866             BNX_TX_COAL_BDS_INT_CHG);
3867 }
3868
3869 static int
3870 bnx_sysctl_coal_chg(SYSCTL_HANDLER_ARGS, uint32_t *coal,
3871     int coal_min, int coal_max, uint32_t coal_chg_mask)
3872 {
3873         struct bnx_softc *sc = arg1;
3874         struct ifnet *ifp = &sc->arpcom.ac_if;
3875         int error = 0, v;
3876
3877         lwkt_serialize_enter(ifp->if_serializer);
3878
3879         v = *coal;
3880         error = sysctl_handle_int(oidp, &v, 0, req);
3881         if (!error && req->newptr != NULL) {
3882                 if (v < coal_min || v > coal_max) {
3883                         error = EINVAL;
3884                 } else {
3885                         *coal = v;
3886                         sc->bnx_coal_chg |= coal_chg_mask;
3887                 }
3888         }
3889
3890         lwkt_serialize_exit(ifp->if_serializer);
3891         return error;
3892 }
3893
3894 static void
3895 bnx_coal_change(struct bnx_softc *sc)
3896 {
3897         struct ifnet *ifp = &sc->arpcom.ac_if;
3898         uint32_t val;
3899
3900         ASSERT_SERIALIZED(ifp->if_serializer);
3901
3902         if (sc->bnx_coal_chg & BNX_RX_COAL_TICKS_CHG) {
3903                 CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS,
3904                             sc->bnx_rx_coal_ticks);
3905                 DELAY(10);
3906                 val = CSR_READ_4(sc, BGE_HCC_RX_COAL_TICKS);
3907
3908                 if (bootverbose) {
3909                         if_printf(ifp, "rx_coal_ticks -> %u\n",
3910                                   sc->bnx_rx_coal_ticks);
3911                 }
3912         }
3913
3914         if (sc->bnx_coal_chg & BNX_TX_COAL_TICKS_CHG) {
3915                 CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS,
3916                             sc->bnx_tx_coal_ticks);
3917                 DELAY(10);
3918                 val = CSR_READ_4(sc, BGE_HCC_TX_COAL_TICKS);
3919
3920                 if (bootverbose) {
3921                         if_printf(ifp, "tx_coal_ticks -> %u\n",
3922                                   sc->bnx_tx_coal_ticks);
3923                 }
3924         }
3925
3926         if (sc->bnx_coal_chg & BNX_RX_COAL_BDS_CHG) {
3927                 CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS,
3928                             sc->bnx_rx_coal_bds);
3929                 DELAY(10);
3930                 val = CSR_READ_4(sc, BGE_HCC_RX_MAX_COAL_BDS);
3931
3932                 if (bootverbose) {
3933                         if_printf(ifp, "rx_coal_bds -> %u\n",
3934                                   sc->bnx_rx_coal_bds);
3935                 }
3936         }
3937
3938         if (sc->bnx_coal_chg & BNX_TX_COAL_BDS_CHG) {
3939                 CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS,
3940                             sc->bnx_tx_coal_bds);
3941                 DELAY(10);
3942                 val = CSR_READ_4(sc, BGE_HCC_TX_MAX_COAL_BDS);
3943
3944                 if (bootverbose) {
3945                         if_printf(ifp, "tx_coal_bds -> %u\n",
3946                                   sc->bnx_tx_coal_bds);
3947                 }
3948         }
3949
3950         if (sc->bnx_coal_chg & BNX_RX_COAL_BDS_INT_CHG) {
3951                 CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT,
3952                     sc->bnx_rx_coal_bds_int);
3953                 DELAY(10);
3954                 val = CSR_READ_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT);
3955
3956                 if (bootverbose) {
3957                         if_printf(ifp, "rx_coal_bds_int -> %u\n",
3958                             sc->bnx_rx_coal_bds_int);
3959                 }
3960         }
3961
3962         if (sc->bnx_coal_chg & BNX_TX_COAL_BDS_INT_CHG) {
3963                 CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT,
3964                     sc->bnx_tx_coal_bds_int);
3965                 DELAY(10);
3966                 val = CSR_READ_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT);
3967
3968                 if (bootverbose) {
3969                         if_printf(ifp, "tx_coal_bds_int -> %u\n",
3970                             sc->bnx_tx_coal_bds_int);
3971                 }
3972         }
3973
3974         sc->bnx_coal_chg = 0;
3975 }
3976
3977 static void
3978 bnx_intr_check(void *xsc)
3979 {
3980         struct bnx_softc *sc = xsc;
3981         struct ifnet *ifp = &sc->arpcom.ac_if;
3982         struct bge_status_block *sblk = sc->bnx_ldata.bnx_status_block;
3983
3984         lwkt_serialize_enter(ifp->if_serializer);
3985
3986         KKASSERT(mycpuid == sc->bnx_intr_cpuid);
3987
3988         if ((ifp->if_flags & (IFF_RUNNING | IFF_POLLING)) != IFF_RUNNING) {
3989                 lwkt_serialize_exit(ifp->if_serializer);
3990                 return;
3991         }
3992
3993         if (sblk->bge_idx[0].bge_rx_prod_idx != sc->bnx_rx_saved_considx ||
3994             sblk->bge_idx[0].bge_tx_cons_idx != sc->bnx_tx_saved_considx) {
3995                 if (sc->bnx_rx_check_considx == sc->bnx_rx_saved_considx &&
3996                     sc->bnx_tx_check_considx == sc->bnx_tx_saved_considx) {
3997                         if (!sc->bnx_intr_maylose) {
3998                                 sc->bnx_intr_maylose = TRUE;
3999                                 goto done;
4000                         }
4001                         if (bootverbose)
4002                                 if_printf(ifp, "lost interrupt\n");
4003                         bnx_msi(sc);
4004                 }
4005         }
4006         sc->bnx_intr_maylose = FALSE;
4007         sc->bnx_rx_check_considx = sc->bnx_rx_saved_considx;
4008         sc->bnx_tx_check_considx = sc->bnx_tx_saved_considx;
4009
4010 done:
4011         callout_reset(&sc->bnx_intr_timer, BNX_INTR_CKINTVL,
4012             bnx_intr_check, sc);
4013         lwkt_serialize_exit(ifp->if_serializer);
4014 }
4015
4016 static void
4017 bnx_enable_intr(struct bnx_softc *sc)
4018 {
4019         struct ifnet *ifp = &sc->arpcom.ac_if;
4020
4021         lwkt_serialize_handler_enable(ifp->if_serializer);
4022
4023         /*
4024          * Enable interrupt.
4025          */
4026         bnx_writembx(sc, BGE_MBX_IRQ0_LO, sc->bnx_status_tag << 24);
4027         if (sc->bnx_flags & BNX_FLAG_ONESHOT_MSI) {
4028                 /* XXX Linux driver */
4029                 bnx_writembx(sc, BGE_MBX_IRQ0_LO, sc->bnx_status_tag << 24);
4030         }
4031
4032         /*
4033          * Unmask the interrupt when we stop polling.
4034          */
4035         PCI_CLRBIT(sc->bnx_dev, BGE_PCI_MISC_CTL,
4036             BGE_PCIMISCCTL_MASK_PCI_INTR, 4);
4037
4038         /*
4039          * Trigger another interrupt, since above writing
4040          * to interrupt mailbox0 may acknowledge pending
4041          * interrupt.
4042          */
4043         BNX_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_SET);
4044
4045         if (sc->bnx_flags & BNX_FLAG_STATUSTAG_BUG) {
4046                 sc->bnx_intr_maylose = FALSE;
4047                 sc->bnx_rx_check_considx = 0;
4048                 sc->bnx_tx_check_considx = 0;
4049
4050                 if (bootverbose)
4051                         if_printf(ifp, "status tag bug workaround\n");
4052
4053                 /* 10ms check interval */
4054                 callout_reset_bycpu(&sc->bnx_intr_timer, BNX_INTR_CKINTVL,
4055                     bnx_intr_check, sc, sc->bnx_intr_cpuid);
4056         }
4057 }
4058
4059 static void
4060 bnx_disable_intr(struct bnx_softc *sc)
4061 {
4062         struct ifnet *ifp = &sc->arpcom.ac_if;
4063
4064         /*
4065          * Mask the interrupt when we start polling.
4066          */
4067         PCI_SETBIT(sc->bnx_dev, BGE_PCI_MISC_CTL,
4068             BGE_PCIMISCCTL_MASK_PCI_INTR, 4);
4069
4070         /*
4071          * Acknowledge possible asserted interrupt.
4072          */
4073         bnx_writembx(sc, BGE_MBX_IRQ0_LO, 1);
4074
4075         callout_stop(&sc->bnx_intr_timer);
4076         sc->bnx_intr_maylose = FALSE;
4077         sc->bnx_rx_check_considx = 0;
4078         sc->bnx_tx_check_considx = 0;
4079
4080         lwkt_serialize_handler_disable(ifp->if_serializer);
4081 }
4082
4083 static int
4084 bnx_get_eaddr_mem(struct bnx_softc *sc, uint8_t ether_addr[])
4085 {
4086         uint32_t mac_addr;
4087         int ret = 1;
4088
4089         mac_addr = bnx_readmem_ind(sc, 0x0c14);
4090         if ((mac_addr >> 16) == 0x484b) {
4091                 ether_addr[0] = (uint8_t)(mac_addr >> 8);
4092                 ether_addr[1] = (uint8_t)mac_addr;
4093                 mac_addr = bnx_readmem_ind(sc, 0x0c18);
4094                 ether_addr[2] = (uint8_t)(mac_addr >> 24);
4095                 ether_addr[3] = (uint8_t)(mac_addr >> 16);
4096                 ether_addr[4] = (uint8_t)(mac_addr >> 8);
4097                 ether_addr[5] = (uint8_t)mac_addr;
4098                 ret = 0;
4099         }
4100         return ret;
4101 }
4102
4103 static int
4104 bnx_get_eaddr_nvram(struct bnx_softc *sc, uint8_t ether_addr[])
4105 {
4106         int mac_offset = BGE_EE_MAC_OFFSET;
4107
4108         if (BNX_IS_5717_PLUS(sc)) {
4109                 int f;
4110
4111                 f = pci_get_function(sc->bnx_dev);
4112                 if (f & 1)
4113                         mac_offset = BGE_EE_MAC_OFFSET_5717;
4114                 if (f > 1)
4115                         mac_offset += BGE_EE_MAC_OFFSET_5717_OFF;
4116         } else if (sc->bnx_asicrev == BGE_ASICREV_BCM5906) {
4117                 mac_offset = BGE_EE_MAC_OFFSET_5906;
4118         }
4119
4120         return bnx_read_nvram(sc, ether_addr, mac_offset + 2, ETHER_ADDR_LEN);
4121 }
4122
4123 static int
4124 bnx_get_eaddr_eeprom(struct bnx_softc *sc, uint8_t ether_addr[])
4125 {
4126         if (sc->bnx_flags & BNX_FLAG_NO_EEPROM)
4127                 return 1;
4128
4129         return bnx_read_eeprom(sc, ether_addr, BGE_EE_MAC_OFFSET + 2,
4130                                ETHER_ADDR_LEN);
4131 }
4132
4133 static int
4134 bnx_get_eaddr(struct bnx_softc *sc, uint8_t eaddr[])
4135 {
4136         static const bnx_eaddr_fcn_t bnx_eaddr_funcs[] = {
4137                 /* NOTE: Order is critical */
4138                 bnx_get_eaddr_mem,
4139                 bnx_get_eaddr_nvram,
4140                 bnx_get_eaddr_eeprom,
4141                 NULL
4142         };
4143         const bnx_eaddr_fcn_t *func;
4144
4145         for (func = bnx_eaddr_funcs; *func != NULL; ++func) {
4146                 if ((*func)(sc, eaddr) == 0)
4147                         break;
4148         }
4149         return (*func == NULL ? ENXIO : 0);
4150 }
4151
4152 /*
4153  * NOTE: 'm' is not freed upon failure
4154  */
4155 struct mbuf *
4156 bnx_defrag_shortdma(struct mbuf *m)
4157 {
4158         struct mbuf *n;
4159         int found;
4160
4161         /*
4162          * If device receive two back-to-back send BDs with less than
4163          * or equal to 8 total bytes then the device may hang.  The two
4164          * back-to-back send BDs must in the same frame for this failure
4165          * to occur.  Scan mbuf chains and see whether two back-to-back
4166          * send BDs are there.  If this is the case, allocate new mbuf
4167          * and copy the frame to workaround the silicon bug.
4168          */
4169         for (n = m, found = 0; n != NULL; n = n->m_next) {
4170                 if (n->m_len < 8) {
4171                         found++;
4172                         if (found > 1)
4173                                 break;
4174                         continue;
4175                 }
4176                 found = 0;
4177         }
4178
4179         if (found > 1)
4180                 n = m_defrag(m, MB_DONTWAIT);
4181         else
4182                 n = m;
4183         return n;
4184 }
4185
4186 static void
4187 bnx_stop_block(struct bnx_softc *sc, bus_size_t reg, uint32_t bit)
4188 {
4189         int i;
4190
4191         BNX_CLRBIT(sc, reg, bit);
4192         for (i = 0; i < BNX_TIMEOUT; i++) {
4193                 if ((CSR_READ_4(sc, reg) & bit) == 0)
4194                         return;
4195                 DELAY(100);
4196         }
4197 }
4198
4199 static void
4200 bnx_link_poll(struct bnx_softc *sc)
4201 {
4202         uint32_t status;
4203
4204         status = CSR_READ_4(sc, BGE_MAC_STS);
4205         if ((status & sc->bnx_link_chg) || sc->bnx_link_evt) {
4206                 sc->bnx_link_evt = 0;
4207                 sc->bnx_link_upd(sc, status);
4208         }
4209 }
4210
4211 static void
4212 bnx_enable_msi(struct bnx_softc *sc)
4213 {
4214         uint32_t msi_mode;
4215
4216         msi_mode = CSR_READ_4(sc, BGE_MSI_MODE);
4217         msi_mode |= BGE_MSIMODE_ENABLE;
4218         if (sc->bnx_flags & BNX_FLAG_ONESHOT_MSI) {
4219                 /*
4220                  * NOTE:
4221                  * 5718-PG105-R says that "one shot" mode
4222                  * does not work if MSI is used, however,
4223                  * it obviously works.
4224                  */
4225                 msi_mode &= ~BGE_MSIMODE_ONESHOT_DISABLE;
4226         }
4227         CSR_WRITE_4(sc, BGE_MSI_MODE, msi_mode);
4228 }
4229
4230 static uint32_t
4231 bnx_dma_swap_options(struct bnx_softc *sc)
4232 {
4233         uint32_t dma_options;
4234
4235         dma_options = BGE_MODECTL_WORDSWAP_NONFRAME |
4236             BGE_MODECTL_BYTESWAP_DATA | BGE_MODECTL_WORDSWAP_DATA;
4237 #if BYTE_ORDER == BIG_ENDIAN
4238         dma_options |= BGE_MODECTL_BYTESWAP_NONFRAME;
4239 #endif
4240         if (sc->bnx_asicrev == BGE_ASICREV_BCM5720) {
4241                 dma_options |= BGE_MODECTL_BYTESWAP_B2HRX_DATA |
4242                     BGE_MODECTL_WORDSWAP_B2HRX_DATA | BGE_MODECTL_B2HRX_ENABLE |
4243                     BGE_MODECTL_HTX2B_ENABLE;
4244         }
4245         return dma_options;
4246 }
4247
4248 static int
4249 bnx_setup_tso(struct bnx_softc *sc, struct mbuf **mp,
4250     uint16_t *mss0, uint16_t *flags0)
4251 {
4252         struct mbuf *m;
4253         struct ip *ip;
4254         struct tcphdr *th;
4255         int thoff, iphlen, hoff, hlen;
4256         uint16_t flags, mss;
4257
4258         m = *mp;
4259         KASSERT(M_WRITABLE(m), ("TSO mbuf not writable"));
4260
4261         hoff = m->m_pkthdr.csum_lhlen;
4262         iphlen = m->m_pkthdr.csum_iphlen;
4263         thoff = m->m_pkthdr.csum_thlen;
4264
4265         KASSERT(hoff > 0, ("invalid ether header len"));
4266         KASSERT(iphlen > 0, ("invalid ip header len"));
4267         KASSERT(thoff > 0, ("invalid tcp header len"));
4268
4269         if (__predict_false(m->m_len < hoff + iphlen + thoff)) {
4270                 m = m_pullup(m, hoff + iphlen + thoff);
4271                 if (m == NULL) {
4272                         *mp = NULL;
4273                         return ENOBUFS;
4274                 }
4275                 *mp = m;
4276         }
4277         ip = mtodoff(m, struct ip *, hoff);
4278         th = mtodoff(m, struct tcphdr *, hoff + iphlen);
4279
4280         mss = m->m_pkthdr.tso_segsz;
4281         flags = BGE_TXBDFLAG_CPU_PRE_DMA | BGE_TXBDFLAG_CPU_POST_DMA;
4282
4283         ip->ip_len = htons(mss + iphlen + thoff);
4284         th->th_sum = 0;
4285
4286         hlen = (iphlen + thoff) >> 2;
4287         mss |= ((hlen & 0x3) << 14);
4288         flags |= ((hlen & 0xf8) << 7) | ((hlen & 0x4) << 2);
4289
4290         *mss0 = mss;
4291         *flags0 = flags;
4292
4293         return 0;
4294 }