sys/dev/netif/bce/if_bce.c

   1 /*-
   2  * Copyright (c) 2006-2007 Broadcom Corporation
   3  *      David Christensen <davidch@broadcom.com>.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   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. Neither the name of Broadcom Corporation nor the name of its contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written consent.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS'
  19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
  22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  28  * THE POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * $FreeBSD: src/sys/dev/bce/if_bce.c,v 1.31 2007/05/16 23:34:11 davidch Exp $
  31  */
  32
  33 /*
  34  * The following controllers are supported by this driver:
  35  *   BCM5706C A2, A3
  36  *   BCM5706S A2, A3
  37  *   BCM5708C B1, B2
  38  *   BCM5708S B1, B2
  39  *   BCM5709C A1, C0
  40  *   BCM5716  C0
  41  *
  42  * The following controllers are not supported by this driver:
  43  *   BCM5706C A0, A1
  44  *   BCM5706S A0, A1
  45  *   BCM5708C A0, B0
  46  *   BCM5708S A0, B0
  47  *   BCM5709C A0, B0, B1
  48  *   BCM5709S A0, A1, B0, B1, B2, C0
  49  */
  50
  51 #include "opt_bce.h"
  52 #include "opt_polling.h"
  53
  54 #include <sys/param.h>
  55 #include <sys/bus.h>
  56 #include <sys/endian.h>
  57 #include <sys/kernel.h>
  58 #include <sys/interrupt.h>
  59 #include <sys/mbuf.h>
  60 #include <sys/malloc.h>
  61 #include <sys/queue.h>
  62 #ifdef BCE_DEBUG
  63 #include <sys/random.h>
  64 #endif
  65 #include <sys/rman.h>
  66 #include <sys/serialize.h>
  67 #include <sys/socket.h>
  68 #include <sys/sockio.h>
  69 #include <sys/sysctl.h>
  70
  71 #include <net/bpf.h>
  72 #include <net/ethernet.h>
  73 #include <net/if.h>
  74 #include <net/if_arp.h>
  75 #include <net/if_dl.h>
  76 #include <net/if_media.h>
  77 #include <net/if_types.h>
  78 #include <net/ifq_var.h>
  79 #include <net/vlan/if_vlan_var.h>
  80 #include <net/vlan/if_vlan_ether.h>
  81
  82 #include <dev/netif/mii_layer/mii.h>
  83 #include <dev/netif/mii_layer/miivar.h>
  84
  85 #include <bus/pci/pcireg.h>
  86 #include <bus/pci/pcivar.h>
  87
  88 #include "miibus_if.h"
  89
  90 #include <dev/netif/bce/if_bcereg.h>
  91 #include <dev/netif/bce/if_bcefw.h>
  92
  93 /****************************************************************************/
  94 /* BCE Debug Options                                                        */
  95 /****************************************************************************/
  96 #ifdef BCE_DEBUG
  97
  98 static uint32_t bce_debug = BCE_WARN;
  99
 100 /*
 101  *          0 = Never
 102  *          1 = 1 in 2,147,483,648
 103  *        256 = 1 in     8,388,608
 104  *       2048 = 1 in     1,048,576
 105  *      65536 = 1 in        32,768
 106  *    1048576 = 1 in         2,048
 107  *  268435456 = 1 in             8
 108  *  536870912 = 1 in             4
 109  * 1073741824 = 1 in             2
 110  *
 111  * bce_debug_l2fhdr_status_check:
 112  *     How often the l2_fhdr frame error check will fail.
 113  *
 114  * bce_debug_unexpected_attention:
 115  *     How often the unexpected attention check will fail.
 116  *
 117  * bce_debug_mbuf_allocation_failure:
 118  *     How often to simulate an mbuf allocation failure.
 119  *
 120  * bce_debug_dma_map_addr_failure:
 121  *     How often to simulate a DMA mapping failure.
 122  *
 123  * bce_debug_bootcode_running_failure:
 124  *     How often to simulate a bootcode failure.
 125  */
 126 static int      bce_debug_l2fhdr_status_check = 0;
 127 static int      bce_debug_unexpected_attention = 0;
 128 static int      bce_debug_mbuf_allocation_failure = 0;
 129 static int      bce_debug_dma_map_addr_failure = 0;
 130 static int      bce_debug_bootcode_running_failure = 0;
 131
 132 #endif  /* BCE_DEBUG */
 133
 134
 135 /****************************************************************************/
 136 /* PCI Device ID Table                                                      */
 137 /*                                                                          */
 138 /* Used by bce_probe() to identify the devices supported by this driver.    */
 139 /****************************************************************************/
 140 #define BCE_DEVDESC_MAX         64
 141
 142 static struct bce_type bce_devs[] = {
 143         /* BCM5706C Controllers and OEM boards. */
 144         { BRCM_VENDORID, BRCM_DEVICEID_BCM5706,  HP_VENDORID, 0x3101,
 145                 "HP NC370T Multifunction Gigabit Server Adapter" },
 146         { BRCM_VENDORID, BRCM_DEVICEID_BCM5706,  HP_VENDORID, 0x3106,
 147                 "HP NC370i Multifunction Gigabit Server Adapter" },
 148         { BRCM_VENDORID, BRCM_DEVICEID_BCM5706,  HP_VENDORID, 0x3070,
 149                 "HP NC380T PCIe DP Multifunc Gig Server Adapter" },
 150         { BRCM_VENDORID, BRCM_DEVICEID_BCM5706,  HP_VENDORID, 0x1709,
 151                 "HP NC371i Multifunction Gigabit Server Adapter" },
 152         { BRCM_VENDORID, BRCM_DEVICEID_BCM5706,  PCI_ANY_ID,  PCI_ANY_ID,
 153                 "Broadcom NetXtreme II BCM5706 1000Base-T" },
 154
 155         /* BCM5706S controllers and OEM boards. */
 156         { BRCM_VENDORID, BRCM_DEVICEID_BCM5706S, HP_VENDORID, 0x3102,
 157                 "HP NC370F Multifunction Gigabit Server Adapter" },
 158         { BRCM_VENDORID, BRCM_DEVICEID_BCM5706S, PCI_ANY_ID,  PCI_ANY_ID,
 159                 "Broadcom NetXtreme II BCM5706 1000Base-SX" },
 160
 161         /* BCM5708C controllers and OEM boards. */
 162         { BRCM_VENDORID, BRCM_DEVICEID_BCM5708,  HP_VENDORID, 0x7037,
 163                 "HP NC373T PCIe Multifunction Gig Server Adapter" },
 164         { BRCM_VENDORID, BRCM_DEVICEID_BCM5708,  HP_VENDORID, 0x7038,
 165                 "HP NC373i Multifunction Gigabit Server Adapter" },
 166         { BRCM_VENDORID, BRCM_DEVICEID_BCM5708,  HP_VENDORID, 0x7045,
 167                 "HP NC374m PCIe Multifunction Adapter" },
 168         { BRCM_VENDORID, BRCM_DEVICEID_BCM5708,  PCI_ANY_ID,  PCI_ANY_ID,
 169                 "Broadcom NetXtreme II BCM5708 1000Base-T" },
 170
 171         /* BCM5708S controllers and OEM boards. */
 172         { BRCM_VENDORID, BRCM_DEVICEID_BCM5708S,  HP_VENDORID, 0x1706,
 173                 "HP NC373m Multifunction Gigabit Server Adapter" },
 174         { BRCM_VENDORID, BRCM_DEVICEID_BCM5708S,  HP_VENDORID, 0x703b,
 175                 "HP NC373i Multifunction Gigabit Server Adapter" },
 176         { BRCM_VENDORID, BRCM_DEVICEID_BCM5708S,  HP_VENDORID, 0x703d,
 177                 "HP NC373F PCIe Multifunc Giga Server Adapter" },
 178         { BRCM_VENDORID, BRCM_DEVICEID_BCM5708S,  PCI_ANY_ID,  PCI_ANY_ID,
 179                 "Broadcom NetXtreme II BCM5708S 1000Base-T" },
 180
 181         /* BCM5709C controllers and OEM boards. */
 182         { BRCM_VENDORID, BRCM_DEVICEID_BCM5709,  HP_VENDORID, 0x7055,
 183                 "HP NC382i DP Multifunction Gigabit Server Adapter" },
 184         { BRCM_VENDORID, BRCM_DEVICEID_BCM5709,  HP_VENDORID, 0x7059,
 185                 "HP NC382T PCIe DP Multifunction Gigabit Server Adapter" },
 186         { BRCM_VENDORID, BRCM_DEVICEID_BCM5709,  PCI_ANY_ID,  PCI_ANY_ID,
 187                 "Broadcom NetXtreme II BCM5709 1000Base-T" },
 188
 189         /* BCM5709S controllers and OEM boards. */
 190         { BRCM_VENDORID, BRCM_DEVICEID_BCM5709S,  HP_VENDORID, 0x171d,
 191                 "HP NC382m DP 1GbE Multifunction BL-c Adapter" },
 192         { BRCM_VENDORID, BRCM_DEVICEID_BCM5709S,  HP_VENDORID, 0x7056,
 193                 "HP NC382i DP Multifunction Gigabit Server Adapter" },
 194         { BRCM_VENDORID, BRCM_DEVICEID_BCM5709S,  PCI_ANY_ID,  PCI_ANY_ID,
 195                 "Broadcom NetXtreme II BCM5709 1000Base-SX" },
 196
 197         /* BCM5716 controllers and OEM boards. */
 198         { BRCM_VENDORID, BRCM_DEVICEID_BCM5716,   PCI_ANY_ID,  PCI_ANY_ID,
 199                 "Broadcom NetXtreme II BCM5716 1000Base-T" },
 200
 201         { 0, 0, 0, 0, NULL }
 202 };
 203
 204
 205 /****************************************************************************/
 206 /* Supported Flash NVRAM device data.                                       */
 207 /****************************************************************************/
 208 static const struct flash_spec flash_table[] =
 209 {
 210 #define BUFFERED_FLAGS          (BCE_NV_BUFFERED | BCE_NV_TRANSLATE)
 211 #define NONBUFFERED_FLAGS       (BCE_NV_WREN)
 212
 213         /* Slow EEPROM */
 214         {0x00000000, 0x40830380, 0x009f0081, 0xa184a053, 0xaf000400,
 215          BUFFERED_FLAGS, SEEPROM_PAGE_BITS, SEEPROM_PAGE_SIZE,
 216          SEEPROM_BYTE_ADDR_MASK, SEEPROM_TOTAL_SIZE,
 217          "EEPROM - slow"},
 218         /* Expansion entry 0001 */
 219         {0x08000002, 0x4b808201, 0x00050081, 0x03840253, 0xaf020406,
 220          NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE,
 221          SAIFUN_FLASH_BYTE_ADDR_MASK, 0,
 222          "Entry 0001"},
 223         /* Saifun SA25F010 (non-buffered flash) */
 224         /* strap, cfg1, & write1 need updates */
 225         {0x04000001, 0x47808201, 0x00050081, 0x03840253, 0xaf020406,
 226          NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE,
 227          SAIFUN_FLASH_BYTE_ADDR_MASK, SAIFUN_FLASH_BASE_TOTAL_SIZE*2,
 228          "Non-buffered flash (128kB)"},
 229         /* Saifun SA25F020 (non-buffered flash) */
 230         /* strap, cfg1, & write1 need updates */
 231         {0x0c000003, 0x4f808201, 0x00050081, 0x03840253, 0xaf020406,
 232          NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE,
 233          SAIFUN_FLASH_BYTE_ADDR_MASK, SAIFUN_FLASH_BASE_TOTAL_SIZE*4,
 234          "Non-buffered flash (256kB)"},
 235         /* Expansion entry 0100 */
 236         {0x11000000, 0x53808201, 0x00050081, 0x03840253, 0xaf020406,
 237          NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE,
 238          SAIFUN_FLASH_BYTE_ADDR_MASK, 0,
 239          "Entry 0100"},
 240         /* Entry 0101: ST M45PE10 (non-buffered flash, TetonII B0) */
 241         {0x19000002, 0x5b808201, 0x000500db, 0x03840253, 0xaf020406,
 242          NONBUFFERED_FLAGS, ST_MICRO_FLASH_PAGE_BITS, ST_MICRO_FLASH_PAGE_SIZE,
 243          ST_MICRO_FLASH_BYTE_ADDR_MASK, ST_MICRO_FLASH_BASE_TOTAL_SIZE*2,
 244          "Entry 0101: ST M45PE10 (128kB non-bufferred)"},
 245         /* Entry 0110: ST M45PE20 (non-buffered flash)*/
 246         {0x15000001, 0x57808201, 0x000500db, 0x03840253, 0xaf020406,
 247          NONBUFFERED_FLAGS, ST_MICRO_FLASH_PAGE_BITS, ST_MICRO_FLASH_PAGE_SIZE,
 248          ST_MICRO_FLASH_BYTE_ADDR_MASK, ST_MICRO_FLASH_BASE_TOTAL_SIZE*4,
 249          "Entry 0110: ST M45PE20 (256kB non-bufferred)"},
 250         /* Saifun SA25F005 (non-buffered flash) */
 251         /* strap, cfg1, & write1 need updates */
 252         {0x1d000003, 0x5f808201, 0x00050081, 0x03840253, 0xaf020406,
 253          NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE,
 254          SAIFUN_FLASH_BYTE_ADDR_MASK, SAIFUN_FLASH_BASE_TOTAL_SIZE,
 255          "Non-buffered flash (64kB)"},
 256         /* Fast EEPROM */
 257         {0x22000000, 0x62808380, 0x009f0081, 0xa184a053, 0xaf000400,
 258          BUFFERED_FLAGS, SEEPROM_PAGE_BITS, SEEPROM_PAGE_SIZE,
 259          SEEPROM_BYTE_ADDR_MASK, SEEPROM_TOTAL_SIZE,
 260          "EEPROM - fast"},
 261         /* Expansion entry 1001 */
 262         {0x2a000002, 0x6b808201, 0x00050081, 0x03840253, 0xaf020406,
 263          NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE,
 264          SAIFUN_FLASH_BYTE_ADDR_MASK, 0,
 265          "Entry 1001"},
 266         /* Expansion entry 1010 */
 267         {0x26000001, 0x67808201, 0x00050081, 0x03840253, 0xaf020406,
 268          NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE,
 269          SAIFUN_FLASH_BYTE_ADDR_MASK, 0,
 270          "Entry 1010"},
 271         /* ATMEL AT45DB011B (buffered flash) */
 272         {0x2e000003, 0x6e808273, 0x00570081, 0x68848353, 0xaf000400,
 273          BUFFERED_FLAGS, BUFFERED_FLASH_PAGE_BITS, BUFFERED_FLASH_PAGE_SIZE,
 274          BUFFERED_FLASH_BYTE_ADDR_MASK, BUFFERED_FLASH_TOTAL_SIZE,
 275          "Buffered flash (128kB)"},
 276         /* Expansion entry 1100 */
 277         {0x33000000, 0x73808201, 0x00050081, 0x03840253, 0xaf020406,
 278          NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE,
 279          SAIFUN_FLASH_BYTE_ADDR_MASK, 0,
 280          "Entry 1100"},
 281         /* Expansion entry 1101 */
 282         {0x3b000002, 0x7b808201, 0x00050081, 0x03840253, 0xaf020406,
 283          NONBUFFERED_FLAGS, SAIFUN_FLASH_PAGE_BITS, SAIFUN_FLASH_PAGE_SIZE,
 284          SAIFUN_FLASH_BYTE_ADDR_MASK, 0,
 285          "Entry 1101"},
 286         /* Ateml Expansion entry 1110 */
 287         {0x37000001, 0x76808273, 0x00570081, 0x68848353, 0xaf000400,
 288          BUFFERED_FLAGS, BUFFERED_FLASH_PAGE_BITS, BUFFERED_FLASH_PAGE_SIZE,
 289          BUFFERED_FLASH_BYTE_ADDR_MASK, 0,
 290          "Entry 1110 (Atmel)"},
 291         /* ATMEL AT45DB021B (buffered flash) */
 292         {0x3f000003, 0x7e808273, 0x00570081, 0x68848353, 0xaf000400,
 293          BUFFERED_FLAGS, BUFFERED_FLASH_PAGE_BITS, BUFFERED_FLASH_PAGE_SIZE,
 294          BUFFERED_FLASH_BYTE_ADDR_MASK, BUFFERED_FLASH_TOTAL_SIZE*2,
 295          "Buffered flash (256kB)"},
 296 };
 297
 298 /*
 299  * The BCM5709 controllers transparently handle the
 300  * differences between Atmel 264 byte pages and all
 301  * flash devices which use 256 byte pages, so no
 302  * logical-to-physical mapping is required in the
 303  * driver.
 304  */
 305 static struct flash_spec flash_5709 = {
 306         .flags          = BCE_NV_BUFFERED,
 307         .page_bits      = BCM5709_FLASH_PAGE_BITS,
 308         .page_size      = BCM5709_FLASH_PAGE_SIZE,
 309         .addr_mask      = BCM5709_FLASH_BYTE_ADDR_MASK,
 310         .total_size     = BUFFERED_FLASH_TOTAL_SIZE * 2,
 311         .name           = "5709/5716 buffered flash (256kB)",
 312 };
 313
 314
 315 /****************************************************************************/
 316 /* DragonFly device entry points.                                           */
 317 /****************************************************************************/
 318 static int      bce_probe(device_t);
 319 static int      bce_attach(device_t);
 320 static int      bce_detach(device_t);
 321 static void     bce_shutdown(device_t);
 322
 323 /****************************************************************************/
 324 /* BCE Debug Data Structure Dump Routines                                   */
 325 /****************************************************************************/
 326 #ifdef BCE_DEBUG
 327 static void     bce_dump_mbuf(struct bce_softc *, struct mbuf *);
 328 static void     bce_dump_tx_mbuf_chain(struct bce_softc *, int, int);
 329 static void     bce_dump_rx_mbuf_chain(struct bce_softc *, int, int);
 330 static void     bce_dump_txbd(struct bce_softc *, int, struct tx_bd *);
 331 static void     bce_dump_rxbd(struct bce_softc *, int, struct rx_bd *);
 332 static void     bce_dump_l2fhdr(struct bce_softc *, int,
 333                                 struct l2_fhdr *) __unused;
 334 static void     bce_dump_tx_chain(struct bce_softc *, int, int);
 335 static void     bce_dump_rx_chain(struct bce_softc *, int, int);
 336 static void     bce_dump_status_block(struct bce_softc *);
 337 static void     bce_dump_driver_state(struct bce_softc *);
 338 static void     bce_dump_stats_block(struct bce_softc *) __unused;
 339 static void     bce_dump_hw_state(struct bce_softc *);
 340 static void     bce_dump_txp_state(struct bce_softc *);
 341 static void     bce_dump_rxp_state(struct bce_softc *) __unused;
 342 static void     bce_dump_tpat_state(struct bce_softc *) __unused;
 343 static void     bce_freeze_controller(struct bce_softc *) __unused;
 344 static void     bce_unfreeze_controller(struct bce_softc *) __unused;
 345 static void     bce_breakpoint(struct bce_softc *);
 346 #endif  /* BCE_DEBUG */
 347
 348
 349 /****************************************************************************/
 350 /* BCE Register/Memory Access Routines                                      */
 351 /****************************************************************************/
 352 static uint32_t bce_reg_rd_ind(struct bce_softc *, uint32_t);
 353 static void     bce_reg_wr_ind(struct bce_softc *, uint32_t, uint32_t);
 354 static void     bce_shmem_wr(struct bce_softc *, uint32_t, uint32_t);
 355 static uint32_t bce_shmem_rd(struct bce_softc *, u32);
 356 static void     bce_ctx_wr(struct bce_softc *, uint32_t, uint32_t, uint32_t);
 357 static int      bce_miibus_read_reg(device_t, int, int);
 358 static int      bce_miibus_write_reg(device_t, int, int, int);
 359 static void     bce_miibus_statchg(device_t);
 360
 361
 362 /****************************************************************************/
 363 /* BCE NVRAM Access Routines                                                */
 364 /****************************************************************************/
 365 static int      bce_acquire_nvram_lock(struct bce_softc *);
 366 static int      bce_release_nvram_lock(struct bce_softc *);
 367 static void     bce_enable_nvram_access(struct bce_softc *);
 368 static void     bce_disable_nvram_access(struct bce_softc *);
 369 static int      bce_nvram_read_dword(struct bce_softc *, uint32_t, uint8_t *,
 370                                      uint32_t);
 371 static int      bce_init_nvram(struct bce_softc *);
 372 static int      bce_nvram_read(struct bce_softc *, uint32_t, uint8_t *, int);
 373 static int      bce_nvram_test(struct bce_softc *);
 374
 375 /****************************************************************************/
 376 /* BCE DMA Allocate/Free Routines                                           */
 377 /****************************************************************************/
 378 static int      bce_dma_alloc(struct bce_softc *);
 379 static void     bce_dma_free(struct bce_softc *);
 380 static void     bce_dma_map_addr(void *, bus_dma_segment_t *, int, int);
 381
 382 /****************************************************************************/
 383 /* BCE Firmware Synchronization and Load                                    */
 384 /****************************************************************************/
 385 static int      bce_fw_sync(struct bce_softc *, uint32_t);
 386 static void     bce_load_rv2p_fw(struct bce_softc *, uint32_t *,
 387                                  uint32_t, uint32_t);
 388 static void     bce_load_cpu_fw(struct bce_softc *, struct cpu_reg *,
 389                                 struct fw_info *);
 390 static void     bce_start_cpu(struct bce_softc *, struct cpu_reg *);
 391 static void     bce_halt_cpu(struct bce_softc *, struct cpu_reg *);
 392 static void     bce_start_rxp_cpu(struct bce_softc *);
 393 static void     bce_init_rxp_cpu(struct bce_softc *);
 394 static void     bce_init_txp_cpu(struct bce_softc *);
 395 static void     bce_init_tpat_cpu(struct bce_softc *);
 396 static void     bce_init_cp_cpu(struct bce_softc *);
 397 static void     bce_init_com_cpu(struct bce_softc *);
 398 static void     bce_init_cpus(struct bce_softc *);
 399
 400 static void     bce_stop(struct bce_softc *);
 401 static int      bce_reset(struct bce_softc *, uint32_t);
 402 static int      bce_chipinit(struct bce_softc *);
 403 static int      bce_blockinit(struct bce_softc *);
 404 static int      bce_newbuf_std(struct bce_softc *, uint16_t *, uint16_t *,
 405                                uint32_t *, int);
 406 static void     bce_setup_rxdesc_std(struct bce_softc *, uint16_t, uint32_t *);
 407 static void     bce_probe_pci_caps(struct bce_softc *);
 408 static void     bce_print_adapter_info(struct bce_softc *);
 409 static void     bce_get_media(struct bce_softc *);
 410
 411 static void     bce_init_tx_context(struct bce_softc *);
 412 static int      bce_init_tx_chain(struct bce_softc *);
 413 static void     bce_init_rx_context(struct bce_softc *);
 414 static int      bce_init_rx_chain(struct bce_softc *);
 415 static void     bce_free_rx_chain(struct bce_softc *);
 416 static void     bce_free_tx_chain(struct bce_softc *);
 417
 418 static int      bce_encap(struct bce_softc *, struct mbuf **);
 419 static void     bce_start(struct ifnet *);
 420 static int      bce_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
 421 static void     bce_watchdog(struct ifnet *);
 422 static int      bce_ifmedia_upd(struct ifnet *);
 423 static void     bce_ifmedia_sts(struct ifnet *, struct ifmediareq *);
 424 static void     bce_init(void *);
 425 static void     bce_mgmt_init(struct bce_softc *);
 426
 427 static void     bce_init_ctx(struct bce_softc *);
 428 static void     bce_get_mac_addr(struct bce_softc *);
 429 static void     bce_set_mac_addr(struct bce_softc *);
 430 static void     bce_phy_intr(struct bce_softc *);
 431 static void     bce_rx_intr(struct bce_softc *, int);
 432 static void     bce_tx_intr(struct bce_softc *);
 433 static void     bce_disable_intr(struct bce_softc *);
 434 static void     bce_enable_intr(struct bce_softc *, int);
 435
 436 #ifdef DEVICE_POLLING
 437 static void     bce_poll(struct ifnet *, enum poll_cmd, int);
 438 #endif
 439 static void     bce_intr(void *);
 440 static void     bce_set_rx_mode(struct bce_softc *);
 441 static void     bce_stats_update(struct bce_softc *);
 442 static void     bce_tick(void *);
 443 static void     bce_tick_serialized(struct bce_softc *);
 444 static void     bce_pulse(void *);
 445 static void     bce_add_sysctls(struct bce_softc *);
 446
 447 static void     bce_coal_change(struct bce_softc *);
 448 static int      bce_sysctl_tx_bds_int(SYSCTL_HANDLER_ARGS);
 449 static int      bce_sysctl_tx_bds(SYSCTL_HANDLER_ARGS);
 450 static int      bce_sysctl_tx_ticks_int(SYSCTL_HANDLER_ARGS);
 451 static int      bce_sysctl_tx_ticks(SYSCTL_HANDLER_ARGS);
 452 static int      bce_sysctl_rx_bds_int(SYSCTL_HANDLER_ARGS);
 453 static int      bce_sysctl_rx_bds(SYSCTL_HANDLER_ARGS);
 454 static int      bce_sysctl_rx_ticks_int(SYSCTL_HANDLER_ARGS);
 455 static int      bce_sysctl_rx_ticks(SYSCTL_HANDLER_ARGS);
 456 static int      bce_sysctl_coal_change(SYSCTL_HANDLER_ARGS,
 457                                        uint32_t *, uint32_t);
 458
 459 /*
 460  * NOTE:
 461  * Don't set bce_tx_ticks_int/bce_tx_ticks to 1023.  Linux's bnx2
 462  * takes 1023 as the TX ticks limit.  However, using 1023 will
 463  * cause 5708(B2) to generate extra interrupts (~2000/s) even when
 464  * there is _no_ network activity on the NIC.
 465  */
 466 static uint32_t bce_tx_bds_int = 255;           /* bcm: 20 */
 467 static uint32_t bce_tx_bds = 255;               /* bcm: 20 */
 468 static uint32_t bce_tx_ticks_int = 1022;        /* bcm: 80 */
 469 static uint32_t bce_tx_ticks = 1022;            /* bcm: 80 */
 470 static uint32_t bce_rx_bds_int = 128;           /* bcm: 6 */
 471 static uint32_t bce_rx_bds = 128;               /* bcm: 6 */
 472 static uint32_t bce_rx_ticks_int = 125;         /* bcm: 18 */
 473 static uint32_t bce_rx_ticks = 125;             /* bcm: 18 */
 474
 475 TUNABLE_INT("hw.bce.tx_bds_int", &bce_tx_bds_int);
 476 TUNABLE_INT("hw.bce.tx_bds", &bce_tx_bds);
 477 TUNABLE_INT("hw.bce.tx_ticks_int", &bce_tx_ticks_int);
 478 TUNABLE_INT("hw.bce.tx_ticks", &bce_tx_ticks);
 479 TUNABLE_INT("hw.bce.rx_bds_int", &bce_rx_bds_int);
 480 TUNABLE_INT("hw.bce.rx_bds", &bce_rx_bds);
 481 TUNABLE_INT("hw.bce.rx_ticks_int", &bce_rx_ticks_int);
 482 TUNABLE_INT("hw.bce.rx_ticks", &bce_rx_ticks);
 483
 484 /****************************************************************************/
 485 /* DragonFly device dispatch table.                                         */
 486 /****************************************************************************/
 487 static device_method_t bce_methods[] = {
 488         /* Device interface */
 489         DEVMETHOD(device_probe,         bce_probe),
 490         DEVMETHOD(device_attach,        bce_attach),
 491         DEVMETHOD(device_detach,        bce_detach),
 492         DEVMETHOD(device_shutdown,      bce_shutdown),
 493
 494         /* bus interface */
 495         DEVMETHOD(bus_print_child,      bus_generic_print_child),
 496         DEVMETHOD(bus_driver_added,     bus_generic_driver_added),
 497
 498         /* MII interface */
 499         DEVMETHOD(miibus_readreg,       bce_miibus_read_reg),
 500         DEVMETHOD(miibus_writereg,      bce_miibus_write_reg),
 501         DEVMETHOD(miibus_statchg,       bce_miibus_statchg),
 502
 503         { 0, 0 }
 504 };
 505
 506 static driver_t bce_driver = {
 507         "bce",
 508         bce_methods,
 509         sizeof(struct bce_softc)
 510 };
 511
 512 static devclass_t bce_devclass;
 513
 514
 515 DECLARE_DUMMY_MODULE(if_bce);
 516 MODULE_DEPEND(bce, miibus, 1, 1, 1);
 517 DRIVER_MODULE(if_bce, pci, bce_driver, bce_devclass, NULL, NULL);
 518 DRIVER_MODULE(miibus, bce, miibus_driver, miibus_devclass, NULL, NULL);
 519
 520
 521 /****************************************************************************/
 522 /* Device probe function.                                                   */
 523 /*                                                                          */
 524 /* Compares the device to the driver's list of supported devices and        */
 525 /* reports back to the OS whether this is the right driver for the device.  */
 526 /*                                                                          */
 527 /* Returns:                                                                 */
 528 /*   BUS_PROBE_DEFAULT on success, positive value on failure.               */
 529 /****************************************************************************/
 530 static int
 531 bce_probe(device_t dev)
 532 {
 533         struct bce_type *t;
 534         uint16_t vid, did, svid, sdid;
 535
 536         /* Get the data for the device to be probed. */
 537         vid  = pci_get_vendor(dev);
 538         did  = pci_get_device(dev);
 539         svid = pci_get_subvendor(dev);
 540         sdid = pci_get_subdevice(dev);
 541
 542         /* Look through the list of known devices for a match. */
 543         for (t = bce_devs; t->bce_name != NULL; ++t) {
 544                 if (vid == t->bce_vid && did == t->bce_did &&
 545                     (svid == t->bce_svid || t->bce_svid == PCI_ANY_ID) &&
 546                     (sdid == t->bce_sdid || t->bce_sdid == PCI_ANY_ID)) {
 547                         uint32_t revid = pci_read_config(dev, PCIR_REVID, 4);
 548                         char *descbuf;
 549
 550                         descbuf = kmalloc(BCE_DEVDESC_MAX, M_TEMP, M_WAITOK);
 551
 552                         /* Print out the device identity. */
 553                         ksnprintf(descbuf, BCE_DEVDESC_MAX, "%s (%c%d)",
 554                                   t->bce_name,
 555                                   ((revid & 0xf0) >> 4) + 'A', revid & 0xf);
 556
 557                         device_set_desc_copy(dev, descbuf);
 558                         kfree(descbuf, M_TEMP);
 559                         return 0;
 560                 }
 561         }
 562         return ENXIO;
 563 }
 564
 565
 566 /****************************************************************************/
 567 /* PCI Capabilities Probe Function.                                         */
 568 /*                                                                          */
 569 /* Walks the PCI capabiites list for the device to find what features are   */
 570 /* supported.                                                               */
 571 /*                                                                          */
 572 /* Returns:                                                                 */
 573 /*   None.                                                                  */
 574 /****************************************************************************/
 575 static void
 576 bce_print_adapter_info(struct bce_softc *sc)
 577 {
 578         device_printf(sc->bce_dev, "ASIC (0x%08X); ", sc->bce_chipid);
 579
 580         kprintf("Rev (%c%d); ", ((BCE_CHIP_ID(sc) & 0xf000) >> 12) + 'A',
 581                 ((BCE_CHIP_ID(sc) & 0x0ff0) >> 4));
 582
 583         /* Bus info. */
 584         if (sc->bce_flags & BCE_PCIE_FLAG) {
 585                 kprintf("Bus (PCIe x%d, ", sc->link_width);
 586                 switch (sc->link_speed) {
 587                 case 1:
 588                         kprintf("2.5Gbps); ");
 589                         break;
 590                 case 2:
 591                         kprintf("5Gbps); ");
 592                         break;
 593                 default:
 594                         kprintf("Unknown link speed); ");
 595                         break;
 596                 }
 597         } else {
 598                 kprintf("Bus (PCI%s, %s, %dMHz); ",
 599                     ((sc->bce_flags & BCE_PCIX_FLAG) ? "-X" : ""),
 600                     ((sc->bce_flags & BCE_PCI_32BIT_FLAG) ? "32-bit" : "64-bit"),
 601                     sc->bus_speed_mhz);
 602         }
 603
 604         /* Firmware version and device features. */
 605         kprintf("B/C (%s)", sc->bce_bc_ver);
 606
 607         if ((sc->bce_flags & BCE_MFW_ENABLE_FLAG) ||
 608             (sc->bce_phy_flags & BCE_PHY_2_5G_CAPABLE_FLAG)) {
 609                 kprintf("; Flags(");
 610                 if (sc->bce_flags & BCE_MFW_ENABLE_FLAG)
 611                         kprintf("MFW[%s]", sc->bce_mfw_ver);
 612                 if (sc->bce_phy_flags & BCE_PHY_2_5G_CAPABLE_FLAG)
 613                         kprintf(" 2.5G");
 614                 kprintf(")");
 615         }
 616         kprintf("\n");
 617 }
 618
 619
 620 /****************************************************************************/
 621 /* PCI Capabilities Probe Function.                                         */
 622 /*                                                                          */
 623 /* Walks the PCI capabiites list for the device to find what features are   */
 624 /* supported.                                                               */
 625 /*                                                                          */
 626 /* Returns:                                                                 */
 627 /*   None.                                                                  */
 628 /****************************************************************************/
 629 static void
 630 bce_probe_pci_caps(struct bce_softc *sc)
 631 {
 632         device_t dev = sc->bce_dev;
 633         uint8_t ptr;
 634
 635         if (pci_is_pcix(dev))
 636                 sc->bce_cap_flags |= BCE_PCIX_CAPABLE_FLAG;
 637
 638         ptr = pci_get_pciecap_ptr(dev);
 639         if (ptr) {
 640                 uint16_t link_status = pci_read_config(dev, ptr + 0x12, 2);
 641
 642                 sc->link_speed = link_status & 0xf;
 643                 sc->link_width = (link_status >> 4) & 0x3f;
 644                 sc->bce_cap_flags |= BCE_PCIE_CAPABLE_FLAG;
 645                 sc->bce_flags |= BCE_PCIE_FLAG;
 646         }
 647 }
 648
 649
 650 /****************************************************************************/
 651 /* Device attach function.                                                  */
 652 /*                                                                          */
 653 /* Allocates device resources, performs secondary chip identification,      */
 654 /* resets and initializes the hardware, and initializes driver instance     */
 655 /* variables.                                                               */
 656 /*                                                                          */
 657 /* Returns:                                                                 */
 658 /*   0 on success, positive value on failure.                               */
 659 /****************************************************************************/
 660 static int
 661 bce_attach(device_t dev)
 662 {
 663         struct bce_softc *sc = device_get_softc(dev);
 664         struct ifnet *ifp = &sc->arpcom.ac_if;
 665         uint32_t val;
 666         int rid, rc = 0;
 667         int i, j;
 668 #ifdef notyet
 669         int count;
 670 #endif
 671
 672         sc->bce_dev = dev;
 673         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
 674
 675         pci_enable_busmaster(dev);
 676
 677         bce_probe_pci_caps(sc);
 678
 679         /* Allocate PCI memory resources. */
 680         rid = PCIR_BAR(0);
 681         sc->bce_res_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
 682                                                  RF_ACTIVE | PCI_RF_DENSE);
 683         if (sc->bce_res_mem == NULL) {
 684                 device_printf(dev, "PCI memory allocation failed\n");
 685                 return ENXIO;
 686         }
 687         sc->bce_btag = rman_get_bustag(sc->bce_res_mem);
 688         sc->bce_bhandle = rman_get_bushandle(sc->bce_res_mem);
 689
 690         /* Allocate PCI IRQ resources. */
 691 #ifdef notyet
 692         count = pci_msi_count(dev);
 693         if (count == 1 && pci_alloc_msi(dev, &count) == 0) {
 694                 rid = 1;
 695                 sc->bce_flags |= BCE_USING_MSI_FLAG;
 696         } else
 697 #endif
 698         rid = 0;
 699         sc->bce_res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
 700                                                  RF_SHAREABLE | RF_ACTIVE);
 701         if (sc->bce_res_irq == NULL) {
 702                 device_printf(dev, "PCI map interrupt failed\n");
 703                 rc = ENXIO;
 704                 goto fail;
 705         }
 706
 707         /*
 708          * Configure byte swap and enable indirect register access.
 709          * Rely on CPU to do target byte swapping on big endian systems.
 710          * Access to registers outside of PCI configurtion space are not
 711          * valid until this is done.
 712          */
 713         pci_write_config(dev, BCE_PCICFG_MISC_CONFIG,
 714                          BCE_PCICFG_MISC_CONFIG_REG_WINDOW_ENA |
 715                          BCE_PCICFG_MISC_CONFIG_TARGET_MB_WORD_SWAP, 4);
 716
 717         /* Save ASIC revsion info. */
 718         sc->bce_chipid =  REG_RD(sc, BCE_MISC_ID);
 719
 720         /* Weed out any non-production controller revisions. */
 721         switch (BCE_CHIP_ID(sc)) {
 722         case BCE_CHIP_ID_5706_A0:
 723         case BCE_CHIP_ID_5706_A1:
 724         case BCE_CHIP_ID_5708_A0:
 725         case BCE_CHIP_ID_5708_B0:
 726         case BCE_CHIP_ID_5709_A0:
 727         case BCE_CHIP_ID_5709_B0:
 728         case BCE_CHIP_ID_5709_B1:
 729 #ifdef foo
 730         /* 5709C B2 seems to work fine */
 731         case BCE_CHIP_ID_5709_B2:
 732 #endif
 733                 device_printf(dev, "Unsupported chip id 0x%08x!\n",
 734                               BCE_CHIP_ID(sc));
 735                 rc = ENODEV;
 736                 goto fail;
 737         }
 738
 739         /*
 740          * Find the base address for shared memory access.
 741          * Newer versions of bootcode use a signature and offset
 742          * while older versions use a fixed address.
 743          */
 744         val = REG_RD_IND(sc, BCE_SHM_HDR_SIGNATURE);
 745         if ((val & BCE_SHM_HDR_SIGNATURE_SIG_MASK) ==
 746             BCE_SHM_HDR_SIGNATURE_SIG) {
 747                 /* Multi-port devices use different offsets in shared memory. */
 748                 sc->bce_shmem_base = REG_RD_IND(sc,
 749                     BCE_SHM_HDR_ADDR_0 + (pci_get_function(sc->bce_dev) << 2));
 750         } else {
 751                 sc->bce_shmem_base = HOST_VIEW_SHMEM_BASE;
 752         }
 753         DBPRINT(sc, BCE_INFO, "bce_shmem_base = 0x%08X\n", sc->bce_shmem_base);
 754
 755         /* Fetch the bootcode revision. */
 756         val = bce_shmem_rd(sc, BCE_DEV_INFO_BC_REV);
 757         for (i = 0, j = 0; i < 3; i++) {
 758                 uint8_t num;
 759                 int k, skip0;
 760
 761                 num = (uint8_t)(val >> (24 - (i * 8)));
 762                 for (k = 100, skip0 = 1; k >= 1; num %= k, k /= 10) {
 763                         if (num >= k || !skip0 || k == 1) {
 764                                 sc->bce_bc_ver[j++] = (num / k) + '0';
 765                                 skip0 = 0;
 766                         }
 767                 }
 768                 if (i != 2)
 769                         sc->bce_bc_ver[j++] = '.';
 770         }
 771
 772         /* Check if any management firwmare is running. */
 773         val = bce_shmem_rd(sc, BCE_PORT_FEATURE);
 774         if (val & BCE_PORT_FEATURE_ASF_ENABLED) {
 775                 sc->bce_flags |= BCE_MFW_ENABLE_FLAG;
 776
 777                 /* Allow time for firmware to enter the running state. */
 778                 for (i = 0; i < 30; i++) {
 779                         val = bce_shmem_rd(sc, BCE_BC_STATE_CONDITION);
 780                         if (val & BCE_CONDITION_MFW_RUN_MASK)
 781                                 break;
 782                         DELAY(10000);
 783                 }
 784         }
 785
 786         /* Check the current bootcode state. */
 787         val = bce_shmem_rd(sc, BCE_BC_STATE_CONDITION) &
 788             BCE_CONDITION_MFW_RUN_MASK;
 789         if (val != BCE_CONDITION_MFW_RUN_UNKNOWN &&
 790             val != BCE_CONDITION_MFW_RUN_NONE) {
 791                 uint32_t addr = bce_shmem_rd(sc, BCE_MFW_VER_PTR);
 792
 793                 for (i = 0, j = 0; j < 3; j++) {
 794                         val = bce_reg_rd_ind(sc, addr + j * 4);
 795                         val = bswap32(val);
 796                         memcpy(&sc->bce_mfw_ver[i], &val, 4);
 797                         i += 4;
 798                 }
 799         }
 800
 801         /* Get PCI bus information (speed and type). */
 802         val = REG_RD(sc, BCE_PCICFG_MISC_STATUS);
 803         if (val & BCE_PCICFG_MISC_STATUS_PCIX_DET) {
 804                 uint32_t clkreg;
 805
 806                 sc->bce_flags |= BCE_PCIX_FLAG;
 807
 808                 clkreg = REG_RD(sc, BCE_PCICFG_PCI_CLOCK_CONTROL_BITS) &
 809                          BCE_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET;
 810                 switch (clkreg) {
 811                 case BCE_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_133MHZ:
 812                         sc->bus_speed_mhz = 133;
 813                         break;
 814
 815                 case BCE_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_95MHZ:
 816                         sc->bus_speed_mhz = 100;
 817                         break;
 818
 819                 case BCE_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_66MHZ:
 820                 case BCE_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_80MHZ:
 821                         sc->bus_speed_mhz = 66;
 822                         break;
 823
 824                 case BCE_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_48MHZ:
 825                 case BCE_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_55MHZ:
 826                         sc->bus_speed_mhz = 50;
 827                         break;
 828
 829                 case BCE_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_LOW:
 830                 case BCE_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_32MHZ:
 831                 case BCE_PCICFG_PCI_CLOCK_CONTROL_BITS_PCI_CLK_SPD_DET_38MHZ:
 832                         sc->bus_speed_mhz = 33;
 833                         break;
 834                 }
 835         } else {
 836                 if (val & BCE_PCICFG_MISC_STATUS_M66EN)
 837                         sc->bus_speed_mhz = 66;
 838                 else
 839                         sc->bus_speed_mhz = 33;
 840         }
 841
 842         if (val & BCE_PCICFG_MISC_STATUS_32BIT_DET)
 843                 sc->bce_flags |= BCE_PCI_32BIT_FLAG;
 844
 845         /* Reset the controller. */
 846         rc = bce_reset(sc, BCE_DRV_MSG_CODE_RESET);
 847         if (rc != 0)
 848                 goto fail;
 849
 850         /* Initialize the controller. */
 851         rc = bce_chipinit(sc);
 852         if (rc != 0) {
 853                 device_printf(dev, "Controller initialization failed!\n");
 854                 goto fail;
 855         }
 856
 857         /* Perform NVRAM test. */
 858         rc = bce_nvram_test(sc);
 859         if (rc != 0) {
 860                 device_printf(dev, "NVRAM test failed!\n");
 861                 goto fail;
 862         }
 863
 864         /* Fetch the permanent Ethernet MAC address. */
 865         bce_get_mac_addr(sc);
 866
 867         /*
 868          * Trip points control how many BDs
 869          * should be ready before generating an
 870          * interrupt while ticks control how long
 871          * a BD can sit in the chain before
 872          * generating an interrupt.  Set the default
 873          * values for the RX and TX rings.
 874          */
 875
 876 #ifdef BCE_DRBUG
 877         /* Force more frequent interrupts. */
 878         sc->bce_tx_quick_cons_trip_int = 1;
 879         sc->bce_tx_quick_cons_trip     = 1;
 880         sc->bce_tx_ticks_int           = 0;
 881         sc->bce_tx_ticks               = 0;
 882
 883         sc->bce_rx_quick_cons_trip_int = 1;
 884         sc->bce_rx_quick_cons_trip     = 1;
 885         sc->bce_rx_ticks_int           = 0;
 886         sc->bce_rx_ticks               = 0;
 887 #else
 888         sc->bce_tx_quick_cons_trip_int = bce_tx_bds_int;
 889         sc->bce_tx_quick_cons_trip     = bce_tx_bds;
 890         sc->bce_tx_ticks_int           = bce_tx_ticks_int;
 891         sc->bce_tx_ticks               = bce_tx_ticks;
 892
 893         sc->bce_rx_quick_cons_trip_int = bce_rx_bds_int;
 894         sc->bce_rx_quick_cons_trip     = bce_rx_bds;
 895         sc->bce_rx_ticks_int           = bce_rx_ticks_int;
 896         sc->bce_rx_ticks               = bce_rx_ticks;
 897 #endif
 898
 899         /* Update statistics once every second. */
 900         sc->bce_stats_ticks = 1000000 & 0xffff00;
 901
 902         /* Find the media type for the adapter. */
 903         bce_get_media(sc);
 904
 905         /* Allocate DMA memory resources. */
 906         rc = bce_dma_alloc(sc);
 907         if (rc != 0) {
 908                 device_printf(dev, "DMA resource allocation failed!\n");
 909                 goto fail;
 910         }
 911
 912         /* Initialize the ifnet interface. */
 913         ifp->if_softc = sc;
 914         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
 915         ifp->if_ioctl = bce_ioctl;
 916         ifp->if_start = bce_start;
 917         ifp->if_init = bce_init;
 918         ifp->if_watchdog = bce_watchdog;
 919 #ifdef DEVICE_POLLING
 920         ifp->if_poll = bce_poll;
 921 #endif
 922         ifp->if_mtu = ETHERMTU;
 923         ifp->if_hwassist = BCE_IF_HWASSIST;
 924         ifp->if_capabilities = BCE_IF_CAPABILITIES;
 925         ifp->if_capenable = ifp->if_capabilities;
 926         ifq_set_maxlen(&ifp->if_snd, USABLE_TX_BD);
 927         ifq_set_ready(&ifp->if_snd);
 928
 929         if (sc->bce_phy_flags & BCE_PHY_2_5G_CAPABLE_FLAG)
 930                 ifp->if_baudrate = IF_Gbps(2.5);
 931         else
 932                 ifp->if_baudrate = IF_Gbps(1);
 933
 934         /* Assume a standard 1500 byte MTU size for mbuf allocations. */
 935         sc->mbuf_alloc_size  = MCLBYTES;
 936
 937         /* Look for our PHY. */
 938         rc = mii_phy_probe(dev, &sc->bce_miibus,
 939                            bce_ifmedia_upd, bce_ifmedia_sts);
 940         if (rc != 0) {
 941                 device_printf(dev, "PHY probe failed!\n");
 942                 goto fail;
 943         }
 944
 945         /* Attach to the Ethernet interface list. */
 946         ether_ifattach(ifp, sc->eaddr, NULL);
 947
 948         callout_init(&sc->bce_tick_callout);
 949         callout_init(&sc->bce_pulse_callout);
 950
 951         /* Hookup IRQ last. */
 952         rc = bus_setup_intr(dev, sc->bce_res_irq, INTR_MPSAFE, bce_intr, sc,
 953                             &sc->bce_intrhand, ifp->if_serializer);
 954         if (rc != 0) {
 955                 device_printf(dev, "Failed to setup IRQ!\n");
 956                 ether_ifdetach(ifp);
 957                 goto fail;
 958         }
 959
 960         ifp->if_cpuid = ithread_cpuid(rman_get_start(sc->bce_res_irq));
 961         KKASSERT(ifp->if_cpuid >= 0 && ifp->if_cpuid < ncpus);
 962
 963         /* Print some important debugging info. */
 964         DBRUN(BCE_INFO, bce_dump_driver_state(sc));
 965
 966         /* Add the supported sysctls to the kernel. */
 967         bce_add_sysctls(sc);
 968
 969         /*
 970          * The chip reset earlier notified the bootcode that
 971          * a driver is present.  We now need to start our pulse
 972          * routine so that the bootcode is reminded that we're
 973          * still running.
 974          */
 975         bce_pulse(sc);
 976
 977         /* Get the firmware running so IPMI still works */
 978         bce_mgmt_init(sc);
 979
 980         bce_print_adapter_info(sc);
 981
 982         return 0;
 983 fail:
 984         bce_detach(dev);
 985         return(rc);
 986 }
 987
 988
 989 /****************************************************************************/
 990 /* Device detach function.                                                  */
 991 /*                                                                          */
 992 /* Stops the controller, resets the controller, and releases resources.     */
 993 /*                                                                          */
 994 /* Returns:                                                                 */
 995 /*   0 on success, positive value on failure.                               */
 996 /****************************************************************************/
 997 static int
 998 bce_detach(device_t dev)
 999 {
1000         struct bce_softc *sc = device_get_softc(dev);
1001
1002         if (device_is_attached(dev)) {
1003                 struct ifnet *ifp = &sc->arpcom.ac_if;
1004                 uint32_t msg;
1005
1006                 /* Stop and reset the controller. */
1007                 lwkt_serialize_enter(ifp->if_serializer);
1008                 callout_stop(&sc->bce_pulse_callout);
1009                 bce_stop(sc);
1010                 if (sc->bce_flags & BCE_NO_WOL_FLAG)
1011                         msg = BCE_DRV_MSG_CODE_UNLOAD_LNK_DN;
1012                 else
1013                         msg = BCE_DRV_MSG_CODE_UNLOAD;
1014                 bce_reset(sc, msg);
1015                 bus_teardown_intr(dev, sc->bce_res_irq, sc->bce_intrhand);
1016                 lwkt_serialize_exit(ifp->if_serializer);
1017
1018                 ether_ifdetach(ifp);
1019         }
1020
1021         /* If we have a child device on the MII bus remove it too. */
1022         if (sc->bce_miibus)
1023                 device_delete_child(dev, sc->bce_miibus);
1024         bus_generic_detach(dev);
1025
1026         if (sc->bce_res_irq != NULL) {
1027                 bus_release_resource(dev, SYS_RES_IRQ,
1028                         sc->bce_flags & BCE_USING_MSI_FLAG ? 1 : 0,
1029                         sc->bce_res_irq);
1030         }
1031
1032 #ifdef notyet
1033         if (sc->bce_flags & BCE_USING_MSI_FLAG)
1034                 pci_release_msi(dev);
1035 #endif
1036
1037         if (sc->bce_res_mem != NULL) {
1038                 bus_release_resource(dev, SYS_RES_MEMORY, PCIR_BAR(0),
1039                                      sc->bce_res_mem);
1040         }
1041
1042         bce_dma_free(sc);
1043
1044         if (sc->bce_sysctl_tree != NULL)
1045                 sysctl_ctx_free(&sc->bce_sysctl_ctx);
1046
1047         return 0;
1048 }
1049
1050
1051 /****************************************************************************/
1052 /* Device shutdown function.                                                */
1053 /*                                                                          */
1054 /* Stops and resets the controller.                                         */
1055 /*                                                                          */
1056 /* Returns:                                                                 */
1057 /*   Nothing                                                                */
1058 /****************************************************************************/
1059 static void
1060 bce_shutdown(device_t dev)
1061 {
1062         struct bce_softc *sc = device_get_softc(dev);
1063         struct ifnet *ifp = &sc->arpcom.ac_if;
1064         uint32_t msg;
1065
1066         lwkt_serialize_enter(ifp->if_serializer);
1067         bce_stop(sc);
1068         if (sc->bce_flags & BCE_NO_WOL_FLAG)
1069                 msg = BCE_DRV_MSG_CODE_UNLOAD_LNK_DN;
1070         else
1071                 msg = BCE_DRV_MSG_CODE_UNLOAD;
1072         bce_reset(sc, msg);
1073         lwkt_serialize_exit(ifp->if_serializer);
1074 }
1075
1076
1077 /****************************************************************************/
1078 /* Indirect register read.                                                  */
1079 /*                                                                          */
1080 /* Reads NetXtreme II registers using an index/data register pair in PCI    */
1081 /* configuration space.  Using this mechanism avoids issues with posted     */
1082 /* reads but is much slower than memory-mapped I/O.                         */
1083 /*                                                                          */
1084 /* Returns:                                                                 */
1085 /*   The value of the register.                                             */
1086 /****************************************************************************/
1087 static uint32_t
1088 bce_reg_rd_ind(struct bce_softc *sc, uint32_t offset)
1089 {
1090         device_t dev = sc->bce_dev;
1091
1092         pci_write_config(dev, BCE_PCICFG_REG_WINDOW_ADDRESS, offset, 4);
1093 #ifdef BCE_DEBUG
1094         {
1095                 uint32_t val;
1096                 val = pci_read_config(dev, BCE_PCICFG_REG_WINDOW, 4);
1097                 DBPRINT(sc, BCE_EXCESSIVE,
1098                         "%s(); offset = 0x%08X, val = 0x%08X\n",
1099                         __func__, offset, val);
1100                 return val;
1101         }
1102 #else
1103         return pci_read_config(dev, BCE_PCICFG_REG_WINDOW, 4);
1104 #endif
1105 }
1106
1107
1108 /****************************************************************************/
1109 /* Indirect register write.                                                 */
1110 /*                                                                          */
1111 /* Writes NetXtreme II registers using an index/data register pair in PCI   */
1112 /* configuration space.  Using this mechanism avoids issues with posted     */
1113 /* writes but is muchh slower than memory-mapped I/O.                       */
1114 /*                                                                          */
1115 /* Returns:                                                                 */
1116 /*   Nothing.                                                               */
1117 /****************************************************************************/
1118 static void
1119 bce_reg_wr_ind(struct bce_softc *sc, uint32_t offset, uint32_t val)
1120 {
1121         device_t dev = sc->bce_dev;
1122
1123         DBPRINT(sc, BCE_EXCESSIVE, "%s(); offset = 0x%08X, val = 0x%08X\n",
1124                 __func__, offset, val);
1125
1126         pci_write_config(dev, BCE_PCICFG_REG_WINDOW_ADDRESS, offset, 4);
1127         pci_write_config(dev, BCE_PCICFG_REG_WINDOW, val, 4);
1128 }
1129
1130
1131 /****************************************************************************/
1132 /* Shared memory write.                                                     */
1133 /*                                                                          */
1134 /* Writes NetXtreme II shared memory region.                                */
1135 /*                                                                          */
1136 /* Returns:                                                                 */
1137 /*   Nothing.                                                               */
1138 /****************************************************************************/
1139 static void
1140 bce_shmem_wr(struct bce_softc *sc, uint32_t offset, uint32_t val)
1141 {
1142         bce_reg_wr_ind(sc, sc->bce_shmem_base + offset, val);
1143 }
1144
1145
1146 /****************************************************************************/
1147 /* Shared memory read.                                                      */
1148 /*                                                                          */
1149 /* Reads NetXtreme II shared memory region.                                 */
1150 /*                                                                          */
1151 /* Returns:                                                                 */
1152 /*   The 32 bit value read.                                                 */
1153 /****************************************************************************/
1154 static u32
1155 bce_shmem_rd(struct bce_softc *sc, uint32_t offset)
1156 {
1157         return bce_reg_rd_ind(sc, sc->bce_shmem_base + offset);
1158 }
1159
1160
1161 /****************************************************************************/
1162 /* Context memory write.                                                    */
1163 /*                                                                          */
1164 /* The NetXtreme II controller uses context memory to track connection      */
1165 /* information for L2 and higher network protocols.                         */
1166 /*                                                                          */
1167 /* Returns:                                                                 */
1168 /*   Nothing.                                                               */
1169 /****************************************************************************/
1170 static void
1171 bce_ctx_wr(struct bce_softc *sc, uint32_t cid_addr, uint32_t ctx_offset,
1172     uint32_t ctx_val)
1173 {
1174         uint32_t idx, offset = ctx_offset + cid_addr;
1175         uint32_t val, retry_cnt = 5;
1176
1177         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
1178             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
1179                 REG_WR(sc, BCE_CTX_CTX_DATA, ctx_val);
1180                 REG_WR(sc, BCE_CTX_CTX_CTRL, (offset | BCE_CTX_CTX_CTRL_WRITE_REQ));
1181
1182                 for (idx = 0; idx < retry_cnt; idx++) {
1183                         val = REG_RD(sc, BCE_CTX_CTX_CTRL);
1184                         if ((val & BCE_CTX_CTX_CTRL_WRITE_REQ) == 0)
1185                                 break;
1186                         DELAY(5);
1187                 }
1188
1189                 if (val & BCE_CTX_CTX_CTRL_WRITE_REQ) {
1190                         device_printf(sc->bce_dev,
1191                             "Unable to write CTX memory: "
1192                             "cid_addr = 0x%08X, offset = 0x%08X!\n",
1193                             cid_addr, ctx_offset);
1194                 }
1195         } else {
1196                 REG_WR(sc, BCE_CTX_DATA_ADR, offset);
1197                 REG_WR(sc, BCE_CTX_DATA, ctx_val);
1198         }
1199 }
1200
1201
1202 /****************************************************************************/
1203 /* PHY register read.                                                       */
1204 /*                                                                          */
1205 /* Implements register reads on the MII bus.                                */
1206 /*                                                                          */
1207 /* Returns:                                                                 */
1208 /*   The value of the register.                                             */
1209 /****************************************************************************/
1210 static int
1211 bce_miibus_read_reg(device_t dev, int phy, int reg)
1212 {
1213         struct bce_softc *sc = device_get_softc(dev);
1214         uint32_t val;
1215         int i;
1216
1217         /* Make sure we are accessing the correct PHY address. */
1218         if (phy != sc->bce_phy_addr) {
1219                 DBPRINT(sc, BCE_VERBOSE,
1220                         "Invalid PHY address %d for PHY read!\n", phy);
1221                 return 0;
1222         }
1223
1224         if (sc->bce_phy_flags & BCE_PHY_INT_MODE_AUTO_POLLING_FLAG) {
1225                 val = REG_RD(sc, BCE_EMAC_MDIO_MODE);
1226                 val &= ~BCE_EMAC_MDIO_MODE_AUTO_POLL;
1227
1228                 REG_WR(sc, BCE_EMAC_MDIO_MODE, val);
1229                 REG_RD(sc, BCE_EMAC_MDIO_MODE);
1230
1231                 DELAY(40);
1232         }
1233
1234         val = BCE_MIPHY(phy) | BCE_MIREG(reg) |
1235               BCE_EMAC_MDIO_COMM_COMMAND_READ | BCE_EMAC_MDIO_COMM_DISEXT |
1236               BCE_EMAC_MDIO_COMM_START_BUSY;
1237         REG_WR(sc, BCE_EMAC_MDIO_COMM, val);
1238
1239         for (i = 0; i < BCE_PHY_TIMEOUT; i++) {
1240                 DELAY(10);
1241
1242                 val = REG_RD(sc, BCE_EMAC_MDIO_COMM);
1243                 if (!(val & BCE_EMAC_MDIO_COMM_START_BUSY)) {
1244                         DELAY(5);
1245
1246                         val = REG_RD(sc, BCE_EMAC_MDIO_COMM);
1247                         val &= BCE_EMAC_MDIO_COMM_DATA;
1248                         break;
1249                 }
1250         }
1251
1252         if (val & BCE_EMAC_MDIO_COMM_START_BUSY) {
1253                 if_printf(&sc->arpcom.ac_if,
1254                           "Error: PHY read timeout! phy = %d, reg = 0x%04X\n",
1255                           phy, reg);
1256                 val = 0x0;
1257         } else {
1258                 val = REG_RD(sc, BCE_EMAC_MDIO_COMM);
1259         }
1260
1261         DBPRINT(sc, BCE_EXCESSIVE,
1262                 "%s(): phy = %d, reg = 0x%04X, val = 0x%04X\n",
1263                 __func__, phy, (uint16_t)reg & 0xffff, (uint16_t) val & 0xffff);
1264
1265         if (sc->bce_phy_flags & BCE_PHY_INT_MODE_AUTO_POLLING_FLAG) {
1266                 val = REG_RD(sc, BCE_EMAC_MDIO_MODE);
1267                 val |= BCE_EMAC_MDIO_MODE_AUTO_POLL;
1268
1269                 REG_WR(sc, BCE_EMAC_MDIO_MODE, val);
1270                 REG_RD(sc, BCE_EMAC_MDIO_MODE);
1271
1272                 DELAY(40);
1273         }
1274         return (val & 0xffff);
1275 }
1276
1277
1278 /****************************************************************************/
1279 /* PHY register write.                                                      */
1280 /*                                                                          */
1281 /* Implements register writes on the MII bus.                               */
1282 /*                                                                          */
1283 /* Returns:                                                                 */
1284 /*   The value of the register.                                             */
1285 /****************************************************************************/
1286 static int
1287 bce_miibus_write_reg(device_t dev, int phy, int reg, int val)
1288 {
1289         struct bce_softc *sc = device_get_softc(dev);
1290         uint32_t val1;
1291         int i;
1292
1293         /* Make sure we are accessing the correct PHY address. */
1294         if (phy != sc->bce_phy_addr) {
1295                 DBPRINT(sc, BCE_WARN,
1296                         "Invalid PHY address %d for PHY write!\n", phy);
1297                 return(0);
1298         }
1299
1300         DBPRINT(sc, BCE_EXCESSIVE,
1301                 "%s(): phy = %d, reg = 0x%04X, val = 0x%04X\n",
1302                 __func__, phy, (uint16_t)(reg & 0xffff),
1303                 (uint16_t)(val & 0xffff));
1304
1305         if (sc->bce_phy_flags & BCE_PHY_INT_MODE_AUTO_POLLING_FLAG) {
1306                 val1 = REG_RD(sc, BCE_EMAC_MDIO_MODE);
1307                 val1 &= ~BCE_EMAC_MDIO_MODE_AUTO_POLL;
1308
1309                 REG_WR(sc, BCE_EMAC_MDIO_MODE, val1);
1310                 REG_RD(sc, BCE_EMAC_MDIO_MODE);
1311
1312                 DELAY(40);
1313         }
1314
1315         val1 = BCE_MIPHY(phy) | BCE_MIREG(reg) | val |
1316                 BCE_EMAC_MDIO_COMM_COMMAND_WRITE |
1317                 BCE_EMAC_MDIO_COMM_START_BUSY | BCE_EMAC_MDIO_COMM_DISEXT;
1318         REG_WR(sc, BCE_EMAC_MDIO_COMM, val1);
1319
1320         for (i = 0; i < BCE_PHY_TIMEOUT; i++) {
1321                 DELAY(10);
1322
1323                 val1 = REG_RD(sc, BCE_EMAC_MDIO_COMM);
1324                 if (!(val1 & BCE_EMAC_MDIO_COMM_START_BUSY)) {
1325                         DELAY(5);
1326                         break;
1327                 }
1328         }
1329
1330         if (val1 & BCE_EMAC_MDIO_COMM_START_BUSY)
1331                 if_printf(&sc->arpcom.ac_if, "PHY write timeout!\n");
1332
1333         if (sc->bce_phy_flags & BCE_PHY_INT_MODE_AUTO_POLLING_FLAG) {
1334                 val1 = REG_RD(sc, BCE_EMAC_MDIO_MODE);
1335                 val1 |= BCE_EMAC_MDIO_MODE_AUTO_POLL;
1336
1337                 REG_WR(sc, BCE_EMAC_MDIO_MODE, val1);
1338                 REG_RD(sc, BCE_EMAC_MDIO_MODE);
1339
1340                 DELAY(40);
1341         }
1342         return 0;
1343 }
1344
1345
1346 /****************************************************************************/
1347 /* MII bus status change.                                                   */
1348 /*                                                                          */
1349 /* Called by the MII bus driver when the PHY establishes link to set the    */
1350 /* MAC interface registers.                                                 */
1351 /*                                                                          */
1352 /* Returns:                                                                 */
1353 /*   Nothing.                                                               */
1354 /****************************************************************************/
1355 static void
1356 bce_miibus_statchg(device_t dev)
1357 {
1358         struct bce_softc *sc = device_get_softc(dev);
1359         struct mii_data *mii = device_get_softc(sc->bce_miibus);
1360
1361         DBPRINT(sc, BCE_INFO, "mii_media_active = 0x%08X\n",
1362                 mii->mii_media_active);
1363
1364 #ifdef BCE_DEBUG
1365         /* Decode the interface media flags. */
1366         if_printf(&sc->arpcom.ac_if, "Media: ( ");
1367         switch(IFM_TYPE(mii->mii_media_active)) {
1368         case IFM_ETHER:
1369                 kprintf("Ethernet )");
1370                 break;
1371         default:
1372                 kprintf("Unknown )");
1373                 break;
1374         }
1375
1376         kprintf(" Media Options: ( ");
1377         switch(IFM_SUBTYPE(mii->mii_media_active)) {
1378         case IFM_AUTO:
1379                 kprintf("Autoselect )");
1380                 break;
1381         case IFM_MANUAL:
1382                 kprintf("Manual )");
1383                 break;
1384         case IFM_NONE:
1385                 kprintf("None )");
1386                 break;
1387         case IFM_10_T:
1388                 kprintf("10Base-T )");
1389                 break;
1390         case IFM_100_TX:
1391                 kprintf("100Base-TX )");
1392                 break;
1393         case IFM_1000_SX:
1394                 kprintf("1000Base-SX )");
1395                 break;
1396         case IFM_1000_T:
1397                 kprintf("1000Base-T )");
1398                 break;
1399         default:
1400                 kprintf("Other )");
1401                 break;
1402         }
1403
1404         kprintf(" Global Options: (");
1405         if (mii->mii_media_active & IFM_FDX)
1406                 kprintf(" FullDuplex");
1407         if (mii->mii_media_active & IFM_HDX)
1408                 kprintf(" HalfDuplex");
1409         if (mii->mii_media_active & IFM_LOOP)
1410                 kprintf(" Loopback");
1411         if (mii->mii_media_active & IFM_FLAG0)
1412                 kprintf(" Flag0");
1413         if (mii->mii_media_active & IFM_FLAG1)
1414                 kprintf(" Flag1");
1415         if (mii->mii_media_active & IFM_FLAG2)
1416                 kprintf(" Flag2");
1417         kprintf(" )\n");
1418 #endif
1419
1420         BCE_CLRBIT(sc, BCE_EMAC_MODE, BCE_EMAC_MODE_PORT);
1421
1422         /*
1423          * Set MII or GMII interface based on the speed negotiated
1424          * by the PHY.
1425          */
1426         if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T ||
1427             IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) {
1428                 DBPRINT(sc, BCE_INFO, "Setting GMII interface.\n");
1429                 BCE_SETBIT(sc, BCE_EMAC_MODE, BCE_EMAC_MODE_PORT_GMII);
1430         } else {
1431                 DBPRINT(sc, BCE_INFO, "Setting MII interface.\n");
1432                 BCE_SETBIT(sc, BCE_EMAC_MODE, BCE_EMAC_MODE_PORT_MII);
1433         }
1434
1435         /*
1436          * Set half or full duplex based on the duplicity negotiated
1437          * by the PHY.
1438          */
1439         if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
1440                 DBPRINT(sc, BCE_INFO, "Setting Full-Duplex interface.\n");
1441                 BCE_CLRBIT(sc, BCE_EMAC_MODE, BCE_EMAC_MODE_HALF_DUPLEX);
1442         } else {
1443                 DBPRINT(sc, BCE_INFO, "Setting Half-Duplex interface.\n");
1444                 BCE_SETBIT(sc, BCE_EMAC_MODE, BCE_EMAC_MODE_HALF_DUPLEX);
1445         }
1446 }
1447
1448
1449 /****************************************************************************/
1450 /* Acquire NVRAM lock.                                                      */
1451 /*                                                                          */
1452 /* Before the NVRAM can be accessed the caller must acquire an NVRAM lock.  */
1453 /* Locks 0 and 2 are reserved, lock 1 is used by firmware and lock 2 is     */
1454 /* for use by the driver.                                                   */
1455 /*                                                                          */
1456 /* Returns:                                                                 */
1457 /*   0 on success, positive value on failure.                               */
1458 /****************************************************************************/
1459 static int
1460 bce_acquire_nvram_lock(struct bce_softc *sc)
1461 {
1462         uint32_t val;
1463         int j;
1464
1465         DBPRINT(sc, BCE_VERBOSE, "Acquiring NVRAM lock.\n");
1466
1467         /* Request access to the flash interface. */
1468         REG_WR(sc, BCE_NVM_SW_ARB, BCE_NVM_SW_ARB_ARB_REQ_SET2);
1469         for (j = 0; j < NVRAM_TIMEOUT_COUNT; j++) {
1470                 val = REG_RD(sc, BCE_NVM_SW_ARB);
1471                 if (val & BCE_NVM_SW_ARB_ARB_ARB2)
1472                         break;
1473
1474                 DELAY(5);
1475         }
1476
1477         if (j >= NVRAM_TIMEOUT_COUNT) {
1478                 DBPRINT(sc, BCE_WARN, "Timeout acquiring NVRAM lock!\n");
1479                 return EBUSY;
1480         }
1481         return 0;
1482 }
1483
1484
1485 /****************************************************************************/
1486 /* Release NVRAM lock.                                                      */
1487 /*                                                                          */
1488 /* When the caller is finished accessing NVRAM the lock must be released.   */
1489 /* Locks 0 and 2 are reserved, lock 1 is used by firmware and lock 2 is     */
1490 /* for use by the driver.                                                   */
1491 /*                                                                          */
1492 /* Returns:                                                                 */
1493 /*   0 on success, positive value on failure.                               */
1494 /****************************************************************************/
1495 static int
1496 bce_release_nvram_lock(struct bce_softc *sc)
1497 {
1498         int j;
1499         uint32_t val;
1500
1501         DBPRINT(sc, BCE_VERBOSE, "Releasing NVRAM lock.\n");
1502
1503         /*
1504          * Relinquish nvram interface.
1505          */
1506         REG_WR(sc, BCE_NVM_SW_ARB, BCE_NVM_SW_ARB_ARB_REQ_CLR2);
1507
1508         for (j = 0; j < NVRAM_TIMEOUT_COUNT; j++) {
1509                 val = REG_RD(sc, BCE_NVM_SW_ARB);
1510                 if (!(val & BCE_NVM_SW_ARB_ARB_ARB2))
1511                         break;
1512
1513                 DELAY(5);
1514         }
1515
1516         if (j >= NVRAM_TIMEOUT_COUNT) {
1517                 DBPRINT(sc, BCE_WARN, "Timeout reeasing NVRAM lock!\n");
1518                 return EBUSY;
1519         }
1520         return 0;
1521 }
1522
1523
1524 /****************************************************************************/
1525 /* Enable NVRAM access.                                                     */
1526 /*                                                                          */
1527 /* Before accessing NVRAM for read or write operations the caller must      */
1528 /* enabled NVRAM access.                                                    */
1529 /*                                                                          */
1530 /* Returns:                                                                 */
1531 /*   Nothing.                                                               */
1532 /****************************************************************************/
1533 static void
1534 bce_enable_nvram_access(struct bce_softc *sc)
1535 {
1536         uint32_t val;
1537
1538         DBPRINT(sc, BCE_VERBOSE, "Enabling NVRAM access.\n");
1539
1540         val = REG_RD(sc, BCE_NVM_ACCESS_ENABLE);
1541         /* Enable both bits, even on read. */
1542         REG_WR(sc, BCE_NVM_ACCESS_ENABLE,
1543                val | BCE_NVM_ACCESS_ENABLE_EN | BCE_NVM_ACCESS_ENABLE_WR_EN);
1544 }
1545
1546
1547 /****************************************************************************/
1548 /* Disable NVRAM access.                                                    */
1549 /*                                                                          */
1550 /* When the caller is finished accessing NVRAM access must be disabled.     */
1551 /*                                                                          */
1552 /* Returns:                                                                 */
1553 /*   Nothing.                                                               */
1554 /****************************************************************************/
1555 static void
1556 bce_disable_nvram_access(struct bce_softc *sc)
1557 {
1558         uint32_t val;
1559
1560         DBPRINT(sc, BCE_VERBOSE, "Disabling NVRAM access.\n");
1561
1562         val = REG_RD(sc, BCE_NVM_ACCESS_ENABLE);
1563
1564         /* Disable both bits, even after read. */
1565         REG_WR(sc, BCE_NVM_ACCESS_ENABLE,
1566                val & ~(BCE_NVM_ACCESS_ENABLE_EN | BCE_NVM_ACCESS_ENABLE_WR_EN));
1567 }
1568
1569
1570 /****************************************************************************/
1571 /* Read a dword (32 bits) from NVRAM.                                       */
1572 /*                                                                          */
1573 /* Read a 32 bit word from NVRAM.  The caller is assumed to have already    */
1574 /* obtained the NVRAM lock and enabled the controller for NVRAM access.     */
1575 /*                                                                          */
1576 /* Returns:                                                                 */
1577 /*   0 on success and the 32 bit value read, positive value on failure.     */
1578 /****************************************************************************/
1579 static int
1580 bce_nvram_read_dword(struct bce_softc *sc, uint32_t offset, uint8_t *ret_val,
1581                      uint32_t cmd_flags)
1582 {
1583         uint32_t cmd;
1584         int i, rc = 0;
1585
1586         /* Build the command word. */
1587         cmd = BCE_NVM_COMMAND_DOIT | cmd_flags;
1588
1589         /* Calculate the offset for buffered flash. */
1590         if (sc->bce_flash_info->flags & BCE_NV_TRANSLATE) {
1591                 offset = ((offset / sc->bce_flash_info->page_size) <<
1592                           sc->bce_flash_info->page_bits) +
1593                          (offset % sc->bce_flash_info->page_size);
1594         }
1595
1596         /*
1597          * Clear the DONE bit separately, set the address to read,
1598          * and issue the read.
1599          */
1600         REG_WR(sc, BCE_NVM_COMMAND, BCE_NVM_COMMAND_DONE);
1601         REG_WR(sc, BCE_NVM_ADDR, offset & BCE_NVM_ADDR_NVM_ADDR_VALUE);
1602         REG_WR(sc, BCE_NVM_COMMAND, cmd);
1603
1604         /* Wait for completion. */
1605         for (i = 0; i < NVRAM_TIMEOUT_COUNT; i++) {
1606                 uint32_t val;
1607
1608                 DELAY(5);
1609
1610                 val = REG_RD(sc, BCE_NVM_COMMAND);
1611                 if (val & BCE_NVM_COMMAND_DONE) {
1612                         val = REG_RD(sc, BCE_NVM_READ);
1613
1614                         val = be32toh(val);
1615                         memcpy(ret_val, &val, 4);
1616                         break;
1617                 }
1618         }
1619
1620         /* Check for errors. */
1621         if (i >= NVRAM_TIMEOUT_COUNT) {
1622                 if_printf(&sc->arpcom.ac_if,
1623                           "Timeout error reading NVRAM at offset 0x%08X!\n",
1624                           offset);
1625                 rc = EBUSY;
1626         }
1627         return rc;
1628 }
1629
1630
1631 /****************************************************************************/
1632 /* Initialize NVRAM access.                                                 */
1633 /*                                                                          */
1634 /* Identify the NVRAM device in use and prepare the NVRAM interface to      */
1635 /* access that device.                                                      */
1636 /*                                                                          */
1637 /* Returns:                                                                 */
1638 /*   0 on success, positive value on failure.                               */
1639 /****************************************************************************/
1640 static int
1641 bce_init_nvram(struct bce_softc *sc)
1642 {
1643         uint32_t val;
1644         int j, entry_count, rc = 0;
1645         const struct flash_spec *flash;
1646
1647         DBPRINT(sc, BCE_VERBOSE_RESET, "Entering %s()\n", __func__);
1648
1649         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
1650             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
1651                 sc->bce_flash_info = &flash_5709;
1652                 goto bce_init_nvram_get_flash_size;
1653         }
1654
1655         /* Determine the selected interface. */
1656         val = REG_RD(sc, BCE_NVM_CFG1);
1657
1658         entry_count = sizeof(flash_table) / sizeof(struct flash_spec);
1659
1660         /*
1661          * Flash reconfiguration is required to support additional
1662          * NVRAM devices not directly supported in hardware.
1663          * Check if the flash interface was reconfigured
1664          * by the bootcode.
1665          */
1666
1667         if (val & 0x40000000) {
1668                 /* Flash interface reconfigured by bootcode. */
1669
1670                 DBPRINT(sc, BCE_INFO_LOAD,
1671                         "%s(): Flash WAS reconfigured.\n", __func__);
1672
1673                 for (j = 0, flash = flash_table; j < entry_count;
1674                      j++, flash++) {
1675                         if ((val & FLASH_BACKUP_STRAP_MASK) ==
1676                             (flash->config1 & FLASH_BACKUP_STRAP_MASK)) {
1677                                 sc->bce_flash_info = flash;
1678                                 break;
1679                         }
1680                 }
1681         } else {
1682                 /* Flash interface not yet reconfigured. */
1683                 uint32_t mask;
1684
1685                 DBPRINT(sc, BCE_INFO_LOAD,
1686                         "%s(): Flash was NOT reconfigured.\n", __func__);
1687
1688                 if (val & (1 << 23))
1689                         mask = FLASH_BACKUP_STRAP_MASK;
1690                 else
1691                         mask = FLASH_STRAP_MASK;
1692
1693                 /* Look for the matching NVRAM device configuration data. */
1694                 for (j = 0, flash = flash_table; j < entry_count;
1695                      j++, flash++) {
1696                         /* Check if the device matches any of the known devices. */
1697                         if ((val & mask) == (flash->strapping & mask)) {
1698                                 /* Found a device match. */
1699                                 sc->bce_flash_info = flash;
1700
1701                                 /* Request access to the flash interface. */
1702                                 rc = bce_acquire_nvram_lock(sc);
1703                                 if (rc != 0)
1704                                         return rc;
1705
1706                                 /* Reconfigure the flash interface. */
1707                                 bce_enable_nvram_access(sc);
1708                                 REG_WR(sc, BCE_NVM_CFG1, flash->config1);
1709                                 REG_WR(sc, BCE_NVM_CFG2, flash->config2);
1710                                 REG_WR(sc, BCE_NVM_CFG3, flash->config3);
1711                                 REG_WR(sc, BCE_NVM_WRITE1, flash->write1);
1712                                 bce_disable_nvram_access(sc);
1713                                 bce_release_nvram_lock(sc);
1714                                 break;
1715                         }
1716                 }
1717         }
1718
1719         /* Check if a matching device was found. */
1720         if (j == entry_count) {
1721                 sc->bce_flash_info = NULL;
1722                 if_printf(&sc->arpcom.ac_if, "Unknown Flash NVRAM found!\n");
1723                 rc = ENODEV;
1724         }
1725
1726 bce_init_nvram_get_flash_size:
1727         /* Write the flash config data to the shared memory interface. */
1728         val = bce_shmem_rd(sc, BCE_SHARED_HW_CFG_CONFIG2) &
1729             BCE_SHARED_HW_CFG2_NVM_SIZE_MASK;
1730         if (val)
1731                 sc->bce_flash_size = val;
1732         else
1733                 sc->bce_flash_size = sc->bce_flash_info->total_size;
1734
1735         DBPRINT(sc, BCE_INFO_LOAD, "%s() flash->total_size = 0x%08X\n",
1736                 __func__, sc->bce_flash_info->total_size);
1737
1738         DBPRINT(sc, BCE_VERBOSE_RESET, "Exiting %s()\n", __func__);
1739
1740         return rc;
1741 }
1742
1743
1744 /****************************************************************************/
1745 /* Read an arbitrary range of data from NVRAM.                              */
1746 /*                                                                          */
1747 /* Prepares the NVRAM interface for access and reads the requested data     */
1748 /* into the supplied buffer.                                                */
1749 /*                                                                          */
1750 /* Returns:                                                                 */
1751 /*   0 on success and the data read, positive value on failure.             */
1752 /****************************************************************************/
1753 static int
1754 bce_nvram_read(struct bce_softc *sc, uint32_t offset, uint8_t *ret_buf,
1755                int buf_size)
1756 {
1757         uint32_t cmd_flags, offset32, len32, extra;
1758         int rc = 0;
1759
1760         if (buf_size == 0)
1761                 return 0;
1762
1763         /* Request access to the flash interface. */
1764         rc = bce_acquire_nvram_lock(sc);
1765         if (rc != 0)
1766                 return rc;
1767
1768         /* Enable access to flash interface */
1769         bce_enable_nvram_access(sc);
1770
1771         len32 = buf_size;
1772         offset32 = offset;
1773         extra = 0;
1774
1775         cmd_flags = 0;
1776
1777         /* XXX should we release nvram lock if read_dword() fails? */
1778         if (offset32 & 3) {
1779                 uint8_t buf[4];
1780                 uint32_t pre_len;
1781
1782                 offset32 &= ~3;
1783                 pre_len = 4 - (offset & 3);
1784
1785                 if (pre_len >= len32) {
1786                         pre_len = len32;
1787                         cmd_flags = BCE_NVM_COMMAND_FIRST | BCE_NVM_COMMAND_LAST;
1788                 } else {
1789                         cmd_flags = BCE_NVM_COMMAND_FIRST;
1790                 }
1791
1792                 rc = bce_nvram_read_dword(sc, offset32, buf, cmd_flags);
1793                 if (rc)
1794                         return rc;
1795
1796                 memcpy(ret_buf, buf + (offset & 3), pre_len);
1797
1798                 offset32 += 4;
1799                 ret_buf += pre_len;
1800                 len32 -= pre_len;
1801         }
1802
1803         if (len32 & 3) {
1804                 extra = 4 - (len32 & 3);
1805                 len32 = (len32 + 4) & ~3;
1806         }
1807
1808         if (len32 == 4) {
1809                 uint8_t buf[4];
1810
1811                 if (cmd_flags)
1812                         cmd_flags = BCE_NVM_COMMAND_LAST;
1813                 else
1814                         cmd_flags = BCE_NVM_COMMAND_FIRST |
1815                                     BCE_NVM_COMMAND_LAST;
1816
1817                 rc = bce_nvram_read_dword(sc, offset32, buf, cmd_flags);
1818
1819                 memcpy(ret_buf, buf, 4 - extra);
1820         } else if (len32 > 0) {
1821                 uint8_t buf[4];
1822
1823                 /* Read the first word. */
1824                 if (cmd_flags)
1825                         cmd_flags = 0;
1826                 else
1827                         cmd_flags = BCE_NVM_COMMAND_FIRST;
1828
1829                 rc = bce_nvram_read_dword(sc, offset32, ret_buf, cmd_flags);
1830
1831                 /* Advance to the next dword. */
1832                 offset32 += 4;
1833                 ret_buf += 4;
1834                 len32 -= 4;
1835
1836                 while (len32 > 4 && rc == 0) {
1837                         rc = bce_nvram_read_dword(sc, offset32, ret_buf, 0);
1838
1839                         /* Advance to the next dword. */
1840                         offset32 += 4;
1841                         ret_buf += 4;
1842                         len32 -= 4;
1843                 }
1844
1845                 if (rc)
1846                         goto bce_nvram_read_locked_exit;
1847
1848                 cmd_flags = BCE_NVM_COMMAND_LAST;
1849                 rc = bce_nvram_read_dword(sc, offset32, buf, cmd_flags);
1850
1851                 memcpy(ret_buf, buf, 4 - extra);
1852         }
1853
1854 bce_nvram_read_locked_exit:
1855         /* Disable access to flash interface and release the lock. */
1856         bce_disable_nvram_access(sc);
1857         bce_release_nvram_lock(sc);
1858
1859         return rc;
1860 }
1861
1862
1863 /****************************************************************************/
1864 /* Verifies that NVRAM is accessible and contains valid data.               */
1865 /*                                                                          */
1866 /* Reads the configuration data from NVRAM and verifies that the CRC is     */
1867 /* correct.                                                                 */
1868 /*                                                                          */
1869 /* Returns:                                                                 */
1870 /*   0 on success, positive value on failure.                               */
1871 /****************************************************************************/
1872 static int
1873 bce_nvram_test(struct bce_softc *sc)
1874 {
1875         uint32_t buf[BCE_NVRAM_SIZE / 4];
1876         uint32_t magic, csum;
1877         uint8_t *data = (uint8_t *)buf;
1878         int rc = 0;
1879
1880         /*
1881          * Check that the device NVRAM is valid by reading
1882          * the magic value at offset 0.
1883          */
1884         rc = bce_nvram_read(sc, 0, data, 4);
1885         if (rc != 0)
1886                 return rc;
1887
1888         magic = be32toh(buf[0]);
1889         if (magic != BCE_NVRAM_MAGIC) {
1890                 if_printf(&sc->arpcom.ac_if,
1891                           "Invalid NVRAM magic value! Expected: 0x%08X, "
1892                           "Found: 0x%08X\n", BCE_NVRAM_MAGIC, magic);
1893                 return ENODEV;
1894         }
1895
1896         /*
1897          * Verify that the device NVRAM includes valid
1898          * configuration data.
1899          */
1900         rc = bce_nvram_read(sc, 0x100, data, BCE_NVRAM_SIZE);
1901         if (rc != 0)
1902                 return rc;
1903
1904         csum = ether_crc32_le(data, 0x100);
1905         if (csum != BCE_CRC32_RESIDUAL) {
1906                 if_printf(&sc->arpcom.ac_if,
1907                           "Invalid Manufacturing Information NVRAM CRC! "
1908                           "Expected: 0x%08X, Found: 0x%08X\n",
1909                           BCE_CRC32_RESIDUAL, csum);
1910                 return ENODEV;
1911         }
1912
1913         csum = ether_crc32_le(data + 0x100, 0x100);
1914         if (csum != BCE_CRC32_RESIDUAL) {
1915                 if_printf(&sc->arpcom.ac_if,
1916                           "Invalid Feature Configuration Information "
1917                           "NVRAM CRC! Expected: 0x%08X, Found: 08%08X\n",
1918                           BCE_CRC32_RESIDUAL, csum);
1919                 rc = ENODEV;
1920         }
1921         return rc;
1922 }
1923
1924
1925 /****************************************************************************/
1926 /* Identifies the current media type of the controller and sets the PHY     */
1927 /* address.                                                                 */
1928 /*                                                                          */
1929 /* Returns:                                                                 */
1930 /*   Nothing.                                                               */
1931 /****************************************************************************/
1932 static void
1933 bce_get_media(struct bce_softc *sc)
1934 {
1935         uint32_t val;
1936
1937         sc->bce_phy_addr = 1;
1938
1939         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
1940             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
1941                 uint32_t val = REG_RD(sc, BCE_MISC_DUAL_MEDIA_CTRL);
1942                 uint32_t bond_id = val & BCE_MISC_DUAL_MEDIA_CTRL_BOND_ID;
1943                 uint32_t strap;
1944
1945                 /*
1946                  * The BCM5709S is software configurable
1947                  * for Copper or SerDes operation.
1948                  */
1949                 if (bond_id == BCE_MISC_DUAL_MEDIA_CTRL_BOND_ID_C) {
1950                         return;
1951                 } else if (bond_id == BCE_MISC_DUAL_MEDIA_CTRL_BOND_ID_S) {
1952                         sc->bce_phy_flags |= BCE_PHY_SERDES_FLAG;
1953                         return;
1954                 }
1955
1956                 if (val & BCE_MISC_DUAL_MEDIA_CTRL_STRAP_OVERRIDE) {
1957                         strap = (val & BCE_MISC_DUAL_MEDIA_CTRL_PHY_CTRL) >> 21;
1958                 } else {
1959                         strap =
1960                         (val & BCE_MISC_DUAL_MEDIA_CTRL_PHY_CTRL_STRAP) >> 8;
1961                 }
1962
1963                 if (pci_get_function(sc->bce_dev) == 0) {
1964                         switch (strap) {
1965                         case 0x4:
1966                         case 0x5:
1967                         case 0x6:
1968                                 sc->bce_phy_flags |= BCE_PHY_SERDES_FLAG;
1969                                 break;
1970                         }
1971                 } else {
1972                         switch (strap) {
1973                         case 0x1:
1974                         case 0x2:
1975                         case 0x4:
1976                                 sc->bce_phy_flags |= BCE_PHY_SERDES_FLAG;
1977                                 break;
1978                         }
1979                 }
1980         } else if (BCE_CHIP_BOND_ID(sc) & BCE_CHIP_BOND_ID_SERDES_BIT) {
1981                 sc->bce_phy_flags |= BCE_PHY_SERDES_FLAG;
1982         }
1983
1984         if (sc->bce_phy_flags & BCE_PHY_SERDES_FLAG) {
1985                 sc->bce_flags |= BCE_NO_WOL_FLAG;
1986                 if (BCE_CHIP_NUM(sc) != BCE_CHIP_NUM_5706) {
1987                         sc->bce_phy_addr = 2;
1988                         val = bce_shmem_rd(sc, BCE_SHARED_HW_CFG_CONFIG);
1989                         if (val & BCE_SHARED_HW_CFG_PHY_2_5G)
1990                                 sc->bce_phy_flags |= BCE_PHY_2_5G_CAPABLE_FLAG;
1991                 }
1992         } else if ((BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5706) ||
1993             (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5708)) {
1994                 sc->bce_phy_flags |= BCE_PHY_CRC_FIX_FLAG;
1995         }
1996 }
1997
1998
1999 /****************************************************************************/
2000 /* Free any DMA memory owned by the driver.                                 */
2001 /*                                                                          */
2002 /* Scans through each data structre that requires DMA memory and frees      */
2003 /* the memory if allocated.                                                 */
2004 /*                                                                          */
2005 /* Returns:                                                                 */
2006 /*   Nothing.                                                               */
2007 /****************************************************************************/
2008 static void
2009 bce_dma_free(struct bce_softc *sc)
2010 {
2011         int i;
2012
2013         /* Destroy the status block. */
2014         if (sc->status_tag != NULL) {
2015                 if (sc->status_block != NULL) {
2016                         bus_dmamap_unload(sc->status_tag, sc->status_map);
2017                         bus_dmamem_free(sc->status_tag, sc->status_block,
2018                                         sc->status_map);
2019                 }
2020                 bus_dma_tag_destroy(sc->status_tag);
2021         }
2022
2023
2024         /* Destroy the statistics block. */
2025         if (sc->stats_tag != NULL) {
2026                 if (sc->stats_block != NULL) {
2027                         bus_dmamap_unload(sc->stats_tag, sc->stats_map);
2028                         bus_dmamem_free(sc->stats_tag, sc->stats_block,
2029                                         sc->stats_map);
2030                 }
2031                 bus_dma_tag_destroy(sc->stats_tag);
2032         }
2033
2034         /* Destroy the CTX DMA stuffs. */
2035         if (sc->ctx_tag != NULL) {
2036                 for (i = 0; i < sc->ctx_pages; i++) {
2037                         if (sc->ctx_block[i] != NULL) {
2038                                 bus_dmamap_unload(sc->ctx_tag, sc->ctx_map[i]);
2039                                 bus_dmamem_free(sc->ctx_tag, sc->ctx_block[i],
2040                                                 sc->ctx_map[i]);
2041                         }
2042                 }
2043                 bus_dma_tag_destroy(sc->ctx_tag);
2044         }
2045
2046         /* Destroy the TX buffer descriptor DMA stuffs. */
2047         if (sc->tx_bd_chain_tag != NULL) {
2048                 for (i = 0; i < TX_PAGES; i++) {
2049                         if (sc->tx_bd_chain[i] != NULL) {
2050                                 bus_dmamap_unload(sc->tx_bd_chain_tag,
2051                                                   sc->tx_bd_chain_map[i]);
2052                                 bus_dmamem_free(sc->tx_bd_chain_tag,
2053                                                 sc->tx_bd_chain[i],
2054                                                 sc->tx_bd_chain_map[i]);
2055                         }
2056                 }
2057                 bus_dma_tag_destroy(sc->tx_bd_chain_tag);
2058         }
2059
2060         /* Destroy the RX buffer descriptor DMA stuffs. */
2061         if (sc->rx_bd_chain_tag != NULL) {
2062                 for (i = 0; i < RX_PAGES; i++) {
2063                         if (sc->rx_bd_chain[i] != NULL) {
2064                                 bus_dmamap_unload(sc->rx_bd_chain_tag,
2065                                                   sc->rx_bd_chain_map[i]);
2066                                 bus_dmamem_free(sc->rx_bd_chain_tag,
2067                                                 sc->rx_bd_chain[i],
2068                                                 sc->rx_bd_chain_map[i]);
2069                         }
2070                 }
2071                 bus_dma_tag_destroy(sc->rx_bd_chain_tag);
2072         }
2073
2074         /* Destroy the TX mbuf DMA stuffs. */
2075         if (sc->tx_mbuf_tag != NULL) {
2076                 for (i = 0; i < TOTAL_TX_BD; i++) {
2077                         /* Must have been unloaded in bce_stop() */
2078                         KKASSERT(sc->tx_mbuf_ptr[i] == NULL);
2079                         bus_dmamap_destroy(sc->tx_mbuf_tag,
2080                                            sc->tx_mbuf_map[i]);
2081                 }
2082                 bus_dma_tag_destroy(sc->tx_mbuf_tag);
2083         }
2084
2085         /* Destroy the RX mbuf DMA stuffs. */
2086         if (sc->rx_mbuf_tag != NULL) {
2087                 for (i = 0; i < TOTAL_RX_BD; i++) {
2088                         /* Must have been unloaded in bce_stop() */
2089                         KKASSERT(sc->rx_mbuf_ptr[i] == NULL);
2090                         bus_dmamap_destroy(sc->rx_mbuf_tag,
2091                                            sc->rx_mbuf_map[i]);
2092                 }
2093                 bus_dmamap_destroy(sc->rx_mbuf_tag, sc->rx_mbuf_tmpmap);
2094                 bus_dma_tag_destroy(sc->rx_mbuf_tag);
2095         }
2096
2097         /* Destroy the parent tag */
2098         if (sc->parent_tag != NULL)
2099                 bus_dma_tag_destroy(sc->parent_tag);
2100 }
2101
2102
2103 /****************************************************************************/
2104 /* Get DMA memory from the OS.                                              */
2105 /*                                                                          */
2106 /* Validates that the OS has provided DMA buffers in response to a          */
2107 /* bus_dmamap_load() call and saves the physical address of those buffers.  */
2108 /* When the callback is used the OS will return 0 for the mapping function  */
2109 /* (bus_dmamap_load()) so we use the value of map_arg->maxsegs to pass any  */
2110 /* failures back to the caller.                                             */
2111 /*                                                                          */
2112 /* Returns:                                                                 */
2113 /*   Nothing.                                                               */
2114 /****************************************************************************/
2115 static void
2116 bce_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2117 {
2118         bus_addr_t *busaddr = arg;
2119
2120         /*
2121          * Simulate a mapping failure.
2122          * XXX not correct.
2123          */
2124         DBRUNIF(DB_RANDOMTRUE(bce_debug_dma_map_addr_failure),
2125                 kprintf("bce: %s(%d): Simulating DMA mapping error.\n",
2126                         __FILE__, __LINE__);
2127                 error = ENOMEM);
2128
2129         /* Check for an error and signal the caller that an error occurred. */
2130         if (error)
2131                 return;
2132
2133         KASSERT(nseg == 1, ("only one segment is allowed\n"));
2134         *busaddr = segs->ds_addr;
2135 }
2136
2137
2138 /****************************************************************************/
2139 /* Allocate any DMA memory needed by the driver.                            */
2140 /*                                                                          */
2141 /* Allocates DMA memory needed for the various global structures needed by  */
2142 /* hardware.                                                                */
2143 /*                                                                          */
2144 /* Memory alignment requirements:                                           */
2145 /* -----------------+----------+----------+----------+----------+           */
2146 /*  Data Structure  |   5706   |   5708   |   5709   |   5716   |           */
2147 /* -----------------+----------+----------+----------+----------+           */
2148 /* Status Block     | 8 bytes  | 8 bytes  | 16 bytes | 16 bytes |           */
2149 /* Statistics Block | 8 bytes  | 8 bytes  | 16 bytes | 16 bytes |           */
2150 /* RX Buffers       | 16 bytes | 16 bytes | 16 bytes | 16 bytes |           */
2151 /* PG Buffers       |   none   |   none   |   none   |   none   |           */
2152 /* TX Buffers       |   none   |   none   |   none   |   none   |           */
2153 /* Chain Pages(1)   |   4KiB   |   4KiB   |   4KiB   |   4KiB   |           */
2154 /* Context Pages(1) |   N/A    |   N/A    |   4KiB   |   4KiB   |           */
2155 /* -----------------+----------+----------+----------+----------+           */
2156 /*                                                                          */
2157 /* (1) Must align with CPU page size (BCM_PAGE_SZIE).                       */
2158 /*                                                                          */
2159 /* Returns:                                                                 */
2160 /*   0 for success, positive value for failure.                             */
2161 /****************************************************************************/
2162 static int
2163 bce_dma_alloc(struct bce_softc *sc)
2164 {
2165         struct ifnet *ifp = &sc->arpcom.ac_if;
2166         int i, j, rc = 0;
2167         bus_addr_t busaddr, max_busaddr;
2168         bus_size_t status_align, stats_align;
2169
2170         /*
2171          * The embedded PCIe to PCI-X bridge (EPB)
2172          * in the 5708 cannot address memory above
2173          * 40 bits (E7_5708CB1_23043 & E6_5708SB1_23043).
2174          */
2175         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5708)
2176                 max_busaddr = BCE_BUS_SPACE_MAXADDR;
2177         else
2178                 max_busaddr = BUS_SPACE_MAXADDR;
2179
2180         /*
2181          * BCM5709 and BCM5716 uses host memory as cache for context memory.
2182          */
2183         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
2184             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
2185                 sc->ctx_pages = BCE_CTX_BLK_SZ / BCM_PAGE_SIZE;
2186                 if (sc->ctx_pages == 0)
2187                         sc->ctx_pages = 1;
2188                 if (sc->ctx_pages > BCE_CTX_PAGES) {
2189                         device_printf(sc->bce_dev, "excessive ctx pages %d\n",
2190                             sc->ctx_pages);
2191                         return ENOMEM;
2192                 }
2193                 status_align = 16;
2194                 stats_align = 16;
2195         } else {
2196                 status_align = 8;
2197                 stats_align = 8;
2198         }
2199
2200         /*
2201          * Allocate the parent bus DMA tag appropriate for PCI.
2202          */
2203         rc = bus_dma_tag_create(NULL, 1, BCE_DMA_BOUNDARY,
2204                                 max_busaddr, BUS_SPACE_MAXADDR,
2205                                 NULL, NULL,
2206                                 BUS_SPACE_MAXSIZE_32BIT, 0,
2207                                 BUS_SPACE_MAXSIZE_32BIT,
2208                                 0, &sc->parent_tag);
2209         if (rc != 0) {
2210                 if_printf(ifp, "Could not allocate parent DMA tag!\n");
2211                 return rc;
2212         }
2213
2214         /*
2215          * Allocate status block.
2216          */
2217         sc->status_block = bus_dmamem_coherent_any(sc->parent_tag,
2218                                 status_align, BCE_STATUS_BLK_SZ,
2219                                 BUS_DMA_WAITOK | BUS_DMA_ZERO,
2220                                 &sc->status_tag, &sc->status_map,
2221                                 &sc->status_block_paddr);
2222         if (sc->status_block == NULL) {
2223                 if_printf(ifp, "Could not allocate status block!\n");
2224                 return ENOMEM;
2225         }
2226
2227         /*
2228          * Allocate statistics block.
2229          */
2230         sc->stats_block = bus_dmamem_coherent_any(sc->parent_tag,
2231                                 stats_align, BCE_STATS_BLK_SZ,
2232                                 BUS_DMA_WAITOK | BUS_DMA_ZERO,
2233                                 &sc->stats_tag, &sc->stats_map,
2234                                 &sc->stats_block_paddr);
2235         if (sc->stats_block == NULL) {
2236                 if_printf(ifp, "Could not allocate statistics block!\n");
2237                 return ENOMEM;
2238         }
2239
2240         /*
2241          * Allocate context block, if needed
2242          */
2243         if (sc->ctx_pages != 0) {
2244                 rc = bus_dma_tag_create(sc->parent_tag, BCM_PAGE_SIZE, 0,
2245                                         BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2246                                         NULL, NULL,
2247                                         BCM_PAGE_SIZE, 1, BCM_PAGE_SIZE,
2248                                         0, &sc->ctx_tag);
2249                 if (rc != 0) {
2250                         if_printf(ifp, "Could not allocate "
2251                                   "context block DMA tag!\n");
2252                         return rc;
2253                 }
2254
2255                 for (i = 0; i < sc->ctx_pages; i++) {
2256                         rc = bus_dmamem_alloc(sc->ctx_tag,
2257                                               (void **)&sc->ctx_block[i],
2258                                               BUS_DMA_WAITOK | BUS_DMA_ZERO |
2259                                               BUS_DMA_COHERENT,
2260                                               &sc->ctx_map[i]);
2261                         if (rc != 0) {
2262                                 if_printf(ifp, "Could not allocate %dth context "
2263                                           "DMA memory!\n", i);
2264                                 return rc;
2265                         }
2266
2267                         rc = bus_dmamap_load(sc->ctx_tag, sc->ctx_map[i],
2268                                              sc->ctx_block[i], BCM_PAGE_SIZE,
2269                                              bce_dma_map_addr, &busaddr,
2270                                              BUS_DMA_WAITOK);
2271                         if (rc != 0) {
2272                                 if (rc == EINPROGRESS) {
2273                                         panic("%s coherent memory loading "
2274                                               "is still in progress!", ifp->if_xname);
2275                                 }
2276                                 if_printf(ifp, "Could not map %dth context "
2277                                           "DMA memory!\n", i);
2278                                 bus_dmamem_free(sc->ctx_tag, sc->ctx_block[i],
2279                                                 sc->ctx_map[i]);
2280                                 sc->ctx_block[i] = NULL;
2281                                 return rc;
2282                         }
2283                         sc->ctx_paddr[i] = busaddr;
2284                 }
2285         }
2286
2287         /*
2288          * Create a DMA tag for the TX buffer descriptor chain,
2289          * allocate and clear the  memory, and fetch the
2290          * physical address of the block.
2291          */
2292         rc = bus_dma_tag_create(sc->parent_tag, BCM_PAGE_SIZE, 0,
2293                                 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2294                                 NULL, NULL,
2295                                 BCE_TX_CHAIN_PAGE_SZ, 1, BCE_TX_CHAIN_PAGE_SZ,
2296                                 0, &sc->tx_bd_chain_tag);
2297         if (rc != 0) {
2298                 if_printf(ifp, "Could not allocate "
2299                           "TX descriptor chain DMA tag!\n");
2300                 return rc;
2301         }
2302
2303         for (i = 0; i < TX_PAGES; i++) {
2304                 rc = bus_dmamem_alloc(sc->tx_bd_chain_tag,
2305                                       (void **)&sc->tx_bd_chain[i],
2306                                       BUS_DMA_WAITOK | BUS_DMA_ZERO |
2307                                       BUS_DMA_COHERENT,
2308                                       &sc->tx_bd_chain_map[i]);
2309                 if (rc != 0) {
2310                         if_printf(ifp, "Could not allocate %dth TX descriptor "
2311                                   "chain DMA memory!\n", i);
2312                         return rc;
2313                 }
2314
2315                 rc = bus_dmamap_load(sc->tx_bd_chain_tag,
2316                                      sc->tx_bd_chain_map[i],
2317                                      sc->tx_bd_chain[i], BCE_TX_CHAIN_PAGE_SZ,
2318                                      bce_dma_map_addr, &busaddr,
2319                                      BUS_DMA_WAITOK);
2320                 if (rc != 0) {
2321                         if (rc == EINPROGRESS) {
2322                                 panic("%s coherent memory loading "
2323                                       "is still in progress!", ifp->if_xname);
2324                         }
2325                         if_printf(ifp, "Could not map %dth TX descriptor "
2326                                   "chain DMA memory!\n", i);
2327                         bus_dmamem_free(sc->tx_bd_chain_tag,
2328                                         sc->tx_bd_chain[i],
2329                                         sc->tx_bd_chain_map[i]);
2330                         sc->tx_bd_chain[i] = NULL;
2331                         return rc;
2332                 }
2333
2334                 sc->tx_bd_chain_paddr[i] = busaddr;
2335                 /* DRC - Fix for 64 bit systems. */
2336                 DBPRINT(sc, BCE_INFO, "tx_bd_chain_paddr[%d] = 0x%08X\n",
2337                         i, (uint32_t)sc->tx_bd_chain_paddr[i]);
2338         }
2339
2340         /* Create a DMA tag for TX mbufs. */
2341         rc = bus_dma_tag_create(sc->parent_tag, 1, 0,
2342                                 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2343                                 NULL, NULL,
2344                                 /* BCE_MAX_JUMBO_ETHER_MTU_VLAN */MCLBYTES,
2345                                 BCE_MAX_SEGMENTS, MCLBYTES,
2346                                 BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK |
2347                                 BUS_DMA_ONEBPAGE,
2348                                 &sc->tx_mbuf_tag);
2349         if (rc != 0) {
2350                 if_printf(ifp, "Could not allocate TX mbuf DMA tag!\n");
2351                 return rc;
2352         }
2353
2354         /* Create DMA maps for the TX mbufs clusters. */
2355         for (i = 0; i < TOTAL_TX_BD; i++) {
2356                 rc = bus_dmamap_create(sc->tx_mbuf_tag,
2357                                        BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE,
2358                                        &sc->tx_mbuf_map[i]);
2359                 if (rc != 0) {
2360                         for (j = 0; j < i; ++j) {
2361                                 bus_dmamap_destroy(sc->tx_mbuf_tag,
2362                                                    sc->tx_mbuf_map[i]);
2363                         }
2364                         bus_dma_tag_destroy(sc->tx_mbuf_tag);
2365                         sc->tx_mbuf_tag = NULL;
2366
2367                         if_printf(ifp, "Unable to create "
2368                                   "%dth TX mbuf DMA map!\n", i);
2369                         return rc;
2370                 }
2371         }
2372
2373         /*
2374          * Create a DMA tag for the RX buffer descriptor chain,
2375          * allocate and clear the  memory, and fetch the physical
2376          * address of the blocks.
2377          */
2378         rc = bus_dma_tag_create(sc->parent_tag, BCM_PAGE_SIZE, 0,
2379                                 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2380                                 NULL, NULL,
2381                                 BCE_RX_CHAIN_PAGE_SZ, 1, BCE_RX_CHAIN_PAGE_SZ,
2382                                 0, &sc->rx_bd_chain_tag);
2383         if (rc != 0) {
2384                 if_printf(ifp, "Could not allocate "
2385                           "RX descriptor chain DMA tag!\n");
2386                 return rc;
2387         }
2388
2389         for (i = 0; i < RX_PAGES; i++) {
2390                 rc = bus_dmamem_alloc(sc->rx_bd_chain_tag,
2391                                       (void **)&sc->rx_bd_chain[i],
2392                                       BUS_DMA_WAITOK | BUS_DMA_ZERO |
2393                                       BUS_DMA_COHERENT,
2394                                       &sc->rx_bd_chain_map[i]);
2395                 if (rc != 0) {
2396                         if_printf(ifp, "Could not allocate %dth RX descriptor "
2397                                   "chain DMA memory!\n", i);
2398                         return rc;
2399                 }
2400
2401                 rc = bus_dmamap_load(sc->rx_bd_chain_tag,
2402                                      sc->rx_bd_chain_map[i],
2403                                      sc->rx_bd_chain[i], BCE_RX_CHAIN_PAGE_SZ,
2404                                      bce_dma_map_addr, &busaddr,
2405                                      BUS_DMA_WAITOK);
2406                 if (rc != 0) {
2407                         if (rc == EINPROGRESS) {
2408                                 panic("%s coherent memory loading "
2409                                       "is still in progress!", ifp->if_xname);
2410                         }
2411                         if_printf(ifp, "Could not map %dth RX descriptor "
2412                                   "chain DMA memory!\n", i);
2413                         bus_dmamem_free(sc->rx_bd_chain_tag,
2414                                         sc->rx_bd_chain[i],
2415                                         sc->rx_bd_chain_map[i]);
2416                         sc->rx_bd_chain[i] = NULL;
2417                         return rc;
2418                 }
2419
2420                 sc->rx_bd_chain_paddr[i] = busaddr;
2421                 /* DRC - Fix for 64 bit systems. */
2422                 DBPRINT(sc, BCE_INFO, "rx_bd_chain_paddr[%d] = 0x%08X\n",
2423                         i, (uint32_t)sc->rx_bd_chain_paddr[i]);
2424         }
2425
2426         /* Create a DMA tag for RX mbufs. */
2427         rc = bus_dma_tag_create(sc->parent_tag, BCE_DMA_RX_ALIGN, 0,
2428                                 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
2429                                 NULL, NULL,
2430                                 MCLBYTES, 1, MCLBYTES,
2431                                 BUS_DMA_ALLOCNOW | BUS_DMA_ALIGNED |
2432                                 BUS_DMA_WAITOK,
2433                                 &sc->rx_mbuf_tag);
2434         if (rc != 0) {
2435                 if_printf(ifp, "Could not allocate RX mbuf DMA tag!\n");
2436                 return rc;
2437         }
2438
2439         /* Create tmp DMA map for RX mbuf clusters. */
2440         rc = bus_dmamap_create(sc->rx_mbuf_tag, BUS_DMA_WAITOK,
2441                                &sc->rx_mbuf_tmpmap);
2442         if (rc != 0) {
2443                 bus_dma_tag_destroy(sc->rx_mbuf_tag);
2444                 sc->rx_mbuf_tag = NULL;
2445
2446                 if_printf(ifp, "Could not create RX mbuf tmp DMA map!\n");
2447                 return rc;
2448         }
2449
2450         /* Create DMA maps for the RX mbuf clusters. */
2451         for (i = 0; i < TOTAL_RX_BD; i++) {
2452                 rc = bus_dmamap_create(sc->rx_mbuf_tag, BUS_DMA_WAITOK,
2453                                        &sc->rx_mbuf_map[i]);
2454                 if (rc != 0) {
2455                         for (j = 0; j < i; ++j) {
2456                                 bus_dmamap_destroy(sc->rx_mbuf_tag,
2457                                                    sc->rx_mbuf_map[j]);
2458                         }
2459                         bus_dma_tag_destroy(sc->rx_mbuf_tag);
2460                         sc->rx_mbuf_tag = NULL;
2461
2462                         if_printf(ifp, "Unable to create "
2463                                   "%dth RX mbuf DMA map!\n", i);
2464                         return rc;
2465                 }
2466         }
2467         return 0;
2468 }
2469
2470
2471 /****************************************************************************/
2472 /* Firmware synchronization.                                                */
2473 /*                                                                          */
2474 /* Before performing certain events such as a chip reset, synchronize with  */
2475 /* the firmware first.                                                      */
2476 /*                                                                          */
2477 /* Returns:                                                                 */
2478 /*   0 for success, positive value for failure.                             */
2479 /****************************************************************************/
2480 static int
2481 bce_fw_sync(struct bce_softc *sc, uint32_t msg_data)
2482 {
2483         int i, rc = 0;
2484         uint32_t val;
2485
2486         /* Don't waste any time if we've timed out before. */
2487         if (sc->bce_fw_timed_out)
2488                 return EBUSY;
2489
2490         /* Increment the message sequence number. */
2491         sc->bce_fw_wr_seq++;
2492         msg_data |= sc->bce_fw_wr_seq;
2493
2494         DBPRINT(sc, BCE_VERBOSE, "bce_fw_sync(): msg_data = 0x%08X\n", msg_data);
2495
2496         /* Send the message to the bootcode driver mailbox. */
2497         bce_shmem_wr(sc, BCE_DRV_MB, msg_data);
2498
2499         /* Wait for the bootcode to acknowledge the message. */
2500         for (i = 0; i < FW_ACK_TIME_OUT_MS; i++) {
2501                 /* Check for a response in the bootcode firmware mailbox. */
2502                 val = bce_shmem_rd(sc, BCE_FW_MB);
2503                 if ((val & BCE_FW_MSG_ACK) == (msg_data & BCE_DRV_MSG_SEQ))
2504                         break;
2505                 DELAY(1000);
2506         }
2507
2508         /* If we've timed out, tell the bootcode that we've stopped waiting. */
2509         if ((val & BCE_FW_MSG_ACK) != (msg_data & BCE_DRV_MSG_SEQ) &&
2510             (msg_data & BCE_DRV_MSG_DATA) != BCE_DRV_MSG_DATA_WAIT0) {
2511                 if_printf(&sc->arpcom.ac_if,
2512                           "Firmware synchronization timeout! "
2513                           "msg_data = 0x%08X\n", msg_data);
2514
2515                 msg_data &= ~BCE_DRV_MSG_CODE;
2516                 msg_data |= BCE_DRV_MSG_CODE_FW_TIMEOUT;
2517
2518                 bce_shmem_wr(sc, BCE_DRV_MB, msg_data);
2519
2520                 sc->bce_fw_timed_out = 1;
2521                 rc = EBUSY;
2522         }
2523         return rc;
2524 }
2525
2526
2527 /****************************************************************************/
2528 /* Load Receive Virtual 2 Physical (RV2P) processor firmware.               */
2529 /*                                                                          */
2530 /* Returns:                                                                 */
2531 /*   Nothing.                                                               */
2532 /****************************************************************************/
2533 static void
2534 bce_load_rv2p_fw(struct bce_softc *sc, uint32_t *rv2p_code,
2535                  uint32_t rv2p_code_len, uint32_t rv2p_proc)
2536 {
2537         int i;
2538         uint32_t val;
2539
2540         for (i = 0; i < rv2p_code_len; i += 8) {
2541                 REG_WR(sc, BCE_RV2P_INSTR_HIGH, *rv2p_code);
2542                 rv2p_code++;
2543                 REG_WR(sc, BCE_RV2P_INSTR_LOW, *rv2p_code);
2544                 rv2p_code++;
2545
2546                 if (rv2p_proc == RV2P_PROC1) {
2547                         val = (i / 8) | BCE_RV2P_PROC1_ADDR_CMD_RDWR;
2548                         REG_WR(sc, BCE_RV2P_PROC1_ADDR_CMD, val);
2549                 } else {
2550                         val = (i / 8) | BCE_RV2P_PROC2_ADDR_CMD_RDWR;
2551                         REG_WR(sc, BCE_RV2P_PROC2_ADDR_CMD, val);
2552                 }
2553         }
2554
2555         /* Reset the processor, un-stall is done later. */
2556         if (rv2p_proc == RV2P_PROC1)
2557                 REG_WR(sc, BCE_RV2P_COMMAND, BCE_RV2P_COMMAND_PROC1_RESET);
2558         else
2559                 REG_WR(sc, BCE_RV2P_COMMAND, BCE_RV2P_COMMAND_PROC2_RESET);
2560 }
2561
2562
2563 /****************************************************************************/
2564 /* Load RISC processor firmware.                                            */
2565 /*                                                                          */
2566 /* Loads firmware from the file if_bcefw.h into the scratchpad memory       */
2567 /* associated with a particular processor.                                  */
2568 /*                                                                          */
2569 /* Returns:                                                                 */
2570 /*   Nothing.                                                               */
2571 /****************************************************************************/
2572 static void
2573 bce_load_cpu_fw(struct bce_softc *sc, struct cpu_reg *cpu_reg,
2574                 struct fw_info *fw)
2575 {
2576         uint32_t offset;
2577         int j;
2578
2579         bce_halt_cpu(sc, cpu_reg);
2580
2581         /* Load the Text area. */
2582         offset = cpu_reg->spad_base + (fw->text_addr - cpu_reg->mips_view_base);
2583         if (fw->text) {
2584                 for (j = 0; j < (fw->text_len / 4); j++, offset += 4)
2585                         REG_WR_IND(sc, offset, fw->text[j]);
2586         }
2587
2588         /* Load the Data area. */
2589         offset = cpu_reg->spad_base + (fw->data_addr - cpu_reg->mips_view_base);
2590         if (fw->data) {
2591                 for (j = 0; j < (fw->data_len / 4); j++, offset += 4)
2592                         REG_WR_IND(sc, offset, fw->data[j]);
2593         }
2594
2595         /* Load the SBSS area. */
2596         offset = cpu_reg->spad_base + (fw->sbss_addr - cpu_reg->mips_view_base);
2597         if (fw->sbss) {
2598                 for (j = 0; j < (fw->sbss_len / 4); j++, offset += 4)
2599                         REG_WR_IND(sc, offset, fw->sbss[j]);
2600         }
2601
2602         /* Load the BSS area. */
2603         offset = cpu_reg->spad_base + (fw->bss_addr - cpu_reg->mips_view_base);
2604         if (fw->bss) {
2605                 for (j = 0; j < (fw->bss_len/4); j++, offset += 4)
2606                         REG_WR_IND(sc, offset, fw->bss[j]);
2607         }
2608
2609         /* Load the Read-Only area. */
2610         offset = cpu_reg->spad_base +
2611                 (fw->rodata_addr - cpu_reg->mips_view_base);
2612         if (fw->rodata) {
2613                 for (j = 0; j < (fw->rodata_len / 4); j++, offset += 4)
2614                         REG_WR_IND(sc, offset, fw->rodata[j]);
2615         }
2616
2617         /* Clear the pre-fetch instruction and set the FW start address. */
2618         REG_WR_IND(sc, cpu_reg->inst, 0);
2619         REG_WR_IND(sc, cpu_reg->pc, fw->start_addr);
2620 }
2621
2622
2623 /****************************************************************************/
2624 /* Starts the RISC processor.                                               */
2625 /*                                                                          */
2626 /* Assumes the CPU starting address has already been set.                   */
2627 /*                                                                          */
2628 /* Returns:                                                                 */
2629 /*   Nothing.                                                               */
2630 /****************************************************************************/
2631 static void
2632 bce_start_cpu(struct bce_softc *sc, struct cpu_reg *cpu_reg)
2633 {
2634         uint32_t val;
2635
2636         /* Start the CPU. */
2637         val = REG_RD_IND(sc, cpu_reg->mode);
2638         val &= ~cpu_reg->mode_value_halt;
2639         REG_WR_IND(sc, cpu_reg->state, cpu_reg->state_value_clear);
2640         REG_WR_IND(sc, cpu_reg->mode, val);
2641 }
2642
2643
2644 /****************************************************************************/
2645 /* Halts the RISC processor.                                                */
2646 /*                                                                          */
2647 /* Returns:                                                                 */
2648 /*   Nothing.                                                               */
2649 /****************************************************************************/
2650 static void
2651 bce_halt_cpu(struct bce_softc *sc, struct cpu_reg *cpu_reg)
2652 {
2653         uint32_t val;
2654
2655         /* Halt the CPU. */
2656         val = REG_RD_IND(sc, cpu_reg->mode);
2657         val |= cpu_reg->mode_value_halt;
2658         REG_WR_IND(sc, cpu_reg->mode, val);
2659         REG_WR_IND(sc, cpu_reg->state, cpu_reg->state_value_clear);
2660 }
2661
2662
2663 /****************************************************************************/
2664 /* Start the RX CPU.                                                        */
2665 /*                                                                          */
2666 /* Returns:                                                                 */
2667 /*   Nothing.                                                               */
2668 /****************************************************************************/
2669 static void
2670 bce_start_rxp_cpu(struct bce_softc *sc)
2671 {
2672         struct cpu_reg cpu_reg;
2673
2674         cpu_reg.mode = BCE_RXP_CPU_MODE;
2675         cpu_reg.mode_value_halt = BCE_RXP_CPU_MODE_SOFT_HALT;
2676         cpu_reg.mode_value_sstep = BCE_RXP_CPU_MODE_STEP_ENA;
2677         cpu_reg.state = BCE_RXP_CPU_STATE;
2678         cpu_reg.state_value_clear = 0xffffff;
2679         cpu_reg.gpr0 = BCE_RXP_CPU_REG_FILE;
2680         cpu_reg.evmask = BCE_RXP_CPU_EVENT_MASK;
2681         cpu_reg.pc = BCE_RXP_CPU_PROGRAM_COUNTER;
2682         cpu_reg.inst = BCE_RXP_CPU_INSTRUCTION;
2683         cpu_reg.bp = BCE_RXP_CPU_HW_BREAKPOINT;
2684         cpu_reg.spad_base = BCE_RXP_SCRATCH;
2685         cpu_reg.mips_view_base = 0x8000000;
2686
2687         bce_start_cpu(sc, &cpu_reg);
2688 }
2689
2690
2691 /****************************************************************************/
2692 /* Initialize the RX CPU.                                                   */
2693 /*                                                                          */
2694 /* Returns:                                                                 */
2695 /*   Nothing.                                                               */
2696 /****************************************************************************/
2697 static void
2698 bce_init_rxp_cpu(struct bce_softc *sc)
2699 {
2700         struct cpu_reg cpu_reg;
2701         struct fw_info fw;
2702
2703         cpu_reg.mode = BCE_RXP_CPU_MODE;
2704         cpu_reg.mode_value_halt = BCE_RXP_CPU_MODE_SOFT_HALT;
2705         cpu_reg.mode_value_sstep = BCE_RXP_CPU_MODE_STEP_ENA;
2706         cpu_reg.state = BCE_RXP_CPU_STATE;
2707         cpu_reg.state_value_clear = 0xffffff;
2708         cpu_reg.gpr0 = BCE_RXP_CPU_REG_FILE;
2709         cpu_reg.evmask = BCE_RXP_CPU_EVENT_MASK;
2710         cpu_reg.pc = BCE_RXP_CPU_PROGRAM_COUNTER;
2711         cpu_reg.inst = BCE_RXP_CPU_INSTRUCTION;
2712         cpu_reg.bp = BCE_RXP_CPU_HW_BREAKPOINT;
2713         cpu_reg.spad_base = BCE_RXP_SCRATCH;
2714         cpu_reg.mips_view_base = 0x8000000;
2715
2716         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
2717             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
2718                 fw.ver_major = bce_RXP_b09FwReleaseMajor;
2719                 fw.ver_minor = bce_RXP_b09FwReleaseMinor;
2720                 fw.ver_fix = bce_RXP_b09FwReleaseFix;
2721                 fw.start_addr = bce_RXP_b09FwStartAddr;
2722
2723                 fw.text_addr = bce_RXP_b09FwTextAddr;
2724                 fw.text_len = bce_RXP_b09FwTextLen;
2725                 fw.text_index = 0;
2726                 fw.text = bce_RXP_b09FwText;
2727
2728                 fw.data_addr = bce_RXP_b09FwDataAddr;
2729                 fw.data_len = bce_RXP_b09FwDataLen;
2730                 fw.data_index = 0;
2731                 fw.data = bce_RXP_b09FwData;
2732
2733                 fw.sbss_addr = bce_RXP_b09FwSbssAddr;
2734                 fw.sbss_len = bce_RXP_b09FwSbssLen;
2735                 fw.sbss_index = 0;
2736                 fw.sbss = bce_RXP_b09FwSbss;
2737
2738                 fw.bss_addr = bce_RXP_b09FwBssAddr;
2739                 fw.bss_len = bce_RXP_b09FwBssLen;
2740                 fw.bss_index = 0;
2741                 fw.bss = bce_RXP_b09FwBss;
2742
2743                 fw.rodata_addr = bce_RXP_b09FwRodataAddr;
2744                 fw.rodata_len = bce_RXP_b09FwRodataLen;
2745                 fw.rodata_index = 0;
2746                 fw.rodata = bce_RXP_b09FwRodata;
2747         } else {
2748                 fw.ver_major = bce_RXP_b06FwReleaseMajor;
2749                 fw.ver_minor = bce_RXP_b06FwReleaseMinor;
2750                 fw.ver_fix = bce_RXP_b06FwReleaseFix;
2751                 fw.start_addr = bce_RXP_b06FwStartAddr;
2752
2753                 fw.text_addr = bce_RXP_b06FwTextAddr;
2754                 fw.text_len = bce_RXP_b06FwTextLen;
2755                 fw.text_index = 0;
2756                 fw.text = bce_RXP_b06FwText;
2757
2758                 fw.data_addr = bce_RXP_b06FwDataAddr;
2759                 fw.data_len = bce_RXP_b06FwDataLen;
2760                 fw.data_index = 0;
2761                 fw.data = bce_RXP_b06FwData;
2762
2763                 fw.sbss_addr = bce_RXP_b06FwSbssAddr;
2764                 fw.sbss_len = bce_RXP_b06FwSbssLen;
2765                 fw.sbss_index = 0;
2766                 fw.sbss = bce_RXP_b06FwSbss;
2767
2768                 fw.bss_addr = bce_RXP_b06FwBssAddr;
2769                 fw.bss_len = bce_RXP_b06FwBssLen;
2770                 fw.bss_index = 0;
2771                 fw.bss = bce_RXP_b06FwBss;
2772
2773                 fw.rodata_addr = bce_RXP_b06FwRodataAddr;
2774                 fw.rodata_len = bce_RXP_b06FwRodataLen;
2775                 fw.rodata_index = 0;
2776                 fw.rodata = bce_RXP_b06FwRodata;
2777         }
2778
2779         DBPRINT(sc, BCE_INFO_RESET, "Loading RX firmware.\n");
2780         bce_load_cpu_fw(sc, &cpu_reg, &fw);
2781         /* Delay RXP start until initialization is complete. */
2782 }
2783
2784
2785 /****************************************************************************/
2786 /* Initialize the TX CPU.                                                   */
2787 /*                                                                          */
2788 /* Returns:                                                                 */
2789 /*   Nothing.                                                               */
2790 /****************************************************************************/
2791 static void
2792 bce_init_txp_cpu(struct bce_softc *sc)
2793 {
2794         struct cpu_reg cpu_reg;
2795         struct fw_info fw;
2796
2797         cpu_reg.mode = BCE_TXP_CPU_MODE;
2798         cpu_reg.mode_value_halt = BCE_TXP_CPU_MODE_SOFT_HALT;
2799         cpu_reg.mode_value_sstep = BCE_TXP_CPU_MODE_STEP_ENA;
2800         cpu_reg.state = BCE_TXP_CPU_STATE;
2801         cpu_reg.state_value_clear = 0xffffff;
2802         cpu_reg.gpr0 = BCE_TXP_CPU_REG_FILE;
2803         cpu_reg.evmask = BCE_TXP_CPU_EVENT_MASK;
2804         cpu_reg.pc = BCE_TXP_CPU_PROGRAM_COUNTER;
2805         cpu_reg.inst = BCE_TXP_CPU_INSTRUCTION;
2806         cpu_reg.bp = BCE_TXP_CPU_HW_BREAKPOINT;
2807         cpu_reg.spad_base = BCE_TXP_SCRATCH;
2808         cpu_reg.mips_view_base = 0x8000000;
2809
2810         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
2811             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
2812                 fw.ver_major = bce_TXP_b09FwReleaseMajor;
2813                 fw.ver_minor = bce_TXP_b09FwReleaseMinor;
2814                 fw.ver_fix = bce_TXP_b09FwReleaseFix;
2815                 fw.start_addr = bce_TXP_b09FwStartAddr;
2816
2817                 fw.text_addr = bce_TXP_b09FwTextAddr;
2818                 fw.text_len = bce_TXP_b09FwTextLen;
2819                 fw.text_index = 0;
2820                 fw.text = bce_TXP_b09FwText;
2821
2822                 fw.data_addr = bce_TXP_b09FwDataAddr;
2823                 fw.data_len = bce_TXP_b09FwDataLen;
2824                 fw.data_index = 0;
2825                 fw.data = bce_TXP_b09FwData;
2826
2827                 fw.sbss_addr = bce_TXP_b09FwSbssAddr;
2828                 fw.sbss_len = bce_TXP_b09FwSbssLen;
2829                 fw.sbss_index = 0;
2830                 fw.sbss = bce_TXP_b09FwSbss;
2831
2832                 fw.bss_addr = bce_TXP_b09FwBssAddr;
2833                 fw.bss_len = bce_TXP_b09FwBssLen;
2834                 fw.bss_index = 0;
2835                 fw.bss = bce_TXP_b09FwBss;
2836
2837                 fw.rodata_addr = bce_TXP_b09FwRodataAddr;
2838                 fw.rodata_len = bce_TXP_b09FwRodataLen;
2839                 fw.rodata_index = 0;
2840                 fw.rodata = bce_TXP_b09FwRodata;
2841         } else {
2842                 fw.ver_major = bce_TXP_b06FwReleaseMajor;
2843                 fw.ver_minor = bce_TXP_b06FwReleaseMinor;
2844                 fw.ver_fix = bce_TXP_b06FwReleaseFix;
2845                 fw.start_addr = bce_TXP_b06FwStartAddr;
2846
2847                 fw.text_addr = bce_TXP_b06FwTextAddr;
2848                 fw.text_len = bce_TXP_b06FwTextLen;
2849                 fw.text_index = 0;
2850                 fw.text = bce_TXP_b06FwText;
2851
2852                 fw.data_addr = bce_TXP_b06FwDataAddr;
2853                 fw.data_len = bce_TXP_b06FwDataLen;
2854                 fw.data_index = 0;
2855                 fw.data = bce_TXP_b06FwData;
2856
2857                 fw.sbss_addr = bce_TXP_b06FwSbssAddr;
2858                 fw.sbss_len = bce_TXP_b06FwSbssLen;
2859                 fw.sbss_index = 0;
2860                 fw.sbss = bce_TXP_b06FwSbss;
2861
2862                 fw.bss_addr = bce_TXP_b06FwBssAddr;
2863                 fw.bss_len = bce_TXP_b06FwBssLen;
2864                 fw.bss_index = 0;
2865                 fw.bss = bce_TXP_b06FwBss;
2866
2867                 fw.rodata_addr = bce_TXP_b06FwRodataAddr;
2868                 fw.rodata_len = bce_TXP_b06FwRodataLen;
2869                 fw.rodata_index = 0;
2870                 fw.rodata = bce_TXP_b06FwRodata;
2871         }
2872
2873         DBPRINT(sc, BCE_INFO_RESET, "Loading TX firmware.\n");
2874         bce_load_cpu_fw(sc, &cpu_reg, &fw);
2875         bce_start_cpu(sc, &cpu_reg);
2876 }
2877
2878
2879 /****************************************************************************/
2880 /* Initialize the TPAT CPU.                                                 */
2881 /*                                                                          */
2882 /* Returns:                                                                 */
2883 /*   Nothing.                                                               */
2884 /****************************************************************************/
2885 static void
2886 bce_init_tpat_cpu(struct bce_softc *sc)
2887 {
2888         struct cpu_reg cpu_reg;
2889         struct fw_info fw;
2890
2891         cpu_reg.mode = BCE_TPAT_CPU_MODE;
2892         cpu_reg.mode_value_halt = BCE_TPAT_CPU_MODE_SOFT_HALT;
2893         cpu_reg.mode_value_sstep = BCE_TPAT_CPU_MODE_STEP_ENA;
2894         cpu_reg.state = BCE_TPAT_CPU_STATE;
2895         cpu_reg.state_value_clear = 0xffffff;
2896         cpu_reg.gpr0 = BCE_TPAT_CPU_REG_FILE;
2897         cpu_reg.evmask = BCE_TPAT_CPU_EVENT_MASK;
2898         cpu_reg.pc = BCE_TPAT_CPU_PROGRAM_COUNTER;
2899         cpu_reg.inst = BCE_TPAT_CPU_INSTRUCTION;
2900         cpu_reg.bp = BCE_TPAT_CPU_HW_BREAKPOINT;
2901         cpu_reg.spad_base = BCE_TPAT_SCRATCH;
2902         cpu_reg.mips_view_base = 0x8000000;
2903
2904         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
2905             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
2906                 fw.ver_major = bce_TPAT_b09FwReleaseMajor;
2907                 fw.ver_minor = bce_TPAT_b09FwReleaseMinor;
2908                 fw.ver_fix = bce_TPAT_b09FwReleaseFix;
2909                 fw.start_addr = bce_TPAT_b09FwStartAddr;
2910
2911                 fw.text_addr = bce_TPAT_b09FwTextAddr;
2912                 fw.text_len = bce_TPAT_b09FwTextLen;
2913                 fw.text_index = 0;
2914                 fw.text = bce_TPAT_b09FwText;
2915
2916                 fw.data_addr = bce_TPAT_b09FwDataAddr;
2917                 fw.data_len = bce_TPAT_b09FwDataLen;
2918                 fw.data_index = 0;
2919                 fw.data = bce_TPAT_b09FwData;
2920
2921                 fw.sbss_addr = bce_TPAT_b09FwSbssAddr;
2922                 fw.sbss_len = bce_TPAT_b09FwSbssLen;
2923                 fw.sbss_index = 0;
2924                 fw.sbss = bce_TPAT_b09FwSbss;
2925
2926                 fw.bss_addr = bce_TPAT_b09FwBssAddr;
2927                 fw.bss_len = bce_TPAT_b09FwBssLen;
2928                 fw.bss_index = 0;
2929                 fw.bss = bce_TPAT_b09FwBss;
2930
2931                 fw.rodata_addr = bce_TPAT_b09FwRodataAddr;
2932                 fw.rodata_len = bce_TPAT_b09FwRodataLen;
2933                 fw.rodata_index = 0;
2934                 fw.rodata = bce_TPAT_b09FwRodata;
2935         } else {
2936                 fw.ver_major = bce_TPAT_b06FwReleaseMajor;
2937                 fw.ver_minor = bce_TPAT_b06FwReleaseMinor;
2938                 fw.ver_fix = bce_TPAT_b06FwReleaseFix;
2939                 fw.start_addr = bce_TPAT_b06FwStartAddr;
2940
2941                 fw.text_addr = bce_TPAT_b06FwTextAddr;
2942                 fw.text_len = bce_TPAT_b06FwTextLen;
2943                 fw.text_index = 0;
2944                 fw.text = bce_TPAT_b06FwText;
2945
2946                 fw.data_addr = bce_TPAT_b06FwDataAddr;
2947                 fw.data_len = bce_TPAT_b06FwDataLen;
2948                 fw.data_index = 0;
2949                 fw.data = bce_TPAT_b06FwData;
2950
2951                 fw.sbss_addr = bce_TPAT_b06FwSbssAddr;
2952                 fw.sbss_len = bce_TPAT_b06FwSbssLen;
2953                 fw.sbss_index = 0;
2954                 fw.sbss = bce_TPAT_b06FwSbss;
2955
2956                 fw.bss_addr = bce_TPAT_b06FwBssAddr;
2957                 fw.bss_len = bce_TPAT_b06FwBssLen;
2958                 fw.bss_index = 0;
2959                 fw.bss = bce_TPAT_b06FwBss;
2960
2961                 fw.rodata_addr = bce_TPAT_b06FwRodataAddr;
2962                 fw.rodata_len = bce_TPAT_b06FwRodataLen;
2963                 fw.rodata_index = 0;
2964                 fw.rodata = bce_TPAT_b06FwRodata;
2965         }
2966
2967         DBPRINT(sc, BCE_INFO_RESET, "Loading TPAT firmware.\n");
2968         bce_load_cpu_fw(sc, &cpu_reg, &fw);
2969         bce_start_cpu(sc, &cpu_reg);
2970 }
2971
2972
2973 /****************************************************************************/
2974 /* Initialize the CP CPU.                                                   */
2975 /*                                                                          */
2976 /* Returns:                                                                 */
2977 /*   Nothing.                                                               */
2978 /****************************************************************************/
2979 static void
2980 bce_init_cp_cpu(struct bce_softc *sc)
2981 {
2982         struct cpu_reg cpu_reg;
2983         struct fw_info fw;
2984
2985         cpu_reg.mode = BCE_CP_CPU_MODE;
2986         cpu_reg.mode_value_halt = BCE_CP_CPU_MODE_SOFT_HALT;
2987         cpu_reg.mode_value_sstep = BCE_CP_CPU_MODE_STEP_ENA;
2988         cpu_reg.state = BCE_CP_CPU_STATE;
2989         cpu_reg.state_value_clear = 0xffffff;
2990         cpu_reg.gpr0 = BCE_CP_CPU_REG_FILE;
2991         cpu_reg.evmask = BCE_CP_CPU_EVENT_MASK;
2992         cpu_reg.pc = BCE_CP_CPU_PROGRAM_COUNTER;
2993         cpu_reg.inst = BCE_CP_CPU_INSTRUCTION;
2994         cpu_reg.bp = BCE_CP_CPU_HW_BREAKPOINT;
2995         cpu_reg.spad_base = BCE_CP_SCRATCH;
2996         cpu_reg.mips_view_base = 0x8000000;
2997
2998         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
2999             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
3000                 fw.ver_major = bce_CP_b09FwReleaseMajor;
3001                 fw.ver_minor = bce_CP_b09FwReleaseMinor;
3002                 fw.ver_fix = bce_CP_b09FwReleaseFix;
3003                 fw.start_addr = bce_CP_b09FwStartAddr;
3004
3005                 fw.text_addr = bce_CP_b09FwTextAddr;
3006                 fw.text_len = bce_CP_b09FwTextLen;
3007                 fw.text_index = 0;
3008                 fw.text = bce_CP_b09FwText;
3009
3010                 fw.data_addr = bce_CP_b09FwDataAddr;
3011                 fw.data_len = bce_CP_b09FwDataLen;
3012                 fw.data_index = 0;
3013                 fw.data = bce_CP_b09FwData;
3014
3015                 fw.sbss_addr = bce_CP_b09FwSbssAddr;
3016                 fw.sbss_len = bce_CP_b09FwSbssLen;
3017                 fw.sbss_index = 0;
3018                 fw.sbss = bce_CP_b09FwSbss;
3019
3020                 fw.bss_addr = bce_CP_b09FwBssAddr;
3021                 fw.bss_len = bce_CP_b09FwBssLen;
3022                 fw.bss_index = 0;
3023                 fw.bss = bce_CP_b09FwBss;
3024
3025                 fw.rodata_addr = bce_CP_b09FwRodataAddr;
3026                 fw.rodata_len = bce_CP_b09FwRodataLen;
3027                 fw.rodata_index = 0;
3028                 fw.rodata = bce_CP_b09FwRodata;
3029         } else {
3030                 fw.ver_major = bce_CP_b06FwReleaseMajor;
3031                 fw.ver_minor = bce_CP_b06FwReleaseMinor;
3032                 fw.ver_fix = bce_CP_b06FwReleaseFix;
3033                 fw.start_addr = bce_CP_b06FwStartAddr;
3034
3035                 fw.text_addr = bce_CP_b06FwTextAddr;
3036                 fw.text_len = bce_CP_b06FwTextLen;
3037                 fw.text_index = 0;
3038                 fw.text = bce_CP_b06FwText;
3039
3040                 fw.data_addr = bce_CP_b06FwDataAddr;
3041                 fw.data_len = bce_CP_b06FwDataLen;
3042                 fw.data_index = 0;
3043                 fw.data = bce_CP_b06FwData;
3044
3045                 fw.sbss_addr = bce_CP_b06FwSbssAddr;
3046                 fw.sbss_len = bce_CP_b06FwSbssLen;
3047                 fw.sbss_index = 0;
3048                 fw.sbss = bce_CP_b06FwSbss;
3049
3050                 fw.bss_addr = bce_CP_b06FwBssAddr;
3051                 fw.bss_len = bce_CP_b06FwBssLen;
3052                 fw.bss_index = 0;
3053                 fw.bss = bce_CP_b06FwBss;
3054
3055                 fw.rodata_addr = bce_CP_b06FwRodataAddr;
3056                 fw.rodata_len = bce_CP_b06FwRodataLen;
3057                 fw.rodata_index = 0;
3058                 fw.rodata = bce_CP_b06FwRodata;
3059         }
3060
3061         DBPRINT(sc, BCE_INFO_RESET, "Loading CP firmware.\n");
3062         bce_load_cpu_fw(sc, &cpu_reg, &fw);
3063         bce_start_cpu(sc, &cpu_reg);
3064 }
3065
3066
3067 /****************************************************************************/
3068 /* Initialize the COM CPU.                                                 */
3069 /*                                                                          */
3070 /* Returns:                                                                 */
3071 /*   Nothing.                                                               */
3072 /****************************************************************************/
3073 static void
3074 bce_init_com_cpu(struct bce_softc *sc)
3075 {
3076         struct cpu_reg cpu_reg;
3077         struct fw_info fw;
3078
3079         cpu_reg.mode = BCE_COM_CPU_MODE;
3080         cpu_reg.mode_value_halt = BCE_COM_CPU_MODE_SOFT_HALT;
3081         cpu_reg.mode_value_sstep = BCE_COM_CPU_MODE_STEP_ENA;
3082         cpu_reg.state = BCE_COM_CPU_STATE;
3083         cpu_reg.state_value_clear = 0xffffff;
3084         cpu_reg.gpr0 = BCE_COM_CPU_REG_FILE;
3085         cpu_reg.evmask = BCE_COM_CPU_EVENT_MASK;
3086         cpu_reg.pc = BCE_COM_CPU_PROGRAM_COUNTER;
3087         cpu_reg.inst = BCE_COM_CPU_INSTRUCTION;
3088         cpu_reg.bp = BCE_COM_CPU_HW_BREAKPOINT;
3089         cpu_reg.spad_base = BCE_COM_SCRATCH;
3090         cpu_reg.mips_view_base = 0x8000000;
3091
3092         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
3093             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
3094                 fw.ver_major = bce_COM_b09FwReleaseMajor;
3095                 fw.ver_minor = bce_COM_b09FwReleaseMinor;
3096                 fw.ver_fix = bce_COM_b09FwReleaseFix;
3097                 fw.start_addr = bce_COM_b09FwStartAddr;
3098
3099                 fw.text_addr = bce_COM_b09FwTextAddr;
3100                 fw.text_len = bce_COM_b09FwTextLen;
3101                 fw.text_index = 0;
3102                 fw.text = bce_COM_b09FwText;
3103
3104                 fw.data_addr = bce_COM_b09FwDataAddr;
3105                 fw.data_len = bce_COM_b09FwDataLen;
3106                 fw.data_index = 0;
3107                 fw.data = bce_COM_b09FwData;
3108
3109                 fw.sbss_addr = bce_COM_b09FwSbssAddr;
3110                 fw.sbss_len = bce_COM_b09FwSbssLen;
3111                 fw.sbss_index = 0;
3112                 fw.sbss = bce_COM_b09FwSbss;
3113
3114                 fw.bss_addr = bce_COM_b09FwBssAddr;
3115                 fw.bss_len = bce_COM_b09FwBssLen;
3116                 fw.bss_index = 0;
3117                 fw.bss = bce_COM_b09FwBss;
3118
3119                 fw.rodata_addr = bce_COM_b09FwRodataAddr;
3120                 fw.rodata_len = bce_COM_b09FwRodataLen;
3121                 fw.rodata_index = 0;
3122                 fw.rodata = bce_COM_b09FwRodata;
3123         } else {
3124                 fw.ver_major = bce_COM_b06FwReleaseMajor;
3125                 fw.ver_minor = bce_COM_b06FwReleaseMinor;
3126                 fw.ver_fix = bce_COM_b06FwReleaseFix;
3127                 fw.start_addr = bce_COM_b06FwStartAddr;
3128
3129                 fw.text_addr = bce_COM_b06FwTextAddr;
3130                 fw.text_len = bce_COM_b06FwTextLen;
3131                 fw.text_index = 0;
3132                 fw.text = bce_COM_b06FwText;
3133
3134                 fw.data_addr = bce_COM_b06FwDataAddr;
3135                 fw.data_len = bce_COM_b06FwDataLen;
3136                 fw.data_index = 0;
3137                 fw.data = bce_COM_b06FwData;
3138
3139                 fw.sbss_addr = bce_COM_b06FwSbssAddr;
3140                 fw.sbss_len = bce_COM_b06FwSbssLen;
3141                 fw.sbss_index = 0;
3142                 fw.sbss = bce_COM_b06FwSbss;
3143
3144                 fw.bss_addr = bce_COM_b06FwBssAddr;
3145                 fw.bss_len = bce_COM_b06FwBssLen;
3146                 fw.bss_index = 0;
3147                 fw.bss = bce_COM_b06FwBss;
3148
3149                 fw.rodata_addr = bce_COM_b06FwRodataAddr;
3150                 fw.rodata_len = bce_COM_b06FwRodataLen;
3151                 fw.rodata_index = 0;
3152                 fw.rodata = bce_COM_b06FwRodata;
3153         }
3154
3155         DBPRINT(sc, BCE_INFO_RESET, "Loading COM firmware.\n");
3156         bce_load_cpu_fw(sc, &cpu_reg, &fw);
3157         bce_start_cpu(sc, &cpu_reg);
3158 }
3159
3160
3161 /****************************************************************************/
3162 /* Initialize the RV2P, RX, TX, TPAT, COM, and CP CPUs.                     */
3163 /*                                                                          */
3164 /* Loads the firmware for each CPU and starts the CPU.                      */
3165 /*                                                                          */
3166 /* Returns:                                                                 */
3167 /*   Nothing.                                                               */
3168 /****************************************************************************/
3169 static void
3170 bce_init_cpus(struct bce_softc *sc)
3171 {
3172         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
3173             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
3174                 if (BCE_CHIP_REV(sc) == BCE_CHIP_REV_Ax) {
3175                         bce_load_rv2p_fw(sc, bce_xi90_rv2p_proc1,
3176                             sizeof(bce_xi90_rv2p_proc1), RV2P_PROC1);
3177                         bce_load_rv2p_fw(sc, bce_xi90_rv2p_proc2,
3178                             sizeof(bce_xi90_rv2p_proc2), RV2P_PROC2);
3179                 } else {
3180                         bce_load_rv2p_fw(sc, bce_xi_rv2p_proc1,
3181                             sizeof(bce_xi_rv2p_proc1), RV2P_PROC1);
3182                         bce_load_rv2p_fw(sc, bce_xi_rv2p_proc2,
3183                             sizeof(bce_xi_rv2p_proc2), RV2P_PROC2);
3184                 }
3185         } else {
3186                 bce_load_rv2p_fw(sc, bce_rv2p_proc1,
3187                     sizeof(bce_rv2p_proc1), RV2P_PROC1);
3188                 bce_load_rv2p_fw(sc, bce_rv2p_proc2,
3189                     sizeof(bce_rv2p_proc2), RV2P_PROC2);
3190         }
3191
3192         bce_init_rxp_cpu(sc);
3193         bce_init_txp_cpu(sc);
3194         bce_init_tpat_cpu(sc);
3195         bce_init_com_cpu(sc);
3196         bce_init_cp_cpu(sc);
3197 }
3198
3199
3200 /****************************************************************************/
3201 /* Initialize context memory.                                               */
3202 /*                                                                          */
3203 /* Clears the memory associated with each Context ID (CID).                 */
3204 /*                                                                          */
3205 /* Returns:                                                                 */
3206 /*   Nothing.                                                               */
3207 /****************************************************************************/
3208 static void
3209 bce_init_ctx(struct bce_softc *sc)
3210 {
3211         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
3212             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
3213                 /* DRC: Replace this constant value with a #define. */
3214                 int i, retry_cnt = 10;
3215                 uint32_t val;
3216
3217                 /*
3218                  * BCM5709 context memory may be cached
3219                  * in host memory so prepare the host memory
3220                  * for access.
3221                  */
3222                 val = BCE_CTX_COMMAND_ENABLED | BCE_CTX_COMMAND_MEM_INIT |
3223                     (1 << 12);
3224                 val |= (BCM_PAGE_BITS - 8) << 16;
3225                 REG_WR(sc, BCE_CTX_COMMAND, val);
3226
3227                 /* Wait for mem init command to complete. */
3228                 for (i = 0; i < retry_cnt; i++) {
3229                         val = REG_RD(sc, BCE_CTX_COMMAND);
3230                         if (!(val & BCE_CTX_COMMAND_MEM_INIT))
3231                                 break;
3232                         DELAY(2);
3233                 }
3234
3235                 for (i = 0; i < sc->ctx_pages; i++) {
3236                         int j;
3237
3238                         /*
3239                          * Set the physical address of the context
3240                          * memory cache.
3241                          */
3242                         REG_WR(sc, BCE_CTX_HOST_PAGE_TBL_DATA0,
3243                             BCE_ADDR_LO(sc->ctx_paddr[i] & 0xfffffff0) |
3244                             BCE_CTX_HOST_PAGE_TBL_DATA0_VALID);
3245                         REG_WR(sc, BCE_CTX_HOST_PAGE_TBL_DATA1,
3246                             BCE_ADDR_HI(sc->ctx_paddr[i]));
3247                         REG_WR(sc, BCE_CTX_HOST_PAGE_TBL_CTRL,
3248                             i | BCE_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ);
3249
3250                         /*
3251                          * Verify that the context memory write was successful.
3252                          */
3253                         for (j = 0; j < retry_cnt; j++) {
3254                                 val = REG_RD(sc, BCE_CTX_HOST_PAGE_TBL_CTRL);
3255                                 if ((val &
3256                                     BCE_CTX_HOST_PAGE_TBL_CTRL_WRITE_REQ) == 0)
3257                                         break;
3258                                 DELAY(5);
3259                         }
3260                 }
3261         } else {
3262                 uint32_t vcid_addr, offset;
3263
3264                 /*
3265                  * For the 5706/5708, context memory is local to
3266                  * the controller, so initialize the controller
3267                  * context memory.
3268                  */
3269
3270                 vcid_addr = GET_CID_ADDR(96);
3271                 while (vcid_addr) {
3272                         vcid_addr -= PHY_CTX_SIZE;
3273
3274                         REG_WR(sc, BCE_CTX_VIRT_ADDR, 0);
3275                         REG_WR(sc, BCE_CTX_PAGE_TBL, vcid_addr);
3276
3277                         for (offset = 0; offset < PHY_CTX_SIZE; offset += 4)
3278                                 CTX_WR(sc, 0x00, offset, 0);
3279
3280                         REG_WR(sc, BCE_CTX_VIRT_ADDR, vcid_addr);
3281                         REG_WR(sc, BCE_CTX_PAGE_TBL, vcid_addr);
3282                 }
3283         }
3284 }
3285
3286
3287 /****************************************************************************/
3288 /* Fetch the permanent MAC address of the controller.                       */
3289 /*                                                                          */
3290 /* Returns:                                                                 */
3291 /*   Nothing.                                                               */
3292 /****************************************************************************/
3293 static void
3294 bce_get_mac_addr(struct bce_softc *sc)
3295 {
3296         uint32_t mac_lo = 0, mac_hi = 0;
3297
3298         /*
3299          * The NetXtreme II bootcode populates various NIC
3300          * power-on and runtime configuration items in a
3301          * shared memory area.  The factory configured MAC
3302          * address is available from both NVRAM and the
3303          * shared memory area so we'll read the value from
3304          * shared memory for speed.
3305          */
3306
3307         mac_hi = bce_shmem_rd(sc,  BCE_PORT_HW_CFG_MAC_UPPER);
3308         mac_lo = bce_shmem_rd(sc, BCE_PORT_HW_CFG_MAC_LOWER);
3309
3310         if (mac_lo == 0 && mac_hi == 0) {
3311                 if_printf(&sc->arpcom.ac_if, "Invalid Ethernet address!\n");
3312         } else {
3313                 sc->eaddr[0] = (u_char)(mac_hi >> 8);
3314                 sc->eaddr[1] = (u_char)(mac_hi >> 0);
3315                 sc->eaddr[2] = (u_char)(mac_lo >> 24);
3316                 sc->eaddr[3] = (u_char)(mac_lo >> 16);
3317                 sc->eaddr[4] = (u_char)(mac_lo >> 8);
3318                 sc->eaddr[5] = (u_char)(mac_lo >> 0);
3319         }
3320
3321         DBPRINT(sc, BCE_INFO, "Permanent Ethernet address = %6D\n", sc->eaddr, ":");
3322 }
3323
3324
3325 /****************************************************************************/
3326 /* Program the MAC address.                                                 */
3327 /*                                                                          */
3328 /* Returns:                                                                 */
3329 /*   Nothing.                                                               */
3330 /****************************************************************************/
3331 static void
3332 bce_set_mac_addr(struct bce_softc *sc)
3333 {
3334         const uint8_t *mac_addr = sc->eaddr;
3335         uint32_t val;
3336
3337         DBPRINT(sc, BCE_INFO, "Setting Ethernet address = %6D\n",
3338                 sc->eaddr, ":");
3339
3340         val = (mac_addr[0] << 8) | mac_addr[1];
3341         REG_WR(sc, BCE_EMAC_MAC_MATCH0, val);
3342
3343         val = (mac_addr[2] << 24) |
3344               (mac_addr[3] << 16) |
3345               (mac_addr[4] << 8) |
3346               mac_addr[5];
3347         REG_WR(sc, BCE_EMAC_MAC_MATCH1, val);
3348 }
3349
3350
3351 /****************************************************************************/
3352 /* Stop the controller.                                                     */
3353 /*                                                                          */
3354 /* Returns:                                                                 */
3355 /*   Nothing.                                                               */
3356 /****************************************************************************/
3357 static void
3358 bce_stop(struct bce_softc *sc)
3359 {
3360         struct ifnet *ifp = &sc->arpcom.ac_if;
3361         struct mii_data *mii = device_get_softc(sc->bce_miibus);
3362         struct ifmedia_entry *ifm;
3363         int mtmp, itmp;
3364
3365         ASSERT_SERIALIZED(ifp->if_serializer);
3366
3367         callout_stop(&sc->bce_tick_callout);
3368
3369         /* Disable the transmit/receive blocks. */
3370         REG_WR(sc, BCE_MISC_ENABLE_CLR_BITS, BCE_MISC_ENABLE_CLR_DEFAULT);
3371         REG_RD(sc, BCE_MISC_ENABLE_CLR_BITS);
3372         DELAY(20);
3373
3374         bce_disable_intr(sc);
3375
3376         /* Free the RX lists. */
3377         bce_free_rx_chain(sc);
3378
3379         /* Free TX buffers. */
3380         bce_free_tx_chain(sc);
3381
3382         /*
3383          * Isolate/power down the PHY, but leave the media selection
3384          * unchanged so that things will be put back to normal when
3385          * we bring the interface back up.
3386          *
3387          * 'mii' may be NULL if bce_stop() is called by bce_detach().
3388          */
3389         if (mii != NULL) {
3390                 itmp = ifp->if_flags;
3391                 ifp->if_flags |= IFF_UP;
3392                 ifm = mii->mii_media.ifm_cur;
3393                 mtmp = ifm->ifm_media;
3394                 ifm->ifm_media = IFM_ETHER | IFM_NONE;
3395                 mii_mediachg(mii);
3396                 ifm->ifm_media = mtmp;
3397                 ifp->if_flags = itmp;
3398         }
3399
3400         sc->bce_link = 0;
3401         sc->bce_coalchg_mask = 0;
3402
3403         ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
3404         ifp->if_timer = 0;
3405 }
3406
3407
3408 static int
3409 bce_reset(struct bce_softc *sc, uint32_t reset_code)
3410 {
3411         uint32_t val;
3412         int i, rc = 0;
3413
3414         /* Wait for pending PCI transactions to complete. */
3415         REG_WR(sc, BCE_MISC_ENABLE_CLR_BITS,
3416                BCE_MISC_ENABLE_CLR_BITS_TX_DMA_ENABLE |
3417                BCE_MISC_ENABLE_CLR_BITS_DMA_ENGINE_ENABLE |
3418                BCE_MISC_ENABLE_CLR_BITS_RX_DMA_ENABLE |
3419                BCE_MISC_ENABLE_CLR_BITS_HOST_COALESCE_ENABLE);
3420         val = REG_RD(sc, BCE_MISC_ENABLE_CLR_BITS);
3421         DELAY(5);
3422
3423         /* Disable DMA */
3424         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
3425             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
3426                 val = REG_RD(sc, BCE_MISC_NEW_CORE_CTL);
3427                 val &= ~BCE_MISC_NEW_CORE_CTL_DMA_ENABLE;
3428                 REG_WR(sc, BCE_MISC_NEW_CORE_CTL, val);
3429         }
3430
3431         /* Assume bootcode is running. */
3432         sc->bce_fw_timed_out = 0;
3433
3434         /* Give the firmware a chance to prepare for the reset. */
3435         rc = bce_fw_sync(sc, BCE_DRV_MSG_DATA_WAIT0 | reset_code);
3436         if (rc) {
3437                 if_printf(&sc->arpcom.ac_if,
3438                           "Firmware is not ready for reset\n");
3439                 return rc;
3440         }
3441
3442         /* Set a firmware reminder that this is a soft reset. */
3443         bce_shmem_wr(sc, BCE_DRV_RESET_SIGNATURE,
3444             BCE_DRV_RESET_SIGNATURE_MAGIC);
3445
3446         /* Dummy read to force the chip to complete all current transactions. */
3447         val = REG_RD(sc, BCE_MISC_ID);
3448
3449         /* Chip reset. */
3450         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
3451             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
3452                 REG_WR(sc, BCE_MISC_COMMAND, BCE_MISC_COMMAND_SW_RESET);
3453                 REG_RD(sc, BCE_MISC_COMMAND);
3454                 DELAY(5);
3455
3456                 val = BCE_PCICFG_MISC_CONFIG_REG_WINDOW_ENA |
3457                     BCE_PCICFG_MISC_CONFIG_TARGET_MB_WORD_SWAP;
3458
3459                 pci_write_config(sc->bce_dev, BCE_PCICFG_MISC_CONFIG, val, 4);
3460         } else {
3461                 val = BCE_PCICFG_MISC_CONFIG_CORE_RST_REQ |
3462                     BCE_PCICFG_MISC_CONFIG_REG_WINDOW_ENA |
3463                     BCE_PCICFG_MISC_CONFIG_TARGET_MB_WORD_SWAP;
3464                 REG_WR(sc, BCE_PCICFG_MISC_CONFIG, val);
3465
3466                 /* Allow up to 30us for reset to complete. */
3467                 for (i = 0; i < 10; i++) {
3468                         val = REG_RD(sc, BCE_PCICFG_MISC_CONFIG);
3469                         if ((val & (BCE_PCICFG_MISC_CONFIG_CORE_RST_REQ |
3470                             BCE_PCICFG_MISC_CONFIG_CORE_RST_BSY)) == 0)
3471                                 break;
3472                         DELAY(10);
3473                 }
3474
3475                 /* Check that reset completed successfully. */
3476                 if (val & (BCE_PCICFG_MISC_CONFIG_CORE_RST_REQ |
3477                     BCE_PCICFG_MISC_CONFIG_CORE_RST_BSY)) {
3478                         if_printf(&sc->arpcom.ac_if, "Reset failed!\n");
3479                         return EBUSY;
3480                 }
3481         }
3482
3483         /* Make sure byte swapping is properly configured. */
3484         val = REG_RD(sc, BCE_PCI_SWAP_DIAG0);
3485         if (val != 0x01020304) {
3486                 if_printf(&sc->arpcom.ac_if, "Byte swap is incorrect!\n");
3487                 return ENODEV;
3488         }
3489
3490         /* Just completed a reset, assume that firmware is running again. */
3491         sc->bce_fw_timed_out = 0;
3492
3493         /* Wait for the firmware to finish its initialization. */
3494         rc = bce_fw_sync(sc, BCE_DRV_MSG_DATA_WAIT1 | reset_code);
3495         if (rc) {
3496                 if_printf(&sc->arpcom.ac_if,
3497                           "Firmware did not complete initialization!\n");
3498         }
3499         return rc;
3500 }
3501
3502
3503 static int
3504 bce_chipinit(struct bce_softc *sc)
3505 {
3506         uint32_t val;
3507         int rc = 0;
3508
3509         /* Make sure the interrupt is not active. */
3510         REG_WR(sc, BCE_PCICFG_INT_ACK_CMD, BCE_PCICFG_INT_ACK_CMD_MASK_INT);
3511         REG_RD(sc, BCE_PCICFG_INT_ACK_CMD);
3512
3513         /*
3514          * Initialize DMA byte/word swapping, configure the number of DMA
3515          * channels and PCI clock compensation delay.
3516          */
3517         val = BCE_DMA_CONFIG_DATA_BYTE_SWAP |
3518               BCE_DMA_CONFIG_DATA_WORD_SWAP |
3519 #if BYTE_ORDER == BIG_ENDIAN
3520               BCE_DMA_CONFIG_CNTL_BYTE_SWAP |
3521 #endif
3522               BCE_DMA_CONFIG_CNTL_WORD_SWAP |
3523               DMA_READ_CHANS << 12 |
3524               DMA_WRITE_CHANS << 16;
3525
3526         val |= (0x2 << 20) | BCE_DMA_CONFIG_CNTL_PCI_COMP_DLY;
3527
3528         if ((sc->bce_flags & BCE_PCIX_FLAG) && sc->bus_speed_mhz == 133)
3529                 val |= BCE_DMA_CONFIG_PCI_FAST_CLK_CMP;
3530
3531         /*
3532          * This setting resolves a problem observed on certain Intel PCI
3533          * chipsets that cannot handle multiple outstanding DMA operations.
3534          * See errata E9_5706A1_65.
3535          */
3536         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5706 &&
3537             BCE_CHIP_ID(sc) != BCE_CHIP_ID_5706_A0 &&
3538             !(sc->bce_flags & BCE_PCIX_FLAG))
3539                 val |= BCE_DMA_CONFIG_CNTL_PING_PONG_DMA;
3540
3541         REG_WR(sc, BCE_DMA_CONFIG, val);
3542
3543         /* Enable the RX_V2P and Context state machines before access. */
3544         REG_WR(sc, BCE_MISC_ENABLE_SET_BITS,
3545                BCE_MISC_ENABLE_SET_BITS_HOST_COALESCE_ENABLE |
3546                BCE_MISC_ENABLE_STATUS_BITS_RX_V2P_ENABLE |
3547                BCE_MISC_ENABLE_STATUS_BITS_CONTEXT_ENABLE);
3548
3549         /* Initialize context mapping and zero out the quick contexts. */
3550         bce_init_ctx(sc);
3551
3552         /* Initialize the on-boards CPUs */
3553         bce_init_cpus(sc);
3554
3555         /* Enable management frames (NC-SI) to flow to the MCP. */
3556         if (sc->bce_flags & BCE_MFW_ENABLE_FLAG) {
3557                 val = REG_RD(sc, BCE_RPM_MGMT_PKT_CTRL) |
3558                     BCE_RPM_MGMT_PKT_CTRL_MGMT_EN;
3559                 REG_WR(sc, BCE_RPM_MGMT_PKT_CTRL, val);
3560         }
3561
3562         /* Prepare NVRAM for access. */
3563         rc = bce_init_nvram(sc);
3564         if (rc != 0)
3565                 return rc;
3566
3567         /* Set the kernel bypass block size */
3568         val = REG_RD(sc, BCE_MQ_CONFIG);
3569         val &= ~BCE_MQ_CONFIG_KNL_BYP_BLK_SIZE;
3570         val |= BCE_MQ_CONFIG_KNL_BYP_BLK_SIZE_256;
3571
3572         /* Enable bins used on the 5709/5716. */
3573         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
3574             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
3575                 val |= BCE_MQ_CONFIG_BIN_MQ_MODE;
3576                 if (BCE_CHIP_ID(sc) == BCE_CHIP_ID_5709_A1)
3577                         val |= BCE_MQ_CONFIG_HALT_DIS;
3578         }
3579
3580         REG_WR(sc, BCE_MQ_CONFIG, val);
3581
3582         val = 0x10000 + (MAX_CID_CNT * MB_KERNEL_CTX_SIZE);
3583         REG_WR(sc, BCE_MQ_KNL_BYP_WIND_START, val);
3584         REG_WR(sc, BCE_MQ_KNL_WIND_END, val);
3585
3586         /* Set the page size and clear the RV2P processor stall bits. */
3587         val = (BCM_PAGE_BITS - 8) << 24;
3588         REG_WR(sc, BCE_RV2P_CONFIG, val);
3589
3590         /* Configure page size. */
3591         val = REG_RD(sc, BCE_TBDR_CONFIG);
3592         val &= ~BCE_TBDR_CONFIG_PAGE_SIZE;
3593         val |= (BCM_PAGE_BITS - 8) << 24 | 0x40;
3594         REG_WR(sc, BCE_TBDR_CONFIG, val);
3595
3596         /* Set the perfect match control register to default. */
3597         REG_WR_IND(sc, BCE_RXP_PM_CTRL, 0);
3598
3599         return 0;
3600 }
3601
3602
3603 /****************************************************************************/
3604 /* Initialize the controller in preparation to send/receive traffic.        */
3605 /*                                                                          */
3606 /* Returns:                                                                 */
3607 /*   0 for success, positive value for failure.                             */
3608 /****************************************************************************/
3609 static int
3610 bce_blockinit(struct bce_softc *sc)
3611 {
3612         uint32_t reg, val;
3613         int rc = 0;
3614
3615         /* Load the hardware default MAC address. */
3616         bce_set_mac_addr(sc);
3617
3618         /* Set the Ethernet backoff seed value */
3619         val = sc->eaddr[0] + (sc->eaddr[1] << 8) + (sc->eaddr[2] << 16) +
3620               sc->eaddr[3] + (sc->eaddr[4] << 8) + (sc->eaddr[5] << 16);
3621         REG_WR(sc, BCE_EMAC_BACKOFF_SEED, val);
3622
3623         sc->last_status_idx = 0;
3624         sc->rx_mode = BCE_EMAC_RX_MODE_SORT_MODE;
3625
3626         /* Set up link change interrupt generation. */
3627         REG_WR(sc, BCE_EMAC_ATTENTION_ENA, BCE_EMAC_ATTENTION_ENA_LINK);
3628
3629         /* Program the physical address of the status block. */
3630         REG_WR(sc, BCE_HC_STATUS_ADDR_L, BCE_ADDR_LO(sc->status_block_paddr));
3631         REG_WR(sc, BCE_HC_STATUS_ADDR_H, BCE_ADDR_HI(sc->status_block_paddr));
3632
3633         /* Program the physical address of the statistics block. */
3634         REG_WR(sc, BCE_HC_STATISTICS_ADDR_L,
3635                BCE_ADDR_LO(sc->stats_block_paddr));
3636         REG_WR(sc, BCE_HC_STATISTICS_ADDR_H,
3637                BCE_ADDR_HI(sc->stats_block_paddr));
3638
3639         /* Program various host coalescing parameters. */
3640         REG_WR(sc, BCE_HC_TX_QUICK_CONS_TRIP,
3641                (sc->bce_tx_quick_cons_trip_int << 16) |
3642                sc->bce_tx_quick_cons_trip);
3643         REG_WR(sc, BCE_HC_RX_QUICK_CONS_TRIP,
3644                (sc->bce_rx_quick_cons_trip_int << 16) |
3645                sc->bce_rx_quick_cons_trip);
3646         REG_WR(sc, BCE_HC_COMP_PROD_TRIP,
3647                (sc->bce_comp_prod_trip_int << 16) | sc->bce_comp_prod_trip);
3648         REG_WR(sc, BCE_HC_TX_TICKS,
3649                (sc->bce_tx_ticks_int << 16) | sc->bce_tx_ticks);
3650         REG_WR(sc, BCE_HC_RX_TICKS,
3651                (sc->bce_rx_ticks_int << 16) | sc->bce_rx_ticks);
3652         REG_WR(sc, BCE_HC_COM_TICKS,
3653                (sc->bce_com_ticks_int << 16) | sc->bce_com_ticks);
3654         REG_WR(sc, BCE_HC_CMD_TICKS,
3655                (sc->bce_cmd_ticks_int << 16) | sc->bce_cmd_ticks);
3656         REG_WR(sc, BCE_HC_STATS_TICKS, (sc->bce_stats_ticks & 0xffff00));
3657         REG_WR(sc, BCE_HC_STAT_COLLECT_TICKS, 0xbb8);   /* 3ms */
3658         REG_WR(sc, BCE_HC_CONFIG,
3659                BCE_HC_CONFIG_TX_TMR_MODE |
3660                BCE_HC_CONFIG_COLLECT_STATS);
3661
3662         /* Clear the internal statistics counters. */
3663         REG_WR(sc, BCE_HC_COMMAND, BCE_HC_COMMAND_CLR_STAT_NOW);
3664
3665         /* Verify that bootcode is running. */
3666         reg = bce_shmem_rd(sc, BCE_DEV_INFO_SIGNATURE);
3667
3668         DBRUNIF(DB_RANDOMTRUE(bce_debug_bootcode_running_failure),
3669                 if_printf(&sc->arpcom.ac_if,
3670                           "%s(%d): Simulating bootcode failure.\n",
3671                           __FILE__, __LINE__);
3672                 reg = 0);
3673
3674         if ((reg & BCE_DEV_INFO_SIGNATURE_MAGIC_MASK) !=
3675             BCE_DEV_INFO_SIGNATURE_MAGIC) {
3676                 if_printf(&sc->arpcom.ac_if,
3677                           "Bootcode not running! Found: 0x%08X, "
3678                           "Expected: 08%08X\n",
3679                           reg & BCE_DEV_INFO_SIGNATURE_MAGIC_MASK,
3680                           BCE_DEV_INFO_SIGNATURE_MAGIC);
3681                 return ENODEV;
3682         }
3683
3684         /* Enable DMA */
3685         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
3686             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
3687                 val = REG_RD(sc, BCE_MISC_NEW_CORE_CTL);
3688                 val |= BCE_MISC_NEW_CORE_CTL_DMA_ENABLE;
3689                 REG_WR(sc, BCE_MISC_NEW_CORE_CTL, val);
3690         }
3691
3692         /* Allow bootcode to apply any additional fixes before enabling MAC. */
3693         rc = bce_fw_sync(sc, BCE_DRV_MSG_DATA_WAIT2 | BCE_DRV_MSG_CODE_RESET);
3694
3695         /* Enable link state change interrupt generation. */
3696         REG_WR(sc, BCE_HC_ATTN_BITS_ENABLE, STATUS_ATTN_BITS_LINK_STATE);
3697
3698         /* Enable the RXP. */
3699         bce_start_rxp_cpu(sc);
3700
3701         /* Disable management frames (NC-SI) from flowing to the MCP. */
3702         if (sc->bce_flags & BCE_MFW_ENABLE_FLAG) {
3703                 val = REG_RD(sc, BCE_RPM_MGMT_PKT_CTRL) &
3704                     ~BCE_RPM_MGMT_PKT_CTRL_MGMT_EN;
3705                 REG_WR(sc, BCE_RPM_MGMT_PKT_CTRL, val);
3706         }
3707
3708         /* Enable all remaining blocks in the MAC. */
3709         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
3710             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
3711                 REG_WR(sc, BCE_MISC_ENABLE_SET_BITS,
3712                     BCE_MISC_ENABLE_DEFAULT_XI);
3713         } else {
3714                 REG_WR(sc, BCE_MISC_ENABLE_SET_BITS, BCE_MISC_ENABLE_DEFAULT);
3715         }
3716         REG_RD(sc, BCE_MISC_ENABLE_SET_BITS);
3717         DELAY(20);
3718
3719         /* Save the current host coalescing block settings. */
3720         sc->hc_command = REG_RD(sc, BCE_HC_COMMAND);
3721
3722         return 0;
3723 }
3724
3725
3726 /****************************************************************************/
3727 /* Encapsulate an mbuf cluster into the rx_bd chain.                        */
3728 /*                                                                          */
3729 /* The NetXtreme II can support Jumbo frames by using multiple rx_bd's.     */
3730 /* This routine will map an mbuf cluster into 1 or more rx_bd's as          */
3731 /* necessary.                                                               */
3732 /*                                                                          */
3733 /* Returns:                                                                 */
3734 /*   0 for success, positive value for failure.                             */
3735 /****************************************************************************/
3736 static int
3737 bce_newbuf_std(struct bce_softc *sc, uint16_t *prod, uint16_t *chain_prod,
3738                uint32_t *prod_bseq, int init)
3739 {
3740         bus_dmamap_t map;
3741         bus_dma_segment_t seg;
3742         struct mbuf *m_new;
3743         int error, nseg;
3744 #ifdef BCE_DEBUG
3745         uint16_t debug_chain_prod = *chain_prod;
3746 #endif
3747
3748         /* Make sure the inputs are valid. */
3749         DBRUNIF((*chain_prod > MAX_RX_BD),
3750                 if_printf(&sc->arpcom.ac_if, "%s(%d): "
3751                           "RX producer out of range: 0x%04X > 0x%04X\n",
3752                           __FILE__, __LINE__,
3753                           *chain_prod, (uint16_t)MAX_RX_BD));
3754
3755         DBPRINT(sc, BCE_VERBOSE_RECV, "%s(enter): prod = 0x%04X, chain_prod = 0x%04X, "
3756                 "prod_bseq = 0x%08X\n", __func__, *prod, *chain_prod, *prod_bseq);
3757
3758         DBRUNIF(DB_RANDOMTRUE(bce_debug_mbuf_allocation_failure),
3759                 if_printf(&sc->arpcom.ac_if, "%s(%d): "
3760                           "Simulating mbuf allocation failure.\n",
3761                           __FILE__, __LINE__);
3762                 sc->mbuf_alloc_failed++;
3763                 return ENOBUFS);
3764
3765         /* This is a new mbuf allocation. */
3766         m_new = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
3767         if (m_new == NULL)
3768                 return ENOBUFS;
3769         DBRUNIF(1, sc->rx_mbuf_alloc++);
3770
3771         m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
3772
3773         /* Map the mbuf cluster into device memory. */
3774         error = bus_dmamap_load_mbuf_segment(sc->rx_mbuf_tag,
3775                         sc->rx_mbuf_tmpmap, m_new, &seg, 1, &nseg,
3776                         BUS_DMA_NOWAIT);
3777         if (error) {
3778                 m_freem(m_new);
3779                 if (init) {
3780                         if_printf(&sc->arpcom.ac_if,
3781                                   "Error mapping mbuf into RX chain!\n");
3782                 }
3783                 DBRUNIF(1, sc->rx_mbuf_alloc--);
3784                 return error;
3785         }
3786
3787         if (sc->rx_mbuf_ptr[*chain_prod] != NULL) {
3788                 bus_dmamap_unload(sc->rx_mbuf_tag,
3789                                   sc->rx_mbuf_map[*chain_prod]);
3790         }
3791
3792         map = sc->rx_mbuf_map[*chain_prod];
3793         sc->rx_mbuf_map[*chain_prod] = sc->rx_mbuf_tmpmap;
3794         sc->rx_mbuf_tmpmap = map;
3795
3796         /* Watch for overflow. */
3797         DBRUNIF((sc->free_rx_bd > USABLE_RX_BD),
3798                 if_printf(&sc->arpcom.ac_if, "%s(%d): "
3799                           "Too many free rx_bd (0x%04X > 0x%04X)!\n",
3800                           __FILE__, __LINE__, sc->free_rx_bd,
3801                           (uint16_t)USABLE_RX_BD));
3802
3803         /* Update some debug statistic counters */
3804         DBRUNIF((sc->free_rx_bd < sc->rx_low_watermark),
3805                 sc->rx_low_watermark = sc->free_rx_bd);
3806         DBRUNIF((sc->free_rx_bd == 0), sc->rx_empty_count++);
3807
3808         /* Save the mbuf and update our counter. */
3809         sc->rx_mbuf_ptr[*chain_prod] = m_new;
3810         sc->rx_mbuf_paddr[*chain_prod] = seg.ds_addr;
3811         sc->free_rx_bd--;
3812
3813         bce_setup_rxdesc_std(sc, *chain_prod, prod_bseq);
3814
3815         DBRUN(BCE_VERBOSE_RECV,
3816               bce_dump_rx_mbuf_chain(sc, debug_chain_prod, 1));
3817
3818         DBPRINT(sc, BCE_VERBOSE_RECV, "%s(exit): prod = 0x%04X, chain_prod = 0x%04X, "
3819                 "prod_bseq = 0x%08X\n", __func__, *prod, *chain_prod, *prod_bseq);
3820
3821         return 0;
3822 }
3823
3824
3825 static void
3826 bce_setup_rxdesc_std(struct bce_softc *sc, uint16_t chain_prod, uint32_t *prod_bseq)
3827 {
3828         struct rx_bd *rxbd;
3829         bus_addr_t paddr;
3830         int len;
3831
3832         paddr = sc->rx_mbuf_paddr[chain_prod];
3833         len = sc->rx_mbuf_ptr[chain_prod]->m_len;
3834
3835         /* Setup the rx_bd for the first segment. */
3836         rxbd = &sc->rx_bd_chain[RX_PAGE(chain_prod)][RX_IDX(chain_prod)];
3837
3838         rxbd->rx_bd_haddr_lo = htole32(BCE_ADDR_LO(paddr));
3839         rxbd->rx_bd_haddr_hi = htole32(BCE_ADDR_HI(paddr));
3840         rxbd->rx_bd_len = htole32(len);
3841         rxbd->rx_bd_flags = htole32(RX_BD_FLAGS_START);
3842         *prod_bseq += len;
3843
3844         rxbd->rx_bd_flags |= htole32(RX_BD_FLAGS_END);
3845 }
3846
3847
3848 /****************************************************************************/
3849 /* Initialize the TX context memory.                                        */
3850 /*                                                                          */
3851 /* Returns:                                                                 */
3852 /*   Nothing                                                                */
3853 /****************************************************************************/
3854 static void
3855 bce_init_tx_context(struct bce_softc *sc)
3856 {
3857         uint32_t val;
3858
3859         /* Initialize the context ID for an L2 TX chain. */
3860         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
3861             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
3862                 /* Set the CID type to support an L2 connection. */
3863                 val = BCE_L2CTX_TX_TYPE_TYPE_L2 | BCE_L2CTX_TX_TYPE_SIZE_L2;
3864                 CTX_WR(sc, GET_CID_ADDR(TX_CID), BCE_L2CTX_TX_TYPE_XI, val);
3865                 val = BCE_L2CTX_TX_CMD_TYPE_TYPE_L2 | (8 << 16);
3866                 CTX_WR(sc, GET_CID_ADDR(TX_CID), BCE_L2CTX_TX_CMD_TYPE_XI, val);
3867
3868                 /* Point the hardware to the first page in the chain. */
3869                 val = BCE_ADDR_HI(sc->tx_bd_chain_paddr[0]);
3870                 CTX_WR(sc, GET_CID_ADDR(TX_CID),
3871                     BCE_L2CTX_TX_TBDR_BHADDR_HI_XI, val);
3872                 val = BCE_ADDR_LO(sc->tx_bd_chain_paddr[0]);
3873                 CTX_WR(sc, GET_CID_ADDR(TX_CID),
3874                     BCE_L2CTX_TX_TBDR_BHADDR_LO_XI, val);
3875         } else {
3876                 /* Set the CID type to support an L2 connection. */
3877                 val = BCE_L2CTX_TX_TYPE_TYPE_L2 | BCE_L2CTX_TX_TYPE_SIZE_L2;
3878                 CTX_WR(sc, GET_CID_ADDR(TX_CID), BCE_L2CTX_TX_TYPE, val);
3879                 val = BCE_L2CTX_TX_CMD_TYPE_TYPE_L2 | (8 << 16);
3880                 CTX_WR(sc, GET_CID_ADDR(TX_CID), BCE_L2CTX_TX_CMD_TYPE, val);
3881
3882                 /* Point the hardware to the first page in the chain. */
3883                 val = BCE_ADDR_HI(sc->tx_bd_chain_paddr[0]);
3884                 CTX_WR(sc, GET_CID_ADDR(TX_CID),
3885                     BCE_L2CTX_TX_TBDR_BHADDR_HI, val);
3886                 val = BCE_ADDR_LO(sc->tx_bd_chain_paddr[0]);
3887                 CTX_WR(sc, GET_CID_ADDR(TX_CID),
3888                     BCE_L2CTX_TX_TBDR_BHADDR_LO, val);
3889         }
3890 }
3891
3892
3893 /****************************************************************************/
3894 /* Allocate memory and initialize the TX data structures.                   */
3895 /*                                                                          */
3896 /* Returns:                                                                 */
3897 /*   0 for success, positive value for failure.                             */
3898 /****************************************************************************/
3899 static int
3900 bce_init_tx_chain(struct bce_softc *sc)
3901 {
3902         struct tx_bd *txbd;
3903         int i, rc = 0;
3904
3905         DBPRINT(sc, BCE_VERBOSE_RESET, "Entering %s()\n", __func__);
3906
3907         /* Set the initial TX producer/consumer indices. */
3908         sc->tx_prod = 0;
3909         sc->tx_cons = 0;
3910         sc->tx_prod_bseq   = 0;
3911         sc->used_tx_bd = 0;
3912         sc->max_tx_bd = USABLE_TX_BD;
3913         DBRUNIF(1, sc->tx_hi_watermark = USABLE_TX_BD);
3914         DBRUNIF(1, sc->tx_full_count = 0);
3915
3916         /*
3917          * The NetXtreme II supports a linked-list structre called
3918          * a Buffer Descriptor Chain (or BD chain).  A BD chain
3919          * consists of a series of 1 or more chain pages, each of which
3920          * consists of a fixed number of BD entries.
3921          * The last BD entry on each page is a pointer to the next page
3922          * in the chain, and the last pointer in the BD chain
3923          * points back to the beginning of the chain.
3924          */
3925
3926         /* Set the TX next pointer chain entries. */
3927         for (i = 0; i < TX_PAGES; i++) {
3928                 int j;
3929
3930                 txbd = &sc->tx_bd_chain[i][USABLE_TX_BD_PER_PAGE];
3931
3932                 /* Check if we've reached the last page. */
3933                 if (i == (TX_PAGES - 1))
3934                         j = 0;
3935                 else
3936                         j = i + 1;
3937
3938                 txbd->tx_bd_haddr_hi =
3939                         htole32(BCE_ADDR_HI(sc->tx_bd_chain_paddr[j]));
3940                 txbd->tx_bd_haddr_lo =
3941                         htole32(BCE_ADDR_LO(sc->tx_bd_chain_paddr[j]));
3942         }
3943         bce_init_tx_context(sc);
3944
3945         return(rc);
3946 }
3947
3948
3949 /****************************************************************************/
3950 /* Free memory and clear the TX data structures.                            */
3951 /*                                                                          */
3952 /* Returns:                                                                 */
3953 /*   Nothing.                                                               */
3954 /****************************************************************************/
3955 static void
3956 bce_free_tx_chain(struct bce_softc *sc)
3957 {
3958         int i;
3959
3960         DBPRINT(sc, BCE_VERBOSE_RESET, "Entering %s()\n", __func__);
3961
3962         /* Unmap, unload, and free any mbufs still in the TX mbuf chain. */
3963         for (i = 0; i < TOTAL_TX_BD; i++) {
3964                 if (sc->tx_mbuf_ptr[i] != NULL) {
3965                         bus_dmamap_unload(sc->tx_mbuf_tag, sc->tx_mbuf_map[i]);
3966                         m_freem(sc->tx_mbuf_ptr[i]);
3967                         sc->tx_mbuf_ptr[i] = NULL;
3968                         DBRUNIF(1, sc->tx_mbuf_alloc--);
3969                 }
3970         }
3971
3972         /* Clear each TX chain page. */
3973         for (i = 0; i < TX_PAGES; i++)
3974                 bzero(sc->tx_bd_chain[i], BCE_TX_CHAIN_PAGE_SZ);
3975         sc->used_tx_bd = 0;
3976
3977         /* Check if we lost any mbufs in the process. */
3978         DBRUNIF((sc->tx_mbuf_alloc),
3979                 if_printf(&sc->arpcom.ac_if,
3980                           "%s(%d): Memory leak! "
3981                           "Lost %d mbufs from tx chain!\n",
3982                           __FILE__, __LINE__, sc->tx_mbuf_alloc));
3983
3984         DBPRINT(sc, BCE_VERBOSE_RESET, "Exiting %s()\n", __func__);
3985 }
3986
3987
3988 /****************************************************************************/
3989 /* Initialize the RX context memory.                                        */
3990 /*                                                                          */
3991 /* Returns:                                                                 */
3992 /*   Nothing                                                                */
3993 /****************************************************************************/
3994 static void
3995 bce_init_rx_context(struct bce_softc *sc)
3996 {
3997         uint32_t val;
3998
3999         /* Initialize the context ID for an L2 RX chain. */
4000         val = BCE_L2CTX_RX_CTX_TYPE_CTX_BD_CHN_TYPE_VALUE |
4001             BCE_L2CTX_RX_CTX_TYPE_SIZE_L2 | (0x02 << 8);
4002
4003         /*
4004          * Set the level for generating pause frames
4005          * when the number of available rx_bd's gets
4006          * too low (the low watermark) and the level
4007          * when pause frames can be stopped (the high
4008          * watermark).
4009          */
4010         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
4011             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
4012                 uint32_t lo_water, hi_water;
4013
4014                 lo_water = BCE_L2CTX_RX_LO_WATER_MARK_DEFAULT;
4015                 hi_water = USABLE_RX_BD / 4;
4016
4017                 lo_water /= BCE_L2CTX_RX_LO_WATER_MARK_SCALE;
4018                 hi_water /= BCE_L2CTX_RX_HI_WATER_MARK_SCALE;
4019
4020                 if (hi_water > 0xf)
4021                         hi_water = 0xf;
4022                 else if (hi_water == 0)
4023                         lo_water = 0;
4024                 val |= lo_water |
4025                     (hi_water << BCE_L2CTX_RX_HI_WATER_MARK_SHIFT);
4026         }
4027
4028         CTX_WR(sc, GET_CID_ADDR(RX_CID), BCE_L2CTX_RX_CTX_TYPE, val);
4029
4030         /* Setup the MQ BIN mapping for l2_ctx_host_bseq. */
4031         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
4032             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
4033                 val = REG_RD(sc, BCE_MQ_MAP_L2_5);
4034                 REG_WR(sc, BCE_MQ_MAP_L2_5, val | BCE_MQ_MAP_L2_5_ARM);
4035         }
4036
4037         /* Point the hardware to the first page in the chain. */
4038         val = BCE_ADDR_HI(sc->rx_bd_chain_paddr[0]);
4039         CTX_WR(sc, GET_CID_ADDR(RX_CID), BCE_L2CTX_RX_NX_BDHADDR_HI, val);
4040         val = BCE_ADDR_LO(sc->rx_bd_chain_paddr[0]);
4041         CTX_WR(sc, GET_CID_ADDR(RX_CID), BCE_L2CTX_RX_NX_BDHADDR_LO, val);
4042 }
4043
4044
4045 /****************************************************************************/
4046 /* Allocate memory and initialize the RX data structures.                   */
4047 /*                                                                          */
4048 /* Returns:                                                                 */
4049 /*   0 for success, positive value for failure.                             */
4050 /****************************************************************************/
4051 static int
4052 bce_init_rx_chain(struct bce_softc *sc)
4053 {
4054         struct rx_bd *rxbd;
4055         int i, rc = 0;
4056         uint16_t prod, chain_prod;
4057         uint32_t prod_bseq;
4058
4059         DBPRINT(sc, BCE_VERBOSE_RESET, "Entering %s()\n", __func__);
4060
4061         /* Initialize the RX producer and consumer indices. */
4062         sc->rx_prod = 0;
4063         sc->rx_cons = 0;
4064         sc->rx_prod_bseq = 0;
4065         sc->free_rx_bd = USABLE_RX_BD;
4066         sc->max_rx_bd = USABLE_RX_BD;
4067         DBRUNIF(1, sc->rx_low_watermark = USABLE_RX_BD);
4068         DBRUNIF(1, sc->rx_empty_count = 0);
4069
4070         /* Initialize the RX next pointer chain entries. */
4071         for (i = 0; i < RX_PAGES; i++) {
4072                 int j;
4073
4074                 rxbd = &sc->rx_bd_chain[i][USABLE_RX_BD_PER_PAGE];
4075
4076                 /* Check if we've reached the last page. */
4077                 if (i == (RX_PAGES - 1))
4078                         j = 0;
4079                 else
4080                         j = i + 1;
4081
4082                 /* Setup the chain page pointers. */
4083                 rxbd->rx_bd_haddr_hi =
4084                         htole32(BCE_ADDR_HI(sc->rx_bd_chain_paddr[j]));
4085                 rxbd->rx_bd_haddr_lo =
4086                         htole32(BCE_ADDR_LO(sc->rx_bd_chain_paddr[j]));
4087         }
4088
4089         /* Allocate mbuf clusters for the rx_bd chain. */
4090         prod = prod_bseq = 0;
4091         while (prod < TOTAL_RX_BD) {
4092                 chain_prod = RX_CHAIN_IDX(prod);
4093                 if (bce_newbuf_std(sc, &prod, &chain_prod, &prod_bseq, 1)) {
4094                         if_printf(&sc->arpcom.ac_if,
4095                                   "Error filling RX chain: rx_bd[0x%04X]!\n",
4096                                   chain_prod);
4097                         rc = ENOBUFS;
4098                         break;
4099                 }
4100                 prod = NEXT_RX_BD(prod);
4101         }
4102
4103         /* Save the RX chain producer index. */
4104         sc->rx_prod = prod;
4105         sc->rx_prod_bseq = prod_bseq;
4106
4107         /* Tell the chip about the waiting rx_bd's. */
4108         REG_WR16(sc, MB_GET_CID_ADDR(RX_CID) + BCE_L2MQ_RX_HOST_BDIDX,
4109             sc->rx_prod);
4110         REG_WR(sc, MB_GET_CID_ADDR(RX_CID) + BCE_L2MQ_RX_HOST_BSEQ,
4111             sc->rx_prod_bseq);
4112
4113         bce_init_rx_context(sc);
4114
4115         return(rc);
4116 }
4117
4118
4119 /****************************************************************************/
4120 /* Free memory and clear the RX data structures.                            */
4121 /*                                                                          */
4122 /* Returns:                                                                 */
4123 /*   Nothing.                                                               */
4124 /****************************************************************************/
4125 static void
4126 bce_free_rx_chain(struct bce_softc *sc)
4127 {
4128         int i;
4129
4130         DBPRINT(sc, BCE_VERBOSE_RESET, "Entering %s()\n", __func__);
4131
4132         /* Free any mbufs still in the RX mbuf chain. */
4133         for (i = 0; i < TOTAL_RX_BD; i++) {
4134                 if (sc->rx_mbuf_ptr[i] != NULL) {
4135                         bus_dmamap_unload(sc->rx_mbuf_tag, sc->rx_mbuf_map[i]);
4136                         m_freem(sc->rx_mbuf_ptr[i]);
4137                         sc->rx_mbuf_ptr[i] = NULL;
4138                         DBRUNIF(1, sc->rx_mbuf_alloc--);
4139                 }
4140         }
4141
4142         /* Clear each RX chain page. */
4143         for (i = 0; i < RX_PAGES; i++)
4144                 bzero(sc->rx_bd_chain[i], BCE_RX_CHAIN_PAGE_SZ);
4145
4146         /* Check if we lost any mbufs in the process. */
4147         DBRUNIF((sc->rx_mbuf_alloc),
4148                 if_printf(&sc->arpcom.ac_if,
4149                           "%s(%d): Memory leak! "
4150                           "Lost %d mbufs from rx chain!\n",
4151                           __FILE__, __LINE__, sc->rx_mbuf_alloc));
4152
4153         DBPRINT(sc, BCE_VERBOSE_RESET, "Exiting %s()\n", __func__);
4154 }
4155
4156
4157 /****************************************************************************/
4158 /* Set media options.                                                       */
4159 /*                                                                          */
4160 /* Returns:                                                                 */
4161 /*   0 for success, positive value for failure.                             */
4162 /****************************************************************************/
4163 static int
4164 bce_ifmedia_upd(struct ifnet *ifp)
4165 {
4166         struct bce_softc *sc = ifp->if_softc;
4167         struct mii_data *mii = device_get_softc(sc->bce_miibus);
4168
4169         /*
4170          * 'mii' will be NULL, when this function is called on following
4171          * code path: bce_attach() -> bce_mgmt_init()
4172          */
4173         if (mii != NULL) {
4174                 /* Make sure the MII bus has been enumerated. */
4175                 sc->bce_link = 0;
4176                 if (mii->mii_instance) {
4177                         struct mii_softc *miisc;
4178
4179                         LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
4180                                 mii_phy_reset(miisc);
4181                 }
4182                 mii_mediachg(mii);
4183         }
4184         return 0;
4185 }
4186
4187
4188 /****************************************************************************/
4189 /* Reports current media status.                                            */
4190 /*                                                                          */
4191 /* Returns:                                                                 */
4192 /*   Nothing.                                                               */
4193 /****************************************************************************/
4194 static void
4195 bce_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
4196 {
4197         struct bce_softc *sc = ifp->if_softc;
4198         struct mii_data *mii = device_get_softc(sc->bce_miibus);
4199
4200         mii_pollstat(mii);
4201         ifmr->ifm_active = mii->mii_media_active;
4202         ifmr->ifm_status = mii->mii_media_status;
4203 }
4204
4205
4206 /****************************************************************************/
4207 /* Handles PHY generated interrupt events.                                  */
4208 /*                                                                          */
4209 /* Returns:                                                                 */
4210 /*   Nothing.                                                               */
4211 /****************************************************************************/
4212 static void
4213 bce_phy_intr(struct bce_softc *sc)
4214 {
4215         uint32_t new_link_state, old_link_state;
4216         struct ifnet *ifp = &sc->arpcom.ac_if;
4217
4218         ASSERT_SERIALIZED(ifp->if_serializer);
4219
4220         new_link_state = sc->status_block->status_attn_bits &
4221                          STATUS_ATTN_BITS_LINK_STATE;
4222         old_link_state = sc->status_block->status_attn_bits_ack &
4223                          STATUS_ATTN_BITS_LINK_STATE;
4224
4225         /* Handle any changes if the link state has changed. */
4226         if (new_link_state != old_link_state) { /* XXX redundant? */
4227                 DBRUN(BCE_VERBOSE_INTR, bce_dump_status_block(sc));
4228
4229                 /* Update the status_attn_bits_ack field in the status block. */
4230                 if (new_link_state) {
4231                         REG_WR(sc, BCE_PCICFG_STATUS_BIT_SET_CMD,
4232                                STATUS_ATTN_BITS_LINK_STATE);
4233                         if (bootverbose)
4234                                 if_printf(ifp, "Link is now UP.\n");
4235                 } else {
4236                         REG_WR(sc, BCE_PCICFG_STATUS_BIT_CLEAR_CMD,
4237                                STATUS_ATTN_BITS_LINK_STATE);
4238                         if (bootverbose)
4239                                 if_printf(ifp, "Link is now DOWN.\n");
4240                 }
4241
4242                 /*
4243                  * Assume link is down and allow tick routine to
4244                  * update the state based on the actual media state.
4245                  */
4246                 sc->bce_link = 0;
4247                 callout_stop(&sc->bce_tick_callout);
4248                 bce_tick_serialized(sc);
4249         }
4250
4251         /* Acknowledge the link change interrupt. */
4252         REG_WR(sc, BCE_EMAC_STATUS, BCE_EMAC_STATUS_LINK_CHANGE);
4253 }
4254
4255
4256 /****************************************************************************/
4257 /* Reads the receive consumer value from the status block (skipping over    */
4258 /* chain page pointer if necessary).                                        */
4259 /*                                                                          */
4260 /* Returns:                                                                 */
4261 /*   hw_cons                                                                */
4262 /****************************************************************************/
4263 static __inline uint16_t
4264 bce_get_hw_rx_cons(struct bce_softc *sc)
4265 {
4266         uint16_t hw_cons = sc->status_block->status_rx_quick_consumer_index0;
4267
4268         if ((hw_cons & USABLE_RX_BD_PER_PAGE) == USABLE_RX_BD_PER_PAGE)
4269                 hw_cons++;
4270         return hw_cons;
4271 }
4272
4273
4274 /****************************************************************************/
4275 /* Handles received frame interrupt events.                                 */
4276 /*                                                                          */
4277 /* Returns:                                                                 */
4278 /*   Nothing.                                                               */
4279 /****************************************************************************/
4280 static void
4281 bce_rx_intr(struct bce_softc *sc, int count)
4282 {
4283         struct ifnet *ifp = &sc->arpcom.ac_if;
4284         uint16_t hw_cons, sw_cons, sw_chain_cons, sw_prod, sw_chain_prod;
4285         uint32_t sw_prod_bseq;
4286         struct mbuf_chain chain[MAXCPU];
4287
4288         ASSERT_SERIALIZED(ifp->if_serializer);
4289
4290         ether_input_chain_init(chain);
4291
4292         DBRUNIF(1, sc->rx_interrupts++);
4293
4294         /* Get the hardware's view of the RX consumer index. */
4295         hw_cons = sc->hw_rx_cons = bce_get_hw_rx_cons(sc);
4296
4297         /* Get working copies of the driver's view of the RX indices. */
4298         sw_cons = sc->rx_cons;
4299         sw_prod = sc->rx_prod;
4300         sw_prod_bseq = sc->rx_prod_bseq;
4301
4302         DBPRINT(sc, BCE_INFO_RECV, "%s(enter): sw_prod = 0x%04X, "
4303                 "sw_cons = 0x%04X, sw_prod_bseq = 0x%08X\n",
4304                 __func__, sw_prod, sw_cons, sw_prod_bseq);
4305
4306         /* Prevent speculative reads from getting ahead of the status block. */
4307         bus_space_barrier(sc->bce_btag, sc->bce_bhandle, 0, 0,
4308                           BUS_SPACE_BARRIER_READ);
4309
4310         /* Update some debug statistics counters */
4311         DBRUNIF((sc->free_rx_bd < sc->rx_low_watermark),
4312                 sc->rx_low_watermark = sc->free_rx_bd);
4313         DBRUNIF((sc->free_rx_bd == 0), sc->rx_empty_count++);
4314
4315         /* Scan through the receive chain as long as there is work to do. */
4316         while (sw_cons != hw_cons) {
4317                 struct mbuf *m = NULL;
4318                 struct l2_fhdr *l2fhdr = NULL;
4319                 struct rx_bd *rxbd;
4320                 unsigned int len;
4321                 uint32_t status = 0;
4322
4323 #ifdef DEVICE_POLLING
4324                 if (count >= 0 && count-- == 0) {
4325                         sc->hw_rx_cons = sw_cons;
4326                         break;
4327                 }
4328 #endif
4329
4330                 /*
4331                  * Convert the producer/consumer indices
4332                  * to an actual rx_bd index.
4333                  */
4334                 sw_chain_cons = RX_CHAIN_IDX(sw_cons);
4335                 sw_chain_prod = RX_CHAIN_IDX(sw_prod);
4336
4337                 /* Get the used rx_bd. */
4338                 rxbd = &sc->rx_bd_chain[RX_PAGE(sw_chain_cons)]
4339                                        [RX_IDX(sw_chain_cons)];
4340                 sc->free_rx_bd++;
4341
4342                 DBRUN(BCE_VERBOSE_RECV,
4343                       if_printf(ifp, "%s(): ", __func__);
4344                       bce_dump_rxbd(sc, sw_chain_cons, rxbd));
4345
4346                 /* The mbuf is stored with the last rx_bd entry of a packet. */
4347                 if (sc->rx_mbuf_ptr[sw_chain_cons] != NULL) {
4348                         /* Validate that this is the last rx_bd. */
4349                         DBRUNIF((!(rxbd->rx_bd_flags & RX_BD_FLAGS_END)),
4350                                 if_printf(ifp, "%s(%d): "
4351                                 "Unexpected mbuf found in rx_bd[0x%04X]!\n",
4352                                 __FILE__, __LINE__, sw_chain_cons);
4353                                 bce_breakpoint(sc));
4354
4355                         if (sw_chain_cons != sw_chain_prod) {
4356                                 if_printf(ifp, "RX cons(%d) != prod(%d), "
4357                                           "drop!\n", sw_chain_cons,
4358                                           sw_chain_prod);
4359                                 ifp->if_ierrors++;
4360
4361                                 bce_setup_rxdesc_std(sc, sw_chain_cons,
4362                                                      &sw_prod_bseq);
4363                                 m = NULL;
4364                                 goto bce_rx_int_next_rx;
4365                         }
4366
4367                         /* Unmap the mbuf from DMA space. */
4368                         bus_dmamap_sync(sc->rx_mbuf_tag,
4369                                         sc->rx_mbuf_map[sw_chain_cons],
4370                                         BUS_DMASYNC_POSTREAD);
4371
4372                         /* Save the mbuf from the driver's chain. */
4373                         m = sc->rx_mbuf_ptr[sw_chain_cons];
4374
4375                         /*
4376                          * Frames received on the NetXteme II are prepended
4377                          * with an l2_fhdr structure which provides status
4378                          * information about the received frame (including
4379                          * VLAN tags and checksum info).  The frames are also
4380                          * automatically adjusted to align the IP header
4381                          * (i.e. two null bytes are inserted before the
4382                          * Ethernet header).  As a result the data DMA'd by
4383                          * the controller into the mbuf is as follows:
4384                          *
4385                          * +---------+-----+---------------------+-----+
4386                          * | l2_fhdr | pad | packet data         | FCS |
4387                          * +---------+-----+---------------------+-----+
4388                          *
4389                          * The l2_fhdr needs to be checked and skipped and the
4390                          * FCS needs to be stripped before sending the packet
4391                          * up the stack.
4392                          */
4393                         l2fhdr = mtod(m, struct l2_fhdr *);
4394
4395                         len = l2fhdr->l2_fhdr_pkt_len;
4396                         status = l2fhdr->l2_fhdr_status;
4397
4398                         DBRUNIF(DB_RANDOMTRUE(bce_debug_l2fhdr_status_check),
4399                                 if_printf(ifp,
4400                                 "Simulating l2_fhdr status error.\n");
4401                                 status = status | L2_FHDR_ERRORS_PHY_DECODE);
4402
4403                         /* Watch for unusual sized frames. */
4404                         DBRUNIF((len < BCE_MIN_MTU ||
4405                                  len > BCE_MAX_JUMBO_ETHER_MTU_VLAN),
4406                                 if_printf(ifp,
4407                                 "%s(%d): Unusual frame size found. "
4408                                 "Min(%d), Actual(%d), Max(%d)\n",
4409                                 __FILE__, __LINE__,
4410                                 (int)BCE_MIN_MTU, len,
4411                                 (int)BCE_MAX_JUMBO_ETHER_MTU_VLAN);
4412                                 bce_dump_mbuf(sc, m);
4413                                 bce_breakpoint(sc));
4414
4415                         len -= ETHER_CRC_LEN;
4416
4417                         /* Check the received frame for errors. */
4418                         if (status & (L2_FHDR_ERRORS_BAD_CRC |
4419                                       L2_FHDR_ERRORS_PHY_DECODE |
4420                                       L2_FHDR_ERRORS_ALIGNMENT |
4421                                       L2_FHDR_ERRORS_TOO_SHORT |
4422                                       L2_FHDR_ERRORS_GIANT_FRAME)) {
4423                                 ifp->if_ierrors++;
4424                                 DBRUNIF(1, sc->l2fhdr_status_errors++);
4425
4426                                 /* Reuse the mbuf for a new frame. */
4427                                 bce_setup_rxdesc_std(sc, sw_chain_prod,
4428                                                      &sw_prod_bseq);
4429                                 m = NULL;
4430                                 goto bce_rx_int_next_rx;
4431                         }
4432
4433                         /*
4434                          * Get a new mbuf for the rx_bd.   If no new
4435                          * mbufs are available then reuse the current mbuf,
4436                          * log an ierror on the interface, and generate
4437                          * an error in the system log.
4438                          */
4439                         if (bce_newbuf_std(sc, &sw_prod, &sw_chain_prod,
4440                                            &sw_prod_bseq, 0)) {
4441                                 DBRUN(BCE_WARN,
4442                                       if_printf(ifp,
4443                                       "%s(%d): Failed to allocate new mbuf, "
4444                                       "incoming frame dropped!\n",
4445                                       __FILE__, __LINE__));
4446
4447                                 ifp->if_ierrors++;
4448
4449                                 /* Try and reuse the exisitng mbuf. */
4450                                 bce_setup_rxdesc_std(sc, sw_chain_prod,
4451                                                      &sw_prod_bseq);
4452                                 m = NULL;
4453                                 goto bce_rx_int_next_rx;
4454                         }
4455
4456                         /*
4457                          * Skip over the l2_fhdr when passing
4458                          * the data up the stack.
4459                          */
4460                         m_adj(m, sizeof(struct l2_fhdr) + ETHER_ALIGN);
4461
4462                         m->m_pkthdr.len = m->m_len = len;
4463                         m->m_pkthdr.rcvif = ifp;
4464
4465                         DBRUN(BCE_VERBOSE_RECV,
4466                               struct ether_header *eh;
4467                               eh = mtod(m, struct ether_header *);
4468                               if_printf(ifp, "%s(): to: %6D, from: %6D, "
4469                                         "type: 0x%04X\n", __func__,
4470                                         eh->ether_dhost, ":",
4471                                         eh->ether_shost, ":",
4472                                         htons(eh->ether_type)));
4473
4474                         /* Validate the checksum if offload enabled. */
4475                         if (ifp->if_capenable & IFCAP_RXCSUM) {
4476                                 /* Check for an IP datagram. */
4477                                 if (status & L2_FHDR_STATUS_IP_DATAGRAM) {
4478                                         m->m_pkthdr.csum_flags |=
4479                                                 CSUM_IP_CHECKED;
4480
4481                                         /* Check if the IP checksum is valid. */
4482                                         if ((l2fhdr->l2_fhdr_ip_xsum ^
4483                                              0xffff) == 0) {
4484                                                 m->m_pkthdr.csum_flags |=
4485                                                         CSUM_IP_VALID;
4486                                         } else {
4487                                                 DBPRINT(sc, BCE_WARN_RECV,
4488                                                         "%s(): Invalid IP checksum = 0x%04X!\n",
4489                                                         __func__, l2fhdr->l2_fhdr_ip_xsum);
4490                                         }
4491                                 }
4492
4493                                 /* Check for a valid TCP/UDP frame. */
4494                                 if (status & (L2_FHDR_STATUS_TCP_SEGMENT |
4495                                               L2_FHDR_STATUS_UDP_DATAGRAM)) {
4496
4497                                         /* Check for a good TCP/UDP checksum. */
4498                                         if ((status &
4499                                              (L2_FHDR_ERRORS_TCP_XSUM |
4500                                               L2_FHDR_ERRORS_UDP_XSUM)) == 0) {
4501                                                 m->m_pkthdr.csum_data =
4502                                                 l2fhdr->l2_fhdr_tcp_udp_xsum;
4503                                                 m->m_pkthdr.csum_flags |=
4504                                                         CSUM_DATA_VALID |
4505                                                         CSUM_PSEUDO_HDR;
4506                                         } else {
4507                                                 DBPRINT(sc, BCE_WARN_RECV,
4508                                                         "%s(): Invalid TCP/UDP checksum = 0x%04X!\n",
4509                                                         __func__, l2fhdr->l2_fhdr_tcp_udp_xsum);
4510                                         }
4511                                 }
4512                         }
4513
4514                         ifp->if_ipackets++;
4515 bce_rx_int_next_rx:
4516                         sw_prod = NEXT_RX_BD(sw_prod);
4517                 }
4518
4519                 sw_cons = NEXT_RX_BD(sw_cons);
4520
4521                 /* If we have a packet, pass it up the stack */
4522                 if (m) {
4523                         DBPRINT(sc, BCE_VERBOSE_RECV,
4524                                 "%s(): Passing received frame up.\n", __func__);
4525
4526                         if (status & L2_FHDR_STATUS_L2_VLAN_TAG) {
4527                                 m->m_flags |= M_VLANTAG;
4528                                 m->m_pkthdr.ether_vlantag =
4529                                         l2fhdr->l2_fhdr_vlan_tag;
4530                         }
4531                         ether_input_chain(ifp, m, NULL, chain);
4532
4533                         DBRUNIF(1, sc->rx_mbuf_alloc--);
4534                 }
4535
4536                 /*
4537                  * If polling(4) is not enabled, refresh hw_cons to see
4538                  * whether there's new work.
4539                  *
4540                  * If polling(4) is enabled, i.e count >= 0, refreshing
4541                  * should not be performed, so that we would not spend
4542                  * too much time in RX processing.
4543                  */
4544                 if (count < 0 && sw_cons == hw_cons)
4545                         hw_cons = sc->hw_rx_cons = bce_get_hw_rx_cons(sc);
4546
4547                 /*
4548                  * Prevent speculative reads from getting ahead
4549                  * of the status block.
4550                  */
4551                 bus_space_barrier(sc->bce_btag, sc->bce_bhandle, 0, 0,
4552                                   BUS_SPACE_BARRIER_READ);
4553         }
4554
4555         ether_input_dispatch(chain);
4556
4557         sc->rx_cons = sw_cons;
4558         sc->rx_prod = sw_prod;
4559         sc->rx_prod_bseq = sw_prod_bseq;
4560
4561         REG_WR16(sc, MB_GET_CID_ADDR(RX_CID) + BCE_L2MQ_RX_HOST_BDIDX,
4562             sc->rx_prod);
4563         REG_WR(sc, MB_GET_CID_ADDR(RX_CID) + BCE_L2MQ_RX_HOST_BSEQ,
4564             sc->rx_prod_bseq);
4565
4566         DBPRINT(sc, BCE_INFO_RECV, "%s(exit): rx_prod = 0x%04X, "
4567                 "rx_cons = 0x%04X, rx_prod_bseq = 0x%08X\n",
4568                 __func__, sc->rx_prod, sc->rx_cons, sc->rx_prod_bseq);
4569 }
4570
4571
4572 /****************************************************************************/
4573 /* Reads the transmit consumer value from the status block (skipping over   */
4574 /* chain page pointer if necessary).                                        */
4575 /*                                                                          */
4576 /* Returns:                                                                 */
4577 /*   hw_cons                                                                */
4578 /****************************************************************************/
4579 static __inline uint16_t
4580 bce_get_hw_tx_cons(struct bce_softc *sc)
4581 {
4582         uint16_t hw_cons = sc->status_block->status_tx_quick_consumer_index0;
4583
4584         if ((hw_cons & USABLE_TX_BD_PER_PAGE) == USABLE_TX_BD_PER_PAGE)
4585                 hw_cons++;
4586         return hw_cons;
4587 }
4588
4589
4590 /****************************************************************************/
4591 /* Handles transmit completion interrupt events.                            */
4592 /*                                                                          */
4593 /* Returns:                                                                 */
4594 /*   Nothing.                                                               */
4595 /****************************************************************************/
4596 static void
4597 bce_tx_intr(struct bce_softc *sc)
4598 {
4599         struct ifnet *ifp = &sc->arpcom.ac_if;
4600         uint16_t hw_tx_cons, sw_tx_cons, sw_tx_chain_cons;
4601
4602         ASSERT_SERIALIZED(ifp->if_serializer);
4603
4604         DBRUNIF(1, sc->tx_interrupts++);
4605
4606         /* Get the hardware's view of the TX consumer index. */
4607         hw_tx_cons = sc->hw_tx_cons = bce_get_hw_tx_cons(sc);
4608         sw_tx_cons = sc->tx_cons;
4609
4610         /* Prevent speculative reads from getting ahead of the status block. */
4611         bus_space_barrier(sc->bce_btag, sc->bce_bhandle, 0, 0,
4612                           BUS_SPACE_BARRIER_READ);
4613
4614         /* Cycle through any completed TX chain page entries. */
4615         while (sw_tx_cons != hw_tx_cons) {
4616 #ifdef BCE_DEBUG
4617                 struct tx_bd *txbd = NULL;
4618 #endif
4619                 sw_tx_chain_cons = TX_CHAIN_IDX(sw_tx_cons);
4620
4621                 DBPRINT(sc, BCE_INFO_SEND,
4622                         "%s(): hw_tx_cons = 0x%04X, sw_tx_cons = 0x%04X, "
4623                         "sw_tx_chain_cons = 0x%04X\n",
4624                         __func__, hw_tx_cons, sw_tx_cons, sw_tx_chain_cons);
4625
4626                 DBRUNIF((sw_tx_chain_cons > MAX_TX_BD),
4627                         if_printf(ifp, "%s(%d): "
4628                                   "TX chain consumer out of range! "
4629                                   " 0x%04X > 0x%04X\n",
4630                                   __FILE__, __LINE__, sw_tx_chain_cons,
4631                                   (int)MAX_TX_BD);
4632                         bce_breakpoint(sc));
4633
4634                 DBRUNIF(1, txbd = &sc->tx_bd_chain[TX_PAGE(sw_tx_chain_cons)]
4635                                 [TX_IDX(sw_tx_chain_cons)]);
4636
4637                 DBRUNIF((txbd == NULL),
4638                         if_printf(ifp, "%s(%d): "
4639                                   "Unexpected NULL tx_bd[0x%04X]!\n",
4640                                   __FILE__, __LINE__, sw_tx_chain_cons);
4641                         bce_breakpoint(sc));
4642
4643                 DBRUN(BCE_INFO_SEND,
4644                       if_printf(ifp, "%s(): ", __func__);
4645                       bce_dump_txbd(sc, sw_tx_chain_cons, txbd));
4646
4647                 /*
4648                  * Free the associated mbuf. Remember
4649                  * that only the last tx_bd of a packet
4650                  * has an mbuf pointer and DMA map.
4651                  */
4652                 if (sc->tx_mbuf_ptr[sw_tx_chain_cons] != NULL) {
4653                         /* Validate that this is the last tx_bd. */
4654                         DBRUNIF((!(txbd->tx_bd_flags & TX_BD_FLAGS_END)),
4655                                 if_printf(ifp, "%s(%d): "
4656                                 "tx_bd END flag not set but "
4657                                 "txmbuf == NULL!\n", __FILE__, __LINE__);
4658                                 bce_breakpoint(sc));
4659
4660                         DBRUN(BCE_INFO_SEND,
4661                               if_printf(ifp, "%s(): Unloading map/freeing mbuf "
4662                                         "from tx_bd[0x%04X]\n", __func__,
4663                                         sw_tx_chain_cons));
4664
4665                         /* Unmap the mbuf. */
4666                         bus_dmamap_unload(sc->tx_mbuf_tag,
4667                                           sc->tx_mbuf_map[sw_tx_chain_cons]);
4668
4669                         /* Free the mbuf. */
4670                         m_freem(sc->tx_mbuf_ptr[sw_tx_chain_cons]);
4671                         sc->tx_mbuf_ptr[sw_tx_chain_cons] = NULL;
4672                         DBRUNIF(1, sc->tx_mbuf_alloc--);
4673
4674                         ifp->if_opackets++;
4675                 }
4676
4677                 sc->used_tx_bd--;
4678                 sw_tx_cons = NEXT_TX_BD(sw_tx_cons);
4679
4680                 if (sw_tx_cons == hw_tx_cons) {
4681                         /* Refresh hw_cons to see if there's new work. */
4682                         hw_tx_cons = sc->hw_tx_cons = bce_get_hw_tx_cons(sc);
4683                 }
4684
4685                 /*
4686                  * Prevent speculative reads from getting
4687                  * ahead of the status block.
4688                  */
4689                 bus_space_barrier(sc->bce_btag, sc->bce_bhandle, 0, 0,
4690                                   BUS_SPACE_BARRIER_READ);
4691         }
4692
4693         if (sc->used_tx_bd == 0) {
4694                 /* Clear the TX timeout timer. */
4695                 ifp->if_timer = 0;
4696         }
4697
4698         /* Clear the tx hardware queue full flag. */
4699         if (sc->max_tx_bd - sc->used_tx_bd >= BCE_TX_SPARE_SPACE) {
4700                 DBRUNIF((ifp->if_flags & IFF_OACTIVE),
4701                         DBPRINT(sc, BCE_WARN_SEND,
4702                                 "%s(): Open TX chain! %d/%d (used/total)\n",
4703                                 __func__, sc->used_tx_bd, sc->max_tx_bd));
4704                 ifp->if_flags &= ~IFF_OACTIVE;
4705         }
4706         sc->tx_cons = sw_tx_cons;
4707 }
4708
4709
4710 /****************************************************************************/
4711 /* Disables interrupt generation.                                           */
4712 /*                                                                          */
4713 /* Returns:                                                                 */
4714 /*   Nothing.                                                               */
4715 /****************************************************************************/
4716 static void
4717 bce_disable_intr(struct bce_softc *sc)
4718 {
4719         REG_WR(sc, BCE_PCICFG_INT_ACK_CMD, BCE_PCICFG_INT_ACK_CMD_MASK_INT);
4720         REG_RD(sc, BCE_PCICFG_INT_ACK_CMD);
4721         lwkt_serialize_handler_disable(sc->arpcom.ac_if.if_serializer);
4722 }
4723
4724
4725 /****************************************************************************/
4726 /* Enables interrupt generation.                                            */
4727 /*                                                                          */
4728 /* Returns:                                                                 */
4729 /*   Nothing.                                                               */
4730 /****************************************************************************/
4731 static void
4732 bce_enable_intr(struct bce_softc *sc, int coal_now)
4733 {
4734         lwkt_serialize_handler_enable(sc->arpcom.ac_if.if_serializer);
4735
4736         REG_WR(sc, BCE_PCICFG_INT_ACK_CMD,
4737                BCE_PCICFG_INT_ACK_CMD_INDEX_VALID |
4738                BCE_PCICFG_INT_ACK_CMD_MASK_INT | sc->last_status_idx);
4739
4740         REG_WR(sc, BCE_PCICFG_INT_ACK_CMD,
4741                BCE_PCICFG_INT_ACK_CMD_INDEX_VALID | sc->last_status_idx);
4742
4743         if (coal_now) {
4744                 REG_WR(sc, BCE_HC_COMMAND,
4745                     sc->hc_command | BCE_HC_COMMAND_COAL_NOW);
4746         }
4747 }
4748
4749
4750 /****************************************************************************/
4751 /* Handles controller initialization.                                       */
4752 /*                                                                          */
4753 /* Returns:                                                                 */
4754 /*   Nothing.                                                               */
4755 /****************************************************************************/
4756 static void
4757 bce_init(void *xsc)
4758 {
4759         struct bce_softc *sc = xsc;
4760         struct ifnet *ifp = &sc->arpcom.ac_if;
4761         uint32_t ether_mtu;
4762         int error;
4763
4764         ASSERT_SERIALIZED(ifp->if_serializer);
4765
4766         /* Check if the driver is still running and bail out if it is. */
4767         if (ifp->if_flags & IFF_RUNNING)
4768                 return;
4769
4770         bce_stop(sc);
4771
4772         error = bce_reset(sc, BCE_DRV_MSG_CODE_RESET);
4773         if (error) {
4774                 if_printf(ifp, "Controller reset failed!\n");
4775                 goto back;
4776         }
4777
4778         error = bce_chipinit(sc);
4779         if (error) {
4780                 if_printf(ifp, "Controller initialization failed!\n");
4781                 goto back;
4782         }
4783
4784         error = bce_blockinit(sc);
4785         if (error) {
4786                 if_printf(ifp, "Block initialization failed!\n");
4787                 goto back;
4788         }
4789
4790         /* Load our MAC address. */
4791         bcopy(IF_LLADDR(ifp), sc->eaddr, ETHER_ADDR_LEN);
4792         bce_set_mac_addr(sc);
4793
4794         /* Calculate and program the Ethernet MTU size. */
4795         ether_mtu = ETHER_HDR_LEN + EVL_ENCAPLEN + ifp->if_mtu + ETHER_CRC_LEN;
4796
4797         DBPRINT(sc, BCE_INFO, "%s(): setting mtu = %d\n", __func__, ether_mtu);
4798
4799         /*
4800          * Program the mtu, enabling jumbo frame
4801          * support if necessary.  Also set the mbuf
4802          * allocation count for RX frames.
4803          */
4804         if (ether_mtu > ETHER_MAX_LEN + EVL_ENCAPLEN) {
4805 #ifdef notyet
4806                 REG_WR(sc, BCE_EMAC_RX_MTU_SIZE,
4807                        min(ether_mtu, BCE_MAX_JUMBO_ETHER_MTU) |
4808                        BCE_EMAC_RX_MTU_SIZE_JUMBO_ENA);
4809                 sc->mbuf_alloc_size = MJUM9BYTES;
4810 #else
4811                 panic("jumbo buffer is not supported yet\n");
4812 #endif
4813         } else {
4814                 REG_WR(sc, BCE_EMAC_RX_MTU_SIZE, ether_mtu);
4815                 sc->mbuf_alloc_size = MCLBYTES;
4816         }
4817
4818         /* Calculate the RX Ethernet frame size for rx_bd's. */
4819         sc->max_frame_size = sizeof(struct l2_fhdr) + 2 + ether_mtu + 8;
4820
4821         DBPRINT(sc, BCE_INFO,
4822                 "%s(): mclbytes = %d, mbuf_alloc_size = %d, "
4823                 "max_frame_size = %d\n",
4824                 __func__, (int)MCLBYTES, sc->mbuf_alloc_size,
4825                 sc->max_frame_size);
4826
4827         /* Program appropriate promiscuous/multicast filtering. */
4828         bce_set_rx_mode(sc);
4829
4830         /* Init RX buffer descriptor chain. */
4831         bce_init_rx_chain(sc);  /* XXX return value */
4832
4833         /* Init TX buffer descriptor chain. */
4834         bce_init_tx_chain(sc);  /* XXX return value */
4835
4836 #ifdef DEVICE_POLLING
4837         /* Disable interrupts if we are polling. */
4838         if (ifp->if_flags & IFF_POLLING) {
4839                 bce_disable_intr(sc);
4840
4841                 REG_WR(sc, BCE_HC_RX_QUICK_CONS_TRIP,
4842                        (1 << 16) | sc->bce_rx_quick_cons_trip);
4843                 REG_WR(sc, BCE_HC_TX_QUICK_CONS_TRIP,
4844                        (1 << 16) | sc->bce_tx_quick_cons_trip);
4845         } else
4846 #endif
4847         /* Enable host interrupts. */
4848         bce_enable_intr(sc, 1);
4849
4850         bce_ifmedia_upd(ifp);
4851
4852         ifp->if_flags |= IFF_RUNNING;
4853         ifp->if_flags &= ~IFF_OACTIVE;
4854
4855         callout_reset(&sc->bce_tick_callout, hz, bce_tick, sc);
4856 back:
4857         if (error)
4858                 bce_stop(sc);
4859 }
4860
4861
4862 /****************************************************************************/
4863 /* Initialize the controller just enough so that any management firmware    */
4864 /* running on the device will continue to operate corectly.                 */
4865 /*                                                                          */
4866 /* Returns:                                                                 */
4867 /*   Nothing.                                                               */
4868 /****************************************************************************/
4869 static void
4870 bce_mgmt_init(struct bce_softc *sc)
4871 {
4872         struct ifnet *ifp = &sc->arpcom.ac_if;
4873
4874         /* Bail out if management firmware is not running. */
4875         if (!(sc->bce_flags & BCE_MFW_ENABLE_FLAG))
4876                 return;
4877
4878         /* Enable all critical blocks in the MAC. */
4879         if (BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5709 ||
4880             BCE_CHIP_NUM(sc) == BCE_CHIP_NUM_5716) {
4881                 REG_WR(sc, BCE_MISC_ENABLE_SET_BITS,
4882                     BCE_MISC_ENABLE_DEFAULT_XI);
4883         } else {
4884                 REG_WR(sc, BCE_MISC_ENABLE_SET_BITS, BCE_MISC_ENABLE_DEFAULT);
4885         }
4886         REG_RD(sc, BCE_MISC_ENABLE_SET_BITS);
4887         DELAY(20);
4888
4889         bce_ifmedia_upd(ifp);
4890 }
4891
4892
4893 /****************************************************************************/
4894 /* Encapsultes an mbuf cluster into the tx_bd chain structure and makes the */
4895 /* memory visible to the controller.                                        */
4896 /*                                                                          */
4897 /* Returns:                                                                 */
4898 /*   0 for success, positive value for failure.                             */
4899 /****************************************************************************/
4900 static int
4901 bce_encap(struct bce_softc *sc, struct mbuf **m_head)
4902 {
4903         bus_dma_segment_t segs[BCE_MAX_SEGMENTS];
4904         bus_dmamap_t map, tmp_map;
4905         struct mbuf *m0 = *m_head;
4906         struct tx_bd *txbd = NULL;
4907         uint16_t vlan_tag = 0, flags = 0;
4908         uint16_t chain_prod, chain_prod_start, prod;
4909         uint32_t prod_bseq;
4910         int i, error, maxsegs, nsegs;
4911 #ifdef BCE_DEBUG
4912         uint16_t debug_prod;
4913 #endif
4914
4915         /* Transfer any checksum offload flags to the bd. */
4916         if (m0->m_pkthdr.csum_flags) {
4917                 if (m0->m_pkthdr.csum_flags & CSUM_IP)
4918                         flags |= TX_BD_FLAGS_IP_CKSUM;
4919                 if (m0->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))
4920                         flags |= TX_BD_FLAGS_TCP_UDP_CKSUM;
4921         }
4922
4923         /* Transfer any VLAN tags to the bd. */
4924         if (m0->m_flags & M_VLANTAG) {
4925                 flags |= TX_BD_FLAGS_VLAN_TAG;
4926                 vlan_tag = m0->m_pkthdr.ether_vlantag;
4927         }
4928
4929         prod = sc->tx_prod;
4930         chain_prod_start = chain_prod = TX_CHAIN_IDX(prod);
4931
4932         /* Map the mbuf into DMAable memory. */
4933         map = sc->tx_mbuf_map[chain_prod_start];
4934
4935         maxsegs = sc->max_tx_bd - sc->used_tx_bd;
4936         KASSERT(maxsegs >= BCE_TX_SPARE_SPACE,
4937                 ("not enough segements %d\n", maxsegs));
4938         if (maxsegs > BCE_MAX_SEGMENTS)
4939                 maxsegs = BCE_MAX_SEGMENTS;
4940
4941         /* Map the mbuf into our DMA address space. */
4942         error = bus_dmamap_load_mbuf_defrag(sc->tx_mbuf_tag, map, m_head,
4943                         segs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
4944         if (error)
4945                 goto back;
4946         bus_dmamap_sync(sc->tx_mbuf_tag, map, BUS_DMASYNC_PREWRITE);
4947
4948         /* Reset m0 */
4949         m0 = *m_head;
4950
4951         /* prod points to an empty tx_bd at this point. */
4952         prod_bseq  = sc->tx_prod_bseq;
4953
4954 #ifdef BCE_DEBUG
4955         debug_prod = chain_prod;
4956 #endif
4957
4958         DBPRINT(sc, BCE_INFO_SEND,
4959                 "%s(): Start: prod = 0x%04X, chain_prod = %04X, "
4960                 "prod_bseq = 0x%08X\n",
4961                 __func__, prod, chain_prod, prod_bseq);
4962
4963         /*
4964          * Cycle through each mbuf segment that makes up
4965          * the outgoing frame, gathering the mapping info
4966          * for that segment and creating a tx_bd to for
4967          * the mbuf.
4968          */
4969         for (i = 0; i < nsegs; i++) {
4970                 chain_prod = TX_CHAIN_IDX(prod);
4971                 txbd= &sc->tx_bd_chain[TX_PAGE(chain_prod)][TX_IDX(chain_prod)];
4972
4973                 txbd->tx_bd_haddr_lo = htole32(BCE_ADDR_LO(segs[i].ds_addr));
4974                 txbd->tx_bd_haddr_hi = htole32(BCE_ADDR_HI(segs[i].ds_addr));
4975                 txbd->tx_bd_mss_nbytes = htole16(segs[i].ds_len);
4976                 txbd->tx_bd_vlan_tag = htole16(vlan_tag);
4977                 txbd->tx_bd_flags = htole16(flags);
4978                 prod_bseq += segs[i].ds_len;
4979                 if (i == 0)
4980                         txbd->tx_bd_flags |= htole16(TX_BD_FLAGS_START);
4981                 prod = NEXT_TX_BD(prod);
4982         }
4983
4984         /* Set the END flag on the last TX buffer descriptor. */
4985         txbd->tx_bd_flags |= htole16(TX_BD_FLAGS_END);
4986
4987         DBRUN(BCE_EXCESSIVE_SEND,
4988               bce_dump_tx_chain(sc, debug_prod, nsegs));
4989
4990         DBPRINT(sc, BCE_INFO_SEND,
4991                 "%s(): End: prod = 0x%04X, chain_prod = %04X, "
4992                 "prod_bseq = 0x%08X\n",
4993                 __func__, prod, chain_prod, prod_bseq);
4994
4995         /*
4996          * Ensure that the mbuf pointer for this transmission
4997          * is placed at the array index of the last
4998          * descriptor in this chain.  This is done
4999          * because a single map is used for all
5000          * segments of the mbuf and we don't want to
5001          * unload the map before all of the segments
5002          * have been freed.
5003          */
5004         sc->tx_mbuf_ptr[chain_prod] = m0;
5005
5006         tmp_map = sc->tx_mbuf_map[chain_prod];
5007         sc->tx_mbuf_map[chain_prod] = map;
5008         sc->tx_mbuf_map[chain_prod_start] = tmp_map;
5009
5010         sc->used_tx_bd += nsegs;
5011
5012         /* Update some debug statistic counters */
5013         DBRUNIF((sc->used_tx_bd > sc->tx_hi_watermark),
5014                 sc->tx_hi_watermark = sc->used_tx_bd);
5015         DBRUNIF((sc->used_tx_bd == sc->max_tx_bd), sc->tx_full_count++);
5016         DBRUNIF(1, sc->tx_mbuf_alloc++);
5017
5018         DBRUN(BCE_VERBOSE_SEND,
5019               bce_dump_tx_mbuf_chain(sc, chain_prod, nsegs));
5020
5021         /* prod points to the next free tx_bd at this point. */
5022         sc->tx_prod = prod;
5023         sc->tx_prod_bseq = prod_bseq;
5024 back:
5025         if (error) {
5026                 m_freem(*m_head);
5027                 *m_head = NULL;
5028         }
5029         return error;
5030 }
5031
5032
5033 /****************************************************************************/
5034 /* Main transmit routine when called from another routine with a lock.      */
5035 /*                                                                          */
5036 /* Returns:                                                                 */
5037 /*   Nothing.                                                               */
5038 /****************************************************************************/
5039 static void
5040 bce_start(struct ifnet *ifp)
5041 {
5042         struct bce_softc *sc = ifp->if_softc;
5043         int count = 0;
5044
5045         ASSERT_SERIALIZED(ifp->if_serializer);
5046
5047         /* If there's no link or the transmit queue is empty then just exit. */
5048         if (!sc->bce_link) {
5049                 ifq_purge(&ifp->if_snd);
5050                 return;
5051         }
5052
5053         if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
5054                 return;
5055
5056         DBPRINT(sc, BCE_INFO_SEND,
5057                 "%s(): Start: tx_prod = 0x%04X, tx_chain_prod = %04zX, "
5058                 "tx_prod_bseq = 0x%08X\n",
5059                 __func__,
5060                 sc->tx_prod, TX_CHAIN_IDX(sc->tx_prod), sc->tx_prod_bseq);
5061
5062         for (;;) {
5063                 struct mbuf *m_head;
5064
5065                 /*
5066                  * We keep BCE_TX_SPARE_SPACE entries, so bce_encap() is
5067                  * unlikely to fail.
5068                  */
5069                 if (sc->max_tx_bd - sc->used_tx_bd < BCE_TX_SPARE_SPACE) {
5070                         ifp->if_flags |= IFF_OACTIVE;
5071                         break;
5072                 }
5073
5074                 /* Check for any frames to send. */
5075                 m_head = ifq_dequeue(&ifp->if_snd, NULL);
5076                 if (m_head == NULL)
5077                         break;
5078
5079                 /*
5080                  * Pack the data into the transmit ring. If we
5081                  * don't have room, place the mbuf back at the
5082                  * head of the queue and set the OACTIVE flag
5083                  * to wait for the NIC to drain the chain.
5084                  */
5085                 if (bce_encap(sc, &m_head)) {
5086                         ifp->if_oerrors++;
5087                         if (sc->used_tx_bd == 0) {
5088                                 continue;
5089                         } else {
5090                                 ifp->if_flags |= IFF_OACTIVE;
5091                                 break;
5092                         }
5093                 }
5094
5095                 count++;
5096
5097                 /* Send a copy of the frame to any BPF listeners. */
5098                 ETHER_BPF_MTAP(ifp, m_head);
5099         }
5100
5101         if (count == 0) {
5102                 /* no packets were dequeued */
5103                 DBPRINT(sc, BCE_VERBOSE_SEND,
5104                         "%s(): No packets were dequeued\n", __func__);
5105                 return;
5106         }
5107
5108         DBPRINT(sc, BCE_INFO_SEND,
5109                 "%s(): End: tx_prod = 0x%04X, tx_chain_prod = 0x%04zX, "
5110                 "tx_prod_bseq = 0x%08X\n",
5111                 __func__,
5112                 sc->tx_prod, TX_CHAIN_IDX(sc->tx_prod), sc->tx_prod_bseq);
5113
5114         REG_WR(sc, BCE_MQ_COMMAND,
5115             REG_RD(sc, BCE_MQ_COMMAND) | BCE_MQ_COMMAND_NO_MAP_ERROR);
5116
5117         /* Start the transmit. */
5118         REG_WR16(sc, MB_GET_CID_ADDR(TX_CID) + BCE_L2CTX_TX_HOST_BIDX, sc->tx_prod);
5119         REG_WR(sc, MB_GET_CID_ADDR(TX_CID) + BCE_L2CTX_TX_HOST_BSEQ, sc->tx_prod_bseq);
5120
5121         /* Set the tx timeout. */
5122         ifp->if_timer = BCE_TX_TIMEOUT;
5123 }
5124
5125
5126 /****************************************************************************/
5127 /* Handles any IOCTL calls from the operating system.                       */
5128 /*                                                                          */
5129 /* Returns:                                                                 */
5130 /*   0 for success, positive value for failure.                             */
5131 /****************************************************************************/
5132 static int
5133 bce_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr)
5134 {
5135         struct bce_softc *sc = ifp->if_softc;
5136         struct ifreq *ifr = (struct ifreq *)data;
5137         struct mii_data *mii;
5138         int mask, error = 0;
5139
5140         ASSERT_SERIALIZED(ifp->if_serializer);
5141
5142         switch(command) {
5143         case SIOCSIFMTU:
5144                 /* Check that the MTU setting is supported. */
5145                 if (ifr->ifr_mtu < BCE_MIN_MTU ||
5146 #ifdef notyet
5147                     ifr->ifr_mtu > BCE_MAX_JUMBO_MTU
5148 #else
5149                     ifr->ifr_mtu > ETHERMTU
5150 #endif
5151                    ) {
5152                         error = EINVAL;
5153                         break;
5154                 }
5155
5156                 DBPRINT(sc, BCE_INFO, "Setting new MTU of %d\n", ifr->ifr_mtu);
5157
5158                 ifp->if_mtu = ifr->ifr_mtu;
5159                 ifp->if_flags &= ~IFF_RUNNING;  /* Force reinitialize */
5160                 bce_init(sc);
5161                 break;
5162
5163         case SIOCSIFFLAGS:
5164                 if (ifp->if_flags & IFF_UP) {
5165                         if (ifp->if_flags & IFF_RUNNING) {
5166                                 mask = ifp->if_flags ^ sc->bce_if_flags;
5167
5168                                 if (mask & (IFF_PROMISC | IFF_ALLMULTI))
5169                                         bce_set_rx_mode(sc);
5170                         } else {
5171                                 bce_init(sc);
5172                         }
5173                 } else if (ifp->if_flags & IFF_RUNNING) {
5174                         bce_stop(sc);
5175
5176                         /* If MFW is running, restart the controller a bit. */
5177                         if (sc->bce_flags & BCE_MFW_ENABLE_FLAG) {
5178                                 bce_reset(sc, BCE_DRV_MSG_CODE_RESET);
5179                                 bce_chipinit(sc);
5180                                 bce_mgmt_init(sc);
5181                         }
5182                 }
5183                 sc->bce_if_flags = ifp->if_flags;
5184                 break;
5185
5186         case SIOCADDMULTI:
5187         case SIOCDELMULTI:
5188                 if (ifp->if_flags & IFF_RUNNING)
5189                         bce_set_rx_mode(sc);
5190                 break;
5191
5192         case SIOCSIFMEDIA:
5193         case SIOCGIFMEDIA:
5194                 DBPRINT(sc, BCE_VERBOSE, "bce_phy_flags = 0x%08X\n",
5195                         sc->bce_phy_flags);
5196                 DBPRINT(sc, BCE_VERBOSE, "Copper media set/get\n");
5197
5198                 mii = device_get_softc(sc->bce_miibus);
5199                 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
5200                 break;
5201
5202         case SIOCSIFCAP:
5203                 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
5204                 DBPRINT(sc, BCE_INFO, "Received SIOCSIFCAP = 0x%08X\n",
5205                         (uint32_t) mask);
5206
5207                 if (mask & IFCAP_HWCSUM) {
5208                         ifp->if_capenable ^= (mask & IFCAP_HWCSUM);
5209                         if (IFCAP_HWCSUM & ifp->if_capenable)
5210                                 ifp->if_hwassist = BCE_IF_HWASSIST;
5211                         else
5212                                 ifp->if_hwassist = 0;
5213                 }
5214                 break;
5215
5216         default:
5217                 error = ether_ioctl(ifp, command, data);
5218                 break;
5219         }
5220         return error;
5221 }
5222
5223
5224 /****************************************************************************/
5225 /* Transmit timeout handler.                                                */
5226 /*                                                                          */
5227 /* Returns:                                                                 */
5228 /*   Nothing.                                                               */
5229 /****************************************************************************/
5230 static void
5231 bce_watchdog(struct ifnet *ifp)
5232 {
5233         struct bce_softc *sc = ifp->if_softc;
5234
5235         ASSERT_SERIALIZED(ifp->if_serializer);
5236
5237         DBRUN(BCE_VERBOSE_SEND,
5238               bce_dump_driver_state(sc);
5239               bce_dump_status_block(sc));
5240
5241         /*
5242          * If we are in this routine because of pause frames, then
5243          * don't reset the hardware.
5244          */
5245         if (REG_RD(sc, BCE_EMAC_TX_STATUS) & BCE_EMAC_TX_STATUS_XOFFED)
5246                 return;
5247
5248         if_printf(ifp, "Watchdog timeout occurred, resetting!\n");
5249
5250         /* DBRUN(BCE_FATAL, bce_breakpoint(sc)); */
5251
5252         ifp->if_flags &= ~IFF_RUNNING;  /* Force reinitialize */
5253         bce_init(sc);
5254
5255         ifp->if_oerrors++;
5256
5257         if (!ifq_is_empty(&ifp->if_snd))
5258                 if_devstart(ifp);
5259 }
5260
5261
5262 #ifdef DEVICE_POLLING
5263
5264 static void
5265 bce_poll(struct ifnet&