root/dev/pci/if_devar.h

INCLUDED FROM

DEFINITIONS

1. tulip_regfile_t
2. tulip_ringinfo_t
3. TULIP_21040
4. TULIP_DE425
5. TULIP_21041
6. TULIP_21140
7. TULIP_21142
8. TULIP_21140A
9. TULIP_21143
10. TULIP_CHIPID_UNKNOWN
11. tulip_chipid_t
12. TULIP_MEDIA_UNKNOWN
13. TULIP_MEDIA_10BASET
14. TULIP_MEDIA_10BASET_FD
15. TULIP_MEDIA_BNC
16. TULIP_MEDIA_AUI
17. TULIP_MEDIA_EXTSIA
18. TULIP_MEDIA_AUIBNC
19. TULIP_MEDIA_100BASETX
20. TULIP_MEDIA_100BASETX_FD
21. TULIP_MEDIA_100BASET4
22. TULIP_MEDIA_100BASEFX
23. TULIP_MEDIA_100BASEFX_FD
24. TULIP_MEDIA_MAX
25. tulip_media_t
26. tulip_media_info_t
27. TULIP_21040_GENERIC
28. TULIP_21140_ISV
29. TULIP_21142_ISV
30. TULIP_21143_ISV
31. TULIP_21140_DEC_EB
32. TULIP_21140_MII
33. TULIP_21140_DEC_DE500
34. TULIP_21140_SMC_9332
35. TULIP_21140_COGENT_EM100
36. TULIP_21140_ZNYX_ZX34X
37. TULIP_21140_ASANTE
38. TULIP_21140_EN1207
39. TULIP_21041_GENERIC
40. tulip_board_t
41. TULIP_MEDIAPOLL_TIMER
42. TULIP_MEDIAPOLL_FASTTIMER
43. TULIP_MEDIAPOLL_LINKFAIL
44. TULIP_MEDIAPOLL_LINKPASS
45. TULIP_MEDIAPOLL_START
46. TULIP_MEDIAPOLL_TXPROBE_OK
47. TULIP_MEDIAPOLL_TXPROBE_FAILED
48. TULIP_MEDIAPOLL_MAX
49. tulip_mediapoll_event_t
50. TULIP_LINK_DOWN
51. TULIP_LINK_UP
52. TULIP_LINK_UNKNOWN
53. tulip_link_status_t
54. tulip_boardsw_t
55. PHY_MODE_10T
56. PHY_MODE_100TX
57. PHY_MODE_100T4
58. PHY_MODE_FULLDUPLEX
59. PHY_MODE_MAX
60. tulip_phy_mode_t
61. tulip_phy_modedata_t
62. tulip_phy_attr_t
63. TULIP_PROBE_INACTIVE
64. TULIP_PROBE_PHYRESET
65. TULIP_PROBE_PHYAUTONEG
66. TULIP_PROBE_GPRTEST
67. TULIP_PROBE_MEDIATEST
68. TULIP_PROBE_FAILED
69. tulip_probe_state_t
70. tulip_dot3_stats_t
71. TULIP_PERFREAD
72. TULIP_PERFREAD

    1 /*      $OpenBSD: if_devar.h,v 1.27 2006/07/08 04:15:36 brad Exp $      */
    2 /*      $NetBSD: if_devar.h,v 1.13 1997/06/08 18:46:36 thorpej Exp $    */
    4 /*-
    5  * Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. The name of the author may not be used to endorse or promote products
   14  *    derived from this software without specific prior written permission
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   26  *
   27  * Id: if_devar.h,v 1.23 1997/06/03 18:51:16 thomas Exp
   28  */
   30 #define TULIP_CSR_READ(sc, csr) \
bus_space_read_4((sc)->tulip_bustag, (sc)->tulip_bushandle, (sc)->tulip_csrs.csr)
   32 #define TULIP_CSR_WRITE(sc, csr, val) \
bus_space_write_4((sc)->tulip_bustag, (sc)->tulip_bushandle, (sc)->tulip_csrs.csr, (val))
   35 #define TULIP_CSR_READBYTE(sc, csr) \
bus_space_read_1((sc)->tulip_bustag, (sc)->tulip_bushandle, (sc)->tulip_csrs.csr)
   37 #define TULIP_CSR_WRITEBYTE(sc, csr, val) \
bus_space_write_1((sc)->tulip_bustag, (sc)->tulip_bushandle, (sc)->tulip_csrs.csr, (val))
   40 #ifdef TULIP_IOMAPPED
   41 #define TULIP_PCI_CSRSIZE       8
   42 #define TULIP_PCI_CSROFFSET     0
   43 #else /* TULIP_IOMAPPED */
   44 #define TULIP_PCI_CSRSIZE       8
   45 #define TULIP_PCI_CSROFFSET     0
   46 #endif /* TULIP_IOMAPPED */
   48 /*
   49  * This structure contains "pointers" for the registers on
   50  * the various 21x4x chips.  CSR0 through CSR8 are common
   51  * to all chips.  After that, it gets messy...
   52  */
   53 typedef struct {
bus_size_t csr_busmode;                     /* CSR0 */
bus_size_t csr_txpoll;                      /* CSR1 */
bus_size_t csr_rxpoll;                      /* CSR2 */
bus_size_t csr_rxlist;                      /* CSR3 */
bus_size_t csr_txlist;                      /* CSR4 */
bus_size_t csr_status;                      /* CSR5 */
bus_size_t csr_command;                     /* CSR6 */
bus_size_t csr_intr;                        /* CSR7 */
bus_size_t csr_missed_frames;               /* CSR8 */
bus_size_t csr_9;                   /* CSR9 */
bus_size_t csr_10;                  /* CSR10 */
bus_size_t csr_11;                  /* CSR11 */
bus_size_t csr_12;                  /* CSR12 */
bus_size_t csr_13;                  /* CSR13 */
bus_size_t csr_14;                  /* CSR14 */
bus_size_t csr_15;                  /* CSR15 */
   70 } tulip_regfile_t;
   72 #define csr_enetrom             csr_9   /* 21040 */
   73 #define csr_reserved            csr_10  /* 21040 */
   74 #define csr_full_duplex         csr_11  /* 21040 */
   75 #define csr_bootrom             csr_10  /* 21041/21140A/?? */
   76 #define csr_gp                  csr_12  /* 21140* */
   77 #define csr_watchdog            csr_15  /* 21140* */
   78 #define csr_gp_timer            csr_11  /* 21041/21140* */
   79 #define csr_srom_mii            csr_9   /* 21041/21140* */
   80 #define csr_sia_status          csr_12  /* 2104x */
   81 #define csr_sia_connectivity    csr_13  /* 2104x */
   82 #define csr_sia_tx_rx           csr_14  /* 2104x */
   83 #define csr_sia_general         csr_15  /* 2104x */
   85 /*
   86  * While 21x4x allows chaining of its descriptors, this driver
   87  * doesn't take advantage of it.  We keep the descriptors in a
   88  * traditional FIFO ring.
   89  */
   90 typedef struct {
tulip_desc_t *ri_first;     /* first entry in ring */
tulip_desc_t *ri_last;      /* one after last entry */
tulip_desc_t *ri_nextin;    /* next to processed by host */
tulip_desc_t *ri_nextout;   /* next to processed by adapter */
   95     int ri_max;
   96     int ri_free;
   97 } tulip_ringinfo_t;
   99 /*
  100  * The 21040 has a stupid restriction in that the receive
  101  * buffers must be longword aligned.  But since Ethernet
  102  * headers are not a multiple of longwords in size this forces
  103  * the data to non-longword aligned.  Since IP requires the
  104  * data to be longword aligned, we need to copy it after it has
  105  * been DMA'ed in our memory.
  106  *
  107  * Since we have to copy it anyways, we might as well as allocate
  108  * dedicated receive space for the input.  This allows to use a
  109  * small receive buffer size and more ring entries to be able to
  110  * better keep with a flood of tiny Ethernet packets.
  111  *
  112  * The receive space MUST ALWAYS be a multiple of the page size.
  113  * And the number of receive descriptors multiplied by the size
  114  * of the receive buffers must equal the recevive space.  This
  115  * is so that we can manipulate the page tables so that even if a
  116  * packet wraps around the end of the receive space, we can
  117  * treat it as virtually contiguous.
  118  *
  119  * The above used to be true (the stupid restriction is still true)
  120  * but we gone to directly DMA'ing into MBUFs (unless it's on an
  121  * architecture which can't handle unaligned accesses) because with
  122  * 100Mb/s cards the copying is just too much of a hit.
  123  */
  124 #if !defined(__i386__)
  125 #define TULIP_COPY_RXDATA       1
  126 #endif
  128 #define TULIP_DATA_PER_DESC     2032
  129 #define TULIP_TXTIMER           4
  130 #define TULIP_RXDESCS           48
  131 #define TULIP_TXDESCS           32
  132 #define TULIP_RXQ_TARGET        32
  133 #if TULIP_RXQ_TARGET >= TULIP_RXDESCS
  134 #error TULIP_RXQ_TARGET must be less than TULIP_RXDESCS
  135 #endif
  136 #define TULIP_RX_BUFLEN         ((MCLBYTES < 2048 ? MCLBYTES : 2048) - 16)
  138 /*
  139  * Forward reference to make C happy.
  140  */
  141 typedef struct _tulip_softc_t tulip_softc_t;
  143 /*
  144  * The various controllers support.  Technically the DE425 is just
  145  * a 21040 on EISA.  But since it remarkably difference from normal
  146  * 21040s, we give it its own chip id.
  147  */
  149 typedef enum {
TULIP_21040, TULIP_DE425,
TULIP_21041,
TULIP_21140, TULIP_21140A, TULIP_21142,
TULIP_21143,
TULIP_CHIPID_UNKNOWN
  155 } tulip_chipid_t;
  157 /*
  158  * Various physical media types supported.
  159  * BNCAUI is BNC or AUI since on the 21040 you can't really tell
  160  * which is in use.
  161  */
  162 typedef enum {
TULIP_MEDIA_UNKNOWN,
TULIP_MEDIA_10BASET,
TULIP_MEDIA_10BASET_FD,
TULIP_MEDIA_BNC,
TULIP_MEDIA_AUI,
  168     TULIP_MEDIA_EXTSIA,
TULIP_MEDIA_AUIBNC,
TULIP_MEDIA_100BASETX,
TULIP_MEDIA_100BASETX_FD,
TULIP_MEDIA_100BASET4,
TULIP_MEDIA_100BASEFX,
TULIP_MEDIA_100BASEFX_FD,
TULIP_MEDIA_MAX
  176 } tulip_media_t;
  178 #define TULIP_BIT(b)            (1L << ((int)(b)))
  179 #define TULIP_FDBIT(m)          (1L << ((int)TULIP_MEDIA_ ## m ## _FD))
  180 #define TULIP_MBIT(m)           (1L << ((int)TULIP_MEDIA_ ## m ))
  181 #define TULIP_IS_MEDIA_FD(m)    (TULIP_BIT(m) & \
  182                                  (TULIP_FDBIT(10BASET) \
  183                                   |TULIP_FDBIT(100BASETX) \
  184                                   |TULIP_FDBIT(100BASEFX)))
  185 #define TULIP_CAN_MEDIA_FD(m)   (TULIP_BIT(m) & \
  186                                  (TULIP_MBIT(10BASET) \
  187                                   |TULIP_MBIT(100BASETX) \
  188                                   |TULIP_MBIT(100BASEFX)))
  189 #define TULIP_FD_MEDIA_OF(m)    ((tulip_media_t)((m) + 1))
  190 #define TULIP_HD_MEDIA_OF(m)    ((tulip_media_t)((m) - 1))
  191 #define TULIP_IS_MEDIA_100MB(m) ((m) >= TULIP_MEDIA_100BASETX)
  192 #define TULIP_IS_MEDIA_TP(m)    ((TULIP_BIT(m) & \
  193                                   (TULIP_MBIT(BNC) \
  194                                    |TULIP_MBIT(AUI) \
  195                                    |TULIP_MBIT(AUIBNC) \
  196                                    |TULIP_MBIT(EXTSIA))) == 0)
  198 #define TULIP_SROM_ATTR_MII             0x0100
  199 #define TULIP_SROM_ATTR_NWAY            0x0200
  200 #define TULIP_SROM_ATTR_AUTOSENSE       0x0400
  201 #define TULIP_SROM_ATTR_POWERUP         0x0800
  202 #define TULIP_SROM_ATTR_NOLINKPASS      0x1000
  204 typedef struct {
  205     enum {
TULIP_MEDIAINFO_NONE,
TULIP_MEDIAINFO_SIA,
TULIP_MEDIAINFO_GPR,
TULIP_MEDIAINFO_MII,
TULIP_MEDIAINFO_RESET,
TULIP_MEDIAINFO_SYM
  212     } mi_type;
  213     union {
  214         struct {
u_int16_t sia_connectivity;
u_int16_t sia_tx_rx;
u_int16_t sia_general;
u_int32_t sia_gp_control;   /* 21142/21143 */
u_int32_t sia_gp_data;      /* 21142/21143 */
  220         } un_sia;
  221         struct {
u_int32_t gpr_cmdmode;
u_int32_t gpr_gpcontrol;    /* 21142/21143 */
u_int32_t gpr_gpdata;
u_int8_t gpr_actmask;
u_int8_t gpr_actdata;
u_int8_t gpr_default : 1;
  228         } un_gpr;
  229         struct {
u_int32_t mii_mediamask;
u_int16_t mii_capabilities;
u_int16_t mii_advertisement;
u_int16_t mii_full_duplex;
u_int16_t mii_tx_threshold;
u_int16_t mii_interrupt;    /* 21142/21143 */
u_int8_t mii_phyaddr;
u_int8_t mii_gpr_length;
u_int8_t mii_gpr_offset;
u_int8_t mii_reset_length;
u_int8_t mii_reset_offset;
u_int32_t mii_phyid;
  242         } un_mii;
  243     } mi_un;
  244 } tulip_media_info_t;
  246 #define mi_sia_connectivity     mi_un.un_sia.sia_connectivity
  247 #define mi_sia_tx_rx            mi_un.un_sia.sia_tx_rx
  248 #define mi_sia_general          mi_un.un_sia.sia_general
  249 #define mi_sia_gp_control       mi_un.un_sia.sia_gp_control
  250 #define mi_sia_gp_data          mi_un.un_sia.sia_gp_data
  252 #define mi_gpcontrol            mi_un.un_gpr.gpr_gpcontrol
  253 #define mi_gpdata               mi_un.un_gpr.gpr_gpdata
  254 #define mi_actmask              mi_un.un_gpr.gpr_actmask
  255 #define mi_actdata              mi_un.un_gpr.gpr_actdata
  256 #define mi_default              mi_un.un_gpr.gpr_default
  257 #define mi_cmdmode              mi_un.un_gpr.gpr_cmdmode
  259 #define mi_phyaddr              mi_un.un_mii.mii_phyaddr
  260 #define mi_gpr_length           mi_un.un_mii.mii_gpr_length
  261 #define mi_gpr_offset           mi_un.un_mii.mii_gpr_offset
  262 #define mi_reset_length         mi_un.un_mii.mii_reset_length
  263 #define mi_reset_offset         mi_un.un_mii.mii_reset_offset
  264 #define mi_capabilities         mi_un.un_mii.mii_capabilities
  265 #define mi_advertisement        mi_un.un_mii.mii_advertisement
  266 #define mi_full_duplex          mi_un.un_mii.mii_full_duplex
  267 #define mi_tx_threshold         mi_un.un_mii.mii_tx_threshold
  268 #define mi_mediamask            mi_un.un_mii.mii_mediamask
  269 #define mi_mii_interrupt        mi_un.un_mii.mii_interrupt
  270 #define mi_phyid                mi_un.un_mii.mii_phyid
  272 #define TULIP_MEDIAINFO_SIA_INIT(sc, mi, chipid, media) do { \
  273     (mi)->mi_type = TULIP_MEDIAINFO_SIA; \
sc->tulip_mediums[TULIP_MEDIA_ ## media] = (mi); \
  275     (mi)->mi_sia_connectivity = TULIP_ ## chipid ## _SIACONN_ ## media; \
  276     (mi)->mi_sia_tx_rx        = TULIP_ ## chipid ## _SIATXRX_ ## media; \
  277     (mi)->mi_sia_general      = TULIP_ ## chipid ## _SIAGEN_ ## media; \
  278 } while (0)
  280 #define TULIP_MEDIAINFO_ADD_CAPABILITY(sc, mi, media) do {      \
  281     if ((sc)->tulip_mediums[TULIP_MEDIA_ ## media] == NULL      \
  282             && ((mi)->mi_capabilities & PHYSTS_ ## media)) {    \
  283         (sc)->tulip_mediums[TULIP_MEDIA_ ## media] = (mi);      \
  284         (mi)->mi_mediamask |= TULIP_BIT(TULIP_MEDIA_ ## media); \
  285     } \
  286 } while (0)
  288 #define TULIP_MII_NOPHY         32
  289 /*
  290  * Some boards need to treated specially.  The following enumeration
  291  * identifies the cards with quirks (or those we just want to single
  292  * out for special merit or scorn).
  293  */
  294 typedef enum {
TULIP_21040_GENERIC,                /* Generic 21040 (works with most any board) */
TULIP_21140_ISV,                    /* Digital Semicondutor 21140 ISV SROM Format */
  297     TULIP_21142_ISV,                    /* Digital Semicondutor 21142 ISV SROM Format */
  298     TULIP_21143_ISV,                    /* Digital Semicondutor 21143 ISV SROM Format */
TULIP_21140_DEC_EB,                 /* Digital Semicondutor 21140 Evaluation Board */
  300     TULIP_21140_MII,                    /* 21140[A] with MII */
  301     TULIP_21140_DEC_DE500,              /* Digital DE500-?? 10/100 */
TULIP_21140_SMC_9332,               /* SMC 9332 */
TULIP_21140_COGENT_EM100,           /* Cogent EM100 100 only */
TULIP_21140_ZNYX_ZX34X,             /* ZNYX ZX342 10/100 */
  305     TULIP_21140_ASANTE,                 /* AsanteFast 10/100 */
TULIP_21140_EN1207,                 /* Accton EN2107 10/100 BNC */
TULIP_21041_GENERIC                 /* Generic 21041 card */
  308 } tulip_board_t;
  310 typedef enum {
TULIP_MEDIAPOLL_TIMER,              /* 100ms timer fired */
  312     TULIP_MEDIAPOLL_FASTTIMER,          /* <100ms timer fired */
TULIP_MEDIAPOLL_LINKFAIL,           /* called from interrupt routine */
TULIP_MEDIAPOLL_LINKPASS,           /* called from interrupt routine */
TULIP_MEDIAPOLL_START,              /* start a media probe (called from reset) */
TULIP_MEDIAPOLL_TXPROBE_OK,         /* txprobe succeeded */
TULIP_MEDIAPOLL_TXPROBE_FAILED,     /* txprobe failed */
TULIP_MEDIAPOLL_MAX
  319 } tulip_mediapoll_event_t;
  321 typedef enum {
TULIP_LINK_DOWN,                    /* Link is down */
TULIP_LINK_UP,                      /* link is ok */
TULIP_LINK_UNKNOWN                  /* we can't tell either way */
  325 } tulip_link_status_t;
  327 /*
  328  * This data structure is used to abstract out the quirks.
  329  * media_probe  = tries to determine the media type.
  330  * media_select = enables the current media (or autosenses)
  331  * media_poll   = autosenses media
  332  * media_preset = 21140, etal requires bit to set before the
  333  *                the software reset; hence pre-set.  Should be
  334  *                pre-reset but that's ugly.
  335  */
  337 typedef struct {
tulip_board_t bd_type;
  339     void (*bd_media_probe)(tulip_softc_t * const sc);
  340     void (*bd_media_select)(tulip_softc_t * const sc);
  341     void (*bd_media_poll)(tulip_softc_t * const sc, tulip_mediapoll_event_t event);
  342     void (*bd_media_preset)(tulip_softc_t * const sc);
  343 } tulip_boardsw_t;
  345 /*
  346  * The next few declarations are for MII/PHY based board.
  347  *
  348  *    The first enumeration identifies a superset of various datums
  349  * that can be obtained from various PHY chips.  Not all PHYs will
  350  * support all datums.
  351  *    The modedata structure indicates what register contains
  352  * a datum, what mask is applied the register contents, and what the
  353  * result should be.
  354  *    The attr structure records information about a supported PHY.
  355  *    The phy structure records information about a PHY instance.
  356  */
  358 typedef enum {
PHY_MODE_10T,
PHY_MODE_100TX,
PHY_MODE_100T4,
PHY_MODE_FULLDUPLEX,
PHY_MODE_MAX
  364 } tulip_phy_mode_t;
  366 typedef struct {
u_int16_t pm_regno;
u_int16_t pm_mask;
u_int16_t pm_value;
  370 } tulip_phy_modedata_t;
  372 typedef struct {
u_int32_t attr_id;
u_int16_t attr_flags;
  375 #define PHY_NEED_HARD_RESET     0x0001
  376 #define PHY_DUAL_CYCLE_TA       0x0002
tulip_phy_modedata_t attr_modes[PHY_MODE_MAX];
  378 #ifdef TULIP_DEBUG
  379     const char *attr_name;
  380 #endif
  381 } tulip_phy_attr_t;
  383 /*
  384  * Various probe states used when trying to autosense the media.
  385  */
  387 typedef enum {
TULIP_PROBE_INACTIVE,
TULIP_PROBE_PHYRESET,
TULIP_PROBE_PHYAUTONEG,
TULIP_PROBE_GPRTEST,
TULIP_PROBE_MEDIATEST,
TULIP_PROBE_FAILED
  394 } tulip_probe_state_t;
  396 typedef struct {
  397     /*
  398      * Transmit Statistics
  399      */
u_int32_t dot3StatsSingleCollisionFrames;
u_int32_t dot3StatsMultipleCollisionFrames;
u_int32_t dot3StatsSQETestErrors;
u_int32_t dot3StatsDeferredTransmissions;
u_int32_t dot3StatsLateCollisions;
u_int32_t dot3StatsExcessiveCollisions;
u_int32_t dot3StatsCarrierSenseErrors;
u_int32_t dot3StatsInternalMacTransmitErrors;
u_int32_t dot3StatsInternalTransmitUnderflows;      /* not in rfc1650! */
u_int32_t dot3StatsInternalTransmitBabbles;         /* not in rfc1650! */
  410     /*
  411      * Receive Statistics
  412      */
u_int32_t dot3StatsMissedFrames;    /* not in rfc1650! */
u_int32_t dot3StatsAlignmentErrors;
u_int32_t dot3StatsFCSErrors;
u_int32_t dot3StatsFrameTooLongs;
u_int32_t dot3StatsInternalMacReceiveErrors;
  418 } tulip_dot3_stats_t;
  420 /*
  421  * Now to important stuff.  This is softc structure (where does softc
  422  * come from??? No idea) for the tulip device.
  423  *
  424  */
  425 struct _tulip_softc_t {
  426     struct device tulip_dev;            /* base device */
  427     void *tulip_ih;                     /* intrrupt vectoring */
  428     void *tulip_ats;                    /* shutdown hook */
bus_space_tag_t tulip_bustag;       /* tag of CSR region being used */
bus_space_handle_t tulip_bushandle; /* handle for CSR region being used */
pci_chipset_tag_t tulip_pc;
u_int8_t tulip_enaddr[ETHER_ADDR_LEN];
  434     struct ifmedia tulip_ifmedia;
bus_dma_tag_t tulip_dmatag;         /* bus DMA tag */
bus_dmamap_t tulip_setupmap;
bus_dmamap_t tulip_txdescmap;
bus_dmamap_t tulip_txmaps[TULIP_TXDESCS];
  439     unsigned tulip_txmaps_free;
bus_dmamap_t tulip_rxdescmap;
bus_dmamap_t tulip_rxmaps[TULIP_RXDESCS];
  442     unsigned tulip_rxmaps_free;
  443     struct arpcom tulip_ac;
  444     struct timeout tulip_ftmo, tulip_stmo;
tulip_regfile_t tulip_csrs;
u_int32_t tulip_flags;
  447 #define TULIP_WANTSETUP         0x00000001
  448 #define TULIP_WANTHASHPERFECT   0x00000002
  449 #define TULIP_WANTHASHONLY      0x00000004
  450 #define TULIP_DOINGSETUP        0x00000008
  451 #define TULIP_PRINTMEDIA        0x00000010
  452 #define TULIP_TXPROBE_ACTIVE    0x00000020
  453 #define TULIP_ALLMULTI          0x00000040
  454 #define TULIP_WANTRXACT         0x00000080
  455 #define TULIP_RXACT             0x00000100
  456 #define TULIP_INRESET           0x00000200
  457 #define TULIP_NEEDRESET         0x00000400
  458 #define TULIP_SQETEST           0x00000800
  459 #define TULIP_FULLDUPLEX        0x00001000
  460 #define TULIP_xxxxxx1           0x00002000
  461 #define TULIP_WANTTXSTART       0x00004000
  462 #define TULIP_NEWTXTHRESH       0x00008000
  463 #define TULIP_NOAUTOSENSE       0x00010000
  464 #define TULIP_PRINTLINKUP       0x00020000
  465 #define TULIP_LINKUP            0x00040000
  466 #define TULIP_RXBUFSLOW         0x00080000
  467 #define TULIP_NOMESSAGES        0x00100000
  468 #define TULIP_SYSTEMERROR       0x00200000
  469 #define TULIP_TIMEOUTPENDING    0x00400000
  470 #define TULIP_xxxxxx2           0x00800000
  471 #define TULIP_TRYNWAY           0x01000000
  472 #define TULIP_DIDNWAY           0x02000000
  473 #define TULIP_RXIGNORE          0x04000000
  474 #define TULIP_PROBE1STPASS      0x08000000
  475 #define TULIP_DEVICEPROBE       0x10000000
  476 #define TULIP_PROMISC           0x20000000
  477 #define TULIP_HASHONLY          0x40000000
  478 #define TULIP_xxxxxx3           0x80000000
  479     /* only 4 bits left! */
u_int32_t tulip_features;   /* static bits indicating features of chip */
  481 #define TULIP_HAVE_GPR          0x00000001      /* have gp register (140[A]) */
  482 #define TULIP_HAVE_RXBADOVRFLW  0x00000002      /* RX corrupts on overflow */
  483 #define TULIP_HAVE_POWERMGMT    0x00000004      /* Snooze/sleep modes */
  484 #define TULIP_HAVE_MII          0x00000008      /* Some medium on MII */
  485 #define TULIP_HAVE_SIANWAY      0x00000010      /* SIA does NWAY */
  486 #define TULIP_HAVE_DUALSENSE    0x00000020      /* SIA senses both AUI & TP */
  487 #define TULIP_HAVE_SIAGP        0x00000040      /* SIA has a GP port */
  488 #define TULIP_HAVE_BROKEN_HASH  0x00000080      /* Broken Multicast Hash */
  489 #define TULIP_HAVE_ISVSROM      0x00000100      /* uses ISV SROM Format */
  490 #define TULIP_HAVE_BASEROM      0x00000200      /* Board ROM can be cloned */
  491 #define TULIP_HAVE_SLAVEDROM    0x00000400      /* Board ROM cloned */
  492 #define TULIP_HAVE_SLAVEDINTR   0x00000800      /* Board slaved interrupt */
  493 #define TULIP_HAVE_SHAREDINTR   0x00001000      /* Board shares interrupts */
  494 #define TULIP_HAVE_OKROM        0x00002000      /* ROM was recognized */
  495 #define TULIP_HAVE_NOMEDIA      0x00004000      /* did not detect any media */
  496 #define TULIP_HAVE_STOREFWD     0x00008000      /* have CMD_STOREFWD */
  497 #define TULIP_HAVE_SIA100       0x00010000      /* has LS100 in SIA status */
  498 #define TULIP_HAVE_OKSROM       0x00020000      /* SROM CRC is OK */
u_int32_t tulip_intrmask;   /* our copy of csr_intr */
u_int32_t tulip_cmdmode;    /* our copy of csr_cmdmode */
u_int32_t tulip_last_system_error : 3;      /* last system error (only value is
  502                                                    TULIP_SYSTEMERROR is also set) */
u_int32_t tulip_txtimer;            /* transmission timer */
u_int32_t tulip_system_errors;      /* number of system errors encountered */
u_int32_t tulip_statusbits; /* status bits from CSR5 that may need to be printed */
tulip_media_info_t *tulip_mediums[TULIP_MEDIA_MAX]; /* indexes into mediainfo */
tulip_media_t tulip_media;                  /* current media type */
u_int32_t tulip_abilities;  /* remote system's abiltities (as defined in IEEE 802.3u) */
u_int8_t tulip_revinfo;                     /* revision of chip */
u_int8_t tulip_phyaddr;                     /* 0..31 -- address of current phy */
u_int8_t tulip_gpinit;                      /* active pins on 21140 */
u_int8_t tulip_gpdata;                      /* default gpdata for 21140 */
  516     struct {
u_int8_t probe_count;                   /* count of probe operations */
int32_t probe_timeout;                  /* time in ms of probe timeout */
tulip_probe_state_t probe_state;        /* current media probe state */
tulip_media_t probe_media;              /* current media being probed */
u_int32_t probe_mediamask;              /* medias checked */
u_int32_t probe_passes;                 /* times autosense failed */
u_int32_t probe_txprobes;               /* txprobes attempted */
  524     } tulip_probe;
  525 #define tulip_probe_count       tulip_probe.probe_count
  526 #define tulip_probe_timeout     tulip_probe.probe_timeout
  527 #define tulip_probe_state       tulip_probe.probe_state
  528 #define tulip_probe_media       tulip_probe.probe_media
  529 #define tulip_probe_mediamask   tulip_probe.probe_mediamask
  530 #define tulip_probe_passes      tulip_probe.probe_passes
tulip_chipid_t tulip_chipid;                /* type of chip we are using */
  533     const tulip_boardsw_t *tulip_boardsw;       /* board/chip characteristics */
tulip_softc_t *tulip_slaves;                /* slaved devices (ZX3xx) */
  535 #if defined(TULIP_DEBUG)
  536     /*
  537      * Debugging/Statistical information
  538      */
  539     struct {
tulip_media_t dbg_last_media;
u_int32_t dbg_intrs;
u_int32_t dbg_media_probes;
u_int32_t dbg_txprobe_nocarr;
u_int32_t dbg_txprobe_exccoll;
u_int32_t dbg_link_downed;
u_int32_t dbg_link_suspected;
u_int32_t dbg_link_intrs;
u_int32_t dbg_link_pollintrs;
u_int32_t dbg_link_failures;
u_int32_t dbg_nway_starts;
u_int32_t dbg_nway_failures;
u_int16_t dbg_phyregs[32][4];
u_int32_t dbg_rxlowbufs;
u_int32_t dbg_rxintrs;
u_int32_t dbg_last_rxintrs;
u_int32_t dbg_high_rxintrs_hz;
u_int32_t dbg_no_txmaps;
u_int32_t dbg_txput_finishes[8];
u_int32_t dbg_txprobes_ok[TULIP_MEDIA_MAX];
u_int32_t dbg_txprobes_failed[TULIP_MEDIA_MAX];
u_int32_t dbg_events[TULIP_MEDIAPOLL_MAX];
u_int32_t dbg_rxpktsperintr[TULIP_RXDESCS];
  563     } tulip_dbg;
  564 #endif
  565 #if defined(TULIP_PERFSTATS)
  566 #define TULIP_PERF_CURRENT      0
  567 #define TULIP_PERF_PREVIOUS     1
  568 #define TULIP_PERF_TOTAL        2
  569 #define TULIP_PERF_MAX          3
  570     struct tulip_perfstats {
u_quad_t perf_intr_cycles;
u_quad_t perf_ifstart_cycles;
u_quad_t perf_ifioctl_cycles;
u_quad_t perf_ifwatchdog_cycles;
u_quad_t perf_timeout_cycles;
u_quad_t perf_txput_cycles;
u_quad_t perf_txintr_cycles;
u_quad_t perf_rxintr_cycles;
u_quad_t perf_rxget_cycles;
  580         unsigned perf_intr;
  581         unsigned perf_ifstart;
  582         unsigned perf_ifioctl;
  583         unsigned perf_ifwatchdog;
  584         unsigned perf_timeout;
  585         unsigned perf_txput;
  586         unsigned perf_txintr;
  587         unsigned perf_rxintr;
  588         unsigned perf_rxget;
  589     } tulip_perfstats[TULIP_PERF_MAX];
  590 #define tulip_curperfstats              tulip_perfstats[TULIP_PERF_CURRENT]
  591 #endif
  592     struct ifqueue tulip_txq;
  593     struct ifqueue tulip_rxq;
tulip_dot3_stats_t tulip_dot3stats;
tulip_ringinfo_t tulip_rxinfo;
tulip_ringinfo_t tulip_txinfo;
tulip_media_info_t tulip_mediainfo[10];
  598     /*
  599      * The setup buffers for sending the setup frame to the chip.
  600      * one is the one being sent while the other is the one being
  601      * filled.
  602      */
u_int32_t tulip_setupbuf[192/sizeof(u_int32_t)];
u_int32_t tulip_setupdata[192/sizeof(u_int32_t)];
  605     char tulip_boardid[16];             /* buffer for board ID */
u_int8_t tulip_rombuf[128];
  607     struct device *tulip_pci_busno;     /* needed for multiport boards */
u_int8_t tulip_pci_devno;           /* needed for multiport boards */
u_int8_t tulip_connidx;
tulip_srom_connection_t tulip_conntype;
tulip_desc_t *tulip_rxdescs;
tulip_desc_t *tulip_txdescs;
  613 };
  615 #define TULIP_DO_AUTOSENSE(sc)  (IFM_SUBTYPE((sc)->tulip_ifmedia.ifm_media) == IFM_AUTO)
  617 static const char * const tulip_chipdescs[] = {
  618     "21040",
NULL,
  620     "21041",
  621     "21140",
  622     "21140A",
  623     "21142",
  624     "21143",
  625     "82C168",
  626 };
  628 #ifdef TULIP_DEBUG
  629 static const char * const tulip_mediums[] = {
  630     "unknown",                  /* TULIP_MEDIA_UNKNOWN */
  631     "10baseT",                  /* TULIP_MEDIA_10BASET */
  632     "Full Duplex 10baseT",      /* TULIP_MEDIA_10BASET_FD */
  633     "BNC",                      /* TULIP_MEDIA_BNC */
  634     "AUI",                      /* TULIP_MEDIA_AUI */
  635     "External SIA",             /* TULIP_MEDIA_EXTSIA */
  636     "AUI/BNC",                  /* TULIP_MEDIA_AUIBNC */
  637     "100baseTX",                /* TULIP_MEDIA_100BASET */
  638     "Full Duplex 100baseTX",    /* TULIP_MEDIA_100BASET_FD */
  639     "100baseT4",                /* TULIP_MEDIA_100BASET4 */
  640     "100baseFX",                /* TULIP_MEDIA_100BASEFX */
  641     "Full Duplex 100baseFX",    /* TULIP_MEDIA_100BASEFX_FD */
  642 };
  643 #endif
  645 static const int tulip_media_to_ifmedia[] = {
IFM_ETHER | IFM_NONE,               /* TULIP_MEDIA_UNKNOWN */
IFM_ETHER | IFM_10_T,               /* TULIP_MEDIA_10BASET */
IFM_ETHER | IFM_10_T | IFM_FDX,     /* TULIP_MEDIA_10BASET_FD */
IFM_ETHER | IFM_10_2,               /* TULIP_MEDIA_BNC */
IFM_ETHER | IFM_10_5,               /* TULIP_MEDIA_AUI */
IFM_ETHER | IFM_MANUAL,             /* TULIP_MEDIA_EXTSIA */
IFM_ETHER | IFM_10_5,               /* TULIP_MEDIA_AUIBNC */
IFM_ETHER | IFM_100_TX,             /* TULIP_MEDIA_100BASET */
IFM_ETHER | IFM_100_TX | IFM_FDX,   /* TULIP_MEDIA_100BASET_FD */
IFM_ETHER | IFM_100_T4,             /* TULIP_MEDIA_100BASET4 */
IFM_ETHER | IFM_100_FX,             /* TULIP_MEDIA_100BASEFX */
IFM_ETHER | IFM_100_FX | IFM_FDX,   /* TULIP_MEDIA_100BASEFX_FD */
  658 };
  660 #ifdef TULIP_DEBUG
  661 static const char * const tulip_system_errors[] = {
  662     "parity error",
  663     "master abort",
  664     "target abort",
  665     "reserved #3",
  666     "reserved #4",
  667     "reserved #5",
  668     "reserved #6",
  669     "reserved #7",
  670 };
  672 static const char * const tulip_status_bits[] = {
NULL,
  674     "transmit process stopped",
NULL,
  676     "transmit jabber timeout",
NULL,
  679     "transmit underflow",
NULL,
  681     "receive underflow",
  683     "receive process stopped",
  684     "receive watchdog timeout",
NULL,
NULL,
  688     "link failure",
NULL,
NULL,
  691 };
  692 #endif
  694 static const struct {
tulip_srom_connection_t sc_type;
tulip_media_t sc_media;
u_int32_t sc_attrs;
  698 } tulip_srom_conninfo[] = {
  699     { TULIP_SROM_CONNTYPE_10BASET,              TULIP_MEDIA_10BASET },
  700     { TULIP_SROM_CONNTYPE_BNC,                  TULIP_MEDIA_BNC },
  701     { TULIP_SROM_CONNTYPE_AUI,                  TULIP_MEDIA_AUI },
  702     { TULIP_SROM_CONNTYPE_100BASETX,            TULIP_MEDIA_100BASETX },
  703     { TULIP_SROM_CONNTYPE_100BASET4,            TULIP_MEDIA_100BASET4 },
  704     { TULIP_SROM_CONNTYPE_100BASEFX,            TULIP_MEDIA_100BASEFX },
  705     { TULIP_SROM_CONNTYPE_MII_10BASET,          TULIP_MEDIA_10BASET,
TULIP_SROM_ATTR_MII },
  707     { TULIP_SROM_CONNTYPE_MII_100BASETX,        TULIP_MEDIA_100BASETX,
TULIP_SROM_ATTR_MII },
  709     { TULIP_SROM_CONNTYPE_MII_100BASET4,        TULIP_MEDIA_100BASET4,
TULIP_SROM_ATTR_MII },
  711     { TULIP_SROM_CONNTYPE_MII_100BASEFX,        TULIP_MEDIA_100BASEFX,
TULIP_SROM_ATTR_MII },
  713     { TULIP_SROM_CONNTYPE_10BASET_NWAY,         TULIP_MEDIA_10BASET,
TULIP_SROM_ATTR_NWAY },
  715     { TULIP_SROM_CONNTYPE_10BASET_FD,           TULIP_MEDIA_10BASET_FD },
  716     { TULIP_SROM_CONNTYPE_MII_10BASET_FD,       TULIP_MEDIA_10BASET_FD,
TULIP_SROM_ATTR_MII },
  718     { TULIP_SROM_CONNTYPE_100BASETX_FD,         TULIP_MEDIA_100BASETX_FD },
  719     { TULIP_SROM_CONNTYPE_MII_100BASETX_FD,     TULIP_MEDIA_100BASETX_FD,
TULIP_SROM_ATTR_MII },
  721     { TULIP_SROM_CONNTYPE_10BASET_NOLINKPASS,   TULIP_MEDIA_10BASET,
TULIP_SROM_ATTR_NOLINKPASS },
  723     { TULIP_SROM_CONNTYPE_AUTOSENSE,            TULIP_MEDIA_UNKNOWN,
TULIP_SROM_ATTR_AUTOSENSE },
  725     { TULIP_SROM_CONNTYPE_AUTOSENSE_POWERUP,    TULIP_MEDIA_UNKNOWN,
TULIP_SROM_ATTR_AUTOSENSE|TULIP_SROM_ATTR_POWERUP },
  727     { TULIP_SROM_CONNTYPE_AUTOSENSE_NWAY,       TULIP_MEDIA_UNKNOWN,
TULIP_SROM_ATTR_AUTOSENSE|TULIP_SROM_ATTR_NWAY },
  729     { TULIP_SROM_CONNTYPE_NOT_USED,             TULIP_MEDIA_UNKNOWN }
  730 };
  731 #define TULIP_SROM_LASTCONNIDX  \
  732                 (sizeof(tulip_srom_conninfo)/sizeof(tulip_srom_conninfo[0]) - 1)
  734 static const struct {
tulip_media_t sm_type;
tulip_srom_media_t sm_srom_type;
  737 } tulip_srom_mediums[] = {
  738     {   TULIP_MEDIA_100BASEFX_FD,       TULIP_SROM_MEDIA_100BASEFX_FD   },
  739     {   TULIP_MEDIA_100BASEFX,          TULIP_SROM_MEDIA_100BASEFX      },
  740     {   TULIP_MEDIA_100BASET4,          TULIP_SROM_MEDIA_100BASET4      },
  741     {   TULIP_MEDIA_100BASETX_FD,       TULIP_SROM_MEDIA_100BASETX_FD   },
  742     {   TULIP_MEDIA_100BASETX,          TULIP_SROM_MEDIA_100BASETX      },
  743     {   TULIP_MEDIA_10BASET_FD,         TULIP_SROM_MEDIA_10BASET_FD     },
  744     {   TULIP_MEDIA_AUI,                TULIP_SROM_MEDIA_AUI            },
  745     {   TULIP_MEDIA_BNC,                TULIP_SROM_MEDIA_BNC            },
  746     {   TULIP_MEDIA_10BASET,            TULIP_SROM_MEDIA_10BASET        },
  747     {   TULIP_MEDIA_UNKNOWN                                             }
  748 };
  750 /*
  751  * This driver supports a maximum of 32 tulip boards.
  752  * This should be enough for the forseeable future.
  753  */
  754 #define TULIP_MAX_DEVICES       32
  756 #define TULIP_RXDESC_PRESYNC(sc, di, s) \
bus_dmamap_sync((sc)->tulip_dmatag, (sc)->tulip_rxdescmap, \
  758                    (caddr_t) di - (caddr_t) (sc)->tulip_rxdescs, \
  759                    (s), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE)
  760 #define TULIP_RXDESC_POSTSYNC(sc, di, s)        \
bus_dmamap_sync((sc)->tulip_dmatag, (sc)->tulip_rxdescmap, \
  762                    (caddr_t) di - (caddr_t) (sc)->tulip_rxdescs, \
  763                    (s), BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE)
  764 #define TULIP_RXMAP_PRESYNC(sc, map) \
bus_dmamap_sync((sc)->tulip_dmatag, (map), 0, (map)->dm_mapsize, \
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE)
  767 #define TULIP_RXMAP_POSTSYNC(sc, map) \
bus_dmamap_sync((sc)->tulip_dmatag, (map), 0, (map)->dm_mapsize, \
BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE)
  770 #define TULIP_RXMAP_CREATE(sc, mapp) \
bus_dmamap_create((sc)->tulip_dmatag, TULIP_RX_BUFLEN, 2, \
TULIP_DATA_PER_DESC, 0, \
BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW, (mapp))
  775 #define TULIP_TXDESC_PRESYNC(sc, di, s) \
bus_dmamap_sync((sc)->tulip_dmatag, (sc)->tulip_txdescmap, \
  777                         (caddr_t) di - (caddr_t) (sc)->tulip_txdescs, \
  778                         (s), BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE)
  779 #define TULIP_TXDESC_POSTSYNC(sc, di, s)        \
bus_dmamap_sync((sc)->tulip_dmatag, (sc)->tulip_txdescmap, \
  781                         (caddr_t) di - (caddr_t) (sc)->tulip_txdescs, \
  782                         (s), BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE)
  783 #define TULIP_TXMAP_PRESYNC(sc, map) \
bus_dmamap_sync((sc)->tulip_dmatag, (map), 0, (map)->dm_mapsize, \
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE)
  786 #define TULIP_TXMAP_POSTSYNC(sc, map) \
bus_dmamap_sync((sc)->tulip_dmatag, (map), 0, (map)->dm_mapsize, \
BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE)
  789 #define TULIP_TXMAP_CREATE(sc, mapp) \
bus_dmamap_create((sc)->tulip_dmatag, TULIP_DATA_PER_DESC, \
TULIP_MAX_TXSEG, TULIP_DATA_PER_DESC, \
  792                           0, BUS_DMA_NOWAIT, (mapp))
  794 extern struct cfattach de_ca;
  795 extern struct cfdriver de_cd;
  796 #define TULIP_UNIT_TO_SOFTC(unit)       ((tulip_softc_t *) de_cd.cd_devs[unit])
  797 #define TULIP_IFP_TO_SOFTC(ifp)         ((tulip_softc_t *)((ifp)->if_softc))
  798 #define tulip_unit                      tulip_dev.dv_unit
  799 #define tulip_xname                     tulip_dev.dv_cfdata->cf_driver->cd_name
  801 #define TULIP_PRINTF_FMT                "%s%d"
  802 #define TULIP_PRINTF_ARGS               sc->tulip_xname, sc->tulip_unit
  804 #define TULIP_BURSTSIZE(unit)           3
  806 #define tulip_if        tulip_ac.ac_if
  807 #define tulip_name      tulip_if.if_name
  808 #define tulip_enaddr    tulip_ac.ac_enaddr
  809 #define tulip_multicnt  tulip_ac.ac_multicnt
  811 #define tulip_bpf       tulip_if.if_bpf
  813 #define tulip_intrfunc_t        int
  815 #if defined(TULIP_PERFSTATS)
  816 #define TULIP_PERFMERGE(sc, member) \
  817         do { (sc)->tulip_perfstats[TULIP_PERF_TOTAL].member \
  818              += (sc)->tulip_perfstats[TULIP_PERF_CURRENT].member; \
  819          (sc)->tulip_perfstats[TULIP_PERF_PREVIOUS].member \
  820               = (sc)->tulip_perfstats[TULIP_PERF_CURRENT].member; \
  821             (sc)->tulip_perfstats[TULIP_PERF_CURRENT].member = 0; } while (0)
  822 #define TULIP_PERFSTART(name) const tulip_cycle_t perfstart_ ## name = TULIP_PERFREAD();
  823 #define TULIP_PERFEND(name)     do { \
  824             (sc)->tulip_curperfstats.perf_ ## name ## _cycles += TULIP_PERFDIFF(perfstart_ ## name, TULIP_PERFREAD()); \
  825             (sc)->tulip_curperfstats.perf_ ## name++; \
  826         } while (0)
  827 #if defined(__i386__)
  828 typedef u_quad_t tulip_cycle_t;
  829 static __inline__ tulip_cycle_t
TULIP_PERFREAD(
  831     void)
  832 {
tulip_cycle_t x;
  834     __asm__ volatile (".byte 0x0f, 0x31" : "=A" (x));
  835     return x;
  836 }
  837 #define TULIP_PERFDIFF(s, f)    ((f) - (s))
  838 #elif defined(__alpha__)
  839 typedef unsigned long tulip_cycle_t;
  840 static __inline__ tulip_cycle_t
TULIP_PERFREAD(
  842     void)
  843 {
tulip_cycle_t x;
  845     __asm__ volatile ("rpcc %0" : "=r" (x));
  846     return x;
  847 }
  848 #define TULIP_PERFDIFF(s, f)    ((unsigned int) ((f) - (s)))
  849 #endif
  850 #else
  851 #define TULIP_PERFSTART(name)   
  852 #define TULIP_PERFEND(name)     do { } while (0)
  853 #define TULIP_PERFMERGE(s,n)    do { } while (0)
  854 #endif /* TULIP_PERFSTATS */
  856 #define TULIP_MAX_TXSEG         30
  858 #define TULIP_ADDREQUAL(a1, a2) \
  859         (((u_int16_t *)a1)[0] == ((u_int16_t *)a2)[0] \
  860          && ((u_int16_t *)a1)[1] == ((u_int16_t *)a2)[1] \
  861          && ((u_int16_t *)a1)[2] == ((u_int16_t *)a2)[2])
  862 #define TULIP_ADDRBRDCST(a1) \
  863         (((u_int16_t *)a1)[0] == 0xFFFFU \
  864          && ((u_int16_t *)a1)[1] == 0xFFFFU \
  865          && ((u_int16_t *)a1)[2] == 0xFFFFU)
  867 #define TULIP_GETCTX(m, t)      ((t) (m)->m_pkthdr.rcvif + 0)
  868 #define TULIP_SETCTX(m, c)      ((void) ((m)->m_pkthdr.rcvif = (void *) (c)))