The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/we.c

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    1 /*      $NetBSD: we.c,v 1.15 2008/04/28 20:23:51 martin Exp $   */
    2 
    3 /*-
    4  * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
    9  * NASA Ames Research Center.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   30  * POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 /*
   34  * Device driver for National Semiconductor DS8390/WD83C690 based ethernet
   35  * adapters.
   36  *
   37  * Copyright (c) 1994, 1995 Charles M. Hannum.  All rights reserved.
   38  *
   39  * Copyright (C) 1993, David Greenman.  This software may be used, modified,
   40  * copied, distributed, and sold, in both source and binary form provided that
   41  * the above copyright and these terms are retained.  Under no circumstances is
   42  * the author responsible for the proper functioning of this software, nor does
   43  * the author assume any responsibility for damages incurred with its use.
   44  */
   45 
   46 /*
   47  * Device driver for the Western Digital/SMC 8003 and 8013 series,
   48  * and the SMC Elite Ultra (8216).
   49  */
   50 
   51 #include <sys/cdefs.h>
   52 __KERNEL_RCSID(0, "$NetBSD: we.c,v 1.15 2008/04/28 20:23:51 martin Exp $");
   53 
   54 #include <sys/param.h>
   55 #include <sys/systm.h>
   56 #include <sys/device.h>
   57 #include <sys/socket.h>
   58 #include <sys/mbuf.h>
   59 #include <sys/syslog.h>
   60 
   61 #include <net/if.h>
   62 #include <net/if_dl.h>
   63 #include <net/if_types.h>
   64 #include <net/if_media.h>
   65 
   66 #include <net/if_ether.h>
   67 
   68 #include <sys/bus.h>
   69 #include <sys/bswap.h>
   70 #include <sys/intr.h>
   71 
   72 #include <dev/isa/isareg.h>
   73 #include <dev/isa/isavar.h>
   74 
   75 #include <dev/ic/dp8390reg.h>
   76 #include <dev/ic/dp8390var.h>
   77 #include <dev/ic/wereg.h>
   78 #include <dev/ic/wevar.h>
   79 
   80 #ifndef __BUS_SPACE_HAS_STREAM_METHODS
   81 #define bus_space_read_region_stream_2  bus_space_read_region_2
   82 #define bus_space_write_stream_2        bus_space_write_2
   83 #define bus_space_write_region_stream_2 bus_space_write_region_2
   84 #endif
   85 
   86 static void     we_set_media(struct we_softc *, int);
   87 
   88 static void     we_media_init(struct dp8390_softc *);
   89 
   90 static int      we_mediachange(struct dp8390_softc *);
   91 static void     we_mediastatus(struct dp8390_softc *, struct ifmediareq *);
   92 
   93 static void     we_recv_int(struct dp8390_softc *);
   94 static void     we_init_card(struct dp8390_softc *);
   95 static int      we_write_mbuf(struct dp8390_softc *, struct mbuf *, int);
   96 static int      we_ring_copy(struct dp8390_softc *, int, void *, u_short);
   97 static void     we_read_hdr(struct dp8390_softc *, int, struct dp8390_ring *);
   98 static int      we_test_mem(struct dp8390_softc *);
   99 
  100 static inline void we_readmem(struct we_softc *, int, u_int8_t *, int);
  101 
  102 /*
  103  * Delay needed when switching 16-bit access to shared memory.
  104  */
  105 #define WE_DELAY(wsc) delay(3)
  106 
  107 /*
  108  * Enable card RAM, and 16-bit access.
  109  */
  110 #define WE_MEM_ENABLE(wsc) \
  111 if (((wsc)->sc_flags & WE_16BIT_NOTOGGLE) == 0) {                       \
  112         if ((wsc)->sc_flags & WE_16BIT_ENABLE)                          \
  113                 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich,     \
  114                     WE_LAAR, (wsc)->sc_laar_proto | WE_LAAR_M16EN);     \
  115         bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich,             \
  116             WE_MSR, wsc->sc_msr_proto | WE_MSR_MENB);                   \
  117         WE_DELAY((wsc));                                                \
  118 }
  119 
  120 /*
  121  * Disable card RAM, and 16-bit access.
  122  */
  123 #define WE_MEM_DISABLE(wsc) \
  124 if (((wsc)->sc_flags & WE_16BIT_NOTOGGLE) == 0) {                       \
  125         bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich,             \
  126             WE_MSR, (wsc)->sc_msr_proto);                               \
  127         if ((wsc)->sc_flags & WE_16BIT_ENABLE)                          \
  128                 bus_space_write_1((wsc)->sc_asict, (wsc)->sc_asich,     \
  129                     WE_LAAR, (wsc)->sc_laar_proto);                     \
  130         WE_DELAY((wsc));                                                \
  131 }
  132 
  133 int
  134 we_config(device_t self, struct we_softc *wsc, const char *typestr)
  135 {
  136         struct dp8390_softc *sc = &wsc->sc_dp8390;
  137         u_int8_t x;
  138         int i, forced_16bit = 0;
  139 
  140         /*
  141          * Allow user to override 16-bit mode.  8-bit takes precedence.
  142          */
  143         if (device_cfdata(self)->cf_flags & DP8390_FORCE_16BIT_MODE) {
  144                 wsc->sc_flags |= WE_16BIT_ENABLE;
  145                 forced_16bit = 1;
  146         }
  147         if (device_cfdata(self)->cf_flags & DP8390_FORCE_8BIT_MODE)
  148                 wsc->sc_flags &= ~WE_16BIT_ENABLE;
  149 
  150         /* Registers are linear. */
  151         for (i = 0; i < 16; i++)
  152                 sc->sc_reg_map[i] = i;
  153 
  154         /* Now we can use the NIC_{GET,PUT}() macros. */
  155 
  156         aprint_normal_dev(self, "%s Ethernet (%s-bit)\n",
  157             typestr, wsc->sc_flags & WE_16BIT_ENABLE ? "16" : "8");
  158 
  159         /* Get station address from EEPROM. */
  160         for (i = 0; i < ETHER_ADDR_LEN; i++)
  161                 sc->sc_enaddr[i] = bus_space_read_1(wsc->sc_asict,
  162                                         wsc->sc_asich, WE_PROM + i);
  163 
  164         /*
  165          * Set upper address bits and 8/16 bit access to shared memory.
  166          */
  167         if (sc->is790) {
  168                 wsc->sc_laar_proto =
  169                     bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR) &
  170                     ~WE_LAAR_M16EN;
  171                 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR,
  172                     wsc->sc_laar_proto | (wsc->sc_flags & WE_16BIT_ENABLE ? WE_LAAR_M16EN : 0));
  173         } else if ((wsc->sc_type & WE_SOFTCONFIG) ||
  174 #ifdef TOSH_ETHER
  175             (wsc->sc_type == WE_TYPE_TOSHIBA1) ||
  176             (wsc->sc_type == WE_TYPE_TOSHIBA4) ||
  177 #endif
  178             (forced_16bit) ||
  179             (wsc->sc_type == WE_TYPE_WD8013EBT)) {
  180                 wsc->sc_laar_proto = (wsc->sc_maddr >> 19) & WE_LAAR_ADDRHI;
  181                 if (wsc->sc_flags & WE_16BIT_ENABLE)
  182                         wsc->sc_laar_proto |= WE_LAAR_L16EN;
  183                 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_LAAR,
  184                     wsc->sc_laar_proto | (wsc->sc_flags & WE_16BIT_ENABLE ? WE_LAAR_M16EN : 0));
  185         }
  186 
  187         /*
  188          * Set address and enable interface shared memory.
  189          */
  190         if (sc->is790) {
  191                 /* XXX MAGIC CONSTANTS XXX */
  192                 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, 0x04);
  193                 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x04, x | 0x80);
  194                 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x0b,
  195                     ((wsc->sc_maddr >> 13) & 0x0f) |
  196                     ((wsc->sc_maddr >> 11) & 0x40) |
  197                     (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, 0x0b) & 0xb0));
  198                 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, 0x04, x);
  199                 wsc->sc_msr_proto = 0x00;
  200                 sc->cr_proto = 0x00;
  201         } else {
  202 #ifdef TOSH_ETHER
  203                 if (wsc->sc_type == WE_TYPE_TOSHIBA1 ||
  204                     wsc->sc_type == WE_TYPE_TOSHIBA4) {
  205                         bus_space_write_1(wsc->sc_asict, wsc->sc_asich,
  206                             WE_MSR + 1,
  207                             ((wsc->sc_maddr >> 8) & 0xe0) | 0x04);
  208                         bus_space_write_1(wsc->sc_asict, wsc->sc_asich,
  209                             WE_MSR + 2,
  210                             ((wsc->sc_maddr >> 16) & 0x0f));
  211                         wsc->sc_msr_proto = WE_MSR_POW;
  212                 } else
  213 #endif
  214                         wsc->sc_msr_proto = (wsc->sc_maddr >> 13) &
  215                             WE_MSR_ADDR;
  216 
  217                 sc->cr_proto = ED_CR_RD2;
  218         }
  219 
  220         bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_MSR,
  221             wsc->sc_msr_proto | WE_MSR_MENB);
  222         WE_DELAY(wsc);
  223 
  224         /*
  225          * DCR gets:
  226          *
  227          *      FIFO threshold to 8, No auto-init Remote DMA,
  228          *      byte order=80x86.
  229          *
  230          * 16-bit cards also get word-wide DMA transfers.
  231          */
  232         sc->dcr_reg = ED_DCR_FT1 | ED_DCR_LS |
  233             (wsc->sc_flags & WE_16BIT_ENABLE ? ED_DCR_WTS : 0);
  234 
  235         sc->test_mem = we_test_mem;
  236         sc->ring_copy = we_ring_copy;
  237         sc->write_mbuf = we_write_mbuf;
  238         sc->read_hdr = we_read_hdr;
  239         sc->recv_int = we_recv_int;
  240         sc->init_card = we_init_card;
  241 
  242         sc->sc_mediachange = we_mediachange;
  243         sc->sc_mediastatus = we_mediastatus;
  244 
  245         sc->mem_start = 0;
  246         /* sc->mem_size has to be set by frontend */
  247 
  248         sc->sc_flags = device_cfdata(self)->cf_flags;
  249 
  250         /* Do generic parts of attach. */
  251         if (wsc->sc_type & WE_SOFTCONFIG)
  252                 sc->sc_media_init = we_media_init;
  253         else
  254                 sc->sc_media_init = dp8390_media_init;
  255         if (dp8390_config(sc)) {
  256                 aprint_error_dev(self, "configuration failed\n");
  257                 return (1);
  258         }
  259 
  260         /*
  261          * Disable 16-bit access to shared memory - we leave it disabled
  262          * so that:
  263          *
  264          *      (1) machines reboot properly when the board is set to
  265          *          16-bit mode and there are conflicting 8-bit devices
  266          *          within the same 128k address space as this board's
  267          *          shared memory, and
  268          *
  269          *      (2) so that other 8-bit devices with shared memory
  270          *          in this same 128k address space will work.
  271          */
  272         WE_MEM_DISABLE(wsc);
  273 
  274         return (0);
  275 }
  276 
  277 static int
  278 we_test_mem(struct dp8390_softc *sc)
  279 {
  280         struct we_softc *wsc = (struct we_softc *)sc;
  281         bus_space_tag_t memt = sc->sc_buft;
  282         bus_space_handle_t memh = sc->sc_bufh;
  283         bus_size_t memsize = sc->mem_size;
  284         int i;
  285 
  286         if (wsc->sc_flags & WE_16BIT_ENABLE)
  287                 bus_space_set_region_2(memt, memh, 0, 0, memsize >> 1);
  288         else
  289                 bus_space_set_region_1(memt, memh, 0, 0, memsize);
  290 
  291         if (wsc->sc_flags & WE_16BIT_ENABLE) {
  292                 for (i = 0; i < memsize; i += 2) {
  293                         if (bus_space_read_2(memt, memh, i) != 0)
  294                                 goto fail;
  295                 }
  296         } else {
  297                 for (i = 0; i < memsize; i++) {
  298                         if (bus_space_read_1(memt, memh, i) != 0)
  299                                 goto fail;
  300                 }
  301         }
  302 
  303         return (0);
  304 
  305  fail:
  306         aprint_error_dev(sc->sc_dev,
  307             "failed to clear shared memory at offset 0x%x\n", i);
  308         WE_MEM_DISABLE(wsc);
  309         return (1);
  310 }
  311 
  312 /*
  313  * Given a NIC memory source address and a host memory destination address,
  314  * copy 'len' from NIC to host using shared memory.  The 'len' is rounded
  315  * up to a word - ok as long as mbufs are word-sized.
  316  */
  317 static inline void
  318 we_readmem(struct we_softc *wsc, int from, u_int8_t *to, int len)
  319 {
  320         bus_space_tag_t memt = wsc->sc_dp8390.sc_buft;
  321         bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh;
  322 
  323         if (len & 1)
  324                 ++len;
  325 
  326         if (wsc->sc_flags & WE_16BIT_ENABLE)
  327                 bus_space_read_region_stream_2(memt, memh, from,
  328                     (u_int16_t *)to, len >> 1);
  329         else
  330                 bus_space_read_region_1(memt, memh, from,
  331                     to, len);
  332 }
  333 
  334 static int
  335 we_write_mbuf(struct dp8390_softc *sc, struct mbuf *m, int buf)
  336 {
  337         struct we_softc *wsc = (struct we_softc *)sc;
  338         bus_space_tag_t memt = wsc->sc_dp8390.sc_buft;
  339         bus_space_handle_t memh = wsc->sc_dp8390.sc_bufh;
  340         u_int8_t *data, savebyte[2];
  341         int savelen, len, leftover;
  342 #ifdef DIAGNOSTIC
  343         u_int8_t *lim;
  344 #endif
  345 
  346         savelen = m->m_pkthdr.len;
  347 
  348         WE_MEM_ENABLE(wsc);
  349 
  350         /*
  351          * 8-bit boards are simple; no alignment tricks are necessary.
  352          */
  353         if ((wsc->sc_flags & WE_16BIT_ENABLE) == 0) {
  354                 for (; m != NULL; buf += m->m_len, m = m->m_next)
  355                         bus_space_write_region_1(memt, memh,
  356                             buf, mtod(m, u_int8_t *), m->m_len);
  357                 if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) {
  358                         bus_space_set_region_1(memt, memh,
  359                             buf, 0, ETHER_MIN_LEN - ETHER_CRC_LEN - savelen);
  360                         savelen = ETHER_MIN_LEN - ETHER_CRC_LEN;
  361                 }
  362                 goto out;
  363         }
  364 
  365         /* Start out with no leftover data. */
  366         leftover = 0;
  367         savebyte[0] = savebyte[1] = 0;
  368 
  369         for (; m != NULL; m = m->m_next) {
  370                 len = m->m_len;
  371                 if (len == 0)
  372                         continue;
  373                 data = mtod(m, u_int8_t *);
  374 #ifdef DIAGNOSTIC
  375                 lim = data + len;
  376 #endif
  377                 while (len > 0) {
  378                         if (leftover) {
  379                                 /*
  380                                  * Data left over (from mbuf or realignment).
  381                                  * Buffer the next byte, and write it and
  382                                  * the leftover data out.
  383                                  */
  384                                 savebyte[1] = *data++;
  385                                 len--;
  386                                 bus_space_write_stream_2(memt, memh, buf,
  387                                     *(u_int16_t *)savebyte);
  388                                 buf += 2;
  389                                 leftover = 0;
  390                         } else if (BUS_SPACE_ALIGNED_POINTER(data, u_int16_t)
  391                                    == 0) {
  392                                 /*
  393                                  * Unaligned dta; buffer the next byte.
  394                                  */
  395                                 savebyte[0] = *data++;
  396                                 len--;
  397                                 leftover = 1;
  398                         } else {
  399                                 /*
  400                                  * Aligned data; output contiguous words as
  401                                  * much as we can, then buffer the remaining
  402                                  * byte, if any.
  403                                  */
  404                                 leftover = len & 1;
  405                                 len &= ~1;
  406                                 bus_space_write_region_stream_2(memt, memh,
  407                                     buf, (u_int16_t *)data, len >> 1);
  408                                 data += len;
  409                                 buf += len;
  410                                 if (leftover)
  411                                         savebyte[0] = *data++;
  412                                 len = 0;
  413                         }
  414                 }
  415                 if (len < 0)
  416                         panic("we_write_mbuf: negative len");
  417 #ifdef DIAGNOSTIC
  418                 if (data != lim)
  419                         panic("we_write_mbuf: data != lim");
  420 #endif
  421         }
  422         if (leftover) {
  423                 savebyte[1] = 0;
  424                 bus_space_write_stream_2(memt, memh, buf,
  425                     *(u_int16_t *)savebyte);
  426                 buf += 2;
  427         }
  428         if (savelen < ETHER_MIN_LEN - ETHER_CRC_LEN) {
  429                 bus_space_set_region_2(memt, memh,
  430                     buf, 0, (ETHER_MIN_LEN - ETHER_CRC_LEN - savelen) >> 1);
  431                 savelen = ETHER_MIN_LEN - ETHER_CRC_LEN;
  432         }
  433 
  434  out:
  435         WE_MEM_DISABLE(wsc);
  436 
  437         return (savelen);
  438 }
  439 
  440 static int
  441 we_ring_copy(struct dp8390_softc *sc, int src, void *dstv, u_short amount)
  442 {
  443         char *dst = dstv;
  444         struct we_softc *wsc = (struct we_softc *)sc;
  445         u_short tmp_amount;
  446 
  447         /* Does copy wrap to lower addr in ring buffer? */
  448         if (src + amount > sc->mem_end) {
  449                 tmp_amount = sc->mem_end - src;
  450 
  451                 /* Copy amount up to end of NIC memory. */
  452                 we_readmem(wsc, src, dst, tmp_amount);
  453 
  454                 amount -= tmp_amount;
  455                 src = sc->mem_ring;
  456                 dst += tmp_amount;
  457         }
  458 
  459         we_readmem(wsc, src, dst, amount);
  460 
  461         return (src + amount);
  462 }
  463 
  464 static void
  465 we_read_hdr(struct dp8390_softc *sc, int packet_ptr,
  466     struct dp8390_ring *packet_hdrp)
  467 {
  468         struct we_softc *wsc = (struct we_softc *)sc;
  469 
  470         we_readmem(wsc, packet_ptr, (u_int8_t *)packet_hdrp,
  471             sizeof(struct dp8390_ring));
  472 #if BYTE_ORDER == BIG_ENDIAN
  473         packet_hdrp->count = bswap16(packet_hdrp->count);
  474 #endif
  475 }
  476 
  477 static void
  478 we_recv_int(struct dp8390_softc *sc)
  479 {
  480         struct we_softc *wsc = (struct we_softc *)sc;
  481 
  482         WE_MEM_ENABLE(wsc);
  483         dp8390_rint(sc);
  484         WE_MEM_DISABLE(wsc);
  485 }
  486 
  487 static void
  488 we_media_init(struct dp8390_softc *sc)
  489 {
  490         struct we_softc *wsc = (void *) sc;
  491         int defmedia = IFM_ETHER;
  492         u_int8_t x;
  493 
  494         if (sc->is790) {
  495                 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR);
  496                 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR,
  497                     x | WE790_HWR_SWH);
  498                 if (bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE790_GCR) &
  499                     WE790_GCR_GPOUT)
  500                         defmedia |= IFM_10_2;
  501                 else
  502                         defmedia |= IFM_10_5;
  503                 bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE790_HWR,
  504                     x & ~WE790_HWR_SWH);
  505         } else {
  506                 x = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR);
  507                 if (x & WE_IRR_OUT2)
  508                         defmedia |= IFM_10_2;
  509                 else
  510                         defmedia |= IFM_10_5;
  511         }
  512 
  513         ifmedia_init(&sc->sc_media, 0, dp8390_mediachange, dp8390_mediastatus);
  514         ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_2, 0, NULL);
  515         ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_10_5, 0, NULL);
  516         ifmedia_set(&sc->sc_media, defmedia);
  517 }
  518 
  519 static int
  520 we_mediachange(struct dp8390_softc *sc)
  521 {
  522 
  523         /*
  524          * Current media is already set up.  Just reset the interface
  525          * to let the new value take hold.  The new media will be
  526          * set up in we_init_card() called via dp8390_init().
  527          */
  528         dp8390_reset(sc);
  529         return (0);
  530 }
  531 
  532 static void
  533 we_mediastatus(struct dp8390_softc *sc, struct ifmediareq *ifmr)
  534 {
  535         struct ifmedia *ifm = &sc->sc_media;
  536 
  537         /*
  538          * The currently selected media is always the active media.
  539          */
  540         ifmr->ifm_active = ifm->ifm_cur->ifm_media;
  541 }
  542 
  543 static void
  544 we_init_card(struct dp8390_softc *sc)
  545 {
  546         struct we_softc *wsc = (struct we_softc *)sc;
  547         struct ifmedia *ifm = &sc->sc_media;
  548 
  549         if (wsc->sc_init_hook)
  550                 (*wsc->sc_init_hook)(wsc);
  551 
  552         we_set_media(wsc, ifm->ifm_cur->ifm_media);
  553 }
  554 
  555 static void
  556 we_set_media(struct we_softc *wsc, int media)
  557 {
  558         struct dp8390_softc *sc = &wsc->sc_dp8390;
  559         bus_space_tag_t asict = wsc->sc_asict;
  560         bus_space_handle_t asich = wsc->sc_asich;
  561         u_int8_t hwr, gcr, irr;
  562 
  563         if (sc->is790) {
  564                 hwr = bus_space_read_1(asict, asich, WE790_HWR);
  565                 bus_space_write_1(asict, asich, WE790_HWR,
  566                     hwr | WE790_HWR_SWH);
  567                 gcr = bus_space_read_1(asict, asich, WE790_GCR);
  568                 if (IFM_SUBTYPE(media) == IFM_10_2)
  569                         gcr |= WE790_GCR_GPOUT;
  570                 else
  571                         gcr &= ~WE790_GCR_GPOUT;
  572                 bus_space_write_1(asict, asich, WE790_GCR,
  573                     gcr | WE790_GCR_LIT);
  574                 bus_space_write_1(asict, asich, WE790_HWR,
  575                     hwr & ~WE790_HWR_SWH);
  576                 return;
  577         }
  578 
  579         irr = bus_space_read_1(wsc->sc_asict, wsc->sc_asich, WE_IRR);
  580         if (IFM_SUBTYPE(media) == IFM_10_2)
  581                 irr |= WE_IRR_OUT2;
  582         else
  583                 irr &= ~WE_IRR_OUT2;
  584         bus_space_write_1(wsc->sc_asict, wsc->sc_asich, WE_IRR, irr);
  585 }

Cache object: 7143740fb0ff273c7c303e6ddeb2a7c5


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