The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/nve/if_nve.c

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    1 /*-
    2  * Copyright (c) 2005 by David E. O'Brien <obrien@FreeBSD.org>.
    3  * Copyright (c) 2003,2004 by Quinton Dolan <q@onthenet.com.au>. 
    4  * All rights reserved.
    5  * 
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions 
    8  * are met: 
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer. 
   11  * 2. Redistributions in binary form must reproduce the above copyright 
   12  *    notice, this list of conditions and the following disclaimer in the 
   13  *    documentation and/or other materials provided with the distribution.
   14  * 
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
   16  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   18  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   19  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   22  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  * 
   27  * $Id: if_nv.c,v 1.19 2004/08/12 14:00:05 q Exp $
   28  */
   29 /*
   30  * NVIDIA nForce MCP Networking Adapter driver
   31  * 
   32  * This is a port of the NVIDIA MCP Linux ethernet driver distributed by NVIDIA
   33  * through their web site.
   34  * 
   35  * All mainstream nForce and nForce2 motherboards are supported. This module
   36  * is as stable, sometimes more stable, than the linux version. (Recent
   37  * Linux stability issues seem to be related to some issues with newer
   38  * distributions using GCC 3.x, however this don't appear to effect FreeBSD
   39  * 5.x).
   40  * 
   41  * In accordance with the NVIDIA distribution license it is necessary to
   42  * link this module against the nvlibnet.o binary object included in the
   43  * Linux driver source distribution. The binary component is not modified in
   44  * any way and is simply linked against a FreeBSD equivalent of the nvnet.c
   45  * linux kernel module "wrapper".
   46  * 
   47  * The Linux driver uses a common code API that is shared between Win32 and
   48  * i386 Linux. This abstracts the low level driver functions and uses
   49  * callbacks and hooks to access the underlying hardware device. By using
   50  * this same API in a FreeBSD kernel module it is possible to support the
   51  * hardware without breaching the Linux source distributions licensing
   52  * requirements, or obtaining the hardware programming specifications.
   53  * 
   54  * Although not conventional, it works, and given the relatively small
   55  * amount of hardware centric code, it's hopefully no more buggy than its
   56  * linux counterpart.
   57  *
   58  * NVIDIA now support the nForce3 AMD64 platform, however I have been
   59  * unable to access such a system to verify support. However, the code is
   60  * reported to work with little modification when compiled with the AMD64
   61  * version of the NVIDIA Linux library. All that should be necessary to make
   62  * the driver work is to link it directly into the kernel, instead of as a
   63  * module, and apply the docs/amd64.diff patch in this source distribution to
   64  * the NVIDIA Linux driver source.
   65  *
   66  * This driver should work on all versions of FreeBSD since 4.9/5.1 as well
   67  * as recent versions of DragonFly.
   68  *
   69  * Written by Quinton Dolan <q@onthenet.com.au> 
   70  * Portions based on existing FreeBSD network drivers. 
   71  * NVIDIA API usage derived from distributed NVIDIA NVNET driver source files.
   72  */
   73 
   74 #include <sys/cdefs.h>
   75 __FBSDID("$FreeBSD: releng/6.2/sys/dev/nve/if_nve.c 162279 2006-09-13 15:15:57Z jhb $");
   76 
   77 #include <sys/param.h>
   78 #include <sys/systm.h>
   79 #include <sys/sockio.h>
   80 #include <sys/mbuf.h>
   81 #include <sys/malloc.h>
   82 #include <sys/kernel.h>
   83 #include <sys/socket.h>
   84 #include <sys/sysctl.h>
   85 #include <sys/queue.h>
   86 #include <sys/module.h>
   87 
   88 #include <net/if.h>
   89 #include <net/if_arp.h>
   90 #include <net/ethernet.h>
   91 #include <net/if_dl.h>
   92 #include <net/if_media.h>
   93 #include <net/if_types.h>
   94 #include <net/bpf.h>
   95 #include <net/if_vlan_var.h>
   96 
   97 #include <machine/bus.h>
   98 #include <machine/resource.h>
   99 
  100 #include <vm/vm.h>              /* for vtophys */
  101 #include <vm/pmap.h>            /* for vtophys */
  102 #include <sys/bus.h>
  103 #include <sys/rman.h>
  104 
  105 #include <dev/pci/pcireg.h>
  106 #include <dev/pci/pcivar.h>
  107 #include <dev/mii/mii.h>
  108 #include <dev/mii/miivar.h>
  109 #include "miibus_if.h"
  110 
  111 /* Include NVIDIA Linux driver header files */
  112 #include <contrib/dev/nve/nvenet_version.h>
  113 #define linux
  114 #include <contrib/dev/nve/basetype.h>
  115 #include <contrib/dev/nve/phy.h>
  116 #include "os+%DIKED-nve.h"
  117 #include <contrib/dev/nve/drvinfo.h>
  118 #include <contrib/dev/nve/adapter.h>
  119 #undef linux
  120 
  121 #include <dev/nve/if_nvereg.h>
  122 
  123 MODULE_DEPEND(nve, pci, 1, 1, 1);
  124 MODULE_DEPEND(nve, ether, 1, 1, 1);
  125 MODULE_DEPEND(nve, miibus, 1, 1, 1);
  126 
  127 static int      nve_probe(device_t);
  128 static int      nve_attach(device_t);
  129 static int      nve_detach(device_t);
  130 static void     nve_init(void *);
  131 static void     nve_init_locked(struct nve_softc *);
  132 static void     nve_stop(struct nve_softc *);
  133 static void     nve_shutdown(device_t);
  134 static int      nve_init_rings(struct nve_softc *);
  135 static void     nve_free_rings(struct nve_softc *);
  136 
  137 static void     nve_ifstart(struct ifnet *);
  138 static void     nve_ifstart_locked(struct ifnet *);
  139 static int      nve_ioctl(struct ifnet *, u_long, caddr_t);
  140 static void     nve_intr(void *);
  141 static void     nve_tick(void *);
  142 static void     nve_setmulti(struct nve_softc *);
  143 static void     nve_watchdog(struct ifnet *);
  144 static void     nve_update_stats(struct nve_softc *);
  145 
  146 static int      nve_ifmedia_upd(struct ifnet *);
  147 static void     nve_ifmedia_upd_locked(struct ifnet *);
  148 static void     nve_ifmedia_sts(struct ifnet *, struct ifmediareq *);
  149 static int      nve_miibus_readreg(device_t, int, int);
  150 static void     nve_miibus_writereg(device_t, int, int, int);
  151 
  152 static void     nve_dmamap_cb(void *, bus_dma_segment_t *, int, int);
  153 static void     nve_dmamap_tx_cb(void *, bus_dma_segment_t *, int, bus_size_t, int);
  154 
  155 static NV_SINT32 nve_osalloc(PNV_VOID, PMEMORY_BLOCK);
  156 static NV_SINT32 nve_osfree(PNV_VOID, PMEMORY_BLOCK);
  157 static NV_SINT32 nve_osallocex(PNV_VOID, PMEMORY_BLOCKEX);
  158 static NV_SINT32 nve_osfreeex(PNV_VOID, PMEMORY_BLOCKEX);
  159 static NV_SINT32 nve_osclear(PNV_VOID, PNV_VOID, NV_SINT32);
  160 static NV_SINT32 nve_osdelay(PNV_VOID, NV_UINT32);
  161 static NV_SINT32 nve_osallocrxbuf(PNV_VOID, PMEMORY_BLOCK, PNV_VOID *);
  162 static NV_SINT32 nve_osfreerxbuf(PNV_VOID, PMEMORY_BLOCK, PNV_VOID);
  163 static NV_SINT32 nve_ospackettx(PNV_VOID, PNV_VOID, NV_UINT32);
  164 static NV_SINT32 nve_ospacketrx(PNV_VOID, PNV_VOID, NV_UINT32, NV_UINT8 *, NV_UINT8);
  165 static NV_SINT32 nve_oslinkchg(PNV_VOID, NV_SINT32);
  166 static NV_SINT32 nve_osalloctimer(PNV_VOID, PNV_VOID *);
  167 static NV_SINT32 nve_osfreetimer(PNV_VOID, PNV_VOID);
  168 static NV_SINT32 nve_osinittimer(PNV_VOID, PNV_VOID, PTIMER_FUNC, PNV_VOID);
  169 static NV_SINT32 nve_ossettimer(PNV_VOID, PNV_VOID, NV_UINT32);
  170 static NV_SINT32 nve_oscanceltimer(PNV_VOID, PNV_VOID);
  171 
  172 static NV_SINT32 nve_ospreprocpkt(PNV_VOID, PNV_VOID, PNV_VOID *, NV_UINT8 *, NV_UINT8);
  173 static PNV_VOID  nve_ospreprocpktnopq(PNV_VOID, PNV_VOID);
  174 static NV_SINT32 nve_osindicatepkt(PNV_VOID, PNV_VOID *, NV_UINT32);
  175 static NV_SINT32 nve_oslockalloc(PNV_VOID, NV_SINT32, PNV_VOID *);
  176 static NV_SINT32 nve_oslockacquire(PNV_VOID, NV_SINT32, PNV_VOID);
  177 static NV_SINT32 nve_oslockrelease(PNV_VOID, NV_SINT32, PNV_VOID);
  178 static PNV_VOID  nve_osreturnbufvirt(PNV_VOID, PNV_VOID);
  179 
  180 static device_method_t nve_methods[] = {
  181         /* Device interface */
  182         DEVMETHOD(device_probe, nve_probe),
  183         DEVMETHOD(device_attach, nve_attach),
  184         DEVMETHOD(device_detach, nve_detach),
  185         DEVMETHOD(device_shutdown, nve_shutdown),
  186 
  187         /* Bus interface */
  188         DEVMETHOD(bus_print_child, bus_generic_print_child),
  189         DEVMETHOD(bus_driver_added, bus_generic_driver_added),
  190 
  191         /* MII interface */
  192         DEVMETHOD(miibus_readreg, nve_miibus_readreg),
  193         DEVMETHOD(miibus_writereg, nve_miibus_writereg),
  194 
  195         {0, 0}
  196 };
  197 
  198 static driver_t nve_driver = {
  199         "nve",
  200         nve_methods,
  201         sizeof(struct nve_softc)
  202 };
  203 
  204 static devclass_t nve_devclass;
  205 
  206 static int      nve_pollinterval = 0;
  207 SYSCTL_INT(_hw, OID_AUTO, nve_pollinterval, CTLFLAG_RW,
  208            &nve_pollinterval, 0, "delay between interface polls");
  209 
  210 DRIVER_MODULE(nve, pci, nve_driver, nve_devclass, 0, 0);
  211 DRIVER_MODULE(miibus, nve, miibus_driver, miibus_devclass, 0, 0);
  212 
  213 static struct nve_type nve_devs[] = {
  214         {NVIDIA_VENDORID, NFORCE_MCPNET1_DEVICEID,
  215         "NVIDIA nForce MCP Networking Adapter"},
  216         {NVIDIA_VENDORID, NFORCE_MCPNET2_DEVICEID,
  217         "NVIDIA nForce MCP2 Networking Adapter"},
  218         {NVIDIA_VENDORID, NFORCE_MCPNET3_DEVICEID,
  219         "NVIDIA nForce MCP3 Networking Adapter"},
  220         {NVIDIA_VENDORID, NFORCE_MCPNET4_DEVICEID,
  221         "NVIDIA nForce MCP4 Networking Adapter"},
  222         {NVIDIA_VENDORID, NFORCE_MCPNET5_DEVICEID,
  223         "NVIDIA nForce MCP5 Networking Adapter"},
  224         {NVIDIA_VENDORID, NFORCE_MCPNET6_DEVICEID,
  225         "NVIDIA nForce MCP6 Networking Adapter"},
  226         {NVIDIA_VENDORID, NFORCE_MCPNET7_DEVICEID,
  227         "NVIDIA nForce MCP7 Networking Adapter"},
  228         {NVIDIA_VENDORID, NFORCE_MCPNET8_DEVICEID,
  229         "NVIDIA nForce MCP8 Networking Adapter"},
  230         {NVIDIA_VENDORID, NFORCE_MCPNET9_DEVICEID,
  231         "NVIDIA nForce MCP9 Networking Adapter"},
  232         {NVIDIA_VENDORID, NFORCE_MCPNET10_DEVICEID,
  233         "NVIDIA nForce MCP10 Networking Adapter"},
  234         {NVIDIA_VENDORID, NFORCE_MCPNET11_DEVICEID,
  235         "NVIDIA nForce MCP11 Networking Adapter"},
  236         {NVIDIA_VENDORID, NFORCE_MCPNET12_DEVICEID,
  237         "NVIDIA nForce MCP12 Networking Adapter"},
  238         {NVIDIA_VENDORID, NFORCE_MCPNET13_DEVICEID,
  239         "NVIDIA nForce MCP13 Networking Adapter"},
  240         {0, 0, NULL}
  241 };
  242 
  243 /* DMA MEM map callback function to get data segment physical address */
  244 static void
  245 nve_dmamap_cb(void *arg, bus_dma_segment_t * segs, int nsegs, int error)
  246 {
  247         if (error)
  248                 return;
  249 
  250         KASSERT(nsegs == 1,
  251             ("Too many DMA segments returned when mapping DMA memory"));
  252         *(bus_addr_t *)arg = segs->ds_addr;
  253 }
  254 
  255 /* DMA RX map callback function to get data segment physical address */
  256 static void
  257 nve_dmamap_rx_cb(void *arg, bus_dma_segment_t * segs, int nsegs,
  258     bus_size_t mapsize, int error)
  259 {
  260         if (error)
  261                 return;
  262         *(bus_addr_t *)arg = segs->ds_addr;
  263 }
  264 
  265 /*
  266  * DMA TX buffer callback function to allocate fragment data segment
  267  * addresses
  268  */
  269 static void
  270 nve_dmamap_tx_cb(void *arg, bus_dma_segment_t * segs, int nsegs, bus_size_t mapsize, int error)
  271 {
  272         struct nve_tx_desc *info;
  273 
  274         info = arg;
  275         if (error)
  276                 return;
  277         KASSERT(nsegs < NV_MAX_FRAGS,
  278             ("Too many DMA segments returned when mapping mbuf"));
  279         info->numfrags = nsegs;
  280         bcopy(segs, info->frags, nsegs * sizeof(bus_dma_segment_t));
  281 }
  282 
  283 /* Probe for supported hardware ID's */
  284 static int
  285 nve_probe(device_t dev)
  286 {
  287         struct nve_type *t;
  288 
  289         t = nve_devs;
  290         /* Check for matching PCI DEVICE ID's */
  291         while (t->name != NULL) {
  292                 if ((pci_get_vendor(dev) == t->vid_id) &&
  293                     (pci_get_device(dev) == t->dev_id)) {
  294                         device_set_desc(dev, t->name);
  295                         return (0);
  296                 }
  297                 t++;
  298         }
  299 
  300         return (ENXIO);
  301 }
  302 
  303 /* Attach driver and initialise hardware for use */
  304 static int
  305 nve_attach(device_t dev)
  306 {
  307         u_char                  eaddr[ETHER_ADDR_LEN];
  308         struct nve_softc        *sc;
  309         struct ifnet            *ifp;
  310         OS_API                  *osapi;
  311         ADAPTER_OPEN_PARAMS     OpenParams;
  312         int                     error = 0, i, rid;
  313 
  314         if (bootverbose)
  315                 device_printf(dev, "nvenetlib.o version %s\n", DRIVER_VERSION);
  316 
  317         DEBUGOUT(NVE_DEBUG_INIT, "nve: nve_attach - entry\n");
  318 
  319         sc = device_get_softc(dev);
  320 
  321         /* Allocate mutex */
  322         mtx_init(&sc->mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
  323             MTX_DEF);
  324         callout_init_mtx(&sc->stat_callout, &sc->mtx, 0);
  325 
  326         sc->dev = dev;
  327 
  328         /* Preinitialize data structures */
  329         bzero(&OpenParams, sizeof(ADAPTER_OPEN_PARAMS));
  330 
  331         /* Enable bus mastering */
  332         pci_enable_busmaster(dev);
  333 
  334         /* Allocate memory mapped address space */
  335         rid = NV_RID;
  336         sc->res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1,
  337             RF_ACTIVE);
  338 
  339         if (sc->res == NULL) {
  340                 device_printf(dev, "couldn't map memory\n");
  341                 error = ENXIO;
  342                 goto fail;
  343         }
  344         sc->sc_st = rman_get_bustag(sc->res);
  345         sc->sc_sh = rman_get_bushandle(sc->res);
  346 
  347         /* Allocate interrupt */
  348         rid = 0;
  349         sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
  350             RF_SHAREABLE | RF_ACTIVE);
  351 
  352         if (sc->irq == NULL) {
  353                 device_printf(dev, "couldn't map interrupt\n");
  354                 error = ENXIO;
  355                 goto fail;
  356         }
  357         /* Allocate DMA tags */
  358         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
  359                      BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES * NV_MAX_FRAGS,
  360                                    NV_MAX_FRAGS, MCLBYTES, 0,
  361                                    busdma_lock_mutex, &Giant,
  362                                    &sc->mtag);
  363         if (error) {
  364                 device_printf(dev, "couldn't allocate dma tag\n");
  365                 goto fail;
  366         }
  367         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
  368             BUS_SPACE_MAXADDR, NULL, NULL,
  369             sizeof(struct nve_rx_desc) * RX_RING_SIZE, 1,
  370             sizeof(struct nve_rx_desc) * RX_RING_SIZE, 0,
  371             busdma_lock_mutex, &Giant,
  372             &sc->rtag);
  373         if (error) {
  374                 device_printf(dev, "couldn't allocate dma tag\n");
  375                 goto fail;
  376         }
  377         error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT,
  378             BUS_SPACE_MAXADDR, NULL, NULL,
  379             sizeof(struct nve_tx_desc) * TX_RING_SIZE, 1,
  380             sizeof(struct nve_tx_desc) * TX_RING_SIZE, 0,
  381             busdma_lock_mutex, &Giant,
  382             &sc->ttag);
  383         if (error) {
  384                 device_printf(dev, "couldn't allocate dma tag\n");
  385                 goto fail;
  386         }
  387         /* Allocate DMA safe memory and get the DMA addresses. */
  388         error = bus_dmamem_alloc(sc->ttag, (void **)&sc->tx_desc,
  389             BUS_DMA_WAITOK, &sc->tmap);
  390         if (error) {
  391                 device_printf(dev, "couldn't allocate dma memory\n");
  392                 goto fail;
  393         }
  394         bzero(sc->tx_desc, sizeof(struct nve_tx_desc) * TX_RING_SIZE);
  395         error = bus_dmamap_load(sc->ttag, sc->tmap, sc->tx_desc,
  396                     sizeof(struct nve_tx_desc) * TX_RING_SIZE, nve_dmamap_cb,
  397                     &sc->tx_addr, 0);
  398         if (error) {
  399                 device_printf(dev, "couldn't map dma memory\n");
  400                 goto fail;
  401         }
  402         error = bus_dmamem_alloc(sc->rtag, (void **)&sc->rx_desc,
  403             BUS_DMA_WAITOK, &sc->rmap);
  404         if (error) {
  405                 device_printf(dev, "couldn't allocate dma memory\n");
  406                 goto fail;
  407         }
  408         bzero(sc->rx_desc, sizeof(struct nve_rx_desc) * RX_RING_SIZE);
  409         error = bus_dmamap_load(sc->rtag, sc->rmap, sc->rx_desc,
  410             sizeof(struct nve_rx_desc) * RX_RING_SIZE, nve_dmamap_cb,
  411             &sc->rx_addr, 0);
  412         if (error) {
  413                 device_printf(dev, "couldn't map dma memory\n");
  414                 goto fail;
  415         }
  416         /* Initialize rings. */
  417         if (nve_init_rings(sc)) {
  418                 device_printf(dev, "failed to init rings\n");
  419                 error = ENXIO;
  420                 goto fail;
  421         }
  422         /* Setup NVIDIA API callback routines */
  423         osapi                           = &sc->osapi;
  424         osapi->pOSCX                    = sc;
  425         osapi->pfnAllocMemory           = nve_osalloc;
  426         osapi->pfnFreeMemory            = nve_osfree;
  427         osapi->pfnAllocMemoryEx         = nve_osallocex;
  428         osapi->pfnFreeMemoryEx          = nve_osfreeex;
  429         osapi->pfnClearMemory           = nve_osclear;
  430         osapi->pfnStallExecution        = nve_osdelay;
  431         osapi->pfnAllocReceiveBuffer    = nve_osallocrxbuf;
  432         osapi->pfnFreeReceiveBuffer     = nve_osfreerxbuf;
  433         osapi->pfnPacketWasSent         = nve_ospackettx;
  434         osapi->pfnPacketWasReceived     = nve_ospacketrx;
  435         osapi->pfnLinkStateHasChanged   = nve_oslinkchg;
  436         osapi->pfnAllocTimer            = nve_osalloctimer;
  437         osapi->pfnFreeTimer             = nve_osfreetimer;
  438         osapi->pfnInitializeTimer       = nve_osinittimer;
  439         osapi->pfnSetTimer              = nve_ossettimer;
  440         osapi->pfnCancelTimer           = nve_oscanceltimer;
  441         osapi->pfnPreprocessPacket      = nve_ospreprocpkt;
  442         osapi->pfnPreprocessPacketNopq  = nve_ospreprocpktnopq;
  443         osapi->pfnIndicatePackets       = nve_osindicatepkt;
  444         osapi->pfnLockAlloc             = nve_oslockalloc;
  445         osapi->pfnLockAcquire           = nve_oslockacquire;
  446         osapi->pfnLockRelease           = nve_oslockrelease;
  447         osapi->pfnReturnBufferVirtual   = nve_osreturnbufvirt;
  448 
  449         sc->linkup = FALSE;
  450         sc->max_frame_size = ETHERMTU + ETHER_HDR_LEN + FCS_LEN;
  451 
  452         /* TODO - We don't support hardware offload yet */
  453         sc->hwmode = 1;
  454         sc->media = 0;
  455 
  456         /* Set NVIDIA API startup parameters */
  457         OpenParams.MaxDpcLoop = 2;
  458         OpenParams.MaxRxPkt = RX_RING_SIZE;
  459         OpenParams.MaxTxPkt = TX_RING_SIZE;
  460         OpenParams.SentPacketStatusSuccess = 1;
  461         OpenParams.SentPacketStatusFailure = 0;
  462         OpenParams.MaxRxPktToAccumulate = 6;
  463         OpenParams.ulPollInterval = nve_pollinterval;
  464         OpenParams.SetForcedModeEveryNthRxPacket = 0;
  465         OpenParams.SetForcedModeEveryNthTxPacket = 0;
  466         OpenParams.RxForcedInterrupt = 0;
  467         OpenParams.TxForcedInterrupt = 0;
  468         OpenParams.pOSApi = osapi;
  469         OpenParams.pvHardwareBaseAddress = rman_get_virtual(sc->res);
  470         OpenParams.bASFEnabled = 0;
  471         OpenParams.ulDescriptorVersion = sc->hwmode;
  472         OpenParams.ulMaxPacketSize = sc->max_frame_size;
  473         OpenParams.DeviceId = pci_get_device(dev);
  474 
  475         /* Open NVIDIA Hardware API */
  476         error = ADAPTER_Open(&OpenParams, (void **)&(sc->hwapi), &sc->phyaddr);
  477         if (error) {
  478                 device_printf(dev,
  479                     "failed to open NVIDIA Hardware API: 0x%x\n", error);
  480                 goto fail;
  481         }
  482         
  483         /* TODO - Add support for MODE2 hardware offload */ 
  484         
  485         bzero(&sc->adapterdata, sizeof(sc->adapterdata));
  486         
  487         sc->adapterdata.ulMediaIF = sc->media;
  488         sc->adapterdata.ulModeRegTxReadCompleteEnable = 1;
  489         sc->hwapi->pfnSetCommonData(sc->hwapi->pADCX, &sc->adapterdata);
  490         
  491         /* MAC is loaded backwards into h/w reg */
  492         sc->hwapi->pfnGetNodeAddress(sc->hwapi->pADCX, sc->original_mac_addr);
  493         for (i = 0; i < 6; i++) {
  494                 eaddr[i] = sc->original_mac_addr[5 - i];
  495         }
  496         sc->hwapi->pfnSetNodeAddress(sc->hwapi->pADCX, eaddr);
  497 
  498         /* Display ethernet address ,... */
  499         device_printf(dev, "Ethernet address %6D\n", eaddr, ":");
  500 
  501         /* Allocate interface structures */
  502         ifp = sc->ifp = if_alloc(IFT_ETHER);
  503         if (ifp == NULL) {
  504                 device_printf(dev, "can not if_alloc()\n");
  505                 error = ENOSPC;
  506                 goto fail;
  507         }
  508 
  509         /* Probe device for MII interface to PHY */
  510         DEBUGOUT(NVE_DEBUG_INIT, "nve: do mii_phy_probe\n");
  511         if (mii_phy_probe(dev, &sc->miibus, nve_ifmedia_upd, nve_ifmedia_sts)) {
  512                 device_printf(dev, "MII without any phy!\n");
  513                 error = ENXIO;
  514                 goto fail;
  515         }
  516 
  517         /* Setup interface parameters */
  518         ifp->if_softc = sc;
  519         if_initname(ifp, device_get_name(dev), device_get_unit(dev));
  520         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
  521         ifp->if_ioctl = nve_ioctl;
  522         ifp->if_output = ether_output;
  523         ifp->if_start = nve_ifstart;
  524         ifp->if_watchdog = nve_watchdog;
  525         ifp->if_timer = 0;
  526         ifp->if_init = nve_init;
  527         ifp->if_mtu = ETHERMTU;
  528         ifp->if_baudrate = IF_Mbps(100);
  529         IFQ_SET_MAXLEN(&ifp->if_snd, TX_RING_SIZE - 1);
  530         ifp->if_snd.ifq_drv_maxlen = TX_RING_SIZE - 1;
  531         IFQ_SET_READY(&ifp->if_snd);
  532         ifp->if_capabilities |= IFCAP_VLAN_MTU;
  533 
  534         /* Attach to OS's managers. */
  535         ether_ifattach(ifp, eaddr);
  536 
  537         /* Activate our interrupt handler. - attach last to avoid lock */
  538         error = bus_setup_intr(sc->dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
  539             nve_intr, sc, &sc->sc_ih);
  540         if (error) {
  541                 device_printf(sc->dev, "couldn't set up interrupt handler\n");
  542                 goto fail;
  543         }
  544         DEBUGOUT(NVE_DEBUG_INIT, "nve: nve_attach - exit\n");
  545 
  546 fail:
  547         if (error)
  548                 nve_detach(dev);
  549 
  550         return (error);
  551 }
  552 
  553 /* Detach interface for module unload */
  554 static int
  555 nve_detach(device_t dev)
  556 {
  557         struct nve_softc *sc = device_get_softc(dev);
  558         struct ifnet *ifp;
  559 
  560         KASSERT(mtx_initialized(&sc->mtx), ("mutex not initialized"));
  561 
  562         DEBUGOUT(NVE_DEBUG_DEINIT, "nve: nve_detach - entry\n");
  563 
  564         ifp = sc->ifp;
  565 
  566         if (device_is_attached(dev)) {
  567                 NVE_LOCK(sc);
  568                 nve_stop(sc);
  569                 NVE_UNLOCK(sc);
  570                 callout_drain(&sc->stat_callout);
  571                 ether_ifdetach(ifp);
  572         }
  573 
  574         if (sc->miibus)
  575                 device_delete_child(dev, sc->miibus);
  576         bus_generic_detach(dev);
  577 
  578         /* Reload unreversed address back into MAC in original state */
  579         if (sc->original_mac_addr)
  580                 sc->hwapi->pfnSetNodeAddress(sc->hwapi->pADCX,
  581                     sc->original_mac_addr);
  582 
  583         DEBUGOUT(NVE_DEBUG_DEINIT, "nve: do pfnClose\n");
  584         /* Detach from NVIDIA hardware API */
  585         if (sc->hwapi->pfnClose)
  586                 sc->hwapi->pfnClose(sc->hwapi->pADCX, FALSE);
  587         /* Release resources */
  588         if (sc->sc_ih)
  589                 bus_teardown_intr(sc->dev, sc->irq, sc->sc_ih);
  590         if (sc->irq)
  591                 bus_release_resource(sc->dev, SYS_RES_IRQ, 0, sc->irq);
  592         if (sc->res)
  593                 bus_release_resource(sc->dev, SYS_RES_MEMORY, NV_RID, sc->res);
  594 
  595         nve_free_rings(sc);
  596 
  597         if (sc->tx_desc) {
  598                 bus_dmamap_unload(sc->rtag, sc->rmap);
  599                 bus_dmamem_free(sc->rtag, sc->rx_desc, sc->rmap);
  600                 bus_dmamap_destroy(sc->rtag, sc->rmap);
  601         }
  602         if (sc->mtag)
  603                 bus_dma_tag_destroy(sc->mtag);
  604         if (sc->ttag)
  605                 bus_dma_tag_destroy(sc->ttag);
  606         if (sc->rtag)
  607                 bus_dma_tag_destroy(sc->rtag);
  608 
  609         if (ifp)
  610                 if_free(ifp);
  611         mtx_destroy(&sc->mtx);
  612 
  613         DEBUGOUT(NVE_DEBUG_DEINIT, "nve: nve_detach - exit\n");
  614 
  615         return (0);
  616 }
  617 
  618 /* Initialise interface and start it "RUNNING" */
  619 static void
  620 nve_init(void *xsc)
  621 {
  622         struct nve_softc *sc = xsc;
  623 
  624         NVE_LOCK(sc);
  625         nve_init_locked(sc);
  626         NVE_UNLOCK(sc);
  627 }
  628 
  629 static void
  630 nve_init_locked(struct nve_softc *sc)
  631 {
  632         struct ifnet *ifp;
  633         int error;
  634 
  635         NVE_LOCK_ASSERT(sc);
  636         DEBUGOUT(NVE_DEBUG_INIT, "nve: nve_init - entry (%d)\n", sc->linkup);
  637 
  638         ifp = sc->ifp;
  639 
  640         /* Do nothing if already running */
  641         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
  642                 return;
  643 
  644         nve_stop(sc);
  645         DEBUGOUT(NVE_DEBUG_INIT, "nve: do pfnInit\n");
  646 
  647         nve_ifmedia_upd_locked(ifp);
  648 
  649         /* Setup Hardware interface and allocate memory structures */
  650         error = sc->hwapi->pfnInit(sc->hwapi->pADCX, 
  651             0, /* force speed */ 
  652             0, /* force full duplex */
  653             0, /* force mode */
  654             0, /* force async mode */
  655             &sc->linkup);
  656 
  657         if (error) {
  658                 device_printf(sc->dev,
  659                     "failed to start NVIDIA Hardware interface\n");
  660                 return;
  661         }
  662         /* Set the MAC address */
  663         sc->hwapi->pfnSetNodeAddress(sc->hwapi->pADCX, IFP2ENADDR(sc->ifp));
  664         sc->hwapi->pfnEnableInterrupts(sc->hwapi->pADCX);
  665         sc->hwapi->pfnStart(sc->hwapi->pADCX);
  666 
  667         /* Setup multicast filter */
  668         nve_setmulti(sc);
  669 
  670         /* Update interface parameters */
  671         ifp->if_drv_flags |= IFF_DRV_RUNNING;
  672         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
  673 
  674         callout_reset(&sc->stat_callout, hz, nve_tick, sc);
  675 
  676         DEBUGOUT(NVE_DEBUG_INIT, "nve: nve_init - exit\n");
  677 
  678         return;
  679 }
  680 
  681 /* Stop interface activity ie. not "RUNNING" */
  682 static void
  683 nve_stop(struct nve_softc *sc)
  684 {
  685         struct ifnet *ifp;
  686 
  687         NVE_LOCK_ASSERT(sc);
  688 
  689         DEBUGOUT(NVE_DEBUG_RUNNING, "nve: nve_stop - entry\n");
  690 
  691         ifp = sc->ifp;
  692         ifp->if_timer = 0;
  693 
  694         /* Cancel tick timer */
  695         callout_stop(&sc->stat_callout);
  696 
  697         /* Stop hardware activity */
  698         sc->hwapi->pfnDisableInterrupts(sc->hwapi->pADCX);
  699         sc->hwapi->pfnStop(sc->hwapi->pADCX, 0);
  700 
  701         DEBUGOUT(NVE_DEBUG_DEINIT, "nve: do pfnDeinit\n");
  702         /* Shutdown interface and deallocate memory buffers */
  703         if (sc->hwapi->pfnDeinit)
  704                 sc->hwapi->pfnDeinit(sc->hwapi->pADCX, 0);
  705 
  706         sc->linkup = 0;
  707         sc->cur_rx = 0;
  708         sc->pending_rxs = 0;
  709         sc->pending_txs = 0;
  710 
  711         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
  712 
  713         DEBUGOUT(NVE_DEBUG_RUNNING, "nve: nve_stop - exit\n");
  714 
  715         return;
  716 }
  717 
  718 /* Shutdown interface for unload/reboot */
  719 static void
  720 nve_shutdown(device_t dev)
  721 {
  722         struct nve_softc *sc;
  723 
  724         DEBUGOUT(NVE_DEBUG_DEINIT, "nve: nve_shutdown\n");
  725 
  726         sc = device_get_softc(dev);
  727 
  728         /* Stop hardware activity */
  729         NVE_LOCK(sc);
  730         nve_stop(sc);
  731         NVE_UNLOCK(sc);
  732 }
  733 
  734 /* Allocate TX ring buffers */
  735 static int
  736 nve_init_rings(struct nve_softc *sc)
  737 {
  738         int error, i;
  739 
  740         DEBUGOUT(NVE_DEBUG_INIT, "nve: nve_init_rings - entry\n");
  741 
  742         sc->cur_rx = sc->cur_tx = sc->pending_rxs = sc->pending_txs = 0;
  743         /* Initialise RX ring */
  744         for (i = 0; i < RX_RING_SIZE; i++) {
  745                 struct nve_rx_desc *desc = sc->rx_desc + i;
  746                 struct nve_map_buffer *buf = &desc->buf;
  747 
  748                 buf->mbuf = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
  749                 if (buf->mbuf == NULL) {
  750                         device_printf(sc->dev, "couldn't allocate mbuf\n");
  751                         nve_free_rings(sc);
  752                         return (ENOBUFS);
  753                 }
  754                 buf->mbuf->m_len = buf->mbuf->m_pkthdr.len = MCLBYTES;
  755                 m_adj(buf->mbuf, ETHER_ALIGN);
  756 
  757                 error = bus_dmamap_create(sc->mtag, 0, &buf->map);
  758                 if (error) {
  759                         device_printf(sc->dev, "couldn't create dma map\n");
  760                         nve_free_rings(sc);
  761                         return (error);
  762                 }
  763                 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, buf->mbuf,
  764                                           nve_dmamap_rx_cb, &desc->paddr, 0);
  765                 if (error) {
  766                         device_printf(sc->dev, "couldn't dma map mbuf\n");
  767                         nve_free_rings(sc);
  768                         return (error);
  769                 }
  770                 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREREAD);
  771 
  772                 desc->buflength = buf->mbuf->m_len;
  773                 desc->vaddr = mtod(buf->mbuf, caddr_t);
  774         }
  775         bus_dmamap_sync(sc->rtag, sc->rmap,
  776             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
  777 
  778         /* Initialize TX ring */
  779         for (i = 0; i < TX_RING_SIZE; i++) {
  780                 struct nve_tx_desc *desc = sc->tx_desc + i;
  781                 struct nve_map_buffer *buf = &desc->buf;
  782 
  783                 buf->mbuf = NULL;
  784 
  785                 error = bus_dmamap_create(sc->mtag, 0, &buf->map);
  786                 if (error) {
  787                         device_printf(sc->dev, "couldn't create dma map\n");
  788                         nve_free_rings(sc);
  789                         return (error);
  790                 }
  791         }
  792         bus_dmamap_sync(sc->ttag, sc->tmap,
  793             BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
  794 
  795         DEBUGOUT(NVE_DEBUG_INIT, "nve: nve_init_rings - exit\n");
  796 
  797         return (error);
  798 }
  799 
  800 /* Free the TX ring buffers */
  801 static void
  802 nve_free_rings(struct nve_softc *sc)
  803 {
  804         int i;
  805 
  806         DEBUGOUT(NVE_DEBUG_DEINIT, "nve: nve_free_rings - entry\n");
  807 
  808         for (i = 0; i < RX_RING_SIZE; i++) {
  809                 struct nve_rx_desc *desc = sc->rx_desc + i;
  810                 struct nve_map_buffer *buf = &desc->buf;
  811 
  812                 if (buf->mbuf) {
  813                         bus_dmamap_unload(sc->mtag, buf->map);
  814                         bus_dmamap_destroy(sc->mtag, buf->map);
  815                         m_freem(buf->mbuf);
  816                 }
  817                 buf->mbuf = NULL;
  818         }
  819 
  820         for (i = 0; i < TX_RING_SIZE; i++) {
  821                 struct nve_tx_desc *desc = sc->tx_desc + i;
  822                 struct nve_map_buffer *buf = &desc->buf;
  823 
  824                 if (buf->mbuf) {
  825                         bus_dmamap_unload(sc->mtag, buf->map);
  826                         bus_dmamap_destroy(sc->mtag, buf->map);
  827                         m_freem(buf->mbuf);
  828                 }
  829                 buf->mbuf = NULL;
  830         }
  831 
  832         DEBUGOUT(NVE_DEBUG_DEINIT, "nve: nve_free_rings - exit\n");
  833 }
  834 
  835 /* Main loop for sending packets from OS to interface */
  836 static void
  837 nve_ifstart(struct ifnet *ifp)
  838 {
  839         struct nve_softc *sc = ifp->if_softc;
  840 
  841         NVE_LOCK(sc);
  842         nve_ifstart_locked(ifp);
  843         NVE_UNLOCK(sc);
  844 }
  845 
  846 static void
  847 nve_ifstart_locked(struct ifnet *ifp)
  848 {
  849         struct nve_softc *sc = ifp->if_softc;
  850         struct nve_map_buffer *buf;
  851         struct mbuf    *m0, *m;
  852         struct nve_tx_desc *desc;
  853         ADAPTER_WRITE_DATA txdata;
  854         int error, i;
  855 
  856         DEBUGOUT(NVE_DEBUG_RUNNING, "nve: nve_ifstart - entry\n");
  857 
  858         NVE_LOCK_ASSERT(sc);
  859 
  860         /* If link is down/busy or queue is empty do nothing */
  861         if (ifp->if_drv_flags & IFF_DRV_OACTIVE ||
  862             IFQ_DRV_IS_EMPTY(&ifp->if_snd))
  863                 return;
  864 
  865         /* Transmit queued packets until sent or TX ring is full */
  866         while (sc->pending_txs < TX_RING_SIZE) {
  867                 desc = sc->tx_desc + sc->cur_tx;
  868                 buf = &desc->buf;
  869 
  870                 /* Get next packet to send. */
  871                 IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
  872 
  873                 /* If nothing to send, return. */
  874                 if (m0 == NULL)
  875                         return;
  876 
  877                 /*
  878                  * On nForce4, the chip doesn't interrupt on transmit,
  879                  * so try to flush transmitted packets from the queue
  880                  * if it's getting large (see note in nve_watchdog).
  881                  */
  882                 if (sc->pending_txs > TX_RING_SIZE/2) {
  883                         sc->hwapi->pfnDisableInterrupts(sc->hwapi->pADCX);
  884                         sc->hwapi->pfnHandleInterrupt(sc->hwapi->pADCX);
  885                         sc->hwapi->pfnEnableInterrupts(sc->hwapi->pADCX);
  886                 }
  887 
  888                 /* Map MBUF for DMA access */
  889                 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m0,
  890                     nve_dmamap_tx_cb, desc, BUS_DMA_NOWAIT);
  891 
  892                 if (error && error != EFBIG) {
  893                         m_freem(m0);
  894                         sc->tx_errors++;
  895                         continue;
  896                 }
  897                 /*
  898                  * Packet has too many fragments - defrag into new mbuf
  899                  * cluster
  900                  */
  901                 if (error) {
  902                         m = m_defrag(m0, M_DONTWAIT);
  903                         if (m == NULL) {
  904                                 m_freem(m0);
  905                                 sc->tx_errors++;
  906                                 continue;
  907                         }
  908                         m0 = m;
  909 
  910                         error = bus_dmamap_load_mbuf(sc->mtag, buf->map, m,
  911                             nve_dmamap_tx_cb, desc, BUS_DMA_NOWAIT);
  912                         if (error) {
  913                                 m_freem(m);
  914                                 sc->tx_errors++;
  915                                 continue;
  916                         }
  917                 }
  918                 /* Do sync on DMA bounce buffer */
  919                 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREWRITE);
  920 
  921                 buf->mbuf = m0;
  922                 txdata.ulNumberOfElements = desc->numfrags;
  923                 txdata.pvID = (PVOID)desc;
  924 
  925                 /* Put fragments into API element list */
  926                 txdata.ulTotalLength = buf->mbuf->m_len;
  927                 for (i = 0; i < desc->numfrags; i++) {
  928                         txdata.sElement[i].ulLength =
  929                             (ulong)desc->frags[i].ds_len;
  930                         txdata.sElement[i].pPhysical =
  931                             (PVOID)desc->frags[i].ds_addr;
  932                 }
  933 
  934                 /* Send packet to Nvidia API for transmission */
  935                 error = sc->hwapi->pfnWrite(sc->hwapi->pADCX, &txdata);
  936 
  937                 switch (error) {
  938                 case ADAPTERERR_NONE:
  939                         /* Packet was queued in API TX queue successfully */
  940                         sc->pending_txs++;
  941                         sc->cur_tx = (sc->cur_tx + 1) % TX_RING_SIZE;
  942                         break;
  943 
  944                 case ADAPTERERR_TRANSMIT_QUEUE_FULL:
  945                         /* The API TX queue is full - requeue the packet */
  946                         device_printf(sc->dev,
  947                             "nve_ifstart: transmit queue is full\n");
  948                         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
  949                         bus_dmamap_unload(sc->mtag, buf->map);
  950                         IFQ_DRV_PREPEND(&ifp->if_snd, buf->mbuf);
  951                         buf->mbuf = NULL;
  952                         return;
  953 
  954                 default:
  955                         /* The API failed to queue/send the packet so dump it */
  956                         device_printf(sc->dev, "nve_ifstart: transmit error\n");
  957                         bus_dmamap_unload(sc->mtag, buf->map);
  958                         m_freem(buf->mbuf);
  959                         buf->mbuf = NULL;
  960                         sc->tx_errors++;
  961                         return;
  962                 }
  963                 /* Set watchdog timer. */
  964                 ifp->if_timer = 8;
  965 
  966                 /* Copy packet to BPF tap */
  967                 BPF_MTAP(ifp, m0);
  968         }
  969         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
  970 
  971         DEBUGOUT(NVE_DEBUG_RUNNING, "nve: nve_ifstart - exit\n");
  972 }
  973 
  974 /* Handle IOCTL events */
  975 static int
  976 nve_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
  977 {
  978         struct nve_softc *sc = ifp->if_softc;
  979         struct ifreq *ifr = (struct ifreq *) data;
  980         struct mii_data *mii;
  981         int error = 0;
  982 
  983         DEBUGOUT(NVE_DEBUG_IOCTL, "nve: nve_ioctl - entry\n");
  984 
  985         switch (command) {
  986         case SIOCSIFMTU:
  987                 /* Set MTU size */
  988                 NVE_LOCK(sc);
  989                 if (ifp->if_mtu == ifr->ifr_mtu) {
  990                         NVE_UNLOCK(sc);
  991                         break;
  992                 }
  993                 if (ifr->ifr_mtu + ifp->if_hdrlen <= MAX_PACKET_SIZE_1518) {
  994                         ifp->if_mtu = ifr->ifr_mtu;
  995                         nve_stop(sc);
  996                         nve_init_locked(sc);
  997                 } else
  998                         error = EINVAL;
  999                 NVE_UNLOCK(sc);
 1000                 break;
 1001 
 1002         case SIOCSIFFLAGS:
 1003                 /* Setup interface flags */
 1004                 NVE_LOCK(sc);
 1005                 if (ifp->if_flags & IFF_UP) {
 1006                         if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
 1007                                 nve_init_locked(sc);
 1008                                 NVE_UNLOCK(sc);
 1009                                 break;
 1010                         }
 1011                 } else {
 1012                         if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 1013                                 nve_stop(sc);
 1014                                 NVE_UNLOCK(sc);
 1015                                 break;
 1016                         }
 1017                 }
 1018                 /* Handle IFF_PROMISC and IFF_ALLMULTI flags. */
 1019                 nve_setmulti(sc);
 1020                 NVE_UNLOCK(sc);
 1021                 break;
 1022 
 1023         case SIOCADDMULTI:
 1024         case SIOCDELMULTI:
 1025                 /* Setup multicast filter */
 1026                 NVE_LOCK(sc);
 1027                 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
 1028                         nve_setmulti(sc);
 1029                 }
 1030                 NVE_UNLOCK(sc);
 1031                 break;
 1032 
 1033         case SIOCGIFMEDIA:
 1034         case SIOCSIFMEDIA:
 1035                 /* Get/Set interface media parameters */
 1036                 mii = device_get_softc(sc->miibus);
 1037                 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
 1038                 break;
 1039 
 1040         default:
 1041                 /* Everything else we forward to generic ether ioctl */
 1042                 error = ether_ioctl(ifp, (int)command, data);
 1043                 break;
 1044         }
 1045 
 1046         DEBUGOUT(NVE_DEBUG_IOCTL, "nve: nve_ioctl - exit\n");
 1047 
 1048         return (error);
 1049 }
 1050 
 1051 /* Interrupt service routine */
 1052 static void
 1053 nve_intr(void *arg)
 1054 {
 1055         struct nve_softc *sc = arg;
 1056         struct ifnet *ifp = sc->ifp;
 1057 
 1058         DEBUGOUT(NVE_DEBUG_INTERRUPT, "nve: nve_intr - entry\n");
 1059 
 1060         NVE_LOCK(sc);
 1061         if (!ifp->if_flags & IFF_UP) {
 1062                 nve_stop(sc);
 1063                 NVE_UNLOCK(sc);
 1064                 return;
 1065         }
 1066         /* Handle interrupt event */
 1067         if (sc->hwapi->pfnQueryInterrupt(sc->hwapi->pADCX)) {
 1068                 sc->hwapi->pfnHandleInterrupt(sc->hwapi->pADCX);
 1069                 sc->hwapi->pfnEnableInterrupts(sc->hwapi->pADCX);
 1070         }
 1071         if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
 1072                 nve_ifstart_locked(ifp);
 1073 
 1074         /* If no pending packets we don't need a timeout */
 1075         if (sc->pending_txs == 0)
 1076                 sc->ifp->if_timer = 0;
 1077         NVE_UNLOCK(sc);
 1078 
 1079         DEBUGOUT(NVE_DEBUG_INTERRUPT, "nve: nve_intr - exit\n");
 1080 
 1081         return;
 1082 }
 1083 
 1084 /* Setup multicast filters */
 1085 static void
 1086 nve_setmulti(struct nve_softc *sc)
 1087 {
 1088         struct ifnet *ifp;
 1089         struct ifmultiaddr *ifma;
 1090         PACKET_FILTER hwfilter;
 1091         int i;
 1092         u_int8_t andaddr[6], oraddr[6];
 1093 
 1094         NVE_LOCK_ASSERT(sc);
 1095 
 1096         DEBUGOUT(NVE_DEBUG_RUNNING, "nve: nve_setmulti - entry\n");
 1097 
 1098         ifp = sc->ifp;
 1099 
 1100         /* Initialize filter */
 1101         hwfilter.ulFilterFlags = 0;
 1102         for (i = 0; i < 6; i++) {
 1103                 hwfilter.acMulticastAddress[i] = 0;
 1104                 hwfilter.acMulticastMask[i] = 0;
 1105         }
 1106 
 1107         if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) {
 1108                 /* Accept all packets */
 1109                 hwfilter.ulFilterFlags |= ACCEPT_ALL_PACKETS;
 1110                 sc->hwapi->pfnSetPacketFilter(sc->hwapi->pADCX, &hwfilter);
 1111                 return;
 1112         }
 1113         /* Setup multicast filter */
 1114         IF_ADDR_LOCK(ifp);
 1115         TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
 1116                 u_char *addrp;
 1117 
 1118                 if (ifma->ifma_addr->sa_family != AF_LINK)
 1119                         continue;
 1120 
 1121                 addrp = LLADDR((struct sockaddr_dl *) ifma->ifma_addr);
 1122                 for (i = 0; i < 6; i++) {
 1123                         u_int8_t mcaddr = addrp[i];
 1124                         andaddr[i] &= mcaddr;
 1125                         oraddr[i] |= mcaddr;
 1126                 }
 1127         }
 1128         IF_ADDR_UNLOCK(ifp);
 1129         for (i = 0; i < 6; i++) {
 1130                 hwfilter.acMulticastAddress[i] = andaddr[i] & oraddr[i];
 1131                 hwfilter.acMulticastMask[i] = andaddr[i] | (~oraddr[i]);
 1132         }
 1133 
 1134         /* Send filter to NVIDIA API */
 1135         sc->hwapi->pfnSetPacketFilter(sc->hwapi->pADCX, &hwfilter);
 1136 
 1137         DEBUGOUT(NVE_DEBUG_RUNNING, "nve: nve_setmulti - exit\n");
 1138 
 1139         return;
 1140 }
 1141 
 1142 /* Change the current media/mediaopts */
 1143 static int
 1144 nve_ifmedia_upd(struct ifnet *ifp)
 1145 {
 1146         struct nve_softc *sc = ifp->if_softc;
 1147 
 1148         NVE_LOCK(sc);
 1149         nve_ifmedia_upd_locked(ifp);
 1150         NVE_UNLOCK(sc);
 1151         return (0);
 1152 }
 1153 
 1154 static void
 1155 nve_ifmedia_upd_locked(struct ifnet *ifp)
 1156 {
 1157         struct nve_softc *sc = ifp->if_softc;
 1158         struct mii_data *mii;
 1159 
 1160         DEBUGOUT(NVE_DEBUG_MII, "nve: nve_ifmedia_upd\n");
 1161 
 1162         NVE_LOCK_ASSERT(sc);
 1163         mii = device_get_softc(sc->miibus);
 1164 
 1165         if (mii->mii_instance) {
 1166                 struct mii_softc *miisc;
 1167                 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL;
 1168                     miisc = LIST_NEXT(miisc, mii_list)) {
 1169                         mii_phy_reset(miisc);
 1170                 }
 1171         }
 1172         mii_mediachg(mii);
 1173 }
 1174 
 1175 /* Update current miibus PHY status of media */
 1176 static void
 1177 nve_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
 1178 {
 1179         struct nve_softc *sc;
 1180         struct mii_data *mii;
 1181 
 1182         DEBUGOUT(NVE_DEBUG_MII, "nve: nve_ifmedia_sts\n");
 1183 
 1184         sc = ifp->if_softc;
 1185         NVE_LOCK(sc);
 1186         mii = device_get_softc(sc->miibus);
 1187         mii_pollstat(mii);
 1188         NVE_UNLOCK(sc);
 1189 
 1190         ifmr->ifm_active = mii->mii_media_active;
 1191         ifmr->ifm_status = mii->mii_media_status;
 1192 
 1193         return;
 1194 }
 1195 
 1196 /* miibus tick timer - maintain link status */
 1197 static void
 1198 nve_tick(void *xsc)
 1199 {
 1200         struct nve_softc *sc = xsc;
 1201         struct mii_data *mii;
 1202         struct ifnet *ifp;
 1203 
 1204         NVE_LOCK_ASSERT(sc);
 1205 
 1206         ifp = sc->ifp;
 1207         nve_update_stats(sc);
 1208 
 1209         mii = device_get_softc(sc->miibus);
 1210         mii_tick(mii);
 1211 
 1212         if (mii->mii_media_status & IFM_ACTIVE &&
 1213             IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
 1214                 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
 1215                         nve_ifstart_locked(ifp);
 1216         }
 1217         callout_reset(&sc->stat_callout, hz, nve_tick, sc);
 1218 
 1219         return;
 1220 }
 1221 
 1222 /* Update ifnet data structure with collected interface stats from API */
 1223 static void
 1224 nve_update_stats(struct nve_softc *sc)
 1225 {
 1226         struct ifnet *ifp = sc->ifp;
 1227         ADAPTER_STATS stats;
 1228 
 1229         NVE_LOCK_ASSERT(sc);
 1230 
 1231         if (sc->hwapi) {
 1232                 sc->hwapi->pfnGetStatistics(sc->hwapi->pADCX, &stats);
 1233 
 1234                 ifp->if_ipackets = stats.ulSuccessfulReceptions;
 1235                 ifp->if_ierrors = stats.ulMissedFrames +
 1236                         stats.ulFailedReceptions +
 1237                         stats.ulCRCErrors +
 1238                         stats.ulFramingErrors +
 1239                         stats.ulOverFlowErrors;
 1240 
 1241                 ifp->if_opackets = stats.ulSuccessfulTransmissions;
 1242                 ifp->if_oerrors = sc->tx_errors +
 1243                         stats.ulFailedTransmissions +
 1244                         stats.ulRetryErrors +
 1245                         stats.ulUnderflowErrors +
 1246                         stats.ulLossOfCarrierErrors +
 1247                         stats.ulLateCollisionErrors;
 1248 
 1249                 ifp->if_collisions = stats.ulLateCollisionErrors;
 1250         }
 1251 
 1252         return;
 1253 }
 1254 
 1255 /* miibus Read PHY register wrapper - calls Nvidia API entry point */
 1256 static int
 1257 nve_miibus_readreg(device_t dev, int phy, int reg)
 1258 {
 1259         struct nve_softc *sc = device_get_softc(dev);
 1260         ULONG data;
 1261 
 1262         DEBUGOUT(NVE_DEBUG_MII, "nve: nve_miibus_readreg - entry\n");
 1263 
 1264         ADAPTER_ReadPhy(sc->hwapi->pADCX, phy, reg, &data);
 1265 
 1266         DEBUGOUT(NVE_DEBUG_MII, "nve: nve_miibus_readreg - exit\n");
 1267 
 1268         return (data);
 1269 }
 1270 
 1271 /* miibus Write PHY register wrapper - calls Nvidia API entry point */
 1272 static void
 1273 nve_miibus_writereg(device_t dev, int phy, int reg, int data)
 1274 {
 1275         struct nve_softc *sc = device_get_softc(dev);
 1276 
 1277         DEBUGOUT(NVE_DEBUG_MII, "nve: nve_miibus_writereg - entry\n");
 1278 
 1279         ADAPTER_WritePhy(sc->hwapi->pADCX, phy, reg, (ulong)data);
 1280 
 1281         DEBUGOUT(NVE_DEBUG_MII, "nve: nve_miibus_writereg - exit\n");
 1282 
 1283         return;
 1284 }
 1285 
 1286 /* Watchdog timer to prevent PHY lockups */
 1287 static void
 1288 nve_watchdog(struct ifnet *ifp)
 1289 {
 1290         struct nve_softc *sc = ifp->if_softc;
 1291         int pending_txs_start;
 1292 
 1293         NVE_LOCK(sc);
 1294 
 1295         /*
 1296          * The nvidia driver blob defers tx completion notifications.
 1297          * Thus, sometimes the watchdog timer will go off when the
 1298          * tx engine is fine, but the tx completions are just deferred.
 1299          * Try kicking the driver blob to clear out any pending tx
 1300          * completions.  If that clears up any of the pending tx
 1301          * operations, then just return without printing the warning
 1302          * message or resetting the adapter, as we can then conclude
 1303          * the chip hasn't actually crashed (it's still sending packets).
 1304          */
 1305         pending_txs_start = sc->pending_txs;
 1306         sc->hwapi->pfnDisableInterrupts(sc->hwapi->pADCX);
 1307         sc->hwapi->pfnHandleInterrupt(sc->hwapi->pADCX);
 1308         sc->hwapi->pfnEnableInterrupts(sc->hwapi->pADCX);
 1309         if (sc->pending_txs < pending_txs_start) {
 1310                 NVE_UNLOCK(sc);
 1311                 return;
 1312         }
 1313 
 1314         device_printf(sc->dev, "device timeout (%d)\n", sc->pending_txs);
 1315 
 1316         sc->tx_errors++;
 1317 
 1318         nve_stop(sc);
 1319         ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
 1320         nve_init_locked(sc);
 1321 
 1322         if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
 1323                 nve_ifstart_locked(ifp);
 1324         NVE_UNLOCK(sc);
 1325 
 1326         return;
 1327 }
 1328 
 1329 /* --- Start of NVOSAPI interface --- */
 1330 
 1331 /* Allocate DMA enabled general use memory for API */
 1332 static NV_SINT32
 1333 nve_osalloc(PNV_VOID ctx, PMEMORY_BLOCK mem)
 1334 {
 1335         struct nve_softc *sc;
 1336         bus_addr_t mem_physical;
 1337 
 1338         DEBUGOUT(NVE_DEBUG_API, "nve: nve_osalloc - %d\n", mem->uiLength);
 1339 
 1340         sc = (struct nve_softc *)ctx;
 1341 
 1342         mem->pLogical = (PVOID)contigmalloc(mem->uiLength, M_DEVBUF,
 1343             M_NOWAIT | M_ZERO, 0, 0xffffffff, PAGE_SIZE, 0);
 1344 
 1345         if (!mem->pLogical) {
 1346                 device_printf(sc->dev, "memory allocation failed\n");
 1347                 return (0);
 1348         }
 1349         memset(mem->pLogical, 0, (ulong)mem->uiLength);
 1350         mem_physical = vtophys(mem->pLogical);
 1351         mem->pPhysical = (PVOID)mem_physical;
 1352 
 1353         DEBUGOUT(NVE_DEBUG_API, "nve: nve_osalloc 0x%x/0x%x - %d\n",
 1354             (uint)mem->pLogical, (uint)mem->pPhysical, (uint)mem->uiLength);
 1355 
 1356         return (1);
 1357 }
 1358 
 1359 /* Free allocated memory */
 1360 static NV_SINT32
 1361 nve_osfree(PNV_VOID ctx, PMEMORY_BLOCK mem)
 1362 {
 1363         DEBUGOUT(NVE_DEBUG_API, "nve: nve_osfree - 0x%x - %d\n",
 1364             (uint)mem->pLogical, (uint) mem->uiLength);
 1365 
 1366         contigfree(mem->pLogical, PAGE_SIZE, M_DEVBUF);
 1367         return (1);
 1368 }
 1369 
 1370 /* Copied directly from nvnet.c */
 1371 static NV_SINT32
 1372 nve_osallocex(PNV_VOID ctx, PMEMORY_BLOCKEX mem_block_ex)
 1373 {
 1374         MEMORY_BLOCK mem_block;
 1375 
 1376         DEBUGOUT(NVE_DEBUG_API, "nve: nve_osallocex\n");
 1377 
 1378         mem_block_ex->pLogical = NULL;
 1379         mem_block_ex->uiLengthOrig = mem_block_ex->uiLength;
 1380 
 1381         if ((mem_block_ex->AllocFlags & ALLOC_MEMORY_ALIGNED) &&
 1382             (mem_block_ex->AlignmentSize > 1)) {
 1383                 DEBUGOUT(NVE_DEBUG_API, "     aligning on %d\n",
 1384                     mem_block_ex->AlignmentSize);
 1385                 mem_block_ex->uiLengthOrig += mem_block_ex->AlignmentSize;
 1386         }
 1387         mem_block.uiLength = mem_block_ex->uiLengthOrig;
 1388 
 1389         if (nve_osalloc(ctx, &mem_block) == 0) {
 1390                 return (0);
 1391         }
 1392         mem_block_ex->pLogicalOrig = mem_block.pLogical;
 1393         mem_block_ex->pPhysicalOrigLow = (unsigned long)mem_block.pPhysical;
 1394         mem_block_ex->pPhysicalOrigHigh = 0;
 1395 
 1396         mem_block_ex->pPhysical = mem_block.pPhysical;
 1397         mem_block_ex->pLogical = mem_block.pLogical;
 1398 
 1399         if (mem_block_ex->uiLength != mem_block_ex->uiLengthOrig) {
 1400                 unsigned int offset;
 1401                 offset = mem_block_ex->pPhysicalOrigLow &
 1402                     (mem_block_ex->AlignmentSize - 1);
 1403 
 1404                 if (offset) {
 1405                         mem_block_ex->pPhysical =
 1406                             (PVOID)((ulong)mem_block_ex->pPhysical +
 1407                             mem_block_ex->AlignmentSize - offset);
 1408                         mem_block_ex->pLogical =
 1409                             (PVOID)((ulong)mem_block_ex->pLogical +
 1410                             mem_block_ex->AlignmentSize - offset);
 1411                 } /* if (offset) */
 1412         } /* if (mem_block_ex->uiLength != *mem_block_ex->uiLengthOrig) */
 1413         return (1);
 1414 }
 1415 
 1416 /* Copied directly from nvnet.c */
 1417 static NV_SINT32
 1418 nve_osfreeex(PNV_VOID ctx, PMEMORY_BLOCKEX mem_block_ex)
 1419 {
 1420         MEMORY_BLOCK mem_block;
 1421 
 1422         DEBUGOUT(NVE_DEBUG_API, "nve: nve_osfreeex\n");
 1423 
 1424         mem_block.pLogical = mem_block_ex->pLogicalOrig;
 1425         mem_block.pPhysical = (PVOID)((ulong)mem_block_ex->pPhysicalOrigLow);
 1426         mem_block.uiLength = mem_block_ex->uiLengthOrig;
 1427 
 1428         return (nve_osfree(ctx, &mem_block));
 1429 }
 1430 
 1431 /* Clear memory region */
 1432 static NV_SINT32
 1433 nve_osclear(PNV_VOID ctx, PNV_VOID mem, NV_SINT32 length)
 1434 {
 1435         DEBUGOUT(NVE_DEBUG_API, "nve: nve_osclear\n");
 1436         memset(mem, 0, length);
 1437         return (1);
 1438 }
 1439 
 1440 /* Sleep for a tick */
 1441 static NV_SINT32
 1442 nve_osdelay(PNV_VOID ctx, NV_UINT32 usec)
 1443 {
 1444         DELAY(usec);
 1445         return (1);
 1446 }
 1447 
 1448 /* Allocate memory for rx buffer */
 1449 static NV_SINT32
 1450 nve_osallocrxbuf(PNV_VOID ctx, PMEMORY_BLOCK mem, PNV_VOID *id)
 1451 {
 1452         struct nve_softc *sc = ctx;
 1453         struct nve_rx_desc *desc;
 1454         struct nve_map_buffer *buf;
 1455         int error;
 1456 
 1457         if (device_is_attached(sc->dev))
 1458                 NVE_LOCK_ASSERT(sc);
 1459 
 1460         DEBUGOUT(NVE_DEBUG_API, "nve: nve_osallocrxbuf\n");
 1461 
 1462         if (sc->pending_rxs == RX_RING_SIZE) {
 1463                 device_printf(sc->dev, "rx ring buffer is full\n");
 1464                 goto fail;
 1465         }
 1466         desc = sc->rx_desc + sc->cur_rx;
 1467         buf = &desc->buf;
 1468 
 1469         if (buf->mbuf == NULL) {
 1470                 buf->mbuf = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
 1471                 if (buf->mbuf == NULL) {
 1472                         device_printf(sc->dev, "failed to allocate memory\n");
 1473                         goto fail;
 1474                 }
 1475                 buf->mbuf->m_len = buf->mbuf->m_pkthdr.len = MCLBYTES;
 1476                 m_adj(buf->mbuf, ETHER_ALIGN);
 1477 
 1478                 error = bus_dmamap_load_mbuf(sc->mtag, buf->map, buf->mbuf,
 1479                     nve_dmamap_rx_cb, &desc->paddr, 0);
 1480                 if (error) {
 1481                         device_printf(sc->dev, "failed to dmamap mbuf\n");
 1482                         m_freem(buf->mbuf);
 1483                         buf->mbuf = NULL;
 1484                         goto fail;
 1485                 }
 1486                 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_PREREAD);
 1487                 desc->buflength = buf->mbuf->m_len;
 1488                 desc->vaddr = mtod(buf->mbuf, caddr_t);
 1489         }
 1490         sc->pending_rxs++;
 1491         sc->cur_rx = (sc->cur_rx + 1) % RX_RING_SIZE;
 1492 
 1493         mem->pLogical = (void *)desc->vaddr;
 1494         mem->pPhysical = (void *)desc->paddr;
 1495         mem->uiLength = desc->buflength;
 1496         *id = (void *)desc;
 1497 
 1498         return (1);
 1499         
 1500 fail:
 1501         return (0);
 1502 }
 1503 
 1504 /* Free the rx buffer */
 1505 static NV_SINT32
 1506 nve_osfreerxbuf(PNV_VOID ctx, PMEMORY_BLOCK mem, PNV_VOID id)
 1507 {
 1508         struct nve_softc *sc = ctx;
 1509         struct nve_rx_desc *desc;
 1510         struct nve_map_buffer *buf;
 1511 
 1512         DEBUGOUT(NVE_DEBUG_API, "nve: nve_osfreerxbuf\n");
 1513 
 1514         desc = (struct nve_rx_desc *) id;
 1515         buf = &desc->buf;
 1516 
 1517         if (buf->mbuf) {
 1518                 bus_dmamap_unload(sc->mtag, buf->map);
 1519                 bus_dmamap_destroy(sc->mtag, buf->map);
 1520                 m_freem(buf->mbuf);
 1521         }
 1522         sc->pending_rxs--;
 1523         buf->mbuf = NULL;
 1524 
 1525         return (1);
 1526 }
 1527 
 1528 /* This gets called by the Nvidia API after our TX packet has been sent */
 1529 static NV_SINT32
 1530 nve_ospackettx(PNV_VOID ctx, PNV_VOID id, NV_UINT32 success)
 1531 {
 1532         struct nve_softc *sc = ctx;
 1533         struct nve_map_buffer *buf;
 1534         struct nve_tx_desc *desc = (struct nve_tx_desc *) id;
 1535         struct ifnet *ifp;
 1536 
 1537         NVE_LOCK_ASSERT(sc);
 1538 
 1539         DEBUGOUT(NVE_DEBUG_API, "nve: nve_ospackettx\n");
 1540 
 1541         ifp = sc->ifp;
 1542         buf = &desc->buf;
 1543         sc->pending_txs--;
 1544 
 1545         /* Unload and free mbuf cluster */
 1546         if (buf->mbuf == NULL)
 1547                 goto fail;
 1548 
 1549         bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTWRITE);
 1550         bus_dmamap_unload(sc->mtag, buf->map);
 1551         m_freem(buf->mbuf);
 1552         buf->mbuf = NULL;
 1553 
 1554         /* Send more packets if we have them */
 1555         if (sc->pending_txs < TX_RING_SIZE)
 1556                 sc->ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 1557 
 1558         if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd) && sc->pending_txs < TX_RING_SIZE)
 1559                 nve_ifstart_locked(ifp);
 1560 
 1561 fail:
 1562 
 1563         return (1);
 1564 }
 1565 
 1566 /* This gets called by the Nvidia API when a new packet has been received */
 1567 /* XXX What is newbuf used for? XXX */
 1568 static NV_SINT32
 1569 nve_ospacketrx(PNV_VOID ctx, PNV_VOID data, NV_UINT32 success, NV_UINT8 *newbuf,
 1570     NV_UINT8 priority)
 1571 {
 1572         struct nve_softc *sc = ctx;
 1573         struct ifnet *ifp;
 1574         struct nve_rx_desc *desc;
 1575         struct nve_map_buffer *buf;
 1576         ADAPTER_READ_DATA *readdata;
 1577         struct mbuf *m;
 1578 
 1579         NVE_LOCK_ASSERT(sc);
 1580 
 1581         DEBUGOUT(NVE_DEBUG_API, "nve: nve_ospacketrx\n");
 1582 
 1583         ifp = sc->ifp;
 1584 
 1585         readdata = (ADAPTER_READ_DATA *) data;
 1586         desc = readdata->pvID;
 1587         buf = &desc->buf;
 1588         bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTREAD);
 1589 
 1590         if (success) {
 1591                 /* Sync DMA bounce buffer. */
 1592                 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTREAD);
 1593 
 1594                 /* First mbuf in packet holds the ethernet and packet headers */
 1595                 buf->mbuf->m_pkthdr.rcvif = ifp;
 1596                 buf->mbuf->m_pkthdr.len = buf->mbuf->m_len =
 1597                     readdata->ulTotalLength;
 1598 
 1599                 bus_dmamap_unload(sc->mtag, buf->map);
 1600 
 1601                 /* Blat the mbuf pointer, kernel will free the mbuf cluster */
 1602                 m = buf->mbuf;
 1603                 buf->mbuf = NULL;
 1604 
 1605                 /* Give mbuf to OS. */
 1606                 NVE_UNLOCK(sc);
 1607                 (*ifp->if_input)(ifp, m);
 1608                 NVE_LOCK(sc);
 1609                 if (readdata->ulFilterMatch & ADREADFL_MULTICAST_MATCH)
 1610                         ifp->if_imcasts++;
 1611 
 1612         } else {
 1613                 bus_dmamap_sync(sc->mtag, buf->map, BUS_DMASYNC_POSTREAD);
 1614                 bus_dmamap_unload(sc->mtag, buf->map);
 1615                 m_freem(buf->mbuf);
 1616                 buf->mbuf = NULL;
 1617         }
 1618 
 1619         sc->cur_rx = desc - sc->rx_desc;
 1620         sc->pending_rxs--;
 1621 
 1622         return (1);
 1623 }
 1624 
 1625 /* This gets called by NVIDIA API when the PHY link state changes */
 1626 static NV_SINT32
 1627 nve_oslinkchg(PNV_VOID ctx, NV_SINT32 enabled)
 1628 {
 1629 
 1630         DEBUGOUT(NVE_DEBUG_API, "nve: nve_oslinkchg\n");
 1631 
 1632         return (1);
 1633 }
 1634 
 1635 /* Setup a watchdog timer */
 1636 static NV_SINT32
 1637 nve_osalloctimer(PNV_VOID ctx, PNV_VOID *timer)
 1638 {
 1639         struct nve_softc *sc = (struct nve_softc *)ctx;
 1640 
 1641         DEBUGOUT(NVE_DEBUG_BROKEN, "nve: nve_osalloctimer\n");
 1642 
 1643         callout_init(&sc->ostimer, CALLOUT_MPSAFE);
 1644         *timer = &sc->ostimer;
 1645 
 1646         return (1);
 1647 }
 1648 
 1649 /* Free the timer */
 1650 static NV_SINT32
 1651 nve_osfreetimer(PNV_VOID ctx, PNV_VOID timer)
 1652 {
 1653 
 1654         DEBUGOUT(NVE_DEBUG_BROKEN, "nve: nve_osfreetimer\n");
 1655 
 1656         callout_drain((struct callout *)timer);
 1657 
 1658         return (1);
 1659 }
 1660 
 1661 /* Setup timer parameters */
 1662 static NV_SINT32
 1663 nve_osinittimer(PNV_VOID ctx, PNV_VOID timer, PTIMER_FUNC func, PNV_VOID parameters)
 1664 {
 1665         struct nve_softc *sc = (struct nve_softc *)ctx;
 1666 
 1667         DEBUGOUT(NVE_DEBUG_BROKEN, "nve: nve_osinittimer\n");
 1668 
 1669         sc->ostimer_func = func;
 1670         sc->ostimer_params = parameters;
 1671 
 1672         return (1);
 1673 }
 1674 
 1675 /* Set the timer to go off */
 1676 static NV_SINT32
 1677 nve_ossettimer(PNV_VOID ctx, PNV_VOID timer, NV_UINT32 delay)
 1678 {
 1679         struct nve_softc *sc = ctx;
 1680 
 1681         DEBUGOUT(NVE_DEBUG_BROKEN, "nve: nve_ossettimer\n");
 1682 
 1683         callout_reset((struct callout *)timer, delay, sc->ostimer_func,
 1684             sc->ostimer_params);
 1685 
 1686         return (1);
 1687 }
 1688 
 1689 /* Cancel the timer */
 1690 static NV_SINT32
 1691 nve_oscanceltimer(PNV_VOID ctx, PNV_VOID timer)
 1692 {
 1693 
 1694         DEBUGOUT(NVE_DEBUG_BROKEN, "nve: nve_oscanceltimer\n");
 1695 
 1696         callout_stop((struct callout *)timer);
 1697 
 1698         return (1);
 1699 }
 1700 
 1701 static NV_SINT32
 1702 nve_ospreprocpkt(PNV_VOID ctx, PNV_VOID readdata, PNV_VOID *id,
 1703     NV_UINT8 *newbuffer, NV_UINT8 priority)
 1704 {
 1705 
 1706         /* Not implemented */
 1707         DEBUGOUT(NVE_DEBUG_BROKEN, "nve: nve_ospreprocpkt\n");
 1708 
 1709         return (1);
 1710 }
 1711 
 1712 static PNV_VOID
 1713 nve_ospreprocpktnopq(PNV_VOID ctx, PNV_VOID readdata)
 1714 {
 1715 
 1716         /* Not implemented */
 1717         DEBUGOUT(NVE_DEBUG_BROKEN, "nve: nve_ospreprocpkt\n");
 1718 
 1719         return (NULL);
 1720 }
 1721 
 1722 static NV_SINT32
 1723 nve_osindicatepkt(PNV_VOID ctx, PNV_VOID *id, NV_UINT32 pktno)
 1724 {
 1725 
 1726         /* Not implemented */
 1727         DEBUGOUT(NVE_DEBUG_BROKEN, "nve: nve_osindicatepkt\n");
 1728 
 1729         return (1);
 1730 }
 1731 
 1732 /* Allocate mutex context (already done in nve_attach) */
 1733 static NV_SINT32
 1734 nve_oslockalloc(PNV_VOID ctx, NV_SINT32 type, PNV_VOID *pLock)
 1735 {
 1736         struct nve_softc *sc = (struct nve_softc *)ctx;
 1737 
 1738         DEBUGOUT(NVE_DEBUG_LOCK, "nve: nve_oslockalloc\n");
 1739 
 1740         *pLock = (void **)sc;
 1741 
 1742         return (1);
 1743 }
 1744 
 1745 /* Obtain a spin lock */
 1746 static NV_SINT32
 1747 nve_oslockacquire(PNV_VOID ctx, NV_SINT32 type, PNV_VOID lock)
 1748 {
 1749 
 1750         DEBUGOUT(NVE_DEBUG_LOCK, "nve: nve_oslockacquire\n");
 1751 
 1752         return (1);
 1753 }
 1754 
 1755 /* Release lock */
 1756 static NV_SINT32
 1757 nve_oslockrelease(PNV_VOID ctx, NV_SINT32 type, PNV_VOID lock)
 1758 {
 1759 
 1760         DEBUGOUT(NVE_DEBUG_LOCK, "nve: nve_oslockrelease\n");
 1761 
 1762         return (1);
 1763 }
 1764 
 1765 /* I have no idea what this is for */
 1766 static PNV_VOID
 1767 nve_osreturnbufvirt(PNV_VOID ctx, PNV_VOID readdata)
 1768 {
 1769 
 1770         /* Not implemented */
 1771         DEBUGOUT(NVE_DEBUG_LOCK, "nve: nve_osreturnbufvirt\n");
 1772         panic("nve: nve_osreturnbufvirtual not implemented\n");
 1773 
 1774         return (NULL);
 1775 }
 1776 
 1777 /* --- End on NVOSAPI interface --- */

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