The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/compat/ndis/subr_ndis.c

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    1 /*-
    2  * Copyright (c) 2003
    3  *      Bill Paul <wpaul@windriver.com>.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by Bill Paul.
   16  * 4. Neither the name of the author nor the names of any co-contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
   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
   30  * THE POSSIBILITY OF SUCH DAMAGE.
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD$");
   35 
   36 /*
   37  * This file implements a translation layer between the BSD networking
   38  * infrasturcture and Windows(R) NDIS network driver modules. A Windows
   39  * NDIS driver calls into several functions in the NDIS.SYS Windows
   40  * kernel module and exports a table of functions designed to be called
   41  * by the NDIS subsystem. Using the PE loader, we can patch our own
   42  * versions of the NDIS routines into a given Windows driver module and
   43  * convince the driver that it is in fact running on Windows.
   44  *
   45  * We provide a table of all our implemented NDIS routines which is patched
   46  * into the driver object code. All our exported routines must use the
   47  * _stdcall calling convention, since that's what the Windows object code
   48  * expects.
   49  */
   50 
   51 
   52 #include <sys/ctype.h>
   53 #include <sys/param.h>
   54 #include <sys/types.h>
   55 #include <sys/errno.h>
   56 
   57 #include <sys/callout.h>
   58 #include <sys/kernel.h>
   59 #include <sys/systm.h>
   60 #include <sys/malloc.h>
   61 #include <sys/lock.h>
   62 #include <sys/mutex.h>
   63 #include <sys/socket.h>
   64 #include <sys/sysctl.h>
   65 #include <sys/timespec.h>
   66 #include <sys/smp.h>
   67 #include <sys/queue.h>
   68 #include <sys/proc.h>
   69 #include <sys/filedesc.h>
   70 #include <sys/namei.h>
   71 #include <sys/fcntl.h>
   72 #include <sys/vnode.h>
   73 #include <sys/kthread.h>
   74 #include <sys/linker.h>
   75 #include <sys/mount.h>
   76 #include <sys/sysproto.h>
   77 
   78 #include <net/if.h>
   79 #include <net/if_arp.h>
   80 #include <net/ethernet.h>
   81 #include <net/if_dl.h>
   82 #include <net/if_media.h>
   83 
   84 #include <machine/atomic.h>
   85 #include <machine/bus.h>
   86 #include <machine/resource.h>
   87 
   88 #include <sys/bus.h>
   89 #include <sys/rman.h>
   90 
   91 #include <machine/stdarg.h>
   92 
   93 #include <net80211/ieee80211_var.h>
   94 #include <net80211/ieee80211_ioctl.h>
   95 
   96 #include <dev/pci/pcireg.h>
   97 #include <dev/pci/pcivar.h>
   98 
   99 #include <compat/ndis/pe_var.h>
  100 #include <compat/ndis/cfg_var.h>
  101 #include <compat/ndis/resource_var.h>
  102 #include <compat/ndis/ntoskrnl_var.h>
  103 #include <compat/ndis/hal_var.h>
  104 #include <compat/ndis/ndis_var.h>
  105 #include <dev/if_ndis/if_ndisvar.h>
  106 
  107 #include <vm/vm.h>
  108 #include <vm/vm_param.h>
  109 #include <vm/pmap.h>
  110 #include <vm/uma.h>
  111 #include <vm/vm_kern.h>
  112 #include <vm/vm_map.h>
  113 
  114 static char ndis_filepath[MAXPATHLEN];
  115 
  116 SYSCTL_STRING(_hw, OID_AUTO, ndis_filepath, CTLFLAG_RW, ndis_filepath,
  117         MAXPATHLEN, "Path used by NdisOpenFile() to search for files");
  118 
  119 static void NdisInitializeWrapper(ndis_handle *,
  120         driver_object *, void *, void *);
  121 static ndis_status NdisMRegisterMiniport(ndis_handle,
  122         ndis_miniport_characteristics *, int);
  123 static ndis_status NdisAllocateMemoryWithTag(void **,
  124         uint32_t, uint32_t);
  125 static ndis_status NdisAllocateMemory(void **,
  126         uint32_t, uint32_t, ndis_physaddr);
  127 static void NdisFreeMemory(void *, uint32_t, uint32_t);
  128 static ndis_status NdisMSetAttributesEx(ndis_handle, ndis_handle,
  129         uint32_t, uint32_t, ndis_interface_type);
  130 static void NdisOpenConfiguration(ndis_status *,
  131         ndis_handle *, ndis_handle);
  132 static void NdisOpenConfigurationKeyByIndex(ndis_status *,
  133         ndis_handle, uint32_t, unicode_string *, ndis_handle *);
  134 static void NdisOpenConfigurationKeyByName(ndis_status *,
  135         ndis_handle, unicode_string *, ndis_handle *);
  136 static ndis_status ndis_encode_parm(ndis_miniport_block *,
  137         struct sysctl_oid *, ndis_parm_type, ndis_config_parm **);
  138 static ndis_status ndis_decode_parm(ndis_miniport_block *,
  139         ndis_config_parm *, char *);
  140 static void NdisReadConfiguration(ndis_status *, ndis_config_parm **,
  141         ndis_handle, unicode_string *, ndis_parm_type);
  142 static void NdisWriteConfiguration(ndis_status *, ndis_handle,
  143         unicode_string *, ndis_config_parm *);
  144 static void NdisCloseConfiguration(ndis_handle);
  145 static void NdisAllocateSpinLock(ndis_spin_lock *);
  146 static void NdisFreeSpinLock(ndis_spin_lock *);
  147 static void NdisAcquireSpinLock(ndis_spin_lock *);
  148 static void NdisReleaseSpinLock(ndis_spin_lock *);
  149 static void NdisDprAcquireSpinLock(ndis_spin_lock *);
  150 static void NdisDprReleaseSpinLock(ndis_spin_lock *);
  151 static void NdisInitializeReadWriteLock(ndis_rw_lock *);
  152 static void NdisAcquireReadWriteLock(ndis_rw_lock *,
  153         uint8_t, ndis_lock_state *);
  154 static void NdisReleaseReadWriteLock(ndis_rw_lock *, ndis_lock_state *);
  155 static uint32_t NdisReadPciSlotInformation(ndis_handle, uint32_t,
  156         uint32_t, void *, uint32_t);
  157 static uint32_t NdisWritePciSlotInformation(ndis_handle, uint32_t,
  158         uint32_t, void *, uint32_t);
  159 static void NdisWriteErrorLogEntry(ndis_handle, ndis_error_code, uint32_t, ...);
  160 static void ndis_map_cb(void *, bus_dma_segment_t *, int, int);
  161 static void NdisMStartBufferPhysicalMapping(ndis_handle,
  162         ndis_buffer *, uint32_t, uint8_t, ndis_paddr_unit *, uint32_t *);
  163 static void NdisMCompleteBufferPhysicalMapping(ndis_handle,
  164         ndis_buffer *, uint32_t);
  165 static void NdisMInitializeTimer(ndis_miniport_timer *, ndis_handle,
  166         ndis_timer_function, void *);
  167 static void NdisInitializeTimer(ndis_timer *,
  168         ndis_timer_function, void *);
  169 static void NdisSetTimer(ndis_timer *, uint32_t);
  170 static void NdisMSetPeriodicTimer(ndis_miniport_timer *, uint32_t);
  171 static void NdisMCancelTimer(ndis_timer *, uint8_t *);
  172 static void ndis_timercall(kdpc *, ndis_miniport_timer *,
  173         void *, void *);
  174 static void NdisMQueryAdapterResources(ndis_status *, ndis_handle,
  175         ndis_resource_list *, uint32_t *);
  176 static ndis_status NdisMRegisterIoPortRange(void **,
  177         ndis_handle, uint32_t, uint32_t);
  178 static void NdisMDeregisterIoPortRange(ndis_handle,
  179         uint32_t, uint32_t, void *);
  180 static void NdisReadNetworkAddress(ndis_status *, void **,
  181         uint32_t *, ndis_handle);
  182 static ndis_status NdisQueryMapRegisterCount(uint32_t, uint32_t *);
  183 static ndis_status NdisMAllocateMapRegisters(ndis_handle,
  184         uint32_t, uint8_t, uint32_t, uint32_t);
  185 static void NdisMFreeMapRegisters(ndis_handle);
  186 static void ndis_mapshared_cb(void *, bus_dma_segment_t *, int, int);
  187 static void NdisMAllocateSharedMemory(ndis_handle, uint32_t,
  188         uint8_t, void **, ndis_physaddr *);
  189 static void ndis_asyncmem_complete(device_object *, void *);
  190 static ndis_status NdisMAllocateSharedMemoryAsync(ndis_handle,
  191         uint32_t, uint8_t, void *);
  192 static void NdisMFreeSharedMemory(ndis_handle, uint32_t,
  193         uint8_t, void *, ndis_physaddr);
  194 static ndis_status NdisMMapIoSpace(void **, ndis_handle,
  195         ndis_physaddr, uint32_t);
  196 static void NdisMUnmapIoSpace(ndis_handle, void *, uint32_t);
  197 static uint32_t NdisGetCacheFillSize(void);
  198 static uint32_t NdisMGetDmaAlignment(ndis_handle);
  199 static ndis_status NdisMInitializeScatterGatherDma(ndis_handle,
  200         uint8_t, uint32_t);
  201 static void NdisUnchainBufferAtFront(ndis_packet *, ndis_buffer **);
  202 static void NdisUnchainBufferAtBack(ndis_packet *, ndis_buffer **);
  203 static void NdisAllocateBufferPool(ndis_status *,
  204         ndis_handle *, uint32_t);
  205 static void NdisFreeBufferPool(ndis_handle);
  206 static void NdisAllocateBuffer(ndis_status *, ndis_buffer **,
  207         ndis_handle, void *, uint32_t);
  208 static void NdisFreeBuffer(ndis_buffer *);
  209 static uint32_t NdisBufferLength(ndis_buffer *);
  210 static void NdisQueryBuffer(ndis_buffer *, void **, uint32_t *);
  211 static void NdisQueryBufferSafe(ndis_buffer *, void **,
  212         uint32_t *, uint32_t);
  213 static void *NdisBufferVirtualAddress(ndis_buffer *);
  214 static void *NdisBufferVirtualAddressSafe(ndis_buffer *, uint32_t);
  215 static void NdisAdjustBufferLength(ndis_buffer *, int);
  216 static uint32_t NdisInterlockedIncrement(uint32_t *);
  217 static uint32_t NdisInterlockedDecrement(uint32_t *);
  218 static void NdisInitializeEvent(ndis_event *);
  219 static void NdisSetEvent(ndis_event *);
  220 static void NdisResetEvent(ndis_event *);
  221 static uint8_t NdisWaitEvent(ndis_event *, uint32_t);
  222 static ndis_status NdisUnicodeStringToAnsiString(ansi_string *,
  223         unicode_string *);
  224 static ndis_status
  225         NdisAnsiStringToUnicodeString(unicode_string *, ansi_string *);
  226 static ndis_status NdisMPciAssignResources(ndis_handle,
  227         uint32_t, ndis_resource_list **);
  228 static ndis_status NdisMRegisterInterrupt(ndis_miniport_interrupt *,
  229         ndis_handle, uint32_t, uint32_t, uint8_t,
  230         uint8_t, ndis_interrupt_mode);
  231 static void NdisMDeregisterInterrupt(ndis_miniport_interrupt *);
  232 static void NdisMRegisterAdapterShutdownHandler(ndis_handle, void *,
  233         ndis_shutdown_handler);
  234 static void NdisMDeregisterAdapterShutdownHandler(ndis_handle);
  235 static uint32_t NDIS_BUFFER_TO_SPAN_PAGES(ndis_buffer *);
  236 static void NdisGetBufferPhysicalArraySize(ndis_buffer *,
  237         uint32_t *);
  238 static void NdisQueryBufferOffset(ndis_buffer *,
  239         uint32_t *, uint32_t *);
  240 static uint32_t NdisReadPcmciaAttributeMemory(ndis_handle,
  241         uint32_t, void *, uint32_t);
  242 static uint32_t NdisWritePcmciaAttributeMemory(ndis_handle,
  243         uint32_t, void *, uint32_t);
  244 static list_entry *NdisInterlockedInsertHeadList(list_entry *,
  245         list_entry *, ndis_spin_lock *);
  246 static list_entry *NdisInterlockedRemoveHeadList(list_entry *,
  247         ndis_spin_lock *);
  248 static list_entry *NdisInterlockedInsertTailList(list_entry *,
  249         list_entry *, ndis_spin_lock *);
  250 static uint8_t
  251         NdisMSynchronizeWithInterrupt(ndis_miniport_interrupt *,
  252         void *, void *);
  253 static void NdisGetCurrentSystemTime(uint64_t *);
  254 static void NdisGetSystemUpTime(uint32_t *);
  255 static void NdisInitializeString(unicode_string *, char *);
  256 static void NdisInitAnsiString(ansi_string *, char *);
  257 static void NdisInitUnicodeString(unicode_string *, uint16_t *);
  258 static void NdisFreeString(unicode_string *);
  259 static ndis_status NdisMRemoveMiniport(ndis_handle *);
  260 static void NdisTerminateWrapper(ndis_handle, void *);
  261 static void NdisMGetDeviceProperty(ndis_handle, device_object **,
  262         device_object **, device_object **, cm_resource_list *,
  263         cm_resource_list *);
  264 static void NdisGetFirstBufferFromPacket(ndis_packet *,
  265         ndis_buffer **, void **, uint32_t *, uint32_t *);
  266 static void NdisGetFirstBufferFromPacketSafe(ndis_packet *,
  267         ndis_buffer **, void **, uint32_t *, uint32_t *, uint32_t);
  268 static int ndis_find_sym(linker_file_t, char *, char *, caddr_t *);
  269 static void NdisOpenFile(ndis_status *, ndis_handle *, uint32_t *,
  270         unicode_string *, ndis_physaddr);
  271 static void NdisMapFile(ndis_status *, void **, ndis_handle);
  272 static void NdisUnmapFile(ndis_handle);
  273 static void NdisCloseFile(ndis_handle);
  274 static uint8_t NdisSystemProcessorCount(void);
  275 static void NdisMIndicateStatusComplete(ndis_handle);
  276 static void NdisMIndicateStatus(ndis_handle, ndis_status,
  277         void *, uint32_t);
  278 static uint8_t ndis_intr(kinterrupt *, void *);
  279 static void ndis_intrhand(kdpc *, ndis_miniport_interrupt *, void *, void *);
  280 static funcptr ndis_findwrap(funcptr);
  281 static void NdisCopyFromPacketToPacket(ndis_packet *,
  282         uint32_t, uint32_t, ndis_packet *, uint32_t, uint32_t *);
  283 static void NdisCopyFromPacketToPacketSafe(ndis_packet *,
  284         uint32_t, uint32_t, ndis_packet *, uint32_t, uint32_t *, uint32_t);
  285 static ndis_status NdisMRegisterDevice(ndis_handle,
  286         unicode_string *, unicode_string *, driver_dispatch **,
  287         void **, ndis_handle *);
  288 static ndis_status NdisMDeregisterDevice(ndis_handle);
  289 static ndis_status
  290         NdisMQueryAdapterInstanceName(unicode_string *, ndis_handle);
  291 static void NdisMRegisterUnloadHandler(ndis_handle, void *);
  292 static void dummy(void);
  293 
  294 /*
  295  * Some really old drivers do not properly check the return value
  296  * from NdisAllocatePacket() and NdisAllocateBuffer() and will
  297  * sometimes allocate few more buffers/packets that they originally
  298  * requested when they created the pool. To prevent this from being
  299  * a problem, we allocate a few extra buffers/packets beyond what
  300  * the driver asks for. This #define controls how many.
  301  */
  302 #define NDIS_POOL_EXTRA         16
  303 
  304 int
  305 ndis_libinit()
  306 {
  307         image_patch_table       *patch;
  308 
  309         strcpy(ndis_filepath, "/compat/ndis");
  310 
  311         patch = ndis_functbl;
  312         while (patch->ipt_func != NULL) {
  313                 windrv_wrap((funcptr)patch->ipt_func,
  314                     (funcptr *)&patch->ipt_wrap,
  315                     patch->ipt_argcnt, patch->ipt_ftype);
  316                 patch++;
  317         }
  318 
  319         return(0);
  320 }
  321 
  322 int
  323 ndis_libfini()
  324 {
  325         image_patch_table       *patch;
  326 
  327         patch = ndis_functbl;
  328         while (patch->ipt_func != NULL) {
  329                 windrv_unwrap(patch->ipt_wrap);
  330                 patch++;
  331         }
  332 
  333         return(0);
  334 }
  335 
  336 static funcptr
  337 ndis_findwrap(func)
  338         funcptr                 func;
  339 {
  340         image_patch_table       *patch;
  341 
  342         patch = ndis_functbl;
  343         while (patch->ipt_func != NULL) {
  344                 if ((funcptr)patch->ipt_func == func)
  345                         return((funcptr)patch->ipt_wrap);
  346                 patch++;
  347         }
  348 
  349         return(NULL);
  350 }
  351 
  352 /*
  353  * This routine does the messy Windows Driver Model device attachment
  354  * stuff on behalf of NDIS drivers. We register our own AddDevice
  355  * routine here
  356  */
  357 static void
  358 NdisInitializeWrapper(wrapper, drv, path, unused)
  359         ndis_handle             *wrapper;
  360         driver_object           *drv;
  361         void                    *path;
  362         void                    *unused;
  363 {
  364         /*
  365          * As of yet, I haven't come up with a compelling
  366          * reason to define a private NDIS wrapper structure,
  367          * so we use a pointer to the driver object as the
  368          * wrapper handle. The driver object has the miniport
  369          * characteristics struct for this driver hung off it
  370          * via IoAllocateDriverObjectExtension(), and that's
  371          * really all the private data we need.
  372          */
  373 
  374         *wrapper = drv;
  375 
  376         /*
  377          * If this was really Windows, we'd be registering dispatch
  378          * routines for the NDIS miniport module here, but we're
  379          * not Windows so all we really need to do is set up an
  380          * AddDevice function that'll be invoked when a new device
  381          * instance appears.
  382          */
  383 
  384         drv->dro_driverext->dre_adddevicefunc = NdisAddDevice;
  385 
  386         return;
  387 }
  388 
  389 static void
  390 NdisTerminateWrapper(handle, syspec)
  391         ndis_handle             handle;
  392         void                    *syspec;
  393 {
  394         /* Nothing to see here, move along. */
  395         return;
  396 }
  397 
  398 static ndis_status
  399 NdisMRegisterMiniport(handle, characteristics, len)
  400         ndis_handle             handle;
  401         ndis_miniport_characteristics *characteristics;
  402         int                     len;
  403 {
  404         ndis_miniport_characteristics   *ch = NULL;
  405         driver_object           *drv;
  406 
  407         drv = (driver_object *)handle;
  408 
  409         /*
  410          * We need to save the NDIS miniport characteristics
  411          * somewhere. This data is per-driver, not per-device
  412          * (all devices handled by the same driver have the
  413          * same characteristics) so we hook it onto the driver
  414          * object using IoAllocateDriverObjectExtension().
  415          * The extra extension info is automagically deleted when
  416          * the driver is unloaded (see windrv_unload()).
  417          */
  418 
  419         if (IoAllocateDriverObjectExtension(drv, (void *)1,
  420             sizeof(ndis_miniport_characteristics), (void **)&ch) !=
  421             STATUS_SUCCESS) {
  422                 return(NDIS_STATUS_RESOURCES);
  423         }
  424 
  425         bzero((char *)ch, sizeof(ndis_miniport_characteristics));
  426 
  427         bcopy((char *)characteristics, (char *)ch, len);
  428 
  429         if (ch->nmc_version_major < 5 || ch->nmc_version_minor < 1) {
  430                 ch->nmc_shutdown_handler = NULL;
  431                 ch->nmc_canceltxpkts_handler = NULL;
  432                 ch->nmc_pnpevent_handler = NULL;
  433         }
  434 
  435         return(NDIS_STATUS_SUCCESS);
  436 }
  437 
  438 static ndis_status
  439 NdisAllocateMemoryWithTag(vaddr, len, tag)
  440         void                    **vaddr;
  441         uint32_t                len;
  442         uint32_t                tag;
  443 {
  444         void                    *mem;
  445 
  446         mem = ExAllocatePoolWithTag(NonPagedPool, len, tag);
  447         if (mem == NULL) {
  448                 return(NDIS_STATUS_RESOURCES);
  449         }
  450         *vaddr = mem;
  451 
  452         return(NDIS_STATUS_SUCCESS);
  453 }
  454 
  455 static ndis_status
  456 NdisAllocateMemory(vaddr, len, flags, highaddr)
  457         void                    **vaddr;
  458         uint32_t                len;
  459         uint32_t                flags;
  460         ndis_physaddr           highaddr;
  461 {
  462         void                    *mem;
  463 
  464         mem = ExAllocatePoolWithTag(NonPagedPool, len, 0);
  465         if (mem == NULL)
  466                 return(NDIS_STATUS_RESOURCES);
  467         *vaddr = mem;
  468 
  469         return(NDIS_STATUS_SUCCESS);
  470 }
  471 
  472 static void
  473 NdisFreeMemory(vaddr, len, flags)
  474         void                    *vaddr;
  475         uint32_t                len;
  476         uint32_t                flags;
  477 {
  478         if (len == 0)
  479                 return;
  480 
  481         ExFreePool(vaddr);
  482 
  483         return;
  484 }
  485 
  486 static ndis_status
  487 NdisMSetAttributesEx(adapter_handle, adapter_ctx, hangsecs,
  488                         flags, iftype)
  489         ndis_handle                     adapter_handle;
  490         ndis_handle                     adapter_ctx;
  491         uint32_t                        hangsecs;
  492         uint32_t                        flags;
  493         ndis_interface_type             iftype;
  494 {
  495         ndis_miniport_block             *block;
  496 
  497         /*
  498          * Save the adapter context, we need it for calling
  499          * the driver's internal functions.
  500          */
  501         block = (ndis_miniport_block *)adapter_handle;
  502         block->nmb_miniportadapterctx = adapter_ctx;
  503         block->nmb_checkforhangsecs = hangsecs;
  504         block->nmb_flags = flags;
  505 
  506         return(NDIS_STATUS_SUCCESS);
  507 }
  508 
  509 static void
  510 NdisOpenConfiguration(status, cfg, wrapctx)
  511         ndis_status             *status;
  512         ndis_handle             *cfg;
  513         ndis_handle             wrapctx;
  514 {
  515         *cfg = wrapctx;
  516         *status = NDIS_STATUS_SUCCESS;
  517 
  518         return;
  519 }
  520 
  521 static void
  522 NdisOpenConfigurationKeyByName(status, cfg, subkey, subhandle)
  523         ndis_status             *status;
  524         ndis_handle             cfg;
  525         unicode_string          *subkey;
  526         ndis_handle             *subhandle;
  527 {
  528         *subhandle = cfg;
  529         *status = NDIS_STATUS_SUCCESS;
  530 
  531         return;
  532 }
  533 
  534 static void
  535 NdisOpenConfigurationKeyByIndex(status, cfg, idx, subkey, subhandle)
  536         ndis_status             *status;
  537         ndis_handle             cfg;
  538         uint32_t                idx;
  539         unicode_string          *subkey;
  540         ndis_handle             *subhandle;
  541 {
  542         *status = NDIS_STATUS_FAILURE;
  543 
  544         return;
  545 }
  546 
  547 static ndis_status
  548 ndis_encode_parm(block, oid, type, parm)
  549         ndis_miniport_block     *block;
  550         struct sysctl_oid       *oid;
  551         ndis_parm_type          type;
  552         ndis_config_parm        **parm;
  553 {
  554         ndis_config_parm        *p;
  555         ndis_parmlist_entry     *np;
  556         unicode_string          *us;
  557         ansi_string             as;
  558         int                     base = 0;
  559         uint32_t                val;
  560         char                    tmp[32];
  561 
  562         np = ExAllocatePoolWithTag(NonPagedPool,
  563             sizeof(ndis_parmlist_entry), 0);
  564         if (np == NULL)
  565                 return(NDIS_STATUS_RESOURCES);
  566         InsertHeadList((&block->nmb_parmlist), (&np->np_list));
  567         *parm = p = &np->np_parm;
  568 
  569         switch(type) {
  570         case ndis_parm_string:
  571                 /* See if this might be a number. */
  572                 val = strtoul((char *)oid->oid_arg1, NULL, 10);
  573                 us = &p->ncp_parmdata.ncp_stringdata;
  574                 p->ncp_type = ndis_parm_string;
  575                 if (val) {
  576                         snprintf(tmp, 32, "%x", val);
  577                         RtlInitAnsiString(&as, tmp);
  578                 } else {
  579                         RtlInitAnsiString(&as, (char *)oid->oid_arg1);
  580                 }
  581 
  582                 if (RtlAnsiStringToUnicodeString(us, &as, TRUE)) {
  583                         ExFreePool(np);
  584                         return(NDIS_STATUS_RESOURCES);
  585                 }
  586                 break;
  587         case ndis_parm_int:
  588                 if (strncmp((char *)oid->oid_arg1, "0x", 2) == 0)
  589                         base = 16;
  590                 else
  591                         base = 10;
  592                 p->ncp_type = ndis_parm_int;
  593                 p->ncp_parmdata.ncp_intdata =
  594                     strtol((char *)oid->oid_arg1, NULL, base);
  595                 break;
  596         case ndis_parm_hexint:
  597 #ifdef notdef
  598                 if (strncmp((char *)oid->oid_arg1, "0x", 2) == 0)
  599                         base = 16;
  600                 else
  601                         base = 10;
  602 #endif
  603                 base = 16;
  604                 p->ncp_type = ndis_parm_hexint;
  605                 p->ncp_parmdata.ncp_intdata =
  606                     strtoul((char *)oid->oid_arg1, NULL, base);
  607                 break;
  608         default:
  609                 return(NDIS_STATUS_FAILURE);
  610                 break;
  611         }
  612 
  613         return(NDIS_STATUS_SUCCESS);
  614 }
  615 
  616 int
  617 ndis_strcasecmp(s1, s2)
  618         const char              *s1;
  619         const char              *s2;
  620 {
  621         char                    a, b;
  622 
  623         /*
  624          * In the kernel, toupper() is a macro. Have to be careful
  625          * not to use pointer arithmetic when passing it arguments.
  626          */
  627 
  628         while(1) {
  629                 a = *s1;
  630                 b = *s2++;
  631                 if (toupper(a) != toupper(b))
  632                         break;
  633                 if (*s1++ == '\0')
  634                         return(0);
  635         }
  636 
  637         return (*(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1));
  638 }
  639 
  640 int
  641 ndis_strncasecmp(s1, s2, n)
  642         const char              *s1;
  643         const char              *s2;
  644         size_t                  n;
  645 {
  646         char                    a, b;
  647 
  648         if (n != 0) {
  649                 do {
  650                         a = *s1;
  651                         b = *s2++;
  652                         if (toupper(a) != toupper(b))
  653                                 return (*(const unsigned char *)s1 -
  654                                     *(const unsigned char *)(s2 - 1));
  655                         if (*s1++ == '\0')
  656                                 break;
  657                 } while (--n != 0);
  658         }
  659 
  660         return(0);
  661 }
  662 
  663 static void
  664 NdisReadConfiguration(status, parm, cfg, key, type)
  665         ndis_status             *status;
  666         ndis_config_parm        **parm;
  667         ndis_handle             cfg;
  668         unicode_string          *key;
  669         ndis_parm_type          type;
  670 {
  671         char                    *keystr = NULL;
  672         ndis_miniport_block     *block;
  673         struct ndis_softc       *sc;
  674         struct sysctl_oid       *oidp;
  675         struct sysctl_ctx_entry *e;
  676         ansi_string             as;
  677 
  678         block = (ndis_miniport_block *)cfg;
  679         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
  680 
  681         if (key->us_len == 0 || key->us_buf == NULL) {
  682                 *status = NDIS_STATUS_FAILURE;
  683                 return;
  684         }
  685 
  686         if (RtlUnicodeStringToAnsiString(&as, key, TRUE)) {
  687                 *status = NDIS_STATUS_RESOURCES;
  688                 return;
  689         }
  690 
  691         keystr = as.as_buf;
  692 
  693         /*
  694          * See if registry key is already in a list of known keys
  695          * included with the driver.
  696          */
  697 #if __FreeBSD_version < 502113
  698         TAILQ_FOREACH(e, &sc->ndis_ctx, link) {
  699 #else
  700         TAILQ_FOREACH(e, device_get_sysctl_ctx(sc->ndis_dev), link) {
  701 #endif
  702                 oidp = e->entry;
  703                 if (ndis_strcasecmp(oidp->oid_name, keystr) == 0) {
  704                         if (strcmp((char *)oidp->oid_arg1, "UNSET") == 0) {
  705                                 RtlFreeAnsiString(&as);
  706                                 *status = NDIS_STATUS_FAILURE;
  707                                 return;
  708                         }
  709 
  710                         *status = ndis_encode_parm(block, oidp, type, parm);
  711                         RtlFreeAnsiString(&as);
  712                         return;
  713                 }
  714         }
  715 
  716         /*
  717          * If the key didn't match, add it to the list of dynamically
  718          * created ones. Sometimes, drivers refer to registry keys
  719          * that aren't documented in their .INF files. These keys
  720          * are supposed to be created by some sort of utility or
  721          * control panel snap-in that comes with the driver software.
  722          * Sometimes it's useful to be able to manipulate these.
  723          * If the driver requests the key in the form of a string,
  724          * make its default value an empty string, otherwise default
  725          * it to "".
  726          */
  727 
  728         if (type == ndis_parm_int || type == ndis_parm_hexint)
  729                 ndis_add_sysctl(sc, keystr, "(dynamic integer key)",
  730                     "UNSET", CTLFLAG_RW);
  731         else
  732                 ndis_add_sysctl(sc, keystr, "(dynamic string key)",
  733                     "UNSET", CTLFLAG_RW);
  734 
  735         RtlFreeAnsiString(&as);
  736         *status = NDIS_STATUS_FAILURE;
  737 
  738         return;
  739 }
  740 
  741 static ndis_status
  742 ndis_decode_parm(block, parm, val)
  743         ndis_miniport_block     *block;
  744         ndis_config_parm        *parm;
  745         char                    *val;
  746 {
  747         unicode_string          *ustr;
  748         ansi_string             as;
  749 
  750         switch(parm->ncp_type) {
  751         case ndis_parm_string:
  752                 ustr = &parm->ncp_parmdata.ncp_stringdata;
  753                 if (RtlUnicodeStringToAnsiString(&as, ustr, TRUE))
  754                         return(NDIS_STATUS_RESOURCES);
  755                 bcopy(as.as_buf, val, as.as_len);
  756                 RtlFreeAnsiString(&as);
  757                 break;
  758         case ndis_parm_int:
  759                 sprintf(val, "%d", parm->ncp_parmdata.ncp_intdata);
  760                 break;
  761         case ndis_parm_hexint:
  762                 sprintf(val, "%xu", parm->ncp_parmdata.ncp_intdata);
  763                 break;
  764         default:
  765                 return(NDIS_STATUS_FAILURE);
  766                 break;
  767         }
  768         return(NDIS_STATUS_SUCCESS);
  769 }
  770 
  771 static void
  772 NdisWriteConfiguration(status, cfg, key, parm)
  773         ndis_status             *status;
  774         ndis_handle             cfg;
  775         unicode_string          *key;
  776         ndis_config_parm        *parm;
  777 {
  778         ansi_string             as;
  779         char                    *keystr = NULL;
  780         ndis_miniport_block     *block;
  781         struct ndis_softc       *sc;
  782         struct sysctl_oid       *oidp;
  783         struct sysctl_ctx_entry *e;
  784         char                    val[256];
  785 
  786         block = (ndis_miniport_block *)cfg;
  787         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
  788 
  789         if (RtlUnicodeStringToAnsiString(&as, key, TRUE)) {
  790                 *status = NDIS_STATUS_RESOURCES;
  791                 return;
  792         }
  793 
  794         keystr = as.as_buf;
  795 
  796         /* Decode the parameter into a string. */
  797         bzero(val, sizeof(val));
  798         *status = ndis_decode_parm(block, parm, val);
  799         if (*status != NDIS_STATUS_SUCCESS) {
  800                 RtlFreeAnsiString(&as);
  801                 return;
  802         }
  803 
  804         /* See if the key already exists. */
  805 
  806 #if __FreeBSD_version < 502113
  807         TAILQ_FOREACH(e, &sc->ndis_ctx, link) {
  808 #else
  809         TAILQ_FOREACH(e, device_get_sysctl_ctx(sc->ndis_dev), link) {
  810 #endif
  811                 oidp = e->entry;
  812                 if (ndis_strcasecmp(oidp->oid_name, keystr) == 0) {
  813                         /* Found it, set the value. */
  814                         strcpy((char *)oidp->oid_arg1, val);
  815                         RtlFreeAnsiString(&as);
  816                         return;
  817                 }
  818         }
  819 
  820         /* Not found, add a new key with the specified value. */
  821         ndis_add_sysctl(sc, keystr, "(dynamically set key)",
  822                     val, CTLFLAG_RW);
  823 
  824         RtlFreeAnsiString(&as);
  825         *status = NDIS_STATUS_SUCCESS;
  826         return;
  827 }
  828 
  829 static void
  830 NdisCloseConfiguration(cfg)
  831         ndis_handle             cfg;
  832 {
  833         list_entry              *e;
  834         ndis_parmlist_entry     *pe;
  835         ndis_miniport_block     *block;
  836         ndis_config_parm        *p;
  837 
  838         block = (ndis_miniport_block *)cfg;
  839 
  840         while (!IsListEmpty(&block->nmb_parmlist)) {
  841                 e = RemoveHeadList(&block->nmb_parmlist);
  842                 pe = CONTAINING_RECORD(e, ndis_parmlist_entry, np_list);
  843                 p = &pe->np_parm;
  844                 if (p->ncp_type == ndis_parm_string)
  845                         RtlFreeUnicodeString(&p->ncp_parmdata.ncp_stringdata);
  846                 ExFreePool(e);
  847         }
  848 
  849         return;
  850 }
  851 
  852 /*
  853  * Initialize a Windows spinlock.
  854  */
  855 static void
  856 NdisAllocateSpinLock(lock)
  857         ndis_spin_lock          *lock;
  858 {
  859         KeInitializeSpinLock(&lock->nsl_spinlock);
  860         lock->nsl_kirql = 0;
  861 
  862         return;
  863 }
  864 
  865 /*
  866  * Destroy a Windows spinlock. This is a no-op for now. There are two reasons
  867  * for this. One is that it's sort of superfluous: we don't have to do anything
  868  * special to deallocate the spinlock. The other is that there are some buggy
  869  * drivers which call NdisFreeSpinLock() _after_ calling NdisFreeMemory() on
  870  * the block of memory in which the spinlock resides. (Yes, ADMtek, I'm
  871  * talking to you.)
  872  */
  873 static void
  874 NdisFreeSpinLock(lock)
  875         ndis_spin_lock          *lock;
  876 {
  877 #ifdef notdef
  878         KeInitializeSpinLock(&lock->nsl_spinlock);
  879         lock->nsl_kirql = 0;
  880 #endif
  881         return;
  882 }
  883 
  884 /*
  885  * Acquire a spinlock from IRQL <= DISPATCH_LEVEL.
  886  */
  887 
  888 static void
  889 NdisAcquireSpinLock(lock)
  890         ndis_spin_lock          *lock;
  891 {
  892         KeAcquireSpinLock(&lock->nsl_spinlock, &lock->nsl_kirql);
  893         return;
  894 }
  895 
  896 /*
  897  * Release a spinlock from IRQL == DISPATCH_LEVEL.
  898  */
  899 
  900 static void
  901 NdisReleaseSpinLock(lock)
  902         ndis_spin_lock          *lock;
  903 {
  904         KeReleaseSpinLock(&lock->nsl_spinlock, lock->nsl_kirql);
  905         return;
  906 }
  907 
  908 /*
  909  * Acquire a spinlock when already running at IRQL == DISPATCH_LEVEL.
  910  */
  911 static void
  912 NdisDprAcquireSpinLock(lock)
  913         ndis_spin_lock          *lock;
  914 {
  915         KeAcquireSpinLockAtDpcLevel(&lock->nsl_spinlock);
  916         return;
  917 }
  918 
  919 /*
  920  * Release a spinlock without leaving IRQL == DISPATCH_LEVEL.
  921  */
  922 static void
  923 NdisDprReleaseSpinLock(lock)
  924         ndis_spin_lock          *lock;
  925 {
  926         KeReleaseSpinLockFromDpcLevel(&lock->nsl_spinlock);
  927         return;
  928 }
  929 
  930 static void
  931 NdisInitializeReadWriteLock(lock)
  932         ndis_rw_lock            *lock;
  933 {
  934         KeInitializeSpinLock(&lock->nrl_spinlock);
  935         bzero((char *)&lock->nrl_rsvd, sizeof(lock->nrl_rsvd));
  936         return;
  937 }
  938 
  939 static void
  940 NdisAcquireReadWriteLock(lock, writeacc, state)
  941         ndis_rw_lock            *lock;
  942         uint8_t                 writeacc;
  943         ndis_lock_state         *state;
  944 {
  945         if (writeacc == TRUE) {
  946                 KeAcquireSpinLock(&lock->nrl_spinlock, &state->nls_oldirql);
  947                 lock->nrl_rsvd[0]++;
  948         } else
  949                 lock->nrl_rsvd[1]++;
  950 
  951         return;
  952 }
  953 
  954 static void
  955 NdisReleaseReadWriteLock(lock, state)
  956         ndis_rw_lock            *lock;
  957         ndis_lock_state         *state;
  958 {
  959         if (lock->nrl_rsvd[0]) {
  960                 lock->nrl_rsvd[0]--;
  961                 KeReleaseSpinLock(&lock->nrl_spinlock, state->nls_oldirql);
  962         } else
  963                 lock->nrl_rsvd[1]--;
  964 
  965         return;
  966 }
  967 
  968 static uint32_t
  969 NdisReadPciSlotInformation(adapter, slot, offset, buf, len)
  970         ndis_handle             adapter;
  971         uint32_t                slot;
  972         uint32_t                offset;
  973         void                    *buf;
  974         uint32_t                len;
  975 {
  976         ndis_miniport_block     *block;
  977         int                     i;
  978         char                    *dest;
  979         device_t                dev;
  980 
  981         block = (ndis_miniport_block *)adapter;
  982         dest = buf;
  983         if (block == NULL)
  984                 return(0);
  985 
  986         dev = block->nmb_physdeviceobj->do_devext;
  987 
  988         /*
  989          * I have a test system consisting of a Sun w2100z
  990          * dual 2.4Ghz Opteron machine and an Atheros 802.11a/b/g
  991          * "Aries" miniPCI NIC. (The NIC is installed in the
  992          * machine using a miniPCI to PCI bus adapter card.)
  993          * When running in SMP mode, I found that
  994          * performing a large number of consecutive calls to
  995          * NdisReadPciSlotInformation() would result in a
  996          * sudden system reset (or in some cases a freeze).
  997          * My suspicion is that the multiple reads are somehow
  998          * triggering a fatal PCI bus error that leads to a
  999          * machine check. The 1us delay in the loop below
 1000          * seems to prevent this problem.
 1001          */
 1002 
 1003         for (i = 0; i < len; i++) {
 1004                 DELAY(1);
 1005                 dest[i] = pci_read_config(dev, i + offset, 1);
 1006         }
 1007 
 1008         return(len);
 1009 }
 1010 
 1011 static uint32_t
 1012 NdisWritePciSlotInformation(adapter, slot, offset, buf, len)
 1013         ndis_handle             adapter;
 1014         uint32_t                slot;
 1015         uint32_t                offset;
 1016         void                    *buf;
 1017         uint32_t                len;
 1018 {
 1019         ndis_miniport_block     *block;
 1020         int                     i;
 1021         char                    *dest;
 1022         device_t                dev;
 1023 
 1024         block = (ndis_miniport_block *)adapter;
 1025         dest = buf;
 1026 
 1027         if (block == NULL)
 1028                 return(0);
 1029 
 1030         dev = block->nmb_physdeviceobj->do_devext;
 1031         for (i = 0; i < len; i++) {
 1032                 DELAY(1);
 1033                 pci_write_config(dev, i + offset, dest[i], 1);
 1034         }
 1035 
 1036         return(len);
 1037 }
 1038 
 1039 /*
 1040  * The errorlog routine uses a variable argument list, so we
 1041  * have to declare it this way.
 1042  */
 1043 
 1044 #define ERRMSGLEN 512
 1045 static void
 1046 NdisWriteErrorLogEntry(ndis_handle adapter, ndis_error_code code,
 1047         uint32_t numerrors, ...)
 1048 {
 1049         ndis_miniport_block     *block;
 1050         va_list                 ap;
 1051         int                     i, error;
 1052         char                    *str = NULL;
 1053         uint16_t                flags;
 1054         device_t                dev;
 1055         driver_object           *drv;
 1056         struct ndis_softc       *sc;
 1057         struct ifnet            *ifp;
 1058         unicode_string          us;
 1059         ansi_string             as = { 0, 0, NULL };
 1060 
 1061         block = (ndis_miniport_block *)adapter;
 1062         dev = block->nmb_physdeviceobj->do_devext;
 1063         drv = block->nmb_deviceobj->do_drvobj;
 1064         sc = device_get_softc(dev);
 1065         ifp = sc->ifp;
 1066 
 1067         if (ifp->if_flags & IFF_DEBUG) {
 1068                 error = pe_get_message((vm_offset_t)drv->dro_driverstart,
 1069                     code, &str, &i, &flags);
 1070                 if (error == 0) {
 1071                         if (flags & MESSAGE_RESOURCE_UNICODE) {
 1072                                 RtlInitUnicodeString(&us, (uint16_t *)str);
 1073                                 if (RtlUnicodeStringToAnsiString(&as,
 1074                                     &us, TRUE) == STATUS_SUCCESS)
 1075                                         str = as.as_buf;
 1076                                 else
 1077                                         str = NULL;
 1078                         }
 1079                 }
 1080         }
 1081 
 1082         device_printf (dev, "NDIS ERROR: %x (%s)\n", code,
 1083             str == NULL ? "unknown error" : str);
 1084 
 1085         if (ifp->if_flags & IFF_DEBUG) {
 1086                 device_printf (dev, "NDIS NUMERRORS: %x\n", numerrors);
 1087                 va_start(ap, numerrors);
 1088                 for (i = 0; i < numerrors; i++)
 1089                         device_printf (dev, "argptr: %p\n",
 1090                             va_arg(ap, void *));
 1091                 va_end(ap);
 1092         }
 1093 
 1094         if (as.as_len)
 1095                 RtlFreeAnsiString(&as);
 1096 
 1097         return;
 1098 }
 1099 
 1100 static void
 1101 ndis_map_cb(arg, segs, nseg, error)
 1102         void                    *arg;
 1103         bus_dma_segment_t       *segs;
 1104         int                     nseg;
 1105         int                     error;
 1106 {
 1107         struct ndis_map_arg     *ctx;
 1108         int                     i;
 1109 
 1110         if (error)
 1111                 return;
 1112 
 1113         ctx = arg;
 1114 
 1115         for (i = 0; i < nseg; i++) {
 1116                 ctx->nma_fraglist[i].npu_physaddr.np_quad = segs[i].ds_addr;
 1117                 ctx->nma_fraglist[i].npu_len = segs[i].ds_len;
 1118         }
 1119 
 1120         ctx->nma_cnt = nseg;
 1121 
 1122         return;
 1123 }
 1124 
 1125 static void
 1126 NdisMStartBufferPhysicalMapping(adapter, buf, mapreg, writedev, addrarray, arraysize)
 1127         ndis_handle             adapter;
 1128         ndis_buffer             *buf;
 1129         uint32_t                mapreg;
 1130         uint8_t                 writedev;
 1131         ndis_paddr_unit         *addrarray;
 1132         uint32_t                *arraysize;
 1133 {
 1134         ndis_miniport_block     *block;
 1135         struct ndis_softc       *sc;
 1136         struct ndis_map_arg     nma;
 1137         bus_dmamap_t            map;
 1138         int                     error;
 1139 
 1140         if (adapter == NULL)
 1141                 return;
 1142 
 1143         block = (ndis_miniport_block *)adapter;
 1144         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1145 
 1146         if (mapreg > sc->ndis_mmapcnt)
 1147                 return;
 1148 
 1149         map = sc->ndis_mmaps[mapreg];
 1150         nma.nma_fraglist = addrarray;
 1151 
 1152         error = bus_dmamap_load(sc->ndis_mtag, map,
 1153             MmGetMdlVirtualAddress(buf), MmGetMdlByteCount(buf), ndis_map_cb,
 1154             (void *)&nma, BUS_DMA_NOWAIT);
 1155 
 1156         if (error)
 1157                 return;
 1158 
 1159         bus_dmamap_sync(sc->ndis_mtag, map,
 1160             writedev ? BUS_DMASYNC_PREWRITE : BUS_DMASYNC_PREREAD);
 1161 
 1162         *arraysize = nma.nma_cnt;
 1163 
 1164         return;
 1165 }
 1166 
 1167 static void
 1168 NdisMCompleteBufferPhysicalMapping(adapter, buf, mapreg)
 1169         ndis_handle             adapter;
 1170         ndis_buffer             *buf;
 1171         uint32_t                mapreg;
 1172 {
 1173         ndis_miniport_block     *block;
 1174         struct ndis_softc       *sc;
 1175         bus_dmamap_t            map;
 1176 
 1177         if (adapter == NULL)
 1178                 return;
 1179 
 1180         block = (ndis_miniport_block *)adapter;
 1181         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1182 
 1183         if (mapreg > sc->ndis_mmapcnt)
 1184                 return;
 1185 
 1186         map = sc->ndis_mmaps[mapreg];
 1187 
 1188         bus_dmamap_sync(sc->ndis_mtag, map,
 1189             BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
 1190 
 1191         bus_dmamap_unload(sc->ndis_mtag, map);
 1192 
 1193         return;
 1194 }
 1195 
 1196 /*
 1197  * This is an older (?) timer init routine which doesn't
 1198  * accept a miniport context handle. Serialized miniports should
 1199  * never call this function.
 1200  */
 1201 
 1202 static void
 1203 NdisInitializeTimer(timer, func, ctx)
 1204         ndis_timer              *timer;
 1205         ndis_timer_function     func;
 1206         void                    *ctx;
 1207 {
 1208         KeInitializeTimer(&timer->nt_ktimer);
 1209         KeInitializeDpc(&timer->nt_kdpc, func, ctx);
 1210         KeSetImportanceDpc(&timer->nt_kdpc, KDPC_IMPORTANCE_LOW);
 1211 
 1212         return;
 1213 }
 1214 
 1215 static void
 1216 ndis_timercall(dpc, timer, sysarg1, sysarg2)
 1217         kdpc                    *dpc;
 1218         ndis_miniport_timer     *timer;
 1219         void                    *sysarg1;
 1220         void                    *sysarg2;
 1221 {
 1222         /*
 1223          * Since we're called as a DPC, we should be running
 1224          * at DISPATCH_LEVEL here. This means to acquire the
 1225          * spinlock, we can use KeAcquireSpinLockAtDpcLevel()
 1226          * rather than KeAcquireSpinLock().
 1227          */
 1228         if (NDIS_SERIALIZED(timer->nmt_block))
 1229                 KeAcquireSpinLockAtDpcLevel(&timer->nmt_block->nmb_lock);
 1230 
 1231         MSCALL4(timer->nmt_timerfunc, dpc, timer->nmt_timerctx,
 1232             sysarg1, sysarg2);
 1233 
 1234         if (NDIS_SERIALIZED(timer->nmt_block))
 1235                 KeReleaseSpinLockFromDpcLevel(&timer->nmt_block->nmb_lock);
 1236 
 1237         return;
 1238 }
 1239 
 1240 /*
 1241  * For a long time I wondered why there were two NDIS timer initialization
 1242  * routines, and why this one needed an NDIS_MINIPORT_TIMER and the
 1243  * MiniportAdapterHandle. The NDIS_MINIPORT_TIMER has its own callout
 1244  * function and context pointers separate from those in the DPC, which
 1245  * allows for another level of indirection: when the timer fires, we
 1246  * can have our own timer function invoked, and from there we can call
 1247  * the driver's function. But why go to all that trouble? Then it hit
 1248  * me: for serialized miniports, the timer callouts are not re-entrant.
 1249  * By trapping the callouts and having access to the MiniportAdapterHandle,
 1250  * we can protect the driver callouts by acquiring the NDIS serialization
 1251  * lock. This is essential for allowing serialized miniports to work
 1252  * correctly on SMP systems. On UP hosts, setting IRQL to DISPATCH_LEVEL
 1253  * is enough to prevent other threads from pre-empting you, but with
 1254  * SMP, you must acquire a lock as well, otherwise the other CPU is
 1255  * free to clobber you.
 1256  */
 1257 static void
 1258 NdisMInitializeTimer(timer, handle, func, ctx)
 1259         ndis_miniport_timer     *timer;
 1260         ndis_handle             handle;
 1261         ndis_timer_function     func;
 1262         void                    *ctx;
 1263 {
 1264         /* Save the driver's funcptr and context */
 1265 
 1266         timer->nmt_timerfunc = func;
 1267         timer->nmt_timerctx = ctx;
 1268         timer->nmt_block = handle;
 1269 
 1270         /*
 1271          * Set up the timer so it will call our intermediate DPC.
 1272          * Be sure to use the wrapped entry point, since
 1273          * ntoskrnl_run_dpc() expects to invoke a function with
 1274          * Microsoft calling conventions.
 1275          */
 1276         KeInitializeTimer(&timer->nmt_ktimer);
 1277         KeInitializeDpc(&timer->nmt_kdpc,
 1278             ndis_findwrap((funcptr)ndis_timercall), timer);
 1279         timer->nmt_ktimer.k_dpc = &timer->nmt_kdpc;
 1280 
 1281         return;
 1282 }
 1283 
 1284 /*
 1285  * In Windows, there's both an NdisMSetTimer() and an NdisSetTimer(),
 1286  * but the former is just a macro wrapper around the latter.
 1287  */
 1288 static void
 1289 NdisSetTimer(timer, msecs)
 1290         ndis_timer              *timer;
 1291         uint32_t                msecs;
 1292 {
 1293         /*
 1294          * KeSetTimer() wants the period in
 1295          * hundred nanosecond intervals.
 1296          */
 1297         KeSetTimer(&timer->nt_ktimer,
 1298             ((int64_t)msecs * -10000), &timer->nt_kdpc);
 1299 
 1300         return;
 1301 }
 1302 
 1303 static void
 1304 NdisMSetPeriodicTimer(timer, msecs)
 1305         ndis_miniport_timer     *timer;
 1306         uint32_t                msecs;
 1307 {
 1308         KeSetTimerEx(&timer->nmt_ktimer,
 1309             ((int64_t)msecs * -10000), msecs, &timer->nmt_kdpc);
 1310 
 1311         return;
 1312 }
 1313 
 1314 /*
 1315  * Technically, this is really NdisCancelTimer(), but we also
 1316  * (ab)use it for NdisMCancelTimer(), since in our implementation
 1317  * we don't need the extra info in the ndis_miniport_timer
 1318  * structure just to cancel a timer.
 1319  */
 1320 
 1321 static void
 1322 NdisMCancelTimer(timer, cancelled)
 1323         ndis_timer              *timer;
 1324         uint8_t                 *cancelled;
 1325 {
 1326         *cancelled = KeCancelTimer(&timer->nt_ktimer);
 1327         return;
 1328 }
 1329 
 1330 static void
 1331 NdisMQueryAdapterResources(status, adapter, list, buflen)
 1332         ndis_status             *status;
 1333         ndis_handle             adapter;
 1334         ndis_resource_list      *list;
 1335         uint32_t                *buflen;
 1336 {
 1337         ndis_miniport_block     *block;
 1338         struct ndis_softc       *sc;
 1339         int                     rsclen;
 1340 
 1341         block = (ndis_miniport_block *)adapter;
 1342         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1343 
 1344         rsclen = sizeof(ndis_resource_list) +
 1345             (sizeof(cm_partial_resource_desc) * (sc->ndis_rescnt - 1));
 1346         if (*buflen < rsclen) {
 1347                 *buflen = rsclen;
 1348                 *status = NDIS_STATUS_INVALID_LENGTH;
 1349                 return;
 1350         }
 1351 
 1352         bcopy((char *)block->nmb_rlist, (char *)list, rsclen);
 1353         *status = NDIS_STATUS_SUCCESS;
 1354 
 1355         return;
 1356 }
 1357 
 1358 static ndis_status
 1359 NdisMRegisterIoPortRange(offset, adapter, port, numports)
 1360         void                    **offset;
 1361         ndis_handle             adapter;
 1362         uint32_t                port;
 1363         uint32_t                numports;
 1364 {
 1365         struct ndis_miniport_block      *block;
 1366         struct ndis_softc       *sc;
 1367 
 1368         if (adapter == NULL)
 1369                 return(NDIS_STATUS_FAILURE);
 1370 
 1371         block = (ndis_miniport_block *)adapter;
 1372         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1373 
 1374         if (sc->ndis_res_io == NULL)
 1375                 return(NDIS_STATUS_FAILURE);
 1376 
 1377         /* Don't let the device map more ports than we have. */
 1378         if (rman_get_size(sc->ndis_res_io) < numports)
 1379                 return(NDIS_STATUS_INVALID_LENGTH);
 1380 
 1381         *offset = (void *)rman_get_start(sc->ndis_res_io);
 1382 
 1383         return(NDIS_STATUS_SUCCESS);
 1384 }
 1385 
 1386 static void
 1387 NdisMDeregisterIoPortRange(adapter, port, numports, offset)
 1388         ndis_handle             adapter;
 1389         uint32_t                port;
 1390         uint32_t                numports;
 1391         void                    *offset;
 1392 {
 1393         return;
 1394 }
 1395 
 1396 static void
 1397 NdisReadNetworkAddress(status, addr, addrlen, adapter)
 1398         ndis_status             *status;
 1399         void                    **addr;
 1400         uint32_t                *addrlen;
 1401         ndis_handle             adapter;
 1402 {
 1403         struct ndis_softc       *sc;
 1404         ndis_miniport_block     *block;
 1405         uint8_t                 empty[] = { 0, 0, 0, 0, 0, 0 };
 1406 
 1407         block = (ndis_miniport_block *)adapter;
 1408         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1409 
 1410 #ifdef IFP2ENADDR
 1411         if (bcmp(IFP2ENADDR(sc->ifp), empty, ETHER_ADDR_LEN) == 0)
 1412 #elif __FreeBSD_version >= 700000
 1413         if (sc->ifp->if_addr == NULL ||
 1414             bcmp(IF_LLADDR(sc->ifp), empty, ETHER_ADDR_LEN) == 0)
 1415 #else
 1416         if (bcmp(sc->arpcom.ac_enaddr, empty, ETHER_ADDR_LEN) == 0)
 1417 #endif
 1418                 *status = NDIS_STATUS_FAILURE;
 1419         else {
 1420 #ifdef IFP2ENADDR
 1421                 *addr = IFP2ENADDR(sc->ifp);
 1422 #elif __FreeBSD_version >= 700000
 1423                 *addr = IF_LLADDR(sc->ifp);
 1424 #else
 1425                 *addr = sc->arpcom.ac_enaddr;
 1426 #endif
 1427                 *addrlen = ETHER_ADDR_LEN;
 1428                 *status = NDIS_STATUS_SUCCESS;
 1429         }
 1430 
 1431         return;
 1432 }
 1433 
 1434 static ndis_status
 1435 NdisQueryMapRegisterCount(bustype, cnt)
 1436         uint32_t                bustype;
 1437         uint32_t                *cnt;
 1438 {
 1439         *cnt = 8192;
 1440         return(NDIS_STATUS_SUCCESS);
 1441 }
 1442 
 1443 static ndis_status
 1444 NdisMAllocateMapRegisters(adapter, dmachannel, dmasize, physmapneeded, maxmap)
 1445         ndis_handle             adapter;
 1446         uint32_t                dmachannel;
 1447         uint8_t                 dmasize;
 1448         uint32_t                physmapneeded;
 1449         uint32_t                maxmap;
 1450 {
 1451         struct ndis_softc       *sc;
 1452         ndis_miniport_block     *block;
 1453         int                     error, i, nseg = NDIS_MAXSEG;
 1454 
 1455         block = (ndis_miniport_block *)adapter;
 1456         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1457 
 1458         sc->ndis_mmaps = malloc(sizeof(bus_dmamap_t) * physmapneeded,
 1459             M_DEVBUF, M_NOWAIT|M_ZERO);
 1460 
 1461         if (sc->ndis_mmaps == NULL)
 1462                 return(NDIS_STATUS_RESOURCES);
 1463 
 1464         error = bus_dma_tag_create(sc->ndis_parent_tag, ETHER_ALIGN, 0,
 1465             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL,
 1466             NULL, maxmap * nseg, nseg, maxmap, BUS_DMA_ALLOCNOW,
 1467             NULL, NULL, &sc->ndis_mtag);
 1468 
 1469         if (error) {
 1470                 free(sc->ndis_mmaps, M_DEVBUF);
 1471                 return(NDIS_STATUS_RESOURCES);
 1472         }
 1473 
 1474         for (i = 0; i < physmapneeded; i++)
 1475                 bus_dmamap_create(sc->ndis_mtag, 0, &sc->ndis_mmaps[i]);
 1476 
 1477         sc->ndis_mmapcnt = physmapneeded;
 1478 
 1479         return(NDIS_STATUS_SUCCESS);
 1480 }
 1481 
 1482 static void
 1483 NdisMFreeMapRegisters(adapter)
 1484         ndis_handle             adapter;
 1485 {
 1486         struct ndis_softc       *sc;
 1487         ndis_miniport_block     *block;
 1488         int                     i;
 1489 
 1490         block = (ndis_miniport_block *)adapter;
 1491         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1492 
 1493         for (i = 0; i < sc->ndis_mmapcnt; i++)
 1494                 bus_dmamap_destroy(sc->ndis_mtag, sc->ndis_mmaps[i]);
 1495 
 1496         free(sc->ndis_mmaps, M_DEVBUF);
 1497 
 1498         bus_dma_tag_destroy(sc->ndis_mtag);
 1499 
 1500         return;
 1501 }
 1502 
 1503 static void
 1504 ndis_mapshared_cb(arg, segs, nseg, error)
 1505         void                    *arg;
 1506         bus_dma_segment_t       *segs;
 1507         int                     nseg;
 1508         int                     error;
 1509 {
 1510         ndis_physaddr           *p;
 1511 
 1512         if (error || nseg > 1)
 1513                 return;
 1514 
 1515         p = arg;
 1516 
 1517         p->np_quad = segs[0].ds_addr;
 1518 
 1519         return;
 1520 }
 1521 
 1522 /*
 1523  * This maps to bus_dmamem_alloc().
 1524  */
 1525 
 1526 static void
 1527 NdisMAllocateSharedMemory(adapter, len, cached, vaddr, paddr)
 1528         ndis_handle             adapter;
 1529         uint32_t                len;
 1530         uint8_t                 cached;
 1531         void                    **vaddr;
 1532         ndis_physaddr           *paddr;
 1533 {
 1534         ndis_miniport_block     *block;
 1535         struct ndis_softc       *sc;
 1536         struct ndis_shmem       *sh;
 1537         int                     error;
 1538 
 1539         if (adapter == NULL)
 1540                 return;
 1541 
 1542         block = (ndis_miniport_block *)adapter;
 1543         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1544 
 1545         sh = malloc(sizeof(struct ndis_shmem), M_DEVBUF, M_NOWAIT|M_ZERO);
 1546         if (sh == NULL)
 1547                 return;
 1548 
 1549         InitializeListHead(&sh->ndis_list);
 1550 
 1551         /*
 1552          * When performing shared memory allocations, create a tag
 1553          * with a lowaddr limit that restricts physical memory mappings
 1554          * so that they all fall within the first 1GB of memory.
 1555          * At least one device/driver combination (Linksys Instant
 1556          * Wireless PCI Card V2.7, Broadcom 802.11b) seems to have
 1557          * problems with performing DMA operations with physical
 1558          * addresses that lie above the 1GB mark. I don't know if this
 1559          * is a hardware limitation or if the addresses are being
 1560          * truncated within the driver, but this seems to be the only
 1561          * way to make these cards work reliably in systems with more
 1562          * than 1GB of physical memory.
 1563          */
 1564 
 1565         error = bus_dma_tag_create(sc->ndis_parent_tag, 64,
 1566             0, NDIS_BUS_SPACE_SHARED_MAXADDR, BUS_SPACE_MAXADDR, NULL,
 1567             NULL, len, 1, len, BUS_DMA_ALLOCNOW, NULL, NULL,
 1568             &sh->ndis_stag);
 1569 
 1570         if (error) {
 1571                 free(sh, M_DEVBUF);
 1572                 return;
 1573         }
 1574 
 1575         error = bus_dmamem_alloc(sh->ndis_stag, vaddr,
 1576             BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sh->ndis_smap);
 1577 
 1578         if (error) {
 1579                 bus_dma_tag_destroy(sh->ndis_stag);
 1580                 free(sh, M_DEVBUF);
 1581                 return;
 1582         }
 1583 
 1584         error = bus_dmamap_load(sh->ndis_stag, sh->ndis_smap, *vaddr,
 1585             len, ndis_mapshared_cb, (void *)paddr, BUS_DMA_NOWAIT);
 1586 
 1587         if (error) {
 1588                 bus_dmamem_free(sh->ndis_stag, *vaddr, sh->ndis_smap);
 1589                 bus_dma_tag_destroy(sh->ndis_stag);
 1590                 free(sh, M_DEVBUF);
 1591                 return;
 1592         }
 1593 
 1594         /*
 1595          * Save the physical address along with the source address.
 1596          * The AirGo MIMO driver will call NdisMFreeSharedMemory()
 1597          * with a bogus virtual address sometimes, but with a valid
 1598          * physical address. To keep this from causing trouble, we
 1599          * use the physical address to as a sanity check in case
 1600          * searching based on the virtual address fails.
 1601          */
 1602 
 1603         NDIS_LOCK(sc);
 1604         sh->ndis_paddr.np_quad = paddr->np_quad;
 1605         sh->ndis_saddr = *vaddr;
 1606         InsertHeadList((&sc->ndis_shlist), (&sh->ndis_list));
 1607         NDIS_UNLOCK(sc);
 1608 
 1609         return;
 1610 }
 1611 
 1612 struct ndis_allocwork {
 1613         uint32_t                na_len;
 1614         uint8_t                 na_cached;
 1615         void                    *na_ctx;
 1616         io_workitem             *na_iw;
 1617 };
 1618 
 1619 static void
 1620 ndis_asyncmem_complete(dobj, arg)
 1621         device_object           *dobj;
 1622         void                    *arg;
 1623 {
 1624         ndis_miniport_block     *block;
 1625         struct ndis_softc       *sc;
 1626         struct ndis_allocwork   *w;
 1627         void                    *vaddr;
 1628         ndis_physaddr           paddr;
 1629         ndis_allocdone_handler  donefunc;
 1630 
 1631         w = arg;
 1632         block = (ndis_miniport_block *)dobj->do_devext;
 1633         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1634 
 1635         vaddr = NULL;
 1636         paddr.np_quad = 0;
 1637 
 1638         donefunc = sc->ndis_chars->nmc_allocate_complete_func;
 1639         NdisMAllocateSharedMemory(block, w->na_len,
 1640             w->na_cached, &vaddr, &paddr);
 1641         MSCALL5(donefunc, block, vaddr, &paddr, w->na_len, w->na_ctx);
 1642 
 1643         IoFreeWorkItem(w->na_iw);
 1644         free(w, M_DEVBUF);
 1645 
 1646         return;
 1647 }
 1648 
 1649 static ndis_status
 1650 NdisMAllocateSharedMemoryAsync(adapter, len, cached, ctx)
 1651         ndis_handle             adapter;
 1652         uint32_t                len;
 1653         uint8_t                 cached;
 1654         void                    *ctx;
 1655 {
 1656         ndis_miniport_block     *block;
 1657         struct ndis_allocwork   *w;
 1658         io_workitem             *iw;
 1659         io_workitem_func        ifw;
 1660 
 1661         if (adapter == NULL)
 1662                 return(NDIS_STATUS_FAILURE);
 1663 
 1664         block = adapter;
 1665 
 1666         iw = IoAllocateWorkItem(block->nmb_deviceobj);
 1667         if (iw == NULL)
 1668                 return(NDIS_STATUS_FAILURE);
 1669 
 1670         w = malloc(sizeof(struct ndis_allocwork), M_TEMP, M_NOWAIT);
 1671 
 1672         if (w == NULL)
 1673                 return(NDIS_STATUS_FAILURE);
 1674 
 1675         w->na_cached = cached;
 1676         w->na_len = len;
 1677         w->na_ctx = ctx;
 1678         w->na_iw = iw;
 1679 
 1680         ifw = (io_workitem_func)ndis_findwrap((funcptr)ndis_asyncmem_complete);
 1681         IoQueueWorkItem(iw, ifw, WORKQUEUE_DELAYED, w);
 1682 
 1683         return(NDIS_STATUS_PENDING);
 1684 }
 1685 
 1686 static void
 1687 NdisMFreeSharedMemory(adapter, len, cached, vaddr, paddr)
 1688         ndis_handle             adapter;
 1689         uint32_t                len;
 1690         uint8_t                 cached;
 1691         void                    *vaddr;
 1692         ndis_physaddr           paddr;
 1693 {
 1694         ndis_miniport_block     *block;
 1695         struct ndis_softc       *sc;
 1696         struct ndis_shmem       *sh = NULL;
 1697         list_entry              *l;
 1698 
 1699         if (vaddr == NULL || adapter == NULL)
 1700                 return;
 1701 
 1702         block = (ndis_miniport_block *)adapter;
 1703         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1704 
 1705         /* Sanity check: is list empty? */
 1706 
 1707         if (IsListEmpty(&sc->ndis_shlist))
 1708                 return;
 1709 
 1710         NDIS_LOCK(sc);
 1711         l = sc->ndis_shlist.nle_flink;
 1712         while (l != &sc->ndis_shlist) {
 1713                 sh = CONTAINING_RECORD(l, struct ndis_shmem, ndis_list);
 1714                 if (sh->ndis_saddr == vaddr)
 1715                         break;
 1716                 /*
 1717                  * Check the physaddr too, just in case the driver lied
 1718                  * about the virtual address.
 1719                  */
 1720                 if (sh->ndis_paddr.np_quad == paddr.np_quad)
 1721                         break;
 1722                 l = l->nle_flink;
 1723         }
 1724 
 1725         if (sh == NULL) {
 1726                 NDIS_UNLOCK(sc);
 1727                 printf("NDIS: buggy driver tried to free "
 1728                     "invalid shared memory: vaddr: %p paddr: 0x%jx\n",
 1729                     vaddr, (uintmax_t)paddr.np_quad);
 1730                 return;
 1731         }
 1732 
 1733         RemoveEntryList(&sh->ndis_list);
 1734 
 1735         NDIS_UNLOCK(sc);
 1736 
 1737         bus_dmamap_unload(sh->ndis_stag, sh->ndis_smap);
 1738         bus_dmamem_free(sh->ndis_stag, sh->ndis_saddr, sh->ndis_smap);
 1739         bus_dma_tag_destroy(sh->ndis_stag);
 1740 
 1741         free(sh, M_DEVBUF);
 1742 
 1743         return;
 1744 }
 1745 
 1746 static ndis_status
 1747 NdisMMapIoSpace(vaddr, adapter, paddr, len)
 1748         void                    **vaddr;
 1749         ndis_handle             adapter;
 1750         ndis_physaddr           paddr;
 1751         uint32_t                len;
 1752 {
 1753         if (adapter == NULL)
 1754                 return(NDIS_STATUS_FAILURE);
 1755 
 1756         *vaddr = MmMapIoSpace(paddr.np_quad, len, 0);
 1757 
 1758         if (*vaddr == NULL)
 1759                 return(NDIS_STATUS_FAILURE);
 1760 
 1761         return(NDIS_STATUS_SUCCESS);
 1762 }
 1763 
 1764 static void
 1765 NdisMUnmapIoSpace(adapter, vaddr, len)
 1766         ndis_handle             adapter;
 1767         void                    *vaddr;
 1768         uint32_t                len;
 1769 {
 1770         MmUnmapIoSpace(vaddr, len);
 1771         return;
 1772 }
 1773 
 1774 static uint32_t
 1775 NdisGetCacheFillSize(void)
 1776 {
 1777         return(128);
 1778 }
 1779 
 1780 static uint32_t
 1781 NdisMGetDmaAlignment(handle)
 1782         ndis_handle             handle;
 1783 {
 1784         return(16);
 1785 }
 1786 
 1787 /*
 1788  * NDIS has two methods for dealing with NICs that support DMA.
 1789  * One is to just pass packets to the driver and let it call
 1790  * NdisMStartBufferPhysicalMapping() to map each buffer in the packet
 1791  * all by itself, and the other is to let the NDIS library handle the
 1792  * buffer mapping internally, and hand the driver an already populated
 1793  * scatter/gather fragment list. If the driver calls
 1794  * NdisMInitializeScatterGatherDma(), it wants to use the latter
 1795  * method.
 1796  */
 1797 
 1798 static ndis_status
 1799 NdisMInitializeScatterGatherDma(adapter, is64, maxphysmap)
 1800         ndis_handle             adapter;
 1801         uint8_t                 is64;
 1802         uint32_t                maxphysmap;
 1803 {
 1804         struct ndis_softc       *sc;
 1805         ndis_miniport_block     *block;
 1806         int                     error;
 1807 
 1808         if (adapter == NULL)
 1809                 return(NDIS_STATUS_FAILURE);
 1810         block = (ndis_miniport_block *)adapter;
 1811         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 1812 
 1813         /* Don't do this twice. */
 1814         if (sc->ndis_sc == 1)
 1815                 return(NDIS_STATUS_SUCCESS);
 1816 
 1817         error = bus_dma_tag_create(sc->ndis_parent_tag, ETHER_ALIGN, 0,
 1818             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
 1819             MCLBYTES * NDIS_MAXSEG, NDIS_MAXSEG, MCLBYTES, BUS_DMA_ALLOCNOW,
 1820             NULL, NULL, &sc->ndis_ttag);
 1821 
 1822         sc->ndis_sc = 1;
 1823 
 1824         return(NDIS_STATUS_SUCCESS);
 1825 }
 1826 
 1827 void
 1828 NdisAllocatePacketPool(status, pool, descnum, protrsvdlen)
 1829         ndis_status             *status;
 1830         ndis_handle             *pool;
 1831         uint32_t                descnum;
 1832         uint32_t                protrsvdlen;
 1833 {
 1834         ndis_packet_pool        *p;
 1835         ndis_packet             *packets;
 1836         int                     i;
 1837 
 1838         p = ExAllocatePoolWithTag(NonPagedPool, sizeof(ndis_packet_pool), 0);
 1839         if (p == NULL) {
 1840                 *status = NDIS_STATUS_RESOURCES;
 1841                 return;
 1842         }
 1843 
 1844         p->np_cnt = descnum + NDIS_POOL_EXTRA;
 1845         p->np_protrsvd = protrsvdlen;
 1846         p->np_len = sizeof(ndis_packet) + protrsvdlen;
 1847 
 1848         packets = ExAllocatePoolWithTag(NonPagedPool, p->np_cnt *
 1849             p->np_len, 0);
 1850 
 1851 
 1852         if (packets == NULL) {
 1853                 ExFreePool(p);
 1854                 *status = NDIS_STATUS_RESOURCES;
 1855                 return;
 1856         }
 1857 
 1858         p->np_pktmem = packets;
 1859 
 1860         for (i = 0; i < p->np_cnt; i++)
 1861                 InterlockedPushEntrySList(&p->np_head,
 1862                     (struct slist_entry *)&packets[i]);
 1863 
 1864 #ifdef NDIS_DEBUG_PACKETS 
 1865         p->np_dead = 0; 
 1866         KeInitializeSpinLock(&p->np_lock);
 1867         KeInitializeEvent(&p->np_event, EVENT_TYPE_NOTIFY, TRUE);
 1868 #endif
 1869 
 1870         *pool = p; 
 1871         *status = NDIS_STATUS_SUCCESS;
 1872         return;
 1873 }
 1874 
 1875 void
 1876 NdisAllocatePacketPoolEx(status, pool, descnum, oflowdescnum, protrsvdlen)
 1877         ndis_status             *status;
 1878         ndis_handle             *pool;
 1879         uint32_t                descnum;
 1880         uint32_t                oflowdescnum;
 1881         uint32_t                protrsvdlen;
 1882 {
 1883         return(NdisAllocatePacketPool(status, pool,
 1884             descnum + oflowdescnum, protrsvdlen));
 1885 }
 1886 
 1887 uint32_t
 1888 NdisPacketPoolUsage(pool)
 1889         ndis_handle             pool;
 1890 {
 1891         ndis_packet_pool        *p;
 1892 
 1893         p = (ndis_packet_pool *)pool;
 1894         return(p->np_cnt - ExQueryDepthSList(&p->np_head));
 1895 }
 1896 
 1897 void
 1898 NdisFreePacketPool(pool)
 1899         ndis_handle             pool;
 1900 {
 1901         ndis_packet_pool        *p;
 1902         int                     usage;
 1903 #ifdef NDIS_DEBUG_PACKETS 
 1904         uint8_t                 irql;
 1905 #endif
 1906 
 1907         p = (ndis_packet_pool *)pool;
 1908 
 1909 #ifdef NDIS_DEBUG_PACKETS 
 1910         KeAcquireSpinLock(&p->np_lock, &irql);
 1911 #endif
 1912 
 1913         usage = NdisPacketPoolUsage(pool);
 1914 
 1915 #ifdef NDIS_DEBUG_PACKETS 
 1916         if (usage) {
 1917                 p->np_dead = 1;
 1918                 KeResetEvent(&p->np_event);
 1919                 KeReleaseSpinLock(&p->np_lock, irql);
 1920                 KeWaitForSingleObject(&p->np_event, 0, 0, FALSE, NULL);
 1921         } else
 1922                 KeReleaseSpinLock(&p->np_lock, irql);
 1923 #endif
 1924 
 1925         ExFreePool(p->np_pktmem);
 1926         ExFreePool(p);
 1927 
 1928         return;
 1929 }
 1930 
 1931 void
 1932 NdisAllocatePacket(status, packet, pool)
 1933         ndis_status             *status;
 1934         ndis_packet             **packet;
 1935         ndis_handle             pool;
 1936 {
 1937         ndis_packet_pool        *p;
 1938         ndis_packet             *pkt;
 1939 #ifdef NDIS_DEBUG_PACKETS 
 1940         uint8_t                 irql;
 1941 #endif
 1942 
 1943         p = (ndis_packet_pool *)pool;
 1944 
 1945 #ifdef NDIS_DEBUG_PACKETS 
 1946         KeAcquireSpinLock(&p->np_lock, &irql);
 1947         if (p->np_dead) {
 1948                 KeReleaseSpinLock(&p->np_lock, irql);
 1949                 printf("NDIS: tried to allocate packet from dead pool %p\n",
 1950                     pool);
 1951                 *status = NDIS_STATUS_RESOURCES;
 1952                 return;
 1953         }
 1954 #endif
 1955 
 1956         pkt = (ndis_packet *)InterlockedPopEntrySList(&p->np_head);
 1957 
 1958 #ifdef NDIS_DEBUG_PACKETS 
 1959         KeReleaseSpinLock(&p->np_lock, irql);
 1960 #endif
 1961 
 1962         if (pkt == NULL) {
 1963                 *status = NDIS_STATUS_RESOURCES;
 1964                 return;
 1965         }
 1966 
 1967 
 1968         bzero((char *)pkt, sizeof(ndis_packet));
 1969 
 1970         /* Save pointer to the pool. */
 1971         pkt->np_private.npp_pool = pool;
 1972 
 1973         /* Set the oob offset pointer. Lots of things expect this. */
 1974         pkt->np_private.npp_packetooboffset = offsetof(ndis_packet, np_oob);
 1975 
 1976         /*
 1977          * We must initialize the packet flags correctly in order
 1978          * for the NDIS_SET_PACKET_MEDIA_SPECIFIC_INFO() and
 1979          * NDIS_GET_PACKET_MEDIA_SPECIFIC_INFO() macros to work
 1980          * correctly.
 1981          */
 1982         pkt->np_private.npp_ndispktflags = NDIS_PACKET_ALLOCATED_BY_NDIS;
 1983         pkt->np_private.npp_validcounts = FALSE;
 1984 
 1985         *packet = pkt;
 1986 
 1987         *status = NDIS_STATUS_SUCCESS;
 1988 
 1989         return;
 1990 }
 1991 
 1992 void
 1993 NdisFreePacket(packet)
 1994         ndis_packet             *packet;
 1995 {
 1996         ndis_packet_pool        *p;
 1997 #ifdef NDIS_DEBUG_PACKETS 
 1998         uint8_t                 irql;
 1999 #endif
 2000 
 2001         p = (ndis_packet_pool *)packet->np_private.npp_pool;
 2002 
 2003 #ifdef NDIS_DEBUG_PACKETS 
 2004         KeAcquireSpinLock(&p->np_lock, &irql);
 2005 #endif
 2006 
 2007         InterlockedPushEntrySList(&p->np_head, (slist_entry *)packet);
 2008 
 2009 #ifdef NDIS_DEBUG_PACKETS 
 2010         if (p->np_dead) {
 2011                 if (ExQueryDepthSList(&p->np_head) == p->np_cnt)
 2012                         KeSetEvent(&p->np_event, IO_NO_INCREMENT, FALSE);
 2013         }
 2014         KeReleaseSpinLock(&p->np_lock, irql);
 2015 #endif
 2016 
 2017         return;
 2018 }
 2019 
 2020 static void
 2021 NdisUnchainBufferAtFront(packet, buf)
 2022         ndis_packet             *packet;
 2023         ndis_buffer             **buf;
 2024 {
 2025         ndis_packet_private     *priv;
 2026 
 2027         if (packet == NULL || buf == NULL)
 2028                 return;
 2029 
 2030         priv = &packet->np_private;
 2031 
 2032         priv->npp_validcounts = FALSE;
 2033 
 2034         if (priv->npp_head == priv->npp_tail) {
 2035                 *buf = priv->npp_head;
 2036                 priv->npp_head = priv->npp_tail = NULL;
 2037         } else {
 2038                 *buf = priv->npp_head;
 2039                 priv->npp_head = (*buf)->mdl_next;
 2040         }
 2041 
 2042         return;
 2043 }
 2044 
 2045 static void
 2046 NdisUnchainBufferAtBack(packet, buf)
 2047         ndis_packet             *packet;
 2048         ndis_buffer             **buf;
 2049 {
 2050         ndis_packet_private     *priv;
 2051         ndis_buffer             *tmp;
 2052 
 2053         if (packet == NULL || buf == NULL)
 2054                 return;
 2055 
 2056         priv = &packet->np_private;
 2057 
 2058         priv->npp_validcounts = FALSE;
 2059 
 2060         if (priv->npp_head == priv->npp_tail) {
 2061                 *buf = priv->npp_head;
 2062                 priv->npp_head = priv->npp_tail = NULL;
 2063         } else {
 2064                 *buf = priv->npp_tail;
 2065                 tmp = priv->npp_head;
 2066                 while (tmp->mdl_next != priv->npp_tail)
 2067                         tmp = tmp->mdl_next;
 2068                 priv->npp_tail = tmp;
 2069                 tmp->mdl_next = NULL;
 2070         }
 2071 
 2072         return;
 2073 }
 2074 
 2075 /*
 2076  * The NDIS "buffer" is really an MDL (memory descriptor list)
 2077  * which is used to describe a buffer in a way that allows it
 2078  * to mapped into different contexts. We have to be careful how
 2079  * we handle them: in some versions of Windows, the NdisFreeBuffer()
 2080  * routine is an actual function in the NDIS API, but in others
 2081  * it's just a macro wrapper around IoFreeMdl(). There's really
 2082  * no way to use the 'descnum' parameter to count how many
 2083  * "buffers" are allocated since in order to use IoFreeMdl() to
 2084  * dispose of a buffer, we have to use IoAllocateMdl() to allocate
 2085  * them, and IoAllocateMdl() just grabs them out of the heap.
 2086  */
 2087 
 2088 static void
 2089 NdisAllocateBufferPool(status, pool, descnum)
 2090         ndis_status             *status;
 2091         ndis_handle             *pool;
 2092         uint32_t                descnum;
 2093 {
 2094 
 2095         /*
 2096          * The only thing we can really do here is verify that descnum
 2097          * is a reasonable value, but I really don't know what to check
 2098          * it against.
 2099          */
 2100 
 2101         *pool = NonPagedPool;
 2102         *status = NDIS_STATUS_SUCCESS;
 2103         return;
 2104 }
 2105 
 2106 static void
 2107 NdisFreeBufferPool(pool)
 2108         ndis_handle             pool;
 2109 {
 2110         return;
 2111 }
 2112 
 2113 static void
 2114 NdisAllocateBuffer(status, buffer, pool, vaddr, len)
 2115         ndis_status             *status;
 2116         ndis_buffer             **buffer;
 2117         ndis_handle             pool;
 2118         void                    *vaddr;
 2119         uint32_t                len;
 2120 {
 2121         ndis_buffer             *buf;
 2122 
 2123         buf = IoAllocateMdl(vaddr, len, FALSE, FALSE, NULL);
 2124         if (buf == NULL) {
 2125                 *status = NDIS_STATUS_RESOURCES;
 2126                 return;
 2127         }
 2128 
 2129         MmBuildMdlForNonPagedPool(buf);
 2130 
 2131         *buffer = buf;
 2132         *status = NDIS_STATUS_SUCCESS;
 2133 
 2134         return;
 2135 }
 2136 
 2137 static void
 2138 NdisFreeBuffer(buf)
 2139         ndis_buffer             *buf;
 2140 {
 2141         IoFreeMdl(buf);
 2142         return;
 2143 }
 2144 
 2145 /* Aw c'mon. */
 2146 
 2147 static uint32_t
 2148 NdisBufferLength(buf)
 2149         ndis_buffer             *buf;
 2150 {
 2151         return(MmGetMdlByteCount(buf));
 2152 }
 2153 
 2154 /*
 2155  * Get the virtual address and length of a buffer.
 2156  * Note: the vaddr argument is optional.
 2157  */
 2158 
 2159 static void
 2160 NdisQueryBuffer(buf, vaddr, len)
 2161         ndis_buffer             *buf;
 2162         void                    **vaddr;
 2163         uint32_t                *len;
 2164 {
 2165         if (vaddr != NULL)
 2166                 *vaddr = MmGetMdlVirtualAddress(buf);
 2167         *len = MmGetMdlByteCount(buf);
 2168 
 2169         return;
 2170 }
 2171 
 2172 /* Same as above -- we don't care about the priority. */
 2173 
 2174 static void
 2175 NdisQueryBufferSafe(buf, vaddr, len, prio)
 2176         ndis_buffer             *buf;
 2177         void                    **vaddr;
 2178         uint32_t                *len;
 2179         uint32_t                prio;
 2180 {
 2181         if (vaddr != NULL)
 2182                 *vaddr = MmGetMdlVirtualAddress(buf);
 2183         *len = MmGetMdlByteCount(buf);
 2184 
 2185         return;
 2186 }
 2187 
 2188 /* Damnit Microsoft!! How many ways can you do the same thing?! */
 2189 
 2190 static void *
 2191 NdisBufferVirtualAddress(buf)
 2192         ndis_buffer             *buf;
 2193 {
 2194         return(MmGetMdlVirtualAddress(buf));
 2195 }
 2196 
 2197 static void *
 2198 NdisBufferVirtualAddressSafe(buf, prio)
 2199         ndis_buffer             *buf;
 2200         uint32_t                prio;
 2201 {
 2202         return(MmGetMdlVirtualAddress(buf));
 2203 }
 2204 
 2205 static void
 2206 NdisAdjustBufferLength(buf, len)
 2207         ndis_buffer             *buf;
 2208         int                     len;
 2209 {
 2210         MmGetMdlByteCount(buf) = len;
 2211 
 2212         return;
 2213 }
 2214 
 2215 static uint32_t
 2216 NdisInterlockedIncrement(addend)
 2217         uint32_t                *addend;
 2218 {
 2219         atomic_add_long((u_long *)addend, 1);
 2220         return(*addend);
 2221 }
 2222 
 2223 static uint32_t
 2224 NdisInterlockedDecrement(addend)
 2225         uint32_t                *addend;
 2226 {
 2227         atomic_subtract_long((u_long *)addend, 1);
 2228         return(*addend);
 2229 }
 2230 
 2231 static void
 2232 NdisInitializeEvent(event)
 2233         ndis_event              *event;
 2234 {
 2235         /*
 2236          * NDIS events are always notification
 2237          * events, and should be initialized to the
 2238          * not signaled state.
 2239          */
 2240         KeInitializeEvent(&event->ne_event, EVENT_TYPE_NOTIFY, FALSE);
 2241         return;
 2242 }
 2243 
 2244 static void
 2245 NdisSetEvent(event)
 2246         ndis_event              *event;
 2247 {
 2248         KeSetEvent(&event->ne_event, IO_NO_INCREMENT, FALSE);
 2249         return;
 2250 }
 2251 
 2252 static void
 2253 NdisResetEvent(event)
 2254         ndis_event              *event;
 2255 {
 2256         KeResetEvent(&event->ne_event);
 2257         return;
 2258 }
 2259 
 2260 static uint8_t
 2261 NdisWaitEvent(event, msecs)
 2262         ndis_event              *event;
 2263         uint32_t                msecs;
 2264 {
 2265         int64_t                 duetime;
 2266         uint32_t                rval;
 2267 
 2268         duetime = ((int64_t)msecs * -10000);
 2269         rval = KeWaitForSingleObject(event,
 2270             0, 0, TRUE, msecs ? & duetime : NULL);
 2271 
 2272         if (rval == STATUS_TIMEOUT)
 2273                 return(FALSE);
 2274 
 2275         return(TRUE);
 2276 }
 2277 
 2278 static ndis_status
 2279 NdisUnicodeStringToAnsiString(dstr, sstr)
 2280         ansi_string             *dstr;
 2281         unicode_string          *sstr;
 2282 {
 2283         uint32_t                rval;
 2284 
 2285         rval = RtlUnicodeStringToAnsiString(dstr, sstr, FALSE);
 2286 
 2287         if (rval == STATUS_INSUFFICIENT_RESOURCES)
 2288                 return(NDIS_STATUS_RESOURCES);
 2289         if (rval)
 2290                 return(NDIS_STATUS_FAILURE);
 2291 
 2292         return (NDIS_STATUS_SUCCESS);
 2293 }
 2294 
 2295 static ndis_status
 2296 NdisAnsiStringToUnicodeString(dstr, sstr)
 2297         unicode_string          *dstr;
 2298         ansi_string             *sstr;
 2299 {
 2300         uint32_t                rval;
 2301 
 2302         rval = RtlAnsiStringToUnicodeString(dstr, sstr, FALSE);
 2303 
 2304         if (rval == STATUS_INSUFFICIENT_RESOURCES)
 2305                 return(NDIS_STATUS_RESOURCES);
 2306         if (rval)
 2307                 return(NDIS_STATUS_FAILURE);
 2308 
 2309         return (NDIS_STATUS_SUCCESS);
 2310 }
 2311 
 2312 static ndis_status
 2313 NdisMPciAssignResources(adapter, slot, list)
 2314         ndis_handle             adapter;
 2315         uint32_t                slot;
 2316         ndis_resource_list      **list;
 2317 {
 2318         ndis_miniport_block     *block;
 2319 
 2320         if (adapter == NULL || list == NULL)
 2321                 return (NDIS_STATUS_FAILURE);
 2322 
 2323         block = (ndis_miniport_block *)adapter;
 2324         *list = block->nmb_rlist;
 2325 
 2326         return (NDIS_STATUS_SUCCESS);
 2327 }
 2328 
 2329 static uint8_t
 2330 ndis_intr(iobj, arg)
 2331         kinterrupt              *iobj;
 2332         void                    *arg;
 2333 {
 2334         struct ndis_softc       *sc;
 2335         uint8_t                 is_our_intr = FALSE;
 2336         int                     call_isr = 0;
 2337         ndis_miniport_interrupt *intr;
 2338 
 2339         sc = arg;
 2340         intr = sc->ndis_block->nmb_interrupt;
 2341 
 2342         if (intr == NULL || sc->ndis_block->nmb_miniportadapterctx == NULL)
 2343                 return(FALSE);
 2344 
 2345         if (sc->ndis_block->nmb_interrupt->ni_isrreq == TRUE)
 2346                 MSCALL3(intr->ni_isrfunc, &is_our_intr, &call_isr,
 2347                     sc->ndis_block->nmb_miniportadapterctx);
 2348         else {
 2349                 MSCALL1(sc->ndis_chars->nmc_disable_interrupts_func,
 2350                     sc->ndis_block->nmb_miniportadapterctx);
 2351                 call_isr = 1;
 2352         }
 2353  
 2354         if (call_isr)
 2355                 IoRequestDpc(sc->ndis_block->nmb_deviceobj, NULL, sc);
 2356 
 2357         return(is_our_intr);
 2358 }
 2359 
 2360 static void
 2361 ndis_intrhand(dpc, intr, sysarg1, sysarg2)
 2362         kdpc                    *dpc;
 2363         ndis_miniport_interrupt *intr;
 2364         void                    *sysarg1;
 2365         void                    *sysarg2;
 2366 {
 2367         struct ndis_softc       *sc;
 2368         ndis_miniport_block     *block;
 2369         ndis_handle             adapter;
 2370 
 2371         block = intr->ni_block;
 2372         adapter = block->nmb_miniportadapterctx;
 2373         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 2374 
 2375         if (NDIS_SERIALIZED(sc->ndis_block))
 2376                 KeAcquireSpinLockAtDpcLevel(&block->nmb_lock);
 2377 
 2378         MSCALL1(intr->ni_dpcfunc, adapter);
 2379 
 2380         /* If there's a MiniportEnableInterrupt() routine, call it. */
 2381 
 2382         if (sc->ndis_chars->nmc_enable_interrupts_func != NULL)
 2383                 MSCALL1(sc->ndis_chars->nmc_enable_interrupts_func, adapter);
 2384 
 2385         if (NDIS_SERIALIZED(sc->ndis_block))
 2386                 KeReleaseSpinLockFromDpcLevel(&block->nmb_lock);
 2387 
 2388         /*
 2389          * Set the completion event if we've drained all
 2390          * pending interrupts.
 2391          */
 2392 
 2393         KeAcquireSpinLockAtDpcLevel(&intr->ni_dpccountlock);
 2394         intr->ni_dpccnt--;
 2395         if (intr->ni_dpccnt == 0)
 2396                 KeSetEvent(&intr->ni_dpcevt, IO_NO_INCREMENT, FALSE);
 2397         KeReleaseSpinLockFromDpcLevel(&intr->ni_dpccountlock);
 2398 
 2399         return;
 2400 }
 2401 
 2402 static ndis_status
 2403 NdisMRegisterInterrupt(intr, adapter, ivec, ilevel, reqisr, shared, imode)
 2404         ndis_miniport_interrupt *intr;
 2405         ndis_handle             adapter;
 2406         uint32_t                ivec;
 2407         uint32_t                ilevel;
 2408         uint8_t                 reqisr;
 2409         uint8_t                 shared;
 2410         ndis_interrupt_mode     imode;
 2411 {
 2412         ndis_miniport_block     *block;
 2413         ndis_miniport_characteristics *ch;
 2414         struct ndis_softc       *sc;
 2415         int                     error;
 2416 
 2417         block = adapter;
 2418         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 2419         ch = IoGetDriverObjectExtension(block->nmb_deviceobj->do_drvobj,
 2420             (void *)1);
 2421 
 2422         intr->ni_rsvd = ExAllocatePoolWithTag(NonPagedPool,
 2423             sizeof(struct mtx), 0);
 2424         if (intr->ni_rsvd == NULL)
 2425                 return(NDIS_STATUS_RESOURCES);
 2426 
 2427         intr->ni_block = adapter;
 2428         intr->ni_isrreq = reqisr;
 2429         intr->ni_shared = shared;
 2430         intr->ni_dpccnt = 0;
 2431         intr->ni_isrfunc = ch->nmc_isr_func;
 2432         intr->ni_dpcfunc = ch->nmc_interrupt_func;
 2433 
 2434         KeInitializeEvent(&intr->ni_dpcevt, EVENT_TYPE_NOTIFY, TRUE);
 2435         KeInitializeDpc(&intr->ni_dpc,
 2436             ndis_findwrap((funcptr)ndis_intrhand), intr);
 2437         KeSetImportanceDpc(&intr->ni_dpc, KDPC_IMPORTANCE_LOW);
 2438 
 2439         error = IoConnectInterrupt(&intr->ni_introbj,
 2440             ndis_findwrap((funcptr)ndis_intr), sc, NULL,
 2441             ivec, ilevel, 0, imode, shared, 0, FALSE);
 2442 
 2443         if (error != STATUS_SUCCESS)
 2444                 return(NDIS_STATUS_FAILURE);
 2445 
 2446         block->nmb_interrupt = intr;
 2447 
 2448         return(NDIS_STATUS_SUCCESS);
 2449 }       
 2450 
 2451 static void
 2452 NdisMDeregisterInterrupt(intr)
 2453         ndis_miniport_interrupt *intr;
 2454 {
 2455         ndis_miniport_block     *block;
 2456         struct ndis_softc       *sc;
 2457         uint8_t                 irql;
 2458 
 2459         block = intr->ni_block;
 2460         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 2461 
 2462         /* Should really be KeSynchronizeExecution() */
 2463 
 2464         KeAcquireSpinLock(intr->ni_introbj->ki_lock, &irql);
 2465         block->nmb_interrupt = NULL;
 2466         KeReleaseSpinLock(intr->ni_introbj->ki_lock, irql);
 2467 /*
 2468         KeFlushQueuedDpcs();
 2469 */
 2470         /* Disconnect our ISR */
 2471 
 2472         IoDisconnectInterrupt(intr->ni_introbj);
 2473 
 2474         KeWaitForSingleObject(&intr->ni_dpcevt, 0, 0, FALSE, NULL);
 2475         KeResetEvent(&intr->ni_dpcevt);
 2476 
 2477         return;
 2478 }
 2479 
 2480 static void
 2481 NdisMRegisterAdapterShutdownHandler(adapter, shutdownctx, shutdownfunc)
 2482         ndis_handle             adapter;
 2483         void                    *shutdownctx;
 2484         ndis_shutdown_handler   shutdownfunc;
 2485 {
 2486         ndis_miniport_block     *block;
 2487         ndis_miniport_characteristics *chars;
 2488         struct ndis_softc       *sc;
 2489 
 2490         if (adapter == NULL)
 2491                 return;
 2492 
 2493         block = (ndis_miniport_block *)adapter;
 2494         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 2495         chars = sc->ndis_chars;
 2496 
 2497         chars->nmc_shutdown_handler = shutdownfunc;
 2498         chars->nmc_rsvd0 = shutdownctx;
 2499 
 2500         return;
 2501 }
 2502 
 2503 static void
 2504 NdisMDeregisterAdapterShutdownHandler(adapter)
 2505         ndis_handle             adapter;
 2506 {
 2507         ndis_miniport_block     *block;
 2508         ndis_miniport_characteristics *chars;
 2509         struct ndis_softc       *sc;
 2510 
 2511         if (adapter == NULL)
 2512                 return;
 2513 
 2514         block = (ndis_miniport_block *)adapter;
 2515         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 2516         chars = sc->ndis_chars;
 2517 
 2518         chars->nmc_shutdown_handler = NULL;
 2519         chars->nmc_rsvd0 = NULL;
 2520 
 2521         return;
 2522 }
 2523 
 2524 static uint32_t
 2525 NDIS_BUFFER_TO_SPAN_PAGES(buf)
 2526         ndis_buffer             *buf;
 2527 {
 2528         if (buf == NULL)
 2529                 return(0);
 2530         if (MmGetMdlByteCount(buf) == 0)
 2531                 return(1);
 2532         return(SPAN_PAGES(MmGetMdlVirtualAddress(buf),
 2533             MmGetMdlByteCount(buf)));
 2534 }
 2535 
 2536 static void
 2537 NdisGetBufferPhysicalArraySize(buf, pages)
 2538         ndis_buffer             *buf;
 2539         uint32_t                *pages;
 2540 {
 2541         if (buf == NULL)
 2542                 return;
 2543 
 2544         *pages = NDIS_BUFFER_TO_SPAN_PAGES(buf);
 2545         return;
 2546 }
 2547 
 2548 static void
 2549 NdisQueryBufferOffset(buf, off, len)
 2550         ndis_buffer             *buf;
 2551         uint32_t                *off;
 2552         uint32_t                *len;
 2553 {
 2554         if (buf == NULL)
 2555                 return;
 2556 
 2557         *off = MmGetMdlByteOffset(buf);
 2558         *len = MmGetMdlByteCount(buf);
 2559 
 2560         return;
 2561 }
 2562 
 2563 void
 2564 NdisMSleep(usecs)
 2565         uint32_t                usecs;
 2566 {
 2567         ktimer                  timer;
 2568 
 2569         /*
 2570          * During system bootstrap, (i.e. cold == 1), we aren't
 2571          * allowed to sleep, so we have to do a hard DELAY()
 2572          * instead.
 2573          */
 2574 
 2575         if (cold)
 2576                 DELAY(usecs);
 2577         else {
 2578                 KeInitializeTimer(&timer);
 2579                 KeSetTimer(&timer, ((int64_t)usecs * -10), NULL);
 2580                 KeWaitForSingleObject(&timer, 0, 0, FALSE, NULL);
 2581         }
 2582 
 2583         return;
 2584 }
 2585 
 2586 static uint32_t
 2587 NdisReadPcmciaAttributeMemory(handle, offset, buf, len)
 2588         ndis_handle             handle;
 2589         uint32_t                offset;
 2590         void                    *buf;
 2591         uint32_t                len;
 2592 {
 2593         struct ndis_softc       *sc;
 2594         ndis_miniport_block     *block;
 2595         bus_space_handle_t      bh;
 2596         bus_space_tag_t         bt;
 2597         char                    *dest;
 2598         int                     i;
 2599 
 2600         if (handle == NULL)
 2601                 return(0);
 2602 
 2603         block = (ndis_miniport_block *)handle;
 2604         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 2605         dest = buf;
 2606 
 2607         bh = rman_get_bushandle(sc->ndis_res_am);
 2608         bt = rman_get_bustag(sc->ndis_res_am);
 2609 
 2610         for (i = 0; i < len; i++)
 2611                 dest[i] = bus_space_read_1(bt, bh, (offset + i) * 2);
 2612 
 2613         return(i);
 2614 }
 2615 
 2616 static uint32_t
 2617 NdisWritePcmciaAttributeMemory(handle, offset, buf, len)
 2618         ndis_handle             handle;
 2619         uint32_t                offset;
 2620         void                    *buf;
 2621         uint32_t                len;
 2622 {
 2623         struct ndis_softc       *sc;
 2624         ndis_miniport_block     *block;
 2625         bus_space_handle_t      bh;
 2626         bus_space_tag_t         bt;
 2627         char                    *src;
 2628         int                     i;
 2629 
 2630         if (handle == NULL)
 2631                 return(0);
 2632 
 2633         block = (ndis_miniport_block *)handle;
 2634         sc = device_get_softc(block->nmb_physdeviceobj->do_devext);
 2635         src = buf;
 2636 
 2637         bh = rman_get_bushandle(sc->ndis_res_am);
 2638         bt = rman_get_bustag(sc->ndis_res_am);
 2639 
 2640         for (i = 0; i < len; i++)
 2641                 bus_space_write_1(bt, bh, (offset + i) * 2, src[i]);
 2642 
 2643         return(i);
 2644 }
 2645 
 2646 static list_entry *
 2647 NdisInterlockedInsertHeadList(head, entry, lock)
 2648         list_entry              *head;
 2649         list_entry              *entry;
 2650         ndis_spin_lock          *lock;
 2651 {
 2652         list_entry              *flink;
 2653 
 2654         KeAcquireSpinLock(&lock->nsl_spinlock, &lock->nsl_kirql);
 2655         flink = head->nle_flink;
 2656         entry->nle_flink = flink;
 2657         entry->nle_blink = head;
 2658         flink->nle_blink = entry;
 2659         head->nle_flink = entry;
 2660         KeReleaseSpinLock(&lock->nsl_spinlock, lock->nsl_kirql);
 2661 
 2662         return(flink);
 2663 }
 2664 
 2665 static list_entry *
 2666 NdisInterlockedRemoveHeadList(head, lock)
 2667         list_entry              *head;
 2668         ndis_spin_lock          *lock;
 2669 {
 2670         list_entry              *flink;
 2671         list_entry              *entry;
 2672 
 2673         KeAcquireSpinLock(&lock->nsl_spinlock, &lock->nsl_kirql);
 2674         entry = head->nle_flink;
 2675         flink = entry->nle_flink;
 2676         head->nle_flink = flink;
 2677         flink->nle_blink = head;
 2678         KeReleaseSpinLock(&lock->nsl_spinlock, lock->nsl_kirql);
 2679 
 2680         return(entry);
 2681 }
 2682 
 2683 static list_entry *
 2684 NdisInterlockedInsertTailList(head, entry, lock)
 2685         list_entry              *head;
 2686         list_entry              *entry;
 2687         ndis_spin_lock          *lock;
 2688 {
 2689         list_entry              *blink;
 2690 
 2691         KeAcquireSpinLock(&lock->nsl_spinlock, &lock->nsl_kirql);
 2692         blink = head->nle_blink;
 2693         entry->nle_flink = head;
 2694         entry->nle_blink = blink;
 2695         blink->nle_flink = entry;
 2696         head->nle_blink = entry;
 2697         KeReleaseSpinLock(&lock->nsl_spinlock, lock->nsl_kirql);
 2698 
 2699         return(blink);
 2700 }
 2701 
 2702 static uint8_t
 2703 NdisMSynchronizeWithInterrupt(intr, syncfunc, syncctx)
 2704         ndis_miniport_interrupt *intr;
 2705         void                    *syncfunc;
 2706         void                    *syncctx;
 2707 {
 2708         return(KeSynchronizeExecution(intr->ni_introbj, syncfunc, syncctx));
 2709 }
 2710 
 2711 /*
 2712  * Return the number of 100 nanosecond intervals since
 2713  * January 1, 1601. (?!?!)
 2714  */
 2715 static void
 2716 NdisGetCurrentSystemTime(tval)
 2717         uint64_t                *tval;
 2718 {
 2719         struct timespec         ts;
 2720 
 2721         nanotime(&ts);
 2722         *tval = (uint64_t)ts.tv_nsec / 100 + (uint64_t)ts.tv_sec * 10000000 +
 2723             11644473600;
 2724 
 2725         return;
 2726 }
 2727 
 2728 /*
 2729  * Return the number of milliseconds since the system booted.
 2730  */
 2731 static void
 2732 NdisGetSystemUpTime(tval)
 2733         uint32_t                *tval;
 2734 {
 2735         struct timespec         ts;
 2736  
 2737         nanouptime(&ts);
 2738         *tval = ts.tv_nsec / 1000000 + ts.tv_sec * 1000;
 2739 
 2740         return;
 2741 }
 2742 
 2743 static void
 2744 NdisInitializeString(dst, src)
 2745         unicode_string          *dst;
 2746         char                    *src;
 2747 {
 2748         ansi_string             as;
 2749         RtlInitAnsiString(&as, src);
 2750         RtlAnsiStringToUnicodeString(dst, &as, TRUE);
 2751         return;
 2752 }
 2753 
 2754 static void
 2755 NdisFreeString(str)
 2756         unicode_string          *str;
 2757 {
 2758         RtlFreeUnicodeString(str);
 2759         return;
 2760 }
 2761 
 2762 static ndis_status
 2763 NdisMRemoveMiniport(adapter)
 2764         ndis_handle             *adapter;
 2765 {
 2766         return(NDIS_STATUS_SUCCESS);
 2767 }
 2768 
 2769 static void
 2770 NdisInitAnsiString(dst, src)
 2771         ansi_string             *dst;
 2772         char                    *src;
 2773 {
 2774         RtlInitAnsiString(dst, src);
 2775         return;
 2776 }
 2777 
 2778 static void
 2779 NdisInitUnicodeString(dst, src)
 2780         unicode_string          *dst;
 2781         uint16_t                *src;
 2782 {
 2783         RtlInitUnicodeString(dst, src);
 2784         return;
 2785 }
 2786 
 2787 static void NdisMGetDeviceProperty(adapter, phydevobj,
 2788         funcdevobj, nextdevobj, resources, transresources)
 2789         ndis_handle             adapter;
 2790         device_object           **phydevobj;
 2791         device_object           **funcdevobj;
 2792         device_object           **nextdevobj;
 2793         cm_resource_list        *resources;
 2794         cm_resource_list        *transresources;
 2795 {
 2796         ndis_miniport_block     *block;
 2797 
 2798         block = (ndis_miniport_block *)adapter;
 2799 
 2800         if (phydevobj != NULL)
 2801                 *phydevobj = block->nmb_physdeviceobj;
 2802         if (funcdevobj != NULL)
 2803                 *funcdevobj = block->nmb_deviceobj;
 2804         if (nextdevobj != NULL)
 2805                 *nextdevobj = block->nmb_nextdeviceobj;
 2806 
 2807         return;
 2808 }
 2809 
 2810 static void
 2811 NdisGetFirstBufferFromPacket(packet, buf, firstva, firstlen, totlen)
 2812         ndis_packet             *packet;
 2813         ndis_buffer             **buf;
 2814         void                    **firstva;
 2815         uint32_t                *firstlen;
 2816         uint32_t                *totlen;
 2817 {
 2818         ndis_buffer             *tmp;
 2819 
 2820         tmp = packet->np_private.npp_head;
 2821         *buf = tmp;
 2822         if (tmp == NULL) {
 2823                 *firstva = NULL;
 2824                 *firstlen = *totlen = 0;
 2825         } else {
 2826                 *firstva = MmGetMdlVirtualAddress(tmp);
 2827                 *firstlen = *totlen = MmGetMdlByteCount(tmp);
 2828                 for (tmp = tmp->mdl_next; tmp != NULL; tmp = tmp->mdl_next)
 2829                         *totlen += MmGetMdlByteCount(tmp);
 2830         }
 2831 
 2832         return;
 2833 }
 2834 
 2835 static void
 2836 NdisGetFirstBufferFromPacketSafe(packet, buf, firstva, firstlen, totlen, prio)
 2837         ndis_packet             *packet;
 2838         ndis_buffer             **buf;
 2839         void                    **firstva;
 2840         uint32_t                *firstlen;
 2841         uint32_t                *totlen;
 2842         uint32_t                prio;
 2843 {
 2844         NdisGetFirstBufferFromPacket(packet, buf, firstva, firstlen, totlen);
 2845 }
 2846 
 2847 static int
 2848 ndis_find_sym(lf, filename, suffix, sym)
 2849         linker_file_t           lf;
 2850         char                    *filename;
 2851         char                    *suffix;
 2852         caddr_t                 *sym;
 2853 {
 2854         char                    *fullsym;
 2855         char                    *suf;
 2856         int                     i;
 2857 
 2858         fullsym = ExAllocatePoolWithTag(NonPagedPool, MAXPATHLEN, 0);
 2859         if (fullsym == NULL)
 2860                 return(ENOMEM);
 2861 
 2862         bzero(fullsym, MAXPATHLEN);
 2863         strncpy(fullsym, filename, MAXPATHLEN);
 2864         if (strlen(filename) < 4) {
 2865                 ExFreePool(fullsym);
 2866                 return(EINVAL);
 2867         }
 2868 
 2869         /* If the filename has a .ko suffix, strip if off. */
 2870         suf = fullsym + (strlen(filename) - 3);
 2871         if (strcmp(suf, ".ko") == 0)
 2872                 *suf = '\0';
 2873 
 2874         for (i = 0; i < strlen(fullsym); i++) {
 2875                 if (fullsym[i] == '.')
 2876                         fullsym[i] = '_';
 2877                 else
 2878                         fullsym[i] = tolower(fullsym[i]);
 2879         }
 2880         strcat(fullsym, suffix);
 2881         *sym = linker_file_lookup_symbol(lf, fullsym, 0);
 2882         ExFreePool(fullsym);
 2883         if (*sym == 0)
 2884                 return(ENOENT);
 2885 
 2886         return(0);
 2887 }
 2888 
 2889 /* can also return NDIS_STATUS_RESOURCES/NDIS_STATUS_ERROR_READING_FILE */
 2890 static void
 2891 NdisOpenFile(status, filehandle, filelength, filename, highestaddr)
 2892         ndis_status             *status;
 2893         ndis_handle             *filehandle;
 2894         uint32_t                *filelength;
 2895         unicode_string          *filename;
 2896         ndis_physaddr           highestaddr;
 2897 {
 2898         ansi_string             as;
 2899         char                    *afilename = NULL;
 2900         struct thread           *td = curthread;
 2901         struct nameidata        nd;
 2902         int                     flags, error;
 2903         struct vattr            vat;
 2904         struct vattr            *vap = &vat;
 2905         ndis_fh                 *fh;
 2906         char                    *path;
 2907         linker_file_t           head, lf;
 2908         caddr_t                 kldstart, kldend;
 2909 
 2910         if (RtlUnicodeStringToAnsiString(&as, filename, TRUE)) {
 2911                 *status = NDIS_STATUS_RESOURCES;
 2912                 return;
 2913         }
 2914 
 2915         afilename = strdup(as.as_buf, M_DEVBUF);
 2916         RtlFreeAnsiString(&as);
 2917 
 2918         fh = ExAllocatePoolWithTag(NonPagedPool, sizeof(ndis_fh), 0);
 2919         if (fh == NULL) {
 2920                 free(afilename, M_DEVBUF);
 2921                 *status = NDIS_STATUS_RESOURCES;
 2922                 return;
 2923         }
 2924 
 2925         fh->nf_name = afilename;
 2926 
 2927         /*
 2928          * During system bootstrap, it's impossible to load files
 2929          * from the rootfs since it's not mounted yet. We therefore
 2930          * offer the possibility of opening files that have been
 2931          * preloaded as modules instead. Both choices will work
 2932          * when kldloading a module from multiuser, but only the
 2933          * module option will work during bootstrap. The module
 2934          * loading option works by using the ndiscvt(8) utility
 2935          * to convert the arbitrary file into a .ko using objcopy(1).
 2936          * This file will contain two special symbols: filename_start
 2937          * and filename_end. All we have to do is traverse the KLD
 2938          * list in search of those symbols and we've found the file
 2939          * data. As an added bonus, ndiscvt(8) will also generate
 2940          * a normal .o file which can be linked statically with
 2941          * the kernel. This means that the symbols will actual reside
 2942          * in the kernel's symbol table, but that doesn't matter to
 2943          * us since the kernel appears to us as just another module.
 2944          */
 2945 
 2946         /*
 2947          * This is an evil trick for getting the head of the linked
 2948          * file list, which is not exported from kern_linker.o. It
 2949          * happens that linker file #1 is always the kernel, and is
 2950          * always the first element in the list.
 2951          */
 2952 
 2953         head = linker_find_file_by_id(1);
 2954         for (lf = head; lf != NULL; lf = TAILQ_NEXT(lf, link)) {
 2955                 if (ndis_find_sym(lf, afilename, "_start", &kldstart))
 2956                         continue;
 2957                 if (ndis_find_sym(lf, afilename, "_end", &kldend))
 2958                         continue;
 2959                 fh->nf_vp = lf;
 2960                 fh->nf_map = NULL;
 2961                 fh->nf_type = NDIS_FH_TYPE_MODULE;
 2962                 *filelength = fh->nf_maplen = (kldend - kldstart) & 0xFFFFFFFF;
 2963                 *filehandle = fh;
 2964                 *status = NDIS_STATUS_SUCCESS;
 2965                 return;
 2966         }
 2967 
 2968         if (TAILQ_EMPTY(&mountlist)) {
 2969                 ExFreePool(fh);
 2970                 *status = NDIS_STATUS_FILE_NOT_FOUND;
 2971                 printf("NDIS: could not find file %s in linker list\n",
 2972                     afilename);
 2973                 printf("NDIS: and no filesystems mounted yet, "
 2974                     "aborting NdisOpenFile()\n");
 2975                 free(afilename, M_DEVBUF);
 2976                 return;
 2977         }
 2978 
 2979         path = ExAllocatePoolWithTag(NonPagedPool, MAXPATHLEN, 0);
 2980         if (path == NULL) {
 2981                 ExFreePool(fh);
 2982                 free(afilename, M_DEVBUF);
 2983                 *status = NDIS_STATUS_RESOURCES;
 2984                 return;
 2985         }
 2986 
 2987         snprintf(path, MAXPATHLEN, "%s/%s", ndis_filepath, afilename);
 2988 
 2989         mtx_lock(&Giant);
 2990 
 2991         /* Some threads don't have a current working directory. */
 2992 
 2993         if (td->td_proc->p_fd->fd_rdir == NULL)
 2994                 td->td_proc->p_fd->fd_rdir = rootvnode;
 2995         if (td->td_proc->p_fd->fd_cdir == NULL)
 2996                 td->td_proc->p_fd->fd_cdir = rootvnode;
 2997 
 2998         NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, path, td);
 2999 
 3000         flags = FREAD;
 3001         error = vn_open(&nd, &flags, 0, -1);
 3002         if (error) {
 3003                 mtx_unlock(&Giant);
 3004                 *status = NDIS_STATUS_FILE_NOT_FOUND;
 3005                 ExFreePool(fh);
 3006                 printf("NDIS: open file %s failed: %d\n", path, error);
 3007                 ExFreePool(path);
 3008                 free(afilename, M_DEVBUF);
 3009                 return;
 3010         }
 3011 
 3012         ExFreePool(path);
 3013 
 3014         NDFREE(&nd, NDF_ONLY_PNBUF);
 3015 
 3016         /* Get the file size. */
 3017         VOP_GETATTR(nd.ni_vp, vap, td->td_ucred, td);
 3018         VOP_UNLOCK(nd.ni_vp, 0, td);
 3019         mtx_unlock(&Giant);
 3020 
 3021         fh->nf_vp = nd.ni_vp;
 3022         fh->nf_map = NULL;
 3023         fh->nf_type = NDIS_FH_TYPE_VFS;
 3024         *filehandle = fh;
 3025         *filelength = fh->nf_maplen = vap->va_size & 0xFFFFFFFF;
 3026         *status = NDIS_STATUS_SUCCESS;
 3027 
 3028         return;
 3029 }
 3030 
 3031 static void
 3032 NdisMapFile(status, mappedbuffer, filehandle)
 3033         ndis_status             *status;
 3034         void                    **mappedbuffer;
 3035         ndis_handle             filehandle;
 3036 {
 3037         ndis_fh                 *fh;
 3038         struct thread           *td = curthread;
 3039         linker_file_t           lf;
 3040         caddr_t                 kldstart;
 3041         int                     error, resid;
 3042 
 3043         if (filehandle == NULL) {
 3044                 *status = NDIS_STATUS_FAILURE;
 3045                 return;
 3046         }
 3047 
 3048         fh = (ndis_fh *)filehandle;
 3049 
 3050         if (fh->nf_vp == NULL) {
 3051                 *status = NDIS_STATUS_FAILURE;
 3052                 return;
 3053         }
 3054 
 3055         if (fh->nf_map != NULL) {
 3056                 *status = NDIS_STATUS_ALREADY_MAPPED;
 3057                 return;
 3058         }
 3059 
 3060         if (fh->nf_type == NDIS_FH_TYPE_MODULE) {
 3061                 lf = fh->nf_vp;
 3062                 if (ndis_find_sym(lf, fh->nf_name, "_start", &kldstart)) {
 3063                         *status = NDIS_STATUS_FAILURE;
 3064                         return;
 3065                 }
 3066                 fh->nf_map = kldstart;
 3067                 *status = NDIS_STATUS_SUCCESS;
 3068                 *mappedbuffer = fh->nf_map;
 3069                 return;
 3070         }
 3071 
 3072         fh->nf_map = ExAllocatePoolWithTag(NonPagedPool, fh->nf_maplen, 0);
 3073 
 3074         if (fh->nf_map == NULL) {
 3075                 *status = NDIS_STATUS_RESOURCES;
 3076                 return;
 3077         }
 3078 
 3079         mtx_lock(&Giant);
 3080         error = vn_rdwr(UIO_READ, fh->nf_vp, fh->nf_map, fh->nf_maplen, 0,
 3081             UIO_SYSSPACE, 0, td->td_ucred, NOCRED, &resid, td);
 3082         mtx_unlock(&Giant);
 3083 
 3084         if (error)
 3085                 *status = NDIS_STATUS_FAILURE;
 3086         else {
 3087                 *status = NDIS_STATUS_SUCCESS;
 3088                 *mappedbuffer = fh->nf_map;
 3089         }
 3090 
 3091         return;
 3092 }
 3093 
 3094 static void
 3095 NdisUnmapFile(filehandle)
 3096         ndis_handle             filehandle;
 3097 {
 3098         ndis_fh                 *fh;
 3099         fh = (ndis_fh *)filehandle;
 3100 
 3101         if (fh->nf_map == NULL)
 3102                 return;
 3103 
 3104         if (fh->nf_type == NDIS_FH_TYPE_VFS)
 3105                 ExFreePool(fh->nf_map);
 3106         fh->nf_map = NULL;
 3107 
 3108         return;
 3109 }
 3110 
 3111 static void
 3112 NdisCloseFile(filehandle)
 3113         ndis_handle             filehandle;
 3114 {
 3115         struct thread           *td = curthread;
 3116         ndis_fh                 *fh;
 3117 
 3118         if (filehandle == NULL)
 3119                 return;
 3120 
 3121         fh = (ndis_fh *)filehandle;
 3122         if (fh->nf_map != NULL) {
 3123                 if (fh->nf_type == NDIS_FH_TYPE_VFS)
 3124                         ExFreePool(fh->nf_map);
 3125                 fh->nf_map = NULL;
 3126         }
 3127 
 3128         if (fh->nf_vp == NULL)
 3129                 return;
 3130 
 3131         if (fh->nf_type == NDIS_FH_TYPE_VFS) {
 3132                 mtx_lock(&Giant);
 3133                 vn_close(fh->nf_vp, FREAD, td->td_ucred, td);
 3134                 mtx_unlock(&Giant);
 3135         }
 3136 
 3137         fh->nf_vp = NULL;
 3138         free(fh->nf_name, M_DEVBUF);
 3139         ExFreePool(fh);
 3140 
 3141         return;
 3142 }
 3143 
 3144 static uint8_t
 3145 NdisSystemProcessorCount()
 3146 {
 3147         return(mp_ncpus);
 3148 }
 3149 
 3150 typedef void (*ndis_statusdone_handler)(ndis_handle);
 3151 typedef void (*ndis_status_handler)(ndis_handle, ndis_status,
 3152         void *, uint32_t);
 3153 
 3154 static void
 3155 NdisMIndicateStatusComplete(adapter)
 3156         ndis_handle             adapter;
 3157 {
 3158         ndis_miniport_block     *block;
 3159         ndis_statusdone_handler statusdonefunc;
 3160 
 3161         block = (ndis_miniport_block *)adapter;
 3162         statusdonefunc = block->nmb_statusdone_func;
 3163 
 3164         MSCALL1(statusdonefunc, adapter);
 3165         return;
 3166 }
 3167 
 3168 static void
 3169 NdisMIndicateStatus(adapter, status, sbuf, slen)
 3170         ndis_handle             adapter;
 3171         ndis_status             status;
 3172         void                    *sbuf;
 3173         uint32_t                slen;
 3174 {
 3175         ndis_miniport_block     *block;
 3176         ndis_status_handler     statusfunc;
 3177 
 3178         block = (ndis_miniport_block *)adapter;
 3179         statusfunc = block->nmb_status_func;
 3180 
 3181         MSCALL4(statusfunc, adapter, status, sbuf, slen);
 3182         return;
 3183 }
 3184 
 3185 /*
 3186  * The DDK documentation says that you should use IoQueueWorkItem()
 3187  * instead of ExQueueWorkItem(). The problem is, IoQueueWorkItem()
 3188  * is fundamentally incompatible with NdisScheduleWorkItem(), which
 3189  * depends on the API semantics of ExQueueWorkItem(). In our world,
 3190  * ExQueueWorkItem() is implemented on top of IoAllocateQueueItem()
 3191  * anyway.
 3192  *
 3193  * There are actually three distinct APIs here. NdisScheduleWorkItem()
 3194  * takes a pointer to an NDIS_WORK_ITEM. ExQueueWorkItem() takes a pointer
 3195  * to a WORK_QUEUE_ITEM. And finally, IoQueueWorkItem() takes a pointer
 3196  * to an opaque work item thingie which you get from IoAllocateWorkItem().
 3197  * An NDIS_WORK_ITEM is not the same as a WORK_QUEUE_ITEM. However,
 3198  * the NDIS_WORK_ITEM has some opaque storage at the end of it, and we
 3199  * (ab)use this storage as a WORK_QUEUE_ITEM, which is what we submit
 3200  * to ExQueueWorkItem().
 3201  *
 3202  * Got all that? (Sheesh.)
 3203  */
 3204 
 3205 ndis_status
 3206 NdisScheduleWorkItem(work)
 3207         ndis_work_item          *work;
 3208 {
 3209         work_queue_item         *wqi;
 3210 
 3211         wqi = (work_queue_item *)work->nwi_wraprsvd;
 3212         ExInitializeWorkItem(wqi,
 3213             (work_item_func)work->nwi_func, work->nwi_ctx);
 3214         ExQueueWorkItem(wqi, WORKQUEUE_DELAYED);
 3215 
 3216         return(NDIS_STATUS_SUCCESS);
 3217 }
 3218 
 3219 static void
 3220 NdisCopyFromPacketToPacket(dpkt, doff, reqlen, spkt, soff, cpylen)
 3221         ndis_packet             *dpkt;
 3222         uint32_t                doff;
 3223         uint32_t                reqlen;
 3224         ndis_packet             *spkt;
 3225         uint32_t                soff;
 3226         uint32_t                *cpylen;
 3227 {
 3228         ndis_buffer             *src, *dst;
 3229         char                    *sptr, *dptr;
 3230         int                     resid, copied, len, scnt, dcnt;
 3231 
 3232         *cpylen = 0;
 3233 
 3234         src = spkt->np_private.npp_head;
 3235         dst = dpkt->np_private.npp_head;
 3236 
 3237         sptr = MmGetMdlVirtualAddress(src);
 3238         dptr = MmGetMdlVirtualAddress(dst);
 3239         scnt = MmGetMdlByteCount(src);
 3240         dcnt = MmGetMdlByteCount(dst);
 3241 
 3242         while (soff) {
 3243                 if (MmGetMdlByteCount(src) > soff) {
 3244                         sptr += soff;
 3245                         scnt = MmGetMdlByteCount(src)- soff;
 3246                         break;
 3247                 }
 3248                 soff -= MmGetMdlByteCount(src);
 3249                 src = src->mdl_next;
 3250                 if (src == NULL)
 3251                         return;
 3252                 sptr = MmGetMdlVirtualAddress(src);
 3253         }
 3254 
 3255         while (doff) {
 3256                 if (MmGetMdlByteCount(dst) > doff) {
 3257                         dptr += doff;
 3258                         dcnt = MmGetMdlByteCount(dst) - doff;
 3259                         break;
 3260                 }
 3261                 doff -= MmGetMdlByteCount(dst);
 3262                 dst = dst->mdl_next;
 3263                 if (dst == NULL)
 3264                         return;
 3265                 dptr = MmGetMdlVirtualAddress(dst);
 3266         }
 3267 
 3268         resid = reqlen;
 3269         copied = 0;
 3270 
 3271         while(1) {
 3272                 if (resid < scnt)
 3273                         len = resid;
 3274                 else
 3275                         len = scnt;
 3276                 if (dcnt < len)
 3277                         len = dcnt;
 3278 
 3279                 bcopy(sptr, dptr, len);
 3280 
 3281                 copied += len;
 3282                 resid -= len;
 3283                 if (resid == 0)
 3284                         break;
 3285 
 3286                 dcnt -= len;
 3287                 if (dcnt == 0) {
 3288                         dst = dst->mdl_next;
 3289                         if (dst == NULL)
 3290                                 break;
 3291                         dptr = MmGetMdlVirtualAddress(dst);
 3292                         dcnt = MmGetMdlByteCount(dst);
 3293                 }
 3294 
 3295                 scnt -= len;
 3296                 if (scnt == 0) {
 3297                         src = src->mdl_next;
 3298                         if (src == NULL)
 3299                                 break;
 3300                         sptr = MmGetMdlVirtualAddress(src);
 3301                         scnt = MmGetMdlByteCount(src);
 3302                 }
 3303         }
 3304 
 3305         *cpylen = copied;
 3306         return;
 3307 }
 3308 
 3309 static void
 3310 NdisCopyFromPacketToPacketSafe(dpkt, doff, reqlen, spkt, soff, cpylen, prio)
 3311         ndis_packet             *dpkt;
 3312         uint32_t                doff;
 3313         uint32_t                reqlen;
 3314         ndis_packet             *spkt;
 3315         uint32_t                soff;
 3316         uint32_t                *cpylen;
 3317         uint32_t                prio;
 3318 {
 3319         NdisCopyFromPacketToPacket(dpkt, doff, reqlen, spkt, soff, cpylen);
 3320         return;
 3321 }
 3322 
 3323 static ndis_status
 3324 NdisMRegisterDevice(handle, devname, symname, majorfuncs, devobj, devhandle)
 3325         ndis_handle             handle;
 3326         unicode_string          *devname;
 3327         unicode_string          *symname;
 3328         driver_dispatch         *majorfuncs[];
 3329         void                    **devobj;
 3330         ndis_handle             *devhandle;
 3331 {
 3332         uint32_t                status;
 3333         device_object           *dobj;
 3334 
 3335         status = IoCreateDevice(handle, 0, devname,
 3336             FILE_DEVICE_UNKNOWN, 0, FALSE, &dobj);
 3337 
 3338         if (status == STATUS_SUCCESS) {
 3339                 *devobj = dobj;
 3340                 *devhandle = dobj;
 3341         }
 3342 
 3343         return(status);
 3344 }
 3345 
 3346 static ndis_status
 3347 NdisMDeregisterDevice(handle)
 3348         ndis_handle             handle;
 3349 {
 3350         IoDeleteDevice(handle);
 3351         return(NDIS_STATUS_SUCCESS);
 3352 }
 3353 
 3354 static ndis_status
 3355 NdisMQueryAdapterInstanceName(name, handle)
 3356         unicode_string          *name;
 3357         ndis_handle             handle;
 3358 {
 3359         ndis_miniport_block     *block;
 3360         device_t                dev;
 3361         ansi_string             as;
 3362 
 3363         block = (ndis_miniport_block *)handle;
 3364         dev = block->nmb_physdeviceobj->do_devext;
 3365 
 3366         RtlInitAnsiString(&as, __DECONST(char *, device_get_nameunit(dev)));
 3367         if (RtlAnsiStringToUnicodeString(name, &as, TRUE))
 3368                 return(NDIS_STATUS_RESOURCES);
 3369 
 3370         return(NDIS_STATUS_SUCCESS);
 3371 }
 3372 
 3373 static void
 3374 NdisMRegisterUnloadHandler(handle, func)
 3375         ndis_handle             handle;
 3376         void                    *func;
 3377 {
 3378         return;
 3379 }
 3380 
 3381 static void
 3382 dummy()
 3383 {
 3384         printf ("NDIS dummy called...\n");
 3385         return;
 3386 }
 3387 
 3388 /*
 3389  * Note: a couple of entries in this table specify the
 3390  * number of arguments as "foo + 1". These are routines
 3391  * that accept a 64-bit argument, passed by value. On
 3392  * x86, these arguments consume two longwords on the stack,
 3393  * so we lie and say there's one additional argument so
 3394  * that the wrapping routines will do the right thing.
 3395  */
 3396 
 3397 image_patch_table ndis_functbl[] = {
 3398         IMPORT_SFUNC(NdisCopyFromPacketToPacket, 6),
 3399         IMPORT_SFUNC(NdisCopyFromPacketToPacketSafe, 7),
 3400         IMPORT_SFUNC(NdisScheduleWorkItem, 1),
 3401         IMPORT_SFUNC(NdisMIndicateStatusComplete, 1),
 3402         IMPORT_SFUNC(NdisMIndicateStatus, 4),
 3403         IMPORT_SFUNC(NdisSystemProcessorCount, 0),
 3404         IMPORT_SFUNC(NdisUnchainBufferAtBack, 2),
 3405         IMPORT_SFUNC(NdisGetFirstBufferFromPacket, 5),
 3406         IMPORT_SFUNC(NdisGetFirstBufferFromPacketSafe, 6),
 3407         IMPORT_SFUNC(NdisGetBufferPhysicalArraySize, 2),
 3408         IMPORT_SFUNC(NdisMGetDeviceProperty, 6),
 3409         IMPORT_SFUNC(NdisInitAnsiString, 2),
 3410         IMPORT_SFUNC(NdisInitUnicodeString, 2),
 3411         IMPORT_SFUNC(NdisWriteConfiguration, 4),
 3412         IMPORT_SFUNC(NdisAnsiStringToUnicodeString, 2),
 3413         IMPORT_SFUNC(NdisTerminateWrapper, 2),
 3414         IMPORT_SFUNC(NdisOpenConfigurationKeyByName, 4),
 3415         IMPORT_SFUNC(NdisOpenConfigurationKeyByIndex, 5),
 3416         IMPORT_SFUNC(NdisMRemoveMiniport, 1),
 3417         IMPORT_SFUNC(NdisInitializeString, 2),  
 3418         IMPORT_SFUNC(NdisFreeString, 1),        
 3419         IMPORT_SFUNC(NdisGetCurrentSystemTime, 1),
 3420         IMPORT_SFUNC(NdisGetSystemUpTime, 1),
 3421         IMPORT_SFUNC(NdisMSynchronizeWithInterrupt, 3),
 3422         IMPORT_SFUNC(NdisMAllocateSharedMemoryAsync, 4),
 3423         IMPORT_SFUNC(NdisInterlockedInsertHeadList, 3),
 3424         IMPORT_SFUNC(NdisInterlockedInsertTailList, 3),
 3425         IMPORT_SFUNC(NdisInterlockedRemoveHeadList, 2),
 3426         IMPORT_SFUNC(NdisInitializeWrapper, 4),
 3427         IMPORT_SFUNC(NdisMRegisterMiniport, 3),
 3428         IMPORT_SFUNC(NdisAllocateMemoryWithTag, 3),
 3429         IMPORT_SFUNC(NdisAllocateMemory, 4 + 1),
 3430         IMPORT_SFUNC(NdisMSetAttributesEx, 5),
 3431         IMPORT_SFUNC(NdisCloseConfiguration, 1),
 3432         IMPORT_SFUNC(NdisReadConfiguration, 5),
 3433         IMPORT_SFUNC(NdisOpenConfiguration, 3),
 3434         IMPORT_SFUNC(NdisAcquireSpinLock, 1),
 3435         IMPORT_SFUNC(NdisReleaseSpinLock, 1),
 3436         IMPORT_SFUNC(NdisDprAcquireSpinLock, 1),
 3437         IMPORT_SFUNC(NdisDprReleaseSpinLock, 1),
 3438         IMPORT_SFUNC(NdisAllocateSpinLock, 1),
 3439         IMPORT_SFUNC(NdisInitializeReadWriteLock, 1),
 3440         IMPORT_SFUNC(NdisAcquireReadWriteLock, 3),
 3441         IMPORT_SFUNC(NdisReleaseReadWriteLock, 2),
 3442         IMPORT_SFUNC(NdisFreeSpinLock, 1),
 3443         IMPORT_SFUNC(NdisFreeMemory, 3),
 3444         IMPORT_SFUNC(NdisReadPciSlotInformation, 5),
 3445         IMPORT_SFUNC(NdisWritePciSlotInformation, 5),
 3446         IMPORT_SFUNC_MAP(NdisImmediateReadPciSlotInformation,
 3447             NdisReadPciSlotInformation, 5),
 3448         IMPORT_SFUNC_MAP(NdisImmediateWritePciSlotInformation,
 3449             NdisWritePciSlotInformation, 5),
 3450         IMPORT_CFUNC(NdisWriteErrorLogEntry, 0),
 3451         IMPORT_SFUNC(NdisMStartBufferPhysicalMapping, 6),
 3452         IMPORT_SFUNC(NdisMCompleteBufferPhysicalMapping, 3),
 3453         IMPORT_SFUNC(NdisMInitializeTimer, 4),
 3454         IMPORT_SFUNC(NdisInitializeTimer, 3),
 3455         IMPORT_SFUNC(NdisSetTimer, 2),
 3456         IMPORT_SFUNC(NdisMCancelTimer, 2),
 3457         IMPORT_SFUNC_MAP(NdisCancelTimer, NdisMCancelTimer, 2),
 3458         IMPORT_SFUNC(NdisMSetPeriodicTimer, 2),
 3459         IMPORT_SFUNC(NdisMQueryAdapterResources, 4),
 3460         IMPORT_SFUNC(NdisMRegisterIoPortRange, 4),
 3461         IMPORT_SFUNC(NdisMDeregisterIoPortRange, 4),
 3462         IMPORT_SFUNC(NdisReadNetworkAddress, 4),
 3463         IMPORT_SFUNC(NdisQueryMapRegisterCount, 2),
 3464         IMPORT_SFUNC(NdisMAllocateMapRegisters, 5),
 3465         IMPORT_SFUNC(NdisMFreeMapRegisters, 1),
 3466         IMPORT_SFUNC(NdisMAllocateSharedMemory, 5),
 3467         IMPORT_SFUNC(NdisMMapIoSpace, 4 + 1),
 3468         IMPORT_SFUNC(NdisMUnmapIoSpace, 3),
 3469         IMPORT_SFUNC(NdisGetCacheFillSize, 0),
 3470         IMPORT_SFUNC(NdisMGetDmaAlignment, 1),
 3471         IMPORT_SFUNC(NdisMInitializeScatterGatherDma, 3),
 3472         IMPORT_SFUNC(NdisAllocatePacketPool, 4),
 3473         IMPORT_SFUNC(NdisAllocatePacketPoolEx, 5),
 3474         IMPORT_SFUNC(NdisAllocatePacket, 3),
 3475         IMPORT_SFUNC(NdisFreePacket, 1),
 3476         IMPORT_SFUNC(NdisFreePacketPool, 1),
 3477         IMPORT_SFUNC_MAP(NdisDprAllocatePacket, NdisAllocatePacket, 3),
 3478         IMPORT_SFUNC_MAP(NdisDprFreePacket, NdisFreePacket, 1),
 3479         IMPORT_SFUNC(NdisAllocateBufferPool, 3),
 3480         IMPORT_SFUNC(NdisAllocateBuffer, 5),
 3481         IMPORT_SFUNC(NdisQueryBuffer, 3),
 3482         IMPORT_SFUNC(NdisQueryBufferSafe, 4),
 3483         IMPORT_SFUNC(NdisBufferVirtualAddress, 1),
 3484         IMPORT_SFUNC(NdisBufferVirtualAddressSafe, 2),
 3485         IMPORT_SFUNC(NdisBufferLength, 1),
 3486         IMPORT_SFUNC(NdisFreeBuffer, 1),
 3487         IMPORT_SFUNC(NdisFreeBufferPool, 1),
 3488         IMPORT_SFUNC(NdisInterlockedIncrement, 1),
 3489         IMPORT_SFUNC(NdisInterlockedDecrement, 1),
 3490         IMPORT_SFUNC(NdisInitializeEvent, 1),
 3491         IMPORT_SFUNC(NdisSetEvent, 1),
 3492         IMPORT_SFUNC(NdisResetEvent, 1),
 3493         IMPORT_SFUNC(NdisWaitEvent, 2),
 3494         IMPORT_SFUNC(NdisUnicodeStringToAnsiString, 2),
 3495         IMPORT_SFUNC(NdisMPciAssignResources, 3),
 3496         IMPORT_SFUNC(NdisMFreeSharedMemory, 5 + 1),
 3497         IMPORT_SFUNC(NdisMRegisterInterrupt, 7),
 3498         IMPORT_SFUNC(NdisMDeregisterInterrupt, 1),
 3499         IMPORT_SFUNC(NdisMRegisterAdapterShutdownHandler, 3),
 3500         IMPORT_SFUNC(NdisMDeregisterAdapterShutdownHandler, 1),
 3501         IMPORT_SFUNC(NDIS_BUFFER_TO_SPAN_PAGES, 1),
 3502         IMPORT_SFUNC(NdisQueryBufferOffset, 3),
 3503         IMPORT_SFUNC(NdisAdjustBufferLength, 2),
 3504         IMPORT_SFUNC(NdisPacketPoolUsage, 1),
 3505         IMPORT_SFUNC(NdisMSleep, 1),
 3506         IMPORT_SFUNC(NdisUnchainBufferAtFront, 2),
 3507         IMPORT_SFUNC(NdisReadPcmciaAttributeMemory, 4),
 3508         IMPORT_SFUNC(NdisWritePcmciaAttributeMemory, 4),
 3509         IMPORT_SFUNC(NdisOpenFile, 5 + 1),
 3510         IMPORT_SFUNC(NdisMapFile, 3),
 3511         IMPORT_SFUNC(NdisUnmapFile, 1),
 3512         IMPORT_SFUNC(NdisCloseFile, 1),
 3513         IMPORT_SFUNC(NdisMRegisterDevice, 6),
 3514         IMPORT_SFUNC(NdisMDeregisterDevice, 1),
 3515         IMPORT_SFUNC(NdisMQueryAdapterInstanceName, 2),
 3516         IMPORT_SFUNC(NdisMRegisterUnloadHandler, 2),
 3517         IMPORT_SFUNC(ndis_timercall, 4),
 3518         IMPORT_SFUNC(ndis_asyncmem_complete, 2),
 3519         IMPORT_SFUNC(ndis_intr, 2),
 3520         IMPORT_SFUNC(ndis_intrhand, 4),
 3521 
 3522         /*
 3523          * This last entry is a catch-all for any function we haven't
 3524          * implemented yet. The PE import list patching routine will
 3525          * use it for any function that doesn't have an explicit match
 3526          * in this table.
 3527          */
 3528 
 3529         { NULL, (FUNC)dummy, NULL, 0, WINDRV_WRAP_STDCALL },
 3530 
 3531         /* End of list. */
 3532 
 3533         { NULL, NULL, NULL }
 3534 };

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