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

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    1 /*
    2  * Copyright (c) HighPoint Technologies, Inc.
    3  * 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  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/11.2/sys/dev/hptrr/hptrr_osm_bsd.c 331722 2018-03-29 02:50:57Z eadler $");
   29 
   30 #include <dev/hptrr/hptrr_config.h>
   31 /* $Id: osm_bsd.c,v 1.27 2007/11/22 07:35:49 gmm Exp $
   32  *
   33  * HighPoint RAID Driver for FreeBSD
   34  * Copyright (C) 2005 HighPoint Technologies, Inc. All Rights Reserved.
   35  */
   36 #include <dev/hptrr/os_bsd.h>
   37 #include <dev/hptrr/hptintf.h>
   38 
   39 static int attach_generic = 0;
   40 TUNABLE_INT("hw.hptrr.attach_generic", &attach_generic);
   41 
   42 static HIM *hpt_match(device_t dev)
   43 {
   44         PCI_ID pci_id;
   45         int i;
   46         HIM *him;
   47 
   48         /* Some of supported chips are used not only by HPT. */
   49         if (pci_get_vendor(dev) != 0x1103 && !attach_generic)
   50                 return (NULL);
   51         for (him = him_list; him; him = him->next) {
   52                 for (i=0; him->get_supported_device_id(i, &pci_id); i++) {
   53                         if ((pci_get_vendor(dev) == pci_id.vid) &&
   54                                 (pci_get_device(dev) == pci_id.did)){
   55                                 return (him);
   56                         }
   57                 }
   58         }
   59         return (NULL);
   60 }
   61 
   62 static int hpt_probe(device_t dev)
   63 {
   64         HIM *him;
   65 
   66         him = hpt_match(dev);
   67         if (him != NULL) {
   68                 KdPrint(("hpt_probe: adapter at PCI %d:%d:%d, IRQ %d",
   69                         pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev), pci_get_irq(dev)
   70                             ));
   71                 device_set_desc(dev, him->name);
   72                 return (BUS_PROBE_DEFAULT);
   73         }
   74 
   75         return (ENXIO);
   76 }
   77 
   78 static int hpt_attach(device_t dev)
   79 {
   80         PHBA hba = (PHBA)device_get_softc(dev);
   81         HIM *him;
   82         PCI_ID pci_id;
   83         HPT_UINT size;
   84         PVBUS vbus;
   85         PVBUS_EXT vbus_ext;
   86         
   87         KdPrint(("hpt_attach(%d/%d/%d)", pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev)));
   88 
   89         him = hpt_match(dev);
   90         hba->ext_type = EXT_TYPE_HBA;
   91         hba->ldm_adapter.him = him;
   92 
   93         pci_enable_busmaster(dev);
   94 
   95         pci_id.vid = pci_get_vendor(dev);
   96         pci_id.did = pci_get_device(dev);
   97         pci_id.rev = pci_get_revid(dev);
   98 
   99         size = him->get_adapter_size(&pci_id);
  100         hba->ldm_adapter.him_handle = malloc(size, M_DEVBUF, M_WAITOK);
  101 
  102         hba->pcidev = dev;
  103         hba->pciaddr.tree = 0;
  104         hba->pciaddr.bus = pci_get_bus(dev);
  105         hba->pciaddr.device = pci_get_slot(dev);
  106         hba->pciaddr.function = pci_get_function(dev);
  107 
  108         if (!him->create_adapter(&pci_id, hba->pciaddr, hba->ldm_adapter.him_handle, hba)) {
  109                 free(hba->ldm_adapter.him_handle, M_DEVBUF);
  110                 return ENXIO;
  111         }
  112 
  113         os_printk("adapter at PCI %d:%d:%d, IRQ %d",
  114                 hba->pciaddr.bus, hba->pciaddr.device, hba->pciaddr.function, pci_get_irq(dev));
  115 
  116         if (!ldm_register_adapter(&hba->ldm_adapter)) {
  117                 size = ldm_get_vbus_size();
  118                 vbus_ext = malloc(sizeof(VBUS_EXT) + size, M_DEVBUF, M_WAITOK |
  119                     M_ZERO);
  120                 vbus_ext->ext_type = EXT_TYPE_VBUS;
  121                 ldm_create_vbus((PVBUS)vbus_ext->vbus, vbus_ext);
  122                 ldm_register_adapter(&hba->ldm_adapter);
  123         }
  124 
  125         ldm_for_each_vbus(vbus, vbus_ext) {
  126                 if (hba->ldm_adapter.vbus==vbus) {
  127                         hba->vbus_ext = vbus_ext;
  128                         hba->next = vbus_ext->hba_list;
  129                         vbus_ext->hba_list = hba;
  130                         break;
  131                 }
  132         }       
  133         return 0;
  134 }
  135 
  136 /*
  137  * Maybe we'd better to use the bus_dmamem_alloc to alloc DMA memory,
  138  * but there are some problems currently (alignment, etc).
  139  */
  140 static __inline void *__get_free_pages(int order)
  141 {
  142         /* don't use low memory - other devices may get starved */
  143         return contigmalloc(PAGE_SIZE<<order, 
  144                         M_DEVBUF, M_WAITOK, BUS_SPACE_MAXADDR_24BIT, BUS_SPACE_MAXADDR, PAGE_SIZE, 0);
  145 }
  146 
  147 static __inline void free_pages(void *p, int order)
  148 {
  149         contigfree(p, PAGE_SIZE<<order, M_DEVBUF);
  150 }
  151 
  152 static int hpt_alloc_mem(PVBUS_EXT vbus_ext)
  153 {
  154         PHBA hba;
  155         struct freelist *f;
  156         HPT_UINT i;
  157         void **p;
  158 
  159         for (hba = vbus_ext->hba_list; hba; hba = hba->next)
  160                 hba->ldm_adapter.him->get_meminfo(hba->ldm_adapter.him_handle);
  161 
  162         ldm_get_mem_info((PVBUS)vbus_ext->vbus, 0);
  163 
  164         for (f=vbus_ext->freelist_head; f; f=f->next) {
  165                 KdPrint(("%s: %d*%d=%d bytes",
  166                         f->tag, f->count, f->size, f->count*f->size));
  167                 for (i=0; i<f->count; i++) {
  168                         p = (void **)malloc(f->size, M_DEVBUF, M_WAITOK);
  169                         if (!p) return (ENXIO);
  170                         *p = f->head;
  171                         f->head = p;
  172                 }
  173         }
  174 
  175         for (f=vbus_ext->freelist_dma_head; f; f=f->next) {
  176                 int order, size, j;
  177 
  178                 HPT_ASSERT((f->size & (f->alignment-1))==0);
  179 
  180                 for (order=0, size=PAGE_SIZE; size<f->size; order++, size<<=1)
  181                         ;
  182 
  183                 KdPrint(("%s: %d*%d=%d bytes, order %d",
  184                         f->tag, f->count, f->size, f->count*f->size, order));
  185                 HPT_ASSERT(f->alignment<=PAGE_SIZE);
  186 
  187                 for (i=0; i<f->count;) {
  188                         p = (void **)__get_free_pages(order);
  189                         if (!p) return -1;
  190                         for (j = size/f->size; j && i<f->count; i++,j--) {
  191                                 *p = f->head;
  192                                 *(BUS_ADDRESS *)(p+1) = (BUS_ADDRESS)vtophys(p);
  193                                 f->head = p;
  194                                 p = (void **)((unsigned long)p + f->size);
  195                         }
  196                 }
  197         }
  198         
  199         HPT_ASSERT(PAGE_SIZE==DMAPOOL_PAGE_SIZE);
  200 
  201         for (i=0; i<os_max_cache_pages; i++) {
  202                 p = (void **)__get_free_pages(0);
  203                 if (!p) return -1;
  204                 HPT_ASSERT(((HPT_UPTR)p & (DMAPOOL_PAGE_SIZE-1))==0);
  205                 dmapool_put_page((PVBUS)vbus_ext->vbus, p, (BUS_ADDRESS)vtophys(p));
  206         }
  207 
  208         return 0;
  209 }
  210 
  211 static void hpt_free_mem(PVBUS_EXT vbus_ext)
  212 {
  213         struct freelist *f;
  214         void *p;
  215         int i;
  216         BUS_ADDRESS bus;
  217 
  218         for (f=vbus_ext->freelist_head; f; f=f->next) {
  219 #if DBG
  220                 if (f->count!=f->reserved_count) {
  221                         KdPrint(("memory leak for freelist %s (%d/%d)", f->tag, f->count, f->reserved_count));
  222                 }
  223 #endif
  224                 while ((p=freelist_get(f)))
  225                         free(p, M_DEVBUF);
  226         }
  227 
  228         for (i=0; i<os_max_cache_pages; i++) {
  229                 p = dmapool_get_page((PVBUS)vbus_ext->vbus, &bus);
  230                 HPT_ASSERT(p);
  231                 free_pages(p, 0);
  232         }
  233 
  234         for (f=vbus_ext->freelist_dma_head; f; f=f->next) {
  235                 int order, size;
  236 #if DBG
  237                 if (f->count!=f->reserved_count) {
  238                         KdPrint(("memory leak for dma freelist %s (%d/%d)", f->tag, f->count, f->reserved_count));
  239                 }
  240 #endif
  241                 for (order=0, size=PAGE_SIZE; size<f->size; order++, size<<=1) ;
  242 
  243                 while ((p=freelist_get_dma(f, &bus))) {
  244                         if (order)
  245                                 free_pages(p, order);
  246                         else {
  247                         /* can't free immediately since other blocks in this page may still be in the list */
  248                                 if (((HPT_UPTR)p & (PAGE_SIZE-1))==0)
  249                                         dmapool_put_page((PVBUS)vbus_ext->vbus, p, bus);
  250                         }
  251                 }
  252         }
  253         
  254         while ((p = dmapool_get_page((PVBUS)vbus_ext->vbus, &bus)))
  255                 free_pages(p, 0);
  256 }
  257 
  258 static int hpt_init_vbus(PVBUS_EXT vbus_ext)
  259 {
  260         PHBA hba;
  261 
  262         for (hba = vbus_ext->hba_list; hba; hba = hba->next)
  263                 if (!hba->ldm_adapter.him->initialize(hba->ldm_adapter.him_handle)) {
  264                         KdPrint(("fail to initialize %p", hba));
  265                         return -1;
  266                 }
  267 
  268         ldm_initialize_vbus((PVBUS)vbus_ext->vbus, &vbus_ext->hba_list->ldm_adapter);
  269         return 0;
  270 }
  271 
  272 static void hpt_flush_done(PCOMMAND pCmd)
  273 {
  274         PVDEV vd = pCmd->target;
  275 
  276         if (mIsArray(vd->type) && vd->u.array.transform && vd!=vd->u.array.transform->target) {
  277                 vd = vd->u.array.transform->target;
  278                 HPT_ASSERT(vd);
  279                 pCmd->target = vd;
  280                 pCmd->Result = RETURN_PENDING;
  281                 vdev_queue_cmd(pCmd);
  282                 return;
  283         }
  284 
  285         *(int *)pCmd->priv = 1;
  286         wakeup(pCmd);
  287 }
  288 
  289 /*
  290  * flush a vdev (without retry).
  291  */
  292 static int hpt_flush_vdev(PVBUS_EXT vbus_ext, PVDEV vd)
  293 {
  294         PCOMMAND pCmd;
  295         int result = 0, done;
  296         HPT_UINT count;
  297 
  298         KdPrint(("flusing dev %p", vd));
  299 
  300         hpt_assert_vbus_locked(vbus_ext);
  301 
  302         if (mIsArray(vd->type) && vd->u.array.transform)
  303                 count = max(vd->u.array.transform->source->cmds_per_request,
  304                                         vd->u.array.transform->target->cmds_per_request);
  305         else
  306                 count = vd->cmds_per_request;
  307 
  308         pCmd = ldm_alloc_cmds(vd->vbus, count);
  309 
  310         if (!pCmd) {
  311                 return -1;
  312         }
  313 
  314         pCmd->type = CMD_TYPE_FLUSH;
  315         pCmd->flags.hard_flush = 1;
  316         pCmd->target = vd;
  317         pCmd->done = hpt_flush_done;
  318         done = 0;
  319         pCmd->priv = &done;
  320 
  321         ldm_queue_cmd(pCmd);
  322         
  323         if (!done) {
  324                 while (hpt_sleep(vbus_ext, pCmd, PPAUSE, "hptfls", HPT_OSM_TIMEOUT)) {
  325                         ldm_reset_vbus(vd->vbus);
  326                 }
  327         }
  328 
  329         KdPrint(("flush result %d", pCmd->Result));
  330 
  331         if (pCmd->Result!=RETURN_SUCCESS)
  332                 result = -1;
  333 
  334         ldm_free_cmds(pCmd);
  335 
  336         return result;
  337 }
  338 
  339 static void hpt_stop_tasks(PVBUS_EXT vbus_ext);
  340 static void hpt_shutdown_vbus(PVBUS_EXT vbus_ext, int howto)
  341 {
  342         PVBUS     vbus = (PVBUS)vbus_ext->vbus;
  343         PHBA hba;
  344         int i;
  345         
  346         KdPrint(("hpt_shutdown_vbus"));
  347 
  348         /* stop all ctl tasks and disable the worker taskqueue */
  349         hpt_stop_tasks(vbus_ext);
  350         hpt_lock_vbus(vbus_ext);
  351         vbus_ext->worker.ta_context = 0;
  352 
  353         /* flush devices */
  354         for (i=0; i<osm_max_targets; i++) {
  355                 PVDEV vd = ldm_find_target(vbus, i);
  356                 if (vd) {
  357                         /* retry once */
  358                         if (hpt_flush_vdev(vbus_ext, vd))
  359                                 hpt_flush_vdev(vbus_ext, vd);
  360                 }
  361         }
  362 
  363         ldm_shutdown(vbus);
  364         hpt_unlock_vbus(vbus_ext);
  365 
  366         ldm_release_vbus(vbus);
  367 
  368         for (hba=vbus_ext->hba_list; hba; hba=hba->next)
  369                 bus_teardown_intr(hba->pcidev, hba->irq_res, hba->irq_handle);
  370 
  371         hpt_free_mem(vbus_ext);
  372 
  373         while ((hba=vbus_ext->hba_list)) {
  374                 vbus_ext->hba_list = hba->next;
  375                 free(hba->ldm_adapter.him_handle, M_DEVBUF);
  376         }
  377 
  378         callout_drain(&vbus_ext->timer);
  379         mtx_destroy(&vbus_ext->lock);
  380         free(vbus_ext, M_DEVBUF);
  381         KdPrint(("hpt_shutdown_vbus done"));
  382 }
  383 
  384 static void __hpt_do_tasks(PVBUS_EXT vbus_ext)
  385 {
  386         OSM_TASK *tasks;
  387 
  388         tasks = vbus_ext->tasks;
  389         vbus_ext->tasks = 0;
  390 
  391         while (tasks) {
  392                 OSM_TASK *t = tasks;
  393                 tasks = t->next;
  394                 t->next = 0;
  395                 t->func(vbus_ext->vbus, t->data);
  396         }
  397 }
  398 
  399 static void hpt_do_tasks(PVBUS_EXT vbus_ext, int pending)
  400 {
  401         if(vbus_ext){
  402                 hpt_lock_vbus(vbus_ext);
  403                 __hpt_do_tasks(vbus_ext);
  404                 hpt_unlock_vbus(vbus_ext);
  405         }
  406 }
  407 
  408 static void hpt_action(struct cam_sim *sim, union ccb *ccb);
  409 static void hpt_poll(struct cam_sim *sim);
  410 static void hpt_async(void * callback_arg, u_int32_t code, struct cam_path * path, void * arg);
  411 static void hpt_pci_intr(void *arg);
  412 
  413 static __inline POS_CMDEXT cmdext_get(PVBUS_EXT vbus_ext)
  414 {
  415         POS_CMDEXT p = vbus_ext->cmdext_list;
  416         if (p)
  417                 vbus_ext->cmdext_list = p->next;
  418         return p;
  419 }
  420 
  421 static __inline void cmdext_put(POS_CMDEXT p)
  422 {
  423         p->next = p->vbus_ext->cmdext_list;
  424         p->vbus_ext->cmdext_list = p;
  425 }
  426 
  427 static void hpt_timeout(void *arg)
  428 {
  429         PCOMMAND pCmd = (PCOMMAND)arg;
  430         POS_CMDEXT ext = (POS_CMDEXT)pCmd->priv;
  431         
  432         KdPrint(("pCmd %p timeout", pCmd));
  433         
  434         ldm_reset_vbus((PVBUS)ext->vbus_ext->vbus);
  435 }
  436 
  437 static void os_cmddone(PCOMMAND pCmd)
  438 {
  439         POS_CMDEXT ext = (POS_CMDEXT)pCmd->priv;
  440         union ccb *ccb = ext->ccb;
  441 
  442         KdPrint(("os_cmddone(%p, %d)", pCmd, pCmd->Result));
  443 
  444         callout_stop(&ext->timeout);
  445 
  446         switch(pCmd->Result) {
  447         case RETURN_SUCCESS:
  448                 ccb->ccb_h.status = CAM_REQ_CMP;
  449                 break;
  450         case RETURN_BAD_DEVICE:
  451                 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
  452                 break;
  453         case RETURN_DEVICE_BUSY:
  454                 ccb->ccb_h.status = CAM_BUSY;
  455                 break;
  456         case RETURN_INVALID_REQUEST:
  457                 ccb->ccb_h.status = CAM_REQ_INVALID;
  458                 break;
  459         case RETURN_SELECTION_TIMEOUT:
  460                 ccb->ccb_h.status = CAM_SEL_TIMEOUT;
  461                 break;
  462         case RETURN_RETRY:
  463                 ccb->ccb_h.status = CAM_BUSY;
  464                 break;
  465         default:
  466                 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR;
  467                 break;
  468         }
  469 
  470         if (pCmd->flags.data_in) {
  471                 bus_dmamap_sync(ext->vbus_ext->io_dmat, ext->dma_map, BUS_DMASYNC_POSTREAD);
  472         }
  473         else if (pCmd->flags.data_out) {
  474                 bus_dmamap_sync(ext->vbus_ext->io_dmat, ext->dma_map, BUS_DMASYNC_POSTWRITE);
  475         }
  476         
  477         bus_dmamap_unload(ext->vbus_ext->io_dmat, ext->dma_map);
  478 
  479         cmdext_put(ext);
  480         ldm_free_cmds(pCmd);
  481         xpt_done(ccb);
  482 }
  483 
  484 static int os_buildsgl(PCOMMAND pCmd, PSG pSg, int logical)
  485 {
  486         POS_CMDEXT ext = (POS_CMDEXT)pCmd->priv;
  487         union ccb *ccb = ext->ccb;
  488 
  489         if (logical) {
  490                 os_set_sgptr(pSg, (HPT_U8 *)ccb->csio.data_ptr);
  491                 pSg->size = ccb->csio.dxfer_len;
  492                 pSg->eot = 1;
  493                 return TRUE;
  494         }
  495 
  496         /* since we have provided physical sg, nobody will ask us to build physical sg */
  497         HPT_ASSERT(0);
  498         return FALSE;
  499 }
  500 
  501 static void hpt_io_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
  502 {
  503         PCOMMAND pCmd = (PCOMMAND)arg;
  504         POS_CMDEXT ext = (POS_CMDEXT)pCmd->priv;
  505         PSG psg = pCmd->psg;
  506         int idx;
  507         
  508         HPT_ASSERT(pCmd->flags.physical_sg);
  509         
  510         if (error)
  511                 panic("busdma error");
  512                 
  513         HPT_ASSERT(nsegs<=os_max_sg_descriptors);
  514 
  515         if (nsegs != 0) {
  516                 for (idx = 0; idx < nsegs; idx++, psg++) {
  517                         psg->addr.bus = segs[idx].ds_addr;
  518                         psg->size = segs[idx].ds_len;
  519                         psg->eot = 0;
  520                 }
  521                         psg[-1].eot = 1;
  522                 
  523                 if (pCmd->flags.data_in) {
  524                         bus_dmamap_sync(ext->vbus_ext->io_dmat, ext->dma_map,
  525                             BUS_DMASYNC_PREREAD);
  526                 }
  527                 else if (pCmd->flags.data_out) {
  528                         bus_dmamap_sync(ext->vbus_ext->io_dmat, ext->dma_map,
  529                             BUS_DMASYNC_PREWRITE);
  530                 }
  531         }
  532         callout_reset(&ext->timeout, HPT_OSM_TIMEOUT, hpt_timeout, pCmd);
  533         ldm_queue_cmd(pCmd);
  534 }
  535 
  536 static void hpt_scsi_io(PVBUS_EXT vbus_ext, union ccb *ccb)
  537 {
  538         PVBUS vbus = (PVBUS)vbus_ext->vbus;
  539         PVDEV vd;
  540         PCOMMAND pCmd;
  541         POS_CMDEXT ext;
  542         HPT_U8 *cdb;
  543 
  544         if (ccb->ccb_h.flags & CAM_CDB_POINTER)
  545                 cdb = ccb->csio.cdb_io.cdb_ptr;
  546         else
  547                 cdb = ccb->csio.cdb_io.cdb_bytes;
  548         
  549         KdPrint(("hpt_scsi_io: ccb %x id %d lun %d cdb %x-%x-%x",
  550                 ccb,
  551                 ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
  552                 *(HPT_U32 *)&cdb[0], *(HPT_U32 *)&cdb[4], *(HPT_U32 *)&cdb[8]
  553         ));
  554 
  555         /* ccb->ccb_h.path_id is not our bus id - don't check it */
  556         if (ccb->ccb_h.target_lun != 0 ||
  557                 ccb->ccb_h.target_id >= osm_max_targets ||
  558                 (ccb->ccb_h.flags & CAM_CDB_PHYS))
  559         {
  560                 ccb->ccb_h.status = CAM_TID_INVALID;
  561                 xpt_done(ccb);
  562                 return;
  563         }
  564 
  565         vd = ldm_find_target(vbus, ccb->ccb_h.target_id);
  566 
  567         if (!vd) {
  568                 ccb->ccb_h.status = CAM_SEL_TIMEOUT;
  569                 xpt_done(ccb);
  570                 return;
  571         }
  572    
  573         switch (cdb[0]) {
  574         case TEST_UNIT_READY:
  575         case START_STOP_UNIT:
  576         case SYNCHRONIZE_CACHE:
  577                 ccb->ccb_h.status = CAM_REQ_CMP;
  578                 break;
  579 
  580         case INQUIRY:
  581                 {
  582                         PINQUIRYDATA inquiryData;
  583                         memset(ccb->csio.data_ptr, 0, ccb->csio.dxfer_len);
  584                         inquiryData = (PINQUIRYDATA)ccb->csio.data_ptr;
  585                 
  586                         inquiryData->AdditionalLength = 31;
  587                         inquiryData->CommandQueue = 1;
  588                         memcpy(&inquiryData->VendorId, "HPT     ", 8);
  589                         memcpy(&inquiryData->ProductId, "DISK 0_0        ", 16);
  590         
  591                         if (vd->target_id / 10) {
  592                                 inquiryData->ProductId[7] = (vd->target_id % 100) / 10 + '';
  593                                 inquiryData->ProductId[8] = (vd->target_id % 100) % 10 + '';
  594                         }
  595                         else
  596                                 inquiryData->ProductId[7] = (vd->target_id % 100) % 10 + '';
  597         
  598                         memcpy(&inquiryData->ProductRevisionLevel, "4.00", 4);
  599         
  600                         ccb->ccb_h.status = CAM_REQ_CMP;
  601                 }
  602                 break;
  603 
  604         case READ_CAPACITY:
  605         {
  606                 HPT_U8 *rbuf = ccb->csio.data_ptr;
  607                 HPT_U32 cap;
  608                 
  609                 if (vd->capacity>0xfffffffful)
  610                         cap = 0xfffffffful;
  611                 else
  612                         cap = vd->capacity - 1;
  613         
  614                 rbuf[0] = (HPT_U8)(cap>>24);
  615                 rbuf[1] = (HPT_U8)(cap>>16);
  616                 rbuf[2] = (HPT_U8)(cap>>8);
  617                 rbuf[3] = (HPT_U8)cap;
  618                 rbuf[4] = 0;
  619                 rbuf[5] = 0;
  620                 rbuf[6] = 2;
  621                 rbuf[7] = 0;
  622 
  623                 ccb->ccb_h.status = CAM_REQ_CMP;
  624                 break;
  625         }
  626         
  627         case SERVICE_ACTION_IN: 
  628         {
  629                 HPT_U8 *rbuf = ccb->csio.data_ptr;
  630                 HPT_U64 cap = vd->capacity - 1;
  631                 
  632                 rbuf[0] = (HPT_U8)(cap>>56);
  633                 rbuf[1] = (HPT_U8)(cap>>48);
  634                 rbuf[2] = (HPT_U8)(cap>>40);
  635                 rbuf[3] = (HPT_U8)(cap>>32);
  636                 rbuf[4] = (HPT_U8)(cap>>24);
  637                 rbuf[5] = (HPT_U8)(cap>>16);
  638                 rbuf[6] = (HPT_U8)(cap>>8);
  639                 rbuf[7] = (HPT_U8)cap;
  640                 rbuf[8] = 0;
  641                 rbuf[9] = 0;
  642                 rbuf[10] = 2;
  643                 rbuf[11] = 0;
  644                 
  645                 ccb->ccb_h.status = CAM_REQ_CMP;
  646                 break;  
  647         }
  648         
  649         case READ_6:
  650         case READ_10:
  651         case READ_16:
  652         case WRITE_6:
  653         case WRITE_10:
  654         case WRITE_16:
  655         case 0x13:
  656         case 0x2f:
  657         {
  658                 int error;
  659 
  660                 pCmd = ldm_alloc_cmds(vbus, vd->cmds_per_request);
  661                 if(!pCmd){
  662                         KdPrint(("Failed to allocate command!"));
  663                         ccb->ccb_h.status = CAM_BUSY;
  664                         break;
  665                 }
  666 
  667                 switch (cdb[0]) {
  668                 case READ_6:
  669                 case WRITE_6:
  670                 case 0x13:
  671                         pCmd->uCmd.Ide.Lba =  ((HPT_U32)cdb[1] << 16) | ((HPT_U32)cdb[2] << 8) | (HPT_U32)cdb[3];
  672                         pCmd->uCmd.Ide.nSectors = (HPT_U16) cdb[4];
  673                         break;
  674                 case READ_16:
  675                 case WRITE_16: 
  676                 {
  677                         HPT_U64 block =
  678                                 ((HPT_U64)cdb[2]<<56) |
  679                                 ((HPT_U64)cdb[3]<<48) |
  680                                 ((HPT_U64)cdb[4]<<40) |
  681                                 ((HPT_U64)cdb[5]<<32) |
  682                                 ((HPT_U64)cdb[6]<<24) |
  683                                 ((HPT_U64)cdb[7]<<16) |
  684                                 ((HPT_U64)cdb[8]<<8) |
  685                                 ((HPT_U64)cdb[9]);
  686                         pCmd->uCmd.Ide.Lba = block;
  687                         pCmd->uCmd.Ide.nSectors = (HPT_U16)cdb[13] | ((HPT_U16)cdb[12]<<8);
  688                         break;
  689                 }
  690                 
  691                 default:
  692                         pCmd->uCmd.Ide.Lba = (HPT_U32)cdb[5] | ((HPT_U32)cdb[4] << 8) | ((HPT_U32)cdb[3] << 16) | ((HPT_U32)cdb[2] << 24);
  693                         pCmd->uCmd.Ide.nSectors = (HPT_U16) cdb[8] | ((HPT_U16)cdb[7]<<8);
  694                         break;
  695                 }
  696                 
  697                 switch (cdb[0]) {
  698                 case READ_6:
  699                 case READ_10:
  700                 case READ_16:
  701                         pCmd->flags.data_in = 1;
  702                         break;
  703                 case WRITE_6:
  704                 case WRITE_10:
  705                 case WRITE_16:
  706                         pCmd->flags.data_out = 1;
  707                         break;
  708                 }
  709                 pCmd->priv = ext = cmdext_get(vbus_ext);
  710                 HPT_ASSERT(ext);
  711                 ext->ccb = ccb;
  712                 pCmd->target = vd;
  713                 pCmd->done = os_cmddone;
  714                 pCmd->buildsgl = os_buildsgl;
  715                 pCmd->psg = ext->psg;
  716                 pCmd->flags.physical_sg = 1;
  717                 error = bus_dmamap_load_ccb(vbus_ext->io_dmat, 
  718                                         ext->dma_map, 
  719                                         ccb,
  720                                         hpt_io_dmamap_callback, pCmd,
  721                                         BUS_DMA_WAITOK
  722                                         );
  723                 KdPrint(("bus_dmamap_load return %d", error));
  724                 if (error && error!=EINPROGRESS) {
  725                         os_printk("bus_dmamap_load error %d", error);
  726                         cmdext_put(ext);
  727                         ldm_free_cmds(pCmd);
  728                         ccb->ccb_h.status = CAM_REQ_CMP_ERR;
  729                         xpt_done(ccb);
  730                 }
  731                 return;
  732         }
  733 
  734         default:
  735                 ccb->ccb_h.status = CAM_REQ_INVALID;
  736                 break;
  737         }
  738 
  739         xpt_done(ccb);
  740         return;
  741 }
  742 
  743 static void hpt_action(struct cam_sim *sim, union ccb *ccb)
  744 {
  745         PVBUS_EXT vbus_ext = (PVBUS_EXT)cam_sim_softc(sim);
  746 
  747         KdPrint(("hpt_action(fn=%d, id=%d)", ccb->ccb_h.func_code, ccb->ccb_h.target_id));
  748 
  749         hpt_assert_vbus_locked(vbus_ext);
  750         switch (ccb->ccb_h.func_code) {
  751         
  752         case XPT_SCSI_IO:
  753                 hpt_scsi_io(vbus_ext, ccb);
  754                 return;
  755 
  756         case XPT_RESET_BUS:
  757                 ldm_reset_vbus((PVBUS)vbus_ext->vbus);
  758                 break;
  759 
  760         case XPT_GET_TRAN_SETTINGS:
  761         case XPT_SET_TRAN_SETTINGS:
  762                 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
  763                 break;
  764 
  765         case XPT_CALC_GEOMETRY:
  766                 cam_calc_geometry(&ccb->ccg, 1);
  767                 break;
  768 
  769         case XPT_PATH_INQ:
  770         {
  771                 struct ccb_pathinq *cpi = &ccb->cpi;
  772 
  773                 cpi->version_num = 1;
  774                 cpi->hba_inquiry = PI_SDTR_ABLE;
  775                 cpi->target_sprt = 0;
  776                 cpi->hba_misc = PIM_NOBUSRESET;
  777                 cpi->hba_eng_cnt = 0;
  778                 cpi->max_target = osm_max_targets;
  779                 cpi->max_lun = 0;
  780                 cpi->unit_number = cam_sim_unit(sim);
  781                 cpi->bus_id = cam_sim_bus(sim);
  782                 cpi->initiator_id = osm_max_targets;
  783                 cpi->base_transfer_speed = 3300;
  784 
  785                 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
  786                 strlcpy(cpi->hba_vid, "HPT   ", HBA_IDLEN);
  787                 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
  788                 cpi->transport = XPORT_SPI;
  789                 cpi->transport_version = 2;
  790                 cpi->protocol = PROTO_SCSI;
  791                 cpi->protocol_version = SCSI_REV_2;
  792                 cpi->ccb_h.status = CAM_REQ_CMP;
  793                 break;
  794         }
  795 
  796         default:
  797                 ccb->ccb_h.status = CAM_REQ_INVALID;
  798                 break;
  799         }
  800 
  801         xpt_done(ccb);
  802         return;
  803 }
  804 
  805 static void hpt_pci_intr(void *arg)
  806 {       
  807         PVBUS_EXT vbus_ext = (PVBUS_EXT)arg;
  808         hpt_lock_vbus(vbus_ext);
  809         ldm_intr((PVBUS)vbus_ext->vbus);
  810         hpt_unlock_vbus(vbus_ext);
  811 }
  812 
  813 static void hpt_poll(struct cam_sim *sim)
  814 {
  815         PVBUS_EXT vbus_ext = cam_sim_softc(sim);
  816         hpt_assert_vbus_locked(vbus_ext);
  817         ldm_intr((PVBUS)vbus_ext->vbus);
  818 }
  819 
  820 static void hpt_async(void * callback_arg, u_int32_t code, struct cam_path * path, void * arg)
  821 {
  822         KdPrint(("hpt_async"));
  823 }
  824 
  825 static int hpt_shutdown(device_t dev)
  826 {
  827         KdPrint(("hpt_shutdown(dev=%p)", dev));
  828         return 0;
  829 }
  830 
  831 static int hpt_detach(device_t dev)
  832 {
  833         /* we don't allow the driver to be unloaded. */
  834         return EBUSY;
  835 }
  836 
  837 static void hpt_ioctl_done(struct _IOCTL_ARG *arg)
  838 {
  839         arg->ioctl_cmnd = 0;
  840         wakeup(arg);
  841 }
  842 
  843 static void __hpt_do_ioctl(PVBUS_EXT vbus_ext, IOCTL_ARG *ioctl_args)
  844 {
  845         ioctl_args->result = -1;
  846         ioctl_args->done = hpt_ioctl_done;
  847         ioctl_args->ioctl_cmnd = (void *)1;
  848 
  849         hpt_lock_vbus(vbus_ext);
  850         ldm_ioctl((PVBUS)vbus_ext->vbus, ioctl_args);
  851 
  852         while (ioctl_args->ioctl_cmnd) {
  853                 if (hpt_sleep(vbus_ext, ioctl_args, PPAUSE, "hptctl", HPT_OSM_TIMEOUT)==0)
  854                         break;
  855                 ldm_reset_vbus((PVBUS)vbus_ext->vbus);
  856                 __hpt_do_tasks(vbus_ext);
  857         }
  858 
  859         /* KdPrint(("ioctl %x result %d", ioctl_args->dwIoControlCode, ioctl_args->result)); */
  860 
  861         hpt_unlock_vbus(vbus_ext);
  862 }
  863 
  864 static void hpt_do_ioctl(IOCTL_ARG *ioctl_args)
  865 {
  866         PVBUS vbus;
  867         PVBUS_EXT vbus_ext;
  868         
  869         ldm_for_each_vbus(vbus, vbus_ext) {
  870                 __hpt_do_ioctl(vbus_ext, ioctl_args);
  871                 if (ioctl_args->result!=HPT_IOCTL_RESULT_WRONG_VBUS)
  872                         return;
  873         }
  874 }
  875 
  876 #define HPT_DO_IOCTL(code, inbuf, insize, outbuf, outsize) ({\
  877         IOCTL_ARG arg;\
  878         arg.dwIoControlCode = code;\
  879         arg.lpInBuffer = inbuf;\
  880         arg.lpOutBuffer = outbuf;\
  881         arg.nInBufferSize = insize;\
  882         arg.nOutBufferSize = outsize;\
  883         arg.lpBytesReturned = 0;\
  884         hpt_do_ioctl(&arg);\
  885         arg.result;\
  886 })
  887 
  888 #define DEVICEID_VALID(id) ((id) && ((HPT_U32)(id)!=0xffffffff))
  889 
  890 static int hpt_get_logical_devices(DEVICEID * pIds, int nMaxCount)
  891 {
  892         int i;
  893         HPT_U32 count = nMaxCount-1;
  894         
  895         if (HPT_DO_IOCTL(HPT_IOCTL_GET_LOGICAL_DEVICES,
  896                         &count, sizeof(HPT_U32), pIds, sizeof(DEVICEID)*nMaxCount))
  897                 return -1;
  898 
  899         nMaxCount = (int)pIds[0];
  900         for (i=0; i<nMaxCount; i++) pIds[i] = pIds[i+1];
  901         return nMaxCount;
  902 }
  903 
  904 static int hpt_get_device_info_v3(DEVICEID id, PLOGICAL_DEVICE_INFO_V3 pInfo)
  905 {
  906         return HPT_DO_IOCTL(HPT_IOCTL_GET_DEVICE_INFO_V3,
  907                                 &id, sizeof(DEVICEID), pInfo, sizeof(LOGICAL_DEVICE_INFO_V3));
  908 }
  909 
  910 /* not belong to this file logically, but we want to use ioctl interface */
  911 static int __hpt_stop_tasks(PVBUS_EXT vbus_ext, DEVICEID id)
  912 {
  913         LOGICAL_DEVICE_INFO_V3 devinfo;
  914         int i, result;
  915         DEVICEID param[2] = { id, 0 };
  916         
  917         if (hpt_get_device_info_v3(id, &devinfo))
  918                 return -1;
  919                 
  920         if (devinfo.Type!=LDT_ARRAY)
  921                 return -1;
  922                 
  923         if (devinfo.u.array.Flags & ARRAY_FLAG_REBUILDING)
  924                 param[1] = AS_REBUILD_ABORT;
  925         else if (devinfo.u.array.Flags & ARRAY_FLAG_VERIFYING)
  926                 param[1] = AS_VERIFY_ABORT;
  927         else if (devinfo.u.array.Flags & ARRAY_FLAG_INITIALIZING)
  928                 param[1] = AS_INITIALIZE_ABORT;
  929         else if (devinfo.u.array.Flags & ARRAY_FLAG_TRANSFORMING)
  930                 param[1] = AS_TRANSFORM_ABORT;
  931         else
  932                 return -1;
  933 
  934         KdPrint(("SET_ARRAY_STATE(%x, %d)", param[0], param[1]));
  935         result = HPT_DO_IOCTL(HPT_IOCTL_SET_ARRAY_STATE,
  936                                 param, sizeof(param), 0, 0);
  937                                 
  938         for (i=0; i<devinfo.u.array.nDisk; i++)
  939                 if (DEVICEID_VALID(devinfo.u.array.Members[i]))
  940                         __hpt_stop_tasks(vbus_ext, devinfo.u.array.Members[i]);
  941                         
  942         return result;
  943 }
  944 
  945 static void hpt_stop_tasks(PVBUS_EXT vbus_ext)
  946 {
  947         DEVICEID ids[32];
  948         int i, count;
  949 
  950         count = hpt_get_logical_devices((DEVICEID *)&ids, sizeof(ids)/sizeof(ids[0]));
  951         
  952         for (i=0; i<count; i++)
  953                 __hpt_stop_tasks(vbus_ext, ids[i]);
  954 }
  955 
  956 static  d_open_t        hpt_open;
  957 static  d_close_t       hpt_close;
  958 static  d_ioctl_t       hpt_ioctl;
  959 static  int             hpt_rescan_bus(void);
  960 
  961 static struct cdevsw hpt_cdevsw = {
  962         .d_open =       hpt_open,
  963         .d_close =      hpt_close,
  964         .d_ioctl =      hpt_ioctl,
  965         .d_name =       driver_name,
  966         .d_version =    D_VERSION,
  967 };
  968 
  969 static struct intr_config_hook hpt_ich;
  970 
  971 /*
  972  * hpt_final_init will be called after all hpt_attach.
  973  */
  974 static void hpt_final_init(void *dummy)
  975 {
  976         int       i;
  977         PVBUS_EXT vbus_ext;
  978         PVBUS vbus;
  979         PHBA hba;
  980 
  981         /* Clear the config hook */
  982         config_intrhook_disestablish(&hpt_ich);
  983 
  984         /* allocate memory */
  985         i = 0;
  986         ldm_for_each_vbus(vbus, vbus_ext) {
  987                 if (hpt_alloc_mem(vbus_ext)) {
  988                         os_printk("out of memory");
  989                         return;
  990                 }
  991                 i++;
  992         }
  993 
  994         if (!i) {
  995                 if (bootverbose)
  996                         os_printk("no controller detected.");
  997                 return;
  998         }
  999 
 1000         /* initializing hardware */
 1001         ldm_for_each_vbus(vbus, vbus_ext) {
 1002                 /* make timer available here */
 1003                 mtx_init(&vbus_ext->lock, "hptsleeplock", NULL, MTX_DEF);
 1004                 callout_init_mtx(&vbus_ext->timer, &vbus_ext->lock, 0);
 1005                 if (hpt_init_vbus(vbus_ext)) {
 1006                         os_printk("fail to initialize hardware");
 1007                         break; /* FIXME */
 1008                 }
 1009         }
 1010 
 1011         /* register CAM interface */
 1012         ldm_for_each_vbus(vbus, vbus_ext) {
 1013                 struct cam_devq *devq;
 1014                 struct ccb_setasync     ccb;
 1015                 
 1016                 if (bus_dma_tag_create(NULL,/* parent */
 1017                                 4,      /* alignment */
 1018                                 BUS_SPACE_MAXADDR_32BIT+1, /* boundary */
 1019                                 BUS_SPACE_MAXADDR,      /* lowaddr */
 1020                                 BUS_SPACE_MAXADDR,      /* highaddr */
 1021                                 NULL, NULL,             /* filter, filterarg */
 1022                                 PAGE_SIZE * (os_max_sg_descriptors-1),  /* maxsize */
 1023                                 os_max_sg_descriptors,  /* nsegments */
 1024                                 0x10000,        /* maxsegsize */
 1025                                 BUS_DMA_WAITOK,         /* flags */
 1026                                 busdma_lock_mutex,      /* lockfunc */
 1027                                 &vbus_ext->lock,                /* lockfuncarg */
 1028                                 &vbus_ext->io_dmat      /* tag */))
 1029                 {
 1030                         return ;
 1031                 }
 1032 
 1033                 for (i=0; i<os_max_queue_comm; i++) {
 1034                         POS_CMDEXT ext = (POS_CMDEXT)malloc(sizeof(OS_CMDEXT), M_DEVBUF, M_WAITOK);
 1035                         if (!ext) {
 1036                                 os_printk("Can't alloc cmdext(%d)", i);
 1037                                 return ;
 1038                         }
 1039                         ext->vbus_ext = vbus_ext;
 1040                         ext->next = vbus_ext->cmdext_list;
 1041                         vbus_ext->cmdext_list = ext;
 1042         
 1043                         if (bus_dmamap_create(vbus_ext->io_dmat, 0, &ext->dma_map)) {
 1044                                 os_printk("Can't create dma map(%d)", i);
 1045                                 return ;
 1046                         }
 1047                         callout_init_mtx(&ext->timeout, &vbus_ext->lock, 0);
 1048                 }
 1049 
 1050                 if ((devq = cam_simq_alloc(os_max_queue_comm)) == NULL) {
 1051                         os_printk("cam_simq_alloc failed");
 1052                         return ;
 1053                 }
 1054 
 1055                 vbus_ext->sim = cam_sim_alloc(hpt_action, hpt_poll, driver_name,
 1056                                 vbus_ext, 0, &vbus_ext->lock, os_max_queue_comm,
 1057                                 /*tagged*/8,  devq);
 1058                                 
 1059                 if (!vbus_ext->sim) {
 1060                         os_printk("cam_sim_alloc failed");
 1061                         cam_simq_free(devq);
 1062                         return ;
 1063                 }
 1064 
 1065                 hpt_lock_vbus(vbus_ext);
 1066                 if (xpt_bus_register(vbus_ext->sim, NULL, 0) != CAM_SUCCESS) {
 1067                         os_printk("xpt_bus_register failed");
 1068                         cam_sim_free(vbus_ext->sim, /*free devq*/ TRUE);
 1069                         hpt_unlock_vbus(vbus_ext);
 1070                         vbus_ext->sim = NULL;
 1071                         return ;
 1072                 }
 1073         
 1074                 if (xpt_create_path(&vbus_ext->path, /*periph */ NULL,
 1075                                 cam_sim_path(vbus_ext->sim), CAM_TARGET_WILDCARD,
 1076                                 CAM_LUN_WILDCARD) != CAM_REQ_CMP)
 1077                 {
 1078                         os_printk("xpt_create_path failed");
 1079                         xpt_bus_deregister(cam_sim_path(vbus_ext->sim));
 1080                         cam_sim_free(vbus_ext->sim, /*free_devq*/TRUE);
 1081                         hpt_unlock_vbus(vbus_ext);
 1082                         vbus_ext->sim = NULL;
 1083                         return ;
 1084                 }
 1085                 hpt_unlock_vbus(vbus_ext);
 1086 
 1087                 xpt_setup_ccb(&ccb.ccb_h, vbus_ext->path, /*priority*/5);
 1088                 ccb.ccb_h.func_code = XPT_SASYNC_CB;
 1089                 ccb.event_enable = AC_LOST_DEVICE;
 1090                 ccb.callback = hpt_async;
 1091                 ccb.callback_arg = vbus_ext;
 1092                 xpt_action((union ccb *)&ccb);
 1093 
 1094                 for (hba = vbus_ext->hba_list; hba; hba = hba->next) {
 1095                         int rid = 0;
 1096                         if ((hba->irq_res = bus_alloc_resource_any(hba->pcidev,
 1097                                 SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE)) == NULL)
 1098                         {
 1099                                 os_printk("can't allocate interrupt");
 1100                                 return ;
 1101                         }
 1102                         
 1103                         if (bus_setup_intr(hba->pcidev, hba->irq_res, INTR_TYPE_CAM | INTR_MPSAFE,
 1104                                 NULL, hpt_pci_intr, vbus_ext, &hba->irq_handle)) 
 1105                         {
 1106                                 os_printk("can't set up interrupt");
 1107                                 return ;
 1108                         }
 1109                         hba->ldm_adapter.him->intr_control(hba->ldm_adapter.him_handle, HPT_TRUE);
 1110                 }
 1111 
 1112                 vbus_ext->shutdown_eh = EVENTHANDLER_REGISTER(shutdown_final, 
 1113                                                                         hpt_shutdown_vbus, vbus_ext, SHUTDOWN_PRI_DEFAULT);
 1114                 if (!vbus_ext->shutdown_eh)
 1115                         os_printk("Shutdown event registration failed");
 1116         }
 1117         
 1118         ldm_for_each_vbus(vbus, vbus_ext) {
 1119                 TASK_INIT(&vbus_ext->worker, 0, (task_fn_t *)hpt_do_tasks, vbus_ext);
 1120                 if (vbus_ext->tasks)
 1121                         TASK_ENQUEUE(&vbus_ext->worker);
 1122         }       
 1123 
 1124         make_dev(&hpt_cdevsw, DRIVER_MINOR, UID_ROOT, GID_OPERATOR,
 1125             S_IRUSR | S_IWUSR, "%s", driver_name);
 1126 }
 1127 
 1128 #if defined(KLD_MODULE)
 1129 
 1130 typedef struct driverlink *driverlink_t;
 1131 struct driverlink {
 1132         kobj_class_t    driver;
 1133         TAILQ_ENTRY(driverlink) link;   /* list of drivers in devclass */
 1134 };
 1135 
 1136 typedef TAILQ_HEAD(driver_list, driverlink) driver_list_t;
 1137 
 1138 struct devclass {
 1139         TAILQ_ENTRY(devclass) link;
 1140         devclass_t      parent;         /* parent in devclass hierarchy */
 1141         driver_list_t   drivers;     /* bus devclasses store drivers for bus */
 1142         char            *name;
 1143         device_t        *devices;       /* array of devices indexed by unit */
 1144         int             maxunit;        /* size of devices array */
 1145 };
 1146 
 1147 static void override_kernel_driver(void)
 1148 {
 1149         driverlink_t dl, dlfirst;
 1150         driver_t *tmpdriver;
 1151         devclass_t dc = devclass_find("pci");
 1152         
 1153         if (dc){
 1154                 dlfirst = TAILQ_FIRST(&dc->drivers);
 1155                 for (dl = dlfirst; dl; dl = TAILQ_NEXT(dl, link)) {
 1156                         if(strcmp(dl->driver->name, driver_name) == 0) {
 1157                                 tmpdriver=dl->driver;
 1158                                 dl->driver=dlfirst->driver;
 1159                                 dlfirst->driver=tmpdriver;
 1160                                 break;
 1161                         }
 1162                 }
 1163         }
 1164 }
 1165 
 1166 #else 
 1167 #define override_kernel_driver()
 1168 #endif
 1169 
 1170 static void hpt_init(void *dummy)
 1171 {
 1172         if (bootverbose)
 1173                 os_printk("%s %s", driver_name_long, driver_ver);
 1174 
 1175         override_kernel_driver();
 1176         init_config();
 1177 
 1178         hpt_ich.ich_func = hpt_final_init;
 1179         hpt_ich.ich_arg = NULL;
 1180         if (config_intrhook_establish(&hpt_ich) != 0) {
 1181                 printf("%s: cannot establish configuration hook\n",
 1182                     driver_name_long);
 1183         }
 1184 
 1185 }
 1186 SYSINIT(hptinit, SI_SUB_CONFIGURE, SI_ORDER_FIRST, hpt_init, NULL);
 1187 
 1188 /*
 1189  * CAM driver interface
 1190  */
 1191 static device_method_t driver_methods[] = {
 1192         /* Device interface */
 1193         DEVMETHOD(device_probe,         hpt_probe),
 1194         DEVMETHOD(device_attach,        hpt_attach),
 1195         DEVMETHOD(device_detach,        hpt_detach),
 1196         DEVMETHOD(device_shutdown,      hpt_shutdown),
 1197         DEVMETHOD_END
 1198 };
 1199 
 1200 static driver_t hpt_pci_driver = {
 1201         driver_name,
 1202         driver_methods,
 1203         sizeof(HBA)
 1204 };
 1205 
 1206 static devclass_t       hpt_devclass;
 1207 
 1208 #ifndef TARGETNAME
 1209 #error "no TARGETNAME found"
 1210 #endif
 1211 
 1212 /* use this to make TARGETNAME be expanded */
 1213 #define __DRIVER_MODULE(p1, p2, p3, p4, p5, p6) DRIVER_MODULE(p1, p2, p3, p4, p5, p6)
 1214 #define __MODULE_VERSION(p1, p2) MODULE_VERSION(p1, p2)
 1215 #define __MODULE_DEPEND(p1, p2, p3, p4, p5) MODULE_DEPEND(p1, p2, p3, p4, p5)
 1216 __DRIVER_MODULE(TARGETNAME, pci, hpt_pci_driver, hpt_devclass, 0, 0);
 1217 __MODULE_VERSION(TARGETNAME, 1);
 1218 __MODULE_DEPEND(TARGETNAME, cam, 1, 1, 1);
 1219 
 1220 static int hpt_open(struct cdev *dev, int flags, int devtype, struct thread *td)
 1221 {
 1222         return 0;
 1223 }
 1224 
 1225 static int hpt_close(struct cdev *dev, int flags, int devtype, struct thread *td)
 1226 {
 1227         return 0;
 1228 }
 1229 
 1230 static int hpt_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
 1231 {
 1232         PHPT_IOCTL_PARAM piop=(PHPT_IOCTL_PARAM)data;
 1233         IOCTL_ARG ioctl_args;
 1234         HPT_U32 bytesReturned = 0;
 1235 
 1236         switch (cmd){
 1237         case HPT_DO_IOCONTROL:
 1238         {       
 1239                 if (piop->Magic == HPT_IOCTL_MAGIC || piop->Magic == HPT_IOCTL_MAGIC32) {
 1240                         KdPrint(("ioctl=%x in=%p len=%d out=%p len=%d\n",
 1241                                 piop->dwIoControlCode,
 1242                                 piop->lpInBuffer,
 1243                                 piop->nInBufferSize,
 1244                                 piop->lpOutBuffer,
 1245                                 piop->nOutBufferSize));
 1246                         
 1247                 memset(&ioctl_args, 0, sizeof(ioctl_args));
 1248                 
 1249                 ioctl_args.dwIoControlCode = piop->dwIoControlCode;
 1250                 ioctl_args.nInBufferSize = piop->nInBufferSize;
 1251                 ioctl_args.nOutBufferSize = piop->nOutBufferSize;
 1252                 ioctl_args.lpBytesReturned = &bytesReturned;
 1253 
 1254                 if (ioctl_args.nInBufferSize) {
 1255                         ioctl_args.lpInBuffer = malloc(ioctl_args.nInBufferSize, M_DEVBUF, M_WAITOK);
 1256                         if (!ioctl_args.lpInBuffer)
 1257                                 goto invalid;
 1258                         if (copyin((void*)piop->lpInBuffer,
 1259                                         ioctl_args.lpInBuffer, piop->nInBufferSize))
 1260                                 goto invalid;
 1261                 }
 1262         
 1263                 if (ioctl_args.nOutBufferSize) {
 1264                         ioctl_args.lpOutBuffer = malloc(ioctl_args.nOutBufferSize, M_DEVBUF, M_WAITOK | M_ZERO);
 1265                         if (!ioctl_args.lpOutBuffer)
 1266                                 goto invalid;
 1267                 }
 1268                 
 1269                 hpt_do_ioctl(&ioctl_args);
 1270         
 1271                 if (ioctl_args.result==HPT_IOCTL_RESULT_OK) {
 1272                         if (piop->nOutBufferSize) {
 1273                                 if (copyout(ioctl_args.lpOutBuffer,
 1274                                         (void*)piop->lpOutBuffer, piop->nOutBufferSize))
 1275                                         goto invalid;
 1276                         }
 1277                         if (piop->lpBytesReturned) {
 1278                                 if (copyout(&bytesReturned,
 1279                                         (void*)piop->lpBytesReturned, sizeof(HPT_U32)))
 1280                                         goto invalid;
 1281                         }
 1282                         if (ioctl_args.lpInBuffer) free(ioctl_args.lpInBuffer, M_DEVBUF);
 1283                         if (ioctl_args.lpOutBuffer) free(ioctl_args.lpOutBuffer, M_DEVBUF);
 1284                         return 0;
 1285                 }
 1286 invalid:
 1287                 if (ioctl_args.lpInBuffer) free(ioctl_args.lpInBuffer, M_DEVBUF);
 1288                 if (ioctl_args.lpOutBuffer) free(ioctl_args.lpOutBuffer, M_DEVBUF);
 1289                 return EFAULT;
 1290         }
 1291         return EFAULT;
 1292         }
 1293 
 1294         case HPT_SCAN_BUS:
 1295         {
 1296                 return hpt_rescan_bus();
 1297         }
 1298         default:
 1299                 KdPrint(("invalid command!"));
 1300                 return EFAULT;
 1301         }       
 1302 
 1303 }
 1304 
 1305 static int      hpt_rescan_bus(void)
 1306 {
 1307         union ccb                       *ccb;
 1308         PVBUS                           vbus;
 1309         PVBUS_EXT                       vbus_ext;       
 1310                 
 1311         ldm_for_each_vbus(vbus, vbus_ext) {
 1312                 if ((ccb = xpt_alloc_ccb()) == NULL)
 1313                         return(ENOMEM);
 1314                 if (xpt_create_path(&ccb->ccb_h.path, NULL,
 1315                     cam_sim_path(vbus_ext->sim),
 1316                     CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 1317                         xpt_free_ccb(ccb);
 1318                         return(EIO);
 1319                 }
 1320                 xpt_rescan(ccb);
 1321         }
 1322         
 1323         return(0);      
 1324 }

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