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

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    1 /* $Id: osm_bsd.c,v 1.36 2010/05/11 03:12:11 lcn Exp $ */
    2 /*-
    3  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    4  *
    5  * HighPoint RAID Driver for FreeBSD
    6  * Copyright (C) 2005-2011 HighPoint Technologies, Inc.
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  * $FreeBSD$
   31  */
   32 #include <dev/hptnr/hptnr_config.h>
   33 #include <dev/hptnr/os_bsd.h>
   34 #include <dev/hptnr/hptintf.h>
   35 int msi = 0;
   36 int debug_flag = 0;
   37 static HIM *hpt_match(device_t dev, int scan)
   38 {
   39         PCI_ID pci_id;
   40         HIM *him;
   41         int i;
   42 
   43         for (him = him_list; him; him = him->next) {
   44                 for (i=0; him->get_supported_device_id(i, &pci_id); i++) {
   45                         if (scan && him->get_controller_count)
   46                                 him->get_controller_count(&pci_id,0,0);
   47                         if ((pci_get_vendor(dev) == pci_id.vid) &&
   48                                 (pci_get_device(dev) == pci_id.did)){
   49                                 return (him);
   50                         }
   51                 }
   52         }
   53 
   54         return (NULL);
   55 }
   56 
   57 static int hpt_probe(device_t dev)
   58 {
   59         HIM *him;
   60 
   61         him = hpt_match(dev, 0);
   62         if (him != NULL) {
   63                 KdPrint(("hpt_probe: adapter at PCI %d:%d:%d, IRQ %d",
   64                         pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev), pci_get_irq(dev)
   65                         ));
   66                 device_set_desc(dev, him->name);
   67                 return (BUS_PROBE_DEFAULT);
   68         }
   69 
   70         return (ENXIO);
   71 }
   72 
   73 static int hpt_attach(device_t dev)
   74 {
   75         PHBA hba = (PHBA)device_get_softc(dev);
   76         HIM *him;
   77         PCI_ID pci_id;
   78         HPT_UINT size;
   79         PVBUS vbus;
   80         PVBUS_EXT vbus_ext;
   81         
   82         KdPrint(("hpt_attach(%d/%d/%d)", pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev)));
   83 
   84         him = hpt_match(dev, 1);
   85         hba->ext_type = EXT_TYPE_HBA;
   86         hba->ldm_adapter.him = him;
   87 
   88         pci_enable_busmaster(dev);
   89 
   90         pci_id.vid = pci_get_vendor(dev);
   91         pci_id.did = pci_get_device(dev);
   92         pci_id.rev = pci_get_revid(dev);
   93         pci_id.subsys = (HPT_U32)(pci_get_subdevice(dev)) << 16 | pci_get_subvendor(dev);
   94 
   95         size = him->get_adapter_size(&pci_id);
   96         hba->ldm_adapter.him_handle = malloc(size, M_DEVBUF, M_WAITOK);
   97 
   98         hba->pcidev = dev;
   99         hba->pciaddr.tree = 0;
  100         hba->pciaddr.bus = pci_get_bus(dev);
  101         hba->pciaddr.device = pci_get_slot(dev);
  102         hba->pciaddr.function = pci_get_function(dev);
  103 
  104         if (!him->create_adapter(&pci_id, hba->pciaddr, hba->ldm_adapter.him_handle, hba)) {
  105                 free(hba->ldm_adapter.him_handle, M_DEVBUF);
  106                 return ENXIO;
  107         }
  108 
  109         os_printk("adapter at PCI %d:%d:%d, IRQ %d",
  110                 hba->pciaddr.bus, hba->pciaddr.device, hba->pciaddr.function, pci_get_irq(dev));
  111 
  112         if (!ldm_register_adapter(&hba->ldm_adapter)) {
  113                 size = ldm_get_vbus_size();
  114                 vbus_ext = malloc(sizeof(VBUS_EXT) + size, M_DEVBUF, M_WAITOK |
  115                         M_ZERO);
  116                 vbus_ext->ext_type = EXT_TYPE_VBUS;
  117                 ldm_create_vbus((PVBUS)vbus_ext->vbus, vbus_ext);
  118                 ldm_register_adapter(&hba->ldm_adapter);
  119         }
  120 
  121         ldm_for_each_vbus(vbus, vbus_ext) {
  122                 if (hba->ldm_adapter.vbus==vbus) {
  123                         hba->vbus_ext = vbus_ext;
  124                         hba->next = vbus_ext->hba_list;
  125                         vbus_ext->hba_list = hba;
  126                         break;
  127                 }
  128         }       
  129         return 0;
  130 }
  131 
  132 /*
  133  * Maybe we'd better to use the bus_dmamem_alloc to alloc DMA memory,
  134  * but there are some problems currently (alignment, etc).
  135  */
  136 static __inline void *__get_free_pages(int order)
  137 {
  138         /* don't use low memory - other devices may get starved */
  139         return contigmalloc(PAGE_SIZE<<order, 
  140                         M_DEVBUF, M_WAITOK, BUS_SPACE_MAXADDR_24BIT, BUS_SPACE_MAXADDR, PAGE_SIZE, 0);
  141 }
  142 
  143 static __inline void free_pages(void *p, int order)
  144 {
  145         contigfree(p, PAGE_SIZE<<order, M_DEVBUF);
  146 }
  147 
  148 static int hpt_alloc_mem(PVBUS_EXT vbus_ext)
  149 {
  150         PHBA hba;
  151         struct freelist *f;
  152         HPT_UINT i;
  153         void **p;
  154 
  155         for (hba = vbus_ext->hba_list; hba; hba = hba->next)
  156                 hba->ldm_adapter.him->get_meminfo(hba->ldm_adapter.him_handle);
  157 
  158         ldm_get_mem_info((PVBUS)vbus_ext->vbus, 0);
  159 
  160         for (f=vbus_ext->freelist_head; f; f=f->next) {
  161                 KdPrint(("%s: %d*%d=%d bytes",
  162                         f->tag, f->count, f->size, f->count*f->size));
  163                 for (i=0; i<f->count; i++) {
  164                         p = (void **)malloc(f->size, M_DEVBUF, M_WAITOK);
  165                         if (!p) return (ENXIO);
  166                         *p = f->head;
  167                         f->head = p;
  168                 }
  169         }
  170 
  171         for (f=vbus_ext->freelist_dma_head; f; f=f->next) {
  172                 int order, size, j;
  173 
  174                 HPT_ASSERT((f->size & (f->alignment-1))==0);
  175 
  176                 for (order=0, size=PAGE_SIZE; size<f->size; order++, size<<=1)
  177                         ;
  178 
  179                 KdPrint(("%s: %d*%d=%d bytes, order %d",
  180                         f->tag, f->count, f->size, f->count*f->size, order));
  181                 HPT_ASSERT(f->alignment<=PAGE_SIZE);
  182 
  183                 for (i=0; i<f->count;) {
  184                         p = (void **)__get_free_pages(order);
  185                         if (!p) return -1;
  186                         for (j = size/f->size; j && i<f->count; i++,j--) {
  187                                 *p = f->head;
  188                                 *(BUS_ADDRESS *)(p+1) = (BUS_ADDRESS)vtophys(p);
  189                                 f->head = p;
  190                                 p = (void **)((unsigned long)p + f->size);
  191                         }
  192                 }
  193         }
  194         
  195         HPT_ASSERT(PAGE_SIZE==DMAPOOL_PAGE_SIZE);
  196 
  197         for (i=0; i<os_max_cache_pages; i++) {
  198                 p = (void **)__get_free_pages(0);
  199                 if (!p) return -1;
  200                 HPT_ASSERT(((HPT_UPTR)p & (DMAPOOL_PAGE_SIZE-1))==0);
  201                 dmapool_put_page((PVBUS)vbus_ext->vbus, p, (BUS_ADDRESS)vtophys(p));
  202         }
  203 
  204         return 0;
  205 }
  206 
  207 static void hpt_free_mem(PVBUS_EXT vbus_ext)
  208 {
  209         struct freelist *f;
  210         void *p;
  211         int i;
  212         BUS_ADDRESS bus;
  213 
  214         for (f=vbus_ext->freelist_head; f; f=f->next) {
  215 #if DBG
  216                 if (f->count!=f->reserved_count) {
  217                         KdPrint(("memory leak for freelist %s (%d/%d)", f->tag, f->count, f->reserved_count));
  218                 }
  219 #endif
  220                 while ((p=freelist_get(f)))
  221                         free(p, M_DEVBUF);
  222         }
  223 
  224         for (i=0; i<os_max_cache_pages; i++) {
  225                 p = dmapool_get_page((PVBUS)vbus_ext->vbus, &bus);
  226                 HPT_ASSERT(p);
  227                 free_pages(p, 0);
  228         }
  229 
  230         for (f=vbus_ext->freelist_dma_head; f; f=f->next) {
  231                 int order, size;
  232 #if DBG
  233                 if (f->count!=f->reserved_count) {
  234                         KdPrint(("memory leak for dma freelist %s (%d/%d)", f->tag, f->count, f->reserved_count));
  235                 }
  236 #endif
  237                 for (order=0, size=PAGE_SIZE; size<f->size; order++, size<<=1) ;
  238 
  239                 while ((p=freelist_get_dma(f, &bus))) {
  240                         if (order)
  241                                 free_pages(p, order);
  242                         else {
  243                         /* can't free immediately since other blocks in this page may still be in the list */
  244                                 if (((HPT_UPTR)p & (PAGE_SIZE-1))==0)
  245                                         dmapool_put_page((PVBUS)vbus_ext->vbus, p, bus);
  246                         }
  247                 }
  248         }
  249         
  250         while ((p = dmapool_get_page((PVBUS)vbus_ext->vbus, &bus)))
  251                 free_pages(p, 0);
  252 }
  253 
  254 static int hpt_init_vbus(PVBUS_EXT vbus_ext)
  255 {
  256         PHBA hba;
  257 
  258         for (hba = vbus_ext->hba_list; hba; hba = hba->next)
  259                 if (!hba->ldm_adapter.him->initialize(hba->ldm_adapter.him_handle)) {
  260                         KdPrint(("fail to initialize %p", hba));
  261                         return -1;
  262                 }
  263 
  264         ldm_initialize_vbus((PVBUS)vbus_ext->vbus, &vbus_ext->hba_list->ldm_adapter);
  265         return 0;
  266 }
  267 
  268 static void hpt_flush_done(PCOMMAND pCmd)
  269 {
  270         PVDEV vd = pCmd->target;
  271 
  272         if (mIsArray(vd->type) && vd->u.array.transform && vd!=vd->u.array.transform->target) {
  273                 vd = vd->u.array.transform->target;
  274                 HPT_ASSERT(vd);
  275                 pCmd->target = vd;
  276                 pCmd->Result = RETURN_PENDING;
  277                 vdev_queue_cmd(pCmd);
  278                 return;
  279         }
  280 
  281         *(int *)pCmd->priv = 1;
  282         wakeup(pCmd);
  283 }
  284 
  285 /*
  286  * flush a vdev (without retry).
  287  */
  288 static int hpt_flush_vdev(PVBUS_EXT vbus_ext, PVDEV vd)
  289 {
  290         PCOMMAND pCmd;
  291         int result = 0, done;
  292         HPT_UINT count;
  293 
  294         KdPrint(("flusing dev %p", vd));
  295 
  296         hpt_assert_vbus_locked(vbus_ext);
  297 
  298         if (mIsArray(vd->type) && vd->u.array.transform)
  299                 count = max(vd->u.array.transform->source->cmds_per_request,
  300                                         vd->u.array.transform->target->cmds_per_request);
  301         else
  302                 count = vd->cmds_per_request;
  303 
  304         pCmd = ldm_alloc_cmds(vd->vbus, count);
  305 
  306         if (!pCmd) {
  307                 return -1;
  308         }
  309 
  310         pCmd->type = CMD_TYPE_FLUSH;
  311         pCmd->flags.hard_flush = 1;
  312         pCmd->target = vd;
  313         pCmd->done = hpt_flush_done;
  314         done = 0;
  315         pCmd->priv = &done;
  316 
  317         ldm_queue_cmd(pCmd);
  318         
  319         if (!done) {
  320                 while (hpt_sleep(vbus_ext, pCmd, PPAUSE, "hptfls", HPT_OSM_TIMEOUT)) {
  321                         ldm_reset_vbus(vd->vbus);
  322                 }
  323         }
  324 
  325         KdPrint(("flush result %d", pCmd->Result));
  326 
  327         if (pCmd->Result!=RETURN_SUCCESS)
  328                 result = -1;
  329 
  330         ldm_free_cmds(pCmd);
  331 
  332         return result;
  333 }
  334 
  335 static void hpt_stop_tasks(PVBUS_EXT vbus_ext);
  336 static void hpt_shutdown_vbus(PVBUS_EXT vbus_ext, int howto)
  337 {
  338         PVBUS     vbus = (PVBUS)vbus_ext->vbus;
  339         PHBA hba;
  340         int i;
  341         
  342         KdPrint(("hpt_shutdown_vbus"));
  343 
  344         /* stop all ctl tasks and disable the worker taskqueue */
  345         hpt_stop_tasks(vbus_ext);
  346         hpt_lock_vbus(vbus_ext);
  347         vbus_ext->worker.ta_context = 0;
  348 
  349         /* flush devices */
  350         for (i=0; i<osm_max_targets; i++) {
  351                 PVDEV vd = ldm_find_target(vbus, i);
  352                 if (vd) {
  353                         /* retry once */
  354                         if (hpt_flush_vdev(vbus_ext, vd))
  355                                 hpt_flush_vdev(vbus_ext, vd);
  356                 }
  357         }
  358 
  359         ldm_shutdown(vbus);
  360         hpt_unlock_vbus(vbus_ext);
  361 
  362         ldm_release_vbus(vbus);
  363 
  364         for (hba=vbus_ext->hba_list; hba; hba=hba->next)
  365                 bus_teardown_intr(hba->pcidev, hba->irq_res, hba->irq_handle);
  366 
  367         hpt_free_mem(vbus_ext);
  368 
  369         while ((hba=vbus_ext->hba_list)) {
  370                 vbus_ext->hba_list = hba->next;
  371                 free(hba->ldm_adapter.him_handle, M_DEVBUF);
  372         }
  373 
  374         callout_drain(&vbus_ext->timer);
  375         mtx_destroy(&vbus_ext->lock);
  376         free(vbus_ext, M_DEVBUF);
  377         KdPrint(("hpt_shutdown_vbus done"));
  378 }
  379 
  380 static void __hpt_do_tasks(PVBUS_EXT vbus_ext)
  381 {
  382         OSM_TASK *tasks;
  383 
  384         tasks = vbus_ext->tasks;
  385         vbus_ext->tasks = 0;
  386 
  387         while (tasks) {
  388                 OSM_TASK *t = tasks;
  389                 tasks = t->next;
  390                 t->next = 0;
  391                 t->func(vbus_ext->vbus, t->data);
  392         }
  393 }
  394 
  395 static void hpt_do_tasks(PVBUS_EXT vbus_ext, int pending)
  396 {
  397         if(vbus_ext){
  398                 hpt_lock_vbus(vbus_ext);
  399                 __hpt_do_tasks(vbus_ext);
  400                 hpt_unlock_vbus(vbus_ext);
  401         }
  402 }
  403 
  404 static void hpt_action(struct cam_sim *sim, union ccb *ccb);
  405 static void hpt_poll(struct cam_sim *sim);
  406 static void hpt_async(void * callback_arg, u_int32_t code, struct cam_path * path, void * arg);
  407 static void hpt_pci_intr(void *arg);
  408 
  409 static __inline POS_CMDEXT cmdext_get(PVBUS_EXT vbus_ext)
  410 {
  411         POS_CMDEXT p = vbus_ext->cmdext_list;
  412         if (p)
  413                 vbus_ext->cmdext_list = p->next;
  414         return p;
  415 }
  416 
  417 static __inline void cmdext_put(POS_CMDEXT p)
  418 {
  419         p->next = p->vbus_ext->cmdext_list;
  420         p->vbus_ext->cmdext_list = p;
  421 }
  422 
  423 static void hpt_timeout(void *arg)
  424 {
  425         PCOMMAND pCmd = (PCOMMAND)arg;
  426         POS_CMDEXT ext = (POS_CMDEXT)pCmd->priv;
  427         
  428         KdPrint(("pCmd %p timeout", pCmd));
  429         
  430         ldm_reset_vbus((PVBUS)ext->vbus_ext->vbus);
  431 }
  432 
  433 static void os_cmddone(PCOMMAND pCmd)
  434 {
  435         POS_CMDEXT ext = (POS_CMDEXT)pCmd->priv;
  436         union ccb *ccb = ext->ccb;
  437         HPT_U8 *cdb;
  438                 
  439         if (ccb->ccb_h.flags & CAM_CDB_POINTER)
  440                 cdb = ccb->csio.cdb_io.cdb_ptr;
  441         else
  442                 cdb = ccb->csio.cdb_io.cdb_bytes;
  443 
  444         KdPrint(("os_cmddone(%p, %d)", pCmd, pCmd->Result));
  445 
  446         callout_stop(&ext->timeout);
  447         switch(cdb[0]) {
  448                 case 0x85: /*ATA_16*/
  449                 case 0xA1: /*ATA_12*/
  450                 {
  451                         PassthroughCmd *passthru = &pCmd->uCmd.Passthrough;
  452                         HPT_U8 *sense_buffer = (HPT_U8 *)&ccb->csio.sense_data;
  453                         memset(&ccb->csio.sense_data, 0,sizeof(ccb->csio.sense_data));
  454 
  455                         sense_buffer[0] = 0x72; /* Response Code */
  456                         sense_buffer[7] = 14; /* Additional Sense Length */
  457         
  458                         sense_buffer[8] = 0x9; /* ATA Return Descriptor */
  459                         sense_buffer[9] = 0xc; /* Additional Descriptor Length */
  460                         sense_buffer[11] = (HPT_U8)passthru->bFeaturesReg; /* Error */
  461                         sense_buffer[13] = (HPT_U8)passthru->bSectorCountReg;  /* Sector Count (7:0) */
  462                         sense_buffer[15] = (HPT_U8)passthru->bLbaLowReg; /* LBA Low (7:0) */
  463                         sense_buffer[17] = (HPT_U8)passthru->bLbaMidReg; /* LBA Mid (7:0) */
  464                         sense_buffer[19] = (HPT_U8)passthru->bLbaHighReg; /* LBA High (7:0) */
  465         
  466                         if ((cdb[0] == 0x85) && (cdb[1] & 0x1))
  467                         {
  468                                 sense_buffer[10] = 1;
  469                                 sense_buffer[12] = (HPT_U8)(passthru->bSectorCountReg >> 8); /* Sector Count (15:8) */
  470                                 sense_buffer[14] = (HPT_U8)(passthru->bLbaLowReg >> 8); /* LBA Low (15:8) */
  471                                 sense_buffer[16] = (HPT_U8)(passthru->bLbaMidReg >> 8); /* LBA Mid (15:8) */
  472                                 sense_buffer[18] = (HPT_U8)(passthru->bLbaHighReg >> 8); /* LBA High (15:8) */
  473                         }
  474         
  475                         sense_buffer[20] = (HPT_U8)passthru->bDriveHeadReg; /* Device */
  476                         sense_buffer[21] = (HPT_U8)passthru->bCommandReg; /* Status */
  477                         KdPrint(("sts 0x%x err 0x%x low 0x%x mid 0x%x hig 0x%x dh 0x%x sc 0x%x",
  478                                          passthru->bCommandReg,
  479                                          passthru->bFeaturesReg,
  480                                          passthru->bLbaLowReg,
  481                                          passthru->bLbaMidReg,
  482                                          passthru->bLbaHighReg,
  483                                          passthru->bDriveHeadReg,
  484                                          passthru->bSectorCountReg));
  485                         KdPrint(("result:0x%x,bFeaturesReg:0x%04x,bSectorCountReg:0x%04x,LBA:0x%04x%04x%04x ",
  486                                 pCmd->Result,passthru->bFeaturesReg,passthru->bSectorCountReg,
  487                                 passthru->bLbaHighReg,passthru->bLbaMidReg,passthru->bLbaLowReg));
  488                 }
  489                 default:
  490                         break;
  491         }
  492 
  493         switch(pCmd->Result) {
  494         case RETURN_SUCCESS:
  495                 ccb->ccb_h.status = CAM_REQ_CMP;
  496                 break;
  497         case RETURN_BAD_DEVICE:
  498                 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
  499                 break;
  500         case RETURN_DEVICE_BUSY:
  501                 ccb->ccb_h.status = CAM_BUSY;
  502                 break;
  503         case RETURN_INVALID_REQUEST:
  504                 ccb->ccb_h.status = CAM_REQ_INVALID;
  505                 break;
  506         case RETURN_SELECTION_TIMEOUT:
  507                 ccb->ccb_h.status = CAM_SEL_TIMEOUT;
  508                 break;
  509         case RETURN_RETRY:
  510                 ccb->ccb_h.status = CAM_BUSY;
  511                 break;
  512         default:
  513                 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR;
  514                 break;
  515         }
  516 
  517         if (pCmd->flags.data_in) {
  518                 bus_dmamap_sync(ext->vbus_ext->io_dmat, ext->dma_map, BUS_DMASYNC_POSTREAD);
  519         }
  520         else if (pCmd->flags.data_out) {
  521                 bus_dmamap_sync(ext->vbus_ext->io_dmat, ext->dma_map, BUS_DMASYNC_POSTWRITE);
  522         }
  523         
  524         bus_dmamap_unload(ext->vbus_ext->io_dmat, ext->dma_map);
  525 
  526         cmdext_put(ext);
  527         ldm_free_cmds(pCmd);
  528         xpt_done(ccb);
  529 }
  530 
  531 static int os_buildsgl(PCOMMAND pCmd, PSG pSg, int logical)
  532 {
  533         /* since we have provided physical sg, nobody will ask us to build physical sg */
  534         HPT_ASSERT(0);
  535         return FALSE;
  536 }
  537 
  538 static void hpt_io_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
  539 {
  540         PCOMMAND pCmd = (PCOMMAND)arg;
  541         POS_CMDEXT ext = (POS_CMDEXT)pCmd->priv;
  542         PSG psg = pCmd->psg;
  543         int idx;
  544         
  545         HPT_ASSERT(pCmd->flags.physical_sg);
  546         
  547         if (error)
  548                 panic("busdma error");
  549                 
  550         HPT_ASSERT(nsegs<=os_max_sg_descriptors);
  551 
  552         if (nsegs != 0) {
  553                 for (idx = 0; idx < nsegs; idx++, psg++) {
  554                         psg->addr.bus = segs[idx].ds_addr;
  555                         psg->size = segs[idx].ds_len;
  556                         psg->eot = 0;
  557                 }
  558                 psg[-1].eot = 1;
  559         
  560                 if (pCmd->flags.data_in) {
  561                         bus_dmamap_sync(ext->vbus_ext->io_dmat, ext->dma_map,
  562                             BUS_DMASYNC_PREREAD);
  563                 }
  564                 else if (pCmd->flags.data_out) {
  565                         bus_dmamap_sync(ext->vbus_ext->io_dmat, ext->dma_map,
  566                             BUS_DMASYNC_PREWRITE);
  567                 }
  568         }
  569 
  570         callout_reset(&ext->timeout, HPT_OSM_TIMEOUT, hpt_timeout, pCmd);
  571         ldm_queue_cmd(pCmd);
  572 }
  573 
  574 static void hpt_scsi_io(PVBUS_EXT vbus_ext, union ccb *ccb)
  575 {
  576         PVBUS vbus = (PVBUS)vbus_ext->vbus;
  577         PVDEV vd;
  578         PCOMMAND pCmd;
  579         POS_CMDEXT ext;
  580         HPT_U8 *cdb;
  581 
  582         if (ccb->ccb_h.flags & CAM_CDB_POINTER)
  583                 cdb = ccb->csio.cdb_io.cdb_ptr;
  584         else
  585                 cdb = ccb->csio.cdb_io.cdb_bytes;
  586         
  587         KdPrint(("hpt_scsi_io: ccb %x id %d lun %d cdb %x-%x-%x",
  588                 ccb,
  589                 ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
  590                 *(HPT_U32 *)&cdb[0], *(HPT_U32 *)&cdb[4], *(HPT_U32 *)&cdb[8]
  591         ));
  592 
  593         /* ccb->ccb_h.path_id is not our bus id - don't check it */
  594         if (ccb->ccb_h.target_lun != 0 ||
  595                 ccb->ccb_h.target_id >= osm_max_targets ||
  596                 (ccb->ccb_h.flags & CAM_CDB_PHYS))
  597         {
  598                 ccb->ccb_h.status = CAM_TID_INVALID;
  599                 xpt_done(ccb);
  600                 return;
  601         }
  602 
  603         vd = ldm_find_target(vbus, ccb->ccb_h.target_id);
  604 
  605         if (!vd) {
  606                 ccb->ccb_h.status = CAM_SEL_TIMEOUT;
  607                 xpt_done(ccb);
  608                 return;
  609         }
  610    
  611         switch (cdb[0]) {
  612         case TEST_UNIT_READY:
  613         case START_STOP_UNIT:
  614         case SYNCHRONIZE_CACHE:
  615                 ccb->ccb_h.status = CAM_REQ_CMP;
  616                 break;
  617 
  618         case 0x85: /*ATA_16*/
  619         case 0xA1: /*ATA_12*/
  620         {
  621                 int error;
  622                 HPT_U8 prot;
  623                 PassthroughCmd *passthru;       
  624                 
  625                 if (mIsArray(vd->type)) {
  626                         ccb->ccb_h.status = CAM_REQ_INVALID;
  627                         break;
  628                 }
  629                 
  630                 HPT_ASSERT(vd->type == VD_RAW && vd->u.raw.legacy_disk);
  631                 
  632                 prot = (cdb[1] & 0x1e) >> 1;
  633                 
  634                 
  635                 if (prot < 3 || prot > 5) 
  636                 {
  637                         ccb->ccb_h.status = CAM_REQ_INVALID;
  638                         break;
  639                 }
  640                 
  641                 pCmd = ldm_alloc_cmds(vbus, vd->cmds_per_request);
  642                 if (!pCmd) {
  643                         HPT_ASSERT(0);
  644                         ccb->ccb_h.status = CAM_BUSY;
  645                         break;
  646                 }
  647                 
  648                 passthru = &pCmd->uCmd.Passthrough;
  649                 if (cdb[0] == 0x85/*ATA_16*/) {
  650                         if (cdb[1] & 0x1) {
  651                                 passthru->bFeaturesReg =
  652                                         ((HPT_U16)cdb[3] << 8)
  653                                                 | cdb[4];
  654                                 passthru->bSectorCountReg =
  655                                         ((HPT_U16)cdb[5] << 8) |
  656                                                 cdb[6];
  657                                 passthru->bLbaLowReg =
  658                                         ((HPT_U16)cdb[7] << 8) |
  659                                                 cdb[8];
  660                                 passthru->bLbaMidReg =
  661                                         ((HPT_U16)cdb[9] << 8) |
  662                                                 cdb[10];
  663                                 passthru->bLbaHighReg =
  664                                         ((HPT_U16)cdb[11] << 8) |
  665                                                 cdb[12];
  666                         } else {
  667                                 passthru->bFeaturesReg = cdb[4];
  668                                 passthru->bSectorCountReg = cdb[6];
  669                                 passthru->bLbaLowReg = cdb[8];
  670                                 passthru->bLbaMidReg = cdb[10];
  671                                 passthru->bLbaHighReg = cdb[12];
  672                         }
  673                         passthru->bDriveHeadReg = cdb[13];
  674                         passthru->bCommandReg = cdb[14];
  675                 
  676                 } else { /*ATA_12*/
  677                 
  678                         passthru->bFeaturesReg = cdb[3];
  679                         passthru->bSectorCountReg = cdb[4];
  680                         passthru->bLbaLowReg = cdb[5];
  681                         passthru->bLbaMidReg = cdb[6];
  682                         passthru->bLbaHighReg = cdb[7];
  683                         passthru->bDriveHeadReg = cdb[8];
  684                         passthru->bCommandReg = cdb[9];
  685                 }
  686                 
  687                 if (cdb[1] & 0xe0) {
  688                         
  689                 
  690                         if (!(passthru->bCommandReg == ATA_CMD_READ_MULTI ||
  691                                 passthru->bCommandReg == ATA_CMD_READ_MULTI_EXT ||
  692                                 passthru->bCommandReg == ATA_CMD_WRITE_MULTI ||
  693                                 passthru->bCommandReg == ATA_CMD_WRITE_MULTI_EXT ||
  694                                 passthru->bCommandReg == ATA_CMD_WRITE_MULTI_FUA_EXT)
  695                                 ) {
  696                                 goto error;
  697                         }
  698                 }
  699                 
  700                 
  701                 if (passthru->bFeaturesReg == ATA_SET_FEATURES_XFER &&
  702                         passthru->bCommandReg == ATA_CMD_SET_FEATURES) {
  703                         goto error;
  704                 }
  705 
  706                 
  707                 passthru->nSectors = ccb->csio.dxfer_len/ATA_SECTOR_SIZE;
  708                 switch (prot) {
  709                         default: /*None data*/
  710                                 break;
  711                         case 4: /*PIO data in, T_DIR=1 match check*/
  712                                 if ((cdb[2] & 3) && 
  713                                         (cdb[2] & 0x8) == 0)
  714                                 {
  715                                         OsPrint(("PIO data in, T_DIR=1 match check"));
  716                                         goto error;
  717                                 }
  718                                 pCmd->flags.data_in = 1;
  719                                                 break;
  720                         case 5: /*PIO data out, T_DIR=0 match check*/
  721                                 if ((cdb[2] & 3) && 
  722                                         (cdb[2] & 0x8))
  723                                 {
  724                                         OsPrint(("PIO data out, T_DIR=0 match check"));
  725                                         goto error;
  726                                 }
  727 
  728                                 pCmd->flags.data_out = 1;
  729                                 break;
  730                 }
  731                 pCmd->type = CMD_TYPE_PASSTHROUGH;
  732                 pCmd->priv = ext = cmdext_get(vbus_ext);
  733                 HPT_ASSERT(ext);
  734                 ext->ccb = ccb;
  735                 pCmd->target = vd;
  736                 pCmd->done = os_cmddone;
  737                 pCmd->buildsgl = os_buildsgl;
  738                 pCmd->psg = ext->psg;
  739 
  740                 if(!ccb->csio.dxfer_len)
  741                 {
  742                         ldm_queue_cmd(pCmd);
  743                         return;
  744                 }
  745                 pCmd->flags.physical_sg = 1;
  746                 error = bus_dmamap_load_ccb(vbus_ext->io_dmat, 
  747                                         ext->dma_map, ccb, 
  748                                         hpt_io_dmamap_callback, pCmd,
  749                                         BUS_DMA_WAITOK
  750                                         );
  751                 KdPrint(("bus_dmamap_load return %d", error));
  752                 if (error && error!=EINPROGRESS) {
  753                         os_printk("bus_dmamap_load error %d", error);
  754                         cmdext_put(ext);
  755                         ldm_free_cmds(pCmd);
  756                         ccb->ccb_h.status = CAM_REQ_CMP_ERR;
  757                         xpt_done(ccb);
  758                 }
  759                 return;
  760 error:
  761                 ldm_free_cmds(pCmd);
  762                 ccb->ccb_h.status = CAM_REQ_INVALID;
  763                 break;
  764         }
  765 
  766         case INQUIRY:
  767         {
  768                 PINQUIRYDATA inquiryData;
  769                 HIM_DEVICE_CONFIG devconf;
  770                 HPT_U8 *rbuf;
  771 
  772                 memset(ccb->csio.data_ptr, 0, ccb->csio.dxfer_len);
  773                 inquiryData = (PINQUIRYDATA)ccb->csio.data_ptr;
  774 
  775                 if (cdb[1] & 1) {
  776                         rbuf = (HPT_U8 *)inquiryData;
  777                         switch(cdb[2]) {
  778                         case 0:
  779                                 rbuf[0] = 0;
  780                                 rbuf[1] = 0;
  781                                 rbuf[2] = 0;
  782                                 rbuf[3] = 3;
  783                                 rbuf[4] = 0;
  784                                 rbuf[5] = 0x80;
  785                                 rbuf[6] = 0x83;
  786                                 ccb->ccb_h.status = CAM_REQ_CMP;
  787                                 break;
  788                         case 0x80: {
  789                                 rbuf[0] = 0;
  790                                 rbuf[1] = 0x80;
  791                                 rbuf[2] = 0;
  792                                 if (vd->type == VD_RAW) {
  793                                         rbuf[3] = 20;
  794                                         vd->u.raw.him->get_device_config(vd->u.raw.phy_dev,&devconf);
  795                                         memcpy(&rbuf[4], devconf.pIdentifyData->SerialNumber, 20);
  796                                         ldm_ide_fixstring(&rbuf[4], 20);
  797                                 } else {
  798                                         rbuf[3] = 1;
  799                                         rbuf[4] = 0x20;
  800                                 }
  801                                 ccb->ccb_h.status = CAM_REQ_CMP;                                
  802                                 break;
  803                         }
  804                         case 0x83:
  805                                 rbuf[0] = 0;
  806                                 rbuf[1] = 0x83;
  807                                 rbuf[2] = 0;
  808                                 rbuf[3] = 12; 
  809                                 rbuf[4] = 1;
  810                                 rbuf[5] = 2; 
  811                                 rbuf[6] = 0;
  812                                 rbuf[7] = 8; 
  813                                 rbuf[8] = 0; 
  814                                 rbuf[9] = 0x19;
  815                                 rbuf[10] = 0x3C;
  816                                 rbuf[11] = 0;
  817                                 rbuf[12] = 0;
  818                                 rbuf[13] = 0;
  819                                 rbuf[14] = 0;
  820                                 rbuf[15] = 0;
  821                                 ccb->ccb_h.status = CAM_REQ_CMP;                        
  822                                 break;
  823                         default:
  824                                 ccb->ccb_h.status = CAM_REQ_INVALID;
  825                                 break;
  826                         }
  827 
  828                         break;
  829                 } 
  830                 else if (cdb[2]) {      
  831                         ccb->ccb_h.status = CAM_REQ_INVALID;
  832                         break;
  833                 }
  834 
  835                 inquiryData->DeviceType = 0; /*DIRECT_ACCESS_DEVICE*/
  836                 inquiryData->Versions = 5; /*SPC-3*/
  837                 inquiryData->ResponseDataFormat = 2;
  838                 inquiryData->AdditionalLength = 0x5b;
  839                 inquiryData->CommandQueue = 1;
  840 
  841                 if (ccb->csio.dxfer_len > 63) {
  842                         rbuf = (HPT_U8 *)inquiryData;                   
  843                         rbuf[58] = 0x60;
  844                         rbuf[59] = 0x3;
  845                         
  846                         rbuf[64] = 0x3; 
  847                         rbuf[66] = 0x3; 
  848                         rbuf[67] = 0x20;
  849                         
  850                 }
  851                 
  852                 if (vd->type == VD_RAW) {
  853                         vd->u.raw.him->get_device_config(vd->u.raw.phy_dev,&devconf);
  854 
  855                         if ((devconf.pIdentifyData->GeneralConfiguration & 0x80))
  856                                 inquiryData->RemovableMedia = 1;
  857 
  858                         
  859                         memcpy(&inquiryData->VendorId, "ATA     ", 8);
  860                         memcpy(&inquiryData->ProductId, devconf.pIdentifyData->ModelNumber, 16);
  861                         ldm_ide_fixstring((HPT_U8 *)&inquiryData->ProductId, 16);
  862                         memcpy(&inquiryData->ProductRevisionLevel, devconf.pIdentifyData->FirmwareRevision, 4);
  863                         ldm_ide_fixstring((HPT_U8 *)&inquiryData->ProductRevisionLevel, 4);
  864                         if (inquiryData->ProductRevisionLevel[0] == 0 || inquiryData->ProductRevisionLevel[0] == ' ')
  865                                 memcpy(&inquiryData->ProductRevisionLevel, "n/a ", 4);
  866                 } else {
  867                         memcpy(&inquiryData->VendorId, "HPT     ", 8);
  868                         snprintf((char *)&inquiryData->ProductId, 16, "DISK_%d_%d        ",
  869                                 os_get_vbus_seq(vbus_ext), vd->target_id);
  870                         inquiryData->ProductId[15] = ' ';
  871                         memcpy(&inquiryData->ProductRevisionLevel, "4.00", 4);
  872                 }
  873 
  874                 ccb->ccb_h.status = CAM_REQ_CMP;
  875                 break;
  876         }
  877         case READ_CAPACITY:
  878         {
  879                 HPT_U8 *rbuf = ccb->csio.data_ptr;
  880                 HPT_U32 cap;
  881                 HPT_U8 sector_size_shift = 0;
  882                 HPT_U64 new_cap;
  883                 HPT_U32 sector_size = 0;
  884 
  885                 if (mIsArray(vd->type))
  886                         sector_size_shift = vd->u.array.sector_size_shift;
  887                 else{
  888                         if(vd->type == VD_RAW){
  889                                 sector_size = vd->u.raw.logical_sector_size;
  890                         }
  891                 
  892                         switch (sector_size) {
  893                                 case 0x1000:
  894                                         KdPrint(("set 4k setctor size in READ_CAPACITY"));
  895                                         sector_size_shift = 3;
  896                                         break;
  897                                 default:
  898                                         break;
  899                         }                       
  900                 }
  901                 new_cap = vd->capacity >> sector_size_shift;
  902                 
  903                 if (new_cap > 0xfffffffful)
  904                         cap = 0xffffffff;
  905                 else
  906                         cap = new_cap - 1;
  907                         
  908                 rbuf[0] = (HPT_U8)(cap>>24);
  909                 rbuf[1] = (HPT_U8)(cap>>16);
  910                 rbuf[2] = (HPT_U8)(cap>>8);
  911                 rbuf[3] = (HPT_U8)cap;
  912                 rbuf[4] = 0;
  913                 rbuf[5] = 0;
  914                 rbuf[6] = 2 << sector_size_shift;
  915                 rbuf[7] = 0;
  916 
  917                 ccb->ccb_h.status = CAM_REQ_CMP;
  918                 break;
  919         }
  920         
  921         case REPORT_LUNS:
  922         {
  923                 HPT_U8 *rbuf = ccb->csio.data_ptr;
  924                 memset(rbuf, 0, 16);
  925                 rbuf[3] = 8;
  926                 ccb->ccb_h.status = CAM_REQ_CMP;
  927                 break;                          
  928         }
  929         case SERVICE_ACTION_IN: 
  930         {
  931                 HPT_U8 *rbuf = ccb->csio.data_ptr;
  932                 HPT_U64 cap = 0;
  933                 HPT_U8 sector_size_shift = 0;
  934                 HPT_U32 sector_size = 0;
  935 
  936                 if(mIsArray(vd->type))
  937                         sector_size_shift = vd->u.array.sector_size_shift;
  938                 else{
  939                         if(vd->type == VD_RAW){
  940                                 sector_size = vd->u.raw.logical_sector_size;
  941                         }
  942                 
  943                         switch (sector_size) {
  944                                 case 0x1000:
  945                                         KdPrint(("set 4k setctor size in SERVICE_ACTION_IN"));
  946                                         sector_size_shift = 3;
  947                                         break;
  948                                 default:
  949                                         break;
  950                         }                       
  951                 }
  952                 cap = (vd->capacity >> sector_size_shift) - 1;
  953                                         
  954                 rbuf[0] = (HPT_U8)(cap>>56);
  955                 rbuf[1] = (HPT_U8)(cap>>48);
  956                 rbuf[2] = (HPT_U8)(cap>>40);
  957                 rbuf[3] = (HPT_U8)(cap>>32);
  958                 rbuf[4] = (HPT_U8)(cap>>24);
  959                 rbuf[5] = (HPT_U8)(cap>>16);
  960                 rbuf[6] = (HPT_U8)(cap>>8);
  961                 rbuf[7] = (HPT_U8)cap;
  962                 rbuf[8] = 0;
  963                 rbuf[9] = 0;
  964                 rbuf[10] = 2 << sector_size_shift;
  965                 rbuf[11] = 0;
  966                 
  967                 if(!mIsArray(vd->type)){
  968                         rbuf[13] = vd->u.raw.logicalsectors_per_physicalsector;
  969                         rbuf[14] = (HPT_U8)((vd->u.raw.lowest_aligned >> 8) & 0x3f);
  970                         rbuf[15] = (HPT_U8)(vd->u.raw.lowest_aligned);
  971                 }
  972                 
  973                 ccb->ccb_h.status = CAM_REQ_CMP;
  974                 break;  
  975         }
  976         
  977         case READ_6:
  978         case READ_10:
  979         case READ_16:
  980         case WRITE_6:
  981         case WRITE_10:
  982         case WRITE_16:
  983         case 0x13:
  984         case 0x2f:
  985         case 0x8f: /* VERIFY_16 */
  986         {
  987                 int error;
  988                 HPT_U8 sector_size_shift = 0;
  989                 HPT_U32 sector_size = 0;
  990                 pCmd = ldm_alloc_cmds(vbus, vd->cmds_per_request);
  991                 if(!pCmd){
  992                         KdPrint(("Failed to allocate command!"));
  993                         ccb->ccb_h.status = CAM_BUSY;
  994                         break;
  995                 }
  996 
  997                 switch (cdb[0]) {
  998                 case READ_6:
  999                 case WRITE_6:
 1000                 case 0x13:
 1001                         pCmd->uCmd.Ide.Lba =  ((HPT_U32)cdb[1] << 16) | ((HPT_U32)cdb[2] << 8) | (HPT_U32)cdb[3];
 1002                         pCmd->uCmd.Ide.nSectors = (HPT_U16) cdb[4];
 1003                         break;
 1004                 case READ_16:
 1005                 case WRITE_16:
 1006                 case 0x8f: /* VERIFY_16 */
 1007                 {
 1008                         HPT_U64 block =
 1009                                 ((HPT_U64)cdb[2]<<56) |
 1010                                 ((HPT_U64)cdb[3]<<48) |
 1011                                 ((HPT_U64)cdb[4]<<40) |
 1012                                 ((HPT_U64)cdb[5]<<32) |
 1013                                 ((HPT_U64)cdb[6]<<24) |
 1014                                 ((HPT_U64)cdb[7]<<16) |
 1015                                 ((HPT_U64)cdb[8]<<8) |
 1016                                 ((HPT_U64)cdb[9]);
 1017                         pCmd->uCmd.Ide.Lba = block;
 1018                         pCmd->uCmd.Ide.nSectors = (HPT_U16)cdb[13] | ((HPT_U16)cdb[12]<<8);
 1019                         break;
 1020                 }
 1021                 
 1022                 default:
 1023                         pCmd->uCmd.Ide.Lba = (HPT_U32)cdb[5] | ((HPT_U32)cdb[4] << 8) | ((HPT_U32)cdb[3] << 16) | ((HPT_U32)cdb[2] << 24);
 1024                         pCmd->uCmd.Ide.nSectors = (HPT_U16) cdb[8] | ((HPT_U16)cdb[7]<<8);
 1025                         break;
 1026                 }
 1027 
 1028                 if(mIsArray(vd->type)) {
 1029                         sector_size_shift = vd->u.array.sector_size_shift;
 1030                 }
 1031                 else{
 1032                         if(vd->type == VD_RAW){
 1033                                 sector_size = vd->u.raw.logical_sector_size;
 1034                         }
 1035                         
 1036                         switch (sector_size) {
 1037                                 case 0x1000:
 1038                                         KdPrint(("<8>resize sector size from 4k to 512"));
 1039                                         sector_size_shift = 3;
 1040                                         break;
 1041                                 default:
 1042                                         break;
 1043                         }                       
 1044                 }
 1045                 pCmd->uCmd.Ide.Lba <<= sector_size_shift;
 1046                 pCmd->uCmd.Ide.nSectors <<= sector_size_shift;
 1047 
 1048                 
 1049                 switch (cdb[0]) {
 1050                 case READ_6:
 1051                 case READ_10:
 1052                 case READ_16:
 1053                         pCmd->flags.data_in = 1;
 1054                         break;
 1055                 case WRITE_6:
 1056                 case WRITE_10:
 1057                 case WRITE_16:
 1058                         pCmd->flags.data_out = 1;
 1059                         break;
 1060                 }
 1061                 pCmd->priv = ext = cmdext_get(vbus_ext);
 1062                 HPT_ASSERT(ext);
 1063                 ext->ccb = ccb;
 1064                 pCmd->target = vd;
 1065                 pCmd->done = os_cmddone;
 1066                 pCmd->buildsgl = os_buildsgl;
 1067                 pCmd->psg = ext->psg;
 1068                 pCmd->flags.physical_sg = 1;
 1069                 error = bus_dmamap_load_ccb(vbus_ext->io_dmat, 
 1070                                         ext->dma_map, ccb, 
 1071                                         hpt_io_dmamap_callback, pCmd,
 1072                                         BUS_DMA_WAITOK
 1073                                         );
 1074                 KdPrint(("bus_dmamap_load return %d", error));
 1075                 if (error && error!=EINPROGRESS) {
 1076                         os_printk("bus_dmamap_load error %d", error);
 1077                         cmdext_put(ext);
 1078                         ldm_free_cmds(pCmd);
 1079                         ccb->ccb_h.status = CAM_REQ_CMP_ERR;
 1080                         xpt_done(ccb);
 1081                 }
 1082                 return;
 1083         }
 1084 
 1085         default:
 1086                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1087                 break;
 1088         }
 1089 
 1090         xpt_done(ccb);
 1091         return;
 1092 }
 1093 
 1094 static void hpt_action(struct cam_sim *sim, union ccb *ccb)
 1095 {
 1096         PVBUS_EXT vbus_ext = (PVBUS_EXT)cam_sim_softc(sim);
 1097 
 1098         KdPrint(("hpt_action(fn=%d, id=%d)", ccb->ccb_h.func_code, ccb->ccb_h.target_id));
 1099 
 1100         hpt_assert_vbus_locked(vbus_ext);
 1101         switch (ccb->ccb_h.func_code) {
 1102         
 1103         case XPT_SCSI_IO:
 1104                 hpt_scsi_io(vbus_ext, ccb);
 1105                 return;
 1106 
 1107         case XPT_RESET_BUS:
 1108                 ldm_reset_vbus((PVBUS)vbus_ext->vbus);
 1109                 break;
 1110 
 1111         case XPT_GET_TRAN_SETTINGS:
 1112         case XPT_SET_TRAN_SETTINGS:
 1113                 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
 1114                 break;
 1115 
 1116         case XPT_CALC_GEOMETRY:
 1117                 ccb->ccg.heads = 255;
 1118                 ccb->ccg.secs_per_track = 63;
 1119                 ccb->ccg.cylinders = ccb->ccg.volume_size / (ccb->ccg.heads * ccb->ccg.secs_per_track);
 1120                 ccb->ccb_h.status = CAM_REQ_CMP;
 1121                 break;
 1122 
 1123         case XPT_PATH_INQ:
 1124         {
 1125                 struct ccb_pathinq *cpi = &ccb->cpi;
 1126 
 1127                 cpi->version_num = 1;
 1128                 cpi->hba_inquiry = PI_SDTR_ABLE;
 1129                 cpi->target_sprt = 0;
 1130                 cpi->hba_misc = PIM_NOBUSRESET;
 1131                 cpi->hba_eng_cnt = 0;
 1132                 cpi->max_target = osm_max_targets;
 1133                 cpi->max_lun = 0;
 1134                 cpi->unit_number = cam_sim_unit(sim);
 1135                 cpi->bus_id = cam_sim_bus(sim);
 1136                 cpi->initiator_id = osm_max_targets;
 1137                 cpi->base_transfer_speed = 3300;
 1138 
 1139                 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 1140                 strlcpy(cpi->hba_vid, "HPT   ", HBA_IDLEN);
 1141                 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 1142                 cpi->transport = XPORT_SPI;
 1143                 cpi->transport_version = 2;
 1144                 cpi->protocol = PROTO_SCSI;
 1145                 cpi->protocol_version = SCSI_REV_2;
 1146                 cpi->ccb_h.status = CAM_REQ_CMP;
 1147                 break;
 1148         }
 1149 
 1150         default:
 1151                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1152                 break;
 1153         }
 1154 
 1155         xpt_done(ccb);
 1156         return;
 1157 }
 1158 
 1159 static void hpt_pci_intr(void *arg)
 1160 {       
 1161         PVBUS_EXT vbus_ext = (PVBUS_EXT)arg;
 1162         hpt_lock_vbus(vbus_ext);
 1163         ldm_intr((PVBUS)vbus_ext->vbus);
 1164         hpt_unlock_vbus(vbus_ext);
 1165 }
 1166 
 1167 static void hpt_poll(struct cam_sim *sim)
 1168 {
 1169         PVBUS_EXT vbus_ext = cam_sim_softc(sim);
 1170         hpt_assert_vbus_locked(vbus_ext);
 1171         ldm_intr((PVBUS)vbus_ext->vbus);
 1172 }
 1173 
 1174 static void hpt_async(void * callback_arg, u_int32_t code, struct cam_path * path, void * arg)
 1175 {
 1176         KdPrint(("hpt_async"));
 1177 }
 1178 
 1179 static int hpt_shutdown(device_t dev)
 1180 {
 1181         KdPrint(("hpt_shutdown(dev=%p)", dev));
 1182         return 0;
 1183 }
 1184 
 1185 static int hpt_detach(device_t dev)
 1186 {
 1187         /* we don't allow the driver to be unloaded. */
 1188         return EBUSY;
 1189 }
 1190 
 1191 static void hpt_ioctl_done(struct _IOCTL_ARG *arg)
 1192 {
 1193         arg->ioctl_cmnd = 0;
 1194         wakeup(arg);
 1195 }
 1196 
 1197 static void __hpt_do_ioctl(PVBUS_EXT vbus_ext, IOCTL_ARG *ioctl_args)
 1198 {
 1199         ioctl_args->result = -1;
 1200         ioctl_args->done = hpt_ioctl_done;
 1201         ioctl_args->ioctl_cmnd = (void *)1;
 1202 
 1203         hpt_lock_vbus(vbus_ext);
 1204         ldm_ioctl((PVBUS)vbus_ext->vbus, ioctl_args);
 1205 
 1206         while (ioctl_args->ioctl_cmnd) {
 1207                 if (hpt_sleep(vbus_ext, ioctl_args, PPAUSE, "hptctl", HPT_OSM_TIMEOUT)==0)
 1208                         break;
 1209                 ldm_reset_vbus((PVBUS)vbus_ext->vbus);
 1210                 __hpt_do_tasks(vbus_ext);
 1211         }
 1212 
 1213         /* KdPrint(("ioctl %x result %d", ioctl_args->dwIoControlCode, ioctl_args->result)); */
 1214 
 1215         hpt_unlock_vbus(vbus_ext);
 1216 }
 1217 
 1218 static void hpt_do_ioctl(IOCTL_ARG *ioctl_args)
 1219 {
 1220         PVBUS vbus;
 1221         PVBUS_EXT vbus_ext;
 1222         
 1223         ldm_for_each_vbus(vbus, vbus_ext) {
 1224                 __hpt_do_ioctl(vbus_ext, ioctl_args);
 1225                 if (ioctl_args->result!=HPT_IOCTL_RESULT_WRONG_VBUS)
 1226                         return;
 1227         }
 1228 }
 1229 
 1230 #define HPT_DO_IOCTL(code, inbuf, insize, outbuf, outsize) ({\
 1231         IOCTL_ARG arg;\
 1232         arg.dwIoControlCode = code;\
 1233         arg.lpInBuffer = inbuf;\
 1234         arg.lpOutBuffer = outbuf;\
 1235         arg.nInBufferSize = insize;\
 1236         arg.nOutBufferSize = outsize;\
 1237         arg.lpBytesReturned = 0;\
 1238         hpt_do_ioctl(&arg);\
 1239         arg.result;\
 1240 })
 1241 
 1242 #define DEVICEID_VALID(id) ((id) && ((HPT_U32)(id)!=0xffffffff))
 1243 
 1244 static int hpt_get_logical_devices(DEVICEID * pIds, int nMaxCount)
 1245 {
 1246         int i;
 1247         HPT_U32 count = nMaxCount-1;
 1248         
 1249         if (HPT_DO_IOCTL(HPT_IOCTL_GET_LOGICAL_DEVICES,
 1250                         &count, sizeof(HPT_U32), pIds, sizeof(DEVICEID)*nMaxCount))
 1251                 return -1;
 1252 
 1253         nMaxCount = (int)pIds[0];
 1254         for (i=0; i<nMaxCount; i++) pIds[i] = pIds[i+1];
 1255         return nMaxCount;
 1256 }
 1257 
 1258 static int hpt_get_device_info_v3(DEVICEID id, PLOGICAL_DEVICE_INFO_V3 pInfo)
 1259 {
 1260         return HPT_DO_IOCTL(HPT_IOCTL_GET_DEVICE_INFO_V3,
 1261                                 &id, sizeof(DEVICEID), pInfo, sizeof(LOGICAL_DEVICE_INFO_V3));
 1262 }
 1263 
 1264 /* not belong to this file logically, but we want to use ioctl interface */
 1265 static int __hpt_stop_tasks(PVBUS_EXT vbus_ext, DEVICEID id)
 1266 {
 1267         LOGICAL_DEVICE_INFO_V3 devinfo;
 1268         int i, result;
 1269         DEVICEID param[2] = { id, 0 };
 1270         
 1271         if (hpt_get_device_info_v3(id, &devinfo))
 1272                 return -1;
 1273                 
 1274         if (devinfo.Type!=LDT_ARRAY)
 1275                 return -1;
 1276                 
 1277         if (devinfo.u.array.Flags & ARRAY_FLAG_REBUILDING)
 1278                 param[1] = AS_REBUILD_ABORT;
 1279         else if (devinfo.u.array.Flags & ARRAY_FLAG_VERIFYING)
 1280                 param[1] = AS_VERIFY_ABORT;
 1281         else if (devinfo.u.array.Flags & ARRAY_FLAG_INITIALIZING)
 1282                 param[1] = AS_INITIALIZE_ABORT;
 1283         else if (devinfo.u.array.Flags & ARRAY_FLAG_TRANSFORMING)
 1284                 param[1] = AS_TRANSFORM_ABORT;
 1285         else
 1286                 return -1;
 1287 
 1288         KdPrint(("SET_ARRAY_STATE(%x, %d)", param[0], param[1]));
 1289         result = HPT_DO_IOCTL(HPT_IOCTL_SET_ARRAY_STATE,
 1290                                 param, sizeof(param), 0, 0);
 1291                                 
 1292         for (i=0; i<devinfo.u.array.nDisk; i++)
 1293                 if (DEVICEID_VALID(devinfo.u.array.Members[i]))
 1294                         __hpt_stop_tasks(vbus_ext, devinfo.u.array.Members[i]);
 1295                         
 1296         return result;
 1297 }
 1298 
 1299 static void hpt_stop_tasks(PVBUS_EXT vbus_ext)
 1300 {
 1301         DEVICEID ids[32];
 1302         int i, count;
 1303 
 1304         count = hpt_get_logical_devices((DEVICEID *)&ids, sizeof(ids)/sizeof(ids[0]));
 1305         
 1306         for (i=0; i<count; i++)
 1307                 __hpt_stop_tasks(vbus_ext, ids[i]);
 1308 }
 1309 
 1310 static  d_open_t        hpt_open;
 1311 static  d_close_t       hpt_close;
 1312 static  d_ioctl_t       hpt_ioctl;
 1313 static  int             hpt_rescan_bus(void);
 1314 
 1315 static struct cdevsw hpt_cdevsw = {
 1316         .d_open =       hpt_open,
 1317         .d_close =      hpt_close,
 1318         .d_ioctl =      hpt_ioctl,
 1319         .d_name =       driver_name,
 1320         .d_version =    D_VERSION,
 1321 };
 1322 
 1323 static struct intr_config_hook hpt_ich;
 1324 
 1325 /*
 1326  * hpt_final_init will be called after all hpt_attach.
 1327  */
 1328 static void hpt_final_init(void *dummy)
 1329 {
 1330         int       i,unit_number=0;
 1331         PVBUS_EXT vbus_ext;
 1332         PVBUS vbus;
 1333         PHBA hba;
 1334 
 1335         /* Clear the config hook */
 1336         config_intrhook_disestablish(&hpt_ich);
 1337 
 1338         /* allocate memory */
 1339         i = 0;
 1340         ldm_for_each_vbus(vbus, vbus_ext) {
 1341                 if (hpt_alloc_mem(vbus_ext)) {
 1342                         os_printk("out of memory");
 1343                         return;
 1344                 }
 1345                 i++;
 1346         }
 1347 
 1348         if (!i) {
 1349                 if (bootverbose)
 1350                         os_printk("no controller detected.");
 1351                 return;
 1352         }
 1353 
 1354         /* initializing hardware */
 1355         ldm_for_each_vbus(vbus, vbus_ext) {
 1356                 /* make timer available here */
 1357                 mtx_init(&vbus_ext->lock, "hptsleeplock", NULL, MTX_DEF);
 1358                 callout_init_mtx(&vbus_ext->timer, &vbus_ext->lock, 0);
 1359                 if (hpt_init_vbus(vbus_ext)) {
 1360                         os_printk("fail to initialize hardware");
 1361                         break; /* FIXME */
 1362                 }
 1363         }
 1364 
 1365         /* register CAM interface */
 1366         ldm_for_each_vbus(vbus, vbus_ext) {
 1367                 struct cam_devq *devq;
 1368                 struct ccb_setasync     ccb;
 1369                 
 1370                 if (bus_dma_tag_create(NULL,/* parent */
 1371                                 4,      /* alignment */
 1372                                 BUS_SPACE_MAXADDR_32BIT+1, /* boundary */
 1373                                 BUS_SPACE_MAXADDR,      /* lowaddr */
 1374                                 BUS_SPACE_MAXADDR,      /* highaddr */
 1375                                 NULL, NULL,             /* filter, filterarg */
 1376                                 PAGE_SIZE * (os_max_sg_descriptors-1),  /* maxsize */
 1377                                 os_max_sg_descriptors,  /* nsegments */
 1378                                 0x10000,        /* maxsegsize */
 1379                                 BUS_DMA_WAITOK,         /* flags */
 1380                                 busdma_lock_mutex,      /* lockfunc */
 1381                                 &vbus_ext->lock,                /* lockfuncarg */
 1382                                 &vbus_ext->io_dmat      /* tag */))
 1383                 {
 1384                         return ;
 1385                 }
 1386 
 1387                 for (i=0; i<os_max_queue_comm; i++) {
 1388                         POS_CMDEXT ext = (POS_CMDEXT)malloc(sizeof(OS_CMDEXT), M_DEVBUF, M_WAITOK);
 1389                         if (!ext) {
 1390                                 os_printk("Can't alloc cmdext(%d)", i);
 1391                                 return ;
 1392                         }
 1393                         ext->vbus_ext = vbus_ext;
 1394                         ext->next = vbus_ext->cmdext_list;
 1395                         vbus_ext->cmdext_list = ext;
 1396         
 1397                         if (bus_dmamap_create(vbus_ext->io_dmat, 0, &ext->dma_map)) {
 1398                                 os_printk("Can't create dma map(%d)", i);
 1399                                 return ;
 1400                         }
 1401                         callout_init_mtx(&ext->timeout, &vbus_ext->lock, 0);
 1402                 }
 1403 
 1404                 if ((devq = cam_simq_alloc(os_max_queue_comm)) == NULL) {
 1405                         os_printk("cam_simq_alloc failed");
 1406                         return ;
 1407                 }
 1408 
 1409                 hpt_lock_vbus(vbus_ext);
 1410                 vbus_ext->sim = cam_sim_alloc(hpt_action, hpt_poll, driver_name,
 1411                                 vbus_ext, unit_number, &vbus_ext->lock,
 1412                                 os_max_queue_comm, /*tagged*/8,  devq);
 1413                 unit_number++;
 1414                 if (!vbus_ext->sim) {
 1415                         os_printk("cam_sim_alloc failed");
 1416                         cam_simq_free(devq);
 1417                         hpt_unlock_vbus(vbus_ext);
 1418                         return ;
 1419                 }
 1420 
 1421                 if (xpt_bus_register(vbus_ext->sim, NULL, 0) != CAM_SUCCESS) {
 1422                         os_printk("xpt_bus_register failed");
 1423                         cam_sim_free(vbus_ext->sim, /*free devq*/ TRUE);
 1424                         vbus_ext->sim = NULL;
 1425                         return ;
 1426                 }
 1427         
 1428                 if (xpt_create_path(&vbus_ext->path, /*periph */ NULL,
 1429                                 cam_sim_path(vbus_ext->sim), CAM_TARGET_WILDCARD,
 1430                                 CAM_LUN_WILDCARD) != CAM_REQ_CMP)
 1431                 {
 1432                         os_printk("xpt_create_path failed");
 1433                         xpt_bus_deregister(cam_sim_path(vbus_ext->sim));
 1434                         cam_sim_free(vbus_ext->sim, /*free_devq*/TRUE);
 1435                         hpt_unlock_vbus(vbus_ext);
 1436                         vbus_ext->sim = NULL;
 1437                         return ;
 1438                 }
 1439                 hpt_unlock_vbus(vbus_ext);
 1440 
 1441                 memset(&ccb, 0, sizeof(ccb));
 1442                 xpt_setup_ccb(&ccb.ccb_h, vbus_ext->path, /*priority*/5);
 1443                 ccb.ccb_h.func_code = XPT_SASYNC_CB;
 1444                 ccb.event_enable = AC_LOST_DEVICE;
 1445                 ccb.callback = hpt_async;
 1446                 ccb.callback_arg = vbus_ext;
 1447                 xpt_action((union ccb *)&ccb);
 1448 
 1449                 for (hba = vbus_ext->hba_list; hba; hba = hba->next) {
 1450                         int rid = 0;
 1451                         if ((hba->irq_res = bus_alloc_resource_any(hba->pcidev,
 1452                                 SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE)) == NULL)
 1453                         {
 1454                                 os_printk("can't allocate interrupt");
 1455                                 return ;
 1456                         }
 1457                         
 1458                         if (bus_setup_intr(hba->pcidev, hba->irq_res, INTR_TYPE_CAM | INTR_MPSAFE,
 1459                                 NULL, hpt_pci_intr, vbus_ext, &hba->irq_handle)) 
 1460                         {
 1461                                 os_printk("can't set up interrupt");
 1462                                 return ;
 1463                         }
 1464                         hba->ldm_adapter.him->intr_control(hba->ldm_adapter.him_handle, HPT_TRUE);
 1465 
 1466                 }
 1467 
 1468                 vbus_ext->shutdown_eh = EVENTHANDLER_REGISTER(shutdown_final, 
 1469                                                                         hpt_shutdown_vbus, vbus_ext, SHUTDOWN_PRI_DEFAULT);
 1470                 if (!vbus_ext->shutdown_eh)
 1471                         os_printk("Shutdown event registration failed");
 1472         }
 1473         
 1474         ldm_for_each_vbus(vbus, vbus_ext) {
 1475                 TASK_INIT(&vbus_ext->worker, 0, (task_fn_t *)hpt_do_tasks, vbus_ext);
 1476                 if (vbus_ext->tasks)
 1477                         TASK_ENQUEUE(&vbus_ext->worker);
 1478         }       
 1479 
 1480         make_dev(&hpt_cdevsw, DRIVER_MINOR, UID_ROOT, GID_OPERATOR,
 1481             S_IRUSR | S_IWUSR, "%s", driver_name);
 1482 }
 1483 
 1484 #if defined(KLD_MODULE)
 1485 
 1486 typedef struct driverlink *driverlink_t;
 1487 struct driverlink {
 1488         kobj_class_t    driver;
 1489         TAILQ_ENTRY(driverlink) link;   /* list of drivers in devclass */
 1490 };
 1491 
 1492 typedef TAILQ_HEAD(driver_list, driverlink) driver_list_t;
 1493 
 1494 struct devclass {
 1495         TAILQ_ENTRY(devclass) link;
 1496         devclass_t      parent;         /* parent in devclass hierarchy */
 1497         driver_list_t   drivers;     /* bus devclasses store drivers for bus */
 1498         char            *name;
 1499         device_t        *devices;       /* array of devices indexed by unit */
 1500         int             maxunit;        /* size of devices array */
 1501 };
 1502 
 1503 static void override_kernel_driver(void)
 1504 {
 1505         driverlink_t dl, dlfirst;
 1506         driver_t *tmpdriver;
 1507         devclass_t dc = devclass_find("pci");
 1508         
 1509         if (dc){
 1510                 dlfirst = TAILQ_FIRST(&dc->drivers);
 1511                 for (dl = dlfirst; dl; dl = TAILQ_NEXT(dl, link)) {
 1512                         if(strcmp(dl->driver->name, driver_name) == 0) {
 1513                                 tmpdriver=dl->driver;
 1514                                 dl->driver=dlfirst->driver;
 1515                                 dlfirst->driver=tmpdriver;
 1516                                 break;
 1517                         }
 1518                 }
 1519         }
 1520 }
 1521 
 1522 #else 
 1523 #define override_kernel_driver()
 1524 #endif
 1525 
 1526 static void hpt_init(void *dummy)
 1527 {
 1528         if (bootverbose)
 1529                 os_printk("%s %s", driver_name_long, driver_ver);
 1530 
 1531         override_kernel_driver();
 1532         init_config();
 1533 
 1534         hpt_ich.ich_func = hpt_final_init;
 1535         hpt_ich.ich_arg = NULL;
 1536         if (config_intrhook_establish(&hpt_ich) != 0) {
 1537                 printf("%s: cannot establish configuration hook\n",
 1538                     driver_name_long);
 1539         }
 1540 
 1541 }
 1542 SYSINIT(hptinit, SI_SUB_CONFIGURE, SI_ORDER_FIRST, hpt_init, NULL);
 1543 
 1544 /*
 1545  * CAM driver interface
 1546  */
 1547 static device_method_t driver_methods[] = {
 1548         /* Device interface */
 1549         DEVMETHOD(device_probe,         hpt_probe),
 1550         DEVMETHOD(device_attach,        hpt_attach),
 1551         DEVMETHOD(device_detach,        hpt_detach),
 1552         DEVMETHOD(device_shutdown,      hpt_shutdown),
 1553         { 0, 0 }
 1554 };
 1555 
 1556 static driver_t hpt_pci_driver = {
 1557         driver_name,
 1558         driver_methods,
 1559         sizeof(HBA)
 1560 };
 1561 
 1562 #ifndef TARGETNAME
 1563 #error "no TARGETNAME found"
 1564 #endif
 1565 
 1566 /* use this to make TARGETNAME be expanded */
 1567 #define __DRIVER_MODULE(p1, p2, p3, p4, p5) DRIVER_MODULE(p1, p2, p3, p4, p5)
 1568 #define __MODULE_VERSION(p1, p2) MODULE_VERSION(p1, p2)
 1569 #define __MODULE_DEPEND(p1, p2, p3, p4, p5) MODULE_DEPEND(p1, p2, p3, p4, p5)
 1570 __DRIVER_MODULE(TARGETNAME, pci, hpt_pci_driver, 0, 0);
 1571 __MODULE_VERSION(TARGETNAME, 1);
 1572 __MODULE_DEPEND(TARGETNAME, cam, 1, 1, 1);
 1573 
 1574 static int hpt_open(struct cdev *dev, int flags, int devtype, struct thread *td)
 1575 {
 1576         return 0;
 1577 }
 1578 
 1579 static int hpt_close(struct cdev *dev, int flags, int devtype, struct thread *td)
 1580 {
 1581         return 0;
 1582 }
 1583 
 1584 static int hpt_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
 1585 {
 1586         PHPT_IOCTL_PARAM piop=(PHPT_IOCTL_PARAM)data;
 1587         IOCTL_ARG ioctl_args;
 1588         HPT_U32 bytesReturned = 0;
 1589 
 1590         switch (cmd){
 1591         case HPT_DO_IOCONTROL:
 1592         {       
 1593                 if (piop->Magic == HPT_IOCTL_MAGIC || piop->Magic == HPT_IOCTL_MAGIC32) {
 1594                         KdPrint(("ioctl=%x in=%p len=%d out=%p len=%d\n",
 1595                                 piop->dwIoControlCode,
 1596                                 piop->lpInBuffer,
 1597                                 piop->nInBufferSize,
 1598                                 piop->lpOutBuffer,
 1599                                 piop->nOutBufferSize));
 1600                         
 1601                 memset(&ioctl_args, 0, sizeof(ioctl_args));
 1602                 
 1603                 ioctl_args.dwIoControlCode = piop->dwIoControlCode;
 1604                 ioctl_args.nInBufferSize = piop->nInBufferSize;
 1605                 ioctl_args.nOutBufferSize = piop->nOutBufferSize;
 1606                 ioctl_args.lpBytesReturned = &bytesReturned;
 1607 
 1608                 if (ioctl_args.nInBufferSize) {
 1609                         ioctl_args.lpInBuffer = malloc(ioctl_args.nInBufferSize, M_DEVBUF, M_WAITOK);
 1610                         if (!ioctl_args.lpInBuffer)
 1611                                 goto invalid;
 1612                         if (copyin((void*)piop->lpInBuffer,
 1613                                         ioctl_args.lpInBuffer, piop->nInBufferSize))
 1614                                 goto invalid;
 1615                 }
 1616         
 1617                 if (ioctl_args.nOutBufferSize) {
 1618                         ioctl_args.lpOutBuffer = malloc(ioctl_args.nOutBufferSize, M_DEVBUF, M_WAITOK | M_ZERO);
 1619                         if (!ioctl_args.lpOutBuffer)
 1620                                 goto invalid;
 1621                 }
 1622                 
 1623                 hpt_do_ioctl(&ioctl_args);
 1624         
 1625                 if (ioctl_args.result==HPT_IOCTL_RESULT_OK) {
 1626                         if (piop->nOutBufferSize) {
 1627                                 if (copyout(ioctl_args.lpOutBuffer,
 1628                                         (void*)piop->lpOutBuffer, piop->nOutBufferSize))
 1629                                         goto invalid;
 1630                         }
 1631                         if (piop->lpBytesReturned) {
 1632                                 if (copyout(&bytesReturned,
 1633                                         (void*)piop->lpBytesReturned, sizeof(HPT_U32)))
 1634                                         goto invalid;
 1635                         }
 1636                         if (ioctl_args.lpInBuffer) free(ioctl_args.lpInBuffer, M_DEVBUF);
 1637                         if (ioctl_args.lpOutBuffer) free(ioctl_args.lpOutBuffer, M_DEVBUF);
 1638                         return 0;
 1639                 }
 1640 invalid:
 1641                 if (ioctl_args.lpInBuffer) free(ioctl_args.lpInBuffer, M_DEVBUF);
 1642                 if (ioctl_args.lpOutBuffer) free(ioctl_args.lpOutBuffer, M_DEVBUF);
 1643                 return EFAULT;
 1644         }
 1645         return EFAULT;
 1646         }
 1647 
 1648         case HPT_SCAN_BUS:
 1649         {
 1650                 return hpt_rescan_bus();
 1651         }
 1652         default:
 1653                 KdPrint(("invalid command!"));
 1654                 return EFAULT;
 1655         }       
 1656 
 1657 }
 1658 
 1659 static int      hpt_rescan_bus(void)
 1660 {
 1661         union ccb                       *ccb;
 1662         PVBUS                           vbus;
 1663         PVBUS_EXT                       vbus_ext;       
 1664                 
 1665         ldm_for_each_vbus(vbus, vbus_ext) {
 1666                 if ((ccb = xpt_alloc_ccb()) == NULL)
 1667                 {
 1668                         return(ENOMEM);
 1669                 }
 1670                 if (xpt_create_path(&ccb->ccb_h.path, NULL, cam_sim_path(vbus_ext->sim),
 1671                         CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP)  
 1672                 {
 1673                         xpt_free_ccb(ccb);
 1674                         return(EIO);
 1675                 }
 1676                 xpt_rescan(ccb);
 1677         }
 1678         return(0);      
 1679 }

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