Exemplo n.º 1
0
static int sn_hwperf_geoid_to_cnode(char *location)
{
	int cnode;
	geoid_t geoid;
	moduleid_t module_id;
	int rack, bay, slot, slab;
	int this_rack, this_bay, this_slot, this_slab;

	if (sn_hwperf_location_to_bpos(location, &rack, &bay, &slot, &slab))
		return -1;

	for (cnode = 0; cnode < numionodes; cnode++) {
		geoid = cnodeid_get_geoid(cnode);
		module_id = geo_module(geoid);
		this_rack = MODULE_GET_RACK(module_id);
		this_bay = MODULE_GET_BPOS(module_id);
		this_slot = geo_slot(geoid);
		this_slab = geo_slab(geoid);
		if (rack == this_rack && bay == this_bay &&
			slot == this_slot && slab == this_slab) {
			break;
		}
	}

	return cnode < numionodes ? cnode : -1;
}
Exemplo n.º 2
0
int
geo_cmp(geoid_t g0, geoid_t g1)
{
    int rv;

    /* Compare the common fields */
    rv = MODULE_CMP(geo_module(g0), geo_module(g1));
    if (rv != 0)
	return rv;

    rv = geo_slab(g0) - geo_slab(g1);
    if (rv != 0)
	return rv;

    /* Within a slab, sort by type */
    rv = geo_type(g0) - geo_type(g1);
    if (rv != 0)
	return rv;

    switch(geo_type(g0)) {
    case GEO_TYPE_CPU:
	rv = g0.cpu.slice - g1.cpu.slice;
	break;

    case GEO_TYPE_IOCARD:
	rv = g0.pcicard.bus - g1.pcicard.bus;
	if (rv) break;
	rv = SLOTNUM_GETSLOT(g0.pcicard.slot) -
	    SLOTNUM_GETSLOT(g1.pcicard.slot);
	break;

    case GEO_TYPE_MEM:
	rv = g0.mem.membus - g1.mem.membus;
	if (rv) break;
	rv = g0.mem.memslot - g1.mem.memslot;
	break;

    default:
	rv = 0;
    }

    return rv;
}
Exemplo n.º 3
0
static int tiocx_btchar_get(int nasid)
{
	moduleid_t module_id;
	geoid_t geoid;
	int cnodeid;

	cnodeid = nasid_to_cnodeid(nasid);
	geoid = cnodeid_get_geoid(cnodeid);
	module_id = geo_module(geoid);
	return MODULE_GET_BTCHAR(module_id);
}
/* Add inventory information to the widget vertex 
 * Right now (module,slot,revision) is being
 * added as inventory information.
 */
static void
xwidget_inventory_add(vertex_hdl_t 		widgetv,
		      lboard_t 			*board,
		      struct xwidget_hwid_s 	hwid)
{
	if (!board)
		return;
	/* Donot add inventory information for the baseio
	 * on a speedo with an xbox. It has already been
	 * taken care of in SN00_vmc.
	 * Speedo with xbox's baseio comes in at slot io1 (widget 9)
	 */
	device_inventory_add(widgetv,INV_IOBD,board->brd_type,
			     geo_module(board->brd_geoid),
			     SLOTNUM_GETSLOT(board->brd_slot),
			     hwid.rev_num);
}
Exemplo n.º 5
0
module_t *module_add_node(geoid_t geoid, cnodeid_t cnodeid)
{
    module_t	       *m;
    int			i;
    char		buffer[16];
    moduleid_t		moduleid;

    memset(buffer, 0, 16);
    moduleid = geo_module(geoid);
    format_module_id(buffer, moduleid, MODULE_FORMAT_BRIEF);
    DPRINTF("module_add_node: moduleid=%s node=%d\n", buffer, cnodeid);

    if ((m = module_lookup(moduleid)) == 0) {
	m = kmalloc(sizeof (module_t), GFP_KERNEL);
	memset(m, 0 , sizeof(module_t));
	ASSERT_ALWAYS(m);

	m->id = moduleid;
	spin_lock_init(&m->lock);

	mutex_init_locked(&m->thdcnt);

	/* Insert in sorted order by module number */

	for (i = nummodules; i > 0 && modules[i - 1]->id > moduleid; i--)
	    modules[i] = modules[i - 1];

	modules[i] = m;
	nummodules++;
    }

    m->nodes[m->nodecnt] = cnodeid;
    m->geoid[m->nodecnt] = geoid;
    m->nodecnt++;

    DPRINTF("module_add_node: module %s now has %d nodes\n", buffer, m->nodecnt);

    return m;
}
Exemplo n.º 6
0
/*
 * scdrv_init
 *
 * Called at boot time to initialize the system controller communication
 * facility.
 */
int __init
scdrv_init(void)
{
	geoid_t geoid;
	cnodeid_t cnode;
	char devname[32];
	char *devnamep;
	struct sysctl_data_s *scd;
	void *salbuf;
	dev_t first_dev, dev;
	nasid_t event_nasid = ia64_sn_get_console_nasid();

	if (alloc_chrdev_region(&first_dev, 0, numionodes,
				SYSCTL_BASENAME) < 0) {
		printk("%s: failed to register SN system controller device\n",
		       __FUNCTION__);
		return -ENODEV;
	}
	snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME);

	for (cnode = 0; cnode < numionodes; cnode++) {
			geoid = cnodeid_get_geoid(cnode);
			devnamep = devname;
			format_module_id(devnamep, geo_module(geoid),
					 MODULE_FORMAT_BRIEF);
			devnamep = devname + strlen(devname);
			sprintf(devnamep, "#%d", geo_slab(geoid));

			/* allocate sysctl device data */
			scd = kmalloc(sizeof (struct sysctl_data_s),
				      GFP_KERNEL);
			if (!scd) {
				printk("%s: failed to allocate device info"
				       "for %s/%s\n", __FUNCTION__,
				       SYSCTL_BASENAME, devname);
				continue;
			}
			memset(scd, 0, sizeof (struct sysctl_data_s));

			/* initialize sysctl device data fields */
			scd->scd_nasid = cnodeid_to_nasid(cnode);
			if (!(salbuf = kmalloc(SCDRV_BUFSZ, GFP_KERNEL))) {
				printk("%s: failed to allocate driver buffer"
				       "(%s%s)\n", __FUNCTION__,
				       SYSCTL_BASENAME, devname);
				kfree(scd);
				continue;
			}

			if (ia64_sn_irtr_init(scd->scd_nasid, salbuf,
					      SCDRV_BUFSZ) < 0) {
				printk
				    ("%s: failed to initialize SAL for"
				     " system controller communication"
				     " (%s/%s): outdated PROM?\n",
				     __FUNCTION__, SYSCTL_BASENAME, devname);
				kfree(scd);
				kfree(salbuf);
				continue;
			}

			dev = first_dev + cnode;
			cdev_init(&scd->scd_cdev, &scdrv_fops);
			if (cdev_add(&scd->scd_cdev, dev, 1)) {
				printk("%s: failed to register system"
				       " controller device (%s%s)\n",
				       __FUNCTION__, SYSCTL_BASENAME, devname);
				kfree(scd);
				kfree(salbuf);
				continue;
			}

			class_device_create(snsc_class, dev, NULL,
						"%s", devname);

			ia64_sn_irtr_intr_enable(scd->scd_nasid,
						 0 /*ignored */ ,
						 SAL_IROUTER_INTR_RECV);

                        /* on the console nasid, prepare to receive
                         * system controller environmental events
                         */
                        if(scd->scd_nasid == event_nasid) {
                                scdrv_event_init(scd);
                        }
	}
	return 0;
}
Exemplo n.º 7
0
/* ARGSUSED */
static void __init
klhwg_add_node(vertex_hdl_t hwgraph_root, cnodeid_t cnode)
{
	nasid_t nasid;
	lboard_t *brd;
	klhub_t *hub;
	vertex_hdl_t node_vertex = NULL;
	char path_buffer[100];
	int rv;
	char *s;
	int board_disabled = 0;
	klcpu_t *cpu;
	vertex_hdl_t cpu_dir;

	nasid = cnodeid_to_nasid(cnode);
	brd = find_lboard_any((lboard_t *)KL_CONFIG_INFO(nasid), KLTYPE_SNIA);
	ASSERT(brd);

	/* Generate a hardware graph path for this board. */
	board_to_path(brd, path_buffer);
	rv = hwgraph_path_add(hwgraph_root, path_buffer, &node_vertex);
	if (rv != GRAPH_SUCCESS) {
		printk("Node vertex creation failed.  Path == %s", path_buffer);
		return;
	}

	HWGRAPH_DEBUG(__FILE__, __FUNCTION__, __LINE__, node_vertex, NULL, "Created path for SHUB node.\n");
	hub = (klhub_t *)find_first_component(brd, KLSTRUCT_HUB);
	ASSERT(hub);
	if(hub->hub_info.flags & KLINFO_ENABLE)
		board_disabled = 0;
	else
		board_disabled = 1;
		
	if(!board_disabled) {
		mark_nodevertex_as_node(node_vertex, cnode);
		s = dev_to_name(node_vertex, path_buffer, sizeof(path_buffer));
		NODEPDA(cnode)->hwg_node_name =
					kmalloc(strlen(s) + 1, GFP_KERNEL);
		if (NODEPDA(cnode)->hwg_node_name <= 0) {
			printk("%s: no memory\n", __FUNCTION__);
			return;
		}
		strcpy(NODEPDA(cnode)->hwg_node_name, s);
		hubinfo_set(node_vertex, NODEPDA(cnode)->pdinfo);
		NODEPDA(cnode)->slotdesc = brd->brd_slot;
		NODEPDA(cnode)->geoid = brd->brd_geoid;
		NODEPDA(cnode)->module = module_lookup(geo_module(brd->brd_geoid));
		klhwg_add_hub(node_vertex, hub, cnode);
	}

	/*
	 * If there's at least 1 CPU, add a "cpu" directory to represent
	 * the collection of all CPUs attached to this node.
	 */
	cpu = (klcpu_t *)find_first_component(brd, KLSTRUCT_CPU);
	if (cpu) {
		graph_error_t rv;

		rv = hwgraph_path_add(node_vertex, EDGE_LBL_CPU, &cpu_dir);
		if (rv != GRAPH_SUCCESS) {
			printk("klhwg_add_node: Cannot create CPU directory\n");
			return;
		}
		HWGRAPH_DEBUG(__FILE__, __FUNCTION__, __LINE__, cpu_dir, NULL, "Created cpu directiry on SHUB node.\n");

	}

	while (cpu) {
		cpuid_t cpu_id;
		cpu_id = nasid_slice_to_cpuid(nasid,cpu->cpu_info.physid);
		if (cpu_online(cpu_id))
			klhwg_add_cpu(node_vertex, cnode, cpu);
		else
			klhwg_add_disabled_cpu(node_vertex, cnode, cpu, brd->brd_slot);

		cpu = (klcpu_t *)
			find_component(brd, (klinfo_t *)cpu, KLSTRUCT_CPU);
	}
}
Exemplo n.º 8
0
/*
 * scdrv_init
 *
 * Called at boot time to initialize the system controller communication
 * facility.
 */
int __init
scdrv_init(void)
{
	geoid_t geoid;
	cmoduleid_t cmod;
	int i;
	char devname[32];
	char *devnamep;
	module_t *m;
	struct sysctl_data_s *scd;
	void *salbuf;
	struct class_simple *snsc_class;
	dev_t first_dev, dev;

	if (alloc_chrdev_region(&first_dev, 0, (MAX_SLABS*nummodules),
				SYSCTL_BASENAME) < 0) {
		printk("%s: failed to register SN system controller device\n",
		       __FUNCTION__);
		return -ENODEV;
	}
	snsc_class = class_simple_create(THIS_MODULE, SYSCTL_BASENAME);

	for (cmod = 0; cmod < nummodules; cmod++) {
		m = sn_modules[cmod];
		for (i = 0; i <= MAX_SLABS; i++) {

			if (m->nodes[i] == -1) {
				/* node is not alive in module */
				continue;
			}

			geoid = m->geoid[i];
			devnamep = devname;
			format_module_id(devnamep, geo_module(geoid),
					 MODULE_FORMAT_BRIEF);
			devnamep = devname + strlen(devname);
			sprintf(devnamep, "#%d", geo_slab(geoid));

			/* allocate sysctl device data */
			scd = kmalloc(sizeof (struct sysctl_data_s),
				      GFP_KERNEL);
			if (!scd) {
				printk("%s: failed to allocate device info"
				       "for %s/%s\n", __FUNCTION__,
				       SYSCTL_BASENAME, devname);
				continue;
			}
			memset(scd, 0, sizeof (struct sysctl_data_s));

			/* initialize sysctl device data fields */
			scd->scd_nasid = cnodeid_to_nasid(m->nodes[i]);
			if (!(salbuf = kmalloc(SCDRV_BUFSZ, GFP_KERNEL))) {
				printk("%s: failed to allocate driver buffer"
				       "(%s%s)\n", __FUNCTION__,
				       SYSCTL_BASENAME, devname);
				kfree(scd);
				continue;
			}

			if (ia64_sn_irtr_init(scd->scd_nasid, salbuf,
					      SCDRV_BUFSZ) < 0) {
				printk
				    ("%s: failed to initialize SAL for"
				     " system controller communication"
				     " (%s/%s): outdated PROM?\n",
				     __FUNCTION__, SYSCTL_BASENAME, devname);
				kfree(scd);
				kfree(salbuf);
				continue;
			}

			dev = first_dev + m->nodes[i];
			cdev_init(&scd->scd_cdev, &scdrv_fops);
			if (cdev_add(&scd->scd_cdev, dev, 1)) {
				printk("%s: failed to register system"
				       " controller device (%s%s)\n",
				       __FUNCTION__, SYSCTL_BASENAME, devname);
				kfree(scd);
				kfree(salbuf);
				continue;
			}

			class_simple_device_add(snsc_class, dev, NULL,
						"%s", devname);

			ia64_sn_irtr_intr_enable(scd->scd_nasid,
						 0 /*ignored */ ,
						 SAL_IROUTER_INTR_RECV);
		}
	}
	return 0;
}
void
io_xswitch_widget_init(vertex_hdl_t  	xswitchv,
		       vertex_hdl_t	hubv,
		       xwidgetnum_t	widgetnum)
{
	xswitch_info_t		xswitch_info;
	xwidgetnum_t		hub_widgetid;
	vertex_hdl_t		widgetv;
	cnodeid_t		cnode;
	widgetreg_t		widget_id;
	nasid_t			nasid, peer_nasid;
	struct xwidget_hwid_s 	hwid;
	hubinfo_t		hubinfo;
	/*REFERENCED*/
	int			rc;
	char 			pathname[128];
	lboard_t		*board = NULL;
	char			buffer[16];
	char			bt;
	moduleid_t		io_module;
	slotid_t get_widget_slotnum(int xbow, int widget);
	
	DBG("\nio_xswitch_widget_init: hubv 0x%p, xswitchv 0x%p, widgetnum 0x%x\n", hubv, xswitchv, widgetnum);

	/*
	 * Verify that xswitchv is indeed an attached xswitch.
	 */
	xswitch_info = xswitch_info_get(xswitchv);
	ASSERT(xswitch_info != NULL);

	hubinfo_get(hubv, &hubinfo);
	nasid = hubinfo->h_nasid;
	cnode = NASID_TO_COMPACT_NODEID(nasid);
	hub_widgetid = hubinfo->h_widgetid;

	/*
	 * Check that the widget is an io widget and is enabled
	 * on this nasid or the `peer' nasid.  The peer nasid
	 * is the other hub/bedrock connected to the xbow.
	 */
	peer_nasid = NODEPDA(cnode)->xbow_peer;
	if (peer_nasid == INVALID_NASID)
		/* If I don't have a peer, use myself. */
		peer_nasid = nasid;
	if (!xbow_port_io_enabled(nasid, widgetnum) &&
	    !xbow_port_io_enabled(peer_nasid, widgetnum)) {
		return;
	}

	if (xswitch_info_link_ok(xswitch_info, widgetnum)) {
		char			name[4];
		lboard_t dummy;


		/*
		 * If the current hub is not supposed to be the master 
		 * for this widgetnum, then skip this widget.
		 */

		if (xswitch_info_master_assignment_get(xswitch_info, widgetnum) != hubv) {
			return;
		}

		board = find_lboard_class(
				(lboard_t *)KL_CONFIG_INFO(nasid),
				KLCLASS_IOBRICK);
		if (!board && NODEPDA(cnode)->xbow_peer != INVALID_NASID) {
		    	board = find_lboard_class(
					(lboard_t *)KL_CONFIG_INFO( NODEPDA(cnode)->xbow_peer),
						KLCLASS_IOBRICK);
		}

		if (board) {
			DBG("io_xswitch_widget_init: Found KLTYPE_IOBRICK Board 0x%p brd_type 0x%x\n", board, board->brd_type);
		} else {
			DBG("io_xswitch_widget_init: FIXME did not find IOBOARD\n");
			board = &dummy;
		}


		/* Copy over the nodes' geoid info */
		{
			lboard_t *brd;

			brd = find_lboard((lboard_t *)KL_CONFIG_INFO(nasid), KLTYPE_SNIA);
			if ( brd != (lboard_t *)0 ) {
				board->brd_geoid = brd->brd_geoid;
			}
		}

		/*
 		 * Make sure we really want to say xbrick, pbrick,
		 * etc. rather than XIO, graphics, etc.
 		 */

		memset(buffer, 0, 16);
		format_module_id(buffer, geo_module(board->brd_geoid), MODULE_FORMAT_BRIEF);

		sprintf(pathname, EDGE_LBL_MODULE "/%s/" EDGE_LBL_SLAB "/%d" "/%s" "/%s/%d",
			buffer,
			geo_slab(board->brd_geoid),
			(board->brd_type == KLTYPE_IBRICK) ? EDGE_LBL_IBRICK :
			(board->brd_type == KLTYPE_PBRICK) ? EDGE_LBL_PBRICK :
			(board->brd_type == KLTYPE_PXBRICK) ? EDGE_LBL_PXBRICK :
			(board->brd_type == KLTYPE_IXBRICK) ? EDGE_LBL_IXBRICK :
			(board->brd_type == KLTYPE_CGBRICK) ? EDGE_LBL_CGBRICK :
			(board->brd_type == KLTYPE_OPUSBRICK) ? EDGE_LBL_OPUSBRICK :
			(board->brd_type == KLTYPE_XBRICK) ? EDGE_LBL_XBRICK : "?brick",
			EDGE_LBL_XTALK, widgetnum);
		
		DBG("io_xswitch_widget_init: path= %s\n", pathname);
		rc = hwgraph_path_add(hwgraph_root, pathname, &widgetv);
		
		ASSERT(rc == GRAPH_SUCCESS);

		/* This is needed to let the user programs to map the
		 * module,slot numbers to the corresponding widget numbers
		 * on the crossbow.
		 */
		device_master_set(hwgraph_connectpt_get(widgetv), hubv);
		sprintf(name, "%d", widgetnum);
		DBG("io_xswitch_widget_init: FIXME hwgraph_edge_add %s xswitchv 0x%p, widgetv 0x%p\n", name, xswitchv, widgetv);
		rc = hwgraph_edge_add(xswitchv, widgetv, name);
		
		/*
		 * crosstalk switch code tracks which
		 * widget is attached to each link.
		 */
		xswitch_info_vhdl_set(xswitch_info, widgetnum, widgetv);
		
		/*
		 * Peek at the widget to get its crosstalk part and
		 * mfgr numbers, then present it to the generic xtalk
		 * bus provider to have its driver attach routine
		 * called (or not).
		 */
		widget_id = XWIDGET_ID_READ(nasid, widgetnum);
		hwid.part_num = XWIDGET_PART_NUM(widget_id);
		hwid.rev_num = XWIDGET_REV_NUM(widget_id);
		hwid.mfg_num = XWIDGET_MFG_NUM(widget_id);
		/* Store some inventory information about
		 * the xwidget in the hardware graph.
		 */
		xwidget_inventory_add(widgetv,board,hwid);

		(void)xwidget_register(&hwid, widgetv, widgetnum,
				       hubv, hub_widgetid);

		ia64_sn_sysctl_iobrick_module_get(nasid, &io_module);
		if (io_module >= 0) {
			char			buffer[16];
			vertex_hdl_t		to, from;
			char           		*brick_name;
			extern char *iobrick_L1bricktype_to_name(int type);


			memset(buffer, 0, 16);
			format_module_id(buffer, geo_module(board->brd_geoid), MODULE_FORMAT_BRIEF);

			if ( isupper(MODULE_GET_BTCHAR(io_module)) ) {
				bt = tolower(MODULE_GET_BTCHAR(io_module));
			}
			else {
				bt = MODULE_GET_BTCHAR(io_module);
			}

			brick_name = iobrick_L1bricktype_to_name(bt);

			/* Add a helper vertex so xbow monitoring
			* can identify the brick type. It's simply
			* an edge from the widget 0 vertex to the
			*  brick vertex.
			*/

			sprintf(pathname, EDGE_LBL_HW "/" EDGE_LBL_MODULE "/%s/"
				EDGE_LBL_SLAB "/%d/"
				EDGE_LBL_NODE "/" EDGE_LBL_XTALK "/"
				"0",
				buffer, geo_slab(board->brd_geoid));
			DBG("io_xswitch_widget_init: FROM path '%s'\n", pathname);

			from = hwgraph_path_to_vertex(pathname);
			ASSERT_ALWAYS(from);

			sprintf(pathname, EDGE_LBL_HW "/" EDGE_LBL_MODULE "/%s/"
				EDGE_LBL_SLAB "/%d/"
				"%s",
				buffer, geo_slab(board->brd_geoid), brick_name);
			DBG("io_xswitch_widget_init: TO path '%s'\n", pathname);
			to = hwgraph_path_to_vertex(pathname);
			ASSERT_ALWAYS(to);
			rc = hwgraph_edge_add(from, to,
				EDGE_LBL_INTERCONNECT);
			if (rc == -EEXIST)
				goto link_done;
			if (rc != GRAPH_SUCCESS) {
				printk("%s: Unable to establish link"
					" for xbmon.", pathname);
			}
link_done:
		}

#ifdef	SN0_USE_BTE
		bte_bpush_war(cnode, (void *)board);
#endif
	}
}
Exemplo n.º 10
0
/*
 * If this PIC is attached to two Cbricks ("dual-ported") then
 * attach each bus to opposite Cbricks.
 *
 * If successful, return a new vertex suitable for attaching the PIC bus.
 * If not successful, return zero and both buses will attach to the
 * vertex passed into pic_attach().
 */
static vertex_hdl_t
pic_bus1_redist(nasid_t nasid, vertex_hdl_t conn_v)
{
	cnodeid_t cnode = nasid_to_cnodeid(nasid);
	cnodeid_t xbow_peer = -1;
	char pathname[256], peer_path[256], tmpbuf[256];
	char *p;
	int rc;
	vertex_hdl_t peer_conn_v, hubv;
	int pos;
	slabid_t slab;

	if (NODEPDA(cnode)->xbow_peer >= 0) {			/* if dual-ported */
		/* create a path for this widget on the peer Cbrick */
		/* pcibr widget hw/module/001c11/slab/0/Pbrick/xtalk/12 */
		/* sprintf(pathname, "%v", conn_v); */
		xbow_peer = nasid_to_cnodeid(NODEPDA(cnode)->xbow_peer);
		pos = hwgfs_generate_path(conn_v, tmpbuf, 256);
		strcpy(pathname, &tmpbuf[pos]);
		p = pathname + strlen("hw/module/001c01/slab/0/");

		memset(tmpbuf, 0, 16);
		format_module_id(tmpbuf, geo_module((NODEPDA(xbow_peer))->geoid), MODULE_FORMAT_BRIEF);
		slab = geo_slab((NODEPDA(xbow_peer))->geoid);
		sprintf(peer_path, "module/%s/slab/%d/%s", tmpbuf, (int)slab, p); 
		
		/* Look for vertex for this widget on the peer Cbrick.
		 * Expect GRAPH_NOT_FOUND.
		 */
		rc = hwgraph_traverse(hwgraph_root, peer_path, &peer_conn_v);
		if (GRAPH_SUCCESS == rc)
			printk("pic_attach: found unexpected vertex: 0x%lx\n",
								(uint64_t)peer_conn_v);
		else if (GRAPH_NOT_FOUND != rc) {
			printk("pic_attach: hwgraph_traverse unexpectedly"
					" returned 0x%x\n", rc);
		} else {
			/* try to add the widget vertex to the peer Cbrick */
			rc = hwgraph_path_add(hwgraph_root, peer_path, &peer_conn_v);

			if (GRAPH_SUCCESS != rc)
			    printk("pic_attach: hwgraph_path_add"
						" failed with 0x%x\n", rc);
			else {
			    PCIBR_DEBUG_ALWAYS((PCIBR_DEBUG_ATTACH, conn_v,
					"pic_bus1_redist: added vertex %v\n", peer_conn_v)); 

			    /* Now hang appropiate stuff off of the new
			     * vertex.	We bail out if we cannot add something.
			     * In that case, we don't remove the newly added
			     * vertex but that should be safe and we don't
			     * really expect the additions to fail anyway.
			     */
			    if (!pic_bus1_widget_info_dup(conn_v, peer_conn_v, 
							  xbow_peer, peer_path))
					return 0;

			    hubv = cnodeid_to_vertex(xbow_peer);
			    ASSERT(hubv != GRAPH_VERTEX_NONE);
			    device_master_set(peer_conn_v, hubv);
			    xtalk_provider_register(hubv, &hub_provider);
			    xtalk_provider_startup(hubv);
			    return peer_conn_v;
			}
		}
	}
	return 0;
}