/*
* Use the device's vertex to map the device's widget to a meaningful int
*/
int
io_path_map_widget(devfs_handle_t vertex)
{
char hw_path_name[MAXDEVNAME];
char *wp, *bp, *sp = NULL;
int widget_num;
long atoi(char *);
int hwgraph_vertex_name_get(devfs_handle_t vhdl, char *buf, uint buflen);
/* Get the full path name of the vertex */
if (GRAPH_SUCCESS != hwgraph_vertex_name_get(vertex, hw_path_name,
MAXDEVNAME))
return 0;
/* Find the widget number in the path name */
wp = strstr(hw_path_name, "/"EDGE_LBL_XTALK"/");
if (wp == NULL)
return 0;
widget_num = atoi(wp+7);
if (widget_num < XBOW_PORT_8 || widget_num > XBOW_PORT_F)
return 0;
/* Find "brick" in the path name */
bp = strstr(hw_path_name, "brick");
if (bp == NULL)
return 0;
/* Find preceding slash */
sp = bp;
while (sp > hw_path_name) {
sp--;
if (*sp == '/')
break;
}
/* Invalid if no preceding slash */
if (!sp)
return 0;
/* Bump slash pointer to "brick" prefix */
sp++;
/*
* Verify "brick" prefix length; valid exaples:
* 'I' from "/Ibrick"
* 'P' from "/Pbrick"
* 'X' from "/Xbrick"
*/
if ((bp - sp) != 1)
return 0;
return (io_brick_map_widget(*sp, widget_num));
}
/* ARGSUSED */
static void
assign_widgets_to_volunteers(vertex_hdl_t xswitch, vertex_hdl_t hubv)
{
xswitch_info_t xswitch_info;
xswitch_vol_t xvolinfo = NULL;
xwidgetnum_t widgetnum;
int num_volunteer;
nasid_t nasid;
hubinfo_t hubinfo;
extern int iobrick_type_get_nasid(nasid_t);
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
xswitch_info = xswitch_info_get(xswitch);
ASSERT(xswitch_info != NULL);
(void)hwgraph_info_get_LBL(xswitch,
INFO_LBL_XSWITCH_VOL,
(arbitrary_info_t *)&xvolinfo);
if (xvolinfo == NULL) {
if (!is_headless_node_vertex(hubv))
printk(KERN_WARNING
"assign_widgets_to_volunteers:vertex 0x%p has "
" no info label",
(void *)xswitch);
return;
}
num_volunteer = xvolinfo->xswitch_volunteer_count;
ASSERT(num_volunteer > 0);
/* Assign master hub for xswitch itself. */
if (HUB_WIDGET_ID_MIN > 0) {
hubv = xvolinfo->xswitch_volunteer[0];
xswitch_info_master_assignment_set(xswitch_info, (xwidgetnum_t)0, hubv);
}
/*
* TBD: Use administrative information to alter assignment of
* widgets to hubs.
*/
for (widgetnum=HUB_WIDGET_ID_MIN; widgetnum <= HUB_WIDGET_ID_MAX; widgetnum++) {
int i;
/*
* Ignore disabled/empty ports.
*/
if (!xbow_port_io_enabled(nasid, widgetnum))
continue;
/*
* If this is the master IO board, assign it to the same
* hub that owned it in the prom.
*/
if (is_master_baseio_nasid_widget(nasid, widgetnum)) {
extern nasid_t snia_get_master_baseio_nasid(void);
for (i=0; i<num_volunteer; i++) {
hubv = xvolinfo->xswitch_volunteer[i];
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
if (nasid == snia_get_master_baseio_nasid())
goto do_assignment;
}
panic("Nasid == %d, console nasid == %d",
nasid, snia_get_master_baseio_nasid());
}
/*
* Assuming that we're dual-hosted and that PCI cards
* are naturally placed left-to-right, alternate PCI
* buses across both Cbricks. For Pbricks, and Ibricks,
* io_brick_map_widget() returns the PCI bus number
* associated with the given brick type and widget number.
* For Xbricks, it returns the XIO slot number.
*/
i = 0;
if (num_volunteer > 1) {
int bt;
bt = iobrick_type_get_nasid(nasid);
if (bt >= 0) {
i = io_brick_map_widget(bt, widgetnum) & 1;
}
}
hubv = xvolinfo->xswitch_volunteer[i];
do_assignment:
/*
* At this point, we want to make hubv the master of widgetnum.
*/
xswitch_info_master_assignment_set(xswitch_info, widgetnum, hubv);
}
xswitch_volunteer_delete(xswitch);
}
/* ARGSUSED */
static void
assign_widgets_to_volunteers(devfs_handle_t xswitch, devfs_handle_t hubv)
{
xswitch_info_t xswitch_info;
xswitch_vol_t xvolinfo = NULL;
xwidgetnum_t widgetnum;
int num_volunteer;
nasid_t nasid;
hubinfo_t hubinfo;
extern int iobrick_type_get_nasid(nasid_t);
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
xswitch_info = xswitch_info_get(xswitch);
ASSERT(xswitch_info != NULL);
(void)hwgraph_info_get_LBL(xswitch,
INFO_LBL_XSWITCH_VOL,
(arbitrary_info_t *)&xvolinfo);
if (xvolinfo == NULL) {
return;
}
num_volunteer = xvolinfo->xswitch_volunteer_count;
ASSERT(num_volunteer > 0);
/* Assign master hub for xswitch itself. */
if (HUB_WIDGET_ID_MIN > 0) {
hubv = xvolinfo->xswitch_volunteer[0];
xswitch_info_master_assignment_set(xswitch_info, (xwidgetnum_t)0, hubv);
}
/*
* TBD: Use administrative information to alter assignment of
* widgets to hubs.
*/
for (widgetnum=HUB_WIDGET_ID_MIN; widgetnum <= HUB_WIDGET_ID_MAX; widgetnum++) {
int i;
/*
* Ignore disabled/empty ports.
*/
if (!xbow_port_io_enabled(nasid, widgetnum))
continue;
/*
* If this is the master IO board, assign it to the same
* hub that owned it in the prom.
*/
if (is_master_nasid_widget(nasid, widgetnum)) {
for (i=0; i<num_volunteer; i++) {
hubv = xvolinfo->xswitch_volunteer[i];
hubinfo_get(hubv, &hubinfo);
nasid = hubinfo->h_nasid;
if (nasid == get_console_nasid())
goto do_assignment;
}
}
/*
* Assuming that we're dual-hosted and that PCI cards
* are naturally placed left-to-right, alternate PCI
* buses across both Cbricks. For Pbricks, and Ibricks,
* io_brick_map_widget() returns the PCI bus number
* associated with the given brick type and widget number.
* For Xbricks, it returns the XIO slot number.
*/
i = 0;
if (num_volunteer > 1) {
int bt;
bt = iobrick_type_get_nasid(nasid);
if (bt >= 0) {
/*
* PXBRICK has two busses per widget so this
* algorithm wouldn't work (all busses would
* be assigned to one volunteer). Change the
* bricktype to PBRICK whose mapping is setup
* suchthat 2 of the PICs will be assigned to
* one volunteer and the other one will be
* assigned to the other volunteer.
*/
if (bt == MODULE_PXBRICK)
bt = MODULE_PBRICK;
i = io_brick_map_widget(bt, widgetnum) & 1;
}
}
hubv = xvolinfo->xswitch_volunteer[i];
do_assignment:
/*
* At this point, we want to make hubv the master of widgetnum.
*/
xswitch_info_master_assignment_set(xswitch_info, widgetnum, hubv);
}
xswitch_volunteer_delete(xswitch);
}
