/* ARGSUSED */
static void
volunteer_for_widgets(devfs_handle_t xswitch, devfs_handle_t master)
{
xswitch_vol_t xvolinfo = NULL;
(void)hwgraph_info_get_LBL(xswitch,
INFO_LBL_XSWITCH_VOL,
(arbitrary_info_t *)&xvolinfo);
if (xvolinfo == NULL) {
#ifdef LATER
if (!is_headless_node_vertex(master)) {
#if defined(SUPPORT_PRINTING_V_FORMAT)
printk(KERN_WARNING "volunteer for widgets: vertex %v has no info label",
xswitch);
#else
printk(KERN_WARNING "volunteer for widgets: vertex 0x%x has no info label",
xswitch);
#endif
}
#endif /* LATER */
return;
}
mutex_lock(&xvolinfo->xswitch_volunteer_mutex);
ASSERT(xvolinfo->xswitch_volunteer_count < NUM_XSWITCH_VOLUNTEER);
xvolinfo->xswitch_volunteer[xvolinfo->xswitch_volunteer_count] = master;
xvolinfo->xswitch_volunteer_count++;
mutex_unlock(&xvolinfo->xswitch_volunteer_mutex);
}
/* ARGSUSED */
static void
volunteer_for_widgets(vertex_hdl_t xswitch, vertex_hdl_t master)
{
xswitch_vol_t xvolinfo = NULL;
vertex_hdl_t hubv;
hubinfo_t hubinfo;
(void)hwgraph_info_get_LBL(xswitch,
INFO_LBL_XSWITCH_VOL,
(arbitrary_info_t *)&xvolinfo);
if (xvolinfo == NULL) {
if (!is_headless_node_vertex(master)) {
char name[MAXDEVNAME];
printk(KERN_WARNING
"volunteer for widgets: vertex %s has no info label",
vertex_to_name(xswitch, name, MAXDEVNAME));
}
return;
}
down(&xvolinfo->xswitch_volunteer_mutex);
ASSERT(xvolinfo->xswitch_volunteer_count < NUM_XSWITCH_VOLUNTEER);
xvolinfo->xswitch_volunteer[xvolinfo->xswitch_volunteer_count] = master;
xvolinfo->xswitch_volunteer_count++;
/*
* if dual ported, make the lowest widgetid always be
* xswitch_volunteer[0].
*/
if (xvolinfo->xswitch_volunteer_count == NUM_XSWITCH_VOLUNTEER) {
hubv = xvolinfo->xswitch_volunteer[0];
hubinfo_get(hubv, &hubinfo);
if (hubinfo->h_widgetid != XBOW_HUBLINK_LOW) {
xvolinfo->xswitch_volunteer[0] =
xvolinfo->xswitch_volunteer[1];
xvolinfo->xswitch_volunteer[1] = hubv;
}
}
up(&xvolinfo->xswitch_volunteer_mutex);
}
/* 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)
{
int curr_volunteer, num_volunteer;
xwidgetnum_t widgetnum;
xswitch_info_t xswitch_info;
xswitch_vol_t xvolinfo = NULL;
nasid_t nasid;
hubinfo_t hubinfo;
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) {
#ifdef LATER
if (!is_headless_node_vertex(hubv)) {
#if defined(SUPPORT_PRINTING_V_FORMAT)
printk(KERN_WARNING "assign_widgets_to_volunteers:vertex %v has "
" no info label",
xswitch);
#else
printk(KERN_WARNING "assign_widgets_to_volunteers:vertex 0x%x has "
" no info label",
xswitch);
#endif
}
#endif /* LATER */
return;
}
num_volunteer = xvolinfo->xswitch_volunteer_count;
ASSERT(num_volunteer > 0);
curr_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++) {
/*
* 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)) {
int i;
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;
}
#ifdef LATER
PRINT_PANIC("Nasid == %d, console nasid == %d",
nasid, get_console_nasid());
#endif
}
/*
* Do a round-robin assignment among the volunteer nodes.
*/
hubv = xvolinfo->xswitch_volunteer[curr_volunteer];
curr_volunteer = (curr_volunteer + 1) % num_volunteer;
/* fall through */
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);
}
