sgi-xp: prepare xpc_rsvd_page to work on either sn2 or uv hardware
Prepare XPC's reserved page header to work for either sn2 or uv.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index a05c7c7..2180f1f 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -175,6 +175,8 @@
.notifier_call = xpc_system_die,
};
+enum xp_retval (*xpc_rsvd_page_init) (struct xpc_rsvd_page *rp);
+
/*
* Timer function to enforce the timelimit on the partition disengage request.
*/
@@ -949,7 +951,7 @@
DBUG_ON(xpc_partition_engaged(-1UL));
/* indicate to others that our reserved page is uninitialized */
- xpc_rsvd_page->vars_pa = 0;
+ xpc_rsvd_page->stamp = ZERO_STAMP;
/* now it's time to eliminate our heartbeat */
del_timer_sync(&xpc_hb_timer);
@@ -1128,8 +1130,24 @@
struct task_struct *kthread;
size_t buf_size;
- if (!ia64_platform_is("sn2"))
+ if (is_shub()) {
+ /*
+ * The ia64-sn2 architecture supports at most 64 partitions.
+ * And the inability to unregister remote AMOs restricts us
+ * further to only support exactly 64 partitions on this
+ * architecture, no less.
+ */
+ if (xp_max_npartitions != 64)
+ return -EINVAL;
+
+ xpc_init_sn2();
+
+ } else if (is_uv()) {
+ xpc_init_uv();
+
+ } else {
return -ENODEV;
+ }
snprintf(xpc_part->bus_id, BUS_ID_SIZE, "part");
snprintf(xpc_chan->bus_id, BUS_ID_SIZE, "chan");
@@ -1214,7 +1232,7 @@
* other partitions to discover we are alive and establish initial
* communications.
*/
- xpc_rsvd_page = xpc_rsvd_page_init();
+ xpc_rsvd_page = xpc_setup_rsvd_page();
if (xpc_rsvd_page == NULL) {
dev_err(xpc_part, "can't setup our reserved page\n");
ret = -EBUSY;
@@ -1273,7 +1291,8 @@
/* initialization was not successful */
out_4:
/* indicate to others that our reserved page is uninitialized */
- xpc_rsvd_page->vars_pa = 0;
+ xpc_rsvd_page->stamp = ZERO_STAMP;
+
del_timer_sync(&xpc_hb_timer);
(void)unregister_die_notifier(&xpc_die_notifier);
(void)unregister_reboot_notifier(&xpc_reboot_notifier);
