sgi-xp: setup the activate GRU message queue
Setup the activate GRU message queue that is used for partition activation
and channel connection on UV systems.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.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_partition.c b/drivers/misc/sgi-xp/xpc_partition.c
index b5fb216..6722f6f 100644
--- a/drivers/misc/sgi-xp/xpc_partition.c
+++ b/drivers/misc/sgi-xp/xpc_partition.c
@@ -73,6 +73,12 @@
while (1) {
+ /* !!! rp_pa will need to be _gpa on UV.
+ * ??? So do we save it into the architecture specific parts
+ * ??? of the xpc_partition structure? Do we rename this
+ * ??? function or have two versions? Rename rp_pa for UV to
+ * ??? rp_gpa?
+ */
ret = xpc_get_partition_rsvd_page_pa(buf, &cookie, &rp_pa,
&len);
@@ -118,9 +124,10 @@
* other partitions to discover we are alive and establish initial
* communications.
*/
-struct xpc_rsvd_page *
+int
xpc_setup_rsvd_page(void)
{
+ int ret;
struct xpc_rsvd_page *rp;
unsigned long rp_pa;
unsigned long new_ts_jiffies;
@@ -132,7 +139,7 @@
preempt_enable();
if (rp_pa == 0) {
dev_err(xpc_part, "SAL failed to locate the reserved page\n");
- return NULL;
+ return -ESRCH;
}
rp = (struct xpc_rsvd_page *)__va(rp_pa);
@@ -146,7 +153,7 @@
dev_err(xpc_part, "the reserved page's partid of %d is outside "
"supported range (< 0 || >= %d)\n", rp->SAL_partid,
xp_max_npartitions);
- return NULL;
+ return -EINVAL;
}
rp->version = XPC_RP_VERSION;
@@ -165,8 +172,9 @@
xpc_part_nasids = XPC_RP_PART_NASIDS(rp);
xpc_mach_nasids = XPC_RP_MACH_NASIDS(rp);
- if (xpc_rsvd_page_init(rp) != xpSuccess)
- return NULL;
+ ret = xpc_setup_rsvd_page_sn(rp);
+ if (ret != 0)
+ return ret;
/*
* Set timestamp of when reserved page was setup by XPC.
@@ -178,7 +186,15 @@
new_ts_jiffies++;
rp->ts_jiffies = new_ts_jiffies;
- return rp;
+ xpc_rsvd_page = rp;
+ return 0;
+}
+
+void
+xpc_teardown_rsvd_page(void)
+{
+ /* a zero timestamp indicates our rsvd page is not initialized */
+ xpc_rsvd_page->ts_jiffies = 0;
}
/*