sgi-xpc: clean up numerous globals

Introduce xpc_arch_ops and eliminate numerous individual global definitions.

Signed-off-by: Robin Holt <holt@sgi.com>
Cc: 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_partition.c b/drivers/misc/sgi-xp/xpc_partition.c
index 6722f6f..65877bc 100644
--- a/drivers/misc/sgi-xp/xpc_partition.c
+++ b/drivers/misc/sgi-xp/xpc_partition.c
@@ -70,6 +70,9 @@
 	size_t buf_len = 0;
 	void *buf = buf;
 	void *buf_base = NULL;
+	enum xp_retval (*get_partition_rsvd_page_pa)
+		(void *, u64 *, unsigned long *, size_t *) =
+		xpc_arch_ops.get_partition_rsvd_page_pa;
 
 	while (1) {
 
@@ -79,8 +82,7 @@
 		 * ??? 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);
+		ret = get_partition_rsvd_page_pa(buf, &cookie, &rp_pa, &len);
 
 		dev_dbg(xpc_part, "SAL returned with ret=%d, cookie=0x%016lx, "
 			"address=0x%016lx, len=0x%016lx\n", ret,
@@ -172,7 +174,7 @@
 	xpc_part_nasids = XPC_RP_PART_NASIDS(rp);
 	xpc_mach_nasids = XPC_RP_MACH_NASIDS(rp);
 
-	ret = xpc_setup_rsvd_page_sn(rp);
+	ret = xpc_arch_ops.setup_rsvd_page(rp);
 	if (ret != 0)
 		return ret;
 
@@ -264,7 +266,7 @@
 	short partid = XPC_PARTID(part);
 	int disengaged;
 
-	disengaged = !xpc_partition_engaged(partid);
+	disengaged = !xpc_arch_ops.partition_engaged(partid);
 	if (part->disengage_timeout) {
 		if (!disengaged) {
 			if (time_is_after_jiffies(part->disengage_timeout)) {
@@ -280,7 +282,7 @@
 			dev_info(xpc_part, "deactivate request to remote "
 				 "partition %d timed out\n", partid);
 			xpc_disengage_timedout = 1;
-			xpc_assume_partition_disengaged(partid);
+			xpc_arch_ops.assume_partition_disengaged(partid);
 			disengaged = 1;
 		}
 		part->disengage_timeout = 0;
@@ -294,7 +296,7 @@
 		if (part->act_state != XPC_P_AS_INACTIVE)
 			xpc_wakeup_channel_mgr(part);
 
-		xpc_cancel_partition_deactivation_request(part);
+		xpc_arch_ops.cancel_partition_deactivation_request(part);
 	}
 	return disengaged;
 }
@@ -339,7 +341,7 @@
 		spin_unlock_irqrestore(&part->act_lock, irq_flags);
 		if (reason == xpReactivating) {
 			/* we interrupt ourselves to reactivate partition */
-			xpc_request_partition_reactivation(part);
+			xpc_arch_ops.request_partition_reactivation(part);
 		}
 		return;
 	}
@@ -358,7 +360,7 @@
 	spin_unlock_irqrestore(&part->act_lock, irq_flags);
 
 	/* ask remote partition to deactivate with regard to us */
-	xpc_request_partition_deactivation(part);
+	xpc_arch_ops.request_partition_deactivation(part);
 
 	/* set a timelimit on the disengage phase of the deactivation request */
 	part->disengage_timeout = jiffies + (xpc_disengage_timelimit * HZ);
@@ -496,7 +498,7 @@
 				continue;
 			}
 
-			xpc_request_partition_activation(remote_rp,
+			xpc_arch_ops.request_partition_activation(remote_rp,
 							 remote_rp_pa, nasid);
 		}
 	}