sgi-xp: isolate xpc_vars structure to sn2 only

Isolate the xpc_vars structure of XPC's reserved page to sn2 only.

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>

1 files changed, 52 insertions, 5 deletions

diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c
index 770f0a8c669e..32c577b8d0df 100644
--- a/drivers/misc/sgi-xp/xpc_uv.c
+++ b/drivers/misc/sgi-xp/xpc_uv.c
@@ -19,15 +19,22 @@
 /* >>> uv_gpa() is defined in <gru/grukservices.h> */
 #define uv_gpa(_a)              ((unsigned long)_a)
 
-/* >>> temporarily define next three items for xpc.h */
-#define SGI_XPC_ACTIVATE        23
-#define SGI_XPC_NOTIFY          24
-#define sn_send_IPI_phys(_a, _b, _c, _d)
-
 #include "xpc.h"
 
+static DECLARE_BITMAP(xpc_heartbeating_to_mask_uv, XP_MAX_NPARTITIONS_UV);
+
 static void *xpc_activate_mq;
 
+static void
+xpc_IPI_send_local_activate_uv(struct xpc_partition *part)
+{
+        /*
+         * >>> make our side think that the remote parition sent an activate
+         * >>> message our way. Also do what the activate IRQ handler would
+         * >>> do had one really been sent.
+         */
+}
+
 static enum xp_retval
 xpc_rsvd_page_init_uv(struct xpc_rsvd_page *rp)
 {
@@ -36,6 +43,41 @@ xpc_rsvd_page_init_uv(struct xpc_rsvd_page *rp)
         return xpSuccess;
 }
 
+static void
+xpc_increment_heartbeat_uv(void)
+{
+        /* >>> send heartbeat msg to xpc_heartbeating_to_mask partids */
+}
+
+static void
+xpc_heartbeat_init_uv(void)
+{
+        bitmap_zero(xpc_heartbeating_to_mask_uv, XP_MAX_NPARTITIONS_UV);
+        xpc_heartbeating_to_mask = &xpc_heartbeating_to_mask_uv[0];
+}
+
+static void
+xpc_heartbeat_exit_uv(void)
+{
+        /* >>> send heartbeat_offline msg to xpc_heartbeating_to_mask partids */
+}
+
+static void
+xpc_initiate_partition_activation_uv(struct xpc_rsvd_page *remote_rp,
+                                     u64 remote_rp_pa, int nasid)
+{
+        short partid = remote_rp->SAL_partid;
+        struct xpc_partition *part = &xpc_partitions[partid];
+
+/*
+ * >>> setup part structure with the bits of info we can glean from the rp
+ * >>>  part->remote_rp_pa = remote_rp_pa;
+ * >>>  part->sn.uv.activate_mq_gpa = remote_rp->sn.activate_mq_gpa;
+ */
+
+        xpc_IPI_send_local_activate_uv(part);
+}
+
 /*
  * Setup the infrastructure necessary to support XPartition Communication
  * between the specified remote partition and the local one.
@@ -83,6 +125,11 @@ void
 xpc_init_uv(void)
 {
         xpc_rsvd_page_init = xpc_rsvd_page_init_uv;
+        xpc_increment_heartbeat = xpc_increment_heartbeat_uv;
+        xpc_heartbeat_init = xpc_heartbeat_init_uv;
+        xpc_heartbeat_exit = xpc_heartbeat_exit_uv;
+        xpc_initiate_partition_activation =
+            xpc_initiate_partition_activation_uv;
         xpc_setup_infrastructure = xpc_setup_infrastructure_uv;
         xpc_teardown_infrastructure = xpc_teardown_infrastructure_uv;
         xpc_make_first_contact = xpc_make_first_contact_uv;