[IA64] Add UV watchlist support.

This is used by SGI xp drivers (drivers/misc/sgi-xp).

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/arch/ia64/include/asm/sn/sn_sal.h b/arch/ia64/include/asm/sn/sn_sal.h
index 57e649d388b8..e310fc0135dc 100644
--- a/arch/ia64/include/asm/sn/sn_sal.h
+++ b/arch/ia64/include/asm/sn/sn_sal.h
@@ -90,6 +90,8 @@
 #define  SN_SAL_SET_CPU_NUMBER                     0x02000068
 
 #define  SN_SAL_KERNEL_LAUNCH_EVENT                0x02000069
+#define  SN_SAL_WATCHLIST_ALLOC                    0x02000070
+#define  SN_SAL_WATCHLIST_FREE                     0x02000071
 
 /*
  * Service-specific constants
@@ -1185,4 +1187,47 @@ ia64_sn_kernel_launch_event(void)
         SAL_CALL_NOLOCK(rv, SN_SAL_KERNEL_LAUNCH_EVENT, 0, 0, 0, 0, 0, 0, 0);
         return rv.status;
 }
+
+union sn_watchlist_u {
+        u64     val;
+        struct {
+                u64     blade   : 16,
+                        size    : 32,
+                        filler  : 16;
+        };
+};
+
+static inline int
+sn_mq_watchlist_alloc(int blade, void *mq, unsigned int mq_size,
+                                unsigned long *intr_mmr_offset)
+{
+        struct ia64_sal_retval rv;
+        unsigned long addr;
+        union sn_watchlist_u size_blade;
+        int watchlist;
+
+        addr = (unsigned long)mq;
+        size_blade.size = mq_size;
+        size_blade.blade = blade;
+
+        /*
+         * bios returns watchlist number or negative error number.
+         */
+        ia64_sal_oemcall_nolock(&rv, SN_SAL_WATCHLIST_ALLOC, addr,
+                        size_blade.val, (u64)intr_mmr_offset,
+                        (u64)&watchlist, 0, 0, 0);
+        if (rv.status < 0)
+                return rv.status;
+
+        return watchlist;
+}
+
+static inline int
+sn_mq_watchlist_free(int blade, int watchlist_num)
+{
+        struct ia64_sal_retval rv;
+        ia64_sal_oemcall_nolock(&rv, SN_SAL_WATCHLIST_FREE, blade,
+                        watchlist_num, 0, 0, 0, 0, 0);
+        return rv.status;
+}
 #endif /* _ASM_IA64_SN_SN_SAL_H */