Add UV watchlist support

Add UV watchlist support.

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

 arch/ia64/include/asm/sn/sn_sal.h |   45 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

Index: test/arch/ia64/include/asm/sn/sn_sal.h
=================================--- test.orig/arch/ia64/include/asm/sn/sn_sal.h 2008-10-20 15:15:48.647287983 -0500
+++ test/arch/ia64/include/asm/sn/sn_sal.h 2008-10-21 15:55:48.571396776 -0500
@@ -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
@@ -1183,6 +1185,49 @@ ia64_sn_kernel_launch_event(void)
{
struct ia64_sal_retval rv;
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 */

Russ Anderson, OS RAS/Partitioning Project Lead  
SGI - Silicon Graphics Inc          [email protected]