x86: uv: Add UV watchlist bios call

Add UV bios calls to allocate and free watchlists.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

2 files changed, 49 insertions, 1 deletions

diff --git a/arch/x86/include/asm/uv/bios.h b/arch/x86/include/asm/uv/bios.h
index 51cadc645e6f..58105c5b0b4e 100644
--- a/arch/x86/include/asm/uv/bios.h
+++ b/arch/x86/include/asm/uv/bios.h
@@ -32,7 +32,9 @@
 enum uv_bios_cmd {
         UV_BIOS_COMMON,
         UV_BIOS_GET_SN_INFO,
-        UV_BIOS_FREQ_BASE
+        UV_BIOS_FREQ_BASE,
+        UV_BIOS_WATCHLIST_ALLOC,
+        UV_BIOS_WATCHLIST_FREE
 };
 
 /*
@@ -71,6 +73,15 @@ union partition_info_u {
         };
 };
 
+union uv_watchlist_u {
+        u64     val;
+        struct {
+                u64     blade   : 16,
+                        size    : 32,
+                        filler  : 16;
+        };
+};
+
 /*
  * bios calls have 6 parameters
  */
@@ -80,9 +91,13 @@ extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64);
 
 extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *);
 extern s64 uv_bios_freq_base(u64, u64 *);
+extern int uv_bios_mq_watchlist_alloc(int, void *, unsigned int,
+                                        unsigned long *);
+extern int uv_bios_mq_watchlist_free(int, int);
 
 extern void uv_bios_init(void);
 
+extern unsigned long sn_rtc_cycles_per_second;
 extern int uv_type;
 extern long sn_partition_id;
 extern long sn_coherency_id;
diff --git a/arch/x86/kernel/bios_uv.c b/arch/x86/kernel/bios_uv.c
index 7cefb7170e75..4c02b2799216 100644
--- a/arch/x86/kernel/bios_uv.c
+++ b/arch/x86/kernel/bios_uv.c
@@ -100,6 +100,39 @@ s64 uv_bios_get_sn_info(int fc, int *uvtype, long *partid, long *coher,
         return ret;
 }
 
+int
+uv_bios_mq_watchlist_alloc(int blade, void *mq, unsigned int mq_size,
+                           unsigned long *intr_mmr_offset)
+{
+        union uv_watchlist_u size_blade;
+        unsigned long addr;
+        u64 watchlist;
+        s64 ret;
+
+        addr = (unsigned long)mq;
+        size_blade.size = mq_size;
+        size_blade.blade = blade;
+
+        /*
+         * bios returns watchlist number or negative error number.
+         */
+        ret = (int)uv_bios_call_irqsave(UV_BIOS_WATCHLIST_ALLOC, addr,
+                        size_blade.val, (u64)intr_mmr_offset,
+                        (u64)&watchlist, 0);
+        if (ret < BIOS_STATUS_SUCCESS)
+                return ret;
+
+        return watchlist;
+}
+EXPORT_SYMBOL_GPL(uv_bios_mq_watchlist_alloc);
+
+int
+uv_bios_mq_watchlist_free(int blade, int watchlist_num)
+{
+        return (int)uv_bios_call_irqsave(UV_BIOS_WATCHLIST_FREE,
+                                blade, watchlist_num, 0, 0, 0);
+}
+EXPORT_SYMBOL_GPL(uv_bios_mq_watchlist_free);
 
 s64 uv_bios_freq_base(u64 clock_type, u64 *ticks_per_second)
 {