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Diffstat (limited to 'drivers/misc/sgi-gru/gruhandles.h')
-rw-r--r--drivers/misc/sgi-gru/gruhandles.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/misc/sgi-gru/gruhandles.h b/drivers/misc/sgi-gru/gruhandles.h
index f44112242d00..47b762f89e0d 100644
--- a/drivers/misc/sgi-gru/gruhandles.h
+++ b/drivers/misc/sgi-gru/gruhandles.h
@@ -91,6 +91,12 @@
/* Convert an arbitrary handle address to the beginning of the GRU segment */
#define GRUBASE(h) ((void *)((unsigned long)(h) & ~(GRU_SIZE - 1)))
+/* Test a valid handle address to determine the type */
+#define TYPE_IS(hn, h) ((h) >= GRU_##hn##_BASE && (h) < \
+ GRU_##hn##_BASE + GRU_NUM_##hn * GRU_HANDLE_STRIDE && \
+ (((h) & (GRU_HANDLE_STRIDE - 1)) == 0))
+
+
/* General addressing macros. */
static inline void *get_gseg_base_address(void *base, int ctxnum)
{