gru: support for asynchronous gru instructions
Add support for asynchronous GRU instructions. Currently, asynchronous
instructions are supported only for GRU instructions issued by the kernel.
[akpm@linux-foundation.org: build fix]
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/misc/sgi-gru/grukservices.h b/drivers/misc/sgi-gru/grukservices.h
index 747ed31..d60d34b 100644
--- a/drivers/misc/sgi-gru/grukservices.h
+++ b/drivers/misc/sgi-gru/grukservices.h
@@ -146,4 +146,55 @@
extern int gru_copy_gpa(unsigned long dest_gpa, unsigned long src_gpa,
unsigned int bytes);
+/*
+ * Reserve GRU resources to be used asynchronously.
+ *
+ * input:
+ * blade_id - blade on which resources should be reserved
+ * cbrs - number of CBRs
+ * dsr_bytes - number of DSR bytes needed
+ * cmp - completion structure for waiting for
+ * async completions
+ * output:
+ * handle to identify resource
+ * (0 = no resources)
+ */
+extern unsigned long gru_reserve_async_resources(int blade_id, int cbrs, int dsr_bytes,
+ struct completion *cmp);
+
+/*
+ * Release async resources previously reserved.
+ *
+ * input:
+ * han - handle to identify resources
+ */
+extern void gru_release_async_resources(unsigned long han);
+
+/*
+ * Wait for async GRU instructions to complete.
+ *
+ * input:
+ * han - handle to identify resources
+ */
+extern void gru_wait_async_cbr(unsigned long han);
+
+/*
+ * Lock previous reserved async GRU resources
+ *
+ * input:
+ * han - handle to identify resources
+ * output:
+ * cb - pointer to first CBR
+ * dsr - pointer to first DSR
+ */
+extern void gru_lock_async_resource(unsigned long han, void **cb, void **dsr);
+
+/*
+ * Unlock previous reserved async GRU resources
+ *
+ * input:
+ * han - handle to identify resources
+ */
+extern void gru_unlock_async_resource(unsigned long han);
+
#endif /* __GRU_KSERVICES_H_ */