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authorJack Steiner <steiner@sgi.com>2009-06-17 16:28:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-18 13:04:00 -0700
commit9120dec47f150636d85b3dba03318ccecd181c79 (patch)
tree8819f1aa2b71992c8a4d80e974e7236c0d762fdb /drivers/misc/sgi-gru/grukservices.h
parent4a7a17c1188a878e9f00e4ca8dc724c7cff17606 (diff)
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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>
Diffstat (limited to 'drivers/misc/sgi-gru/grukservices.h')
-rw-r--r--drivers/misc/sgi-gru/grukservices.h51
1 files changed, 51 insertions, 0 deletions
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 void *gru_get_next_message(struct gru_message_queue_desc *mqd);
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_ */