This patch adds the architecture independent structures of the
syslet ABI.
Signed-off-by: Zach Brown <[email protected]>
diff --git a/include/linux/syslet-abi.h b/include/linux/syslet-abi.h
new file mode 100644
index 0000000..a8bc1a3
--- /dev/null
+++ b/include/linux/syslet-abi.h
@@ -0,0 +1,34 @@
+#ifndef _LINUX_SYSLET_ABI_H
+#define _LINUX_SYSLET_ABI_H
+
+#include <asm/syslet-abi.h> /* for struct syslet_frame */
+
+struct syslet_args {
+ u64 completion_ring_ptr;
+ u64 caller_data;
+ struct syslet_frame frame;
+};
+
+struct syslet_completion {
+ u64 status;
+ u64 caller_data;
+};
+
+/*
+ * The ring follows the "wrapping" convention as described by Andrew at:
+ * http://lkml.org/lkml/2007/4/11/276
+ * The head is updated by the kernel as completions are added and the
+ * tail is updated by userspace as completions are removed.
+ *
+ * The number of elements must be a power of two and the ring must be
+ * aligned to a u64.
+ */
+struct syslet_ring {
+ u32 kernel_head;
+ u32 user_tail;
+ u32 elements;
+ u32 wait_group;
+ struct syslet_completion comp[0];
+};
+
+#endif
--
1.5.2.2
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