fuzzing_engine: Add fuzzing engine uclass
This new class of device will provide fuzzing inputs from a fuzzing
engine.
Signed-off-by: Andrew Scull <ascull@google.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index 3ba69ad..a432e43 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -56,6 +56,7 @@
UCLASS_ETH, /* Ethernet device */
UCLASS_ETH_PHY, /* Ethernet PHY device */
UCLASS_FIRMWARE, /* Firmware */
+ UCLASS_FUZZING_ENGINE, /* Fuzzing engine */
UCLASS_FS_FIRMWARE_LOADER, /* Generic loader */
UCLASS_GPIO, /* Bank of general-purpose I/O pins */
UCLASS_HASH, /* Hash device */
diff --git a/include/fuzzing_engine.h b/include/fuzzing_engine.h
new file mode 100644
index 0000000..357346e
--- /dev/null
+++ b/include/fuzzing_engine.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2022 Google, Inc.
+ * Written by Andrew Scull <ascull@google.com>
+ */
+
+#ifndef __FUZZING_ENGINE_H
+#define __FUZZING_ENGINE_H
+
+struct udevice;
+
+/**
+ * dm_fuzzing_engine_get_input() - get an input from the fuzzing engine device
+ *
+ * The function will return a pointer to the input data and the size of the
+ * data pointed to. The pointer will remain valid until the next invocation of
+ * this function.
+ *
+ * @dev: fuzzing engine device
+ * @data: output pointer to input data
+ * @size output size of input data
+ * Return: 0 if OK, -ve on error
+ */
+int dm_fuzzing_engine_get_input(struct udevice *dev,
+ const uint8_t **data,
+ size_t *size);
+
+/**
+ * struct dm_fuzzing_engine_ops - operations for the fuzzing engine uclass
+ *
+ * This contains the functions implemented by a fuzzing engine device.
+ */
+struct dm_fuzzing_engine_ops {
+ /**
+ * @get_input() - get an input
+ *
+ * The function will return a pointer to the input data and the size of
+ * the data pointed to. The pointer will remain valid until the next
+ * invocation of this function.
+ *
+ * @get_input.dev: fuzzing engine device
+ * @get_input.data: output pointer to input data
+ * @get_input.size output size of input data
+ * @get_input.Return: 0 if OK, -ve on error
+ */
+ int (*get_input)(struct udevice *dev,
+ const uint8_t **data,
+ size_t *size);
+};
+
+#endif /* __FUZZING_ENGINE_H */