Initial commit

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>

src/utils/utils_io.h

@@ -0,0 +1,86 @@
+/*
+ * Copyright(c) 2012-2018 Intel Corporation
+ * SPDX-License-Identifier: BSD-3-Clause-Clear
+ */
+
+#ifndef UTILS_IO_H_
+#define UTILS_IO_H_
+
+#include "../ocf_request.h"
+
+/**
+ * Checks if 2 IOs are overlapping.
+ * @param start1 start of first range (inclusive)
+ * @param end1 end of first range (exclusive)
+ * @param start2 start of second range (inclusive)
+ * @param end2 end of second range (exclusive)
+ * @return 0 in case overlap is not detected, otherwise 1
+ */
+static inline int ocf_io_range_overlaps(uint32_t start1, uint32_t end1,
+		uint32_t start2, uint32_t end2)
+{
+	if (start2 <= start1 && end2 >= start1)
+		return 1;
+
+	if (start2 >= start1 && end1 >= start2)
+		return 1;
+
+	return 0;
+}
+
+/**
+ * Checks if 2 IOs are overlapping.
+ * @param start1 start of first range (inclusive)
+ * @param count1 no of bytes, cachelines (etc) for first range
+ * @param start2 start of second range (inclusive)
+ * @param count2 no of bytes, cachelines (etc) for second range
+ * @return 0 in case overlap is not detected, otherwise 1
+ */
+static inline int ocf_io_overlaps(uint32_t start1, uint32_t count1,
+		uint32_t start2, uint32_t count2)
+{
+	return ocf_io_range_overlaps(start1, start1 + count1 - 1, start2,
+			start2 + count2 - 1);
+}
+
+int ocf_submit_io_wait(struct ocf_io *io);
+
+void ocf_submit_obj_flush(ocf_data_obj_t obj, ocf_end_t callback,
+		void *context);
+
+int ocf_submit_obj_flush_wait(ocf_data_obj_t obj);
+
+int ocf_submit_obj_discard_wait(ocf_data_obj_t obj, uint64_t addr,
+		uint64_t length);
+
+void ocf_submit_obj_discard(ocf_data_obj_t obj, struct ocf_request *req,
+		ocf_end_t callback, void *ctx);
+
+int ocf_submit_write_zeroes_wait(ocf_data_obj_t obj, uint64_t addr,
+		uint64_t length);
+
+int ocf_submit_cache_page(struct ocf_cache *cache, uint64_t addr,
+		int dir, void *buffer);
+
+void ocf_submit_obj_req(ocf_data_obj_t obj, struct ocf_request *req,
+		int dir, ocf_end_t callback, void *ctx);
+
+
+void ocf_submit_cache_reqs(struct ocf_cache *cache,
+		struct ocf_map_info *map_info, struct ocf_request *req, int dir,
+		unsigned int reqs, ocf_end_t callback, void *ctx);
+
+static inline struct ocf_io *ocf_new_cache_io(struct ocf_cache *cache)
+{
+	return ocf_dobj_new_io(&cache->device->obj);
+}
+
+static inline struct ocf_io *ocf_new_core_io(struct ocf_cache *cache,
+		ocf_core_id_t core_id)
+{
+	ENV_BUG_ON(core_id >= OCF_CORE_MAX);
+
+	return ocf_dobj_new_io(&cache->core_obj[core_id].obj);
+}
+
+#endif /* UTILS_IO_H_ */