GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/include/drivers/io/io_mtd.h

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2019-2021, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef IO_MTD_H
+#define IO_MTD_H
+
+#include <stdint.h>
+#include <stdio.h>
+
+#include <drivers/io/io_storage.h>
+
+/* MTD devices ops */
+typedef struct io_mtd_ops {
+	/*
+	 * Initialize MTD framework and retrieve device information.
+	 *
+	 * @size:  [out] MTD device size in bytes.
+	 * @erase_size: [out] MTD erase size in bytes.
+	 * Return 0 on success, a negative error code otherwise.
+	 */
+	int (*init)(unsigned long long *size, unsigned int *erase_size);
+
+	/*
+	 * Execute a read memory operation.
+	 *
+	 * @offset: Offset in bytes to start read operation.
+	 * @buffer: [out] Buffer to store read data.
+	 * @length: Required length to be read in bytes.
+	 * @out_length: [out] Length read in bytes.
+	 * Return 0 on success, a negative error code otherwise.
+	 */
+	int (*read)(unsigned int offset, uintptr_t buffer, size_t length,
+		    size_t *out_length);
+
+	/*
+	 * Execute a write memory operation.
+	 *
+	 * @offset: Offset in bytes to start write operation.
+	 * @buffer: Buffer to be written in device.
+	 * @length: Required length to be written in bytes.
+	 * Return 0 on success, a negative error code otherwise.
+	 */
+	int (*write)(unsigned int offset, uintptr_t buffer, size_t length);
+
+	/*
+	 * Look for an offset to be added to the given offset.
+	 *
+	 * @base: Base address of the area.
+	 * @offset: Offset in bytes to start read operation.
+	 * @extra_offset: [out] Offset to be added to the previous offset.
+	 * Return 0 on success, a negative error code otherwise.
+	 */
+	int (*seek)(uintptr_t base, unsigned int offset, size_t *extra_offset);
+} io_mtd_ops_t;
+
+typedef struct io_mtd_dev_spec {
+	unsigned long long device_size;
+	unsigned int erase_size;
+	size_t offset;
+	io_mtd_ops_t ops;
+} io_mtd_dev_spec_t;
+
+struct io_dev_connector;
+
+int register_io_dev_mtd(const struct io_dev_connector **dev_con);
+
+#endif /* IO_MTD_H */