1 /* 2 * Copyright (c) 2013 Corey Tabaka 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining 5 * a copy of this software and associated documentation files 6 * (the "Software"), to deal in the Software without restriction, 7 * including without limitation the rights to use, copy, modify, merge, 8 * publish, distribute, sublicense, and/or sell copies of the Software, 9 * and to permit persons to whom the Software is furnished to do so, 10 * subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 #ifndef __DEV_CLASS_BLOCK_H 24 #define __DEV_CLASS_BLOCK_H 25 26 #include <compiler.h> 27 #include <dev/driver.h> 28 29 /* block interface */ 30 struct block_ops { 31 struct driver_ops std; 32 33 ssize_t (*get_block_size)(struct device *dev); 34 ssize_t (*get_block_count)(struct device *dev); 35 36 ssize_t (*write)(struct device *dev, off_t offset, const void *buf, size_t count); 37 ssize_t (*read)(struct device *dev, off_t offset, void *buf, size_t count); 38 39 status_t (*flush)(struct device *dev); 40 }; 41 42 __BEGIN_CDECLS 43 44 ssize_t class_block_get_size(struct device *dev); 45 ssize_t class_block_get_count(struct device *dev); 46 ssize_t class_block_write(struct device *dev, off_t offset, const void *buf, size_t count); 47 ssize_t class_block_read(struct device *dev, off_t offset, void *buf, size_t count); 48 status_t class_block_flush(struct device *dev); 49 50 __END_CDECLS 51 52 #endif 53 54