1 /* 2 * 3 * Copyright (C) 2012 secunet Security Networks AG 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _STORAGE_STORAGE_H 30 #define _STORAGE_STORAGE_H 31 32 #include <stdint.h> 33 #include <unistd.h> 34 35 #if !CONFIG(LP_STORAGE_64BIT_LBA) 36 typedef u32 lba_t; 37 #else 38 typedef u64 lba_t; 39 #endif 40 41 typedef enum { 42 PORT_TYPE_IDE = (1 << 0), 43 PORT_TYPE_SATA = (1 << 1), 44 PORT_TYPE_USB = (1 << 2), 45 PORT_TYPE_NVME = (1 << 3), 46 } storage_port_t; 47 48 typedef enum { 49 POLL_MEDIUM_ERROR = -3, 50 POLL_NO_DEVICE = -2, 51 POLL_ERROR = -1, 52 POLL_NO_MEDIUM = 0, 53 POLL_MEDIUM_PRESENT = 1, 54 } storage_poll_t; 55 56 struct storage_dev; 57 58 typedef struct storage_dev { 59 storage_port_t port_type; 60 61 storage_poll_t (*poll)(struct storage_dev *); 62 ssize_t (*read_blocks512)(struct storage_dev *, lba_t start, size_t count, unsigned char *buf); 63 ssize_t (*write_blocks512)(struct storage_dev *, lba_t start, size_t count, const unsigned char *buf); 64 65 void (*detach_device)(struct storage_dev *); 66 } storage_dev_t; 67 68 int storage_device_count(void); 69 int storage_attach_device(storage_dev_t *dev); 70 71 storage_poll_t storage_probe(size_t dev_num); 72 ssize_t storage_read_blocks512(size_t dev_num, lba_t start, size_t count, unsigned char *buf); 73 74 #endif 75