/* * This file is part of the libpayload project. * * Copyright (C) 2012 secunet Security Networks AG * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _STORAGE_ATA_H #define _STORAGE_ATA_H #include <stdint.h> #include "storage.h" /* ATA commands */ enum { ATA_READ_DMA = 0xc8, ATA_READ_DMA_EXT = 0x25, ATA_IDENTIFY_DEVICE = 0xec, ATA_PACKET = 0xa0, ATA_IDENTIFY_PACKET_DEVICE = 0xa1, }; /* 16-bit-word indices into id structure from ATA_IDENTIFY_DEVICE */ enum { ATA_CMDS_AND_FEATURE_SETS = 82, ATA_ID_SECTOR_SIZE = 106, ATA_ID_LOGICAL_SECTOR_SIZE = 117, }; #define DEFAULT_ATA_SECTOR_SIZE 512 struct ata_dev; typedef struct ata_dev { storage_dev_t storage_dev; int (*identify)(struct ata_dev *, u8 *buf); ssize_t (*read_sectors)(struct ata_dev *, lba_t start, size_t count, u8 *buf); u8 read_cmd; u8 identify_cmd; size_t sector_size; size_t sector_size_shift; void (*detach_device)(struct ata_dev *); } ata_dev_t; int ata_attach_device(ata_dev_t *, storage_port_t); char *ata_strncpy(char *dest, const u16 *src, size_t n); int ata_set_sector_size(ata_dev_t *, u32 sector_size); void ata_initialize_storage_ops(ata_dev_t *); #endif