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#ifndef CYGONCE_IDE_DISK_H
#define CYGONCE_IDE_DISK_H
//==========================================================================
//
// ide_disk.h
//
// IDE polled mode disk driver defines
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): iz
// Contributors:
// Date: 2004-10-16
//
//####DESCRIPTIONEND####
//
//==========================================================================
// IDE Register Indices
#define IDE_REG_DATA 0
#define IDE_REG_ERROR 1
#define IDE_REG_FEATURES 1
#define IDE_REG_COUNT 2
#define IDE_REG_REASON 2 // ATAPI
#define IDE_REG_LBALOW 3
#define IDE_REG_LBAMID 4
#define IDE_REG_LBAHI 5
#define IDE_REG_DEVICE 6
#define IDE_REG_STATUS 7
#define IDE_REG_COMMAND 7
#define IDE_STAT_BSY 0x80
#define IDE_STAT_DRDY 0x40
#define IDE_STAT_SERVICE 0x10
#define IDE_STAT_DRQ 0x08
#define IDE_STAT_CORR 0x04
#define IDE_STAT_ERR 0x01
#define IDE_REASON_REL 0x04
#define IDE_REASON_IO 0x02
#define IDE_REASON_COD 0x01
/* flag values */
#define IDE_DEV_PRESENT 1 // Device is present
#define IDE_DEV_PACKET 2 // Supports packet interface
#define IDE_DEV_ADDR48 3 // Supports 48bit addressing
typedef struct ide_identify_data_t_ {
cyg_uint16 general_conf; // 00 : general configuration
cyg_uint16 num_cylinders; // 01 : number of cylinders (default CHS trans)
cyg_uint16 reserved0; // 02 : reserved
cyg_uint16 num_heads; // 03 : number of heads (default CHS trans)
cyg_uint16 num_ub_per_track; // 04 : number of unformatted bytes per track
cyg_uint16 num_ub_per_sector; // 05 : number of unformatted bytes per sector
cyg_uint16 num_sectors; // 06 : number of sectors per track (default CHS trans)
cyg_uint16 num_card_sectors[2]; // 07-08 : number of sectors per card
cyg_uint16 reserved1; // 09 : reserved
cyg_uint16 serial[10]; // 10-19 : serial number (string)
cyg_uint16 buffer_type; // 20 : buffer type (dual ported)
cyg_uint16 buffer_size; // 21 : buffer size in 512 increments
cyg_uint16 num_ECC_bytes; // 22 : number of ECC bytes passed on R/W Long cmds
cyg_uint16 firmware_rev[4]; // 23-26 : firmware revision (string)
cyg_uint16 model_num[20]; // 27-46 : model number (string)
cyg_uint16 rw_mult_support; // 47 : max number of sectors on R/W multiple cmds
cyg_uint16 reserved2; // 48 : reserved
cyg_uint16 capabilities; // 49 : LBA, DMA, IORDY support indicator
cyg_uint16 reserved3; // 50 : reserved
cyg_uint16 pio_xferc_timing; // 51 : PIO data transfer cycle timing mode
cyg_uint16 dma_xferc_timing; // 52 : single word DMA data transfer cycle timing mode
cyg_uint16 cur_field_validity; // 53 : words 54-58 validity (0 == not valid)
cyg_uint16 cur_cylinders; // 54 : number of current cylinders
cyg_uint16 cur_heads; // 55 : number of current heads
cyg_uint16 cur_spt; // 56 : number of current sectors per track
cyg_uint16 cur_capacity[2]; // 57-58 : current capacity in sectors
cyg_uint16 mult_sectors; // 59 : multiple sector setting
cyg_uint16 lba_total_sectors[2]; // 60-61 : total sectors in LBA mode
cyg_uint16 sw_dma; // 62 : single word DMA support
cyg_uint16 mw_dma; // 63 : multi word DMA support
cyg_uint16 apio_modes; // 64 : advanced PIO transfer mode supported
cyg_uint16 min_dma_timing; // 65 : minimum multiword DMA transfer cycle
cyg_uint16 rec_dma_timing; // 66 : recommended multiword DMA cycle
cyg_uint16 min_pio_timing; // 67 : min PIO transfer time without flow control
cyg_uint16 min_pio_iordy_timing; // 68 : min PIO transfer time with IORDY flow control
// cyg_uint16 reserved4[187]; // 69-255: reserved
} ide_identify_data_t;
typedef struct ide_disk_info_t_ {
cyg_uint8 port;
cyg_uint8 chan;
} ide_disk_info_t;
// ----------------------------------------------------------------------------
static cyg_bool ide_disk_init(struct cyg_devtab_entry *tab);
static Cyg_ErrNo ide_disk_read(disk_channel *chan,
void *buf,
cyg_uint32 len,
cyg_uint32 block_num);
static Cyg_ErrNo ide_disk_write(disk_channel *chan,
const void *buf,
cyg_uint32 len,
cyg_uint32 block_num);
static Cyg_ErrNo ide_disk_get_config(disk_channel *chan,
cyg_uint32 key,
const void *xbuf,
cyg_uint32 *len);
static Cyg_ErrNo ide_disk_set_config(disk_channel *chan,
cyg_uint32 key,
const void *xbuf,
cyg_uint32 *len);
static Cyg_ErrNo ide_disk_lookup(struct cyg_devtab_entry **tab,
struct cyg_devtab_entry *sub_tab,
const char *name);
DISK_FUNS(ide_disk_funs,
ide_disk_read,
ide_disk_write,
ide_disk_get_config,
ide_disk_set_config
);
// ----------------------------------------------------------------------------
#define IDE_DISK_INSTANCE(_number_,_port_,_chan_,_mbr_supp_,_name_) \
static ide_disk_info_t ide_disk_info##_number_ = { \
port: (cyg_uint8) _port_, \
chan: (cyg_uint8) _chan_ \
}; \
DISK_CHANNEL(ide_disk_channel##_number_, \
ide_disk_funs, \
ide_disk_info##_number_, \
ide_disk_controller, \
_mbr_supp_, \
4 \
); \
BLOCK_DEVTAB_ENTRY(ide_disk_io##_number_, \
_name_, \
0, \
&cyg_io_disk_devio, \
ide_disk_init, \
ide_disk_lookup, \
&ide_disk_channel##_number_ \
);
// ----------------------------------------------------------------------------
#endif // CYGONCE_IDE_DISK_H
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