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/*
* Project: S.Ha.R.K.
*
* Coordinators:
* Giorgio Buttazzo <giorgio@sssup.it>
* Paolo Gai <pj@gandalf.sssup.it>
*
* Authors :
* Paolo Gai <pj@gandalf.sssup.it>
* Massimiliano Giorgi <massy@gandalf.sssup.it>
* Luca Abeni <luca@gandalf.sssup.it>
* (see the web pages for full authors list)
*
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
*
* http://www.sssup.it
* http://retis.sssup.it
* http://shark.sssup.it
*/
/***************************************
CVS : $Id: ide.h,v 1.2 2003-03-13 13:43:13 pj Exp $
Revision: $Revision: 1.2 $
Last update: $Date: 2003-03-13 13:43:13 $
Header file for all the modules of the IDE block device interface
sub-system.
***************************************/
/*
* Copyright (C) 1999,2000 Massimiliano Giorgi
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __IDE_H__
#define __IDE_H__
#include "glue.h"
#include "bdev.h"
#include "bqueue.h"
#include "ll/sys/cdefs.h"
__BEGIN_DECLS
/*+ max number of ide interface (must be <= 8) +*/
#define MAXIDEINTERFACES 4
/*---*/
/*
* CONSTANTS
*/
/*+ max number of "minor number" required +*/
#define MAXIDEMINOR (MAXIDEINTERFACES<<5)
/*+ max number of "logical partition" per hard disk +*/
#define MAXIDELODSK 16
/*+ number of physical region descriptors used by DMA bus master operations +*/
#define MAXPRDENTRIES 4
/*+ for a master hard disk +*/
#define IDE_MASTER 0x00
/*+ for a slave hard disk +*/
#define IDE_SLAVE 0x01
/*+ sector size in bytes +*/
#define IDE_SECTOR_SIZE 512
/*+ Log Level for errors +*/
#define IDEERRLOG KERN_ERR
/*+ Log Level for log +*/
#define IDELOG KERN_NOTICE
/*+ Log Level for debug purpose +*/
#define IDEDEBUGLOG KERN_DEBUG
/*
* for result
*/
/*+
This values are returned by the low level routine to indicate
an error.
+latex+ \\
No error +*/
#define IDE_OK 0
/*+ there are too much request pending +*/
#define IDE_ERR_TOOMUCHREQ -1
/*+ the interface is busy or can not do a command+*/
#define IDE_ERR_BUSY -2
/*+ the following codes are from the IDE error register +*/
#define IDE_ERR_BADBLOCK -3
#define IDE_ERR_CRCECC -4
#define IDE_ERR_IDNOTFOUND -5
#define IDE_ERR_ABORTCMD -6
#define IDE_ERR_TRACK00 -7
#define IDE_ERR_DAMNOTFOUND -8
/*+ generic error (when there are not other IDE_ERR_?? available) +*/
#define IDE_ERR_UNKNOWN -9
/*+ there was an interrupt, we aspect data but there is not data +*/
#define IDE_ERR_NODATA -10
/*+ there was an interrupt, we do not aspect data but there is data +*/
#define IDE_ERR_DATA -11
/*+ interface not ready for a command +*/
#define IDE_ERR_NOTREADY -12
/*+ a timeout waiting for a reply +*/
#define IDE_ERR_TIMEOUT -13
/*+ the interface must be busy but it is not +*/
#define IDE_ERR_NOTBUSY -14
/*+ device fault +*/
#define IDE_ERR_FAULT -15
/*+ we aspect to send data but there is no data request +*/
#define IDE_ERR_NODATAREQ -16
/*+ the DRDY signal is not preset +*/
#define IDE_ERR_NOTDRDY -17
/*+ DMA cycle error +*/
#define IDE_ERR_DMA -18
/*+ for the IDE_ERR_??? constants +*/
extern char *ide_error_msg[];
/*
* DATA STRUCTURES
*/
/*+
Information on IDE devices capabilities
+*/
struct ide_diskinfo {
__uint32_t use_lba:1; /*+ use LBA address translation +*/
__uint32_t use_dma:1; /*+ use old dma operation +*/
__uint32_t use_bm_dma:1; /*+ use new bus master dma operation +*/
__int8_t max_pio_mode; /*+ max pio mode supported (-1 no support) +*/
__int8_t max_dma_mode; /*+ max multi word dma support (-1 no support) +*/
__int8_t max_udma_mode; /*+ max ultra dma mode support (-1 no support) +*/
};
/*+
Information on IDE interfaces
+*/
struct ideinfo {
#ifdef _PARANOIA
__uint32_t magic; /*+ magic number +*/
#endif
__uint16_t io_port; /*+ I/O address +*/
__uint16_t io_port2; /*+ auxiliary I/O address +*/
__uint8_t irq; /*+ irq number +*/
__uint8_t dma; /*+ dma channel +*/
__uint16_t io_bmdma; /*+ I/O address for a bus master DMA cycle */
/* this must be 4-bytes aligned */
__uint32_t prd[MAXPRDENTRIES*2];
/*+ physical region descriptors (used by DMA) */
struct phdskinfo *pdisk[2]; /*+ physical disk pointer for master/slave +*/
struct ide_diskinfo info[2]; /*+ more disk information for master/slave +*/
bqueue_t queue[2];
int actreq; /*+ actual request that we are serving +*/
int actdrv; /*+ drive id of the actual request +*/
int errors; /*+ incremented for every error */
/* for the glue routines (see ideglue.c) */
__pid_t server; /*+ interface server pid +*/
} __attribute__ ((aligned (4)));
/*+
Information on minor devices
+*/
struct ideminorinfo {
#ifdef _PARANOIA
__uint32_t magic; /*+ magic number +*/
#endif
__blkcnt_t start; /*+ first block of this logical disk (partition) +*/
__blkcnt_t size; /*+ size of the logical disk (in sectors) +*/
__uint16_t used:1; /*+ is this entry used? +*/
__uint16_t blocked:1; /*+ is this entry blocked? (is someone using it?) +*/
};
/*
* DATA
*/
/* these are here because are used both ide.c and idelow.c */
extern struct ideinfo ide[MAXIDEINTERFACES];
extern int ide_showinfo_flag;
extern void *ide_parm_initserver;
/*
* FUNCTIONS
*/
/* register an hardware interface on first free slot */
int ide_register(__uint16_t io_port, __uint16_t io_port2,
__uint8_t irq,
__uint8_t dma, __uint16_t io_bmdma);
/* release resource used by the ideif interface */
void ide_unregister(int ideif);
/* scan an interface to found device */
int ide_scan(int ideif);
/* scan an hard disk to found a partitions scheme */
int ide_scandisk(int hwif, int drv);
struct ata_diskid;
struct atapi_diskid;
int do_ide_softreset(int ideif);
int ide_read(int ideif, int id, __blkcnt_t lsector, __uint8_t *buffer);
int ide_write(int ideif, int id, __blkcnt_t lsector, __uint8_t *buffer);
int ide_seek(int ideif, int id, __blkcnt_t lsector);
int ide_pidentify(int ideif, int id, struct atapi_diskid *buffer);
int ide_identify(int ideif, int id, struct ata_diskid *buffer);
int ide_enablelookahead(int ideif, int id);
int ide_disablelookahead(int ideif, int id);
int ide_settransfertmode(int ideif, int id, int mode);
TASK ide_server(int ideif);
#define is_ide_free(ideif) (ide[(ideif)].io_port==0)
#define mark_ide_free(ideif) (ide[(ideif)].io_port=0)
static inline int nextideif(void)
{
int ideif;
for (ideif=0;ideif<MAXIDEINTERFACES;ideif++)
if (is_ide_free(ideif)) break;
return ideif;
}
/*
* LOW LEVEL data structures
*/
/* ATA-4 */
/* obs: obsolete res: reserved ven: vendor specific */
/*+ IDENTIFY command response (from ATA 4 specifications) +*/
struct ata_diskid {
__uint16_t config;
__uint16_t def_cyls;
__uint16_t res2;
__uint16_t def_heads;
__uint16_t res4;
__uint16_t res5;
__uint16_t def_sects;
__uint16_t ven7;
__uint16_t ven8;
__uint16_t ven9;
__uint8_t serial[20];
__uint16_t ven20;
__uint16_t ven21;
__uint16_t obs22;
__uint8_t firmware[8];
__uint8_t model[40];
__uint16_t maxmulsect;
__uint16_t res48;
__uint16_t capabilities;
__uint16_t capabilities2;
__uint8_t ven51;
__uint8_t PIO_mode;
__uint16_t ven52;
__uint16_t fields_valid;
__uint16_t act_cyls; // 54
__uint16_t act_heads;
__uint16_t act_sects;
__uint16_t cur_capacity0;
__uint16_t cur_capacity1; // 58
__uint8_t multsect;
__uint8_t multsect_valid;
__uint32_t lba_capacity;
__uint16_t obs62;
__uint16_t DMA_mword;
__uint8_t eide_PIO_modes;
__uint8_t res64 ;
__uint16_t eide_dma_min;
__uint16_t eide_dma_time;
__uint16_t eide_pio;
__uint16_t eide_pio_iordy;
__uint16_t res69;
__uint16_t res70; // 70
__uint16_t res71;
__uint16_t res72;
__uint16_t res73;
__uint16_t res74;
__uint16_t queue_depth;
__uint16_t res76;
__uint16_t res77;
__uint16_t res78;
__uint16_t res79;
__uint16_t major_version;
__uint16_t minor_version;
__uint16_t command_sets;
__uint16_t command_sets2;
__uint16_t command_sets_ext;
__uint16_t command_sets_ena;
__uint16_t command_sets_ena2;
__uint16_t command_sets_def;
__uint16_t UDMA_cap;
__uint16_t erase_time;
__uint16_t erase_time2;
__uint16_t current_power;
__uint16_t reservedA[126-92+1];
__uint16_t status_notification;
__uint16_t security;
__uint16_t vendor[159-129+1];
__uint16_t reservedB[255-160+1];
} __attribute__((packed));
#define is_ATAdevice(p) ((p)->config&0x8000)
#define is_removable(p) ((p)->config&0x0080)
#define is_notremovable(p) ((p)->config&0x0040)
// 54 -> 58
#define is_actcurvalid(p) ((p)->fields_valid&0x0001)
// 64 -> 70
#define is_eidevalid(p) ((p)->fields_valid&0x0002)
// 88
#define is_udmavalid(p) ((p)->fields_valid&0x0004)
#define is_ATA(p) ((p)->major_version&0x02)
#define is_ATA2(p) ((p)->major_version&0x04)
#define is_ATA3(p) ((p)->major_version&0x08)
#define is_ATA4(p) ((p)->major_version&0x10)
#define is_LBAcapable(p) ( \
((p)->capabilities&0x0200) \
|| is_ATA3(p) \
|| is_ATA4(p) \
)
/*+ PIDENTIFY command response (for ATAPI device from ATA 4 specs) +*/
struct atapi_diskid {
__uint16_t config;
__uint16_t res1;
__uint16_t res2;
__uint16_t res3;
__uint16_t res4;
__uint16_t res5;
__uint16_t res6;
__uint16_t ven7;
__uint16_t ven8;
__uint16_t ven9;
__uint8_t serial[20];
__uint16_t res20;
__uint16_t res21;
__uint16_t res22;
__uint8_t firmware[8];
__uint8_t model[40];
__uint16_t res47;
__uint16_t res48;
__uint16_t capabilities;
__uint16_t res50;
__uint8_t ven51;
__uint8_t tPIO;
__uint16_t res52;
__uint16_t fields_valid;
__uint16_t res54; //54
__uint16_t res55;
__uint16_t res56;
__uint16_t res57;
__uint16_t res58; // 58
__uint16_t res59;
__uint16_t res60;
__uint16_t res61;
__uint16_t res62;
__uint16_t dma_mword;
__uint16_t eide_pio_modes; //64
__uint16_t eide_dma_min;
__uint16_t eide_dma_time;
__uint16_t eide_pio;
__uint16_t eide_pio_iordy;
__uint16_t res69;
__uint16_t res70; // 70
__uint16_t time_packet;
__uint16_t time_service;
__uint16_t res73;
__uint16_t res74;
__uint16_t queue_depth;
__uint16_t res76;
__uint16_t res77;
__uint16_t res78;
__uint16_t res79;
__uint16_t major_version;
__uint16_t minor_version;
__uint16_t command_sets;
__uint16_t command_sets2;
__uint16_t command_sets_ext;
__uint16_t command_sets_ena;
__uint16_t command_sets_ena2;
__uint16_t command_sets_def;
__uint16_t udma;
__uint16_t reservedA[126-89+1];
__uint16_t status_notification;
__uint16_t security;
__uint16_t vendor[159-129+1];
__uint16_t reservedB[255-160+1];
} __attribute__((packed));
#define is_ATAPIdevice(p) (((p)->config&0xc000)==0x8000)
//#define is_removable(p) ((p)->config&0x0080)
#define is_packet12capable(p) (((p)->conig&0x0003)==0x0000)
#define is_packet16capable(p) (((p)->conig&0x0003)==0x0001)
#define is_directdev(p) ((((p)->config&0x1f00)>>8)==0x00)
#define is_sequentialdev(p) ((((p)->config&0x1f00)>>8)==0x01)
#define is_printerdev(p) ((((p)->config&0x1f00)>>8)==0x02)
#define is_processordev(p) ((((p)->config&0x1f00)>>8)==0x03)
#define is_writeoncedev(p) ((((p)->config&0x1f00)>>8)==0x04)
#define is_cdromdev(p) ((((p)->config&0x1f00)>>8)==0x05)
#define is_scannerdev(p) ((((p)->config&0x1f00)>>8)==0x06)
#define is_opticalmemorydev(p) ((((p)->config&0x1f00)>>8)==0x07)
#define is_mediachengerdev(p) ((((p)->config&0x1f00)>>8)==0x08)
#define is_communicatordev(p) ((((p)->config&0x1f00)>>8)==0x09)
#define is_arraydev(p) ((((p)->config&0x1f00)>>8)==0x0c)
__END_DECLS
#endif