atapi.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* Copyright (c) 1996 Sun Microsystems, Inc. All Rights Reserved.
*/
#ifndef _ATAPI_H
#define _ATAPI_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/scsi/scsi.h>
/*
* Additional atapi status bits (redefinitions)
*/
#define ATE_ILI 0x01 /* Illegal length indication */
#define ATE_EOM 0x02 /* End of media detected */
#define ATE_MCR 0x08 /* Media change requested */
#define ATS_SERVICE 0x10 /* overlap operation needs service */
#define ATS_SENSE_KEY 0xf0 /* 4 bit sense key -see ata_sense_table */
#define ATS_SENSE_KEY_SHIFT 4 /* shift to get to ATS_SENSE_KEY */
/*
* Status bits from ATAPI Interrupt reason register (AT_COUNT) register
*/
#define ATI_COD 0x01 /* Command or Data */
#define ATI_IO 0x02 /* IO direction */
#define ATI_RELEASE 0x04 /* Release for ATAPI overlap */
/* ATAPI feature reg definitions */
#define ATF_OVERLAP 0x02
/*
* ATAPI commands.
*/
#define ATC_PI_SRESET 0x08 /* ATAPI soft reset */
#define ATC_PI_ID_DEV 0xa1 /* ATAPI identify device */
#define ATC_PI_PKT 0xa0 /* ATAPI packet command */
#define ATC_PI_SERVICE 0xa2 /* ATAPI overlap service command */
/*
* ATAPI IDENTIFY_DRIVE configuration word
*/
#define ATAPI_ID_CFG_PKT_SZ 0x3
#define ATAPI_ID_CFG_PKT_12B 0x0
#define ATAPI_ID_CFG_PKT_16B 0x1
#define ATAPI_ID_CFG_DRQ_TYPE 0x60
#define ATAPI_ID_CFG_DRQ_INTR 0x20
#define ATAPI_ID_CFG_DEV_TYPE 0x0f00
#define ATAPI_ID_CFG_DEV_SHFT 8
/*
* ATAPI IDENTIFY_DRIVE capabilities word
*/
#define ATAPI_ID_CAP_DMA 0x0100
#define ATAPI_ID_CAP_OVERLAP 0x2000
/*
* ATAPI SET FEATURE commands
*/
#define ATAPI_FEAT_RELEASE_INTR 0x5d
#define ATAPI_FEAT_SERVICE_INTR 0x5e
/*
* ATAPI bits
*/
#define ATAPI_SIG_HI 0xeb /* in high cylinder register */
#define ATAPI_SIG_LO 0x14 /* in low cylinder register */
#define ATAPIDRV(X) ((X)->ad_flags & AD_ATAPI)
#define ATAPIPKT(X) ((X)->ap_flags & AP_ATAPI)
#define ATAPI_SECTOR_SIZE 2048
#define ATAPI_MAX_BYTES_PER_DRQ 0xf800 /* 16 bits - 2KB ie 62KB */
#define ATAPI_HEADS 64
#define ATAPI_SECTORS_PER_TRK 32
/*
* Useful macros
*/
#define TRAN2CTL(tran) ((struct ata_controller *)((tran)->tran_hba_private))
#define ADDR2CTL(ap) (TRAN2CTL(ADDR2TRAN(ap)))
#define SPKT2APKT(spkt) (GCMD2APKT(PKTP2GCMDP(spkt)))
#define APKT2SPKT(apkt) (GCMDP2PKTP(APKT2GCMD(apkt)))
#define SADR2CHNO(ap) (((ap)->a_target > 1) ? 1 : 0)
/*
* public function prototypes
*/
int atapi_init(struct ata_controller *ata_ctlp);
void atapi_destroy(struct ata_controller *ata_ctlp);
int atapi_init_drive(struct ata_drive *ata_drvp);
void atapi_destroy_drive(struct ata_drive *ata_drvp);
int atapi_id(ddi_acc_handle_t handle, uint8_t *ioaddr, ushort_t *buf);
int atapi_signature(ddi_acc_handle_t handle, uint8_t *ioaddr);
int atapi_reset_drive(struct ata_drive *ata_drvp);
int atapi_ccballoc(gtgt_t *gtgtp, gcmd_t *gcmdp, int cmdlen,
int statuslen, int tgtlen, int ccblen);
void atapi_ccbfree(gcmd_t *gcmdp);
#ifdef DSC_OVERLAP_SUPPORT
void atapi_dsc_poll(struct ata_drive *ata_drvp);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _ATAPI_H */