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/*
* SWIM access through the IOP
* Written by Joshua M. Thompson
*/
/* IOP number and channel number for the SWIM */
#define SWIM_IOP IOP_NUM_ISM
#define SWIM_CHAN 1
/* Command code: */
#define CMD_INIT 0x01 /* Initialize */
#define CMD_SHUTDOWN 0x02 /* Shutdown */
#define CMD_START_POLL 0x03 /* Start insert/eject polling */
#define CMD_STOP_POLL 0x04 /* Stop insert/eject polling */
#define CMD_SETHFSTAG 0x05 /* Set HFS tag buffer address */
#define CMD_STATUS 0x06 /* Status */
#define CMD_EJECT 0x07 /* Eject */
#define CMD_FORMAT 0x08 /* Format */
#define CMD_FORMAT_VERIFY 0x09 /* Format and Verify */
#define CMD_WRITE 0x0A /* Write */
#define CMD_READ 0x0B /* Read */
#define CMD_READ_VERIFY 0x0C /* Read and Verify */
#define CMD_CACHE_CTRL 0x0D /* Cache control */
#define CMD_TAGBUFF_CTRL 0x0E /* Tag buffer control */
#define CMD_GET_ICON 0x0F /* Get Icon */
/* Drive types: */
/* note: apple sez DRV_FDHD is 4, but I get back a type */
/* of 5 when I do a drive status check on my FDHD */
#define DRV_NONE 0 /* No drive */
#define DRV_UNKNOWN 1 /* Unspecified drive */
#define DRV_400K 2 /* 400K */
#define DRV_800K 3 /* 400K/800K */
#define DRV_FDHD 5 /* 400K/800K/720K/1440K */
#define DRV_HD20 7 /* Apple HD20 */
/* Format types: */
#define FMT_HD20 0x0001 /* Apple HD20 */
#define FMT_400K 0x0002 /* 400K (GCR) */
#define FMT_800K 0x0004 /* 800K (GCR) */
#define FMT_720K 0x0008 /* 720K (MFM) */
#define FMT_1440K 0x0010 /* 1.44M (MFM) */
#define FMD_KIND_400K 1
#define FMD_KIND_800K 2
#define FMD_KIND_720K 3
#define FMD_KIND_1440K 1
/* Icon Flags: */
#define ICON_MEDIA 0x01 /* Have IOP supply media icon */
#define ICON_DRIVE 0x01 /* Have IOP supply drive icon */
/* Error codes: */
#define gcrOnMFMErr -400 /* GCR (400/800K) on HD media */
#define verErr -84 /* verify failed */
#define fmt2Err -83 /* can't get enough sync during format */
#define fmt1Err -82 /* can't find sector 0 after track format */
#define sectNFErr -81 /* can't find sector */
#define seekErr -80 /* drive error during seek */
#define spdAdjErr -79 /* can't set drive speed */
#define twoSideErr -78 /* drive is single-sided */
#define initIWMErr -77 /* error during initialization */
#define tk0badErr -76 /* track zero is bad */
#define cantStepErr -75 /* drive error during step */
#define wrUnderrun -74 /* write underrun occurred */
#define badDBtSlp -73 /* bad data bitslip marks */
#define badDCksum -72 /* bad data checksum */
#define noDtaMkErr -71 /* can't find data mark */
#define badBtSlpErr -70 /* bad address bitslip marks */
#define badCksmErr -69 /* bad address-mark checksum */
#define dataVerErr -68 /* read-verify failed */
#define noAdrMkErr -67 /* can't find an address mark */
#define noNybErr -66 /* no nybbles? disk is probably degaussed */
#define offLinErr -65 /* no disk in drive */
#define noDriveErr -64 /* drive isn't connected */
#define nsDrvErr -56 /* no such drive */
#define paramErr -50 /* bad positioning information */
#define wPrErr -44 /* write protected */
#define openErr -23 /* already initialized */
#ifndef __ASSEMBLY__
struct swim_drvstatus {
__u16 curr_track; /* Current track number */
__u8 write_prot; /* 0x80 if disk is write protected */
__u8 disk_in_drive; /* 0x01 or 0x02 if a disk is in the drive */
__u8 installed; /* 0x01 if drive installed, 0xFF if not */
__u8 num_sides; /* 0x80 if two-sided format supported */
__u8 two_sided; /* 0xff if two-sided format diskette */
__u8 new_interface; /* 0x00 if old 400K drive, 0xFF if newer */
__u16 errors; /* Disk error count */
struct { /* 32 bits */
__u16 reserved;
__u16 :4;
__u16 external:1; /* Drive is external */
__u16 scsi:1; /* Drive is a SCSI drive */
__u16 fixed:1; /* Drive has fixed media */
__u16 secondary:1; /* Drive is secondary drive */
__u8 type; /* Drive type */
} info;
__u8 mfm_drive; /* 0xFF if this is an FDHD drive */
__u8 mfm_disk; /* 0xFF if 720K/1440K (MFM) disk */
__u8 mfm_format; /* 0x00 if 720K, 0xFF if 1440K */
__u8 ctlr_type; /* 0x00 if IWM, 0xFF if SWIM */
__u16 curr_format; /* Current format type */
__u16 allowed_fmt; /* Allowed format types */
__u32 num_blocks; /* Number of blocks on disk */
__u8 icon_flags; /* Icon flags */
__u8 unusued;
};
/* Commands issued from the host to the IOP: */
struct swimcmd_init {
__u8 code; /* CMD_INIT */
__u8 unusued;
__u16 error;
__u8 drives[28]; /* drive type list */
};
struct swimcmd_startpoll {
__u8 code; /* CMD_START_POLL */
__u8 unusued;
__u16 error;
};
struct swimcmd_sethfstag {
__u8 code; /* CMD_SETHFSTAG */
__u8 unusued;
__u16 error;
caddr_t tagbuf; /* HFS tag buffer address */
};
struct swimcmd_status {
__u8 code; /* CMD_STATUS */
__u8 drive_num;
__u16 error;
struct swim_drvstatus status;
};
struct swimcmd_eject {
__u8 code; /* CMD_EJECT */
__u8 drive_num;
__u16 error;
struct swim_drvstatus status;
};
struct swimcmd_format {
__u8 code; /* CMD_FORMAT */
__u8 drive_num;
__u16 error;
union {
struct {
__u16 fmt; /* format kind */
__u8 hdrbyte; /* fmt byte for hdr (0=default) */
__u8 interleave; /* interleave (0 = default) */
caddr_t databuf; /* sector data buff (0=default */
caddr_t tagbuf; /* tag data buffer (0=default) */
} f;
struct swim_drvstatus status;
} p;
};
struct swimcmd_fmtverify {
__u8 code; /* CMD_FORMAT_VERIFY */
__u8 drive_num;
__u16 error;
};
struct swimcmd_rw {
__u8 code; /* CMD_READ, CMD_WRITE or CMD_READ_VERIFY */
__u8 drive_num;
__u16 error;
caddr_t buffer; /* R/W buffer address */
__u32 first_block; /* Starting block */
__u32 num_blocks; /* Number of blocks */
__u8 tag[12]; /* tag data */
};
struct swimcmd_cachectl {
__u8 code; /* CMD_CACHE_CTRL */
__u8 unused;
__u16 error;
__u8 enable; /* Nonzero to enable cache */
__u8 install; /* +1 = install, -1 = remove, 0 = neither */
};
struct swimcmd_tagbufctl {
__u8 code; /* CMD_TAGBUFF_CTRL */
__u8 unused;
__u16 error;
caddr_t buf; /* buffer address or 0 to disable */
};
struct swimcmd_geticon {
__u8 code; /* CMD_GET_ICON */
__u8 drive_num;
__u16 error;
caddr_t buffer; /* Nuffer address */
__u16 kind; /* 0 = media icon, 1 = drive icon */
__u16 unused;
__u16 max_bytes; /* maximum byte count */
};
/* Messages from the SWIM IOP to the host CPU: */
struct swimmsg_status {
__u8 code; /* 1 = insert, 2 = eject, 3 = status changed */
__u8 drive_num;
__u16 error;
struct swim_drvstatus status;
};
#endif /* __ASSEMBLY__ */
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