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