/* * 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__ */