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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * SWIM access through the IOP
3 * Written by Joshua M. Thompson
4 */
5
6/* IOP number and channel number for the SWIM */
7
8#define SWIM_IOP IOP_NUM_ISM
9#define SWIM_CHAN 1
10
11/* Command code: */
12
13#define CMD_INIT 0x01 /* Initialize */
14#define CMD_SHUTDOWN 0x02 /* Shutdown */
15#define CMD_START_POLL 0x03 /* Start insert/eject polling */
16#define CMD_STOP_POLL 0x04 /* Stop insert/eject polling */
17#define CMD_SETHFSTAG 0x05 /* Set HFS tag buffer address */
18#define CMD_STATUS 0x06 /* Status */
19#define CMD_EJECT 0x07 /* Eject */
20#define CMD_FORMAT 0x08 /* Format */
21#define CMD_FORMAT_VERIFY 0x09 /* Format and Verify */
22#define CMD_WRITE 0x0A /* Write */
23#define CMD_READ 0x0B /* Read */
24#define CMD_READ_VERIFY 0x0C /* Read and Verify */
25#define CMD_CACHE_CTRL 0x0D /* Cache control */
26#define CMD_TAGBUFF_CTRL 0x0E /* Tag buffer control */
27#define CMD_GET_ICON 0x0F /* Get Icon */
28
29/* Drive types: */
30
31/* note: apple sez DRV_FDHD is 4, but I get back a type */
32/* of 5 when I do a drive status check on my FDHD */
33
34#define DRV_NONE 0 /* No drive */
35#define DRV_UNKNOWN 1 /* Unspecified drive */
36#define DRV_400K 2 /* 400K */
37#define DRV_800K 3 /* 400K/800K */
38#define DRV_FDHD 5 /* 400K/800K/720K/1440K */
39#define DRV_HD20 7 /* Apple HD20 */
40
41/* Format types: */
42
43#define FMT_HD20 0x0001 /* Apple HD20 */
44#define FMT_400K 0x0002 /* 400K (GCR) */
45#define FMT_800K 0x0004 /* 800K (GCR) */
46#define FMT_720K 0x0008 /* 720K (MFM) */
47#define FMT_1440K 0x0010 /* 1.44M (MFM) */
48
49#define FMD_KIND_400K 1
50#define FMD_KIND_800K 2
51#define FMD_KIND_720K 3
52#define FMD_KIND_1440K 1
53
54/* Icon Flags: */
55
56#define ICON_MEDIA 0x01 /* Have IOP supply media icon */
57#define ICON_DRIVE 0x01 /* Have IOP supply drive icon */
58
59/* Error codes: */
60
61#define gcrOnMFMErr -400 /* GCR (400/800K) on HD media */
62#define verErr -84 /* verify failed */
63#define fmt2Err -83 /* can't get enough sync during format */
64#define fmt1Err -82 /* can't find sector 0 after track format */
65#define sectNFErr -81 /* can't find sector */
66#define seekErr -80 /* drive error during seek */
67#define spdAdjErr -79 /* can't set drive speed */
68#define twoSideErr -78 /* drive is single-sided */
69#define initIWMErr -77 /* error during initialization */
70#define tk0badErr -76 /* track zero is bad */
71#define cantStepErr -75 /* drive error during step */
72#define wrUnderrun -74 /* write underrun occurred */
73#define badDBtSlp -73 /* bad data bitslip marks */
74#define badDCksum -72 /* bad data checksum */
75#define noDtaMkErr -71 /* can't find data mark */
76#define badBtSlpErr -70 /* bad address bitslip marks */
77#define badCksmErr -69 /* bad address-mark checksum */
78#define dataVerErr -68 /* read-verify failed */
79#define noAdrMkErr -67 /* can't find an address mark */
80#define noNybErr -66 /* no nybbles? disk is probably degaussed */
81#define offLinErr -65 /* no disk in drive */
82#define noDriveErr -64 /* drive isn't connected */
83#define nsDrvErr -56 /* no such drive */
84#define paramErr -50 /* bad positioning information */
85#define wPrErr -44 /* write protected */
86#define openErr -23 /* already initialized */
87
88#ifndef __ASSEMBLY__
89
90struct swim_drvstatus {
91 __u16 curr_track; /* Current track number */
92 __u8 write_prot; /* 0x80 if disk is write protected */
93 __u8 disk_in_drive; /* 0x01 or 0x02 if a disk is in the drive */
94 __u8 installed; /* 0x01 if drive installed, 0xFF if not */
95 __u8 num_sides; /* 0x80 if two-sided format supported */
96 __u8 two_sided; /* 0xff if two-sided format diskette */
97 __u8 new_interface; /* 0x00 if old 400K drive, 0xFF if newer */
98 __u16 errors; /* Disk error count */
99 struct { /* 32 bits */
100 __u16 reserved;
101 __u16 :4;
102 __u16 external:1; /* Drive is external */
103 __u16 scsi:1; /* Drive is a SCSI drive */
104 __u16 fixed:1; /* Drive has fixed media */
105 __u16 secondary:1; /* Drive is secondary drive */
106 __u8 type; /* Drive type */
107 } info;
108 __u8 mfm_drive; /* 0xFF if this is an FDHD drive */
109 __u8 mfm_disk; /* 0xFF if 720K/1440K (MFM) disk */
110 __u8 mfm_format; /* 0x00 if 720K, 0xFF if 1440K */
111 __u8 ctlr_type; /* 0x00 if IWM, 0xFF if SWIM */
112 __u16 curr_format; /* Current format type */
113 __u16 allowed_fmt; /* Allowed format types */
114 __u32 num_blocks; /* Number of blocks on disk */
115 __u8 icon_flags; /* Icon flags */
116 __u8 unusued;
117};
118
119/* Commands issued from the host to the IOP: */
120
121struct swimcmd_init {
122 __u8 code; /* CMD_INIT */
123 __u8 unusued;
124 __u16 error;
125 __u8 drives[28]; /* drive type list */
126};
127
128struct swimcmd_startpoll {
129 __u8 code; /* CMD_START_POLL */
130 __u8 unusued;
131 __u16 error;
132};
133
134struct swimcmd_sethfstag {
135 __u8 code; /* CMD_SETHFSTAG */
136 __u8 unusued;
137 __u16 error;
138 caddr_t tagbuf; /* HFS tag buffer address */
139};
140
141struct swimcmd_status {
142 __u8 code; /* CMD_STATUS */
143 __u8 drive_num;
144 __u16 error;
145 struct swim_drvstatus status;
146};
147
148struct swimcmd_eject {
149 __u8 code; /* CMD_EJECT */
150 __u8 drive_num;
151 __u16 error;
152 struct swim_drvstatus status;
153};
154
155struct swimcmd_format {
156 __u8 code; /* CMD_FORMAT */
157 __u8 drive_num;
158 __u16 error;
159 union {
160 struct {
161 __u16 fmt; /* format kind */
162 __u8 hdrbyte; /* fmt byte for hdr (0=default) */
163 __u8 interleave; /* interleave (0 = default) */
164 caddr_t databuf; /* sector data buff (0=default */
165 caddr_t tagbuf; /* tag data buffer (0=default) */
166 } f;
167 struct swim_drvstatus status;
168 } p;
169};
170
171struct swimcmd_fmtverify {
172 __u8 code; /* CMD_FORMAT_VERIFY */
173 __u8 drive_num;
174 __u16 error;
175};
176
177struct swimcmd_rw {
178 __u8 code; /* CMD_READ, CMD_WRITE or CMD_READ_VERIFY */
179 __u8 drive_num;
180 __u16 error;
181 caddr_t buffer; /* R/W buffer address */
182 __u32 first_block; /* Starting block */
183 __u32 num_blocks; /* Number of blocks */
184 __u8 tag[12]; /* tag data */
185};
186
187struct swimcmd_cachectl {
188 __u8 code; /* CMD_CACHE_CTRL */
189 __u8 unused;
190 __u16 error;
191 __u8 enable; /* Nonzero to enable cache */
192 __u8 install; /* +1 = install, -1 = remove, 0 = neither */
193};
194
195struct swimcmd_tagbufctl {
196 __u8 code; /* CMD_TAGBUFF_CTRL */
197 __u8 unused;
198 __u16 error;
199 caddr_t buf; /* buffer address or 0 to disable */
200};
201
202struct swimcmd_geticon {
203 __u8 code; /* CMD_GET_ICON */
204 __u8 drive_num;
205 __u16 error;
206 caddr_t buffer; /* Nuffer address */
207 __u16 kind; /* 0 = media icon, 1 = drive icon */
208 __u16 unused;
209 __u16 max_bytes; /* maximum byte count */
210};
211
212/* Messages from the SWIM IOP to the host CPU: */
213
214struct swimmsg_status {
215 __u8 code; /* 1 = insert, 2 = eject, 3 = status changed */
216 __u8 drive_num;
217 __u16 error;
218 struct swim_drvstatus status;
219};
220
221#endif /* __ASSEMBLY__ */