1 /*
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 /* cant 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
90 struct 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
121 struct swimcmd_init {
122 __u8 code; /* CMD_INIT */
123 __u8 unusued;
124 __u16 error;
125 __u8 drives[28]; /* drive type list */
126 };
127
128 struct swimcmd_startpoll {
129 __u8 code; /* CMD_START_POLL */
130 __u8 unusued;
131 __u16 error;
132 };
133
134 struct swimcmd_sethfstag {
135 __u8 code; /* CMD_SETHFSTAG */
136 __u8 unusued;
137 __u16 error;
138 caddr_t tagbuf; /* HFS tag buffer address */
139 };
140
141 struct swimcmd_status {
142 __u8 code; /* CMD_STATUS */
143 __u8 drive_num;
144 __u16 error;
145 struct swim_drvstatus status;
146 };
147
148 struct swimcmd_eject {
149 __u8 code; /* CMD_EJECT */
150 __u8 drive_num;
151 __u16 error;
152 struct swim_drvstatus status;
153 };
154
155 struct 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
171 struct swimcmd_fmtverify {
172 __u8 code; /* CMD_FORMAT_VERIFY */
173 __u8 drive_num;
174 __u16 error;
175 };
176
177 struct 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
187 struct 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
195 struct 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
202 struct 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
214 struct 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__ */
222
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