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1 | 8977f3c1 | bellard | /*
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2 | 890fa6be | bellard | * QEMU Floppy disk emulator (Intel 82078)
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3 | 5fafdf24 | ths | *
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4 | 3ccacc4a | blueswir1 | * Copyright (c) 2003, 2007 Jocelyn Mayer
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5 | 5fafdf24 | ths | *
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6 | 8977f3c1 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 8977f3c1 | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | 8977f3c1 | bellard | * in the Software without restriction, including without limitation the rights
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9 | 8977f3c1 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 8977f3c1 | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | 8977f3c1 | bellard | * furnished to do so, subject to the following conditions:
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12 | 8977f3c1 | bellard | *
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13 | 8977f3c1 | bellard | * The above copyright notice and this permission notice shall be included in
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14 | 8977f3c1 | bellard | * all copies or substantial portions of the Software.
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15 | 8977f3c1 | bellard | *
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16 | 8977f3c1 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 8977f3c1 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 8977f3c1 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 8977f3c1 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 8977f3c1 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 8977f3c1 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 8977f3c1 | bellard | * THE SOFTWARE.
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23 | 8977f3c1 | bellard | */
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24 | e80cfcfc | bellard | /*
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25 | e80cfcfc | bellard | * The controller is used in Sun4m systems in a slightly different
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26 | e80cfcfc | bellard | * way. There are changes in DOR register and DMA is not available.
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27 | e80cfcfc | bellard | */
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28 | 87ecb68b | pbrook | #include "hw.h" |
29 | 87ecb68b | pbrook | #include "fdc.h" |
30 | 87ecb68b | pbrook | #include "block.h" |
31 | 87ecb68b | pbrook | #include "qemu-timer.h" |
32 | 87ecb68b | pbrook | #include "isa.h" |
33 | 8977f3c1 | bellard | |
34 | 8977f3c1 | bellard | /********************************************************/
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35 | 8977f3c1 | bellard | /* debug Floppy devices */
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36 | 8977f3c1 | bellard | //#define DEBUG_FLOPPY
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37 | 8977f3c1 | bellard | |
38 | 8977f3c1 | bellard | #ifdef DEBUG_FLOPPY
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39 | 8977f3c1 | bellard | #define FLOPPY_DPRINTF(fmt, args...) \
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40 | 8977f3c1 | bellard | do { printf("FLOPPY: " fmt , ##args); } while (0) |
41 | 8977f3c1 | bellard | #else
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42 | 8977f3c1 | bellard | #define FLOPPY_DPRINTF(fmt, args...)
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43 | 8977f3c1 | bellard | #endif
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44 | 8977f3c1 | bellard | |
45 | 8977f3c1 | bellard | #define FLOPPY_ERROR(fmt, args...) \
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46 | 8977f3c1 | bellard | do { printf("FLOPPY ERROR: %s: " fmt, __func__ , ##args); } while (0) |
47 | 8977f3c1 | bellard | |
48 | 8977f3c1 | bellard | /********************************************************/
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49 | 8977f3c1 | bellard | /* Floppy drive emulation */
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50 | 8977f3c1 | bellard | |
51 | 8977f3c1 | bellard | /* Will always be a fixed parameter for us */
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52 | 8977f3c1 | bellard | #define FD_SECTOR_LEN 512 |
53 | 8977f3c1 | bellard | #define FD_SECTOR_SC 2 /* Sector size code */ |
54 | 8977f3c1 | bellard | |
55 | 8977f3c1 | bellard | /* Floppy disk drive emulation */
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56 | 8977f3c1 | bellard | typedef enum fdisk_type_t { |
57 | 8977f3c1 | bellard | FDRIVE_DISK_288 = 0x01, /* 2.88 MB disk */ |
58 | 8977f3c1 | bellard | FDRIVE_DISK_144 = 0x02, /* 1.44 MB disk */ |
59 | 8977f3c1 | bellard | FDRIVE_DISK_720 = 0x03, /* 720 kB disk */ |
60 | baca51fa | bellard | FDRIVE_DISK_USER = 0x04, /* User defined geometry */ |
61 | baca51fa | bellard | FDRIVE_DISK_NONE = 0x05, /* No disk */ |
62 | 8977f3c1 | bellard | } fdisk_type_t; |
63 | 8977f3c1 | bellard | |
64 | 8977f3c1 | bellard | typedef enum fdrive_type_t { |
65 | 8977f3c1 | bellard | FDRIVE_DRV_144 = 0x00, /* 1.44 MB 3"5 drive */ |
66 | 8977f3c1 | bellard | FDRIVE_DRV_288 = 0x01, /* 2.88 MB 3"5 drive */ |
67 | 8977f3c1 | bellard | FDRIVE_DRV_120 = 0x02, /* 1.2 MB 5"25 drive */ |
68 | 8977f3c1 | bellard | FDRIVE_DRV_NONE = 0x03, /* No drive connected */ |
69 | 8977f3c1 | bellard | } fdrive_type_t; |
70 | 8977f3c1 | bellard | |
71 | baca51fa | bellard | typedef enum fdrive_flags_t { |
72 | baca51fa | bellard | FDRIVE_MOTOR_ON = 0x01, /* motor on/off */ |
73 | baca51fa | bellard | } fdrive_flags_t; |
74 | baca51fa | bellard | |
75 | baca51fa | bellard | typedef enum fdisk_flags_t { |
76 | baca51fa | bellard | FDISK_DBL_SIDES = 0x01,
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77 | baca51fa | bellard | } fdisk_flags_t; |
78 | baca51fa | bellard | |
79 | 8977f3c1 | bellard | typedef struct fdrive_t { |
80 | 8977f3c1 | bellard | BlockDriverState *bs; |
81 | 8977f3c1 | bellard | /* Drive status */
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82 | 8977f3c1 | bellard | fdrive_type_t drive; |
83 | baca51fa | bellard | fdrive_flags_t drflags; |
84 | 8977f3c1 | bellard | uint8_t perpendicular; /* 2.88 MB access mode */
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85 | 8977f3c1 | bellard | /* Position */
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86 | 8977f3c1 | bellard | uint8_t head; |
87 | 8977f3c1 | bellard | uint8_t track; |
88 | 8977f3c1 | bellard | uint8_t sect; |
89 | 8977f3c1 | bellard | /* Last operation status */
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90 | 8977f3c1 | bellard | uint8_t dir; /* Direction */
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91 | 8977f3c1 | bellard | uint8_t rw; /* Read/write */
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92 | 8977f3c1 | bellard | /* Media */
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93 | baca51fa | bellard | fdisk_flags_t flags; |
94 | 8977f3c1 | bellard | uint8_t last_sect; /* Nb sector per track */
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95 | 8977f3c1 | bellard | uint8_t max_track; /* Nb of tracks */
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96 | baca51fa | bellard | uint16_t bps; /* Bytes per sector */
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97 | 8977f3c1 | bellard | uint8_t ro; /* Is read-only */
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98 | 8977f3c1 | bellard | } fdrive_t; |
99 | 8977f3c1 | bellard | |
100 | caed8802 | bellard | static void fd_init (fdrive_t *drv, BlockDriverState *bs) |
101 | 8977f3c1 | bellard | { |
102 | 8977f3c1 | bellard | /* Drive */
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103 | caed8802 | bellard | drv->bs = bs; |
104 | b939777c | bellard | drv->drive = FDRIVE_DRV_NONE; |
105 | baca51fa | bellard | drv->drflags = 0;
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106 | 8977f3c1 | bellard | drv->perpendicular = 0;
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107 | 8977f3c1 | bellard | /* Disk */
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108 | baca51fa | bellard | drv->last_sect = 0;
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109 | 8977f3c1 | bellard | drv->max_track = 0;
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110 | 8977f3c1 | bellard | } |
111 | 8977f3c1 | bellard | |
112 | 8977f3c1 | bellard | static int _fd_sector (uint8_t head, uint8_t track, |
113 | 4f431960 | j_mayer | uint8_t sect, uint8_t last_sect) |
114 | 8977f3c1 | bellard | { |
115 | 8977f3c1 | bellard | return (((track * 2) + head) * last_sect) + sect - 1; |
116 | 8977f3c1 | bellard | } |
117 | 8977f3c1 | bellard | |
118 | 8977f3c1 | bellard | /* Returns current position, in sectors, for given drive */
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119 | 8977f3c1 | bellard | static int fd_sector (fdrive_t *drv) |
120 | 8977f3c1 | bellard | { |
121 | 8977f3c1 | bellard | return _fd_sector(drv->head, drv->track, drv->sect, drv->last_sect);
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122 | 8977f3c1 | bellard | } |
123 | 8977f3c1 | bellard | |
124 | 8977f3c1 | bellard | static int fd_seek (fdrive_t *drv, uint8_t head, uint8_t track, uint8_t sect, |
125 | 8977f3c1 | bellard | int enable_seek)
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126 | 8977f3c1 | bellard | { |
127 | 8977f3c1 | bellard | uint32_t sector; |
128 | baca51fa | bellard | int ret;
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129 | baca51fa | bellard | |
130 | baca51fa | bellard | if (track > drv->max_track ||
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131 | 4f431960 | j_mayer | (head != 0 && (drv->flags & FDISK_DBL_SIDES) == 0)) { |
132 | ed5fd2cc | bellard | FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
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133 | ed5fd2cc | bellard | head, track, sect, 1,
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134 | ed5fd2cc | bellard | (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, |
135 | ed5fd2cc | bellard | drv->max_track, drv->last_sect); |
136 | 8977f3c1 | bellard | return 2; |
137 | 8977f3c1 | bellard | } |
138 | 8977f3c1 | bellard | if (sect > drv->last_sect) {
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139 | ed5fd2cc | bellard | FLOPPY_DPRINTF("try to read %d %02x %02x (max=%d %d %02x %02x)\n",
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140 | ed5fd2cc | bellard | head, track, sect, 1,
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141 | ed5fd2cc | bellard | (drv->flags & FDISK_DBL_SIDES) == 0 ? 0 : 1, |
142 | ed5fd2cc | bellard | drv->max_track, drv->last_sect); |
143 | 8977f3c1 | bellard | return 3; |
144 | 8977f3c1 | bellard | } |
145 | 8977f3c1 | bellard | sector = _fd_sector(head, track, sect, drv->last_sect); |
146 | baca51fa | bellard | ret = 0;
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147 | 8977f3c1 | bellard | if (sector != fd_sector(drv)) {
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148 | 8977f3c1 | bellard | #if 0
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149 | 8977f3c1 | bellard | if (!enable_seek) {
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150 | 8977f3c1 | bellard | FLOPPY_ERROR("no implicit seek %d %02x %02x (max=%d %02x %02x)\n",
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151 | 8977f3c1 | bellard | head, track, sect, 1, drv->max_track, drv->last_sect);
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152 | 8977f3c1 | bellard | return 4;
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153 | 8977f3c1 | bellard | }
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154 | 8977f3c1 | bellard | #endif
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155 | 8977f3c1 | bellard | drv->head = head; |
156 | 4f431960 | j_mayer | if (drv->track != track)
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157 | 4f431960 | j_mayer | ret = 1;
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158 | 8977f3c1 | bellard | drv->track = track; |
159 | 8977f3c1 | bellard | drv->sect = sect; |
160 | 8977f3c1 | bellard | } |
161 | 8977f3c1 | bellard | |
162 | baca51fa | bellard | return ret;
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163 | 8977f3c1 | bellard | } |
164 | 8977f3c1 | bellard | |
165 | 8977f3c1 | bellard | /* Set drive back to track 0 */
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166 | 8977f3c1 | bellard | static void fd_recalibrate (fdrive_t *drv) |
167 | 8977f3c1 | bellard | { |
168 | 8977f3c1 | bellard | FLOPPY_DPRINTF("recalibrate\n");
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169 | 8977f3c1 | bellard | drv->head = 0;
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170 | 8977f3c1 | bellard | drv->track = 0;
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171 | 8977f3c1 | bellard | drv->sect = 1;
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172 | 8977f3c1 | bellard | drv->dir = 1;
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173 | 8977f3c1 | bellard | drv->rw = 0;
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174 | 8977f3c1 | bellard | } |
175 | 8977f3c1 | bellard | |
176 | a541f297 | bellard | /* Recognize floppy formats */
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177 | a541f297 | bellard | typedef struct fd_format_t { |
178 | a541f297 | bellard | fdrive_type_t drive; |
179 | a541f297 | bellard | fdisk_type_t disk; |
180 | a541f297 | bellard | uint8_t last_sect; |
181 | a541f297 | bellard | uint8_t max_track; |
182 | a541f297 | bellard | uint8_t max_head; |
183 | a541f297 | bellard | const unsigned char *str; |
184 | a541f297 | bellard | } fd_format_t; |
185 | a541f297 | bellard | |
186 | 51a65271 | blueswir1 | static const fd_format_t fd_formats[] = { |
187 | a541f297 | bellard | /* First entry is default format */
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188 | a541f297 | bellard | /* 1.44 MB 3"1/2 floppy disks */
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189 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_144, 18, 80, 1, "1.44 MB 3\"1/2", }, |
190 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_144, 20, 80, 1, "1.6 MB 3\"1/2", }, |
191 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 80, 1, "1.68 MB 3\"1/2", }, |
192 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 82, 1, "1.72 MB 3\"1/2", }, |
193 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_144, 21, 83, 1, "1.74 MB 3\"1/2", }, |
194 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_144, 22, 80, 1, "1.76 MB 3\"1/2", }, |
195 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_144, 23, 80, 1, "1.84 MB 3\"1/2", }, |
196 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_144, 24, 80, 1, "1.92 MB 3\"1/2", }, |
197 | a541f297 | bellard | /* 2.88 MB 3"1/2 floppy disks */
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198 | a541f297 | bellard | { FDRIVE_DRV_288, FDRIVE_DISK_288, 36, 80, 1, "2.88 MB 3\"1/2", }, |
199 | a541f297 | bellard | { FDRIVE_DRV_288, FDRIVE_DISK_288, 39, 80, 1, "3.12 MB 3\"1/2", }, |
200 | a541f297 | bellard | { FDRIVE_DRV_288, FDRIVE_DISK_288, 40, 80, 1, "3.2 MB 3\"1/2", }, |
201 | a541f297 | bellard | { FDRIVE_DRV_288, FDRIVE_DISK_288, 44, 80, 1, "3.52 MB 3\"1/2", }, |
202 | a541f297 | bellard | { FDRIVE_DRV_288, FDRIVE_DISK_288, 48, 80, 1, "3.84 MB 3\"1/2", }, |
203 | a541f297 | bellard | /* 720 kB 3"1/2 floppy disks */
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204 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 1, "720 kB 3\"1/2", }, |
205 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 80, 1, "800 kB 3\"1/2", }, |
206 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 82, 1, "820 kB 3\"1/2", }, |
207 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_720, 10, 83, 1, "830 kB 3\"1/2", }, |
208 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_720, 13, 80, 1, "1.04 MB 3\"1/2", }, |
209 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_720, 14, 80, 1, "1.12 MB 3\"1/2", }, |
210 | a541f297 | bellard | /* 1.2 MB 5"1/4 floppy disks */
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211 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 15, 80, 1, "1.2 kB 5\"1/4", }, |
212 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 80, 1, "1.44 MB 5\"1/4", }, |
213 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 82, 1, "1.48 MB 5\"1/4", }, |
214 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 18, 83, 1, "1.49 MB 5\"1/4", }, |
215 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 20, 80, 1, "1.6 MB 5\"1/4", }, |
216 | a541f297 | bellard | /* 720 kB 5"1/4 floppy disks */
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217 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 80, 1, "720 kB 5\"1/4", }, |
218 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 11, 80, 1, "880 kB 5\"1/4", }, |
219 | a541f297 | bellard | /* 360 kB 5"1/4 floppy disks */
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220 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 1, "360 kB 5\"1/4", }, |
221 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 9, 40, 0, "180 kB 5\"1/4", }, |
222 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 41, 1, "410 kB 5\"1/4", }, |
223 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 10, 42, 1, "420 kB 5\"1/4", }, |
224 | 5fafdf24 | ths | /* 320 kB 5"1/4 floppy disks */
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225 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 1, "320 kB 5\"1/4", }, |
226 | a541f297 | bellard | { FDRIVE_DRV_120, FDRIVE_DISK_288, 8, 40, 0, "160 kB 5\"1/4", }, |
227 | a541f297 | bellard | /* 360 kB must match 5"1/4 better than 3"1/2... */
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228 | a541f297 | bellard | { FDRIVE_DRV_144, FDRIVE_DISK_720, 9, 80, 0, "360 kB 3\"1/2", }, |
229 | a541f297 | bellard | /* end */
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230 | a541f297 | bellard | { FDRIVE_DRV_NONE, FDRIVE_DISK_NONE, -1, -1, 0, NULL, }, |
231 | a541f297 | bellard | }; |
232 | a541f297 | bellard | |
233 | 8977f3c1 | bellard | /* Revalidate a disk drive after a disk change */
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234 | caed8802 | bellard | static void fd_revalidate (fdrive_t *drv) |
235 | 8977f3c1 | bellard | { |
236 | 51a65271 | blueswir1 | const fd_format_t *parse;
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237 | a541f297 | bellard | int64_t nb_sectors, size; |
238 | a541f297 | bellard | int i, first_match, match;
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239 | baca51fa | bellard | int nb_heads, max_track, last_sect, ro;
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240 | 8977f3c1 | bellard | |
241 | 8977f3c1 | bellard | FLOPPY_DPRINTF("revalidate\n");
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242 | a541f297 | bellard | if (drv->bs != NULL && bdrv_is_inserted(drv->bs)) { |
243 | 4f431960 | j_mayer | ro = bdrv_is_read_only(drv->bs); |
244 | 4f431960 | j_mayer | bdrv_get_geometry_hint(drv->bs, &nb_heads, &max_track, &last_sect); |
245 | 4f431960 | j_mayer | if (nb_heads != 0 && max_track != 0 && last_sect != 0) { |
246 | 4f431960 | j_mayer | FLOPPY_DPRINTF("User defined disk (%d %d %d)",
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247 | ed5fd2cc | bellard | nb_heads - 1, max_track, last_sect);
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248 | 4f431960 | j_mayer | } else {
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249 | 4f431960 | j_mayer | bdrv_get_geometry(drv->bs, &nb_sectors); |
250 | 4f431960 | j_mayer | match = -1;
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251 | 4f431960 | j_mayer | first_match = -1;
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252 | 4f431960 | j_mayer | for (i = 0;; i++) { |
253 | 4f431960 | j_mayer | parse = &fd_formats[i]; |
254 | 4f431960 | j_mayer | if (parse->drive == FDRIVE_DRV_NONE)
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255 | 4f431960 | j_mayer | break;
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256 | 4f431960 | j_mayer | if (drv->drive == parse->drive ||
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257 | 4f431960 | j_mayer | drv->drive == FDRIVE_DRV_NONE) { |
258 | 4f431960 | j_mayer | size = (parse->max_head + 1) * parse->max_track *
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259 | 4f431960 | j_mayer | parse->last_sect; |
260 | 4f431960 | j_mayer | if (nb_sectors == size) {
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261 | 4f431960 | j_mayer | match = i; |
262 | 4f431960 | j_mayer | break;
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263 | 4f431960 | j_mayer | } |
264 | 4f431960 | j_mayer | if (first_match == -1) |
265 | 4f431960 | j_mayer | first_match = i; |
266 | 4f431960 | j_mayer | } |
267 | 4f431960 | j_mayer | } |
268 | 4f431960 | j_mayer | if (match == -1) { |
269 | 4f431960 | j_mayer | if (first_match == -1) |
270 | 4f431960 | j_mayer | match = 1;
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271 | 4f431960 | j_mayer | else
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272 | 4f431960 | j_mayer | match = first_match; |
273 | 4f431960 | j_mayer | parse = &fd_formats[match]; |
274 | 4f431960 | j_mayer | } |
275 | 4f431960 | j_mayer | nb_heads = parse->max_head + 1;
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276 | 4f431960 | j_mayer | max_track = parse->max_track; |
277 | 4f431960 | j_mayer | last_sect = parse->last_sect; |
278 | 4f431960 | j_mayer | drv->drive = parse->drive; |
279 | 4f431960 | j_mayer | FLOPPY_DPRINTF("%s floppy disk (%d h %d t %d s) %s\n", parse->str,
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280 | ed5fd2cc | bellard | nb_heads, max_track, last_sect, ro ? "ro" : "rw"); |
281 | 4f431960 | j_mayer | } |
282 | 4f431960 | j_mayer | if (nb_heads == 1) { |
283 | 4f431960 | j_mayer | drv->flags &= ~FDISK_DBL_SIDES; |
284 | 4f431960 | j_mayer | } else {
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285 | 4f431960 | j_mayer | drv->flags |= FDISK_DBL_SIDES; |
286 | 4f431960 | j_mayer | } |
287 | 4f431960 | j_mayer | drv->max_track = max_track; |
288 | 4f431960 | j_mayer | drv->last_sect = last_sect; |
289 | 4f431960 | j_mayer | drv->ro = ro; |
290 | 8977f3c1 | bellard | } else {
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291 | 4f431960 | j_mayer | FLOPPY_DPRINTF("No disk in drive\n");
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292 | baca51fa | bellard | drv->last_sect = 0;
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293 | 4f431960 | j_mayer | drv->max_track = 0;
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294 | 4f431960 | j_mayer | drv->flags &= ~FDISK_DBL_SIDES; |
295 | 8977f3c1 | bellard | } |
296 | caed8802 | bellard | } |
297 | caed8802 | bellard | |
298 | 8977f3c1 | bellard | /* Motor control */
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299 | 8977f3c1 | bellard | static void fd_start (fdrive_t *drv) |
300 | 8977f3c1 | bellard | { |
301 | baca51fa | bellard | drv->drflags |= FDRIVE_MOTOR_ON; |
302 | 8977f3c1 | bellard | } |
303 | 8977f3c1 | bellard | |
304 | 8977f3c1 | bellard | static void fd_stop (fdrive_t *drv) |
305 | 8977f3c1 | bellard | { |
306 | baca51fa | bellard | drv->drflags &= ~FDRIVE_MOTOR_ON; |
307 | 8977f3c1 | bellard | } |
308 | 8977f3c1 | bellard | |
309 | 8977f3c1 | bellard | /* Re-initialise a drives (motor off, repositioned) */
|
310 | 8977f3c1 | bellard | static void fd_reset (fdrive_t *drv) |
311 | 8977f3c1 | bellard | { |
312 | 8977f3c1 | bellard | fd_stop(drv); |
313 | 8977f3c1 | bellard | fd_recalibrate(drv); |
314 | 8977f3c1 | bellard | } |
315 | 8977f3c1 | bellard | |
316 | 8977f3c1 | bellard | /********************************************************/
|
317 | 4b19ec0c | bellard | /* Intel 82078 floppy disk controller emulation */
|
318 | 8977f3c1 | bellard | |
319 | baca51fa | bellard | static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq); |
320 | baca51fa | bellard | static void fdctrl_reset_fifo (fdctrl_t *fdctrl); |
321 | 85571bc7 | bellard | static int fdctrl_transfer_handler (void *opaque, int nchan, |
322 | 85571bc7 | bellard | int dma_pos, int dma_len); |
323 | baca51fa | bellard | static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status); |
324 | ed5fd2cc | bellard | static void fdctrl_result_timer(void *opaque); |
325 | baca51fa | bellard | |
326 | baca51fa | bellard | static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl);
|
327 | baca51fa | bellard | static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl);
|
328 | baca51fa | bellard | static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value); |
329 | baca51fa | bellard | static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl);
|
330 | baca51fa | bellard | static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value); |
331 | baca51fa | bellard | static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl);
|
332 | baca51fa | bellard | static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value); |
333 | baca51fa | bellard | static uint32_t fdctrl_read_data (fdctrl_t *fdctrl);
|
334 | baca51fa | bellard | static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value); |
335 | baca51fa | bellard | static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl);
|
336 | 8977f3c1 | bellard | |
337 | 8977f3c1 | bellard | enum {
|
338 | ed5fd2cc | bellard | FD_CTRL_ACTIVE = 0x01, /* XXX: suppress that */ |
339 | 8977f3c1 | bellard | FD_CTRL_RESET = 0x02,
|
340 | ed5fd2cc | bellard | FD_CTRL_SLEEP = 0x04, /* XXX: suppress that */ |
341 | ed5fd2cc | bellard | FD_CTRL_BUSY = 0x08, /* dma transfer in progress */ |
342 | 8977f3c1 | bellard | FD_CTRL_INTR = 0x10,
|
343 | 8977f3c1 | bellard | }; |
344 | 8977f3c1 | bellard | |
345 | 8977f3c1 | bellard | enum {
|
346 | 8977f3c1 | bellard | FD_DIR_WRITE = 0,
|
347 | 8977f3c1 | bellard | FD_DIR_READ = 1,
|
348 | 8977f3c1 | bellard | FD_DIR_SCANE = 2,
|
349 | 8977f3c1 | bellard | FD_DIR_SCANL = 3,
|
350 | 8977f3c1 | bellard | FD_DIR_SCANH = 4,
|
351 | 8977f3c1 | bellard | }; |
352 | 8977f3c1 | bellard | |
353 | 8977f3c1 | bellard | enum {
|
354 | 8977f3c1 | bellard | FD_STATE_CMD = 0x00,
|
355 | 8977f3c1 | bellard | FD_STATE_STATUS = 0x01,
|
356 | 8977f3c1 | bellard | FD_STATE_DATA = 0x02,
|
357 | 8977f3c1 | bellard | FD_STATE_STATE = 0x03,
|
358 | 8977f3c1 | bellard | FD_STATE_MULTI = 0x10,
|
359 | 8977f3c1 | bellard | FD_STATE_SEEK = 0x20,
|
360 | baca51fa | bellard | FD_STATE_FORMAT = 0x40,
|
361 | 8977f3c1 | bellard | }; |
362 | 8977f3c1 | bellard | |
363 | 8977f3c1 | bellard | #define FD_STATE(state) ((state) & FD_STATE_STATE)
|
364 | baca51fa | bellard | #define FD_SET_STATE(state, new_state) \
|
365 | baca51fa | bellard | do { (state) = ((state) & ~FD_STATE_STATE) | (new_state); } while (0) |
366 | 8977f3c1 | bellard | #define FD_MULTI_TRACK(state) ((state) & FD_STATE_MULTI)
|
367 | 8977f3c1 | bellard | #define FD_DID_SEEK(state) ((state) & FD_STATE_SEEK)
|
368 | baca51fa | bellard | #define FD_FORMAT_CMD(state) ((state) & FD_STATE_FORMAT)
|
369 | 8977f3c1 | bellard | |
370 | baca51fa | bellard | struct fdctrl_t {
|
371 | baca51fa | bellard | fdctrl_t *fdctrl; |
372 | 4b19ec0c | bellard | /* Controller's identification */
|
373 | 8977f3c1 | bellard | uint8_t version; |
374 | 8977f3c1 | bellard | /* HW */
|
375 | d537cf6c | pbrook | qemu_irq irq; |
376 | 8977f3c1 | bellard | int dma_chann;
|
377 | 5dcb6b91 | blueswir1 | target_phys_addr_t io_base; |
378 | 4b19ec0c | bellard | /* Controller state */
|
379 | ed5fd2cc | bellard | QEMUTimer *result_timer; |
380 | 8977f3c1 | bellard | uint8_t state; |
381 | 8977f3c1 | bellard | uint8_t dma_en; |
382 | 8977f3c1 | bellard | uint8_t cur_drv; |
383 | 8977f3c1 | bellard | uint8_t bootsel; |
384 | 8977f3c1 | bellard | /* Command FIFO */
|
385 | 8977f3c1 | bellard | uint8_t fifo[FD_SECTOR_LEN]; |
386 | 8977f3c1 | bellard | uint32_t data_pos; |
387 | 8977f3c1 | bellard | uint32_t data_len; |
388 | 8977f3c1 | bellard | uint8_t data_state; |
389 | 8977f3c1 | bellard | uint8_t data_dir; |
390 | 8977f3c1 | bellard | uint8_t int_status; |
391 | 890fa6be | bellard | uint8_t eot; /* last wanted sector */
|
392 | 8977f3c1 | bellard | /* States kept only to be returned back */
|
393 | 8977f3c1 | bellard | /* Timers state */
|
394 | 8977f3c1 | bellard | uint8_t timer0; |
395 | 8977f3c1 | bellard | uint8_t timer1; |
396 | 8977f3c1 | bellard | /* precompensation */
|
397 | 8977f3c1 | bellard | uint8_t precomp_trk; |
398 | 8977f3c1 | bellard | uint8_t config; |
399 | 8977f3c1 | bellard | uint8_t lock; |
400 | 8977f3c1 | bellard | /* Power down config (also with status regB access mode */
|
401 | 8977f3c1 | bellard | uint8_t pwrd; |
402 | 741402f9 | blueswir1 | /* Sun4m quirks? */
|
403 | a06e5a3c | blueswir1 | int sun4m;
|
404 | 8977f3c1 | bellard | /* Floppy drives */
|
405 | 8977f3c1 | bellard | fdrive_t drives[2];
|
406 | baca51fa | bellard | }; |
407 | baca51fa | bellard | |
408 | baca51fa | bellard | static uint32_t fdctrl_read (void *opaque, uint32_t reg) |
409 | baca51fa | bellard | { |
410 | baca51fa | bellard | fdctrl_t *fdctrl = opaque; |
411 | baca51fa | bellard | uint32_t retval; |
412 | baca51fa | bellard | |
413 | a541f297 | bellard | switch (reg & 0x07) { |
414 | 6f7e9aec | bellard | case 0x00: |
415 | a06e5a3c | blueswir1 | if (fdctrl->sun4m) {
|
416 | 741402f9 | blueswir1 | // Identify to Linux as S82078B
|
417 | 741402f9 | blueswir1 | retval = fdctrl_read_statusB(fdctrl); |
418 | 741402f9 | blueswir1 | } else {
|
419 | 741402f9 | blueswir1 | retval = (uint32_t)(-1);
|
420 | 741402f9 | blueswir1 | } |
421 | 4f431960 | j_mayer | break;
|
422 | a541f297 | bellard | case 0x01: |
423 | 4f431960 | j_mayer | retval = fdctrl_read_statusB(fdctrl); |
424 | 4f431960 | j_mayer | break;
|
425 | a541f297 | bellard | case 0x02: |
426 | 4f431960 | j_mayer | retval = fdctrl_read_dor(fdctrl); |
427 | 4f431960 | j_mayer | break;
|
428 | a541f297 | bellard | case 0x03: |
429 | baca51fa | bellard | retval = fdctrl_read_tape(fdctrl); |
430 | 4f431960 | j_mayer | break;
|
431 | a541f297 | bellard | case 0x04: |
432 | baca51fa | bellard | retval = fdctrl_read_main_status(fdctrl); |
433 | 4f431960 | j_mayer | break;
|
434 | a541f297 | bellard | case 0x05: |
435 | baca51fa | bellard | retval = fdctrl_read_data(fdctrl); |
436 | 4f431960 | j_mayer | break;
|
437 | a541f297 | bellard | case 0x07: |
438 | baca51fa | bellard | retval = fdctrl_read_dir(fdctrl); |
439 | 4f431960 | j_mayer | break;
|
440 | a541f297 | bellard | default:
|
441 | 4f431960 | j_mayer | retval = (uint32_t)(-1);
|
442 | 4f431960 | j_mayer | break;
|
443 | a541f297 | bellard | } |
444 | ed5fd2cc | bellard | FLOPPY_DPRINTF("read reg%d: 0x%02x\n", reg & 7, retval); |
445 | baca51fa | bellard | |
446 | baca51fa | bellard | return retval;
|
447 | baca51fa | bellard | } |
448 | baca51fa | bellard | |
449 | baca51fa | bellard | static void fdctrl_write (void *opaque, uint32_t reg, uint32_t value) |
450 | baca51fa | bellard | { |
451 | baca51fa | bellard | fdctrl_t *fdctrl = opaque; |
452 | baca51fa | bellard | |
453 | ed5fd2cc | bellard | FLOPPY_DPRINTF("write reg%d: 0x%02x\n", reg & 7, value); |
454 | ed5fd2cc | bellard | |
455 | a541f297 | bellard | switch (reg & 0x07) { |
456 | a541f297 | bellard | case 0x02: |
457 | 4f431960 | j_mayer | fdctrl_write_dor(fdctrl, value); |
458 | 4f431960 | j_mayer | break;
|
459 | a541f297 | bellard | case 0x03: |
460 | baca51fa | bellard | fdctrl_write_tape(fdctrl, value); |
461 | 4f431960 | j_mayer | break;
|
462 | a541f297 | bellard | case 0x04: |
463 | baca51fa | bellard | fdctrl_write_rate(fdctrl, value); |
464 | 4f431960 | j_mayer | break;
|
465 | a541f297 | bellard | case 0x05: |
466 | baca51fa | bellard | fdctrl_write_data(fdctrl, value); |
467 | 4f431960 | j_mayer | break;
|
468 | a541f297 | bellard | default:
|
469 | 4f431960 | j_mayer | break;
|
470 | a541f297 | bellard | } |
471 | baca51fa | bellard | } |
472 | baca51fa | bellard | |
473 | 62a46c61 | bellard | static uint32_t fdctrl_read_mem (void *opaque, target_phys_addr_t reg) |
474 | 62a46c61 | bellard | { |
475 | 5dcb6b91 | blueswir1 | return fdctrl_read(opaque, (uint32_t)reg);
|
476 | 62a46c61 | bellard | } |
477 | 62a46c61 | bellard | |
478 | 5fafdf24 | ths | static void fdctrl_write_mem (void *opaque, |
479 | 62a46c61 | bellard | target_phys_addr_t reg, uint32_t value) |
480 | 62a46c61 | bellard | { |
481 | 5dcb6b91 | blueswir1 | fdctrl_write(opaque, (uint32_t)reg, value); |
482 | 62a46c61 | bellard | } |
483 | 62a46c61 | bellard | |
484 | e80cfcfc | bellard | static CPUReadMemoryFunc *fdctrl_mem_read[3] = { |
485 | 62a46c61 | bellard | fdctrl_read_mem, |
486 | 62a46c61 | bellard | fdctrl_read_mem, |
487 | 62a46c61 | bellard | fdctrl_read_mem, |
488 | e80cfcfc | bellard | }; |
489 | e80cfcfc | bellard | |
490 | e80cfcfc | bellard | static CPUWriteMemoryFunc *fdctrl_mem_write[3] = { |
491 | 62a46c61 | bellard | fdctrl_write_mem, |
492 | 62a46c61 | bellard | fdctrl_write_mem, |
493 | 62a46c61 | bellard | fdctrl_write_mem, |
494 | e80cfcfc | bellard | }; |
495 | e80cfcfc | bellard | |
496 | 3ccacc4a | blueswir1 | static void fd_save (QEMUFile *f, fdrive_t *fd) |
497 | 3ccacc4a | blueswir1 | { |
498 | 3ccacc4a | blueswir1 | uint8_t tmp; |
499 | 3ccacc4a | blueswir1 | |
500 | 3ccacc4a | blueswir1 | tmp = fd->drflags; |
501 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &tmp); |
502 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &fd->head); |
503 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &fd->track); |
504 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &fd->sect); |
505 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &fd->dir); |
506 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &fd->rw); |
507 | 3ccacc4a | blueswir1 | } |
508 | 3ccacc4a | blueswir1 | |
509 | 3ccacc4a | blueswir1 | static void fdc_save (QEMUFile *f, void *opaque) |
510 | 3ccacc4a | blueswir1 | { |
511 | 3ccacc4a | blueswir1 | fdctrl_t *s = opaque; |
512 | 3ccacc4a | blueswir1 | |
513 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->state); |
514 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->dma_en); |
515 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->cur_drv); |
516 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->bootsel); |
517 | 3ccacc4a | blueswir1 | qemu_put_buffer(f, s->fifo, FD_SECTOR_LEN); |
518 | 3ccacc4a | blueswir1 | qemu_put_be32s(f, &s->data_pos); |
519 | 3ccacc4a | blueswir1 | qemu_put_be32s(f, &s->data_len); |
520 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->data_state); |
521 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->data_dir); |
522 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->int_status); |
523 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->eot); |
524 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->timer0); |
525 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->timer1); |
526 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->precomp_trk); |
527 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->config); |
528 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->lock); |
529 | 3ccacc4a | blueswir1 | qemu_put_8s(f, &s->pwrd); |
530 | 3ccacc4a | blueswir1 | fd_save(f, &s->drives[0]);
|
531 | 3ccacc4a | blueswir1 | fd_save(f, &s->drives[1]);
|
532 | 3ccacc4a | blueswir1 | } |
533 | 3ccacc4a | blueswir1 | |
534 | 3ccacc4a | blueswir1 | static int fd_load (QEMUFile *f, fdrive_t *fd) |
535 | 3ccacc4a | blueswir1 | { |
536 | 3ccacc4a | blueswir1 | uint8_t tmp; |
537 | 3ccacc4a | blueswir1 | |
538 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &tmp); |
539 | 3ccacc4a | blueswir1 | fd->drflags = tmp; |
540 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &fd->head); |
541 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &fd->track); |
542 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &fd->sect); |
543 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &fd->dir); |
544 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &fd->rw); |
545 | 3ccacc4a | blueswir1 | |
546 | 3ccacc4a | blueswir1 | return 0; |
547 | 3ccacc4a | blueswir1 | } |
548 | 3ccacc4a | blueswir1 | |
549 | 3ccacc4a | blueswir1 | static int fdc_load (QEMUFile *f, void *opaque, int version_id) |
550 | 3ccacc4a | blueswir1 | { |
551 | 3ccacc4a | blueswir1 | fdctrl_t *s = opaque; |
552 | 3ccacc4a | blueswir1 | int ret;
|
553 | 3ccacc4a | blueswir1 | |
554 | 3ccacc4a | blueswir1 | if (version_id != 1) |
555 | 3ccacc4a | blueswir1 | return -EINVAL;
|
556 | 3ccacc4a | blueswir1 | |
557 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->state); |
558 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->dma_en); |
559 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->cur_drv); |
560 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->bootsel); |
561 | 3ccacc4a | blueswir1 | qemu_get_buffer(f, s->fifo, FD_SECTOR_LEN); |
562 | 3ccacc4a | blueswir1 | qemu_get_be32s(f, &s->data_pos); |
563 | 3ccacc4a | blueswir1 | qemu_get_be32s(f, &s->data_len); |
564 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->data_state); |
565 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->data_dir); |
566 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->int_status); |
567 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->eot); |
568 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->timer0); |
569 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->timer1); |
570 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->precomp_trk); |
571 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->config); |
572 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->lock); |
573 | 3ccacc4a | blueswir1 | qemu_get_8s(f, &s->pwrd); |
574 | 3ccacc4a | blueswir1 | |
575 | 3ccacc4a | blueswir1 | ret = fd_load(f, &s->drives[0]);
|
576 | 3ccacc4a | blueswir1 | if (ret == 0) |
577 | 3ccacc4a | blueswir1 | ret = fd_load(f, &s->drives[1]);
|
578 | 3ccacc4a | blueswir1 | |
579 | 3ccacc4a | blueswir1 | return ret;
|
580 | 3ccacc4a | blueswir1 | } |
581 | 3ccacc4a | blueswir1 | |
582 | 3ccacc4a | blueswir1 | static void fdctrl_external_reset(void *opaque) |
583 | 3ccacc4a | blueswir1 | { |
584 | 3ccacc4a | blueswir1 | fdctrl_t *s = opaque; |
585 | 3ccacc4a | blueswir1 | |
586 | 3ccacc4a | blueswir1 | fdctrl_reset(s, 0);
|
587 | 3ccacc4a | blueswir1 | } |
588 | 3ccacc4a | blueswir1 | |
589 | 5fafdf24 | ths | fdctrl_t *fdctrl_init (qemu_irq irq, int dma_chann, int mem_mapped, |
590 | 5dcb6b91 | blueswir1 | target_phys_addr_t io_base, |
591 | baca51fa | bellard | BlockDriverState **fds) |
592 | 8977f3c1 | bellard | { |
593 | baca51fa | bellard | fdctrl_t *fdctrl; |
594 | e80cfcfc | bellard | int io_mem;
|
595 | 8977f3c1 | bellard | int i;
|
596 | 8977f3c1 | bellard | |
597 | 4b19ec0c | bellard | FLOPPY_DPRINTF("init controller\n");
|
598 | baca51fa | bellard | fdctrl = qemu_mallocz(sizeof(fdctrl_t));
|
599 | baca51fa | bellard | if (!fdctrl)
|
600 | baca51fa | bellard | return NULL; |
601 | 5fafdf24 | ths | fdctrl->result_timer = qemu_new_timer(vm_clock, |
602 | ed5fd2cc | bellard | fdctrl_result_timer, fdctrl); |
603 | ed5fd2cc | bellard | |
604 | 4b19ec0c | bellard | fdctrl->version = 0x90; /* Intel 82078 controller */ |
605 | d537cf6c | pbrook | fdctrl->irq = irq; |
606 | baca51fa | bellard | fdctrl->dma_chann = dma_chann; |
607 | baca51fa | bellard | fdctrl->io_base = io_base; |
608 | a541f297 | bellard | fdctrl->config = 0x60; /* Implicit seek, polling & FIFO enabled */ |
609 | a06e5a3c | blueswir1 | fdctrl->sun4m = 0;
|
610 | baca51fa | bellard | if (fdctrl->dma_chann != -1) { |
611 | baca51fa | bellard | fdctrl->dma_en = 1;
|
612 | baca51fa | bellard | DMA_register_channel(dma_chann, &fdctrl_transfer_handler, fdctrl); |
613 | 8977f3c1 | bellard | } else {
|
614 | baca51fa | bellard | fdctrl->dma_en = 0;
|
615 | 8977f3c1 | bellard | } |
616 | baca51fa | bellard | for (i = 0; i < 2; i++) { |
617 | baca51fa | bellard | fd_init(&fdctrl->drives[i], fds[i]); |
618 | caed8802 | bellard | } |
619 | baca51fa | bellard | fdctrl_reset(fdctrl, 0);
|
620 | baca51fa | bellard | fdctrl->state = FD_CTRL_ACTIVE; |
621 | 8977f3c1 | bellard | if (mem_mapped) {
|
622 | 4f431960 | j_mayer | io_mem = cpu_register_io_memory(0, fdctrl_mem_read, fdctrl_mem_write,
|
623 | 4f431960 | j_mayer | fdctrl); |
624 | e80cfcfc | bellard | cpu_register_physical_memory(io_base, 0x08, io_mem);
|
625 | 8977f3c1 | bellard | } else {
|
626 | 5dcb6b91 | blueswir1 | register_ioport_read((uint32_t)io_base + 0x01, 5, 1, &fdctrl_read, |
627 | 5dcb6b91 | blueswir1 | fdctrl); |
628 | 5dcb6b91 | blueswir1 | register_ioport_read((uint32_t)io_base + 0x07, 1, 1, &fdctrl_read, |
629 | 5dcb6b91 | blueswir1 | fdctrl); |
630 | 5dcb6b91 | blueswir1 | register_ioport_write((uint32_t)io_base + 0x01, 5, 1, &fdctrl_write, |
631 | 5dcb6b91 | blueswir1 | fdctrl); |
632 | 5dcb6b91 | blueswir1 | register_ioport_write((uint32_t)io_base + 0x07, 1, 1, &fdctrl_write, |
633 | 5dcb6b91 | blueswir1 | fdctrl); |
634 | 8977f3c1 | bellard | } |
635 | 3ccacc4a | blueswir1 | register_savevm("fdc", io_base, 1, fdc_save, fdc_load, fdctrl); |
636 | 3ccacc4a | blueswir1 | qemu_register_reset(fdctrl_external_reset, fdctrl); |
637 | a541f297 | bellard | for (i = 0; i < 2; i++) { |
638 | baca51fa | bellard | fd_revalidate(&fdctrl->drives[i]); |
639 | 8977f3c1 | bellard | } |
640 | a541f297 | bellard | |
641 | baca51fa | bellard | return fdctrl;
|
642 | caed8802 | bellard | } |
643 | 8977f3c1 | bellard | |
644 | 741402f9 | blueswir1 | fdctrl_t *sun4m_fdctrl_init (qemu_irq irq, target_phys_addr_t io_base, |
645 | 741402f9 | blueswir1 | BlockDriverState **fds) |
646 | 741402f9 | blueswir1 | { |
647 | 741402f9 | blueswir1 | fdctrl_t *fdctrl; |
648 | 741402f9 | blueswir1 | |
649 | 741402f9 | blueswir1 | fdctrl = fdctrl_init(irq, 0, 1, io_base, fds); |
650 | a06e5a3c | blueswir1 | fdctrl->sun4m = 1;
|
651 | 741402f9 | blueswir1 | |
652 | 741402f9 | blueswir1 | return fdctrl;
|
653 | 741402f9 | blueswir1 | } |
654 | 741402f9 | blueswir1 | |
655 | baca51fa | bellard | /* XXX: may change if moved to bdrv */
|
656 | baca51fa | bellard | int fdctrl_get_drive_type(fdctrl_t *fdctrl, int drive_num) |
657 | caed8802 | bellard | { |
658 | baca51fa | bellard | return fdctrl->drives[drive_num].drive;
|
659 | 8977f3c1 | bellard | } |
660 | 8977f3c1 | bellard | |
661 | 8977f3c1 | bellard | /* Change IRQ state */
|
662 | baca51fa | bellard | static void fdctrl_reset_irq (fdctrl_t *fdctrl) |
663 | 8977f3c1 | bellard | { |
664 | ed5fd2cc | bellard | FLOPPY_DPRINTF("Reset interrupt\n");
|
665 | d537cf6c | pbrook | qemu_set_irq(fdctrl->irq, 0);
|
666 | ed5fd2cc | bellard | fdctrl->state &= ~FD_CTRL_INTR; |
667 | 8977f3c1 | bellard | } |
668 | 8977f3c1 | bellard | |
669 | baca51fa | bellard | static void fdctrl_raise_irq (fdctrl_t *fdctrl, uint8_t status) |
670 | 8977f3c1 | bellard | { |
671 | 6f7e9aec | bellard | // Sparc mutation
|
672 | a06e5a3c | blueswir1 | if (fdctrl->sun4m && !fdctrl->dma_en) {
|
673 | 4f431960 | j_mayer | fdctrl->state &= ~FD_CTRL_BUSY; |
674 | 4f431960 | j_mayer | fdctrl->int_status = status; |
675 | 4f431960 | j_mayer | return;
|
676 | 6f7e9aec | bellard | } |
677 | baca51fa | bellard | if (~(fdctrl->state & FD_CTRL_INTR)) {
|
678 | d537cf6c | pbrook | qemu_set_irq(fdctrl->irq, 1);
|
679 | baca51fa | bellard | fdctrl->state |= FD_CTRL_INTR; |
680 | 8977f3c1 | bellard | } |
681 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Set interrupt status to 0x%02x\n", status);
|
682 | baca51fa | bellard | fdctrl->int_status = status; |
683 | 8977f3c1 | bellard | } |
684 | 8977f3c1 | bellard | |
685 | 4b19ec0c | bellard | /* Reset controller */
|
686 | baca51fa | bellard | static void fdctrl_reset (fdctrl_t *fdctrl, int do_irq) |
687 | 8977f3c1 | bellard | { |
688 | 8977f3c1 | bellard | int i;
|
689 | 8977f3c1 | bellard | |
690 | 4b19ec0c | bellard | FLOPPY_DPRINTF("reset controller\n");
|
691 | baca51fa | bellard | fdctrl_reset_irq(fdctrl); |
692 | 4b19ec0c | bellard | /* Initialise controller */
|
693 | baca51fa | bellard | fdctrl->cur_drv = 0;
|
694 | 8977f3c1 | bellard | /* FIFO state */
|
695 | baca51fa | bellard | fdctrl->data_pos = 0;
|
696 | baca51fa | bellard | fdctrl->data_len = 0;
|
697 | baca51fa | bellard | fdctrl->data_state = FD_STATE_CMD; |
698 | baca51fa | bellard | fdctrl->data_dir = FD_DIR_WRITE; |
699 | 8977f3c1 | bellard | for (i = 0; i < MAX_FD; i++) |
700 | baca51fa | bellard | fd_reset(&fdctrl->drives[i]); |
701 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
702 | 8977f3c1 | bellard | if (do_irq)
|
703 | ed5fd2cc | bellard | fdctrl_raise_irq(fdctrl, 0xc0);
|
704 | baca51fa | bellard | } |
705 | baca51fa | bellard | |
706 | baca51fa | bellard | static inline fdrive_t *drv0 (fdctrl_t *fdctrl) |
707 | baca51fa | bellard | { |
708 | baca51fa | bellard | return &fdctrl->drives[fdctrl->bootsel];
|
709 | baca51fa | bellard | } |
710 | baca51fa | bellard | |
711 | baca51fa | bellard | static inline fdrive_t *drv1 (fdctrl_t *fdctrl) |
712 | baca51fa | bellard | { |
713 | baca51fa | bellard | return &fdctrl->drives[1 - fdctrl->bootsel]; |
714 | baca51fa | bellard | } |
715 | baca51fa | bellard | |
716 | baca51fa | bellard | static fdrive_t *get_cur_drv (fdctrl_t *fdctrl)
|
717 | baca51fa | bellard | { |
718 | baca51fa | bellard | return fdctrl->cur_drv == 0 ? drv0(fdctrl) : drv1(fdctrl); |
719 | 8977f3c1 | bellard | } |
720 | 8977f3c1 | bellard | |
721 | 8977f3c1 | bellard | /* Status B register : 0x01 (read-only) */
|
722 | baca51fa | bellard | static uint32_t fdctrl_read_statusB (fdctrl_t *fdctrl)
|
723 | 8977f3c1 | bellard | { |
724 | 8977f3c1 | bellard | FLOPPY_DPRINTF("status register: 0x00\n");
|
725 | 8977f3c1 | bellard | return 0; |
726 | 8977f3c1 | bellard | } |
727 | 8977f3c1 | bellard | |
728 | 8977f3c1 | bellard | /* Digital output register : 0x02 */
|
729 | baca51fa | bellard | static uint32_t fdctrl_read_dor (fdctrl_t *fdctrl)
|
730 | 8977f3c1 | bellard | { |
731 | 8977f3c1 | bellard | uint32_t retval = 0;
|
732 | 8977f3c1 | bellard | |
733 | 8977f3c1 | bellard | /* Drive motors state indicators */
|
734 | baca51fa | bellard | if (drv0(fdctrl)->drflags & FDRIVE_MOTOR_ON)
|
735 | 4f431960 | j_mayer | retval |= 1 << 5; |
736 | baca51fa | bellard | if (drv1(fdctrl)->drflags & FDRIVE_MOTOR_ON)
|
737 | 4f431960 | j_mayer | retval |= 1 << 4; |
738 | 8977f3c1 | bellard | /* DMA enable */
|
739 | baca51fa | bellard | retval |= fdctrl->dma_en << 3;
|
740 | 8977f3c1 | bellard | /* Reset indicator */
|
741 | baca51fa | bellard | retval |= (fdctrl->state & FD_CTRL_RESET) == 0 ? 0x04 : 0; |
742 | 8977f3c1 | bellard | /* Selected drive */
|
743 | baca51fa | bellard | retval |= fdctrl->cur_drv; |
744 | 8977f3c1 | bellard | FLOPPY_DPRINTF("digital output register: 0x%02x\n", retval);
|
745 | 8977f3c1 | bellard | |
746 | 8977f3c1 | bellard | return retval;
|
747 | 8977f3c1 | bellard | } |
748 | 8977f3c1 | bellard | |
749 | baca51fa | bellard | static void fdctrl_write_dor (fdctrl_t *fdctrl, uint32_t value) |
750 | 8977f3c1 | bellard | { |
751 | 8977f3c1 | bellard | /* Reset mode */
|
752 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_RESET) {
|
753 | 8977f3c1 | bellard | if (!(value & 0x04)) { |
754 | 4b19ec0c | bellard | FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
|
755 | 8977f3c1 | bellard | return;
|
756 | 8977f3c1 | bellard | } |
757 | 8977f3c1 | bellard | } |
758 | 8977f3c1 | bellard | FLOPPY_DPRINTF("digital output register set to 0x%02x\n", value);
|
759 | 8977f3c1 | bellard | /* Drive motors state indicators */
|
760 | 8977f3c1 | bellard | if (value & 0x20) |
761 | baca51fa | bellard | fd_start(drv1(fdctrl)); |
762 | 8977f3c1 | bellard | else
|
763 | baca51fa | bellard | fd_stop(drv1(fdctrl)); |
764 | 8977f3c1 | bellard | if (value & 0x10) |
765 | baca51fa | bellard | fd_start(drv0(fdctrl)); |
766 | 8977f3c1 | bellard | else
|
767 | baca51fa | bellard | fd_stop(drv0(fdctrl)); |
768 | 8977f3c1 | bellard | /* DMA enable */
|
769 | 8977f3c1 | bellard | #if 0
|
770 | baca51fa | bellard | if (fdctrl->dma_chann != -1)
|
771 | baca51fa | bellard | fdctrl->dma_en = 1 - ((value >> 3) & 1);
|
772 | 8977f3c1 | bellard | #endif
|
773 | 8977f3c1 | bellard | /* Reset */
|
774 | 8977f3c1 | bellard | if (!(value & 0x04)) { |
775 | baca51fa | bellard | if (!(fdctrl->state & FD_CTRL_RESET)) {
|
776 | 4b19ec0c | bellard | FLOPPY_DPRINTF("controller enter RESET state\n");
|
777 | baca51fa | bellard | fdctrl->state |= FD_CTRL_RESET; |
778 | 8977f3c1 | bellard | } |
779 | 8977f3c1 | bellard | } else {
|
780 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_RESET) {
|
781 | 4b19ec0c | bellard | FLOPPY_DPRINTF("controller out of RESET state\n");
|
782 | fb6cf1d0 | bellard | fdctrl_reset(fdctrl, 1);
|
783 | baca51fa | bellard | fdctrl->state &= ~(FD_CTRL_RESET | FD_CTRL_SLEEP); |
784 | 8977f3c1 | bellard | } |
785 | 8977f3c1 | bellard | } |
786 | 8977f3c1 | bellard | /* Selected drive */
|
787 | baca51fa | bellard | fdctrl->cur_drv = value & 1;
|
788 | 8977f3c1 | bellard | } |
789 | 8977f3c1 | bellard | |
790 | 8977f3c1 | bellard | /* Tape drive register : 0x03 */
|
791 | baca51fa | bellard | static uint32_t fdctrl_read_tape (fdctrl_t *fdctrl)
|
792 | 8977f3c1 | bellard | { |
793 | 8977f3c1 | bellard | uint32_t retval = 0;
|
794 | 8977f3c1 | bellard | |
795 | 8977f3c1 | bellard | /* Disk boot selection indicator */
|
796 | baca51fa | bellard | retval |= fdctrl->bootsel << 2;
|
797 | 8977f3c1 | bellard | /* Tape indicators: never allowed */
|
798 | 8977f3c1 | bellard | FLOPPY_DPRINTF("tape drive register: 0x%02x\n", retval);
|
799 | 8977f3c1 | bellard | |
800 | 8977f3c1 | bellard | return retval;
|
801 | 8977f3c1 | bellard | } |
802 | 8977f3c1 | bellard | |
803 | baca51fa | bellard | static void fdctrl_write_tape (fdctrl_t *fdctrl, uint32_t value) |
804 | 8977f3c1 | bellard | { |
805 | 8977f3c1 | bellard | /* Reset mode */
|
806 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_RESET) {
|
807 | 4b19ec0c | bellard | FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
|
808 | 8977f3c1 | bellard | return;
|
809 | 8977f3c1 | bellard | } |
810 | 8977f3c1 | bellard | FLOPPY_DPRINTF("tape drive register set to 0x%02x\n", value);
|
811 | 8977f3c1 | bellard | /* Disk boot selection indicator */
|
812 | baca51fa | bellard | fdctrl->bootsel = (value >> 2) & 1; |
813 | 8977f3c1 | bellard | /* Tape indicators: never allow */
|
814 | 8977f3c1 | bellard | } |
815 | 8977f3c1 | bellard | |
816 | 8977f3c1 | bellard | /* Main status register : 0x04 (read) */
|
817 | baca51fa | bellard | static uint32_t fdctrl_read_main_status (fdctrl_t *fdctrl)
|
818 | 8977f3c1 | bellard | { |
819 | 8977f3c1 | bellard | uint32_t retval = 0;
|
820 | 8977f3c1 | bellard | |
821 | baca51fa | bellard | fdctrl->state &= ~(FD_CTRL_SLEEP | FD_CTRL_RESET); |
822 | baca51fa | bellard | if (!(fdctrl->state & FD_CTRL_BUSY)) {
|
823 | 8977f3c1 | bellard | /* Data transfer allowed */
|
824 | 8977f3c1 | bellard | retval |= 0x80;
|
825 | 8977f3c1 | bellard | /* Data transfer direction indicator */
|
826 | baca51fa | bellard | if (fdctrl->data_dir == FD_DIR_READ)
|
827 | 8977f3c1 | bellard | retval |= 0x40;
|
828 | 8977f3c1 | bellard | } |
829 | 8977f3c1 | bellard | /* Should handle 0x20 for SPECIFY command */
|
830 | 8977f3c1 | bellard | /* Command busy indicator */
|
831 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA ||
|
832 | baca51fa | bellard | FD_STATE(fdctrl->data_state) == FD_STATE_STATUS) |
833 | 8977f3c1 | bellard | retval |= 0x10;
|
834 | 8977f3c1 | bellard | FLOPPY_DPRINTF("main status register: 0x%02x\n", retval);
|
835 | 8977f3c1 | bellard | |
836 | 8977f3c1 | bellard | return retval;
|
837 | 8977f3c1 | bellard | } |
838 | 8977f3c1 | bellard | |
839 | 8977f3c1 | bellard | /* Data select rate register : 0x04 (write) */
|
840 | baca51fa | bellard | static void fdctrl_write_rate (fdctrl_t *fdctrl, uint32_t value) |
841 | 8977f3c1 | bellard | { |
842 | 8977f3c1 | bellard | /* Reset mode */
|
843 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_RESET) {
|
844 | 4f431960 | j_mayer | FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
|
845 | 4f431960 | j_mayer | return;
|
846 | 4f431960 | j_mayer | } |
847 | 8977f3c1 | bellard | FLOPPY_DPRINTF("select rate register set to 0x%02x\n", value);
|
848 | 8977f3c1 | bellard | /* Reset: autoclear */
|
849 | 8977f3c1 | bellard | if (value & 0x80) { |
850 | baca51fa | bellard | fdctrl->state |= FD_CTRL_RESET; |
851 | baca51fa | bellard | fdctrl_reset(fdctrl, 1);
|
852 | baca51fa | bellard | fdctrl->state &= ~FD_CTRL_RESET; |
853 | 8977f3c1 | bellard | } |
854 | 8977f3c1 | bellard | if (value & 0x40) { |
855 | baca51fa | bellard | fdctrl->state |= FD_CTRL_SLEEP; |
856 | baca51fa | bellard | fdctrl_reset(fdctrl, 1);
|
857 | 8977f3c1 | bellard | } |
858 | 8977f3c1 | bellard | // fdctrl.precomp = (value >> 2) & 0x07;
|
859 | 8977f3c1 | bellard | } |
860 | 8977f3c1 | bellard | |
861 | ea185bbd | bellard | static int fdctrl_media_changed(fdrive_t *drv) |
862 | ea185bbd | bellard | { |
863 | ea185bbd | bellard | int ret;
|
864 | 4f431960 | j_mayer | |
865 | 5fafdf24 | ths | if (!drv->bs)
|
866 | ea185bbd | bellard | return 0; |
867 | ea185bbd | bellard | ret = bdrv_media_changed(drv->bs); |
868 | ea185bbd | bellard | if (ret) {
|
869 | ea185bbd | bellard | fd_revalidate(drv); |
870 | ea185bbd | bellard | } |
871 | ea185bbd | bellard | return ret;
|
872 | ea185bbd | bellard | } |
873 | ea185bbd | bellard | |
874 | 8977f3c1 | bellard | /* Digital input register : 0x07 (read-only) */
|
875 | baca51fa | bellard | static uint32_t fdctrl_read_dir (fdctrl_t *fdctrl)
|
876 | 8977f3c1 | bellard | { |
877 | 8977f3c1 | bellard | uint32_t retval = 0;
|
878 | 8977f3c1 | bellard | |
879 | ea185bbd | bellard | if (fdctrl_media_changed(drv0(fdctrl)) ||
|
880 | 4f431960 | j_mayer | fdctrl_media_changed(drv1(fdctrl))) |
881 | 8977f3c1 | bellard | retval |= 0x80;
|
882 | 8977f3c1 | bellard | if (retval != 0) |
883 | baca51fa | bellard | FLOPPY_DPRINTF("Floppy digital input register: 0x%02x\n", retval);
|
884 | 8977f3c1 | bellard | |
885 | 8977f3c1 | bellard | return retval;
|
886 | 8977f3c1 | bellard | } |
887 | 8977f3c1 | bellard | |
888 | 8977f3c1 | bellard | /* FIFO state control */
|
889 | baca51fa | bellard | static void fdctrl_reset_fifo (fdctrl_t *fdctrl) |
890 | 8977f3c1 | bellard | { |
891 | baca51fa | bellard | fdctrl->data_dir = FD_DIR_WRITE; |
892 | baca51fa | bellard | fdctrl->data_pos = 0;
|
893 | baca51fa | bellard | FD_SET_STATE(fdctrl->data_state, FD_STATE_CMD); |
894 | 8977f3c1 | bellard | } |
895 | 8977f3c1 | bellard | |
896 | 8977f3c1 | bellard | /* Set FIFO status for the host to read */
|
897 | baca51fa | bellard | static void fdctrl_set_fifo (fdctrl_t *fdctrl, int fifo_len, int do_irq) |
898 | 8977f3c1 | bellard | { |
899 | baca51fa | bellard | fdctrl->data_dir = FD_DIR_READ; |
900 | baca51fa | bellard | fdctrl->data_len = fifo_len; |
901 | baca51fa | bellard | fdctrl->data_pos = 0;
|
902 | baca51fa | bellard | FD_SET_STATE(fdctrl->data_state, FD_STATE_STATUS); |
903 | 8977f3c1 | bellard | if (do_irq)
|
904 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x00);
|
905 | 8977f3c1 | bellard | } |
906 | 8977f3c1 | bellard | |
907 | 8977f3c1 | bellard | /* Set an error: unimplemented/unknown command */
|
908 | baca51fa | bellard | static void fdctrl_unimplemented (fdctrl_t *fdctrl) |
909 | 8977f3c1 | bellard | { |
910 | 8977f3c1 | bellard | #if 0
|
911 | baca51fa | bellard | fdrive_t *cur_drv;
|
912 | baca51fa | bellard | |
913 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl);
|
914 | 890fa6be | bellard | fdctrl->fifo[0] = 0x60 | (cur_drv->head << 2) | fdctrl->cur_drv;
|
915 | baca51fa | bellard | fdctrl->fifo[1] = 0x00;
|
916 | baca51fa | bellard | fdctrl->fifo[2] = 0x00;
|
917 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 3, 1);
|
918 | 8977f3c1 | bellard | #else
|
919 | baca51fa | bellard | // fdctrl_reset_fifo(fdctrl);
|
920 | baca51fa | bellard | fdctrl->fifo[0] = 0x80; |
921 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 0); |
922 | 8977f3c1 | bellard | #endif
|
923 | 8977f3c1 | bellard | } |
924 | 8977f3c1 | bellard | |
925 | 8977f3c1 | bellard | /* Callback for transfer end (stop or abort) */
|
926 | baca51fa | bellard | static void fdctrl_stop_transfer (fdctrl_t *fdctrl, uint8_t status0, |
927 | 4f431960 | j_mayer | uint8_t status1, uint8_t status2) |
928 | 8977f3c1 | bellard | { |
929 | baca51fa | bellard | fdrive_t *cur_drv; |
930 | 8977f3c1 | bellard | |
931 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
932 | 8977f3c1 | bellard | FLOPPY_DPRINTF("transfer status: %02x %02x %02x (%02x)\n",
|
933 | 8977f3c1 | bellard | status0, status1, status2, |
934 | 890fa6be | bellard | status0 | (cur_drv->head << 2) | fdctrl->cur_drv);
|
935 | 890fa6be | bellard | fdctrl->fifo[0] = status0 | (cur_drv->head << 2) | fdctrl->cur_drv; |
936 | baca51fa | bellard | fdctrl->fifo[1] = status1;
|
937 | baca51fa | bellard | fdctrl->fifo[2] = status2;
|
938 | baca51fa | bellard | fdctrl->fifo[3] = cur_drv->track;
|
939 | baca51fa | bellard | fdctrl->fifo[4] = cur_drv->head;
|
940 | baca51fa | bellard | fdctrl->fifo[5] = cur_drv->sect;
|
941 | baca51fa | bellard | fdctrl->fifo[6] = FD_SECTOR_SC;
|
942 | baca51fa | bellard | fdctrl->data_dir = FD_DIR_READ; |
943 | ed5fd2cc | bellard | if (fdctrl->state & FD_CTRL_BUSY) {
|
944 | baca51fa | bellard | DMA_release_DREQ(fdctrl->dma_chann); |
945 | ed5fd2cc | bellard | fdctrl->state &= ~FD_CTRL_BUSY; |
946 | ed5fd2cc | bellard | } |
947 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 7, 1); |
948 | 8977f3c1 | bellard | } |
949 | 8977f3c1 | bellard | |
950 | 8977f3c1 | bellard | /* Prepare a data transfer (either DMA or FIFO) */
|
951 | baca51fa | bellard | static void fdctrl_start_transfer (fdctrl_t *fdctrl, int direction) |
952 | 8977f3c1 | bellard | { |
953 | baca51fa | bellard | fdrive_t *cur_drv; |
954 | 8977f3c1 | bellard | uint8_t kh, kt, ks; |
955 | 8977f3c1 | bellard | int did_seek;
|
956 | 8977f3c1 | bellard | |
957 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
958 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
959 | baca51fa | bellard | kt = fdctrl->fifo[2];
|
960 | baca51fa | bellard | kh = fdctrl->fifo[3];
|
961 | baca51fa | bellard | ks = fdctrl->fifo[4];
|
962 | 4b19ec0c | bellard | FLOPPY_DPRINTF("Start transfer at %d %d %02x %02x (%d)\n",
|
963 | baca51fa | bellard | fdctrl->cur_drv, kh, kt, ks, |
964 | 8977f3c1 | bellard | _fd_sector(kh, kt, ks, cur_drv->last_sect)); |
965 | 8977f3c1 | bellard | did_seek = 0;
|
966 | baca51fa | bellard | switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) { |
967 | 8977f3c1 | bellard | case 2: |
968 | 8977f3c1 | bellard | /* sect too big */
|
969 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00); |
970 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
971 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
972 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
973 | 8977f3c1 | bellard | return;
|
974 | 8977f3c1 | bellard | case 3: |
975 | 8977f3c1 | bellard | /* track too big */
|
976 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00); |
977 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
978 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
979 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
980 | 8977f3c1 | bellard | return;
|
981 | 8977f3c1 | bellard | case 4: |
982 | 8977f3c1 | bellard | /* No seek enabled */
|
983 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00); |
984 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
985 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
986 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
987 | 8977f3c1 | bellard | return;
|
988 | 8977f3c1 | bellard | case 1: |
989 | 8977f3c1 | bellard | did_seek = 1;
|
990 | 8977f3c1 | bellard | break;
|
991 | 8977f3c1 | bellard | default:
|
992 | 8977f3c1 | bellard | break;
|
993 | 8977f3c1 | bellard | } |
994 | 8977f3c1 | bellard | /* Set the FIFO state */
|
995 | baca51fa | bellard | fdctrl->data_dir = direction; |
996 | baca51fa | bellard | fdctrl->data_pos = 0;
|
997 | baca51fa | bellard | FD_SET_STATE(fdctrl->data_state, FD_STATE_DATA); /* FIFO ready for data */
|
998 | baca51fa | bellard | if (fdctrl->fifo[0] & 0x80) |
999 | baca51fa | bellard | fdctrl->data_state |= FD_STATE_MULTI; |
1000 | baca51fa | bellard | else
|
1001 | baca51fa | bellard | fdctrl->data_state &= ~FD_STATE_MULTI; |
1002 | 8977f3c1 | bellard | if (did_seek)
|
1003 | baca51fa | bellard | fdctrl->data_state |= FD_STATE_SEEK; |
1004 | baca51fa | bellard | else
|
1005 | baca51fa | bellard | fdctrl->data_state &= ~FD_STATE_SEEK; |
1006 | baca51fa | bellard | if (fdctrl->fifo[5] == 00) { |
1007 | baca51fa | bellard | fdctrl->data_len = fdctrl->fifo[8];
|
1008 | baca51fa | bellard | } else {
|
1009 | 4f431960 | j_mayer | int tmp;
|
1010 | 3bcb80f1 | ths | fdctrl->data_len = 128 << (fdctrl->fifo[5] > 7 ? 7 : fdctrl->fifo[5]); |
1011 | baca51fa | bellard | tmp = (cur_drv->last_sect - ks + 1);
|
1012 | baca51fa | bellard | if (fdctrl->fifo[0] & 0x80) |
1013 | baca51fa | bellard | tmp += cur_drv->last_sect; |
1014 | 4f431960 | j_mayer | fdctrl->data_len *= tmp; |
1015 | baca51fa | bellard | } |
1016 | 890fa6be | bellard | fdctrl->eot = fdctrl->fifo[6];
|
1017 | baca51fa | bellard | if (fdctrl->dma_en) {
|
1018 | 8977f3c1 | bellard | int dma_mode;
|
1019 | 8977f3c1 | bellard | /* DMA transfer are enabled. Check if DMA channel is well programmed */
|
1020 | baca51fa | bellard | dma_mode = DMA_get_channel_mode(fdctrl->dma_chann); |
1021 | 8977f3c1 | bellard | dma_mode = (dma_mode >> 2) & 3; |
1022 | baca51fa | bellard | FLOPPY_DPRINTF("dma_mode=%d direction=%d (%d - %d)\n",
|
1023 | 4f431960 | j_mayer | dma_mode, direction, |
1024 | baca51fa | bellard | (128 << fdctrl->fifo[5]) * |
1025 | 4f431960 | j_mayer | (cur_drv->last_sect - ks + 1), fdctrl->data_len);
|
1026 | 8977f3c1 | bellard | if (((direction == FD_DIR_SCANE || direction == FD_DIR_SCANL ||
|
1027 | 8977f3c1 | bellard | direction == FD_DIR_SCANH) && dma_mode == 0) ||
|
1028 | 8977f3c1 | bellard | (direction == FD_DIR_WRITE && dma_mode == 2) ||
|
1029 | 8977f3c1 | bellard | (direction == FD_DIR_READ && dma_mode == 1)) {
|
1030 | 8977f3c1 | bellard | /* No access is allowed until DMA transfer has completed */
|
1031 | baca51fa | bellard | fdctrl->state |= FD_CTRL_BUSY; |
1032 | 4b19ec0c | bellard | /* Now, we just have to wait for the DMA controller to
|
1033 | 8977f3c1 | bellard | * recall us...
|
1034 | 8977f3c1 | bellard | */
|
1035 | baca51fa | bellard | DMA_hold_DREQ(fdctrl->dma_chann); |
1036 | baca51fa | bellard | DMA_schedule(fdctrl->dma_chann); |
1037 | 8977f3c1 | bellard | return;
|
1038 | baca51fa | bellard | } else {
|
1039 | 4f431960 | j_mayer | FLOPPY_ERROR("dma_mode=%d direction=%d\n", dma_mode, direction);
|
1040 | 8977f3c1 | bellard | } |
1041 | 8977f3c1 | bellard | } |
1042 | 8977f3c1 | bellard | FLOPPY_DPRINTF("start non-DMA transfer\n");
|
1043 | 8977f3c1 | bellard | /* IO based transfer: calculate len */
|
1044 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x00);
|
1045 | 8977f3c1 | bellard | |
1046 | 8977f3c1 | bellard | return;
|
1047 | 8977f3c1 | bellard | } |
1048 | 8977f3c1 | bellard | |
1049 | 8977f3c1 | bellard | /* Prepare a transfer of deleted data */
|
1050 | baca51fa | bellard | static void fdctrl_start_transfer_del (fdctrl_t *fdctrl, int direction) |
1051 | 8977f3c1 | bellard | { |
1052 | 8977f3c1 | bellard | /* We don't handle deleted data,
|
1053 | 8977f3c1 | bellard | * so we don't return *ANYTHING*
|
1054 | 8977f3c1 | bellard | */
|
1055 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00); |
1056 | 8977f3c1 | bellard | } |
1057 | 8977f3c1 | bellard | |
1058 | 8977f3c1 | bellard | /* handlers for DMA transfers */
|
1059 | 85571bc7 | bellard | static int fdctrl_transfer_handler (void *opaque, int nchan, |
1060 | 85571bc7 | bellard | int dma_pos, int dma_len) |
1061 | 8977f3c1 | bellard | { |
1062 | baca51fa | bellard | fdctrl_t *fdctrl; |
1063 | baca51fa | bellard | fdrive_t *cur_drv; |
1064 | baca51fa | bellard | int len, start_pos, rel_pos;
|
1065 | 8977f3c1 | bellard | uint8_t status0 = 0x00, status1 = 0x00, status2 = 0x00; |
1066 | 8977f3c1 | bellard | |
1067 | baca51fa | bellard | fdctrl = opaque; |
1068 | baca51fa | bellard | if (!(fdctrl->state & FD_CTRL_BUSY)) {
|
1069 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Not in DMA transfer mode !\n");
|
1070 | 8977f3c1 | bellard | return 0; |
1071 | 8977f3c1 | bellard | } |
1072 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1073 | baca51fa | bellard | if (fdctrl->data_dir == FD_DIR_SCANE || fdctrl->data_dir == FD_DIR_SCANL ||
|
1074 | baca51fa | bellard | fdctrl->data_dir == FD_DIR_SCANH) |
1075 | 8977f3c1 | bellard | status2 = 0x04;
|
1076 | 85571bc7 | bellard | if (dma_len > fdctrl->data_len)
|
1077 | 85571bc7 | bellard | dma_len = fdctrl->data_len; |
1078 | 890fa6be | bellard | if (cur_drv->bs == NULL) { |
1079 | 4f431960 | j_mayer | if (fdctrl->data_dir == FD_DIR_WRITE)
|
1080 | 4f431960 | j_mayer | fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00); |
1081 | 4f431960 | j_mayer | else
|
1082 | 4f431960 | j_mayer | fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00); |
1083 | 4f431960 | j_mayer | len = 0;
|
1084 | 890fa6be | bellard | goto transfer_error;
|
1085 | 890fa6be | bellard | } |
1086 | baca51fa | bellard | rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; |
1087 | 85571bc7 | bellard | for (start_pos = fdctrl->data_pos; fdctrl->data_pos < dma_len;) {
|
1088 | 85571bc7 | bellard | len = dma_len - fdctrl->data_pos; |
1089 | baca51fa | bellard | if (len + rel_pos > FD_SECTOR_LEN)
|
1090 | baca51fa | bellard | len = FD_SECTOR_LEN - rel_pos; |
1091 | 6f7e9aec | bellard | FLOPPY_DPRINTF("copy %d bytes (%d %d %d) %d pos %d %02x "
|
1092 | 6f7e9aec | bellard | "(%d-0x%08x 0x%08x)\n", len, dma_len, fdctrl->data_pos,
|
1093 | baca51fa | bellard | fdctrl->data_len, fdctrl->cur_drv, cur_drv->head, |
1094 | baca51fa | bellard | cur_drv->track, cur_drv->sect, fd_sector(cur_drv), |
1095 | 6f7e9aec | bellard | fd_sector(cur_drv) * 512);
|
1096 | baca51fa | bellard | if (fdctrl->data_dir != FD_DIR_WRITE ||
|
1097 | 4f431960 | j_mayer | len < FD_SECTOR_LEN || rel_pos != 0) {
|
1098 | baca51fa | bellard | /* READ & SCAN commands and realign to a sector for WRITE */
|
1099 | baca51fa | bellard | if (bdrv_read(cur_drv->bs, fd_sector(cur_drv),
|
1100 | 4f431960 | j_mayer | fdctrl->fifo, 1) < 0) { |
1101 | 8977f3c1 | bellard | FLOPPY_DPRINTF("Floppy: error getting sector %d\n",
|
1102 | 8977f3c1 | bellard | fd_sector(cur_drv)); |
1103 | 8977f3c1 | bellard | /* Sure, image size is too small... */
|
1104 | baca51fa | bellard | memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
|
1105 | 8977f3c1 | bellard | } |
1106 | 890fa6be | bellard | } |
1107 | 4f431960 | j_mayer | switch (fdctrl->data_dir) {
|
1108 | 4f431960 | j_mayer | case FD_DIR_READ:
|
1109 | 4f431960 | j_mayer | /* READ commands */
|
1110 | 85571bc7 | bellard | DMA_write_memory (nchan, fdctrl->fifo + rel_pos, |
1111 | 85571bc7 | bellard | fdctrl->data_pos, len); |
1112 | 4f431960 | j_mayer | break;
|
1113 | 4f431960 | j_mayer | case FD_DIR_WRITE:
|
1114 | baca51fa | bellard | /* WRITE commands */
|
1115 | 85571bc7 | bellard | DMA_read_memory (nchan, fdctrl->fifo + rel_pos, |
1116 | 85571bc7 | bellard | fdctrl->data_pos, len); |
1117 | baca51fa | bellard | if (bdrv_write(cur_drv->bs, fd_sector(cur_drv),
|
1118 | 4f431960 | j_mayer | fdctrl->fifo, 1) < 0) { |
1119 | baca51fa | bellard | FLOPPY_ERROR("writting sector %d\n", fd_sector(cur_drv));
|
1120 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00); |
1121 | baca51fa | bellard | goto transfer_error;
|
1122 | 890fa6be | bellard | } |
1123 | 4f431960 | j_mayer | break;
|
1124 | 4f431960 | j_mayer | default:
|
1125 | 4f431960 | j_mayer | /* SCAN commands */
|
1126 | baca51fa | bellard | { |
1127 | 4f431960 | j_mayer | uint8_t tmpbuf[FD_SECTOR_LEN]; |
1128 | baca51fa | bellard | int ret;
|
1129 | 85571bc7 | bellard | DMA_read_memory (nchan, tmpbuf, fdctrl->data_pos, len); |
1130 | baca51fa | bellard | ret = memcmp(tmpbuf, fdctrl->fifo + rel_pos, len); |
1131 | 8977f3c1 | bellard | if (ret == 0) { |
1132 | 8977f3c1 | bellard | status2 = 0x08;
|
1133 | 8977f3c1 | bellard | goto end_transfer;
|
1134 | 8977f3c1 | bellard | } |
1135 | baca51fa | bellard | if ((ret < 0 && fdctrl->data_dir == FD_DIR_SCANL) || |
1136 | baca51fa | bellard | (ret > 0 && fdctrl->data_dir == FD_DIR_SCANH)) {
|
1137 | 8977f3c1 | bellard | status2 = 0x00;
|
1138 | 8977f3c1 | bellard | goto end_transfer;
|
1139 | 8977f3c1 | bellard | } |
1140 | 8977f3c1 | bellard | } |
1141 | 4f431960 | j_mayer | break;
|
1142 | 8977f3c1 | bellard | } |
1143 | 4f431960 | j_mayer | fdctrl->data_pos += len; |
1144 | 4f431960 | j_mayer | rel_pos = fdctrl->data_pos % FD_SECTOR_LEN; |
1145 | baca51fa | bellard | if (rel_pos == 0) { |
1146 | 8977f3c1 | bellard | /* Seek to next sector */
|
1147 | 4f431960 | j_mayer | FLOPPY_DPRINTF("seek to next sector (%d %02x %02x => %d) (%d)\n",
|
1148 | 4f431960 | j_mayer | cur_drv->head, cur_drv->track, cur_drv->sect, |
1149 | 4f431960 | j_mayer | fd_sector(cur_drv), |
1150 | 4f431960 | j_mayer | fdctrl->data_pos - len); |
1151 | 890fa6be | bellard | /* XXX: cur_drv->sect >= cur_drv->last_sect should be an
|
1152 | 890fa6be | bellard | error in fact */
|
1153 | 890fa6be | bellard | if (cur_drv->sect >= cur_drv->last_sect ||
|
1154 | 890fa6be | bellard | cur_drv->sect == fdctrl->eot) { |
1155 | 4f431960 | j_mayer | cur_drv->sect = 1;
|
1156 | 4f431960 | j_mayer | if (FD_MULTI_TRACK(fdctrl->data_state)) {
|
1157 | 4f431960 | j_mayer | if (cur_drv->head == 0 && |
1158 | 4f431960 | j_mayer | (cur_drv->flags & FDISK_DBL_SIDES) != 0) {
|
1159 | 890fa6be | bellard | cur_drv->head = 1;
|
1160 | 890fa6be | bellard | } else {
|
1161 | 890fa6be | bellard | cur_drv->head = 0;
|
1162 | 4f431960 | j_mayer | cur_drv->track++; |
1163 | 4f431960 | j_mayer | if ((cur_drv->flags & FDISK_DBL_SIDES) == 0) |
1164 | 4f431960 | j_mayer | break;
|
1165 | 890fa6be | bellard | } |
1166 | 890fa6be | bellard | } else {
|
1167 | 890fa6be | bellard | cur_drv->track++; |
1168 | 890fa6be | bellard | break;
|
1169 | 8977f3c1 | bellard | } |
1170 | 4f431960 | j_mayer | FLOPPY_DPRINTF("seek to next track (%d %02x %02x => %d)\n",
|
1171 | 4f431960 | j_mayer | cur_drv->head, cur_drv->track, |
1172 | 4f431960 | j_mayer | cur_drv->sect, fd_sector(cur_drv)); |
1173 | 890fa6be | bellard | } else {
|
1174 | 890fa6be | bellard | cur_drv->sect++; |
1175 | 8977f3c1 | bellard | } |
1176 | 8977f3c1 | bellard | } |
1177 | 8977f3c1 | bellard | } |
1178 | 4f431960 | j_mayer | end_transfer:
|
1179 | baca51fa | bellard | len = fdctrl->data_pos - start_pos; |
1180 | baca51fa | bellard | FLOPPY_DPRINTF("end transfer %d %d %d\n",
|
1181 | 4f431960 | j_mayer | fdctrl->data_pos, len, fdctrl->data_len); |
1182 | baca51fa | bellard | if (fdctrl->data_dir == FD_DIR_SCANE ||
|
1183 | baca51fa | bellard | fdctrl->data_dir == FD_DIR_SCANL || |
1184 | baca51fa | bellard | fdctrl->data_dir == FD_DIR_SCANH) |
1185 | 8977f3c1 | bellard | status2 = 0x08;
|
1186 | baca51fa | bellard | if (FD_DID_SEEK(fdctrl->data_state))
|
1187 | 8977f3c1 | bellard | status0 |= 0x20;
|
1188 | baca51fa | bellard | fdctrl->data_len -= len; |
1189 | baca51fa | bellard | // if (fdctrl->data_len == 0)
|
1190 | 890fa6be | bellard | fdctrl_stop_transfer(fdctrl, status0, status1, status2); |
1191 | 4f431960 | j_mayer | transfer_error:
|
1192 | 8977f3c1 | bellard | |
1193 | baca51fa | bellard | return len;
|
1194 | 8977f3c1 | bellard | } |
1195 | 8977f3c1 | bellard | |
1196 | 8977f3c1 | bellard | /* Data register : 0x05 */
|
1197 | baca51fa | bellard | static uint32_t fdctrl_read_data (fdctrl_t *fdctrl)
|
1198 | 8977f3c1 | bellard | { |
1199 | baca51fa | bellard | fdrive_t *cur_drv; |
1200 | 8977f3c1 | bellard | uint32_t retval = 0;
|
1201 | 8977f3c1 | bellard | int pos, len;
|
1202 | 8977f3c1 | bellard | |
1203 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1204 | baca51fa | bellard | fdctrl->state &= ~FD_CTRL_SLEEP; |
1205 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_CMD) {
|
1206 | 8977f3c1 | bellard | FLOPPY_ERROR("can't read data in CMD state\n");
|
1207 | 8977f3c1 | bellard | return 0; |
1208 | 8977f3c1 | bellard | } |
1209 | baca51fa | bellard | pos = fdctrl->data_pos; |
1210 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
|
1211 | 8977f3c1 | bellard | pos %= FD_SECTOR_LEN; |
1212 | 8977f3c1 | bellard | if (pos == 0) { |
1213 | baca51fa | bellard | len = fdctrl->data_len - fdctrl->data_pos; |
1214 | 8977f3c1 | bellard | if (len > FD_SECTOR_LEN)
|
1215 | 8977f3c1 | bellard | len = FD_SECTOR_LEN; |
1216 | d6c1a327 | j_mayer | bdrv_read(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1);
|
1217 | 8977f3c1 | bellard | } |
1218 | 8977f3c1 | bellard | } |
1219 | baca51fa | bellard | retval = fdctrl->fifo[pos]; |
1220 | baca51fa | bellard | if (++fdctrl->data_pos == fdctrl->data_len) {
|
1221 | baca51fa | bellard | fdctrl->data_pos = 0;
|
1222 | 890fa6be | bellard | /* Switch from transfer mode to status mode
|
1223 | 8977f3c1 | bellard | * then from status mode to command mode
|
1224 | 8977f3c1 | bellard | */
|
1225 | ed5fd2cc | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
|
1226 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00); |
1227 | ed5fd2cc | bellard | } else {
|
1228 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1229 | ed5fd2cc | bellard | fdctrl_reset_irq(fdctrl); |
1230 | ed5fd2cc | bellard | } |
1231 | 8977f3c1 | bellard | } |
1232 | 8977f3c1 | bellard | FLOPPY_DPRINTF("data register: 0x%02x\n", retval);
|
1233 | 8977f3c1 | bellard | |
1234 | 8977f3c1 | bellard | return retval;
|
1235 | 8977f3c1 | bellard | } |
1236 | 8977f3c1 | bellard | |
1237 | baca51fa | bellard | static void fdctrl_format_sector (fdctrl_t *fdctrl) |
1238 | 8977f3c1 | bellard | { |
1239 | baca51fa | bellard | fdrive_t *cur_drv; |
1240 | baca51fa | bellard | uint8_t kh, kt, ks; |
1241 | baca51fa | bellard | int did_seek;
|
1242 | 8977f3c1 | bellard | |
1243 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1244 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1245 | baca51fa | bellard | kt = fdctrl->fifo[6];
|
1246 | baca51fa | bellard | kh = fdctrl->fifo[7];
|
1247 | baca51fa | bellard | ks = fdctrl->fifo[8];
|
1248 | baca51fa | bellard | FLOPPY_DPRINTF("format sector at %d %d %02x %02x (%d)\n",
|
1249 | baca51fa | bellard | fdctrl->cur_drv, kh, kt, ks, |
1250 | baca51fa | bellard | _fd_sector(kh, kt, ks, cur_drv->last_sect)); |
1251 | baca51fa | bellard | did_seek = 0;
|
1252 | baca51fa | bellard | switch (fd_seek(cur_drv, kh, kt, ks, fdctrl->config & 0x40)) { |
1253 | baca51fa | bellard | case 2: |
1254 | baca51fa | bellard | /* sect too big */
|
1255 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00); |
1256 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
1257 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
1258 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
1259 | baca51fa | bellard | return;
|
1260 | baca51fa | bellard | case 3: |
1261 | baca51fa | bellard | /* track too big */
|
1262 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x80, 0x00); |
1263 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
1264 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
1265 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
1266 | baca51fa | bellard | return;
|
1267 | baca51fa | bellard | case 4: |
1268 | baca51fa | bellard | /* No seek enabled */
|
1269 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x40, 0x00, 0x00); |
1270 | baca51fa | bellard | fdctrl->fifo[3] = kt;
|
1271 | baca51fa | bellard | fdctrl->fifo[4] = kh;
|
1272 | baca51fa | bellard | fdctrl->fifo[5] = ks;
|
1273 | baca51fa | bellard | return;
|
1274 | baca51fa | bellard | case 1: |
1275 | baca51fa | bellard | did_seek = 1;
|
1276 | baca51fa | bellard | fdctrl->data_state |= FD_STATE_SEEK; |
1277 | baca51fa | bellard | break;
|
1278 | baca51fa | bellard | default:
|
1279 | baca51fa | bellard | break;
|
1280 | baca51fa | bellard | } |
1281 | baca51fa | bellard | memset(fdctrl->fifo, 0, FD_SECTOR_LEN);
|
1282 | baca51fa | bellard | if (cur_drv->bs == NULL || |
1283 | baca51fa | bellard | bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1) < 0) { |
1284 | 37a4c539 | ths | FLOPPY_ERROR("formatting sector %d\n", fd_sector(cur_drv));
|
1285 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x60, 0x00, 0x00); |
1286 | baca51fa | bellard | } else {
|
1287 | 4f431960 | j_mayer | if (cur_drv->sect == cur_drv->last_sect) {
|
1288 | 4f431960 | j_mayer | fdctrl->data_state &= ~FD_STATE_FORMAT; |
1289 | 4f431960 | j_mayer | /* Last sector done */
|
1290 | 4f431960 | j_mayer | if (FD_DID_SEEK(fdctrl->data_state))
|
1291 | 4f431960 | j_mayer | fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00); |
1292 | 4f431960 | j_mayer | else
|
1293 | 4f431960 | j_mayer | fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); |
1294 | 4f431960 | j_mayer | } else {
|
1295 | 4f431960 | j_mayer | /* More to do */
|
1296 | 4f431960 | j_mayer | fdctrl->data_pos = 0;
|
1297 | 4f431960 | j_mayer | fdctrl->data_len = 4;
|
1298 | 4f431960 | j_mayer | } |
1299 | baca51fa | bellard | } |
1300 | baca51fa | bellard | } |
1301 | baca51fa | bellard | |
1302 | baca51fa | bellard | static void fdctrl_write_data (fdctrl_t *fdctrl, uint32_t value) |
1303 | baca51fa | bellard | { |
1304 | baca51fa | bellard | fdrive_t *cur_drv; |
1305 | baca51fa | bellard | |
1306 | baca51fa | bellard | cur_drv = get_cur_drv(fdctrl); |
1307 | 8977f3c1 | bellard | /* Reset mode */
|
1308 | baca51fa | bellard | if (fdctrl->state & FD_CTRL_RESET) {
|
1309 | 4b19ec0c | bellard | FLOPPY_DPRINTF("Floppy controller in RESET state !\n");
|
1310 | 8977f3c1 | bellard | return;
|
1311 | 8977f3c1 | bellard | } |
1312 | baca51fa | bellard | fdctrl->state &= ~FD_CTRL_SLEEP; |
1313 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_STATUS) {
|
1314 | 8977f3c1 | bellard | FLOPPY_ERROR("can't write data in status mode\n");
|
1315 | 8977f3c1 | bellard | return;
|
1316 | 8977f3c1 | bellard | } |
1317 | 8977f3c1 | bellard | /* Is it write command time ? */
|
1318 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA) {
|
1319 | 8977f3c1 | bellard | /* FIFO data write */
|
1320 | baca51fa | bellard | fdctrl->fifo[fdctrl->data_pos++] = value; |
1321 | baca51fa | bellard | if (fdctrl->data_pos % FD_SECTOR_LEN == (FD_SECTOR_LEN - 1) || |
1322 | baca51fa | bellard | fdctrl->data_pos == fdctrl->data_len) { |
1323 | d6c1a327 | j_mayer | bdrv_write(cur_drv->bs, fd_sector(cur_drv), fdctrl->fifo, 1);
|
1324 | 8977f3c1 | bellard | } |
1325 | 890fa6be | bellard | /* Switch from transfer mode to status mode
|
1326 | 8977f3c1 | bellard | * then from status mode to command mode
|
1327 | 8977f3c1 | bellard | */
|
1328 | baca51fa | bellard | if (FD_STATE(fdctrl->data_state) == FD_STATE_DATA)
|
1329 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00); |
1330 | 8977f3c1 | bellard | return;
|
1331 | 8977f3c1 | bellard | } |
1332 | baca51fa | bellard | if (fdctrl->data_pos == 0) { |
1333 | 8977f3c1 | bellard | /* Command */
|
1334 | 8977f3c1 | bellard | switch (value & 0x5F) { |
1335 | 8977f3c1 | bellard | case 0x46: |
1336 | 8977f3c1 | bellard | /* READ variants */
|
1337 | 8977f3c1 | bellard | FLOPPY_DPRINTF("READ command\n");
|
1338 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1339 | baca51fa | bellard | fdctrl->data_len = 9;
|
1340 | 8977f3c1 | bellard | goto enqueue;
|
1341 | 8977f3c1 | bellard | case 0x4C: |
1342 | 8977f3c1 | bellard | /* READ_DELETED variants */
|
1343 | 8977f3c1 | bellard | FLOPPY_DPRINTF("READ_DELETED command\n");
|
1344 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1345 | baca51fa | bellard | fdctrl->data_len = 9;
|
1346 | 8977f3c1 | bellard | goto enqueue;
|
1347 | 8977f3c1 | bellard | case 0x50: |
1348 | 8977f3c1 | bellard | /* SCAN_EQUAL variants */
|
1349 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SCAN_EQUAL command\n");
|
1350 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1351 | baca51fa | bellard | fdctrl->data_len = 9;
|
1352 | 8977f3c1 | bellard | goto enqueue;
|
1353 | 8977f3c1 | bellard | case 0x56: |
1354 | 8977f3c1 | bellard | /* VERIFY variants */
|
1355 | 8977f3c1 | bellard | FLOPPY_DPRINTF("VERIFY command\n");
|
1356 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1357 | baca51fa | bellard | fdctrl->data_len = 9;
|
1358 | 8977f3c1 | bellard | goto enqueue;
|
1359 | 8977f3c1 | bellard | case 0x59: |
1360 | 8977f3c1 | bellard | /* SCAN_LOW_OR_EQUAL variants */
|
1361 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SCAN_LOW_OR_EQUAL command\n");
|
1362 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1363 | baca51fa | bellard | fdctrl->data_len = 9;
|
1364 | 8977f3c1 | bellard | goto enqueue;
|
1365 | 8977f3c1 | bellard | case 0x5D: |
1366 | 8977f3c1 | bellard | /* SCAN_HIGH_OR_EQUAL variants */
|
1367 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SCAN_HIGH_OR_EQUAL command\n");
|
1368 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1369 | baca51fa | bellard | fdctrl->data_len = 9;
|
1370 | 8977f3c1 | bellard | goto enqueue;
|
1371 | 8977f3c1 | bellard | default:
|
1372 | 8977f3c1 | bellard | break;
|
1373 | 8977f3c1 | bellard | } |
1374 | 8977f3c1 | bellard | switch (value & 0x7F) { |
1375 | 8977f3c1 | bellard | case 0x45: |
1376 | 8977f3c1 | bellard | /* WRITE variants */
|
1377 | 8977f3c1 | bellard | FLOPPY_DPRINTF("WRITE command\n");
|
1378 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1379 | baca51fa | bellard | fdctrl->data_len = 9;
|
1380 | 8977f3c1 | bellard | goto enqueue;
|
1381 | 8977f3c1 | bellard | case 0x49: |
1382 | 8977f3c1 | bellard | /* WRITE_DELETED variants */
|
1383 | 8977f3c1 | bellard | FLOPPY_DPRINTF("WRITE_DELETED command\n");
|
1384 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1385 | baca51fa | bellard | fdctrl->data_len = 9;
|
1386 | 8977f3c1 | bellard | goto enqueue;
|
1387 | 8977f3c1 | bellard | default:
|
1388 | 8977f3c1 | bellard | break;
|
1389 | 8977f3c1 | bellard | } |
1390 | 8977f3c1 | bellard | switch (value) {
|
1391 | 8977f3c1 | bellard | case 0x03: |
1392 | 8977f3c1 | bellard | /* SPECIFY */
|
1393 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SPECIFY command\n");
|
1394 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1395 | baca51fa | bellard | fdctrl->data_len = 3;
|
1396 | 8977f3c1 | bellard | goto enqueue;
|
1397 | 8977f3c1 | bellard | case 0x04: |
1398 | 8977f3c1 | bellard | /* SENSE_DRIVE_STATUS */
|
1399 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SENSE_DRIVE_STATUS command\n");
|
1400 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1401 | baca51fa | bellard | fdctrl->data_len = 2;
|
1402 | 8977f3c1 | bellard | goto enqueue;
|
1403 | 8977f3c1 | bellard | case 0x07: |
1404 | 8977f3c1 | bellard | /* RECALIBRATE */
|
1405 | 8977f3c1 | bellard | FLOPPY_DPRINTF("RECALIBRATE command\n");
|
1406 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1407 | baca51fa | bellard | fdctrl->data_len = 2;
|
1408 | 8977f3c1 | bellard | goto enqueue;
|
1409 | 8977f3c1 | bellard | case 0x08: |
1410 | 8977f3c1 | bellard | /* SENSE_INTERRUPT_STATUS */
|
1411 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SENSE_INTERRUPT_STATUS command (%02x)\n",
|
1412 | baca51fa | bellard | fdctrl->int_status); |
1413 | 8977f3c1 | bellard | /* No parameters cmd: returns status if no interrupt */
|
1414 | 953569d2 | bellard | #if 0
|
1415 | baca51fa | bellard | fdctrl->fifo[0] =
|
1416 | baca51fa | bellard | fdctrl->int_status | (cur_drv->head << 2) | fdctrl->cur_drv;
|
1417 | 953569d2 | bellard | #else
|
1418 | 953569d2 | bellard | /* XXX: int_status handling is broken for read/write
|
1419 | 953569d2 | bellard | commands, so we do this hack. It should be suppressed
|
1420 | 953569d2 | bellard | ASAP */
|
1421 | 953569d2 | bellard | fdctrl->fifo[0] =
|
1422 | 953569d2 | bellard | 0x20 | (cur_drv->head << 2) | fdctrl->cur_drv; |
1423 | 953569d2 | bellard | #endif
|
1424 | baca51fa | bellard | fdctrl->fifo[1] = cur_drv->track;
|
1425 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 2, 0); |
1426 | 4f431960 | j_mayer | fdctrl_reset_irq(fdctrl); |
1427 | 4f431960 | j_mayer | fdctrl->int_status = 0xC0;
|
1428 | 8977f3c1 | bellard | return;
|
1429 | 8977f3c1 | bellard | case 0x0E: |
1430 | 8977f3c1 | bellard | /* DUMPREG */
|
1431 | 8977f3c1 | bellard | FLOPPY_DPRINTF("DUMPREG command\n");
|
1432 | 8977f3c1 | bellard | /* Drives position */
|
1433 | baca51fa | bellard | fdctrl->fifo[0] = drv0(fdctrl)->track;
|
1434 | baca51fa | bellard | fdctrl->fifo[1] = drv1(fdctrl)->track;
|
1435 | baca51fa | bellard | fdctrl->fifo[2] = 0; |
1436 | baca51fa | bellard | fdctrl->fifo[3] = 0; |
1437 | 8977f3c1 | bellard | /* timers */
|
1438 | baca51fa | bellard | fdctrl->fifo[4] = fdctrl->timer0;
|
1439 | baca51fa | bellard | fdctrl->fifo[5] = (fdctrl->timer1 << 1) | fdctrl->dma_en; |
1440 | baca51fa | bellard | fdctrl->fifo[6] = cur_drv->last_sect;
|
1441 | baca51fa | bellard | fdctrl->fifo[7] = (fdctrl->lock << 7) | |
1442 | 4f431960 | j_mayer | (cur_drv->perpendicular << 2);
|
1443 | baca51fa | bellard | fdctrl->fifo[8] = fdctrl->config;
|
1444 | baca51fa | bellard | fdctrl->fifo[9] = fdctrl->precomp_trk;
|
1445 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 10, 0); |
1446 | 8977f3c1 | bellard | return;
|
1447 | 8977f3c1 | bellard | case 0x0F: |
1448 | 8977f3c1 | bellard | /* SEEK */
|
1449 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SEEK command\n");
|
1450 | 8977f3c1 | bellard | /* 2 parameters cmd */
|
1451 | baca51fa | bellard | fdctrl->data_len = 3;
|
1452 | 8977f3c1 | bellard | goto enqueue;
|
1453 | 8977f3c1 | bellard | case 0x10: |
1454 | 8977f3c1 | bellard | /* VERSION */
|
1455 | 8977f3c1 | bellard | FLOPPY_DPRINTF("VERSION command\n");
|
1456 | 8977f3c1 | bellard | /* No parameters cmd */
|
1457 | 4b19ec0c | bellard | /* Controller's version */
|
1458 | baca51fa | bellard | fdctrl->fifo[0] = fdctrl->version;
|
1459 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 1); |
1460 | 8977f3c1 | bellard | return;
|
1461 | 8977f3c1 | bellard | case 0x12: |
1462 | 8977f3c1 | bellard | /* PERPENDICULAR_MODE */
|
1463 | 8977f3c1 | bellard | FLOPPY_DPRINTF("PERPENDICULAR_MODE command\n");
|
1464 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1465 | baca51fa | bellard | fdctrl->data_len = 2;
|
1466 | 8977f3c1 | bellard | goto enqueue;
|
1467 | 8977f3c1 | bellard | case 0x13: |
1468 | 8977f3c1 | bellard | /* CONFIGURE */
|
1469 | 8977f3c1 | bellard | FLOPPY_DPRINTF("CONFIGURE command\n");
|
1470 | 8977f3c1 | bellard | /* 3 parameters cmd */
|
1471 | baca51fa | bellard | fdctrl->data_len = 4;
|
1472 | 8977f3c1 | bellard | goto enqueue;
|
1473 | 8977f3c1 | bellard | case 0x14: |
1474 | 8977f3c1 | bellard | /* UNLOCK */
|
1475 | 8977f3c1 | bellard | FLOPPY_DPRINTF("UNLOCK command\n");
|
1476 | 8977f3c1 | bellard | /* No parameters cmd */
|
1477 | baca51fa | bellard | fdctrl->lock = 0;
|
1478 | baca51fa | bellard | fdctrl->fifo[0] = 0; |
1479 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 0); |
1480 | 8977f3c1 | bellard | return;
|
1481 | 8977f3c1 | bellard | case 0x17: |
1482 | 8977f3c1 | bellard | /* POWERDOWN_MODE */
|
1483 | 8977f3c1 | bellard | FLOPPY_DPRINTF("POWERDOWN_MODE command\n");
|
1484 | 8977f3c1 | bellard | /* 2 parameters cmd */
|
1485 | baca51fa | bellard | fdctrl->data_len = 3;
|
1486 | 8977f3c1 | bellard | goto enqueue;
|
1487 | 8977f3c1 | bellard | case 0x18: |
1488 | 8977f3c1 | bellard | /* PART_ID */
|
1489 | 8977f3c1 | bellard | FLOPPY_DPRINTF("PART_ID command\n");
|
1490 | 8977f3c1 | bellard | /* No parameters cmd */
|
1491 | baca51fa | bellard | fdctrl->fifo[0] = 0x41; /* Stepping 1 */ |
1492 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 0); |
1493 | 8977f3c1 | bellard | return;
|
1494 | 8977f3c1 | bellard | case 0x2C: |
1495 | 8977f3c1 | bellard | /* SAVE */
|
1496 | 8977f3c1 | bellard | FLOPPY_DPRINTF("SAVE command\n");
|
1497 | 8977f3c1 | bellard | /* No parameters cmd */
|
1498 | baca51fa | bellard | fdctrl->fifo[0] = 0; |
1499 | baca51fa | bellard | fdctrl->fifo[1] = 0; |
1500 | 8977f3c1 | bellard | /* Drives position */
|
1501 | baca51fa | bellard | fdctrl->fifo[2] = drv0(fdctrl)->track;
|
1502 | baca51fa | bellard | fdctrl->fifo[3] = drv1(fdctrl)->track;
|
1503 | baca51fa | bellard | fdctrl->fifo[4] = 0; |
1504 | baca51fa | bellard | fdctrl->fifo[5] = 0; |
1505 | 8977f3c1 | bellard | /* timers */
|
1506 | baca51fa | bellard | fdctrl->fifo[6] = fdctrl->timer0;
|
1507 | baca51fa | bellard | fdctrl->fifo[7] = fdctrl->timer1;
|
1508 | baca51fa | bellard | fdctrl->fifo[8] = cur_drv->last_sect;
|
1509 | baca51fa | bellard | fdctrl->fifo[9] = (fdctrl->lock << 7) | |
1510 | 4f431960 | j_mayer | (cur_drv->perpendicular << 2);
|
1511 | baca51fa | bellard | fdctrl->fifo[10] = fdctrl->config;
|
1512 | baca51fa | bellard | fdctrl->fifo[11] = fdctrl->precomp_trk;
|
1513 | baca51fa | bellard | fdctrl->fifo[12] = fdctrl->pwrd;
|
1514 | baca51fa | bellard | fdctrl->fifo[13] = 0; |
1515 | baca51fa | bellard | fdctrl->fifo[14] = 0; |
1516 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 15, 1); |
1517 | 8977f3c1 | bellard | return;
|
1518 | 8977f3c1 | bellard | case 0x33: |
1519 | 8977f3c1 | bellard | /* OPTION */
|
1520 | 8977f3c1 | bellard | FLOPPY_DPRINTF("OPTION command\n");
|
1521 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1522 | baca51fa | bellard | fdctrl->data_len = 2;
|
1523 | 8977f3c1 | bellard | goto enqueue;
|
1524 | 8977f3c1 | bellard | case 0x42: |
1525 | 8977f3c1 | bellard | /* READ_TRACK */
|
1526 | 8977f3c1 | bellard | FLOPPY_DPRINTF("READ_TRACK command\n");
|
1527 | 8977f3c1 | bellard | /* 8 parameters cmd */
|
1528 | baca51fa | bellard | fdctrl->data_len = 9;
|
1529 | 8977f3c1 | bellard | goto enqueue;
|
1530 | 8977f3c1 | bellard | case 0x4A: |
1531 | 8977f3c1 | bellard | /* READ_ID */
|
1532 | 8977f3c1 | bellard | FLOPPY_DPRINTF("READ_ID command\n");
|
1533 | 8977f3c1 | bellard | /* 1 parameter cmd */
|
1534 | baca51fa | bellard | fdctrl->data_len = 2;
|
1535 | 8977f3c1 | bellard | goto enqueue;
|
1536 | 8977f3c1 | bellard | case 0x4C: |
1537 | 8977f3c1 | bellard | /* RESTORE */
|
1538 | 8977f3c1 | bellard | FLOPPY_DPRINTF("RESTORE command\n");
|
1539 | 8977f3c1 | bellard | /* 17 parameters cmd */
|
1540 | baca51fa | bellard | fdctrl->data_len = 18;
|
1541 | 8977f3c1 | bellard | goto enqueue;
|
1542 | 8977f3c1 | bellard | case 0x4D: |
1543 | 8977f3c1 | bellard | /* FORMAT_TRACK */
|
1544 | 8977f3c1 | bellard | FLOPPY_DPRINTF("FORMAT_TRACK command\n");
|
1545 | 8977f3c1 | bellard | /* 5 parameters cmd */
|
1546 | baca51fa | bellard | fdctrl->data_len = 6;
|
1547 | 8977f3c1 | bellard | goto enqueue;
|
1548 | 8977f3c1 | bellard | case 0x8E: |
1549 | 8977f3c1 | bellard | /* DRIVE_SPECIFICATION_COMMAND */
|
1550 | 8977f3c1 | bellard | FLOPPY_DPRINTF("DRIVE_SPECIFICATION_COMMAND command\n");
|
1551 | 8977f3c1 | bellard | /* 5 parameters cmd */
|
1552 | baca51fa | bellard | fdctrl->data_len = 6;
|
1553 | 8977f3c1 | bellard | goto enqueue;
|
1554 | 8977f3c1 | bellard | case 0x8F: |
1555 | 8977f3c1 | bellard | /* RELATIVE_SEEK_OUT */
|
1556 | 8977f3c1 | bellard | FLOPPY_DPRINTF("RELATIVE_SEEK_OUT command\n");
|
1557 | 8977f3c1 | bellard | /* 2 parameters cmd */
|
1558 | baca51fa | bellard | fdctrl->data_len = 3;
|
1559 | 8977f3c1 | bellard | goto enqueue;
|
1560 | 8977f3c1 | bellard | case 0x94: |
1561 | 8977f3c1 | bellard | /* LOCK */
|
1562 | 8977f3c1 | bellard | FLOPPY_DPRINTF("LOCK command\n");
|
1563 | 8977f3c1 | bellard | /* No parameters cmd */
|
1564 | baca51fa | bellard | fdctrl->lock = 1;
|
1565 | baca51fa | bellard | fdctrl->fifo[0] = 0x10; |
1566 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 1); |
1567 | 8977f3c1 | bellard | return;
|
1568 | 8977f3c1 | bellard | case 0xCD: |
1569 | 8977f3c1 | bellard | /* FORMAT_AND_WRITE */
|
1570 | 8977f3c1 | bellard | FLOPPY_DPRINTF("FORMAT_AND_WRITE command\n");
|
1571 | 8977f3c1 | bellard | /* 10 parameters cmd */
|
1572 | baca51fa | bellard | fdctrl->data_len = 11;
|
1573 | 8977f3c1 | bellard | goto enqueue;
|
1574 | 8977f3c1 | bellard | case 0xCF: |
1575 | 8977f3c1 | bellard | /* RELATIVE_SEEK_IN */
|
1576 | 8977f3c1 | bellard | FLOPPY_DPRINTF("RELATIVE_SEEK_IN command\n");
|
1577 | 8977f3c1 | bellard | /* 2 parameters cmd */
|
1578 | baca51fa | bellard | fdctrl->data_len = 3;
|
1579 | 8977f3c1 | bellard | goto enqueue;
|
1580 | 8977f3c1 | bellard | default:
|
1581 | 8977f3c1 | bellard | /* Unknown command */
|
1582 | 8977f3c1 | bellard | FLOPPY_ERROR("unknown command: 0x%02x\n", value);
|
1583 | baca51fa | bellard | fdctrl_unimplemented(fdctrl); |
1584 | 8977f3c1 | bellard | return;
|
1585 | 8977f3c1 | bellard | } |
1586 | 8977f3c1 | bellard | } |
1587 | 4f431960 | j_mayer | enqueue:
|
1588 | baca51fa | bellard | FLOPPY_DPRINTF("%s: %02x\n", __func__, value);
|
1589 | baca51fa | bellard | fdctrl->fifo[fdctrl->data_pos] = value; |
1590 | baca51fa | bellard | if (++fdctrl->data_pos == fdctrl->data_len) {
|
1591 | 8977f3c1 | bellard | /* We now have all parameters
|
1592 | 8977f3c1 | bellard | * and will be able to treat the command
|
1593 | 8977f3c1 | bellard | */
|
1594 | 4f431960 | j_mayer | if (fdctrl->data_state & FD_STATE_FORMAT) {
|
1595 | 4f431960 | j_mayer | fdctrl_format_sector(fdctrl); |
1596 | 8977f3c1 | bellard | return;
|
1597 | 8977f3c1 | bellard | } |
1598 | 4f431960 | j_mayer | switch (fdctrl->fifo[0] & 0x1F) { |
1599 | 4f431960 | j_mayer | case 0x06: |
1600 | 4f431960 | j_mayer | { |
1601 | 4f431960 | j_mayer | /* READ variants */
|
1602 | 4f431960 | j_mayer | FLOPPY_DPRINTF("treat READ command\n");
|
1603 | 4f431960 | j_mayer | fdctrl_start_transfer(fdctrl, FD_DIR_READ); |
1604 | 4f431960 | j_mayer | return;
|
1605 | 4f431960 | j_mayer | } |
1606 | 8977f3c1 | bellard | case 0x0C: |
1607 | 8977f3c1 | bellard | /* READ_DELETED variants */
|
1608 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat READ_DELETED command\n");
|
1609 | 8977f3c1 | bellard | FLOPPY_ERROR("treat READ_DELETED command\n");
|
1610 | baca51fa | bellard | fdctrl_start_transfer_del(fdctrl, FD_DIR_READ); |
1611 | 8977f3c1 | bellard | return;
|
1612 | 8977f3c1 | bellard | case 0x16: |
1613 | 8977f3c1 | bellard | /* VERIFY variants */
|
1614 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat VERIFY command\n");
|
1615 | 8977f3c1 | bellard | FLOPPY_ERROR("treat VERIFY command\n");
|
1616 | baca51fa | bellard | fdctrl_stop_transfer(fdctrl, 0x20, 0x00, 0x00); |
1617 | 8977f3c1 | bellard | return;
|
1618 | 8977f3c1 | bellard | case 0x10: |
1619 | 8977f3c1 | bellard | /* SCAN_EQUAL variants */
|
1620 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat SCAN_EQUAL command\n");
|
1621 | 8977f3c1 | bellard | FLOPPY_ERROR("treat SCAN_EQUAL command\n");
|
1622 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_SCANE); |
1623 | 8977f3c1 | bellard | return;
|
1624 | 8977f3c1 | bellard | case 0x19: |
1625 | 8977f3c1 | bellard | /* SCAN_LOW_OR_EQUAL variants */
|
1626 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat SCAN_LOW_OR_EQUAL command\n");
|
1627 | 8977f3c1 | bellard | FLOPPY_ERROR("treat SCAN_LOW_OR_EQUAL command\n");
|
1628 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_SCANL); |
1629 | 8977f3c1 | bellard | return;
|
1630 | 8977f3c1 | bellard | case 0x1D: |
1631 | 8977f3c1 | bellard | /* SCAN_HIGH_OR_EQUAL variants */
|
1632 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat SCAN_HIGH_OR_EQUAL command\n");
|
1633 | 8977f3c1 | bellard | FLOPPY_ERROR("treat SCAN_HIGH_OR_EQUAL command\n");
|
1634 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_SCANH); |
1635 | 8977f3c1 | bellard | return;
|
1636 | 8977f3c1 | bellard | default:
|
1637 | 8977f3c1 | bellard | break;
|
1638 | 8977f3c1 | bellard | } |
1639 | baca51fa | bellard | switch (fdctrl->fifo[0] & 0x3F) { |
1640 | 8977f3c1 | bellard | case 0x05: |
1641 | 8977f3c1 | bellard | /* WRITE variants */
|
1642 | baca51fa | bellard | FLOPPY_DPRINTF("treat WRITE command (%02x)\n", fdctrl->fifo[0]); |
1643 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_WRITE); |
1644 | 8977f3c1 | bellard | return;
|
1645 | 8977f3c1 | bellard | case 0x09: |
1646 | 8977f3c1 | bellard | /* WRITE_DELETED variants */
|
1647 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat WRITE_DELETED command\n");
|
1648 | 8977f3c1 | bellard | FLOPPY_ERROR("treat WRITE_DELETED command\n");
|
1649 | baca51fa | bellard | fdctrl_start_transfer_del(fdctrl, FD_DIR_WRITE); |
1650 | 8977f3c1 | bellard | return;
|
1651 | 8977f3c1 | bellard | default:
|
1652 | 8977f3c1 | bellard | break;
|
1653 | 8977f3c1 | bellard | } |
1654 | baca51fa | bellard | switch (fdctrl->fifo[0]) { |
1655 | 8977f3c1 | bellard | case 0x03: |
1656 | 8977f3c1 | bellard | /* SPECIFY */
|
1657 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat SPECIFY command\n");
|
1658 | baca51fa | bellard | fdctrl->timer0 = (fdctrl->fifo[1] >> 4) & 0xF; |
1659 | e309de25 | bellard | fdctrl->timer1 = fdctrl->fifo[2] >> 1; |
1660 | 4f431960 | j_mayer | fdctrl->dma_en = 1 - (fdctrl->fifo[2] & 1) ; |
1661 | 8977f3c1 | bellard | /* No result back */
|
1662 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1663 | 8977f3c1 | bellard | break;
|
1664 | 8977f3c1 | bellard | case 0x04: |
1665 | 8977f3c1 | bellard | /* SENSE_DRIVE_STATUS */
|
1666 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat SENSE_DRIVE_STATUS command\n");
|
1667 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1668 | 4f431960 | j_mayer | cur_drv = get_cur_drv(fdctrl); |
1669 | baca51fa | bellard | cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; |
1670 | 8977f3c1 | bellard | /* 1 Byte status back */
|
1671 | baca51fa | bellard | fdctrl->fifo[0] = (cur_drv->ro << 6) | |
1672 | 8977f3c1 | bellard | (cur_drv->track == 0 ? 0x10 : 0x00) | |
1673 | 890fa6be | bellard | (cur_drv->head << 2) |
|
1674 | 890fa6be | bellard | fdctrl->cur_drv | |
1675 | 890fa6be | bellard | 0x28;
|
1676 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 0); |
1677 | 8977f3c1 | bellard | break;
|
1678 | 8977f3c1 | bellard | case 0x07: |
1679 | 8977f3c1 | bellard | /* RECALIBRATE */
|
1680 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat RECALIBRATE command\n");
|
1681 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1682 | 4f431960 | j_mayer | cur_drv = get_cur_drv(fdctrl); |
1683 | 8977f3c1 | bellard | fd_recalibrate(cur_drv); |
1684 | 4f431960 | j_mayer | fdctrl_reset_fifo(fdctrl); |
1685 | 8977f3c1 | bellard | /* Raise Interrupt */
|
1686 | 4f431960 | j_mayer | fdctrl_raise_irq(fdctrl, 0x20);
|
1687 | 8977f3c1 | bellard | break;
|
1688 | 8977f3c1 | bellard | case 0x0F: |
1689 | 8977f3c1 | bellard | /* SEEK */
|
1690 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat SEEK command\n");
|
1691 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1692 | 4f431960 | j_mayer | cur_drv = get_cur_drv(fdctrl); |
1693 | 4f431960 | j_mayer | fd_start(cur_drv); |
1694 | baca51fa | bellard | if (fdctrl->fifo[2] <= cur_drv->track) |
1695 | 8977f3c1 | bellard | cur_drv->dir = 1;
|
1696 | 8977f3c1 | bellard | else
|
1697 | 8977f3c1 | bellard | cur_drv->dir = 0;
|
1698 | 4f431960 | j_mayer | fdctrl_reset_fifo(fdctrl); |
1699 | baca51fa | bellard | if (fdctrl->fifo[2] > cur_drv->max_track) { |
1700 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x60);
|
1701 | 8977f3c1 | bellard | } else {
|
1702 | baca51fa | bellard | cur_drv->track = fdctrl->fifo[2];
|
1703 | 8977f3c1 | bellard | /* Raise Interrupt */
|
1704 | baca51fa | bellard | fdctrl_raise_irq(fdctrl, 0x20);
|
1705 | 8977f3c1 | bellard | } |
1706 | 8977f3c1 | bellard | break;
|
1707 | 8977f3c1 | bellard | case 0x12: |
1708 | 8977f3c1 | bellard | /* PERPENDICULAR_MODE */
|
1709 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat PERPENDICULAR_MODE command\n");
|
1710 | baca51fa | bellard | if (fdctrl->fifo[1] & 0x80) |
1711 | baca51fa | bellard | cur_drv->perpendicular = fdctrl->fifo[1] & 0x7; |
1712 | 8977f3c1 | bellard | /* No result back */
|
1713 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1714 | 8977f3c1 | bellard | break;
|
1715 | 8977f3c1 | bellard | case 0x13: |
1716 | 8977f3c1 | bellard | /* CONFIGURE */
|
1717 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat CONFIGURE command\n");
|
1718 | baca51fa | bellard | fdctrl->config = fdctrl->fifo[2];
|
1719 | baca51fa | bellard | fdctrl->precomp_trk = fdctrl->fifo[3];
|
1720 | 8977f3c1 | bellard | /* No result back */
|
1721 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1722 | 8977f3c1 | bellard | break;
|
1723 | 8977f3c1 | bellard | case 0x17: |
1724 | 8977f3c1 | bellard | /* POWERDOWN_MODE */
|
1725 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat POWERDOWN_MODE command\n");
|
1726 | baca51fa | bellard | fdctrl->pwrd = fdctrl->fifo[1];
|
1727 | baca51fa | bellard | fdctrl->fifo[0] = fdctrl->fifo[1]; |
1728 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 1); |
1729 | 8977f3c1 | bellard | break;
|
1730 | 8977f3c1 | bellard | case 0x33: |
1731 | 8977f3c1 | bellard | /* OPTION */
|
1732 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat OPTION command\n");
|
1733 | 8977f3c1 | bellard | /* No result back */
|
1734 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1735 | 8977f3c1 | bellard | break;
|
1736 | 8977f3c1 | bellard | case 0x42: |
1737 | 8977f3c1 | bellard | /* READ_TRACK */
|
1738 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat READ_TRACK command\n");
|
1739 | 8977f3c1 | bellard | FLOPPY_ERROR("treat READ_TRACK command\n");
|
1740 | baca51fa | bellard | fdctrl_start_transfer(fdctrl, FD_DIR_READ); |
1741 | 8977f3c1 | bellard | break;
|
1742 | 8977f3c1 | bellard | case 0x4A: |
1743 | 4f431960 | j_mayer | /* READ_ID */
|
1744 | baca51fa | bellard | FLOPPY_DPRINTF("treat READ_ID command\n");
|
1745 | ed5fd2cc | bellard | /* XXX: should set main status register to busy */
|
1746 | 890fa6be | bellard | cur_drv->head = (fdctrl->fifo[1] >> 2) & 1; |
1747 | 5fafdf24 | ths | qemu_mod_timer(fdctrl->result_timer, |
1748 | ed5fd2cc | bellard | qemu_get_clock(vm_clock) + (ticks_per_sec / 50));
|
1749 | 8977f3c1 | bellard | break;
|
1750 | 8977f3c1 | bellard | case 0x4C: |
1751 | 8977f3c1 | bellard | /* RESTORE */
|
1752 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat RESTORE command\n");
|
1753 | 8977f3c1 | bellard | /* Drives position */
|
1754 | baca51fa | bellard | drv0(fdctrl)->track = fdctrl->fifo[3];
|
1755 | baca51fa | bellard | drv1(fdctrl)->track = fdctrl->fifo[4];
|
1756 | 8977f3c1 | bellard | /* timers */
|
1757 | baca51fa | bellard | fdctrl->timer0 = fdctrl->fifo[7];
|
1758 | baca51fa | bellard | fdctrl->timer1 = fdctrl->fifo[8];
|
1759 | baca51fa | bellard | cur_drv->last_sect = fdctrl->fifo[9];
|
1760 | baca51fa | bellard | fdctrl->lock = fdctrl->fifo[10] >> 7; |
1761 | baca51fa | bellard | cur_drv->perpendicular = (fdctrl->fifo[10] >> 2) & 0xF; |
1762 | baca51fa | bellard | fdctrl->config = fdctrl->fifo[11];
|
1763 | baca51fa | bellard | fdctrl->precomp_trk = fdctrl->fifo[12];
|
1764 | baca51fa | bellard | fdctrl->pwrd = fdctrl->fifo[13];
|
1765 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1766 | 8977f3c1 | bellard | break;
|
1767 | 8977f3c1 | bellard | case 0x4D: |
1768 | 8977f3c1 | bellard | /* FORMAT_TRACK */
|
1769 | 4f431960 | j_mayer | FLOPPY_DPRINTF("treat FORMAT_TRACK command\n");
|
1770 | 4f431960 | j_mayer | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1771 | 4f431960 | j_mayer | cur_drv = get_cur_drv(fdctrl); |
1772 | 4f431960 | j_mayer | fdctrl->data_state |= FD_STATE_FORMAT; |
1773 | 4f431960 | j_mayer | if (fdctrl->fifo[0] & 0x80) |
1774 | 4f431960 | j_mayer | fdctrl->data_state |= FD_STATE_MULTI; |
1775 | 4f431960 | j_mayer | else
|
1776 | 4f431960 | j_mayer | fdctrl->data_state &= ~FD_STATE_MULTI; |
1777 | 4f431960 | j_mayer | fdctrl->data_state &= ~FD_STATE_SEEK; |
1778 | 4f431960 | j_mayer | cur_drv->bps = |
1779 | 4f431960 | j_mayer | fdctrl->fifo[2] > 7 ? 16384 : 128 << fdctrl->fifo[2]; |
1780 | baca51fa | bellard | #if 0
|
1781 | 4f431960 | j_mayer | cur_drv->last_sect =
|
1782 | 4f431960 | j_mayer | cur_drv->flags & FDISK_DBL_SIDES ? fdctrl->fifo[3] :
|
1783 | 4f431960 | j_mayer | fdctrl->fifo[3] / 2;
|
1784 | baca51fa | bellard | #else
|
1785 | 4f431960 | j_mayer | cur_drv->last_sect = fdctrl->fifo[3];
|
1786 | baca51fa | bellard | #endif
|
1787 | 4f431960 | j_mayer | /* TODO: implement format using DMA expected by the Bochs BIOS
|
1788 | 4f431960 | j_mayer | * and Linux fdformat (read 3 bytes per sector via DMA and fill
|
1789 | 4f431960 | j_mayer | * the sector with the specified fill byte
|
1790 | 4f431960 | j_mayer | */
|
1791 | 4f431960 | j_mayer | fdctrl->data_state &= ~FD_STATE_FORMAT; |
1792 | 4f431960 | j_mayer | fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); |
1793 | 8977f3c1 | bellard | break;
|
1794 | 8977f3c1 | bellard | case 0x8E: |
1795 | 8977f3c1 | bellard | /* DRIVE_SPECIFICATION_COMMAND */
|
1796 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat DRIVE_SPECIFICATION_COMMAND command\n");
|
1797 | baca51fa | bellard | if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x80) { |
1798 | 8977f3c1 | bellard | /* Command parameters done */
|
1799 | baca51fa | bellard | if (fdctrl->fifo[fdctrl->data_pos - 1] & 0x40) { |
1800 | baca51fa | bellard | fdctrl->fifo[0] = fdctrl->fifo[1]; |
1801 | baca51fa | bellard | fdctrl->fifo[2] = 0; |
1802 | baca51fa | bellard | fdctrl->fifo[3] = 0; |
1803 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 4, 1); |
1804 | 8977f3c1 | bellard | } else {
|
1805 | baca51fa | bellard | fdctrl_reset_fifo(fdctrl); |
1806 | 8977f3c1 | bellard | } |
1807 | baca51fa | bellard | } else if (fdctrl->data_len > 7) { |
1808 | 8977f3c1 | bellard | /* ERROR */
|
1809 | baca51fa | bellard | fdctrl->fifo[0] = 0x80 | |
1810 | baca51fa | bellard | (cur_drv->head << 2) | fdctrl->cur_drv;
|
1811 | baca51fa | bellard | fdctrl_set_fifo(fdctrl, 1, 1); |
1812 | 8977f3c1 | bellard | } |
1813 | 8977f3c1 | bellard | break;
|
1814 | 8977f3c1 | bellard | case 0x8F: |
1815 | 8977f3c1 | bellard | /* RELATIVE_SEEK_OUT */
|
1816 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat RELATIVE_SEEK_OUT command\n");
|
1817 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1818 | 4f431960 | j_mayer | cur_drv = get_cur_drv(fdctrl); |
1819 | 4f431960 | j_mayer | fd_start(cur_drv); |
1820 | 4f431960 | j_mayer | cur_drv->dir = 0;
|
1821 | baca51fa | bellard | if (fdctrl->fifo[2] + cur_drv->track >= cur_drv->max_track) { |
1822 | 4f431960 | j_mayer | cur_drv->track = cur_drv->max_track - 1;
|
1823 | baca51fa | bellard | } else {
|
1824 | baca51fa | bellard | cur_drv->track += fdctrl->fifo[2];
|
1825 | 8977f3c1 | bellard | } |
1826 | 4f431960 | j_mayer | fdctrl_reset_fifo(fdctrl); |
1827 | 4f431960 | j_mayer | fdctrl_raise_irq(fdctrl, 0x20);
|
1828 | 8977f3c1 | bellard | break;
|
1829 | 8977f3c1 | bellard | case 0xCD: |
1830 | 8977f3c1 | bellard | /* FORMAT_AND_WRITE */
|
1831 | 8977f3c1 | bellard | // FLOPPY_DPRINTF("treat FORMAT_AND_WRITE command\n");
|
1832 | 8977f3c1 | bellard | FLOPPY_ERROR("treat FORMAT_AND_WRITE command\n");
|
1833 | baca51fa | bellard | fdctrl_unimplemented(fdctrl); |
1834 | 8977f3c1 | bellard | break;
|
1835 | 8977f3c1 | bellard | case 0xCF: |
1836 | 4f431960 | j_mayer | /* RELATIVE_SEEK_IN */
|
1837 | 8977f3c1 | bellard | FLOPPY_DPRINTF("treat RELATIVE_SEEK_IN command\n");
|
1838 | baca51fa | bellard | fdctrl->cur_drv = fdctrl->fifo[1] & 1; |
1839 | 4f431960 | j_mayer | cur_drv = get_cur_drv(fdctrl); |
1840 | 4f431960 | j_mayer | fd_start(cur_drv); |
1841 | 4f431960 | j_mayer | cur_drv->dir = 1;
|
1842 | baca51fa | bellard | if (fdctrl->fifo[2] > cur_drv->track) { |
1843 | 4f431960 | j_mayer | cur_drv->track = 0;
|
1844 | baca51fa | bellard | } else {
|
1845 | baca51fa | bellard | cur_drv->track -= fdctrl->fifo[2];
|
1846 | 8977f3c1 | bellard | } |
1847 | 4f431960 | j_mayer | fdctrl_reset_fifo(fdctrl); |
1848 | 4f431960 | j_mayer | /* Raise Interrupt */
|
1849 | 4f431960 | j_mayer | fdctrl_raise_irq(fdctrl, 0x20);
|
1850 | 8977f3c1 | bellard | break;
|
1851 | 8977f3c1 | bellard | } |
1852 | 8977f3c1 | bellard | } |
1853 | 8977f3c1 | bellard | } |
1854 | ed5fd2cc | bellard | |
1855 | ed5fd2cc | bellard | static void fdctrl_result_timer(void *opaque) |
1856 | ed5fd2cc | bellard | { |
1857 | ed5fd2cc | bellard | fdctrl_t *fdctrl = opaque; |
1858 | b7ffa3b1 | ths | fdrive_t *cur_drv = get_cur_drv(fdctrl); |
1859 | 4f431960 | j_mayer | |
1860 | b7ffa3b1 | ths | /* Pretend we are spinning.
|
1861 | b7ffa3b1 | ths | * This is needed for Coherent, which uses READ ID to check for
|
1862 | b7ffa3b1 | ths | * sector interleaving.
|
1863 | b7ffa3b1 | ths | */
|
1864 | b7ffa3b1 | ths | if (cur_drv->last_sect != 0) { |
1865 | b7ffa3b1 | ths | cur_drv->sect = (cur_drv->sect % cur_drv->last_sect) + 1;
|
1866 | b7ffa3b1 | ths | } |
1867 | ed5fd2cc | bellard | fdctrl_stop_transfer(fdctrl, 0x00, 0x00, 0x00); |
1868 | ed5fd2cc | bellard | } |