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c8e8bc85 TH |
1 | /* |
2 | * QEMU NeXT Keyboard/Mouse emulation | |
3 | * | |
4 | * Copyright (c) 2011 Bryce Lanham | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | /* | |
26 | * This is admittedly hackish, but works well enough for basic input. Mouse | |
27 | * support will be added once we can boot something that needs the mouse. | |
28 | */ | |
29 | ||
30 | #include "qemu/osdep.h" | |
31 | #include "qemu/log.h" | |
c8e8bc85 TH |
32 | #include "hw/sysbus.h" |
33 | #include "hw/m68k/next-cube.h" | |
34 | #include "ui/console.h" | |
c8e8bc85 | 35 | #include "migration/vmstate.h" |
db1015e9 | 36 | #include "qom/object.h" |
c8e8bc85 | 37 | |
8063396b | 38 | OBJECT_DECLARE_SIMPLE_TYPE(NextKBDState, NEXTKBD) |
c8e8bc85 | 39 | |
8b81968c | 40 | /* following definitions from next68k netbsd */ |
c8e8bc85 TH |
41 | #define CSR_INT 0x00800000 |
42 | #define CSR_DATA 0x00400000 | |
43 | ||
44 | #define KD_KEYMASK 0x007f | |
45 | #define KD_DIRECTION 0x0080 /* pressed or released */ | |
46 | #define KD_CNTL 0x0100 | |
47 | #define KD_LSHIFT 0x0200 | |
48 | #define KD_RSHIFT 0x0400 | |
49 | #define KD_LCOMM 0x0800 | |
50 | #define KD_RCOMM 0x1000 | |
51 | #define KD_LALT 0x2000 | |
52 | #define KD_RALT 0x4000 | |
53 | #define KD_VALID 0x8000 /* only set for scancode keys ? */ | |
54 | #define KD_MODS 0x4f00 | |
55 | ||
56 | #define KBD_QUEUE_SIZE 256 | |
57 | ||
58 | typedef struct { | |
59 | uint8_t data[KBD_QUEUE_SIZE]; | |
60 | int rptr, wptr, count; | |
61 | } KBDQueue; | |
62 | ||
63 | ||
db1015e9 | 64 | struct NextKBDState { |
c8e8bc85 TH |
65 | SysBusDevice sbd; |
66 | MemoryRegion mr; | |
67 | KBDQueue queue; | |
68 | uint16_t shift; | |
db1015e9 | 69 | }; |
c8e8bc85 TH |
70 | |
71 | static void queue_code(void *opaque, int code); | |
72 | ||
73 | /* lots of magic numbers here */ | |
74 | static uint32_t kbd_read_byte(void *opaque, hwaddr addr) | |
75 | { | |
76 | switch (addr & 0x3) { | |
77 | case 0x0: /* 0xe000 */ | |
78 | return 0x80 | 0x20; | |
79 | ||
80 | case 0x1: /* 0xe001 */ | |
81 | return 0x80 | 0x40 | 0x20 | 0x10; | |
82 | ||
83 | case 0x2: /* 0xe002 */ | |
84 | /* returning 0x40 caused mach to hang */ | |
85 | return 0x10 | 0x2 | 0x1; | |
86 | ||
87 | default: | |
88 | qemu_log_mask(LOG_UNIMP, "NeXT kbd read byte %"HWADDR_PRIx"\n", addr); | |
89 | } | |
90 | ||
91 | return 0; | |
92 | } | |
93 | ||
94 | static uint32_t kbd_read_word(void *opaque, hwaddr addr) | |
95 | { | |
96 | qemu_log_mask(LOG_UNIMP, "NeXT kbd read word %"HWADDR_PRIx"\n", addr); | |
97 | return 0; | |
98 | } | |
99 | ||
100 | /* even more magic numbers */ | |
101 | static uint32_t kbd_read_long(void *opaque, hwaddr addr) | |
102 | { | |
103 | int key = 0; | |
104 | NextKBDState *s = NEXTKBD(opaque); | |
105 | KBDQueue *q = &s->queue; | |
106 | ||
107 | switch (addr & 0xf) { | |
108 | case 0x0: /* 0xe000 */ | |
109 | return 0xA0F09300; | |
110 | ||
111 | case 0x8: /* 0xe008 */ | |
112 | /* get keycode from buffer */ | |
113 | if (q->count > 0) { | |
114 | key = q->data[q->rptr]; | |
115 | if (++q->rptr == KBD_QUEUE_SIZE) { | |
116 | q->rptr = 0; | |
117 | } | |
118 | ||
119 | q->count--; | |
120 | ||
121 | if (s->shift) { | |
122 | key |= s->shift; | |
123 | } | |
124 | ||
125 | if (key & 0x80) { | |
126 | return 0; | |
127 | } else { | |
128 | return 0x10000000 | KD_VALID | key; | |
129 | } | |
130 | } else { | |
131 | return 0; | |
132 | } | |
133 | ||
134 | default: | |
135 | qemu_log_mask(LOG_UNIMP, "NeXT kbd read long %"HWADDR_PRIx"\n", addr); | |
136 | return 0; | |
137 | } | |
138 | } | |
139 | ||
140 | static uint64_t kbd_readfn(void *opaque, hwaddr addr, unsigned size) | |
141 | { | |
142 | switch (size) { | |
143 | case 1: | |
144 | return kbd_read_byte(opaque, addr); | |
145 | case 2: | |
146 | return kbd_read_word(opaque, addr); | |
147 | case 4: | |
148 | return kbd_read_long(opaque, addr); | |
149 | default: | |
150 | g_assert_not_reached(); | |
151 | } | |
152 | } | |
153 | ||
154 | static void kbd_writefn(void *opaque, hwaddr addr, uint64_t value, | |
155 | unsigned size) | |
156 | { | |
157 | qemu_log_mask(LOG_UNIMP, "NeXT kbd write: size=%u addr=0x%"HWADDR_PRIx | |
158 | "val=0x%"PRIx64"\n", size, addr, value); | |
159 | } | |
160 | ||
161 | static const MemoryRegionOps kbd_ops = { | |
162 | .read = kbd_readfn, | |
163 | .write = kbd_writefn, | |
164 | .valid.min_access_size = 1, | |
165 | .valid.max_access_size = 4, | |
166 | .endianness = DEVICE_NATIVE_ENDIAN, | |
167 | }; | |
168 | ||
169 | static void nextkbd_event(void *opaque, int ch) | |
170 | { | |
171 | /* | |
172 | * Will want to set vars for caps/num lock | |
173 | * if (ch & 0x80) -> key release | |
174 | * there's also e0 escaped scancodes that might need to be handled | |
175 | */ | |
176 | queue_code(opaque, ch); | |
177 | } | |
178 | ||
179 | static const unsigned char next_keycodes[128] = { | |
180 | 0x00, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x50, 0x4F, | |
181 | 0x4E, 0x1E, 0x1F, 0x20, 0x1D, 0x1C, 0x1B, 0x00, | |
182 | 0x42, 0x43, 0x44, 0x45, 0x48, 0x47, 0x46, 0x06, | |
183 | 0x07, 0x08, 0x00, 0x00, 0x2A, 0x00, 0x39, 0x3A, | |
184 | 0x3B, 0x3C, 0x3D, 0x40, 0x3F, 0x3E, 0x2D, 0x2C, | |
185 | 0x2B, 0x26, 0x00, 0x00, 0x31, 0x32, 0x33, 0x34, | |
186 | 0x35, 0x37, 0x36, 0x2e, 0x2f, 0x30, 0x00, 0x00, | |
187 | 0x00, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
188 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
189 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
190 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
191 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 | |
192 | }; | |
193 | ||
194 | static void queue_code(void *opaque, int code) | |
195 | { | |
196 | NextKBDState *s = NEXTKBD(opaque); | |
197 | KBDQueue *q = &s->queue; | |
198 | int key = code & KD_KEYMASK; | |
199 | int release = code & 0x80; | |
200 | static int ext; | |
201 | ||
202 | if (code == 0xE0) { | |
203 | ext = 1; | |
204 | } | |
205 | ||
206 | if (code == 0x2A || code == 0x1D || code == 0x36) { | |
207 | if (code == 0x2A) { | |
208 | s->shift = KD_LSHIFT; | |
209 | } else if (code == 0x36) { | |
210 | s->shift = KD_RSHIFT; | |
211 | ext = 0; | |
212 | } else if (code == 0x1D && !ext) { | |
213 | s->shift = KD_LCOMM; | |
214 | } else if (code == 0x1D && ext) { | |
215 | ext = 0; | |
216 | s->shift = KD_RCOMM; | |
217 | } | |
218 | return; | |
219 | } else if (code == (0x2A | 0x80) || code == (0x1D | 0x80) || | |
220 | code == (0x36 | 0x80)) { | |
221 | s->shift = 0; | |
222 | return; | |
223 | } | |
224 | ||
225 | if (q->count >= KBD_QUEUE_SIZE) { | |
226 | return; | |
227 | } | |
228 | ||
229 | q->data[q->wptr] = next_keycodes[key] | release; | |
230 | ||
231 | if (++q->wptr == KBD_QUEUE_SIZE) { | |
232 | q->wptr = 0; | |
233 | } | |
234 | ||
235 | q->count++; | |
236 | ||
237 | /* | |
238 | * might need to actually trigger the NeXT irq, but as the keyboard works | |
239 | * at the moment, I'll worry about it later | |
240 | */ | |
241 | /* s->update_irq(s->update_arg, 1); */ | |
242 | } | |
243 | ||
244 | static void nextkbd_reset(DeviceState *dev) | |
245 | { | |
246 | NextKBDState *nks = NEXTKBD(dev); | |
247 | ||
248 | memset(&nks->queue, 0, sizeof(KBDQueue)); | |
249 | nks->shift = 0; | |
250 | } | |
251 | ||
252 | static void nextkbd_realize(DeviceState *dev, Error **errp) | |
253 | { | |
254 | NextKBDState *s = NEXTKBD(dev); | |
255 | ||
256 | memory_region_init_io(&s->mr, OBJECT(dev), &kbd_ops, s, "next.kbd", 0x1000); | |
257 | sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->mr); | |
258 | ||
259 | qemu_add_kbd_event_handler(nextkbd_event, s); | |
260 | } | |
261 | ||
262 | static const VMStateDescription nextkbd_vmstate = { | |
263 | .name = TYPE_NEXTKBD, | |
264 | .unmigratable = 1, /* TODO: Implement this when m68k CPU is migratable */ | |
265 | }; | |
266 | ||
267 | static void nextkbd_class_init(ObjectClass *oc, void *data) | |
268 | { | |
269 | DeviceClass *dc = DEVICE_CLASS(oc); | |
270 | ||
271 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); | |
272 | dc->vmsd = &nextkbd_vmstate; | |
273 | dc->realize = nextkbd_realize; | |
274 | dc->reset = nextkbd_reset; | |
275 | } | |
276 | ||
277 | static const TypeInfo nextkbd_info = { | |
278 | .name = TYPE_NEXTKBD, | |
279 | .parent = TYPE_SYS_BUS_DEVICE, | |
280 | .instance_size = sizeof(NextKBDState), | |
281 | .class_init = nextkbd_class_init, | |
282 | }; | |
283 | ||
284 | static void nextkbd_register_types(void) | |
285 | { | |
286 | type_register_static(&nextkbd_info); | |
287 | } | |
288 | ||
289 | type_init(nextkbd_register_types) |