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35edb766 | 1 | /* |
1aed7fd5 | 2 | * (C) Copyright 2014-2016 Leo C. <erbl259-lmu@yahoo.de> |
35edb766 | 3 | * |
ad12f284 | 4 | * SPDX-License-Identifier: GPL-2.0 |
35edb766 L |
5 | */ |
6 | ||
cb4fb1ed | 7 | #include "z180-serv.h" |
72f58822 | 8 | #include "common.h" |
5f7f3586 L |
9 | #include <stdlib.h> |
10 | #include <string.h> | |
11 | #include <stdbool.h> | |
89adce76 | 12 | #include <util/atomic.h> |
72f58822 | 13 | |
1aed7fd5 | 14 | #include "config.h" |
89adce76 | 15 | #include "background.h" |
5f7f3586 L |
16 | #include "env.h" |
17 | #include "ff.h" | |
72f58822 L |
18 | #include "serial.h" |
19 | #include "z80-if.h" | |
889202c4 | 20 | #include "debug.h" |
5f7f3586 | 21 | #include "print-utils.h" |
daacc6f9 | 22 | #include "timer.h" |
845cbdbd L |
23 | #include "time.h" |
24 | #include "bcd.h" | |
25 | #include "rtc.h" | |
7d60b20b | 26 | |
cb4fb1ed | 27 | #define DEBUG_CPM_SDIO 1 /* set to 1 to debug */ |
7d60b20b L |
28 | |
29 | #define debug_cpmsd(fmt, args...) \ | |
30 | debug_cond(DEBUG_CPM_SDIO, fmt, ##args) | |
31 | ||
32 | ||
72f58822 L |
33 | /*--------------------------------------------------------------------------*/ |
34 | ||
35 | struct msg_item { | |
36 | uint8_t fct; | |
37 | uint8_t sub_min, sub_max; | |
38 | void (*func)(uint8_t, int, uint8_t *); | |
39 | }; | |
40 | ||
41 | uint32_t msg_to_addr(uint8_t *msg) | |
42 | { | |
43 | union { | |
44 | uint32_t as32; | |
45 | uint8_t as8[4]; | |
46 | } addr; | |
47 | ||
48 | addr.as8[0] = msg[0]; | |
49 | addr.as8[1] = msg[1]; | |
50 | addr.as8[2] = msg[2]; | |
51 | addr.as8[3] = 0; | |
52 | ||
53 | return addr.as32; | |
54 | } | |
55 | ||
72f58822 | 56 | |
1a2460dc L |
57 | static int msg_xmit_header(uint8_t func, uint8_t subf, int len) |
58 | { | |
59 | z80_memfifo_putc(fifo_msgout, 0xAE); | |
60 | z80_memfifo_putc(fifo_msgout, len+2); | |
61 | z80_memfifo_putc(fifo_msgout, func); | |
62 | z80_memfifo_putc(fifo_msgout, subf); | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
67 | int msg_xmit(uint8_t func, uint8_t subf, int len, uint8_t *msg) | |
68 | { | |
69 | msg_xmit_header(func, subf, len); | |
70 | while (len--) | |
71 | z80_memfifo_putc(fifo_msgout, *msg++); | |
72 | ||
73 | return 0; | |
74 | } | |
75 | ||
72f58822 L |
76 | void do_msg_ini_memfifo(uint8_t subf, int len, uint8_t * msg) |
77 | { | |
78 | (void)len; | |
79 | ||
89adce76 | 80 | z80_memfifo_init(subf, msg_to_addr(msg)); |
72f58822 L |
81 | } |
82 | ||
83 | ||
84 | void do_msg_char_out(uint8_t subf, int len, uint8_t * msg) | |
85 | { | |
86 | (void)subf; | |
87 | ||
88 | while (len--) | |
89 | putchar(*msg++); | |
90 | } | |
91 | ||
1a2460dc L |
92 | /* echo message */ |
93 | void do_msg_echo(uint8_t subf, int len, uint8_t * msg) | |
94 | { | |
95 | (void)subf; | |
96 | ||
97 | /* send re-echo */ | |
98 | msg_xmit(1, 3, len, msg); | |
99 | } | |
100 | ||
8590a76b L |
101 | /* get timer */ |
102 | void do_msg_get_timer(uint8_t subf, int len, uint8_t * msg) | |
103 | { | |
a8eb521f | 104 | uint32_t time_ms = (len >= 4) ? *(uint32_t *) msg : 0; |
8590a76b | 105 | |
a8eb521f | 106 | time_ms = get_timer(time_ms); |
8590a76b L |
107 | msg_xmit(3, subf, sizeof(time_ms), (uint8_t *) &time_ms); |
108 | } | |
109 | ||
5f7f3586 L |
110 | /* ---------------------------------------------------------------------------*/ |
111 | ||
845cbdbd L |
112 | #define CPM_DAY_OFFSET ((1978-1900) * 365 + 19) /* 19 leap years */ |
113 | ||
114 | /* | |
115 | * Convert CP/M time stamp to a broken-down time structure | |
116 | * | |
117 | */ | |
118 | int mk_date_time (int len, uint8_t *msg, struct tm *tmp) | |
119 | { | |
120 | time_t stamp; | |
121 | ||
122 | if (len != 5) | |
123 | return -1; | |
124 | ||
125 | /* days since 2000-01-01 */ | |
126 | long days = msg[3] + (msg[4] << 8) - 8036; | |
127 | ||
128 | if (days < 0) | |
129 | return -1; | |
130 | ||
131 | stamp = days * ONE_DAY; | |
132 | stamp += bcd2bin(msg[0]); | |
133 | stamp += bcd2bin(msg[1]) * 60 ; | |
8d0fad4c | 134 | stamp += bcd2bin(msg[2]) * 3600L; |
845cbdbd L |
135 | gmtime_r(&stamp, tmp); |
136 | return 0; | |
137 | } | |
138 | ||
139 | void mk_cpm_time(struct tm *tmp, uint8_t cpm_time[5]) | |
140 | { | |
141 | uint16_t days = 1; | |
142 | uint_fast8_t leap=2; | |
143 | ||
144 | for (int year=78; year < tmp->tm_year; year++) { | |
145 | days = days + 365 + (leap == 0); | |
146 | leap = (leap+1)%4; | |
147 | } | |
148 | days += tmp->tm_yday; | |
149 | ||
150 | cpm_time[0] = bin2bcd(tmp->tm_sec); | |
151 | cpm_time[1] = bin2bcd(tmp->tm_min); | |
152 | cpm_time[2] = bin2bcd(tmp->tm_hour); | |
153 | cpm_time[3] = days; | |
154 | cpm_time[4] = days >> 8; | |
845cbdbd L |
155 | } |
156 | ||
157 | /* get/set cp/m time */ | |
158 | void do_msg_get_set_time(uint8_t subf, int len, uint8_t * msg) | |
159 | { | |
160 | struct tm t; | |
161 | uint8_t cpm_time[5]; | |
162 | int rc; | |
163 | ||
164 | memset(cpm_time, 0, ARRAY_SIZE(cpm_time)); | |
165 | ||
166 | switch (subf) { | |
167 | case 3: /* set date & time */ | |
168 | /* initialize t with current time */ | |
169 | rc = rtc_get (&t); | |
170 | ||
85046f8c | 171 | if (rc >= 0) { |
845cbdbd L |
172 | /* insert new date & time */ |
173 | if (mk_date_time (len, msg, &t) != 0) { | |
174 | my_puts_P(PSTR("## set_time: Bad date format\n")); | |
175 | break; | |
176 | } | |
177 | ||
178 | time_t time; | |
179 | time = mk_gmtime(&t); | |
180 | gmtime_r(&time, &t); | |
181 | ||
182 | /* and write to RTC */ | |
183 | rc = rtc_set (&t); | |
184 | if(rc) | |
185 | my_puts_P(PSTR("## set_time: Set date failed\n")); | |
186 | } else { | |
187 | my_puts_P(PSTR("## set_time: Get date failed\n")); | |
188 | } | |
189 | /* FALL TROUGH */ | |
190 | case 2: /* get date & time */ | |
191 | rc = rtc_get (&t); | |
85046f8c L |
192 | if (rc >= 0) { |
193 | time_t time; | |
194 | time = mk_gmtime(&t); | |
195 | //mktime(&t); | |
196 | gmtime_r(&time, &t); | |
845cbdbd | 197 | |
85046f8c L |
198 | mk_cpm_time(&t, cpm_time); |
199 | } else { | |
845cbdbd | 200 | my_puts_P(PSTR("## get_time: Get date failed\n")); |
845cbdbd | 201 | } |
845cbdbd L |
202 | break; |
203 | } | |
204 | ||
205 | msg_xmit(3, subf, sizeof(cpm_time), cpm_time); | |
206 | } | |
207 | ||
208 | /* ---------------------------------------------------------------------------*/ | |
209 | ||
1aed7fd5 L |
210 | static uint8_t disk_buffer[CONFIG_CPM_BLOCK_SIZE]; |
211 | static struct cpm_drive_s drv_table[CONFIG_CPM_MAX_DRIVE]; | |
393b1897 L |
212 | static int handle_cpm_drv_to; |
213 | ||
393b1897 | 214 | |
cb4fb1ed L |
215 | int drv_list(void) |
216 | { | |
217 | for (uint8_t i = 0; i < CONFIG_CPM_MAX_DRIVE; i++) { | |
218 | struct cpm_drive_s * p = &drv_table[i]; | |
219 | if (p->img_name) { | |
220 | printf_P(PSTR(" dsk%d: %2s %3s attached to %s\n"), i, | |
221 | p->opt&DRV_OPT_RO ? "RO":"RW", p->opt&DRV_OPT_DEBUG ? "DBG":"", | |
222 | p->img_name); | |
223 | } | |
224 | } | |
225 | return 0; | |
226 | } | |
227 | ||
228 | int drv_detach(uint8_t drv) | |
229 | { | |
230 | if (drv < CONFIG_CPM_MAX_DRIVE) { | |
231 | struct cpm_drive_s *p = &drv_table[drv]; | |
232 | ||
233 | debug_cpmsd("## detach dsk%d: %s\n", drv, | |
234 | p->img_name ? p->img_name : "-"); | |
235 | ||
236 | if (p->img_name) { | |
237 | f_close(&p->fd); | |
238 | p->opt = 0; | |
239 | p->dirty = false; | |
240 | free(p->img_name); | |
241 | p->img_name = NULL; | |
242 | } | |
243 | } | |
244 | return 0; | |
245 | } | |
246 | ||
247 | static int drv_find_file_attached(const char *fn) | |
248 | { | |
249 | for (uint8_t i = 0; i < CONFIG_CPM_MAX_DRIVE; i++) { | |
250 | struct cpm_drive_s *p = &drv_table[i]; | |
251 | if (p->img_name && !strcmp(fn, p->img_name)) { | |
252 | return i; | |
253 | } | |
254 | } | |
255 | return -1; | |
256 | } | |
257 | ||
258 | int drv_attach(uint8_t drv, const char *filename, drv_opt_t options) | |
259 | { | |
260 | int res; | |
261 | ||
262 | if (drv >= CONFIG_CPM_MAX_DRIVE) | |
263 | return AT_RANGE; | |
264 | ||
265 | struct cpm_drive_s *p = &drv_table[drv]; | |
266 | ||
267 | if (options & DRV_OPT_REATTATCH) { | |
268 | if (filename) { | |
269 | return AT_ERROR; | |
270 | } | |
271 | ||
272 | if (!p->img_name) { | |
273 | return AT_NOT; | |
274 | } | |
275 | ||
276 | p->opt = options & ~DRV_OPT_REATTATCH; | |
277 | ||
278 | /* TODO: change options */ | |
279 | ||
280 | } else { | |
281 | ||
282 | if (p->img_name) | |
283 | return AT_ALREADY; | |
284 | if (drv_find_file_attached(filename) >= 0) | |
285 | return AT_OTHER; | |
286 | ||
287 | p->opt = options & ~DRV_OPT_REATTATCH; | |
288 | ||
289 | /* new attachment */ | |
290 | ||
291 | if ((p->img_name = strdup(filename)) == NULL) | |
292 | return AT_NOMEM; | |
293 | ||
294 | res = f_open(&p->fd, p->img_name, | |
295 | FA_WRITE | FA_READ); | |
296 | ||
297 | if (!res && f_size(&p->fd) < CONFIG_CPM_DISKSIZE) { | |
298 | unsigned int bw; | |
299 | ||
300 | debug_cpmsd(" expanding image file from %ld to %ld\n", | |
301 | f_size(&p->fd), CONFIG_CPM_DISKSIZE); | |
302 | ||
303 | res = f_lseek(&p->fd, CONFIG_CPM_DISKSIZE-CONFIG_CPM_BLOCK_SIZE); | |
304 | if (!res) { | |
305 | memset(disk_buffer, 0xe5, CONFIG_CPM_BLOCK_SIZE); | |
306 | res = f_write(&p->fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &bw); | |
307 | if (res || bw < CONFIG_CPM_BLOCK_SIZE) { | |
308 | debug_cpmsd(" failed! res: %d, bytes written: %u\n", res, bw); | |
309 | } | |
310 | p->dirty = true; | |
311 | bg_setstat(handle_cpm_drv_to, 1); | |
312 | } | |
313 | } | |
314 | if (res) { | |
315 | drv_detach(drv); | |
316 | return AT_OPEN; | |
317 | } | |
318 | } | |
319 | ||
320 | return AT_OK; | |
321 | } | |
322 | ||
323 | ||
393b1897 L |
324 | int cpm_drv_to(int state) |
325 | { | |
326 | static uint32_t ts; | |
327 | ||
328 | switch(state) { | |
329 | case 0: | |
330 | break; | |
331 | ||
332 | case 1: | |
333 | ts = get_timer(0); | |
334 | state = 2; | |
335 | break; | |
336 | ||
337 | case 2: | |
338 | if (get_timer(ts) > 1000) { | |
1aed7fd5 | 339 | for (uint_fast8_t i=0; i < CONFIG_CPM_MAX_DRIVE; i++) { |
393b1897 L |
340 | if (drv_table[i].dirty) { |
341 | f_sync(&drv_table[i].fd); | |
342 | drv_table[i].dirty = false; | |
afc7c4b4 | 343 | debug_cpmsd("## %7lu f_sync: %c:\n", get_timer(0), i + CONFIG_CPM_BASE_DRIVE); |
393b1897 L |
344 | } |
345 | } | |
346 | state = 0; | |
347 | } | |
348 | } | |
349 | return state; | |
350 | } | |
351 | ||
352 | ||
353 | void msg_cpm_result(uint8_t subf, uint8_t rc, int res) | |
354 | { | |
355 | uint8_t result_msg[3]; | |
356 | ||
357 | if (res) | |
358 | rc |= 0x80; | |
359 | ||
360 | result_msg[0] = rc; | |
361 | result_msg[1] = res; | |
362 | result_msg[2] = res >> 8; | |
363 | ||
364 | if (rc) { | |
365 | debug_cpmsd("###%7lu error rc: %.02x, res: %d\n", get_timer(0), rc, res); | |
366 | } | |
367 | ||
368 | msg_xmit(2, subf, sizeof(result_msg), result_msg); | |
369 | } | |
5f7f3586 L |
370 | |
371 | /* | |
372 | db 2 ; disk command | |
373 | ds 1 ; subcommand (login/read/write) | |
374 | ds 1 ; @adrv (8 bits) +0 | |
375 | ds 1 ; @rdrv (8 bits) +1 | |
376 | ds 3 ; @xdph (24 bits) +2 | |
377 | */ | |
378 | ||
379 | void do_msg_cpm_login(uint8_t subf, int len, uint8_t * msg) | |
380 | { | |
5f7f3586 | 381 | FRESULT res = 0; |
5f7f3586 L |
382 | uint8_t drv; |
383 | char *np; | |
5f7f3586 L |
384 | |
385 | (void)subf; | |
386 | ||
afc7c4b4 | 387 | if (len != 5) { |
393b1897 | 388 | return msg_cpm_result(subf, 0x01, res); |
5f7f3586 L |
389 | } |
390 | ||
afc7c4b4 | 391 | debug_cpmsd("\n## %7lu login: %c:\n", get_timer(0), msg[1]+CONFIG_CPM_BASE_DRIVE); |
5f7f3586 | 392 | |
afc7c4b4 L |
393 | /* Get relative drive number */ |
394 | drv = msg[1]; | |
cb4fb1ed | 395 | if ( drv >= CONFIG_CPM_MAX_DRIVE) { |
393b1897 | 396 | return msg_cpm_result(subf, 0x02, res); |
5f7f3586 L |
397 | } |
398 | ||
cb4fb1ed L |
399 | |
400 | drv_table[drv].dph = ((uint32_t)msg[4] << 16) + ((uint16_t)msg[3] << 8) + msg[2]; | |
401 | ||
5f7f3586 L |
402 | |
403 | if (drv_table[drv].img_name != NULL) { | |
7d60b20b | 404 | debug_cpmsd("## %7lu close: '%s'\n", get_timer(0), drv_table[drv].img_name); |
5f7f3586 | 405 | f_close(&drv_table[drv].fd); |
393b1897 | 406 | drv_table[drv].dirty = false; |
5f7f3586 L |
407 | free(drv_table[drv].img_name); |
408 | drv_table[drv].img_name = NULL; | |
409 | } | |
410 | ||
411 | strcpy_P((char *)disk_buffer, PSTR("dsk0")); | |
412 | disk_buffer[3] = msg[0] + '0'; | |
1b77fa4e | 413 | if (((np = getenv_char((char*)disk_buffer)) == NULL) || |
5f7f3586 | 414 | ((drv_table[drv].img_name = strdup(np)) == NULL)) { |
393b1897 | 415 | return msg_cpm_result(subf, 0x03, res); |
5f7f3586 L |
416 | } |
417 | ||
418 | ||
419 | res = f_open(&drv_table[drv].fd, drv_table[drv].img_name, | |
420 | FA_WRITE | FA_READ); | |
421 | ||
7d60b20b | 422 | debug_cpmsd("## %7lu open: '%s', (env: '%s'), res: %d\n", get_timer(0), |
5f7f3586 L |
423 | drv_table[drv].img_name, disk_buffer, res); |
424 | ||
afc7c4b4 L |
425 | if (!res && f_size(&drv_table[drv].fd) < CONFIG_CPM_DISKSIZE) { |
426 | unsigned int bw; | |
427 | ||
428 | debug_cpmsd(" expanding image file from %ld to %ld\n", | |
429 | f_size(&drv_table[drv].fd), CONFIG_CPM_DISKSIZE); | |
430 | ||
431 | res = f_lseek(&drv_table[drv].fd, CONFIG_CPM_DISKSIZE-CONFIG_CPM_BLOCK_SIZE); | |
432 | if (!res) { | |
433 | memset(disk_buffer, 0xe5, CONFIG_CPM_BLOCK_SIZE); | |
434 | res = f_write(&drv_table[drv].fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &bw); | |
435 | if (res || bw < CONFIG_CPM_BLOCK_SIZE) { | |
436 | debug_cpmsd(" failed! res: %d, bytes written: %u\n", res, bw); | |
437 | } | |
438 | drv_table[drv].dirty = true; | |
439 | bg_setstat(handle_cpm_drv_to, 1); | |
440 | } | |
441 | } | |
442 | ||
5f7f3586 | 443 | /* send result*/ |
393b1897 | 444 | msg_cpm_result(subf, 0x00, res); |
5f7f3586 L |
445 | } |
446 | ||
447 | ||
448 | /* | |
449 | db 2 ; disk command | |
450 | ds 1 ; subcommand (login/read/write) | |
daacc6f9 L |
451 | ds 1 ; @adrv (8 bits) +0 |
452 | ds 1 ; @rdrv (8 bits) +1 | |
453 | ds 2 ; @trk (16 bits) +2 | |
454 | ds 2 ; @sect(16 bits) +4 | |
455 | ds 1 ; @cnt (8 bits) +6 | |
5f7f3586 L |
456 | ds 3 ; phys. transfer addr +7 |
457 | */ | |
458 | ||
daacc6f9 L |
459 | #define ADRV 0 |
460 | #define RDRV 1 | |
461 | #define TRK 2 | |
462 | #define SEC 4 | |
463 | #define CNT 6 | |
464 | #define ADDR 7 | |
465 | ||
5f7f3586 L |
466 | void do_msg_cpm_rw(uint8_t subf, int len, uint8_t * msg) |
467 | { | |
468 | uint8_t drv; | |
469 | uint32_t addr; | |
470 | uint32_t pos; | |
7d60b20b | 471 | uint8_t secs; |
5f7f3586 L |
472 | bool dowrite = (subf == 2); |
473 | FRESULT res = 0; | |
474 | uint8_t rc = 0; | |
475 | bool buserr = 0; | |
5f7f3586 | 476 | |
afc7c4b4 | 477 | if (len != 10) { |
393b1897 | 478 | return msg_cpm_result(subf, 0x01, res); |
5f7f3586 L |
479 | } |
480 | ||
afc7c4b4 | 481 | drv = msg[RDRV]; |
1aed7fd5 | 482 | if ( drv>= CONFIG_CPM_MAX_DRIVE) { |
393b1897 | 483 | return msg_cpm_result(subf, 0x02, res); |
5f7f3586 L |
484 | } |
485 | ||
7d60b20b | 486 | secs = msg[CNT]; |
daacc6f9 | 487 | addr = ((uint32_t)msg[ADDR+2] << 16) + ((uint16_t)msg[ADDR+1] << 8) + msg[ADDR]; |
5f7f3586 | 488 | |
5f7f3586 | 489 | |
daacc6f9 L |
490 | /* TODO: tracks per sector from dpb */ |
491 | pos = (((uint16_t)(msg[TRK+1] << 8) + msg[TRK]) * 8 | |
1aed7fd5 | 492 | + ((uint32_t)(msg[SEC+1] << 8) + msg[SEC])) * CONFIG_CPM_BLOCK_SIZE; |
5f7f3586 | 493 | |
7d60b20b L |
494 | debug_cpmsd("## %7lu cpm_rw: %s %c: trk:%4d, sec: %d, pos: %.8lx, secs: %2d, " |
495 | "addr: %.5lx\n", get_timer(0), dowrite ? "write" : " read", | |
afc7c4b4 L |
496 | msg[RDRV]+CONFIG_CPM_BASE_DRIVE, |
497 | ((uint16_t)(msg[TRK+1] << 8) + msg[TRK]), msg[SEC], pos, msg[CNT], addr); | |
5f7f3586 | 498 | |
1aed7fd5 L |
499 | if (pos + secs * CONFIG_CPM_BLOCK_SIZE > CONFIG_CPM_DISKSIZE) { |
500 | debug_cpmsd(" access > DISKSIZE (%.8lx > %.8lx) aborted!\n", | |
501 | pos + secs * CONFIG_CPM_BLOCK_SIZE, CONFIG_CPM_DISKSIZE); | |
502 | return msg_cpm_result(subf, 0x04, res); | |
503 | } | |
504 | ||
5f7f3586 | 505 | res = f_lseek(&drv_table[drv].fd, pos); |
1aed7fd5 | 506 | |
7d60b20b | 507 | while (!res && secs--) { |
8bbf185e | 508 | unsigned int brw; |
5f7f3586 L |
509 | if (dowrite) { |
510 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
511 | buserr = 1; | |
7d60b20b | 512 | break; |
5f7f3586 | 513 | } else { |
1aed7fd5 | 514 | z80_read_block(disk_buffer, addr, CONFIG_CPM_BLOCK_SIZE); |
5f7f3586 | 515 | z80_bus_cmd(Release); |
5f7f3586 | 516 | } |
1aed7fd5 | 517 | res = f_write(&drv_table[drv].fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &brw); |
5f7f3586 | 518 | } else { |
1aed7fd5 L |
519 | res = f_read(&drv_table[drv].fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &brw); |
520 | if (res == FR_OK) { | |
5f7f3586 L |
521 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
522 | buserr = 1; | |
7d60b20b | 523 | break; |
5f7f3586 | 524 | } else { |
afc7c4b4 | 525 | z80_write_block(disk_buffer, addr, CONFIG_CPM_BLOCK_SIZE); |
5f7f3586 L |
526 | z80_bus_cmd(Release); |
527 | } | |
528 | } | |
529 | } | |
1aed7fd5 | 530 | if (brw != CONFIG_CPM_BLOCK_SIZE) { |
afc7c4b4 L |
531 | debug_cpmsd(" short read or write: res: %d, bytes rd/wr: %u\n", res, brw); |
532 | res = 64; | |
5f7f3586 | 533 | } |
1aed7fd5 | 534 | addr += CONFIG_CPM_BLOCK_SIZE; |
5f7f3586 L |
535 | } |
536 | ||
393b1897 | 537 | if (dowrite && !res) { |
393b1897 L |
538 | drv_table[drv].dirty = true; |
539 | bg_setstat(handle_cpm_drv_to, 1); | |
540 | } | |
541 | ||
5f7f3586 | 542 | if (buserr) { |
7d60b20b | 543 | debug_cpmsd("Bus timeout\n"); |
5f7f3586 L |
544 | rc = 0x03; |
545 | } | |
5f7f3586 L |
546 | |
547 | /* send result*/ | |
393b1897 | 548 | msg_cpm_result(subf, rc, res); |
5f7f3586 L |
549 | } |
550 | ||
72f58822 L |
551 | |
552 | const FLASH struct msg_item z80_messages[] = | |
553 | { | |
554 | { 0, /* fct nr. */ | |
89adce76 | 555 | 1, 3, /* sub fct nr. from, to */ |
72f58822 L |
556 | do_msg_ini_memfifo}, |
557 | { 1, | |
558 | 1, 1, | |
559 | do_msg_char_out}, | |
1a2460dc L |
560 | { 1, |
561 | 2, 2, | |
562 | do_msg_echo}, | |
5f7f3586 L |
563 | { 2, |
564 | 0, 0, | |
565 | do_msg_cpm_login}, | |
566 | { 2, | |
567 | 1, 2, | |
568 | do_msg_cpm_rw}, | |
8590a76b L |
569 | { 3, |
570 | 1, 1, | |
571 | do_msg_get_timer}, | |
845cbdbd L |
572 | { 3, |
573 | 2, 3, /* 2: get, 3: set time and date */ | |
574 | do_msg_get_set_time}, | |
72f58822 L |
575 | { 0xff, /* end mark */ |
576 | 0, 0, | |
577 | 0}, | |
578 | ||
579 | }; | |
580 | ||
581 | ||
582 | ||
583 | ||
584 | void do_message(int len, uint8_t *msg) | |
585 | { | |
586 | uint8_t fct, sub_fct; | |
587 | int_fast8_t i = 0; | |
588 | ||
589 | if (len >= 2) { | |
590 | fct = *msg++; | |
591 | sub_fct = *msg++; | |
592 | len -= 2; | |
593 | ||
89adce76 L |
594 | while (fct != z80_messages[i].fct) { |
595 | if (z80_messages[i].fct == 0xff) { | |
596 | DBG_P(1, "do_message: Unknown function: %i, %i\n", | |
597 | fct, sub_fct); | |
598 | return; /* TODO: unknown message # */ | |
599 | } | |
8a7decea | 600 | |
72f58822 | 601 | ++i; |
72f58822 L |
602 | } |
603 | ||
604 | while (fct == z80_messages[i].fct) { | |
8a7decea | 605 | if (sub_fct >= z80_messages[i].sub_min && |
89adce76 | 606 | sub_fct <= z80_messages[i].sub_max ) |
72f58822 L |
607 | break; |
608 | ++i; | |
609 | } | |
610 | ||
611 | if (z80_messages[i].fct != fct) { | |
612 | DBG_P(1, "do_message: Unknown sub function: %i, %i\n", | |
613 | fct, sub_fct); | |
614 | return; /* TODO: unknown message sub# */ | |
615 | } | |
616 | ||
617 | (z80_messages[i].func)(sub_fct, len, msg); | |
618 | ||
619 | ||
620 | } else { | |
621 | /* TODO: error */ | |
622 | DBG_P(1, "do_message: to few arguments (%i); this shouldn't happen!\n", len); | |
623 | } | |
624 | } | |
625 | ||
626 | ||
627 | ||
628 | #define CTRBUF_LEN 256 | |
629 | ||
630 | void check_msg_fifo(void) | |
631 | { | |
632 | int ch; | |
633 | static int_fast8_t state; | |
634 | static int msglen,idx; | |
635 | static uint8_t buffer[CTRBUF_LEN]; | |
636 | ||
89adce76 | 637 | while ((ch = z80_memfifo_getc(fifo_msgin)) >= 0) { |
72f58822 L |
638 | switch (state) { |
639 | case 0: /* wait for start of message */ | |
3531528e | 640 | if (ch == 0xAE) { /* TODO: magic number */ |
72f58822 L |
641 | msglen = 0; |
642 | idx = 0; | |
643 | state = 1; | |
644 | } | |
645 | break; | |
646 | case 1: /* get msg len */ | |
647 | if (ch > 0 && ch <= CTRBUF_LEN) { | |
648 | msglen = ch; | |
649 | state = 2; | |
650 | } else | |
651 | state = 0; | |
652 | break; | |
653 | case 2: /* get message */ | |
654 | buffer[idx++] = ch; | |
89adce76 L |
655 | if (idx == msglen) { |
656 | do_message(msglen, buffer); | |
657 | state = 0; | |
658 | } | |
659 | break; | |
660 | } | |
661 | } | |
662 | } | |
663 | ||
664 | ||
665 | int msg_handling(int state) | |
666 | { | |
50939dec | 667 | bool pending; |
8a7decea L |
668 | |
669 | ATOMIC_BLOCK(ATOMIC_FORCEON) { | |
89adce76 L |
670 | pending = (Stat & S_MSG_PENDING) != 0; |
671 | Stat &= ~S_MSG_PENDING; | |
672 | } | |
8a7decea | 673 | |
89adce76 | 674 | if (pending) { |
215ec4b2 L |
675 | uint8_t init_request; |
676 | z80_bus_cmd(Request); | |
677 | init_request = z80_read(0x43); | |
678 | z80_bus_cmd(Release); | |
679 | if ( init_request != 0) { | |
8bbf185e | 680 | /* Get address of fifo 0 */ |
89adce76 | 681 | z80_bus_cmd(Request); |
8bbf185e L |
682 | uint32_t fifo_addr = z80_read(0x40) + |
683 | ((uint16_t) z80_read(0x40+1) << 8) + | |
684 | ((uint32_t) z80_read(0x40+2) << 16); | |
215ec4b2 L |
685 | z80_write(0x43, 0); |
686 | z80_bus_cmd(Release); | |
687 | ||
688 | if (fifo_addr != 0) { | |
689 | z80_memfifo_init(fifo_msgin, fifo_addr); | |
690 | state = 1; | |
691 | } else | |
692 | state = 0; | |
693 | ||
694 | } else { | |
89adce76 | 695 | check_msg_fifo(); |
72f58822 L |
696 | } |
697 | } | |
698 | ||
89adce76 L |
699 | return state; |
700 | } | |
89adce76 L |
701 | |
702 | ||
703 | static int handle_msg_handling; | |
704 | ||
705 | void setup_z180_serv(void) | |
706 | { | |
8a7decea | 707 | |
89adce76 | 708 | handle_msg_handling = bg_register(msg_handling, 0); |
393b1897 | 709 | handle_cpm_drv_to = bg_register(cpm_drv_to, 0); |
72f58822 L |
710 | } |
711 | ||
89adce76 L |
712 | void restart_z180_serv(void) |
713 | { | |
714 | z80_bus_cmd(Request); | |
215ec4b2 | 715 | z80_memset(0x40, 0, 4); |
89adce76 | 716 | z80_bus_cmd(Release); |
8a7decea L |
717 | |
718 | for (int i = 0; i < NUM_FIFOS; i++) | |
719 | z80_memfifo_init(i, 0); | |
89adce76 | 720 | bg_setstat(handle_msg_handling, 0); |
5f7f3586 | 721 | |
89adce76 | 722 | } |
72f58822 | 723 | |
845cbdbd | 724 | #if 0 |
72f58822 L |
725 | /*--------------------------------------------------------------------------*/ |
726 | ||
72f58822 L |
727 | const FLASH uint8_t iniprog[] = { |
728 | 0xAF, // xor a | |
729 | 0xED, 0x39, 0x36, // out0 (rcr),a ;disable DRAM refresh | |
730 | 0x3E, 0x30, // ld a,030h | |
731 | 0xED, 0x39, 0x32 //out0 (dcntl),a ;0 mem, max i/0 wait states | |
732 | }; | |
733 | ||
734 | const FLASH uint8_t sertest[] = { | |
735 | 0xAF, // xor a | |
736 | 0xED, 0x39, 0x36, // out0 (rcr),a ;disable DRAM refresh | |
737 | 0x3E, 0x30, // ld a,030h | |
738 | 0xED, 0x39, 0x32, // out0 (dcntl),a ;0 mem, max i/0 wait states | |
739 | 0x3E, 0x80, // ld a,M_MPBT ;no MP, PS=10, DR=16, SS=0 | |
740 | 0xED, 0x39, 0x03, // out0 (cntlb1),a | |
741 | 0x3E, 0x64, // ld a,M_RE + M_TE + M_MOD2 ; | |
742 | 0xED, 0x39, 0x01, // out0 (cntla1),a | |
743 | 0x3E, 0x00, // ld a,0 | |
744 | 0xED, 0x39, 0x05, // out0 (stat1),a ;Enable rx interrupts | |
745 | 0xED, 0x38, 0x05, //l0:in0 a,(stat1) | |
746 | 0xE6, 0x80, // and 80h | |
747 | 0x28, 0xF9, // jr z,l0 | |
748 | 0xED, 0x00, 0x09, // in0 b,(rdr1) | |
749 | 0xED, 0x38, 0x05, //l1:in0 a,(stat1) | |
750 | 0xE6, 0x02, // and 02h | |
751 | 0x28, 0xF9, // jr z,l1 | |
752 | 0xED, 0x01, 0x07, // out0 (tdr1),b | |
753 | 0x18, 0xEA, // jr l0 | |
754 | }; | |
755 | ||
756 | const FLASH uint8_t test1[] = { | |
757 | 0xAF, // xor a | |
758 | 0xED, 0x39, 0x36, // out0 (rcr),a ;disable DRAM refresh | |
759 | 0x3E, 0x30, // ld a,030h | |
760 | 0xED, 0x39, 0x32, // out0 (dcntl),a ;0 mem, max i/0 wait states | |
761 | 0x21, 0x1E, 0x00, // ld hl,dmclrt ;load DMA registers | |
762 | 0x06, 0x08, // ld b,dmct_e-dmclrt | |
763 | 0x0E, 0x20, // ld c,sar0l | |
8a7decea | 764 | 0xED, 0x93, // otimr |
72f58822 L |
765 | 0x3E, 0xC3, // ld a,0c3h ;dst +1, src +1, burst |
766 | 0xED, 0x39, 0x31, // out0 (dmode),a ; | |
8a7decea | 767 | 0x3E, 0x62, // ld a,062h ;enable dma0, |
72f58822 L |
768 | 0xED, 0x39, 0x30, //cl_1: out0 (dstat),a ;copy 64k |
769 | 0x18, 0xFB, // jr cl_1 ; | |
8a7decea | 770 | 0x00, 0x00, //dmclrt: dw 0 ;src (inc) |
72f58822 L |
771 | 0x00, // db 0 ;src |
772 | 0x00, 0x00, // dw 0 ;dst (inc), | |
773 | 0x00, // db 0 ;dst | |
774 | 0x00, 0x00, // dw 0 ;count (64k) | |
775 | }; | |
845cbdbd | 776 | #endif |