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Commit | Line | Data |
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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" |
89adce76 | 9 | #include <util/atomic.h> |
72f58822 | 10 | |
1aed7fd5 | 11 | #include "config.h" |
89adce76 | 12 | #include "background.h" |
5f7f3586 L |
13 | #include "env.h" |
14 | #include "ff.h" | |
72f58822 L |
15 | #include "serial.h" |
16 | #include "z80-if.h" | |
889202c4 | 17 | #include "debug.h" |
5f7f3586 | 18 | #include "print-utils.h" |
daacc6f9 | 19 | #include "timer.h" |
845cbdbd L |
20 | #include "time.h" |
21 | #include "bcd.h" | |
22 | #include "rtc.h" | |
7d60b20b | 23 | |
2ca8d8c7 | 24 | #define DEBUG_CPM_SDIO 0 /* set to 1 to debug */ |
7d60b20b L |
25 | |
26 | #define debug_cpmsd(fmt, args...) \ | |
27 | debug_cond(DEBUG_CPM_SDIO, fmt, ##args) | |
28 | ||
29 | ||
72f58822 L |
30 | /*--------------------------------------------------------------------------*/ |
31 | ||
32 | struct msg_item { | |
33 | uint8_t fct; | |
34 | uint8_t sub_min, sub_max; | |
35 | void (*func)(uint8_t, int, uint8_t *); | |
36 | }; | |
37 | ||
38 | uint32_t msg_to_addr(uint8_t *msg) | |
39 | { | |
40 | union { | |
41 | uint32_t as32; | |
42 | uint8_t as8[4]; | |
43 | } addr; | |
44 | ||
45 | addr.as8[0] = msg[0]; | |
46 | addr.as8[1] = msg[1]; | |
47 | addr.as8[2] = msg[2]; | |
48 | addr.as8[3] = 0; | |
49 | ||
50 | return addr.as32; | |
51 | } | |
52 | ||
72f58822 | 53 | |
1a2460dc L |
54 | static int msg_xmit_header(uint8_t func, uint8_t subf, int len) |
55 | { | |
56 | z80_memfifo_putc(fifo_msgout, 0xAE); | |
57 | z80_memfifo_putc(fifo_msgout, len+2); | |
58 | z80_memfifo_putc(fifo_msgout, func); | |
59 | z80_memfifo_putc(fifo_msgout, subf); | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
64 | int msg_xmit(uint8_t func, uint8_t subf, int len, uint8_t *msg) | |
65 | { | |
66 | msg_xmit_header(func, subf, len); | |
67 | while (len--) | |
68 | z80_memfifo_putc(fifo_msgout, *msg++); | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
72f58822 L |
73 | void do_msg_ini_memfifo(uint8_t subf, int len, uint8_t * msg) |
74 | { | |
75 | (void)len; | |
76 | ||
89adce76 | 77 | z80_memfifo_init(subf, msg_to_addr(msg)); |
72f58822 L |
78 | } |
79 | ||
80 | ||
81 | void do_msg_char_out(uint8_t subf, int len, uint8_t * msg) | |
82 | { | |
83 | (void)subf; | |
84 | ||
85 | while (len--) | |
86 | putchar(*msg++); | |
87 | } | |
88 | ||
1a2460dc L |
89 | /* echo message */ |
90 | void do_msg_echo(uint8_t subf, int len, uint8_t * msg) | |
91 | { | |
92 | (void)subf; | |
93 | ||
94 | /* send re-echo */ | |
95 | msg_xmit(1, 3, len, msg); | |
96 | } | |
97 | ||
8590a76b L |
98 | /* get timer */ |
99 | void do_msg_get_timer(uint8_t subf, int len, uint8_t * msg) | |
100 | { | |
a8eb521f | 101 | uint32_t time_ms = (len >= 4) ? *(uint32_t *) msg : 0; |
8590a76b | 102 | |
a8eb521f | 103 | time_ms = get_timer(time_ms); |
8590a76b L |
104 | msg_xmit(3, subf, sizeof(time_ms), (uint8_t *) &time_ms); |
105 | } | |
106 | ||
5f7f3586 L |
107 | /* ---------------------------------------------------------------------------*/ |
108 | ||
845cbdbd L |
109 | #define CPM_DAY_OFFSET ((1978-1900) * 365 + 19) /* 19 leap years */ |
110 | ||
111 | /* | |
112 | * Convert CP/M time stamp to a broken-down time structure | |
113 | * | |
114 | */ | |
115 | int mk_date_time (int len, uint8_t *msg, struct tm *tmp) | |
116 | { | |
117 | time_t stamp; | |
118 | ||
119 | if (len != 5) | |
120 | return -1; | |
121 | ||
122 | /* days since 2000-01-01 */ | |
123 | long days = msg[3] + (msg[4] << 8) - 8036; | |
124 | ||
125 | if (days < 0) | |
126 | return -1; | |
127 | ||
128 | stamp = days * ONE_DAY; | |
129 | stamp += bcd2bin(msg[0]); | |
130 | stamp += bcd2bin(msg[1]) * 60 ; | |
8d0fad4c | 131 | stamp += bcd2bin(msg[2]) * 3600L; |
845cbdbd L |
132 | gmtime_r(&stamp, tmp); |
133 | return 0; | |
134 | } | |
135 | ||
136 | void mk_cpm_time(struct tm *tmp, uint8_t cpm_time[5]) | |
137 | { | |
138 | uint16_t days = 1; | |
139 | uint_fast8_t leap=2; | |
140 | ||
141 | for (int year=78; year < tmp->tm_year; year++) { | |
142 | days = days + 365 + (leap == 0); | |
143 | leap = (leap+1)%4; | |
144 | } | |
145 | days += tmp->tm_yday; | |
146 | ||
147 | cpm_time[0] = bin2bcd(tmp->tm_sec); | |
148 | cpm_time[1] = bin2bcd(tmp->tm_min); | |
149 | cpm_time[2] = bin2bcd(tmp->tm_hour); | |
150 | cpm_time[3] = days; | |
151 | cpm_time[4] = days >> 8; | |
845cbdbd L |
152 | } |
153 | ||
154 | /* get/set cp/m time */ | |
155 | void do_msg_get_set_time(uint8_t subf, int len, uint8_t * msg) | |
156 | { | |
157 | struct tm t; | |
158 | uint8_t cpm_time[5]; | |
159 | int rc; | |
160 | ||
161 | memset(cpm_time, 0, ARRAY_SIZE(cpm_time)); | |
162 | ||
163 | switch (subf) { | |
164 | case 3: /* set date & time */ | |
165 | /* initialize t with current time */ | |
166 | rc = rtc_get (&t); | |
167 | ||
85046f8c | 168 | if (rc >= 0) { |
845cbdbd L |
169 | /* insert new date & time */ |
170 | if (mk_date_time (len, msg, &t) != 0) { | |
171 | my_puts_P(PSTR("## set_time: Bad date format\n")); | |
172 | break; | |
173 | } | |
174 | ||
175 | time_t time; | |
176 | time = mk_gmtime(&t); | |
177 | gmtime_r(&time, &t); | |
178 | ||
179 | /* and write to RTC */ | |
180 | rc = rtc_set (&t); | |
181 | if(rc) | |
182 | my_puts_P(PSTR("## set_time: Set date failed\n")); | |
183 | } else { | |
184 | my_puts_P(PSTR("## set_time: Get date failed\n")); | |
185 | } | |
186 | /* FALL TROUGH */ | |
187 | case 2: /* get date & time */ | |
188 | rc = rtc_get (&t); | |
85046f8c L |
189 | if (rc >= 0) { |
190 | time_t time; | |
191 | time = mk_gmtime(&t); | |
192 | //mktime(&t); | |
193 | gmtime_r(&time, &t); | |
845cbdbd | 194 | |
85046f8c L |
195 | mk_cpm_time(&t, cpm_time); |
196 | } else { | |
845cbdbd | 197 | my_puts_P(PSTR("## get_time: Get date failed\n")); |
845cbdbd | 198 | } |
845cbdbd L |
199 | break; |
200 | } | |
201 | ||
202 | msg_xmit(3, subf, sizeof(cpm_time), cpm_time); | |
203 | } | |
204 | ||
205 | /* ---------------------------------------------------------------------------*/ | |
206 | ||
78c90027 | 207 | static uint8_t drv; |
1aed7fd5 L |
208 | static uint8_t disk_buffer[CONFIG_CPM_BLOCK_SIZE]; |
209 | static struct cpm_drive_s drv_table[CONFIG_CPM_MAX_DRIVE]; | |
393b1897 L |
210 | static int handle_cpm_drv_to; |
211 | ||
78c90027 | 212 | typedef enum {SINGLE, START, MIDDLE, END} dbgmsg_t; |
393b1897 | 213 | |
78c90027 | 214 | void drv_debug(dbgmsg_t phase, const FLASH char *const fmt, ...) \ |
9461ecf3 L |
215 | { |
216 | struct cpm_drive_s *dp = &drv_table[drv]; | |
217 | ||
218 | if (dp->opt & DRV_OPT_DEBUG) { | |
219 | ||
220 | va_list ap; | |
78c90027 | 221 | va_start (ap, fmt); |
9461ecf3 | 222 | |
78c90027 L |
223 | if (phase == SINGLE || phase == START) |
224 | printf_P(PSTR("# %7lu dsk%d: "), get_timer(0), drv); | |
9461ecf3 | 225 | |
9461ecf3 | 226 | vfprintf_P (stdout, fmt, ap); |
9461ecf3 | 227 | |
78c90027 L |
228 | if (phase == SINGLE || phase == END) |
229 | putc('\n', stdout); | |
230 | ||
231 | va_end (ap); | |
9461ecf3 L |
232 | } |
233 | } | |
234 | ||
cb4fb1ed L |
235 | int drv_list(void) |
236 | { | |
237 | for (uint8_t i = 0; i < CONFIG_CPM_MAX_DRIVE; i++) { | |
238 | struct cpm_drive_s * p = &drv_table[i]; | |
239 | if (p->img_name) { | |
209025e8 L |
240 | printf_P(PSTR(" dsk%d: %2S %3S attached to %s\n"), i, |
241 | p->opt&DRV_OPT_RO ? PSTR("RO") : PSTR("RW"), | |
242 | p->opt&DRV_OPT_DEBUG ? PSTR("DBG") : PSTR(""), | |
cb4fb1ed L |
243 | p->img_name); |
244 | } | |
245 | } | |
246 | return 0; | |
247 | } | |
248 | ||
78c90027 | 249 | int drv_detach(uint8_t unit) |
cb4fb1ed | 250 | { |
78c90027 | 251 | drv = unit; |
cb4fb1ed L |
252 | if (drv < CONFIG_CPM_MAX_DRIVE) { |
253 | struct cpm_drive_s *p = &drv_table[drv]; | |
254 | ||
78c90027 | 255 | drv_debug(SINGLE, PSTR("detach from '%s'"), p->img_name ? p->img_name : "-"); |
cb4fb1ed L |
256 | |
257 | if (p->img_name) { | |
258 | f_close(&p->fd); | |
cb4fb1ed | 259 | free(p->img_name); |
4122fe90 L |
260 | p->opt = 0; |
261 | p->flags &= ~DRV_FLG_DIRTY; | |
cb4fb1ed | 262 | p->img_name = NULL; |
e34ae619 | 263 | |
3b841cea | 264 | uint32_t scb = getenv_ulong(PSTR(ENV_CPM3_SCB), 16, 0); |
e34ae619 L |
265 | if (scb && (z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
266 | z80_write(scb + 0xf0, 0xff); | |
267 | z80_write(p->dph + 11, 0xff); | |
268 | z80_bus_cmd(Release); | |
269 | } | |
cb4fb1ed L |
270 | } |
271 | } | |
272 | return 0; | |
273 | } | |
274 | ||
275 | static int drv_find_file_attached(const char *fn) | |
276 | { | |
277 | for (uint8_t i = 0; i < CONFIG_CPM_MAX_DRIVE; i++) { | |
278 | struct cpm_drive_s *p = &drv_table[i]; | |
279 | if (p->img_name && !strcmp(fn, p->img_name)) { | |
280 | return i; | |
281 | } | |
282 | } | |
283 | return -1; | |
284 | } | |
285 | ||
78c90027 | 286 | int drv_attach(uint8_t unit, const char *filename, drv_opt_t options) |
cb4fb1ed L |
287 | { |
288 | int res; | |
289 | ||
78c90027 | 290 | drv = unit; |
cb4fb1ed | 291 | if (drv >= CONFIG_CPM_MAX_DRIVE) |
5e8ac5e0 | 292 | return EATRANGE; |
cb4fb1ed L |
293 | |
294 | struct cpm_drive_s *p = &drv_table[drv]; | |
295 | ||
296 | if (options & DRV_OPT_REATTATCH) { | |
297 | if (filename) { | |
5e8ac5e0 | 298 | return EUNEXPARG; |
cb4fb1ed L |
299 | } |
300 | ||
301 | if (!p->img_name) { | |
5e8ac5e0 | 302 | return EATNOT; |
cb4fb1ed L |
303 | } |
304 | ||
9baecc6b L |
305 | /* change options */ |
306 | if ((p->opt ^ options) & DRV_OPT_RO) { | |
307 | f_close(&p->fd); | |
308 | res = f_open(&p->fd, p->img_name, | |
309 | FA_READ | (options&DRV_OPT_RO ? 0 : FA_WRITE)); | |
310 | } | |
cb4fb1ed | 311 | |
9baecc6b | 312 | p->opt = options & ~DRV_OPT_REATTATCH; |
cb4fb1ed L |
313 | |
314 | } else { | |
315 | ||
316 | if (p->img_name) | |
5e8ac5e0 | 317 | return EATALRDY; |
cb4fb1ed | 318 | if (drv_find_file_attached(filename) >= 0) |
5e8ac5e0 | 319 | return EATOTHER; |
cb4fb1ed | 320 | |
4122fe90 | 321 | p->opt = options; |
cb4fb1ed L |
322 | |
323 | /* new attachment */ | |
324 | ||
325 | if ((p->img_name = strdup(filename)) == NULL) | |
5e8ac5e0 | 326 | return ENOMEM; |
cb4fb1ed L |
327 | |
328 | res = f_open(&p->fd, p->img_name, | |
9baecc6b | 329 | FA_READ | (options&DRV_OPT_RO ? 0 : FA_WRITE)); |
cb4fb1ed L |
330 | |
331 | if (!res && f_size(&p->fd) < CONFIG_CPM_DISKSIZE) { | |
9baecc6b | 332 | #if 0 |
cb4fb1ed | 333 | unsigned int bw; |
cb4fb1ed L |
334 | debug_cpmsd(" expanding image file from %ld to %ld\n", |
335 | f_size(&p->fd), CONFIG_CPM_DISKSIZE); | |
336 | ||
337 | res = f_lseek(&p->fd, CONFIG_CPM_DISKSIZE-CONFIG_CPM_BLOCK_SIZE); | |
338 | if (!res) { | |
339 | memset(disk_buffer, 0xe5, CONFIG_CPM_BLOCK_SIZE); | |
340 | res = f_write(&p->fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &bw); | |
341 | if (res || bw < CONFIG_CPM_BLOCK_SIZE) { | |
342 | debug_cpmsd(" failed! res: %d, bytes written: %u\n", res, bw); | |
343 | } | |
4122fe90 | 344 | p->flags |= DRV_FLG_DIRTY; |
cb4fb1ed L |
345 | bg_setstat(handle_cpm_drv_to, 1); |
346 | } | |
9baecc6b | 347 | #else |
78c90027 | 348 | drv_debug(SINGLE, PSTR("wrong image file size: %ld, should be %ld"), |
9baecc6b L |
349 | f_size(&p->fd), CONFIG_CPM_DISKSIZE); |
350 | res = 64; | |
351 | #endif | |
cb4fb1ed L |
352 | } |
353 | if (res) { | |
354 | drv_detach(drv); | |
5e8ac5e0 | 355 | return EATOPEN; |
cb4fb1ed L |
356 | } |
357 | } | |
358 | ||
5e8ac5e0 | 359 | return ESUCCESS; |
cb4fb1ed L |
360 | } |
361 | ||
362 | ||
393b1897 L |
363 | int cpm_drv_to(int state) |
364 | { | |
365 | static uint32_t ts; | |
366 | ||
367 | switch(state) { | |
368 | case 0: | |
369 | break; | |
370 | ||
371 | case 1: | |
372 | ts = get_timer(0); | |
373 | state = 2; | |
374 | break; | |
375 | ||
376 | case 2: | |
377 | if (get_timer(ts) > 1000) { | |
1aed7fd5 | 378 | for (uint_fast8_t i=0; i < CONFIG_CPM_MAX_DRIVE; i++) { |
4122fe90 | 379 | if (drv_table[i].flags & DRV_FLG_DIRTY) { |
4122fe90 | 380 | drv_table[i].flags &= ~DRV_FLG_DIRTY; |
9461ecf3 | 381 | f_sync(&drv_table[i].fd); |
78c90027 L |
382 | drv = i; |
383 | drv_debug(SINGLE, PSTR("f_sync")); | |
393b1897 L |
384 | } |
385 | } | |
386 | state = 0; | |
387 | } | |
388 | } | |
389 | return state; | |
390 | } | |
391 | ||
78c90027 L |
392 | static const FLASH char * const FLASH rc_messages[] = { |
393 | FSTR("OK"), | |
394 | FSTR("Internal error: wrong message len"), /* 01 */ | |
395 | FSTR("Invalid relative drive #"), /* 02 */ | |
396 | FSTR("Bus timeout"), /* 03 */ | |
397 | FSTR("Access byond disk size"), /* 04 */ | |
398 | FSTR("Write protect"), /* 05 */ | |
399 | FSTR("No media"), /* 06 */ | |
910e7206 | 400 | FSTR("R/W address == 0 !!!!"), /* 07 */ |
78c90027 | 401 | }; |
393b1897 L |
402 | |
403 | void msg_cpm_result(uint8_t subf, uint8_t rc, int res) | |
404 | { | |
405 | uint8_t result_msg[3]; | |
406 | ||
407 | if (res) | |
408 | rc |= 0x80; | |
409 | ||
410 | result_msg[0] = rc; | |
411 | result_msg[1] = res; | |
412 | result_msg[2] = res >> 8; | |
413 | ||
393b1897 | 414 | msg_xmit(2, subf, sizeof(result_msg), result_msg); |
78c90027 | 415 | |
a4f40a90 | 416 | if (rc) { |
f1e16f88 | 417 | #if defined(GCC_BUG_61443) |
a4f40a90 L |
418 | char msg[40]; |
419 | strncpy_P(msg, rc_messages[rc & 0x7f], sizeof msg -1); | |
420 | drv_debug(END, PSTR(" rc: %.02x/%d, '%s'"), | |
421 | rc, res, msg); | |
422 | #else | |
78c90027 L |
423 | drv_debug(END, PSTR(" rc: %.02x/%d, '%S'"), |
424 | rc, res, rc_messages[rc & 0x7f]); | |
a4f40a90 L |
425 | #endif |
426 | } else | |
78c90027 L |
427 | drv_debug(END, PSTR("")); |
428 | ||
393b1897 | 429 | } |
5f7f3586 L |
430 | |
431 | /* | |
432 | db 2 ; disk command | |
433 | ds 1 ; subcommand (login/read/write) | |
434 | ds 1 ; @adrv (8 bits) +0 | |
435 | ds 1 ; @rdrv (8 bits) +1 | |
436 | ds 3 ; @xdph (24 bits) +2 | |
437 | */ | |
438 | ||
439 | void do_msg_cpm_login(uint8_t subf, int len, uint8_t * msg) | |
440 | { | |
9baecc6b | 441 | struct cpm_drive_s *dp; |
4122fe90 | 442 | FRESULT res = 0; |
5f7f3586 L |
443 | |
444 | (void)subf; | |
445 | ||
78c90027 L |
446 | /* Get relative drive number */ |
447 | drv = msg[1]; | |
448 | drv_debug(START, PSTR("login")); | |
449 | ||
afc7c4b4 | 450 | if (len != 5) { |
393b1897 | 451 | return msg_cpm_result(subf, 0x01, res); |
5f7f3586 L |
452 | } |
453 | ||
cb4fb1ed | 454 | if ( drv >= CONFIG_CPM_MAX_DRIVE) { |
78c90027 | 455 | /* invalid relative drive number */ |
393b1897 | 456 | return msg_cpm_result(subf, 0x02, res); |
5f7f3586 L |
457 | } |
458 | ||
9baecc6b L |
459 | dp = &drv_table[drv]; |
460 | dp->flags &= ~DRV_FLG_OPEN; | |
461 | dp->dph = ((uint32_t)msg[4] << 16) + ((uint16_t)msg[3] << 8) + msg[2]; | |
cb4fb1ed | 462 | |
9baecc6b | 463 | if (dp->img_name == NULL) { |
4122fe90 | 464 | /* no file attached */ |
78c90027 | 465 | return msg_cpm_result(subf, 0x06, res); |
5f7f3586 L |
466 | } |
467 | ||
019dc5f9 L |
468 | f_close(&dp->fd); |
469 | res = f_open(&dp->fd, dp->img_name, | |
470 | FA_READ | (dp->opt&DRV_OPT_RO ? 0 : FA_WRITE)); | |
471 | ||
9baecc6b | 472 | dp->flags |= DRV_FLG_OPEN; |
afc7c4b4 | 473 | |
5f7f3586 | 474 | /* send result*/ |
393b1897 | 475 | msg_cpm_result(subf, 0x00, res); |
5f7f3586 L |
476 | } |
477 | ||
478 | ||
479 | /* | |
480 | db 2 ; disk command | |
481 | ds 1 ; subcommand (login/read/write) | |
daacc6f9 L |
482 | ds 1 ; @adrv (8 bits) +0 |
483 | ds 1 ; @rdrv (8 bits) +1 | |
484 | ds 2 ; @trk (16 bits) +2 | |
485 | ds 2 ; @sect(16 bits) +4 | |
486 | ds 1 ; @cnt (8 bits) +6 | |
5f7f3586 L |
487 | ds 3 ; phys. transfer addr +7 |
488 | */ | |
489 | ||
daacc6f9 L |
490 | #define ADRV 0 |
491 | #define RDRV 1 | |
492 | #define TRK 2 | |
493 | #define SEC 4 | |
494 | #define CNT 6 | |
495 | #define ADDR 7 | |
496 | ||
5f7f3586 L |
497 | void do_msg_cpm_rw(uint8_t subf, int len, uint8_t * msg) |
498 | { | |
9baecc6b | 499 | struct cpm_drive_s *dp; |
5f7f3586 L |
500 | uint32_t addr; |
501 | uint32_t pos; | |
9461ecf3 L |
502 | uint16_t track; |
503 | uint16_t sec; | |
7d60b20b | 504 | uint8_t secs; |
9baecc6b | 505 | bool dowrite; |
5f7f3586 L |
506 | FRESULT res = 0; |
507 | uint8_t rc = 0; | |
508 | bool buserr = 0; | |
5f7f3586 | 509 | |
78c90027 L |
510 | drv = msg[RDRV]; |
511 | dowrite = (subf == 2); | |
512 | ||
513 | drv_debug(START, PSTR("%2S"), dowrite ? PSTR("W ") : PSTR(" R")); | |
514 | ||
afc7c4b4 | 515 | if (len != 10) { |
393b1897 | 516 | return msg_cpm_result(subf, 0x01, res); |
5f7f3586 | 517 | } |
1aed7fd5 | 518 | if ( drv>= CONFIG_CPM_MAX_DRIVE) { |
393b1897 | 519 | return msg_cpm_result(subf, 0x02, res); |
5f7f3586 L |
520 | } |
521 | ||
9baecc6b | 522 | dp = &drv_table[drv]; |
9461ecf3 L |
523 | track = (uint16_t)(msg[TRK+1] << 8) + msg[TRK]; |
524 | sec = (uint16_t)(msg[SEC+1] << 8) + msg[SEC]; | |
7d60b20b | 525 | secs = msg[CNT]; |
daacc6f9 | 526 | addr = ((uint32_t)msg[ADDR+2] << 16) + ((uint16_t)msg[ADDR+1] << 8) + msg[ADDR]; |
5f7f3586 | 527 | |
78c90027 L |
528 | if (dp->img_name == NULL) { |
529 | /* no media */ | |
530 | return msg_cpm_result(subf, 0x06, res); | |
531 | } | |
5f7f3586 | 532 | |
daacc6f9 | 533 | /* TODO: tracks per sector from dpb */ |
9461ecf3 | 534 | pos = (track * 8UL + sec) * CONFIG_CPM_BLOCK_SIZE; |
5f7f3586 | 535 | |
78c90027 L |
536 | drv_debug(MIDDLE, PSTR(" T:%4d, S:%2d, cnt:%2d, lba: %.8lx, addr: %.5lx"), |
537 | track, sec, secs, pos, addr); | |
538 | ||
910e7206 L |
539 | if (addr == 0) { |
540 | return msg_cpm_result(subf, 0x07, res); | |
541 | } | |
542 | ||
78c90027 L |
543 | if (dowrite && dp->opt & DRV_OPT_RO) { |
544 | return msg_cpm_result(subf, 0x05, res); | |
545 | } | |
546 | ||
5f7f3586 | 547 | |
1aed7fd5 | 548 | if (pos + secs * CONFIG_CPM_BLOCK_SIZE > CONFIG_CPM_DISKSIZE) { |
78c90027 L |
549 | drv_debug(MIDDLE, PSTR(" access > DISKSIZE:%.8lx!"), |
550 | CONFIG_CPM_DISKSIZE); | |
1aed7fd5 L |
551 | return msg_cpm_result(subf, 0x04, res); |
552 | } | |
553 | ||
9baecc6b | 554 | res = f_lseek(&dp->fd, pos); |
1aed7fd5 | 555 | |
7d60b20b | 556 | while (!res && secs--) { |
8bbf185e | 557 | unsigned int brw; |
5f7f3586 L |
558 | if (dowrite) { |
559 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
560 | buserr = 1; | |
7d60b20b | 561 | break; |
5f7f3586 | 562 | } else { |
1aed7fd5 | 563 | z80_read_block(disk_buffer, addr, CONFIG_CPM_BLOCK_SIZE); |
5f7f3586 | 564 | z80_bus_cmd(Release); |
5f7f3586 | 565 | } |
9baecc6b | 566 | res = f_write(&dp->fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &brw); |
5f7f3586 | 567 | } else { |
9baecc6b | 568 | res = f_read(&dp->fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &brw); |
1aed7fd5 | 569 | if (res == FR_OK) { |
5f7f3586 L |
570 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
571 | buserr = 1; | |
7d60b20b | 572 | break; |
5f7f3586 | 573 | } else { |
afc7c4b4 | 574 | z80_write_block(disk_buffer, addr, CONFIG_CPM_BLOCK_SIZE); |
5f7f3586 L |
575 | z80_bus_cmd(Release); |
576 | } | |
577 | } | |
578 | } | |
1aed7fd5 | 579 | if (brw != CONFIG_CPM_BLOCK_SIZE) { |
78c90027 L |
580 | drv_debug(MIDDLE, PSTR(" short rd/wr: res: %d, brw: %u"), |
581 | res, brw); | |
afc7c4b4 | 582 | res = 64; |
5f7f3586 | 583 | } |
1aed7fd5 | 584 | addr += CONFIG_CPM_BLOCK_SIZE; |
5f7f3586 L |
585 | } |
586 | ||
393b1897 | 587 | if (dowrite && !res) { |
9baecc6b | 588 | dp->flags |= DRV_FLG_DIRTY; |
393b1897 L |
589 | bg_setstat(handle_cpm_drv_to, 1); |
590 | } | |
591 | ||
5f7f3586 | 592 | if (buserr) { |
78c90027 | 593 | /* Bus timeout. how can this happen? */ |
5f7f3586 L |
594 | rc = 0x03; |
595 | } | |
5f7f3586 L |
596 | |
597 | /* send result*/ | |
393b1897 | 598 | msg_cpm_result(subf, rc, res); |
5f7f3586 L |
599 | } |
600 | ||
72f58822 L |
601 | |
602 | const FLASH struct msg_item z80_messages[] = | |
603 | { | |
604 | { 0, /* fct nr. */ | |
89adce76 | 605 | 1, 3, /* sub fct nr. from, to */ |
72f58822 L |
606 | do_msg_ini_memfifo}, |
607 | { 1, | |
608 | 1, 1, | |
609 | do_msg_char_out}, | |
1a2460dc L |
610 | { 1, |
611 | 2, 2, | |
612 | do_msg_echo}, | |
5f7f3586 L |
613 | { 2, |
614 | 0, 0, | |
615 | do_msg_cpm_login}, | |
616 | { 2, | |
617 | 1, 2, | |
618 | do_msg_cpm_rw}, | |
8590a76b L |
619 | { 3, |
620 | 1, 1, | |
621 | do_msg_get_timer}, | |
845cbdbd L |
622 | { 3, |
623 | 2, 3, /* 2: get, 3: set time and date */ | |
624 | do_msg_get_set_time}, | |
72f58822 L |
625 | { 0xff, /* end mark */ |
626 | 0, 0, | |
627 | 0}, | |
628 | ||
629 | }; | |
630 | ||
631 | ||
632 | ||
633 | ||
634 | void do_message(int len, uint8_t *msg) | |
635 | { | |
636 | uint8_t fct, sub_fct; | |
637 | int_fast8_t i = 0; | |
638 | ||
639 | if (len >= 2) { | |
640 | fct = *msg++; | |
641 | sub_fct = *msg++; | |
642 | len -= 2; | |
643 | ||
89adce76 L |
644 | while (fct != z80_messages[i].fct) { |
645 | if (z80_messages[i].fct == 0xff) { | |
646 | DBG_P(1, "do_message: Unknown function: %i, %i\n", | |
647 | fct, sub_fct); | |
648 | return; /* TODO: unknown message # */ | |
649 | } | |
8a7decea | 650 | |
72f58822 | 651 | ++i; |
72f58822 L |
652 | } |
653 | ||
654 | while (fct == z80_messages[i].fct) { | |
8a7decea | 655 | if (sub_fct >= z80_messages[i].sub_min && |
89adce76 | 656 | sub_fct <= z80_messages[i].sub_max ) |
72f58822 L |
657 | break; |
658 | ++i; | |
659 | } | |
660 | ||
661 | if (z80_messages[i].fct != fct) { | |
662 | DBG_P(1, "do_message: Unknown sub function: %i, %i\n", | |
663 | fct, sub_fct); | |
664 | return; /* TODO: unknown message sub# */ | |
665 | } | |
666 | ||
667 | (z80_messages[i].func)(sub_fct, len, msg); | |
668 | ||
669 | ||
670 | } else { | |
671 | /* TODO: error */ | |
672 | DBG_P(1, "do_message: to few arguments (%i); this shouldn't happen!\n", len); | |
673 | } | |
674 | } | |
675 | ||
676 | ||
677 | ||
678 | #define CTRBUF_LEN 256 | |
679 | ||
680 | void check_msg_fifo(void) | |
681 | { | |
682 | int ch; | |
683 | static int_fast8_t state; | |
684 | static int msglen,idx; | |
685 | static uint8_t buffer[CTRBUF_LEN]; | |
686 | ||
89adce76 | 687 | while ((ch = z80_memfifo_getc(fifo_msgin)) >= 0) { |
72f58822 L |
688 | switch (state) { |
689 | case 0: /* wait for start of message */ | |
3531528e | 690 | if (ch == 0xAE) { /* TODO: magic number */ |
72f58822 L |
691 | msglen = 0; |
692 | idx = 0; | |
693 | state = 1; | |
694 | } | |
695 | break; | |
696 | case 1: /* get msg len */ | |
697 | if (ch > 0 && ch <= CTRBUF_LEN) { | |
698 | msglen = ch; | |
699 | state = 2; | |
700 | } else | |
701 | state = 0; | |
702 | break; | |
703 | case 2: /* get message */ | |
704 | buffer[idx++] = ch; | |
89adce76 L |
705 | if (idx == msglen) { |
706 | do_message(msglen, buffer); | |
707 | state = 0; | |
708 | } | |
709 | break; | |
710 | } | |
711 | } | |
712 | } | |
713 | ||
714 | ||
715 | int msg_handling(int state) | |
716 | { | |
50939dec | 717 | bool pending; |
8a7decea L |
718 | |
719 | ATOMIC_BLOCK(ATOMIC_FORCEON) { | |
89adce76 L |
720 | pending = (Stat & S_MSG_PENDING) != 0; |
721 | Stat &= ~S_MSG_PENDING; | |
722 | } | |
8a7decea | 723 | |
89adce76 | 724 | if (pending) { |
215ec4b2 L |
725 | uint8_t init_request; |
726 | z80_bus_cmd(Request); | |
727 | init_request = z80_read(0x43); | |
728 | z80_bus_cmd(Release); | |
729 | if ( init_request != 0) { | |
8bbf185e | 730 | /* Get address of fifo 0 */ |
89adce76 | 731 | z80_bus_cmd(Request); |
8bbf185e L |
732 | uint32_t fifo_addr = z80_read(0x40) + |
733 | ((uint16_t) z80_read(0x40+1) << 8) + | |
734 | ((uint32_t) z80_read(0x40+2) << 16); | |
215ec4b2 L |
735 | z80_write(0x43, 0); |
736 | z80_bus_cmd(Release); | |
737 | ||
738 | if (fifo_addr != 0) { | |
739 | z80_memfifo_init(fifo_msgin, fifo_addr); | |
740 | state = 1; | |
741 | } else | |
742 | state = 0; | |
743 | ||
744 | } else { | |
89adce76 | 745 | check_msg_fifo(); |
72f58822 L |
746 | } |
747 | } | |
748 | ||
89adce76 L |
749 | return state; |
750 | } | |
89adce76 L |
751 | |
752 | ||
753 | static int handle_msg_handling; | |
754 | ||
755 | void setup_z180_serv(void) | |
756 | { | |
8a7decea | 757 | |
89adce76 | 758 | handle_msg_handling = bg_register(msg_handling, 0); |
393b1897 | 759 | handle_cpm_drv_to = bg_register(cpm_drv_to, 0); |
72f58822 L |
760 | } |
761 | ||
89adce76 L |
762 | void restart_z180_serv(void) |
763 | { | |
764 | z80_bus_cmd(Request); | |
215ec4b2 | 765 | z80_memset(0x40, 0, 4); |
89adce76 | 766 | z80_bus_cmd(Release); |
8a7decea L |
767 | |
768 | for (int i = 0; i < NUM_FIFOS; i++) | |
769 | z80_memfifo_init(i, 0); | |
89adce76 | 770 | bg_setstat(handle_msg_handling, 0); |
5f7f3586 | 771 | |
89adce76 | 772 | } |
72f58822 | 773 | |
845cbdbd | 774 | #if 0 |
72f58822 L |
775 | /*--------------------------------------------------------------------------*/ |
776 | ||
72f58822 L |
777 | const FLASH uint8_t iniprog[] = { |
778 | 0xAF, // xor a | |
779 | 0xED, 0x39, 0x36, // out0 (rcr),a ;disable DRAM refresh | |
780 | 0x3E, 0x30, // ld a,030h | |
781 | 0xED, 0x39, 0x32 //out0 (dcntl),a ;0 mem, max i/0 wait states | |
782 | }; | |
783 | ||
784 | const FLASH uint8_t sertest[] = { | |
785 | 0xAF, // xor a | |
786 | 0xED, 0x39, 0x36, // out0 (rcr),a ;disable DRAM refresh | |
787 | 0x3E, 0x30, // ld a,030h | |
788 | 0xED, 0x39, 0x32, // out0 (dcntl),a ;0 mem, max i/0 wait states | |
789 | 0x3E, 0x80, // ld a,M_MPBT ;no MP, PS=10, DR=16, SS=0 | |
790 | 0xED, 0x39, 0x03, // out0 (cntlb1),a | |
791 | 0x3E, 0x64, // ld a,M_RE + M_TE + M_MOD2 ; | |
792 | 0xED, 0x39, 0x01, // out0 (cntla1),a | |
793 | 0x3E, 0x00, // ld a,0 | |
794 | 0xED, 0x39, 0x05, // out0 (stat1),a ;Enable rx interrupts | |
795 | 0xED, 0x38, 0x05, //l0:in0 a,(stat1) | |
796 | 0xE6, 0x80, // and 80h | |
797 | 0x28, 0xF9, // jr z,l0 | |
798 | 0xED, 0x00, 0x09, // in0 b,(rdr1) | |
799 | 0xED, 0x38, 0x05, //l1:in0 a,(stat1) | |
800 | 0xE6, 0x02, // and 02h | |
801 | 0x28, 0xF9, // jr z,l1 | |
802 | 0xED, 0x01, 0x07, // out0 (tdr1),b | |
803 | 0x18, 0xEA, // jr l0 | |
804 | }; | |
805 | ||
806 | const FLASH uint8_t test1[] = { | |
807 | 0xAF, // xor a | |
808 | 0xED, 0x39, 0x36, // out0 (rcr),a ;disable DRAM refresh | |
809 | 0x3E, 0x30, // ld a,030h | |
810 | 0xED, 0x39, 0x32, // out0 (dcntl),a ;0 mem, max i/0 wait states | |
811 | 0x21, 0x1E, 0x00, // ld hl,dmclrt ;load DMA registers | |
812 | 0x06, 0x08, // ld b,dmct_e-dmclrt | |
813 | 0x0E, 0x20, // ld c,sar0l | |
8a7decea | 814 | 0xED, 0x93, // otimr |
72f58822 L |
815 | 0x3E, 0xC3, // ld a,0c3h ;dst +1, src +1, burst |
816 | 0xED, 0x39, 0x31, // out0 (dmode),a ; | |
8a7decea | 817 | 0x3E, 0x62, // ld a,062h ;enable dma0, |
72f58822 L |
818 | 0xED, 0x39, 0x30, //cl_1: out0 (dstat),a ;copy 64k |
819 | 0x18, 0xFB, // jr cl_1 ; | |
8a7decea | 820 | 0x00, 0x00, //dmclrt: dw 0 ;src (inc) |
72f58822 L |
821 | 0x00, // db 0 ;src |
822 | 0x00, 0x00, // dw 0 ;dst (inc), | |
823 | 0x00, // db 0 ;dst | |
824 | 0x00, 0x00, // dw 0 ;count (64k) | |
825 | }; | |
845cbdbd | 826 | #endif |