23 |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
24 |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
25 |
* SUCH DAMAGE. |
* SUCH DAMAGE. |
|
* |
|
26 |
* |
* |
27 |
* $Id: dev_wdc.c,v 1.37 2005/05/27 07:29:25 debug Exp $ |
* |
28 |
* |
* $Id: dev_wdc.c,v 1.44 2005/10/26 14:37:05 debug Exp $ |
29 |
* Standard IDE controller. |
* |
30 |
|
* Standard "wdc" IDE controller. |
31 |
*/ |
*/ |
32 |
|
|
33 |
#include <stdio.h> |
#include <stdio.h> |
34 |
#include <stdlib.h> |
#include <stdlib.h> |
35 |
#include <string.h> |
#include <string.h> |
36 |
|
|
|
#include "console.h" |
|
|
#include "cop0.h" |
|
37 |
#include "cpu.h" |
#include "cpu.h" |
38 |
#include "devices.h" |
#include "device.h" |
39 |
#include "diskimage.h" |
#include "diskimage.h" |
40 |
#include "machine.h" |
#include "machine.h" |
41 |
#include "memory.h" |
#include "memory.h" |
43 |
|
|
44 |
#include "wdcreg.h" |
#include "wdcreg.h" |
45 |
|
|
46 |
|
#define DEV_WDC_LENGTH 8 |
47 |
#define WDC_TICK_SHIFT 14 |
#define WDC_TICK_SHIFT 14 |
48 |
#define WDC_INBUF_SIZE (512*257) |
#define WDC_MAX_SECTORS 512 |
49 |
|
#define WDC_INBUF_SIZE (512*(WDC_MAX_SECTORS+1)) |
50 |
|
|
51 |
/* INT_DELAY=2 to be safe, 1 is faster but maybe buggy. */ |
/* |
52 |
|
* INT_DELAY: This is an old hack which only exists because (some versions of) |
53 |
|
* NetBSD for hpcmips have interrupt problems. These problems are probably not |
54 |
|
* specific to GXemul, but are also triggered on real hardware. |
55 |
|
* |
56 |
|
* See the following URL for more info: |
57 |
|
* http://mail-index.netbsd.org/port-hpcmips/2004/12/30/0003.html |
58 |
|
*/ |
59 |
#define INT_DELAY 1 |
#define INT_DELAY 1 |
60 |
|
|
61 |
extern int quiet_mode; |
extern int quiet_mode; |
62 |
|
|
63 |
/* #define debug fatal */ |
/* #define debug fatal */ |
|
/* #define DATA_DEBUG */ |
|
64 |
|
|
65 |
struct wdc_data { |
struct wdc_data { |
66 |
int irq_nr; |
int irq_nr; |
67 |
int base_drive; |
int base_drive; |
68 |
|
int data_debug; |
69 |
|
|
70 |
int delayed_interrupt; |
/* Cached values: */ |
71 |
|
int cyls[2]; |
72 |
|
int heads[2]; |
73 |
|
int sectors_per_track[2]; |
74 |
|
|
75 |
unsigned char identify_struct[512]; |
unsigned char identify_struct[512]; |
76 |
|
|
78 |
int inbuf_head; |
int inbuf_head; |
79 |
int inbuf_tail; |
int inbuf_tail; |
80 |
|
|
81 |
|
int delayed_interrupt; |
82 |
int write_in_progress; |
int write_in_progress; |
83 |
int write_count; |
int write_count; |
84 |
int64_t write_offset; |
int64_t write_offset; |
124 |
|
|
125 |
d->inbuf_head = (d->inbuf_head + 1) % WDC_INBUF_SIZE; |
d->inbuf_head = (d->inbuf_head + 1) % WDC_INBUF_SIZE; |
126 |
if (d->inbuf_head == d->inbuf_tail) |
if (d->inbuf_head == d->inbuf_tail) |
127 |
fatal("[ wdc_addtoinbuf(): WARNING! wdc inbuf overrun ]\n"); |
fatal("[ wdc_addtoinbuf(): WARNING! wdc inbuf overrun!" |
128 |
|
" Increase WDC_MAX_SECTORS. ]\n"); |
129 |
} |
} |
130 |
|
|
131 |
|
|
155 |
static void wdc_initialize_identify_struct(struct cpu *cpu, struct wdc_data *d) |
static void wdc_initialize_identify_struct(struct cpu *cpu, struct wdc_data *d) |
156 |
{ |
{ |
157 |
uint64_t total_size; |
uint64_t total_size; |
158 |
int cyls, heads, sectors_per_track; |
char namebuf[40]; |
159 |
|
|
160 |
total_size = diskimage_getsize(cpu->machine, d->drive + d->base_drive, |
total_size = diskimage_getsize(cpu->machine, d->drive + d->base_drive, |
161 |
DISKIMAGE_IDE); |
DISKIMAGE_IDE); |
162 |
|
|
|
diskimage_getchs(cpu->machine, d->drive + d->base_drive, |
|
|
DISKIMAGE_IDE, &cyls, &heads, §ors_per_track); |
|
|
|
|
163 |
memset(d->identify_struct, 0, sizeof(d->identify_struct)); |
memset(d->identify_struct, 0, sizeof(d->identify_struct)); |
164 |
|
|
165 |
/* Offsets are in 16-bit WORDS! High byte, then low. */ |
/* Offsets are in 16-bit WORDS! High byte, then low. */ |
169 |
d->identify_struct[2 * 0 + 1] = 1 << 6; |
d->identify_struct[2 * 0 + 1] = 1 << 6; |
170 |
|
|
171 |
/* 1: nr of cylinders */ |
/* 1: nr of cylinders */ |
172 |
d->identify_struct[2 * 1 + 0] = (cyls >> 8); |
d->identify_struct[2 * 1 + 0] = (d->cyls[d->drive] >> 8); |
173 |
d->identify_struct[2 * 1 + 1] = cyls & 255; |
d->identify_struct[2 * 1 + 1] = d->cyls[d->drive] & 255; |
174 |
|
|
175 |
/* 3: nr of heads */ |
/* 3: nr of heads */ |
176 |
d->identify_struct[2 * 3 + 0] = heads >> 8; |
d->identify_struct[2 * 3 + 0] = d->heads[d->drive] >> 8; |
177 |
d->identify_struct[2 * 3 + 1] = heads; |
d->identify_struct[2 * 3 + 1] = d->heads[d->drive]; |
178 |
|
|
179 |
/* 6: sectors per track */ |
/* 6: sectors per track */ |
180 |
d->identify_struct[2 * 6 + 0] = sectors_per_track >> 8; |
d->identify_struct[2 * 6 + 0] = d->sectors_per_track[d->drive] >> 8; |
181 |
d->identify_struct[2 * 6 + 1] = sectors_per_track; |
d->identify_struct[2 * 6 + 1] = d->sectors_per_track[d->drive]; |
182 |
|
|
183 |
/* 10-19: Serial number */ |
/* 10-19: Serial number */ |
184 |
memcpy(&d->identify_struct[2 * 10], "S/N 1234-5678 ", 20); |
memcpy(&d->identify_struct[2 * 10], "S/N 1234-5678 ", 20); |
187 |
memcpy(&d->identify_struct[2 * 23], "VER 1.0 ", 8); |
memcpy(&d->identify_struct[2 * 23], "VER 1.0 ", 8); |
188 |
|
|
189 |
/* 27-46: Model number */ |
/* 27-46: Model number */ |
190 |
memcpy(&d->identify_struct[2 * 27], |
if (diskimage_getname(cpu->machine, d->drive + d->base_drive, |
191 |
"Fake GXemul IDE disk ", 40); |
DISKIMAGE_IDE, namebuf, sizeof(namebuf))) { |
192 |
/* TODO: Use the diskimage's filename instead? */ |
int i; |
193 |
|
for (i=0; i<sizeof(namebuf); i++) |
194 |
|
if (namebuf[i] == 0) { |
195 |
|
for (; i<sizeof(namebuf); i++) |
196 |
|
namebuf[i] = ' '; |
197 |
|
break; |
198 |
|
} |
199 |
|
memcpy(&d->identify_struct[2 * 27], namebuf, 40); |
200 |
|
} else |
201 |
|
memcpy(&d->identify_struct[2 * 27], |
202 |
|
"Fake GXemul IDE disk ", 40); |
203 |
|
|
204 |
/* 47: max sectors per multitransfer */ |
/* 47: max sectors per multitransfer */ |
205 |
d->identify_struct[2 * 47 + 0] = 0x80; |
d->identify_struct[2 * 47 + 0] = 0x80; |
221 |
|
|
222 |
|
|
223 |
/* |
/* |
224 |
|
* wdc__read(): |
225 |
|
*/ |
226 |
|
void wdc__read(struct cpu *cpu, struct wdc_data *d) |
227 |
|
{ |
228 |
|
const int max_sectors_per_chunk = 64; |
229 |
|
unsigned char buf[512 * max_sectors_per_chunk]; |
230 |
|
int i, cyl = d->cyl_hi * 256+ d->cyl_lo; |
231 |
|
int count = d->seccnt? d->seccnt : 256; |
232 |
|
uint64_t offset = 512 * (d->sector - 1 |
233 |
|
+ d->head * d->sectors_per_track[d->drive] + |
234 |
|
d->heads[d->drive] * d->sectors_per_track[d->drive] * cyl); |
235 |
|
|
236 |
|
#if 0 |
237 |
|
/* LBA: */ |
238 |
|
if (d->lba) |
239 |
|
offset = 512 * (((d->head & 0xf) << 24) + (cyl << 8) |
240 |
|
+ d->sector); |
241 |
|
printf("WDC read from offset %lli\n", (long long)offset); |
242 |
|
#endif |
243 |
|
|
244 |
|
while (count > 0) { |
245 |
|
int to_read = count > max_sectors_per_chunk? |
246 |
|
max_sectors_per_chunk : count; |
247 |
|
|
248 |
|
/* TODO: result code from the read? */ |
249 |
|
|
250 |
|
if (d->inbuf_head + 512 * to_read <= WDC_INBUF_SIZE) { |
251 |
|
diskimage_access(cpu->machine, d->drive + d->base_drive, |
252 |
|
DISKIMAGE_IDE, 0, offset, |
253 |
|
d->inbuf + d->inbuf_head, 512 * to_read); |
254 |
|
d->inbuf_head += 512 * to_read; |
255 |
|
if (d->inbuf_head == WDC_INBUF_SIZE) |
256 |
|
d->inbuf_head = 0; |
257 |
|
} else { |
258 |
|
diskimage_access(cpu->machine, d->drive + d->base_drive, |
259 |
|
DISKIMAGE_IDE, 0, offset, buf, 512 * to_read); |
260 |
|
for (i=0; i<512 * to_read; i++) |
261 |
|
wdc_addtoinbuf(d, buf[i]); |
262 |
|
} |
263 |
|
|
264 |
|
offset += 512 * to_read; |
265 |
|
count -= to_read; |
266 |
|
} |
267 |
|
|
268 |
|
d->delayed_interrupt = INT_DELAY; |
269 |
|
} |
270 |
|
|
271 |
|
|
272 |
|
/* |
273 |
|
* wdc__write(): |
274 |
|
*/ |
275 |
|
void wdc__write(struct cpu *cpu, struct wdc_data *d) |
276 |
|
{ |
277 |
|
int cyl = d->cyl_hi * 256+ d->cyl_lo; |
278 |
|
int count = d->seccnt? d->seccnt : 256; |
279 |
|
uint64_t offset = 512 * (d->sector - 1 |
280 |
|
+ d->head * d->sectors_per_track[d->drive] + |
281 |
|
d->heads[d->drive] * d->sectors_per_track[d->drive] * cyl); |
282 |
|
#if 0 |
283 |
|
/* LBA: */ |
284 |
|
if (d->lba) |
285 |
|
offset = 512 * (((d->head & 0xf) << 24) + |
286 |
|
(cyl << 8) + d->sector); |
287 |
|
printf("WDC write to offset %lli\n", (long long)offset); |
288 |
|
#endif |
289 |
|
|
290 |
|
d->write_in_progress = 1; |
291 |
|
d->write_count = count; |
292 |
|
d->write_offset = offset; |
293 |
|
|
294 |
|
/* TODO: result code? */ |
295 |
|
} |
296 |
|
|
297 |
|
|
298 |
|
/* |
299 |
* status_byte(): |
* status_byte(): |
300 |
|
* |
301 |
|
* Return a reasonable status byte corresponding to the controller's current |
302 |
|
* state. |
303 |
*/ |
*/ |
304 |
static int status_byte(struct wdc_data *d, struct cpu *cpu) |
static int status_byte(struct wdc_data *d, struct cpu *cpu) |
305 |
{ |
{ |
306 |
int odata = 0; |
int odata = 0; |
307 |
|
|
308 |
|
/* |
309 |
|
* Modern versions of OpenBSD wants WDCS_DSC. (Thanks to Alexander |
310 |
|
* Yurchenko for noticing this.) |
311 |
|
*/ |
312 |
if (diskimage_exist(cpu->machine, d->drive + d->base_drive, |
if (diskimage_exist(cpu->machine, d->drive + d->base_drive, |
313 |
DISKIMAGE_IDE)) |
DISKIMAGE_IDE)) |
314 |
odata |= WDCS_DRDY; |
odata |= WDCS_DRDY | WDCS_DSC; |
315 |
if (d->inbuf_head != d->inbuf_tail) |
if (d->inbuf_head != d->inbuf_tail) |
316 |
odata |= WDCS_DRQ; |
odata |= WDCS_DRQ; |
317 |
if (d->write_in_progress) |
if (d->write_in_progress) |
319 |
if (d->error) |
if (d->error) |
320 |
odata |= WDCS_ERR; |
odata |= WDCS_ERR; |
321 |
|
|
|
#if 0 |
|
|
/* |
|
|
* TODO: Is this correct behaviour? |
|
|
* |
|
|
* NetBSD/cobalt seems to want it, but Linux on MobilePro does not. |
|
|
*/ |
|
|
if (!diskimage_exist(cpu->machine, d->drive + d->base_drive, |
|
|
DISKIMAGE_IDE)) |
|
|
odata = 0xff; |
|
|
#endif |
|
|
|
|
322 |
return odata; |
return odata; |
323 |
} |
} |
324 |
|
|
333 |
struct wdc_data *d = extra; |
struct wdc_data *d = extra; |
334 |
uint64_t idata = 0, odata = 0; |
uint64_t idata = 0, odata = 0; |
335 |
|
|
336 |
idata = memory_readmax64(cpu, data, len); |
idata = data[0]; |
337 |
|
|
338 |
/* Same as the normal status byte? */ |
/* Same as the normal status byte? */ |
339 |
odata = status_byte(d, cpu); |
odata = status_byte(d, cpu); |
346 |
(int)idata); |
(int)idata); |
347 |
|
|
348 |
if (writeflag == MEM_READ) |
if (writeflag == MEM_READ) |
349 |
memory_writemax64(cpu, data, len, odata); |
data[0] = odata; |
350 |
|
|
351 |
return 1; |
return 1; |
352 |
} |
} |
361 |
{ |
{ |
362 |
struct wdc_data *d = extra; |
struct wdc_data *d = extra; |
363 |
uint64_t idata = 0, odata = 0; |
uint64_t idata = 0, odata = 0; |
364 |
int i, cyls, heads, sectors_per_track; |
int i; |
365 |
|
|
366 |
idata = memory_readmax64(cpu, data, len); |
if (writeflag == MEM_WRITE) { |
367 |
|
if (relative_addr == wd_data) |
368 |
|
idata = memory_readmax64(cpu, data, len); |
369 |
|
else |
370 |
|
idata = data[0]; |
371 |
|
} |
372 |
|
|
373 |
switch (relative_addr) { |
switch (relative_addr) { |
374 |
|
|
375 |
case wd_data: /* 0: data */ |
case wd_data: /* 0: data */ |
376 |
if (writeflag==MEM_READ) { |
if (writeflag == MEM_READ) { |
377 |
odata = 0; |
odata = 0; |
378 |
|
|
379 |
/* TODO: This is hardcoded for little-endian? */ |
/* TODO: This is hardcoded for little-endian? */ |
386 |
odata += (wdc_get_inbuf(d) << 24); |
odata += (wdc_get_inbuf(d) << 24); |
387 |
} |
} |
388 |
|
|
389 |
#ifdef DATA_DEBUG |
if (d->data_debug) |
390 |
debug("[ wdc: read from DATA: 0x%04x ]\n", odata); |
debug("[ wdc: read from DATA: 0x%04x ]\n", |
391 |
#endif |
(int)odata); |
392 |
|
#if 0 |
393 |
if (d->inbuf_tail != d->inbuf_head) |
if (d->inbuf_tail != d->inbuf_head) |
394 |
|
#else |
395 |
|
if (d->inbuf_tail != d->inbuf_head && |
396 |
|
((d->inbuf_tail - d->inbuf_head) % 512) == 0) |
397 |
|
#endif |
398 |
d->delayed_interrupt = INT_DELAY; |
d->delayed_interrupt = INT_DELAY; |
|
|
|
399 |
} else { |
} else { |
400 |
int inbuf_len; |
int inbuf_len; |
401 |
#ifdef DATA_DEBUG |
if (d->data_debug) |
402 |
debug("[ wdc: write to DATA (len=%i): 0x%08lx ]\n", |
debug("[ wdc: write to DATA (len=%i): " |
403 |
(int)len, (long)idata); |
"0x%08lx ]\n", (int)len, (long)idata); |
|
#endif |
|
404 |
if (!d->write_in_progress) { |
if (!d->write_in_progress) { |
405 |
fatal("[ wdc: write to DATA, but not " |
fatal("[ wdc: write to DATA, but not " |
406 |
"expecting any? (len=%i): 0x%08lx ]\n", |
"expecting any? (len=%i): 0x%08lx ]\n", |
427 |
|
|
428 |
#if 0 |
#if 0 |
429 |
if ((inbuf_len % (512 * d->write_count)) == 0) { |
if ((inbuf_len % (512 * d->write_count)) == 0) { |
430 |
#endif |
#else |
431 |
if ((inbuf_len % 512) == 0) { |
if ((inbuf_len % 512) == 0) { |
432 |
|
#endif |
433 |
int count = 1; /* d->write_count; */ |
int count = 1; /* d->write_count; */ |
434 |
unsigned char *buf = malloc(count * 512); |
unsigned char buf[512 * count]; |
435 |
if (buf == NULL) { |
unsigned char *b = buf; |
|
fprintf(stderr, "out of memory\n"); |
|
|
exit(1); |
|
|
} |
|
436 |
|
|
437 |
for (i=0; i<512 * count; i++) |
if (d->inbuf_tail+512*count <= WDC_INBUF_SIZE) { |
438 |
buf[i] = wdc_get_inbuf(d); |
b = d->inbuf + d->inbuf_tail; |
439 |
|
d->inbuf_tail = (d->inbuf_tail + 512 |
440 |
|
* count) % WDC_INBUF_SIZE; |
441 |
|
} else { |
442 |
|
for (i=0; i<512 * count; i++) |
443 |
|
buf[i] = wdc_get_inbuf(d); |
444 |
|
} |
445 |
|
|
446 |
diskimage_access(cpu->machine, |
diskimage_access(cpu->machine, |
447 |
d->drive + d->base_drive, DISKIMAGE_IDE, 1, |
d->drive + d->base_drive, DISKIMAGE_IDE, 1, |
448 |
d->write_offset, buf, 512 * count); |
d->write_offset, b, 512 * count); |
|
free(buf); |
|
449 |
|
|
450 |
d->write_count --; |
d->write_count --; |
451 |
d->write_offset += 512; |
d->write_offset += 512; |
461 |
case wd_error: /* 1: error (r), precomp (w) */ |
case wd_error: /* 1: error (r), precomp (w) */ |
462 |
if (writeflag==MEM_READ) { |
if (writeflag==MEM_READ) { |
463 |
odata = d->error; |
odata = d->error; |
464 |
debug("[ wdc: read from ERROR: 0x%02x ]\n", odata); |
debug("[ wdc: read from ERROR: 0x%02x ]\n", |
465 |
|
(int)odata); |
466 |
/* TODO: is the error value cleared on read? */ |
/* TODO: is the error value cleared on read? */ |
467 |
d->error = 0; |
d->error = 0; |
468 |
} else { |
} else { |
469 |
d->precomp = idata; |
d->precomp = idata; |
470 |
debug("[ wdc: write to PRECOMP: 0x%02x ]\n", idata); |
debug("[ wdc: write to PRECOMP: 0x%02x ]\n",(int)idata); |
471 |
} |
} |
472 |
break; |
break; |
473 |
|
|
474 |
case wd_seccnt: /* 2: sector count */ |
case wd_seccnt: /* 2: sector count */ |
475 |
if (writeflag==MEM_READ) { |
if (writeflag==MEM_READ) { |
476 |
odata = d->seccnt; |
odata = d->seccnt; |
477 |
debug("[ wdc: read from SECCNT: 0x%02x ]\n", odata); |
debug("[ wdc: read from SECCNT: 0x%02x ]\n",(int)odata); |
478 |
} else { |
} else { |
479 |
d->seccnt = idata; |
d->seccnt = idata; |
480 |
debug("[ wdc: write to SECCNT: 0x%02x ]\n", idata); |
debug("[ wdc: write to SECCNT: 0x%02x ]\n", (int)idata); |
481 |
} |
} |
482 |
break; |
break; |
483 |
|
|
484 |
case wd_sector: /* 3: first sector */ |
case wd_sector: /* 3: first sector */ |
485 |
if (writeflag==MEM_READ) { |
if (writeflag==MEM_READ) { |
486 |
odata = d->sector; |
odata = d->sector; |
487 |
debug("[ wdc: read from SECTOR: 0x%02x ]\n", odata); |
debug("[ wdc: read from SECTOR: 0x%02x ]\n",(int)odata); |
488 |
} else { |
} else { |
489 |
d->sector = idata; |
d->sector = idata; |
490 |
debug("[ wdc: write to SECTOR: 0x%02x ]\n", idata); |
debug("[ wdc: write to SECTOR: 0x%02x ]\n", (int)idata); |
491 |
} |
} |
492 |
break; |
break; |
493 |
|
|
494 |
case wd_cyl_lo: /* 4: cylinder low */ |
case wd_cyl_lo: /* 4: cylinder low */ |
495 |
if (writeflag==MEM_READ) { |
if (writeflag==MEM_READ) { |
496 |
odata = d->cyl_lo; |
odata = d->cyl_lo; |
497 |
debug("[ wdc: read from CYL_LO: 0x%02x ]\n", odata); |
debug("[ wdc: read from CYL_LO: 0x%02x ]\n",(int)odata); |
498 |
} else { |
} else { |
499 |
d->cyl_lo = idata; |
d->cyl_lo = idata; |
500 |
debug("[ wdc: write to CYL_LO: 0x%02x ]\n", idata); |
debug("[ wdc: write to CYL_LO: 0x%02x ]\n", (int)idata); |
501 |
} |
} |
502 |
break; |
break; |
503 |
|
|
504 |
case wd_cyl_hi: /* 5: cylinder low */ |
case wd_cyl_hi: /* 5: cylinder low */ |
505 |
if (writeflag==MEM_READ) { |
if (writeflag==MEM_READ) { |
506 |
odata = d->cyl_hi; |
odata = d->cyl_hi; |
507 |
debug("[ wdc: read from CYL_HI: 0x%02x ]\n", odata); |
debug("[ wdc: read from CYL_HI: 0x%02x ]\n",(int)odata); |
508 |
} else { |
} else { |
509 |
d->cyl_hi = idata; |
d->cyl_hi = idata; |
510 |
debug("[ wdc: write to CYL_HI: 0x%02x ]\n", idata); |
debug("[ wdc: write to CYL_HI: 0x%02x ]\n", (int)idata); |
511 |
} |
} |
512 |
break; |
break; |
513 |
|
|
532 |
case wd_command: /* 7: command or status */ |
case wd_command: /* 7: command or status */ |
533 |
if (writeflag==MEM_READ) { |
if (writeflag==MEM_READ) { |
534 |
odata = status_byte(d, cpu); |
odata = status_byte(d, cpu); |
|
#if 1 |
|
535 |
if (!quiet_mode) |
if (!quiet_mode) |
536 |
debug("[ wdc: read from STATUS: 0x%02x ]\n", |
debug("[ wdc: read from STATUS: 0x%02x ]\n", |
537 |
odata); |
(int)odata); |
|
#endif |
|
|
|
|
538 |
cpu_interrupt_ack(cpu, d->irq_nr); |
cpu_interrupt_ack(cpu, d->irq_nr); |
539 |
d->delayed_interrupt = 0; |
d->delayed_interrupt = 0; |
540 |
} else { |
} else { |
541 |
debug("[ wdc: write to COMMAND: 0x%02x ]\n", idata); |
debug("[ wdc: write to COMMAND: 0x%02x ]\n",(int)idata); |
542 |
d->cur_command = idata; |
d->cur_command = idata; |
543 |
|
|
544 |
/* TODO: Is this correct behaviour? */ |
/* TODO: Is this correct behaviour? */ |
551 |
|
|
552 |
/* Handle the command: */ |
/* Handle the command: */ |
553 |
switch (d->cur_command) { |
switch (d->cur_command) { |
|
case WDCC_READ: |
|
|
debug("[ wdc: READ from drive %i, head %i, " |
|
|
"cylinder %i, sector %i, nsecs %i ]\n", |
|
|
d->drive, d->head, d->cyl_hi*256+d->cyl_lo, |
|
|
d->sector, d->seccnt); |
|
|
/* TODO: HAHA! This should be removed |
|
|
quickly */ |
|
|
diskimage_getchs(cpu->machine, d->drive + |
|
|
d->base_drive, DISKIMAGE_IDE, &cyls, |
|
|
&heads, §ors_per_track); |
|
|
|
|
|
{ |
|
|
unsigned char buf[512*256]; |
|
|
int cyl = d->cyl_hi * 256+ d->cyl_lo; |
|
|
int count = d->seccnt? d->seccnt : 256; |
|
|
uint64_t offset = 512 * (d->sector - 1 |
|
|
+ d->head * sectors_per_track + |
|
|
heads*sectors_per_track*cyl); |
|
554 |
|
|
555 |
#if 0 |
case WDCC_READ: |
556 |
/* LBA: */ |
if (!quiet_mode) |
557 |
if (d->lba) |
debug("[ wdc: READ from drive %i, head" |
558 |
offset = 512 * (((d->head & 0xf) << 24) + (cyl << 8) + d->sector); |
" %i, cyl %i, sector %i, nsecs %i " |
559 |
printf("WDC read from offset %lli\n", (long long)offset); |
"]\n", d->drive, d->head, |
560 |
#endif |
d->cyl_hi*256+d->cyl_lo, d->sector, |
561 |
diskimage_access(cpu->machine, |
d->seccnt); |
562 |
d->drive + d->base_drive, |
wdc__read(cpu, d); |
|
DISKIMAGE_IDE, 0, |
|
|
offset, buf, 512 * count); |
|
|
/* TODO: result code */ |
|
|
for (i=0; i<512 * count; i++) |
|
|
wdc_addtoinbuf(d, buf[i]); |
|
|
} |
|
|
d->delayed_interrupt = INT_DELAY; |
|
563 |
break; |
break; |
|
case WDCC_WRITE: |
|
|
debug("[ wdc: WRITE to drive %i, head %i, " |
|
|
"cylinder %i, sector %i, nsecs %i ]\n", |
|
|
d->drive, d->head, d->cyl_hi*256+d->cyl_lo, |
|
|
d->sector, d->seccnt); |
|
|
/* TODO: HAHA! This should be removed |
|
|
quickly */ |
|
|
diskimage_getchs(cpu->machine, d->drive + |
|
|
d->base_drive, DISKIMAGE_IDE, &cyls, |
|
|
&heads, §ors_per_track); |
|
|
{ |
|
|
int cyl = d->cyl_hi * 256+ d->cyl_lo; |
|
|
int count = d->seccnt? d->seccnt : 256; |
|
|
uint64_t offset = 512 * (d->sector - 1 |
|
|
+ d->head * sectors_per_track + |
|
|
heads*sectors_per_track*cyl); |
|
|
|
|
|
#if 0 |
|
|
/* LBA: */ |
|
|
if (d->lba) |
|
|
offset = 512 * (((d->head & 0xf) << 24) + (cyl << 8) + d->sector); |
|
|
printf("WDC write to offset %lli\n", (long long)offset); |
|
|
#endif |
|
564 |
|
|
565 |
d->write_in_progress = 1; |
case WDCC_WRITE: |
566 |
d->write_count = count; |
if (!quiet_mode) |
567 |
d->write_offset = offset; |
debug("[ wdc: WRITE to drive %i, head" |
568 |
|
" %i, cyl %i, sector %i, nsecs %i" |
569 |
/* TODO: result code */ |
" ]\n", d->drive, d->head, |
570 |
} |
d->cyl_hi*256+d->cyl_lo, d->sector, |
571 |
/* TODO: Really interrupt here? */ |
d->seccnt); |
572 |
#if 0 |
wdc__write(cpu, d); |
|
d->delayed_interrupt = INT_DELAY; |
|
|
#endif |
|
573 |
break; |
break; |
574 |
|
|
575 |
case WDCC_IDP: /* Initialize drive parameters */ |
case WDCC_IDP: /* Initialize drive parameters */ |
578 |
/* TODO */ |
/* TODO */ |
579 |
d->delayed_interrupt = INT_DELAY; |
d->delayed_interrupt = INT_DELAY; |
580 |
break; |
break; |
581 |
|
|
582 |
case SET_FEATURES: |
case SET_FEATURES: |
583 |
fatal("[ wdc: SET_FEATURES drive %i (TODO), " |
fatal("[ wdc: SET_FEATURES drive %i (TODO), " |
584 |
"feature 0x%02x ]\n", d->drive, d->precomp); |
"feature 0x%02x ]\n", d->drive, d->precomp); |
595 |
/* TODO: always interrupt? */ |
/* TODO: always interrupt? */ |
596 |
d->delayed_interrupt = INT_DELAY; |
d->delayed_interrupt = INT_DELAY; |
597 |
break; |
break; |
598 |
|
|
599 |
case WDCC_RECAL: |
case WDCC_RECAL: |
600 |
debug("[ wdc: RECAL drive %i ]\n", d->drive); |
debug("[ wdc: RECAL drive %i ]\n", d->drive); |
601 |
d->delayed_interrupt = INT_DELAY; |
d->delayed_interrupt = INT_DELAY; |
602 |
break; |
break; |
603 |
|
|
604 |
case WDCC_IDENTIFY: |
case WDCC_IDENTIFY: |
605 |
debug("[ wdc: IDENTIFY drive %i ]\n", d->drive); |
debug("[ wdc: IDENTIFY drive %i ]\n", d->drive); |
606 |
wdc_initialize_identify_struct(cpu, d); |
wdc_initialize_identify_struct(cpu, d); |
614 |
} |
} |
615 |
d->delayed_interrupt = INT_DELAY; |
d->delayed_interrupt = INT_DELAY; |
616 |
break; |
break; |
617 |
|
|
618 |
case WDCC_IDLE_IMMED: |
case WDCC_IDLE_IMMED: |
619 |
debug("[ wdc: IDLE_IMMED drive %i ]\n", |
debug("[ wdc: IDLE_IMMED drive %i ]\n", |
620 |
d->drive); |
d->drive); |
621 |
/* TODO: interrupt here? */ |
/* TODO: interrupt here? */ |
622 |
d->delayed_interrupt = INT_DELAY; |
d->delayed_interrupt = INT_DELAY; |
623 |
break; |
break; |
624 |
|
|
625 |
|
/* Unsupported commands, without warning: */ |
626 |
|
case ATAPI_IDENTIFY_DEVICE: |
627 |
|
case WDCC_SEC_SET_PASSWORD: |
628 |
|
case WDCC_SEC_UNLOCK: |
629 |
|
case WDCC_SEC_ERASE_PREPARE: |
630 |
|
case WDCC_SEC_ERASE_UNIT: |
631 |
|
case WDCC_SEC_FREEZE_LOCK: |
632 |
|
case WDCC_SEC_DISABLE_PASSWORD: |
633 |
|
d->error |= WDCE_ABRT; |
634 |
|
break; |
635 |
|
|
636 |
default: |
default: |
637 |
/* TODO */ |
/* TODO */ |
638 |
d->error |= WDCE_ABRT; |
d->error |= WDCE_ABRT; |
639 |
|
|
640 |
fatal("[ wdc: unknown command 0x%02x (" |
fatal("[ wdc: WARNING! Unimplemented command " |
641 |
"drive %i, head %i, cylinder %i, sector %i," |
"0x%02x (drive %i, head %i, cyl %i, sector" |
642 |
" nsecs %i) ]\n", d->cur_command, d->drive, |
" %i, nsecs %i) ]\n", d->cur_command, |
643 |
d->head, d->cyl_hi*256+d->cyl_lo, |
d->drive, d->head, d->cyl_hi*256+d->cyl_lo, |
644 |
d->sector, d->seccnt); |
d->sector, d->seccnt); |
|
exit(1); |
|
645 |
} |
} |
646 |
} |
} |
647 |
break; |
break; |
655 |
(int)relative_addr, (int)idata); |
(int)relative_addr, (int)idata); |
656 |
} |
} |
657 |
|
|
658 |
if (writeflag == MEM_READ) |
if (cpu->machine->machine_type != MACHINE_HPCMIPS) |
659 |
memory_writemax64(cpu, data, len, odata); |
dev_wdc_tick(cpu, extra); |
660 |
|
|
661 |
|
if (writeflag == MEM_READ) { |
662 |
|
if (relative_addr == wd_data) |
663 |
|
memory_writemax64(cpu, data, len, odata); |
664 |
|
else |
665 |
|
data[0] = odata; |
666 |
|
} |
667 |
|
|
668 |
return 1; |
return 1; |
669 |
} |
} |
670 |
|
|
671 |
|
|
672 |
/* |
/* |
673 |
* dev_wdc_init(): |
* devinit_wdc(): |
|
* |
|
|
* base_drive should be 0 for the primary device, and 2 for the secondary. |
|
674 |
*/ |
*/ |
675 |
void dev_wdc_init(struct machine *machine, struct memory *mem, |
int devinit_wdc(struct devinit *devinit) |
|
uint64_t baseaddr, int irq_nr, int base_drive) |
|
676 |
{ |
{ |
677 |
struct wdc_data *d; |
struct wdc_data *d; |
678 |
uint64_t alt_status_addr; |
uint64_t alt_status_addr; |
679 |
|
int i, tick_shift = WDC_TICK_SHIFT; |
680 |
|
|
681 |
d = malloc(sizeof(struct wdc_data)); |
d = malloc(sizeof(struct wdc_data)); |
682 |
if (d == NULL) { |
if (d == NULL) { |
684 |
exit(1); |
exit(1); |
685 |
} |
} |
686 |
memset(d, 0, sizeof(struct wdc_data)); |
memset(d, 0, sizeof(struct wdc_data)); |
687 |
d->irq_nr = irq_nr; |
d->irq_nr = devinit->irq_nr; |
688 |
d->base_drive = base_drive; |
|
689 |
|
/* base_drive = 0 for the primary controller, 2 for the secondary. */ |
690 |
|
d->base_drive = 0; |
691 |
|
if ((devinit->addr & 0xfff) == 0x170) |
692 |
|
d->base_drive = 2; |
693 |
|
|
694 |
alt_status_addr = baseaddr + 0x206; |
alt_status_addr = devinit->addr + 0x206; |
695 |
|
|
696 |
/* Special hack for pcic/hpcmips: TODO: Fix */ |
/* Special hack for pcic/hpcmips: TODO: Fix */ |
697 |
if (baseaddr == 0x14000180) |
if (devinit->addr == 0x14000180) |
698 |
alt_status_addr = 0x14000386; |
alt_status_addr = 0x14000386; |
699 |
|
|
700 |
memory_device_register(mem, "wdc_altstatus", alt_status_addr, 2, |
/* Get disk geometries: */ |
701 |
dev_wdc_altstatus_access, d, MEM_DEFAULT, NULL); |
for (i=0; i<2; i++) |
702 |
memory_device_register(mem, "wdc", baseaddr, DEV_WDC_LENGTH, |
if (diskimage_exist(devinit->machine, d->base_drive +i, |
703 |
dev_wdc_access, d, MEM_DEFAULT, NULL); |
DISKIMAGE_IDE)) |
704 |
|
diskimage_getchs(devinit->machine, d->base_drive + i, |
705 |
|
DISKIMAGE_IDE, &d->cyls[i], &d->heads[i], |
706 |
|
&d->sectors_per_track[i]); |
707 |
|
|
708 |
|
memory_device_register(devinit->machine->memory, "wdc_altstatus", |
709 |
|
alt_status_addr, 2, dev_wdc_altstatus_access, d, MEM_DEFAULT, NULL); |
710 |
|
memory_device_register(devinit->machine->memory, devinit->name, |
711 |
|
devinit->addr, DEV_WDC_LENGTH, dev_wdc_access, d, MEM_DEFAULT, |
712 |
|
NULL); |
713 |
|
|
714 |
machine_add_tickfunction(machine, dev_wdc_tick, |
if (devinit->machine->machine_type != MACHINE_HPCMIPS) |
715 |
d, WDC_TICK_SHIFT); |
tick_shift += 2; |
716 |
|
|
717 |
|
machine_add_tickfunction(devinit->machine, dev_wdc_tick, |
718 |
|
d, tick_shift); |
719 |
|
|
720 |
|
return 1; |
721 |
} |
} |
722 |
|
|