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1da177e4 LT |
1 | /* DO NOT EDIT - Generated automatically by script_asm.pl */ |
2 | static u32 SCRIPT[] = { | |
3 | /* | |
4 | ||
5 | ||
6 | ||
7 | ||
8 | ||
9 | ; 53c710 driver. Modified from Drew Eckhardts driver | |
10 | ; for 53c810 by Richard Hirst [richard@sleepie.demon.co.uk] | |
11 | ; | |
12 | ; I have left the script for the 53c8xx family in here, as it is likely | |
13 | ; to be useful to see what I changed when bug hunting. | |
14 | ||
15 | ; NCR 53c810 driver, main script | |
16 | ; Sponsored by | |
17 | ; iX Multiuser Multitasking Magazine | |
18 | ; hm@ix.de | |
19 | ; | |
20 | ; Copyright 1993, 1994, 1995 Drew Eckhardt | |
21 | ; Visionary Computing | |
22 | ; (Unix and Linux consulting and custom programming) | |
23 | ; drew@PoohSticks.ORG | |
24 | ; +1 (303) 786-7975 | |
25 | ; | |
26 | ; TolerANT and SCSI SCRIPTS are registered trademarks of NCR Corporation. | |
27 | ; | |
28 | ; PRE-ALPHA | |
29 | ; | |
30 | ; For more information, please consult | |
31 | ; | |
32 | ; NCR 53C810 | |
33 | ; PCI-SCSI I/O Processor | |
34 | ; Data Manual | |
35 | ; | |
36 | ; NCR 53C710 | |
37 | ; SCSI I/O Processor | |
38 | ; Programmers Guide | |
39 | ; | |
40 | ; NCR Microelectronics | |
41 | ; 1635 Aeroplaza Drive | |
42 | ; Colorado Springs, CO 80916 | |
43 | ; 1+ (719) 578-3400 | |
44 | ; | |
45 | ; Toll free literature number | |
46 | ; +1 (800) 334-5454 | |
47 | ; | |
48 | ; IMPORTANT : This code is self modifying due to the limitations of | |
49 | ; the NCR53c7,8xx series chips. Persons debugging this code with | |
50 | ; the remote debugger should take this into account, and NOT set | |
51 | ; breakpoints in modified instructions. | |
52 | ; | |
53 | ; Design: | |
54 | ; The NCR53c7,8xx family of SCSI chips are busmasters with an onboard | |
55 | ; microcontroller using a simple instruction set. | |
56 | ; | |
57 | ; So, to minimize the effects of interrupt latency, and to maximize | |
58 | ; throughput, this driver offloads the practical maximum amount | |
59 | ; of processing to the SCSI chip while still maintaining a common | |
60 | ; structure. | |
61 | ; | |
62 | ; Where tradeoffs were needed between efficiency on the older | |
63 | ; chips and the newer NCR53c800 series, the NCR53c800 series | |
64 | ; was chosen. | |
65 | ; | |
66 | ; While the NCR53c700 and NCR53c700-66 lacked the facilities to fully | |
67 | ; automate SCSI transfers without host processor intervention, this | |
68 | ; isn't the case with the NCR53c710 and newer chips which allow | |
69 | ; | |
70 | ; - reads and writes to the internal registers from within the SCSI | |
71 | ; scripts, allowing the SCSI SCRIPTS(tm) code to save processor | |
72 | ; state so that multiple threads of execution are possible, and also | |
73 | ; provide an ALU for loop control, etc. | |
74 | ; | |
75 | ; - table indirect addressing for some instructions. This allows | |
76 | ; pointers to be located relative to the DSA ((Data Structure | |
77 | ; Address) register. | |
78 | ; | |
79 | ; These features make it possible to implement a mailbox style interface, | |
80 | ; where the same piece of code is run to handle I/O for multiple threads | |
81 | ; at once minimizing our need to relocate code. Since the NCR53c700/ | |
82 | ; NCR53c800 series have a unique combination of features, making a | |
83 | ; a standard ingoing/outgoing mailbox system, costly, I've modified it. | |
84 | ; | |
85 | ; - Mailboxes are a mixture of code and data. This lets us greatly | |
86 | ; simplify the NCR53c810 code and do things that would otherwise | |
87 | ; not be possible. | |
88 | ; | |
89 | ; The saved data pointer is now implemented as follows : | |
90 | ; | |
91 | ; Control flow has been architected such that if control reaches | |
92 | ; munge_save_data_pointer, on a restore pointers message or | |
93 | ; reconnection, a jump to the address formerly in the TEMP register | |
94 | ; will allow the SCSI command to resume execution. | |
95 | ; | |
96 | ||
97 | ; | |
98 | ; Note : the DSA structures must be aligned on 32 bit boundaries, | |
99 | ; since the source and destination of MOVE MEMORY instructions | |
100 | ; must share the same alignment and this is the alignment of the | |
101 | ; NCR registers. | |
102 | ; | |
103 | ||
104 | ; For some systems (MVME166, for example) dmode is always the same, so don't | |
105 | ; waste time writing it | |
106 | ||
107 | ||
108 | ||
109 | ||
110 | ||
111 | ||
112 | ||
113 | ||
114 | ||
115 | ||
116 | ||
117 | ABSOLUTE dsa_temp_lun = 0 ; Patch to lun for current dsa | |
118 | ABSOLUTE dsa_temp_next = 0 ; Patch to dsa next for current dsa | |
119 | ABSOLUTE dsa_temp_addr_next = 0 ; Patch to address of dsa next address | |
120 | ; for current dsa | |
121 | ABSOLUTE dsa_temp_sync = 0 ; Patch to address of per-target | |
122 | ; sync routine | |
123 | ABSOLUTE dsa_sscf_710 = 0 ; Patch to address of per-target | |
124 | ; sscf value (53c710) | |
125 | ABSOLUTE dsa_temp_target = 0 ; Patch to id for current dsa | |
126 | ABSOLUTE dsa_temp_addr_saved_pointer = 0; Patch to address of per-command | |
127 | ; saved data pointer | |
128 | ABSOLUTE dsa_temp_addr_residual = 0 ; Patch to address of per-command | |
129 | ; current residual code | |
130 | ABSOLUTE dsa_temp_addr_saved_residual = 0; Patch to address of per-command | |
131 | ; saved residual code | |
132 | ABSOLUTE dsa_temp_addr_new_value = 0 ; Address of value for JUMP operand | |
133 | ABSOLUTE dsa_temp_addr_array_value = 0 ; Address to copy to | |
134 | ABSOLUTE dsa_temp_addr_dsa_value = 0 ; Address of this DSA value | |
135 | ||
136 | ; | |
137 | ; Once a device has initiated reselection, we need to compare it | |
138 | ; against the singly linked list of commands which have disconnected | |
139 | ; and are pending reselection. These commands are maintained in | |
140 | ; an unordered singly linked list of DSA structures, through the | |
141 | ; DSA pointers at their 'centers' headed by the reconnect_dsa_head | |
142 | ; pointer. | |
143 | ; | |
144 | ; To avoid complications in removing commands from the list, | |
145 | ; I minimize the amount of expensive (at eight operations per | |
146 | ; addition @ 500-600ns each) pointer operations which must | |
147 | ; be done in the NCR driver by precomputing them on the | |
148 | ; host processor during dsa structure generation. | |
149 | ; | |
150 | ; The fixed-up per DSA code knows how to recognize the nexus | |
151 | ; associated with the corresponding SCSI command, and modifies | |
152 | ; the source and destination pointers for the MOVE MEMORY | |
153 | ; instruction which is executed when reselected_ok is called | |
154 | ; to remove the command from the list. Similarly, DSA is | |
155 | ; loaded with the address of the next DSA structure and | |
156 | ; reselected_check_next is called if a failure occurs. | |
157 | ; | |
158 | ; Perhaps more concisely, the net effect of the mess is | |
159 | ; | |
160 | ; for (dsa = reconnect_dsa_head, dest = &reconnect_dsa_head, | |
161 | ; src = NULL; dsa; dest = &dsa->next, dsa = dsa->next) { | |
162 | ; src = &dsa->next; | |
163 | ; if (target_id == dsa->id && target_lun == dsa->lun) { | |
164 | ; *dest = *src; | |
165 | ; break; | |
166 | ; } | |
167 | ; } | |
168 | ; | |
169 | ; if (!dsa) | |
170 | ; error (int_err_unexpected_reselect); | |
171 | ; else | |
172 | ; longjmp (dsa->jump_resume, 0); | |
173 | ; | |
174 | ; | |
175 | ||
176 | ||
177 | ; Define DSA structure used for mailboxes | |
178 | ENTRY dsa_code_template | |
179 | dsa_code_template: | |
180 | ENTRY dsa_code_begin | |
181 | dsa_code_begin: | |
182 | ; RGH: Don't care about TEMP and DSA here | |
183 | ||
184 | MOVE MEMORY 4, dsa_temp_addr_dsa_value, addr_scratch | |
185 | ||
186 | at 0x00000000 : */ 0xc0000004,0x00000000,0x00000000, | |
187 | /* | |
188 | ||
189 | ||
190 | MOVE MEMORY 4, addr_scratch, saved_dsa | |
191 | ||
192 | at 0x00000003 : */ 0xc0000004,0x00000000,0x00000000, | |
193 | /* | |
194 | ; We are about to go and select the device, so must set SSCF bits | |
195 | MOVE MEMORY 4, dsa_sscf_710, addr_scratch | |
196 | ||
197 | at 0x00000006 : */ 0xc0000004,0x00000000,0x00000000, | |
198 | /* | |
199 | ||
200 | MOVE SCRATCH3 TO SFBR | |
201 | ||
202 | at 0x00000009 : */ 0x72370000,0x00000000, | |
203 | /* | |
204 | ||
205 | ||
206 | ||
207 | MOVE SFBR TO SBCL | |
208 | ||
209 | at 0x0000000b : */ 0x6a0b0000,0x00000000, | |
210 | /* | |
211 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
212 | ||
213 | at 0x0000000d : */ 0xc0000004,0x00000000,0x00000000, | |
214 | /* | |
215 | ||
216 | ||
217 | ||
218 | CALL select | |
219 | ||
220 | at 0x00000010 : */ 0x88080000,0x000001f8, | |
221 | /* | |
222 | ; Handle the phase mismatch which may have resulted from the | |
223 | ; MOVE FROM dsa_msgout if we returned here. The CLEAR ATN | |
224 | ; may or may not be necessary, and we should update script_asm.pl | |
225 | ; to handle multiple pieces. | |
226 | CLEAR ATN | |
227 | ||
228 | at 0x00000012 : */ 0x60000008,0x00000000, | |
229 | /* | |
230 | CLEAR ACK | |
231 | ||
232 | at 0x00000014 : */ 0x60000040,0x00000000, | |
233 | /* | |
234 | ||
235 | ; Replace second operand with address of JUMP instruction dest operand | |
236 | ; in schedule table for this DSA. Becomes dsa_jump_dest in 53c7,8xx.c. | |
237 | ENTRY dsa_code_fix_jump | |
238 | dsa_code_fix_jump: | |
239 | MOVE MEMORY 4, NOP_insn, 0 | |
240 | ||
241 | at 0x00000016 : */ 0xc0000004,0x00000000,0x00000000, | |
242 | /* | |
243 | JUMP select_done | |
244 | ||
245 | at 0x00000019 : */ 0x80080000,0x00000230, | |
246 | /* | |
247 | ||
248 | ; wrong_dsa loads the DSA register with the value of the dsa_next | |
249 | ; field. | |
250 | ; | |
251 | wrong_dsa: | |
252 | ||
253 | ; NOTE DSA is corrupt when we arrive here! | |
254 | ||
255 | ; Patch the MOVE MEMORY INSTRUCTION such that | |
256 | ; the destination address is the address of the OLD | |
257 | ; next pointer. | |
258 | ; | |
259 | MOVE MEMORY 4, dsa_temp_addr_next, reselected_ok_patch + 8 | |
260 | ||
261 | at 0x0000001b : */ 0xc0000004,0x00000000,0x000007ec, | |
262 | /* | |
263 | ||
264 | ; | |
265 | ; Move the _contents_ of the next pointer into the DSA register as | |
266 | ; the next I_T_L or I_T_L_Q tupple to check against the established | |
267 | ; nexus. | |
268 | ; | |
269 | MOVE MEMORY 4, dsa_temp_next, addr_scratch | |
270 | ||
271 | at 0x0000001e : */ 0xc0000004,0x00000000,0x00000000, | |
272 | /* | |
273 | ||
274 | ||
275 | MOVE MEMORY 4, addr_scratch, saved_dsa | |
276 | ||
277 | at 0x00000021 : */ 0xc0000004,0x00000000,0x00000000, | |
278 | /* | |
279 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
280 | ||
281 | at 0x00000024 : */ 0xc0000004,0x00000000,0x00000000, | |
282 | /* | |
283 | ||
284 | ||
285 | ||
286 | JUMP reselected_check_next | |
287 | ||
288 | at 0x00000027 : */ 0x80080000,0x000006f0, | |
289 | /* | |
290 | ||
291 | ABSOLUTE dsa_save_data_pointer = 0 | |
292 | ENTRY dsa_code_save_data_pointer | |
293 | dsa_code_save_data_pointer: | |
294 | ||
295 | ; When we get here, TEMP has been saved in jump_temp+4, DSA is corrupt | |
296 | ; We MUST return with DSA correct | |
297 | MOVE MEMORY 4, jump_temp+4, dsa_temp_addr_saved_pointer | |
298 | ||
299 | at 0x00000029 : */ 0xc0000004,0x000009c8,0x00000000, | |
300 | /* | |
301 | ; HARD CODED : 24 bytes needs to agree with 53c7,8xx.h | |
302 | MOVE MEMORY 24, dsa_temp_addr_residual, dsa_temp_addr_saved_residual | |
303 | ||
304 | at 0x0000002c : */ 0xc0000018,0x00000000,0x00000000, | |
305 | /* | |
306 | CLEAR ACK | |
307 | ||
308 | at 0x0000002f : */ 0x60000040,0x00000000, | |
309 | /* | |
310 | ||
311 | ||
312 | ||
313 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
314 | ||
315 | at 0x00000031 : */ 0xc0000004,0x00000000,0x00000000, | |
316 | /* | |
317 | JUMP jump_temp | |
318 | ||
319 | at 0x00000034 : */ 0x80080000,0x000009c4, | |
320 | /* | |
321 | ||
322 | ABSOLUTE dsa_restore_pointers = 0 | |
323 | ENTRY dsa_code_restore_pointers | |
324 | dsa_code_restore_pointers: | |
325 | ||
326 | ; TEMP and DSA are corrupt when we get here, but who cares! | |
327 | MOVE MEMORY 4, dsa_temp_addr_saved_pointer, jump_temp + 4 | |
328 | ||
329 | at 0x00000036 : */ 0xc0000004,0x00000000,0x000009c8, | |
330 | /* | |
331 | ; HARD CODED : 24 bytes needs to agree with 53c7,8xx.h | |
332 | MOVE MEMORY 24, dsa_temp_addr_saved_residual, dsa_temp_addr_residual | |
333 | ||
334 | at 0x00000039 : */ 0xc0000018,0x00000000,0x00000000, | |
335 | /* | |
336 | CLEAR ACK | |
337 | ||
338 | at 0x0000003c : */ 0x60000040,0x00000000, | |
339 | /* | |
340 | ; Restore DSA, note we don't care about TEMP | |
341 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
342 | ||
343 | at 0x0000003e : */ 0xc0000004,0x00000000,0x00000000, | |
344 | /* | |
345 | ||
346 | ||
347 | ||
348 | JUMP jump_temp | |
349 | ||
350 | at 0x00000041 : */ 0x80080000,0x000009c4, | |
351 | /* | |
352 | ||
353 | ||
354 | ABSOLUTE dsa_check_reselect = 0 | |
355 | ; dsa_check_reselect determines whether or not the current target and | |
356 | ; lun match the current DSA | |
357 | ENTRY dsa_code_check_reselect | |
358 | dsa_code_check_reselect: | |
359 | ||
360 | ||
361 | ||
362 | MOVE LCRC TO SFBR ; LCRC has our ID and his ID bits set | |
363 | ||
364 | at 0x00000043 : */ 0x72230000,0x00000000, | |
365 | /* | |
366 | JUMP REL (wrong_dsa), IF NOT dsa_temp_target, AND MASK 0x80 | |
367 | ||
368 | at 0x00000045 : */ 0x80848000,0x00ffff50, | |
369 | /* | |
370 | ||
371 | ||
372 | ||
373 | ||
374 | ||
375 | ; | |
376 | ; Hack - move to scratch first, since SFBR is not writeable | |
377 | ; via the CPU and hence a MOVE MEMORY instruction. | |
378 | ; | |
379 | ||
380 | MOVE MEMORY 1, reselected_identify, addr_scratch | |
381 | ||
382 | at 0x00000047 : */ 0xc0000001,0x00000000,0x00000000, | |
383 | /* | |
384 | ||
385 | ||
386 | ; BIG ENDIAN ON MVME16x | |
387 | MOVE SCRATCH3 TO SFBR | |
388 | ||
389 | at 0x0000004a : */ 0x72370000,0x00000000, | |
390 | /* | |
391 | ||
392 | ||
393 | ||
394 | ; FIXME : we need to accommodate bit fielded and binary here for '7xx/'8xx chips | |
395 | ; Are you sure about that? richard@sleepie.demon.co.uk | |
396 | JUMP REL (wrong_dsa), IF NOT dsa_temp_lun, AND MASK 0xf8 | |
397 | ||
398 | at 0x0000004c : */ 0x8084f800,0x00ffff34, | |
399 | /* | |
400 | ; Patch the MOVE MEMORY INSTRUCTION such that | |
401 | ; the source address is the address of this dsa's | |
402 | ; next pointer. | |
403 | MOVE MEMORY 4, dsa_temp_addr_next, reselected_ok_patch + 4 | |
404 | ||
405 | at 0x0000004e : */ 0xc0000004,0x00000000,0x000007e8, | |
406 | /* | |
407 | CALL reselected_ok | |
408 | ||
409 | at 0x00000051 : */ 0x88080000,0x00000798, | |
410 | /* | |
411 | ||
412 | ; Restore DSA following memory moves in reselected_ok | |
413 | ; dsa_temp_sync doesn't really care about DSA, but it has an | |
414 | ; optional debug INT so a valid DSA is a good idea. | |
415 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
416 | ||
417 | at 0x00000053 : */ 0xc0000004,0x00000000,0x00000000, | |
418 | /* | |
419 | ||
420 | CALL dsa_temp_sync | |
421 | ||
422 | at 0x00000056 : */ 0x88080000,0x00000000, | |
423 | /* | |
424 | ; Release ACK on the IDENTIFY message _after_ we've set the synchronous | |
425 | ; transfer parameters! | |
426 | CLEAR ACK | |
427 | ||
428 | at 0x00000058 : */ 0x60000040,0x00000000, | |
429 | /* | |
430 | ; Implicitly restore pointers on reselection, so a RETURN | |
431 | ; will transfer control back to the right spot. | |
432 | CALL REL (dsa_code_restore_pointers) | |
433 | ||
434 | at 0x0000005a : */ 0x88880000,0x00ffff68, | |
435 | /* | |
436 | RETURN | |
437 | ||
438 | at 0x0000005c : */ 0x90080000,0x00000000, | |
439 | /* | |
440 | ENTRY dsa_zero | |
441 | dsa_zero: | |
442 | ENTRY dsa_code_template_end | |
443 | dsa_code_template_end: | |
444 | ||
445 | ; Perform sanity check for dsa_fields_start == dsa_code_template_end - | |
446 | ; dsa_zero, puke. | |
447 | ||
448 | ABSOLUTE dsa_fields_start = 0 ; Sanity marker | |
449 | ; pad 48 bytes (fix this RSN) | |
450 | ABSOLUTE dsa_next = 48 ; len 4 Next DSA | |
451 | ; del 4 Previous DSA address | |
452 | ABSOLUTE dsa_cmnd = 56 ; len 4 Scsi_Cmnd * for this thread. | |
453 | ABSOLUTE dsa_select = 60 ; len 4 Device ID, Period, Offset for | |
454 | ; table indirect select | |
455 | ABSOLUTE dsa_msgout = 64 ; len 8 table indirect move parameter for | |
456 | ; select message | |
457 | ABSOLUTE dsa_cmdout = 72 ; len 8 table indirect move parameter for | |
458 | ; command | |
459 | ABSOLUTE dsa_dataout = 80 ; len 4 code pointer for dataout | |
460 | ABSOLUTE dsa_datain = 84 ; len 4 code pointer for datain | |
461 | ABSOLUTE dsa_msgin = 88 ; len 8 table indirect move for msgin | |
462 | ABSOLUTE dsa_status = 96 ; len 8 table indirect move for status byte | |
463 | ABSOLUTE dsa_msgout_other = 104 ; len 8 table indirect for normal message out | |
464 | ; (Synchronous transfer negotiation, etc). | |
465 | ABSOLUTE dsa_end = 112 | |
466 | ||
467 | ABSOLUTE schedule = 0 ; Array of JUMP dsa_begin or JUMP (next), | |
468 | ; terminated by a call to JUMP wait_reselect | |
469 | ||
470 | ; Linked lists of DSA structures | |
471 | ABSOLUTE reconnect_dsa_head = 0 ; Link list of DSAs which can reconnect | |
472 | ABSOLUTE addr_reconnect_dsa_head = 0 ; Address of variable containing | |
473 | ; address of reconnect_dsa_head | |
474 | ||
475 | ; These select the source and destination of a MOVE MEMORY instruction | |
476 | ABSOLUTE dmode_memory_to_memory = 0x0 | |
477 | ABSOLUTE dmode_memory_to_ncr = 0x0 | |
478 | ABSOLUTE dmode_ncr_to_memory = 0x0 | |
479 | ||
480 | ABSOLUTE addr_scratch = 0x0 | |
481 | ABSOLUTE addr_temp = 0x0 | |
482 | ||
483 | ABSOLUTE saved_dsa = 0x0 | |
484 | ABSOLUTE emulfly = 0x0 | |
485 | ABSOLUTE addr_dsa = 0x0 | |
486 | ||
487 | ||
488 | ||
489 | ; Interrupts - | |
490 | ; MSB indicates type | |
491 | ; 0 handle error condition | |
492 | ; 1 handle message | |
493 | ; 2 handle normal condition | |
494 | ; 3 debugging interrupt | |
495 | ; 4 testing interrupt | |
496 | ; Next byte indicates specific error | |
497 | ||
498 | ; XXX not yet implemented, I'm not sure if I want to - | |
499 | ; Next byte indicates the routine the error occurred in | |
500 | ; The LSB indicates the specific place the error occurred | |
501 | ||
502 | ABSOLUTE int_err_unexpected_phase = 0x00000000 ; Unexpected phase encountered | |
503 | ABSOLUTE int_err_selected = 0x00010000 ; SELECTED (nee RESELECTED) | |
504 | ABSOLUTE int_err_unexpected_reselect = 0x00020000 | |
505 | ABSOLUTE int_err_check_condition = 0x00030000 | |
506 | ABSOLUTE int_err_no_phase = 0x00040000 | |
507 | ABSOLUTE int_msg_wdtr = 0x01000000 ; WDTR message received | |
508 | ABSOLUTE int_msg_sdtr = 0x01010000 ; SDTR received | |
509 | ABSOLUTE int_msg_1 = 0x01020000 ; single byte special message | |
510 | ; received | |
511 | ||
512 | ABSOLUTE int_norm_select_complete = 0x02000000 ; Select complete, reprogram | |
513 | ; registers. | |
514 | ABSOLUTE int_norm_reselect_complete = 0x02010000 ; Nexus established | |
515 | ABSOLUTE int_norm_command_complete = 0x02020000 ; Command complete | |
516 | ABSOLUTE int_norm_disconnected = 0x02030000 ; Disconnected | |
517 | ABSOLUTE int_norm_aborted =0x02040000 ; Aborted *dsa | |
518 | ABSOLUTE int_norm_reset = 0x02050000 ; Generated BUS reset. | |
519 | ABSOLUTE int_norm_emulateintfly = 0x02060000 ; 53C710 Emulated intfly | |
520 | ABSOLUTE int_debug_break = 0x03000000 ; Break point | |
521 | ||
522 | ABSOLUTE int_debug_panic = 0x030b0000 ; Panic driver | |
523 | ||
524 | ||
525 | ABSOLUTE int_test_1 = 0x04000000 ; Test 1 complete | |
526 | ABSOLUTE int_test_2 = 0x04010000 ; Test 2 complete | |
527 | ABSOLUTE int_test_3 = 0x04020000 ; Test 3 complete | |
528 | ||
529 | ||
530 | ; These should start with 0x05000000, with low bits incrementing for | |
531 | ; each one. | |
532 | ||
533 | ||
534 | ||
535 | ABSOLUTE NCR53c7xx_msg_abort = 0 ; Pointer to abort message | |
536 | ABSOLUTE NCR53c7xx_msg_reject = 0 ; Pointer to reject message | |
537 | ABSOLUTE NCR53c7xx_zero = 0 ; long with zero in it, use for source | |
538 | ABSOLUTE NCR53c7xx_sink = 0 ; long to dump worthless data in | |
539 | ABSOLUTE NOP_insn = 0 ; NOP instruction | |
540 | ||
541 | ; Pointer to message, potentially multi-byte | |
542 | ABSOLUTE msg_buf = 0 | |
543 | ||
544 | ; Pointer to holding area for reselection information | |
545 | ABSOLUTE reselected_identify = 0 | |
546 | ABSOLUTE reselected_tag = 0 | |
547 | ||
548 | ; Request sense command pointer, it's a 6 byte command, should | |
549 | ; be constant for all commands since we always want 16 bytes of | |
550 | ; sense and we don't need to change any fields as we did under | |
551 | ; SCSI-I when we actually cared about the LUN field. | |
552 | ;EXTERNAL NCR53c7xx_sense ; Request sense command | |
553 | ||
554 | ||
555 | ; dsa_schedule | |
556 | ; PURPOSE : after a DISCONNECT message has been received, and pointers | |
557 | ; saved, insert the current DSA structure at the head of the | |
558 | ; disconnected queue and fall through to the scheduler. | |
559 | ; | |
560 | ; CALLS : OK | |
561 | ; | |
562 | ; INPUTS : dsa - current DSA structure, reconnect_dsa_head - list | |
563 | ; of disconnected commands | |
564 | ; | |
565 | ; MODIFIES : SCRATCH, reconnect_dsa_head | |
566 | ; | |
567 | ; EXITS : always passes control to schedule | |
568 | ||
569 | ENTRY dsa_schedule | |
570 | dsa_schedule: | |
571 | ||
572 | ||
573 | ||
574 | ||
575 | ; | |
576 | ; Calculate the address of the next pointer within the DSA | |
577 | ; structure of the command that is currently disconnecting | |
578 | ; | |
579 | ||
580 | ; Read what should be the current DSA from memory - actual DSA | |
581 | ; register is probably corrupt | |
582 | MOVE MEMORY 4, saved_dsa, addr_scratch | |
583 | ||
584 | at 0x0000005e : */ 0xc0000004,0x00000000,0x00000000, | |
585 | /* | |
586 | ||
587 | ||
588 | ||
589 | MOVE SCRATCH0 + dsa_next TO SCRATCH0 | |
590 | ||
591 | at 0x00000061 : */ 0x7e343000,0x00000000, | |
592 | /* | |
593 | MOVE SCRATCH1 + 0 TO SCRATCH1 WITH CARRY | |
594 | ||
595 | at 0x00000063 : */ 0x7f350000,0x00000000, | |
596 | /* | |
597 | MOVE SCRATCH2 + 0 TO SCRATCH2 WITH CARRY | |
598 | ||
599 | at 0x00000065 : */ 0x7f360000,0x00000000, | |
600 | /* | |
601 | MOVE SCRATCH3 + 0 TO SCRATCH3 WITH CARRY | |
602 | ||
603 | at 0x00000067 : */ 0x7f370000,0x00000000, | |
604 | /* | |
605 | ||
606 | ; Point the next field of this DSA structure at the current disconnected | |
607 | ; list | |
608 | ||
609 | MOVE MEMORY 4, addr_scratch, dsa_schedule_insert + 8 | |
610 | ||
611 | at 0x00000069 : */ 0xc0000004,0x00000000,0x000001b8, | |
612 | /* | |
613 | ||
614 | dsa_schedule_insert: | |
615 | MOVE MEMORY 4, reconnect_dsa_head, 0 | |
616 | ||
617 | at 0x0000006c : */ 0xc0000004,0x00000000,0x00000000, | |
618 | /* | |
619 | ||
620 | ; And update the head pointer. | |
621 | ||
622 | ; Read what should be the current DSA from memory - actual DSA | |
623 | ; register is probably corrupt | |
624 | MOVE MEMORY 4, saved_dsa, addr_scratch | |
625 | ||
626 | at 0x0000006f : */ 0xc0000004,0x00000000,0x00000000, | |
627 | /* | |
628 | ||
629 | ||
630 | ||
631 | ||
632 | MOVE MEMORY 4, addr_scratch, reconnect_dsa_head | |
633 | ||
634 | at 0x00000072 : */ 0xc0000004,0x00000000,0x00000000, | |
635 | /* | |
636 | ||
637 | ||
638 | ||
639 | ||
640 | ||
641 | ||
642 | CLEAR ACK | |
643 | ||
644 | at 0x00000075 : */ 0x60000040,0x00000000, | |
645 | /* | |
646 | ||
647 | ||
648 | ; Time to correct DSA following memory move | |
649 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
650 | ||
651 | at 0x00000077 : */ 0xc0000004,0x00000000,0x00000000, | |
652 | /* | |
653 | ||
654 | WAIT DISCONNECT | |
655 | ||
656 | at 0x0000007a : */ 0x48000000,0x00000000, | |
657 | /* | |
658 | ||
659 | ||
660 | ||
661 | ||
662 | ||
663 | ||
664 | JUMP schedule | |
665 | ||
666 | at 0x0000007c : */ 0x80080000,0x00000000, | |
667 | /* | |
668 | ||
669 | ||
670 | ; | |
671 | ; select | |
672 | ; | |
673 | ; PURPOSE : establish a nexus for the SCSI command referenced by DSA. | |
674 | ; On success, the current DSA structure is removed from the issue | |
675 | ; queue. Usually, this is entered as a fall-through from schedule, | |
676 | ; although the contingent allegiance handling code will write | |
677 | ; the select entry address to the DSP to restart a command as a | |
678 | ; REQUEST SENSE. A message is sent (usually IDENTIFY, although | |
679 | ; additional SDTR or WDTR messages may be sent). COMMAND OUT | |
680 | ; is handled. | |
681 | ; | |
682 | ; INPUTS : DSA - SCSI command, issue_dsa_head | |
683 | ; | |
684 | ; CALLS : NOT OK | |
685 | ; | |
686 | ; MODIFIES : SCRATCH, issue_dsa_head | |
687 | ; | |
688 | ; EXITS : on reselection or selection, go to select_failed | |
689 | ; otherwise, RETURN so control is passed back to | |
690 | ; dsa_begin. | |
691 | ; | |
692 | ||
693 | ENTRY select | |
694 | select: | |
695 | ||
696 | ||
697 | ||
698 | ||
699 | ||
700 | ||
701 | ||
702 | ||
703 | CLEAR TARGET | |
704 | ||
705 | at 0x0000007e : */ 0x60000200,0x00000000, | |
706 | /* | |
707 | ||
708 | ; XXX | |
709 | ; | |
710 | ; In effect, SELECTION operations are backgrounded, with execution | |
711 | ; continuing until code which waits for REQ or a fatal interrupt is | |
712 | ; encountered. | |
713 | ; | |
714 | ; So, for more performance, we could overlap the code which removes | |
715 | ; the command from the NCRs issue queue with the selection, but | |
716 | ; at this point I don't want to deal with the error recovery. | |
717 | ; | |
718 | ||
719 | ||
720 | ||
721 | ; Enable selection timer | |
722 | ||
723 | ||
724 | ||
725 | MOVE CTEST7 & 0xef TO CTEST7 | |
726 | ||
727 | at 0x00000080 : */ 0x7c1bef00,0x00000000, | |
728 | /* | |
729 | ||
730 | ||
731 | SELECT ATN FROM dsa_select, select_failed | |
732 | ||
733 | at 0x00000082 : */ 0x4300003c,0x00000828, | |
734 | /* | |
735 | JUMP select_msgout, WHEN MSG_OUT | |
736 | ||
737 | at 0x00000084 : */ 0x860b0000,0x00000218, | |
738 | /* | |
739 | ENTRY select_msgout | |
740 | select_msgout: | |
741 | ||
742 | ; Disable selection timer | |
743 | MOVE CTEST7 | 0x10 TO CTEST7 | |
744 | ||
745 | at 0x00000086 : */ 0x7a1b1000,0x00000000, | |
746 | /* | |
747 | ||
748 | MOVE FROM dsa_msgout, WHEN MSG_OUT | |
749 | ||
750 | at 0x00000088 : */ 0x1e000000,0x00000040, | |
751 | /* | |
752 | ||
753 | ||
754 | ||
755 | ||
756 | ||
757 | ||
758 | ||
759 | ||
760 | ||
761 | ||
762 | RETURN | |
763 | ||
764 | at 0x0000008a : */ 0x90080000,0x00000000, | |
765 | /* | |
766 | ||
767 | ; | |
768 | ; select_done | |
769 | ; | |
770 | ; PURPOSE: continue on to normal data transfer; called as the exit | |
771 | ; point from dsa_begin. | |
772 | ; | |
773 | ; INPUTS: dsa | |
774 | ; | |
775 | ; CALLS: OK | |
776 | ; | |
777 | ; | |
778 | ||
779 | select_done: | |
780 | ||
781 | ; NOTE DSA is corrupt when we arrive here! | |
782 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
783 | ||
784 | at 0x0000008c : */ 0xc0000004,0x00000000,0x00000000, | |
785 | /* | |
786 | ||
787 | ||
788 | ||
789 | ||
790 | ||
791 | ||
792 | ||
793 | ||
794 | ; After a successful selection, we should get either a CMD phase or | |
795 | ; some transfer request negotiation message. | |
796 | ||
797 | JUMP cmdout, WHEN CMD | |
798 | ||
799 | at 0x0000008f : */ 0x820b0000,0x0000025c, | |
800 | /* | |
801 | INT int_err_unexpected_phase, WHEN NOT MSG_IN | |
802 | ||
803 | at 0x00000091 : */ 0x9f030000,0x00000000, | |
804 | /* | |
805 | ||
806 | select_msg_in: | |
807 | CALL msg_in, WHEN MSG_IN | |
808 | ||
809 | at 0x00000093 : */ 0x8f0b0000,0x0000041c, | |
810 | /* | |
811 | JUMP select_msg_in, WHEN MSG_IN | |
812 | ||
813 | at 0x00000095 : */ 0x870b0000,0x0000024c, | |
814 | /* | |
815 | ||
816 | cmdout: | |
817 | INT int_err_unexpected_phase, WHEN NOT CMD | |
818 | ||
819 | at 0x00000097 : */ 0x9a030000,0x00000000, | |
820 | /* | |
821 | ||
822 | ||
823 | ||
824 | ENTRY cmdout_cmdout | |
825 | cmdout_cmdout: | |
826 | ||
827 | MOVE FROM dsa_cmdout, WHEN CMD | |
828 | ||
829 | at 0x00000099 : */ 0x1a000000,0x00000048, | |
830 | /* | |
831 | ||
832 | ||
833 | ||
834 | ||
835 | ; | |
836 | ; data_transfer | |
837 | ; other_out | |
838 | ; other_in | |
839 | ; other_transfer | |
840 | ; | |
841 | ; PURPOSE : handle the main data transfer for a SCSI command in | |
842 | ; several parts. In the first part, data_transfer, DATA_IN | |
843 | ; and DATA_OUT phases are allowed, with the user provided | |
844 | ; code (usually dynamically generated based on the scatter/gather | |
845 | ; list associated with a SCSI command) called to handle these | |
846 | ; phases. | |
847 | ; | |
848 | ; After control has passed to one of the user provided | |
849 | ; DATA_IN or DATA_OUT routines, back calls are made to | |
850 | ; other_transfer_in or other_transfer_out to handle non-DATA IN | |
851 | ; and DATA OUT phases respectively, with the state of the active | |
852 | ; data pointer being preserved in TEMP. | |
853 | ; | |
854 | ; On completion, the user code passes control to other_transfer | |
855 | ; which causes DATA_IN and DATA_OUT to result in unexpected_phase | |
856 | ; interrupts so that data overruns may be trapped. | |
857 | ; | |
858 | ; INPUTS : DSA - SCSI command | |
859 | ; | |
860 | ; CALLS : OK in data_transfer_start, not ok in other_out and other_in, ok in | |
861 | ; other_transfer | |
862 | ; | |
863 | ; MODIFIES : SCRATCH | |
864 | ; | |
865 | ; EXITS : if STATUS IN is detected, signifying command completion, | |
866 | ; the NCR jumps to command_complete. If MSG IN occurs, a | |
867 | ; CALL is made to msg_in. Otherwise, other_transfer runs in | |
868 | ; an infinite loop. | |
869 | ; | |
870 | ||
871 | ENTRY data_transfer | |
872 | data_transfer: | |
873 | JUMP cmdout_cmdout, WHEN CMD | |
874 | ||
875 | at 0x0000009b : */ 0x820b0000,0x00000264, | |
876 | /* | |
877 | CALL msg_in, WHEN MSG_IN | |
878 | ||
879 | at 0x0000009d : */ 0x8f0b0000,0x0000041c, | |
880 | /* | |
881 | INT int_err_unexpected_phase, WHEN MSG_OUT | |
882 | ||
883 | at 0x0000009f : */ 0x9e0b0000,0x00000000, | |
884 | /* | |
885 | JUMP do_dataout, WHEN DATA_OUT | |
886 | ||
887 | at 0x000000a1 : */ 0x800b0000,0x000002a4, | |
888 | /* | |
889 | JUMP do_datain, WHEN DATA_IN | |
890 | ||
891 | at 0x000000a3 : */ 0x810b0000,0x000002fc, | |
892 | /* | |
893 | JUMP command_complete, WHEN STATUS | |
894 | ||
895 | at 0x000000a5 : */ 0x830b0000,0x0000065c, | |
896 | /* | |
897 | JUMP data_transfer | |
898 | ||
899 | at 0x000000a7 : */ 0x80080000,0x0000026c, | |
900 | /* | |
901 | ENTRY end_data_transfer | |
902 | end_data_transfer: | |
903 | ||
904 | ; | |
905 | ; FIXME: On NCR53c700 and NCR53c700-66 chips, do_dataout/do_datain | |
906 | ; should be fixed up whenever the nexus changes so it can point to the | |
907 | ; correct routine for that command. | |
908 | ; | |
909 | ||
910 | ||
911 | ; Nasty jump to dsa->dataout | |
912 | do_dataout: | |
913 | ||
914 | MOVE MEMORY 4, saved_dsa, addr_scratch | |
915 | ||
916 | at 0x000000a9 : */ 0xc0000004,0x00000000,0x00000000, | |
917 | /* | |
918 | ||
919 | ||
920 | ||
921 | MOVE SCRATCH0 + dsa_dataout TO SCRATCH0 | |
922 | ||
923 | at 0x000000ac : */ 0x7e345000,0x00000000, | |
924 | /* | |
925 | MOVE SCRATCH1 + 0 TO SCRATCH1 WITH CARRY | |
926 | ||
927 | at 0x000000ae : */ 0x7f350000,0x00000000, | |
928 | /* | |
929 | MOVE SCRATCH2 + 0 TO SCRATCH2 WITH CARRY | |
930 | ||
931 | at 0x000000b0 : */ 0x7f360000,0x00000000, | |
932 | /* | |
933 | MOVE SCRATCH3 + 0 TO SCRATCH3 WITH CARRY | |
934 | ||
935 | at 0x000000b2 : */ 0x7f370000,0x00000000, | |
936 | /* | |
937 | ||
938 | MOVE MEMORY 4, addr_scratch, dataout_to_jump + 4 | |
939 | ||
940 | at 0x000000b4 : */ 0xc0000004,0x00000000,0x000002e0, | |
941 | /* | |
942 | ||
943 | dataout_to_jump: | |
944 | MOVE MEMORY 4, 0, dataout_jump + 4 | |
945 | ||
946 | at 0x000000b7 : */ 0xc0000004,0x00000000,0x000002f8, | |
947 | /* | |
948 | ||
949 | ; Time to correct DSA following memory move | |
950 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
951 | ||
952 | at 0x000000ba : */ 0xc0000004,0x00000000,0x00000000, | |
953 | /* | |
954 | ||
955 | dataout_jump: | |
956 | JUMP 0 | |
957 | ||
958 | at 0x000000bd : */ 0x80080000,0x00000000, | |
959 | /* | |
960 | ||
961 | ; Nasty jump to dsa->dsain | |
962 | do_datain: | |
963 | ||
964 | MOVE MEMORY 4, saved_dsa, addr_scratch | |
965 | ||
966 | at 0x000000bf : */ 0xc0000004,0x00000000,0x00000000, | |
967 | /* | |
968 | ||
969 | ||
970 | ||
971 | MOVE SCRATCH0 + dsa_datain TO SCRATCH0 | |
972 | ||
973 | at 0x000000c2 : */ 0x7e345400,0x00000000, | |
974 | /* | |
975 | MOVE SCRATCH1 + 0 TO SCRATCH1 WITH CARRY | |
976 | ||
977 | at 0x000000c4 : */ 0x7f350000,0x00000000, | |
978 | /* | |
979 | MOVE SCRATCH2 + 0 TO SCRATCH2 WITH CARRY | |
980 | ||
981 | at 0x000000c6 : */ 0x7f360000,0x00000000, | |
982 | /* | |
983 | MOVE SCRATCH3 + 0 TO SCRATCH3 WITH CARRY | |
984 | ||
985 | at 0x000000c8 : */ 0x7f370000,0x00000000, | |
986 | /* | |
987 | ||
988 | MOVE MEMORY 4, addr_scratch, datain_to_jump + 4 | |
989 | ||
990 | at 0x000000ca : */ 0xc0000004,0x00000000,0x00000338, | |
991 | /* | |
992 | ||
993 | ENTRY datain_to_jump | |
994 | datain_to_jump: | |
995 | MOVE MEMORY 4, 0, datain_jump + 4 | |
996 | ||
997 | at 0x000000cd : */ 0xc0000004,0x00000000,0x00000350, | |
998 | /* | |
999 | ||
1000 | ; Time to correct DSA following memory move | |
1001 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
1002 | ||
1003 | at 0x000000d0 : */ 0xc0000004,0x00000000,0x00000000, | |
1004 | /* | |
1005 | ||
1006 | ||
1007 | ||
1008 | ||
1009 | datain_jump: | |
1010 | JUMP 0 | |
1011 | ||
1012 | at 0x000000d3 : */ 0x80080000,0x00000000, | |
1013 | /* | |
1014 | ||
1015 | ||
1016 | ||
1017 | ; Note that other_out and other_in loop until a non-data phase | |
1018 | ; is discovered, so we only execute return statements when we | |
1019 | ; can go on to the next data phase block move statement. | |
1020 | ||
1021 | ENTRY other_out | |
1022 | other_out: | |
1023 | ||
1024 | ||
1025 | ||
1026 | INT int_err_unexpected_phase, WHEN CMD | |
1027 | ||
1028 | at 0x000000d5 : */ 0x9a0b0000,0x00000000, | |
1029 | /* | |
1030 | JUMP msg_in_restart, WHEN MSG_IN | |
1031 | ||
1032 | at 0x000000d7 : */ 0x870b0000,0x000003fc, | |
1033 | /* | |
1034 | INT int_err_unexpected_phase, WHEN MSG_OUT | |
1035 | ||
1036 | at 0x000000d9 : */ 0x9e0b0000,0x00000000, | |
1037 | /* | |
1038 | INT int_err_unexpected_phase, WHEN DATA_IN | |
1039 | ||
1040 | at 0x000000db : */ 0x990b0000,0x00000000, | |
1041 | /* | |
1042 | JUMP command_complete, WHEN STATUS | |
1043 | ||
1044 | at 0x000000dd : */ 0x830b0000,0x0000065c, | |
1045 | /* | |
1046 | JUMP other_out, WHEN NOT DATA_OUT | |
1047 | ||
1048 | at 0x000000df : */ 0x80030000,0x00000354, | |
1049 | /* | |
1050 | ||
1051 | ; TEMP should be OK, as we got here from a call in the user dataout code. | |
1052 | ||
1053 | RETURN | |
1054 | ||
1055 | at 0x000000e1 : */ 0x90080000,0x00000000, | |
1056 | /* | |
1057 | ||
1058 | ENTRY other_in | |
1059 | other_in: | |
1060 | ||
1061 | ||
1062 | ||
1063 | INT int_err_unexpected_phase, WHEN CMD | |
1064 | ||
1065 | at 0x000000e3 : */ 0x9a0b0000,0x00000000, | |
1066 | /* | |
1067 | JUMP msg_in_restart, WHEN MSG_IN | |
1068 | ||
1069 | at 0x000000e5 : */ 0x870b0000,0x000003fc, | |
1070 | /* | |
1071 | INT int_err_unexpected_phase, WHEN MSG_OUT | |
1072 | ||
1073 | at 0x000000e7 : */ 0x9e0b0000,0x00000000, | |
1074 | /* | |
1075 | INT int_err_unexpected_phase, WHEN DATA_OUT | |
1076 | ||
1077 | at 0x000000e9 : */ 0x980b0000,0x00000000, | |
1078 | /* | |
1079 | JUMP command_complete, WHEN STATUS | |
1080 | ||
1081 | at 0x000000eb : */ 0x830b0000,0x0000065c, | |
1082 | /* | |
1083 | JUMP other_in, WHEN NOT DATA_IN | |
1084 | ||
1085 | at 0x000000ed : */ 0x81030000,0x0000038c, | |
1086 | /* | |
1087 | ||
1088 | ; TEMP should be OK, as we got here from a call in the user datain code. | |
1089 | ||
1090 | RETURN | |
1091 | ||
1092 | at 0x000000ef : */ 0x90080000,0x00000000, | |
1093 | /* | |
1094 | ||
1095 | ||
1096 | ENTRY other_transfer | |
1097 | other_transfer: | |
1098 | INT int_err_unexpected_phase, WHEN CMD | |
1099 | ||
1100 | at 0x000000f1 : */ 0x9a0b0000,0x00000000, | |
1101 | /* | |
1102 | CALL msg_in, WHEN MSG_IN | |
1103 | ||
1104 | at 0x000000f3 : */ 0x8f0b0000,0x0000041c, | |
1105 | /* | |
1106 | INT int_err_unexpected_phase, WHEN MSG_OUT | |
1107 | ||
1108 | at 0x000000f5 : */ 0x9e0b0000,0x00000000, | |
1109 | /* | |
1110 | INT int_err_unexpected_phase, WHEN DATA_OUT | |
1111 | ||
1112 | at 0x000000f7 : */ 0x980b0000,0x00000000, | |
1113 | /* | |
1114 | INT int_err_unexpected_phase, WHEN DATA_IN | |
1115 | ||
1116 | at 0x000000f9 : */ 0x990b0000,0x00000000, | |
1117 | /* | |
1118 | JUMP command_complete, WHEN STATUS | |
1119 | ||
1120 | at 0x000000fb : */ 0x830b0000,0x0000065c, | |
1121 | /* | |
1122 | JUMP other_transfer | |
1123 | ||
1124 | at 0x000000fd : */ 0x80080000,0x000003c4, | |
1125 | /* | |
1126 | ||
1127 | ; | |
1128 | ; msg_in_restart | |
1129 | ; msg_in | |
1130 | ; munge_msg | |
1131 | ; | |
1132 | ; PURPOSE : process messages from a target. msg_in is called when the | |
1133 | ; caller hasn't read the first byte of the message. munge_message | |
1134 | ; is called when the caller has read the first byte of the message, | |
1135 | ; and left it in SFBR. msg_in_restart is called when the caller | |
1136 | ; hasn't read the first byte of the message, and wishes RETURN | |
1137 | ; to transfer control back to the address of the conditional | |
1138 | ; CALL instruction rather than to the instruction after it. | |
1139 | ; | |
1140 | ; Various int_* interrupts are generated when the host system | |
1141 | ; needs to intervene, as is the case with SDTR, WDTR, and | |
1142 | ; INITIATE RECOVERY messages. | |
1143 | ; | |
1144 | ; When the host system handles one of these interrupts, | |
1145 | ; it can respond by reentering at reject_message, | |
1146 | ; which rejects the message and returns control to | |
1147 | ; the caller of msg_in or munge_msg, accept_message | |
1148 | ; which clears ACK and returns control, or reply_message | |
1149 | ; which sends the message pointed to by the DSA | |
1150 | ; msgout_other table indirect field. | |
1151 | ; | |
1152 | ; DISCONNECT messages are handled by moving the command | |
1153 | ; to the reconnect_dsa_queue. | |
1154 | ||
1155 | ; NOTE: DSA should be valid when we get here - we cannot save both it | |
1156 | ; and TEMP in this routine. | |
1157 | ||
1158 | ; | |
1159 | ; INPUTS : DSA - SCSI COMMAND, SFBR - first byte of message (munge_msg | |
1160 | ; only) | |
1161 | ; | |
1162 | ; CALLS : NO. The TEMP register isn't backed up to allow nested calls. | |
1163 | ; | |
1164 | ; MODIFIES : SCRATCH, DSA on DISCONNECT | |
1165 | ; | |
1166 | ; EXITS : On receipt of SAVE DATA POINTER, RESTORE POINTERS, | |
1167 | ; and normal return from message handlers running under | |
1168 | ; Linux, control is returned to the caller. Receipt | |
1169 | ; of DISCONNECT messages pass control to dsa_schedule. | |
1170 | ; | |
1171 | ENTRY msg_in_restart | |
1172 | msg_in_restart: | |
1173 | ; XXX - hackish | |
1174 | ; | |
1175 | ; Since it's easier to debug changes to the statically | |
1176 | ; compiled code, rather than the dynamically generated | |
1177 | ; stuff, such as | |
1178 | ; | |
1179 | ; MOVE x, y, WHEN data_phase | |
1180 | ; CALL other_z, WHEN NOT data_phase | |
1181 | ; MOVE x, y, WHEN data_phase | |
1182 | ; | |
1183 | ; I'd like to have certain routines (notably the message handler) | |
1184 | ; restart on the conditional call rather than the next instruction. | |
1185 | ; | |
1186 | ; So, subtract 8 from the return address | |
1187 | ||
1188 | MOVE TEMP0 + 0xf8 TO TEMP0 | |
1189 | ||
1190 | at 0x000000ff : */ 0x7e1cf800,0x00000000, | |
1191 | /* | |
1192 | MOVE TEMP1 + 0xff TO TEMP1 WITH CARRY | |
1193 | ||
1194 | at 0x00000101 : */ 0x7f1dff00,0x00000000, | |
1195 | /* | |
1196 | MOVE TEMP2 + 0xff TO TEMP2 WITH CARRY | |
1197 | ||
1198 | at 0x00000103 : */ 0x7f1eff00,0x00000000, | |
1199 | /* | |
1200 | MOVE TEMP3 + 0xff TO TEMP3 WITH CARRY | |
1201 | ||
1202 | at 0x00000105 : */ 0x7f1fff00,0x00000000, | |
1203 | /* | |
1204 | ||
1205 | ENTRY msg_in | |
1206 | msg_in: | |
1207 | MOVE 1, msg_buf, WHEN MSG_IN | |
1208 | ||
1209 | at 0x00000107 : */ 0x0f000001,0x00000000, | |
1210 | /* | |
1211 | ||
1212 | munge_msg: | |
1213 | JUMP munge_extended, IF 0x01 ; EXTENDED MESSAGE | |
1214 | ||
1215 | at 0x00000109 : */ 0x800c0001,0x00000574, | |
1216 | /* | |
1217 | JUMP munge_2, IF 0x20, AND MASK 0xdf ; two byte message | |
1218 | ||
1219 | at 0x0000010b : */ 0x800cdf20,0x00000464, | |
1220 | /* | |
1221 | ; | |
1222 | ; XXX - I've seen a handful of broken SCSI devices which fail to issue | |
1223 | ; a SAVE POINTERS message before disconnecting in the middle of | |
1224 | ; a transfer, assuming that the DATA POINTER will be implicitly | |
1225 | ; restored. | |
1226 | ; | |
1227 | ; Historically, I've often done an implicit save when the DISCONNECT | |
1228 | ; message is processed. We may want to consider having the option of | |
1229 | ; doing that here. | |
1230 | ; | |
1231 | JUMP munge_save_data_pointer, IF 0x02 ; SAVE DATA POINTER | |
1232 | ||
1233 | at 0x0000010d : */ 0x800c0002,0x0000046c, | |
1234 | /* | |
1235 | JUMP munge_restore_pointers, IF 0x03 ; RESTORE POINTERS | |
1236 | ||
1237 | at 0x0000010f : */ 0x800c0003,0x00000518, | |
1238 | /* | |
1239 | JUMP munge_disconnect, IF 0x04 ; DISCONNECT | |
1240 | ||
1241 | at 0x00000111 : */ 0x800c0004,0x0000056c, | |
1242 | /* | |
1243 | INT int_msg_1, IF 0x07 ; MESSAGE REJECT | |
1244 | ||
1245 | at 0x00000113 : */ 0x980c0007,0x01020000, | |
1246 | /* | |
1247 | INT int_msg_1, IF 0x0f ; INITIATE RECOVERY | |
1248 | ||
1249 | at 0x00000115 : */ 0x980c000f,0x01020000, | |
1250 | /* | |
1251 | ||
1252 | ||
1253 | ||
1254 | JUMP reject_message | |
1255 | ||
1256 | at 0x00000117 : */ 0x80080000,0x00000604, | |
1257 | /* | |
1258 | ||
1259 | munge_2: | |
1260 | JUMP reject_message | |
1261 | ||
1262 | at 0x00000119 : */ 0x80080000,0x00000604, | |
1263 | /* | |
1264 | ; | |
1265 | ; The SCSI standard allows targets to recover from transient | |
1266 | ; error conditions by backing up the data pointer with a | |
1267 | ; RESTORE POINTERS message. | |
1268 | ; | |
1269 | ; So, we must save and restore the _residual_ code as well as | |
1270 | ; the current instruction pointer. Because of this messiness, | |
1271 | ; it is simpler to put dynamic code in the dsa for this and to | |
1272 | ; just do a simple jump down there. | |
1273 | ; | |
1274 | ||
1275 | munge_save_data_pointer: | |
1276 | ||
1277 | ; We have something in TEMP here, so first we must save that | |
1278 | MOVE TEMP0 TO SFBR | |
1279 | ||
1280 | at 0x0000011b : */ 0x721c0000,0x00000000, | |
1281 | /* | |
1282 | MOVE SFBR TO SCRATCH0 | |
1283 | ||
1284 | at 0x0000011d : */ 0x6a340000,0x00000000, | |
1285 | /* | |
1286 | MOVE TEMP1 TO SFBR | |
1287 | ||
1288 | at 0x0000011f : */ 0x721d0000,0x00000000, | |
1289 | /* | |
1290 | MOVE SFBR TO SCRATCH1 | |
1291 | ||
1292 | at 0x00000121 : */ 0x6a350000,0x00000000, | |
1293 | /* | |
1294 | MOVE TEMP2 TO SFBR | |
1295 | ||
1296 | at 0x00000123 : */ 0x721e0000,0x00000000, | |
1297 | /* | |
1298 | MOVE SFBR TO SCRATCH2 | |
1299 | ||
1300 | at 0x00000125 : */ 0x6a360000,0x00000000, | |
1301 | /* | |
1302 | MOVE TEMP3 TO SFBR | |
1303 | ||
1304 | at 0x00000127 : */ 0x721f0000,0x00000000, | |
1305 | /* | |
1306 | MOVE SFBR TO SCRATCH3 | |
1307 | ||
1308 | at 0x00000129 : */ 0x6a370000,0x00000000, | |
1309 | /* | |
1310 | MOVE MEMORY 4, addr_scratch, jump_temp + 4 | |
1311 | ||
1312 | at 0x0000012b : */ 0xc0000004,0x00000000,0x000009c8, | |
1313 | /* | |
1314 | ; Now restore DSA | |
1315 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
1316 | ||
1317 | at 0x0000012e : */ 0xc0000004,0x00000000,0x00000000, | |
1318 | /* | |
1319 | ||
1320 | MOVE DSA0 + dsa_save_data_pointer TO SFBR | |
1321 | ||
1322 | at 0x00000131 : */ 0x76100000,0x00000000, | |
1323 | /* | |
1324 | MOVE SFBR TO SCRATCH0 | |
1325 | ||
1326 | at 0x00000133 : */ 0x6a340000,0x00000000, | |
1327 | /* | |
1328 | MOVE DSA1 + 0xff TO SFBR WITH CARRY | |
1329 | ||
1330 | at 0x00000135 : */ 0x7711ff00,0x00000000, | |
1331 | /* | |
1332 | MOVE SFBR TO SCRATCH1 | |
1333 | ||
1334 | at 0x00000137 : */ 0x6a350000,0x00000000, | |
1335 | /* | |
1336 | MOVE DSA2 + 0xff TO SFBR WITH CARRY | |
1337 | ||
1338 | at 0x00000139 : */ 0x7712ff00,0x00000000, | |
1339 | /* | |
1340 | MOVE SFBR TO SCRATCH2 | |
1341 | ||
1342 | at 0x0000013b : */ 0x6a360000,0x00000000, | |
1343 | /* | |
1344 | MOVE DSA3 + 0xff TO SFBR WITH CARRY | |
1345 | ||
1346 | at 0x0000013d : */ 0x7713ff00,0x00000000, | |
1347 | /* | |
1348 | MOVE SFBR TO SCRATCH3 | |
1349 | ||
1350 | at 0x0000013f : */ 0x6a370000,0x00000000, | |
1351 | /* | |
1352 | ||
1353 | ||
1354 | MOVE MEMORY 4, addr_scratch, jump_dsa_save + 4 | |
1355 | ||
1356 | at 0x00000141 : */ 0xc0000004,0x00000000,0x00000514, | |
1357 | /* | |
1358 | ||
1359 | jump_dsa_save: | |
1360 | JUMP 0 | |
1361 | ||
1362 | at 0x00000144 : */ 0x80080000,0x00000000, | |
1363 | /* | |
1364 | ||
1365 | munge_restore_pointers: | |
1366 | ||
1367 | ; The code at dsa_restore_pointers will RETURN, but we don't care | |
1368 | ; about TEMP here, as it will overwrite it anyway. | |
1369 | ||
1370 | MOVE DSA0 + dsa_restore_pointers TO SFBR | |
1371 | ||
1372 | at 0x00000146 : */ 0x76100000,0x00000000, | |
1373 | /* | |
1374 | MOVE SFBR TO SCRATCH0 | |
1375 | ||
1376 | at 0x00000148 : */ 0x6a340000,0x00000000, | |
1377 | /* | |
1378 | MOVE DSA1 + 0xff TO SFBR WITH CARRY | |
1379 | ||
1380 | at 0x0000014a : */ 0x7711ff00,0x00000000, | |
1381 | /* | |
1382 | MOVE SFBR TO SCRATCH1 | |
1383 | ||
1384 | at 0x0000014c : */ 0x6a350000,0x00000000, | |
1385 | /* | |
1386 | MOVE DSA2 + 0xff TO SFBR WITH CARRY | |
1387 | ||
1388 | at 0x0000014e : */ 0x7712ff00,0x00000000, | |
1389 | /* | |
1390 | MOVE SFBR TO SCRATCH2 | |
1391 | ||
1392 | at 0x00000150 : */ 0x6a360000,0x00000000, | |
1393 | /* | |
1394 | MOVE DSA3 + 0xff TO SFBR WITH CARRY | |
1395 | ||
1396 | at 0x00000152 : */ 0x7713ff00,0x00000000, | |
1397 | /* | |
1398 | MOVE SFBR TO SCRATCH3 | |
1399 | ||
1400 | at 0x00000154 : */ 0x6a370000,0x00000000, | |
1401 | /* | |
1402 | ||
1403 | ||
1404 | MOVE MEMORY 4, addr_scratch, jump_dsa_restore + 4 | |
1405 | ||
1406 | at 0x00000156 : */ 0xc0000004,0x00000000,0x00000568, | |
1407 | /* | |
1408 | ||
1409 | jump_dsa_restore: | |
1410 | JUMP 0 | |
1411 | ||
1412 | at 0x00000159 : */ 0x80080000,0x00000000, | |
1413 | /* | |
1414 | ||
1415 | ||
1416 | munge_disconnect: | |
1417 | ||
1418 | ||
1419 | ||
1420 | ||
1421 | ||
1422 | ||
1423 | ||
1424 | ||
1425 | ||
1426 | ||
1427 | ||
1428 | ||
1429 | ||
1430 | ||
1431 | ||
1432 | ||
1433 | ||
1434 | ||
1435 | ||
1436 | ||
1437 | JUMP dsa_schedule | |
1438 | ||
1439 | at 0x0000015b : */ 0x80080000,0x00000178, | |
1440 | /* | |
1441 | ||
1442 | ||
1443 | ||
1444 | ||
1445 | ||
1446 | munge_extended: | |
1447 | CLEAR ACK | |
1448 | ||
1449 | at 0x0000015d : */ 0x60000040,0x00000000, | |
1450 | /* | |
1451 | INT int_err_unexpected_phase, WHEN NOT MSG_IN | |
1452 | ||
1453 | at 0x0000015f : */ 0x9f030000,0x00000000, | |
1454 | /* | |
1455 | MOVE 1, msg_buf + 1, WHEN MSG_IN | |
1456 | ||
1457 | at 0x00000161 : */ 0x0f000001,0x00000001, | |
1458 | /* | |
1459 | JUMP munge_extended_2, IF 0x02 | |
1460 | ||
1461 | at 0x00000163 : */ 0x800c0002,0x000005a4, | |
1462 | /* | |
1463 | JUMP munge_extended_3, IF 0x03 | |
1464 | ||
1465 | at 0x00000165 : */ 0x800c0003,0x000005d4, | |
1466 | /* | |
1467 | JUMP reject_message | |
1468 | ||
1469 | at 0x00000167 : */ 0x80080000,0x00000604, | |
1470 | /* | |
1471 | ||
1472 | munge_extended_2: | |
1473 | CLEAR ACK | |
1474 | ||
1475 | at 0x00000169 : */ 0x60000040,0x00000000, | |
1476 | /* | |
1477 | MOVE 1, msg_buf + 2, WHEN MSG_IN | |
1478 | ||
1479 | at 0x0000016b : */ 0x0f000001,0x00000002, | |
1480 | /* | |
1481 | JUMP reject_message, IF NOT 0x02 ; Must be WDTR | |
1482 | ||
1483 | at 0x0000016d : */ 0x80040002,0x00000604, | |
1484 | /* | |
1485 | CLEAR ACK | |
1486 | ||
1487 | at 0x0000016f : */ 0x60000040,0x00000000, | |
1488 | /* | |
1489 | MOVE 1, msg_buf + 3, WHEN MSG_IN | |
1490 | ||
1491 | at 0x00000171 : */ 0x0f000001,0x00000003, | |
1492 | /* | |
1493 | INT int_msg_wdtr | |
1494 | ||
1495 | at 0x00000173 : */ 0x98080000,0x01000000, | |
1496 | /* | |
1497 | ||
1498 | munge_extended_3: | |
1499 | CLEAR ACK | |
1500 | ||
1501 | at 0x00000175 : */ 0x60000040,0x00000000, | |
1502 | /* | |
1503 | MOVE 1, msg_buf + 2, WHEN MSG_IN | |
1504 | ||
1505 | at 0x00000177 : */ 0x0f000001,0x00000002, | |
1506 | /* | |
1507 | JUMP reject_message, IF NOT 0x01 ; Must be SDTR | |
1508 | ||
1509 | at 0x00000179 : */ 0x80040001,0x00000604, | |
1510 | /* | |
1511 | CLEAR ACK | |
1512 | ||
1513 | at 0x0000017b : */ 0x60000040,0x00000000, | |
1514 | /* | |
1515 | MOVE 2, msg_buf + 3, WHEN MSG_IN | |
1516 | ||
1517 | at 0x0000017d : */ 0x0f000002,0x00000003, | |
1518 | /* | |
1519 | INT int_msg_sdtr | |
1520 | ||
1521 | at 0x0000017f : */ 0x98080000,0x01010000, | |
1522 | /* | |
1523 | ||
1524 | ENTRY reject_message | |
1525 | reject_message: | |
1526 | SET ATN | |
1527 | ||
1528 | at 0x00000181 : */ 0x58000008,0x00000000, | |
1529 | /* | |
1530 | CLEAR ACK | |
1531 | ||
1532 | at 0x00000183 : */ 0x60000040,0x00000000, | |
1533 | /* | |
1534 | MOVE 1, NCR53c7xx_msg_reject, WHEN MSG_OUT | |
1535 | ||
1536 | at 0x00000185 : */ 0x0e000001,0x00000000, | |
1537 | /* | |
1538 | RETURN | |
1539 | ||
1540 | at 0x00000187 : */ 0x90080000,0x00000000, | |
1541 | /* | |
1542 | ||
1543 | ENTRY accept_message | |
1544 | accept_message: | |
1545 | CLEAR ATN | |
1546 | ||
1547 | at 0x00000189 : */ 0x60000008,0x00000000, | |
1548 | /* | |
1549 | CLEAR ACK | |
1550 | ||
1551 | at 0x0000018b : */ 0x60000040,0x00000000, | |
1552 | /* | |
1553 | RETURN | |
1554 | ||
1555 | at 0x0000018d : */ 0x90080000,0x00000000, | |
1556 | /* | |
1557 | ||
1558 | ENTRY respond_message | |
1559 | respond_message: | |
1560 | SET ATN | |
1561 | ||
1562 | at 0x0000018f : */ 0x58000008,0x00000000, | |
1563 | /* | |
1564 | CLEAR ACK | |
1565 | ||
1566 | at 0x00000191 : */ 0x60000040,0x00000000, | |
1567 | /* | |
1568 | MOVE FROM dsa_msgout_other, WHEN MSG_OUT | |
1569 | ||
1570 | at 0x00000193 : */ 0x1e000000,0x00000068, | |
1571 | /* | |
1572 | RETURN | |
1573 | ||
1574 | at 0x00000195 : */ 0x90080000,0x00000000, | |
1575 | /* | |
1576 | ||
1577 | ; | |
1578 | ; command_complete | |
1579 | ; | |
1580 | ; PURPOSE : handle command termination when STATUS IN is detected by reading | |
1581 | ; a status byte followed by a command termination message. | |
1582 | ; | |
1583 | ; Normal termination results in an INTFLY instruction, and | |
1584 | ; the host system can pick out which command terminated by | |
1585 | ; examining the MESSAGE and STATUS buffers of all currently | |
1586 | ; executing commands; | |
1587 | ; | |
1588 | ; Abnormal (CHECK_CONDITION) termination results in an | |
1589 | ; int_err_check_condition interrupt so that a REQUEST SENSE | |
1590 | ; command can be issued out-of-order so that no other command | |
1591 | ; clears the contingent allegiance condition. | |
1592 | ; | |
1593 | ; | |
1594 | ; INPUTS : DSA - command | |
1595 | ; | |
1596 | ; CALLS : OK | |
1597 | ; | |
1598 | ; EXITS : On successful termination, control is passed to schedule. | |
1599 | ; On abnormal termination, the user will usually modify the | |
1600 | ; DSA fields and corresponding buffers and return control | |
1601 | ; to select. | |
1602 | ; | |
1603 | ||
1604 | ENTRY command_complete | |
1605 | command_complete: | |
1606 | MOVE FROM dsa_status, WHEN STATUS | |
1607 | ||
1608 | at 0x00000197 : */ 0x1b000000,0x00000060, | |
1609 | /* | |
1610 | ||
1611 | MOVE SFBR TO SCRATCH0 ; Save status | |
1612 | ||
1613 | at 0x00000199 : */ 0x6a340000,0x00000000, | |
1614 | /* | |
1615 | ||
1616 | ENTRY command_complete_msgin | |
1617 | command_complete_msgin: | |
1618 | MOVE FROM dsa_msgin, WHEN MSG_IN | |
1619 | ||
1620 | at 0x0000019b : */ 0x1f000000,0x00000058, | |
1621 | /* | |
1622 | ; Indicate that we should be expecting a disconnect | |
1623 | ||
1624 | ||
1625 | ||
1626 | ; Above code cleared the Unexpected Disconnect bit, what do we do? | |
1627 | ||
1628 | CLEAR ACK | |
1629 | ||
1630 | at 0x0000019d : */ 0x60000040,0x00000000, | |
1631 | /* | |
1632 | ||
1633 | WAIT DISCONNECT | |
1634 | ||
1635 | at 0x0000019f : */ 0x48000000,0x00000000, | |
1636 | /* | |
1637 | ||
1638 | ; | |
1639 | ; The SCSI specification states that when a UNIT ATTENTION condition | |
1640 | ; is pending, as indicated by a CHECK CONDITION status message, | |
1641 | ; the target shall revert to asynchronous transfers. Since | |
1642 | ; synchronous transfers parameters are maintained on a per INITIATOR/TARGET | |
1643 | ; basis, and returning control to our scheduler could work on a command | |
1644 | ; running on another lun on that target using the old parameters, we must | |
1645 | ; interrupt the host processor to get them changed, or change them ourselves. | |
1646 | ; | |
1647 | ; Once SCSI-II tagged queueing is implemented, things will be even more | |
1648 | ; hairy, since contingent allegiance conditions exist on a per-target/lun | |
1649 | ; basis, and issuing a new command with a different tag would clear it. | |
1650 | ; In these cases, we must interrupt the host processor to get a request | |
1651 | ; added to the HEAD of the queue with the request sense command, or we | |
1652 | ; must automatically issue the request sense command. | |
1653 | ||
1654 | ||
1655 | ||
1656 | ||
1657 | ||
1658 | ||
1659 | ||
1660 | INT int_norm_emulateintfly | |
1661 | ||
1662 | at 0x000001a1 : */ 0x98080000,0x02060000, | |
1663 | /* | |
1664 | ||
1665 | ||
1666 | ||
1667 | ||
1668 | ||
1669 | ||
1670 | ; Time to correct DSA following memory move | |
1671 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
1672 | ||
1673 | at 0x000001a3 : */ 0xc0000004,0x00000000,0x00000000, | |
1674 | /* | |
1675 | ||
1676 | ||
1677 | ||
1678 | ||
1679 | ||
1680 | JUMP schedule | |
1681 | ||
1682 | at 0x000001a6 : */ 0x80080000,0x00000000, | |
1683 | /* | |
1684 | command_failed: | |
1685 | INT int_err_check_condition | |
1686 | ||
1687 | at 0x000001a8 : */ 0x98080000,0x00030000, | |
1688 | /* | |
1689 | ||
1690 | ||
1691 | ||
1692 | ||
1693 | ; | |
1694 | ; wait_reselect | |
1695 | ; | |
1696 | ; PURPOSE : This is essentially the idle routine, where control lands | |
1697 | ; when there are no new processes to schedule. wait_reselect | |
1698 | ; waits for reselection, selection, and new commands. | |
1699 | ; | |
1700 | ; When a successful reselection occurs, with the aid | |
1701 | ; of fixed up code in each DSA, wait_reselect walks the | |
1702 | ; reconnect_dsa_queue, asking each dsa if the target ID | |
1703 | ; and LUN match its. | |
1704 | ; | |
1705 | ; If a match is found, a call is made back to reselected_ok, | |
1706 | ; which through the miracles of self modifying code, extracts | |
1707 | ; the found DSA from the reconnect_dsa_queue and then | |
1708 | ; returns control to the DSAs thread of execution. | |
1709 | ; | |
1710 | ; INPUTS : NONE | |
1711 | ; | |
1712 | ; CALLS : OK | |
1713 | ; | |
1714 | ; MODIFIES : DSA, | |
1715 | ; | |
1716 | ; EXITS : On successful reselection, control is returned to the | |
1717 | ; DSA which called reselected_ok. If the WAIT RESELECT | |
1718 | ; was interrupted by a new commands arrival signaled by | |
1719 | ; SIG_P, control is passed to schedule. If the NCR is | |
1720 | ; selected, the host system is interrupted with an | |
1721 | ; int_err_selected which is usually responded to by | |
1722 | ; setting DSP to the target_abort address. | |
1723 | ||
1724 | ENTRY wait_reselect | |
1725 | wait_reselect: | |
1726 | ||
1727 | ||
1728 | ||
1729 | ||
1730 | ||
1731 | ||
1732 | WAIT RESELECT wait_reselect_failed | |
1733 | ||
1734 | at 0x000001aa : */ 0x50000000,0x00000800, | |
1735 | /* | |
1736 | ||
1737 | reselected: | |
1738 | ||
1739 | ||
1740 | ||
1741 | CLEAR TARGET | |
1742 | ||
1743 | at 0x000001ac : */ 0x60000200,0x00000000, | |
1744 | /* | |
1745 | ||
1746 | ; Read all data needed to reestablish the nexus - | |
1747 | MOVE 1, reselected_identify, WHEN MSG_IN | |
1748 | ||
1749 | at 0x000001ae : */ 0x0f000001,0x00000000, | |
1750 | /* | |
1751 | ; We used to CLEAR ACK here. | |
1752 | ||
1753 | ||
1754 | ||
1755 | ||
1756 | ||
1757 | ; Point DSA at the current head of the disconnected queue. | |
1758 | ||
1759 | MOVE MEMORY 4, reconnect_dsa_head, addr_scratch | |
1760 | ||
1761 | at 0x000001b0 : */ 0xc0000004,0x00000000,0x00000000, | |
1762 | /* | |
1763 | ||
1764 | ||
1765 | MOVE MEMORY 4, addr_scratch, saved_dsa | |
1766 | ||
1767 | at 0x000001b3 : */ 0xc0000004,0x00000000,0x00000000, | |
1768 | /* | |
1769 | ||
1770 | ||
1771 | ||
1772 | ||
1773 | ; Fix the update-next pointer so that the reconnect_dsa_head | |
1774 | ; pointer is the one that will be updated if this DSA is a hit | |
1775 | ; and we remove it from the queue. | |
1776 | ||
1777 | MOVE MEMORY 4, addr_reconnect_dsa_head, reselected_ok_patch + 8 | |
1778 | ||
1779 | at 0x000001b6 : */ 0xc0000004,0x00000000,0x000007ec, | |
1780 | /* | |
1781 | ||
1782 | ; Time to correct DSA following memory move | |
1783 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
1784 | ||
1785 | at 0x000001b9 : */ 0xc0000004,0x00000000,0x00000000, | |
1786 | /* | |
1787 | ||
1788 | ||
1789 | ENTRY reselected_check_next | |
1790 | reselected_check_next: | |
1791 | ||
1792 | ||
1793 | ||
1794 | ; Check for a NULL pointer. | |
1795 | MOVE DSA0 TO SFBR | |
1796 | ||
1797 | at 0x000001bc : */ 0x72100000,0x00000000, | |
1798 | /* | |
1799 | JUMP reselected_not_end, IF NOT 0 | |
1800 | ||
1801 | at 0x000001be : */ 0x80040000,0x00000738, | |
1802 | /* | |
1803 | MOVE DSA1 TO SFBR | |
1804 | ||
1805 | at 0x000001c0 : */ 0x72110000,0x00000000, | |
1806 | /* | |
1807 | JUMP reselected_not_end, IF NOT 0 | |
1808 | ||
1809 | at 0x000001c2 : */ 0x80040000,0x00000738, | |
1810 | /* | |
1811 | MOVE DSA2 TO SFBR | |
1812 | ||
1813 | at 0x000001c4 : */ 0x72120000,0x00000000, | |
1814 | /* | |
1815 | JUMP reselected_not_end, IF NOT 0 | |
1816 | ||
1817 | at 0x000001c6 : */ 0x80040000,0x00000738, | |
1818 | /* | |
1819 | MOVE DSA3 TO SFBR | |
1820 | ||
1821 | at 0x000001c8 : */ 0x72130000,0x00000000, | |
1822 | /* | |
1823 | JUMP reselected_not_end, IF NOT 0 | |
1824 | ||
1825 | at 0x000001ca : */ 0x80040000,0x00000738, | |
1826 | /* | |
1827 | INT int_err_unexpected_reselect | |
1828 | ||
1829 | at 0x000001cc : */ 0x98080000,0x00020000, | |
1830 | /* | |
1831 | ||
1832 | reselected_not_end: | |
1833 | ; | |
1834 | ; XXX the ALU is only eight bits wide, and the assembler | |
1835 | ; wont do the dirt work for us. As long as dsa_check_reselect | |
1836 | ; is negative, we need to sign extend with 1 bits to the full | |
1837 | ; 32 bit width of the address. | |
1838 | ; | |
1839 | ; A potential work around would be to have a known alignment | |
1840 | ; of the DSA structure such that the base address plus | |
1841 | ; dsa_check_reselect doesn't require carrying from bytes | |
1842 | ; higher than the LSB. | |
1843 | ; | |
1844 | ||
1845 | MOVE DSA0 TO SFBR | |
1846 | ||
1847 | at 0x000001ce : */ 0x72100000,0x00000000, | |
1848 | /* | |
1849 | MOVE SFBR + dsa_check_reselect TO SCRATCH0 | |
1850 | ||
1851 | at 0x000001d0 : */ 0x6e340000,0x00000000, | |
1852 | /* | |
1853 | MOVE DSA1 TO SFBR | |
1854 | ||
1855 | at 0x000001d2 : */ 0x72110000,0x00000000, | |
1856 | /* | |
1857 | MOVE SFBR + 0xff TO SCRATCH1 WITH CARRY | |
1858 | ||
1859 | at 0x000001d4 : */ 0x6f35ff00,0x00000000, | |
1860 | /* | |
1861 | MOVE DSA2 TO SFBR | |
1862 | ||
1863 | at 0x000001d6 : */ 0x72120000,0x00000000, | |
1864 | /* | |
1865 | MOVE SFBR + 0xff TO SCRATCH2 WITH CARRY | |
1866 | ||
1867 | at 0x000001d8 : */ 0x6f36ff00,0x00000000, | |
1868 | /* | |
1869 | MOVE DSA3 TO SFBR | |
1870 | ||
1871 | at 0x000001da : */ 0x72130000,0x00000000, | |
1872 | /* | |
1873 | MOVE SFBR + 0xff TO SCRATCH3 WITH CARRY | |
1874 | ||
1875 | at 0x000001dc : */ 0x6f37ff00,0x00000000, | |
1876 | /* | |
1877 | ||
1878 | ||
1879 | MOVE MEMORY 4, addr_scratch, reselected_check + 4 | |
1880 | ||
1881 | at 0x000001de : */ 0xc0000004,0x00000000,0x00000794, | |
1882 | /* | |
1883 | ||
1884 | ||
1885 | ; Time to correct DSA following memory move | |
1886 | MOVE MEMORY 4, saved_dsa, addr_dsa | |
1887 | ||
1888 | at 0x000001e1 : */ 0xc0000004,0x00000000,0x00000000, | |
1889 | /* | |
1890 | ||
1891 | reselected_check: | |
1892 | JUMP 0 | |
1893 | ||
1894 | at 0x000001e4 : */ 0x80080000,0x00000000, | |
1895 | /* | |
1896 | ||
1897 | ||
1898 | ; | |
1899 | ; | |
1900 | ||
1901 | ; We have problems here - the memory move corrupts TEMP and DSA. This | |
1902 | ; routine is called from DSA code, and patched from many places. Scratch | |
1903 | ; is probably free when it is called. | |
1904 | ; We have to: | |
1905 | ; copy temp to scratch, one byte at a time | |
1906 | ; write scratch to patch a jump in place of the return | |
1907 | ; do the move memory | |
1908 | ; jump to the patched in return address | |
1909 | ; DSA is corrupt when we get here, and can be left corrupt | |
1910 | ||
1911 | ENTRY reselected_ok | |
1912 | reselected_ok: | |
1913 | MOVE TEMP0 TO SFBR | |
1914 | ||
1915 | at 0x000001e6 : */ 0x721c0000,0x00000000, | |
1916 | /* | |
1917 | MOVE SFBR TO SCRATCH0 | |
1918 | ||
1919 | at 0x000001e8 : */ 0x6a340000,0x00000000, | |
1920 | /* | |
1921 | MOVE TEMP1 TO SFBR | |
1922 | ||
1923 | at 0x000001ea : */ 0x721d0000,0x00000000, | |
1924 | /* | |
1925 | MOVE SFBR TO SCRATCH1 | |
1926 | ||
1927 | at 0x000001ec : */ 0x6a350000,0x00000000, | |
1928 | /* | |
1929 | MOVE TEMP2 TO SFBR | |
1930 | ||
1931 | at 0x000001ee : */ 0x721e0000,0x00000000, | |
1932 | /* | |
1933 | MOVE SFBR TO SCRATCH2 | |
1934 | ||
1935 | at 0x000001f0 : */ 0x6a360000,0x00000000, | |
1936 | /* | |
1937 | MOVE TEMP3 TO SFBR | |
1938 | ||
1939 | at 0x000001f2 : */ 0x721f0000,0x00000000, | |
1940 | /* | |
1941 | MOVE SFBR TO SCRATCH3 | |
1942 | ||
1943 | at 0x000001f4 : */ 0x6a370000,0x00000000, | |
1944 | /* | |
1945 | MOVE MEMORY 4, addr_scratch, reselected_ok_jump + 4 | |
1946 | ||
1947 | at 0x000001f6 : */ 0xc0000004,0x00000000,0x000007f4, | |
1948 | /* | |
1949 | reselected_ok_patch: | |
1950 | MOVE MEMORY 4, 0, 0 | |
1951 | ||
1952 | at 0x000001f9 : */ 0xc0000004,0x00000000,0x00000000, | |
1953 | /* | |
1954 | reselected_ok_jump: | |
1955 | JUMP 0 | |
1956 | ||
1957 | at 0x000001fc : */ 0x80080000,0x00000000, | |
1958 | /* | |
1959 | ||
1960 | ||
1961 | ||
1962 | ||
1963 | ||
1964 | selected: | |
1965 | INT int_err_selected; | |
1966 | ||
1967 | at 0x000001fe : */ 0x98080000,0x00010000, | |
1968 | /* | |
1969 | ||
1970 | ; | |
1971 | ; A select or reselect failure can be caused by one of two conditions : | |
1972 | ; 1. SIG_P was set. This will be the case if the user has written | |
1973 | ; a new value to a previously NULL head of the issue queue. | |
1974 | ; | |
1975 | ; 2. The NCR53c810 was selected or reselected by another device. | |
1976 | ; | |
1977 | ; 3. The bus was already busy since we were selected or reselected | |
1978 | ; before starting the command. | |
1979 | ||
1980 | wait_reselect_failed: | |
1981 | ||
1982 | ||
1983 | ||
1984 | ; Check selected bit. | |
1985 | ||
1986 | ; Must work out how to tell if we are selected.... | |
1987 | ||
1988 | ||
1989 | ||
1990 | ||
1991 | ; Reading CTEST2 clears the SIG_P bit in the ISTAT register. | |
1992 | MOVE CTEST2 & 0x40 TO SFBR | |
1993 | ||
1994 | at 0x00000200 : */ 0x74164000,0x00000000, | |
1995 | /* | |
1996 | JUMP schedule, IF 0x40 | |
1997 | ||
1998 | at 0x00000202 : */ 0x800c0040,0x00000000, | |
1999 | /* | |
2000 | ; Check connected bit. | |
2001 | ; FIXME: this needs to change if we support target mode | |
2002 | MOVE ISTAT & 0x08 TO SFBR | |
2003 | ||
2004 | at 0x00000204 : */ 0x74210800,0x00000000, | |
2005 | /* | |
2006 | JUMP reselected, IF 0x08 | |
2007 | ||
2008 | at 0x00000206 : */ 0x800c0008,0x000006b0, | |
2009 | /* | |
2010 | ; FIXME : Something bogus happened, and we shouldn't fail silently. | |
2011 | ||
2012 | ||
2013 | ||
2014 | INT int_debug_panic | |
2015 | ||
2016 | at 0x00000208 : */ 0x98080000,0x030b0000, | |
2017 | /* | |
2018 | ||
2019 | ||
2020 | ||
2021 | select_failed: | |
2022 | ||
2023 | ; Disable selection timer | |
2024 | MOVE CTEST7 | 0x10 TO CTEST7 | |
2025 | ||
2026 | at 0x0000020a : */ 0x7a1b1000,0x00000000, | |
2027 | /* | |
2028 | ||
2029 | ||
2030 | ||
2031 | ||
2032 | ; Otherwise, mask the selected and reselected bits off SIST0 | |
2033 | ||
2034 | ; Let's assume we don't get selected for now | |
2035 | MOVE SSTAT0 & 0x10 TO SFBR | |
2036 | ||
2037 | at 0x0000020c : */ 0x740d1000,0x00000000, | |
2038 | /* | |
2039 | ||
2040 | ||
2041 | ||
2042 | ||
2043 | JUMP reselected, IF 0x10 | |
2044 | ||
2045 | at 0x0000020e : */ 0x800c0010,0x000006b0, | |
2046 | /* | |
2047 | ; If SIGP is set, the user just gave us another command, and | |
2048 | ; we should restart or return to the scheduler. | |
2049 | ; Reading CTEST2 clears the SIG_P bit in the ISTAT register. | |
2050 | MOVE CTEST2 & 0x40 TO SFBR | |
2051 | ||
2052 | at 0x00000210 : */ 0x74164000,0x00000000, | |
2053 | /* | |
2054 | JUMP select, IF 0x40 | |
2055 | ||
2056 | at 0x00000212 : */ 0x800c0040,0x000001f8, | |
2057 | /* | |
2058 | ; Check connected bit. | |
2059 | ; FIXME: this needs to change if we support target mode | |
2060 | ; FIXME: is this really necessary? | |
2061 | MOVE ISTAT & 0x08 TO SFBR | |
2062 | ||
2063 | at 0x00000214 : */ 0x74210800,0x00000000, | |
2064 | /* | |
2065 | JUMP reselected, IF 0x08 | |
2066 | ||
2067 | at 0x00000216 : */ 0x800c0008,0x000006b0, | |
2068 | /* | |
2069 | ; FIXME : Something bogus happened, and we shouldn't fail silently. | |
2070 | ||
2071 | ||
2072 | ||
2073 | INT int_debug_panic | |
2074 | ||
2075 | at 0x00000218 : */ 0x98080000,0x030b0000, | |
2076 | /* | |
2077 | ||
2078 | ||
2079 | ; | |
2080 | ; test_1 | |
2081 | ; test_2 | |
2082 | ; | |
2083 | ; PURPOSE : run some verification tests on the NCR. test_1 | |
2084 | ; copies test_src to test_dest and interrupts the host | |
2085 | ; processor, testing for cache coherency and interrupt | |
2086 | ; problems in the processes. | |
2087 | ; | |
2088 | ; test_2 runs a command with offsets relative to the | |
2089 | ; DSA on entry, and is useful for miscellaneous experimentation. | |
2090 | ; | |
2091 | ||
2092 | ; Verify that interrupts are working correctly and that we don't | |
2093 | ; have a cache invalidation problem. | |
2094 | ||
2095 | ABSOLUTE test_src = 0, test_dest = 0 | |
2096 | ENTRY test_1 | |
2097 | test_1: | |
2098 | MOVE MEMORY 4, test_src, test_dest | |
2099 | ||
2100 | at 0x0000021a : */ 0xc0000004,0x00000000,0x00000000, | |
2101 | /* | |
2102 | INT int_test_1 | |
2103 | ||
2104 | at 0x0000021d : */ 0x98080000,0x04000000, | |
2105 | /* | |
2106 | ||
2107 | ; | |
2108 | ; Run arbitrary commands, with test code establishing a DSA | |
2109 | ; | |
2110 | ||
2111 | ENTRY test_2 | |
2112 | test_2: | |
2113 | CLEAR TARGET | |
2114 | ||
2115 | at 0x0000021f : */ 0x60000200,0x00000000, | |
2116 | /* | |
2117 | ||
2118 | ; Enable selection timer | |
2119 | ||
2120 | ||
2121 | ||
2122 | MOVE CTEST7 & 0xef TO CTEST7 | |
2123 | ||
2124 | at 0x00000221 : */ 0x7c1bef00,0x00000000, | |
2125 | /* | |
2126 | ||
2127 | ||
2128 | SELECT ATN FROM 0, test_2_fail | |
2129 | ||
2130 | at 0x00000223 : */ 0x43000000,0x000008dc, | |
2131 | /* | |
2132 | JUMP test_2_msgout, WHEN MSG_OUT | |
2133 | ||
2134 | at 0x00000225 : */ 0x860b0000,0x0000089c, | |
2135 | /* | |
2136 | ENTRY test_2_msgout | |
2137 | test_2_msgout: | |
2138 | ||
2139 | ; Disable selection timer | |
2140 | MOVE CTEST7 | 0x10 TO CTEST7 | |
2141 | ||
2142 | at 0x00000227 : */ 0x7a1b1000,0x00000000, | |
2143 | /* | |
2144 | ||
2145 | MOVE FROM 8, WHEN MSG_OUT | |
2146 | ||
2147 | at 0x00000229 : */ 0x1e000000,0x00000008, | |
2148 | /* | |
2149 | MOVE FROM 16, WHEN CMD | |
2150 | ||
2151 | at 0x0000022b : */ 0x1a000000,0x00000010, | |
2152 | /* | |
2153 | MOVE FROM 24, WHEN DATA_IN | |
2154 | ||
2155 | at 0x0000022d : */ 0x19000000,0x00000018, | |
2156 | /* | |
2157 | MOVE FROM 32, WHEN STATUS | |
2158 | ||
2159 | at 0x0000022f : */ 0x1b000000,0x00000020, | |
2160 | /* | |
2161 | MOVE FROM 40, WHEN MSG_IN | |
2162 | ||
2163 | at 0x00000231 : */ 0x1f000000,0x00000028, | |
2164 | /* | |
2165 | ||
2166 | ||
2167 | ||
2168 | CLEAR ACK | |
2169 | ||
2170 | at 0x00000233 : */ 0x60000040,0x00000000, | |
2171 | /* | |
2172 | WAIT DISCONNECT | |
2173 | ||
2174 | at 0x00000235 : */ 0x48000000,0x00000000, | |
2175 | /* | |
2176 | test_2_fail: | |
2177 | ||
2178 | ; Disable selection timer | |
2179 | MOVE CTEST7 | 0x10 TO CTEST7 | |
2180 | ||
2181 | at 0x00000237 : */ 0x7a1b1000,0x00000000, | |
2182 | /* | |
2183 | ||
2184 | INT int_test_2 | |
2185 | ||
2186 | at 0x00000239 : */ 0x98080000,0x04010000, | |
2187 | /* | |
2188 | ||
2189 | ENTRY debug_break | |
2190 | debug_break: | |
2191 | INT int_debug_break | |
2192 | ||
2193 | at 0x0000023b : */ 0x98080000,0x03000000, | |
2194 | /* | |
2195 | ||
2196 | ; | |
2197 | ; initiator_abort | |
2198 | ; target_abort | |
2199 | ; | |
2200 | ; PURPOSE : Abort the currently established nexus from with initiator | |
2201 | ; or target mode. | |
2202 | ; | |
2203 | ; | |
2204 | ||
2205 | ENTRY target_abort | |
2206 | target_abort: | |
2207 | SET TARGET | |
2208 | ||
2209 | at 0x0000023d : */ 0x58000200,0x00000000, | |
2210 | /* | |
2211 | DISCONNECT | |
2212 | ||
2213 | at 0x0000023f : */ 0x48000000,0x00000000, | |
2214 | /* | |
2215 | CLEAR TARGET | |
2216 | ||
2217 | at 0x00000241 : */ 0x60000200,0x00000000, | |
2218 | /* | |
2219 | JUMP schedule | |
2220 | ||
2221 | at 0x00000243 : */ 0x80080000,0x00000000, | |
2222 | /* | |
2223 | ||
2224 | ENTRY initiator_abort | |
2225 | initiator_abort: | |
2226 | SET ATN | |
2227 | ||
2228 | at 0x00000245 : */ 0x58000008,0x00000000, | |
2229 | /* | |
2230 | ; | |
2231 | ; The SCSI-I specification says that targets may go into MSG out at | |
2232 | ; their leisure upon receipt of the ATN single. On all versions of the | |
2233 | ; specification, we can't change phases until REQ transitions true->false, | |
2234 | ; so we need to sink/source one byte of data to allow the transition. | |
2235 | ; | |
2236 | ; For the sake of safety, we'll only source one byte of data in all | |
2237 | ; cases, but to accommodate the SCSI-I dain bramage, we'll sink an | |
2238 | ; arbitrary number of bytes. | |
2239 | JUMP spew_cmd, WHEN CMD | |
2240 | ||
2241 | at 0x00000247 : */ 0x820b0000,0x0000094c, | |
2242 | /* | |
2243 | JUMP eat_msgin, WHEN MSG_IN | |
2244 | ||
2245 | at 0x00000249 : */ 0x870b0000,0x0000095c, | |
2246 | /* | |
2247 | JUMP eat_datain, WHEN DATA_IN | |
2248 | ||
2249 | at 0x0000024b : */ 0x810b0000,0x0000098c, | |
2250 | /* | |
2251 | JUMP eat_status, WHEN STATUS | |
2252 | ||
2253 | at 0x0000024d : */ 0x830b0000,0x00000974, | |
2254 | /* | |
2255 | JUMP spew_dataout, WHEN DATA_OUT | |
2256 | ||
2257 | at 0x0000024f : */ 0x800b0000,0x000009a4, | |
2258 | /* | |
2259 | JUMP sated | |
2260 | ||
2261 | at 0x00000251 : */ 0x80080000,0x000009ac, | |
2262 | /* | |
2263 | spew_cmd: | |
2264 | MOVE 1, NCR53c7xx_zero, WHEN CMD | |
2265 | ||
2266 | at 0x00000253 : */ 0x0a000001,0x00000000, | |
2267 | /* | |
2268 | JUMP sated | |
2269 | ||
2270 | at 0x00000255 : */ 0x80080000,0x000009ac, | |
2271 | /* | |
2272 | eat_msgin: | |
2273 | MOVE 1, NCR53c7xx_sink, WHEN MSG_IN | |
2274 | ||
2275 | at 0x00000257 : */ 0x0f000001,0x00000000, | |
2276 | /* | |
2277 | JUMP eat_msgin, WHEN MSG_IN | |
2278 | ||
2279 | at 0x00000259 : */ 0x870b0000,0x0000095c, | |
2280 | /* | |
2281 | JUMP sated | |
2282 | ||
2283 | at 0x0000025b : */ 0x80080000,0x000009ac, | |
2284 | /* | |
2285 | eat_status: | |
2286 | MOVE 1, NCR53c7xx_sink, WHEN STATUS | |
2287 | ||
2288 | at 0x0000025d : */ 0x0b000001,0x00000000, | |
2289 | /* | |
2290 | JUMP eat_status, WHEN STATUS | |
2291 | ||
2292 | at 0x0000025f : */ 0x830b0000,0x00000974, | |
2293 | /* | |
2294 | JUMP sated | |
2295 | ||
2296 | at 0x00000261 : */ 0x80080000,0x000009ac, | |
2297 | /* | |
2298 | eat_datain: | |
2299 | MOVE 1, NCR53c7xx_sink, WHEN DATA_IN | |
2300 | ||
2301 | at 0x00000263 : */ 0x09000001,0x00000000, | |
2302 | /* | |
2303 | JUMP eat_datain, WHEN DATA_IN | |
2304 | ||
2305 | at 0x00000265 : */ 0x810b0000,0x0000098c, | |
2306 | /* | |
2307 | JUMP sated | |
2308 | ||
2309 | at 0x00000267 : */ 0x80080000,0x000009ac, | |
2310 | /* | |
2311 | spew_dataout: | |
2312 | MOVE 1, NCR53c7xx_zero, WHEN DATA_OUT | |
2313 | ||
2314 | at 0x00000269 : */ 0x08000001,0x00000000, | |
2315 | /* | |
2316 | sated: | |
2317 | ||
2318 | ||
2319 | ||
2320 | MOVE 1, NCR53c7xx_msg_abort, WHEN MSG_OUT | |
2321 | ||
2322 | at 0x0000026b : */ 0x0e000001,0x00000000, | |
2323 | /* | |
2324 | WAIT DISCONNECT | |
2325 | ||
2326 | at 0x0000026d : */ 0x48000000,0x00000000, | |
2327 | /* | |
2328 | INT int_norm_aborted | |
2329 | ||
2330 | at 0x0000026f : */ 0x98080000,0x02040000, | |
2331 | /* | |
2332 | ||
2333 | ||
2334 | ||
2335 | ||
2336 | ; Little patched jump, used to overcome problems with TEMP getting | |
2337 | ; corrupted on memory moves. | |
2338 | ||
2339 | jump_temp: | |
2340 | JUMP 0 | |
2341 | ||
2342 | at 0x00000271 : */ 0x80080000,0x00000000, | |
2343 | }; | |
2344 | ||
2345 | #define A_NCR53c7xx_msg_abort 0x00000000 | |
2346 | static u32 A_NCR53c7xx_msg_abort_used[] __attribute((unused)) = { | |
2347 | 0x0000026c, | |
2348 | }; | |
2349 | ||
2350 | #define A_NCR53c7xx_msg_reject 0x00000000 | |
2351 | static u32 A_NCR53c7xx_msg_reject_used[] __attribute((unused)) = { | |
2352 | 0x00000186, | |
2353 | }; | |
2354 | ||
2355 | #define A_NCR53c7xx_sink 0x00000000 | |
2356 | static u32 A_NCR53c7xx_sink_used[] __attribute((unused)) = { | |
2357 | 0x00000258, | |
2358 | 0x0000025e, | |
2359 | 0x00000264, | |
2360 | }; | |
2361 | ||
2362 | #define A_NCR53c7xx_zero 0x00000000 | |
2363 | static u32 A_NCR53c7xx_zero_used[] __attribute((unused)) = { | |
2364 | 0x00000254, | |
2365 | 0x0000026a, | |
2366 | }; | |
2367 | ||
2368 | #define A_NOP_insn 0x00000000 | |
2369 | static u32 A_NOP_insn_used[] __attribute((unused)) = { | |
2370 | 0x00000017, | |
2371 | }; | |
2372 | ||
2373 | #define A_addr_dsa 0x00000000 | |
2374 | static u32 A_addr_dsa_used[] __attribute((unused)) = { | |
2375 | 0x0000000f, | |
2376 | 0x00000026, | |
2377 | 0x00000033, | |
2378 | 0x00000040, | |
2379 | 0x00000055, | |
2380 | 0x00000079, | |
2381 | 0x0000008e, | |
2382 | 0x000000bc, | |
2383 | 0x000000d2, | |
2384 | 0x00000130, | |
2385 | 0x000001a5, | |
2386 | 0x000001bb, | |
2387 | 0x000001e3, | |
2388 | }; | |
2389 | ||
2390 | #define A_addr_reconnect_dsa_head 0x00000000 | |
2391 | static u32 A_addr_reconnect_dsa_head_used[] __attribute((unused)) = { | |
2392 | 0x000001b7, | |
2393 | }; | |
2394 | ||
2395 | #define A_addr_scratch 0x00000000 | |
2396 | static u32 A_addr_scratch_used[] __attribute((unused)) = { | |
2397 | 0x00000002, | |
2398 | 0x00000004, | |
2399 | 0x00000008, | |
2400 | 0x00000020, | |
2401 | 0x00000022, | |
2402 | 0x00000049, | |
2403 | 0x00000060, | |
2404 | 0x0000006a, | |
2405 | 0x00000071, | |
2406 | 0x00000073, | |
2407 | 0x000000ab, | |
2408 | 0x000000b5, | |
2409 | 0x000000c1, | |
2410 | 0x000000cb, | |
2411 | 0x0000012c, | |
2412 | 0x00000142, | |
2413 | 0x00000157, | |
2414 | 0x000001b2, | |
2415 | 0x000001b4, | |
2416 | 0x000001df, | |
2417 | 0x000001f7, | |
2418 | }; | |
2419 | ||
2420 | #define A_addr_temp 0x00000000 | |
2421 | static u32 A_addr_temp_used[] __attribute((unused)) = { | |
2422 | }; | |
2423 | ||
2424 | #define A_dmode_memory_to_memory 0x00000000 | |
2425 | static u32 A_dmode_memory_to_memory_used[] __attribute((unused)) = { | |
2426 | }; | |
2427 | ||
2428 | #define A_dmode_memory_to_ncr 0x00000000 | |
2429 | static u32 A_dmode_memory_to_ncr_used[] __attribute((unused)) = { | |
2430 | }; | |
2431 | ||
2432 | #define A_dmode_ncr_to_memory 0x00000000 | |
2433 | static u32 A_dmode_ncr_to_memory_used[] __attribute((unused)) = { | |
2434 | }; | |
2435 | ||
2436 | #define A_dsa_check_reselect 0x00000000 | |
2437 | static u32 A_dsa_check_reselect_used[] __attribute((unused)) = { | |
2438 | 0x000001d0, | |
2439 | }; | |
2440 | ||
2441 | #define A_dsa_cmdout 0x00000048 | |
2442 | static u32 A_dsa_cmdout_used[] __attribute((unused)) = { | |
2443 | 0x0000009a, | |
2444 | }; | |
2445 | ||
2446 | #define A_dsa_cmnd 0x00000038 | |
2447 | static u32 A_dsa_cmnd_used[] __attribute((unused)) = { | |
2448 | }; | |
2449 | ||
2450 | #define A_dsa_datain 0x00000054 | |
2451 | static u32 A_dsa_datain_used[] __attribute((unused)) = { | |
2452 | 0x000000c2, | |
2453 | }; | |
2454 | ||
2455 | #define A_dsa_dataout 0x00000050 | |
2456 | static u32 A_dsa_dataout_used[] __attribute((unused)) = { | |
2457 | 0x000000ac, | |
2458 | }; | |
2459 | ||
2460 | #define A_dsa_end 0x00000070 | |
2461 | static u32 A_dsa_end_used[] __attribute((unused)) = { | |
2462 | }; | |
2463 | ||
2464 | #define A_dsa_fields_start 0x00000000 | |
2465 | static u32 A_dsa_fields_start_used[] __attribute((unused)) = { | |
2466 | }; | |
2467 | ||
2468 | #define A_dsa_msgin 0x00000058 | |
2469 | static u32 A_dsa_msgin_used[] __attribute((unused)) = { | |
2470 | 0x0000019c, | |
2471 | }; | |
2472 | ||
2473 | #define A_dsa_msgout 0x00000040 | |
2474 | static u32 A_dsa_msgout_used[] __attribute((unused)) = { | |
2475 | 0x00000089, | |
2476 | }; | |
2477 | ||
2478 | #define A_dsa_msgout_other 0x00000068 | |
2479 | static u32 A_dsa_msgout_other_used[] __attribute((unused)) = { | |
2480 | 0x00000194, | |
2481 | }; | |
2482 | ||
2483 | #define A_dsa_next 0x00000030 | |
2484 | static u32 A_dsa_next_used[] __attribute((unused)) = { | |
2485 | 0x00000061, | |
2486 | }; | |
2487 | ||
2488 | #define A_dsa_restore_pointers 0x00000000 | |
2489 | static u32 A_dsa_restore_pointers_used[] __attribute((unused)) = { | |
2490 | 0x00000146, | |
2491 | }; | |
2492 | ||
2493 | #define A_dsa_save_data_pointer 0x00000000 | |
2494 | static u32 A_dsa_save_data_pointer_used[] __attribute((unused)) = { | |
2495 | 0x00000131, | |
2496 | }; | |
2497 | ||
2498 | #define A_dsa_select 0x0000003c | |
2499 | static u32 A_dsa_select_used[] __attribute((unused)) = { | |
2500 | 0x00000082, | |
2501 | }; | |
2502 | ||
2503 | #define A_dsa_sscf_710 0x00000000 | |
2504 | static u32 A_dsa_sscf_710_used[] __attribute((unused)) = { | |
2505 | 0x00000007, | |
2506 | }; | |
2507 | ||
2508 | #define A_dsa_status 0x00000060 | |
2509 | static u32 A_dsa_status_used[] __attribute((unused)) = { | |
2510 | 0x00000198, | |
2511 | }; | |
2512 | ||
2513 | #define A_dsa_temp_addr_array_value 0x00000000 | |
2514 | static u32 A_dsa_temp_addr_array_value_used[] __attribute((unused)) = { | |
2515 | }; | |
2516 | ||
2517 | #define A_dsa_temp_addr_dsa_value 0x00000000 | |
2518 | static u32 A_dsa_temp_addr_dsa_value_used[] __attribute((unused)) = { | |
2519 | 0x00000001, | |
2520 | }; | |
2521 | ||
2522 | #define A_dsa_temp_addr_new_value 0x00000000 | |
2523 | static u32 A_dsa_temp_addr_new_value_used[] __attribute((unused)) = { | |
2524 | }; | |
2525 | ||
2526 | #define A_dsa_temp_addr_next 0x00000000 | |
2527 | static u32 A_dsa_temp_addr_next_used[] __attribute((unused)) = { | |
2528 | 0x0000001c, | |
2529 | 0x0000004f, | |
2530 | }; | |
2531 | ||
2532 | #define A_dsa_temp_addr_residual 0x00000000 | |
2533 | static u32 A_dsa_temp_addr_residual_used[] __attribute((unused)) = { | |
2534 | 0x0000002d, | |
2535 | 0x0000003b, | |
2536 | }; | |
2537 | ||
2538 | #define A_dsa_temp_addr_saved_pointer 0x00000000 | |
2539 | static u32 A_dsa_temp_addr_saved_pointer_used[] __attribute((unused)) = { | |
2540 | 0x0000002b, | |
2541 | 0x00000037, | |
2542 | }; | |
2543 | ||
2544 | #define A_dsa_temp_addr_saved_residual 0x00000000 | |
2545 | static u32 A_dsa_temp_addr_saved_residual_used[] __attribute((unused)) = { | |
2546 | 0x0000002e, | |
2547 | 0x0000003a, | |
2548 | }; | |
2549 | ||
2550 | #define A_dsa_temp_lun 0x00000000 | |
2551 | static u32 A_dsa_temp_lun_used[] __attribute((unused)) = { | |
2552 | 0x0000004c, | |
2553 | }; | |
2554 | ||
2555 | #define A_dsa_temp_next 0x00000000 | |
2556 | static u32 A_dsa_temp_next_used[] __attribute((unused)) = { | |
2557 | 0x0000001f, | |
2558 | }; | |
2559 | ||
2560 | #define A_dsa_temp_sync 0x00000000 | |
2561 | static u32 A_dsa_temp_sync_used[] __attribute((unused)) = { | |
2562 | 0x00000057, | |
2563 | }; | |
2564 | ||
2565 | #define A_dsa_temp_target 0x00000000 | |
2566 | static u32 A_dsa_temp_target_used[] __attribute((unused)) = { | |
2567 | 0x00000045, | |
2568 | }; | |
2569 | ||
2570 | #define A_emulfly 0x00000000 | |
2571 | static u32 A_emulfly_used[] __attribute((unused)) = { | |
2572 | }; | |
2573 | ||
2574 | #define A_int_debug_break 0x03000000 | |
2575 | static u32 A_int_debug_break_used[] __attribute((unused)) = { | |
2576 | 0x0000023c, | |
2577 | }; | |
2578 | ||
2579 | #define A_int_debug_panic 0x030b0000 | |
2580 | static u32 A_int_debug_panic_used[] __attribute((unused)) = { | |
2581 | 0x00000209, | |
2582 | 0x00000219, | |
2583 | }; | |
2584 | ||
2585 | #define A_int_err_check_condition 0x00030000 | |
2586 | static u32 A_int_err_check_condition_used[] __attribute((unused)) = { | |
2587 | 0x000001a9, | |
2588 | }; | |
2589 | ||
2590 | #define A_int_err_no_phase 0x00040000 | |
2591 | static u32 A_int_err_no_phase_used[] __attribute((unused)) = { | |
2592 | }; | |
2593 | ||
2594 | #define A_int_err_selected 0x00010000 | |
2595 | static u32 A_int_err_selected_used[] __attribute((unused)) = { | |
2596 | 0x000001ff, | |
2597 | }; | |
2598 | ||
2599 | #define A_int_err_unexpected_phase 0x00000000 | |
2600 | static u32 A_int_err_unexpected_phase_used[] __attribute((unused)) = { | |
2601 | 0x00000092, | |
2602 | 0x00000098, | |
2603 | 0x000000a0, | |
2604 | 0x000000d6, | |
2605 | 0x000000da, | |
2606 | 0x000000dc, | |
2607 | 0x000000e4, | |
2608 | 0x000000e8, | |
2609 | 0x000000ea, | |
2610 | 0x000000f2, | |
2611 | 0x000000f6, | |
2612 | 0x000000f8, | |
2613 | 0x000000fa, | |
2614 | 0x00000160, | |
2615 | }; | |
2616 | ||
2617 | #define A_int_err_unexpected_reselect 0x00020000 | |
2618 | static u32 A_int_err_unexpected_reselect_used[] __attribute((unused)) = { | |
2619 | 0x000001cd, | |
2620 | }; | |
2621 | ||
2622 | #define A_int_msg_1 0x01020000 | |
2623 | static u32 A_int_msg_1_used[] __attribute((unused)) = { | |
2624 | 0x00000114, | |
2625 | 0x00000116, | |
2626 | }; | |
2627 | ||
2628 | #define A_int_msg_sdtr 0x01010000 | |
2629 | static u32 A_int_msg_sdtr_used[] __attribute((unused)) = { | |
2630 | 0x00000180, | |
2631 | }; | |
2632 | ||
2633 | #define A_int_msg_wdtr 0x01000000 | |
2634 | static u32 A_int_msg_wdtr_used[] __attribute((unused)) = { | |
2635 | 0x00000174, | |
2636 | }; | |
2637 | ||
2638 | #define A_int_norm_aborted 0x02040000 | |
2639 | static u32 A_int_norm_aborted_used[] __attribute((unused)) = { | |
2640 | 0x00000270, | |
2641 | }; | |
2642 | ||
2643 | #define A_int_norm_command_complete 0x02020000 | |
2644 | static u32 A_int_norm_command_complete_used[] __attribute((unused)) = { | |
2645 | }; | |
2646 | ||
2647 | #define A_int_norm_disconnected 0x02030000 | |
2648 | static u32 A_int_norm_disconnected_used[] __attribute((unused)) = { | |
2649 | }; | |
2650 | ||
2651 | #define A_int_norm_emulateintfly 0x02060000 | |
2652 | static u32 A_int_norm_emulateintfly_used[] __attribute((unused)) = { | |
2653 | 0x000001a2, | |
2654 | }; | |
2655 | ||
2656 | #define A_int_norm_reselect_complete 0x02010000 | |
2657 | static u32 A_int_norm_reselect_complete_used[] __attribute((unused)) = { | |
2658 | }; | |
2659 | ||
2660 | #define A_int_norm_reset 0x02050000 | |
2661 | static u32 A_int_norm_reset_used[] __attribute((unused)) = { | |
2662 | }; | |
2663 | ||
2664 | #define A_int_norm_select_complete 0x02000000 | |
2665 | static u32 A_int_norm_select_complete_used[] __attribute((unused)) = { | |
2666 | }; | |
2667 | ||
2668 | #define A_int_test_1 0x04000000 | |
2669 | static u32 A_int_test_1_used[] __attribute((unused)) = { | |
2670 | 0x0000021e, | |
2671 | }; | |
2672 | ||
2673 | #define A_int_test_2 0x04010000 | |
2674 | static u32 A_int_test_2_used[] __attribute((unused)) = { | |
2675 | 0x0000023a, | |
2676 | }; | |
2677 | ||
2678 | #define A_int_test_3 0x04020000 | |
2679 | static u32 A_int_test_3_used[] __attribute((unused)) = { | |
2680 | }; | |
2681 | ||
2682 | #define A_msg_buf 0x00000000 | |
2683 | static u32 A_msg_buf_used[] __attribute((unused)) = { | |
2684 | 0x00000108, | |
2685 | 0x00000162, | |
2686 | 0x0000016c, | |
2687 | 0x00000172, | |
2688 | 0x00000178, | |
2689 | 0x0000017e, | |
2690 | }; | |
2691 | ||
2692 | #define A_reconnect_dsa_head 0x00000000 | |
2693 | static u32 A_reconnect_dsa_head_used[] __attribute((unused)) = { | |
2694 | 0x0000006d, | |
2695 | 0x00000074, | |
2696 | 0x000001b1, | |
2697 | }; | |
2698 | ||
2699 | #define A_reselected_identify 0x00000000 | |
2700 | static u32 A_reselected_identify_used[] __attribute((unused)) = { | |
2701 | 0x00000048, | |
2702 | 0x000001af, | |
2703 | }; | |
2704 | ||
2705 | #define A_reselected_tag 0x00000000 | |
2706 | static u32 A_reselected_tag_used[] __attribute((unused)) = { | |
2707 | }; | |
2708 | ||
2709 | #define A_saved_dsa 0x00000000 | |
2710 | static u32 A_saved_dsa_used[] __attribute((unused)) = { | |
2711 | 0x00000005, | |
2712 | 0x0000000e, | |
2713 | 0x00000023, | |
2714 | 0x00000025, | |
2715 | 0x00000032, | |
2716 | 0x0000003f, | |
2717 | 0x00000054, | |
2718 | 0x0000005f, | |
2719 | 0x00000070, | |
2720 | 0x00000078, | |
2721 | 0x0000008d, | |
2722 | 0x000000aa, | |
2723 | 0x000000bb, | |
2724 | 0x000000c0, | |
2725 | 0x000000d1, | |
2726 | 0x0000012f, | |
2727 | 0x000001a4, | |
2728 | 0x000001b5, | |
2729 | 0x000001ba, | |
2730 | 0x000001e2, | |
2731 | }; | |
2732 | ||
2733 | #define A_schedule 0x00000000 | |
2734 | static u32 A_schedule_used[] __attribute((unused)) = { | |
2735 | 0x0000007d, | |
2736 | 0x000001a7, | |
2737 | 0x00000203, | |
2738 | 0x00000244, | |
2739 | }; | |
2740 | ||
2741 | #define A_test_dest 0x00000000 | |
2742 | static u32 A_test_dest_used[] __attribute((unused)) = { | |
2743 | 0x0000021c, | |
2744 | }; | |
2745 | ||
2746 | #define A_test_src 0x00000000 | |
2747 | static u32 A_test_src_used[] __attribute((unused)) = { | |
2748 | 0x0000021b, | |
2749 | }; | |
2750 | ||
2751 | #define Ent_accept_message 0x00000624 | |
2752 | #define Ent_cmdout_cmdout 0x00000264 | |
2753 | #define Ent_command_complete 0x0000065c | |
2754 | #define Ent_command_complete_msgin 0x0000066c | |
2755 | #define Ent_data_transfer 0x0000026c | |
2756 | #define Ent_datain_to_jump 0x00000334 | |
2757 | #define Ent_debug_break 0x000008ec | |
2758 | #define Ent_dsa_code_begin 0x00000000 | |
2759 | #define Ent_dsa_code_check_reselect 0x0000010c | |
2760 | #define Ent_dsa_code_fix_jump 0x00000058 | |
2761 | #define Ent_dsa_code_restore_pointers 0x000000d8 | |
2762 | #define Ent_dsa_code_save_data_pointer 0x000000a4 | |
2763 | #define Ent_dsa_code_template 0x00000000 | |
2764 | #define Ent_dsa_code_template_end 0x00000178 | |
2765 | #define Ent_dsa_schedule 0x00000178 | |
2766 | #define Ent_dsa_zero 0x00000178 | |
2767 | #define Ent_end_data_transfer 0x000002a4 | |
2768 | #define Ent_initiator_abort 0x00000914 | |
2769 | #define Ent_msg_in 0x0000041c | |
2770 | #define Ent_msg_in_restart 0x000003fc | |
2771 | #define Ent_other_in 0x0000038c | |
2772 | #define Ent_other_out 0x00000354 | |
2773 | #define Ent_other_transfer 0x000003c4 | |
2774 | #define Ent_reject_message 0x00000604 | |
2775 | #define Ent_reselected_check_next 0x000006f0 | |
2776 | #define Ent_reselected_ok 0x00000798 | |
2777 | #define Ent_respond_message 0x0000063c | |
2778 | #define Ent_select 0x000001f8 | |
2779 | #define Ent_select_msgout 0x00000218 | |
2780 | #define Ent_target_abort 0x000008f4 | |
2781 | #define Ent_test_1 0x00000868 | |
2782 | #define Ent_test_2 0x0000087c | |
2783 | #define Ent_test_2_msgout 0x0000089c | |
2784 | #define Ent_wait_reselect 0x000006a8 | |
2785 | static u32 LABELPATCHES[] __attribute((unused)) = { | |
2786 | 0x00000011, | |
2787 | 0x0000001a, | |
2788 | 0x0000001d, | |
2789 | 0x00000028, | |
2790 | 0x0000002a, | |
2791 | 0x00000035, | |
2792 | 0x00000038, | |
2793 | 0x00000042, | |
2794 | 0x00000050, | |
2795 | 0x00000052, | |
2796 | 0x0000006b, | |
2797 | 0x00000083, | |
2798 | 0x00000085, | |
2799 | 0x00000090, | |
2800 | 0x00000094, | |
2801 | 0x00000096, | |
2802 | 0x0000009c, | |
2803 | 0x0000009e, | |
2804 | 0x000000a2, | |
2805 | 0x000000a4, | |
2806 | 0x000000a6, | |
2807 | 0x000000a8, | |
2808 | 0x000000b6, | |
2809 | 0x000000b9, | |
2810 | 0x000000cc, | |
2811 | 0x000000cf, | |
2812 | 0x000000d8, | |
2813 | 0x000000de, | |
2814 | 0x000000e0, | |
2815 | 0x000000e6, | |
2816 | 0x000000ec, | |
2817 | 0x000000ee, | |
2818 | 0x000000f4, | |
2819 | 0x000000fc, | |
2820 | 0x000000fe, | |
2821 | 0x0000010a, | |
2822 | 0x0000010c, | |
2823 | 0x0000010e, | |
2824 | 0x00000110, | |
2825 | 0x00000112, | |
2826 | 0x00000118, | |
2827 | 0x0000011a, | |
2828 | 0x0000012d, | |
2829 | 0x00000143, | |
2830 | 0x00000158, | |
2831 | 0x0000015c, | |
2832 | 0x00000164, | |
2833 | 0x00000166, | |
2834 | 0x00000168, | |
2835 | 0x0000016e, | |
2836 | 0x0000017a, | |
2837 | 0x000001ab, | |
2838 | 0x000001b8, | |
2839 | 0x000001bf, | |
2840 | 0x000001c3, | |
2841 | 0x000001c7, | |
2842 | 0x000001cb, | |
2843 | 0x000001e0, | |
2844 | 0x000001f8, | |
2845 | 0x00000207, | |
2846 | 0x0000020f, | |
2847 | 0x00000213, | |
2848 | 0x00000217, | |
2849 | 0x00000224, | |
2850 | 0x00000226, | |
2851 | 0x00000248, | |
2852 | 0x0000024a, | |
2853 | 0x0000024c, | |
2854 | 0x0000024e, | |
2855 | 0x00000250, | |
2856 | 0x00000252, | |
2857 | 0x00000256, | |
2858 | 0x0000025a, | |
2859 | 0x0000025c, | |
2860 | 0x00000260, | |
2861 | 0x00000262, | |
2862 | 0x00000266, | |
2863 | 0x00000268, | |
2864 | }; | |
2865 | ||
2866 | static struct { | |
2867 | u32 offset; | |
2868 | void *address; | |
2869 | } EXTERNAL_PATCHES[] __attribute((unused)) = { | |
2870 | }; | |
2871 | ||
2872 | static u32 INSTRUCTIONS __attribute((unused)) = 290; | |
2873 | static u32 PATCHES __attribute((unused)) = 78; | |
2874 | static u32 EXTERNAL_PATCHES_LEN __attribute((unused)) = 0; |