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1da177e4 LT |
1 | /* |
2 | * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family | |
3 | * of PCI-SCSI IO processors. | |
4 | * | |
5 | * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr> | |
6 | * | |
7 | * This driver is derived from the Linux sym53c8xx driver. | |
8 | * Copyright (C) 1998-2000 Gerard Roudier | |
9 | * | |
10 | * The sym53c8xx driver is derived from the ncr53c8xx driver that had been | |
11 | * a port of the FreeBSD ncr driver to Linux-1.2.13. | |
12 | * | |
13 | * The original ncr driver has been written for 386bsd and FreeBSD by | |
14 | * Wolfgang Stanglmeier <wolf@cologne.de> | |
15 | * Stefan Esser <se@mi.Uni-Koeln.de> | |
16 | * Copyright (C) 1994 Wolfgang Stanglmeier | |
17 | * | |
18 | * Other major contributions: | |
19 | * | |
20 | * NVRAM detection and reading. | |
21 | * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk> | |
22 | * | |
23 | *----------------------------------------------------------------------------- | |
24 | * | |
25 | * This program is free software; you can redistribute it and/or modify | |
26 | * it under the terms of the GNU General Public License as published by | |
27 | * the Free Software Foundation; either version 2 of the License, or | |
28 | * (at your option) any later version. | |
29 | * | |
30 | * This program is distributed in the hope that it will be useful, | |
31 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
32 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
33 | * GNU General Public License for more details. | |
34 | * | |
35 | * You should have received a copy of the GNU General Public License | |
36 | * along with this program; if not, write to the Free Software | |
37 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
38 | */ | |
39 | ||
40 | /* | |
41 | * Scripts for SYMBIOS-Processor | |
42 | * | |
43 | * We have to know the offsets of all labels before we reach | |
44 | * them (for forward jumps). Therefore we declare a struct | |
45 | * here. If you make changes inside the script, | |
46 | * | |
47 | * DONT FORGET TO CHANGE THE LENGTHS HERE! | |
48 | */ | |
49 | ||
50 | /* | |
51 | * Script fragments which are loaded into the on-chip RAM | |
52 | * of 825A, 875, 876, 895, 895A, 896 and 1010 chips. | |
53 | * Must not exceed 4K bytes. | |
54 | */ | |
55 | struct SYM_FWA_SCR { | |
56 | u32 start [ 11]; | |
57 | u32 getjob_begin [ 4]; | |
58 | u32 _sms_a10 [ 5]; | |
59 | u32 getjob_end [ 4]; | |
60 | u32 _sms_a20 [ 4]; | |
61 | #ifdef SYM_CONF_TARGET_ROLE_SUPPORT | |
62 | u32 select [ 8]; | |
63 | #else | |
64 | u32 select [ 6]; | |
65 | #endif | |
66 | u32 _sms_a30 [ 5]; | |
67 | u32 wf_sel_done [ 2]; | |
68 | u32 send_ident [ 2]; | |
69 | #ifdef SYM_CONF_IARB_SUPPORT | |
70 | u32 select2 [ 8]; | |
71 | #else | |
72 | u32 select2 [ 2]; | |
73 | #endif | |
74 | u32 command [ 2]; | |
75 | u32 dispatch [ 28]; | |
76 | u32 sel_no_cmd [ 10]; | |
77 | u32 init [ 6]; | |
78 | u32 clrack [ 4]; | |
79 | u32 datai_done [ 11]; | |
80 | u32 datai_done_wsr [ 20]; | |
81 | u32 datao_done [ 11]; | |
82 | u32 datao_done_wss [ 6]; | |
83 | u32 datai_phase [ 5]; | |
84 | u32 datao_phase [ 5]; | |
85 | u32 msg_in [ 2]; | |
86 | u32 msg_in2 [ 10]; | |
87 | #ifdef SYM_CONF_IARB_SUPPORT | |
88 | u32 status [ 14]; | |
89 | #else | |
90 | u32 status [ 10]; | |
91 | #endif | |
92 | u32 complete [ 6]; | |
93 | u32 complete2 [ 8]; | |
94 | u32 _sms_a40 [ 12]; | |
95 | u32 done [ 5]; | |
96 | u32 _sms_a50 [ 5]; | |
97 | u32 _sms_a60 [ 2]; | |
98 | u32 done_end [ 4]; | |
99 | u32 complete_error [ 5]; | |
100 | u32 save_dp [ 11]; | |
101 | u32 restore_dp [ 7]; | |
102 | u32 disconnect [ 11]; | |
103 | u32 disconnect2 [ 5]; | |
104 | u32 _sms_a65 [ 3]; | |
105 | #ifdef SYM_CONF_IARB_SUPPORT | |
106 | u32 idle [ 4]; | |
107 | #else | |
108 | u32 idle [ 2]; | |
109 | #endif | |
110 | #ifdef SYM_CONF_IARB_SUPPORT | |
111 | u32 ungetjob [ 7]; | |
112 | #else | |
113 | u32 ungetjob [ 5]; | |
114 | #endif | |
115 | #ifdef SYM_CONF_TARGET_ROLE_SUPPORT | |
116 | u32 reselect [ 4]; | |
117 | #else | |
118 | u32 reselect [ 2]; | |
119 | #endif | |
120 | u32 reselected [ 19]; | |
121 | u32 _sms_a70 [ 6]; | |
122 | u32 _sms_a80 [ 4]; | |
123 | u32 reselected1 [ 25]; | |
124 | u32 _sms_a90 [ 4]; | |
125 | u32 resel_lun0 [ 7]; | |
126 | u32 _sms_a100 [ 4]; | |
127 | u32 resel_tag [ 8]; | |
128 | #if SYM_CONF_MAX_TASK*4 > 512 | |
129 | u32 _sms_a110 [ 23]; | |
130 | #elif SYM_CONF_MAX_TASK*4 > 256 | |
131 | u32 _sms_a110 [ 17]; | |
132 | #else | |
133 | u32 _sms_a110 [ 13]; | |
134 | #endif | |
135 | u32 _sms_a120 [ 2]; | |
136 | u32 resel_go [ 4]; | |
137 | u32 _sms_a130 [ 7]; | |
138 | u32 resel_dsa [ 2]; | |
139 | u32 resel_dsa1 [ 4]; | |
140 | u32 _sms_a140 [ 7]; | |
141 | u32 resel_no_tag [ 4]; | |
142 | u32 _sms_a145 [ 7]; | |
143 | u32 data_in [SYM_CONF_MAX_SG * 2]; | |
144 | u32 data_in2 [ 4]; | |
145 | u32 data_out [SYM_CONF_MAX_SG * 2]; | |
146 | u32 data_out2 [ 4]; | |
147 | u32 pm0_data [ 12]; | |
148 | u32 pm0_data_out [ 6]; | |
149 | u32 pm0_data_end [ 7]; | |
150 | u32 pm_data_end [ 4]; | |
151 | u32 _sms_a150 [ 4]; | |
152 | u32 pm1_data [ 12]; | |
153 | u32 pm1_data_out [ 6]; | |
154 | u32 pm1_data_end [ 9]; | |
155 | }; | |
156 | ||
157 | /* | |
158 | * Script fragments which stay in main memory for all chips | |
159 | * except for chips that support 8K on-chip RAM. | |
160 | */ | |
161 | struct SYM_FWB_SCR { | |
162 | u32 no_data [ 2]; | |
163 | #ifdef SYM_CONF_TARGET_ROLE_SUPPORT | |
164 | u32 sel_for_abort [ 18]; | |
165 | #else | |
166 | u32 sel_for_abort [ 16]; | |
167 | #endif | |
168 | u32 sel_for_abort_1 [ 2]; | |
169 | u32 msg_in_etc [ 12]; | |
170 | u32 msg_received [ 5]; | |
171 | u32 msg_weird_seen [ 5]; | |
172 | u32 msg_extended [ 17]; | |
173 | u32 _sms_b10 [ 4]; | |
174 | u32 msg_bad [ 6]; | |
175 | u32 msg_weird [ 4]; | |
176 | u32 msg_weird1 [ 8]; | |
177 | u32 wdtr_resp [ 6]; | |
178 | u32 send_wdtr [ 4]; | |
179 | u32 sdtr_resp [ 6]; | |
180 | u32 send_sdtr [ 4]; | |
181 | u32 ppr_resp [ 6]; | |
182 | u32 send_ppr [ 4]; | |
183 | u32 nego_bad_phase [ 4]; | |
184 | u32 msg_out [ 4]; | |
185 | u32 msg_out_done [ 4]; | |
186 | u32 data_ovrun [ 3]; | |
187 | u32 data_ovrun1 [ 22]; | |
188 | u32 data_ovrun2 [ 8]; | |
189 | u32 abort_resel [ 16]; | |
190 | u32 resend_ident [ 4]; | |
191 | u32 ident_break [ 4]; | |
192 | u32 ident_break_atn [ 4]; | |
193 | u32 sdata_in [ 6]; | |
194 | u32 resel_bad_lun [ 4]; | |
195 | u32 bad_i_t_l [ 4]; | |
196 | u32 bad_i_t_l_q [ 4]; | |
197 | u32 bad_status [ 7]; | |
198 | u32 wsr_ma_helper [ 4]; | |
199 | ||
1da177e4 LT |
200 | /* Data area */ |
201 | u32 zero [ 1]; | |
202 | u32 scratch [ 1]; | |
203 | u32 scratch1 [ 1]; | |
204 | u32 prev_done [ 1]; | |
205 | u32 done_pos [ 1]; | |
206 | u32 nextjob [ 1]; | |
207 | u32 startpos [ 1]; | |
208 | u32 targtbl [ 1]; | |
209 | }; | |
210 | ||
211 | /* | |
212 | * Script fragments used at initialisations. | |
213 | * Only runs out of main memory. | |
214 | */ | |
215 | struct SYM_FWZ_SCR { | |
216 | u32 snooptest [ 9]; | |
217 | u32 snoopend [ 2]; | |
218 | }; | |
219 | ||
220 | static struct SYM_FWA_SCR SYM_FWA_SCR = { | |
221 | /*--------------------------< START >----------------------------*/ { | |
222 | /* | |
223 | * Switch the LED on. | |
224 | * Will be patched with a NO_OP if LED | |
225 | * not needed or not desired. | |
226 | */ | |
227 | SCR_REG_REG (gpreg, SCR_AND, 0xfe), | |
228 | 0, | |
229 | /* | |
230 | * Clear SIGP. | |
231 | */ | |
232 | SCR_FROM_REG (ctest2), | |
233 | 0, | |
234 | /* | |
235 | * Stop here if the C code wants to perform | |
236 | * some error recovery procedure manually. | |
237 | * (Indicate this by setting SEM in ISTAT) | |
238 | */ | |
239 | SCR_FROM_REG (istat), | |
240 | 0, | |
241 | /* | |
242 | * Report to the C code the next position in | |
243 | * the start queue the SCRIPTS will schedule. | |
244 | * The C code must not change SCRATCHA. | |
245 | */ | |
246 | SCR_COPY (4), | |
247 | PADDR_B (startpos), | |
248 | RADDR_1 (scratcha), | |
249 | SCR_INT ^ IFTRUE (MASK (SEM, SEM)), | |
250 | SIR_SCRIPT_STOPPED, | |
251 | /* | |
252 | * Start the next job. | |
253 | * | |
254 | * @DSA = start point for this job. | |
255 | * SCRATCHA = address of this job in the start queue. | |
256 | * | |
257 | * We will restore startpos with SCRATCHA if we fails the | |
258 | * arbitration or if it is the idle job. | |
259 | * | |
260 | * The below GETJOB_BEGIN to GETJOB_END section of SCRIPTS | |
261 | * is a critical path. If it is partially executed, it then | |
262 | * may happen that the job address is not yet in the DSA | |
263 | * and the next queue position points to the next JOB. | |
264 | */ | |
265 | }/*-------------------------< GETJOB_BEGIN >---------------------*/,{ | |
266 | /* | |
267 | * Copy to a fixed location both the next STARTPOS | |
268 | * and the current JOB address, using self modifying | |
269 | * SCRIPTS. | |
270 | */ | |
271 | SCR_COPY (4), | |
272 | RADDR_1 (scratcha), | |
273 | PADDR_A (_sms_a10), | |
274 | SCR_COPY (8), | |
275 | }/*-------------------------< _SMS_A10 >-------------------------*/,{ | |
276 | 0, | |
277 | PADDR_B (nextjob), | |
278 | /* | |
279 | * Move the start address to TEMP using self- | |
280 | * modifying SCRIPTS and jump indirectly to | |
281 | * that address. | |
282 | */ | |
283 | SCR_COPY (4), | |
284 | PADDR_B (nextjob), | |
285 | RADDR_1 (dsa), | |
286 | }/*-------------------------< GETJOB_END >-----------------------*/,{ | |
287 | SCR_COPY (4), | |
288 | RADDR_1 (dsa), | |
289 | PADDR_A (_sms_a20), | |
290 | SCR_COPY (4), | |
291 | }/*-------------------------< _SMS_A20 >-------------------------*/,{ | |
292 | 0, | |
293 | RADDR_1 (temp), | |
294 | SCR_RETURN, | |
295 | 0, | |
296 | }/*-------------------------< SELECT >---------------------------*/,{ | |
297 | /* | |
298 | * DSA contains the address of a scheduled | |
299 | * data structure. | |
300 | * | |
301 | * SCRATCHA contains the address of the start queue | |
302 | * entry which points to the next job. | |
303 | * | |
304 | * Set Initiator mode. | |
305 | * | |
306 | * (Target mode is left as an exercise for the reader) | |
307 | */ | |
308 | #ifdef SYM_CONF_TARGET_ROLE_SUPPORT | |
309 | SCR_CLR (SCR_TRG), | |
310 | 0, | |
311 | #endif | |
312 | /* | |
313 | * And try to select this target. | |
314 | */ | |
315 | SCR_SEL_TBL_ATN ^ offsetof (struct sym_dsb, select), | |
316 | PADDR_A (ungetjob), | |
317 | /* | |
318 | * Now there are 4 possibilities: | |
319 | * | |
320 | * (1) The chip loses arbitration. | |
321 | * This is ok, because it will try again, | |
322 | * when the bus becomes idle. | |
323 | * (But beware of the timeout function!) | |
324 | * | |
325 | * (2) The chip is reselected. | |
326 | * Then the script processor takes the jump | |
327 | * to the RESELECT label. | |
328 | * | |
329 | * (3) The chip wins arbitration. | |
330 | * Then it will execute SCRIPTS instruction until | |
331 | * the next instruction that checks SCSI phase. | |
332 | * Then will stop and wait for selection to be | |
333 | * complete or selection time-out to occur. | |
334 | * | |
335 | * After having won arbitration, the SCRIPTS | |
336 | * processor is able to execute instructions while | |
337 | * the SCSI core is performing SCSI selection. | |
338 | */ | |
339 | ||
340 | /* | |
341 | * Copy the CCB header to a fixed location | |
342 | * in the HCB using self-modifying SCRIPTS. | |
343 | */ | |
344 | SCR_COPY (4), | |
345 | RADDR_1 (dsa), | |
346 | PADDR_A (_sms_a30), | |
347 | SCR_COPY (sizeof(struct sym_ccbh)), | |
348 | }/*-------------------------< _SMS_A30 >-------------------------*/,{ | |
349 | 0, | |
350 | HADDR_1 (ccb_head), | |
351 | /* | |
352 | * Initialize the status register | |
353 | */ | |
354 | SCR_COPY (4), | |
355 | HADDR_1 (ccb_head.status), | |
356 | RADDR_1 (scr0), | |
357 | }/*-------------------------< WF_SEL_DONE >----------------------*/,{ | |
358 | SCR_INT ^ IFFALSE (WHEN (SCR_MSG_OUT)), | |
359 | SIR_SEL_ATN_NO_MSG_OUT, | |
360 | }/*-------------------------< SEND_IDENT >-----------------------*/,{ | |
361 | /* | |
362 | * Selection complete. | |
363 | * Send the IDENTIFY and possibly the TAG message | |
364 | * and negotiation message if present. | |
365 | */ | |
366 | SCR_MOVE_TBL ^ SCR_MSG_OUT, | |
367 | offsetof (struct sym_dsb, smsg), | |
368 | }/*-------------------------< SELECT2 >--------------------------*/,{ | |
369 | #ifdef SYM_CONF_IARB_SUPPORT | |
370 | /* | |
371 | * Set IMMEDIATE ARBITRATION if we have been given | |
372 | * a hint to do so. (Some job to do after this one). | |
373 | */ | |
374 | SCR_FROM_REG (HF_REG), | |
375 | 0, | |
376 | SCR_JUMPR ^ IFFALSE (MASK (HF_HINT_IARB, HF_HINT_IARB)), | |
377 | 8, | |
378 | SCR_REG_REG (scntl1, SCR_OR, IARB), | |
379 | 0, | |
380 | #endif | |
381 | /* | |
382 | * Anticipate the COMMAND phase. | |
383 | * This is the PHASE we expect at this point. | |
384 | */ | |
385 | SCR_JUMP ^ IFFALSE (WHEN (SCR_COMMAND)), | |
386 | PADDR_A (sel_no_cmd), | |
387 | }/*-------------------------< COMMAND >--------------------------*/,{ | |
388 | /* | |
389 | * ... and send the command | |
390 | */ | |
391 | SCR_MOVE_TBL ^ SCR_COMMAND, | |
392 | offsetof (struct sym_dsb, cmd), | |
393 | }/*-------------------------< DISPATCH >-------------------------*/,{ | |
394 | /* | |
395 | * MSG_IN is the only phase that shall be | |
396 | * entered at least once for each (re)selection. | |
397 | * So we test it first. | |
398 | */ | |
399 | SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)), | |
400 | PADDR_A (msg_in), | |
401 | SCR_JUMP ^ IFTRUE (IF (SCR_DATA_OUT)), | |
402 | PADDR_A (datao_phase), | |
403 | SCR_JUMP ^ IFTRUE (IF (SCR_DATA_IN)), | |
404 | PADDR_A (datai_phase), | |
405 | SCR_JUMP ^ IFTRUE (IF (SCR_STATUS)), | |
406 | PADDR_A (status), | |
407 | SCR_JUMP ^ IFTRUE (IF (SCR_COMMAND)), | |
408 | PADDR_A (command), | |
409 | SCR_JUMP ^ IFTRUE (IF (SCR_MSG_OUT)), | |
410 | PADDR_B (msg_out), | |
411 | /* | |
412 | * Discard as many illegal phases as | |
413 | * required and tell the C code about. | |
414 | */ | |
415 | SCR_JUMPR ^ IFFALSE (WHEN (SCR_ILG_OUT)), | |
416 | 16, | |
417 | SCR_MOVE_ABS (1) ^ SCR_ILG_OUT, | |
418 | HADDR_1 (scratch), | |
419 | SCR_JUMPR ^ IFTRUE (WHEN (SCR_ILG_OUT)), | |
420 | -16, | |
421 | SCR_JUMPR ^ IFFALSE (WHEN (SCR_ILG_IN)), | |
422 | 16, | |
423 | SCR_MOVE_ABS (1) ^ SCR_ILG_IN, | |
424 | HADDR_1 (scratch), | |
425 | SCR_JUMPR ^ IFTRUE (WHEN (SCR_ILG_IN)), | |
426 | -16, | |
427 | SCR_INT, | |
428 | SIR_BAD_PHASE, | |
429 | SCR_JUMP, | |
430 | PADDR_A (dispatch), | |
431 | }/*-------------------------< SEL_NO_CMD >-----------------------*/,{ | |
432 | /* | |
433 | * The target does not switch to command | |
434 | * phase after IDENTIFY has been sent. | |
435 | * | |
436 | * If it stays in MSG OUT phase send it | |
437 | * the IDENTIFY again. | |
438 | */ | |
439 | SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_OUT)), | |
440 | PADDR_B (resend_ident), | |
441 | /* | |
442 | * If target does not switch to MSG IN phase | |
443 | * and we sent a negotiation, assert the | |
444 | * failure immediately. | |
445 | */ | |
446 | SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)), | |
447 | PADDR_A (dispatch), | |
448 | SCR_FROM_REG (HS_REG), | |
449 | 0, | |
450 | SCR_INT ^ IFTRUE (DATA (HS_NEGOTIATE)), | |
451 | SIR_NEGO_FAILED, | |
452 | /* | |
453 | * Jump to dispatcher. | |
454 | */ | |
455 | SCR_JUMP, | |
456 | PADDR_A (dispatch), | |
457 | }/*-------------------------< INIT >-----------------------------*/,{ | |
458 | /* | |
459 | * Wait for the SCSI RESET signal to be | |
460 | * inactive before restarting operations, | |
461 | * since the chip may hang on SEL_ATN | |
462 | * if SCSI RESET is active. | |
463 | */ | |
464 | SCR_FROM_REG (sstat0), | |
465 | 0, | |
466 | SCR_JUMPR ^ IFTRUE (MASK (IRST, IRST)), | |
467 | -16, | |
468 | SCR_JUMP, | |
469 | PADDR_A (start), | |
470 | }/*-------------------------< CLRACK >---------------------------*/,{ | |
471 | /* | |
472 | * Terminate possible pending message phase. | |
473 | */ | |
474 | SCR_CLR (SCR_ACK), | |
475 | 0, | |
476 | SCR_JUMP, | |
477 | PADDR_A (dispatch), | |
478 | }/*-------------------------< DATAI_DONE >-----------------------*/,{ | |
479 | /* | |
480 | * Save current pointer to LASTP. | |
481 | */ | |
482 | SCR_COPY (4), | |
483 | RADDR_1 (temp), | |
484 | HADDR_1 (ccb_head.lastp), | |
485 | /* | |
486 | * If the SWIDE is not full, jump to dispatcher. | |
487 | * We anticipate a STATUS phase. | |
488 | */ | |
489 | SCR_FROM_REG (scntl2), | |
490 | 0, | |
491 | SCR_JUMP ^ IFTRUE (MASK (WSR, WSR)), | |
492 | PADDR_A (datai_done_wsr), | |
493 | SCR_JUMP ^ IFTRUE (WHEN (SCR_STATUS)), | |
494 | PADDR_A (status), | |
495 | SCR_JUMP, | |
496 | PADDR_A (dispatch), | |
497 | }/*-------------------------< DATAI_DONE_WSR >-------------------*/,{ | |
498 | /* | |
499 | * The SWIDE is full. | |
500 | * Clear this condition. | |
501 | */ | |
502 | SCR_REG_REG (scntl2, SCR_OR, WSR), | |
503 | 0, | |
504 | /* | |
505 | * We are expecting an IGNORE RESIDUE message | |
506 | * from the device, otherwise we are in data | |
507 | * overrun condition. Check against MSG_IN phase. | |
508 | */ | |
509 | SCR_INT ^ IFFALSE (WHEN (SCR_MSG_IN)), | |
510 | SIR_SWIDE_OVERRUN, | |
511 | SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)), | |
512 | PADDR_A (dispatch), | |
513 | /* | |
514 | * We are in MSG_IN phase, | |
515 | * Read the first byte of the message. | |
516 | * If it is not an IGNORE RESIDUE message, | |
517 | * signal overrun and jump to message | |
518 | * processing. | |
519 | */ | |
520 | SCR_MOVE_ABS (1) ^ SCR_MSG_IN, | |
521 | HADDR_1 (msgin[0]), | |
522 | SCR_INT ^ IFFALSE (DATA (M_IGN_RESIDUE)), | |
523 | SIR_SWIDE_OVERRUN, | |
524 | SCR_JUMP ^ IFFALSE (DATA (M_IGN_RESIDUE)), | |
525 | PADDR_A (msg_in2), | |
526 | /* | |
527 | * We got the message we expected. | |
528 | * Read the 2nd byte, and jump to dispatcher. | |
529 | */ | |
530 | SCR_CLR (SCR_ACK), | |
531 | 0, | |
532 | SCR_MOVE_ABS (1) ^ SCR_MSG_IN, | |
533 | HADDR_1 (msgin[1]), | |
534 | SCR_CLR (SCR_ACK), | |
535 | 0, | |
536 | SCR_JUMP, | |
537 | PADDR_A (dispatch), | |
538 | }/*-------------------------< DATAO_DONE >-----------------------*/,{ | |
539 | /* | |
540 | * Save current pointer to LASTP. | |
541 | */ | |
542 | SCR_COPY (4), | |
543 | RADDR_1 (temp), | |
544 | HADDR_1 (ccb_head.lastp), | |
545 | /* | |
546 | * If the SODL is not full jump to dispatcher. | |
547 | * We anticipate a STATUS phase. | |
548 | */ | |
549 | SCR_FROM_REG (scntl2), | |
550 | 0, | |
551 | SCR_JUMP ^ IFTRUE (MASK (WSS, WSS)), | |
552 | PADDR_A (datao_done_wss), | |
553 | SCR_JUMP ^ IFTRUE (WHEN (SCR_STATUS)), | |
554 | PADDR_A (status), | |
555 | SCR_JUMP, | |
556 | PADDR_A (dispatch), | |
557 | }/*-------------------------< DATAO_DONE_WSS >-------------------*/,{ | |
558 | /* | |
559 | * The SODL is full, clear this condition. | |
560 | */ | |
561 | SCR_REG_REG (scntl2, SCR_OR, WSS), | |
562 | 0, | |
563 | /* | |
564 | * And signal a DATA UNDERRUN condition | |
565 | * to the C code. | |
566 | */ | |
567 | SCR_INT, | |
568 | SIR_SODL_UNDERRUN, | |
569 | SCR_JUMP, | |
570 | PADDR_A (dispatch), | |
571 | }/*-------------------------< DATAI_PHASE >----------------------*/,{ | |
572 | /* | |
573 | * Jump to current pointer. | |
574 | */ | |
575 | SCR_COPY (4), | |
576 | HADDR_1 (ccb_head.lastp), | |
577 | RADDR_1 (temp), | |
578 | SCR_RETURN, | |
579 | 0, | |
580 | }/*-------------------------< DATAO_PHASE >----------------------*/,{ | |
581 | /* | |
582 | * Jump to current pointer. | |
583 | */ | |
584 | SCR_COPY (4), | |
585 | HADDR_1 (ccb_head.lastp), | |
586 | RADDR_1 (temp), | |
587 | SCR_RETURN, | |
588 | 0, | |
589 | }/*-------------------------< MSG_IN >---------------------------*/,{ | |
590 | /* | |
591 | * Get the first byte of the message. | |
592 | * | |
593 | * The script processor doesn't negate the | |
594 | * ACK signal after this transfer. | |
595 | */ | |
596 | SCR_MOVE_ABS (1) ^ SCR_MSG_IN, | |
597 | HADDR_1 (msgin[0]), | |
598 | }/*-------------------------< MSG_IN2 >--------------------------*/,{ | |
599 | /* | |
600 | * Check first against 1 byte messages | |
601 | * that we handle from SCRIPTS. | |
602 | */ | |
603 | SCR_JUMP ^ IFTRUE (DATA (M_COMPLETE)), | |
604 | PADDR_A (complete), | |
605 | SCR_JUMP ^ IFTRUE (DATA (M_DISCONNECT)), | |
606 | PADDR_A (disconnect), | |
607 | SCR_JUMP ^ IFTRUE (DATA (M_SAVE_DP)), | |
608 | PADDR_A (save_dp), | |
609 | SCR_JUMP ^ IFTRUE (DATA (M_RESTORE_DP)), | |
610 | PADDR_A (restore_dp), | |
611 | /* | |
612 | * We handle all other messages from the | |
613 | * C code, so no need to waste on-chip RAM | |
614 | * for those ones. | |
615 | */ | |
616 | SCR_JUMP, | |
617 | PADDR_B (msg_in_etc), | |
618 | }/*-------------------------< STATUS >---------------------------*/,{ | |
619 | /* | |
620 | * get the status | |
621 | */ | |
622 | SCR_MOVE_ABS (1) ^ SCR_STATUS, | |
623 | HADDR_1 (scratch), | |
624 | #ifdef SYM_CONF_IARB_SUPPORT | |
625 | /* | |
626 | * If STATUS is not GOOD, clear IMMEDIATE ARBITRATION, | |
627 | * since we may have to tamper the start queue from | |
628 | * the C code. | |
629 | */ | |
630 | SCR_JUMPR ^ IFTRUE (DATA (S_GOOD)), | |
631 | 8, | |
632 | SCR_REG_REG (scntl1, SCR_AND, ~IARB), | |
633 | 0, | |
634 | #endif | |
635 | /* | |
636 | * save status to scsi_status. | |
637 | * mark as complete. | |
638 | */ | |
639 | SCR_TO_REG (SS_REG), | |
640 | 0, | |
641 | SCR_LOAD_REG (HS_REG, HS_COMPLETE), | |
642 | 0, | |
643 | /* | |
644 | * Anticipate the MESSAGE PHASE for | |
645 | * the TASK COMPLETE message. | |
646 | */ | |
647 | SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)), | |
648 | PADDR_A (msg_in), | |
649 | SCR_JUMP, | |
650 | PADDR_A (dispatch), | |
651 | }/*-------------------------< COMPLETE >-------------------------*/,{ | |
652 | /* | |
653 | * Complete message. | |
654 | * | |
655 | * When we terminate the cycle by clearing ACK, | |
656 | * the target may disconnect immediately. | |
657 | * | |
658 | * We don't want to be told of an "unexpected disconnect", | |
659 | * so we disable this feature. | |
660 | */ | |
661 | SCR_REG_REG (scntl2, SCR_AND, 0x7f), | |
662 | 0, | |
663 | /* | |
664 | * Terminate cycle ... | |
665 | */ | |
666 | SCR_CLR (SCR_ACK|SCR_ATN), | |
667 | 0, | |
668 | /* | |
669 | * ... and wait for the disconnect. | |
670 | */ | |
671 | SCR_WAIT_DISC, | |
672 | 0, | |
673 | }/*-------------------------< COMPLETE2 >------------------------*/,{ | |
674 | /* | |
675 | * Save host status. | |
676 | */ | |
677 | SCR_COPY (4), | |
678 | RADDR_1 (scr0), | |
679 | HADDR_1 (ccb_head.status), | |
680 | /* | |
681 | * Move back the CCB header using self-modifying | |
682 | * SCRIPTS. | |
683 | */ | |
684 | SCR_COPY (4), | |
685 | RADDR_1 (dsa), | |
686 | PADDR_A (_sms_a40), | |
687 | SCR_COPY (sizeof(struct sym_ccbh)), | |
688 | HADDR_1 (ccb_head), | |
689 | }/*-------------------------< _SMS_A40 >-------------------------*/,{ | |
690 | 0, | |
691 | /* | |
692 | * Some bridges may reorder DMA writes to memory. | |
693 | * We donnot want the CPU to deal with completions | |
694 | * without all the posted write having been flushed | |
695 | * to memory. This DUMMY READ should flush posted | |
696 | * buffers prior to the CPU having to deal with | |
697 | * completions. | |
698 | */ | |
699 | SCR_COPY (4), /* DUMMY READ */ | |
700 | HADDR_1 (ccb_head.status), | |
701 | RADDR_1 (scr0), | |
702 | /* | |
703 | * If command resulted in not GOOD status, | |
704 | * call the C code if needed. | |
705 | */ | |
706 | SCR_FROM_REG (SS_REG), | |
707 | 0, | |
708 | SCR_CALL ^ IFFALSE (DATA (S_GOOD)), | |
709 | PADDR_B (bad_status), | |
710 | /* | |
711 | * If we performed an auto-sense, call | |
712 | * the C code to synchronyze task aborts | |
713 | * with UNIT ATTENTION conditions. | |
714 | */ | |
715 | SCR_FROM_REG (HF_REG), | |
716 | 0, | |
717 | SCR_JUMP ^ IFFALSE (MASK (0 ,(HF_SENSE|HF_EXT_ERR))), | |
718 | PADDR_A (complete_error), | |
719 | }/*-------------------------< DONE >-----------------------------*/,{ | |
720 | /* | |
721 | * Copy the DSA to the DONE QUEUE and | |
722 | * signal completion to the host. | |
723 | * If we are interrupted between DONE | |
724 | * and DONE_END, we must reset, otherwise | |
725 | * the completed CCB may be lost. | |
726 | */ | |
727 | SCR_COPY (4), | |
728 | PADDR_B (done_pos), | |
729 | PADDR_A (_sms_a50), | |
730 | SCR_COPY (4), | |
731 | RADDR_1 (dsa), | |
732 | }/*-------------------------< _SMS_A50 >-------------------------*/,{ | |
733 | 0, | |
734 | SCR_COPY (4), | |
735 | PADDR_B (done_pos), | |
736 | PADDR_A (_sms_a60), | |
737 | /* | |
738 | * The instruction below reads the DONE QUEUE next | |
739 | * free position from memory. | |
740 | * In addition it ensures that all PCI posted writes | |
741 | * are flushed and so the DSA value of the done | |
742 | * CCB is visible by the CPU before INTFLY is raised. | |
743 | */ | |
744 | SCR_COPY (8), | |
745 | }/*-------------------------< _SMS_A60 >-------------------------*/,{ | |
746 | 0, | |
747 | PADDR_B (prev_done), | |
748 | }/*-------------------------< DONE_END >-------------------------*/,{ | |
749 | SCR_INT_FLY, | |
750 | 0, | |
751 | SCR_JUMP, | |
752 | PADDR_A (start), | |
753 | }/*-------------------------< COMPLETE_ERROR >-------------------*/,{ | |
754 | SCR_COPY (4), | |
755 | PADDR_B (startpos), | |
756 | RADDR_1 (scratcha), | |
757 | SCR_INT, | |
758 | SIR_COMPLETE_ERROR, | |
759 | }/*-------------------------< SAVE_DP >--------------------------*/,{ | |
760 | /* | |
761 | * Clear ACK immediately. | |
762 | * No need to delay it. | |
763 | */ | |
764 | SCR_CLR (SCR_ACK), | |
765 | 0, | |
766 | /* | |
767 | * Keep track we received a SAVE DP, so | |
768 | * we will switch to the other PM context | |
769 | * on the next PM since the DP may point | |
770 | * to the current PM context. | |
771 | */ | |
772 | SCR_REG_REG (HF_REG, SCR_OR, HF_DP_SAVED), | |
773 | 0, | |
774 | /* | |
775 | * SAVE_DP message: | |
776 | * Copy LASTP to SAVEP. | |
777 | */ | |
778 | SCR_COPY (4), | |
779 | HADDR_1 (ccb_head.lastp), | |
780 | HADDR_1 (ccb_head.savep), | |
781 | /* | |
782 | * Anticipate the MESSAGE PHASE for | |
783 | * the DISCONNECT message. | |
784 | */ | |
785 | SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)), | |
786 | PADDR_A (msg_in), | |
787 | SCR_JUMP, | |
788 | PADDR_A (dispatch), | |
789 | }/*-------------------------< RESTORE_DP >-----------------------*/,{ | |
790 | /* | |
791 | * Clear ACK immediately. | |
792 | * No need to delay it. | |
793 | */ | |
794 | SCR_CLR (SCR_ACK), | |
795 | 0, | |
796 | /* | |
797 | * Copy SAVEP to LASTP. | |
798 | */ | |
799 | SCR_COPY (4), | |
800 | HADDR_1 (ccb_head.savep), | |
801 | HADDR_1 (ccb_head.lastp), | |
802 | SCR_JUMP, | |
803 | PADDR_A (dispatch), | |
804 | }/*-------------------------< DISCONNECT >-----------------------*/,{ | |
805 | /* | |
806 | * DISCONNECTing ... | |
807 | * | |
808 | * disable the "unexpected disconnect" feature, | |
809 | * and remove the ACK signal. | |
810 | */ | |
811 | SCR_REG_REG (scntl2, SCR_AND, 0x7f), | |
812 | 0, | |
813 | SCR_CLR (SCR_ACK|SCR_ATN), | |
814 | 0, | |
815 | /* | |
816 | * Wait for the disconnect. | |
817 | */ | |
818 | SCR_WAIT_DISC, | |
819 | 0, | |
820 | /* | |
821 | * Status is: DISCONNECTED. | |
822 | */ | |
823 | SCR_LOAD_REG (HS_REG, HS_DISCONNECT), | |
824 | 0, | |
825 | /* | |
826 | * Save host status. | |
827 | */ | |
828 | SCR_COPY (4), | |
829 | RADDR_1 (scr0), | |
830 | HADDR_1 (ccb_head.status), | |
831 | }/*-------------------------< DISCONNECT2 >----------------------*/,{ | |
832 | /* | |
833 | * Move back the CCB header using self-modifying | |
834 | * SCRIPTS. | |
835 | */ | |
836 | SCR_COPY (4), | |
837 | RADDR_1 (dsa), | |
838 | PADDR_A (_sms_a65), | |
839 | SCR_COPY (sizeof(struct sym_ccbh)), | |
840 | HADDR_1 (ccb_head), | |
841 | }/*-------------------------< _SMS_A65 >-------------------------*/,{ | |
842 | 0, | |
843 | SCR_JUMP, | |
844 | PADDR_A (start), | |
845 | }/*-------------------------< IDLE >-----------------------------*/,{ | |
846 | /* | |
847 | * Nothing to do? | |
848 | * Switch the LED off and wait for reselect. | |
849 | * Will be patched with a NO_OP if LED | |
850 | * not needed or not desired. | |
851 | */ | |
852 | SCR_REG_REG (gpreg, SCR_OR, 0x01), | |
853 | 0, | |
854 | #ifdef SYM_CONF_IARB_SUPPORT | |
855 | SCR_JUMPR, | |
856 | 8, | |
857 | #endif | |
858 | }/*-------------------------< UNGETJOB >-------------------------*/,{ | |
859 | #ifdef SYM_CONF_IARB_SUPPORT | |
860 | /* | |
861 | * Set IMMEDIATE ARBITRATION, for the next time. | |
862 | * This will give us better chance to win arbitration | |
863 | * for the job we just wanted to do. | |
864 | */ | |
865 | SCR_REG_REG (scntl1, SCR_OR, IARB), | |
866 | 0, | |
867 | #endif | |
868 | /* | |
869 | * We are not able to restart the SCRIPTS if we are | |
870 | * interrupted and these instruction haven't been | |
871 | * all executed. BTW, this is very unlikely to | |
872 | * happen, but we check that from the C code. | |
873 | */ | |
874 | SCR_LOAD_REG (dsa, 0xff), | |
875 | 0, | |
876 | SCR_COPY (4), | |
877 | RADDR_1 (scratcha), | |
878 | PADDR_B (startpos), | |
879 | }/*-------------------------< RESELECT >-------------------------*/,{ | |
880 | #ifdef SYM_CONF_TARGET_ROLE_SUPPORT | |
881 | /* | |
882 | * Make sure we are in initiator mode. | |
883 | */ | |
884 | SCR_CLR (SCR_TRG), | |
885 | 0, | |
886 | #endif | |
887 | /* | |
888 | * Sleep waiting for a reselection. | |
889 | */ | |
890 | SCR_WAIT_RESEL, | |
891 | PADDR_A(start), | |
892 | }/*-------------------------< RESELECTED >-----------------------*/,{ | |
893 | /* | |
894 | * Switch the LED on. | |
895 | * Will be patched with a NO_OP if LED | |
896 | * not needed or not desired. | |
897 | */ | |
898 | SCR_REG_REG (gpreg, SCR_AND, 0xfe), | |
899 | 0, | |
900 | /* | |
901 | * load the target id into the sdid | |
902 | */ | |
903 | SCR_REG_SFBR (ssid, SCR_AND, 0x8F), | |
904 | 0, | |
905 | SCR_TO_REG (sdid), | |
906 | 0, | |
907 | /* | |
908 | * Load the target control block address | |
909 | */ | |
910 | SCR_COPY (4), | |
911 | PADDR_B (targtbl), | |
912 | RADDR_1 (dsa), | |
913 | SCR_SFBR_REG (dsa, SCR_SHL, 0), | |
914 | 0, | |
915 | SCR_REG_REG (dsa, SCR_SHL, 0), | |
916 | 0, | |
917 | SCR_REG_REG (dsa, SCR_AND, 0x3c), | |
918 | 0, | |
919 | SCR_COPY (4), | |
920 | RADDR_1 (dsa), | |
921 | PADDR_A (_sms_a70), | |
922 | SCR_COPY (4), | |
923 | }/*-------------------------< _SMS_A70 >-------------------------*/,{ | |
924 | 0, | |
925 | RADDR_1 (dsa), | |
926 | /* | |
927 | * Copy the TCB header to a fixed place in | |
928 | * the HCB. | |
929 | */ | |
930 | SCR_COPY (4), | |
931 | RADDR_1 (dsa), | |
932 | PADDR_A (_sms_a80), | |
933 | SCR_COPY (sizeof(struct sym_tcbh)), | |
934 | }/*-------------------------< _SMS_A80 >-------------------------*/,{ | |
935 | 0, | |
936 | HADDR_1 (tcb_head), | |
937 | /* | |
938 | * We expect MESSAGE IN phase. | |
939 | * If not, get help from the C code. | |
940 | */ | |
941 | SCR_INT ^ IFFALSE (WHEN (SCR_MSG_IN)), | |
942 | SIR_RESEL_NO_MSG_IN, | |
943 | }/*-------------------------< RESELECTED1 >----------------------*/,{ | |
944 | /* | |
945 | * Load the synchronous transfer registers. | |
946 | */ | |
947 | SCR_COPY (1), | |
948 | HADDR_1 (tcb_head.wval), | |
949 | RADDR_1 (scntl3), | |
950 | SCR_COPY (1), | |
951 | HADDR_1 (tcb_head.sval), | |
952 | RADDR_1 (sxfer), | |
953 | /* | |
954 | * Get the IDENTIFY message. | |
955 | */ | |
956 | SCR_MOVE_ABS (1) ^ SCR_MSG_IN, | |
957 | HADDR_1 (msgin), | |
958 | /* | |
959 | * If IDENTIFY LUN #0, use a faster path | |
960 | * to find the LCB structure. | |
961 | */ | |
962 | SCR_JUMP ^ IFTRUE (MASK (0x80, 0xbf)), | |
963 | PADDR_A (resel_lun0), | |
964 | /* | |
965 | * If message isn't an IDENTIFY, | |
966 | * tell the C code about. | |
967 | */ | |
968 | SCR_INT ^ IFFALSE (MASK (0x80, 0x80)), | |
969 | SIR_RESEL_NO_IDENTIFY, | |
970 | /* | |
971 | * It is an IDENTIFY message, | |
972 | * Load the LUN control block address. | |
973 | */ | |
974 | SCR_COPY (4), | |
975 | HADDR_1 (tcb_head.luntbl_sa), | |
976 | RADDR_1 (dsa), | |
977 | SCR_SFBR_REG (dsa, SCR_SHL, 0), | |
978 | 0, | |
979 | SCR_REG_REG (dsa, SCR_SHL, 0), | |
980 | 0, | |
981 | SCR_REG_REG (dsa, SCR_AND, 0xfc), | |
982 | 0, | |
983 | SCR_COPY (4), | |
984 | RADDR_1 (dsa), | |
985 | PADDR_A (_sms_a90), | |
986 | SCR_COPY (4), | |
987 | }/*-------------------------< _SMS_A90 >-------------------------*/,{ | |
988 | 0, | |
989 | RADDR_1 (dsa), | |
990 | SCR_JUMPR, | |
991 | 12, | |
992 | }/*-------------------------< RESEL_LUN0 >-----------------------*/,{ | |
993 | /* | |
994 | * LUN 0 special case (but usual one :)) | |
995 | */ | |
996 | SCR_COPY (4), | |
997 | HADDR_1 (tcb_head.lun0_sa), | |
998 | RADDR_1 (dsa), | |
999 | /* | |
1000 | * Jump indirectly to the reselect action for this LUN. | |
1001 | * (lcb.head.resel_sa assumed at offset zero of lcb). | |
1002 | */ | |
1003 | SCR_COPY (4), | |
1004 | RADDR_1 (dsa), | |
1005 | PADDR_A (_sms_a100), | |
1006 | SCR_COPY (4), | |
1007 | }/*-------------------------< _SMS_A100 >------------------------*/,{ | |
1008 | 0, | |
1009 | RADDR_1 (temp), | |
1010 | SCR_RETURN, | |
1011 | 0, | |
1012 | /* In normal situations, we jump to RESEL_TAG or RESEL_NO_TAG */ | |
1013 | }/*-------------------------< RESEL_TAG >------------------------*/,{ | |
1014 | /* | |
1015 | * ACK the IDENTIFY previously received. | |
1016 | */ | |
1017 | SCR_CLR (SCR_ACK), | |
1018 | 0, | |
1019 | /* | |
1020 | * It shall be a tagged command. | |
1021 | * Read SIMPLE+TAG. | |
1022 | * The C code will deal with errors. | |
bbf2f9fb | 1023 | * Aggressive optimization, isn't it? :) |
1da177e4 LT |
1024 | */ |
1025 | SCR_MOVE_ABS (2) ^ SCR_MSG_IN, | |
1026 | HADDR_1 (msgin), | |
1027 | /* | |
1028 | * Copy the LCB header to a fixed place in | |
1029 | * the HCB using self-modifying SCRIPTS. | |
1030 | */ | |
1031 | SCR_COPY (4), | |
1032 | RADDR_1 (dsa), | |
1033 | PADDR_A (_sms_a110), | |
1034 | SCR_COPY (sizeof(struct sym_lcbh)), | |
1035 | }/*-------------------------< _SMS_A110 >------------------------*/,{ | |
1036 | 0, | |
1037 | HADDR_1 (lcb_head), | |
1038 | /* | |
1039 | * Load the pointer to the tagged task | |
1040 | * table for this LUN. | |
1041 | */ | |
1042 | SCR_COPY (4), | |
1043 | HADDR_1 (lcb_head.itlq_tbl_sa), | |
1044 | RADDR_1 (dsa), | |
1045 | /* | |
1046 | * The SIDL still contains the TAG value. | |
bbf2f9fb | 1047 | * Aggressive optimization, isn't it? :):) |
1da177e4 LT |
1048 | */ |
1049 | SCR_REG_SFBR (sidl, SCR_SHL, 0), | |
1050 | 0, | |
1051 | #if SYM_CONF_MAX_TASK*4 > 512 | |
1052 | SCR_JUMPR ^ IFFALSE (CARRYSET), | |
1053 | 8, | |
1054 | SCR_REG_REG (dsa1, SCR_OR, 2), | |
1055 | 0, | |
1056 | SCR_REG_REG (sfbr, SCR_SHL, 0), | |
1057 | 0, | |
1058 | SCR_JUMPR ^ IFFALSE (CARRYSET), | |
1059 | 8, | |
1060 | SCR_REG_REG (dsa1, SCR_OR, 1), | |
1061 | 0, | |
1062 | #elif SYM_CONF_MAX_TASK*4 > 256 | |
1063 | SCR_JUMPR ^ IFFALSE (CARRYSET), | |
1064 | 8, | |
1065 | SCR_REG_REG (dsa1, SCR_OR, 1), | |
1066 | 0, | |
1067 | #endif | |
1068 | /* | |
1069 | * Retrieve the DSA of this task. | |
1070 | * JUMP indirectly to the restart point of the CCB. | |
1071 | */ | |
1072 | SCR_SFBR_REG (dsa, SCR_AND, 0xfc), | |
1073 | 0, | |
1074 | SCR_COPY (4), | |
1075 | RADDR_1 (dsa), | |
1076 | PADDR_A (_sms_a120), | |
1077 | SCR_COPY (4), | |
1078 | }/*-------------------------< _SMS_A120 >------------------------*/,{ | |
1079 | 0, | |
1080 | RADDR_1 (dsa), | |
1081 | }/*-------------------------< RESEL_GO >-------------------------*/,{ | |
1082 | SCR_COPY (4), | |
1083 | RADDR_1 (dsa), | |
1084 | PADDR_A (_sms_a130), | |
1085 | /* | |
1086 | * Move 'ccb.phys.head.go' action to | |
1087 | * scratch/scratch1. So scratch1 will | |
1088 | * contain the 'restart' field of the | |
1089 | * 'go' structure. | |
1090 | */ | |
1091 | SCR_COPY (8), | |
1092 | }/*-------------------------< _SMS_A130 >------------------------*/,{ | |
1093 | 0, | |
1094 | PADDR_B (scratch), | |
1095 | SCR_COPY (4), | |
1096 | PADDR_B (scratch1), /* phys.head.go.restart */ | |
1097 | RADDR_1 (temp), | |
1098 | SCR_RETURN, | |
1099 | 0, | |
1100 | /* In normal situations we branch to RESEL_DSA */ | |
1101 | }/*-------------------------< RESEL_DSA >------------------------*/,{ | |
1102 | /* | |
1103 | * ACK the IDENTIFY or TAG previously received. | |
1104 | */ | |
1105 | SCR_CLR (SCR_ACK), | |
1106 | 0, | |
1107 | }/*-------------------------< RESEL_DSA1 >-----------------------*/,{ | |
1108 | /* | |
1109 | * Copy the CCB header to a fixed location | |
1110 | * in the HCB using self-modifying SCRIPTS. | |
1111 | */ | |
1112 | SCR_COPY (4), | |
1113 | RADDR_1 (dsa), | |
1114 | PADDR_A (_sms_a140), | |
1115 | SCR_COPY (sizeof(struct sym_ccbh)), | |
1116 | }/*-------------------------< _SMS_A140 >------------------------*/,{ | |
1117 | 0, | |
1118 | HADDR_1 (ccb_head), | |
1119 | /* | |
1120 | * Initialize the status register | |
1121 | */ | |
1122 | SCR_COPY (4), | |
1123 | HADDR_1 (ccb_head.status), | |
1124 | RADDR_1 (scr0), | |
1125 | /* | |
1126 | * Jump to dispatcher. | |
1127 | */ | |
1128 | SCR_JUMP, | |
1129 | PADDR_A (dispatch), | |
1130 | }/*-------------------------< RESEL_NO_TAG >---------------------*/,{ | |
1131 | /* | |
1132 | * Copy the LCB header to a fixed place in | |
1133 | * the HCB using self-modifying SCRIPTS. | |
1134 | */ | |
1135 | SCR_COPY (4), | |
1136 | RADDR_1 (dsa), | |
1137 | PADDR_A (_sms_a145), | |
1138 | SCR_COPY (sizeof(struct sym_lcbh)), | |
1139 | }/*-------------------------< _SMS_A145 >------------------------*/,{ | |
1140 | 0, | |
1141 | HADDR_1 (lcb_head), | |
1142 | /* | |
1143 | * Load the DSA with the unique ITL task. | |
1144 | */ | |
1145 | SCR_COPY (4), | |
1146 | HADDR_1 (lcb_head.itl_task_sa), | |
1147 | RADDR_1 (dsa), | |
1148 | SCR_JUMP, | |
1149 | PADDR_A (resel_go), | |
1150 | }/*-------------------------< DATA_IN >--------------------------*/,{ | |
1151 | /* | |
1152 | * Because the size depends on the | |
1153 | * #define SYM_CONF_MAX_SG parameter, | |
1154 | * it is filled in at runtime. | |
1155 | * | |
1156 | * ##===========< i=0; i<SYM_CONF_MAX_SG >========= | |
1157 | * || SCR_CHMOV_TBL ^ SCR_DATA_IN, | |
1158 | * || offsetof (struct sym_dsb, data[ i]), | |
1159 | * ##========================================== | |
1160 | */ | |
1161 | 0 | |
1162 | }/*-------------------------< DATA_IN2 >-------------------------*/,{ | |
1163 | SCR_CALL, | |
1164 | PADDR_A (datai_done), | |
1165 | SCR_JUMP, | |
1166 | PADDR_B (data_ovrun), | |
1167 | }/*-------------------------< DATA_OUT >-------------------------*/,{ | |
1168 | /* | |
1169 | * Because the size depends on the | |
1170 | * #define SYM_CONF_MAX_SG parameter, | |
1171 | * it is filled in at runtime. | |
1172 | * | |
1173 | * ##===========< i=0; i<SYM_CONF_MAX_SG >========= | |
1174 | * || SCR_CHMOV_TBL ^ SCR_DATA_OUT, | |
1175 | * || offsetof (struct sym_dsb, data[ i]), | |
1176 | * ##========================================== | |
1177 | */ | |
1178 | 0 | |
1179 | }/*-------------------------< DATA_OUT2 >------------------------*/,{ | |
1180 | SCR_CALL, | |
1181 | PADDR_A (datao_done), | |
1182 | SCR_JUMP, | |
1183 | PADDR_B (data_ovrun), | |
1184 | }/*-------------------------< PM0_DATA >-------------------------*/,{ | |
1185 | /* | |
1186 | * Read our host flags to SFBR, so we will be able | |
1187 | * to check against the data direction we expect. | |
1188 | */ | |
1189 | SCR_FROM_REG (HF_REG), | |
1190 | 0, | |
1191 | /* | |
1192 | * Check against actual DATA PHASE. | |
1193 | */ | |
1194 | SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN)), | |
1195 | PADDR_A (pm0_data_out), | |
1196 | /* | |
1197 | * Actual phase is DATA IN. | |
1198 | * Check against expected direction. | |
1199 | */ | |
1200 | SCR_JUMP ^ IFFALSE (MASK (HF_DATA_IN, HF_DATA_IN)), | |
1201 | PADDR_B (data_ovrun), | |
1202 | /* | |
1203 | * Keep track we are moving data from the | |
1204 | * PM0 DATA mini-script. | |
1205 | */ | |
1206 | SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM0), | |
1207 | 0, | |
1208 | /* | |
1209 | * Move the data to memory. | |
1210 | */ | |
1211 | SCR_CHMOV_TBL ^ SCR_DATA_IN, | |
1212 | offsetof (struct sym_ccb, phys.pm0.sg), | |
1213 | SCR_JUMP, | |
1214 | PADDR_A (pm0_data_end), | |
1215 | }/*-------------------------< PM0_DATA_OUT >---------------------*/,{ | |
1216 | /* | |
1217 | * Actual phase is DATA OUT. | |
1218 | * Check against expected direction. | |
1219 | */ | |
1220 | SCR_JUMP ^ IFTRUE (MASK (HF_DATA_IN, HF_DATA_IN)), | |
1221 | PADDR_B (data_ovrun), | |
1222 | /* | |
1223 | * Keep track we are moving data from the | |
1224 | * PM0 DATA mini-script. | |
1225 | */ | |
1226 | SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM0), | |
1227 | 0, | |
1228 | /* | |
1229 | * Move the data from memory. | |
1230 | */ | |
1231 | SCR_CHMOV_TBL ^ SCR_DATA_OUT, | |
1232 | offsetof (struct sym_ccb, phys.pm0.sg), | |
1233 | }/*-------------------------< PM0_DATA_END >---------------------*/,{ | |
1234 | /* | |
1235 | * Clear the flag that told we were moving | |
1236 | * data from the PM0 DATA mini-script. | |
1237 | */ | |
1238 | SCR_REG_REG (HF_REG, SCR_AND, (~HF_IN_PM0)), | |
1239 | 0, | |
1240 | /* | |
1241 | * Return to the previous DATA script which | |
1242 | * is guaranteed by design (if no bug) to be | |
1243 | * the main DATA script for this transfer. | |
1244 | */ | |
1245 | SCR_COPY (4), | |
1246 | RADDR_1 (dsa), | |
1247 | RADDR_1 (scratcha), | |
1248 | SCR_REG_REG (scratcha, SCR_ADD, offsetof (struct sym_ccb,phys.pm0.ret)), | |
1249 | 0, | |
1250 | }/*-------------------------< PM_DATA_END >----------------------*/,{ | |
1251 | SCR_COPY (4), | |
1252 | RADDR_1 (scratcha), | |
1253 | PADDR_A (_sms_a150), | |
1254 | SCR_COPY (4), | |
1255 | }/*-------------------------< _SMS_A150 >------------------------*/,{ | |
1256 | 0, | |
1257 | RADDR_1 (temp), | |
1258 | SCR_RETURN, | |
1259 | 0, | |
1260 | }/*-------------------------< PM1_DATA >-------------------------*/,{ | |
1261 | /* | |
1262 | * Read our host flags to SFBR, so we will be able | |
1263 | * to check against the data direction we expect. | |
1264 | */ | |
1265 | SCR_FROM_REG (HF_REG), | |
1266 | 0, | |
1267 | /* | |
1268 | * Check against actual DATA PHASE. | |
1269 | */ | |
1270 | SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN)), | |
1271 | PADDR_A (pm1_data_out), | |
1272 | /* | |
1273 | * Actual phase is DATA IN. | |
1274 | * Check against expected direction. | |
1275 | */ | |
1276 | SCR_JUMP ^ IFFALSE (MASK (HF_DATA_IN, HF_DATA_IN)), | |
1277 | PADDR_B (data_ovrun), | |
1278 | /* | |
1279 | * Keep track we are moving data from the | |
1280 | * PM1 DATA mini-script. | |
1281 | */ | |
1282 | SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM1), | |
1283 | 0, | |
1284 | /* | |
1285 | * Move the data to memory. | |
1286 | */ | |
1287 | SCR_CHMOV_TBL ^ SCR_DATA_IN, | |
1288 | offsetof (struct sym_ccb, phys.pm1.sg), | |
1289 | SCR_JUMP, | |
1290 | PADDR_A (pm1_data_end), | |
1291 | }/*-------------------------< PM1_DATA_OUT >---------------------*/,{ | |
1292 | /* | |
1293 | * Actual phase is DATA OUT. | |
1294 | * Check against expected direction. | |
1295 | */ | |
1296 | SCR_JUMP ^ IFTRUE (MASK (HF_DATA_IN, HF_DATA_IN)), | |
1297 | PADDR_B (data_ovrun), | |
1298 | /* | |
1299 | * Keep track we are moving data from the | |
1300 | * PM1 DATA mini-script. | |
1301 | */ | |
1302 | SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM1), | |
1303 | 0, | |
1304 | /* | |
1305 | * Move the data from memory. | |
1306 | */ | |
1307 | SCR_CHMOV_TBL ^ SCR_DATA_OUT, | |
1308 | offsetof (struct sym_ccb, phys.pm1.sg), | |
1309 | }/*-------------------------< PM1_DATA_END >---------------------*/,{ | |
1310 | /* | |
1311 | * Clear the flag that told we were moving | |
1312 | * data from the PM1 DATA mini-script. | |
1313 | */ | |
1314 | SCR_REG_REG (HF_REG, SCR_AND, (~HF_IN_PM1)), | |
1315 | 0, | |
1316 | /* | |
1317 | * Return to the previous DATA script which | |
1318 | * is guaranteed by design (if no bug) to be | |
1319 | * the main DATA script for this transfer. | |
1320 | */ | |
1321 | SCR_COPY (4), | |
1322 | RADDR_1 (dsa), | |
1323 | RADDR_1 (scratcha), | |
1324 | SCR_REG_REG (scratcha, SCR_ADD, offsetof (struct sym_ccb,phys.pm1.ret)), | |
1325 | 0, | |
1326 | SCR_JUMP, | |
1327 | PADDR_A (pm_data_end), | |
1328 | }/*--------------------------<>----------------------------------*/ | |
1329 | }; | |
1330 | ||
1331 | static struct SYM_FWB_SCR SYM_FWB_SCR = { | |
1332 | /*-------------------------< NO_DATA >--------------------------*/ { | |
1333 | SCR_JUMP, | |
1334 | PADDR_B (data_ovrun), | |
1335 | }/*-------------------------< SEL_FOR_ABORT >--------------------*/,{ | |
1336 | /* | |
1337 | * We are jumped here by the C code, if we have | |
1338 | * some target to reset or some disconnected | |
1339 | * job to abort. Since error recovery is a serious | |
1340 | * busyness, we will really reset the SCSI BUS, if | |
1341 | * case of a SCSI interrupt occurring in this path. | |
1342 | */ | |
1343 | ||
1344 | #ifdef SYM_CONF_TARGET_ROLE_SUPPORT | |
1345 | /* | |
1346 | * Set initiator mode. | |
1347 | */ | |
1348 | SCR_CLR (SCR_TRG), | |
1349 | 0, | |
1350 | #endif | |
1351 | /* | |
1352 | * And try to select this target. | |
1353 | */ | |
1354 | SCR_SEL_TBL_ATN ^ offsetof (struct sym_hcb, abrt_sel), | |
1355 | PADDR_A (reselect), | |
1356 | /* | |
1357 | * Wait for the selection to complete or | |
1358 | * the selection to time out. | |
1359 | */ | |
1360 | SCR_JUMPR ^ IFFALSE (WHEN (SCR_MSG_OUT)), | |
1361 | -8, | |
1362 | /* | |
1363 | * Call the C code. | |
1364 | */ | |
1365 | SCR_INT, | |
1366 | SIR_TARGET_SELECTED, | |
1367 | /* | |
1368 | * The C code should let us continue here. | |
1369 | * Send the 'kiss of death' message. | |
1370 | * We expect an immediate disconnect once | |
1371 | * the target has eaten the message. | |
1372 | */ | |
1373 | SCR_REG_REG (scntl2, SCR_AND, 0x7f), | |
1374 | 0, | |
1375 | SCR_MOVE_TBL ^ SCR_MSG_OUT, | |
1376 | offsetof (struct sym_hcb, abrt_tbl), | |
1377 | SCR_CLR (SCR_ACK|SCR_ATN), | |
1378 | 0, | |
1379 | SCR_WAIT_DISC, | |
1380 | 0, | |
1381 | /* | |
1382 | * Tell the C code that we are done. | |
1383 | */ | |
1384 | SCR_INT, | |
1385 | SIR_ABORT_SENT, | |
1386 | }/*-------------------------< SEL_FOR_ABORT_1 >------------------*/,{ | |
1387 | /* | |
1388 | * Jump at scheduler. | |
1389 | */ | |
1390 | SCR_JUMP, | |
1391 | PADDR_A (start), | |
1392 | }/*-------------------------< MSG_IN_ETC >-----------------------*/,{ | |
1393 | /* | |
1394 | * If it is an EXTENDED (variable size message) | |
1395 | * Handle it. | |
1396 | */ | |
1397 | SCR_JUMP ^ IFTRUE (DATA (M_EXTENDED)), | |
1398 | PADDR_B (msg_extended), | |
1399 | /* | |
1400 | * Let the C code handle any other | |
1401 | * 1 byte message. | |
1402 | */ | |
1403 | SCR_JUMP ^ IFTRUE (MASK (0x00, 0xf0)), | |
1404 | PADDR_B (msg_received), | |
1405 | SCR_JUMP ^ IFTRUE (MASK (0x10, 0xf0)), | |
1406 | PADDR_B (msg_received), | |
1407 | /* | |
1408 | * We donnot handle 2 bytes messages from SCRIPTS. | |
1409 | * So, let the C code deal with these ones too. | |
1410 | */ | |
1411 | SCR_JUMP ^ IFFALSE (MASK (0x20, 0xf0)), | |
1412 | PADDR_B (msg_weird_seen), | |
1413 | SCR_CLR (SCR_ACK), | |
1414 | 0, | |
1415 | SCR_MOVE_ABS (1) ^ SCR_MSG_IN, | |
1416 | HADDR_1 (msgin[1]), | |
1417 | }/*-------------------------< MSG_RECEIVED >---------------------*/,{ | |
1418 | SCR_COPY (4), /* DUMMY READ */ | |
1419 | HADDR_1 (scratch), | |
1420 | RADDR_1 (scratcha), | |
1421 | SCR_INT, | |
1422 | SIR_MSG_RECEIVED, | |
1423 | }/*-------------------------< MSG_WEIRD_SEEN >-------------------*/,{ | |
1424 | SCR_COPY (4), /* DUMMY READ */ | |
1425 | HADDR_1 (scratch), | |
1426 | RADDR_1 (scratcha), | |
1427 | SCR_INT, | |
1428 | SIR_MSG_WEIRD, | |
1429 | }/*-------------------------< MSG_EXTENDED >---------------------*/,{ | |
1430 | /* | |
1431 | * Clear ACK and get the next byte | |
1432 | * assumed to be the message length. | |
1433 | */ | |
1434 | SCR_CLR (SCR_ACK), | |
1435 | 0, | |
1436 | SCR_MOVE_ABS (1) ^ SCR_MSG_IN, | |
1437 | HADDR_1 (msgin[1]), | |
1438 | /* | |
1439 | * Try to catch some unlikely situations as 0 length | |
1440 | * or too large the length. | |
1441 | */ | |
1442 | SCR_JUMP ^ IFTRUE (DATA (0)), | |
1443 | PADDR_B (msg_weird_seen), | |
1444 | SCR_TO_REG (scratcha), | |
1445 | 0, | |
1446 | SCR_REG_REG (sfbr, SCR_ADD, (256-8)), | |
1447 | 0, | |
1448 | SCR_JUMP ^ IFTRUE (CARRYSET), | |
1449 | PADDR_B (msg_weird_seen), | |
1450 | /* | |
1451 | * We donnot handle extended messages from SCRIPTS. | |
25985edc | 1452 | * Read the amount of data corresponding to the |
1da177e4 LT |
1453 | * message length and call the C code. |
1454 | */ | |
1455 | SCR_COPY (1), | |
1456 | RADDR_1 (scratcha), | |
1457 | PADDR_B (_sms_b10), | |
1458 | SCR_CLR (SCR_ACK), | |
1459 | 0, | |
1460 | }/*-------------------------< _SMS_B10 >-------------------------*/,{ | |
1461 | SCR_MOVE_ABS (0) ^ SCR_MSG_IN, | |
1462 | HADDR_1 (msgin[2]), | |
1463 | SCR_JUMP, | |
1464 | PADDR_B (msg_received), | |
1465 | }/*-------------------------< MSG_BAD >--------------------------*/,{ | |
1466 | /* | |
1467 | * unimplemented message - reject it. | |
1468 | */ | |
1469 | SCR_INT, | |
1470 | SIR_REJECT_TO_SEND, | |
1471 | SCR_SET (SCR_ATN), | |
1472 | 0, | |
1473 | SCR_JUMP, | |
1474 | PADDR_A (clrack), | |
1475 | }/*-------------------------< MSG_WEIRD >------------------------*/,{ | |
1476 | /* | |
1477 | * weird message received | |
1478 | * ignore all MSG IN phases and reject it. | |
1479 | */ | |
1480 | SCR_INT, | |
1481 | SIR_REJECT_TO_SEND, | |
1482 | SCR_SET (SCR_ATN), | |
1483 | 0, | |
1484 | }/*-------------------------< MSG_WEIRD1 >-----------------------*/,{ | |
1485 | SCR_CLR (SCR_ACK), | |
1486 | 0, | |
1487 | SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)), | |
1488 | PADDR_A (dispatch), | |
1489 | SCR_MOVE_ABS (1) ^ SCR_MSG_IN, | |
1490 | HADDR_1 (scratch), | |
1491 | SCR_JUMP, | |
1492 | PADDR_B (msg_weird1), | |
1493 | }/*-------------------------< WDTR_RESP >------------------------*/,{ | |
1494 | /* | |
1495 | * let the target fetch our answer. | |
1496 | */ | |
1497 | SCR_SET (SCR_ATN), | |
1498 | 0, | |
1499 | SCR_CLR (SCR_ACK), | |
1500 | 0, | |
1501 | SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_OUT)), | |
1502 | PADDR_B (nego_bad_phase), | |
1503 | }/*-------------------------< SEND_WDTR >------------------------*/,{ | |
1504 | /* | |
1505 | * Send the M_X_WIDE_REQ | |
1506 | */ | |
1507 | SCR_MOVE_ABS (4) ^ SCR_MSG_OUT, | |
1508 | HADDR_1 (msgout), | |
1509 | SCR_JUMP, | |
1510 | PADDR_B (msg_out_done), | |
1511 | }/*-------------------------< SDTR_RESP >------------------------*/,{ | |
1512 | /* | |
1513 | * let the target fetch our answer. | |
1514 | */ | |
1515 | SCR_SET (SCR_ATN), | |
1516 | 0, | |
1517 | SCR_CLR (SCR_ACK), | |
1518 | 0, | |
1519 | SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_OUT)), | |
1520 | PADDR_B (nego_bad_phase), | |
1521 | }/*-------------------------< SEND_SDTR >------------------------*/,{ | |
1522 | /* | |
1523 | * Send the M_X_SYNC_REQ | |
1524 | */ | |
1525 | SCR_MOVE_ABS (5) ^ SCR_MSG_OUT, | |
1526 | HADDR_1 (msgout), | |
1527 | SCR_JUMP, | |
1528 | PADDR_B (msg_out_done), | |
1529 | }/*-------------------------< PPR_RESP >-------------------------*/,{ | |
1530 | /* | |
1531 | * let the target fetch our answer. | |
1532 | */ | |
1533 | SCR_SET (SCR_ATN), | |
1534 | 0, | |
1535 | SCR_CLR (SCR_ACK), | |
1536 | 0, | |
1537 | SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_OUT)), | |
1538 | PADDR_B (nego_bad_phase), | |
1539 | }/*-------------------------< SEND_PPR >-------------------------*/,{ | |
1540 | /* | |
1541 | * Send the M_X_PPR_REQ | |
1542 | */ | |
1543 | SCR_MOVE_ABS (8) ^ SCR_MSG_OUT, | |
1544 | HADDR_1 (msgout), | |
1545 | SCR_JUMP, | |
1546 | PADDR_B (msg_out_done), | |
1547 | }/*-------------------------< NEGO_BAD_PHASE >-------------------*/,{ | |
1548 | SCR_INT, | |
1549 | SIR_NEGO_PROTO, | |
1550 | SCR_JUMP, | |
1551 | PADDR_A (dispatch), | |
1552 | }/*-------------------------< MSG_OUT >--------------------------*/,{ | |
1553 | /* | |
1554 | * The target requests a message. | |
1555 | * We donnot send messages that may | |
1556 | * require the device to go to bus free. | |
1557 | */ | |
1558 | SCR_MOVE_ABS (1) ^ SCR_MSG_OUT, | |
1559 | HADDR_1 (msgout), | |
1560 | /* | |
1561 | * ... wait for the next phase | |
1562 | * if it's a message out, send it again, ... | |
1563 | */ | |
1564 | SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_OUT)), | |
1565 | PADDR_B (msg_out), | |
1566 | }/*-------------------------< MSG_OUT_DONE >---------------------*/,{ | |
1567 | /* | |
1568 | * Let the C code be aware of the | |
1569 | * sent message and clear the message. | |
1570 | */ | |
1571 | SCR_INT, | |
1572 | SIR_MSG_OUT_DONE, | |
1573 | /* | |
1574 | * ... and process the next phase | |
1575 | */ | |
1576 | SCR_JUMP, | |
1577 | PADDR_A (dispatch), | |
1578 | }/*-------------------------< DATA_OVRUN >-----------------------*/,{ | |
1579 | /* | |
1580 | * Zero scratcha that will count the | |
1581 | * extras bytes. | |
1582 | */ | |
1583 | SCR_COPY (4), | |
1584 | PADDR_B (zero), | |
1585 | RADDR_1 (scratcha), | |
1586 | }/*-------------------------< DATA_OVRUN1 >----------------------*/,{ | |
1587 | /* | |
1588 | * The target may want to transfer too much data. | |
1589 | * | |
1590 | * If phase is DATA OUT write 1 byte and count it. | |
1591 | */ | |
1592 | SCR_JUMPR ^ IFFALSE (WHEN (SCR_DATA_OUT)), | |
1593 | 16, | |
1594 | SCR_CHMOV_ABS (1) ^ SCR_DATA_OUT, | |
1595 | HADDR_1 (scratch), | |
1596 | SCR_JUMP, | |
1597 | PADDR_B (data_ovrun2), | |
1598 | /* | |
1599 | * If WSR is set, clear this condition, and | |
1600 | * count this byte. | |
1601 | */ | |
1602 | SCR_FROM_REG (scntl2), | |
1603 | 0, | |
1604 | SCR_JUMPR ^ IFFALSE (MASK (WSR, WSR)), | |
1605 | 16, | |
1606 | SCR_REG_REG (scntl2, SCR_OR, WSR), | |
1607 | 0, | |
1608 | SCR_JUMP, | |
1609 | PADDR_B (data_ovrun2), | |
1610 | /* | |
1611 | * Finally check against DATA IN phase. | |
1612 | * Signal data overrun to the C code | |
1613 | * and jump to dispatcher if not so. | |
1614 | * Read 1 byte otherwise and count it. | |
1615 | */ | |
1616 | SCR_JUMPR ^ IFTRUE (WHEN (SCR_DATA_IN)), | |
1617 | 16, | |
1618 | SCR_INT, | |
1619 | SIR_DATA_OVERRUN, | |
1620 | SCR_JUMP, | |
1621 | PADDR_A (dispatch), | |
1622 | SCR_CHMOV_ABS (1) ^ SCR_DATA_IN, | |
1623 | HADDR_1 (scratch), | |
1624 | }/*-------------------------< DATA_OVRUN2 >----------------------*/,{ | |
1625 | /* | |
1626 | * Count this byte. | |
1627 | * This will allow to return a negative | |
1628 | * residual to user. | |
1629 | */ | |
1630 | SCR_REG_REG (scratcha, SCR_ADD, 0x01), | |
1631 | 0, | |
1632 | SCR_REG_REG (scratcha1, SCR_ADDC, 0), | |
1633 | 0, | |
1634 | SCR_REG_REG (scratcha2, SCR_ADDC, 0), | |
1635 | 0, | |
1636 | /* | |
1637 | * .. and repeat as required. | |
1638 | */ | |
1639 | SCR_JUMP, | |
1640 | PADDR_B (data_ovrun1), | |
1641 | }/*-------------------------< ABORT_RESEL >----------------------*/,{ | |
1642 | SCR_SET (SCR_ATN), | |
1643 | 0, | |
1644 | SCR_CLR (SCR_ACK), | |
1645 | 0, | |
1646 | /* | |
1647 | * send the abort/abortag/reset message | |
1648 | * we expect an immediate disconnect | |
1649 | */ | |
1650 | SCR_REG_REG (scntl2, SCR_AND, 0x7f), | |
1651 | 0, | |
1652 | SCR_MOVE_ABS (1) ^ SCR_MSG_OUT, | |
1653 | HADDR_1 (msgout), | |
1654 | SCR_CLR (SCR_ACK|SCR_ATN), | |
1655 | 0, | |
1656 | SCR_WAIT_DISC, | |
1657 | 0, | |
1658 | SCR_INT, | |
1659 | SIR_RESEL_ABORTED, | |
1660 | SCR_JUMP, | |
1661 | PADDR_A (start), | |
1662 | }/*-------------------------< RESEND_IDENT >---------------------*/,{ | |
1663 | /* | |
1664 | * The target stays in MSG OUT phase after having acked | |
1665 | * Identify [+ Tag [+ Extended message ]]. Targets shall | |
1666 | * behave this way on parity error. | |
1667 | * We must send it again all the messages. | |
1668 | */ | |
1669 | SCR_SET (SCR_ATN), /* Shall be asserted 2 deskew delays before the */ | |
1670 | 0, /* 1rst ACK = 90 ns. Hope the chip isn't too fast */ | |
1671 | SCR_JUMP, | |
1672 | PADDR_A (send_ident), | |
1673 | }/*-------------------------< IDENT_BREAK >----------------------*/,{ | |
1674 | SCR_CLR (SCR_ATN), | |
1675 | 0, | |
1676 | SCR_JUMP, | |
1677 | PADDR_A (select2), | |
1678 | }/*-------------------------< IDENT_BREAK_ATN >------------------*/,{ | |
1679 | SCR_SET (SCR_ATN), | |
1680 | 0, | |
1681 | SCR_JUMP, | |
1682 | PADDR_A (select2), | |
1683 | }/*-------------------------< SDATA_IN >-------------------------*/,{ | |
1684 | SCR_CHMOV_TBL ^ SCR_DATA_IN, | |
1685 | offsetof (struct sym_dsb, sense), | |
1686 | SCR_CALL, | |
1687 | PADDR_A (datai_done), | |
1688 | SCR_JUMP, | |
1689 | PADDR_B (data_ovrun), | |
1690 | }/*-------------------------< RESEL_BAD_LUN >--------------------*/,{ | |
1691 | /* | |
1692 | * Message is an IDENTIFY, but lun is unknown. | |
1693 | * Signal problem to C code for logging the event. | |
1694 | * Send a M_ABORT to clear all pending tasks. | |
1695 | */ | |
1696 | SCR_INT, | |
1697 | SIR_RESEL_BAD_LUN, | |
1698 | SCR_JUMP, | |
1699 | PADDR_B (abort_resel), | |
1700 | }/*-------------------------< BAD_I_T_L >------------------------*/,{ | |
1701 | /* | |
1702 | * We donnot have a task for that I_T_L. | |
1703 | * Signal problem to C code for logging the event. | |
1704 | * Send a M_ABORT message. | |
1705 | */ | |
1706 | SCR_INT, | |
1707 | SIR_RESEL_BAD_I_T_L, | |
1708 | SCR_JUMP, | |
1709 | PADDR_B (abort_resel), | |
1710 | }/*-------------------------< BAD_I_T_L_Q >----------------------*/,{ | |
1711 | /* | |
1712 | * We donnot have a task that matches the tag. | |
1713 | * Signal problem to C code for logging the event. | |
1714 | * Send a M_ABORTTAG message. | |
1715 | */ | |
1716 | SCR_INT, | |
1717 | SIR_RESEL_BAD_I_T_L_Q, | |
1718 | SCR_JUMP, | |
1719 | PADDR_B (abort_resel), | |
1720 | }/*-------------------------< BAD_STATUS >-----------------------*/,{ | |
1721 | /* | |
1722 | * Anything different from INTERMEDIATE | |
1723 | * CONDITION MET should be a bad SCSI status, | |
1724 | * given that GOOD status has already been tested. | |
1725 | * Call the C code. | |
1726 | */ | |
1727 | SCR_COPY (4), | |
1728 | PADDR_B (startpos), | |
1729 | RADDR_1 (scratcha), | |
1730 | SCR_INT ^ IFFALSE (DATA (S_COND_MET)), | |
1731 | SIR_BAD_SCSI_STATUS, | |
1732 | SCR_RETURN, | |
1733 | 0, | |
1734 | }/*-------------------------< WSR_MA_HELPER >--------------------*/,{ | |
1735 | /* | |
1736 | * Helper for the C code when WSR bit is set. | |
1737 | * Perform the move of the residual byte. | |
1738 | */ | |
1739 | SCR_CHMOV_TBL ^ SCR_DATA_IN, | |
1740 | offsetof (struct sym_ccb, phys.wresid), | |
1741 | SCR_JUMP, | |
1742 | PADDR_A (dispatch), | |
1743 | ||
1da177e4 LT |
1744 | }/*-------------------------< ZERO >-----------------------------*/,{ |
1745 | SCR_DATA_ZERO, | |
1746 | }/*-------------------------< SCRATCH >--------------------------*/,{ | |
1747 | SCR_DATA_ZERO, /* MUST BE BEFORE SCRATCH1 */ | |
1748 | }/*-------------------------< SCRATCH1 >-------------------------*/,{ | |
1749 | SCR_DATA_ZERO, | |
1750 | }/*-------------------------< PREV_DONE >------------------------*/,{ | |
1751 | SCR_DATA_ZERO, /* MUST BE BEFORE DONE_POS ! */ | |
1752 | }/*-------------------------< DONE_POS >-------------------------*/,{ | |
1753 | SCR_DATA_ZERO, | |
1754 | }/*-------------------------< NEXTJOB >--------------------------*/,{ | |
1755 | SCR_DATA_ZERO, /* MUST BE BEFORE STARTPOS ! */ | |
1756 | }/*-------------------------< STARTPOS >-------------------------*/,{ | |
1757 | SCR_DATA_ZERO, | |
1758 | }/*-------------------------< TARGTBL >--------------------------*/,{ | |
1759 | SCR_DATA_ZERO, | |
1760 | }/*--------------------------<>----------------------------------*/ | |
1761 | }; | |
1762 | ||
1763 | static struct SYM_FWZ_SCR SYM_FWZ_SCR = { | |
1764 | /*-------------------------< SNOOPTEST >------------------------*/{ | |
1765 | /* | |
1766 | * Read the variable. | |
1767 | */ | |
1768 | SCR_COPY (4), | |
1769 | HADDR_1 (scratch), | |
1770 | RADDR_1 (scratcha), | |
1771 | /* | |
1772 | * Write the variable. | |
1773 | */ | |
1774 | SCR_COPY (4), | |
1775 | RADDR_1 (temp), | |
1776 | HADDR_1 (scratch), | |
1777 | /* | |
1778 | * Read back the variable. | |
1779 | */ | |
1780 | SCR_COPY (4), | |
1781 | HADDR_1 (scratch), | |
1782 | RADDR_1 (temp), | |
1783 | }/*-------------------------< SNOOPEND >-------------------------*/,{ | |
1784 | /* | |
1785 | * And stop. | |
1786 | */ | |
1787 | SCR_INT, | |
1788 | 99, | |
1789 | }/*--------------------------<>----------------------------------*/ | |
1790 | }; |