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Use access mode instead of open flags to determine needed permissions
[pv_ops_mirror.git] / drivers / scsi / ncr53c8xx.h
blob0e008dacf679c0df060c9af4c50efb7272a2e2ea
1 /******************************************************************************
2 ** Device driver for the PCI-SCSI NCR538XX controller family.
3 **
4 ** Copyright (C) 1994 Wolfgang Stanglmeier
5 ** Copyright (C) 1998-2001 Gerard Roudier <groudier@free.fr>
6 **
7 ** This program is free software; you can redistribute it and/or modify
8 ** it under the terms of the GNU General Public License as published by
9 ** the Free Software Foundation; either version 2 of the License, or
10 ** (at your option) any later version.
11 **
12 ** This program is distributed in the hope that it will be useful,
13 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ** GNU General Public License for more details.
16 **
17 ** You should have received a copy of the GNU General Public License
18 ** along with this program; if not, write to the Free Software
19 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 **
21 **-----------------------------------------------------------------------------
22 **
23 ** This driver has been ported to Linux from the FreeBSD NCR53C8XX driver
24 ** and is currently maintained by
25 **
26 ** Gerard Roudier <groudier@free.fr>
27 **
28 ** Being given that this driver originates from the FreeBSD version, and
29 ** in order to keep synergy on both, any suggested enhancements and corrections
30 ** received on Linux are automatically a potential candidate for the FreeBSD
31 ** version.
32 **
33 ** The original driver has been written for 386bsd and FreeBSD by
34 ** Wolfgang Stanglmeier <wolf@cologne.de>
35 ** Stefan Esser <se@mi.Uni-Koeln.de>
36 **
37 ** And has been ported to NetBSD by
38 ** Charles M. Hannum <mycroft@gnu.ai.mit.edu>
39 **
40 ** NVRAM detection and reading.
41 ** Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
42 **
43 ** Added support for MIPS big endian systems.
44 ** Carsten Langgaard, carstenl@mips.com
45 ** Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
46 **
47 ** Added support for HP PARISC big endian systems.
48 ** Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
49 **
50 *******************************************************************************
51 */
52
53 #ifndef NCR53C8XX_H
54 #define NCR53C8XX_H
55
56 #include <scsi/scsi_host.h>
57
58
59 /*
60 ** If you want a driver as small as possible, donnot define the
61 ** following options.
62 */
63 #define SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT
64 #define SCSI_NCR_DEBUG_INFO_SUPPORT
65
66 /*
67 ** To disable integrity checking, do not define the
68 ** following option.
69 */
70 #ifdef CONFIG_SCSI_NCR53C8XX_INTEGRITY_CHECK
71 # define SCSI_NCR_ENABLE_INTEGRITY_CHECK
72 #endif
73
74 /* ---------------------------------------------------------------------
75 ** Take into account kernel configured parameters.
76 ** Most of these options can be overridden at startup by a command line.
77 ** ---------------------------------------------------------------------
78 */
79
80 /*
81 * For Ultra2 and Ultra3 SCSI support option, use special features.
82 *
83 * Value (default) means:
84 * bit 0 : all features enabled, except:
85 * bit 1 : PCI Write And Invalidate.
86 * bit 2 : Data Phase Mismatch handling from SCRIPTS.
87 *
88 * Use boot options ncr53c8xx=specf:1 if you want all chip features to be
89 * enabled by the driver.
90 */
91 #define SCSI_NCR_SETUP_SPECIAL_FEATURES (3)
92
93 #define SCSI_NCR_MAX_SYNC (80)
94
95 /*
96 * Allow tags from 2 to 256, default 8
97 */
98 #ifdef CONFIG_SCSI_NCR53C8XX_MAX_TAGS
99 #if CONFIG_SCSI_NCR53C8XX_MAX_TAGS < 2
100 #define SCSI_NCR_MAX_TAGS (2)
101 #elif CONFIG_SCSI_NCR53C8XX_MAX_TAGS > 256
102 #define SCSI_NCR_MAX_TAGS (256)
103 #else
104 #define SCSI_NCR_MAX_TAGS CONFIG_SCSI_NCR53C8XX_MAX_TAGS
105 #endif
106 #else
107 #define SCSI_NCR_MAX_TAGS (8)
108 #endif
109
110 /*
111 * Allow tagged command queuing support if configured with default number
112 * of tags set to max (see above).
113 */
114 #ifdef CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS
115 #define SCSI_NCR_SETUP_DEFAULT_TAGS CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS
116 #elif defined CONFIG_SCSI_NCR53C8XX_TAGGED_QUEUE
117 #define SCSI_NCR_SETUP_DEFAULT_TAGS SCSI_NCR_MAX_TAGS
118 #else
119 #define SCSI_NCR_SETUP_DEFAULT_TAGS (0)
120 #endif
121
122 /*
123 * Immediate arbitration
124 */
125 #if defined(CONFIG_SCSI_NCR53C8XX_IARB)
126 #define SCSI_NCR_IARB_SUPPORT
127 #endif
128
129 /*
130 * Sync transfer frequency at startup.
131 * Allow from 5Mhz to 80Mhz default 20 Mhz.
132 */
133 #ifndef CONFIG_SCSI_NCR53C8XX_SYNC
134 #define CONFIG_SCSI_NCR53C8XX_SYNC (20)
135 #elif CONFIG_SCSI_NCR53C8XX_SYNC > SCSI_NCR_MAX_SYNC
136 #undef CONFIG_SCSI_NCR53C8XX_SYNC
137 #define CONFIG_SCSI_NCR53C8XX_SYNC SCSI_NCR_MAX_SYNC
138 #endif
139
140 #if CONFIG_SCSI_NCR53C8XX_SYNC == 0
141 #define SCSI_NCR_SETUP_DEFAULT_SYNC (255)
142 #elif CONFIG_SCSI_NCR53C8XX_SYNC <= 5
143 #define SCSI_NCR_SETUP_DEFAULT_SYNC (50)
144 #elif CONFIG_SCSI_NCR53C8XX_SYNC <= 20
145 #define SCSI_NCR_SETUP_DEFAULT_SYNC (250/(CONFIG_SCSI_NCR53C8XX_SYNC))
146 #elif CONFIG_SCSI_NCR53C8XX_SYNC <= 33
147 #define SCSI_NCR_SETUP_DEFAULT_SYNC (11)
148 #elif CONFIG_SCSI_NCR53C8XX_SYNC <= 40
149 #define SCSI_NCR_SETUP_DEFAULT_SYNC (10)
150 #else
151 #define SCSI_NCR_SETUP_DEFAULT_SYNC (9)
152 #endif
153
154 /*
155 * Disallow disconnections at boot-up
156 */
157 #ifdef CONFIG_SCSI_NCR53C8XX_NO_DISCONNECT
158 #define SCSI_NCR_SETUP_DISCONNECTION (0)
159 #else
160 #define SCSI_NCR_SETUP_DISCONNECTION (1)
161 #endif
162
163 /*
164 * Force synchronous negotiation for all targets
165 */
166 #ifdef CONFIG_SCSI_NCR53C8XX_FORCE_SYNC_NEGO
167 #define SCSI_NCR_SETUP_FORCE_SYNC_NEGO (1)
168 #else
169 #define SCSI_NCR_SETUP_FORCE_SYNC_NEGO (0)
170 #endif
171
172 /*
173 * Disable master parity checking (flawed hardwares need that)
174 */
175 #ifdef CONFIG_SCSI_NCR53C8XX_DISABLE_MPARITY_CHECK
176 #define SCSI_NCR_SETUP_MASTER_PARITY (0)
177 #else
178 #define SCSI_NCR_SETUP_MASTER_PARITY (1)
179 #endif
180
181 /*
182 * Disable scsi parity checking (flawed devices may need that)
183 */
184 #ifdef CONFIG_SCSI_NCR53C8XX_DISABLE_PARITY_CHECK
185 #define SCSI_NCR_SETUP_SCSI_PARITY (0)
186 #else
187 #define SCSI_NCR_SETUP_SCSI_PARITY (1)
188 #endif
189
190 /*
191 * Settle time after reset at boot-up
192 */
193 #define SCSI_NCR_SETUP_SETTLE_TIME (2)
194
195 /*
196 ** Bridge quirks work-around option defaulted to 1.
197 */
198 #ifndef SCSI_NCR_PCIQ_WORK_AROUND_OPT
199 #define SCSI_NCR_PCIQ_WORK_AROUND_OPT 1
200 #endif
201
202 /*
203 ** Work-around common bridge misbehaviour.
204 **
205 ** - Do not flush posted writes in the opposite
206 ** direction on read.
207 ** - May reorder DMA writes to memory.
208 **
209 ** This option should not affect performances
210 ** significantly, so it is the default.
211 */
212 #if SCSI_NCR_PCIQ_WORK_AROUND_OPT == 1
213 #define SCSI_NCR_PCIQ_MAY_NOT_FLUSH_PW_UPSTREAM
214 #define SCSI_NCR_PCIQ_MAY_REORDER_WRITES
215 #define SCSI_NCR_PCIQ_MAY_MISS_COMPLETIONS
216
217 /*
218 ** Same as option 1, but also deal with
219 ** misconfigured interrupts.
220 **
221 ** - Edge triggered instead of level sensitive.
222 ** - No interrupt line connected.
223 ** - IRQ number misconfigured.
224 **
225 ** If no interrupt is delivered, the driver will
226 ** catch the interrupt conditions 10 times per
227 ** second. No need to say that this option is
228 ** not recommended.
229 */
230 #elif SCSI_NCR_PCIQ_WORK_AROUND_OPT == 2
231 #define SCSI_NCR_PCIQ_MAY_NOT_FLUSH_PW_UPSTREAM
232 #define SCSI_NCR_PCIQ_MAY_REORDER_WRITES
233 #define SCSI_NCR_PCIQ_MAY_MISS_COMPLETIONS
234 #define SCSI_NCR_PCIQ_BROKEN_INTR
235
236 /*
237 ** Some bridge designers decided to flush
238 ** everything prior to deliver the interrupt.
239 ** This option tries to deal with such a
240 ** behaviour.
241 */
242 #elif SCSI_NCR_PCIQ_WORK_AROUND_OPT == 3
243 #define SCSI_NCR_PCIQ_SYNC_ON_INTR
244 #endif
245
246 /*
247 ** Other parameters not configurable with "make config"
248 ** Avoid to change these constants, unless you know what you are doing.
249 */
250
251 #define SCSI_NCR_ALWAYS_SIMPLE_TAG
252 #define SCSI_NCR_MAX_SCATTER (127)
253 #define SCSI_NCR_MAX_TARGET (16)
254
255 /*
256 ** Compute some desirable value for CAN_QUEUE
257 ** and CMD_PER_LUN.
258 ** The driver will use lower values if these
259 ** ones appear to be too large.
260 */
261 #define SCSI_NCR_CAN_QUEUE (8*SCSI_NCR_MAX_TAGS + 2*SCSI_NCR_MAX_TARGET)
262 #define SCSI_NCR_CMD_PER_LUN (SCSI_NCR_MAX_TAGS)
263
264 #define SCSI_NCR_SG_TABLESIZE (SCSI_NCR_MAX_SCATTER)
265 #define SCSI_NCR_TIMER_INTERVAL (HZ)
266
267 #if 1 /* defined CONFIG_SCSI_MULTI_LUN */
268 #define SCSI_NCR_MAX_LUN (16)
269 #else
270 #define SCSI_NCR_MAX_LUN (1)
271 #endif
272
273 /*
274 * IO functions definition for big/little endian CPU support.
275 * For now, the NCR is only supported in little endian addressing mode,
276 */
277
278 #ifdef __BIG_ENDIAN
279
280 #define inw_l2b inw
281 #define inl_l2b inl
282 #define outw_b2l outw
283 #define outl_b2l outl
284
285 #define readb_raw readb
286 #define writeb_raw writeb
287
288 #if defined(SCSI_NCR_BIG_ENDIAN)
289 #define readw_l2b __raw_readw
290 #define readl_l2b __raw_readl
291 #define writew_b2l __raw_writew
292 #define writel_b2l __raw_writel
293 #define readw_raw __raw_readw
294 #define readl_raw __raw_readl
295 #define writew_raw __raw_writew
296 #define writel_raw __raw_writel
297 #else /* Other big-endian */
298 #define readw_l2b readw
299 #define readl_l2b readl
300 #define writew_b2l writew
301 #define writel_b2l writel
302 #define readw_raw readw
303 #define readl_raw readl
304 #define writew_raw writew
305 #define writel_raw writel
306 #endif
307
308 #else /* little endian */
309
310 #define inw_raw inw
311 #define inl_raw inl
312 #define outw_raw outw
313 #define outl_raw outl
314
315 #define readb_raw readb
316 #define readw_raw readw
317 #define readl_raw readl
318 #define writeb_raw writeb
319 #define writew_raw writew
320 #define writel_raw writel
321
322 #endif
323
324 #if !defined(__hppa__) && !defined(__mips__)
325 #ifdef SCSI_NCR_BIG_ENDIAN
326 #error "The NCR in BIG ENDIAN addressing mode is not (yet) supported"
327 #endif
328 #endif
329
330 #define MEMORY_BARRIER() mb()
331
332
333 /*
334 * If the NCR uses big endian addressing mode over the
335 * PCI, actual io register addresses for byte and word
336 * accesses must be changed according to lane routing.
337 * Btw, ncr_offb() and ncr_offw() macros only apply to
338 * constants and so donnot generate bloated code.
339 */
340
341 #if defined(SCSI_NCR_BIG_ENDIAN)
342
343 #define ncr_offb(o) (((o)&~3)+((~((o)&3))&3))
344 #define ncr_offw(o) (((o)&~3)+((~((o)&3))&2))
345
346 #else
347
348 #define ncr_offb(o) (o)
349 #define ncr_offw(o) (o)
350
351 #endif
352
353 /*
354 * If the CPU and the NCR use same endian-ness addressing,
355 * no byte reordering is needed for script patching.
356 * Macro cpu_to_scr() is to be used for script patching.
357 * Macro scr_to_cpu() is to be used for getting a DWORD
358 * from the script.
359 */
360
361 #if defined(__BIG_ENDIAN) && !defined(SCSI_NCR_BIG_ENDIAN)
362
363 #define cpu_to_scr(dw) cpu_to_le32(dw)
364 #define scr_to_cpu(dw) le32_to_cpu(dw)
365
366 #elif defined(__LITTLE_ENDIAN) && defined(SCSI_NCR_BIG_ENDIAN)
367
368 #define cpu_to_scr(dw) cpu_to_be32(dw)
369 #define scr_to_cpu(dw) be32_to_cpu(dw)
370
371 #else
372
373 #define cpu_to_scr(dw) (dw)
374 #define scr_to_cpu(dw) (dw)
375
376 #endif
377
378 /*
379 * Access to the controller chip.
380 *
381 * If the CPU and the NCR use same endian-ness addressing,
382 * no byte reordering is needed for accessing chip io
383 * registers. Functions suffixed by '_raw' are assumed
384 * to access the chip over the PCI without doing byte
385 * reordering. Functions suffixed by '_l2b' are
386 * assumed to perform little-endian to big-endian byte
387 * reordering, those suffixed by '_b2l' blah, blah,
388 * blah, ...
389 */
390
391 /*
392 * MEMORY mapped IO input / output
393 */
394
395 #define INB_OFF(o) readb_raw((char __iomem *)np->reg + ncr_offb(o))
396 #define OUTB_OFF(o, val) writeb_raw((val), (char __iomem *)np->reg + ncr_offb(o))
397
398 #if defined(__BIG_ENDIAN) && !defined(SCSI_NCR_BIG_ENDIAN)
399
400 #define INW_OFF(o) readw_l2b((char __iomem *)np->reg + ncr_offw(o))
401 #define INL_OFF(o) readl_l2b((char __iomem *)np->reg + (o))
402
403 #define OUTW_OFF(o, val) writew_b2l((val), (char __iomem *)np->reg + ncr_offw(o))
404 #define OUTL_OFF(o, val) writel_b2l((val), (char __iomem *)np->reg + (o))
405
406 #elif defined(__LITTLE_ENDIAN) && defined(SCSI_NCR_BIG_ENDIAN)
407
408 #define INW_OFF(o) readw_b2l((char __iomem *)np->reg + ncr_offw(o))
409 #define INL_OFF(o) readl_b2l((char __iomem *)np->reg + (o))
410
411 #define OUTW_OFF(o, val) writew_l2b((val), (char __iomem *)np->reg + ncr_offw(o))
412 #define OUTL_OFF(o, val) writel_l2b((val), (char __iomem *)np->reg + (o))
413
414 #else
415
416 #ifdef CONFIG_SCSI_NCR53C8XX_NO_WORD_TRANSFERS
417 /* Only 8 or 32 bit transfers allowed */
418 #define INW_OFF(o) (readb((char __iomem *)np->reg + ncr_offw(o)) << 8 | readb((char __iomem *)np->reg + ncr_offw(o) + 1))
419 #else
420 #define INW_OFF(o) readw_raw((char __iomem *)np->reg + ncr_offw(o))
421 #endif
422 #define INL_OFF(o) readl_raw((char __iomem *)np->reg + (o))
423
424 #ifdef CONFIG_SCSI_NCR53C8XX_NO_WORD_TRANSFERS
425 /* Only 8 or 32 bit transfers allowed */
426 #define OUTW_OFF(o, val) do { writeb((char)((val) >> 8), (char __iomem *)np->reg + ncr_offw(o)); writeb((char)(val), (char __iomem *)np->reg + ncr_offw(o) + 1); } while (0)
427 #else
428 #define OUTW_OFF(o, val) writew_raw((val), (char __iomem *)np->reg + ncr_offw(o))
429 #endif
430 #define OUTL_OFF(o, val) writel_raw((val), (char __iomem *)np->reg + (o))
431
432 #endif
433
434 #define INB(r) INB_OFF (offsetof(struct ncr_reg,r))
435 #define INW(r) INW_OFF (offsetof(struct ncr_reg,r))
436 #define INL(r) INL_OFF (offsetof(struct ncr_reg,r))
437
438 #define OUTB(r, val) OUTB_OFF (offsetof(struct ncr_reg,r), (val))
439 #define OUTW(r, val) OUTW_OFF (offsetof(struct ncr_reg,r), (val))
440 #define OUTL(r, val) OUTL_OFF (offsetof(struct ncr_reg,r), (val))
441
442 /*
443 * Set bit field ON, OFF
444 */
445
446 #define OUTONB(r, m) OUTB(r, INB(r) | (m))
447 #define OUTOFFB(r, m) OUTB(r, INB(r) & ~(m))
448 #define OUTONW(r, m) OUTW(r, INW(r) | (m))
449 #define OUTOFFW(r, m) OUTW(r, INW(r) & ~(m))
450 #define OUTONL(r, m) OUTL(r, INL(r) | (m))
451 #define OUTOFFL(r, m) OUTL(r, INL(r) & ~(m))
452
453 /*
454 * We normally want the chip to have a consistent view
455 * of driver internal data structures when we restart it.
456 * Thus these macros.
457 */
458 #define OUTL_DSP(v) \
459 do { \
460 MEMORY_BARRIER(); \
461 OUTL (nc_dsp, (v)); \
462 } while (0)
463
464 #define OUTONB_STD() \
465 do { \
466 MEMORY_BARRIER(); \
467 OUTONB (nc_dcntl, (STD|NOCOM)); \
468 } while (0)
469
470
471 /*
472 ** NCR53C8XX devices features table.
473 */
474 struct ncr_chip {
475 unsigned short revision_id;
476 unsigned char burst_max; /* log-base-2 of max burst */
477 unsigned char offset_max;
478 unsigned char nr_divisor;
479 unsigned int features;
480 #define FE_LED0 (1<<0)
481 #define FE_WIDE (1<<1) /* Wide data transfers */
482 #define FE_ULTRA (1<<2) /* Ultra speed 20Mtrans/sec */
483 #define FE_DBLR (1<<4) /* Clock doubler present */
484 #define FE_QUAD (1<<5) /* Clock quadrupler present */
485 #define FE_ERL (1<<6) /* Enable read line */
486 #define FE_CLSE (1<<7) /* Cache line size enable */
487 #define FE_WRIE (1<<8) /* Write & Invalidate enable */
488 #define FE_ERMP (1<<9) /* Enable read multiple */
489 #define FE_BOF (1<<10) /* Burst opcode fetch */
490 #define FE_DFS (1<<11) /* DMA fifo size */
491 #define FE_PFEN (1<<12) /* Prefetch enable */
492 #define FE_LDSTR (1<<13) /* Load/Store supported */
493 #define FE_RAM (1<<14) /* On chip RAM present */
494 #define FE_VARCLK (1<<15) /* SCSI clock may vary */
495 #define FE_RAM8K (1<<16) /* On chip RAM sized 8Kb */
496 #define FE_64BIT (1<<17) /* Have a 64-bit PCI interface */
497 #define FE_IO256 (1<<18) /* Requires full 256 bytes in PCI space */
498 #define FE_NOPM (1<<19) /* Scripts handles phase mismatch */
499 #define FE_LEDC (1<<20) /* Hardware control of LED */
500 #define FE_DIFF (1<<21) /* Support Differential SCSI */
501 #define FE_66MHZ (1<<23) /* 66MHz PCI Support */
502 #define FE_DAC (1<<24) /* Support DAC cycles (64 bit addressing) */
503 #define FE_ISTAT1 (1<<25) /* Have ISTAT1, MBOX0, MBOX1 registers */
504 #define FE_DAC_IN_USE (1<<26) /* Platform does DAC cycles */
505 #define FE_EHP (1<<27) /* 720: Even host parity */
506 #define FE_MUX (1<<28) /* 720: Multiplexed bus */
507 #define FE_EA (1<<29) /* 720: Enable Ack */
508
509 #define FE_CACHE_SET (FE_ERL|FE_CLSE|FE_WRIE|FE_ERMP)
510 #define FE_SCSI_SET (FE_WIDE|FE_ULTRA|FE_DBLR|FE_QUAD|F_CLK80)
511 #define FE_SPECIAL_SET (FE_CACHE_SET|FE_BOF|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM)
512 };
513
514
515 /*
516 ** Driver setup structure.
517 **
518 ** This structure is initialized from linux config options.
519 ** It can be overridden at boot-up by the boot command line.
520 */
521 #define SCSI_NCR_MAX_EXCLUDES 8
522 struct ncr_driver_setup {
523 u8 master_parity;
524 u8 scsi_parity;
525 u8 disconnection;
526 u8 special_features;
527 u8 force_sync_nego;
528 u8 reverse_probe;
529 u8 pci_fix_up;
530 u8 use_nvram;
531 u8 verbose;
532 u8 default_tags;
533 u16 default_sync;
534 u16 debug;
535 u8 burst_max;
536 u8 led_pin;
537 u8 max_wide;
538 u8 settle_delay;
539 u8 diff_support;
540 u8 irqm;
541 u8 bus_check;
542 u8 optimize;
543 u8 recovery;
544 u8 host_id;
545 u16 iarb;
546 u32 excludes[SCSI_NCR_MAX_EXCLUDES];
547 char tag_ctrl[100];
548 };
549
550 /*
551 ** Initial setup.
552 ** Can be overridden at startup by a command line.
553 */
554 #define SCSI_NCR_DRIVER_SETUP \
555 { \
556 SCSI_NCR_SETUP_MASTER_PARITY, \
557 SCSI_NCR_SETUP_SCSI_PARITY, \
558 SCSI_NCR_SETUP_DISCONNECTION, \
559 SCSI_NCR_SETUP_SPECIAL_FEATURES, \
560 SCSI_NCR_SETUP_FORCE_SYNC_NEGO, \
561 0, \
562 0, \
563 1, \
564 0, \
565 SCSI_NCR_SETUP_DEFAULT_TAGS, \
566 SCSI_NCR_SETUP_DEFAULT_SYNC, \
567 0x00, \
568 7, \
569 0, \
570 1, \
571 SCSI_NCR_SETUP_SETTLE_TIME, \
572 0, \
573 0, \
574 1, \
575 0, \
576 0, \
577 255, \
578 0x00 \
579 }
580
581 /*
582 ** Boot fail safe setup.
583 ** Override initial setup from boot command line:
584 ** ncr53c8xx=safe:y
585 */
586 #define SCSI_NCR_DRIVER_SAFE_SETUP \
587 { \
588 0, \
589 1, \
590 0, \
591 0, \
592 0, \
593 0, \
594 0, \
595 1, \
596 2, \
597 0, \
598 255, \
599 0x00, \
600 255, \
601 0, \
602 0, \
603 10, \
604 1, \
605 1, \
606 1, \
607 0, \
608 0, \
609 255 \
610 }
611
612 /**************** ORIGINAL CONTENT of ncrreg.h from FreeBSD ******************/
613
614 /*-----------------------------------------------------------------
615 **
616 ** The ncr 53c810 register structure.
617 **
618 **-----------------------------------------------------------------
619 */
620
621 struct ncr_reg {
622 /*00*/ u8 nc_scntl0; /* full arb., ena parity, par->ATN */
623
624 /*01*/ u8 nc_scntl1; /* no reset */
625 #define ISCON 0x10 /* connected to scsi */
626 #define CRST 0x08 /* force reset */
627 #define IARB 0x02 /* immediate arbitration */
628
629 /*02*/ u8 nc_scntl2; /* no disconnect expected */
630 #define SDU 0x80 /* cmd: disconnect will raise error */
631 #define CHM 0x40 /* sta: chained mode */
632 #define WSS 0x08 /* sta: wide scsi send [W]*/
633 #define WSR 0x01 /* sta: wide scsi received [W]*/
634
635 /*03*/ u8 nc_scntl3; /* cnf system clock dependent */
636 #define EWS 0x08 /* cmd: enable wide scsi [W]*/
637 #define ULTRA 0x80 /* cmd: ULTRA enable */
638 /* bits 0-2, 7 rsvd for C1010 */
639
640 /*04*/ u8 nc_scid; /* cnf host adapter scsi address */
641 #define RRE 0x40 /* r/w:e enable response to resel. */
642 #define SRE 0x20 /* r/w:e enable response to select */
643
644 /*05*/ u8 nc_sxfer; /* ### Sync speed and count */
645 /* bits 6-7 rsvd for C1010 */
646
647 /*06*/ u8 nc_sdid; /* ### Destination-ID */
648
649 /*07*/ u8 nc_gpreg; /* ??? IO-Pins */
650
651 /*08*/ u8 nc_sfbr; /* ### First byte in phase */
652
653 /*09*/ u8 nc_socl;
654 #define CREQ 0x80 /* r/w: SCSI-REQ */
655 #define CACK 0x40 /* r/w: SCSI-ACK */
656 #define CBSY 0x20 /* r/w: SCSI-BSY */
657 #define CSEL 0x10 /* r/w: SCSI-SEL */
658 #define CATN 0x08 /* r/w: SCSI-ATN */
659 #define CMSG 0x04 /* r/w: SCSI-MSG */
660 #define CC_D 0x02 /* r/w: SCSI-C_D */
661 #define CI_O 0x01 /* r/w: SCSI-I_O */
662
663 /*0a*/ u8 nc_ssid;
664
665 /*0b*/ u8 nc_sbcl;
666
667 /*0c*/ u8 nc_dstat;
668 #define DFE 0x80 /* sta: dma fifo empty */
669 #define MDPE 0x40 /* int: master data parity error */
670 #define BF 0x20 /* int: script: bus fault */
671 #define ABRT 0x10 /* int: script: command aborted */
672 #define SSI 0x08 /* int: script: single step */
673 #define SIR 0x04 /* int: script: interrupt instruct. */
674 #define IID 0x01 /* int: script: illegal instruct. */
675
676 /*0d*/ u8 nc_sstat0;
677 #define ILF 0x80 /* sta: data in SIDL register lsb */
678 #define ORF 0x40 /* sta: data in SODR register lsb */
679 #define OLF 0x20 /* sta: data in SODL register lsb */
680 #define AIP 0x10 /* sta: arbitration in progress */
681 #define LOA 0x08 /* sta: arbitration lost */
682 #define WOA 0x04 /* sta: arbitration won */
683 #define IRST 0x02 /* sta: scsi reset signal */
684 #define SDP 0x01 /* sta: scsi parity signal */
685
686 /*0e*/ u8 nc_sstat1;
687 #define FF3210 0xf0 /* sta: bytes in the scsi fifo */
688
689 /*0f*/ u8 nc_sstat2;
690 #define ILF1 0x80 /* sta: data in SIDL register msb[W]*/
691 #define ORF1 0x40 /* sta: data in SODR register msb[W]*/
692 #define OLF1 0x20 /* sta: data in SODL register msb[W]*/
693 #define DM 0x04 /* sta: DIFFSENS mismatch (895/6 only) */
694 #define LDSC 0x02 /* sta: disconnect & reconnect */
695
696 /*10*/ u8 nc_dsa; /* --> Base page */
697 /*11*/ u8 nc_dsa1;
698 /*12*/ u8 nc_dsa2;
699 /*13*/ u8 nc_dsa3;
700
701 /*14*/ u8 nc_istat; /* --> Main Command and status */
702 #define CABRT 0x80 /* cmd: abort current operation */
703 #define SRST 0x40 /* mod: reset chip */
704 #define SIGP 0x20 /* r/w: message from host to ncr */
705 #define SEM 0x10 /* r/w: message between host + ncr */
706 #define CON 0x08 /* sta: connected to scsi */
707 #define INTF 0x04 /* sta: int on the fly (reset by wr)*/
708 #define SIP 0x02 /* sta: scsi-interrupt */
709 #define DIP 0x01 /* sta: host/script interrupt */
710
711 /*15*/ u8 nc_istat1; /* 896 and later cores only */
712 #define FLSH 0x04 /* sta: chip is flushing */
713 #define SRUN 0x02 /* sta: scripts are running */
714 #define SIRQD 0x01 /* r/w: disable INT pin */
715
716 /*16*/ u8 nc_mbox0; /* 896 and later cores only */
717 /*17*/ u8 nc_mbox1; /* 896 and later cores only */
718
719 /*18*/ u8 nc_ctest0;
720 #define EHP 0x04 /* 720 even host parity */
721 /*19*/ u8 nc_ctest1;
722
723 /*1a*/ u8 nc_ctest2;
724 #define CSIGP 0x40
725 /* bits 0-2,7 rsvd for C1010 */
726
727 /*1b*/ u8 nc_ctest3;
728 #define FLF 0x08 /* cmd: flush dma fifo */
729 #define CLF 0x04 /* cmd: clear dma fifo */
730 #define FM 0x02 /* mod: fetch pin mode */
731 #define WRIE 0x01 /* mod: write and invalidate enable */
732 /* bits 4-7 rsvd for C1010 */
733
734 /*1c*/ u32 nc_temp; /* ### Temporary stack */
735
736 /*20*/ u8 nc_dfifo;
737 /*21*/ u8 nc_ctest4;
738 #define MUX 0x80 /* 720 host bus multiplex mode */
739 #define BDIS 0x80 /* mod: burst disable */
740 #define MPEE 0x08 /* mod: master parity error enable */
741
742 /*22*/ u8 nc_ctest5;
743 #define DFS 0x20 /* mod: dma fifo size */
744 /* bits 0-1, 3-7 rsvd for C1010 */
745 /*23*/ u8 nc_ctest6;
746
747 /*24*/ u32 nc_dbc; /* ### Byte count and command */
748 /*28*/ u32 nc_dnad; /* ### Next command register */
749 /*2c*/ u32 nc_dsp; /* --> Script Pointer */
750 /*30*/ u32 nc_dsps; /* --> Script pointer save/opcode#2 */
751
752 /*34*/ u8 nc_scratcha; /* Temporary register a */
753 /*35*/ u8 nc_scratcha1;
754 /*36*/ u8 nc_scratcha2;
755 /*37*/ u8 nc_scratcha3;
756
757 /*38*/ u8 nc_dmode;
758 #define BL_2 0x80 /* mod: burst length shift value +2 */
759 #define BL_1 0x40 /* mod: burst length shift value +1 */
760 #define ERL 0x08 /* mod: enable read line */
761 #define ERMP 0x04 /* mod: enable read multiple */
762 #define BOF 0x02 /* mod: burst op code fetch */
763
764 /*39*/ u8 nc_dien;
765 /*3a*/ u8 nc_sbr;
766
767 /*3b*/ u8 nc_dcntl; /* --> Script execution control */
768 #define CLSE 0x80 /* mod: cache line size enable */
769 #define PFF 0x40 /* cmd: pre-fetch flush */
770 #define PFEN 0x20 /* mod: pre-fetch enable */
771 #define EA 0x20 /* mod: 720 enable-ack */
772 #define SSM 0x10 /* mod: single step mode */
773 #define IRQM 0x08 /* mod: irq mode (1 = totem pole !) */
774 #define STD 0x04 /* cmd: start dma mode */
775 #define IRQD 0x02 /* mod: irq disable */
776 #define NOCOM 0x01 /* cmd: protect sfbr while reselect */
777 /* bits 0-1 rsvd for C1010 */
778
779 /*3c*/ u32 nc_adder;
780
781 /*40*/ u16 nc_sien; /* -->: interrupt enable */
782 /*42*/ u16 nc_sist; /* <--: interrupt status */
783 #define SBMC 0x1000/* sta: SCSI Bus Mode Change (895/6 only) */
784 #define STO 0x0400/* sta: timeout (select) */
785 #define GEN 0x0200/* sta: timeout (general) */
786 #define HTH 0x0100/* sta: timeout (handshake) */
787 #define MA 0x80 /* sta: phase mismatch */
788 #define CMP 0x40 /* sta: arbitration complete */
789 #define SEL 0x20 /* sta: selected by another device */
790 #define RSL 0x10 /* sta: reselected by another device*/
791 #define SGE 0x08 /* sta: gross error (over/underflow)*/
792 #define UDC 0x04 /* sta: unexpected disconnect */
793 #define RST 0x02 /* sta: scsi bus reset detected */
794 #define PAR 0x01 /* sta: scsi parity error */
795
796 /*44*/ u8 nc_slpar;
797 /*45*/ u8 nc_swide;
798 /*46*/ u8 nc_macntl;
799 /*47*/ u8 nc_gpcntl;
800 /*48*/ u8 nc_stime0; /* cmd: timeout for select&handshake*/
801 /*49*/ u8 nc_stime1; /* cmd: timeout user defined */
802 /*4a*/ u16 nc_respid; /* sta: Reselect-IDs */
803
804 /*4c*/ u8 nc_stest0;
805
806 /*4d*/ u8 nc_stest1;
807 #define SCLK 0x80 /* Use the PCI clock as SCSI clock */
808 #define DBLEN 0x08 /* clock doubler running */
809 #define DBLSEL 0x04 /* clock doubler selected */
810
811
812 /*4e*/ u8 nc_stest2;
813 #define ROF 0x40 /* reset scsi offset (after gross error!) */
814 #define DIF 0x20 /* 720 SCSI differential mode */
815 #define EXT 0x02 /* extended filtering */
816
817 /*4f*/ u8 nc_stest3;
818 #define TE 0x80 /* c: tolerAnt enable */
819 #define HSC 0x20 /* c: Halt SCSI Clock */
820 #define CSF 0x02 /* c: clear scsi fifo */
821
822 /*50*/ u16 nc_sidl; /* Lowlevel: latched from scsi data */
823 /*52*/ u8 nc_stest4;
824 #define SMODE 0xc0 /* SCSI bus mode (895/6 only) */
825 #define SMODE_HVD 0x40 /* High Voltage Differential */
826 #define SMODE_SE 0x80 /* Single Ended */
827 #define SMODE_LVD 0xc0 /* Low Voltage Differential */
828 #define LCKFRQ 0x20 /* Frequency Lock (895/6 only) */
829 /* bits 0-5 rsvd for C1010 */
830
831 /*53*/ u8 nc_53_;
832 /*54*/ u16 nc_sodl; /* Lowlevel: data out to scsi data */
833 /*56*/ u8 nc_ccntl0; /* Chip Control 0 (896) */
834 #define ENPMJ 0x80 /* Enable Phase Mismatch Jump */
835 #define PMJCTL 0x40 /* Phase Mismatch Jump Control */
836 #define ENNDJ 0x20 /* Enable Non Data PM Jump */
837 #define DISFC 0x10 /* Disable Auto FIFO Clear */
838 #define DILS 0x02 /* Disable Internal Load/Store */
839 #define DPR 0x01 /* Disable Pipe Req */
840
841 /*57*/ u8 nc_ccntl1; /* Chip Control 1 (896) */
842 #define ZMOD 0x80 /* High Impedance Mode */
843 #define DIC 0x10 /* Disable Internal Cycles */
844 #define DDAC 0x08 /* Disable Dual Address Cycle */
845 #define XTIMOD 0x04 /* 64-bit Table Ind. Indexing Mode */
846 #define EXTIBMV 0x02 /* Enable 64-bit Table Ind. BMOV */
847 #define EXDBMV 0x01 /* Enable 64-bit Direct BMOV */
848
849 /*58*/ u16 nc_sbdl; /* Lowlevel: data from scsi data */
850 /*5a*/ u16 nc_5a_;
851
852 /*5c*/ u8 nc_scr0; /* Working register B */
853 /*5d*/ u8 nc_scr1; /* */
854 /*5e*/ u8 nc_scr2; /* */
855 /*5f*/ u8 nc_scr3; /* */
856
857 /*60*/ u8 nc_scrx[64]; /* Working register C-R */
858 /*a0*/ u32 nc_mmrs; /* Memory Move Read Selector */
859 /*a4*/ u32 nc_mmws; /* Memory Move Write Selector */
860 /*a8*/ u32 nc_sfs; /* Script Fetch Selector */
861 /*ac*/ u32 nc_drs; /* DSA Relative Selector */
862 /*b0*/ u32 nc_sbms; /* Static Block Move Selector */
863 /*b4*/ u32 nc_dbms; /* Dynamic Block Move Selector */
864 /*b8*/ u32 nc_dnad64; /* DMA Next Address 64 */
865 /*bc*/ u16 nc_scntl4; /* C1010 only */
866 #define U3EN 0x80 /* Enable Ultra 3 */
867 #define AIPEN 0x40 /* Allow check upper byte lanes */
868 #define XCLKH_DT 0x08 /* Extra clock of data hold on DT
869 transfer edge */
870 #define XCLKH_ST 0x04 /* Extra clock of data hold on ST
871 transfer edge */
872
873 /*be*/ u8 nc_aipcntl0; /* Epat Control 1 C1010 only */
874 /*bf*/ u8 nc_aipcntl1; /* AIP Control C1010_66 Only */
875
876 /*c0*/ u32 nc_pmjad1; /* Phase Mismatch Jump Address 1 */
877 /*c4*/ u32 nc_pmjad2; /* Phase Mismatch Jump Address 2 */
878 /*c8*/ u8 nc_rbc; /* Remaining Byte Count */
879 /*c9*/ u8 nc_rbc1; /* */
880 /*ca*/ u8 nc_rbc2; /* */
881 /*cb*/ u8 nc_rbc3; /* */
882
883 /*cc*/ u8 nc_ua; /* Updated Address */
884 /*cd*/ u8 nc_ua1; /* */
885 /*ce*/ u8 nc_ua2; /* */
886 /*cf*/ u8 nc_ua3; /* */
887 /*d0*/ u32 nc_esa; /* Entry Storage Address */
888 /*d4*/ u8 nc_ia; /* Instruction Address */
889 /*d5*/ u8 nc_ia1;
890 /*d6*/ u8 nc_ia2;
891 /*d7*/ u8 nc_ia3;
892 /*d8*/ u32 nc_sbc; /* SCSI Byte Count (3 bytes only) */
893 /*dc*/ u32 nc_csbc; /* Cumulative SCSI Byte Count */
894
895 /* Following for C1010 only */
896 /*e0*/ u16 nc_crcpad; /* CRC Value */
897 /*e2*/ u8 nc_crccntl0; /* CRC control register */
898 #define SNDCRC 0x10 /* Send CRC Request */
899 /*e3*/ u8 nc_crccntl1; /* CRC control register */
900 /*e4*/ u32 nc_crcdata; /* CRC data register */
901 /*e8*/ u32 nc_e8_; /* rsvd */
902 /*ec*/ u32 nc_ec_; /* rsvd */
903 /*f0*/ u16 nc_dfbc; /* DMA FIFO byte count */
904
905 };
906
907 /*-----------------------------------------------------------
908 **
909 ** Utility macros for the script.
910 **
911 **-----------------------------------------------------------
912 */
913
914 #define REGJ(p,r) (offsetof(struct ncr_reg, p ## r))
915 #define REG(r) REGJ (nc_, r)
916
917 typedef u32 ncrcmd;
918
919 /*-----------------------------------------------------------
920 **
921 ** SCSI phases
922 **
923 ** DT phases illegal for ncr driver.
924 **
925 **-----------------------------------------------------------
926 */
927
928 #define SCR_DATA_OUT 0x00000000
929 #define SCR_DATA_IN 0x01000000
930 #define SCR_COMMAND 0x02000000
931 #define SCR_STATUS 0x03000000
932 #define SCR_DT_DATA_OUT 0x04000000
933 #define SCR_DT_DATA_IN 0x05000000
934 #define SCR_MSG_OUT 0x06000000
935 #define SCR_MSG_IN 0x07000000
936
937 #define SCR_ILG_OUT 0x04000000
938 #define SCR_ILG_IN 0x05000000
939
940 /*-----------------------------------------------------------
941 **
942 ** Data transfer via SCSI.
943 **
944 **-----------------------------------------------------------
945 **
946 ** MOVE_ABS (LEN)
947 ** <<start address>>
948 **
949 ** MOVE_IND (LEN)
950 ** <<dnad_offset>>
951 **
952 ** MOVE_TBL
953 ** <<dnad_offset>>
954 **
955 **-----------------------------------------------------------
956 */
957
958 #define OPC_MOVE 0x08000000
959
960 #define SCR_MOVE_ABS(l) ((0x00000000 | OPC_MOVE) | (l))
961 #define SCR_MOVE_IND(l) ((0x20000000 | OPC_MOVE) | (l))
962 #define SCR_MOVE_TBL (0x10000000 | OPC_MOVE)
963
964 #define SCR_CHMOV_ABS(l) ((0x00000000) | (l))
965 #define SCR_CHMOV_IND(l) ((0x20000000) | (l))
966 #define SCR_CHMOV_TBL (0x10000000)
967
968 struct scr_tblmove {
969 u32 size;
970 u32 addr;
971 };
972
973 /*-----------------------------------------------------------
974 **
975 ** Selection
976 **
977 **-----------------------------------------------------------
978 **
979 ** SEL_ABS | SCR_ID (0..15) [ | REL_JMP]
980 ** <<alternate_address>>
981 **
982 ** SEL_TBL | << dnad_offset>> [ | REL_JMP]
983 ** <<alternate_address>>
984 **
985 **-----------------------------------------------------------
986 */
987
988 #define SCR_SEL_ABS 0x40000000
989 #define SCR_SEL_ABS_ATN 0x41000000
990 #define SCR_SEL_TBL 0x42000000
991 #define SCR_SEL_TBL_ATN 0x43000000
992
993
994 #ifdef SCSI_NCR_BIG_ENDIAN
995 struct scr_tblsel {
996 u8 sel_scntl3;
997 u8 sel_id;
998 u8 sel_sxfer;
999 u8 sel_scntl4;
1000 };
1001 #else
1002 struct scr_tblsel {
1003 u8 sel_scntl4;
1004 u8 sel_sxfer;
1005 u8 sel_id;
1006 u8 sel_scntl3;
1007 };
1008 #endif
1009
1010 #define SCR_JMP_REL 0x04000000
1011 #define SCR_ID(id) (((u32)(id)) << 16)
1012
1013 /*-----------------------------------------------------------
1014 **
1015 ** Waiting for Disconnect or Reselect
1016 **
1017 **-----------------------------------------------------------
1018 **
1019 ** WAIT_DISC
1020 ** dummy: <<alternate_address>>
1021 **
1022 ** WAIT_RESEL
1023 ** <<alternate_address>>
1024 **
1025 **-----------------------------------------------------------
1026 */
1027
1028 #define SCR_WAIT_DISC 0x48000000
1029 #define SCR_WAIT_RESEL 0x50000000
1030
1031 /*-----------------------------------------------------------
1032 **
1033 ** Bit Set / Reset
1034 **
1035 **-----------------------------------------------------------
1036 **
1037 ** SET (flags {|.. })
1038 **
1039 ** CLR (flags {|.. })
1040 **
1041 **-----------------------------------------------------------
1042 */
1043
1044 #define SCR_SET(f) (0x58000000 | (f))
1045 #define SCR_CLR(f) (0x60000000 | (f))
1046
1047 #define SCR_CARRY 0x00000400
1048 #define SCR_TRG 0x00000200
1049 #define SCR_ACK 0x00000040
1050 #define SCR_ATN 0x00000008
1051
1052
1053
1054
1055 /*-----------------------------------------------------------
1056 **
1057 ** Memory to memory move
1058 **
1059 **-----------------------------------------------------------
1060 **
1061 ** COPY (bytecount)
1062 ** << source_address >>
1063 ** << destination_address >>
1064 **
1065 ** SCR_COPY sets the NO FLUSH option by default.
1066 ** SCR_COPY_F does not set this option.
1067 **
1068 ** For chips which do not support this option,
1069 ** ncr_copy_and_bind() will remove this bit.
1070 **-----------------------------------------------------------
1071 */
1072
1073 #define SCR_NO_FLUSH 0x01000000
1074
1075 #define SCR_COPY(n) (0xc0000000 | SCR_NO_FLUSH | (n))
1076 #define SCR_COPY_F(n) (0xc0000000 | (n))
1077
1078 /*-----------------------------------------------------------
1079 **
1080 ** Register move and binary operations
1081 **
1082 **-----------------------------------------------------------
1083 **
1084 ** SFBR_REG (reg, op, data) reg = SFBR op data
1085 ** << 0 >>
1086 **
1087 ** REG_SFBR (reg, op, data) SFBR = reg op data
1088 ** << 0 >>
1089 **
1090 ** REG_REG (reg, op, data) reg = reg op data
1091 ** << 0 >>
1092 **
1093 **-----------------------------------------------------------
1094 ** On 810A, 860, 825A, 875, 895 and 896 chips the content
1095 ** of SFBR register can be used as data (SCR_SFBR_DATA).
1096 ** The 896 has additional IO registers starting at
1097 ** offset 0x80. Bit 7 of register offset is stored in
1098 ** bit 7 of the SCRIPTS instruction first DWORD.
1099 **-----------------------------------------------------------
1100 */
1101
1102 #define SCR_REG_OFS(ofs) ((((ofs) & 0x7f) << 16ul) + ((ofs) & 0x80))
1103
1104 #define SCR_SFBR_REG(reg,op,data) \
1105 (0x68000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul))
1106
1107 #define SCR_REG_SFBR(reg,op,data) \
1108 (0x70000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul))
1109
1110 #define SCR_REG_REG(reg,op,data) \
1111 (0x78000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul))
1112
1113
1114 #define SCR_LOAD 0x00000000
1115 #define SCR_SHL 0x01000000
1116 #define SCR_OR 0x02000000
1117 #define SCR_XOR 0x03000000
1118 #define SCR_AND 0x04000000
1119 #define SCR_SHR 0x05000000
1120 #define SCR_ADD 0x06000000
1121 #define SCR_ADDC 0x07000000
1122
1123 #define SCR_SFBR_DATA (0x00800000>>8ul) /* Use SFBR as data */
1124
1125 /*-----------------------------------------------------------
1126 **
1127 ** FROM_REG (reg) SFBR = reg
1128 ** << 0 >>
1129 **
1130 ** TO_REG (reg) reg = SFBR
1131 ** << 0 >>
1132 **
1133 ** LOAD_REG (reg, data) reg = <data>
1134 ** << 0 >>
1135 **
1136 ** LOAD_SFBR(data) SFBR = <data>
1137 ** << 0 >>
1138 **
1139 **-----------------------------------------------------------
1140 */
1141
1142 #define SCR_FROM_REG(reg) \
1143 SCR_REG_SFBR(reg,SCR_OR,0)
1144
1145 #define SCR_TO_REG(reg) \
1146 SCR_SFBR_REG(reg,SCR_OR,0)
1147
1148 #define SCR_LOAD_REG(reg,data) \
1149 SCR_REG_REG(reg,SCR_LOAD,data)
1150
1151 #define SCR_LOAD_SFBR(data) \
1152 (SCR_REG_SFBR (gpreg, SCR_LOAD, data))
1153
1154 /*-----------------------------------------------------------
1155 **
1156 ** LOAD from memory to register.
1157 ** STORE from register to memory.
1158 **
1159 ** Only supported by 810A, 860, 825A, 875, 895 and 896.
1160 **
1161 **-----------------------------------------------------------
1162 **
1163 ** LOAD_ABS (LEN)
1164 ** <<start address>>
1165 **
1166 ** LOAD_REL (LEN) (DSA relative)
1167 ** <<dsa_offset>>
1168 **
1169 **-----------------------------------------------------------
1170 */
1171
1172 #define SCR_REG_OFS2(ofs) (((ofs) & 0xff) << 16ul)
1173 #define SCR_NO_FLUSH2 0x02000000
1174 #define SCR_DSA_REL2 0x10000000
1175
1176 #define SCR_LOAD_R(reg, how, n) \
1177 (0xe1000000 | how | (SCR_REG_OFS2(REG(reg))) | (n))
1178
1179 #define SCR_STORE_R(reg, how, n) \
1180 (0xe0000000 | how | (SCR_REG_OFS2(REG(reg))) | (n))
1181
1182 #define SCR_LOAD_ABS(reg, n) SCR_LOAD_R(reg, SCR_NO_FLUSH2, n)
1183 #define SCR_LOAD_REL(reg, n) SCR_LOAD_R(reg, SCR_NO_FLUSH2|SCR_DSA_REL2, n)
1184 #define SCR_LOAD_ABS_F(reg, n) SCR_LOAD_R(reg, 0, n)
1185 #define SCR_LOAD_REL_F(reg, n) SCR_LOAD_R(reg, SCR_DSA_REL2, n)
1186
1187 #define SCR_STORE_ABS(reg, n) SCR_STORE_R(reg, SCR_NO_FLUSH2, n)
1188 #define SCR_STORE_REL(reg, n) SCR_STORE_R(reg, SCR_NO_FLUSH2|SCR_DSA_REL2,n)
1189 #define SCR_STORE_ABS_F(reg, n) SCR_STORE_R(reg, 0, n)
1190 #define SCR_STORE_REL_F(reg, n) SCR_STORE_R(reg, SCR_DSA_REL2, n)
1191
1192
1193 /*-----------------------------------------------------------
1194 **
1195 ** Waiting for Disconnect or Reselect
1196 **
1197 **-----------------------------------------------------------
1198 **
1199 ** JUMP [ | IFTRUE/IFFALSE ( ... ) ]
1200 ** <<address>>
1201 **
1202 ** JUMPR [ | IFTRUE/IFFALSE ( ... ) ]
1203 ** <<distance>>
1204 **
1205 ** CALL [ | IFTRUE/IFFALSE ( ... ) ]
1206 ** <<address>>
1207 **
1208 ** CALLR [ | IFTRUE/IFFALSE ( ... ) ]
1209 ** <<distance>>
1210 **
1211 ** RETURN [ | IFTRUE/IFFALSE ( ... ) ]
1212 ** <<dummy>>
1213 **
1214 ** INT [ | IFTRUE/IFFALSE ( ... ) ]
1215 ** <<ident>>
1216 **
1217 ** INT_FLY [ | IFTRUE/IFFALSE ( ... ) ]
1218 ** <<ident>>
1219 **
1220 ** Conditions:
1221 ** WHEN (phase)
1222 ** IF (phase)
1223 ** CARRYSET
1224 ** DATA (data, mask)
1225 **
1226 **-----------------------------------------------------------
1227 */
1228
1229 #define SCR_NO_OP 0x80000000
1230 #define SCR_JUMP 0x80080000
1231 #define SCR_JUMP64 0x80480000
1232 #define SCR_JUMPR 0x80880000
1233 #define SCR_CALL 0x88080000
1234 #define SCR_CALLR 0x88880000
1235 #define SCR_RETURN 0x90080000
1236 #define SCR_INT 0x98080000
1237 #define SCR_INT_FLY 0x98180000
1238
1239 #define IFFALSE(arg) (0x00080000 | (arg))
1240 #define IFTRUE(arg) (0x00000000 | (arg))
1241
1242 #define WHEN(phase) (0x00030000 | (phase))
1243 #define IF(phase) (0x00020000 | (phase))
1244
1245 #define DATA(D) (0x00040000 | ((D) & 0xff))
1246 #define MASK(D,M) (0x00040000 | (((M ^ 0xff) & 0xff) << 8ul)|((D) & 0xff))
1247
1248 #define CARRYSET (0x00200000)
1249
1250 /*-----------------------------------------------------------
1251 **
1252 ** SCSI constants.
1253 **
1254 **-----------------------------------------------------------
1255 */
1256
1257 /*
1258 ** Status
1259 */
1260
1261 #define S_GOOD (0x00)
1262 #define S_CHECK_COND (0x02)
1263 #define S_COND_MET (0x04)
1264 #define S_BUSY (0x08)
1265 #define S_INT (0x10)
1266 #define S_INT_COND_MET (0x14)
1267 #define S_CONFLICT (0x18)
1268 #define S_TERMINATED (0x20)
1269 #define S_QUEUE_FULL (0x28)
1270 #define S_ILLEGAL (0xff)
1271 #define S_SENSE (0x80)
1272
1273 /*
1274 * End of ncrreg from FreeBSD
1275 */
1276
1277 /*
1278 Build a scatter/gather entry.
1279 see sym53c8xx_2/sym_hipd.h for more detailed sym_build_sge()
1280 implementation ;)
1281 */
1282
1283 #define ncr_build_sge(np, data, badd, len) \
1284 do { \
1285 (data)->addr = cpu_to_scr(badd); \
1286 (data)->size = cpu_to_scr(len); \
1287 } while (0)
1288
1289 /*==========================================================
1290 **
1291 ** Structures used by the detection routine to transmit
1292 ** device configuration to the attach function.
1293 **
1294 **==========================================================
1295 */
1296 struct ncr_slot {
1297 u_long base;
1298 u_long base_2;
1299 u_long base_c;
1300 u_long base_2_c;
1301 void __iomem *base_v;
1302 void __iomem *base_2_v;
1303 int irq;
1304 /* port and reg fields to use INB, OUTB macros */
1305 volatile struct ncr_reg __iomem *reg;
1306 };
1307
1308 /*==========================================================
1309 **
1310 ** Structure used by detection routine to save data on
1311 ** each detected board for attach.
1312 **
1313 **==========================================================
1314 */
1315 struct ncr_device {
1316 struct device *dev;
1317 struct ncr_slot slot;
1318 struct ncr_chip chip;
1319 u_char host_id;
1320 u8 differential;
1321 };
1322
1323 extern struct Scsi_Host *ncr_attach(struct scsi_host_template *tpnt, int unit, struct ncr_device *device);
1324 extern void ncr53c8xx_release(struct Scsi_Host *host);
1325 irqreturn_t ncr53c8xx_intr(int irq, void *dev_id);
1326 extern int ncr53c8xx_init(void);
1327 extern void ncr53c8xx_exit(void);
1328
1329 #endif /* NCR53C8XX_H */
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