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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/******************************************************************************
3** Device driver for the PCI-SCSI NCR538XX controller family.
4**
5** Copyright (C) 1994 Wolfgang Stanglmeier
6** Copyright (C) 1998-2001 Gerard Roudier <[email protected]>
7**
8**
9**-----------------------------------------------------------------------------
10**
11** This driver has been ported to Linux from the FreeBSD NCR53C8XX driver
12** and is currently maintained by
13**
14** Gerard Roudier <[email protected]>
15**
16** Being given that this driver originates from the FreeBSD version, and
17** in order to keep synergy on both, any suggested enhancements and corrections
18** received on Linux are automatically a potential candidate for the FreeBSD
19** version.
20**
21** The original driver has been written for 386bsd and FreeBSD by
22** Wolfgang Stanglmeier <[email protected]>
23** Stefan Esser <[email protected]>
24**
25** And has been ported to NetBSD by
26** Charles M. Hannum <[email protected]>
27**
28** NVRAM detection and reading.
29** Copyright (C) 1997 Richard Waltham <[email protected]>
30**
31** Added support for MIPS big endian systems.
32** Carsten Langgaard, [email protected]
33** Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
34**
35** Added support for HP PARISC big endian systems.
36** Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
37**
38*******************************************************************************
39*/
40
41#ifndef NCR53C8XX_H
42#define NCR53C8XX_H
43
44#include <scsi/scsi_host.h>
45
46
47/*
48** If you want a driver as small as possible, donnot define the
49** following options.
50*/
51#define SCSI_NCR_BOOT_COMMAND_LINE_SUPPORT
52#define SCSI_NCR_DEBUG_INFO_SUPPORT
53
54/*
55** To disable integrity checking, do not define the
56** following option.
57*/
58#ifdef CONFIG_SCSI_NCR53C8XX_INTEGRITY_CHECK
59# define SCSI_NCR_ENABLE_INTEGRITY_CHECK
60#endif
61
62/* ---------------------------------------------------------------------
63** Take into account kernel configured parameters.
64** Most of these options can be overridden at startup by a command line.
65** ---------------------------------------------------------------------
66*/
67
68/*
69 * For Ultra2 and Ultra3 SCSI support option, use special features.
70 *
71 * Value (default) means:
72 * bit 0 : all features enabled, except:
73 * bit 1 : PCI Write And Invalidate.
74 * bit 2 : Data Phase Mismatch handling from SCRIPTS.
75 *
76 * Use boot options ncr53c8xx=specf:1 if you want all chip features to be
77 * enabled by the driver.
78 */
79#define SCSI_NCR_SETUP_SPECIAL_FEATURES (3)
80
81#define SCSI_NCR_MAX_SYNC (80)
82
83/*
84 * Allow tags from 2 to 256, default 8
85 */
86#ifdef CONFIG_SCSI_NCR53C8XX_MAX_TAGS
87#if CONFIG_SCSI_NCR53C8XX_MAX_TAGS < 2
88#define SCSI_NCR_MAX_TAGS (2)
89#elif CONFIG_SCSI_NCR53C8XX_MAX_TAGS > 256
90#define SCSI_NCR_MAX_TAGS (256)
91#else
92#define SCSI_NCR_MAX_TAGS CONFIG_SCSI_NCR53C8XX_MAX_TAGS
93#endif
94#else
95#define SCSI_NCR_MAX_TAGS (8)
96#endif
97
98/*
99 * Allow tagged command queuing support if configured with default number
100 * of tags set to max (see above).
101 */
102#ifdef CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS
103#define SCSI_NCR_SETUP_DEFAULT_TAGS CONFIG_SCSI_NCR53C8XX_DEFAULT_TAGS
104#elif defined CONFIG_SCSI_NCR53C8XX_TAGGED_QUEUE
105#define SCSI_NCR_SETUP_DEFAULT_TAGS SCSI_NCR_MAX_TAGS
106#else
107#define SCSI_NCR_SETUP_DEFAULT_TAGS (0)
108#endif
109
110/*
111 * Immediate arbitration
112 */
113#if defined(CONFIG_SCSI_NCR53C8XX_IARB)
114#define SCSI_NCR_IARB_SUPPORT
115#endif
116
117/*
118 * Sync transfer frequency at startup.
119 * Allow from 5Mhz to 80Mhz default 20 Mhz.
120 */
121#ifndef CONFIG_SCSI_NCR53C8XX_SYNC
122#define CONFIG_SCSI_NCR53C8XX_SYNC (20)
123#elif CONFIG_SCSI_NCR53C8XX_SYNC > SCSI_NCR_MAX_SYNC
124#undef CONFIG_SCSI_NCR53C8XX_SYNC
125#define CONFIG_SCSI_NCR53C8XX_SYNC SCSI_NCR_MAX_SYNC
126#endif
127
128#if CONFIG_SCSI_NCR53C8XX_SYNC == 0
129#define SCSI_NCR_SETUP_DEFAULT_SYNC (255)
130#elif CONFIG_SCSI_NCR53C8XX_SYNC <= 5
131#define SCSI_NCR_SETUP_DEFAULT_SYNC (50)
132#elif CONFIG_SCSI_NCR53C8XX_SYNC <= 20
133#define SCSI_NCR_SETUP_DEFAULT_SYNC (250/(CONFIG_SCSI_NCR53C8XX_SYNC))
134#elif CONFIG_SCSI_NCR53C8XX_SYNC <= 33
135#define SCSI_NCR_SETUP_DEFAULT_SYNC (11)
136#elif CONFIG_SCSI_NCR53C8XX_SYNC <= 40
137#define SCSI_NCR_SETUP_DEFAULT_SYNC (10)
138#else
139#define SCSI_NCR_SETUP_DEFAULT_SYNC (9)
140#endif
141
142/*
143 * Disallow disconnections at boot-up
144 */
145#ifdef CONFIG_SCSI_NCR53C8XX_NO_DISCONNECT
146#define SCSI_NCR_SETUP_DISCONNECTION (0)
147#else
148#define SCSI_NCR_SETUP_DISCONNECTION (1)
149#endif
150
151/*
152 * Force synchronous negotiation for all targets
153 */
154#ifdef CONFIG_SCSI_NCR53C8XX_FORCE_SYNC_NEGO
155#define SCSI_NCR_SETUP_FORCE_SYNC_NEGO (1)
156#else
157#define SCSI_NCR_SETUP_FORCE_SYNC_NEGO (0)
158#endif
159
160/*
161 * Disable master parity checking (flawed hardwares need that)
162 */
163#ifdef CONFIG_SCSI_NCR53C8XX_DISABLE_MPARITY_CHECK
164#define SCSI_NCR_SETUP_MASTER_PARITY (0)
165#else
166#define SCSI_NCR_SETUP_MASTER_PARITY (1)
167#endif
168
169/*
170 * Disable scsi parity checking (flawed devices may need that)
171 */
172#ifdef CONFIG_SCSI_NCR53C8XX_DISABLE_PARITY_CHECK
173#define SCSI_NCR_SETUP_SCSI_PARITY (0)
174#else
175#define SCSI_NCR_SETUP_SCSI_PARITY (1)
176#endif
177
178/*
179 * Settle time after reset at boot-up
180 */
181#define SCSI_NCR_SETUP_SETTLE_TIME (2)
182
183/*
184** Bridge quirks work-around option defaulted to 1.
185*/
186#ifndef SCSI_NCR_PCIQ_WORK_AROUND_OPT
187#define SCSI_NCR_PCIQ_WORK_AROUND_OPT 1
188#endif
189
190/*
191** Work-around common bridge misbehaviour.
192**
193** - Do not flush posted writes in the opposite
194** direction on read.
195** - May reorder DMA writes to memory.
196**
197** This option should not affect performances
198** significantly, so it is the default.
199*/
200#if SCSI_NCR_PCIQ_WORK_AROUND_OPT == 1
201#define SCSI_NCR_PCIQ_MAY_NOT_FLUSH_PW_UPSTREAM
202#define SCSI_NCR_PCIQ_MAY_REORDER_WRITES
203#define SCSI_NCR_PCIQ_MAY_MISS_COMPLETIONS
204
205/*
206** Same as option 1, but also deal with
207** misconfigured interrupts.
208**
209** - Edge triggered instead of level sensitive.
210** - No interrupt line connected.
211** - IRQ number misconfigured.
212**
213** If no interrupt is delivered, the driver will
214** catch the interrupt conditions 10 times per
215** second. No need to say that this option is
216** not recommended.
217*/
218#elif SCSI_NCR_PCIQ_WORK_AROUND_OPT == 2
219#define SCSI_NCR_PCIQ_MAY_NOT_FLUSH_PW_UPSTREAM
220#define SCSI_NCR_PCIQ_MAY_REORDER_WRITES
221#define SCSI_NCR_PCIQ_MAY_MISS_COMPLETIONS
222#define SCSI_NCR_PCIQ_BROKEN_INTR
223
224/*
225** Some bridge designers decided to flush
226** everything prior to deliver the interrupt.
227** This option tries to deal with such a
228** behaviour.
229*/
230#elif SCSI_NCR_PCIQ_WORK_AROUND_OPT == 3
231#define SCSI_NCR_PCIQ_SYNC_ON_INTR
232#endif
233
234/*
235** Other parameters not configurable with "make config"
236** Avoid to change these constants, unless you know what you are doing.
237*/
238
239#define SCSI_NCR_ALWAYS_SIMPLE_TAG
240#define SCSI_NCR_MAX_SCATTER (127)
241#define SCSI_NCR_MAX_TARGET (16)
242
243/*
244** Compute some desirable value for CAN_QUEUE
245** and CMD_PER_LUN.
246** The driver will use lower values if these
247** ones appear to be too large.
248*/
249#define SCSI_NCR_CAN_QUEUE (8*SCSI_NCR_MAX_TAGS + 2*SCSI_NCR_MAX_TARGET)
250#define SCSI_NCR_CMD_PER_LUN (SCSI_NCR_MAX_TAGS)
251
252#define SCSI_NCR_SG_TABLESIZE (SCSI_NCR_MAX_SCATTER)
253#define SCSI_NCR_TIMER_INTERVAL (HZ)
254
255#define SCSI_NCR_MAX_LUN (16)
256
257/*
258 * IO functions definition for big/little endian CPU support.
259 * For now, the NCR is only supported in little endian addressing mode,
260 */
261
262#ifdef __BIG_ENDIAN
263
264#define inw_l2b inw
265#define inl_l2b inl
266#define outw_b2l outw
267#define outl_b2l outl
268
269#define readb_raw readb
270#define writeb_raw writeb
271
272#if defined(SCSI_NCR_BIG_ENDIAN)
273#define readw_l2b __raw_readw
274#define readl_l2b __raw_readl
275#define writew_b2l __raw_writew
276#define writel_b2l __raw_writel
277#define readw_raw __raw_readw
278#define readl_raw __raw_readl
279#define writew_raw __raw_writew
280#define writel_raw __raw_writel
281#else /* Other big-endian */
282#define readw_l2b readw
283#define readl_l2b readl
284#define writew_b2l writew
285#define writel_b2l writel
286#define readw_raw readw
287#define readl_raw readl
288#define writew_raw writew
289#define writel_raw writel
290#endif
291
292#else /* little endian */
293
294#define inw_raw inw
295#define inl_raw inl
296#define outw_raw outw
297#define outl_raw outl
298
299#define readb_raw readb
300#define readw_raw readw
301#define readl_raw readl
302#define writeb_raw writeb
303#define writew_raw writew
304#define writel_raw writel
305
306#endif
307
308#if !defined(__hppa__) && !defined(__mips__)
309#ifdef SCSI_NCR_BIG_ENDIAN
310#error "The NCR in BIG ENDIAN addressing mode is not (yet) supported"
311#endif
312#endif
313
314#define MEMORY_BARRIER() mb()
315
316
317/*
318 * If the NCR uses big endian addressing mode over the
319 * PCI, actual io register addresses for byte and word
320 * accesses must be changed according to lane routing.
321 * Btw, ncr_offb() and ncr_offw() macros only apply to
322 * constants and so donnot generate bloated code.
323 */
324
325#if defined(SCSI_NCR_BIG_ENDIAN)
326
327#define ncr_offb(o) (((o)&~3)+((~((o)&3))&3))
328#define ncr_offw(o) (((o)&~3)+((~((o)&3))&2))
329
330#else
331
332#define ncr_offb(o) (o)
333#define ncr_offw(o) (o)
334
335#endif
336
337/*
338 * If the CPU and the NCR use same endian-ness addressing,
339 * no byte reordering is needed for script patching.
340 * Macro cpu_to_scr() is to be used for script patching.
341 * Macro scr_to_cpu() is to be used for getting a DWORD
342 * from the script.
343 */
344
345#if defined(__BIG_ENDIAN) && !defined(SCSI_NCR_BIG_ENDIAN)
346
347#define cpu_to_scr(dw) cpu_to_le32(dw)
348#define scr_to_cpu(dw) le32_to_cpu(dw)
349
350#elif defined(__LITTLE_ENDIAN) && defined(SCSI_NCR_BIG_ENDIAN)
351
352#define cpu_to_scr(dw) cpu_to_be32(dw)
353#define scr_to_cpu(dw) be32_to_cpu(dw)
354
355#else
356
357#define cpu_to_scr(dw) (dw)
358#define scr_to_cpu(dw) (dw)
359
360#endif
361
362/*
363 * Access to the controller chip.
364 *
365 * If the CPU and the NCR use same endian-ness addressing,
366 * no byte reordering is needed for accessing chip io
367 * registers. Functions suffixed by '_raw' are assumed
368 * to access the chip over the PCI without doing byte
369 * reordering. Functions suffixed by '_l2b' are
370 * assumed to perform little-endian to big-endian byte
371 * reordering, those suffixed by '_b2l' blah, blah,
372 * blah, ...
373 */
374
375/*
376 * MEMORY mapped IO input / output
377 */
378
379#define INB_OFF(o) readb_raw((char __iomem *)np->reg + ncr_offb(o))
380#define OUTB_OFF(o, val) writeb_raw((val), (char __iomem *)np->reg + ncr_offb(o))
381
382#if defined(__BIG_ENDIAN) && !defined(SCSI_NCR_BIG_ENDIAN)
383
384#define INW_OFF(o) readw_l2b((char __iomem *)np->reg + ncr_offw(o))
385#define INL_OFF(o) readl_l2b((char __iomem *)np->reg + (o))
386
387#define OUTW_OFF(o, val) writew_b2l((val), (char __iomem *)np->reg + ncr_offw(o))
388#define OUTL_OFF(o, val) writel_b2l((val), (char __iomem *)np->reg + (o))
389
390#elif defined(__LITTLE_ENDIAN) && defined(SCSI_NCR_BIG_ENDIAN)
391
392#define INW_OFF(o) readw_b2l((char __iomem *)np->reg + ncr_offw(o))
393#define INL_OFF(o) readl_b2l((char __iomem *)np->reg + (o))
394
395#define OUTW_OFF(o, val) writew_l2b((val), (char __iomem *)np->reg + ncr_offw(o))
396#define OUTL_OFF(o, val) writel_l2b((val), (char __iomem *)np->reg + (o))
397
398#else
399
400#ifdef SCSI_NCR53C8XX_NO_WORD_TRANSFERS
401/* Only 8 or 32 bit transfers allowed */
402#define INW_OFF(o) (readb((char __iomem *)np->reg + ncr_offw(o)) << 8 | readb((char __iomem *)np->reg + ncr_offw(o) + 1))
403#else
404#define INW_OFF(o) readw_raw((char __iomem *)np->reg + ncr_offw(o))
405#endif
406#define INL_OFF(o) readl_raw((char __iomem *)np->reg + (o))
407
408#ifdef SCSI_NCR53C8XX_NO_WORD_TRANSFERS
409/* Only 8 or 32 bit transfers allowed */
410#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)
411#else
412#define OUTW_OFF(o, val) writew_raw((val), (char __iomem *)np->reg + ncr_offw(o))
413#endif
414#define OUTL_OFF(o, val) writel_raw((val), (char __iomem *)np->reg + (o))
415
416#endif
417
418#define INB(r) INB_OFF (offsetof(struct ncr_reg,r))
419#define INW(r) INW_OFF (offsetof(struct ncr_reg,r))
420#define INL(r) INL_OFF (offsetof(struct ncr_reg,r))
421
422#define OUTB(r, val) OUTB_OFF (offsetof(struct ncr_reg,r), (val))
423#define OUTW(r, val) OUTW_OFF (offsetof(struct ncr_reg,r), (val))
424#define OUTL(r, val) OUTL_OFF (offsetof(struct ncr_reg,r), (val))
425
426/*
427 * Set bit field ON, OFF
428 */
429
430#define OUTONB(r, m) OUTB(r, INB(r) | (m))
431#define OUTOFFB(r, m) OUTB(r, INB(r) & ~(m))
432#define OUTONW(r, m) OUTW(r, INW(r) | (m))
433#define OUTOFFW(r, m) OUTW(r, INW(r) & ~(m))
434#define OUTONL(r, m) OUTL(r, INL(r) | (m))
435#define OUTOFFL(r, m) OUTL(r, INL(r) & ~(m))
436
437/*
438 * We normally want the chip to have a consistent view
439 * of driver internal data structures when we restart it.
440 * Thus these macros.
441 */
442#define OUTL_DSP(v) \
443 do { \
444 MEMORY_BARRIER(); \
445 OUTL (nc_dsp, (v)); \
446 } while (0)
447
448#define OUTONB_STD() \
449 do { \
450 MEMORY_BARRIER(); \
451 OUTONB (nc_dcntl, (STD|NOCOM)); \
452 } while (0)
453
454
455/*
456** NCR53C8XX devices features table.
457*/
458struct ncr_chip {
459 unsigned short revision_id;
460 unsigned char burst_max; /* log-base-2 of max burst */
461 unsigned char offset_max;
462 unsigned char nr_divisor;
463 unsigned int features;
464#define FE_LED0 (1<<0)
465#define FE_WIDE (1<<1) /* Wide data transfers */
466#define FE_ULTRA (1<<2) /* Ultra speed 20Mtrans/sec */
467#define FE_DBLR (1<<4) /* Clock doubler present */
468#define FE_QUAD (1<<5) /* Clock quadrupler present */
469#define FE_ERL (1<<6) /* Enable read line */
470#define FE_CLSE (1<<7) /* Cache line size enable */
471#define FE_WRIE (1<<8) /* Write & Invalidate enable */
472#define FE_ERMP (1<<9) /* Enable read multiple */
473#define FE_BOF (1<<10) /* Burst opcode fetch */
474#define FE_DFS (1<<11) /* DMA fifo size */
475#define FE_PFEN (1<<12) /* Prefetch enable */
476#define FE_LDSTR (1<<13) /* Load/Store supported */
477#define FE_RAM (1<<14) /* On chip RAM present */
478#define FE_VARCLK (1<<15) /* SCSI clock may vary */
479#define FE_RAM8K (1<<16) /* On chip RAM sized 8Kb */
480#define FE_64BIT (1<<17) /* Have a 64-bit PCI interface */
481#define FE_IO256 (1<<18) /* Requires full 256 bytes in PCI space */
482#define FE_NOPM (1<<19) /* Scripts handles phase mismatch */
483#define FE_LEDC (1<<20) /* Hardware control of LED */
484#define FE_DIFF (1<<21) /* Support Differential SCSI */
485#define FE_66MHZ (1<<23) /* 66MHz PCI Support */
486#define FE_DAC (1<<24) /* Support DAC cycles (64 bit addressing) */
487#define FE_ISTAT1 (1<<25) /* Have ISTAT1, MBOX0, MBOX1 registers */
488#define FE_DAC_IN_USE (1<<26) /* Platform does DAC cycles */
489#define FE_EHP (1<<27) /* 720: Even host parity */
490#define FE_MUX (1<<28) /* 720: Multiplexed bus */
491#define FE_EA (1<<29) /* 720: Enable Ack */
492
493#define FE_CACHE_SET (FE_ERL|FE_CLSE|FE_WRIE|FE_ERMP)
494#define FE_SCSI_SET (FE_WIDE|FE_ULTRA|FE_DBLR|FE_QUAD|F_CLK80)
495#define FE_SPECIAL_SET (FE_CACHE_SET|FE_BOF|FE_DFS|FE_LDSTR|FE_PFEN|FE_RAM)
496};
497
498
499/*
500** Driver setup structure.
501**
502** This structure is initialized from linux config options.
503** It can be overridden at boot-up by the boot command line.
504*/
505#define SCSI_NCR_MAX_EXCLUDES 8
506struct ncr_driver_setup {
507 u8 master_parity;
508 u8 scsi_parity;
509 u8 disconnection;
510 u8 special_features;
511 u8 force_sync_nego;
512 u8 reverse_probe;
513 u8 pci_fix_up;
514 u8 use_nvram;
515 u8 verbose;
516 u8 default_tags;
517 u16 default_sync;
518 u16 debug;
519 u8 burst_max;
520 u8 led_pin;
521 u8 max_wide;
522 u8 settle_delay;
523 u8 diff_support;
524 u8 irqm;
525 u8 bus_check;
526 u8 optimize;
527 u8 recovery;
528 u8 host_id;
529 u16 iarb;
530 u32 excludes[SCSI_NCR_MAX_EXCLUDES];
531 char tag_ctrl[100];
532};
533
534/*
535** Initial setup.
536** Can be overridden at startup by a command line.
537*/
538#define SCSI_NCR_DRIVER_SETUP \
539{ \
540 SCSI_NCR_SETUP_MASTER_PARITY, \
541 SCSI_NCR_SETUP_SCSI_PARITY, \
542 SCSI_NCR_SETUP_DISCONNECTION, \
543 SCSI_NCR_SETUP_SPECIAL_FEATURES, \
544 SCSI_NCR_SETUP_FORCE_SYNC_NEGO, \
545 0, \
546 0, \
547 1, \
548 0, \
549 SCSI_NCR_SETUP_DEFAULT_TAGS, \
550 SCSI_NCR_SETUP_DEFAULT_SYNC, \
551 0x00, \
552 7, \
553 0, \
554 1, \
555 SCSI_NCR_SETUP_SETTLE_TIME, \
556 0, \
557 0, \
558 1, \
559 0, \
560 0, \
561 255, \
562 0x00 \
563}
564
565/*
566** Boot fail safe setup.
567** Override initial setup from boot command line:
568** ncr53c8xx=safe:y
569*/
570#define SCSI_NCR_DRIVER_SAFE_SETUP \
571{ \
572 0, \
573 1, \
574 0, \
575 0, \
576 0, \
577 0, \
578 0, \
579 1, \
580 2, \
581 0, \
582 255, \
583 0x00, \
584 255, \
585 0, \
586 0, \
587 10, \
588 1, \
589 1, \
590 1, \
591 0, \
592 0, \
593 255 \
594}
595
596/**************** ORIGINAL CONTENT of ncrreg.h from FreeBSD ******************/
597
598/*-----------------------------------------------------------------
599**
600** The ncr 53c810 register structure.
601**
602**-----------------------------------------------------------------
603*/
604
605struct ncr_reg {
606/*00*/ u8 nc_scntl0; /* full arb., ena parity, par->ATN */
607
608/*01*/ u8 nc_scntl1; /* no reset */
609 #define ISCON 0x10 /* connected to scsi */
610 #define CRST 0x08 /* force reset */
611 #define IARB 0x02 /* immediate arbitration */
612
613/*02*/ u8 nc_scntl2; /* no disconnect expected */
614 #define SDU 0x80 /* cmd: disconnect will raise error */
615 #define CHM 0x40 /* sta: chained mode */
616 #define WSS 0x08 /* sta: wide scsi send [W]*/
617 #define WSR 0x01 /* sta: wide scsi received [W]*/
618
619/*03*/ u8 nc_scntl3; /* cnf system clock dependent */
620 #define EWS 0x08 /* cmd: enable wide scsi [W]*/
621 #define ULTRA 0x80 /* cmd: ULTRA enable */
622 /* bits 0-2, 7 rsvd for C1010 */
623
624/*04*/ u8 nc_scid; /* cnf host adapter scsi address */
625 #define RRE 0x40 /* r/w:e enable response to resel. */
626 #define SRE 0x20 /* r/w:e enable response to select */
627
628/*05*/ u8 nc_sxfer; /* ### Sync speed and count */
629 /* bits 6-7 rsvd for C1010 */
630
631/*06*/ u8 nc_sdid; /* ### Destination-ID */
632
633/*07*/ u8 nc_gpreg; /* ??? IO-Pins */
634
635/*08*/ u8 nc_sfbr; /* ### First byte in phase */
636
637/*09*/ u8 nc_socl;
638 #define CREQ 0x80 /* r/w: SCSI-REQ */
639 #define CACK 0x40 /* r/w: SCSI-ACK */
640 #define CBSY 0x20 /* r/w: SCSI-BSY */
641 #define CSEL 0x10 /* r/w: SCSI-SEL */
642 #define CATN 0x08 /* r/w: SCSI-ATN */
643 #define CMSG 0x04 /* r/w: SCSI-MSG */
644 #define CC_D 0x02 /* r/w: SCSI-C_D */
645 #define CI_O 0x01 /* r/w: SCSI-I_O */
646
647/*0a*/ u8 nc_ssid;
648
649/*0b*/ u8 nc_sbcl;
650
651/*0c*/ u8 nc_dstat;
652 #define DFE 0x80 /* sta: dma fifo empty */
653 #define MDPE 0x40 /* int: master data parity error */
654 #define BF 0x20 /* int: script: bus fault */
655 #define ABRT 0x10 /* int: script: command aborted */
656 #define SSI 0x08 /* int: script: single step */
657 #define SIR 0x04 /* int: script: interrupt instruct. */
658 #define IID 0x01 /* int: script: illegal instruct. */
659
660/*0d*/ u8 nc_sstat0;
661 #define ILF 0x80 /* sta: data in SIDL register lsb */
662 #define ORF 0x40 /* sta: data in SODR register lsb */
663 #define OLF 0x20 /* sta: data in SODL register lsb */
664 #define AIP 0x10 /* sta: arbitration in progress */
665 #define LOA 0x08 /* sta: arbitration lost */
666 #define WOA 0x04 /* sta: arbitration won */
667 #define IRST 0x02 /* sta: scsi reset signal */
668 #define SDP 0x01 /* sta: scsi parity signal */
669
670/*0e*/ u8 nc_sstat1;
671 #define FF3210 0xf0 /* sta: bytes in the scsi fifo */
672
673/*0f*/ u8 nc_sstat2;
674 #define ILF1 0x80 /* sta: data in SIDL register msb[W]*/
675 #define ORF1 0x40 /* sta: data in SODR register msb[W]*/
676 #define OLF1 0x20 /* sta: data in SODL register msb[W]*/
677 #define DM 0x04 /* sta: DIFFSENS mismatch (895/6 only) */
678 #define LDSC 0x02 /* sta: disconnect & reconnect */
679
680/*10*/ u8 nc_dsa; /* --> Base page */
681/*11*/ u8 nc_dsa1;
682/*12*/ u8 nc_dsa2;
683/*13*/ u8 nc_dsa3;
684
685/*14*/ u8 nc_istat; /* --> Main Command and status */
686 #define CABRT 0x80 /* cmd: abort current operation */
687 #define SRST 0x40 /* mod: reset chip */
688 #define SIGP 0x20 /* r/w: message from host to ncr */
689 #define SEM 0x10 /* r/w: message between host + ncr */
690 #define CON 0x08 /* sta: connected to scsi */
691 #define INTF 0x04 /* sta: int on the fly (reset by wr)*/
692 #define SIP 0x02 /* sta: scsi-interrupt */
693 #define DIP 0x01 /* sta: host/script interrupt */
694
695/*15*/ u8 nc_istat1; /* 896 and later cores only */
696 #define FLSH 0x04 /* sta: chip is flushing */
697 #define SRUN 0x02 /* sta: scripts are running */
698 #define SIRQD 0x01 /* r/w: disable INT pin */
699
700/*16*/ u8 nc_mbox0; /* 896 and later cores only */
701/*17*/ u8 nc_mbox1; /* 896 and later cores only */
702
703/*18*/ u8 nc_ctest0;
704 #define EHP 0x04 /* 720 even host parity */
705/*19*/ u8 nc_ctest1;
706
707/*1a*/ u8 nc_ctest2;
708 #define CSIGP 0x40
709 /* bits 0-2,7 rsvd for C1010 */
710
711/*1b*/ u8 nc_ctest3;
712 #define FLF 0x08 /* cmd: flush dma fifo */
713 #define CLF 0x04 /* cmd: clear dma fifo */
714 #define FM 0x02 /* mod: fetch pin mode */
715 #define WRIE 0x01 /* mod: write and invalidate enable */
716 /* bits 4-7 rsvd for C1010 */
717
718/*1c*/ u32 nc_temp; /* ### Temporary stack */
719
720/*20*/ u8 nc_dfifo;
721/*21*/ u8 nc_ctest4;
722 #define MUX 0x80 /* 720 host bus multiplex mode */
723 #define BDIS 0x80 /* mod: burst disable */
724 #define MPEE 0x08 /* mod: master parity error enable */
725
726/*22*/ u8 nc_ctest5;
727 #define DFS 0x20 /* mod: dma fifo size */
728 /* bits 0-1, 3-7 rsvd for C1010 */
729/*23*/ u8 nc_ctest6;
730
731/*24*/ u32 nc_dbc; /* ### Byte count and command */
732/*28*/ u32 nc_dnad; /* ### Next command register */
733/*2c*/ u32 nc_dsp; /* --> Script Pointer */
734/*30*/ u32 nc_dsps; /* --> Script pointer save/opcode#2 */
735
736/*34*/ u8 nc_scratcha; /* Temporary register a */
737/*35*/ u8 nc_scratcha1;
738/*36*/ u8 nc_scratcha2;
739/*37*/ u8 nc_scratcha3;
740
741/*38*/ u8 nc_dmode;
742 #define BL_2 0x80 /* mod: burst length shift value +2 */
743 #define BL_1 0x40 /* mod: burst length shift value +1 */
744 #define ERL 0x08 /* mod: enable read line */
745 #define ERMP 0x04 /* mod: enable read multiple */
746 #define BOF 0x02 /* mod: burst op code fetch */
747
748/*39*/ u8 nc_dien;
749/*3a*/ u8 nc_sbr;
750
751/*3b*/ u8 nc_dcntl; /* --> Script execution control */
752 #define CLSE 0x80 /* mod: cache line size enable */
753 #define PFF 0x40 /* cmd: pre-fetch flush */
754 #define PFEN 0x20 /* mod: pre-fetch enable */
755 #define EA 0x20 /* mod: 720 enable-ack */
756 #define SSM 0x10 /* mod: single step mode */
757 #define IRQM 0x08 /* mod: irq mode (1 = totem pole !) */
758 #define STD 0x04 /* cmd: start dma mode */
759 #define IRQD 0x02 /* mod: irq disable */
760 #define NOCOM 0x01 /* cmd: protect sfbr while reselect */
761 /* bits 0-1 rsvd for C1010 */
762
763/*3c*/ u32 nc_adder;
764
765/*40*/ u16 nc_sien; /* -->: interrupt enable */
766/*42*/ u16 nc_sist; /* <--: interrupt status */
767 #define SBMC 0x1000/* sta: SCSI Bus Mode Change (895/6 only) */
768 #define STO 0x0400/* sta: timeout (select) */
769 #define GEN 0x0200/* sta: timeout (general) */
770 #define HTH 0x0100/* sta: timeout (handshake) */
771 #define MA 0x80 /* sta: phase mismatch */
772 #define CMP 0x40 /* sta: arbitration complete */
773 #define SEL 0x20 /* sta: selected by another device */
774 #define RSL 0x10 /* sta: reselected by another device*/
775 #define SGE 0x08 /* sta: gross error (over/underflow)*/
776 #define UDC 0x04 /* sta: unexpected disconnect */
777 #define RST 0x02 /* sta: scsi bus reset detected */
778 #define PAR 0x01 /* sta: scsi parity error */
779
780/*44*/ u8 nc_slpar;
781/*45*/ u8 nc_swide;
782/*46*/ u8 nc_macntl;
783/*47*/ u8 nc_gpcntl;
784/*48*/ u8 nc_stime0; /* cmd: timeout for select&handshake*/
785/*49*/ u8 nc_stime1; /* cmd: timeout user defined */
786/*4a*/ u16 nc_respid; /* sta: Reselect-IDs */
787
788/*4c*/ u8 nc_stest0;
789
790/*4d*/ u8 nc_stest1;
791 #define SCLK 0x80 /* Use the PCI clock as SCSI clock */
792 #define DBLEN 0x08 /* clock doubler running */
793 #define DBLSEL 0x04 /* clock doubler selected */
794
795
796/*4e*/ u8 nc_stest2;
797 #define ROF 0x40 /* reset scsi offset (after gross error!) */
798 #define DIF 0x20 /* 720 SCSI differential mode */
799 #define EXT 0x02 /* extended filtering */
800
801/*4f*/ u8 nc_stest3;
802 #define TE 0x80 /* c: tolerAnt enable */
803 #define HSC 0x20 /* c: Halt SCSI Clock */
804 #define CSF 0x02 /* c: clear scsi fifo */
805
806/*50*/ u16 nc_sidl; /* Lowlevel: latched from scsi data */
807/*52*/ u8 nc_stest4;
808 #define SMODE 0xc0 /* SCSI bus mode (895/6 only) */
809 #define SMODE_HVD 0x40 /* High Voltage Differential */
810 #define SMODE_SE 0x80 /* Single Ended */
811 #define SMODE_LVD 0xc0 /* Low Voltage Differential */
812 #define LCKFRQ 0x20 /* Frequency Lock (895/6 only) */
813 /* bits 0-5 rsvd for C1010 */
814
815/*53*/ u8 nc_53_;
816/*54*/ u16 nc_sodl; /* Lowlevel: data out to scsi data */
817/*56*/ u8 nc_ccntl0; /* Chip Control 0 (896) */
818 #define ENPMJ 0x80 /* Enable Phase Mismatch Jump */
819 #define PMJCTL 0x40 /* Phase Mismatch Jump Control */
820 #define ENNDJ 0x20 /* Enable Non Data PM Jump */
821 #define DISFC 0x10 /* Disable Auto FIFO Clear */
822 #define DILS 0x02 /* Disable Internal Load/Store */
823 #define DPR 0x01 /* Disable Pipe Req */
824
825/*57*/ u8 nc_ccntl1; /* Chip Control 1 (896) */
826 #define ZMOD 0x80 /* High Impedance Mode */
827 #define DIC 0x10 /* Disable Internal Cycles */
828 #define DDAC 0x08 /* Disable Dual Address Cycle */
829 #define XTIMOD 0x04 /* 64-bit Table Ind. Indexing Mode */
830 #define EXTIBMV 0x02 /* Enable 64-bit Table Ind. BMOV */
831 #define EXDBMV 0x01 /* Enable 64-bit Direct BMOV */
832
833/*58*/ u16 nc_sbdl; /* Lowlevel: data from scsi data */
834/*5a*/ u16 nc_5a_;
835
836/*5c*/ u8 nc_scr0; /* Working register B */
837/*5d*/ u8 nc_scr1; /* */
838/*5e*/ u8 nc_scr2; /* */
839/*5f*/ u8 nc_scr3; /* */
840
841/*60*/ u8 nc_scrx[64]; /* Working register C-R */
842/*a0*/ u32 nc_mmrs; /* Memory Move Read Selector */
843/*a4*/ u32 nc_mmws; /* Memory Move Write Selector */
844/*a8*/ u32 nc_sfs; /* Script Fetch Selector */
845/*ac*/ u32 nc_drs; /* DSA Relative Selector */
846/*b0*/ u32 nc_sbms; /* Static Block Move Selector */
847/*b4*/ u32 nc_dbms; /* Dynamic Block Move Selector */
848/*b8*/ u32 nc_dnad64; /* DMA Next Address 64 */
849/*bc*/ u16 nc_scntl4; /* C1010 only */
850 #define U3EN 0x80 /* Enable Ultra 3 */
851 #define AIPEN 0x40 /* Allow check upper byte lanes */
852 #define XCLKH_DT 0x08 /* Extra clock of data hold on DT
853 transfer edge */
854 #define XCLKH_ST 0x04 /* Extra clock of data hold on ST
855 transfer edge */
856
857/*be*/ u8 nc_aipcntl0; /* Epat Control 1 C1010 only */
858/*bf*/ u8 nc_aipcntl1; /* AIP Control C1010_66 Only */
859
860/*c0*/ u32 nc_pmjad1; /* Phase Mismatch Jump Address 1 */
861/*c4*/ u32 nc_pmjad2; /* Phase Mismatch Jump Address 2 */
862/*c8*/ u8 nc_rbc; /* Remaining Byte Count */
863/*c9*/ u8 nc_rbc1; /* */
864/*ca*/ u8 nc_rbc2; /* */
865/*cb*/ u8 nc_rbc3; /* */
866
867/*cc*/ u8 nc_ua; /* Updated Address */
868/*cd*/ u8 nc_ua1; /* */
869/*ce*/ u8 nc_ua2; /* */
870/*cf*/ u8 nc_ua3; /* */
871/*d0*/ u32 nc_esa; /* Entry Storage Address */
872/*d4*/ u8 nc_ia; /* Instruction Address */
873/*d5*/ u8 nc_ia1;
874/*d6*/ u8 nc_ia2;
875/*d7*/ u8 nc_ia3;
876/*d8*/ u32 nc_sbc; /* SCSI Byte Count (3 bytes only) */
877/*dc*/ u32 nc_csbc; /* Cumulative SCSI Byte Count */
878
879 /* Following for C1010 only */
880/*e0*/ u16 nc_crcpad; /* CRC Value */
881/*e2*/ u8 nc_crccntl0; /* CRC control register */
882 #define SNDCRC 0x10 /* Send CRC Request */
883/*e3*/ u8 nc_crccntl1; /* CRC control register */
884/*e4*/ u32 nc_crcdata; /* CRC data register */
885/*e8*/ u32 nc_e8_; /* rsvd */
886/*ec*/ u32 nc_ec_; /* rsvd */
887/*f0*/ u16 nc_dfbc; /* DMA FIFO byte count */
888
889};
890
891/*-----------------------------------------------------------
892**
893** Utility macros for the script.
894**
895**-----------------------------------------------------------
896*/
897
898#define REGJ(p,r) (offsetof(struct ncr_reg, p ## r))
899#define REG(r) REGJ (nc_, r)
900
901typedef u32 ncrcmd;
902
903/*-----------------------------------------------------------
904**
905** SCSI phases
906**
907** DT phases illegal for ncr driver.
908**
909**-----------------------------------------------------------
910*/
911
912#define SCR_DATA_OUT 0x00000000
913#define SCR_DATA_IN 0x01000000
914#define SCR_COMMAND 0x02000000
915#define SCR_STATUS 0x03000000
916#define SCR_DT_DATA_OUT 0x04000000
917#define SCR_DT_DATA_IN 0x05000000
918#define SCR_MSG_OUT 0x06000000
919#define SCR_MSG_IN 0x07000000
920
921#define SCR_ILG_OUT 0x04000000
922#define SCR_ILG_IN 0x05000000
923
924/*-----------------------------------------------------------
925**
926** Data transfer via SCSI.
927**
928**-----------------------------------------------------------
929**
930** MOVE_ABS (LEN)
931** <<start address>>
932**
933** MOVE_IND (LEN)
934** <<dnad_offset>>
935**
936** MOVE_TBL
937** <<dnad_offset>>
938**
939**-----------------------------------------------------------
940*/
941
942#define OPC_MOVE 0x08000000
943
944#define SCR_MOVE_ABS(l) ((0x00000000 | OPC_MOVE) | (l))
945#define SCR_MOVE_IND(l) ((0x20000000 | OPC_MOVE) | (l))
946#define SCR_MOVE_TBL (0x10000000 | OPC_MOVE)
947
948#define SCR_CHMOV_ABS(l) ((0x00000000) | (l))
949#define SCR_CHMOV_IND(l) ((0x20000000) | (l))
950#define SCR_CHMOV_TBL (0x10000000)
951
952struct scr_tblmove {
953 u32 size;
954 u32 addr;
955};
956
957/*-----------------------------------------------------------
958**
959** Selection
960**
961**-----------------------------------------------------------
962**
963** SEL_ABS | SCR_ID (0..15) [ | REL_JMP]
964** <<alternate_address>>
965**
966** SEL_TBL | << dnad_offset>> [ | REL_JMP]
967** <<alternate_address>>
968**
969**-----------------------------------------------------------
970*/
971
972#define SCR_SEL_ABS 0x40000000
973#define SCR_SEL_ABS_ATN 0x41000000
974#define SCR_SEL_TBL 0x42000000
975#define SCR_SEL_TBL_ATN 0x43000000
976
977
978#ifdef SCSI_NCR_BIG_ENDIAN
979struct scr_tblsel {
980 u8 sel_scntl3;
981 u8 sel_id;
982 u8 sel_sxfer;
983 u8 sel_scntl4;
984};
985#else
986struct scr_tblsel {
987 u8 sel_scntl4;
988 u8 sel_sxfer;
989 u8 sel_id;
990 u8 sel_scntl3;
991};
992#endif
993
994#define SCR_JMP_REL 0x04000000
995#define SCR_ID(id) (((u32)(id)) << 16)
996
997/*-----------------------------------------------------------
998**
999** Waiting for Disconnect or Reselect
1000**
1001**-----------------------------------------------------------
1002**
1003** WAIT_DISC
1004** dummy: <<alternate_address>>
1005**
1006** WAIT_RESEL
1007** <<alternate_address>>
1008**
1009**-----------------------------------------------------------
1010*/
1011
1012#define SCR_WAIT_DISC 0x48000000
1013#define SCR_WAIT_RESEL 0x50000000
1014
1015/*-----------------------------------------------------------
1016**
1017** Bit Set / Reset
1018**
1019**-----------------------------------------------------------
1020**
1021** SET (flags {|.. })
1022**
1023** CLR (flags {|.. })
1024**
1025**-----------------------------------------------------------
1026*/
1027
1028#define SCR_SET(f) (0x58000000 | (f))
1029#define SCR_CLR(f) (0x60000000 | (f))
1030
1031#define SCR_CARRY 0x00000400
1032#define SCR_TRG 0x00000200
1033#define SCR_ACK 0x00000040
1034#define SCR_ATN 0x00000008
1035
1036
1037
1038
1039/*-----------------------------------------------------------
1040**
1041** Memory to memory move
1042**
1043**-----------------------------------------------------------
1044**
1045** COPY (bytecount)
1046** << source_address >>
1047** << destination_address >>
1048**
1049** SCR_COPY sets the NO FLUSH option by default.
1050** SCR_COPY_F does not set this option.
1051**
1052** For chips which do not support this option,
1053** ncr_copy_and_bind() will remove this bit.
1054**-----------------------------------------------------------
1055*/
1056
1057#define SCR_NO_FLUSH 0x01000000
1058
1059#define SCR_COPY(n) (0xc0000000 | SCR_NO_FLUSH | (n))
1060#define SCR_COPY_F(n) (0xc0000000 | (n))
1061
1062/*-----------------------------------------------------------
1063**
1064** Register move and binary operations
1065**
1066**-----------------------------------------------------------
1067**
1068** SFBR_REG (reg, op, data) reg = SFBR op data
1069** << 0 >>
1070**
1071** REG_SFBR (reg, op, data) SFBR = reg op data
1072** << 0 >>
1073**
1074** REG_REG (reg, op, data) reg = reg op data
1075** << 0 >>
1076**
1077**-----------------------------------------------------------
1078** On 810A, 860, 825A, 875, 895 and 896 chips the content
1079** of SFBR register can be used as data (SCR_SFBR_DATA).
1080** The 896 has additional IO registers starting at
1081** offset 0x80. Bit 7 of register offset is stored in
1082** bit 7 of the SCRIPTS instruction first DWORD.
1083**-----------------------------------------------------------
1084*/
1085
1086#define SCR_REG_OFS(ofs) ((((ofs) & 0x7f) << 16ul) + ((ofs) & 0x80))
1087
1088#define SCR_SFBR_REG(reg,op,data) \
1089 (0x68000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul))
1090
1091#define SCR_REG_SFBR(reg,op,data) \
1092 (0x70000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul))
1093
1094#define SCR_REG_REG(reg,op,data) \
1095 (0x78000000 | (SCR_REG_OFS(REG(reg))) | (op) | (((data)&0xff)<<8ul))
1096
1097
1098#define SCR_LOAD 0x00000000
1099#define SCR_SHL 0x01000000
1100#define SCR_OR 0x02000000
1101#define SCR_XOR 0x03000000
1102#define SCR_AND 0x04000000
1103#define SCR_SHR 0x05000000
1104#define SCR_ADD 0x06000000
1105#define SCR_ADDC 0x07000000
1106
1107#define SCR_SFBR_DATA (0x00800000>>8ul) /* Use SFBR as data */
1108
1109/*-----------------------------------------------------------
1110**
1111** FROM_REG (reg) SFBR = reg
1112** << 0 >>
1113**
1114** TO_REG (reg) reg = SFBR
1115** << 0 >>
1116**
1117** LOAD_REG (reg, data) reg = <data>
1118** << 0 >>
1119**
1120** LOAD_SFBR(data) SFBR = <data>
1121** << 0 >>
1122**
1123**-----------------------------------------------------------
1124*/
1125
1126#define SCR_FROM_REG(reg) \
1127 SCR_REG_SFBR(reg,SCR_OR,0)
1128
1129#define SCR_TO_REG(reg) \
1130 SCR_SFBR_REG(reg,SCR_OR,0)
1131
1132#define SCR_LOAD_REG(reg,data) \
1133 SCR_REG_REG(reg,SCR_LOAD,data)
1134
1135#define SCR_LOAD_SFBR(data) \
1136 (SCR_REG_SFBR (gpreg, SCR_LOAD, data))
1137
1138/*-----------------------------------------------------------
1139**
1140** LOAD from memory to register.
1141** STORE from register to memory.
1142**
1143** Only supported by 810A, 860, 825A, 875, 895 and 896.
1144**
1145**-----------------------------------------------------------
1146**
1147** LOAD_ABS (LEN)
1148** <<start address>>
1149**
1150** LOAD_REL (LEN) (DSA relative)
1151** <<dsa_offset>>
1152**
1153**-----------------------------------------------------------
1154*/
1155
1156#define SCR_REG_OFS2(ofs) (((ofs) & 0xff) << 16ul)
1157#define SCR_NO_FLUSH2 0x02000000
1158#define SCR_DSA_REL2 0x10000000
1159
1160#define SCR_LOAD_R(reg, how, n) \
1161 (0xe1000000 | how | (SCR_REG_OFS2(REG(reg))) | (n))
1162
1163#define SCR_STORE_R(reg, how, n) \
1164 (0xe0000000 | how | (SCR_REG_OFS2(REG(reg))) | (n))
1165
1166#define SCR_LOAD_ABS(reg, n) SCR_LOAD_R(reg, SCR_NO_FLUSH2, n)
1167#define SCR_LOAD_REL(reg, n) SCR_LOAD_R(reg, SCR_NO_FLUSH2|SCR_DSA_REL2, n)
1168#define SCR_LOAD_ABS_F(reg, n) SCR_LOAD_R(reg, 0, n)
1169#define SCR_LOAD_REL_F(reg, n) SCR_LOAD_R(reg, SCR_DSA_REL2, n)
1170
1171#define SCR_STORE_ABS(reg, n) SCR_STORE_R(reg, SCR_NO_FLUSH2, n)
1172#define SCR_STORE_REL(reg, n) SCR_STORE_R(reg, SCR_NO_FLUSH2|SCR_DSA_REL2,n)
1173#define SCR_STORE_ABS_F(reg, n) SCR_STORE_R(reg, 0, n)
1174#define SCR_STORE_REL_F(reg, n) SCR_STORE_R(reg, SCR_DSA_REL2, n)
1175
1176
1177/*-----------------------------------------------------------
1178**
1179** Waiting for Disconnect or Reselect
1180**
1181**-----------------------------------------------------------
1182**
1183** JUMP [ | IFTRUE/IFFALSE ( ... ) ]
1184** <<address>>
1185**
1186** JUMPR [ | IFTRUE/IFFALSE ( ... ) ]
1187** <<distance>>
1188**
1189** CALL [ | IFTRUE/IFFALSE ( ... ) ]
1190** <<address>>
1191**
1192** CALLR [ | IFTRUE/IFFALSE ( ... ) ]
1193** <<distance>>
1194**
1195** RETURN [ | IFTRUE/IFFALSE ( ... ) ]
1196** <<dummy>>
1197**
1198** INT [ | IFTRUE/IFFALSE ( ... ) ]
1199** <<ident>>
1200**
1201** INT_FLY [ | IFTRUE/IFFALSE ( ... ) ]
1202** <<ident>>
1203**
1204** Conditions:
1205** WHEN (phase)
1206** IF (phase)
1207** CARRYSET
1208** DATA (data, mask)
1209**
1210**-----------------------------------------------------------
1211*/
1212
1213#define SCR_NO_OP 0x80000000
1214#define SCR_JUMP 0x80080000
1215#define SCR_JUMP64 0x80480000
1216#define SCR_JUMPR 0x80880000
1217#define SCR_CALL 0x88080000
1218#define SCR_CALLR 0x88880000
1219#define SCR_RETURN 0x90080000
1220#define SCR_INT 0x98080000
1221#define SCR_INT_FLY 0x98180000
1222
1223#define IFFALSE(arg) (0x00080000 | (arg))
1224#define IFTRUE(arg) (0x00000000 | (arg))
1225
1226#define WHEN(phase) (0x00030000 | (phase))
1227#define IF(phase) (0x00020000 | (phase))
1228
1229#define DATA(D) (0x00040000 | ((D) & 0xff))
1230#define MASK(D,M) (0x00040000 | (((M ^ 0xff) & 0xff) << 8ul)|((D) & 0xff))
1231
1232#define CARRYSET (0x00200000)
1233
1234/*-----------------------------------------------------------
1235**
1236** SCSI constants.
1237**
1238**-----------------------------------------------------------
1239*/
1240
1241/*
1242 * End of ncrreg from FreeBSD
1243 */
1244
1245/*
1246 Build a scatter/gather entry.
1247 see sym53c8xx_2/sym_hipd.h for more detailed sym_build_sge()
1248 implementation ;)
1249 */
1250
1251#define ncr_build_sge(np, data, badd, len) \
1252do { \
1253 (data)->addr = cpu_to_scr(badd); \
1254 (data)->size = cpu_to_scr(len); \
1255} while (0)
1256
1257/*==========================================================
1258**
1259** Structures used by the detection routine to transmit
1260** device configuration to the attach function.
1261**
1262**==========================================================
1263*/
1264struct ncr_slot {
1265 u_long base;
1266 u_long base_2;
1267 u_long base_c;
1268 u_long base_2_c;
1269 void __iomem *base_v;
1270 void __iomem *base_2_v;
1271 int irq;
1272/* port and reg fields to use INB, OUTB macros */
1273 volatile struct ncr_reg __iomem *reg;
1274};
1275
1276/*==========================================================
1277**
1278** Structure used by detection routine to save data on
1279** each detected board for attach.
1280**
1281**==========================================================
1282*/
1283struct ncr_device {
1284 struct device *dev;
1285 struct ncr_slot slot;
1286 struct ncr_chip chip;
1287 u_char host_id;
1288 u8 differential;
1289};
1290
1291/* To keep track of the dma mapping (sg/single) that has been set */
1292struct ncr_cmd_priv {
1293 int data_mapped;
1294 int data_mapping;
1295};
1296
1297extern struct Scsi_Host *ncr_attach(struct scsi_host_template *tpnt, int unit, struct ncr_device *device);
1298extern void ncr53c8xx_release(struct Scsi_Host *host);
1299irqreturn_t ncr53c8xx_intr(int irq, void *dev_id);
1300extern int ncr53c8xx_init(void);
1301extern void ncr53c8xx_exit(void);
1302
1303#endif /* NCR53C8XX_H */