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1/*
2
3  Linux Driver for BusLogic MultiMaster and FlashPoint SCSI Host Adapters
4
5  Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>
6
7  This program is free software; you may redistribute and/or modify it under
8  the terms of the GNU General Public License Version 2 as published by the
9  Free Software Foundation.
10
11  This program is distributed in the hope that it will be useful, but
12  WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
13  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  for complete details.
15
16  The author respectfully requests that any modifications to this software be
17  sent directly to him for evaluation and testing.
18
19  Special thanks to Wayne Yen, Jin-Lon Hon, and Alex Win of BusLogic, whose
20  advice has been invaluable, to David Gentzel, for writing the original Linux
21  BusLogic driver, and to Paul Gortmaker, for being such a dedicated test site.
22
23  Finally, special thanks to Mylex/BusLogic for making the FlashPoint SCCB
24  Manager available as freely redistributable source code.
25
26*/
27
28#ifndef _BUSLOGIC_H
29#define _BUSLOGIC_H
30
31
32#ifndef PACKED
33#define PACKED __attribute__((packed))
34#endif
35
36/*
37  Define the maximum number of BusLogic Host Adapters supported by this driver.
38*/
39
40#define BLOGIC_MAX_ADAPTERS		16
41
42
43/*
44  Define the maximum number of Target Devices supported by this driver.
45*/
46
47#define BLOGIC_MAXDEV			16
48
49
50/*
51  Define the maximum number of Scatter/Gather Segments used by this driver.
52  For optimal performance, it is important that this limit be at least as
53  large as the largest single request generated by the I/O Subsystem.
54*/
55
56#define BLOGIC_SG_LIMIT		128
57
58
59/*
60  Define the maximum, maximum automatic, minimum automatic, and default Queue
61  Depth to allow for Target Devices depending on whether or not they support
62  Tagged Queuing and whether or not ISA Bounce Buffers are required.
63*/
64
65#define BLOGIC_MAX_TAG_DEPTH		64
66#define BLOGIC_MAX_AUTO_TAG_DEPTH	28
67#define BLOGIC_MIN_AUTO_TAG_DEPTH	7
68#define BLOGIC_TAG_DEPTH_BB		3
69#define BLOGIC_UNTAG_DEPTH		3
70#define BLOGIC_UNTAG_DEPTH_BB		2
71
72
73/*
74  Define the default amount of time in seconds to wait between a Host Adapter
75  Hard Reset which initiates a SCSI Bus Reset and issuing any SCSI commands.
76  Some SCSI devices get confused if they receive SCSI commands too soon after
77  a SCSI Bus Reset.
78*/
79
80#define BLOGIC_BUS_SETTLE_TIME		2
81
82
83/*
84  Define the maximum number of Mailboxes that should be used for MultiMaster
85  Host Adapters.  This number is chosen to be larger than the maximum Host
86  Adapter Queue Depth and small enough so that the Host Adapter structure
87  does not cross an allocation block size boundary.
88*/
89
90#define BLOGIC_MAX_MAILBOX		211
91
92
93/*
94  Define the number of CCBs that should be allocated as a group to optimize
95  Kernel memory allocation.
96*/
97
98#define BLOGIC_CCB_GRP_ALLOCSIZE	7
99
100
101/*
102  Define the Host Adapter Line and Message Buffer Sizes.
103*/
104
105#define BLOGIC_LINEBUF_SIZE		100
106#define BLOGIC_MSGBUF_SIZE		9700
107
108
109/*
110  Define the Driver Message Levels.
111*/
112
113enum blogic_msglevel {
114	BLOGIC_ANNOUNCE_LEVEL = 0,
115	BLOGIC_INFO_LEVEL = 1,
116	BLOGIC_NOTICE_LEVEL = 2,
117	BLOGIC_WARN_LEVEL = 3,
118	BLOGIC_ERR_LEVEL = 4
119};
120
121static char *blogic_msglevelmap[] = { KERN_NOTICE, KERN_NOTICE, KERN_NOTICE, KERN_WARNING, KERN_ERR };
122
123
124/*
125  Define Driver Message macros.
126*/
127
128#define blogic_announce(format, args...) \
129	blogic_msg(BLOGIC_ANNOUNCE_LEVEL, format, ##args)
130
131#define blogic_info(format, args...) \
132	blogic_msg(BLOGIC_INFO_LEVEL, format, ##args)
133
134#define blogic_notice(format, args...) \
135	blogic_msg(BLOGIC_NOTICE_LEVEL, format, ##args)
136
137#define blogic_warn(format, args...) \
138	blogic_msg(BLOGIC_WARN_LEVEL, format, ##args)
139
140#define blogic_err(format, args...) \
141	blogic_msg(BLOGIC_ERR_LEVEL, format, ##args)
142
143
144/*
145  Define the types of BusLogic Host Adapters that are supported and the number
146  of I/O Addresses required by each type.
147*/
148
149enum blogic_adapter_type {
150	BLOGIC_MULTIMASTER = 1,
151	BLOGIC_FLASHPOINT = 2
152} PACKED;
153
154#define BLOGIC_MULTIMASTER_ADDR_COUNT	4
155#define BLOGIC_FLASHPOINT_ADDR_COUNT	256
156
157static int blogic_adapter_addr_count[3] = { 0, BLOGIC_MULTIMASTER_ADDR_COUNT, BLOGIC_FLASHPOINT_ADDR_COUNT };
158
159
160/*
161  Define macros for testing the Host Adapter Type.
162*/
163
164#ifdef CONFIG_SCSI_FLASHPOINT
165
166#define blogic_multimaster_type(adapter) \
167	(adapter->adapter_type == BLOGIC_MULTIMASTER)
168
169#define blogic_flashpoint_type(adapter) \
170	(adapter->adapter_type == BLOGIC_FLASHPOINT)
171
172#else
173
174#define blogic_multimaster_type(adapter)	(true)
175#define blogic_flashpoint_type(adapter)		(false)
176
177#endif
178
179
180/*
181  Define the possible Host Adapter Bus Types.
182*/
183
184enum blogic_adapter_bus_type {
185	BLOGIC_UNKNOWN_BUS = 0,
186	BLOGIC_ISA_BUS = 1,
187	BLOGIC_EISA_BUS = 2,
188	BLOGIC_PCI_BUS = 3,
189	BLOGIC_VESA_BUS = 4,
190	BLOGIC_MCA_BUS = 5
191} PACKED;
192
193static char *blogic_adapter_busnames[] = { "Unknown", "ISA", "EISA", "PCI", "VESA", "MCA" };
194
195static enum blogic_adapter_bus_type blogic_adater_bus_types[] = {
196	BLOGIC_VESA_BUS,	/* BT-4xx */
197	BLOGIC_ISA_BUS,		/* BT-5xx */
198	BLOGIC_MCA_BUS,		/* BT-6xx */
199	BLOGIC_EISA_BUS,	/* BT-7xx */
200	BLOGIC_UNKNOWN_BUS,	/* BT-8xx */
201	BLOGIC_PCI_BUS		/* BT-9xx */
202};
203
204/*
205  Define the possible Host Adapter BIOS Disk Geometry Translations.
206*/
207
208enum blogic_bios_diskgeometry {
209	BLOGIC_BIOS_NODISK = 0,
210	BLOGIC_BIOS_DISK64x32 = 1,
211	BLOGIC_BIOS_DISK128x32 = 2,
212	BLOGIC_BIOS_DISK255x63 = 3
213} PACKED;
214
215
216/*
217  Define a 10^18 Statistics Byte Counter data type.
218*/
219
220struct blogic_byte_count {
221	unsigned int units;
222	unsigned int billions;
223};
224
225
226/*
227  Define the structure for I/O Address and Bus Probing Information.
228*/
229
230struct blogic_probeinfo {
231	enum blogic_adapter_type adapter_type;
232	enum blogic_adapter_bus_type adapter_bus_type;
233	unsigned long io_addr;
234	unsigned long pci_addr;
235	struct pci_dev *pci_device;
236	unsigned char bus;
237	unsigned char dev;
238	unsigned char irq_ch;
239};
240
241/*
242  Define the Probe Options.
243*/
244
245struct blogic_probe_options {
246	bool noprobe:1;			/* Bit 0 */
247	bool noprobe_isa:1;		/* Bit 1 */
248	bool noprobe_pci:1;		/* Bit 2 */
249	bool nosort_pci:1;		/* Bit 3 */
250	bool multimaster_first:1;	/* Bit 4 */
251	bool flashpoint_first:1;	/* Bit 5 */
252	bool limited_isa:1;		/* Bit 6 */
253	bool probe330:1;		/* Bit 7 */
254	bool probe334:1;		/* Bit 8 */
255	bool probe230:1;		/* Bit 9 */
256	bool probe234:1;		/* Bit 10 */
257	bool probe130:1;		/* Bit 11 */
258	bool probe134:1;		/* Bit 12 */
259};
260
261/*
262  Define the Global Options.
263*/
264
265struct blogic_global_options {
266	bool trace_probe:1;	/* Bit 0 */
267	bool trace_hw_reset:1;	/* Bit 1 */
268	bool trace_config:1;	/* Bit 2 */
269	bool trace_err:1;	/* Bit 3 */
270};
271
272/*
273  Define the BusLogic SCSI Host Adapter I/O Register Offsets.
274*/
275
276#define BLOGIC_CNTRL_REG	0	/* WO register */
277#define BLOGIC_STATUS_REG	0	/* RO register */
278#define BLOGIC_CMD_PARM_REG	1	/* WO register */
279#define BLOGIC_DATAIN_REG	1	/* RO register */
280#define BLOGIC_INT_REG		2	/* RO register */
281#define BLOGIC_GEOMETRY_REG	3	/* RO register */
282
283/*
284  Define the structure of the write-only Control Register.
285*/
286
287union blogic_cntrl_reg {
288	unsigned char all;
289	struct {
290		unsigned char:4;	/* Bits 0-3 */
291		bool bus_reset:1;	/* Bit 4 */
292		bool int_reset:1;	/* Bit 5 */
293		bool soft_reset:1;	/* Bit 6 */
294		bool hard_reset:1;	/* Bit 7 */
295	} cr;
296};
297
298/*
299  Define the structure of the read-only Status Register.
300*/
301
302union blogic_stat_reg {
303	unsigned char all;
304	struct {
305		bool cmd_invalid:1;	/* Bit 0 */
306		bool rsvd:1;		/* Bit 1 */
307		bool datain_ready:1;	/* Bit 2 */
308		bool cmd_param_busy:1;	/* Bit 3 */
309		bool adapter_ready:1;	/* Bit 4 */
310		bool init_reqd:1;	/* Bit 5 */
311		bool diag_failed:1;	/* Bit 6 */
312		bool diag_active:1;	/* Bit 7 */
313	} sr;
314};
315
316/*
317  Define the structure of the read-only Interrupt Register.
318*/
319
320union blogic_int_reg {
321	unsigned char all;
322	struct {
323		bool mailin_loaded:1;	/* Bit 0 */
324		bool mailout_avail:1;	/* Bit 1 */
325		bool cmd_complete:1;	/* Bit 2 */
326		bool ext_busreset:1;	/* Bit 3 */
327		unsigned char rsvd:3;	/* Bits 4-6 */
328		bool int_valid:1;	/* Bit 7 */
329	} ir;
330};
331
332/*
333  Define the structure of the read-only Geometry Register.
334*/
335
336union blogic_geo_reg {
337	unsigned char all;
338	struct {
339		enum blogic_bios_diskgeometry d0_geo:2;	/* Bits 0-1 */
340		enum blogic_bios_diskgeometry d1_geo:2;	/* Bits 2-3 */
341		unsigned char:3;	/* Bits 4-6 */
342		bool ext_trans_enable:1;	/* Bit 7 */
343	} gr;
344};
345
346/*
347  Define the BusLogic SCSI Host Adapter Command Register Operation Codes.
348*/
349
350enum blogic_opcode {
351	BLOGIC_TEST_CMP_COMPLETE = 0x00,
352	BLOGIC_INIT_MBOX = 0x01,
353	BLOGIC_EXEC_MBOX_CMD = 0x02,
354	BLOGIC_EXEC_BIOS_CMD = 0x03,
355	BLOGIC_GET_BOARD_ID = 0x04,
356	BLOGIC_ENABLE_OUTBOX_AVAIL_INT = 0x05,
357	BLOGIC_SET_SELECT_TIMEOUT = 0x06,
358	BLOGIC_SET_PREEMPT_TIME = 0x07,
359	BLOGIC_SET_TIMEOFF_BUS = 0x08,
360	BLOGIC_SET_TXRATE = 0x09,
361	BLOGIC_INQ_DEV0TO7 = 0x0A,
362	BLOGIC_INQ_CONFIG = 0x0B,
363	BLOGIC_TGT_MODE = 0x0C,
364	BLOGIC_INQ_SETUPINFO = 0x0D,
365	BLOGIC_WRITE_LOCALRAM = 0x1A,
366	BLOGIC_READ_LOCALRAM = 0x1B,
367	BLOGIC_WRITE_BUSMASTER_FIFO = 0x1C,
368	BLOGIC_READ_BUSMASTER_FIFO = 0x1D,
369	BLOGIC_ECHO_CMDDATA = 0x1F,
370	BLOGIC_ADAPTER_DIAG = 0x20,
371	BLOGIC_SET_OPTIONS = 0x21,
372	BLOGIC_INQ_DEV8TO15 = 0x23,
373	BLOGIC_INQ_DEV = 0x24,
374	BLOGIC_DISABLE_INT = 0x25,
375	BLOGIC_INIT_EXT_MBOX = 0x81,
376	BLOGIC_EXEC_SCS_CMD = 0x83,
377	BLOGIC_INQ_FWVER_D3 = 0x84,
378	BLOGIC_INQ_FWVER_LETTER = 0x85,
379	BLOGIC_INQ_PCI_INFO = 0x86,
380	BLOGIC_INQ_MODELNO = 0x8B,
381	BLOGIC_INQ_SYNC_PERIOD = 0x8C,
382	BLOGIC_INQ_EXTSETUP = 0x8D,
383	BLOGIC_STRICT_RR = 0x8F,
384	BLOGIC_STORE_LOCALRAM = 0x90,
385	BLOGIC_FETCH_LOCALRAM = 0x91,
386	BLOGIC_STORE_TO_EEPROM = 0x92,
387	BLOGIC_LOAD_AUTOSCSICODE = 0x94,
388	BLOGIC_MOD_IOADDR = 0x95,
389	BLOGIC_SETCCB_FMT = 0x96,
390	BLOGIC_WRITE_INQBUF = 0x9A,
391	BLOGIC_READ_INQBUF = 0x9B,
392	BLOGIC_FLASH_LOAD = 0xA7,
393	BLOGIC_READ_SCAMDATA = 0xA8,
394	BLOGIC_WRITE_SCAMDATA = 0xA9
395};
396
397/*
398  Define the Inquire Board ID reply structure.
399*/
400
401struct blogic_board_id {
402	unsigned char type;		/* Byte 0 */
403	unsigned char custom_features;	/* Byte 1 */
404	unsigned char fw_ver_digit1;	/* Byte 2 */
405	unsigned char fw_ver_digit2;	/* Byte 3 */
406};
407
408/*
409  Define the Inquire Configuration reply structure.
410*/
411
412struct blogic_config {
413	unsigned char:5;	/* Byte 0 Bits 0-4 */
414	bool dma_ch5:1;		/* Byte 0 Bit 5 */
415	bool dma_ch6:1;		/* Byte 0 Bit 6 */
416	bool dma_ch7:1;		/* Byte 0 Bit 7 */
417	bool irq_ch9:1;		/* Byte 1 Bit 0 */
418	bool irq_ch10:1;	/* Byte 1 Bit 1 */
419	bool irq_ch11:1;	/* Byte 1 Bit 2 */
420	bool irq_ch12:1;	/* Byte 1 Bit 3 */
421	unsigned char:1;	/* Byte 1 Bit 4 */
422	bool irq_ch14:1;	/* Byte 1 Bit 5 */
423	bool irq_ch15:1;	/* Byte 1 Bit 6 */
424	unsigned char:1;	/* Byte 1 Bit 7 */
425	unsigned char id:4;	/* Byte 2 Bits 0-3 */
426	unsigned char:4;	/* Byte 2 Bits 4-7 */
427};
428
429/*
430  Define the Inquire Setup Information reply structure.
431*/
432
433struct blogic_syncval {
434	unsigned char offset:4;		/* Bits 0-3 */
435	unsigned char tx_period:3;	/* Bits 4-6 */
436	bool sync:1;			/* Bit 7 */
437};
438
439struct blogic_setup_info {
440	bool sync:1;				/* Byte 0 Bit 0 */
441	bool parity:1;				/* Byte 0 Bit 1 */
442	unsigned char:6;			/* Byte 0 Bits 2-7 */
443	unsigned char tx_rate;			/* Byte 1 */
444	unsigned char preempt_time;		/* Byte 2 */
445	unsigned char timeoff_bus;		/* Byte 3 */
446	unsigned char mbox_count;		/* Byte 4 */
447	unsigned char mbox_addr[3];		/* Bytes 5-7 */
448	struct blogic_syncval sync0to7[8];	/* Bytes 8-15 */
449	unsigned char disconnect_ok0to7;	/* Byte 16 */
450	unsigned char sig;			/* Byte 17 */
451	unsigned char char_d;			/* Byte 18 */
452	unsigned char bus_type;			/* Byte 19 */
453	unsigned char wide_tx_ok0to7;		/* Byte 20 */
454	unsigned char wide_tx_active0to7;	/* Byte 21 */
455	struct blogic_syncval sync8to15[8];	/* Bytes 22-29 */
456	unsigned char disconnect_ok8to15;	/* Byte 30 */
457	unsigned char:8;			/* Byte 31 */
458	unsigned char wide_tx_ok8to15;		/* Byte 32 */
459	unsigned char wide_tx_active8to15;	/* Byte 33 */
460};
461
462/*
463  Define the Initialize Extended Mailbox request structure.
464*/
465
466struct blogic_extmbox_req {
467	unsigned char mbox_count;	/* Byte 0 */
468	u32 base_mbox_addr;		/* Bytes 1-4 */
469} PACKED;
470
471
472/*
473  Define the Inquire PCI Host Adapter Information reply type.  The ISA
474  Compatible I/O Port values are defined here and are also used with
475  the Modify I/O Address command.
476*/
477
478enum blogic_isa_ioport {
479	BLOGIC_IO_330 = 0,
480	BLOGIC_IO_334 = 1,
481	BLOGIC_IO_230 = 2,
482	BLOGIC_IO_234 = 3,
483	BLOGIC_IO_130 = 4,
484	BLOGIC_IO_134 = 5,
485	BLOGIC_IO_DISABLE = 6,
486	BLOGIC_IO_DISABLE2 = 7
487} PACKED;
488
489struct blogic_adapter_info {
490	enum blogic_isa_ioport isa_port;	/* Byte 0 */
491	unsigned char irq_ch;		/* Byte 1 */
492	bool low_term:1;		/* Byte 2 Bit 0 */
493	bool high_term:1;		/* Byte 2 Bit 1 */
494	unsigned char:2;		/* Byte 2 Bits 2-3 */
495	bool JP1:1;			/* Byte 2 Bit 4 */
496	bool JP2:1;			/* Byte 2 Bit 5 */
497	bool JP3:1;			/* Byte 2 Bit 6 */
498	bool genericinfo_valid:1;	/* Byte 2 Bit 7 */
499	unsigned char:8;		/* Byte 3 */
500};
501
502/*
503  Define the Inquire Extended Setup Information reply structure.
504*/
505
506struct blogic_ext_setup {
507	unsigned char bus_type;		/* Byte 0 */
508	unsigned char bios_addr;	/* Byte 1 */
509	unsigned short sg_limit;	/* Bytes 2-3 */
510	unsigned char mbox_count;	/* Byte 4 */
511	u32 base_mbox_addr;		/* Bytes 5-8 */
512	struct {
513		unsigned char:2;	/* Byte 9 Bits 0-1 */
514		bool fast_on_eisa:1;	/* Byte 9 Bit 2 */
515		unsigned char:3;	/* Byte 9 Bits 3-5 */
516		bool level_int:1;	/* Byte 9 Bit 6 */
517		unsigned char:1;	/* Byte 9 Bit 7 */
518	} misc;
519	unsigned char fw_rev[3];	/* Bytes 10-12 */
520	bool wide:1;			/* Byte 13 Bit 0 */
521	bool differential:1;		/* Byte 13 Bit 1 */
522	bool scam:1;			/* Byte 13 Bit 2 */
523	bool ultra:1;			/* Byte 13 Bit 3 */
524	bool smart_term:1;		/* Byte 13 Bit 4 */
525	unsigned char:3;		/* Byte 13 Bits 5-7 */
526} PACKED;
527
528/*
529  Define the Enable Strict Round Robin Mode request type.
530*/
531
532enum blogic_rr_req {
533	BLOGIC_AGGRESSIVE_RR = 0,
534	BLOGIC_STRICT_RR_MODE = 1
535} PACKED;
536
537
538/*
539  Define the Fetch Host Adapter Local RAM request type.
540*/
541
542#define BLOGIC_BIOS_BASE		0
543#define BLOGIC_AUTOSCSI_BASE		64
544
545struct blogic_fetch_localram {
546	unsigned char offset;	/* Byte 0 */
547	unsigned char count;	/* Byte 1 */
548};
549
550/*
551  Define the Host Adapter Local RAM AutoSCSI structure.
552*/
553
554struct blogic_autoscsi {
555	unsigned char factory_sig[2];		/* Bytes 0-1 */
556	unsigned char info_bytes;		/* Byte 2 */
557	unsigned char adapter_type[6];		/* Bytes 3-8 */
558	unsigned char:8;			/* Byte 9 */
559	bool floppy:1;				/* Byte 10 Bit 0 */
560	bool floppy_sec:1;			/* Byte 10 Bit 1 */
561	bool level_int:1;			/* Byte 10 Bit 2 */
562	unsigned char:2;			/* Byte 10 Bits 3-4 */
563	unsigned char systemram_bios:3;		/* Byte 10 Bits 5-7 */
564	unsigned char dma_ch:7;			/* Byte 11 Bits 0-6 */
565	bool dma_autoconf:1;			/* Byte 11 Bit 7 */
566	unsigned char irq_ch:7;			/* Byte 12 Bits 0-6 */
567	bool irq_autoconf:1;			/* Byte 12 Bit 7 */
568	unsigned char dma_tx_rate;		/* Byte 13 */
569	unsigned char scsi_id;			/* Byte 14 */
570	bool low_term:1;			/* Byte 15 Bit 0 */
571	bool parity:1;				/* Byte 15 Bit 1 */
572	bool high_term:1;			/* Byte 15 Bit 2 */
573	bool noisy_cable:1;			/* Byte 15 Bit 3 */
574	bool fast_sync_neg:1;			/* Byte 15 Bit 4 */
575	bool reset_enabled:1;			/* Byte 15 Bit 5 */
576	bool:1;					/* Byte 15 Bit 6 */
577	bool active_negation:1;			/* Byte 15 Bit 7 */
578	unsigned char bus_on_delay;		/* Byte 16 */
579	unsigned char bus_off_delay;		/* Byte 17 */
580	bool bios_enabled:1;			/* Byte 18 Bit 0 */
581	bool int19_redir_enabled:1;		/* Byte 18 Bit 1 */
582	bool ext_trans_enable:1;		/* Byte 18 Bit 2 */
583	bool removable_as_fixed:1;		/* Byte 18 Bit 3 */
584	bool:1;					/* Byte 18 Bit 4 */
585	bool morethan2_drives:1;		/* Byte 18 Bit 5 */
586	bool bios_int:1;			/* Byte 18 Bit 6 */
587	bool floptical:1;			/* Byte 19 Bit 7 */
588	unsigned short dev_enabled;		/* Bytes 19-20 */
589	unsigned short wide_ok;			/* Bytes 21-22 */
590	unsigned short fast_ok;			/* Bytes 23-24 */
591	unsigned short sync_ok;			/* Bytes 25-26 */
592	unsigned short discon_ok;		/* Bytes 27-28 */
593	unsigned short send_start_unit;		/* Bytes 29-30 */
594	unsigned short ignore_bios_scan;	/* Bytes 31-32 */
595	unsigned char pci_int_pin:2;		/* Byte 33 Bits 0-1 */
596	unsigned char adapter_ioport:2;		/* Byte 33 Bits 2-3 */
597	bool strict_rr_enabled:1;		/* Byte 33 Bit 4 */
598	bool vesabus_33mhzplus:1;		/* Byte 33 Bit 5 */
599	bool vesa_burst_write:1;		/* Byte 33 Bit 6 */
600	bool vesa_burst_read:1;			/* Byte 33 Bit 7 */
601	unsigned short ultra_ok;		/* Bytes 34-35 */
602	unsigned int:32;			/* Bytes 36-39 */
603	unsigned char:8;			/* Byte 40 */
604	unsigned char autoscsi_maxlun;		/* Byte 41 */
605	bool:1;					/* Byte 42 Bit 0 */
606	bool scam_dominant:1;			/* Byte 42 Bit 1 */
607	bool scam_enabled:1;			/* Byte 42 Bit 2 */
608	bool scam_lev2:1;			/* Byte 42 Bit 3 */
609	unsigned char:4;			/* Byte 42 Bits 4-7 */
610	bool int13_exten:1;			/* Byte 43 Bit 0 */
611	bool:1;					/* Byte 43 Bit 1 */
612	bool cd_boot:1;				/* Byte 43 Bit 2 */
613	unsigned char:5;			/* Byte 43 Bits 3-7 */
614	unsigned char boot_id:4;		/* Byte 44 Bits 0-3 */
615	unsigned char boot_ch:4;		/* Byte 44 Bits 4-7 */
616	unsigned char force_scan_order:1;	/* Byte 45 Bit 0 */
617	unsigned char:7;			/* Byte 45 Bits 1-7 */
618	unsigned short nontagged_to_alt_ok;	/* Bytes 46-47 */
619	unsigned short reneg_sync_on_check;	/* Bytes 48-49 */
620	unsigned char rsvd[10];			/* Bytes 50-59 */
621	unsigned char manuf_diag[2];		/* Bytes 60-61 */
622	unsigned short cksum;			/* Bytes 62-63 */
623} PACKED;
624
625/*
626  Define the Host Adapter Local RAM Auto SCSI Byte 45 structure.
627*/
628
629struct blogic_autoscsi_byte45 {
630	unsigned char force_scan_order:1;	/* Bit 0 */
631	unsigned char:7;	/* Bits 1-7 */
632};
633
634/*
635  Define the Host Adapter Local RAM BIOS Drive Map Byte structure.
636*/
637
638#define BLOGIC_BIOS_DRVMAP		17
639
640struct blogic_bios_drvmap {
641	unsigned char tgt_idbit3:1;			/* Bit 0 */
642	unsigned char:2;				/* Bits 1-2 */
643	enum blogic_bios_diskgeometry diskgeom:2;	/* Bits 3-4 */
644	unsigned char tgt_id:3;				/* Bits 5-7 */
645};
646
647/*
648  Define the Set CCB Format request type.  Extended LUN Format CCBs are
649  necessary to support more than 8 Logical Units per Target Device.
650*/
651
652enum blogic_setccb_fmt {
653	BLOGIC_LEGACY_LUN_CCB = 0,
654	BLOGIC_EXT_LUN_CCB = 1
655} PACKED;
656
657/*
658  Define the Outgoing Mailbox Action Codes.
659*/
660
661enum blogic_action {
662	BLOGIC_OUTBOX_FREE = 0x00,
663	BLOGIC_MBOX_START = 0x01,
664	BLOGIC_MBOX_ABORT = 0x02
665} PACKED;
666
667
668/*
669  Define the Incoming Mailbox Completion Codes.  The MultiMaster Firmware
670  only uses codes 0 - 4.  The FlashPoint SCCB Manager has no mailboxes, so
671  completion codes are stored in the CCB; it only uses codes 1, 2, 4, and 5.
672*/
673
674enum blogic_cmplt_code {
675	BLOGIC_INBOX_FREE = 0x00,
676	BLOGIC_CMD_COMPLETE_GOOD = 0x01,
677	BLOGIC_CMD_ABORT_BY_HOST = 0x02,
678	BLOGIC_CMD_NOTFOUND = 0x03,
679	BLOGIC_CMD_COMPLETE_ERROR = 0x04,
680	BLOGIC_INVALID_CCB = 0x05
681} PACKED;
682
683/*
684  Define the Command Control Block (CCB) Opcodes.
685*/
686
687enum blogic_ccb_opcode {
688	BLOGIC_INITIATOR_CCB = 0x00,
689	BLOGIC_TGT_CCB = 0x01,
690	BLOGIC_INITIATOR_CCB_SG = 0x02,
691	BLOGIC_INITIATOR_CCBB_RESIDUAL = 0x03,
692	BLOGIC_INITIATOR_CCB_SG_RESIDUAL = 0x04,
693	BLOGIC_BDR = 0x81
694} PACKED;
695
696
697/*
698  Define the CCB Data Direction Codes.
699*/
700
701enum blogic_datadir {
702	BLOGIC_UNCHECKED_TX = 0,
703	BLOGIC_DATAIN_CHECKED = 1,
704	BLOGIC_DATAOUT_CHECKED = 2,
705	BLOGIC_NOTX = 3
706};
707
708
709/*
710  Define the Host Adapter Status Codes.  The MultiMaster Firmware does not
711  return status code 0x0C; it uses 0x12 for both overruns and underruns.
712*/
713
714enum blogic_adapter_status {
715	BLOGIC_CMD_CMPLT_NORMAL = 0x00,
716	BLOGIC_LINK_CMD_CMPLT = 0x0A,
717	BLOGIC_LINK_CMD_CMPLT_FLAG = 0x0B,
718	BLOGIC_DATA_UNDERRUN = 0x0C,
719	BLOGIC_SELECT_TIMEOUT = 0x11,
720	BLOGIC_DATA_OVERRUN = 0x12,
721	BLOGIC_NOEXPECT_BUSFREE = 0x13,
722	BLOGIC_INVALID_BUSPHASE = 0x14,
723	BLOGIC_INVALID_OUTBOX_CODE = 0x15,
724	BLOGIC_INVALID_CMD_CODE = 0x16,
725	BLOGIC_LINKCCB_BADLUN = 0x17,
726	BLOGIC_BAD_CMD_PARAM = 0x1A,
727	BLOGIC_AUTOREQSENSE_FAIL = 0x1B,
728	BLOGIC_TAGQUEUE_REJECT = 0x1C,
729	BLOGIC_BAD_MSG_RCVD = 0x1D,
730	BLOGIC_HW_FAIL = 0x20,
731	BLOGIC_NORESPONSE_TO_ATN = 0x21,
732	BLOGIC_HW_RESET = 0x22,
733	BLOGIC_RST_FROM_OTHERDEV = 0x23,
734	BLOGIC_BAD_RECONNECT = 0x24,
735	BLOGIC_HW_BDR = 0x25,
736	BLOGIC_ABRT_QUEUE = 0x26,
737	BLOGIC_ADAPTER_SW_ERROR = 0x27,
738	BLOGIC_HW_TIMEOUT = 0x30,
739	BLOGIC_PARITY_ERR = 0x34
740} PACKED;
741
742
743/*
744  Define the SCSI Target Device Status Codes.
745*/
746
747enum blogic_tgt_status {
748	BLOGIC_OP_GOOD = 0x00,
749	BLOGIC_CHECKCONDITION = 0x02,
750	BLOGIC_DEVBUSY = 0x08
751} PACKED;
752
753/*
754  Define the Queue Tag Codes.
755*/
756
757enum blogic_queuetag {
758	BLOGIC_SIMPLETAG = 0,
759	BLOGIC_HEADTAG = 1,
760	BLOGIC_ORDEREDTAG = 2,
761	BLOGIC_RSVDTAG = 3
762};
763
764/*
765  Define the SCSI Command Descriptor Block (CDB).
766*/
767
768#define BLOGIC_CDB_MAXLEN			12
769
770
771/*
772  Define the Scatter/Gather Segment structure required by the MultiMaster
773  Firmware Interface and the FlashPoint SCCB Manager.
774*/
775
776struct blogic_sg_seg {
777	u32 segbytes;	/* Bytes 0-3 */
778	u32 segdata;	/* Bytes 4-7 */
779};
780
781/*
782  Define the Driver CCB Status Codes.
783*/
784
785enum blogic_ccb_status {
786	BLOGIC_CCB_FREE = 0,
787	BLOGIC_CCB_ACTIVE = 1,
788	BLOGIC_CCB_COMPLETE = 2,
789	BLOGIC_CCB_RESET = 3
790} PACKED;
791
792
793/*
794  Define the 32 Bit Mode Command Control Block (CCB) structure.  The first 40
795  bytes are defined by and common to both the MultiMaster Firmware and the
796  FlashPoint SCCB Manager.  The next 60 bytes are defined by the FlashPoint
797  SCCB Manager.  The remaining components are defined by the Linux BusLogic
798  Driver.  Extended LUN Format CCBs differ from Legacy LUN Format 32 Bit Mode
799  CCBs only in having the TagEnable and QueueTag fields moved from byte 17 to
800  byte 1, and the Logical Unit field in byte 17 expanded to 6 bits.  In theory,
801  Extended LUN Format CCBs can support up to 64 Logical Units, but in practice
802  many devices will respond improperly to Logical Units between 32 and 63, and
803  the SCSI-2 specification defines Bit 5 as LUNTAR.  Extended LUN Format CCBs
804  are used by recent versions of the MultiMaster Firmware, as well as by the
805  FlashPoint SCCB Manager; the FlashPoint SCCB Manager only supports 32 Logical
806  Units.  Since 64 Logical Units are unlikely to be needed in practice, and
807  since they are problematic for the above reasons, and since limiting them to
808  5 bits simplifies the CCB structure definition, this driver only supports
809  32 Logical Units per Target Device.
810*/
811
812struct blogic_ccb {
813	/*
814	   MultiMaster Firmware and FlashPoint SCCB Manager Common Portion.
815	 */
816	enum blogic_ccb_opcode opcode;			/* Byte 0 */
817	unsigned char:3;				/* Byte 1 Bits 0-2 */
818	enum blogic_datadir datadir:2;			/* Byte 1 Bits 3-4 */
819	bool tag_enable:1;				/* Byte 1 Bit 5 */
820	enum blogic_queuetag queuetag:2;		/* Byte 1 Bits 6-7 */
821	unsigned char cdblen;				/* Byte 2 */
822	unsigned char sense_datalen;			/* Byte 3 */
823	u32 datalen;					/* Bytes 4-7 */
824	void *data;					/* Bytes 8-11 */
825	unsigned char:8;				/* Byte 12 */
826	unsigned char:8;				/* Byte 13 */
827	enum blogic_adapter_status adapter_status;	/* Byte 14 */
828	enum blogic_tgt_status tgt_status;		/* Byte 15 */
829	unsigned char tgt_id;				/* Byte 16 */
830	unsigned char lun:5;				/* Byte 17 Bits 0-4 */
831	bool legacytag_enable:1;			/* Byte 17 Bit 5 */
832	enum blogic_queuetag legacy_tag:2;		/* Byte 17 Bits 6-7 */
833	unsigned char cdb[BLOGIC_CDB_MAXLEN];		/* Bytes 18-29 */
834	unsigned char:8;				/* Byte 30 */
835	unsigned char:8;				/* Byte 31 */
836	u32 rsvd_int;					/* Bytes 32-35 */
837	u32 sensedata;					/* Bytes 36-39 */
838	/*
839	   FlashPoint SCCB Manager Defined Portion.
840	 */
841	void (*callback) (struct blogic_ccb *);		/* Bytes 40-43 */
842	u32 base_addr;					/* Bytes 44-47 */
843	enum blogic_cmplt_code comp_code;		/* Byte 48 */
844#ifdef CONFIG_SCSI_FLASHPOINT
845	unsigned char:8;				/* Byte 49 */
846	u16 os_flags;					/* Bytes 50-51 */
847	unsigned char private[24];			/* Bytes 52-99 */
848	void *rsvd1;
849	void *rsvd2;
850	unsigned char private2[16];
851#endif
852	/*
853	   BusLogic Linux Driver Defined Portion.
854	 */
855	dma_addr_t allocgrp_head;
856	unsigned int allocgrp_size;
857	u32 dma_handle;
858	enum blogic_ccb_status status;
859	unsigned long serial;
860	struct scsi_cmnd *command;
861	struct blogic_adapter *adapter;
862	struct blogic_ccb *next;
863	struct blogic_ccb *next_all;
864	struct blogic_sg_seg sglist[BLOGIC_SG_LIMIT];
865};
866
867/*
868  Define the 32 Bit Mode Outgoing Mailbox structure.
869*/
870
871struct blogic_outbox {
872	u32 ccb;			/* Bytes 0-3 */
873	u32:24;				/* Bytes 4-6 */
874	enum blogic_action action;	/* Byte 7 */
875};
876
877/*
878  Define the 32 Bit Mode Incoming Mailbox structure.
879*/
880
881struct blogic_inbox {
882	u32 ccb;					/* Bytes 0-3 */
883	enum blogic_adapter_status adapter_status;	/* Byte 4 */
884	enum blogic_tgt_status tgt_status;		/* Byte 5 */
885	unsigned char:8;				/* Byte 6 */
886	enum blogic_cmplt_code comp_code;		/* Byte 7 */
887};
888
889
890/*
891  Define the BusLogic Driver Options structure.
892*/
893
894struct blogic_drvr_options {
895	unsigned short tagq_ok;
896	unsigned short tagq_ok_mask;
897	unsigned short bus_settle_time;
898	unsigned short stop_tgt_inquiry;
899	unsigned char common_qdepth;
900	unsigned char qdepth[BLOGIC_MAXDEV];
901};
902
903/*
904  Define the Host Adapter Target Flags structure.
905*/
906
907struct blogic_tgt_flags {
908	bool tgt_exists:1;
909	bool tagq_ok:1;
910	bool wide_ok:1;
911	bool tagq_active:1;
912	bool wide_active:1;
913	bool cmd_good:1;
914	bool tgt_info_in:1;
915};
916
917/*
918  Define the Host Adapter Target Statistics structure.
919*/
920
921#define BLOGIC_SZ_BUCKETS			10
922
923struct blogic_tgt_stats {
924	unsigned int cmds_tried;
925	unsigned int cmds_complete;
926	unsigned int read_cmds;
927	unsigned int write_cmds;
928	struct blogic_byte_count bytesread;
929	struct blogic_byte_count byteswritten;
930	unsigned int read_sz_buckets[BLOGIC_SZ_BUCKETS];
931	unsigned int write_sz_buckets[BLOGIC_SZ_BUCKETS];
932	unsigned short aborts_request;
933	unsigned short aborts_tried;
934	unsigned short aborts_done;
935	unsigned short bdr_request;
936	unsigned short bdr_tried;
937	unsigned short bdr_done;
938	unsigned short adatper_reset_req;
939	unsigned short adapter_reset_attempt;
940	unsigned short adapter_reset_done;
941};
942
943/*
944  Define the FlashPoint Card Handle data type.
945*/
946
947#define FPOINT_BADCARD_HANDLE		0xFFFFFFFFL
948
949
950/*
951  Define the FlashPoint Information structure.  This structure is defined
952  by the FlashPoint SCCB Manager.
953*/
954
955struct fpoint_info {
956	u32 base_addr;				/* Bytes 0-3 */
957	bool present;				/* Byte 4 */
958	unsigned char irq_ch;			/* Byte 5 */
959	unsigned char scsi_id;			/* Byte 6 */
960	unsigned char scsi_lun;			/* Byte 7 */
961	u16 fw_rev;				/* Bytes 8-9 */
962	u16 sync_ok;				/* Bytes 10-11 */
963	u16 fast_ok;				/* Bytes 12-13 */
964	u16 ultra_ok;				/* Bytes 14-15 */
965	u16 discon_ok;				/* Bytes 16-17 */
966	u16 wide_ok;				/* Bytes 18-19 */
967	bool parity:1;				/* Byte 20 Bit 0 */
968	bool wide:1;				/* Byte 20 Bit 1 */
969	bool softreset:1;			/* Byte 20 Bit 2 */
970	bool ext_trans_enable:1;		/* Byte 20 Bit 3 */
971	bool low_term:1;			/* Byte 20 Bit 4 */
972	bool high_term:1;			/* Byte 20 Bit 5 */
973	bool report_underrun:1;			/* Byte 20 Bit 6 */
974	bool scam_enabled:1;			/* Byte 20 Bit 7 */
975	bool scam_lev2:1;			/* Byte 21 Bit 0 */
976	unsigned char:7;			/* Byte 21 Bits 1-7 */
977	unsigned char family;			/* Byte 22 */
978	unsigned char bus_type;			/* Byte 23 */
979	unsigned char model[3];			/* Bytes 24-26 */
980	unsigned char relative_cardnum;		/* Byte 27 */
981	unsigned char rsvd[4];			/* Bytes 28-31 */
982	u32 os_rsvd;				/* Bytes 32-35 */
983	unsigned char translation_info[4];	/* Bytes 36-39 */
984	u32 rsvd2[5];				/* Bytes 40-59 */
985	u32 sec_range;				/* Bytes 60-63 */
986};
987
988/*
989  Define the BusLogic Driver Host Adapter structure.
990*/
991
992struct blogic_adapter {
993	struct Scsi_Host *scsi_host;
994	struct pci_dev *pci_device;
995	enum blogic_adapter_type adapter_type;
996	enum blogic_adapter_bus_type adapter_bus_type;
997	unsigned long io_addr;
998	unsigned long pci_addr;
999	unsigned short addr_count;
1000	unsigned char host_no;
1001	unsigned char model[9];
1002	unsigned char fw_ver[6];
1003	unsigned char full_model[18];
1004	unsigned char bus;
1005	unsigned char dev;
1006	unsigned char irq_ch;
1007	unsigned char dma_ch;
1008	unsigned char scsi_id;
1009	bool irq_acquired:1;
1010	bool dma_chan_acquired:1;
1011	bool ext_trans_enable:1;
1012	bool parity:1;
1013	bool reset_enabled:1;
1014	bool level_int:1;
1015	bool wide:1;
1016	bool differential:1;
1017	bool scam:1;
1018	bool ultra:1;
1019	bool ext_lun:1;
1020	bool terminfo_valid:1;
1021	bool low_term:1;
1022	bool high_term:1;
1023	bool need_bouncebuf:1;
1024	bool strict_rr:1;
1025	bool scam_enabled:1;
1026	bool scam_lev2:1;
1027	bool adapter_initd:1;
1028	bool adapter_extreset:1;
1029	bool adapter_intern_err:1;
1030	bool processing_ccbs;
1031	volatile bool adapter_cmd_complete;
1032	unsigned short adapter_sglimit;
1033	unsigned short drvr_sglimit;
1034	unsigned short maxdev;
1035	unsigned short maxlun;
1036	unsigned short mbox_count;
1037	unsigned short initccbs;
1038	unsigned short inc_ccbs;
1039	unsigned short alloc_ccbs;
1040	unsigned short drvr_qdepth;
1041	unsigned short adapter_qdepth;
1042	unsigned short untag_qdepth;
1043	unsigned short common_qdepth;
1044	unsigned short bus_settle_time;
1045	unsigned short sync_ok;
1046	unsigned short fast_ok;
1047	unsigned short ultra_ok;
1048	unsigned short wide_ok;
1049	unsigned short discon_ok;
1050	unsigned short tagq_ok;
1051	unsigned short ext_resets;
1052	unsigned short adapter_intern_errors;
1053	unsigned short tgt_count;
1054	unsigned short msgbuflen;
1055	u32 bios_addr;
1056	struct blogic_drvr_options *drvr_opts;
1057	struct fpoint_info fpinfo;
1058	void *cardhandle;
1059	struct list_head host_list;
1060	struct blogic_ccb *all_ccbs;
1061	struct blogic_ccb *free_ccbs;
1062	struct blogic_ccb *firstccb;
1063	struct blogic_ccb *lastccb;
1064	struct blogic_ccb *bdr_pend[BLOGIC_MAXDEV];
1065	struct blogic_tgt_flags tgt_flags[BLOGIC_MAXDEV];
1066	unsigned char qdepth[BLOGIC_MAXDEV];
1067	unsigned char sync_period[BLOGIC_MAXDEV];
1068	unsigned char sync_offset[BLOGIC_MAXDEV];
1069	unsigned char active_cmds[BLOGIC_MAXDEV];
1070	unsigned int cmds_since_rst[BLOGIC_MAXDEV];
1071	unsigned long last_seqpoint[BLOGIC_MAXDEV];
1072	unsigned long last_resettried[BLOGIC_MAXDEV];
1073	unsigned long last_resetdone[BLOGIC_MAXDEV];
1074	struct blogic_outbox *first_outbox;
1075	struct blogic_outbox *last_outbox;
1076	struct blogic_outbox *next_outbox;
1077	struct blogic_inbox *first_inbox;
1078	struct blogic_inbox *last_inbox;
1079	struct blogic_inbox *next_inbox;
1080	struct blogic_tgt_stats tgt_stats[BLOGIC_MAXDEV];
1081	unsigned char *mbox_space;
1082	dma_addr_t mbox_space_handle;
1083	unsigned int mbox_sz;
1084	unsigned long ccb_offset;
1085	char msgbuf[BLOGIC_MSGBUF_SIZE];
1086};
1087
1088/*
1089  Define a structure for the BIOS Disk Parameters.
1090*/
1091
1092struct bios_diskparam {
1093	int heads;
1094	int sectors;
1095	int cylinders;
1096};
1097
1098/*
1099  Define a structure for the SCSI Inquiry command results.
1100*/
1101
1102struct scsi_inquiry {
1103	unsigned char devtype:5;	/* Byte 0 Bits 0-4 */
1104	unsigned char dev_qual:3;	/* Byte 0 Bits 5-7 */
1105	unsigned char dev_modifier:7;	/* Byte 1 Bits 0-6 */
1106	bool rmb:1;			/* Byte 1 Bit 7 */
1107	unsigned char ansi_ver:3;	/* Byte 2 Bits 0-2 */
1108	unsigned char ecma_ver:3;	/* Byte 2 Bits 3-5 */
1109	unsigned char iso_ver:2;	/* Byte 2 Bits 6-7 */
1110	unsigned char resp_fmt:4;	/* Byte 3 Bits 0-3 */
1111	unsigned char:2;		/* Byte 3 Bits 4-5 */
1112	bool TrmIOP:1;			/* Byte 3 Bit 6 */
1113	bool AENC:1;			/* Byte 3 Bit 7 */
1114	unsigned char addl_len;		/* Byte 4 */
1115	unsigned char:8;		/* Byte 5 */
1116	unsigned char:8;		/* Byte 6 */
1117	bool SftRe:1;			/* Byte 7 Bit 0 */
1118	bool CmdQue:1;			/* Byte 7 Bit 1 */
1119	bool:1;				/* Byte 7 Bit 2 */
1120	bool linked:1;			/* Byte 7 Bit 3 */
1121	bool sync:1;			/* Byte 7 Bit 4 */
1122	bool WBus16:1;			/* Byte 7 Bit 5 */
1123	bool WBus32:1;			/* Byte 7 Bit 6 */
1124	bool RelAdr:1;			/* Byte 7 Bit 7 */
1125	unsigned char vendor[8];	/* Bytes 8-15 */
1126	unsigned char product[16];	/* Bytes 16-31 */
1127	unsigned char product_rev[4];	/* Bytes 32-35 */
1128};
1129
1130
1131/*
1132  Define functions to provide an abstraction for reading and writing the
1133  Host Adapter I/O Registers.
1134*/
1135
1136static inline void blogic_busreset(struct blogic_adapter *adapter)
1137{
1138	union blogic_cntrl_reg cr;
1139	cr.all = 0;
1140	cr.cr.bus_reset = true;
1141	outb(cr.all, adapter->io_addr + BLOGIC_CNTRL_REG);
1142}
1143
1144static inline void blogic_intreset(struct blogic_adapter *adapter)
1145{
1146	union blogic_cntrl_reg cr;
1147	cr.all = 0;
1148	cr.cr.int_reset = true;
1149	outb(cr.all, adapter->io_addr + BLOGIC_CNTRL_REG);
1150}
1151
1152static inline void blogic_softreset(struct blogic_adapter *adapter)
1153{
1154	union blogic_cntrl_reg cr;
1155	cr.all = 0;
1156	cr.cr.soft_reset = true;
1157	outb(cr.all, adapter->io_addr + BLOGIC_CNTRL_REG);
1158}
1159
1160static inline void blogic_hardreset(struct blogic_adapter *adapter)
1161{
1162	union blogic_cntrl_reg cr;
1163	cr.all = 0;
1164	cr.cr.hard_reset = true;
1165	outb(cr.all, adapter->io_addr + BLOGIC_CNTRL_REG);
1166}
1167
1168static inline unsigned char blogic_rdstatus(struct blogic_adapter *adapter)
1169{
1170	return inb(adapter->io_addr + BLOGIC_STATUS_REG);
1171}
1172
1173static inline void blogic_setcmdparam(struct blogic_adapter *adapter,
1174					unsigned char value)
1175{
1176	outb(value, adapter->io_addr + BLOGIC_CMD_PARM_REG);
1177}
1178
1179static inline unsigned char blogic_rddatain(struct blogic_adapter *adapter)
1180{
1181	return inb(adapter->io_addr + BLOGIC_DATAIN_REG);
1182}
1183
1184static inline unsigned char blogic_rdint(struct blogic_adapter *adapter)
1185{
1186	return inb(adapter->io_addr + BLOGIC_INT_REG);
1187}
1188
1189static inline unsigned char blogic_rdgeom(struct blogic_adapter *adapter)
1190{
1191	return inb(adapter->io_addr + BLOGIC_GEOMETRY_REG);
1192}
1193
1194/*
1195  blogic_execmbox issues an Execute Mailbox Command, which
1196  notifies the Host Adapter that an entry has been made in an Outgoing
1197  Mailbox.
1198*/
1199
1200static inline void blogic_execmbox(struct blogic_adapter *adapter)
1201{
1202	blogic_setcmdparam(adapter, BLOGIC_EXEC_MBOX_CMD);
1203}
1204
1205/*
1206  blogic_delay waits for Seconds to elapse.
1207*/
1208
1209static inline void blogic_delay(int seconds)
1210{
1211	mdelay(1000 * seconds);
1212}
1213
1214/*
1215  virt_to_32bit_virt maps between Kernel Virtual Addresses and
1216  32 bit Kernel Virtual Addresses.  This avoids compilation warnings
1217  on 64 bit architectures.
1218*/
1219
1220static inline u32 virt_to_32bit_virt(void *virt_addr)
1221{
1222	return (u32) (unsigned long) virt_addr;
1223}
1224
1225/*
1226  blogic_inc_count increments counter by 1, stopping at
1227  65535 rather than wrapping around to 0.
1228*/
1229
1230static inline void blogic_inc_count(unsigned short *count)
1231{
1232	if (*count < 65535)
1233		(*count)++;
1234}
1235
1236/*
1237  blogic_addcount increments Byte Counter by Amount.
1238*/
1239
1240static inline void blogic_addcount(struct blogic_byte_count *bytecount,
1241					unsigned int amount)
1242{
1243	bytecount->units += amount;
1244	if (bytecount->units > 999999999) {
1245		bytecount->units -= 1000000000;
1246		bytecount->billions++;
1247	}
1248}
1249
1250/*
1251  blogic_incszbucket increments the Bucket for Amount.
1252*/
1253
1254static inline void blogic_incszbucket(unsigned int *cmdsz_buckets,
1255					unsigned int amount)
1256{
1257	int index = 0;
1258	if (amount < 8 * 1024) {
1259		if (amount < 2 * 1024)
1260			index = (amount < 1 * 1024 ? 0 : 1);
1261		else
1262			index = (amount < 4 * 1024 ? 2 : 3);
1263	} else if (amount < 128 * 1024) {
1264		if (amount < 32 * 1024)
1265			index = (amount < 16 * 1024 ? 4 : 5);
1266		else
1267			index = (amount < 64 * 1024 ? 6 : 7);
1268	} else
1269		index = (amount < 256 * 1024 ? 8 : 9);
1270	cmdsz_buckets[index]++;
1271}
1272
1273/*
1274  Define the version number of the FlashPoint Firmware (SCCB Manager).
1275*/
1276
1277#define FLASHPOINT_FW_VER		"5.02"
1278
1279/*
1280  Define the possible return values from FlashPoint_HandleInterrupt.
1281*/
1282
1283#define FPOINT_NORMAL_INT		0x00
1284#define FPOINT_INTERN_ERR		0xFE
1285#define FPOINT_EXT_RESET		0xFF
1286
1287/*
1288  Define prototypes for the forward referenced BusLogic Driver
1289  Internal Functions.
1290*/
1291
1292static const char *blogic_drvr_info(struct Scsi_Host *);
1293static int blogic_qcmd(struct Scsi_Host *h, struct scsi_cmnd *);
1294static int blogic_diskparam(struct scsi_device *, struct block_device *, sector_t, int *);
1295static int blogic_slaveconfig(struct scsi_device *);
1296static void blogic_qcompleted_ccb(struct blogic_ccb *);
1297static irqreturn_t blogic_inthandler(int, void *);
1298static int blogic_resetadapter(struct blogic_adapter *, bool hard_reset);
1299static void blogic_msg(enum blogic_msglevel, char *, struct blogic_adapter *, ...);
1300static int __init blogic_setup(char *);
1301
1302#endif				/* _BUSLOGIC_H */
1303