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1/*
2 * Sun3 SCSI stuff by Erik Verbruggen (erik@bigmama.xtdnet.nl)
3 *
4 * Sun3 DMA additions by Sam Creasey (sammy@sammy.net)
5 *
6 * Adapted from mac_scsinew.h:
7 */
8/*
9 * Cumana Generic NCR5380 driver defines
10 *
11 * Copyright 1993, Drew Eckhardt
12 * Visionary Computing
13 * (Unix and Linux consulting and custom programming)
14 * drew@colorado.edu
15 * +1 (303) 440-4894
16 *
17 * ALPHA RELEASE 1.
18 *
19 * For more information, please consult
20 *
21 * NCR 5380 Family
22 * SCSI Protocol Controller
23 * Databook
24 *
25 * NCR Microelectronics
26 * 1635 Aeroplaza Drive
27 * Colorado Springs, CO 80916
28 * 1+ (719) 578-3400
29 * 1+ (800) 334-5454
30 */
31
32/*
33 * $Log: cumana_NCR5380.h,v $
34 */
35
36#ifndef SUN3_NCR5380_H
37#define SUN3_NCR5380_H
38
39#define SUN3SCSI_PUBLIC_RELEASE 1
40
41/*
42 * Int: level 2 autovector
43 * IO: type 1, base 0x00140000, 5 bits phys space: A<4..0>
44 */
45#define IRQ_SUN3_SCSI 2
46#define IOBASE_SUN3_SCSI 0x00140000
47
48#define IOBASE_SUN3_VMESCSI 0xff200000
49
50static int sun3scsi_abort(struct scsi_cmnd *);
51static int sun3scsi_detect (struct scsi_host_template *);
52static const char *sun3scsi_info (struct Scsi_Host *);
53static int sun3scsi_bus_reset(struct scsi_cmnd *);
54static int sun3scsi_queue_command(struct Scsi_Host *, struct scsi_cmnd *);
55static int sun3scsi_release (struct Scsi_Host *);
56
57#ifndef CMD_PER_LUN
58#define CMD_PER_LUN 2
59#endif
60
61#ifndef CAN_QUEUE
62#define CAN_QUEUE 16
63#endif
64
65#ifndef SG_TABLESIZE
66#define SG_TABLESIZE SG_NONE
67#endif
68
69#ifndef MAX_TAGS
70#define MAX_TAGS 32
71#endif
72
73#ifndef USE_TAGGED_QUEUING
74#define USE_TAGGED_QUEUING 1
75#endif
76
77#include <scsi/scsicam.h>
78
79#ifdef SUN3_SCSI_VME
80#define SUN3_SCSI_NAME "Sun3 NCR5380 VME SCSI"
81#else
82#define SUN3_SCSI_NAME "Sun3 NCR5380 SCSI"
83#endif
84
85#ifndef HOSTS_C
86
87#define NCR5380_implementation_fields \
88 int port, ctrl
89
90#define NCR5380_local_declare() \
91 struct Scsi_Host *_instance
92
93#define NCR5380_setup(instance) \
94 _instance = instance
95
96#define NCR5380_read(reg) sun3scsi_read(reg)
97#define NCR5380_write(reg, value) sun3scsi_write(reg, value)
98
99#define NCR5380_intr sun3scsi_intr
100#define NCR5380_queue_command sun3scsi_queue_command
101#define NCR5380_bus_reset sun3scsi_bus_reset
102#define NCR5380_abort sun3scsi_abort
103#define NCR5380_proc_info sun3scsi_proc_info
104#define NCR5380_dma_xfer_len(i, cmd, phase) \
105 sun3scsi_dma_xfer_len(cmd->SCp.this_residual,cmd,((phase) & SR_IO) ? 0 : 1)
106
107#define NCR5380_dma_write_setup(instance, data, count) sun3scsi_dma_setup(data, count, 1)
108#define NCR5380_dma_read_setup(instance, data, count) sun3scsi_dma_setup(data, count, 0)
109#define NCR5380_dma_residual sun3scsi_dma_residual
110
111#define BOARD_NORMAL 0
112#define BOARD_NCR53C400 1
113
114/* additional registers - mainly DMA control regs */
115/* these start at regbase + 8 -- directly after the NCR regs */
116struct sun3_dma_regs {
117 unsigned short dma_addr_hi; /* vme only */
118 unsigned short dma_addr_lo; /* vme only */
119 unsigned short dma_count_hi; /* vme only */
120 unsigned short dma_count_lo; /* vme only */
121 unsigned short udc_data; /* udc dma data reg (obio only) */
122 unsigned short udc_addr; /* uda dma addr reg (obio only) */
123 unsigned short fifo_data; /* fifo data reg, holds extra byte on
124 odd dma reads */
125 unsigned short fifo_count;
126 unsigned short csr; /* control/status reg */
127 unsigned short bpack_hi; /* vme only */
128 unsigned short bpack_lo; /* vme only */
129 unsigned short ivect; /* vme only */
130 unsigned short fifo_count_hi; /* vme only */
131};
132
133/* ucd chip specific regs - live in dvma space */
134struct sun3_udc_regs {
135 unsigned short rsel; /* select regs to load */
136 unsigned short addr_hi; /* high word of addr */
137 unsigned short addr_lo; /* low word */
138 unsigned short count; /* words to be xfer'd */
139 unsigned short mode_hi; /* high word of channel mode */
140 unsigned short mode_lo; /* low word of channel mode */
141};
142
143/* addresses of the udc registers */
144#define UDC_MODE 0x38
145#define UDC_CSR 0x2e /* command/status */
146#define UDC_CHN_HI 0x26 /* chain high word */
147#define UDC_CHN_LO 0x22 /* chain lo word */
148#define UDC_CURA_HI 0x1a /* cur reg A high */
149#define UDC_CURA_LO 0x0a /* cur reg A low */
150#define UDC_CURB_HI 0x12 /* cur reg B high */
151#define UDC_CURB_LO 0x02 /* cur reg B low */
152#define UDC_MODE_HI 0x56 /* mode reg high */
153#define UDC_MODE_LO 0x52 /* mode reg low */
154#define UDC_COUNT 0x32 /* words to xfer */
155
156/* some udc commands */
157#define UDC_RESET 0
158#define UDC_CHN_START 0xa0 /* start chain */
159#define UDC_INT_ENABLE 0x32 /* channel 1 int on */
160
161/* udc mode words */
162#define UDC_MODE_HIWORD 0x40
163#define UDC_MODE_LSEND 0xc2
164#define UDC_MODE_LRECV 0xd2
165
166/* udc reg selections */
167#define UDC_RSEL_SEND 0x282
168#define UDC_RSEL_RECV 0x182
169
170/* bits in csr reg */
171#define CSR_DMA_ACTIVE 0x8000
172#define CSR_DMA_CONFLICT 0x4000
173#define CSR_DMA_BUSERR 0x2000
174
175#define CSR_FIFO_EMPTY 0x400 /* fifo flushed? */
176#define CSR_SDB_INT 0x200 /* sbc interrupt pending */
177#define CSR_DMA_INT 0x100 /* dma interrupt pending */
178
179#define CSR_LEFT 0xc0
180#define CSR_LEFT_3 0xc0
181#define CSR_LEFT_2 0x80
182#define CSR_LEFT_1 0x40
183#define CSR_PACK_ENABLE 0x20
184
185#define CSR_DMA_ENABLE 0x10
186
187#define CSR_SEND 0x8 /* 1 = send 0 = recv */
188#define CSR_FIFO 0x2 /* reset fifo */
189#define CSR_INTR 0x4 /* interrupt enable */
190#define CSR_SCSI 0x1
191
192#define VME_DATA24 0x3d00
193
194// debugging printk's, taken from atari_scsi.h
195/* Debugging printk definitions:
196 *
197 * ARB -> arbitration
198 * ASEN -> auto-sense
199 * DMA -> DMA
200 * HSH -> PIO handshake
201 * INF -> information transfer
202 * INI -> initialization
203 * INT -> interrupt
204 * LNK -> linked commands
205 * MAIN -> NCR5380_main() control flow
206 * NDAT -> no data-out phase
207 * NWR -> no write commands
208 * PIO -> PIO transfers
209 * PDMA -> pseudo DMA (unused on Atari)
210 * QU -> queues
211 * RSL -> reselections
212 * SEL -> selections
213 * USL -> usleep cpde (unused on Atari)
214 * LBS -> last byte sent (unused on Atari)
215 * RSS -> restarting of selections
216 * EXT -> extended messages
217 * ABRT -> aborting and resetting
218 * TAG -> queue tag handling
219 * MER -> merging of consec. buffers
220 *
221 */
222
223#include "NCR5380.h"
224
225#if NDEBUG & NDEBUG_ARBITRATION
226#define ARB_PRINTK(format, args...) \
227 printk(KERN_DEBUG format , ## args)
228#else
229#define ARB_PRINTK(format, args...)
230#endif
231#if NDEBUG & NDEBUG_AUTOSENSE
232#define ASEN_PRINTK(format, args...) \
233 printk(KERN_DEBUG format , ## args)
234#else
235#define ASEN_PRINTK(format, args...)
236#endif
237#if NDEBUG & NDEBUG_DMA
238#define DMA_PRINTK(format, args...) \
239 printk(KERN_DEBUG format , ## args)
240#else
241#define DMA_PRINTK(format, args...)
242#endif
243#if NDEBUG & NDEBUG_HANDSHAKE
244#define HSH_PRINTK(format, args...) \
245 printk(KERN_DEBUG format , ## args)
246#else
247#define HSH_PRINTK(format, args...)
248#endif
249#if NDEBUG & NDEBUG_INFORMATION
250#define INF_PRINTK(format, args...) \
251 printk(KERN_DEBUG format , ## args)
252#else
253#define INF_PRINTK(format, args...)
254#endif
255#if NDEBUG & NDEBUG_INIT
256#define INI_PRINTK(format, args...) \
257 printk(KERN_DEBUG format , ## args)
258#else
259#define INI_PRINTK(format, args...)
260#endif
261#if NDEBUG & NDEBUG_INTR
262#define INT_PRINTK(format, args...) \
263 printk(KERN_DEBUG format , ## args)
264#else
265#define INT_PRINTK(format, args...)
266#endif
267#if NDEBUG & NDEBUG_LINKED
268#define LNK_PRINTK(format, args...) \
269 printk(KERN_DEBUG format , ## args)
270#else
271#define LNK_PRINTK(format, args...)
272#endif
273#if NDEBUG & NDEBUG_MAIN
274#define MAIN_PRINTK(format, args...) \
275 printk(KERN_DEBUG format , ## args)
276#else
277#define MAIN_PRINTK(format, args...)
278#endif
279#if NDEBUG & NDEBUG_NO_DATAOUT
280#define NDAT_PRINTK(format, args...) \
281 printk(KERN_DEBUG format , ## args)
282#else
283#define NDAT_PRINTK(format, args...)
284#endif
285#if NDEBUG & NDEBUG_NO_WRITE
286#define NWR_PRINTK(format, args...) \
287 printk(KERN_DEBUG format , ## args)
288#else
289#define NWR_PRINTK(format, args...)
290#endif
291#if NDEBUG & NDEBUG_PIO
292#define PIO_PRINTK(format, args...) \
293 printk(KERN_DEBUG format , ## args)
294#else
295#define PIO_PRINTK(format, args...)
296#endif
297#if NDEBUG & NDEBUG_PSEUDO_DMA
298#define PDMA_PRINTK(format, args...) \
299 printk(KERN_DEBUG format , ## args)
300#else
301#define PDMA_PRINTK(format, args...)
302#endif
303#if NDEBUG & NDEBUG_QUEUES
304#define QU_PRINTK(format, args...) \
305 printk(KERN_DEBUG format , ## args)
306#else
307#define QU_PRINTK(format, args...)
308#endif
309#if NDEBUG & NDEBUG_RESELECTION
310#define RSL_PRINTK(format, args...) \
311 printk(KERN_DEBUG format , ## args)
312#else
313#define RSL_PRINTK(format, args...)
314#endif
315#if NDEBUG & NDEBUG_SELECTION
316#define SEL_PRINTK(format, args...) \
317 printk(KERN_DEBUG format , ## args)
318#else
319#define SEL_PRINTK(format, args...)
320#endif
321#if NDEBUG & NDEBUG_USLEEP
322#define USL_PRINTK(format, args...) \
323 printk(KERN_DEBUG format , ## args)
324#else
325#define USL_PRINTK(format, args...)
326#endif
327#if NDEBUG & NDEBUG_LAST_BYTE_SENT
328#define LBS_PRINTK(format, args...) \
329 printk(KERN_DEBUG format , ## args)
330#else
331#define LBS_PRINTK(format, args...)
332#endif
333#if NDEBUG & NDEBUG_RESTART_SELECT
334#define RSS_PRINTK(format, args...) \
335 printk(KERN_DEBUG format , ## args)
336#else
337#define RSS_PRINTK(format, args...)
338#endif
339#if NDEBUG & NDEBUG_EXTENDED
340#define EXT_PRINTK(format, args...) \
341 printk(KERN_DEBUG format , ## args)
342#else
343#define EXT_PRINTK(format, args...)
344#endif
345#if NDEBUG & NDEBUG_ABORT
346#define ABRT_PRINTK(format, args...) \
347 printk(KERN_DEBUG format , ## args)
348#else
349#define ABRT_PRINTK(format, args...)
350#endif
351#if NDEBUG & NDEBUG_TAGS
352#define TAG_PRINTK(format, args...) \
353 printk(KERN_DEBUG format , ## args)
354#else
355#define TAG_PRINTK(format, args...)
356#endif
357#if NDEBUG & NDEBUG_MERGING
358#define MER_PRINTK(format, args...) \
359 printk(KERN_DEBUG format , ## args)
360#else
361#define MER_PRINTK(format, args...)
362#endif
363
364/* conditional macros for NCR5380_print_{,phase,status} */
365
366#define NCR_PRINT(mask) \
367 ((NDEBUG & (mask)) ? NCR5380_print(instance) : (void)0)
368
369#define NCR_PRINT_PHASE(mask) \
370 ((NDEBUG & (mask)) ? NCR5380_print_phase(instance) : (void)0)
371
372#define NCR_PRINT_STATUS(mask) \
373 ((NDEBUG & (mask)) ? NCR5380_print_status(instance) : (void)0)
374
375
376
377#endif /* ndef HOSTS_C */
378#endif /* SUN3_NCR5380_H */
379