1 /*
2 * linux/drivers/acorn/scsi/eesox.c
3 *
4 * Copyright (C) 1997-2003 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * This driver is based on experimentation. Hence, it may have made
11 * assumptions about the particular card that I have available, and
12 * may not be reliable!
13 *
14 * Changelog:
15 * 01-10-1997 RMK Created, READONLY version
16 * 15-02-1998 RMK READ/WRITE version
17 * added DMA support and hardware definitions
18 * 14-03-1998 RMK Updated DMA support
19 * Added terminator control
20 * 15-04-1998 RMK Only do PIO if FAS216 will allow it.
21 * 27-06-1998 RMK Changed asm/delay.h to linux/delay.h
22 * 02-04-2000 RMK 0.0.3 Fixed NO_IRQ/NO_DMA problem, updated for new
23 * error handling code.
24 */
25 #include <linux/module.h>
26 #include <linux/blk.h>
27 #include <linux/kernel.h>
28 #include <linux/string.h>
29 #include <linux/ioport.h>
30 #include <linux/sched.h>
31 #include <linux/proc_fs.h>
32 #include <linux/delay.h>
33 #include <linux/pci.h>
34 #include <linux/init.h>
35
36 #include <asm/io.h>
37 #include <asm/irq.h>
38 #include <asm/dma.h>
39 #include <asm/ecard.h>
40 #include <asm/pgtable.h>
41
42 #include "../../scsi/sd.h"
43 #include "../../scsi/hosts.h"
44 #include "fas216.h"
45 #include "scsi.h"
46
47 #include <scsi/scsicam.h>
48
49 /*
50 * List of devices that the driver will recognise
51 */
52 #define EESOXSCSI_LIST { MANU_EESOX, PROD_EESOX_SCSI2 }
53
54 #define EESOX_FAS216_OFFSET 0xc00
55 #define EESOX_FAS216_SHIFT 3
56
57 #define EESOX_DMASTAT 0xa00
58 #define EESOX_STAT_INTR 0x01
59 #define EESOX_STAT_DMA 0x02
60
61 #define EESOX_CONTROL 0xa00
62 #define EESOX_INTR_ENABLE 0x04
63 #define EESOX_TERM_ENABLE 0x02
64 #define EESOX_RESET 0x01
65
66 #define EESOX_DMADATA 0xe00
67
68 /*
69 * Version
70 */
71 #define VERSION "1.10 (22/01/2003 2.4.19-rmk5)"
72
73 /*
74 * Use term=0,1,0,0,0 to turn terminators on/off
75 */
76 static int term[MAX_ECARDS] = { 1, 1, 1, 1, 1, 1, 1, 1 };
77
78 #define NR_SG 256
79
80 struct eesoxscsi_info {
81 FAS216_Info info;
82 struct expansion_card *ec;
83
84 unsigned int ctl_port;
85 unsigned int control;
86 struct scatterlist sg[NR_SG]; /* Scatter DMA list */
87 };
88
89 /* Prototype: void eesoxscsi_irqenable(ec, irqnr)
90 * Purpose : Enable interrupts on EESOX SCSI card
91 * Params : ec - expansion card structure
92 * : irqnr - interrupt number
93 */
94 static void
eesoxscsi_irqenable(struct expansion_card * ec,int irqnr)95 eesoxscsi_irqenable(struct expansion_card *ec, int irqnr)
96 {
97 struct eesoxscsi_info *info = (struct eesoxscsi_info *)ec->irq_data;
98
99 info->control |= EESOX_INTR_ENABLE;
100
101 outb(info->control, info->ctl_port);
102 }
103
104 /* Prototype: void eesoxscsi_irqdisable(ec, irqnr)
105 * Purpose : Disable interrupts on EESOX SCSI card
106 * Params : ec - expansion card structure
107 * : irqnr - interrupt number
108 */
109 static void
eesoxscsi_irqdisable(struct expansion_card * ec,int irqnr)110 eesoxscsi_irqdisable(struct expansion_card *ec, int irqnr)
111 {
112 struct eesoxscsi_info *info = (struct eesoxscsi_info *)ec->irq_data;
113
114 info->control &= ~EESOX_INTR_ENABLE;
115
116 outb(info->control, info->ctl_port);
117 }
118
119 static const expansioncard_ops_t eesoxscsi_ops = {
120 .irqenable = eesoxscsi_irqenable,
121 .irqdisable = eesoxscsi_irqdisable,
122 };
123
124 /* Prototype: void eesoxscsi_terminator_ctl(*host, on_off)
125 * Purpose : Turn the EESOX SCSI terminators on or off
126 * Params : host - card to turn on/off
127 * : on_off - !0 to turn on, 0 to turn off
128 */
129 static void
eesoxscsi_terminator_ctl(struct Scsi_Host * host,int on_off)130 eesoxscsi_terminator_ctl(struct Scsi_Host *host, int on_off)
131 {
132 struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
133 unsigned long flags;
134
135 save_flags_cli(flags);
136 if (on_off)
137 info->control |= EESOX_TERM_ENABLE;
138 else
139 info->control &= ~EESOX_TERM_ENABLE;
140
141 outb(info->control, info->ctl_port);
142 restore_flags(flags);
143 }
144
145 /* Prototype: void eesoxscsi_intr(irq, *dev_id, *regs)
146 * Purpose : handle interrupts from EESOX SCSI card
147 * Params : irq - interrupt number
148 * dev_id - user-defined (Scsi_Host structure)
149 * regs - processor registers at interrupt
150 */
151 static void
eesoxscsi_intr(int irq,void * dev_id,struct pt_regs * regs)152 eesoxscsi_intr(int irq, void *dev_id, struct pt_regs *regs)
153 {
154 fas216_intr(dev_id);
155 }
156
157 /* Prototype: fasdmatype_t eesoxscsi_dma_setup(host, SCpnt, direction, min_type)
158 * Purpose : initialises DMA/PIO
159 * Params : host - host
160 * SCpnt - command
161 * direction - DMA on to/off of card
162 * min_type - minimum DMA support that we must have for this transfer
163 * Returns : type of transfer to be performed
164 */
165 static fasdmatype_t
eesoxscsi_dma_setup(struct Scsi_Host * host,Scsi_Pointer * SCp,fasdmadir_t direction,fasdmatype_t min_type)166 eesoxscsi_dma_setup(struct Scsi_Host *host, Scsi_Pointer *SCp,
167 fasdmadir_t direction, fasdmatype_t min_type)
168 {
169 struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
170 int dmach = host->dma_channel;
171
172 if (dmach != NO_DMA &&
173 (min_type == fasdma_real_all || SCp->this_residual >= 512)) {
174 int bufs, map_dir, dma_dir;
175
176 bufs = copy_SCp_to_sg(&info->sg[0], SCp, NR_SG);
177
178 if (direction == DMA_OUT)
179 map_dir = PCI_DMA_TODEVICE,
180 dma_dir = DMA_MODE_WRITE;
181 else
182 map_dir = PCI_DMA_FROMDEVICE,
183 dma_dir = DMA_MODE_READ;
184
185 pci_map_sg(NULL, info->sg, bufs, map_dir);
186
187 disable_dma(dmach);
188 set_dma_sg(dmach, info->sg, bufs);
189 set_dma_mode(dmach, dma_dir);
190 enable_dma(dmach);
191 return fasdma_real_all;
192 }
193 /*
194 * We don't do DMA, we only do slow PIO
195 *
196 * Some day, we will do Pseudo DMA
197 */
198 return fasdma_pseudo;
199 }
200
eesoxscsi_buffer_in(void * buf,int length,unsigned long base)201 static void eesoxscsi_buffer_in(void *buf, int length, unsigned long base)
202 {
203 const unsigned long reg_fas = base + EESOX_FAS216_OFFSET;
204 const unsigned long reg_dmastat = base + EESOX_DMASTAT;
205 const unsigned long reg_dmadata = base + EESOX_DMADATA;
206
207 do {
208 unsigned int status;
209
210 /*
211 * Interrupt request?
212 */
213 status = inb(reg_fas + (REG_STAT << EESOX_FAS216_SHIFT));
214 if (status & STAT_INT)
215 break;
216
217 /*
218 * DMA request active?
219 */
220 status = inb(reg_dmastat);
221 if (!(status & EESOX_STAT_DMA))
222 continue;
223
224 /*
225 * Get number of bytes in FIFO
226 */
227 status = inb(reg_fas + (REG_CFIS << EESOX_FAS216_SHIFT)) & CFIS_CF;
228 if (status > 16)
229 status = 16;
230 if (status > length)
231 status = length;
232
233 /*
234 * Align buffer.
235 */
236 if (((u32)buf) & 2 && status >= 2) {
237 *((u16 *)buf)++ = inw(reg_dmadata);
238 status -= 2;
239 length -= 2;
240 }
241
242 if (status >= 8) {
243 unsigned long l1, l2;
244
245 l1 = inw(reg_dmadata);
246 l1 |= inw(reg_dmadata) << 16;
247 l2 = inw(reg_dmadata);
248 l2 |= inw(reg_dmadata) << 16;
249 *((u32 *)buf)++ = l1;
250 *((u32 *)buf)++ = l2;
251 length -= 8;
252 continue;
253 }
254
255 if (status >= 4) {
256 unsigned long l1;
257
258 l1 = inw(reg_dmadata);
259 l1 |= inw(reg_dmadata) << 16;
260 *((u32 *)buf)++ = l1;
261 length -= 4;
262 continue;
263 }
264
265 if (status >= 2) {
266 *((u16 *)buf)++ = inw(reg_dmadata);
267 length -= 2;
268 }
269 } while (length);
270 }
271
eesoxscsi_buffer_out(void * buf,int length,unsigned long base)272 static void eesoxscsi_buffer_out(void *buf, int length, unsigned long base)
273 {
274 const unsigned long reg_fas = base + EESOX_FAS216_OFFSET;
275 const unsigned long reg_dmastat = base + EESOX_DMASTAT;
276 const unsigned long reg_dmadata = base + EESOX_DMADATA;
277
278 do {
279 unsigned int status;
280
281 /*
282 * Interrupt request?
283 */
284 status = inb(reg_fas + (REG_STAT << EESOX_FAS216_SHIFT));
285 if (status & STAT_INT)
286 break;
287
288 /*
289 * DMA request active?
290 */
291 status = inb(reg_dmastat);
292 if (!(status & EESOX_STAT_DMA))
293 continue;
294
295 /*
296 * Get number of bytes in FIFO
297 */
298 status = inb(reg_fas + (REG_CFIS << EESOX_FAS216_SHIFT)) & CFIS_CF;
299 if (status > 16)
300 status = 16;
301 status = 16 - status;
302 if (status > length)
303 status = length;
304
305 /*
306 * Align buffer.
307 */
308 if (((u32)buf) & 2 && status >= 2) {
309 outw(*((u16 *)buf)++, reg_dmadata);
310 status -= 2;
311 length -= 2;
312 }
313
314 if (status >= 8) {
315 unsigned long l1, l2;
316
317 l1 = *((u32 *)buf)++;
318 l2 = *((u32 *)buf)++;
319
320 outw(l1, reg_dmadata);
321 outw(l1 >> 16, reg_dmadata);
322 outw(l2, reg_dmadata);
323 outw(l2 >> 16, reg_dmadata);
324 status -= 8;
325 length -= 8;
326 continue;
327 }
328
329 if (status >= 4) {
330 unsigned long l1;
331
332 l1 = *((u32 *)buf)++;
333 outw(l1, reg_dmadata);
334 outw(l1 >> 16, reg_dmadata);
335 status -= 4;
336 length -= 4;
337 continue;
338 }
339
340 if (status >= 2) {
341 outw(*((u16 *)buf)++, reg_dmadata);
342 length -= 2;
343 }
344 } while (length);
345 }
346
347 static void
eesoxscsi_dma_pseudo(struct Scsi_Host * host,Scsi_Pointer * SCp,fasdmadir_t dir,int transfer_size)348 eesoxscsi_dma_pseudo(struct Scsi_Host *host, Scsi_Pointer *SCp,
349 fasdmadir_t dir, int transfer_size)
350 {
351 unsigned int base = host->io_port;
352 if (dir == DMA_IN) {
353 eesoxscsi_buffer_in(SCp->ptr, SCp->this_residual, base);
354 } else {
355 eesoxscsi_buffer_out(SCp->ptr, SCp->this_residual, base);
356 }
357 }
358
359 /* Prototype: int eesoxscsi_dma_stop(host, SCpnt)
360 * Purpose : stops DMA/PIO
361 * Params : host - host
362 * SCpnt - command
363 */
364 static void
eesoxscsi_dma_stop(struct Scsi_Host * host,Scsi_Pointer * SCp)365 eesoxscsi_dma_stop(struct Scsi_Host *host, Scsi_Pointer *SCp)
366 {
367 if (host->dma_channel != NO_DMA)
368 disable_dma(host->dma_channel);
369 }
370
371 /* Prototype: const char *eesoxscsi_info(struct Scsi_Host * host)
372 * Purpose : returns a descriptive string about this interface,
373 * Params : host - driver host structure to return info for.
374 * Returns : pointer to a static buffer containing null terminated string.
375 */
eesoxscsi_info(struct Scsi_Host * host)376 const char *eesoxscsi_info(struct Scsi_Host *host)
377 {
378 struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
379 static char string[150];
380
381 sprintf(string, "%s (%s) in slot %d v%s terminators o%s",
382 host->hostt->name, info->info.scsi.type, info->ec->slot_no,
383 VERSION, info->control & EESOX_TERM_ENABLE ? "n" : "ff");
384
385 return string;
386 }
387
388 /* Prototype: int eesoxscsi_set_proc_info(struct Scsi_Host *host, char *buffer, int length)
389 * Purpose : Set a driver specific function
390 * Params : host - host to setup
391 * : buffer - buffer containing string describing operation
392 * : length - length of string
393 * Returns : -EINVAL, or 0
394 */
395 static int
eesoxscsi_set_proc_info(struct Scsi_Host * host,char * buffer,int length)396 eesoxscsi_set_proc_info(struct Scsi_Host *host, char *buffer, int length)
397 {
398 int ret = length;
399
400 if (length >= 9 && strncmp(buffer, "EESOXSCSI", 9) == 0) {
401 buffer += 9;
402 length -= 9;
403
404 if (length >= 5 && strncmp(buffer, "term=", 5) == 0) {
405 if (buffer[5] == '1')
406 eesoxscsi_terminator_ctl(host, 1);
407 else if (buffer[5] == '0')
408 eesoxscsi_terminator_ctl(host, 0);
409 else
410 ret = -EINVAL;
411 } else
412 ret = -EINVAL;
413 } else
414 ret = -EINVAL;
415
416 return ret;
417 }
418
419 /* Prototype: int eesoxscsi_proc_info(char *buffer, char **start, off_t offset,
420 * int length, int host_no, int inout)
421 * Purpose : Return information about the driver to a user process accessing
422 * the /proc filesystem.
423 * Params : buffer - a buffer to write information to
424 * start - a pointer into this buffer set by this routine to the start
425 * of the required information.
426 * offset - offset into information that we have read upto.
427 * length - length of buffer
428 * host_no - host number to return information for
429 * inout - 0 for reading, 1 for writing.
430 * Returns : length of data written to buffer.
431 */
eesoxscsi_proc_info(char * buffer,char ** start,off_t offset,int length,int host_no,int inout)432 int eesoxscsi_proc_info(char *buffer, char **start, off_t offset,
433 int length, int host_no, int inout)
434 {
435 int pos, begin;
436 struct Scsi_Host *host;
437 struct eesoxscsi_info *info;
438 Scsi_Device *scd;
439
440 host = scsi_host_hn_get(host_no);
441 if (!host)
442 return 0;
443
444 if (inout == 1)
445 return eesoxscsi_set_proc_info(host, buffer, length);
446
447 info = (struct eesoxscsi_info *)host->hostdata;
448
449 begin = 0;
450 pos = sprintf(buffer, "EESOX SCSI driver v%s\n", VERSION);
451 pos += fas216_print_host(&info->info, buffer + pos);
452 pos += sprintf(buffer + pos, "Term : o%s\n",
453 info->control & EESOX_TERM_ENABLE ? "n" : "ff");
454
455 pos += fas216_print_stats(&info->info, buffer + pos);
456
457 pos += sprintf(buffer+pos, "\nAttached devices:\n");
458
459 for (scd = host->host_queue; scd; scd = scd->next) {
460 int len;
461
462 proc_print_scsidevice(scd, buffer, &len, pos);
463 pos += len;
464 pos += sprintf(buffer+pos, "Extensions: ");
465 if (scd->tagged_supported)
466 pos += sprintf(buffer+pos, "TAG %sabled [%d] ",
467 scd->tagged_queue ? "en" : "dis",
468 scd->current_tag);
469 pos += sprintf (buffer+pos, "\n");
470
471 if (pos + begin < offset) {
472 begin += pos;
473 pos = 0;
474 }
475 }
476 *start = buffer + (offset - begin);
477 pos -= offset - begin;
478 if (pos > length)
479 pos = length;
480
481 return pos;
482 }
483
484 static int eesoxscsi_probe(struct expansion_card *ec);
485
486 /* Prototype: int eesoxscsi_detect(Scsi_Host_Template * tpnt)
487 * Purpose : initialises EESOX SCSI driver
488 * Params : tpnt - template for this SCSI adapter
489 * Returns : >0 if host found, 0 otherwise.
490 */
eesoxscsi_detect(Scsi_Host_Template * tpnt)491 static int eesoxscsi_detect(Scsi_Host_Template *tpnt)
492 {
493 static const card_ids eesoxscsi_cids[] =
494 { EESOXSCSI_LIST, { 0xffff, 0xffff} };
495 struct expansion_card *ec;
496 int count = 0, ret;
497
498 ecard_startfind();
499
500 while(1) {
501 ec = ecard_find(0, eesoxscsi_cids);
502 if (!ec)
503 break;
504
505 ecard_claim(ec);
506
507 ret = eesoxscsi_probe(ec);
508 if (ret) {
509 ecard_release(ec);
510 break;
511 }
512 ++count;
513 }
514 return count;
515 }
516
517 static void eesoxscsi_remove(struct Scsi_Host *host);
518
519 /* Prototype: int eesoxscsi_release(struct Scsi_Host * host)
520 * Purpose : releases all resources used by this adapter
521 * Params : host - driver host structure to return info for.
522 */
eesoxscsi_release(struct Scsi_Host * host)523 static int eesoxscsi_release(struct Scsi_Host *host)
524 {
525 eesoxscsi_remove(host);
526 return 0;
527 }
528
529 static Scsi_Host_Template eesox_template = {
530 .module = THIS_MODULE,
531 .proc_info = eesoxscsi_proc_info,
532 .name = "EESOX SCSI",
533 .detect = eesoxscsi_detect,
534 .release = eesoxscsi_release,
535 .info = eesoxscsi_info,
536 .bios_param = scsicam_bios_param,
537 .command = fas216_command,
538 .queuecommand = fas216_queue_command,
539 .eh_host_reset_handler = fas216_eh_host_reset,
540 .eh_bus_reset_handler = fas216_eh_bus_reset,
541 .eh_device_reset_handler = fas216_eh_device_reset,
542 .eh_abort_handler = fas216_eh_abort,
543 .use_new_eh_code = 1,
544
545 .can_queue = 1,
546 .this_id = 7,
547 .sg_tablesize = SG_ALL,
548 .cmd_per_lun = 1,
549 .use_clustering = DISABLE_CLUSTERING,
550 .proc_name = "eesox",
551 };
552
553 static int
eesoxscsi_probe(struct expansion_card * ec)554 eesoxscsi_probe(struct expansion_card *ec)
555 {
556 struct Scsi_Host *host;
557 struct eesoxscsi_info *info;
558 unsigned long base;
559 int ret;
560
561 base = ecard_address(ec, ECARD_IOC, ECARD_FAST);
562
563 if (!request_region(base + EESOX_FAS216_OFFSET,
564 16 << EESOX_FAS216_SHIFT, "eesox2-fas")) {
565 ret = -EBUSY;
566 goto out;
567 }
568
569 host = scsi_register(&eesox_template,
570 sizeof(struct eesoxscsi_info));
571 if (!host) {
572 ret = -ENOMEM;
573 goto out_region;
574 }
575
576 host->io_port = base;
577 host->irq = ec->irq;
578 host->dma_channel = ec->dma;
579
580 info = (struct eesoxscsi_info *)host->hostdata;
581 info->ec = ec;
582 info->ctl_port = base + EESOX_CONTROL;
583 info->control = term[ec->slot_no] ? EESOX_TERM_ENABLE : 0;
584 outb(info->control, info->ctl_port);
585
586 ec->irqaddr = (unsigned char *)ioaddr(base + EESOX_DMASTAT);
587 ec->irqmask = EESOX_STAT_INTR;
588 ec->irq_data = info;
589 ec->ops = (expansioncard_ops_t *)&eesoxscsi_ops;
590
591 info->info.scsi.io_port = base + EESOX_FAS216_OFFSET;
592 info->info.scsi.io_shift = EESOX_FAS216_SHIFT;
593 info->info.scsi.irq = host->irq;
594 info->info.ifcfg.clockrate = 40; /* MHz */
595 info->info.ifcfg.select_timeout = 255;
596 info->info.ifcfg.asyncperiod = 200; /* ns */
597 info->info.ifcfg.sync_max_depth = 7;
598 info->info.ifcfg.cntl3 = CNTL3_FASTSCSI | CNTL3_FASTCLK;
599 info->info.ifcfg.disconnect_ok = 1;
600 info->info.ifcfg.wide_max_size = 0;
601 info->info.ifcfg.capabilities = FASCAP_PSEUDODMA;
602 info->info.dma.setup = eesoxscsi_dma_setup;
603 info->info.dma.pseudo = eesoxscsi_dma_pseudo;
604 info->info.dma.stop = eesoxscsi_dma_stop;
605
606 ret = fas216_init(host);
607 if (ret)
608 goto out_free;
609
610 ret = request_irq(host->irq, eesoxscsi_intr, 0, "eesox", &info->info);
611 if (ret) {
612 printk("scsi%d: IRQ%d not free: %d\n",
613 host->host_no, host->irq, ret);
614 goto out_remove;
615 }
616
617 if (host->dma_channel != NO_DMA) {
618 if (request_dma(host->dma_channel, "eesox")) {
619 printk("scsi%d: DMA%d not free, DMA disabled\n",
620 host->host_no, host->dma_channel);
621 host->dma_channel = NO_DMA;
622 } else {
623 set_dma_speed(host->dma_channel, 180);
624 info->info.ifcfg.capabilities |= FASCAP_DMA;
625 info->info.ifcfg.cntl3 |= CNTL3_BS8;
626 }
627 }
628
629 ret = fas216_add(host);
630 if (ret == 0)
631 goto out;
632
633 if (host->dma_channel != NO_DMA)
634 free_dma(host->dma_channel);
635 free_irq(host->irq, host);
636
637 out_remove:
638 fas216_remove(host);
639
640 out_free:
641 scsi_unregister(host);
642
643 out_region:
644 release_region(base + EESOX_FAS216_OFFSET, 16 << EESOX_FAS216_SHIFT);
645
646 out:
647 return ret;
648 }
649
eesoxscsi_remove(struct Scsi_Host * host)650 static void eesoxscsi_remove(struct Scsi_Host *host)
651 {
652 struct eesoxscsi_info *info = (struct eesoxscsi_info *)host->hostdata;
653
654 fas216_remove(host);
655
656 if (host->dma_channel != NO_DMA)
657 free_dma(host->dma_channel);
658 free_irq(host->irq, host);
659
660 release_region(host->io_port + EESOX_FAS216_OFFSET, 16 << EESOX_FAS216_SHIFT);
661
662 fas216_release(host);
663 ecard_release(info->ec);
664 }
665
eesox_init(void)666 static int __init eesox_init(void)
667 {
668 scsi_register_module(MODULE_SCSI_HA, &eesox_template);
669 if (eesox_template.present)
670 return 0;
671
672 scsi_unregister_module(MODULE_SCSI_HA, &eesox_template);
673 return -ENODEV;
674 }
675
eesox_exit(void)676 static void __exit eesox_exit(void)
677 {
678 scsi_unregister_module(MODULE_SCSI_HA, &eesox_template);
679 }
680
681 module_init(eesox_init);
682 module_exit(eesox_exit);
683
684 MODULE_AUTHOR("Russell King");
685 MODULE_DESCRIPTION("EESOX 'Fast' SCSI driver for Acorn machines");
686 MODULE_PARM(term, "1-8i");
687 MODULE_PARM_DESC(term, "SCSI bus termination");
688 MODULE_LICENSE("GPL");
689 EXPORT_NO_SYMBOLS;
690