xref: /openbmc/linux/drivers/scsi/atp870u.c (revision 8dda2eac)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *  Copyright (C) 1997	Wu Ching Chen
4  *  2.1.x update (C) 1998  Krzysztof G. Baranowski
5  *  2.5.x update (C) 2002  Red Hat
6  *  2.6.x update (C) 2004  Red Hat
7  *
8  * Marcelo Tosatti <marcelo@conectiva.com.br> : SMP fixes
9  *
10  * Wu Ching Chen : NULL pointer fixes  2000/06/02
11  *		   support atp876 chip
12  *		   enable 32 bit fifo transfer
13  *		   support cdrom & remove device run ultra speed
14  *		   fix disconnect bug  2000/12/21
15  *		   support atp880 chip lvd u160 2001/05/15
16  *		   fix prd table bug 2001/09/12 (7.1)
17  *
18  * atp885 support add by ACARD Hao Ping Lian 2005/01/05
19  */
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/interrupt.h>
23 #include <linux/kernel.h>
24 #include <linux/types.h>
25 #include <linux/string.h>
26 #include <linux/ioport.h>
27 #include <linux/delay.h>
28 #include <linux/proc_fs.h>
29 #include <linux/spinlock.h>
30 #include <linux/pci.h>
31 #include <linux/blkdev.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/slab.h>
34 #include <asm/io.h>
35 
36 #include <scsi/scsi.h>
37 #include <scsi/scsi_cmnd.h>
38 #include <scsi/scsi_device.h>
39 #include <scsi/scsi_host.h>
40 
41 #include "atp870u.h"
42 
43 static struct scsi_host_template atp870u_template;
44 static void send_s870(struct atp_unit *dev,unsigned char c);
45 static void atp_is(struct atp_unit *dev, unsigned char c, bool wide_chip,
46 		   unsigned char lvdmode);
47 
48 static inline void atp_writeb_base(struct atp_unit *atp, u8 reg, u8 val)
49 {
50 	outb(val, atp->baseport + reg);
51 }
52 
53 static inline void atp_writew_base(struct atp_unit *atp, u8 reg, u16 val)
54 {
55 	outw(val, atp->baseport + reg);
56 }
57 
58 static inline void atp_writeb_io(struct atp_unit *atp, u8 channel, u8 reg, u8 val)
59 {
60 	outb(val, atp->ioport[channel] + reg);
61 }
62 
63 static inline void atp_writew_io(struct atp_unit *atp, u8 channel, u8 reg, u16 val)
64 {
65 	outw(val, atp->ioport[channel] + reg);
66 }
67 
68 static inline void atp_writeb_pci(struct atp_unit *atp, u8 channel, u8 reg, u8 val)
69 {
70 	outb(val, atp->pciport[channel] + reg);
71 }
72 
73 static inline void atp_writel_pci(struct atp_unit *atp, u8 channel, u8 reg, u32 val)
74 {
75 	outl(val, atp->pciport[channel] + reg);
76 }
77 
78 static inline u8 atp_readb_base(struct atp_unit *atp, u8 reg)
79 {
80 	return inb(atp->baseport + reg);
81 }
82 
83 static inline u16 atp_readw_base(struct atp_unit *atp, u8 reg)
84 {
85 	return inw(atp->baseport + reg);
86 }
87 
88 static inline u32 atp_readl_base(struct atp_unit *atp, u8 reg)
89 {
90 	return inl(atp->baseport + reg);
91 }
92 
93 static inline u8 atp_readb_io(struct atp_unit *atp, u8 channel, u8 reg)
94 {
95 	return inb(atp->ioport[channel] + reg);
96 }
97 
98 static inline u16 atp_readw_io(struct atp_unit *atp, u8 channel, u8 reg)
99 {
100 	return inw(atp->ioport[channel] + reg);
101 }
102 
103 static inline u8 atp_readb_pci(struct atp_unit *atp, u8 channel, u8 reg)
104 {
105 	return inb(atp->pciport[channel] + reg);
106 }
107 
108 static inline bool is880(struct atp_unit *atp)
109 {
110 	return atp->pdev->device == ATP880_DEVID1 ||
111 	       atp->pdev->device == ATP880_DEVID2;
112 }
113 
114 static inline bool is885(struct atp_unit *atp)
115 {
116 	return atp->pdev->device == ATP885_DEVID;
117 }
118 
119 static irqreturn_t atp870u_intr_handle(int irq, void *dev_id)
120 {
121 	unsigned long flags;
122 	unsigned short int id;
123 	unsigned char i, j, c, target_id, lun,cmdp;
124 	unsigned char *prd;
125 	struct scsi_cmnd *workreq;
126 	unsigned long adrcnt, k;
127 #ifdef ED_DBGP
128 	unsigned long l;
129 #endif
130 	struct Scsi_Host *host = dev_id;
131 	struct atp_unit *dev = (struct atp_unit *)&host->hostdata;
132 
133 	for (c = 0; c < 2; c++) {
134 		j = atp_readb_io(dev, c, 0x1f);
135 		if ((j & 0x80) != 0)
136 			break;
137 		dev->in_int[c] = 0;
138 	}
139 	if ((j & 0x80) == 0)
140 		return IRQ_NONE;
141 #ifdef ED_DBGP
142 	printk("atp870u_intr_handle enter\n");
143 #endif
144 	dev->in_int[c] = 1;
145 	cmdp = atp_readb_io(dev, c, 0x10);
146 	if (dev->working[c] != 0) {
147 		if (is885(dev)) {
148 			if ((atp_readb_io(dev, c, 0x16) & 0x80) == 0)
149 				atp_writeb_io(dev, c, 0x16,
150 					      (atp_readb_io(dev, c, 0x16) | 0x80));
151 		}
152 		if ((atp_readb_pci(dev, c, 0x00) & 0x08) != 0)
153 		{
154 			for (k=0; k < 1000; k++) {
155 				if ((atp_readb_pci(dev, c, 2) & 0x08) == 0)
156 					break;
157 				if ((atp_readb_pci(dev, c, 2) & 0x01) == 0)
158 					break;
159 			}
160 		}
161 		atp_writeb_pci(dev, c, 0, 0x00);
162 
163 		i = atp_readb_io(dev, c, 0x17);
164 
165 		if (is885(dev))
166 			atp_writeb_pci(dev, c, 2, 0x06);
167 
168 		target_id = atp_readb_io(dev, c, 0x15);
169 
170 		/*
171 		 *	Remap wide devices onto id numbers
172 		 */
173 
174 		if ((target_id & 0x40) != 0) {
175 			target_id = (target_id & 0x07) | 0x08;
176 		} else {
177 			target_id &= 0x07;
178 		}
179 
180 		if ((j & 0x40) != 0) {
181 		     if (dev->last_cmd[c] == 0xff) {
182 			dev->last_cmd[c] = target_id;
183 		     }
184 		     dev->last_cmd[c] |= 0x40;
185 		}
186 		if (is885(dev))
187 			dev->r1f[c][target_id] |= j;
188 #ifdef ED_DBGP
189 		printk("atp870u_intr_handle status = %x\n",i);
190 #endif
191 		if (i == 0x85) {
192 			if ((dev->last_cmd[c] & 0xf0) != 0x40) {
193 			   dev->last_cmd[c] = 0xff;
194 			}
195 			if (is885(dev)) {
196 				adrcnt = 0;
197 				((unsigned char *) &adrcnt)[2] =
198 					atp_readb_io(dev, c, 0x12);
199 				((unsigned char *) &adrcnt)[1] =
200 					atp_readb_io(dev, c, 0x13);
201 				((unsigned char *) &adrcnt)[0] =
202 					atp_readb_io(dev, c, 0x14);
203 				if (dev->id[c][target_id].last_len != adrcnt) {
204 					k = dev->id[c][target_id].last_len;
205 					k -= adrcnt;
206 					dev->id[c][target_id].tran_len = k;
207 					dev->id[c][target_id].last_len = adrcnt;
208 				}
209 #ifdef ED_DBGP
210 				printk("dev->id[c][target_id].last_len = %d "
211 				       "dev->id[c][target_id].tran_len = %d\n",
212 				       dev->id[c][target_id].last_len,
213 				       dev->id[c][target_id].tran_len);
214 #endif
215 			}
216 
217 			/*
218 			 *      Flip wide
219 			 */
220 			if (dev->wide_id[c] != 0) {
221 				atp_writeb_io(dev, c, 0x1b, 0x01);
222 				while ((atp_readb_io(dev, c, 0x1b) & 0x01) != 0x01)
223 					atp_writeb_io(dev, c, 0x1b, 0x01);
224 			}
225 			/*
226 			 *	Issue more commands
227 			 */
228 			spin_lock_irqsave(dev->host->host_lock, flags);
229 			if (((dev->quhd[c] != dev->quend[c]) ||
230 			     (dev->last_cmd[c] != 0xff)) &&
231 			    (dev->in_snd[c] == 0)) {
232 #ifdef ED_DBGP
233 				printk("Call sent_s870\n");
234 #endif
235 				send_s870(dev,c);
236 			}
237 			spin_unlock_irqrestore(dev->host->host_lock, flags);
238 			/*
239 			 *	Done
240 			 */
241 			dev->in_int[c] = 0;
242 #ifdef ED_DBGP
243 				printk("Status 0x85 return\n");
244 #endif
245 			return IRQ_HANDLED;
246 		}
247 
248 		if (i == 0x40) {
249 		     dev->last_cmd[c] |= 0x40;
250 		     dev->in_int[c] = 0;
251 		     return IRQ_HANDLED;
252 		}
253 
254 		if (i == 0x21) {
255 			if ((dev->last_cmd[c] & 0xf0) != 0x40) {
256 			   dev->last_cmd[c] = 0xff;
257 			}
258 			adrcnt = 0;
259 			((unsigned char *) &adrcnt)[2] =
260 				atp_readb_io(dev, c, 0x12);
261 			((unsigned char *) &adrcnt)[1] =
262 				atp_readb_io(dev, c, 0x13);
263 			((unsigned char *) &adrcnt)[0] =
264 				atp_readb_io(dev, c, 0x14);
265 			k = dev->id[c][target_id].last_len;
266 			k -= adrcnt;
267 			dev->id[c][target_id].tran_len = k;
268 			dev->id[c][target_id].last_len = adrcnt;
269 			atp_writeb_io(dev, c, 0x10, 0x41);
270 			atp_writeb_io(dev, c, 0x18, 0x08);
271 			dev->in_int[c] = 0;
272 			return IRQ_HANDLED;
273 		}
274 
275 		if (is885(dev)) {
276 			if ((i == 0x4c) || (i == 0x4d) || (i == 0x8c) || (i == 0x8d)) {
277 				if ((i == 0x4c) || (i == 0x8c))
278 					i=0x48;
279 				else
280 					i=0x49;
281 			}
282 		}
283 		if ((i == 0x80) || (i == 0x8f)) {
284 #ifdef ED_DBGP
285 			printk(KERN_DEBUG "Device reselect\n");
286 #endif
287 			lun = 0;
288 			if (cmdp == 0x44 || i == 0x80)
289 				lun = atp_readb_io(dev, c, 0x1d) & 0x07;
290 			else {
291 				if ((dev->last_cmd[c] & 0xf0) != 0x40) {
292 				   dev->last_cmd[c] = 0xff;
293 				}
294 				if (cmdp == 0x41) {
295 #ifdef ED_DBGP
296 					printk("cmdp = 0x41\n");
297 #endif
298 					adrcnt = 0;
299 					((unsigned char *) &adrcnt)[2] =
300 						atp_readb_io(dev, c, 0x12);
301 					((unsigned char *) &adrcnt)[1] =
302 						atp_readb_io(dev, c, 0x13);
303 					((unsigned char *) &adrcnt)[0] =
304 						atp_readb_io(dev, c, 0x14);
305 					k = dev->id[c][target_id].last_len;
306 					k -= adrcnt;
307 					dev->id[c][target_id].tran_len = k;
308 					dev->id[c][target_id].last_len = adrcnt;
309 					atp_writeb_io(dev, c, 0x18, 0x08);
310 					dev->in_int[c] = 0;
311 					return IRQ_HANDLED;
312 				} else {
313 #ifdef ED_DBGP
314 					printk("cmdp != 0x41\n");
315 #endif
316 					atp_writeb_io(dev, c, 0x10, 0x46);
317 					dev->id[c][target_id].dirct = 0x00;
318 					atp_writeb_io(dev, c, 0x12, 0x00);
319 					atp_writeb_io(dev, c, 0x13, 0x00);
320 					atp_writeb_io(dev, c, 0x14, 0x00);
321 					atp_writeb_io(dev, c, 0x18, 0x08);
322 					dev->in_int[c] = 0;
323 					return IRQ_HANDLED;
324 				}
325 			}
326 			if (dev->last_cmd[c] != 0xff) {
327 			   dev->last_cmd[c] |= 0x40;
328 			}
329 			if (is885(dev)) {
330 				j = atp_readb_base(dev, 0x29) & 0xfe;
331 				atp_writeb_base(dev, 0x29, j);
332 			} else
333 				atp_writeb_io(dev, c, 0x10, 0x45);
334 
335 			target_id = atp_readb_io(dev, c, 0x16);
336 			/*
337 			 *	Remap wide identifiers
338 			 */
339 			if ((target_id & 0x10) != 0) {
340 				target_id = (target_id & 0x07) | 0x08;
341 			} else {
342 				target_id &= 0x07;
343 			}
344 			if (is885(dev))
345 				atp_writeb_io(dev, c, 0x10, 0x45);
346 			workreq = dev->id[c][target_id].curr_req;
347 #ifdef ED_DBGP
348 			scmd_printk(KERN_DEBUG, workreq, "CDB");
349 			for (l = 0; l < workreq->cmd_len; l++)
350 				printk(KERN_DEBUG " %x",workreq->cmnd[l]);
351 			printk("\n");
352 #endif
353 
354 			atp_writeb_io(dev, c, 0x0f, lun);
355 			atp_writeb_io(dev, c, 0x11, dev->id[c][target_id].devsp);
356 			adrcnt = dev->id[c][target_id].tran_len;
357 			k = dev->id[c][target_id].last_len;
358 
359 			atp_writeb_io(dev, c, 0x12, ((unsigned char *) &k)[2]);
360 			atp_writeb_io(dev, c, 0x13, ((unsigned char *) &k)[1]);
361 			atp_writeb_io(dev, c, 0x14, ((unsigned char *) &k)[0]);
362 #ifdef ED_DBGP
363 			printk("k %x, k[0] 0x%x k[1] 0x%x k[2] 0x%x\n", k,
364 			       atp_readb_io(dev, c, 0x14),
365 			       atp_readb_io(dev, c, 0x13),
366 			       atp_readb_io(dev, c, 0x12));
367 #endif
368 			/* Remap wide */
369 			j = target_id;
370 			if (target_id > 7) {
371 				j = (j & 0x07) | 0x40;
372 			}
373 			/* Add direction */
374 			j |= dev->id[c][target_id].dirct;
375 			atp_writeb_io(dev, c, 0x15, j);
376 			atp_writeb_io(dev, c, 0x16, 0x80);
377 
378 			/* enable 32 bit fifo transfer */
379 			if (is885(dev)) {
380 				i = atp_readb_pci(dev, c, 1) & 0xf3;
381 				//j=workreq->cmnd[0];
382 				if ((workreq->cmnd[0] == READ_6) ||
383 				    (workreq->cmnd[0] == READ_10) ||
384 				    (workreq->cmnd[0] == WRITE_6) ||
385 				    (workreq->cmnd[0] == WRITE_10)) {
386 				   i |= 0x0c;
387 				}
388 				atp_writeb_pci(dev, c, 1, i);
389 			} else if (is880(dev)) {
390 				if ((workreq->cmnd[0] == READ_6) ||
391 				    (workreq->cmnd[0] == READ_10) ||
392 				    (workreq->cmnd[0] == WRITE_6) ||
393 				    (workreq->cmnd[0] == WRITE_10))
394 					atp_writeb_base(dev, 0x3b,
395 							(atp_readb_base(dev, 0x3b) & 0x3f) | 0xc0);
396 				else
397 					atp_writeb_base(dev, 0x3b,
398 							atp_readb_base(dev, 0x3b) & 0x3f);
399 			} else {
400 				if ((workreq->cmnd[0] == READ_6) ||
401 				    (workreq->cmnd[0] == READ_10) ||
402 				    (workreq->cmnd[0] == WRITE_6) ||
403 				    (workreq->cmnd[0] == WRITE_10))
404 					atp_writeb_base(dev, 0x3a,
405 							(atp_readb_base(dev, 0x3a) & 0xf3) | 0x08);
406 				else
407 					atp_writeb_base(dev, 0x3a,
408 							atp_readb_base(dev, 0x3a) & 0xf3);
409 			}
410 			j = 0;
411 			id = 1;
412 			id = id << target_id;
413 			/*
414 			 *	Is this a wide device
415 			 */
416 			if ((id & dev->wide_id[c]) != 0) {
417 				j |= 0x01;
418 			}
419 			atp_writeb_io(dev, c, 0x1b, j);
420 			while ((atp_readb_io(dev, c, 0x1b) & 0x01) != j)
421 				atp_writeb_io(dev, c, 0x1b, j);
422 			if (dev->id[c][target_id].last_len == 0) {
423 				atp_writeb_io(dev, c, 0x18, 0x08);
424 				dev->in_int[c] = 0;
425 #ifdef ED_DBGP
426 				printk("dev->id[c][target_id].last_len = 0\n");
427 #endif
428 				return IRQ_HANDLED;
429 			}
430 #ifdef ED_DBGP
431 			printk("target_id = %d adrcnt = %d\n",target_id,adrcnt);
432 #endif
433 			prd = dev->id[c][target_id].prd_pos;
434 			while (adrcnt != 0) {
435 				id = ((unsigned short int *)prd)[2];
436 				if (id == 0) {
437 					k = 0x10000;
438 				} else {
439 					k = id;
440 				}
441 				if (k > adrcnt) {
442 					((unsigned short int *)prd)[2] =
443 						(unsigned short int)(k - adrcnt);
444 					((unsigned long *)prd)[0] += adrcnt;
445 					adrcnt = 0;
446 					dev->id[c][target_id].prd_pos = prd;
447 				} else {
448 					adrcnt -= k;
449 					dev->id[c][target_id].prdaddr += 0x08;
450 					prd += 0x08;
451 					if (adrcnt == 0) {
452 						dev->id[c][target_id].prd_pos = prd;
453 					}
454 				}
455 			}
456 			atp_writel_pci(dev, c, 0x04, dev->id[c][target_id].prdaddr);
457 #ifdef ED_DBGP
458 			printk("dev->id[%d][%d].prdaddr 0x%8x\n",
459 			       c, target_id, dev->id[c][target_id].prdaddr);
460 #endif
461 			if (!is885(dev)) {
462 				atp_writeb_pci(dev, c, 2, 0x06);
463 				atp_writeb_pci(dev, c, 2, 0x00);
464 			}
465 			/*
466 			 *	Check transfer direction
467 			 */
468 			if (dev->id[c][target_id].dirct != 0) {
469 				atp_writeb_io(dev, c, 0x18, 0x08);
470 				atp_writeb_pci(dev, c, 0, 0x01);
471 				dev->in_int[c] = 0;
472 #ifdef ED_DBGP
473 				printk("status 0x80 return dirct != 0\n");
474 #endif
475 				return IRQ_HANDLED;
476 			}
477 			atp_writeb_io(dev, c, 0x18, 0x08);
478 			atp_writeb_pci(dev, c, 0, 0x09);
479 			dev->in_int[c] = 0;
480 #ifdef ED_DBGP
481 			printk("status 0x80 return dirct = 0\n");
482 #endif
483 			return IRQ_HANDLED;
484 		}
485 
486 		/*
487 		 *	Current scsi request on this target
488 		 */
489 
490 		workreq = dev->id[c][target_id].curr_req;
491 
492 		if (i == 0x42 || i == 0x16) {
493 			if ((dev->last_cmd[c] & 0xf0) != 0x40) {
494 			   dev->last_cmd[c] = 0xff;
495 			}
496 			if (i == 0x16) {
497 				workreq->result = atp_readb_io(dev, c, 0x0f);
498 				if (((dev->r1f[c][target_id] & 0x10) != 0) && is885(dev)) {
499 					printk(KERN_WARNING "AEC67162 CRC ERROR !\n");
500 					workreq->result = SAM_STAT_CHECK_CONDITION;
501 				}
502 			} else
503 				workreq->result = SAM_STAT_CHECK_CONDITION;
504 
505 			if (is885(dev)) {
506 				j = atp_readb_base(dev, 0x29) | 0x01;
507 				atp_writeb_base(dev, 0x29, j);
508 			}
509 			/*
510 			 *	Complete the command
511 			 */
512 			scsi_dma_unmap(workreq);
513 
514 			spin_lock_irqsave(dev->host->host_lock, flags);
515 			(*workreq->scsi_done) (workreq);
516 #ifdef ED_DBGP
517 			   printk("workreq->scsi_done\n");
518 #endif
519 			/*
520 			 *	Clear it off the queue
521 			 */
522 			dev->id[c][target_id].curr_req = NULL;
523 			dev->working[c]--;
524 			spin_unlock_irqrestore(dev->host->host_lock, flags);
525 			/*
526 			 *      Take it back wide
527 			 */
528 			if (dev->wide_id[c] != 0) {
529 				atp_writeb_io(dev, c, 0x1b, 0x01);
530 				while ((atp_readb_io(dev, c, 0x1b) & 0x01) != 0x01)
531 					atp_writeb_io(dev, c, 0x1b, 0x01);
532 			}
533 			/*
534 			 *	If there is stuff to send and nothing going then send it
535 			 */
536 			spin_lock_irqsave(dev->host->host_lock, flags);
537 			if (((dev->last_cmd[c] != 0xff) ||
538 			     (dev->quhd[c] != dev->quend[c])) &&
539 			    (dev->in_snd[c] == 0)) {
540 #ifdef ED_DBGP
541 			   printk("Call sent_s870(scsi_done)\n");
542 #endif
543 			   send_s870(dev,c);
544 			}
545 			spin_unlock_irqrestore(dev->host->host_lock, flags);
546 			dev->in_int[c] = 0;
547 			return IRQ_HANDLED;
548 		}
549 		if ((dev->last_cmd[c] & 0xf0) != 0x40) {
550 		   dev->last_cmd[c] = 0xff;
551 		}
552 		if (i == 0x4f) {
553 			i = 0x89;
554 		}
555 		i &= 0x0f;
556 		if (i == 0x09) {
557 			atp_writel_pci(dev, c, 4, dev->id[c][target_id].prdaddr);
558 			atp_writeb_pci(dev, c, 2, 0x06);
559 			atp_writeb_pci(dev, c, 2, 0x00);
560 			atp_writeb_io(dev, c, 0x10, 0x41);
561 			if (is885(dev)) {
562 				k = dev->id[c][target_id].last_len;
563 				atp_writeb_io(dev, c, 0x12,
564 					      ((unsigned char *) (&k))[2]);
565 				atp_writeb_io(dev, c, 0x13,
566 					      ((unsigned char *) (&k))[1]);
567 				atp_writeb_io(dev, c, 0x14,
568 					      ((unsigned char *) (&k))[0]);
569 				dev->id[c][target_id].dirct = 0x00;
570 			} else {
571 				dev->id[c][target_id].dirct = 0x00;
572 			}
573 			atp_writeb_io(dev, c, 0x18, 0x08);
574 			atp_writeb_pci(dev, c, 0, 0x09);
575 			dev->in_int[c] = 0;
576 			return IRQ_HANDLED;
577 		}
578 		if (i == 0x08) {
579 			atp_writel_pci(dev, c, 4, dev->id[c][target_id].prdaddr);
580 			atp_writeb_pci(dev, c, 2, 0x06);
581 			atp_writeb_pci(dev, c, 2, 0x00);
582 			atp_writeb_io(dev, c, 0x10, 0x41);
583 			if (is885(dev)) {
584 				k = dev->id[c][target_id].last_len;
585 				atp_writeb_io(dev, c, 0x12,
586 					      ((unsigned char *) (&k))[2]);
587 				atp_writeb_io(dev, c, 0x13,
588 					      ((unsigned char *) (&k))[1]);
589 				atp_writeb_io(dev, c, 0x14,
590 					      ((unsigned char *) (&k))[0]);
591 			}
592 			atp_writeb_io(dev, c, 0x15,
593 				      atp_readb_io(dev, c, 0x15) | 0x20);
594 			dev->id[c][target_id].dirct = 0x20;
595 			atp_writeb_io(dev, c, 0x18, 0x08);
596 			atp_writeb_pci(dev, c, 0, 0x01);
597 			dev->in_int[c] = 0;
598 			return IRQ_HANDLED;
599 		}
600 		if (i == 0x0a)
601 			atp_writeb_io(dev, c, 0x10, 0x30);
602 		else
603 			atp_writeb_io(dev, c, 0x10, 0x46);
604 		dev->id[c][target_id].dirct = 0x00;
605 		atp_writeb_io(dev, c, 0x12, 0x00);
606 		atp_writeb_io(dev, c, 0x13, 0x00);
607 		atp_writeb_io(dev, c, 0x14, 0x00);
608 		atp_writeb_io(dev, c, 0x18, 0x08);
609 	}
610 	dev->in_int[c] = 0;
611 
612 	return IRQ_HANDLED;
613 }
614 /**
615  *	atp870u_queuecommand_lck -	Queue SCSI command
616  *	@req_p: request block
617  *	@done: completion function
618  *
619  *	Queue a command to the ATP queue. Called with the host lock held.
620  */
621 static int atp870u_queuecommand_lck(struct scsi_cmnd *req_p,
622 			 void (*done) (struct scsi_cmnd *))
623 {
624 	unsigned char c;
625 	unsigned int m;
626 	struct atp_unit *dev;
627 	struct Scsi_Host *host;
628 
629 	c = scmd_channel(req_p);
630 	req_p->sense_buffer[0]=0;
631 	scsi_set_resid(req_p, 0);
632 	if (scmd_channel(req_p) > 1) {
633 		req_p->result = DID_BAD_TARGET << 16;
634 		done(req_p);
635 #ifdef ED_DBGP
636 		printk("atp870u_queuecommand : req_p->device->channel > 1\n");
637 #endif
638 		return 0;
639 	}
640 
641 	host = req_p->device->host;
642 	dev = (struct atp_unit *)&host->hostdata;
643 
644 	m = 1;
645 	m = m << scmd_id(req_p);
646 
647 	/*
648 	 *      Fake a timeout for missing targets
649 	 */
650 
651 	if ((m & dev->active_id[c]) == 0) {
652 		req_p->result = DID_BAD_TARGET << 16;
653 		done(req_p);
654 		return 0;
655 	}
656 
657 	if (done) {
658 		req_p->scsi_done = done;
659 	} else {
660 #ifdef ED_DBGP
661 		printk( "atp870u_queuecommand: done can't be NULL\n");
662 #endif
663 		req_p->result = 0;
664 		done(req_p);
665 		return 0;
666 	}
667 
668 	/*
669 	 *	Count new command
670 	 */
671 	dev->quend[c]++;
672 	if (dev->quend[c] >= qcnt) {
673 		dev->quend[c] = 0;
674 	}
675 
676 	/*
677 	 *	Check queue state
678 	 */
679 	if (dev->quhd[c] == dev->quend[c]) {
680 		if (dev->quend[c] == 0) {
681 			dev->quend[c] = qcnt;
682 		}
683 #ifdef ED_DBGP
684 		printk("atp870u_queuecommand : dev->quhd[c] == dev->quend[c]\n");
685 #endif
686 		dev->quend[c]--;
687 		req_p->result = DID_BUS_BUSY << 16;
688 		done(req_p);
689 		return 0;
690 	}
691 	dev->quereq[c][dev->quend[c]] = req_p;
692 #ifdef ED_DBGP
693 	printk("dev->ioport[c] = %x atp_readb_io(dev, c, 0x1c) = %x "
694 	       "dev->in_int[%d] = %d dev->in_snd[%d] = %d\n",
695 	       dev->ioport[c], atp_readb_io(dev, c, 0x1c), c,
696 	       dev->in_int[c],c,dev->in_snd[c]);
697 #endif
698 	if ((atp_readb_io(dev, c, 0x1c) == 0) &&
699 	    (dev->in_int[c] == 0) &&
700 	    (dev->in_snd[c] == 0)) {
701 #ifdef ED_DBGP
702 		printk("Call sent_s870(atp870u_queuecommand)\n");
703 #endif
704 		send_s870(dev,c);
705 	}
706 #ifdef ED_DBGP
707 	printk("atp870u_queuecommand : exit\n");
708 #endif
709 	return 0;
710 }
711 
712 static DEF_SCSI_QCMD(atp870u_queuecommand)
713 
714 /*
715  *	send_s870	-	send a command to the controller
716  *
717  *	On entry there is work queued to be done. We move some of that work to the
718  *	controller itself.
719  *
720  *	Caller holds the host lock.
721  */
722 static void send_s870(struct atp_unit *dev, unsigned char c)
723 {
724 	struct scsi_cmnd *workreq = NULL;
725 	unsigned int i;//,k;
726 	unsigned char  j, target_id;
727 	unsigned char *prd;
728 	unsigned short int w;
729 	unsigned long l, bttl = 0;
730 	unsigned long  sg_count;
731 
732 	if (dev->in_snd[c] != 0) {
733 #ifdef ED_DBGP
734 		printk("cmnd in_snd\n");
735 #endif
736 		return;
737 	}
738 #ifdef ED_DBGP
739 	printk("Sent_s870 enter\n");
740 #endif
741 	dev->in_snd[c] = 1;
742 	if ((dev->last_cmd[c] != 0xff) && ((dev->last_cmd[c] & 0x40) != 0)) {
743 		dev->last_cmd[c] &= 0x0f;
744 		workreq = dev->id[c][dev->last_cmd[c]].curr_req;
745 		if (!workreq) {
746 			dev->last_cmd[c] = 0xff;
747 			if (dev->quhd[c] == dev->quend[c]) {
748 				dev->in_snd[c] = 0;
749 				return;
750 			}
751 		}
752 	}
753 	if (!workreq) {
754 		if ((dev->last_cmd[c] != 0xff) && (dev->working[c] != 0)) {
755 			dev->in_snd[c] = 0;
756 			return;
757 		}
758 		dev->working[c]++;
759 		j = dev->quhd[c];
760 		dev->quhd[c]++;
761 		if (dev->quhd[c] >= qcnt)
762 			dev->quhd[c] = 0;
763 		workreq = dev->quereq[c][dev->quhd[c]];
764 		if (dev->id[c][scmd_id(workreq)].curr_req != NULL) {
765 			dev->quhd[c] = j;
766 			dev->working[c]--;
767 			dev->in_snd[c] = 0;
768 			return;
769 		}
770 		dev->id[c][scmd_id(workreq)].curr_req = workreq;
771 		dev->last_cmd[c] = scmd_id(workreq);
772 	}
773 	if ((atp_readb_io(dev, c, 0x1f) & 0xb0) != 0 ||
774 	    atp_readb_io(dev, c, 0x1c) != 0) {
775 #ifdef ED_DBGP
776 		printk("Abort to Send\n");
777 #endif
778 		dev->last_cmd[c] |= 0x40;
779 		dev->in_snd[c] = 0;
780 		return;
781 	}
782 #ifdef ED_DBGP
783 	printk("OK to Send\n");
784 	scmd_printk(KERN_DEBUG, workreq, "CDB");
785 	for(i=0;i<workreq->cmd_len;i++) {
786 		printk(" %x",workreq->cmnd[i]);
787 	}
788 	printk("\n");
789 #endif
790 	l = scsi_bufflen(workreq);
791 
792 	if (is885(dev)) {
793 		j = atp_readb_base(dev, 0x29) & 0xfe;
794 		atp_writeb_base(dev, 0x29, j);
795 		dev->r1f[c][scmd_id(workreq)] = 0;
796 	}
797 
798 	if (workreq->cmnd[0] == READ_CAPACITY) {
799 		if (l > 8)
800 			l = 8;
801 	}
802 	if (workreq->cmnd[0] == TEST_UNIT_READY) {
803 		l = 0;
804 	}
805 
806 	j = 0;
807 	target_id = scmd_id(workreq);
808 
809 	/*
810 	 *	Wide ?
811 	 */
812 	w = 1;
813 	w = w << target_id;
814 	if ((w & dev->wide_id[c]) != 0) {
815 		j |= 0x01;
816 	}
817 	atp_writeb_io(dev, c, 0x1b, j);
818 	while ((atp_readb_io(dev, c, 0x1b) & 0x01) != j) {
819 		atp_writeb_pci(dev, c, 0x1b, j);
820 #ifdef ED_DBGP
821 		printk("send_s870 while loop 1\n");
822 #endif
823 	}
824 	/*
825 	 *	Write the command
826 	 */
827 
828 	atp_writeb_io(dev, c, 0x00, workreq->cmd_len);
829 	atp_writeb_io(dev, c, 0x01, 0x2c);
830 	if (is885(dev))
831 		atp_writeb_io(dev, c, 0x02, 0x7f);
832 	else
833 		atp_writeb_io(dev, c, 0x02, 0xcf);
834 	for (i = 0; i < workreq->cmd_len; i++)
835 		atp_writeb_io(dev, c, 0x03 + i, workreq->cmnd[i]);
836 	atp_writeb_io(dev, c, 0x0f, workreq->device->lun);
837 	/*
838 	 *	Write the target
839 	 */
840 	atp_writeb_io(dev, c, 0x11, dev->id[c][target_id].devsp);
841 #ifdef ED_DBGP
842 	printk("dev->id[%d][%d].devsp = %2x\n",c,target_id,
843 	       dev->id[c][target_id].devsp);
844 #endif
845 
846 	sg_count = scsi_dma_map(workreq);
847 	/*
848 	 *	Write transfer size
849 	 */
850 	atp_writeb_io(dev, c, 0x12, ((unsigned char *) (&l))[2]);
851 	atp_writeb_io(dev, c, 0x13, ((unsigned char *) (&l))[1]);
852 	atp_writeb_io(dev, c, 0x14, ((unsigned char *) (&l))[0]);
853 	j = target_id;
854 	dev->id[c][j].last_len = l;
855 	dev->id[c][j].tran_len = 0;
856 #ifdef ED_DBGP
857 	printk("dev->id[%2d][%2d].last_len = %d\n",c,j,dev->id[c][j].last_len);
858 #endif
859 	/*
860 	 *	Flip the wide bits
861 	 */
862 	if ((j & 0x08) != 0) {
863 		j = (j & 0x07) | 0x40;
864 	}
865 	/*
866 	 *	Check transfer direction
867 	 */
868 	if (workreq->sc_data_direction == DMA_TO_DEVICE)
869 		atp_writeb_io(dev, c, 0x15, j | 0x20);
870 	else
871 		atp_writeb_io(dev, c, 0x15, j);
872 	atp_writeb_io(dev, c, 0x16, atp_readb_io(dev, c, 0x16) | 0x80);
873 	atp_writeb_io(dev, c, 0x16, 0x80);
874 	dev->id[c][target_id].dirct = 0;
875 	if (l == 0) {
876 		if (atp_readb_io(dev, c, 0x1c) == 0) {
877 #ifdef ED_DBGP
878 			printk("change SCSI_CMD_REG 0x08\n");
879 #endif
880 			atp_writeb_io(dev, c, 0x18, 0x08);
881 		} else
882 			dev->last_cmd[c] |= 0x40;
883 		dev->in_snd[c] = 0;
884 		return;
885 	}
886 	prd = dev->id[c][target_id].prd_table;
887 	dev->id[c][target_id].prd_pos = prd;
888 
889 	/*
890 	 *	Now write the request list. Either as scatter/gather or as
891 	 *	a linear chain.
892 	 */
893 
894 	if (l) {
895 		struct scatterlist *sgpnt;
896 		i = 0;
897 		scsi_for_each_sg(workreq, sgpnt, sg_count, j) {
898 			bttl = sg_dma_address(sgpnt);
899 			l=sg_dma_len(sgpnt);
900 #ifdef ED_DBGP
901 			printk("1. bttl %x, l %x\n",bttl, l);
902 #endif
903 			while (l > 0x10000) {
904 				(((u16 *) (prd))[i + 3]) = 0x0000;
905 				(((u16 *) (prd))[i + 2]) = 0x0000;
906 				(((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);
907 				l -= 0x10000;
908 				bttl += 0x10000;
909 				i += 0x04;
910 			}
911 			(((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);
912 			(((u16 *) (prd))[i + 2]) = cpu_to_le16(l);
913 			(((u16 *) (prd))[i + 3]) = 0;
914 			i += 0x04;
915 		}
916 		(((u16 *) (prd))[i - 1]) = cpu_to_le16(0x8000);
917 #ifdef ED_DBGP
918 		printk("prd %4x %4x %4x %4x\n",
919 		       (((unsigned short int *)prd)[0]),
920 		       (((unsigned short int *)prd)[1]),
921 		       (((unsigned short int *)prd)[2]),
922 		       (((unsigned short int *)prd)[3]));
923 		printk("2. bttl %x, l %x\n",bttl, l);
924 #endif
925 	}
926 #ifdef ED_DBGP
927 	printk("send_s870: prdaddr_2 0x%8x target_id %d\n",
928 	       dev->id[c][target_id].prdaddr,target_id);
929 #endif
930 	dev->id[c][target_id].prdaddr = dev->id[c][target_id].prd_bus;
931 	atp_writel_pci(dev, c, 4, dev->id[c][target_id].prdaddr);
932 	atp_writeb_pci(dev, c, 2, 0x06);
933 	atp_writeb_pci(dev, c, 2, 0x00);
934 	if (is885(dev)) {
935 		j = atp_readb_pci(dev, c, 1) & 0xf3;
936 		if ((workreq->cmnd[0] == READ_6) ||
937 		    (workreq->cmnd[0] == READ_10) ||
938 		    (workreq->cmnd[0] == WRITE_6) ||
939 		    (workreq->cmnd[0] == WRITE_10)) {
940 			j |= 0x0c;
941 		}
942 		atp_writeb_pci(dev, c, 1, j);
943 	} else if (is880(dev)) {
944 		if ((workreq->cmnd[0] == READ_6) ||
945 		    (workreq->cmnd[0] == READ_10) ||
946 		    (workreq->cmnd[0] == WRITE_6) ||
947 		    (workreq->cmnd[0] == WRITE_10))
948 			atp_writeb_base(dev, 0x3b,
949 					(atp_readb_base(dev, 0x3b) & 0x3f) | 0xc0);
950 		else
951 			atp_writeb_base(dev, 0x3b,
952 					atp_readb_base(dev, 0x3b) & 0x3f);
953 	} else {
954 		if ((workreq->cmnd[0] == READ_6) ||
955 		    (workreq->cmnd[0] == READ_10) ||
956 		    (workreq->cmnd[0] == WRITE_6) ||
957 		    (workreq->cmnd[0] == WRITE_10))
958 			atp_writeb_base(dev, 0x3a,
959 					(atp_readb_base(dev, 0x3a) & 0xf3) | 0x08);
960 		else
961 			atp_writeb_base(dev, 0x3a,
962 					atp_readb_base(dev, 0x3a) & 0xf3);
963 	}
964 
965 	if(workreq->sc_data_direction == DMA_TO_DEVICE) {
966 		dev->id[c][target_id].dirct = 0x20;
967 		if (atp_readb_io(dev, c, 0x1c) == 0) {
968 			atp_writeb_io(dev, c, 0x18, 0x08);
969 			atp_writeb_pci(dev, c, 0, 0x01);
970 #ifdef ED_DBGP
971 		printk( "start DMA(to target)\n");
972 #endif
973 		} else {
974 			dev->last_cmd[c] |= 0x40;
975 		}
976 		dev->in_snd[c] = 0;
977 		return;
978 	}
979 	if (atp_readb_io(dev, c, 0x1c) == 0) {
980 		atp_writeb_io(dev, c, 0x18, 0x08);
981 		atp_writeb_pci(dev, c, 0, 0x09);
982 #ifdef ED_DBGP
983 		printk( "start DMA(to host)\n");
984 #endif
985 	} else {
986 		dev->last_cmd[c] |= 0x40;
987 	}
988 	dev->in_snd[c] = 0;
989 	return;
990 
991 }
992 
993 static unsigned char fun_scam(struct atp_unit *dev, unsigned short int *val)
994 {
995 	unsigned short int i, k;
996 	unsigned char j;
997 
998 	atp_writew_io(dev, 0, 0x1c, *val);
999 	for (i = 0; i < 10; i++) {	/* stable >= bus settle delay(400 ns)  */
1000 		k = atp_readw_io(dev, 0, 0x1c);
1001 		j = (unsigned char) (k >> 8);
1002 		if ((k & 0x8000) != 0)	/* DB7 all release?    */
1003 			i = 0;
1004 	}
1005 	*val |= 0x4000;		/* assert DB6           */
1006 	atp_writew_io(dev, 0, 0x1c, *val);
1007 	*val &= 0xdfff;		/* assert DB5           */
1008 	atp_writew_io(dev, 0, 0x1c, *val);
1009 	for (i = 0; i < 10; i++) {	/* stable >= bus settle delay(400 ns) */
1010 		if ((atp_readw_io(dev, 0, 0x1c) & 0x2000) != 0)	/* DB5 all release?       */
1011 			i = 0;
1012 	}
1013 	*val |= 0x8000;		/* no DB4-0, assert DB7    */
1014 	*val &= 0xe0ff;
1015 	atp_writew_io(dev, 0, 0x1c, *val);
1016 	*val &= 0xbfff;		/* release DB6             */
1017 	atp_writew_io(dev, 0, 0x1c, *val);
1018 	for (i = 0; i < 10; i++) {	/* stable >= bus settle delay(400 ns)  */
1019 		if ((atp_readw_io(dev, 0, 0x1c) & 0x4000) != 0)	/* DB6 all release?  */
1020 			i = 0;
1021 	}
1022 
1023 	return j;
1024 }
1025 
1026 static void tscam(struct Scsi_Host *host, bool wide_chip, u8 scam_on)
1027 {
1028 
1029 	unsigned char i, j, k;
1030 	unsigned long n;
1031 	unsigned short int m, assignid_map, val;
1032 	unsigned char mbuf[33], quintet[2];
1033 	struct atp_unit *dev = (struct atp_unit *)&host->hostdata;
1034 	static unsigned char g2q_tab[8] = {
1035 		0x38, 0x31, 0x32, 0x2b, 0x34, 0x2d, 0x2e, 0x27
1036 	};
1037 
1038 /*  I can't believe we need this before we've even done anything.  Remove it
1039  *  and see if anyone bitches.
1040 	for (i = 0; i < 0x10; i++) {
1041 		udelay(0xffff);
1042 	}
1043  */
1044 
1045 	atp_writeb_io(dev, 0, 1, 0x08);
1046 	atp_writeb_io(dev, 0, 2, 0x7f);
1047 	atp_writeb_io(dev, 0, 0x11, 0x20);
1048 
1049 	if ((scam_on & 0x40) == 0) {
1050 		return;
1051 	}
1052 	m = 1;
1053 	m <<= dev->host_id[0];
1054 	j = 16;
1055 	if (!wide_chip) {
1056 		m |= 0xff00;
1057 		j = 8;
1058 	}
1059 	assignid_map = m;
1060 	atp_writeb_io(dev, 0, 0x02, 0x02);	/* 2*2=4ms,3EH 2/32*3E=3.9ms */
1061 	atp_writeb_io(dev, 0, 0x03, 0);
1062 	atp_writeb_io(dev, 0, 0x04, 0);
1063 	atp_writeb_io(dev, 0, 0x05, 0);
1064 	atp_writeb_io(dev, 0, 0x06, 0);
1065 	atp_writeb_io(dev, 0, 0x07, 0);
1066 	atp_writeb_io(dev, 0, 0x08, 0);
1067 
1068 	for (i = 0; i < j; i++) {
1069 		m = 1;
1070 		m = m << i;
1071 		if ((m & assignid_map) != 0) {
1072 			continue;
1073 		}
1074 		atp_writeb_io(dev, 0, 0x0f, 0);
1075 		atp_writeb_io(dev, 0, 0x12, 0);
1076 		atp_writeb_io(dev, 0, 0x13, 0);
1077 		atp_writeb_io(dev, 0, 0x14, 0);
1078 		if (i > 7) {
1079 			k = (i & 0x07) | 0x40;
1080 		} else {
1081 			k = i;
1082 		}
1083 		atp_writeb_io(dev, 0, 0x15, k);
1084 		if (wide_chip)
1085 			atp_writeb_io(dev, 0, 0x1b, 0x01);
1086 		else
1087 			atp_writeb_io(dev, 0, 0x1b, 0x00);
1088 		do {
1089 			atp_writeb_io(dev, 0, 0x18, 0x09);
1090 
1091 			while ((atp_readb_io(dev, 0, 0x1f) & 0x80) == 0x00)
1092 				cpu_relax();
1093 			k = atp_readb_io(dev, 0, 0x17);
1094 			if ((k == 0x85) || (k == 0x42))
1095 				break;
1096 			if (k != 0x16)
1097 				atp_writeb_io(dev, 0, 0x10, 0x41);
1098 		} while (k != 0x16);
1099 		if ((k == 0x85) || (k == 0x42))
1100 			continue;
1101 		assignid_map |= m;
1102 
1103 	}
1104 	atp_writeb_io(dev, 0, 0x02, 0x7f);
1105 	atp_writeb_io(dev, 0, 0x1b, 0x02);
1106 
1107 	udelay(2);
1108 
1109 	val = 0x0080;		/* bsy  */
1110 	atp_writew_io(dev, 0, 0x1c, val);
1111 	val |= 0x0040;		/* sel  */
1112 	atp_writew_io(dev, 0, 0x1c, val);
1113 	val |= 0x0004;		/* msg  */
1114 	atp_writew_io(dev, 0, 0x1c, val);
1115 	udelay(2);		/* 2 deskew delay(45ns*2=90ns) */
1116 	val &= 0x007f;		/* no bsy  */
1117 	atp_writew_io(dev, 0, 0x1c, val);
1118 	msleep(128);
1119 	val &= 0x00fb;		/* after 1ms no msg */
1120 	atp_writew_io(dev, 0, 0x1c, val);
1121 	while ((atp_readb_io(dev, 0, 0x1c) & 0x04) != 0)
1122 		;
1123 	udelay(2);
1124 	udelay(100);
1125 	for (n = 0; n < 0x30000; n++)
1126 		if ((atp_readb_io(dev, 0, 0x1c) & 0x80) != 0)	/* bsy ? */
1127 			break;
1128 	if (n < 0x30000)
1129 		for (n = 0; n < 0x30000; n++)
1130 			if ((atp_readb_io(dev, 0, 0x1c) & 0x81) == 0x0081) {
1131 				udelay(2);
1132 				val |= 0x8003;		/* io,cd,db7  */
1133 				atp_writew_io(dev, 0, 0x1c, val);
1134 				udelay(2);
1135 				val &= 0x00bf;		/* no sel     */
1136 				atp_writew_io(dev, 0, 0x1c, val);
1137 				udelay(2);
1138 				break;
1139 			}
1140 	while (1) {
1141 	/*
1142 	 * The funny division into multiple delays is to accomodate
1143 	 * arches like ARM where udelay() multiplies its argument by
1144 	 * a large number to initialize a loop counter.  To avoid
1145 	 * overflow, the maximum supported udelay is 2000 microseconds.
1146 	 *
1147 	 * XXX it would be more polite to find a way to use msleep()
1148 	 */
1149 	mdelay(2);
1150 	udelay(48);
1151 	if ((atp_readb_io(dev, 0, 0x1c) & 0x80) == 0x00) {	/* bsy ? */
1152 		atp_writew_io(dev, 0, 0x1c, 0);
1153 		atp_writeb_io(dev, 0, 0x1b, 0);
1154 		atp_writeb_io(dev, 0, 0x15, 0);
1155 		atp_writeb_io(dev, 0, 0x18, 0x09);
1156 		while ((atp_readb_io(dev, 0, 0x1f) & 0x80) == 0)
1157 			cpu_relax();
1158 		atp_readb_io(dev, 0, 0x17);
1159 		return;
1160 	}
1161 	val &= 0x00ff;		/* synchronization  */
1162 	val |= 0x3f00;
1163 	fun_scam(dev, &val);
1164 	udelay(2);
1165 	val &= 0x00ff;		/* isolation        */
1166 	val |= 0x2000;
1167 	fun_scam(dev, &val);
1168 	udelay(2);
1169 	i = 8;
1170 	j = 0;
1171 
1172 	while (1) {
1173 		if ((atp_readw_io(dev, 0, 0x1c) & 0x2000) == 0)
1174 			continue;
1175 		udelay(2);
1176 		val &= 0x00ff;		/* get ID_STRING */
1177 		val |= 0x2000;
1178 		k = fun_scam(dev, &val);
1179 		if ((k & 0x03) == 0)
1180 			break;
1181 		mbuf[j] <<= 0x01;
1182 		mbuf[j] &= 0xfe;
1183 		if ((k & 0x02) != 0)
1184 			mbuf[j] |= 0x01;
1185 		i--;
1186 		if (i > 0)
1187 			continue;
1188 		j++;
1189 		i = 8;
1190 	}
1191 
1192 	/* isolation complete..  */
1193 /*    mbuf[32]=0;
1194 	printk(" \n%x %x %x %s\n ",assignid_map,mbuf[0],mbuf[1],&mbuf[2]); */
1195 	i = 15;
1196 	j = mbuf[0];
1197 	if ((j & 0x20) != 0) {	/* bit5=1:ID up to 7      */
1198 		i = 7;
1199 	}
1200 	if ((j & 0x06) != 0) {	/* IDvalid?             */
1201 		k = mbuf[1];
1202 		while (1) {
1203 			m = 1;
1204 			m <<= k;
1205 			if ((m & assignid_map) == 0)
1206 				break;
1207 			if (k > 0)
1208 				k--;
1209 			else
1210 				break;
1211 		}
1212 	}
1213 	if ((m & assignid_map) != 0) {	/* srch from max acceptable ID#  */
1214 		k = i;			/* max acceptable ID#            */
1215 		while (1) {
1216 			m = 1;
1217 			m <<= k;
1218 			if ((m & assignid_map) == 0)
1219 				break;
1220 			if (k > 0)
1221 				k--;
1222 			else
1223 				break;
1224 		}
1225 	}
1226 	/* k=binID#,       */
1227 	assignid_map |= m;
1228 	if (k < 8) {
1229 		quintet[0] = 0x38;	/* 1st dft ID<8    */
1230 	} else {
1231 		quintet[0] = 0x31;	/* 1st  ID>=8      */
1232 	}
1233 	k &= 0x07;
1234 	quintet[1] = g2q_tab[k];
1235 
1236 	val &= 0x00ff;		/* AssignID 1stQuintet,AH=001xxxxx  */
1237 	m = quintet[0] << 8;
1238 	val |= m;
1239 	fun_scam(dev, &val);
1240 	val &= 0x00ff;		/* AssignID 2ndQuintet,AH=001xxxxx */
1241 	m = quintet[1] << 8;
1242 	val |= m;
1243 	fun_scam(dev, &val);
1244 
1245 	}
1246 }
1247 
1248 static void atp870u_free_tables(struct Scsi_Host *host)
1249 {
1250 	struct atp_unit *atp_dev = (struct atp_unit *)&host->hostdata;
1251 	int j, k;
1252 	for (j=0; j < 2; j++) {
1253 		for (k = 0; k < 16; k++) {
1254 			if (!atp_dev->id[j][k].prd_table)
1255 				continue;
1256 			dma_free_coherent(&atp_dev->pdev->dev, 1024,
1257 					  atp_dev->id[j][k].prd_table,
1258 					  atp_dev->id[j][k].prd_bus);
1259 			atp_dev->id[j][k].prd_table = NULL;
1260 		}
1261 	}
1262 }
1263 
1264 static int atp870u_init_tables(struct Scsi_Host *host)
1265 {
1266 	struct atp_unit *atp_dev = (struct atp_unit *)&host->hostdata;
1267 	int c,k;
1268 	for(c=0;c < 2;c++) {
1269 		for(k=0;k<16;k++) {
1270 			atp_dev->id[c][k].prd_table =
1271 				dma_alloc_coherent(&atp_dev->pdev->dev, 1024,
1272 						   &(atp_dev->id[c][k].prd_bus),
1273 						   GFP_KERNEL);
1274 			if (!atp_dev->id[c][k].prd_table) {
1275 				printk("atp870u_init_tables fail\n");
1276 				atp870u_free_tables(host);
1277 				return -ENOMEM;
1278 			}
1279 			atp_dev->id[c][k].prdaddr = atp_dev->id[c][k].prd_bus;
1280 			atp_dev->id[c][k].devsp=0x20;
1281 			atp_dev->id[c][k].devtype = 0x7f;
1282 			atp_dev->id[c][k].curr_req = NULL;
1283 		}
1284 
1285 		atp_dev->active_id[c] = 0;
1286 		atp_dev->wide_id[c] = 0;
1287 		atp_dev->host_id[c] = 0x07;
1288 		atp_dev->quhd[c] = 0;
1289 		atp_dev->quend[c] = 0;
1290 		atp_dev->last_cmd[c] = 0xff;
1291 		atp_dev->in_snd[c] = 0;
1292 		atp_dev->in_int[c] = 0;
1293 
1294 		for (k = 0; k < qcnt; k++) {
1295 			atp_dev->quereq[c][k] = NULL;
1296 		}
1297 		for (k = 0; k < 16; k++) {
1298 			   atp_dev->id[c][k].curr_req = NULL;
1299 			   atp_dev->sp[c][k] = 0x04;
1300 		}
1301 	}
1302 	return 0;
1303 }
1304 
1305 static void atp_set_host_id(struct atp_unit *atp, u8 c, u8 host_id)
1306 {
1307 	atp_writeb_io(atp, c, 0, host_id | 0x08);
1308 	atp_writeb_io(atp, c, 0x18, 0);
1309 	while ((atp_readb_io(atp, c, 0x1f) & 0x80) == 0)
1310 		mdelay(1);
1311 	atp_readb_io(atp, c, 0x17);
1312 	atp_writeb_io(atp, c, 1, 8);
1313 	atp_writeb_io(atp, c, 2, 0x7f);
1314 	atp_writeb_io(atp, c, 0x11, 0x20);
1315 }
1316 
1317 static void atp870_init(struct Scsi_Host *shpnt)
1318 {
1319 	struct atp_unit *atpdev = shost_priv(shpnt);
1320 	struct pci_dev *pdev = atpdev->pdev;
1321 	unsigned char k, host_id;
1322 	u8 scam_on;
1323 	bool wide_chip =
1324 		(pdev->device == PCI_DEVICE_ID_ARTOP_AEC7610 &&
1325 		 pdev->revision == 4) ||
1326 		(pdev->device == PCI_DEVICE_ID_ARTOP_AEC7612UW) ||
1327 		(pdev->device == PCI_DEVICE_ID_ARTOP_AEC7612SUW);
1328 
1329 	pci_read_config_byte(pdev, 0x49, &host_id);
1330 
1331 	dev_info(&pdev->dev, "ACARD AEC-671X PCI Ultra/W SCSI-2/3 "
1332 		 "Host Adapter: IO:%lx, IRQ:%d.\n",
1333 		 shpnt->io_port, shpnt->irq);
1334 
1335 	atpdev->ioport[0] = shpnt->io_port;
1336 	atpdev->pciport[0] = shpnt->io_port + 0x20;
1337 	host_id &= 0x07;
1338 	atpdev->host_id[0] = host_id;
1339 	scam_on = atp_readb_pci(atpdev, 0, 2);
1340 	atpdev->global_map[0] = atp_readb_base(atpdev, 0x2d);
1341 	atpdev->ultra_map[0] = atp_readw_base(atpdev, 0x2e);
1342 
1343 	if (atpdev->ultra_map[0] == 0) {
1344 		scam_on = 0x00;
1345 		atpdev->global_map[0] = 0x20;
1346 		atpdev->ultra_map[0] = 0xffff;
1347 	}
1348 
1349 	if (pdev->revision > 0x07)	/* check if atp876 chip */
1350 		atp_writeb_base(atpdev, 0x3e, 0x00); /* enable terminator */
1351 
1352 	k = (atp_readb_base(atpdev, 0x3a) & 0xf3) | 0x10;
1353 	atp_writeb_base(atpdev, 0x3a, k);
1354 	atp_writeb_base(atpdev, 0x3a, k & 0xdf);
1355 	msleep(32);
1356 	atp_writeb_base(atpdev, 0x3a, k);
1357 	msleep(32);
1358 	atp_set_host_id(atpdev, 0, host_id);
1359 
1360 	tscam(shpnt, wide_chip, scam_on);
1361 	atp_writeb_base(atpdev, 0x3a, atp_readb_base(atpdev, 0x3a) | 0x10);
1362 	atp_is(atpdev, 0, wide_chip, 0);
1363 	atp_writeb_base(atpdev, 0x3a, atp_readb_base(atpdev, 0x3a) & 0xef);
1364 	atp_writeb_base(atpdev, 0x3b, atp_readb_base(atpdev, 0x3b) | 0x20);
1365 	shpnt->max_id = wide_chip ? 16 : 8;
1366 	shpnt->this_id = host_id;
1367 }
1368 
1369 static void atp880_init(struct Scsi_Host *shpnt)
1370 {
1371 	struct atp_unit *atpdev = shost_priv(shpnt);
1372 	struct pci_dev *pdev = atpdev->pdev;
1373 	unsigned char k, m, host_id;
1374 	unsigned int n;
1375 
1376 	pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
1377 
1378 	atpdev->ioport[0] = shpnt->io_port + 0x40;
1379 	atpdev->pciport[0] = shpnt->io_port + 0x28;
1380 
1381 	host_id = atp_readb_base(atpdev, 0x39) >> 4;
1382 
1383 	dev_info(&pdev->dev, "ACARD AEC-67160 PCI Ultra3 LVD "
1384 		 "Host Adapter: IO:%lx, IRQ:%d.\n",
1385 		 shpnt->io_port, shpnt->irq);
1386 	atpdev->host_id[0] = host_id;
1387 
1388 	atpdev->global_map[0] = atp_readb_base(atpdev, 0x35);
1389 	atpdev->ultra_map[0] = atp_readw_base(atpdev, 0x3c);
1390 
1391 	n = 0x3f09;
1392 	while (n < 0x4000) {
1393 		m = 0;
1394 		atp_writew_base(atpdev, 0x34, n);
1395 		n += 0x0002;
1396 		if (atp_readb_base(atpdev, 0x30) == 0xff)
1397 			break;
1398 
1399 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x30);
1400 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x31);
1401 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x32);
1402 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x33);
1403 		atp_writew_base(atpdev, 0x34, n);
1404 		n += 0x0002;
1405 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x30);
1406 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x31);
1407 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x32);
1408 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x33);
1409 		atp_writew_base(atpdev, 0x34, n);
1410 		n += 0x0002;
1411 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x30);
1412 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x31);
1413 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x32);
1414 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x33);
1415 		atp_writew_base(atpdev, 0x34, n);
1416 		n += 0x0002;
1417 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x30);
1418 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x31);
1419 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x32);
1420 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x33);
1421 		n += 0x0018;
1422 	}
1423 	atp_writew_base(atpdev, 0x34, 0);
1424 	atpdev->ultra_map[0] = 0;
1425 	atpdev->async[0] = 0;
1426 	for (k = 0; k < 16; k++) {
1427 		n = 1 << k;
1428 		if (atpdev->sp[0][k] > 1)
1429 			atpdev->ultra_map[0] |= n;
1430 		else
1431 			if (atpdev->sp[0][k] == 0)
1432 				atpdev->async[0] |= n;
1433 	}
1434 	atpdev->async[0] = ~(atpdev->async[0]);
1435 	atp_writeb_base(atpdev, 0x35, atpdev->global_map[0]);
1436 
1437 	k = atp_readb_base(atpdev, 0x38) & 0x80;
1438 	atp_writeb_base(atpdev, 0x38, k);
1439 	atp_writeb_base(atpdev, 0x3b, 0x20);
1440 	msleep(32);
1441 	atp_writeb_base(atpdev, 0x3b, 0);
1442 	msleep(32);
1443 	atp_readb_io(atpdev, 0, 0x1b);
1444 	atp_readb_io(atpdev, 0, 0x17);
1445 
1446 	atp_set_host_id(atpdev, 0, host_id);
1447 
1448 	tscam(shpnt, true, atp_readb_base(atpdev, 0x22));
1449 	atp_is(atpdev, 0, true, atp_readb_base(atpdev, 0x3f) & 0x40);
1450 	atp_writeb_base(atpdev, 0x38, 0xb0);
1451 	shpnt->max_id = 16;
1452 	shpnt->this_id = host_id;
1453 }
1454 
1455 static void atp885_init(struct Scsi_Host *shpnt)
1456 {
1457 	struct atp_unit *atpdev = shost_priv(shpnt);
1458 	struct pci_dev *pdev = atpdev->pdev;
1459 	unsigned char k, m, c;
1460 	unsigned int n;
1461 	unsigned char setupdata[2][16];
1462 
1463 	dev_info(&pdev->dev, "ACARD AEC-67162 PCI Ultra3 LVD "
1464 		 "Host Adapter: IO:%lx, IRQ:%d.\n",
1465 		 shpnt->io_port, shpnt->irq);
1466 
1467 	atpdev->ioport[0] = shpnt->io_port + 0x80;
1468 	atpdev->ioport[1] = shpnt->io_port + 0xc0;
1469 	atpdev->pciport[0] = shpnt->io_port + 0x40;
1470 	atpdev->pciport[1] = shpnt->io_port + 0x50;
1471 
1472 	c = atp_readb_base(atpdev, 0x29);
1473 	atp_writeb_base(atpdev, 0x29, c | 0x04);
1474 
1475 	n = 0x1f80;
1476 	while (n < 0x2000) {
1477 		atp_writew_base(atpdev, 0x3c, n);
1478 		if (atp_readl_base(atpdev, 0x38) == 0xffffffff)
1479 			break;
1480 		for (m = 0; m < 2; m++) {
1481 			atpdev->global_map[m] = 0;
1482 			for (k = 0; k < 4; k++) {
1483 				atp_writew_base(atpdev, 0x3c, n++);
1484 				((u32 *)&setupdata[m][0])[k] =
1485 					atp_readl_base(atpdev, 0x38);
1486 			}
1487 			for (k = 0; k < 4; k++) {
1488 				atp_writew_base(atpdev, 0x3c, n++);
1489 				((u32 *)&atpdev->sp[m][0])[k] =
1490 					atp_readl_base(atpdev, 0x38);
1491 			}
1492 			n += 8;
1493 		}
1494 	}
1495 	c = atp_readb_base(atpdev, 0x29);
1496 	atp_writeb_base(atpdev, 0x29, c & 0xfb);
1497 	for (c = 0; c < 2; c++) {
1498 		atpdev->ultra_map[c] = 0;
1499 		atpdev->async[c] = 0;
1500 		for (k = 0; k < 16; k++) {
1501 			n = 1 << k;
1502 			if (atpdev->sp[c][k] > 1)
1503 				atpdev->ultra_map[c] |= n;
1504 			else
1505 				if (atpdev->sp[c][k] == 0)
1506 					atpdev->async[c] |= n;
1507 		}
1508 		atpdev->async[c] = ~(atpdev->async[c]);
1509 
1510 		if (atpdev->global_map[c] == 0) {
1511 			k = setupdata[c][1];
1512 			if ((k & 0x40) != 0)
1513 				atpdev->global_map[c] |= 0x20;
1514 			k &= 0x07;
1515 			atpdev->global_map[c] |= k;
1516 			if ((setupdata[c][2] & 0x04) != 0)
1517 				atpdev->global_map[c] |= 0x08;
1518 			atpdev->host_id[c] = setupdata[c][0] & 0x07;
1519 		}
1520 	}
1521 
1522 	k = atp_readb_base(atpdev, 0x28) & 0x8f;
1523 	k |= 0x10;
1524 	atp_writeb_base(atpdev, 0x28, k);
1525 	atp_writeb_pci(atpdev, 0, 1, 0x80);
1526 	atp_writeb_pci(atpdev, 1, 1, 0x80);
1527 	msleep(100);
1528 	atp_writeb_pci(atpdev, 0, 1, 0);
1529 	atp_writeb_pci(atpdev, 1, 1, 0);
1530 	msleep(1000);
1531 	atp_readb_io(atpdev, 0, 0x1b);
1532 	atp_readb_io(atpdev, 0, 0x17);
1533 	atp_readb_io(atpdev, 1, 0x1b);
1534 	atp_readb_io(atpdev, 1, 0x17);
1535 
1536 	k = atpdev->host_id[0];
1537 	if (k > 7)
1538 		k = (k & 0x07) | 0x40;
1539 	atp_set_host_id(atpdev, 0, k);
1540 
1541 	k = atpdev->host_id[1];
1542 	if (k > 7)
1543 		k = (k & 0x07) | 0x40;
1544 	atp_set_host_id(atpdev, 1, k);
1545 
1546 	msleep(600); /* this delay used to be called tscam_885() */
1547 	dev_info(&pdev->dev, "Scanning Channel A SCSI Device ...\n");
1548 	atp_is(atpdev, 0, true, atp_readb_io(atpdev, 0, 0x1b) >> 7);
1549 	atp_writeb_io(atpdev, 0, 0x16, 0x80);
1550 	dev_info(&pdev->dev, "Scanning Channel B SCSI Device ...\n");
1551 	atp_is(atpdev, 1, true, atp_readb_io(atpdev, 1, 0x1b) >> 7);
1552 	atp_writeb_io(atpdev, 1, 0x16, 0x80);
1553 	k = atp_readb_base(atpdev, 0x28) & 0xcf;
1554 	k |= 0xc0;
1555 	atp_writeb_base(atpdev, 0x28, k);
1556 	k = atp_readb_base(atpdev, 0x1f) | 0x80;
1557 	atp_writeb_base(atpdev, 0x1f, k);
1558 	k = atp_readb_base(atpdev, 0x29) | 0x01;
1559 	atp_writeb_base(atpdev, 0x29, k);
1560 	shpnt->max_id = 16;
1561 	shpnt->max_lun = (atpdev->global_map[0] & 0x07) + 1;
1562 	shpnt->max_channel = 1;
1563 	shpnt->this_id = atpdev->host_id[0];
1564 }
1565 
1566 /* return non-zero on detection */
1567 static int atp870u_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1568 {
1569 	struct Scsi_Host *shpnt = NULL;
1570 	struct atp_unit *atpdev;
1571 	int err;
1572 
1573 	if (ent->device == PCI_DEVICE_ID_ARTOP_AEC7610 && pdev->revision < 2) {
1574 		dev_err(&pdev->dev, "ATP850S chips (AEC6710L/F cards) are not supported.\n");
1575 		return -ENODEV;
1576 	}
1577 
1578 	err = pci_enable_device(pdev);
1579 	if (err)
1580 		goto fail;
1581 
1582 	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
1583 		printk(KERN_ERR "atp870u: DMA mask required but not available.\n");
1584 		err = -EIO;
1585 		goto disable_device;
1586 	}
1587 
1588 	err = pci_request_regions(pdev, "atp870u");
1589 	if (err)
1590 		goto disable_device;
1591 	pci_set_master(pdev);
1592 
1593 	err = -ENOMEM;
1594 	shpnt = scsi_host_alloc(&atp870u_template, sizeof(struct atp_unit));
1595 	if (!shpnt)
1596 		goto release_region;
1597 
1598 	atpdev = shost_priv(shpnt);
1599 
1600 	atpdev->host = shpnt;
1601 	atpdev->pdev = pdev;
1602 	pci_set_drvdata(pdev, atpdev);
1603 
1604 	shpnt->io_port = pci_resource_start(pdev, 0);
1605 	shpnt->io_port &= 0xfffffff8;
1606 	shpnt->n_io_port = pci_resource_len(pdev, 0);
1607 	atpdev->baseport = shpnt->io_port;
1608 	shpnt->unique_id = shpnt->io_port;
1609 	shpnt->irq = pdev->irq;
1610 
1611 	err = atp870u_init_tables(shpnt);
1612 	if (err) {
1613 		dev_err(&pdev->dev, "Unable to allocate tables for Acard controller\n");
1614 		goto unregister;
1615 	}
1616 
1617 	if (is880(atpdev))
1618 		atp880_init(shpnt);
1619 	else if (is885(atpdev))
1620 		atp885_init(shpnt);
1621 	else
1622 		atp870_init(shpnt);
1623 
1624 	err = request_irq(shpnt->irq, atp870u_intr_handle, IRQF_SHARED, "atp870u", shpnt);
1625 	if (err) {
1626 		dev_err(&pdev->dev, "Unable to allocate IRQ %d.\n", shpnt->irq);
1627 		goto free_tables;
1628 	}
1629 
1630 	err = scsi_add_host(shpnt, &pdev->dev);
1631 	if (err)
1632 		goto scsi_add_fail;
1633 	scsi_scan_host(shpnt);
1634 
1635 	return 0;
1636 
1637 scsi_add_fail:
1638 	free_irq(shpnt->irq, shpnt);
1639 free_tables:
1640 	atp870u_free_tables(shpnt);
1641 unregister:
1642 	scsi_host_put(shpnt);
1643 release_region:
1644 	pci_release_regions(pdev);
1645 disable_device:
1646 	pci_disable_device(pdev);
1647 fail:
1648 	return err;
1649 }
1650 
1651 /* The abort command does not leave the device in a clean state where
1652    it is available to be used again.  Until this gets worked out, we will
1653    leave it commented out.  */
1654 
1655 static int atp870u_abort(struct scsi_cmnd * SCpnt)
1656 {
1657 	unsigned char  j, k, c;
1658 	struct scsi_cmnd *workrequ;
1659 	struct atp_unit *dev;
1660 	struct Scsi_Host *host;
1661 	host = SCpnt->device->host;
1662 
1663 	dev = (struct atp_unit *)&host->hostdata;
1664 	c = scmd_channel(SCpnt);
1665 	printk(" atp870u: abort Channel = %x \n", c);
1666 	printk("working=%x last_cmd=%x ", dev->working[c], dev->last_cmd[c]);
1667 	printk(" quhdu=%x quendu=%x ", dev->quhd[c], dev->quend[c]);
1668 	for (j = 0; j < 0x18; j++) {
1669 		printk(" r%2x=%2x", j, atp_readb_io(dev, c, j));
1670 	}
1671 	printk(" r1c=%2x", atp_readb_io(dev, c, 0x1c));
1672 	printk(" r1f=%2x in_snd=%2x ", atp_readb_io(dev, c, 0x1f), dev->in_snd[c]);
1673 	printk(" d00=%2x", atp_readb_pci(dev, c, 0x00));
1674 	printk(" d02=%2x", atp_readb_pci(dev, c, 0x02));
1675 	for(j=0;j<16;j++) {
1676 	   if (dev->id[c][j].curr_req != NULL) {
1677 		workrequ = dev->id[c][j].curr_req;
1678 		printk("\n que cdb= ");
1679 		for (k=0; k < workrequ->cmd_len; k++) {
1680 		    printk(" %2x ",workrequ->cmnd[k]);
1681 		}
1682 		printk(" last_lenu= %x ",(unsigned int)dev->id[c][j].last_len);
1683 	   }
1684 	}
1685 	return SUCCESS;
1686 }
1687 
1688 static const char *atp870u_info(struct Scsi_Host *notused)
1689 {
1690 	static char buffer[128];
1691 
1692 	strcpy(buffer, "ACARD AEC-6710/6712/67160 PCI Ultra/W/LVD SCSI-3 Adapter Driver V2.6+ac ");
1693 
1694 	return buffer;
1695 }
1696 
1697 static int atp870u_show_info(struct seq_file *m, struct Scsi_Host *HBAptr)
1698 {
1699 	seq_puts(m, "ACARD AEC-671X Driver Version: 2.6+ac\n\n"
1700 		"Adapter Configuration:\n");
1701 	seq_printf(m, "               Base IO: %#.4lx\n", HBAptr->io_port);
1702 	seq_printf(m, "                   IRQ: %d\n", HBAptr->irq);
1703 	return 0;
1704 }
1705 
1706 
1707 static int atp870u_biosparam(struct scsi_device *disk, struct block_device *dev,
1708 			sector_t capacity, int *ip)
1709 {
1710 	int heads, sectors, cylinders;
1711 
1712 	heads = 64;
1713 	sectors = 32;
1714 	cylinders = (unsigned long)capacity / (heads * sectors);
1715 	if (cylinders > 1024) {
1716 		heads = 255;
1717 		sectors = 63;
1718 		cylinders = (unsigned long)capacity / (heads * sectors);
1719 	}
1720 	ip[0] = heads;
1721 	ip[1] = sectors;
1722 	ip[2] = cylinders;
1723 
1724 	return 0;
1725 }
1726 
1727 static void atp870u_remove (struct pci_dev *pdev)
1728 {
1729 	struct atp_unit *devext = pci_get_drvdata(pdev);
1730 	struct Scsi_Host *pshost = devext->host;
1731 
1732 	scsi_remove_host(pshost);
1733 	free_irq(pshost->irq, pshost);
1734 	pci_release_regions(pdev);
1735 	pci_disable_device(pdev);
1736 	atp870u_free_tables(pshost);
1737 	scsi_host_put(pshost);
1738 }
1739 MODULE_LICENSE("GPL");
1740 
1741 static struct scsi_host_template atp870u_template = {
1742      .module			= THIS_MODULE,
1743      .name			= "atp870u"		/* name */,
1744      .proc_name			= "atp870u",
1745      .show_info			= atp870u_show_info,
1746      .info			= atp870u_info		/* info */,
1747      .queuecommand		= atp870u_queuecommand	/* queuecommand */,
1748      .eh_abort_handler		= atp870u_abort		/* abort */,
1749      .bios_param		= atp870u_biosparam	/* biosparm */,
1750      .can_queue			= qcnt			/* can_queue */,
1751      .this_id			= 7			/* SCSI ID */,
1752      .sg_tablesize		= ATP870U_SCATTER	/*SG_ALL*/,
1753      .max_sectors		= ATP870U_MAX_SECTORS,
1754 };
1755 
1756 static struct pci_device_id atp870u_id_table[] = {
1757 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, ATP885_DEVID)			  },
1758 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, ATP880_DEVID1)		  },
1759 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, ATP880_DEVID2)		  },
1760 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7610)    },
1761 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7612UW)  },
1762 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7612U)   },
1763 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7612S)   },
1764 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7612D)	  },
1765 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7612SUW) },
1766 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_8060)	  },
1767 	{ 0, },
1768 };
1769 
1770 MODULE_DEVICE_TABLE(pci, atp870u_id_table);
1771 
1772 static struct pci_driver atp870u_driver = {
1773 	.id_table	= atp870u_id_table,
1774 	.name		= "atp870u",
1775 	.probe		= atp870u_probe,
1776 	.remove		= atp870u_remove,
1777 };
1778 
1779 module_pci_driver(atp870u_driver);
1780 
1781 static void atp_is(struct atp_unit *dev, unsigned char c, bool wide_chip,
1782 		   unsigned char lvdmode)
1783 {
1784 	unsigned char i, j, k, rmb, n;
1785 	unsigned short int m;
1786 	static unsigned char mbuf[512];
1787 	static unsigned char satn[9] = { 0, 0, 0, 0, 0, 0, 0, 6, 6 };
1788 	static unsigned char inqd[9] = { 0x12, 0, 0, 0, 0x24, 0, 0, 0x24, 6 };
1789 	static unsigned char synn[6] = { 0x80, 1, 3, 1, 0x19, 0x0e };
1790 	unsigned char synu[6] = { 0x80, 1, 3, 1, 0x0a, 0x0e };
1791 	static unsigned char synw[6] = { 0x80, 1, 3, 1, 0x19, 0x0e };
1792 	static unsigned char synw_870[6] = { 0x80, 1, 3, 1, 0x0c, 0x07 };
1793 	unsigned char synuw[6] = { 0x80, 1, 3, 1, 0x0a, 0x0e };
1794 	static unsigned char wide[6] = { 0x80, 1, 2, 3, 1, 0 };
1795 	static unsigned char u3[9] = { 0x80, 1, 6, 4, 0x09, 00, 0x0e, 0x01, 0x02 };
1796 
1797 	for (i = 0; i < 16; i++) {
1798 		if (!wide_chip && (i > 7))
1799 			break;
1800 		m = 1;
1801 		m = m << i;
1802 		if ((m & dev->active_id[c]) != 0) {
1803 			continue;
1804 		}
1805 		if (i == dev->host_id[c]) {
1806 			printk(KERN_INFO "         ID: %2d  Host Adapter\n", dev->host_id[c]);
1807 			continue;
1808 		}
1809 		atp_writeb_io(dev, c, 0x1b, wide_chip ? 0x01 : 0x00);
1810 		atp_writeb_io(dev, c, 1, 0x08);
1811 		atp_writeb_io(dev, c, 2, 0x7f);
1812 		atp_writeb_io(dev, c, 3, satn[0]);
1813 		atp_writeb_io(dev, c, 4, satn[1]);
1814 		atp_writeb_io(dev, c, 5, satn[2]);
1815 		atp_writeb_io(dev, c, 6, satn[3]);
1816 		atp_writeb_io(dev, c, 7, satn[4]);
1817 		atp_writeb_io(dev, c, 8, satn[5]);
1818 		atp_writeb_io(dev, c, 0x0f, 0);
1819 		atp_writeb_io(dev, c, 0x11, dev->id[c][i].devsp);
1820 		atp_writeb_io(dev, c, 0x12, 0);
1821 		atp_writeb_io(dev, c, 0x13, satn[6]);
1822 		atp_writeb_io(dev, c, 0x14, satn[7]);
1823 		j = i;
1824 		if ((j & 0x08) != 0) {
1825 			j = (j & 0x07) | 0x40;
1826 		}
1827 		atp_writeb_io(dev, c, 0x15, j);
1828 		atp_writeb_io(dev, c, 0x18, satn[8]);
1829 
1830 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
1831 			cpu_relax();
1832 
1833 		if (atp_readb_io(dev, c, 0x17) != 0x11 && atp_readb_io(dev, c, 0x17) != 0x8e)
1834 			continue;
1835 
1836 		while (atp_readb_io(dev, c, 0x17) != 0x8e)
1837 			cpu_relax();
1838 
1839 		dev->active_id[c] |= m;
1840 
1841 		atp_writeb_io(dev, c, 0x10, 0x30);
1842 		if (is885(dev) || is880(dev))
1843 			atp_writeb_io(dev, c, 0x14, 0x00);
1844 		else /* result of is870() merge - is this a bug? */
1845 			atp_writeb_io(dev, c, 0x04, 0x00);
1846 
1847 phase_cmd:
1848 		atp_writeb_io(dev, c, 0x18, 0x08);
1849 
1850 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
1851 			cpu_relax();
1852 
1853 		j = atp_readb_io(dev, c, 0x17);
1854 		if (j != 0x16) {
1855 			atp_writeb_io(dev, c, 0x10, 0x41);
1856 			goto phase_cmd;
1857 		}
1858 sel_ok:
1859 		atp_writeb_io(dev, c, 3, inqd[0]);
1860 		atp_writeb_io(dev, c, 4, inqd[1]);
1861 		atp_writeb_io(dev, c, 5, inqd[2]);
1862 		atp_writeb_io(dev, c, 6, inqd[3]);
1863 		atp_writeb_io(dev, c, 7, inqd[4]);
1864 		atp_writeb_io(dev, c, 8, inqd[5]);
1865 		atp_writeb_io(dev, c, 0x0f, 0);
1866 		atp_writeb_io(dev, c, 0x11, dev->id[c][i].devsp);
1867 		atp_writeb_io(dev, c, 0x12, 0);
1868 		atp_writeb_io(dev, c, 0x13, inqd[6]);
1869 		atp_writeb_io(dev, c, 0x14, inqd[7]);
1870 		atp_writeb_io(dev, c, 0x18, inqd[8]);
1871 
1872 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
1873 			cpu_relax();
1874 
1875 		if (atp_readb_io(dev, c, 0x17) != 0x11 && atp_readb_io(dev, c, 0x17) != 0x8e)
1876 			continue;
1877 
1878 		while (atp_readb_io(dev, c, 0x17) != 0x8e)
1879 			cpu_relax();
1880 
1881 		if (wide_chip)
1882 			atp_writeb_io(dev, c, 0x1b, 0x00);
1883 
1884 		atp_writeb_io(dev, c, 0x18, 0x08);
1885 		j = 0;
1886 rd_inq_data:
1887 		k = atp_readb_io(dev, c, 0x1f);
1888 		if ((k & 0x01) != 0) {
1889 			mbuf[j++] = atp_readb_io(dev, c, 0x19);
1890 			goto rd_inq_data;
1891 		}
1892 		if ((k & 0x80) == 0) {
1893 			goto rd_inq_data;
1894 		}
1895 		j = atp_readb_io(dev, c, 0x17);
1896 		if (j == 0x16) {
1897 			goto inq_ok;
1898 		}
1899 		atp_writeb_io(dev, c, 0x10, 0x46);
1900 		atp_writeb_io(dev, c, 0x12, 0);
1901 		atp_writeb_io(dev, c, 0x13, 0);
1902 		atp_writeb_io(dev, c, 0x14, 0);
1903 		atp_writeb_io(dev, c, 0x18, 0x08);
1904 
1905 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
1906 			cpu_relax();
1907 
1908 		if (atp_readb_io(dev, c, 0x17) != 0x16)
1909 			goto sel_ok;
1910 
1911 inq_ok:
1912 		mbuf[36] = 0;
1913 		printk(KERN_INFO "         ID: %2d  %s\n", i, &mbuf[8]);
1914 		dev->id[c][i].devtype = mbuf[0];
1915 		rmb = mbuf[1];
1916 		n = mbuf[7];
1917 		if (!wide_chip)
1918 			goto not_wide;
1919 		if ((mbuf[7] & 0x60) == 0) {
1920 			goto not_wide;
1921 		}
1922 		if (is885(dev) || is880(dev)) {
1923 			if ((i < 8) && ((dev->global_map[c] & 0x20) == 0))
1924 				goto not_wide;
1925 		} else { /* result of is870() merge - is this a bug? */
1926 			if ((dev->global_map[c] & 0x20) == 0)
1927 				goto not_wide;
1928 		}
1929 		if (lvdmode == 0) {
1930 			goto chg_wide;
1931 		}
1932 		if (dev->sp[c][i] != 0x04)	// force u2
1933 		{
1934 			goto chg_wide;
1935 		}
1936 
1937 		atp_writeb_io(dev, c, 0x1b, 0x01);
1938 		atp_writeb_io(dev, c, 3, satn[0]);
1939 		atp_writeb_io(dev, c, 4, satn[1]);
1940 		atp_writeb_io(dev, c, 5, satn[2]);
1941 		atp_writeb_io(dev, c, 6, satn[3]);
1942 		atp_writeb_io(dev, c, 7, satn[4]);
1943 		atp_writeb_io(dev, c, 8, satn[5]);
1944 		atp_writeb_io(dev, c, 0x0f, 0);
1945 		atp_writeb_io(dev, c, 0x11, dev->id[c][i].devsp);
1946 		atp_writeb_io(dev, c, 0x12, 0);
1947 		atp_writeb_io(dev, c, 0x13, satn[6]);
1948 		atp_writeb_io(dev, c, 0x14, satn[7]);
1949 		atp_writeb_io(dev, c, 0x18, satn[8]);
1950 
1951 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
1952 			cpu_relax();
1953 
1954 		if (atp_readb_io(dev, c, 0x17) != 0x11 && atp_readb_io(dev, c, 0x17) != 0x8e)
1955 			continue;
1956 
1957 		while (atp_readb_io(dev, c, 0x17) != 0x8e)
1958 			cpu_relax();
1959 
1960 try_u3:
1961 		j = 0;
1962 		atp_writeb_io(dev, c, 0x14, 0x09);
1963 		atp_writeb_io(dev, c, 0x18, 0x20);
1964 
1965 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0) {
1966 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0)
1967 				atp_writeb_io(dev, c, 0x19, u3[j++]);
1968 			cpu_relax();
1969 		}
1970 
1971 		while ((atp_readb_io(dev, c, 0x17) & 0x80) == 0x00)
1972 			cpu_relax();
1973 
1974 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
1975 		if (j == 0x0f) {
1976 			goto u3p_in;
1977 		}
1978 		if (j == 0x0a) {
1979 			goto u3p_cmd;
1980 		}
1981 		if (j == 0x0e) {
1982 			goto try_u3;
1983 		}
1984 		continue;
1985 u3p_out:
1986 		atp_writeb_io(dev, c, 0x18, 0x20);
1987 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0) {
1988 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0)
1989 				atp_writeb_io(dev, c, 0x19, 0);
1990 			cpu_relax();
1991 		}
1992 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
1993 		if (j == 0x0f) {
1994 			goto u3p_in;
1995 		}
1996 		if (j == 0x0a) {
1997 			goto u3p_cmd;
1998 		}
1999 		if (j == 0x0e) {
2000 			goto u3p_out;
2001 		}
2002 		continue;
2003 u3p_in:
2004 		atp_writeb_io(dev, c, 0x14, 0x09);
2005 		atp_writeb_io(dev, c, 0x18, 0x20);
2006 		k = 0;
2007 u3p_in1:
2008 		j = atp_readb_io(dev, c, 0x1f);
2009 		if ((j & 0x01) != 0) {
2010 			mbuf[k++] = atp_readb_io(dev, c, 0x19);
2011 			goto u3p_in1;
2012 		}
2013 		if ((j & 0x80) == 0x00) {
2014 			goto u3p_in1;
2015 		}
2016 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
2017 		if (j == 0x0f) {
2018 			goto u3p_in;
2019 		}
2020 		if (j == 0x0a) {
2021 			goto u3p_cmd;
2022 		}
2023 		if (j == 0x0e) {
2024 			goto u3p_out;
2025 		}
2026 		continue;
2027 u3p_cmd:
2028 		atp_writeb_io(dev, c, 0x10, 0x30);
2029 		atp_writeb_io(dev, c, 0x14, 0x00);
2030 		atp_writeb_io(dev, c, 0x18, 0x08);
2031 
2032 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00);
2033 
2034 		j = atp_readb_io(dev, c, 0x17);
2035 		if (j != 0x16) {
2036 			if (j == 0x4e) {
2037 				goto u3p_out;
2038 			}
2039 			continue;
2040 		}
2041 		if (mbuf[0] != 0x01) {
2042 			goto chg_wide;
2043 		}
2044 		if (mbuf[1] != 0x06) {
2045 			goto chg_wide;
2046 		}
2047 		if (mbuf[2] != 0x04) {
2048 			goto chg_wide;
2049 		}
2050 		if (mbuf[3] == 0x09) {
2051 			m = 1;
2052 			m = m << i;
2053 			dev->wide_id[c] |= m;
2054 			dev->id[c][i].devsp = 0xce;
2055 #ifdef ED_DBGP
2056 			printk("dev->id[%2d][%2d].devsp = %2x\n",
2057 			       c, i, dev->id[c][i].devsp);
2058 #endif
2059 			continue;
2060 		}
2061 chg_wide:
2062 		atp_writeb_io(dev, c, 0x1b, 0x01);
2063 		atp_writeb_io(dev, c, 3, satn[0]);
2064 		atp_writeb_io(dev, c, 4, satn[1]);
2065 		atp_writeb_io(dev, c, 5, satn[2]);
2066 		atp_writeb_io(dev, c, 6, satn[3]);
2067 		atp_writeb_io(dev, c, 7, satn[4]);
2068 		atp_writeb_io(dev, c, 8, satn[5]);
2069 		atp_writeb_io(dev, c, 0x0f, 0);
2070 		atp_writeb_io(dev, c, 0x11, dev->id[c][i].devsp);
2071 		atp_writeb_io(dev, c, 0x12, 0);
2072 		atp_writeb_io(dev, c, 0x13, satn[6]);
2073 		atp_writeb_io(dev, c, 0x14, satn[7]);
2074 		atp_writeb_io(dev, c, 0x18, satn[8]);
2075 
2076 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
2077 			cpu_relax();
2078 
2079 		if (atp_readb_io(dev, c, 0x17) != 0x11 &&
2080 		    atp_readb_io(dev, c, 0x17) != 0x8e)
2081 			continue;
2082 
2083 		while (atp_readb_io(dev, c, 0x17) != 0x8e)
2084 			cpu_relax();
2085 
2086 try_wide:
2087 		j = 0;
2088 		atp_writeb_io(dev, c, 0x14, 0x05);
2089 		atp_writeb_io(dev, c, 0x18, 0x20);
2090 
2091 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0) {
2092 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0)
2093 				atp_writeb_io(dev, c, 0x19, wide[j++]);
2094 			cpu_relax();
2095 		}
2096 
2097 		while ((atp_readb_io(dev, c, 0x17) & 0x80) == 0x00)
2098 			cpu_relax();
2099 
2100 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
2101 		if (j == 0x0f) {
2102 			goto widep_in;
2103 		}
2104 		if (j == 0x0a) {
2105 			goto widep_cmd;
2106 		}
2107 		if (j == 0x0e) {
2108 			goto try_wide;
2109 		}
2110 		continue;
2111 widep_out:
2112 		atp_writeb_io(dev, c, 0x18, 0x20);
2113 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0) {
2114 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0)
2115 				atp_writeb_io(dev, c, 0x19, 0);
2116 			cpu_relax();
2117 		}
2118 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
2119 		if (j == 0x0f) {
2120 			goto widep_in;
2121 		}
2122 		if (j == 0x0a) {
2123 			goto widep_cmd;
2124 		}
2125 		if (j == 0x0e) {
2126 			goto widep_out;
2127 		}
2128 		continue;
2129 widep_in:
2130 		atp_writeb_io(dev, c, 0x14, 0xff);
2131 		atp_writeb_io(dev, c, 0x18, 0x20);
2132 		k = 0;
2133 widep_in1:
2134 		j = atp_readb_io(dev, c, 0x1f);
2135 		if ((j & 0x01) != 0) {
2136 			mbuf[k++] = atp_readb_io(dev, c, 0x19);
2137 			goto widep_in1;
2138 		}
2139 		if ((j & 0x80) == 0x00) {
2140 			goto widep_in1;
2141 		}
2142 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
2143 		if (j == 0x0f) {
2144 			goto widep_in;
2145 		}
2146 		if (j == 0x0a) {
2147 			goto widep_cmd;
2148 		}
2149 		if (j == 0x0e) {
2150 			goto widep_out;
2151 		}
2152 		continue;
2153 widep_cmd:
2154 		atp_writeb_io(dev, c, 0x10, 0x30);
2155 		atp_writeb_io(dev, c, 0x14, 0x00);
2156 		atp_writeb_io(dev, c, 0x18, 0x08);
2157 
2158 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
2159 			cpu_relax();
2160 
2161 		j = atp_readb_io(dev, c, 0x17);
2162 		if (j != 0x16) {
2163 			if (j == 0x4e) {
2164 				goto widep_out;
2165 			}
2166 			continue;
2167 		}
2168 		if (mbuf[0] != 0x01) {
2169 			goto not_wide;
2170 		}
2171 		if (mbuf[1] != 0x02) {
2172 			goto not_wide;
2173 		}
2174 		if (mbuf[2] != 0x03) {
2175 			goto not_wide;
2176 		}
2177 		if (mbuf[3] != 0x01) {
2178 			goto not_wide;
2179 		}
2180 		m = 1;
2181 		m = m << i;
2182 		dev->wide_id[c] |= m;
2183 not_wide:
2184 		if ((dev->id[c][i].devtype == 0x00) ||
2185 		    (dev->id[c][i].devtype == 0x07) ||
2186 		    ((dev->id[c][i].devtype == 0x05) && ((n & 0x10) != 0))) {
2187 			m = 1;
2188 			m = m << i;
2189 			if ((dev->async[c] & m) != 0) {
2190 				goto set_sync;
2191 			}
2192 		}
2193 		continue;
2194 set_sync:
2195 		if ((!is885(dev) && !is880(dev)) || (dev->sp[c][i] == 0x02)) {
2196 			synu[4] = 0x0c;
2197 			synuw[4] = 0x0c;
2198 		} else {
2199 			if (dev->sp[c][i] >= 0x03) {
2200 				synu[4] = 0x0a;
2201 				synuw[4] = 0x0a;
2202 			}
2203 		}
2204 		j = 0;
2205 		if ((m & dev->wide_id[c]) != 0) {
2206 			j |= 0x01;
2207 		}
2208 		atp_writeb_io(dev, c, 0x1b, j);
2209 		atp_writeb_io(dev, c, 3, satn[0]);
2210 		atp_writeb_io(dev, c, 4, satn[1]);
2211 		atp_writeb_io(dev, c, 5, satn[2]);
2212 		atp_writeb_io(dev, c, 6, satn[3]);
2213 		atp_writeb_io(dev, c, 7, satn[4]);
2214 		atp_writeb_io(dev, c, 8, satn[5]);
2215 		atp_writeb_io(dev, c, 0x0f, 0);
2216 		atp_writeb_io(dev, c, 0x11, dev->id[c][i].devsp);
2217 		atp_writeb_io(dev, c, 0x12, 0);
2218 		atp_writeb_io(dev, c, 0x13, satn[6]);
2219 		atp_writeb_io(dev, c, 0x14, satn[7]);
2220 		atp_writeb_io(dev, c, 0x18, satn[8]);
2221 
2222 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
2223 			cpu_relax();
2224 
2225 		if (atp_readb_io(dev, c, 0x17) != 0x11 &&
2226 		    atp_readb_io(dev, c, 0x17) != 0x8e)
2227 			continue;
2228 
2229 		while (atp_readb_io(dev, c, 0x17) != 0x8e)
2230 			cpu_relax();
2231 
2232 try_sync:
2233 		j = 0;
2234 		atp_writeb_io(dev, c, 0x14, 0x06);
2235 		atp_writeb_io(dev, c, 0x18, 0x20);
2236 
2237 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0) {
2238 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0) {
2239 				if ((m & dev->wide_id[c]) != 0) {
2240 					if (is885(dev) || is880(dev)) {
2241 						if ((m & dev->ultra_map[c]) != 0) {
2242 							atp_writeb_io(dev, c, 0x19, synuw[j++]);
2243 						} else {
2244 							atp_writeb_io(dev, c, 0x19, synw[j++]);
2245 						}
2246 					} else
2247 						atp_writeb_io(dev, c, 0x19, synw_870[j++]);
2248 				} else {
2249 					if ((m & dev->ultra_map[c]) != 0) {
2250 						atp_writeb_io(dev, c, 0x19, synu[j++]);
2251 					} else {
2252 						atp_writeb_io(dev, c, 0x19, synn[j++]);
2253 					}
2254 				}
2255 			}
2256 		}
2257 
2258 		while ((atp_readb_io(dev, c, 0x17) & 0x80) == 0x00)
2259 			cpu_relax();
2260 
2261 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
2262 		if (j == 0x0f) {
2263 			goto phase_ins;
2264 		}
2265 		if (j == 0x0a) {
2266 			goto phase_cmds;
2267 		}
2268 		if (j == 0x0e) {
2269 			goto try_sync;
2270 		}
2271 		continue;
2272 phase_outs:
2273 		atp_writeb_io(dev, c, 0x18, 0x20);
2274 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00) {
2275 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0x00)
2276 				atp_writeb_io(dev, c, 0x19, 0x00);
2277 			cpu_relax();
2278 		}
2279 		j = atp_readb_io(dev, c, 0x17);
2280 		if (j == 0x85) {
2281 			goto tar_dcons;
2282 		}
2283 		j &= 0x0f;
2284 		if (j == 0x0f) {
2285 			goto phase_ins;
2286 		}
2287 		if (j == 0x0a) {
2288 			goto phase_cmds;
2289 		}
2290 		if (j == 0x0e) {
2291 			goto phase_outs;
2292 		}
2293 		continue;
2294 phase_ins:
2295 		if (is885(dev) || is880(dev))
2296 			atp_writeb_io(dev, c, 0x14, 0x06);
2297 		else
2298 			atp_writeb_io(dev, c, 0x14, 0xff);
2299 		atp_writeb_io(dev, c, 0x18, 0x20);
2300 		k = 0;
2301 phase_ins1:
2302 		j = atp_readb_io(dev, c, 0x1f);
2303 		if ((j & 0x01) != 0x00) {
2304 			mbuf[k++] = atp_readb_io(dev, c, 0x19);
2305 			goto phase_ins1;
2306 		}
2307 		if ((j & 0x80) == 0x00) {
2308 			goto phase_ins1;
2309 		}
2310 
2311 		while ((atp_readb_io(dev, c, 0x17) & 0x80) == 0x00);
2312 
2313 		j = atp_readb_io(dev, c, 0x17);
2314 		if (j == 0x85) {
2315 			goto tar_dcons;
2316 		}
2317 		j &= 0x0f;
2318 		if (j == 0x0f) {
2319 			goto phase_ins;
2320 		}
2321 		if (j == 0x0a) {
2322 			goto phase_cmds;
2323 		}
2324 		if (j == 0x0e) {
2325 			goto phase_outs;
2326 		}
2327 		continue;
2328 phase_cmds:
2329 		atp_writeb_io(dev, c, 0x10, 0x30);
2330 tar_dcons:
2331 		atp_writeb_io(dev, c, 0x14, 0x00);
2332 		atp_writeb_io(dev, c, 0x18, 0x08);
2333 
2334 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
2335 			cpu_relax();
2336 
2337 		j = atp_readb_io(dev, c, 0x17);
2338 		if (j != 0x16) {
2339 			continue;
2340 		}
2341 		if (mbuf[0] != 0x01) {
2342 			continue;
2343 		}
2344 		if (mbuf[1] != 0x03) {
2345 			continue;
2346 		}
2347 		if (mbuf[4] == 0x00) {
2348 			continue;
2349 		}
2350 		if (mbuf[3] > 0x64) {
2351 			continue;
2352 		}
2353 		if (is885(dev) || is880(dev)) {
2354 			if (mbuf[4] > 0x0e) {
2355 				mbuf[4] = 0x0e;
2356 			}
2357 		} else {
2358 			if (mbuf[4] > 0x0c) {
2359 				mbuf[4] = 0x0c;
2360 			}
2361 		}
2362 		dev->id[c][i].devsp = mbuf[4];
2363 		if (is885(dev) || is880(dev))
2364 			if (mbuf[3] < 0x0c) {
2365 				j = 0xb0;
2366 				goto set_syn_ok;
2367 			}
2368 		if ((mbuf[3] < 0x0d) && (rmb == 0)) {
2369 			j = 0xa0;
2370 			goto set_syn_ok;
2371 		}
2372 		if (mbuf[3] < 0x1a) {
2373 			j = 0x20;
2374 			goto set_syn_ok;
2375 		}
2376 		if (mbuf[3] < 0x33) {
2377 			j = 0x40;
2378 			goto set_syn_ok;
2379 		}
2380 		if (mbuf[3] < 0x4c) {
2381 			j = 0x50;
2382 			goto set_syn_ok;
2383 		}
2384 		j = 0x60;
2385 set_syn_ok:
2386 		dev->id[c][i].devsp = (dev->id[c][i].devsp & 0x0f) | j;
2387 #ifdef ED_DBGP
2388 		printk("dev->id[%2d][%2d].devsp = %2x\n",
2389 		       c,i,dev->id[c][i].devsp);
2390 #endif
2391 	}
2392 }
2393