xref: /openbmc/linux/drivers/scsi/atp870u.c (revision 8938c48f)
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	-	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  *	@host: host
717  *
718  *	On entry there is work queued to be done. We move some of that work to the
719  *	controller itself.
720  *
721  *	Caller holds the host lock.
722  */
723 static void send_s870(struct atp_unit *dev,unsigned char c)
724 {
725 	struct scsi_cmnd *workreq = NULL;
726 	unsigned int i;//,k;
727 	unsigned char  j, target_id;
728 	unsigned char *prd;
729 	unsigned short int w;
730 	unsigned long l, bttl = 0;
731 	unsigned long  sg_count;
732 
733 	if (dev->in_snd[c] != 0) {
734 #ifdef ED_DBGP
735 		printk("cmnd in_snd\n");
736 #endif
737 		return;
738 	}
739 #ifdef ED_DBGP
740 	printk("Sent_s870 enter\n");
741 #endif
742 	dev->in_snd[c] = 1;
743 	if ((dev->last_cmd[c] != 0xff) && ((dev->last_cmd[c] & 0x40) != 0)) {
744 		dev->last_cmd[c] &= 0x0f;
745 		workreq = dev->id[c][dev->last_cmd[c]].curr_req;
746 		if (!workreq) {
747 			dev->last_cmd[c] = 0xff;
748 			if (dev->quhd[c] == dev->quend[c]) {
749 				dev->in_snd[c] = 0;
750 				return;
751 			}
752 		}
753 	}
754 	if (!workreq) {
755 		if ((dev->last_cmd[c] != 0xff) && (dev->working[c] != 0)) {
756 			dev->in_snd[c] = 0;
757 			return;
758 		}
759 		dev->working[c]++;
760 		j = dev->quhd[c];
761 		dev->quhd[c]++;
762 		if (dev->quhd[c] >= qcnt)
763 			dev->quhd[c] = 0;
764 		workreq = dev->quereq[c][dev->quhd[c]];
765 		if (dev->id[c][scmd_id(workreq)].curr_req != NULL) {
766 			dev->quhd[c] = j;
767 			dev->working[c]--;
768 			dev->in_snd[c] = 0;
769 			return;
770 		}
771 		dev->id[c][scmd_id(workreq)].curr_req = workreq;
772 		dev->last_cmd[c] = scmd_id(workreq);
773 	}
774 	if ((atp_readb_io(dev, c, 0x1f) & 0xb0) != 0 ||
775 	    atp_readb_io(dev, c, 0x1c) != 0) {
776 #ifdef ED_DBGP
777 		printk("Abort to Send\n");
778 #endif
779 		dev->last_cmd[c] |= 0x40;
780 		dev->in_snd[c] = 0;
781 		return;
782 	}
783 #ifdef ED_DBGP
784 	printk("OK to Send\n");
785 	scmd_printk(KERN_DEBUG, workreq, "CDB");
786 	for(i=0;i<workreq->cmd_len;i++) {
787 		printk(" %x",workreq->cmnd[i]);
788 	}
789 	printk("\n");
790 #endif
791 	l = scsi_bufflen(workreq);
792 
793 	if (is885(dev)) {
794 		j = atp_readb_base(dev, 0x29) & 0xfe;
795 		atp_writeb_base(dev, 0x29, j);
796 		dev->r1f[c][scmd_id(workreq)] = 0;
797 	}
798 
799 	if (workreq->cmnd[0] == READ_CAPACITY) {
800 		if (l > 8)
801 			l = 8;
802 	}
803 	if (workreq->cmnd[0] == TEST_UNIT_READY) {
804 		l = 0;
805 	}
806 
807 	j = 0;
808 	target_id = scmd_id(workreq);
809 
810 	/*
811 	 *	Wide ?
812 	 */
813 	w = 1;
814 	w = w << target_id;
815 	if ((w & dev->wide_id[c]) != 0) {
816 		j |= 0x01;
817 	}
818 	atp_writeb_io(dev, c, 0x1b, j);
819 	while ((atp_readb_io(dev, c, 0x1b) & 0x01) != j) {
820 		atp_writeb_pci(dev, c, 0x1b, j);
821 #ifdef ED_DBGP
822 		printk("send_s870 while loop 1\n");
823 #endif
824 	}
825 	/*
826 	 *	Write the command
827 	 */
828 
829 	atp_writeb_io(dev, c, 0x00, workreq->cmd_len);
830 	atp_writeb_io(dev, c, 0x01, 0x2c);
831 	if (is885(dev))
832 		atp_writeb_io(dev, c, 0x02, 0x7f);
833 	else
834 		atp_writeb_io(dev, c, 0x02, 0xcf);
835 	for (i = 0; i < workreq->cmd_len; i++)
836 		atp_writeb_io(dev, c, 0x03 + i, workreq->cmnd[i]);
837 	atp_writeb_io(dev, c, 0x0f, workreq->device->lun);
838 	/*
839 	 *	Write the target
840 	 */
841 	atp_writeb_io(dev, c, 0x11, dev->id[c][target_id].devsp);
842 #ifdef ED_DBGP
843 	printk("dev->id[%d][%d].devsp = %2x\n",c,target_id,
844 	       dev->id[c][target_id].devsp);
845 #endif
846 
847 	sg_count = scsi_dma_map(workreq);
848 	/*
849 	 *	Write transfer size
850 	 */
851 	atp_writeb_io(dev, c, 0x12, ((unsigned char *) (&l))[2]);
852 	atp_writeb_io(dev, c, 0x13, ((unsigned char *) (&l))[1]);
853 	atp_writeb_io(dev, c, 0x14, ((unsigned char *) (&l))[0]);
854 	j = target_id;
855 	dev->id[c][j].last_len = l;
856 	dev->id[c][j].tran_len = 0;
857 #ifdef ED_DBGP
858 	printk("dev->id[%2d][%2d].last_len = %d\n",c,j,dev->id[c][j].last_len);
859 #endif
860 	/*
861 	 *	Flip the wide bits
862 	 */
863 	if ((j & 0x08) != 0) {
864 		j = (j & 0x07) | 0x40;
865 	}
866 	/*
867 	 *	Check transfer direction
868 	 */
869 	if (workreq->sc_data_direction == DMA_TO_DEVICE)
870 		atp_writeb_io(dev, c, 0x15, j | 0x20);
871 	else
872 		atp_writeb_io(dev, c, 0x15, j);
873 	atp_writeb_io(dev, c, 0x16, atp_readb_io(dev, c, 0x16) | 0x80);
874 	atp_writeb_io(dev, c, 0x16, 0x80);
875 	dev->id[c][target_id].dirct = 0;
876 	if (l == 0) {
877 		if (atp_readb_io(dev, c, 0x1c) == 0) {
878 #ifdef ED_DBGP
879 			printk("change SCSI_CMD_REG 0x08\n");
880 #endif
881 			atp_writeb_io(dev, c, 0x18, 0x08);
882 		} else
883 			dev->last_cmd[c] |= 0x40;
884 		dev->in_snd[c] = 0;
885 		return;
886 	}
887 	prd = dev->id[c][target_id].prd_table;
888 	dev->id[c][target_id].prd_pos = prd;
889 
890 	/*
891 	 *	Now write the request list. Either as scatter/gather or as
892 	 *	a linear chain.
893 	 */
894 
895 	if (l) {
896 		struct scatterlist *sgpnt;
897 		i = 0;
898 		scsi_for_each_sg(workreq, sgpnt, sg_count, j) {
899 			bttl = sg_dma_address(sgpnt);
900 			l=sg_dma_len(sgpnt);
901 #ifdef ED_DBGP
902 			printk("1. bttl %x, l %x\n",bttl, l);
903 #endif
904 			while (l > 0x10000) {
905 				(((u16 *) (prd))[i + 3]) = 0x0000;
906 				(((u16 *) (prd))[i + 2]) = 0x0000;
907 				(((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);
908 				l -= 0x10000;
909 				bttl += 0x10000;
910 				i += 0x04;
911 			}
912 			(((u32 *) (prd))[i >> 1]) = cpu_to_le32(bttl);
913 			(((u16 *) (prd))[i + 2]) = cpu_to_le16(l);
914 			(((u16 *) (prd))[i + 3]) = 0;
915 			i += 0x04;
916 		}
917 		(((u16 *) (prd))[i - 1]) = cpu_to_le16(0x8000);
918 #ifdef ED_DBGP
919 		printk("prd %4x %4x %4x %4x\n",
920 		       (((unsigned short int *)prd)[0]),
921 		       (((unsigned short int *)prd)[1]),
922 		       (((unsigned short int *)prd)[2]),
923 		       (((unsigned short int *)prd)[3]));
924 		printk("2. bttl %x, l %x\n",bttl, l);
925 #endif
926 	}
927 #ifdef ED_DBGP
928 	printk("send_s870: prdaddr_2 0x%8x target_id %d\n",
929 	       dev->id[c][target_id].prdaddr,target_id);
930 #endif
931 	dev->id[c][target_id].prdaddr = dev->id[c][target_id].prd_bus;
932 	atp_writel_pci(dev, c, 4, dev->id[c][target_id].prdaddr);
933 	atp_writeb_pci(dev, c, 2, 0x06);
934 	atp_writeb_pci(dev, c, 2, 0x00);
935 	if (is885(dev)) {
936 		j = atp_readb_pci(dev, c, 1) & 0xf3;
937 		if ((workreq->cmnd[0] == READ_6) ||
938 		    (workreq->cmnd[0] == READ_10) ||
939 		    (workreq->cmnd[0] == WRITE_6) ||
940 		    (workreq->cmnd[0] == WRITE_10)) {
941 			j |= 0x0c;
942 		}
943 		atp_writeb_pci(dev, c, 1, j);
944 	} else if (is880(dev)) {
945 		if ((workreq->cmnd[0] == READ_6) ||
946 		    (workreq->cmnd[0] == READ_10) ||
947 		    (workreq->cmnd[0] == WRITE_6) ||
948 		    (workreq->cmnd[0] == WRITE_10))
949 			atp_writeb_base(dev, 0x3b,
950 					(atp_readb_base(dev, 0x3b) & 0x3f) | 0xc0);
951 		else
952 			atp_writeb_base(dev, 0x3b,
953 					atp_readb_base(dev, 0x3b) & 0x3f);
954 	} else {
955 		if ((workreq->cmnd[0] == READ_6) ||
956 		    (workreq->cmnd[0] == READ_10) ||
957 		    (workreq->cmnd[0] == WRITE_6) ||
958 		    (workreq->cmnd[0] == WRITE_10))
959 			atp_writeb_base(dev, 0x3a,
960 					(atp_readb_base(dev, 0x3a) & 0xf3) | 0x08);
961 		else
962 			atp_writeb_base(dev, 0x3a,
963 					atp_readb_base(dev, 0x3a) & 0xf3);
964 	}
965 
966 	if(workreq->sc_data_direction == DMA_TO_DEVICE) {
967 		dev->id[c][target_id].dirct = 0x20;
968 		if (atp_readb_io(dev, c, 0x1c) == 0) {
969 			atp_writeb_io(dev, c, 0x18, 0x08);
970 			atp_writeb_pci(dev, c, 0, 0x01);
971 #ifdef ED_DBGP
972 		printk( "start DMA(to target)\n");
973 #endif
974 		} else {
975 			dev->last_cmd[c] |= 0x40;
976 		}
977 		dev->in_snd[c] = 0;
978 		return;
979 	}
980 	if (atp_readb_io(dev, c, 0x1c) == 0) {
981 		atp_writeb_io(dev, c, 0x18, 0x08);
982 		atp_writeb_pci(dev, c, 0, 0x09);
983 #ifdef ED_DBGP
984 		printk( "start DMA(to host)\n");
985 #endif
986 	} else {
987 		dev->last_cmd[c] |= 0x40;
988 	}
989 	dev->in_snd[c] = 0;
990 	return;
991 
992 }
993 
994 static unsigned char fun_scam(struct atp_unit *dev, unsigned short int *val)
995 {
996 	unsigned short int i, k;
997 	unsigned char j;
998 
999 	atp_writew_io(dev, 0, 0x1c, *val);
1000 	for (i = 0; i < 10; i++) {	/* stable >= bus settle delay(400 ns)  */
1001 		k = atp_readw_io(dev, 0, 0x1c);
1002 		j = (unsigned char) (k >> 8);
1003 		if ((k & 0x8000) != 0)	/* DB7 all release?    */
1004 			i = 0;
1005 	}
1006 	*val |= 0x4000;		/* assert DB6           */
1007 	atp_writew_io(dev, 0, 0x1c, *val);
1008 	*val &= 0xdfff;		/* assert DB5           */
1009 	atp_writew_io(dev, 0, 0x1c, *val);
1010 	for (i = 0; i < 10; i++) {	/* stable >= bus settle delay(400 ns) */
1011 		if ((atp_readw_io(dev, 0, 0x1c) & 0x2000) != 0)	/* DB5 all release?       */
1012 			i = 0;
1013 	}
1014 	*val |= 0x8000;		/* no DB4-0, assert DB7    */
1015 	*val &= 0xe0ff;
1016 	atp_writew_io(dev, 0, 0x1c, *val);
1017 	*val &= 0xbfff;		/* release DB6             */
1018 	atp_writew_io(dev, 0, 0x1c, *val);
1019 	for (i = 0; i < 10; i++) {	/* stable >= bus settle delay(400 ns)  */
1020 		if ((atp_readw_io(dev, 0, 0x1c) & 0x4000) != 0)	/* DB6 all release?  */
1021 			i = 0;
1022 	}
1023 
1024 	return j;
1025 }
1026 
1027 static void tscam(struct Scsi_Host *host, bool wide_chip, u8 scam_on)
1028 {
1029 
1030 	unsigned char i, j, k;
1031 	unsigned long n;
1032 	unsigned short int m, assignid_map, val;
1033 	unsigned char mbuf[33], quintet[2];
1034 	struct atp_unit *dev = (struct atp_unit *)&host->hostdata;
1035 	static unsigned char g2q_tab[8] = {
1036 		0x38, 0x31, 0x32, 0x2b, 0x34, 0x2d, 0x2e, 0x27
1037 	};
1038 
1039 /*  I can't believe we need this before we've even done anything.  Remove it
1040  *  and see if anyone bitches.
1041 	for (i = 0; i < 0x10; i++) {
1042 		udelay(0xffff);
1043 	}
1044  */
1045 
1046 	atp_writeb_io(dev, 0, 1, 0x08);
1047 	atp_writeb_io(dev, 0, 2, 0x7f);
1048 	atp_writeb_io(dev, 0, 0x11, 0x20);
1049 
1050 	if ((scam_on & 0x40) == 0) {
1051 		return;
1052 	}
1053 	m = 1;
1054 	m <<= dev->host_id[0];
1055 	j = 16;
1056 	if (!wide_chip) {
1057 		m |= 0xff00;
1058 		j = 8;
1059 	}
1060 	assignid_map = m;
1061 	atp_writeb_io(dev, 0, 0x02, 0x02);	/* 2*2=4ms,3EH 2/32*3E=3.9ms */
1062 	atp_writeb_io(dev, 0, 0x03, 0);
1063 	atp_writeb_io(dev, 0, 0x04, 0);
1064 	atp_writeb_io(dev, 0, 0x05, 0);
1065 	atp_writeb_io(dev, 0, 0x06, 0);
1066 	atp_writeb_io(dev, 0, 0x07, 0);
1067 	atp_writeb_io(dev, 0, 0x08, 0);
1068 
1069 	for (i = 0; i < j; i++) {
1070 		m = 1;
1071 		m = m << i;
1072 		if ((m & assignid_map) != 0) {
1073 			continue;
1074 		}
1075 		atp_writeb_io(dev, 0, 0x0f, 0);
1076 		atp_writeb_io(dev, 0, 0x12, 0);
1077 		atp_writeb_io(dev, 0, 0x13, 0);
1078 		atp_writeb_io(dev, 0, 0x14, 0);
1079 		if (i > 7) {
1080 			k = (i & 0x07) | 0x40;
1081 		} else {
1082 			k = i;
1083 		}
1084 		atp_writeb_io(dev, 0, 0x15, k);
1085 		if (wide_chip)
1086 			atp_writeb_io(dev, 0, 0x1b, 0x01);
1087 		else
1088 			atp_writeb_io(dev, 0, 0x1b, 0x00);
1089 		do {
1090 			atp_writeb_io(dev, 0, 0x18, 0x09);
1091 
1092 			while ((atp_readb_io(dev, 0, 0x1f) & 0x80) == 0x00)
1093 				cpu_relax();
1094 			k = atp_readb_io(dev, 0, 0x17);
1095 			if ((k == 0x85) || (k == 0x42))
1096 				break;
1097 			if (k != 0x16)
1098 				atp_writeb_io(dev, 0, 0x10, 0x41);
1099 		} while (k != 0x16);
1100 		if ((k == 0x85) || (k == 0x42))
1101 			continue;
1102 		assignid_map |= m;
1103 
1104 	}
1105 	atp_writeb_io(dev, 0, 0x02, 0x7f);
1106 	atp_writeb_io(dev, 0, 0x1b, 0x02);
1107 
1108 	udelay(2);
1109 
1110 	val = 0x0080;		/* bsy  */
1111 	atp_writew_io(dev, 0, 0x1c, val);
1112 	val |= 0x0040;		/* sel  */
1113 	atp_writew_io(dev, 0, 0x1c, val);
1114 	val |= 0x0004;		/* msg  */
1115 	atp_writew_io(dev, 0, 0x1c, val);
1116 	udelay(2);		/* 2 deskew delay(45ns*2=90ns) */
1117 	val &= 0x007f;		/* no bsy  */
1118 	atp_writew_io(dev, 0, 0x1c, val);
1119 	msleep(128);
1120 	val &= 0x00fb;		/* after 1ms no msg */
1121 	atp_writew_io(dev, 0, 0x1c, val);
1122 	while ((atp_readb_io(dev, 0, 0x1c) & 0x04) != 0)
1123 		;
1124 	udelay(2);
1125 	udelay(100);
1126 	for (n = 0; n < 0x30000; n++)
1127 		if ((atp_readb_io(dev, 0, 0x1c) & 0x80) != 0)	/* bsy ? */
1128 			break;
1129 	if (n < 0x30000)
1130 		for (n = 0; n < 0x30000; n++)
1131 			if ((atp_readb_io(dev, 0, 0x1c) & 0x81) == 0x0081) {
1132 				udelay(2);
1133 				val |= 0x8003;		/* io,cd,db7  */
1134 				atp_writew_io(dev, 0, 0x1c, val);
1135 				udelay(2);
1136 				val &= 0x00bf;		/* no sel     */
1137 				atp_writew_io(dev, 0, 0x1c, val);
1138 				udelay(2);
1139 				break;
1140 			}
1141 	while (1) {
1142 	/*
1143 	 * The funny division into multiple delays is to accomodate
1144 	 * arches like ARM where udelay() multiplies its argument by
1145 	 * a large number to initialize a loop counter.  To avoid
1146 	 * overflow, the maximum supported udelay is 2000 microseconds.
1147 	 *
1148 	 * XXX it would be more polite to find a way to use msleep()
1149 	 */
1150 	mdelay(2);
1151 	udelay(48);
1152 	if ((atp_readb_io(dev, 0, 0x1c) & 0x80) == 0x00) {	/* bsy ? */
1153 		atp_writew_io(dev, 0, 0x1c, 0);
1154 		atp_writeb_io(dev, 0, 0x1b, 0);
1155 		atp_writeb_io(dev, 0, 0x15, 0);
1156 		atp_writeb_io(dev, 0, 0x18, 0x09);
1157 		while ((atp_readb_io(dev, 0, 0x1f) & 0x80) == 0)
1158 			cpu_relax();
1159 		atp_readb_io(dev, 0, 0x17);
1160 		return;
1161 	}
1162 	val &= 0x00ff;		/* synchronization  */
1163 	val |= 0x3f00;
1164 	fun_scam(dev, &val);
1165 	udelay(2);
1166 	val &= 0x00ff;		/* isolation        */
1167 	val |= 0x2000;
1168 	fun_scam(dev, &val);
1169 	udelay(2);
1170 	i = 8;
1171 	j = 0;
1172 
1173 	while (1) {
1174 		if ((atp_readw_io(dev, 0, 0x1c) & 0x2000) == 0)
1175 			continue;
1176 		udelay(2);
1177 		val &= 0x00ff;		/* get ID_STRING */
1178 		val |= 0x2000;
1179 		k = fun_scam(dev, &val);
1180 		if ((k & 0x03) == 0)
1181 			break;
1182 		mbuf[j] <<= 0x01;
1183 		mbuf[j] &= 0xfe;
1184 		if ((k & 0x02) != 0)
1185 			mbuf[j] |= 0x01;
1186 		i--;
1187 		if (i > 0)
1188 			continue;
1189 		j++;
1190 		i = 8;
1191 	}
1192 
1193 	/* isolation complete..  */
1194 /*    mbuf[32]=0;
1195 	printk(" \n%x %x %x %s\n ",assignid_map,mbuf[0],mbuf[1],&mbuf[2]); */
1196 	i = 15;
1197 	j = mbuf[0];
1198 	if ((j & 0x20) != 0) {	/* bit5=1:ID up to 7      */
1199 		i = 7;
1200 	}
1201 	if ((j & 0x06) != 0) {	/* IDvalid?             */
1202 		k = mbuf[1];
1203 		while (1) {
1204 			m = 1;
1205 			m <<= k;
1206 			if ((m & assignid_map) == 0)
1207 				break;
1208 			if (k > 0)
1209 				k--;
1210 			else
1211 				break;
1212 		}
1213 	}
1214 	if ((m & assignid_map) != 0) {	/* srch from max acceptable ID#  */
1215 		k = i;			/* max acceptable ID#            */
1216 		while (1) {
1217 			m = 1;
1218 			m <<= k;
1219 			if ((m & assignid_map) == 0)
1220 				break;
1221 			if (k > 0)
1222 				k--;
1223 			else
1224 				break;
1225 		}
1226 	}
1227 	/* k=binID#,       */
1228 	assignid_map |= m;
1229 	if (k < 8) {
1230 		quintet[0] = 0x38;	/* 1st dft ID<8    */
1231 	} else {
1232 		quintet[0] = 0x31;	/* 1st  ID>=8      */
1233 	}
1234 	k &= 0x07;
1235 	quintet[1] = g2q_tab[k];
1236 
1237 	val &= 0x00ff;		/* AssignID 1stQuintet,AH=001xxxxx  */
1238 	m = quintet[0] << 8;
1239 	val |= m;
1240 	fun_scam(dev, &val);
1241 	val &= 0x00ff;		/* AssignID 2ndQuintet,AH=001xxxxx */
1242 	m = quintet[1] << 8;
1243 	val |= m;
1244 	fun_scam(dev, &val);
1245 
1246 	}
1247 }
1248 
1249 static void atp870u_free_tables(struct Scsi_Host *host)
1250 {
1251 	struct atp_unit *atp_dev = (struct atp_unit *)&host->hostdata;
1252 	int j, k;
1253 	for (j=0; j < 2; j++) {
1254 		for (k = 0; k < 16; k++) {
1255 			if (!atp_dev->id[j][k].prd_table)
1256 				continue;
1257 			dma_free_coherent(&atp_dev->pdev->dev, 1024,
1258 					  atp_dev->id[j][k].prd_table,
1259 					  atp_dev->id[j][k].prd_bus);
1260 			atp_dev->id[j][k].prd_table = NULL;
1261 		}
1262 	}
1263 }
1264 
1265 static int atp870u_init_tables(struct Scsi_Host *host)
1266 {
1267 	struct atp_unit *atp_dev = (struct atp_unit *)&host->hostdata;
1268 	int c,k;
1269 	for(c=0;c < 2;c++) {
1270 		for(k=0;k<16;k++) {
1271 			atp_dev->id[c][k].prd_table =
1272 				dma_alloc_coherent(&atp_dev->pdev->dev, 1024,
1273 						   &(atp_dev->id[c][k].prd_bus),
1274 						   GFP_KERNEL);
1275 			if (!atp_dev->id[c][k].prd_table) {
1276 				printk("atp870u_init_tables fail\n");
1277 				atp870u_free_tables(host);
1278 				return -ENOMEM;
1279 			}
1280 			atp_dev->id[c][k].prdaddr = atp_dev->id[c][k].prd_bus;
1281 			atp_dev->id[c][k].devsp=0x20;
1282 			atp_dev->id[c][k].devtype = 0x7f;
1283 			atp_dev->id[c][k].curr_req = NULL;
1284 		}
1285 
1286 		atp_dev->active_id[c] = 0;
1287 		atp_dev->wide_id[c] = 0;
1288 		atp_dev->host_id[c] = 0x07;
1289 		atp_dev->quhd[c] = 0;
1290 		atp_dev->quend[c] = 0;
1291 		atp_dev->last_cmd[c] = 0xff;
1292 		atp_dev->in_snd[c] = 0;
1293 		atp_dev->in_int[c] = 0;
1294 
1295 		for (k = 0; k < qcnt; k++) {
1296 			atp_dev->quereq[c][k] = NULL;
1297 		}
1298 		for (k = 0; k < 16; k++) {
1299 			   atp_dev->id[c][k].curr_req = NULL;
1300 			   atp_dev->sp[c][k] = 0x04;
1301 		}
1302 	}
1303 	return 0;
1304 }
1305 
1306 static void atp_set_host_id(struct atp_unit *atp, u8 c, u8 host_id)
1307 {
1308 	atp_writeb_io(atp, c, 0, host_id | 0x08);
1309 	atp_writeb_io(atp, c, 0x18, 0);
1310 	while ((atp_readb_io(atp, c, 0x1f) & 0x80) == 0)
1311 		mdelay(1);
1312 	atp_readb_io(atp, c, 0x17);
1313 	atp_writeb_io(atp, c, 1, 8);
1314 	atp_writeb_io(atp, c, 2, 0x7f);
1315 	atp_writeb_io(atp, c, 0x11, 0x20);
1316 }
1317 
1318 static void atp870_init(struct Scsi_Host *shpnt)
1319 {
1320 	struct atp_unit *atpdev = shost_priv(shpnt);
1321 	struct pci_dev *pdev = atpdev->pdev;
1322 	unsigned char k, host_id;
1323 	u8 scam_on;
1324 	bool wide_chip =
1325 		(pdev->device == PCI_DEVICE_ID_ARTOP_AEC7610 &&
1326 		 pdev->revision == 4) ||
1327 		(pdev->device == PCI_DEVICE_ID_ARTOP_AEC7612UW) ||
1328 		(pdev->device == PCI_DEVICE_ID_ARTOP_AEC7612SUW);
1329 
1330 	pci_read_config_byte(pdev, 0x49, &host_id);
1331 
1332 	dev_info(&pdev->dev, "ACARD AEC-671X PCI Ultra/W SCSI-2/3 "
1333 		 "Host Adapter: IO:%lx, IRQ:%d.\n",
1334 		 shpnt->io_port, shpnt->irq);
1335 
1336 	atpdev->ioport[0] = shpnt->io_port;
1337 	atpdev->pciport[0] = shpnt->io_port + 0x20;
1338 	host_id &= 0x07;
1339 	atpdev->host_id[0] = host_id;
1340 	scam_on = atp_readb_pci(atpdev, 0, 2);
1341 	atpdev->global_map[0] = atp_readb_base(atpdev, 0x2d);
1342 	atpdev->ultra_map[0] = atp_readw_base(atpdev, 0x2e);
1343 
1344 	if (atpdev->ultra_map[0] == 0) {
1345 		scam_on = 0x00;
1346 		atpdev->global_map[0] = 0x20;
1347 		atpdev->ultra_map[0] = 0xffff;
1348 	}
1349 
1350 	if (pdev->revision > 0x07)	/* check if atp876 chip */
1351 		atp_writeb_base(atpdev, 0x3e, 0x00); /* enable terminator */
1352 
1353 	k = (atp_readb_base(atpdev, 0x3a) & 0xf3) | 0x10;
1354 	atp_writeb_base(atpdev, 0x3a, k);
1355 	atp_writeb_base(atpdev, 0x3a, k & 0xdf);
1356 	msleep(32);
1357 	atp_writeb_base(atpdev, 0x3a, k);
1358 	msleep(32);
1359 	atp_set_host_id(atpdev, 0, host_id);
1360 
1361 	tscam(shpnt, wide_chip, scam_on);
1362 	atp_writeb_base(atpdev, 0x3a, atp_readb_base(atpdev, 0x3a) | 0x10);
1363 	atp_is(atpdev, 0, wide_chip, 0);
1364 	atp_writeb_base(atpdev, 0x3a, atp_readb_base(atpdev, 0x3a) & 0xef);
1365 	atp_writeb_base(atpdev, 0x3b, atp_readb_base(atpdev, 0x3b) | 0x20);
1366 	shpnt->max_id = wide_chip ? 16 : 8;
1367 	shpnt->this_id = host_id;
1368 }
1369 
1370 static void atp880_init(struct Scsi_Host *shpnt)
1371 {
1372 	struct atp_unit *atpdev = shost_priv(shpnt);
1373 	struct pci_dev *pdev = atpdev->pdev;
1374 	unsigned char k, m, host_id;
1375 	unsigned int n;
1376 
1377 	pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
1378 
1379 	atpdev->ioport[0] = shpnt->io_port + 0x40;
1380 	atpdev->pciport[0] = shpnt->io_port + 0x28;
1381 
1382 	host_id = atp_readb_base(atpdev, 0x39) >> 4;
1383 
1384 	dev_info(&pdev->dev, "ACARD AEC-67160 PCI Ultra3 LVD "
1385 		 "Host Adapter: IO:%lx, IRQ:%d.\n",
1386 		 shpnt->io_port, shpnt->irq);
1387 	atpdev->host_id[0] = host_id;
1388 
1389 	atpdev->global_map[0] = atp_readb_base(atpdev, 0x35);
1390 	atpdev->ultra_map[0] = atp_readw_base(atpdev, 0x3c);
1391 
1392 	n = 0x3f09;
1393 	while (n < 0x4000) {
1394 		m = 0;
1395 		atp_writew_base(atpdev, 0x34, n);
1396 		n += 0x0002;
1397 		if (atp_readb_base(atpdev, 0x30) == 0xff)
1398 			break;
1399 
1400 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x30);
1401 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x31);
1402 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x32);
1403 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x33);
1404 		atp_writew_base(atpdev, 0x34, n);
1405 		n += 0x0002;
1406 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x30);
1407 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x31);
1408 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x32);
1409 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x33);
1410 		atp_writew_base(atpdev, 0x34, n);
1411 		n += 0x0002;
1412 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x30);
1413 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x31);
1414 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x32);
1415 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x33);
1416 		atp_writew_base(atpdev, 0x34, n);
1417 		n += 0x0002;
1418 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x30);
1419 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x31);
1420 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x32);
1421 		atpdev->sp[0][m++] = atp_readb_base(atpdev, 0x33);
1422 		n += 0x0018;
1423 	}
1424 	atp_writew_base(atpdev, 0x34, 0);
1425 	atpdev->ultra_map[0] = 0;
1426 	atpdev->async[0] = 0;
1427 	for (k = 0; k < 16; k++) {
1428 		n = 1 << k;
1429 		if (atpdev->sp[0][k] > 1)
1430 			atpdev->ultra_map[0] |= n;
1431 		else
1432 			if (atpdev->sp[0][k] == 0)
1433 				atpdev->async[0] |= n;
1434 	}
1435 	atpdev->async[0] = ~(atpdev->async[0]);
1436 	atp_writeb_base(atpdev, 0x35, atpdev->global_map[0]);
1437 
1438 	k = atp_readb_base(atpdev, 0x38) & 0x80;
1439 	atp_writeb_base(atpdev, 0x38, k);
1440 	atp_writeb_base(atpdev, 0x3b, 0x20);
1441 	msleep(32);
1442 	atp_writeb_base(atpdev, 0x3b, 0);
1443 	msleep(32);
1444 	atp_readb_io(atpdev, 0, 0x1b);
1445 	atp_readb_io(atpdev, 0, 0x17);
1446 
1447 	atp_set_host_id(atpdev, 0, host_id);
1448 
1449 	tscam(shpnt, true, atp_readb_base(atpdev, 0x22));
1450 	atp_is(atpdev, 0, true, atp_readb_base(atpdev, 0x3f) & 0x40);
1451 	atp_writeb_base(atpdev, 0x38, 0xb0);
1452 	shpnt->max_id = 16;
1453 	shpnt->this_id = host_id;
1454 }
1455 
1456 static void atp885_init(struct Scsi_Host *shpnt)
1457 {
1458 	struct atp_unit *atpdev = shost_priv(shpnt);
1459 	struct pci_dev *pdev = atpdev->pdev;
1460 	unsigned char k, m, c;
1461 	unsigned int n;
1462 	unsigned char setupdata[2][16];
1463 
1464 	dev_info(&pdev->dev, "ACARD AEC-67162 PCI Ultra3 LVD "
1465 		 "Host Adapter: IO:%lx, IRQ:%d.\n",
1466 		 shpnt->io_port, shpnt->irq);
1467 
1468 	atpdev->ioport[0] = shpnt->io_port + 0x80;
1469 	atpdev->ioport[1] = shpnt->io_port + 0xc0;
1470 	atpdev->pciport[0] = shpnt->io_port + 0x40;
1471 	atpdev->pciport[1] = shpnt->io_port + 0x50;
1472 
1473 	c = atp_readb_base(atpdev, 0x29);
1474 	atp_writeb_base(atpdev, 0x29, c | 0x04);
1475 
1476 	n = 0x1f80;
1477 	while (n < 0x2000) {
1478 		atp_writew_base(atpdev, 0x3c, n);
1479 		if (atp_readl_base(atpdev, 0x38) == 0xffffffff)
1480 			break;
1481 		for (m = 0; m < 2; m++) {
1482 			atpdev->global_map[m] = 0;
1483 			for (k = 0; k < 4; k++) {
1484 				atp_writew_base(atpdev, 0x3c, n++);
1485 				((u32 *)&setupdata[m][0])[k] =
1486 					atp_readl_base(atpdev, 0x38);
1487 			}
1488 			for (k = 0; k < 4; k++) {
1489 				atp_writew_base(atpdev, 0x3c, n++);
1490 				((u32 *)&atpdev->sp[m][0])[k] =
1491 					atp_readl_base(atpdev, 0x38);
1492 			}
1493 			n += 8;
1494 		}
1495 	}
1496 	c = atp_readb_base(atpdev, 0x29);
1497 	atp_writeb_base(atpdev, 0x29, c & 0xfb);
1498 	for (c = 0; c < 2; c++) {
1499 		atpdev->ultra_map[c] = 0;
1500 		atpdev->async[c] = 0;
1501 		for (k = 0; k < 16; k++) {
1502 			n = 1 << k;
1503 			if (atpdev->sp[c][k] > 1)
1504 				atpdev->ultra_map[c] |= n;
1505 			else
1506 				if (atpdev->sp[c][k] == 0)
1507 					atpdev->async[c] |= n;
1508 		}
1509 		atpdev->async[c] = ~(atpdev->async[c]);
1510 
1511 		if (atpdev->global_map[c] == 0) {
1512 			k = setupdata[c][1];
1513 			if ((k & 0x40) != 0)
1514 				atpdev->global_map[c] |= 0x20;
1515 			k &= 0x07;
1516 			atpdev->global_map[c] |= k;
1517 			if ((setupdata[c][2] & 0x04) != 0)
1518 				atpdev->global_map[c] |= 0x08;
1519 			atpdev->host_id[c] = setupdata[c][0] & 0x07;
1520 		}
1521 	}
1522 
1523 	k = atp_readb_base(atpdev, 0x28) & 0x8f;
1524 	k |= 0x10;
1525 	atp_writeb_base(atpdev, 0x28, k);
1526 	atp_writeb_pci(atpdev, 0, 1, 0x80);
1527 	atp_writeb_pci(atpdev, 1, 1, 0x80);
1528 	msleep(100);
1529 	atp_writeb_pci(atpdev, 0, 1, 0);
1530 	atp_writeb_pci(atpdev, 1, 1, 0);
1531 	msleep(1000);
1532 	atp_readb_io(atpdev, 0, 0x1b);
1533 	atp_readb_io(atpdev, 0, 0x17);
1534 	atp_readb_io(atpdev, 1, 0x1b);
1535 	atp_readb_io(atpdev, 1, 0x17);
1536 
1537 	k = atpdev->host_id[0];
1538 	if (k > 7)
1539 		k = (k & 0x07) | 0x40;
1540 	atp_set_host_id(atpdev, 0, k);
1541 
1542 	k = atpdev->host_id[1];
1543 	if (k > 7)
1544 		k = (k & 0x07) | 0x40;
1545 	atp_set_host_id(atpdev, 1, k);
1546 
1547 	msleep(600); /* this delay used to be called tscam_885() */
1548 	dev_info(&pdev->dev, "Scanning Channel A SCSI Device ...\n");
1549 	atp_is(atpdev, 0, true, atp_readb_io(atpdev, 0, 0x1b) >> 7);
1550 	atp_writeb_io(atpdev, 0, 0x16, 0x80);
1551 	dev_info(&pdev->dev, "Scanning Channel B SCSI Device ...\n");
1552 	atp_is(atpdev, 1, true, atp_readb_io(atpdev, 1, 0x1b) >> 7);
1553 	atp_writeb_io(atpdev, 1, 0x16, 0x80);
1554 	k = atp_readb_base(atpdev, 0x28) & 0xcf;
1555 	k |= 0xc0;
1556 	atp_writeb_base(atpdev, 0x28, k);
1557 	k = atp_readb_base(atpdev, 0x1f) | 0x80;
1558 	atp_writeb_base(atpdev, 0x1f, k);
1559 	k = atp_readb_base(atpdev, 0x29) | 0x01;
1560 	atp_writeb_base(atpdev, 0x29, k);
1561 	shpnt->max_id = 16;
1562 	shpnt->max_lun = (atpdev->global_map[0] & 0x07) + 1;
1563 	shpnt->max_channel = 1;
1564 	shpnt->this_id = atpdev->host_id[0];
1565 }
1566 
1567 /* return non-zero on detection */
1568 static int atp870u_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1569 {
1570 	struct Scsi_Host *shpnt = NULL;
1571 	struct atp_unit *atpdev;
1572 	int err;
1573 
1574 	if (ent->device == PCI_DEVICE_ID_ARTOP_AEC7610 && pdev->revision < 2) {
1575 		dev_err(&pdev->dev, "ATP850S chips (AEC6710L/F cards) are not supported.\n");
1576 		return -ENODEV;
1577 	}
1578 
1579 	err = pci_enable_device(pdev);
1580 	if (err)
1581 		goto fail;
1582 
1583 	if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
1584 		printk(KERN_ERR "atp870u: DMA mask required but not available.\n");
1585 		err = -EIO;
1586 		goto disable_device;
1587 	}
1588 
1589 	err = pci_request_regions(pdev, "atp870u");
1590 	if (err)
1591 		goto disable_device;
1592 	pci_set_master(pdev);
1593 
1594 	err = -ENOMEM;
1595 	shpnt = scsi_host_alloc(&atp870u_template, sizeof(struct atp_unit));
1596 	if (!shpnt)
1597 		goto release_region;
1598 
1599 	atpdev = shost_priv(shpnt);
1600 
1601 	atpdev->host = shpnt;
1602 	atpdev->pdev = pdev;
1603 	pci_set_drvdata(pdev, atpdev);
1604 
1605 	shpnt->io_port = pci_resource_start(pdev, 0);
1606 	shpnt->io_port &= 0xfffffff8;
1607 	shpnt->n_io_port = pci_resource_len(pdev, 0);
1608 	atpdev->baseport = shpnt->io_port;
1609 	shpnt->unique_id = shpnt->io_port;
1610 	shpnt->irq = pdev->irq;
1611 
1612 	err = atp870u_init_tables(shpnt);
1613 	if (err) {
1614 		dev_err(&pdev->dev, "Unable to allocate tables for Acard controller\n");
1615 		goto unregister;
1616 	}
1617 
1618 	if (is880(atpdev))
1619 		atp880_init(shpnt);
1620 	else if (is885(atpdev))
1621 		atp885_init(shpnt);
1622 	else
1623 		atp870_init(shpnt);
1624 
1625 	err = request_irq(shpnt->irq, atp870u_intr_handle, IRQF_SHARED, "atp870u", shpnt);
1626 	if (err) {
1627 		dev_err(&pdev->dev, "Unable to allocate IRQ %d.\n", shpnt->irq);
1628 		goto free_tables;
1629 	}
1630 
1631 	err = scsi_add_host(shpnt, &pdev->dev);
1632 	if (err)
1633 		goto scsi_add_fail;
1634 	scsi_scan_host(shpnt);
1635 
1636 	return 0;
1637 
1638 scsi_add_fail:
1639 	free_irq(shpnt->irq, shpnt);
1640 free_tables:
1641 	atp870u_free_tables(shpnt);
1642 unregister:
1643 	scsi_host_put(shpnt);
1644 release_region:
1645 	pci_release_regions(pdev);
1646 disable_device:
1647 	pci_disable_device(pdev);
1648 fail:
1649 	return err;
1650 }
1651 
1652 /* The abort command does not leave the device in a clean state where
1653    it is available to be used again.  Until this gets worked out, we will
1654    leave it commented out.  */
1655 
1656 static int atp870u_abort(struct scsi_cmnd * SCpnt)
1657 {
1658 	unsigned char  j, k, c;
1659 	struct scsi_cmnd *workrequ;
1660 	struct atp_unit *dev;
1661 	struct Scsi_Host *host;
1662 	host = SCpnt->device->host;
1663 
1664 	dev = (struct atp_unit *)&host->hostdata;
1665 	c = scmd_channel(SCpnt);
1666 	printk(" atp870u: abort Channel = %x \n", c);
1667 	printk("working=%x last_cmd=%x ", dev->working[c], dev->last_cmd[c]);
1668 	printk(" quhdu=%x quendu=%x ", dev->quhd[c], dev->quend[c]);
1669 	for (j = 0; j < 0x18; j++) {
1670 		printk(" r%2x=%2x", j, atp_readb_io(dev, c, j));
1671 	}
1672 	printk(" r1c=%2x", atp_readb_io(dev, c, 0x1c));
1673 	printk(" r1f=%2x in_snd=%2x ", atp_readb_io(dev, c, 0x1f), dev->in_snd[c]);
1674 	printk(" d00=%2x", atp_readb_pci(dev, c, 0x00));
1675 	printk(" d02=%2x", atp_readb_pci(dev, c, 0x02));
1676 	for(j=0;j<16;j++) {
1677 	   if (dev->id[c][j].curr_req != NULL) {
1678 		workrequ = dev->id[c][j].curr_req;
1679 		printk("\n que cdb= ");
1680 		for (k=0; k < workrequ->cmd_len; k++) {
1681 		    printk(" %2x ",workrequ->cmnd[k]);
1682 		}
1683 		printk(" last_lenu= %x ",(unsigned int)dev->id[c][j].last_len);
1684 	   }
1685 	}
1686 	return SUCCESS;
1687 }
1688 
1689 static const char *atp870u_info(struct Scsi_Host *notused)
1690 {
1691 	static char buffer[128];
1692 
1693 	strcpy(buffer, "ACARD AEC-6710/6712/67160 PCI Ultra/W/LVD SCSI-3 Adapter Driver V2.6+ac ");
1694 
1695 	return buffer;
1696 }
1697 
1698 static int atp870u_show_info(struct seq_file *m, struct Scsi_Host *HBAptr)
1699 {
1700 	seq_puts(m, "ACARD AEC-671X Driver Version: 2.6+ac\n\n"
1701 		"Adapter Configuration:\n");
1702 	seq_printf(m, "               Base IO: %#.4lx\n", HBAptr->io_port);
1703 	seq_printf(m, "                   IRQ: %d\n", HBAptr->irq);
1704 	return 0;
1705 }
1706 
1707 
1708 static int atp870u_biosparam(struct scsi_device *disk, struct block_device *dev,
1709 			sector_t capacity, int *ip)
1710 {
1711 	int heads, sectors, cylinders;
1712 
1713 	heads = 64;
1714 	sectors = 32;
1715 	cylinders = (unsigned long)capacity / (heads * sectors);
1716 	if (cylinders > 1024) {
1717 		heads = 255;
1718 		sectors = 63;
1719 		cylinders = (unsigned long)capacity / (heads * sectors);
1720 	}
1721 	ip[0] = heads;
1722 	ip[1] = sectors;
1723 	ip[2] = cylinders;
1724 
1725 	return 0;
1726 }
1727 
1728 static void atp870u_remove (struct pci_dev *pdev)
1729 {
1730 	struct atp_unit *devext = pci_get_drvdata(pdev);
1731 	struct Scsi_Host *pshost = devext->host;
1732 
1733 	scsi_remove_host(pshost);
1734 	free_irq(pshost->irq, pshost);
1735 	pci_release_regions(pdev);
1736 	pci_disable_device(pdev);
1737 	atp870u_free_tables(pshost);
1738 	scsi_host_put(pshost);
1739 }
1740 MODULE_LICENSE("GPL");
1741 
1742 static struct scsi_host_template atp870u_template = {
1743      .module			= THIS_MODULE,
1744      .name			= "atp870u"		/* name */,
1745      .proc_name			= "atp870u",
1746      .show_info			= atp870u_show_info,
1747      .info			= atp870u_info		/* info */,
1748      .queuecommand		= atp870u_queuecommand	/* queuecommand */,
1749      .eh_abort_handler		= atp870u_abort		/* abort */,
1750      .bios_param		= atp870u_biosparam	/* biosparm */,
1751      .can_queue			= qcnt			/* can_queue */,
1752      .this_id			= 7			/* SCSI ID */,
1753      .sg_tablesize		= ATP870U_SCATTER	/*SG_ALL*/,
1754      .max_sectors		= ATP870U_MAX_SECTORS,
1755 };
1756 
1757 static struct pci_device_id atp870u_id_table[] = {
1758 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, ATP885_DEVID)			  },
1759 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, ATP880_DEVID1)		  },
1760 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, ATP880_DEVID2)		  },
1761 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7610)    },
1762 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7612UW)  },
1763 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7612U)   },
1764 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7612S)   },
1765 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7612D)	  },
1766 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_AEC7612SUW) },
1767 	{ PCI_DEVICE(PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_8060)	  },
1768 	{ 0, },
1769 };
1770 
1771 MODULE_DEVICE_TABLE(pci, atp870u_id_table);
1772 
1773 static struct pci_driver atp870u_driver = {
1774 	.id_table	= atp870u_id_table,
1775 	.name		= "atp870u",
1776 	.probe		= atp870u_probe,
1777 	.remove		= atp870u_remove,
1778 };
1779 
1780 module_pci_driver(atp870u_driver);
1781 
1782 static void atp_is(struct atp_unit *dev, unsigned char c, bool wide_chip,
1783 		   unsigned char lvdmode)
1784 {
1785 	unsigned char i, j, k, rmb, n;
1786 	unsigned short int m;
1787 	static unsigned char mbuf[512];
1788 	static unsigned char satn[9] = { 0, 0, 0, 0, 0, 0, 0, 6, 6 };
1789 	static unsigned char inqd[9] = { 0x12, 0, 0, 0, 0x24, 0, 0, 0x24, 6 };
1790 	static unsigned char synn[6] = { 0x80, 1, 3, 1, 0x19, 0x0e };
1791 	unsigned char synu[6] = { 0x80, 1, 3, 1, 0x0a, 0x0e };
1792 	static unsigned char synw[6] = { 0x80, 1, 3, 1, 0x19, 0x0e };
1793 	static unsigned char synw_870[6] = { 0x80, 1, 3, 1, 0x0c, 0x07 };
1794 	unsigned char synuw[6] = { 0x80, 1, 3, 1, 0x0a, 0x0e };
1795 	static unsigned char wide[6] = { 0x80, 1, 2, 3, 1, 0 };
1796 	static unsigned char u3[9] = { 0x80, 1, 6, 4, 0x09, 00, 0x0e, 0x01, 0x02 };
1797 
1798 	for (i = 0; i < 16; i++) {
1799 		if (!wide_chip && (i > 7))
1800 			break;
1801 		m = 1;
1802 		m = m << i;
1803 		if ((m & dev->active_id[c]) != 0) {
1804 			continue;
1805 		}
1806 		if (i == dev->host_id[c]) {
1807 			printk(KERN_INFO "         ID: %2d  Host Adapter\n", dev->host_id[c]);
1808 			continue;
1809 		}
1810 		atp_writeb_io(dev, c, 0x1b, wide_chip ? 0x01 : 0x00);
1811 		atp_writeb_io(dev, c, 1, 0x08);
1812 		atp_writeb_io(dev, c, 2, 0x7f);
1813 		atp_writeb_io(dev, c, 3, satn[0]);
1814 		atp_writeb_io(dev, c, 4, satn[1]);
1815 		atp_writeb_io(dev, c, 5, satn[2]);
1816 		atp_writeb_io(dev, c, 6, satn[3]);
1817 		atp_writeb_io(dev, c, 7, satn[4]);
1818 		atp_writeb_io(dev, c, 8, satn[5]);
1819 		atp_writeb_io(dev, c, 0x0f, 0);
1820 		atp_writeb_io(dev, c, 0x11, dev->id[c][i].devsp);
1821 		atp_writeb_io(dev, c, 0x12, 0);
1822 		atp_writeb_io(dev, c, 0x13, satn[6]);
1823 		atp_writeb_io(dev, c, 0x14, satn[7]);
1824 		j = i;
1825 		if ((j & 0x08) != 0) {
1826 			j = (j & 0x07) | 0x40;
1827 		}
1828 		atp_writeb_io(dev, c, 0x15, j);
1829 		atp_writeb_io(dev, c, 0x18, satn[8]);
1830 
1831 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
1832 			cpu_relax();
1833 
1834 		if (atp_readb_io(dev, c, 0x17) != 0x11 && atp_readb_io(dev, c, 0x17) != 0x8e)
1835 			continue;
1836 
1837 		while (atp_readb_io(dev, c, 0x17) != 0x8e)
1838 			cpu_relax();
1839 
1840 		dev->active_id[c] |= m;
1841 
1842 		atp_writeb_io(dev, c, 0x10, 0x30);
1843 		if (is885(dev) || is880(dev))
1844 			atp_writeb_io(dev, c, 0x14, 0x00);
1845 		else /* result of is870() merge - is this a bug? */
1846 			atp_writeb_io(dev, c, 0x04, 0x00);
1847 
1848 phase_cmd:
1849 		atp_writeb_io(dev, c, 0x18, 0x08);
1850 
1851 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
1852 			cpu_relax();
1853 
1854 		j = atp_readb_io(dev, c, 0x17);
1855 		if (j != 0x16) {
1856 			atp_writeb_io(dev, c, 0x10, 0x41);
1857 			goto phase_cmd;
1858 		}
1859 sel_ok:
1860 		atp_writeb_io(dev, c, 3, inqd[0]);
1861 		atp_writeb_io(dev, c, 4, inqd[1]);
1862 		atp_writeb_io(dev, c, 5, inqd[2]);
1863 		atp_writeb_io(dev, c, 6, inqd[3]);
1864 		atp_writeb_io(dev, c, 7, inqd[4]);
1865 		atp_writeb_io(dev, c, 8, inqd[5]);
1866 		atp_writeb_io(dev, c, 0x0f, 0);
1867 		atp_writeb_io(dev, c, 0x11, dev->id[c][i].devsp);
1868 		atp_writeb_io(dev, c, 0x12, 0);
1869 		atp_writeb_io(dev, c, 0x13, inqd[6]);
1870 		atp_writeb_io(dev, c, 0x14, inqd[7]);
1871 		atp_writeb_io(dev, c, 0x18, inqd[8]);
1872 
1873 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
1874 			cpu_relax();
1875 
1876 		if (atp_readb_io(dev, c, 0x17) != 0x11 && atp_readb_io(dev, c, 0x17) != 0x8e)
1877 			continue;
1878 
1879 		while (atp_readb_io(dev, c, 0x17) != 0x8e)
1880 			cpu_relax();
1881 
1882 		if (wide_chip)
1883 			atp_writeb_io(dev, c, 0x1b, 0x00);
1884 
1885 		atp_writeb_io(dev, c, 0x18, 0x08);
1886 		j = 0;
1887 rd_inq_data:
1888 		k = atp_readb_io(dev, c, 0x1f);
1889 		if ((k & 0x01) != 0) {
1890 			mbuf[j++] = atp_readb_io(dev, c, 0x19);
1891 			goto rd_inq_data;
1892 		}
1893 		if ((k & 0x80) == 0) {
1894 			goto rd_inq_data;
1895 		}
1896 		j = atp_readb_io(dev, c, 0x17);
1897 		if (j == 0x16) {
1898 			goto inq_ok;
1899 		}
1900 		atp_writeb_io(dev, c, 0x10, 0x46);
1901 		atp_writeb_io(dev, c, 0x12, 0);
1902 		atp_writeb_io(dev, c, 0x13, 0);
1903 		atp_writeb_io(dev, c, 0x14, 0);
1904 		atp_writeb_io(dev, c, 0x18, 0x08);
1905 
1906 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
1907 			cpu_relax();
1908 
1909 		if (atp_readb_io(dev, c, 0x17) != 0x16)
1910 			goto sel_ok;
1911 
1912 inq_ok:
1913 		mbuf[36] = 0;
1914 		printk(KERN_INFO "         ID: %2d  %s\n", i, &mbuf[8]);
1915 		dev->id[c][i].devtype = mbuf[0];
1916 		rmb = mbuf[1];
1917 		n = mbuf[7];
1918 		if (!wide_chip)
1919 			goto not_wide;
1920 		if ((mbuf[7] & 0x60) == 0) {
1921 			goto not_wide;
1922 		}
1923 		if (is885(dev) || is880(dev)) {
1924 			if ((i < 8) && ((dev->global_map[c] & 0x20) == 0))
1925 				goto not_wide;
1926 		} else { /* result of is870() merge - is this a bug? */
1927 			if ((dev->global_map[c] & 0x20) == 0)
1928 				goto not_wide;
1929 		}
1930 		if (lvdmode == 0) {
1931 			goto chg_wide;
1932 		}
1933 		if (dev->sp[c][i] != 0x04)	// force u2
1934 		{
1935 			goto chg_wide;
1936 		}
1937 
1938 		atp_writeb_io(dev, c, 0x1b, 0x01);
1939 		atp_writeb_io(dev, c, 3, satn[0]);
1940 		atp_writeb_io(dev, c, 4, satn[1]);
1941 		atp_writeb_io(dev, c, 5, satn[2]);
1942 		atp_writeb_io(dev, c, 6, satn[3]);
1943 		atp_writeb_io(dev, c, 7, satn[4]);
1944 		atp_writeb_io(dev, c, 8, satn[5]);
1945 		atp_writeb_io(dev, c, 0x0f, 0);
1946 		atp_writeb_io(dev, c, 0x11, dev->id[c][i].devsp);
1947 		atp_writeb_io(dev, c, 0x12, 0);
1948 		atp_writeb_io(dev, c, 0x13, satn[6]);
1949 		atp_writeb_io(dev, c, 0x14, satn[7]);
1950 		atp_writeb_io(dev, c, 0x18, satn[8]);
1951 
1952 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
1953 			cpu_relax();
1954 
1955 		if (atp_readb_io(dev, c, 0x17) != 0x11 && atp_readb_io(dev, c, 0x17) != 0x8e)
1956 			continue;
1957 
1958 		while (atp_readb_io(dev, c, 0x17) != 0x8e)
1959 			cpu_relax();
1960 
1961 try_u3:
1962 		j = 0;
1963 		atp_writeb_io(dev, c, 0x14, 0x09);
1964 		atp_writeb_io(dev, c, 0x18, 0x20);
1965 
1966 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0) {
1967 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0)
1968 				atp_writeb_io(dev, c, 0x19, u3[j++]);
1969 			cpu_relax();
1970 		}
1971 
1972 		while ((atp_readb_io(dev, c, 0x17) & 0x80) == 0x00)
1973 			cpu_relax();
1974 
1975 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
1976 		if (j == 0x0f) {
1977 			goto u3p_in;
1978 		}
1979 		if (j == 0x0a) {
1980 			goto u3p_cmd;
1981 		}
1982 		if (j == 0x0e) {
1983 			goto try_u3;
1984 		}
1985 		continue;
1986 u3p_out:
1987 		atp_writeb_io(dev, c, 0x18, 0x20);
1988 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0) {
1989 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0)
1990 				atp_writeb_io(dev, c, 0x19, 0);
1991 			cpu_relax();
1992 		}
1993 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
1994 		if (j == 0x0f) {
1995 			goto u3p_in;
1996 		}
1997 		if (j == 0x0a) {
1998 			goto u3p_cmd;
1999 		}
2000 		if (j == 0x0e) {
2001 			goto u3p_out;
2002 		}
2003 		continue;
2004 u3p_in:
2005 		atp_writeb_io(dev, c, 0x14, 0x09);
2006 		atp_writeb_io(dev, c, 0x18, 0x20);
2007 		k = 0;
2008 u3p_in1:
2009 		j = atp_readb_io(dev, c, 0x1f);
2010 		if ((j & 0x01) != 0) {
2011 			mbuf[k++] = atp_readb_io(dev, c, 0x19);
2012 			goto u3p_in1;
2013 		}
2014 		if ((j & 0x80) == 0x00) {
2015 			goto u3p_in1;
2016 		}
2017 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
2018 		if (j == 0x0f) {
2019 			goto u3p_in;
2020 		}
2021 		if (j == 0x0a) {
2022 			goto u3p_cmd;
2023 		}
2024 		if (j == 0x0e) {
2025 			goto u3p_out;
2026 		}
2027 		continue;
2028 u3p_cmd:
2029 		atp_writeb_io(dev, c, 0x10, 0x30);
2030 		atp_writeb_io(dev, c, 0x14, 0x00);
2031 		atp_writeb_io(dev, c, 0x18, 0x08);
2032 
2033 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00);
2034 
2035 		j = atp_readb_io(dev, c, 0x17);
2036 		if (j != 0x16) {
2037 			if (j == 0x4e) {
2038 				goto u3p_out;
2039 			}
2040 			continue;
2041 		}
2042 		if (mbuf[0] != 0x01) {
2043 			goto chg_wide;
2044 		}
2045 		if (mbuf[1] != 0x06) {
2046 			goto chg_wide;
2047 		}
2048 		if (mbuf[2] != 0x04) {
2049 			goto chg_wide;
2050 		}
2051 		if (mbuf[3] == 0x09) {
2052 			m = 1;
2053 			m = m << i;
2054 			dev->wide_id[c] |= m;
2055 			dev->id[c][i].devsp = 0xce;
2056 #ifdef ED_DBGP
2057 			printk("dev->id[%2d][%2d].devsp = %2x\n",
2058 			       c, i, dev->id[c][i].devsp);
2059 #endif
2060 			continue;
2061 		}
2062 chg_wide:
2063 		atp_writeb_io(dev, c, 0x1b, 0x01);
2064 		atp_writeb_io(dev, c, 3, satn[0]);
2065 		atp_writeb_io(dev, c, 4, satn[1]);
2066 		atp_writeb_io(dev, c, 5, satn[2]);
2067 		atp_writeb_io(dev, c, 6, satn[3]);
2068 		atp_writeb_io(dev, c, 7, satn[4]);
2069 		atp_writeb_io(dev, c, 8, satn[5]);
2070 		atp_writeb_io(dev, c, 0x0f, 0);
2071 		atp_writeb_io(dev, c, 0x11, dev->id[c][i].devsp);
2072 		atp_writeb_io(dev, c, 0x12, 0);
2073 		atp_writeb_io(dev, c, 0x13, satn[6]);
2074 		atp_writeb_io(dev, c, 0x14, satn[7]);
2075 		atp_writeb_io(dev, c, 0x18, satn[8]);
2076 
2077 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
2078 			cpu_relax();
2079 
2080 		if (atp_readb_io(dev, c, 0x17) != 0x11 &&
2081 		    atp_readb_io(dev, c, 0x17) != 0x8e)
2082 			continue;
2083 
2084 		while (atp_readb_io(dev, c, 0x17) != 0x8e)
2085 			cpu_relax();
2086 
2087 try_wide:
2088 		j = 0;
2089 		atp_writeb_io(dev, c, 0x14, 0x05);
2090 		atp_writeb_io(dev, c, 0x18, 0x20);
2091 
2092 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0) {
2093 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0)
2094 				atp_writeb_io(dev, c, 0x19, wide[j++]);
2095 			cpu_relax();
2096 		}
2097 
2098 		while ((atp_readb_io(dev, c, 0x17) & 0x80) == 0x00)
2099 			cpu_relax();
2100 
2101 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
2102 		if (j == 0x0f) {
2103 			goto widep_in;
2104 		}
2105 		if (j == 0x0a) {
2106 			goto widep_cmd;
2107 		}
2108 		if (j == 0x0e) {
2109 			goto try_wide;
2110 		}
2111 		continue;
2112 widep_out:
2113 		atp_writeb_io(dev, c, 0x18, 0x20);
2114 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0) {
2115 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0)
2116 				atp_writeb_io(dev, c, 0x19, 0);
2117 			cpu_relax();
2118 		}
2119 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
2120 		if (j == 0x0f) {
2121 			goto widep_in;
2122 		}
2123 		if (j == 0x0a) {
2124 			goto widep_cmd;
2125 		}
2126 		if (j == 0x0e) {
2127 			goto widep_out;
2128 		}
2129 		continue;
2130 widep_in:
2131 		atp_writeb_io(dev, c, 0x14, 0xff);
2132 		atp_writeb_io(dev, c, 0x18, 0x20);
2133 		k = 0;
2134 widep_in1:
2135 		j = atp_readb_io(dev, c, 0x1f);
2136 		if ((j & 0x01) != 0) {
2137 			mbuf[k++] = atp_readb_io(dev, c, 0x19);
2138 			goto widep_in1;
2139 		}
2140 		if ((j & 0x80) == 0x00) {
2141 			goto widep_in1;
2142 		}
2143 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
2144 		if (j == 0x0f) {
2145 			goto widep_in;
2146 		}
2147 		if (j == 0x0a) {
2148 			goto widep_cmd;
2149 		}
2150 		if (j == 0x0e) {
2151 			goto widep_out;
2152 		}
2153 		continue;
2154 widep_cmd:
2155 		atp_writeb_io(dev, c, 0x10, 0x30);
2156 		atp_writeb_io(dev, c, 0x14, 0x00);
2157 		atp_writeb_io(dev, c, 0x18, 0x08);
2158 
2159 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
2160 			cpu_relax();
2161 
2162 		j = atp_readb_io(dev, c, 0x17);
2163 		if (j != 0x16) {
2164 			if (j == 0x4e) {
2165 				goto widep_out;
2166 			}
2167 			continue;
2168 		}
2169 		if (mbuf[0] != 0x01) {
2170 			goto not_wide;
2171 		}
2172 		if (mbuf[1] != 0x02) {
2173 			goto not_wide;
2174 		}
2175 		if (mbuf[2] != 0x03) {
2176 			goto not_wide;
2177 		}
2178 		if (mbuf[3] != 0x01) {
2179 			goto not_wide;
2180 		}
2181 		m = 1;
2182 		m = m << i;
2183 		dev->wide_id[c] |= m;
2184 not_wide:
2185 		if ((dev->id[c][i].devtype == 0x00) ||
2186 		    (dev->id[c][i].devtype == 0x07) ||
2187 		    ((dev->id[c][i].devtype == 0x05) && ((n & 0x10) != 0))) {
2188 			m = 1;
2189 			m = m << i;
2190 			if ((dev->async[c] & m) != 0) {
2191 				goto set_sync;
2192 			}
2193 		}
2194 		continue;
2195 set_sync:
2196 		if ((!is885(dev) && !is880(dev)) || (dev->sp[c][i] == 0x02)) {
2197 			synu[4] = 0x0c;
2198 			synuw[4] = 0x0c;
2199 		} else {
2200 			if (dev->sp[c][i] >= 0x03) {
2201 				synu[4] = 0x0a;
2202 				synuw[4] = 0x0a;
2203 			}
2204 		}
2205 		j = 0;
2206 		if ((m & dev->wide_id[c]) != 0) {
2207 			j |= 0x01;
2208 		}
2209 		atp_writeb_io(dev, c, 0x1b, j);
2210 		atp_writeb_io(dev, c, 3, satn[0]);
2211 		atp_writeb_io(dev, c, 4, satn[1]);
2212 		atp_writeb_io(dev, c, 5, satn[2]);
2213 		atp_writeb_io(dev, c, 6, satn[3]);
2214 		atp_writeb_io(dev, c, 7, satn[4]);
2215 		atp_writeb_io(dev, c, 8, satn[5]);
2216 		atp_writeb_io(dev, c, 0x0f, 0);
2217 		atp_writeb_io(dev, c, 0x11, dev->id[c][i].devsp);
2218 		atp_writeb_io(dev, c, 0x12, 0);
2219 		atp_writeb_io(dev, c, 0x13, satn[6]);
2220 		atp_writeb_io(dev, c, 0x14, satn[7]);
2221 		atp_writeb_io(dev, c, 0x18, satn[8]);
2222 
2223 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
2224 			cpu_relax();
2225 
2226 		if (atp_readb_io(dev, c, 0x17) != 0x11 &&
2227 		    atp_readb_io(dev, c, 0x17) != 0x8e)
2228 			continue;
2229 
2230 		while (atp_readb_io(dev, c, 0x17) != 0x8e)
2231 			cpu_relax();
2232 
2233 try_sync:
2234 		j = 0;
2235 		atp_writeb_io(dev, c, 0x14, 0x06);
2236 		atp_writeb_io(dev, c, 0x18, 0x20);
2237 
2238 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0) {
2239 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0) {
2240 				if ((m & dev->wide_id[c]) != 0) {
2241 					if (is885(dev) || is880(dev)) {
2242 						if ((m & dev->ultra_map[c]) != 0) {
2243 							atp_writeb_io(dev, c, 0x19, synuw[j++]);
2244 						} else {
2245 							atp_writeb_io(dev, c, 0x19, synw[j++]);
2246 						}
2247 					} else
2248 						atp_writeb_io(dev, c, 0x19, synw_870[j++]);
2249 				} else {
2250 					if ((m & dev->ultra_map[c]) != 0) {
2251 						atp_writeb_io(dev, c, 0x19, synu[j++]);
2252 					} else {
2253 						atp_writeb_io(dev, c, 0x19, synn[j++]);
2254 					}
2255 				}
2256 			}
2257 		}
2258 
2259 		while ((atp_readb_io(dev, c, 0x17) & 0x80) == 0x00)
2260 			cpu_relax();
2261 
2262 		j = atp_readb_io(dev, c, 0x17) & 0x0f;
2263 		if (j == 0x0f) {
2264 			goto phase_ins;
2265 		}
2266 		if (j == 0x0a) {
2267 			goto phase_cmds;
2268 		}
2269 		if (j == 0x0e) {
2270 			goto try_sync;
2271 		}
2272 		continue;
2273 phase_outs:
2274 		atp_writeb_io(dev, c, 0x18, 0x20);
2275 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00) {
2276 			if ((atp_readb_io(dev, c, 0x1f) & 0x01) != 0x00)
2277 				atp_writeb_io(dev, c, 0x19, 0x00);
2278 			cpu_relax();
2279 		}
2280 		j = atp_readb_io(dev, c, 0x17);
2281 		if (j == 0x85) {
2282 			goto tar_dcons;
2283 		}
2284 		j &= 0x0f;
2285 		if (j == 0x0f) {
2286 			goto phase_ins;
2287 		}
2288 		if (j == 0x0a) {
2289 			goto phase_cmds;
2290 		}
2291 		if (j == 0x0e) {
2292 			goto phase_outs;
2293 		}
2294 		continue;
2295 phase_ins:
2296 		if (is885(dev) || is880(dev))
2297 			atp_writeb_io(dev, c, 0x14, 0x06);
2298 		else
2299 			atp_writeb_io(dev, c, 0x14, 0xff);
2300 		atp_writeb_io(dev, c, 0x18, 0x20);
2301 		k = 0;
2302 phase_ins1:
2303 		j = atp_readb_io(dev, c, 0x1f);
2304 		if ((j & 0x01) != 0x00) {
2305 			mbuf[k++] = atp_readb_io(dev, c, 0x19);
2306 			goto phase_ins1;
2307 		}
2308 		if ((j & 0x80) == 0x00) {
2309 			goto phase_ins1;
2310 		}
2311 
2312 		while ((atp_readb_io(dev, c, 0x17) & 0x80) == 0x00);
2313 
2314 		j = atp_readb_io(dev, c, 0x17);
2315 		if (j == 0x85) {
2316 			goto tar_dcons;
2317 		}
2318 		j &= 0x0f;
2319 		if (j == 0x0f) {
2320 			goto phase_ins;
2321 		}
2322 		if (j == 0x0a) {
2323 			goto phase_cmds;
2324 		}
2325 		if (j == 0x0e) {
2326 			goto phase_outs;
2327 		}
2328 		continue;
2329 phase_cmds:
2330 		atp_writeb_io(dev, c, 0x10, 0x30);
2331 tar_dcons:
2332 		atp_writeb_io(dev, c, 0x14, 0x00);
2333 		atp_writeb_io(dev, c, 0x18, 0x08);
2334 
2335 		while ((atp_readb_io(dev, c, 0x1f) & 0x80) == 0x00)
2336 			cpu_relax();
2337 
2338 		j = atp_readb_io(dev, c, 0x17);
2339 		if (j != 0x16) {
2340 			continue;
2341 		}
2342 		if (mbuf[0] != 0x01) {
2343 			continue;
2344 		}
2345 		if (mbuf[1] != 0x03) {
2346 			continue;
2347 		}
2348 		if (mbuf[4] == 0x00) {
2349 			continue;
2350 		}
2351 		if (mbuf[3] > 0x64) {
2352 			continue;
2353 		}
2354 		if (is885(dev) || is880(dev)) {
2355 			if (mbuf[4] > 0x0e) {
2356 				mbuf[4] = 0x0e;
2357 			}
2358 		} else {
2359 			if (mbuf[4] > 0x0c) {
2360 				mbuf[4] = 0x0c;
2361 			}
2362 		}
2363 		dev->id[c][i].devsp = mbuf[4];
2364 		if (is885(dev) || is880(dev))
2365 			if (mbuf[3] < 0x0c) {
2366 				j = 0xb0;
2367 				goto set_syn_ok;
2368 			}
2369 		if ((mbuf[3] < 0x0d) && (rmb == 0)) {
2370 			j = 0xa0;
2371 			goto set_syn_ok;
2372 		}
2373 		if (mbuf[3] < 0x1a) {
2374 			j = 0x20;
2375 			goto set_syn_ok;
2376 		}
2377 		if (mbuf[3] < 0x33) {
2378 			j = 0x40;
2379 			goto set_syn_ok;
2380 		}
2381 		if (mbuf[3] < 0x4c) {
2382 			j = 0x50;
2383 			goto set_syn_ok;
2384 		}
2385 		j = 0x60;
2386 set_syn_ok:
2387 		dev->id[c][i].devsp = (dev->id[c][i].devsp & 0x0f) | j;
2388 #ifdef ED_DBGP
2389 		printk("dev->id[%2d][%2d].devsp = %2x\n",
2390 		       c,i,dev->id[c][i].devsp);
2391 #endif
2392 	}
2393 }
2394