rx.c revision 5a0e3ad6af8660be21ca98a971cd00f331318c05
1/*
2 *	Adaptec AAC series RAID controller driver
3 *	(c) Copyright 2001 Red Hat Inc.
4 *
5 * based on the old aacraid driver that is..
6 * Adaptec aacraid device driver for Linux.
7 *
8 * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2, or (at your option)
13 * any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; see the file COPYING.  If not, write to
22 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 * Module Name:
25 *  rx.c
26 *
27 * Abstract: Hardware miniport for Drawbridge specific hardware functions.
28 *
29 */
30
31#include <linux/kernel.h>
32#include <linux/init.h>
33#include <linux/types.h>
34#include <linux/pci.h>
35#include <linux/spinlock.h>
36#include <linux/blkdev.h>
37#include <linux/delay.h>
38#include <linux/completion.h>
39#include <linux/time.h>
40#include <linux/interrupt.h>
41
42#include <scsi/scsi_host.h>
43
44#include "aacraid.h"
45
46static irqreturn_t aac_rx_intr_producer(int irq, void *dev_id)
47{
48	struct aac_dev *dev = dev_id;
49	unsigned long bellbits;
50	u8 intstat = rx_readb(dev, MUnit.OISR);
51
52	/*
53	 *	Read mask and invert because drawbridge is reversed.
54	 *	This allows us to only service interrupts that have
55	 *	been enabled.
56	 *	Check to see if this is our interrupt.  If it isn't just return
57	 */
58	if (likely(intstat & ~(dev->OIMR))) {
59		bellbits = rx_readl(dev, OutboundDoorbellReg);
60		if (unlikely(bellbits & DoorBellPrintfReady)) {
61			aac_printf(dev, readl (&dev->IndexRegs->Mailbox[5]));
62			rx_writel(dev, MUnit.ODR,DoorBellPrintfReady);
63			rx_writel(dev, InboundDoorbellReg,DoorBellPrintfDone);
64		}
65		else if (unlikely(bellbits & DoorBellAdapterNormCmdReady)) {
66			rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdReady);
67			aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
68		}
69		else if (likely(bellbits & DoorBellAdapterNormRespReady)) {
70			rx_writel(dev, MUnit.ODR,DoorBellAdapterNormRespReady);
71			aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
72		}
73		else if (unlikely(bellbits & DoorBellAdapterNormCmdNotFull)) {
74			rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
75		}
76		else if (unlikely(bellbits & DoorBellAdapterNormRespNotFull)) {
77			rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
78			rx_writel(dev, MUnit.ODR, DoorBellAdapterNormRespNotFull);
79		}
80		return IRQ_HANDLED;
81	}
82	return IRQ_NONE;
83}
84
85static irqreturn_t aac_rx_intr_message(int irq, void *dev_id)
86{
87	struct aac_dev *dev = dev_id;
88	u32 Index = rx_readl(dev, MUnit.OutboundQueue);
89	if (unlikely(Index == 0xFFFFFFFFL))
90		Index = rx_readl(dev, MUnit.OutboundQueue);
91	if (likely(Index != 0xFFFFFFFFL)) {
92		do {
93			if (unlikely(aac_intr_normal(dev, Index))) {
94				rx_writel(dev, MUnit.OutboundQueue, Index);
95				rx_writel(dev, MUnit.ODR, DoorBellAdapterNormRespReady);
96			}
97			Index = rx_readl(dev, MUnit.OutboundQueue);
98		} while (Index != 0xFFFFFFFFL);
99		return IRQ_HANDLED;
100	}
101	return IRQ_NONE;
102}
103
104/**
105 *	aac_rx_disable_interrupt	-	Disable interrupts
106 *	@dev: Adapter
107 */
108
109static void aac_rx_disable_interrupt(struct aac_dev *dev)
110{
111	rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
112}
113
114/**
115 *	aac_rx_enable_interrupt_producer	-	Enable interrupts
116 *	@dev: Adapter
117 */
118
119static void aac_rx_enable_interrupt_producer(struct aac_dev *dev)
120{
121	rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
122}
123
124/**
125 *	aac_rx_enable_interrupt_message	-	Enable interrupts
126 *	@dev: Adapter
127 */
128
129static void aac_rx_enable_interrupt_message(struct aac_dev *dev)
130{
131	rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
132}
133
134/**
135 *	rx_sync_cmd	-	send a command and wait
136 *	@dev: Adapter
137 *	@command: Command to execute
138 *	@p1: first parameter
139 *	@ret: adapter status
140 *
141 *	This routine will send a synchronous command to the adapter and wait
142 *	for its	completion.
143 */
144
145static int rx_sync_cmd(struct aac_dev *dev, u32 command,
146	u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
147	u32 *status, u32 * r1, u32 * r2, u32 * r3, u32 * r4)
148{
149	unsigned long start;
150	int ok;
151	/*
152	 *	Write the command into Mailbox 0
153	 */
154	writel(command, &dev->IndexRegs->Mailbox[0]);
155	/*
156	 *	Write the parameters into Mailboxes 1 - 6
157	 */
158	writel(p1, &dev->IndexRegs->Mailbox[1]);
159	writel(p2, &dev->IndexRegs->Mailbox[2]);
160	writel(p3, &dev->IndexRegs->Mailbox[3]);
161	writel(p4, &dev->IndexRegs->Mailbox[4]);
162	/*
163	 *	Clear the synch command doorbell to start on a clean slate.
164	 */
165	rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
166	/*
167	 *	Disable doorbell interrupts
168	 */
169	rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
170	/*
171	 *	Force the completion of the mask register write before issuing
172	 *	the interrupt.
173	 */
174	rx_readb (dev, MUnit.OIMR);
175	/*
176	 *	Signal that there is a new synch command
177	 */
178	rx_writel(dev, InboundDoorbellReg, INBOUNDDOORBELL_0);
179
180	ok = 0;
181	start = jiffies;
182
183	/*
184	 *	Wait up to 30 seconds
185	 */
186	while (time_before(jiffies, start+30*HZ))
187	{
188		udelay(5);	/* Delay 5 microseconds to let Mon960 get info. */
189		/*
190		 *	Mon960 will set doorbell0 bit when it has completed the command.
191		 */
192		if (rx_readl(dev, OutboundDoorbellReg) & OUTBOUNDDOORBELL_0) {
193			/*
194			 *	Clear the doorbell.
195			 */
196			rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
197			ok = 1;
198			break;
199		}
200		/*
201		 *	Yield the processor in case we are slow
202		 */
203		msleep(1);
204	}
205	if (unlikely(ok != 1)) {
206		/*
207		 *	Restore interrupt mask even though we timed out
208		 */
209		aac_adapter_enable_int(dev);
210		return -ETIMEDOUT;
211	}
212	/*
213	 *	Pull the synch status from Mailbox 0.
214	 */
215	if (status)
216		*status = readl(&dev->IndexRegs->Mailbox[0]);
217	if (r1)
218		*r1 = readl(&dev->IndexRegs->Mailbox[1]);
219	if (r2)
220		*r2 = readl(&dev->IndexRegs->Mailbox[2]);
221	if (r3)
222		*r3 = readl(&dev->IndexRegs->Mailbox[3]);
223	if (r4)
224		*r4 = readl(&dev->IndexRegs->Mailbox[4]);
225	/*
226	 *	Clear the synch command doorbell.
227	 */
228	rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
229	/*
230	 *	Restore interrupt mask
231	 */
232	aac_adapter_enable_int(dev);
233	return 0;
234
235}
236
237/**
238 *	aac_rx_interrupt_adapter	-	interrupt adapter
239 *	@dev: Adapter
240 *
241 *	Send an interrupt to the i960 and breakpoint it.
242 */
243
244static void aac_rx_interrupt_adapter(struct aac_dev *dev)
245{
246	rx_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
247}
248
249/**
250 *	aac_rx_notify_adapter		-	send an event to the adapter
251 *	@dev: Adapter
252 *	@event: Event to send
253 *
254 *	Notify the i960 that something it probably cares about has
255 *	happened.
256 */
257
258static void aac_rx_notify_adapter(struct aac_dev *dev, u32 event)
259{
260	switch (event) {
261
262	case AdapNormCmdQue:
263		rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_1);
264		break;
265	case HostNormRespNotFull:
266		rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_4);
267		break;
268	case AdapNormRespQue:
269		rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_2);
270		break;
271	case HostNormCmdNotFull:
272		rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_3);
273		break;
274	case HostShutdown:
275		break;
276	case FastIo:
277		rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_6);
278		break;
279	case AdapPrintfDone:
280		rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_5);
281		break;
282	default:
283		BUG();
284		break;
285	}
286}
287
288/**
289 *	aac_rx_start_adapter		-	activate adapter
290 *	@dev:	Adapter
291 *
292 *	Start up processing on an i960 based AAC adapter
293 */
294
295static void aac_rx_start_adapter(struct aac_dev *dev)
296{
297	struct aac_init *init;
298
299	init = dev->init;
300	init->HostElapsedSeconds = cpu_to_le32(get_seconds());
301	// We can only use a 32 bit address here
302	rx_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
303	  0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
304}
305
306/**
307 *	aac_rx_check_health
308 *	@dev: device to check if healthy
309 *
310 *	Will attempt to determine if the specified adapter is alive and
311 *	capable of handling requests, returning 0 if alive.
312 */
313static int aac_rx_check_health(struct aac_dev *dev)
314{
315	u32 status = rx_readl(dev, MUnit.OMRx[0]);
316
317	/*
318	 *	Check to see if the board failed any self tests.
319	 */
320	if (unlikely(status & SELF_TEST_FAILED))
321		return -1;
322	/*
323	 *	Check to see if the board panic'd.
324	 */
325	if (unlikely(status & KERNEL_PANIC)) {
326		char * buffer;
327		struct POSTSTATUS {
328			__le32 Post_Command;
329			__le32 Post_Address;
330		} * post;
331		dma_addr_t paddr, baddr;
332		int ret;
333
334		if (likely((status & 0xFF000000L) == 0xBC000000L))
335			return (status >> 16) & 0xFF;
336		buffer = pci_alloc_consistent(dev->pdev, 512, &baddr);
337		ret = -2;
338		if (unlikely(buffer == NULL))
339			return ret;
340		post = pci_alloc_consistent(dev->pdev,
341		  sizeof(struct POSTSTATUS), &paddr);
342		if (unlikely(post == NULL)) {
343			pci_free_consistent(dev->pdev, 512, buffer, baddr);
344			return ret;
345		}
346		memset(buffer, 0, 512);
347		post->Post_Command = cpu_to_le32(COMMAND_POST_RESULTS);
348		post->Post_Address = cpu_to_le32(baddr);
349		rx_writel(dev, MUnit.IMRx[0], paddr);
350		rx_sync_cmd(dev, COMMAND_POST_RESULTS, baddr, 0, 0, 0, 0, 0,
351		  NULL, NULL, NULL, NULL, NULL);
352		pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
353		  post, paddr);
354		if (likely((buffer[0] == '0') && ((buffer[1] == 'x') || (buffer[1] == 'X')))) {
355			ret = (buffer[2] <= '9') ? (buffer[2] - '0') : (buffer[2] - 'A' + 10);
356			ret <<= 4;
357			ret += (buffer[3] <= '9') ? (buffer[3] - '0') : (buffer[3] - 'A' + 10);
358		}
359		pci_free_consistent(dev->pdev, 512, buffer, baddr);
360		return ret;
361	}
362	/*
363	 *	Wait for the adapter to be up and running.
364	 */
365	if (unlikely(!(status & KERNEL_UP_AND_RUNNING)))
366		return -3;
367	/*
368	 *	Everything is OK
369	 */
370	return 0;
371}
372
373/**
374 *	aac_rx_deliver_producer
375 *	@fib: fib to issue
376 *
377 *	Will send a fib, returning 0 if successful.
378 */
379int aac_rx_deliver_producer(struct fib * fib)
380{
381	struct aac_dev *dev = fib->dev;
382	struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
383	unsigned long qflags;
384	u32 Index;
385	unsigned long nointr = 0;
386
387	spin_lock_irqsave(q->lock, qflags);
388	aac_queue_get( dev, &Index, AdapNormCmdQueue, fib->hw_fib_va, 1, fib, &nointr);
389
390	q->numpending++;
391	*(q->headers.producer) = cpu_to_le32(Index + 1);
392	spin_unlock_irqrestore(q->lock, qflags);
393	if (!(nointr & aac_config.irq_mod))
394		aac_adapter_notify(dev, AdapNormCmdQueue);
395
396	return 0;
397}
398
399/**
400 *	aac_rx_deliver_message
401 *	@fib: fib to issue
402 *
403 *	Will send a fib, returning 0 if successful.
404 */
405static int aac_rx_deliver_message(struct fib * fib)
406{
407	struct aac_dev *dev = fib->dev;
408	struct aac_queue *q = &dev->queues->queue[AdapNormCmdQueue];
409	unsigned long qflags;
410	u32 Index;
411	u64 addr;
412	volatile void __iomem *device;
413
414	unsigned long count = 10000000L; /* 50 seconds */
415	spin_lock_irqsave(q->lock, qflags);
416	q->numpending++;
417	spin_unlock_irqrestore(q->lock, qflags);
418	for(;;) {
419		Index = rx_readl(dev, MUnit.InboundQueue);
420		if (unlikely(Index == 0xFFFFFFFFL))
421			Index = rx_readl(dev, MUnit.InboundQueue);
422		if (likely(Index != 0xFFFFFFFFL))
423			break;
424		if (--count == 0) {
425			spin_lock_irqsave(q->lock, qflags);
426			q->numpending--;
427			spin_unlock_irqrestore(q->lock, qflags);
428			return -ETIMEDOUT;
429		}
430		udelay(5);
431	}
432	device = dev->base + Index;
433	addr = fib->hw_fib_pa;
434	writel((u32)(addr & 0xffffffff), device);
435	device += sizeof(u32);
436	writel((u32)(addr >> 32), device);
437	device += sizeof(u32);
438	writel(le16_to_cpu(fib->hw_fib_va->header.Size), device);
439	rx_writel(dev, MUnit.InboundQueue, Index);
440	return 0;
441}
442
443/**
444 *	aac_rx_ioremap
445 *	@size: mapping resize request
446 *
447 */
448static int aac_rx_ioremap(struct aac_dev * dev, u32 size)
449{
450	if (!size) {
451		iounmap(dev->regs.rx);
452		return 0;
453	}
454	dev->base = dev->regs.rx = ioremap(dev->scsi_host_ptr->base, size);
455	if (dev->base == NULL)
456		return -1;
457	dev->IndexRegs = &dev->regs.rx->IndexRegs;
458	return 0;
459}
460
461static int aac_rx_restart_adapter(struct aac_dev *dev, int bled)
462{
463	u32 var;
464
465	if (!(dev->supplement_adapter_info.SupportedOptions2 &
466	  AAC_OPTION_MU_RESET) || (bled >= 0) || (bled == -2)) {
467		if (bled)
468			printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
469				dev->name, dev->id, bled);
470		else {
471			bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
472			  0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
473			if (!bled && (var != 0x00000001) && (var != 0x3803000F))
474				bled = -EINVAL;
475		}
476		if (bled && (bled != -ETIMEDOUT))
477			bled = aac_adapter_sync_cmd(dev, IOP_RESET,
478			  0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
479
480		if (bled && (bled != -ETIMEDOUT))
481			return -EINVAL;
482	}
483	if (bled || (var == 0x3803000F)) { /* USE_OTHER_METHOD */
484		rx_writel(dev, MUnit.reserved2, 3);
485		msleep(5000); /* Delay 5 seconds */
486		var = 0x00000001;
487	}
488	if (var != 0x00000001)
489		return -EINVAL;
490	if (rx_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC)
491		return -ENODEV;
492	if (startup_timeout < 300)
493		startup_timeout = 300;
494	return 0;
495}
496
497/**
498 *	aac_rx_select_comm	-	Select communications method
499 *	@dev: Adapter
500 *	@comm: communications method
501 */
502
503int aac_rx_select_comm(struct aac_dev *dev, int comm)
504{
505	switch (comm) {
506	case AAC_COMM_PRODUCER:
507		dev->a_ops.adapter_enable_int = aac_rx_enable_interrupt_producer;
508		dev->a_ops.adapter_intr = aac_rx_intr_producer;
509		dev->a_ops.adapter_deliver = aac_rx_deliver_producer;
510		break;
511	case AAC_COMM_MESSAGE:
512		dev->a_ops.adapter_enable_int = aac_rx_enable_interrupt_message;
513		dev->a_ops.adapter_intr = aac_rx_intr_message;
514		dev->a_ops.adapter_deliver = aac_rx_deliver_message;
515		break;
516	default:
517		return 1;
518	}
519	return 0;
520}
521
522/**
523 *	aac_rx_init	-	initialize an i960 based AAC card
524 *	@dev: device to configure
525 *
526 *	Allocate and set up resources for the i960 based AAC variants. The
527 *	device_interface in the commregion will be allocated and linked
528 *	to the comm region.
529 */
530
531int _aac_rx_init(struct aac_dev *dev)
532{
533	unsigned long start;
534	unsigned long status;
535	int restart = 0;
536	int instance = dev->id;
537	const char * name = dev->name;
538
539	if (aac_adapter_ioremap(dev, dev->base_size)) {
540		printk(KERN_WARNING "%s: unable to map adapter.\n", name);
541		goto error_iounmap;
542	}
543
544	/* Failure to reset here is an option ... */
545	dev->a_ops.adapter_sync_cmd = rx_sync_cmd;
546	dev->a_ops.adapter_enable_int = aac_rx_disable_interrupt;
547	dev->OIMR = status = rx_readb (dev, MUnit.OIMR);
548	if ((((status & 0x0c) != 0x0c) || aac_reset_devices || reset_devices) &&
549	  !aac_rx_restart_adapter(dev, 0))
550		/* Make sure the Hardware FIFO is empty */
551		while ((++restart < 512) &&
552		  (rx_readl(dev, MUnit.OutboundQueue) != 0xFFFFFFFFL));
553	/*
554	 *	Check to see if the board panic'd while booting.
555	 */
556	status = rx_readl(dev, MUnit.OMRx[0]);
557	if (status & KERNEL_PANIC) {
558		if (aac_rx_restart_adapter(dev, aac_rx_check_health(dev)))
559			goto error_iounmap;
560		++restart;
561	}
562	/*
563	 *	Check to see if the board failed any self tests.
564	 */
565	status = rx_readl(dev, MUnit.OMRx[0]);
566	if (status & SELF_TEST_FAILED) {
567		printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
568		goto error_iounmap;
569	}
570	/*
571	 *	Check to see if the monitor panic'd while booting.
572	 */
573	if (status & MONITOR_PANIC) {
574		printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
575		goto error_iounmap;
576	}
577	start = jiffies;
578	/*
579	 *	Wait for the adapter to be up and running. Wait up to 3 minutes
580	 */
581	while (!((status = rx_readl(dev, MUnit.OMRx[0])) & KERNEL_UP_AND_RUNNING))
582	{
583		if ((restart &&
584		  (status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC))) ||
585		  time_after(jiffies, start+HZ*startup_timeout)) {
586			printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
587					dev->name, instance, status);
588			goto error_iounmap;
589		}
590		if (!restart &&
591		  ((status & (KERNEL_PANIC|SELF_TEST_FAILED|MONITOR_PANIC)) ||
592		  time_after(jiffies, start + HZ *
593		  ((startup_timeout > 60)
594		    ? (startup_timeout - 60)
595		    : (startup_timeout / 2))))) {
596			if (likely(!aac_rx_restart_adapter(dev, aac_rx_check_health(dev))))
597				start = jiffies;
598			++restart;
599		}
600		msleep(1);
601	}
602	if (restart && aac_commit)
603		aac_commit = 1;
604	/*
605	 *	Fill in the common function dispatch table.
606	 */
607	dev->a_ops.adapter_interrupt = aac_rx_interrupt_adapter;
608	dev->a_ops.adapter_disable_int = aac_rx_disable_interrupt;
609	dev->a_ops.adapter_notify = aac_rx_notify_adapter;
610	dev->a_ops.adapter_sync_cmd = rx_sync_cmd;
611	dev->a_ops.adapter_check_health = aac_rx_check_health;
612	dev->a_ops.adapter_restart = aac_rx_restart_adapter;
613
614	/*
615	 *	First clear out all interrupts.  Then enable the one's that we
616	 *	can handle.
617	 */
618	aac_adapter_comm(dev, AAC_COMM_PRODUCER);
619	aac_adapter_disable_int(dev);
620	rx_writel(dev, MUnit.ODR, 0xffffffff);
621	aac_adapter_enable_int(dev);
622
623	if (aac_init_adapter(dev) == NULL)
624		goto error_iounmap;
625	aac_adapter_comm(dev, dev->comm_interface);
626	dev->msi = aac_msi && !pci_enable_msi(dev->pdev);
627	if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
628			IRQF_SHARED|IRQF_DISABLED, "aacraid", dev) < 0) {
629		if (dev->msi)
630			pci_disable_msi(dev->pdev);
631		printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
632			name, instance);
633		goto error_iounmap;
634	}
635	aac_adapter_enable_int(dev);
636	/*
637	 *	Tell the adapter that all is configured, and it can
638	 * start accepting requests
639	 */
640	aac_rx_start_adapter(dev);
641
642	return 0;
643
644error_iounmap:
645
646	return -1;
647}
648
649int aac_rx_init(struct aac_dev *dev)
650{
651	/*
652	 *	Fill in the function dispatch table.
653	 */
654	dev->a_ops.adapter_ioremap = aac_rx_ioremap;
655	dev->a_ops.adapter_comm = aac_rx_select_comm;
656
657	return _aac_rx_init(dev);
658}
659