[deliverable/linux.git] / drivers / scsi / aacraid / sa.c

/*
 *	Adaptec AAC series RAID controller driver
 *	(c) Copyright 2001 Red Hat Inc.	<alan@redhat.com>
 *
 * based on the old aacraid driver that is..
 * Adaptec aacraid device driver for Linux.
 *
 * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Module Name:
 *  sa.c
 *
 * Abstract: Drawbridge specific support functions
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/completion.h>
#include <linux/time.h>
#include <linux/interrupt.h>
#include <asm/semaphore.h>

#include <scsi/scsi_host.h>

#include "aacraid.h"

static irqreturn_t aac_sa_intr(int irq, void *dev_id, struct pt_regs *regs)
{
	struct aac_dev *dev = dev_id;
	unsigned short intstat, mask;

	intstat = sa_readw(dev, DoorbellReg_p);
	/*
	 *	Read mask and invert because drawbridge is reversed.
	 *	This allows us to only service interrupts that have been enabled.
	 */
	mask = ~(sa_readw(dev, SaDbCSR.PRISETIRQMASK));

	/* Check to see if this is our interrupt.  If it isn't just return */

	if (intstat & mask) {
		if (intstat & PrintfReady) {
			aac_printf(dev, sa_readl(dev, Mailbox5));
			sa_writew(dev, DoorbellClrReg_p, PrintfReady); /* clear PrintfReady */
			sa_writew(dev, DoorbellReg_s, PrintfDone);
		} else if (intstat & DOORBELL_1) {	// dev -> Host Normal Command Ready
			aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
			sa_writew(dev, DoorbellClrReg_p, DOORBELL_1);
		} else if (intstat & DOORBELL_2) {	// dev -> Host Normal Response Ready
			aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
			sa_writew(dev, DoorbellClrReg_p, DOORBELL_2);
		} else if (intstat & DOORBELL_3) {	// dev -> Host Normal Command Not Full
			sa_writew(dev, DoorbellClrReg_p, DOORBELL_3);
		} else if (intstat & DOORBELL_4) {	// dev -> Host Normal Response Not Full
			sa_writew(dev, DoorbellClrReg_p, DOORBELL_4);
		}
		return IRQ_HANDLED;
	}
	return IRQ_NONE;
}

/**
 *	aac_sa_disable_interrupt	-	disable interrupt
 *	@dev: Which adapter to enable.
 */

static void aac_sa_disable_interrupt (struct aac_dev *dev)
{
	sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
}

/**
 *	aac_sa_notify_adapter		-	handle adapter notification
 *	@dev:	Adapter that notification is for
 *	@event:	Event to notidy
 *
 *	Notify the adapter of an event
 */
 
static void aac_sa_notify_adapter(struct aac_dev *dev, u32 event)
{
	switch (event) {

	case AdapNormCmdQue:
		sa_writew(dev, DoorbellReg_s,DOORBELL_1);
		break;
	case HostNormRespNotFull:
		sa_writew(dev, DoorbellReg_s,DOORBELL_4);
		break;
	case AdapNormRespQue:
		sa_writew(dev, DoorbellReg_s,DOORBELL_2);
		break;
	case HostNormCmdNotFull:
		sa_writew(dev, DoorbellReg_s,DOORBELL_3);
		break;
	case HostShutdown:
		/*
		sa_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
		NULL, NULL, NULL, NULL, NULL);
		*/
		break;
	case FastIo:
		sa_writew(dev, DoorbellReg_s,DOORBELL_6);
		break;
	case AdapPrintfDone:
		sa_writew(dev, DoorbellReg_s,DOORBELL_5);
		break;
	default:
		BUG();
		break;
	}
}


/**
 *	sa_sync_cmd	-	send a command and wait
 *	@dev: Adapter
 *	@command: Command to execute
 *	@p1: first parameter
 *	@ret: adapter status
 *
 *	This routine will send a synchronous command to the adapter and wait 
 *	for its	completion.
 */

static int sa_sync_cmd(struct aac_dev *dev, u32 command, 
		u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
		u32 *ret, u32 *r1, u32 *r2, u32 *r3, u32 *r4)
{
	unsigned long start;
 	int ok;
	/*
	 *	Write the Command into Mailbox 0
	 */
	sa_writel(dev, Mailbox0, command);
	/*
	 *	Write the parameters into Mailboxes 1 - 4
	 */
	sa_writel(dev, Mailbox1, p1);
	sa_writel(dev, Mailbox2, p2);
	sa_writel(dev, Mailbox3, p3);
	sa_writel(dev, Mailbox4, p4);

	/*
	 *	Clear the synch command doorbell to start on a clean slate.
	 */
	sa_writew(dev, DoorbellClrReg_p, DOORBELL_0);
	/*
	 *	Signal that there is a new synch command
	 */
	sa_writew(dev, DoorbellReg_s, DOORBELL_0);

	ok = 0;
	start = jiffies;

	while(time_before(jiffies, start+30*HZ))
	{
		/*
		 *	Delay 5uS so that the monitor gets access
		 */
		udelay(5);
		/*
		 *	Mon110 will set doorbell0 bit when it has 
		 *	completed the command.
		 */
		if(sa_readw(dev, DoorbellReg_p) & DOORBELL_0)  {
			ok = 1;
			break;
		}
		set_current_state(TASK_UNINTERRUPTIBLE);
		schedule_timeout(1);
	}

	if (ok != 1)
		return -ETIMEDOUT;
	/*
	 *	Clear the synch command doorbell.
	 */
	sa_writew(dev, DoorbellClrReg_p, DOORBELL_0);
	/*
	 *	Pull the synch status from Mailbox 0.
	 */
	if (ret)
		*ret = sa_readl(dev, Mailbox0);
	if (r1)
		*r1 = sa_readl(dev, Mailbox1);
	if (r2)
		*r2 = sa_readl(dev, Mailbox2);
	if (r3)
		*r3 = sa_readl(dev, Mailbox3);
	if (r4)
		*r4 = sa_readl(dev, Mailbox4);
	return 0;
}

/**
 *	aac_sa_interrupt_adapter	-	interrupt an adapter
 *	@dev: Which adapter to enable.
 *
 *	Breakpoint an adapter.
 */
 
static void aac_sa_interrupt_adapter (struct aac_dev *dev)
{
	sa_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0,
			NULL, NULL, NULL, NULL, NULL);
}

/**
 *	aac_sa_start_adapter		-	activate adapter
 *	@dev:	Adapter
 *
 *	Start up processing on an ARM based AAC adapter
 */

static void aac_sa_start_adapter(struct aac_dev *dev)
{
	u32 ret;
	struct aac_init *init;
	/*
	 * Fill in the remaining pieces of the init.
	 */
	init = dev->init;
	init->HostElapsedSeconds = cpu_to_le32(get_seconds());

	/*
	 * Tell the adapter we are back and up and running so it will scan its command
	 * queues and enable our interrupts
	 */
	dev->irq_mask =	(PrintfReady | DOORBELL_1 | DOORBELL_2 | DOORBELL_3 | DOORBELL_4);
	/*
	 *	First clear out all interrupts.  Then enable the one's that 
	 *	we can handle.
	 */
	sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
	sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, (PrintfReady | DOORBELL_1 | DOORBELL_2 | DOORBELL_3 | DOORBELL_4));
	/* We can only use a 32 bit address here */
	sa_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, 
			(u32)(ulong)dev->init_pa, 0, 0, 0, 0, 0,
			&ret, NULL, NULL, NULL, NULL);
}

/**
 *	aac_sa_check_health
 *	@dev: device to check if healthy
 *
 *	Will attempt to determine if the specified adapter is alive and
 *	capable of handling requests, returning 0 if alive.
 */
static int aac_sa_check_health(struct aac_dev *dev)
{
	long status = sa_readl(dev, Mailbox7);

	/*
	 *	Check to see if the board failed any self tests.
	 */
	if (status & SELF_TEST_FAILED)
		return -1;
	/*
	 *	Check to see if the board panic'd while booting.
	 */
	if (status & KERNEL_PANIC)
		return -2;
	/*
	 *	Wait for the adapter to be up and running. Wait up to 3 minutes
	 */
	if (!(status & KERNEL_UP_AND_RUNNING))
		return -3;
	/*
	 *	Everything is OK
	 */
	return 0;
}

/**
 *	aac_sa_init	-	initialize an ARM based AAC card
 *	@dev: device to configure
 *
 *	Allocate and set up resources for the ARM based AAC variants. The 
 *	device_interface in the commregion will be allocated and linked 
 *	to the comm region.
 */

int aac_sa_init(struct aac_dev *dev)
{
	unsigned long start;
	unsigned long status;
	int instance;
	const char *name;

	instance = dev->id;
	name     = dev->name;

	/*
	 *	Map in the registers from the adapter.
	 */

	if((dev->regs.sa = ioremap((unsigned long)dev->scsi_host_ptr->base, 8192))==NULL)
	{	
		printk(KERN_WARNING "aacraid: unable to map ARM.\n" );
		goto error_iounmap;
	}
	/*
	 *	Check to see if the board failed any self tests.
	 */
	if (sa_readl(dev, Mailbox7) & SELF_TEST_FAILED) {
		printk(KERN_WARNING "%s%d: adapter self-test failed.\n", name, instance);
		goto error_iounmap;
	}
	/*
	 *	Check to see if the board panic'd while booting.
	 */
	if (sa_readl(dev, Mailbox7) & KERNEL_PANIC) {
		printk(KERN_WARNING "%s%d: adapter kernel panic'd.\n", name, instance);
		goto error_iounmap;
	}
	start = jiffies;
	/*
	 *	Wait for the adapter to be up and running. Wait up to 3 minutes.
	 */
	while (!(sa_readl(dev, Mailbox7) & KERNEL_UP_AND_RUNNING)) {
		if (time_after(jiffies, start+180*HZ)) {
			status = sa_readl(dev, Mailbox7);
			printk(KERN_WARNING "%s%d: adapter kernel failed to start, init status = %lx.\n", 
					name, instance, status);
			goto error_iounmap;
		}
		set_current_state(TASK_UNINTERRUPTIBLE);
		schedule_timeout(1);
	}

	if (request_irq(dev->scsi_host_ptr->irq, aac_sa_intr, SA_SHIRQ|SA_INTERRUPT, "aacraid", (void *)dev ) < 0) {
		printk(KERN_WARNING "%s%d: Interrupt unavailable.\n", name, instance);
		goto error_iounmap;
	}

	/*
	 *	Fill in the function dispatch table.
	 */

	dev->a_ops.adapter_interrupt = aac_sa_interrupt_adapter;
	dev->a_ops.adapter_disable_int = aac_sa_disable_interrupt;
	dev->a_ops.adapter_notify = aac_sa_notify_adapter;
	dev->a_ops.adapter_sync_cmd = sa_sync_cmd;
	dev->a_ops.adapter_check_health = aac_sa_check_health;

	/*
	 *	First clear out all interrupts.  Then enable the one's that 
	 *	we can handle.
	 */
	sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
	sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, (PrintfReady | DOORBELL_1 | 
				DOORBELL_2 | DOORBELL_3 | DOORBELL_4));

	if(aac_init_adapter(dev) == NULL)
		goto error_irq;

	/*
	 *	Start any kernel threads needed
	 */
	dev->thread_pid = kernel_thread((int (*)(void *))aac_command_thread, dev, 0);
	if (dev->thread_pid < 0) {
		printk(KERN_ERR "aacraid: Unable to create command thread.\n");
		goto error_kfree;
	}

	/*
	 *	Tell the adapter that all is configure, and it can start 
	 *	accepting requests
	 */
	aac_sa_start_adapter(dev);
	return 0;


error_kfree:
	kfree(dev->queues);

error_irq:
	sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
	free_irq(dev->scsi_host_ptr->irq, (void *)dev);

error_iounmap:
	iounmap(dev->regs.sa);

	return -1;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Adaptec AAC series RAID controller driver
	3	* (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
	4	*
	5	* based on the old aacraid driver that is..
	6	* Adaptec aacraid device driver for Linux.
	7	*
	8	* Copyright (c) 2000 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	* sa.c
	26	*
	27	* Abstract: Drawbridge specific support functions
	28	*
	29	*/
	30
	31	#include <linux/kernel.h>
	32	#include <linux/init.h>
	33	#include <linux/types.h>
	34	#include <linux/sched.h>
	35	#include <linux/pci.h>
	36	#include <linux/spinlock.h>
	37	#include <linux/slab.h>
	38	#include <linux/blkdev.h>
	39	#include <linux/delay.h>
	40	#include <linux/completion.h>
	41	#include <linux/time.h>
	42	#include <linux/interrupt.h>
	43	#include <asm/semaphore.h>
	44
	45	#include <scsi/scsi_host.h>
	46
	47	#include "aacraid.h"
	48
	49	static irqreturn_t aac_sa_intr(int irq, void dev_id, struct pt_regs regs)
	50	{
	51	struct aac_dev *dev = dev_id;
	52	unsigned short intstat, mask;
	53
	54	intstat = sa_readw(dev, DoorbellReg_p);
	55	/*
	56	* Read mask and invert because drawbridge is reversed.
	57	* This allows us to only service interrupts that have been enabled.
	58	*/
	59	mask = ~(sa_readw(dev, SaDbCSR.PRISETIRQMASK));
	60
	61	/* Check to see if this is our interrupt. If it isn't just return */
	62
	63	if (intstat & mask) {
	64	if (intstat & PrintfReady) {
65	aac_printf(dev, sa_readl(dev, Mailbox5));
66	sa_writew(dev, DoorbellClrReg_p, PrintfReady); /* clear PrintfReady */
67	sa_writew(dev, DoorbellReg_s, PrintfDone);
68	} else if (intstat & DOORBELL_1) { // dev -> Host Normal Command Ready
69	aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
70	sa_writew(dev, DoorbellClrReg_p, DOORBELL_1);
71	} else if (intstat & DOORBELL_2) { // dev -> Host Normal Response Ready
72	aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
73	sa_writew(dev, DoorbellClrReg_p, DOORBELL_2);
74	} else if (intstat & DOORBELL_3) { // dev -> Host Normal Command Not Full
75	sa_writew(dev, DoorbellClrReg_p, DOORBELL_3);
76	} else if (intstat & DOORBELL_4) { // dev -> Host Normal Response Not Full
77	sa_writew(dev, DoorbellClrReg_p, DOORBELL_4);
78	}
79	return IRQ_HANDLED;
80	}
81	return IRQ_NONE;
82	}
83
bd1aac80 MH	84	/**
	85	* aac_sa_disable_interrupt - disable interrupt
	86	* @dev: Which adapter to enable.
	87	*/
	88
	89	static void aac_sa_disable_interrupt (struct aac_dev *dev)
	90	{
	91	sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
	92	}
	93
1da177e4 LT	94	/**
	95	* aac_sa_notify_adapter - handle adapter notification
	96	* @dev: Adapter that notification is for
	97	* @event: Event to notidy
	98	*
	99	* Notify the adapter of an event
	100	*/
	101
4833869e	102	static void aac_sa_notify_adapter(struct aac_dev *dev, u32 event)
1da177e4 LT	103	{
	104	switch (event) {
	105
	106	case AdapNormCmdQue:
	107	sa_writew(dev, DoorbellReg_s,DOORBELL_1);
	108	break;
	109	case HostNormRespNotFull:
	110	sa_writew(dev, DoorbellReg_s,DOORBELL_4);
	111	break;
	112	case AdapNormRespQue:
	113	sa_writew(dev, DoorbellReg_s,DOORBELL_2);
	114	break;
	115	case HostNormCmdNotFull:
	116	sa_writew(dev, DoorbellReg_s,DOORBELL_3);
	117	break;
	118	case HostShutdown:
7c00ffa3 MH	119	/*
	120	sa_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
	121	NULL, NULL, NULL, NULL, NULL);
	122	*/
1da177e4 LT	123	break;
	124	case FastIo:
	125	sa_writew(dev, DoorbellReg_s,DOORBELL_6);
	126	break;
	127	case AdapPrintfDone:
	128	sa_writew(dev, DoorbellReg_s,DOORBELL_5);
	129	break;
	130	default:
	131	BUG();
	132	break;
	133	}
	134	}
	135
	136
	137	/**
	138	* sa_sync_cmd - send a command and wait
	139	* @dev: Adapter
	140	* @command: Command to execute
	141	* @p1: first parameter
	142	* @ret: adapter status
	143	*
	144	* This routine will send a synchronous command to the adapter and wait
	145	* for its completion.
	146	*/
	147
7c00ffa3 MH	148	static int sa_sync_cmd(struct aac_dev *dev, u32 command,
	149	u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
	150	u32 ret, u32 r1, u32 r2, u32 r3, u32 *r4)
1da177e4 LT	151	{
	152	unsigned long start;
	153	int ok;
	154	/*
	155	* Write the Command into Mailbox 0
	156	*/
	157	sa_writel(dev, Mailbox0, command);
	158	/*
	159	* Write the parameters into Mailboxes 1 - 4
	160	*/
	161	sa_writel(dev, Mailbox1, p1);
7c00ffa3 MH	162	sa_writel(dev, Mailbox2, p2);
	163	sa_writel(dev, Mailbox3, p3);
	164	sa_writel(dev, Mailbox4, p4);
	165
1da177e4 LT	166	/*
	167	* Clear the synch command doorbell to start on a clean slate.
	168	*/
	169	sa_writew(dev, DoorbellClrReg_p, DOORBELL_0);
	170	/*
	171	* Signal that there is a new synch command
	172	*/
	173	sa_writew(dev, DoorbellReg_s, DOORBELL_0);
	174
	175	ok = 0;
	176	start = jiffies;
	177
	178	while(time_before(jiffies, start+30*HZ))
	179	{
	180	/*
	181	* Delay 5uS so that the monitor gets access
	182	*/
	183	udelay(5);
	184	/*
	185	* Mon110 will set doorbell0 bit when it has
	186	* completed the command.
	187	*/
	188	if(sa_readw(dev, DoorbellReg_p) & DOORBELL_0) {
	189	ok = 1;
	190	break;
	191	}
	192	set_current_state(TASK_UNINTERRUPTIBLE);
	193	schedule_timeout(1);
	194	}
	195
	196	if (ok != 1)
	197	return -ETIMEDOUT;
	198	/*
	199	* Clear the synch command doorbell.
	200	*/
	201	sa_writew(dev, DoorbellClrReg_p, DOORBELL_0);
	202	/*
	203	* Pull the synch status from Mailbox 0.
	204	*/
	205	if (ret)
	206	*ret = sa_readl(dev, Mailbox0);
7c00ffa3 MH	207	if (r1)
	208	*r1 = sa_readl(dev, Mailbox1);
	209	if (r2)
	210	*r2 = sa_readl(dev, Mailbox2);
	211	if (r3)
	212	*r3 = sa_readl(dev, Mailbox3);
	213	if (r4)
	214	*r4 = sa_readl(dev, Mailbox4);
1da177e4 LT	215	return 0;
	216	}
	217
	218	/**
	219	* aac_sa_interrupt_adapter - interrupt an adapter
	220	* @dev: Which adapter to enable.
	221	*
	222	* Breakpoint an adapter.
	223	*/
	224
	225	static void aac_sa_interrupt_adapter (struct aac_dev *dev)
	226	{
7c00ffa3	227	sa_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0,
bd1aac80	228	NULL, NULL, NULL, NULL, NULL);
1da177e4 LT	229	}
	230
	231	/**
	232	* aac_sa_start_adapter - activate adapter
	233	* @dev: Adapter
	234	*
	235	* Start up processing on an ARM based AAC adapter
	236	*/
	237
	238	static void aac_sa_start_adapter(struct aac_dev *dev)
	239	{
	240	u32 ret;
	241	struct aac_init *init;
	242	/*
	243	* Fill in the remaining pieces of the init.
	244	*/
	245	init = dev->init;
	246	init->HostElapsedSeconds = cpu_to_le32(get_seconds());
	247
	248	/*
	249	* Tell the adapter we are back and up and running so it will scan its command
	250	* queues and enable our interrupts
	251	*/
	252	dev->irq_mask = (PrintfReady \| DOORBELL_1 \| DOORBELL_2 \| DOORBELL_3 \| DOORBELL_4);
	253	/*
	254	* First clear out all interrupts. Then enable the one's that
	255	* we can handle.
	256	*/
56b58712	257	sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
1da177e4 LT	258	sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, (PrintfReady \| DOORBELL_1 \| DOORBELL_2 \| DOORBELL_3 \| DOORBELL_4));
1da177e4 LT	259	/* We can only use a 32 bit address here */
7c00ffa3 MH	260	sa_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS,
	261	(u32)(ulong)dev->init_pa, 0, 0, 0, 0, 0,
	262	&ret, NULL, NULL, NULL, NULL);
1da177e4 LT	263	}
	264
	265	/**
	266	* aac_sa_check_health
	267	* @dev: device to check if healthy
	268	*
	269	* Will attempt to determine if the specified adapter is alive and
	270	* capable of handling requests, returning 0 if alive.
	271	*/
	272	static int aac_sa_check_health(struct aac_dev *dev)
	273	{
	274	long status = sa_readl(dev, Mailbox7);
	275
	276	/*
	277	* Check to see if the board failed any self tests.
	278	*/
	279	if (status & SELF_TEST_FAILED)
	280	return -1;
	281	/*
	282	* Check to see if the board panic'd while booting.
	283	*/
	284	if (status & KERNEL_PANIC)
	285	return -2;
	286	/*
	287	* Wait for the adapter to be up and running. Wait up to 3 minutes
	288	*/
	289	if (!(status & KERNEL_UP_AND_RUNNING))
	290	return -3;
	291	/*
	292	* Everything is OK
	293	*/
	294	return 0;
	295	}
	296
	297	/**
	298	* aac_sa_init - initialize an ARM based AAC card
	299	* @dev: device to configure
	300	*
	301	* Allocate and set up resources for the ARM based AAC variants. The
	302	* device_interface in the commregion will be allocated and linked
	303	* to the comm region.
	304	*/
	305
	306	int aac_sa_init(struct aac_dev *dev)
	307	{
	308	unsigned long start;
	309	unsigned long status;
	310	int instance;
	311	const char *name;
	312
	313	instance = dev->id;
	314	name = dev->name;
	315
	316	/*
	317	* Map in the registers from the adapter.
	318	*/
	319
	320	if((dev->regs.sa = ioremap((unsigned long)dev->scsi_host_ptr->base, 8192))==NULL)
	321	{
	322	printk(KERN_WARNING "aacraid: unable to map ARM.\n" );
	323	goto error_iounmap;
	324	}
	325	/*
	326	* Check to see if the board failed any self tests.
327	*/
328	if (sa_readl(dev, Mailbox7) & SELF_TEST_FAILED) {
329	printk(KERN_WARNING "%s%d: adapter self-test failed.\n", name, instance);
330	goto error_iounmap;
331	}
332	/*
333	* Check to see if the board panic'd while booting.
334	*/
335	if (sa_readl(dev, Mailbox7) & KERNEL_PANIC) {
336	printk(KERN_WARNING "%s%d: adapter kernel panic'd.\n", name, instance);
337	goto error_iounmap;
338	}
339	start = jiffies;
340	/*
341	* Wait for the adapter to be up and running. Wait up to 3 minutes.
342	*/
343	while (!(sa_readl(dev, Mailbox7) & KERNEL_UP_AND_RUNNING)) {
344	if (time_after(jiffies, start+180*HZ)) {
345	status = sa_readl(dev, Mailbox7);
346	printk(KERN_WARNING "%s%d: adapter kernel failed to start, init status = %lx.\n",
347	name, instance, status);
348	goto error_iounmap;
349	}
350	set_current_state(TASK_UNINTERRUPTIBLE);
351	schedule_timeout(1);
352	}
353
354	if (request_irq(dev->scsi_host_ptr->irq, aac_sa_intr, SA_SHIRQ\|SA_INTERRUPT, "aacraid", (void *)dev ) < 0) {
355	printk(KERN_WARNING "%s%d: Interrupt unavailable.\n", name, instance);
356	goto error_iounmap;
357	}
358
359	/*
360	* Fill in the function dispatch table.
361	*/
362
363	dev->a_ops.adapter_interrupt = aac_sa_interrupt_adapter;
bd1aac80	364	dev->a_ops.adapter_disable_int = aac_sa_disable_interrupt;
1da177e4 LT	365	dev->a_ops.adapter_notify = aac_sa_notify_adapter;
	366	dev->a_ops.adapter_sync_cmd = sa_sync_cmd;
	367	dev->a_ops.adapter_check_health = aac_sa_check_health;
	368
bd1aac80 MH	369	/*
	370	* First clear out all interrupts. Then enable the one's that
	371	* we can handle.
	372	*/
	373	sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
	374	sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, (PrintfReady \| DOORBELL_1 \|
	375	DOORBELL_2 \| DOORBELL_3 \| DOORBELL_4));
1da177e4 LT	376
	377	if(aac_init_adapter(dev) == NULL)
	378	goto error_irq;
	379
	380	/*
	381	* Start any kernel threads needed
	382	*/
	383	dev->thread_pid = kernel_thread((int ()(void ))aac_command_thread, dev, 0);
	384	if (dev->thread_pid < 0) {
	385	printk(KERN_ERR "aacraid: Unable to create command thread.\n");
	386	goto error_kfree;
	387	}
	388
	389	/*
	390	* Tell the adapter that all is configure, and it can start
	391	* accepting requests
	392	*/
	393	aac_sa_start_adapter(dev);
	394	return 0;
	395
	396
	397	error_kfree:
	398	kfree(dev->queues);
	399
	400	error_irq:
bd1aac80	401	sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
1da177e4 LT	402	free_irq(dev->scsi_host_ptr->irq, (void *)dev);
	403
	404	error_iounmap:
	405	iounmap(dev->regs.sa);
	406
	407	return -1;
	408	}
	409