[linux-2.6-block.git] / drivers / scsi / aacraid / sa.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *	Adaptec AAC series RAID controller driver
 *	(c) Copyright 2001 Red Hat Inc.
 *
 * based on the old aacraid driver that is..
 * Adaptec aacraid device driver for Linux.
 *
 * Copyright (c) 2000-2010 Adaptec, Inc.
 *               2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
 *		 2016-2017 Microsemi Corp. (aacraid@microsemi.com)
 *
 * Module Name:
 *  sa.c
 *
 * Abstract: Drawbridge specific support functions
 */

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

#include <scsi/scsi_host.h>

#include "aacraid.h"

static irqreturn_t aac_sa_intr(int irq, void *dev_id)
{
	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
			sa_writew(dev, DoorbellClrReg_p, DOORBELL_1);
			aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
		} else if (intstat & DOORBELL_2) {	// dev -> Host Normal Response Ready
			sa_writew(dev, DoorbellClrReg_p, DOORBELL_2);
			aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
		} 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_enable_interrupt	-	enable interrupt
 *	@dev: Which adapter to enable.
 */

static void aac_sa_enable_interrupt (struct aac_dev *dev)
{
	sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, (PrintfReady | DOORBELL_1 |
				DOORBELL_2 | DOORBELL_3 | DOORBELL_4));
}

/**
 *	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;
		}
		msleep(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)
{
	union aac_init *init;
	/*
	 * Fill in the remaining pieces of the init.
	 */
	init = dev->init;
	init->r7.host_elapsed_seconds = cpu_to_le32(ktime_get_real_seconds());
	/* 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,
			NULL, NULL, NULL, NULL, NULL);
}

static int aac_sa_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
{
	return -EINVAL;
}

/**
 *	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_ioremap
 *	@size: mapping resize request
 *
 */
static int aac_sa_ioremap(struct aac_dev * dev, u32 size)
{
	if (!size) {
		iounmap(dev->regs.sa);
		return 0;
	}
	dev->base = dev->regs.sa = ioremap(dev->base_start, size);
	return (dev->base == NULL) ? -1 : 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;

	/*
	 *	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_enable_int = aac_sa_enable_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;
	dev->a_ops.adapter_restart = aac_sa_restart_adapter;
	dev->a_ops.adapter_start = aac_sa_start_adapter;
	dev->a_ops.adapter_intr = aac_sa_intr;
	dev->a_ops.adapter_deliver = aac_rx_deliver_producer;
	dev->a_ops.adapter_ioremap = aac_sa_ioremap;

	if (aac_sa_ioremap(dev, dev->base_size)) {
		printk(KERN_WARNING "%s: unable to map adapter.\n", name);
		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+startup_timeout*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;
		}
		msleep(1);
	}

	/*
	 *	First clear out all interrupts.  Then enable the one's that 
	 *	we can handle.
	 */
	aac_adapter_disable_int(dev);
	aac_adapter_enable_int(dev);

	if(aac_init_adapter(dev) == NULL)
		goto error_irq;
	dev->sync_mode = 0;	/* sync. mode not supported */
	if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
			IRQF_SHARED, "aacraid", (void *)dev) < 0) {
		printk(KERN_WARNING "%s%d: Interrupt unavailable.\n",
			name, instance);
		goto error_iounmap;
	}
	dev->dbg_base = dev->base_start;
	dev->dbg_base_mapped = dev->base;
	dev->dbg_size = dev->base_size;

	aac_adapter_enable_int(dev);

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

error_irq:
	aac_sa_disable_interrupt(dev);
	free_irq(dev->pdev->irq, (void *)dev);

error_iounmap:

	return -1;
}
Commit	Line	Data
c82ee6d3	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
1da177e4 LT	3	* Adaptec AAC series RAID controller driver
fa195afe	4	* (c) Copyright 2001 Red Hat Inc.
1da177e4 LT	5	*
	6	* based on the old aacraid driver that is..
	7	* Adaptec aacraid device driver for Linux.
	8	*
e8b12f0f	9	* Copyright (c) 2000-2010 Adaptec, Inc.
f4babba0 RAR	10	* 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
f4babba0 RAR	11	* 2016-2017 Microsemi Corp. (aacraid@microsemi.com)
1da177e4	12	*
1da177e4 LT	13	* Module Name:
	14	* sa.c
	15	*
	16	* Abstract: Drawbridge specific support functions
1da177e4 LT	17	*/
	18
	19	#include <linux/kernel.h>
	20	#include <linux/init.h>
	21	#include <linux/types.h>
8ef22247	22	#include <linux/pci.h>
1da177e4	23	#include <linux/spinlock.h>
1da177e4 LT	24	#include <linux/blkdev.h>
	25	#include <linux/delay.h>
	26	#include <linux/completion.h>
	27	#include <linux/time.h>
	28	#include <linux/interrupt.h>
1da177e4 LT	29
	30	#include <scsi/scsi_host.h>
	31
	32	#include "aacraid.h"
	33
7d12e780	34	static irqreturn_t aac_sa_intr(int irq, void *dev_id)
1da177e4 LT	35	{
	36	struct aac_dev *dev = dev_id;
	37	unsigned short intstat, mask;
	38
	39	intstat = sa_readw(dev, DoorbellReg_p);
	40	/*
	41	* Read mask and invert because drawbridge is reversed.
	42	* This allows us to only service interrupts that have been enabled.
	43	*/
	44	mask = ~(sa_readw(dev, SaDbCSR.PRISETIRQMASK));
	45
	46	/* Check to see if this is our interrupt. If it isn't just return */
	47
	48	if (intstat & mask) {
	49	if (intstat & PrintfReady) {
	50	aac_printf(dev, sa_readl(dev, Mailbox5));
	51	sa_writew(dev, DoorbellClrReg_p, PrintfReady); /* clear PrintfReady */
	52	sa_writew(dev, DoorbellReg_s, PrintfDone);
	53	} else if (intstat & DOORBELL_1) { // dev -> Host Normal Command Ready
1da177e4	54	sa_writew(dev, DoorbellClrReg_p, DOORBELL_1);
df3b7668	55	aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
1da177e4	56	} else if (intstat & DOORBELL_2) { // dev -> Host Normal Response Ready
1da177e4	57	sa_writew(dev, DoorbellClrReg_p, DOORBELL_2);
df3b7668	58	aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
1da177e4 LT	59	} else if (intstat & DOORBELL_3) { // dev -> Host Normal Command Not Full
	60	sa_writew(dev, DoorbellClrReg_p, DOORBELL_3);
	61	} else if (intstat & DOORBELL_4) { // dev -> Host Normal Response Not Full
	62	sa_writew(dev, DoorbellClrReg_p, DOORBELL_4);
	63	}
	64	return IRQ_HANDLED;
	65	}
	66	return IRQ_NONE;
	67	}
	68
bd1aac80 MH	69	/**
	70	* aac_sa_disable_interrupt - disable interrupt
	71	* @dev: Which adapter to enable.
	72	*/
	73
	74	static void aac_sa_disable_interrupt (struct aac_dev *dev)
	75	{
	76	sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
	77	}
	78
28713324 MH	79	/**
	80	* aac_sa_enable_interrupt - enable interrupt
	81	* @dev: Which adapter to enable.
	82	*/
	83
	84	static void aac_sa_enable_interrupt (struct aac_dev *dev)
	85	{
	86	sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, (PrintfReady \| DOORBELL_1 \|
	87	DOORBELL_2 \| DOORBELL_3 \| DOORBELL_4));
	88	}
	89
1da177e4 LT	90	/**
	91	* aac_sa_notify_adapter - handle adapter notification
	92	* @dev: Adapter that notification is for
	93	* @event: Event to notidy
	94	*
	95	* Notify the adapter of an event
	96	*/
	97
4833869e	98	static void aac_sa_notify_adapter(struct aac_dev *dev, u32 event)
1da177e4 LT	99	{
	100	switch (event) {
	101
	102	case AdapNormCmdQue:
	103	sa_writew(dev, DoorbellReg_s,DOORBELL_1);
	104	break;
	105	case HostNormRespNotFull:
	106	sa_writew(dev, DoorbellReg_s,DOORBELL_4);
	107	break;
	108	case AdapNormRespQue:
	109	sa_writew(dev, DoorbellReg_s,DOORBELL_2);
	110	break;
	111	case HostNormCmdNotFull:
	112	sa_writew(dev, DoorbellReg_s,DOORBELL_3);
	113	break;
	114	case HostShutdown:
7c00ffa3 MH	115	/*
	116	sa_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
	117	NULL, NULL, NULL, NULL, NULL);
	118	*/
1da177e4 LT	119	break;
	120	case FastIo:
	121	sa_writew(dev, DoorbellReg_s,DOORBELL_6);
	122	break;
	123	case AdapPrintfDone:
	124	sa_writew(dev, DoorbellReg_s,DOORBELL_5);
	125	break;
	126	default:
	127	BUG();
	128	break;
	129	}
	130	}
	131
	132
	133	/**
	134	* sa_sync_cmd - send a command and wait
	135	* @dev: Adapter
	136	* @command: Command to execute
	137	* @p1: first parameter
	138	* @ret: adapter status
	139	*
	140	* This routine will send a synchronous command to the adapter and wait
	141	* for its completion.
	142	*/
	143
7c00ffa3 MH	144	static int sa_sync_cmd(struct aac_dev *dev, u32 command,
	145	u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
	146	u32 ret, u32 r1, u32 r2, u32 r3, u32 *r4)
1da177e4 LT	147	{
	148	unsigned long start;
	149	int ok;
	150	/*
	151	* Write the Command into Mailbox 0
	152	*/
	153	sa_writel(dev, Mailbox0, command);
	154	/*
	155	* Write the parameters into Mailboxes 1 - 4
	156	*/
	157	sa_writel(dev, Mailbox1, p1);
7c00ffa3 MH	158	sa_writel(dev, Mailbox2, p2);
	159	sa_writel(dev, Mailbox3, p3);
	160	sa_writel(dev, Mailbox4, p4);
	161
1da177e4 LT	162	/*
	163	* Clear the synch command doorbell to start on a clean slate.
	164	*/
	165	sa_writew(dev, DoorbellClrReg_p, DOORBELL_0);
	166	/*
	167	* Signal that there is a new synch command
	168	*/
	169	sa_writew(dev, DoorbellReg_s, DOORBELL_0);
	170
	171	ok = 0;
	172	start = jiffies;
	173
	174	while(time_before(jiffies, start+30*HZ))
	175	{
	176	/*
	177	* Delay 5uS so that the monitor gets access
	178	*/
	179	udelay(5);
	180	/*
	181	* Mon110 will set doorbell0 bit when it has
	182	* completed the command.
	183	*/
	184	if(sa_readw(dev, DoorbellReg_p) & DOORBELL_0) {
	185	ok = 1;
	186	break;
	187	}
1241f359	188	msleep(1);
1da177e4 LT	189	}
	190
	191	if (ok != 1)
	192	return -ETIMEDOUT;
	193	/*
	194	* Clear the synch command doorbell.
	195	*/
	196	sa_writew(dev, DoorbellClrReg_p, DOORBELL_0);
	197	/*
	198	* Pull the synch status from Mailbox 0.
	199	*/
	200	if (ret)
	201	*ret = sa_readl(dev, Mailbox0);
7c00ffa3 MH	202	if (r1)
	203	*r1 = sa_readl(dev, Mailbox1);
	204	if (r2)
	205	*r2 = sa_readl(dev, Mailbox2);
	206	if (r3)
	207	*r3 = sa_readl(dev, Mailbox3);
	208	if (r4)
	209	*r4 = sa_readl(dev, Mailbox4);
1da177e4 LT	210	return 0;
	211	}
	212
	213	/**
	214	* aac_sa_interrupt_adapter - interrupt an adapter
	215	* @dev: Which adapter to enable.
	216	*
	217	* Breakpoint an adapter.
	218	*/
	219
	220	static void aac_sa_interrupt_adapter (struct aac_dev *dev)
	221	{
7c00ffa3	222	sa_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0,
bd1aac80	223	NULL, NULL, NULL, NULL, NULL);
1da177e4 LT	224	}
	225
	226	/**
	227	* aac_sa_start_adapter - activate adapter
	228	* @dev: Adapter
	229	*
	230	* Start up processing on an ARM based AAC adapter
	231	*/
	232
	233	static void aac_sa_start_adapter(struct aac_dev *dev)
	234	{
d1ef4da8	235	union aac_init *init;
1da177e4 LT	236	/*
	237	* Fill in the remaining pieces of the init.
	238	*/
	239	init = dev->init;
38150f7a	240	init->r7.host_elapsed_seconds = cpu_to_le32(ktime_get_real_seconds());
1da177e4	241	/* We can only use a 32 bit address here */
7c00ffa3 MH	242	sa_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS,
7c00ffa3 MH	243	(u32)(ulong)dev->init_pa, 0, 0, 0, 0, 0,
8e0c5ebd	244	NULL, NULL, NULL, NULL, NULL);
1da177e4 LT	245	}
1da177e4 LT	246
31364329	247	static int aac_sa_restart_adapter(struct aac_dev *dev, int bled, u8 reset_type)
2ab01efd SM	248	{
	249	return -EINVAL;
	250	}
	251
1da177e4 LT	252	/**
	253	* aac_sa_check_health
	254	* @dev: device to check if healthy
	255	*
	256	* Will attempt to determine if the specified adapter is alive and
	257	* capable of handling requests, returning 0 if alive.
	258	*/
	259	static int aac_sa_check_health(struct aac_dev *dev)
	260	{
	261	long status = sa_readl(dev, Mailbox7);
	262
	263	/*
	264	* Check to see if the board failed any self tests.
	265	*/
	266	if (status & SELF_TEST_FAILED)
	267	return -1;
	268	/*
	269	* Check to see if the board panic'd while booting.
	270	*/
	271	if (status & KERNEL_PANIC)
	272	return -2;
	273	/*
	274	* Wait for the adapter to be up and running. Wait up to 3 minutes
	275	*/
	276	if (!(status & KERNEL_UP_AND_RUNNING))
	277	return -3;
	278	/*
	279	* Everything is OK
	280	*/
	281	return 0;
	282	}
	283
76a7f8fd MH	284	/**
	285	* aac_sa_ioremap
	286	* @size: mapping resize request
	287	*
	288	*/
	289	static int aac_sa_ioremap(struct aac_dev * dev, u32 size)
	290	{
	291	if (!size) {
	292	iounmap(dev->regs.sa);
	293	return 0;
	294	}
ff08784b	295	dev->base = dev->regs.sa = ioremap(dev->base_start, size);
76a7f8fd MH	296	return (dev->base == NULL) ? -1 : 0;
	297	}
	298
1da177e4 LT	299	/**
	300	* aac_sa_init - initialize an ARM based AAC card
	301	* @dev: device to configure
	302	*
	303	* Allocate and set up resources for the ARM based AAC variants. The
	304	* device_interface in the commregion will be allocated and linked
	305	* to the comm region.
	306	*/
	307
	308	int aac_sa_init(struct aac_dev *dev)
	309	{
	310	unsigned long start;
	311	unsigned long status;
	312	int instance;
	313	const char *name;
	314
	315	instance = dev->id;
	316	name = dev->name;
	317
bef4e688 MR	318	/*
	319	* Fill in the function dispatch table.
	320	*/
	321
	322	dev->a_ops.adapter_interrupt = aac_sa_interrupt_adapter;
	323	dev->a_ops.adapter_disable_int = aac_sa_disable_interrupt;
	324	dev->a_ops.adapter_enable_int = aac_sa_enable_interrupt;
	325	dev->a_ops.adapter_notify = aac_sa_notify_adapter;
	326	dev->a_ops.adapter_sync_cmd = sa_sync_cmd;
	327	dev->a_ops.adapter_check_health = aac_sa_check_health;
	328	dev->a_ops.adapter_restart = aac_sa_restart_adapter;
	329	dev->a_ops.adapter_start = aac_sa_start_adapter;
	330	dev->a_ops.adapter_intr = aac_sa_intr;
	331	dev->a_ops.adapter_deliver = aac_rx_deliver_producer;
	332	dev->a_ops.adapter_ioremap = aac_sa_ioremap;
	333
76a7f8fd MH	334	if (aac_sa_ioremap(dev, dev->base_size)) {
	335	printk(KERN_WARNING "%s: unable to map adapter.\n", name);
	336	goto error_iounmap;
	337	}
	338
1da177e4 LT	339	/*
	340	* Check to see if the board failed any self tests.
	341	*/
	342	if (sa_readl(dev, Mailbox7) & SELF_TEST_FAILED) {
	343	printk(KERN_WARNING "%s%d: adapter self-test failed.\n", name, instance);
	344	goto error_iounmap;
	345	}
	346	/*
	347	* Check to see if the board panic'd while booting.
	348	*/
	349	if (sa_readl(dev, Mailbox7) & KERNEL_PANIC) {
	350	printk(KERN_WARNING "%s%d: adapter kernel panic'd.\n", name, instance);
	351	goto error_iounmap;
	352	}
	353	start = jiffies;
	354	/*
	355	* Wait for the adapter to be up and running. Wait up to 3 minutes.
	356	*/
	357	while (!(sa_readl(dev, Mailbox7) & KERNEL_UP_AND_RUNNING)) {
404d9a90	358	if (time_after(jiffies, start+startup_timeout*HZ)) {
1da177e4 LT	359	status = sa_readl(dev, Mailbox7);
	360	printk(KERN_WARNING "%s%d: adapter kernel failed to start, init status = %lx.\n",
	361	name, instance, status);
	362	goto error_iounmap;
	363	}
404d9a90	364	msleep(1);
1da177e4 LT	365	}
1da177e4 LT	366
bd1aac80 MH	367	/*
	368	* First clear out all interrupts. Then enable the one's that
	369	* we can handle.
	370	*/
28713324 MH	371	aac_adapter_disable_int(dev);
28713324 MH	372	aac_adapter_enable_int(dev);
1da177e4 LT	373
	374	if(aac_init_adapter(dev) == NULL)
	375	goto error_irq;
11604612	376	dev->sync_mode = 0; /* sync. mode not supported */
8ef22247	377	if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
4909cc2b	378	IRQF_SHARED, "aacraid", (void *)dev) < 0) {
28713324 MH	379	printk(KERN_WARNING "%s%d: Interrupt unavailable.\n",
	380	name, instance);
	381	goto error_iounmap;
	382	}
ff08784b	383	dev->dbg_base = dev->base_start;
e8b12f0f MR	384	dev->dbg_base_mapped = dev->base;
	385	dev->dbg_size = dev->base_size;
	386
28713324	387	aac_adapter_enable_int(dev);
1da177e4	388
1da177e4 LT	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
1da177e4	396	error_irq:
28713324	397	aac_sa_disable_interrupt(dev);
8ef22247	398	free_irq(dev->pdev->irq, (void *)dev);
1da177e4 LT	399
1da177e4 LT	400	error_iounmap:
1da177e4 LT	401
	402	return -1;
	403	}
	404