patch-2.4.20 linux-2.4.20/drivers/scsi/aacraid/sap1sup.c

• Lines: 395
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.19/drivers/scsi/aacraid/sap1sup.c
• Orig date: Fri Dec 21 09:41:55 2001

diff -urN linux-2.4.19/drivers/scsi/aacraid/sap1sup.c linux-2.4.20/drivers/scsi/aacraid/sap1sup.c
@@ -1,394 +0,0 @@
-/*
- *	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:
- *  sap1sup.c
- *
- * Abstract: Drawbridge specific support functions
- *
- */
-
-#include <linux/config.h>
-#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/blk.h>
-#include <linux/delay.h>
-#include <linux/completion.h>
-#include <asm/semaphore.h>
-#include "scsi.h"
-#include "hosts.h"
-
-#include "aacraid.h"
-
-static void 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, le32_to_cpu(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);
-		}
-	}
-}
-
-/**
- *	aac_sa_enable_interrupt	-	enable an interrupt event
- *	@dev: Which adapter to enable.
- *	@event: Which adapter event.
- *
- *	This routine will enable the corresponding adapter event to cause an interrupt on 
- * 	the host.
- */
- 
-void aac_sa_enable_interrupt(struct aac_dev *dev, u32 event)
-{
-	switch (event) {
-
-	case HostNormCmdQue:
-		sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, DOORBELL_1);
-		break;
-
-	case HostNormRespQue:
-		sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, DOORBELL_2);
-		break;
-
-	case AdapNormCmdNotFull:
-		sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, DOORBELL_3);
-		break;
-
-	case AdapNormRespNotFull:
-		sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, DOORBELL_4);
-		break;
-	}
-}
-
-/**
- *	aac_sa_disable_interrupt	-	disable an interrupt event
- *	@dev: Which adapter to enable.
- *	@event: Which adapter event.
- *
- *	This routine will enable the corresponding adapter event to cause an interrupt on 
- * 	the host.
- */
-
-void aac_sa_disable_interrupt (struct aac_dev *dev, u32 event)
-{
-	switch (event) {
-
-	case HostNormCmdQue:
-		sa_writew(dev, SaDbCSR.PRISETIRQMASK, DOORBELL_1);
-		break;
-
-	case HostNormRespQue:
-		sa_writew(dev, SaDbCSR.PRISETIRQMASK, DOORBELL_2);
-		break;
-
-	case AdapNormCmdNotFull:
-		sa_writew(dev, SaDbCSR.PRISETIRQMASK, DOORBELL_3);
-		break;
-
-	case AdapNormRespNotFull:
-		sa_writew(dev, SaDbCSR.PRISETIRQMASK, DOORBELL_4);
-		break;
-	}
-}
-
-/**
- *	aac_sa_notify_adapter		-	handle adapter notification
- *	@dev:	Adapter that notification is for
- *	@event:	Event to notidy
- *
- *	Notify the adapter of an event
- */
- 
-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, &ret);
-		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 comamnd to the adapter and wait 
- *	for its	completion.
- */
-
-static int sa_sync_cmd(struct aac_dev *dev, unsigned long command, unsigned long p1, unsigned long *ret)
-{
-	unsigned long start;
- 	int ok;
-	/*
-	 *	Write the Command into Mailbox 0
-	 */
-	sa_writel(dev, Mailbox0, cpu_to_le32(command));
-	/*
-	 *	Write the parameters into Mailboxes 1 - 4
-	 */
-	sa_writel(dev, Mailbox1, cpu_to_le32(p1));
-	sa_writel(dev, Mailbox2, 0);
-	sa_writel(dev, Mailbox3, 0);
-	sa_writel(dev, Mailbox4, 0);
-	/*
-	 *	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.
-	 */
-	*ret = le32_to_cpu(sa_readl(dev, Mailbox0));
-	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)
-{
-	unsigned long ret;
-	sa_sync_cmd(dev, BREAKPOINT_REQUEST, 0, &ret);
-}
-
-/**
- *	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)
-{
-	unsigned long ret;
-	struct aac_init *init;
-	/*
-	 * Fill in the remaining pieces of the init.
-	 */
-	init = dev->init;
-	init->HostElapsedSeconds = cpu_to_le32(jiffies/HZ);
-
-	dprintk(("INIT\n"));
-	/*
-	 * 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.
-	 */
-	dprintk(("MASK\n"));
-	sa_writew(dev, SaDbCSR.PRISETIRQMASK, cpu_to_le16(0xffff));
-	sa_writew(dev, SaDbCSR.PRICLEARIRQMASK, (PrintfReady | DOORBELL_1 | DOORBELL_2 | DOORBELL_3 | DOORBELL_4));
-	dprintk(("SYNCCMD\n"));
-	sa_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (unsigned long) dev->init_pa, &ret);
-}
-
-/**
- *	aac_sa_init	-	initialize an ARM based AAC card
- *	@dev: device to configure
- *	@devnum: adapter number
- *
- *	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 devnum)
-{
-	unsigned long start;
-	unsigned long status;
-	int instance;
-	const char *name;
-
-	dev->devnum = devnum;
-
-	dprintk(("PREINST\n"));
-	instance = dev->id;
-	name     = dev->name;
-
-	/*
-	 *	Map in the registers from the adapter.
-	 */
-	dprintk(("PREMAP\n"));
-
-	if((dev->regs.sa = (struct sa_registers *)ioremap((unsigned long)dev->scsi_host_ptr->base, 8192))==NULL)
-	{	
-		printk(KERN_WARNING "aacraid: unable to map ARM.\n" );
-		return -1;
-	}
-	/*
-	 *	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);
-		return -1;
-	}
-	/*
-	 *	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);
-		return -1;
-	}
-	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(start+180*HZ, jiffies)) {
-			status = sa_readl(dev, Mailbox7) >> 16;
-			printk(KERN_WARNING "%s%d: adapter kernel failed to start, init status = %d.\n", name, instance, le32_to_cpu(status));
-			return -1;
-		}
-		set_current_state(TASK_UNINTERRUPTIBLE);
-		schedule_timeout(1);
-	}
-
-	dprintk(("ATIRQ\n"));
-	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);
-		return -1;
-	}
-
-	/*
-	 *	Fill in the function dispatch table.
-	 */
-
-	dev->a_ops.adapter_interrupt = aac_sa_interrupt_adapter;
-	dev->a_ops.adapter_enable_int = aac_sa_enable_interrupt;
-	dev->a_ops.adapter_disable_int = aac_sa_disable_interrupt;
-	dev->a_ops.adapter_notify = aac_sa_notify_adapter;
-
-	dprintk(("FUNCDONE\n"));
-
-	if(aac_init_adapter(dev) == NULL)
-		return -1;
-
-	dprintk(("NEWADAPTDONE\n"));
-	/*
-	 *	Start any kernel threads needed
-	 */
-	dev->thread_pid = kernel_thread((int (*)(void *))aac_command_thread, dev, 0);
-	/*
-	 *	Tell the adapter that all is configure, and it can start 
-	 *	accepting requests
-	 */
-	dprintk(("STARTING\n"));
-	aac_sa_start_adapter(dev);
-	dprintk(("STARTED\n"));
-	return 0;
-}
-