2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* 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;
|
|
|
|
}
|
|
|
|
|
2005-08-03 16:39:01 -06:00
|
|
|
/**
|
|
|
|
* 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);
|
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/**
|
|
|
|
* aac_sa_notify_adapter - handle adapter notification
|
|
|
|
* @dev: Adapter that notification is for
|
|
|
|
* @event: Event to notidy
|
|
|
|
*
|
|
|
|
* Notify the adapter of an event
|
|
|
|
*/
|
|
|
|
|
2005-04-25 20:45:58 -06:00
|
|
|
static void aac_sa_notify_adapter(struct aac_dev *dev, u32 event)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
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:
|
2005-05-16 19:28:42 -06:00
|
|
|
/*
|
|
|
|
sa_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
|
|
|
|
NULL, NULL, NULL, NULL, NULL);
|
|
|
|
*/
|
2005-04-16 16:20:36 -06:00
|
|
|
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.
|
|
|
|
*/
|
|
|
|
|
2005-05-16 19:28:42 -06:00
|
|
|
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)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
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);
|
2005-05-16 19:28:42 -06:00
|
|
|
sa_writel(dev, Mailbox2, p2);
|
|
|
|
sa_writel(dev, Mailbox3, p3);
|
|
|
|
sa_writel(dev, Mailbox4, p4);
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* 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;
|
|
|
|
}
|
2006-03-27 10:44:23 -07:00
|
|
|
msleep(1);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
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);
|
2005-05-16 19:28:42 -06:00
|
|
|
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);
|
2005-04-16 16:20:36 -06:00
|
|
|
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)
|
|
|
|
{
|
2005-05-16 19:28:42 -06:00
|
|
|
sa_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0,
|
2005-08-03 16:39:01 -06:00
|
|
|
NULL, NULL, NULL, NULL, NULL);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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)
|
|
|
|
{
|
|
|
|
struct aac_init *init;
|
|
|
|
/*
|
|
|
|
* Fill in the remaining pieces of the init.
|
|
|
|
*/
|
|
|
|
init = dev->init;
|
|
|
|
init->HostElapsedSeconds = cpu_to_le32(get_seconds());
|
|
|
|
/* We can only use a 32 bit address here */
|
2005-05-16 19:28:42 -06:00
|
|
|
sa_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS,
|
|
|
|
(u32)(ulong)dev->init_pa, 0, 0, 0, 0, 0,
|
2005-10-24 11:52:22 -06:00
|
|
|
NULL, NULL, NULL, NULL, NULL);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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)) {
|
2006-05-10 10:12:48 -06:00
|
|
|
if (time_after(jiffies, start+startup_timeout*HZ)) {
|
2005-04-16 16:20:36 -06:00
|
|
|
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;
|
|
|
|
}
|
2006-05-10 10:12:48 -06:00
|
|
|
msleep(1);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
2005-08-03 16:39:01 -06:00
|
|
|
dev->a_ops.adapter_disable_int = aac_sa_disable_interrupt;
|
2005-04-16 16:20:36 -06:00
|
|
|
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;
|
|
|
|
|
2005-08-03 16:39:01 -06:00
|
|
|
/*
|
|
|
|
* 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));
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
if(aac_init_adapter(dev) == NULL)
|
|
|
|
goto error_irq;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Tell the adapter that all is configure, and it can start
|
|
|
|
* accepting requests
|
|
|
|
*/
|
|
|
|
aac_sa_start_adapter(dev);
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
error_irq:
|
2005-08-03 16:39:01 -06:00
|
|
|
sa_writew(dev, SaDbCSR.PRISETIRQMASK, 0xffff);
|
2005-04-16 16:20:36 -06:00
|
|
|
free_irq(dev->scsi_host_ptr->irq, (void *)dev);
|
|
|
|
|
|
|
|
error_iounmap:
|
|
|
|
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|