mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 06:55:13 +08:00
1d6f359a2e
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
499 lines
13 KiB
C
499 lines
13 KiB
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:
|
|
* rx.c
|
|
*
|
|
* Abstract: Hardware miniport for Drawbridge specific hardware 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_rx_intr(int irq, void *dev_id, struct pt_regs *regs)
|
|
{
|
|
struct aac_dev *dev = dev_id;
|
|
|
|
dprintk((KERN_DEBUG "aac_rx_intr(%d,%p,%p)\n", irq, dev_id, regs));
|
|
if (dev->new_comm_interface) {
|
|
u32 Index = rx_readl(dev, MUnit.OutboundQueue);
|
|
if (Index == 0xFFFFFFFFL)
|
|
Index = rx_readl(dev, MUnit.OutboundQueue);
|
|
if (Index != 0xFFFFFFFFL) {
|
|
do {
|
|
if (aac_intr_normal(dev, Index)) {
|
|
rx_writel(dev, MUnit.OutboundQueue, Index);
|
|
rx_writel(dev, MUnit.ODR, DoorBellAdapterNormRespReady);
|
|
}
|
|
Index = rx_readl(dev, MUnit.OutboundQueue);
|
|
} while (Index != 0xFFFFFFFFL);
|
|
return IRQ_HANDLED;
|
|
}
|
|
} else {
|
|
unsigned long bellbits;
|
|
u8 intstat;
|
|
intstat = rx_readb(dev, MUnit.OISR);
|
|
/*
|
|
* Read mask and invert because drawbridge is reversed.
|
|
* This allows us to only service interrupts that have
|
|
* been enabled.
|
|
* Check to see if this is our interrupt. If it isn't just return
|
|
*/
|
|
if (intstat & ~(dev->OIMR))
|
|
{
|
|
bellbits = rx_readl(dev, OutboundDoorbellReg);
|
|
if (bellbits & DoorBellPrintfReady) {
|
|
aac_printf(dev, rx_readl (dev, IndexRegs.Mailbox[5]));
|
|
rx_writel(dev, MUnit.ODR,DoorBellPrintfReady);
|
|
rx_writel(dev, InboundDoorbellReg,DoorBellPrintfDone);
|
|
}
|
|
else if (bellbits & DoorBellAdapterNormCmdReady) {
|
|
rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdReady);
|
|
aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
|
|
}
|
|
else if (bellbits & DoorBellAdapterNormRespReady) {
|
|
rx_writel(dev, MUnit.ODR,DoorBellAdapterNormRespReady);
|
|
aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
|
|
}
|
|
else if (bellbits & DoorBellAdapterNormCmdNotFull) {
|
|
rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
|
|
}
|
|
else if (bellbits & DoorBellAdapterNormRespNotFull) {
|
|
rx_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
|
|
rx_writel(dev, MUnit.ODR, DoorBellAdapterNormRespNotFull);
|
|
}
|
|
return IRQ_HANDLED;
|
|
}
|
|
}
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
/**
|
|
* aac_rx_disable_interrupt - Disable interrupts
|
|
* @dev: Adapter
|
|
*/
|
|
|
|
static void aac_rx_disable_interrupt(struct aac_dev *dev)
|
|
{
|
|
rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
|
|
}
|
|
|
|
/**
|
|
* rx_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 rx_sync_cmd(struct aac_dev *dev, u32 command,
|
|
u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
|
|
u32 *status, u32 * r1, u32 * r2, u32 * r3, u32 * r4)
|
|
{
|
|
unsigned long start;
|
|
int ok;
|
|
/*
|
|
* Write the command into Mailbox 0
|
|
*/
|
|
rx_writel(dev, InboundMailbox0, command);
|
|
/*
|
|
* Write the parameters into Mailboxes 1 - 6
|
|
*/
|
|
rx_writel(dev, InboundMailbox1, p1);
|
|
rx_writel(dev, InboundMailbox2, p2);
|
|
rx_writel(dev, InboundMailbox3, p3);
|
|
rx_writel(dev, InboundMailbox4, p4);
|
|
/*
|
|
* Clear the synch command doorbell to start on a clean slate.
|
|
*/
|
|
rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
|
|
/*
|
|
* Disable doorbell interrupts
|
|
*/
|
|
rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
|
|
/*
|
|
* Force the completion of the mask register write before issuing
|
|
* the interrupt.
|
|
*/
|
|
rx_readb (dev, MUnit.OIMR);
|
|
/*
|
|
* Signal that there is a new synch command
|
|
*/
|
|
rx_writel(dev, InboundDoorbellReg, INBOUNDDOORBELL_0);
|
|
|
|
ok = 0;
|
|
start = jiffies;
|
|
|
|
/*
|
|
* Wait up to 30 seconds
|
|
*/
|
|
while (time_before(jiffies, start+30*HZ))
|
|
{
|
|
udelay(5); /* Delay 5 microseconds to let Mon960 get info. */
|
|
/*
|
|
* Mon960 will set doorbell0 bit when it has completed the command.
|
|
*/
|
|
if (rx_readl(dev, OutboundDoorbellReg) & OUTBOUNDDOORBELL_0) {
|
|
/*
|
|
* Clear the doorbell.
|
|
*/
|
|
rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
|
|
ok = 1;
|
|
break;
|
|
}
|
|
/*
|
|
* Yield the processor in case we are slow
|
|
*/
|
|
msleep(1);
|
|
}
|
|
if (ok != 1) {
|
|
/*
|
|
* Restore interrupt mask even though we timed out
|
|
*/
|
|
if (dev->new_comm_interface)
|
|
rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
|
|
else
|
|
rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
|
|
return -ETIMEDOUT;
|
|
}
|
|
/*
|
|
* Pull the synch status from Mailbox 0.
|
|
*/
|
|
if (status)
|
|
*status = rx_readl(dev, IndexRegs.Mailbox[0]);
|
|
if (r1)
|
|
*r1 = rx_readl(dev, IndexRegs.Mailbox[1]);
|
|
if (r2)
|
|
*r2 = rx_readl(dev, IndexRegs.Mailbox[2]);
|
|
if (r3)
|
|
*r3 = rx_readl(dev, IndexRegs.Mailbox[3]);
|
|
if (r4)
|
|
*r4 = rx_readl(dev, IndexRegs.Mailbox[4]);
|
|
/*
|
|
* Clear the synch command doorbell.
|
|
*/
|
|
rx_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
|
|
/*
|
|
* Restore interrupt mask
|
|
*/
|
|
if (dev->new_comm_interface)
|
|
rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
|
|
else
|
|
rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
|
|
return 0;
|
|
|
|
}
|
|
|
|
/**
|
|
* aac_rx_interrupt_adapter - interrupt adapter
|
|
* @dev: Adapter
|
|
*
|
|
* Send an interrupt to the i960 and breakpoint it.
|
|
*/
|
|
|
|
static void aac_rx_interrupt_adapter(struct aac_dev *dev)
|
|
{
|
|
rx_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
|
|
}
|
|
|
|
/**
|
|
* aac_rx_notify_adapter - send an event to the adapter
|
|
* @dev: Adapter
|
|
* @event: Event to send
|
|
*
|
|
* Notify the i960 that something it probably cares about has
|
|
* happened.
|
|
*/
|
|
|
|
static void aac_rx_notify_adapter(struct aac_dev *dev, u32 event)
|
|
{
|
|
switch (event) {
|
|
|
|
case AdapNormCmdQue:
|
|
rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_1);
|
|
break;
|
|
case HostNormRespNotFull:
|
|
rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_4);
|
|
break;
|
|
case AdapNormRespQue:
|
|
rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_2);
|
|
break;
|
|
case HostNormCmdNotFull:
|
|
rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_3);
|
|
break;
|
|
case HostShutdown:
|
|
// rx_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
|
|
// NULL, NULL, NULL, NULL, NULL);
|
|
break;
|
|
case FastIo:
|
|
rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_6);
|
|
break;
|
|
case AdapPrintfDone:
|
|
rx_writel(dev, MUnit.IDR,INBOUNDDOORBELL_5);
|
|
break;
|
|
default:
|
|
BUG();
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* aac_rx_start_adapter - activate adapter
|
|
* @dev: Adapter
|
|
*
|
|
* Start up processing on an i960 based AAC adapter
|
|
*/
|
|
|
|
static void aac_rx_start_adapter(struct aac_dev *dev)
|
|
{
|
|
struct aac_init *init;
|
|
|
|
init = dev->init;
|
|
init->HostElapsedSeconds = cpu_to_le32(get_seconds());
|
|
// We can only use a 32 bit address here
|
|
rx_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
|
|
0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
|
|
}
|
|
|
|
/**
|
|
* aac_rx_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_rx_check_health(struct aac_dev *dev)
|
|
{
|
|
u32 status = rx_readl(dev, MUnit.OMRx[0]);
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
if (status & KERNEL_PANIC) {
|
|
char * buffer;
|
|
struct POSTSTATUS {
|
|
__le32 Post_Command;
|
|
__le32 Post_Address;
|
|
} * post;
|
|
dma_addr_t paddr, baddr;
|
|
int ret;
|
|
|
|
if ((status & 0xFF000000L) == 0xBC000000L)
|
|
return (status >> 16) & 0xFF;
|
|
buffer = pci_alloc_consistent(dev->pdev, 512, &baddr);
|
|
ret = -2;
|
|
if (buffer == NULL)
|
|
return ret;
|
|
post = pci_alloc_consistent(dev->pdev,
|
|
sizeof(struct POSTSTATUS), &paddr);
|
|
if (post == NULL) {
|
|
pci_free_consistent(dev->pdev, 512, buffer, baddr);
|
|
return ret;
|
|
}
|
|
memset(buffer, 0, 512);
|
|
post->Post_Command = cpu_to_le32(COMMAND_POST_RESULTS);
|
|
post->Post_Address = cpu_to_le32(baddr);
|
|
rx_writel(dev, MUnit.IMRx[0], paddr);
|
|
rx_sync_cmd(dev, COMMAND_POST_RESULTS, baddr, 0, 0, 0, 0, 0,
|
|
NULL, NULL, NULL, NULL, NULL);
|
|
pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
|
|
post, paddr);
|
|
if ((buffer[0] == '0') && ((buffer[1] == 'x') || (buffer[1] == 'X'))) {
|
|
ret = (buffer[2] <= '9') ? (buffer[2] - '0') : (buffer[2] - 'A' + 10);
|
|
ret <<= 4;
|
|
ret += (buffer[3] <= '9') ? (buffer[3] - '0') : (buffer[3] - 'A' + 10);
|
|
}
|
|
pci_free_consistent(dev->pdev, 512, buffer, baddr);
|
|
return ret;
|
|
}
|
|
/*
|
|
* Wait for the adapter to be up and running.
|
|
*/
|
|
if (!(status & KERNEL_UP_AND_RUNNING))
|
|
return -3;
|
|
/*
|
|
* Everything is OK
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* aac_rx_send
|
|
* @fib: fib to issue
|
|
*
|
|
* Will send a fib, returning 0 if successful.
|
|
*/
|
|
static int aac_rx_send(struct fib * fib)
|
|
{
|
|
u64 addr = fib->hw_fib_pa;
|
|
struct aac_dev *dev = fib->dev;
|
|
volatile void __iomem *device = dev->regs.rx;
|
|
u32 Index;
|
|
|
|
dprintk((KERN_DEBUG "%p->aac_rx_send(%p->%llx)\n", dev, fib, addr));
|
|
Index = rx_readl(dev, MUnit.InboundQueue);
|
|
if (Index == 0xFFFFFFFFL)
|
|
Index = rx_readl(dev, MUnit.InboundQueue);
|
|
dprintk((KERN_DEBUG "Index = 0x%x\n", Index));
|
|
if (Index == 0xFFFFFFFFL)
|
|
return Index;
|
|
device += Index;
|
|
dprintk((KERN_DEBUG "entry = %x %x %u\n", (u32)(addr & 0xffffffff),
|
|
(u32)(addr >> 32), (u32)le16_to_cpu(fib->hw_fib->header.Size)));
|
|
writel((u32)(addr & 0xffffffff), device);
|
|
device += sizeof(u32);
|
|
writel((u32)(addr >> 32), device);
|
|
device += sizeof(u32);
|
|
writel(le16_to_cpu(fib->hw_fib->header.Size), device);
|
|
rx_writel(dev, MUnit.InboundQueue, Index);
|
|
dprintk((KERN_DEBUG "aac_rx_send - return 0\n"));
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* aac_rx_init - initialize an i960 based AAC card
|
|
* @dev: device to configure
|
|
*
|
|
* Allocate and set up resources for the i960 based AAC variants. The
|
|
* device_interface in the commregion will be allocated and linked
|
|
* to the comm region.
|
|
*/
|
|
|
|
int aac_rx_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 panic'd while booting.
|
|
*/
|
|
/*
|
|
* Check to see if the board failed any self tests.
|
|
*/
|
|
if (rx_readl(dev, MUnit.OMRx[0]) & SELF_TEST_FAILED) {
|
|
printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
|
|
goto error_iounmap;
|
|
}
|
|
/*
|
|
* Check to see if the board panic'd while booting.
|
|
*/
|
|
if (rx_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC) {
|
|
printk(KERN_ERR "%s%d: adapter kernel panic.\n", dev->name, instance);
|
|
goto error_iounmap;
|
|
}
|
|
/*
|
|
* Check to see if the monitor panic'd while booting.
|
|
*/
|
|
if (rx_readl(dev, MUnit.OMRx[0]) & MONITOR_PANIC) {
|
|
printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
|
|
goto error_iounmap;
|
|
}
|
|
start = jiffies;
|
|
/*
|
|
* Wait for the adapter to be up and running. Wait up to 3 minutes
|
|
*/
|
|
while ((!(rx_readl(dev, IndexRegs.Mailbox[7]) & KERNEL_UP_AND_RUNNING))
|
|
|| (!(rx_readl(dev, MUnit.OMRx[0]) & KERNEL_UP_AND_RUNNING)))
|
|
{
|
|
if(time_after(jiffies, start+startup_timeout*HZ))
|
|
{
|
|
status = rx_readl(dev, IndexRegs.Mailbox[7]);
|
|
printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
|
|
dev->name, instance, status);
|
|
goto error_iounmap;
|
|
}
|
|
msleep(1);
|
|
}
|
|
if (request_irq(dev->scsi_host_ptr->irq, aac_rx_intr, IRQF_SHARED|IRQF_DISABLED, "aacraid", (void *)dev)<0)
|
|
{
|
|
printk(KERN_ERR "%s%d: Interrupt unavailable.\n", name, instance);
|
|
goto error_iounmap;
|
|
}
|
|
/*
|
|
* Fill in the function dispatch table.
|
|
*/
|
|
dev->a_ops.adapter_interrupt = aac_rx_interrupt_adapter;
|
|
dev->a_ops.adapter_disable_int = aac_rx_disable_interrupt;
|
|
dev->a_ops.adapter_notify = aac_rx_notify_adapter;
|
|
dev->a_ops.adapter_sync_cmd = rx_sync_cmd;
|
|
dev->a_ops.adapter_check_health = aac_rx_check_health;
|
|
dev->a_ops.adapter_send = aac_rx_send;
|
|
|
|
/*
|
|
* First clear out all interrupts. Then enable the one's that we
|
|
* can handle.
|
|
*/
|
|
rx_writeb(dev, MUnit.OIMR, 0xff);
|
|
rx_writel(dev, MUnit.ODR, 0xffffffff);
|
|
rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
|
|
|
|
if (aac_init_adapter(dev) == NULL)
|
|
goto error_irq;
|
|
if (dev->new_comm_interface)
|
|
rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xf7);
|
|
|
|
/*
|
|
* Tell the adapter that all is configured, and it can start
|
|
* accepting requests
|
|
*/
|
|
aac_rx_start_adapter(dev);
|
|
return 0;
|
|
|
|
error_irq:
|
|
rx_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
|
|
free_irq(dev->scsi_host_ptr->irq, (void *)dev);
|
|
|
|
error_iounmap:
|
|
|
|
return -1;
|
|
}
|